Commit | Line | Data |
---|---|---|
11e865c1 GP |
1 | /* |
2 | comedi/drivers/s626.c | |
3 | Sensoray s626 Comedi driver | |
4 | ||
5 | COMEDI - Linux Control and Measurement Device Interface | |
6 | Copyright (C) 2000 David A. Schleef <ds@schleef.org> | |
7 | ||
8 | Based on Sensoray Model 626 Linux driver Version 0.2 | |
9 | Copyright (C) 2002-2004 Sensoray Co., Inc. | |
10 | ||
11 | This program is free software; you can redistribute it and/or modify | |
12 | it under the terms of the GNU General Public License as published by | |
13 | the Free Software Foundation; either version 2 of the License, or | |
14 | (at your option) any later version. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | ||
25 | */ | |
26 | ||
27 | /* | |
28 | Driver: s626 | |
29 | Description: Sensoray 626 driver | |
30 | Devices: [Sensoray] 626 (s626) | |
31 | Authors: Gianluca Palli <gpalli@deis.unibo.it>, | |
32 | Updated: Fri, 15 Feb 2008 10:28:42 +0000 | |
33 | Status: experimental | |
34 | ||
35 | Configuration options: | |
36 | [0] - PCI bus of device (optional) | |
37 | [1] - PCI slot of device (optional) | |
38 | If bus/slot is not specified, the first supported | |
39 | PCI device found will be used. | |
40 | ||
41 | INSN_CONFIG instructions: | |
42 | analog input: | |
43 | none | |
44 | ||
45 | analog output: | |
46 | none | |
47 | ||
48 | digital channel: | |
49 | s626 has 3 dio subdevices (2,3 and 4) each with 16 i/o channels | |
50 | supported configuration options: | |
51 | INSN_CONFIG_DIO_QUERY | |
52 | COMEDI_INPUT | |
53 | COMEDI_OUTPUT | |
54 | ||
55 | encoder: | |
56 | Every channel must be configured before reading. | |
57 | ||
58 | Example code | |
59 | ||
60 | insn.insn=INSN_CONFIG; //configuration instruction | |
61 | insn.n=1; //number of operation (must be 1) | |
62 | insn.data=&initialvalue; //initial value loaded into encoder | |
add74595 | 63 | //during configuration |
11e865c1 GP |
64 | insn.subdev=5; //encoder subdevice |
65 | insn.chanspec=CR_PACK(encoder_channel,0,AREF_OTHER); //encoder_channel | |
add74595 | 66 | //to configure |
11e865c1 GP |
67 | |
68 | comedi_do_insn(cf,&insn); //executing configuration | |
69 | */ | |
70 | ||
25436dc9 | 71 | #include <linux/interrupt.h> |
11e865c1 GP |
72 | #include <linux/kernel.h> |
73 | #include <linux/types.h> | |
74 | ||
75 | #include "../comedidev.h" | |
76 | ||
77 | #include "comedi_pci.h" | |
78 | ||
79 | #include "comedi_fc.h" | |
80 | #include "s626.h" | |
81 | ||
82 | MODULE_AUTHOR("Gianluca Palli <gpalli@deis.unibo.it>"); | |
83 | MODULE_DESCRIPTION("Sensoray 626 Comedi driver module"); | |
84 | MODULE_LICENSE("GPL"); | |
85 | ||
eb5e029e | 86 | struct s626_board { |
11e865c1 GP |
87 | const char *name; |
88 | int ai_chans; | |
89 | int ai_bits; | |
90 | int ao_chans; | |
91 | int ao_bits; | |
92 | int dio_chans; | |
93 | int dio_banks; | |
94 | int enc_chans; | |
eb5e029e | 95 | }; |
11e865c1 | 96 | |
eb5e029e | 97 | static const struct s626_board s626_boards[] = { |
11e865c1 | 98 | { |
0a85b6f0 MT |
99 | .name = "s626", |
100 | .ai_chans = S626_ADC_CHANNELS, | |
101 | .ai_bits = 14, | |
102 | .ao_chans = S626_DAC_CHANNELS, | |
103 | .ao_bits = 13, | |
104 | .dio_chans = S626_DIO_CHANNELS, | |
105 | .dio_banks = S626_DIO_BANKS, | |
106 | .enc_chans = S626_ENCODER_CHANNELS, | |
107 | } | |
11e865c1 GP |
108 | }; |
109 | ||
eb5e029e | 110 | #define thisboard ((const struct s626_board *)dev->board_ptr) |
11e865c1 GP |
111 | #define PCI_VENDOR_ID_S626 0x1131 |
112 | #define PCI_DEVICE_ID_S626 0x7146 | |
113 | ||
8231eb56 HRK |
114 | /* |
115 | * For devices with vendor:device id == 0x1131:0x7146 you must specify | |
116 | * also subvendor:subdevice ids, because otherwise it will conflict with | |
117 | * Philips SAA7146 media/dvb based cards. | |
118 | */ | |
11e865c1 | 119 | static DEFINE_PCI_DEVICE_TABLE(s626_pci_table) = { |
8231eb56 | 120 | {PCI_VENDOR_ID_S626, PCI_DEVICE_ID_S626, 0x6000, 0x0272, 0, 0, 0}, |
11e865c1 GP |
121 | {0} |
122 | }; | |
123 | ||
124 | MODULE_DEVICE_TABLE(pci, s626_pci_table); | |
125 | ||
0707bb04 | 126 | static int s626_attach(struct comedi_device *dev, struct comedi_devconfig *it); |
71b5f4f1 | 127 | static int s626_detach(struct comedi_device *dev); |
11e865c1 | 128 | |
139dfbdf | 129 | static struct comedi_driver driver_s626 = { |
b4918808 BP |
130 | .driver_name = "s626", |
131 | .module = THIS_MODULE, | |
132 | .attach = s626_attach, | |
133 | .detach = s626_detach, | |
11e865c1 GP |
134 | }; |
135 | ||
eb5e029e | 136 | struct s626_private { |
11e865c1 GP |
137 | struct pci_dev *pdev; |
138 | void *base_addr; | |
139 | int got_regions; | |
140 | short allocatedBuf; | |
b6c77757 BP |
141 | uint8_t ai_cmd_running; /* ai_cmd is running */ |
142 | uint8_t ai_continous; /* continous aquisition */ | |
9d220c6b | 143 | int ai_sample_count; /* number of samples to acquire */ |
b6c77757 BP |
144 | unsigned int ai_sample_timer; |
145 | /* time between samples in units of the timer */ | |
146 | int ai_convert_count; /* conversion counter */ | |
147 | unsigned int ai_convert_timer; | |
148 | /* time between conversion in units of the timer */ | |
149 | uint16_t CounterIntEnabs; | |
150 | /* Counter interrupt enable mask for MISC2 register. */ | |
151 | uint8_t AdcItems; /* Number of items in ADC poll list. */ | |
0a85b6f0 | 152 | struct bufferDMA RPSBuf; /* DMA buffer used to hold ADC (RPS1) program. */ |
4753d235 | 153 | struct bufferDMA ANABuf; |
b6c77757 BP |
154 | /* DMA buffer used to receive ADC data and hold DAC data. */ |
155 | uint32_t *pDacWBuf; | |
156 | /* Pointer to logical adrs of DMA buffer used to hold DAC data. */ | |
157 | uint16_t Dacpol; /* Image of DAC polarity register. */ | |
158 | uint8_t TrimSetpoint[12]; /* Images of TrimDAC setpoints */ | |
159 | uint16_t ChargeEnabled; /* Image of MISC2 Battery */ | |
160 | /* Charge Enabled (0 or WRMISC2_CHARGE_ENABLE). */ | |
161 | uint16_t WDInterval; /* Image of MISC2 watchdog interval control bits. */ | |
162 | uint32_t I2CAdrs; | |
163 | /* I2C device address for onboard EEPROM (board rev dependent). */ | |
164 | /* short I2Cards; */ | |
790c5541 | 165 | unsigned int ao_readback[S626_DAC_CHANNELS]; |
eb5e029e | 166 | }; |
11e865c1 | 167 | |
eb5e029e | 168 | struct dio_private { |
11e865c1 GP |
169 | uint16_t RDDIn; |
170 | uint16_t WRDOut; | |
171 | uint16_t RDEdgSel; | |
172 | uint16_t WREdgSel; | |
173 | uint16_t RDCapSel; | |
174 | uint16_t WRCapSel; | |
175 | uint16_t RDCapFlg; | |
176 | uint16_t RDIntSel; | |
177 | uint16_t WRIntSel; | |
eb5e029e | 178 | }; |
11e865c1 | 179 | |
eb5e029e | 180 | static struct dio_private dio_private_A = { |
b4918808 BP |
181 | .RDDIn = LP_RDDINA, |
182 | .WRDOut = LP_WRDOUTA, | |
183 | .RDEdgSel = LP_RDEDGSELA, | |
184 | .WREdgSel = LP_WREDGSELA, | |
185 | .RDCapSel = LP_RDCAPSELA, | |
186 | .WRCapSel = LP_WRCAPSELA, | |
187 | .RDCapFlg = LP_RDCAPFLGA, | |
188 | .RDIntSel = LP_RDINTSELA, | |
189 | .WRIntSel = LP_WRINTSELA, | |
11e865c1 GP |
190 | }; |
191 | ||
eb5e029e | 192 | static struct dio_private dio_private_B = { |
b4918808 BP |
193 | .RDDIn = LP_RDDINB, |
194 | .WRDOut = LP_WRDOUTB, | |
195 | .RDEdgSel = LP_RDEDGSELB, | |
196 | .WREdgSel = LP_WREDGSELB, | |
197 | .RDCapSel = LP_RDCAPSELB, | |
198 | .WRCapSel = LP_WRCAPSELB, | |
199 | .RDCapFlg = LP_RDCAPFLGB, | |
200 | .RDIntSel = LP_RDINTSELB, | |
201 | .WRIntSel = LP_WRINTSELB, | |
11e865c1 GP |
202 | }; |
203 | ||
eb5e029e | 204 | static struct dio_private dio_private_C = { |
b4918808 BP |
205 | .RDDIn = LP_RDDINC, |
206 | .WRDOut = LP_WRDOUTC, | |
207 | .RDEdgSel = LP_RDEDGSELC, | |
208 | .WREdgSel = LP_WREDGSELC, | |
209 | .RDCapSel = LP_RDCAPSELC, | |
210 | .WRCapSel = LP_WRCAPSELC, | |
211 | .RDCapFlg = LP_RDCAPFLGC, | |
212 | .RDIntSel = LP_RDINTSELC, | |
213 | .WRIntSel = LP_WRINTSELC, | |
11e865c1 GP |
214 | }; |
215 | ||
216 | /* to group dio devices (48 bits mask and data are not allowed ???) | |
eb5e029e | 217 | static struct dio_private *dio_private_word[]={ |
11e865c1 GP |
218 | &dio_private_A, |
219 | &dio_private_B, | |
220 | &dio_private_C, | |
221 | }; | |
222 | */ | |
223 | ||
eb5e029e BP |
224 | #define devpriv ((struct s626_private *)dev->private) |
225 | #define diopriv ((struct dio_private *)s->private) | |
11e865c1 | 226 | |
727b286b AT |
227 | static int __devinit driver_s626_pci_probe(struct pci_dev *dev, |
228 | const struct pci_device_id *ent) | |
229 | { | |
230 | return comedi_pci_auto_config(dev, driver_s626.driver_name); | |
231 | } | |
232 | ||
233 | static void __devexit driver_s626_pci_remove(struct pci_dev *dev) | |
234 | { | |
235 | comedi_pci_auto_unconfig(dev); | |
236 | } | |
237 | ||
238 | static struct pci_driver driver_s626_pci_driver = { | |
239 | .id_table = s626_pci_table, | |
240 | .probe = &driver_s626_pci_probe, | |
241 | .remove = __devexit_p(&driver_s626_pci_remove) | |
242 | }; | |
243 | ||
244 | static int __init driver_s626_init_module(void) | |
245 | { | |
246 | int retval; | |
247 | ||
248 | retval = comedi_driver_register(&driver_s626); | |
249 | if (retval < 0) | |
250 | return retval; | |
251 | ||
252 | driver_s626_pci_driver.name = (char *)driver_s626.driver_name; | |
253 | return pci_register_driver(&driver_s626_pci_driver); | |
254 | } | |
255 | ||
256 | static void __exit driver_s626_cleanup_module(void) | |
257 | { | |
258 | pci_unregister_driver(&driver_s626_pci_driver); | |
259 | comedi_driver_unregister(&driver_s626); | |
260 | } | |
261 | ||
262 | module_init(driver_s626_init_module); | |
263 | module_exit(driver_s626_cleanup_module); | |
11e865c1 | 264 | |
b6c77757 | 265 | /* ioctl routines */ |
0a85b6f0 MT |
266 | static int s626_ai_insn_config(struct comedi_device *dev, |
267 | struct comedi_subdevice *s, | |
268 | struct comedi_insn *insn, unsigned int *data); | |
90035c08 | 269 | /* static int s626_ai_rinsn(struct comedi_device *dev,struct comedi_subdevice *s,struct comedi_insn *insn,unsigned int *data); */ |
0a85b6f0 MT |
270 | static int s626_ai_insn_read(struct comedi_device *dev, |
271 | struct comedi_subdevice *s, | |
272 | struct comedi_insn *insn, unsigned int *data); | |
34c43922 | 273 | static int s626_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s); |
0a85b6f0 MT |
274 | static int s626_ai_cmdtest(struct comedi_device *dev, |
275 | struct comedi_subdevice *s, struct comedi_cmd *cmd); | |
276 | static int s626_ai_cancel(struct comedi_device *dev, | |
277 | struct comedi_subdevice *s); | |
34c43922 | 278 | static int s626_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 279 | struct comedi_insn *insn, unsigned int *data); |
34c43922 | 280 | static int s626_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 MT |
281 | struct comedi_insn *insn, unsigned int *data); |
282 | static int s626_dio_insn_bits(struct comedi_device *dev, | |
283 | struct comedi_subdevice *s, | |
284 | struct comedi_insn *insn, unsigned int *data); | |
285 | static int s626_dio_insn_config(struct comedi_device *dev, | |
286 | struct comedi_subdevice *s, | |
287 | struct comedi_insn *insn, unsigned int *data); | |
71b5f4f1 BP |
288 | static int s626_dio_set_irq(struct comedi_device *dev, unsigned int chan); |
289 | static int s626_dio_reset_irq(struct comedi_device *dev, unsigned int gruop, | |
0a85b6f0 | 290 | unsigned int mask); |
71b5f4f1 | 291 | static int s626_dio_clear_irq(struct comedi_device *dev); |
0a85b6f0 MT |
292 | static int s626_enc_insn_config(struct comedi_device *dev, |
293 | struct comedi_subdevice *s, | |
294 | struct comedi_insn *insn, unsigned int *data); | |
295 | static int s626_enc_insn_read(struct comedi_device *dev, | |
296 | struct comedi_subdevice *s, | |
297 | struct comedi_insn *insn, unsigned int *data); | |
298 | static int s626_enc_insn_write(struct comedi_device *dev, | |
299 | struct comedi_subdevice *s, | |
300 | struct comedi_insn *insn, unsigned int *data); | |
11e865c1 | 301 | static int s626_ns_to_timer(int *nanosec, int round_mode); |
add74595 | 302 | static int s626_ai_load_polllist(uint8_t *ppl, struct comedi_cmd *cmd); |
0a85b6f0 MT |
303 | static int s626_ai_inttrig(struct comedi_device *dev, |
304 | struct comedi_subdevice *s, unsigned int trignum); | |
70265d24 | 305 | static irqreturn_t s626_irq_handler(int irq, void *d); |
790c5541 | 306 | static unsigned int s626_ai_reg_to_uint(int data); |
34c43922 | 307 | /* static unsigned int s626_uint_to_reg(struct comedi_subdevice *s, int data); */ |
11e865c1 | 308 | |
b6c77757 | 309 | /* end ioctl routines */ |
11e865c1 | 310 | |
b6c77757 | 311 | /* internal routines */ |
71b5f4f1 | 312 | static void s626_dio_init(struct comedi_device *dev); |
0a85b6f0 | 313 | static void ResetADC(struct comedi_device *dev, uint8_t * ppl); |
71b5f4f1 BP |
314 | static void LoadTrimDACs(struct comedi_device *dev); |
315 | static void WriteTrimDAC(struct comedi_device *dev, uint8_t LogicalChan, | |
0a85b6f0 | 316 | uint8_t DacData); |
71b5f4f1 BP |
317 | static uint8_t I2Cread(struct comedi_device *dev, uint8_t addr); |
318 | static uint32_t I2Chandshake(struct comedi_device *dev, uint32_t val); | |
319 | static void SetDAC(struct comedi_device *dev, uint16_t chan, short dacdata); | |
320 | static void SendDAC(struct comedi_device *dev, uint32_t val); | |
321 | static void WriteMISC2(struct comedi_device *dev, uint16_t NewImage); | |
322 | static void DEBItransfer(struct comedi_device *dev); | |
323 | static uint16_t DEBIread(struct comedi_device *dev, uint16_t addr); | |
324 | static void DEBIwrite(struct comedi_device *dev, uint16_t addr, uint16_t wdata); | |
325 | static void DEBIreplace(struct comedi_device *dev, uint16_t addr, uint16_t mask, | |
0a85b6f0 MT |
326 | uint16_t wdata); |
327 | static void CloseDMAB(struct comedi_device *dev, struct bufferDMA *pdma, | |
328 | size_t bsize); | |
11e865c1 | 329 | |
b6c77757 | 330 | /* COUNTER OBJECT ------------------------------------------------ */ |
eb5e029e | 331 | struct enc_private { |
b6c77757 | 332 | /* Pointers to functions that differ for A and B counters: */ |
add74595 JS |
333 | uint16_t(*GetEnable) (struct comedi_device *dev, struct enc_private *); /* Return clock enable. */ |
334 | uint16_t(*GetIntSrc) (struct comedi_device *dev, struct enc_private *); /* Return interrupt source. */ | |
335 | uint16_t(*GetLoadTrig) (struct comedi_device *dev, struct enc_private *); /* Return preload trigger source. */ | |
336 | uint16_t(*GetMode) (struct comedi_device *dev, struct enc_private *); /* Return standardized operating mode. */ | |
337 | void (*PulseIndex) (struct comedi_device *dev, struct enc_private *); /* Generate soft index strobe. */ | |
338 | void (*SetEnable) (struct comedi_device *dev, struct enc_private *, uint16_t enab); /* Program clock enable. */ | |
339 | void (*SetIntSrc) (struct comedi_device *dev, struct enc_private *, uint16_t IntSource); /* Program interrupt source. */ | |
340 | void (*SetLoadTrig) (struct comedi_device *dev, struct enc_private *, uint16_t Trig); /* Program preload trigger source. */ | |
341 | void (*SetMode) (struct comedi_device *dev, struct enc_private *, uint16_t Setup, uint16_t DisableIntSrc); /* Program standardized operating mode. */ | |
342 | void (*ResetCapFlags) (struct comedi_device *dev, struct enc_private *); /* Reset event capture flags. */ | |
b6c77757 BP |
343 | |
344 | uint16_t MyCRA; /* Address of CRA register. */ | |
345 | uint16_t MyCRB; /* Address of CRB register. */ | |
346 | uint16_t MyLatchLsw; /* Address of Latch least-significant-word */ | |
347 | /* register. */ | |
348 | uint16_t MyEventBits[4]; /* Bit translations for IntSrc -->RDMISC2. */ | |
eb5e029e | 349 | }; |
11e865c1 | 350 | |
eb5e029e | 351 | #define encpriv ((struct enc_private *)(dev->subdevices+5)->private) |
11e865c1 | 352 | |
b6c77757 | 353 | /* counters routines */ |
0a85b6f0 MT |
354 | static void s626_timer_load(struct comedi_device *dev, struct enc_private *k, |
355 | int tick); | |
71b5f4f1 BP |
356 | static uint32_t ReadLatch(struct comedi_device *dev, struct enc_private *k); |
357 | static void ResetCapFlags_A(struct comedi_device *dev, struct enc_private *k); | |
358 | static void ResetCapFlags_B(struct comedi_device *dev, struct enc_private *k); | |
359 | static uint16_t GetMode_A(struct comedi_device *dev, struct enc_private *k); | |
360 | static uint16_t GetMode_B(struct comedi_device *dev, struct enc_private *k); | |
0a85b6f0 MT |
361 | static void SetMode_A(struct comedi_device *dev, struct enc_private *k, |
362 | uint16_t Setup, uint16_t DisableIntSrc); | |
363 | static void SetMode_B(struct comedi_device *dev, struct enc_private *k, | |
364 | uint16_t Setup, uint16_t DisableIntSrc); | |
365 | static void SetEnable_A(struct comedi_device *dev, struct enc_private *k, | |
366 | uint16_t enab); | |
367 | static void SetEnable_B(struct comedi_device *dev, struct enc_private *k, | |
368 | uint16_t enab); | |
71b5f4f1 BP |
369 | static uint16_t GetEnable_A(struct comedi_device *dev, struct enc_private *k); |
370 | static uint16_t GetEnable_B(struct comedi_device *dev, struct enc_private *k); | |
371 | static void SetLatchSource(struct comedi_device *dev, struct enc_private *k, | |
0a85b6f0 | 372 | uint16_t value); |
71b5f4f1 | 373 | /* static uint16_t GetLatchSource(struct comedi_device *dev, struct enc_private *k ); */ |
0a85b6f0 MT |
374 | static void SetLoadTrig_A(struct comedi_device *dev, struct enc_private *k, |
375 | uint16_t Trig); | |
376 | static void SetLoadTrig_B(struct comedi_device *dev, struct enc_private *k, | |
377 | uint16_t Trig); | |
71b5f4f1 BP |
378 | static uint16_t GetLoadTrig_A(struct comedi_device *dev, struct enc_private *k); |
379 | static uint16_t GetLoadTrig_B(struct comedi_device *dev, struct enc_private *k); | |
380 | static void SetIntSrc_B(struct comedi_device *dev, struct enc_private *k, | |
0a85b6f0 | 381 | uint16_t IntSource); |
71b5f4f1 | 382 | static void SetIntSrc_A(struct comedi_device *dev, struct enc_private *k, |
0a85b6f0 | 383 | uint16_t IntSource); |
71b5f4f1 BP |
384 | static uint16_t GetIntSrc_A(struct comedi_device *dev, struct enc_private *k); |
385 | static uint16_t GetIntSrc_B(struct comedi_device *dev, struct enc_private *k); | |
386 | /* static void SetClkMult(struct comedi_device *dev, struct enc_private *k, uint16_t value ) ; */ | |
387 | /* static uint16_t GetClkMult(struct comedi_device *dev, struct enc_private *k ) ; */ | |
388 | /* static void SetIndexPol(struct comedi_device *dev, struct enc_private *k, uint16_t value ); */ | |
389 | /* static uint16_t GetClkPol(struct comedi_device *dev, struct enc_private *k ) ; */ | |
390 | /* static void SetIndexSrc( struct comedi_device *dev,struct enc_private *k, uint16_t value ); */ | |
391 | /* static uint16_t GetClkSrc( struct comedi_device *dev,struct enc_private *k ); */ | |
392 | /* static void SetIndexSrc( struct comedi_device *dev,struct enc_private *k, uint16_t value ); */ | |
393 | /* static uint16_t GetIndexSrc( struct comedi_device *dev,struct enc_private *k ); */ | |
394 | static void PulseIndex_A(struct comedi_device *dev, struct enc_private *k); | |
395 | static void PulseIndex_B(struct comedi_device *dev, struct enc_private *k); | |
0a85b6f0 MT |
396 | static void Preload(struct comedi_device *dev, struct enc_private *k, |
397 | uint32_t value); | |
71b5f4f1 | 398 | static void CountersInit(struct comedi_device *dev); |
b6c77757 | 399 | /* end internal routines */ |
11e865c1 | 400 | |
b6c77757 | 401 | /* Counter objects constructor. */ |
11e865c1 | 402 | |
b6c77757 | 403 | /* Counter overflow/index event flag masks for RDMISC2. */ |
6a98d36e BP |
404 | #define INDXMASK(C) (1 << (((C) > 2) ? ((C) * 2 - 1) : ((C) * 2 + 4))) |
405 | #define OVERMASK(C) (1 << (((C) > 2) ? ((C) * 2 + 5) : ((C) * 2 + 10))) | |
11e865c1 GP |
406 | #define EVBITS(C) { 0, OVERMASK(C), INDXMASK(C), OVERMASK(C) | INDXMASK(C) } |
407 | ||
b6c77757 BP |
408 | /* Translation table to map IntSrc into equivalent RDMISC2 event flag bits. */ |
409 | /* static const uint16_t EventBits[][4] = { EVBITS(0), EVBITS(1), EVBITS(2), EVBITS(3), EVBITS(4), EVBITS(5) }; */ | |
11e865c1 | 410 | |
eb5e029e BP |
411 | /* struct enc_private; */ |
412 | static struct enc_private enc_private_data[] = { | |
11e865c1 | 413 | { |
0a85b6f0 MT |
414 | .GetEnable = GetEnable_A, |
415 | .GetIntSrc = GetIntSrc_A, | |
416 | .GetLoadTrig = GetLoadTrig_A, | |
417 | .GetMode = GetMode_A, | |
418 | .PulseIndex = PulseIndex_A, | |
419 | .SetEnable = SetEnable_A, | |
420 | .SetIntSrc = SetIntSrc_A, | |
421 | .SetLoadTrig = SetLoadTrig_A, | |
422 | .SetMode = SetMode_A, | |
423 | .ResetCapFlags = ResetCapFlags_A, | |
424 | .MyCRA = LP_CR0A, | |
425 | .MyCRB = LP_CR0B, | |
426 | .MyLatchLsw = LP_CNTR0ALSW, | |
427 | .MyEventBits = EVBITS(0), | |
428 | }, | |
11e865c1 | 429 | { |
0a85b6f0 MT |
430 | .GetEnable = GetEnable_A, |
431 | .GetIntSrc = GetIntSrc_A, | |
432 | .GetLoadTrig = GetLoadTrig_A, | |
433 | .GetMode = GetMode_A, | |
434 | .PulseIndex = PulseIndex_A, | |
435 | .SetEnable = SetEnable_A, | |
436 | .SetIntSrc = SetIntSrc_A, | |
437 | .SetLoadTrig = SetLoadTrig_A, | |
438 | .SetMode = SetMode_A, | |
439 | .ResetCapFlags = ResetCapFlags_A, | |
440 | .MyCRA = LP_CR1A, | |
441 | .MyCRB = LP_CR1B, | |
442 | .MyLatchLsw = LP_CNTR1ALSW, | |
443 | .MyEventBits = EVBITS(1), | |
444 | }, | |
11e865c1 | 445 | { |
0a85b6f0 MT |
446 | .GetEnable = GetEnable_A, |
447 | .GetIntSrc = GetIntSrc_A, | |
448 | .GetLoadTrig = GetLoadTrig_A, | |
449 | .GetMode = GetMode_A, | |
450 | .PulseIndex = PulseIndex_A, | |
451 | .SetEnable = SetEnable_A, | |
452 | .SetIntSrc = SetIntSrc_A, | |
453 | .SetLoadTrig = SetLoadTrig_A, | |
454 | .SetMode = SetMode_A, | |
455 | .ResetCapFlags = ResetCapFlags_A, | |
456 | .MyCRA = LP_CR2A, | |
457 | .MyCRB = LP_CR2B, | |
458 | .MyLatchLsw = LP_CNTR2ALSW, | |
459 | .MyEventBits = EVBITS(2), | |
460 | }, | |
11e865c1 | 461 | { |
0a85b6f0 MT |
462 | .GetEnable = GetEnable_B, |
463 | .GetIntSrc = GetIntSrc_B, | |
464 | .GetLoadTrig = GetLoadTrig_B, | |
465 | .GetMode = GetMode_B, | |
466 | .PulseIndex = PulseIndex_B, | |
467 | .SetEnable = SetEnable_B, | |
468 | .SetIntSrc = SetIntSrc_B, | |
469 | .SetLoadTrig = SetLoadTrig_B, | |
470 | .SetMode = SetMode_B, | |
471 | .ResetCapFlags = ResetCapFlags_B, | |
472 | .MyCRA = LP_CR0A, | |
473 | .MyCRB = LP_CR0B, | |
474 | .MyLatchLsw = LP_CNTR0BLSW, | |
475 | .MyEventBits = EVBITS(3), | |
476 | }, | |
11e865c1 | 477 | { |
0a85b6f0 MT |
478 | .GetEnable = GetEnable_B, |
479 | .GetIntSrc = GetIntSrc_B, | |
480 | .GetLoadTrig = GetLoadTrig_B, | |
481 | .GetMode = GetMode_B, | |
482 | .PulseIndex = PulseIndex_B, | |
483 | .SetEnable = SetEnable_B, | |
484 | .SetIntSrc = SetIntSrc_B, | |
485 | .SetLoadTrig = SetLoadTrig_B, | |
486 | .SetMode = SetMode_B, | |
487 | .ResetCapFlags = ResetCapFlags_B, | |
488 | .MyCRA = LP_CR1A, | |
489 | .MyCRB = LP_CR1B, | |
490 | .MyLatchLsw = LP_CNTR1BLSW, | |
491 | .MyEventBits = EVBITS(4), | |
492 | }, | |
11e865c1 | 493 | { |
0a85b6f0 MT |
494 | .GetEnable = GetEnable_B, |
495 | .GetIntSrc = GetIntSrc_B, | |
496 | .GetLoadTrig = GetLoadTrig_B, | |
497 | .GetMode = GetMode_B, | |
498 | .PulseIndex = PulseIndex_B, | |
499 | .SetEnable = SetEnable_B, | |
500 | .SetIntSrc = SetIntSrc_B, | |
501 | .SetLoadTrig = SetLoadTrig_B, | |
502 | .SetMode = SetMode_B, | |
503 | .ResetCapFlags = ResetCapFlags_B, | |
504 | .MyCRA = LP_CR2A, | |
505 | .MyCRB = LP_CR2B, | |
506 | .MyLatchLsw = LP_CNTR2BLSW, | |
507 | .MyEventBits = EVBITS(5), | |
508 | }, | |
11e865c1 GP |
509 | }; |
510 | ||
b6c77757 BP |
511 | /* enab/disable a function or test status bit(s) that are accessed */ |
512 | /* through Main Control Registers 1 or 2. */ | |
6a98d36e | 513 | #define MC_ENABLE(REGADRS, CTRLWORD) writel(((uint32_t)(CTRLWORD) << 16) | (uint32_t)(CTRLWORD), devpriv->base_addr+(REGADRS)) |
11e865c1 | 514 | |
6a98d36e | 515 | #define MC_DISABLE(REGADRS, CTRLWORD) writel((uint32_t)(CTRLWORD) << 16 , devpriv->base_addr+(REGADRS)) |
11e865c1 | 516 | |
6a98d36e | 517 | #define MC_TEST(REGADRS, CTRLWORD) ((readl(devpriv->base_addr+(REGADRS)) & CTRLWORD) != 0) |
11e865c1 GP |
518 | |
519 | /* #define WR7146(REGARDS,CTRLWORD) | |
520 | writel(CTRLWORD,(uint32_t)(devpriv->base_addr+(REGARDS))) */ | |
8086fff8 | 521 | #define WR7146(REGARDS, CTRLWORD) writel(CTRLWORD, devpriv->base_addr+(REGARDS)) |
11e865c1 GP |
522 | |
523 | /* #define RR7146(REGARDS) | |
524 | readl((uint32_t)(devpriv->base_addr+(REGARDS))) */ | |
525 | #define RR7146(REGARDS) readl(devpriv->base_addr+(REGARDS)) | |
526 | ||
6a98d36e | 527 | #define BUGFIX_STREG(REGADRS) (REGADRS - 4) |
11e865c1 | 528 | |
b6c77757 | 529 | /* Write a time slot control record to TSL2. */ |
6a98d36e BP |
530 | #define VECTPORT(VECTNUM) (P_TSL2 + ((VECTNUM) << 2)) |
531 | #define SETVECT(VECTNUM, VECTVAL) WR7146(VECTPORT(VECTNUM), (VECTVAL)) | |
11e865c1 | 532 | |
b6c77757 | 533 | /* Code macros used for constructing I2C command bytes. */ |
6a98d36e BP |
534 | #define I2C_B2(ATTR, VAL) (((ATTR) << 6) | ((VAL) << 24)) |
535 | #define I2C_B1(ATTR, VAL) (((ATTR) << 4) | ((VAL) << 16)) | |
536 | #define I2C_B0(ATTR, VAL) (((ATTR) << 2) | ((VAL) << 8)) | |
11e865c1 | 537 | |
9ced1de6 | 538 | static const struct comedi_lrange s626_range_table = { 2, { |
0a85b6f0 MT |
539 | RANGE(-5, 5), |
540 | RANGE(-10, 10), | |
541 | } | |
11e865c1 GP |
542 | }; |
543 | ||
0707bb04 | 544 | static int s626_attach(struct comedi_device *dev, struct comedi_devconfig *it) |
11e865c1 GP |
545 | { |
546 | /* uint8_t PollList; */ | |
547 | /* uint16_t AdcData; */ | |
548 | /* uint16_t StartVal; */ | |
549 | /* uint16_t index; */ | |
550 | /* unsigned int data[16]; */ | |
551 | int result; | |
552 | int i; | |
553 | int ret; | |
554 | resource_size_t resourceStart; | |
555 | dma_addr_t appdma; | |
34c43922 | 556 | struct comedi_subdevice *s; |
8231eb56 HRK |
557 | const struct pci_device_id *ids; |
558 | struct pci_dev *pdev = NULL; | |
11e865c1 | 559 | |
eb5e029e | 560 | if (alloc_private(dev, sizeof(struct s626_private)) < 0) |
11e865c1 GP |
561 | return -ENOMEM; |
562 | ||
8231eb56 HRK |
563 | for (i = 0; i < (ARRAY_SIZE(s626_pci_table) - 1) && !pdev; i++) { |
564 | ids = &s626_pci_table[i]; | |
565 | do { | |
0a85b6f0 MT |
566 | pdev = pci_get_subsys(ids->vendor, ids->device, |
567 | ids->subvendor, ids->subdevice, | |
568 | pdev); | |
8231eb56 HRK |
569 | |
570 | if ((it->options[0] || it->options[1]) && pdev) { | |
11e865c1 | 571 | /* matches requested bus/slot */ |
8231eb56 HRK |
572 | if (pdev->bus->number == it->options[0] && |
573 | PCI_SLOT(pdev->devfn) == it->options[1]) | |
574 | break; | |
575 | } else | |
11e865c1 | 576 | break; |
8231eb56 | 577 | } while (1); |
11e865c1 GP |
578 | } |
579 | devpriv->pdev = pdev; | |
580 | ||
581 | if (pdev == NULL) { | |
daca497d | 582 | printk(KERN_ERR "s626_attach: Board not present!!!\n"); |
11e865c1 GP |
583 | return -ENODEV; |
584 | } | |
585 | ||
197c82bf BP |
586 | result = comedi_pci_enable(pdev, "s626"); |
587 | if (result < 0) { | |
daca497d | 588 | printk(KERN_ERR "s626_attach: comedi_pci_enable fails\n"); |
11e865c1 GP |
589 | return -ENODEV; |
590 | } | |
591 | devpriv->got_regions = 1; | |
592 | ||
593 | resourceStart = pci_resource_start(devpriv->pdev, 0); | |
594 | ||
595 | devpriv->base_addr = ioremap(resourceStart, SIZEOF_ADDRESS_SPACE); | |
596 | if (devpriv->base_addr == NULL) { | |
daca497d | 597 | printk(KERN_ERR "s626_attach: IOREMAP failed\n"); |
11e865c1 GP |
598 | return -ENODEV; |
599 | } | |
600 | ||
601 | if (devpriv->base_addr) { | |
b6c77757 | 602 | /* disable master interrupt */ |
11e865c1 GP |
603 | writel(0, devpriv->base_addr + P_IER); |
604 | ||
b6c77757 | 605 | /* soft reset */ |
11e865c1 GP |
606 | writel(MC1_SOFT_RESET, devpriv->base_addr + P_MC1); |
607 | ||
b6c77757 | 608 | /* DMA FIXME DMA// */ |
11e865c1 GP |
609 | DEBUG("s626_attach: DMA ALLOCATION\n"); |
610 | ||
b6c77757 | 611 | /* adc buffer allocation */ |
11e865c1 GP |
612 | devpriv->allocatedBuf = 0; |
613 | ||
197c82bf | 614 | devpriv->ANABuf.LogicalBase = |
0a85b6f0 | 615 | pci_alloc_consistent(devpriv->pdev, DMABUF_SIZE, &appdma); |
197c82bf BP |
616 | |
617 | if (devpriv->ANABuf.LogicalBase == NULL) { | |
daca497d | 618 | printk(KERN_ERR "s626_attach: DMA Memory mapping error\n"); |
11e865c1 GP |
619 | return -ENOMEM; |
620 | } | |
621 | ||
622 | devpriv->ANABuf.PhysicalBase = appdma; | |
623 | ||
0a85b6f0 MT |
624 | DEBUG |
625 | ("s626_attach: AllocDMAB ADC Logical=%p, bsize=%d, Physical=0x%x\n", | |
626 | devpriv->ANABuf.LogicalBase, DMABUF_SIZE, | |
627 | (uint32_t) devpriv->ANABuf.PhysicalBase); | |
11e865c1 GP |
628 | |
629 | devpriv->allocatedBuf++; | |
630 | ||
197c82bf | 631 | devpriv->RPSBuf.LogicalBase = |
0a85b6f0 | 632 | pci_alloc_consistent(devpriv->pdev, DMABUF_SIZE, &appdma); |
197c82bf BP |
633 | |
634 | if (devpriv->RPSBuf.LogicalBase == NULL) { | |
daca497d | 635 | printk(KERN_ERR "s626_attach: DMA Memory mapping error\n"); |
11e865c1 GP |
636 | return -ENOMEM; |
637 | } | |
638 | ||
639 | devpriv->RPSBuf.PhysicalBase = appdma; | |
640 | ||
0a85b6f0 MT |
641 | DEBUG |
642 | ("s626_attach: AllocDMAB RPS Logical=%p, bsize=%d, Physical=0x%x\n", | |
643 | devpriv->RPSBuf.LogicalBase, DMABUF_SIZE, | |
644 | (uint32_t) devpriv->RPSBuf.PhysicalBase); | |
11e865c1 GP |
645 | |
646 | devpriv->allocatedBuf++; | |
647 | ||
648 | } | |
649 | ||
650 | dev->board_ptr = s626_boards; | |
651 | dev->board_name = thisboard->name; | |
652 | ||
653 | if (alloc_subdevices(dev, 6) < 0) | |
654 | return -ENOMEM; | |
655 | ||
656 | dev->iobase = (unsigned long)devpriv->base_addr; | |
657 | dev->irq = devpriv->pdev->irq; | |
658 | ||
b6c77757 | 659 | /* set up interrupt handler */ |
11e865c1 | 660 | if (dev->irq == 0) { |
daca497d | 661 | printk(KERN_ERR " unknown irq (bad)\n"); |
11e865c1 | 662 | } else { |
5f74ea14 GKH |
663 | ret = request_irq(dev->irq, s626_irq_handler, IRQF_SHARED, |
664 | "s626", dev); | |
197c82bf BP |
665 | |
666 | if (ret < 0) { | |
daca497d | 667 | printk(KERN_ERR " irq not available\n"); |
11e865c1 GP |
668 | dev->irq = 0; |
669 | } | |
670 | } | |
671 | ||
daca497d | 672 | DEBUG("s626_attach: -- it opts %d,%d --\n", |
0a85b6f0 | 673 | it->options[0], it->options[1]); |
11e865c1 GP |
674 | |
675 | s = dev->subdevices + 0; | |
676 | /* analog input subdevice */ | |
677 | dev->read_subdev = s; | |
678 | /* we support single-ended (ground) and differential */ | |
679 | s->type = COMEDI_SUBD_AI; | |
680 | s->subdev_flags = SDF_READABLE | SDF_DIFF | SDF_CMD_READ; | |
681 | s->n_chan = thisboard->ai_chans; | |
682 | s->maxdata = (0xffff >> 2); | |
683 | s->range_table = &s626_range_table; | |
684 | s->len_chanlist = thisboard->ai_chans; /* This is the maximum chanlist | |
685 | length that the board can | |
686 | handle */ | |
687 | s->insn_config = s626_ai_insn_config; | |
688 | s->insn_read = s626_ai_insn_read; | |
689 | s->do_cmd = s626_ai_cmd; | |
690 | s->do_cmdtest = s626_ai_cmdtest; | |
691 | s->cancel = s626_ai_cancel; | |
692 | ||
693 | s = dev->subdevices + 1; | |
694 | /* analog output subdevice */ | |
695 | s->type = COMEDI_SUBD_AO; | |
696 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE; | |
697 | s->n_chan = thisboard->ao_chans; | |
698 | s->maxdata = (0x3fff); | |
699 | s->range_table = &range_bipolar10; | |
700 | s->insn_write = s626_ao_winsn; | |
701 | s->insn_read = s626_ao_rinsn; | |
702 | ||
703 | s = dev->subdevices + 2; | |
704 | /* digital I/O subdevice */ | |
705 | s->type = COMEDI_SUBD_DIO; | |
706 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE; | |
707 | s->n_chan = S626_DIO_CHANNELS; | |
708 | s->maxdata = 1; | |
709 | s->io_bits = 0xffff; | |
710 | s->private = &dio_private_A; | |
711 | s->range_table = &range_digital; | |
712 | s->insn_config = s626_dio_insn_config; | |
713 | s->insn_bits = s626_dio_insn_bits; | |
714 | ||
715 | s = dev->subdevices + 3; | |
716 | /* digital I/O subdevice */ | |
717 | s->type = COMEDI_SUBD_DIO; | |
718 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE; | |
719 | s->n_chan = 16; | |
720 | s->maxdata = 1; | |
721 | s->io_bits = 0xffff; | |
722 | s->private = &dio_private_B; | |
723 | s->range_table = &range_digital; | |
724 | s->insn_config = s626_dio_insn_config; | |
725 | s->insn_bits = s626_dio_insn_bits; | |
726 | ||
727 | s = dev->subdevices + 4; | |
728 | /* digital I/O subdevice */ | |
729 | s->type = COMEDI_SUBD_DIO; | |
730 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE; | |
731 | s->n_chan = 16; | |
732 | s->maxdata = 1; | |
733 | s->io_bits = 0xffff; | |
734 | s->private = &dio_private_C; | |
735 | s->range_table = &range_digital; | |
736 | s->insn_config = s626_dio_insn_config; | |
737 | s->insn_bits = s626_dio_insn_bits; | |
738 | ||
739 | s = dev->subdevices + 5; | |
740 | /* encoder (counter) subdevice */ | |
741 | s->type = COMEDI_SUBD_COUNTER; | |
742 | s->subdev_flags = SDF_WRITABLE | SDF_READABLE | SDF_LSAMPL; | |
743 | s->n_chan = thisboard->enc_chans; | |
744 | s->private = enc_private_data; | |
745 | s->insn_config = s626_enc_insn_config; | |
746 | s->insn_read = s626_enc_insn_read; | |
747 | s->insn_write = s626_enc_insn_write; | |
748 | s->maxdata = 0xffffff; | |
749 | s->range_table = &range_unknown; | |
750 | ||
b6c77757 | 751 | /* stop ai_command */ |
11e865c1 GP |
752 | devpriv->ai_cmd_running = 0; |
753 | ||
754 | if (devpriv->base_addr && (devpriv->allocatedBuf == 2)) { | |
755 | dma_addr_t pPhysBuf; | |
756 | uint16_t chan; | |
757 | ||
b6c77757 | 758 | /* enab DEBI and audio pins, enable I2C interface. */ |
11e865c1 | 759 | MC_ENABLE(P_MC1, MC1_DEBI | MC1_AUDIO | MC1_I2C); |
b6c77757 BP |
760 | /* Configure DEBI operating mode. */ |
761 | WR7146(P_DEBICFG, DEBI_CFG_SLAVE16 /* Local bus is 16 */ | |
0a85b6f0 MT |
762 | /* bits wide. */ |
763 | | (DEBI_TOUT << DEBI_CFG_TOUT_BIT) | |
764 | ||
765 | /* Declare DEBI */ | |
766 | /* transfer timeout */ | |
767 | /* interval. */ | |
768 | |DEBI_SWAP /* Set up byte lane */ | |
769 | /* steering. */ | |
770 | | DEBI_CFG_INTEL); /* Intel-compatible */ | |
b6c77757 BP |
771 | /* local bus (DEBI */ |
772 | /* never times out). */ | |
11e865c1 | 773 | DEBUG("s626_attach: %d debi init -- %d\n", |
0a85b6f0 MT |
774 | DEBI_CFG_SLAVE16 | (DEBI_TOUT << DEBI_CFG_TOUT_BIT) | |
775 | DEBI_SWAP | DEBI_CFG_INTEL, | |
776 | DEBI_CFG_INTEL | DEBI_CFG_TOQ | DEBI_CFG_INCQ | | |
777 | DEBI_CFG_16Q); | |
11e865c1 | 778 | |
b6c77757 BP |
779 | /* DEBI INIT S626 WR7146( P_DEBICFG, DEBI_CFG_INTEL | DEBI_CFG_TOQ */ |
780 | /* | DEBI_CFG_INCQ| DEBI_CFG_16Q); //end */ | |
11e865c1 | 781 | |
b6c77757 BP |
782 | /* Paging is disabled. */ |
783 | WR7146(P_DEBIPAGE, DEBI_PAGE_DISABLE); /* Disable MMU paging. */ | |
11e865c1 | 784 | |
b6c77757 | 785 | /* Init GPIO so that ADC Start* is negated. */ |
11e865c1 GP |
786 | WR7146(P_GPIO, GPIO_BASE | GPIO1_HI); |
787 | ||
0a85b6f0 MT |
788 | /* IsBoardRevA is a boolean that indicates whether the board is RevA. |
789 | * | |
790 | * VERSION 2.01 CHANGE: REV A & B BOARDS NOW SUPPORTED BY DYNAMIC | |
791 | * EEPROM ADDRESS SELECTION. Initialize the I2C interface, which | |
792 | * is used to access the onboard serial EEPROM. The EEPROM's I2C | |
793 | * DeviceAddress is hardwired to a value that is dependent on the | |
794 | * 626 board revision. On all board revisions, the EEPROM stores | |
795 | * TrimDAC calibration constants for analog I/O. On RevB and | |
796 | * higher boards, the DeviceAddress is hardwired to 0 to enable | |
797 | * the EEPROM to also store the PCI SubVendorID and SubDeviceID; | |
798 | * this is the address at which the SAA7146 expects a | |
799 | * configuration EEPROM to reside. On RevA boards, the EEPROM | |
800 | * device address, which is hardwired to 4, prevents the SAA7146 | |
801 | * from retrieving PCI sub-IDs, so the SAA7146 uses its built-in | |
802 | * default values, instead. | |
803 | */ | |
b6c77757 BP |
804 | |
805 | /* devpriv->I2Cards= IsBoardRevA ? 0xA8 : 0xA0; // Set I2C EEPROM */ | |
806 | /* DeviceType (0xA0) */ | |
807 | /* and DeviceAddress<<1. */ | |
808 | ||
809 | devpriv->I2CAdrs = 0xA0; /* I2C device address for onboard */ | |
810 | /* eeprom(revb) */ | |
811 | ||
812 | /* Issue an I2C ABORT command to halt any I2C operation in */ | |
813 | /* progress and reset BUSY flag. */ | |
814 | WR7146(P_I2CSTAT, I2C_CLKSEL | I2C_ABORT); | |
815 | /* Write I2C control: abort any I2C activity. */ | |
816 | MC_ENABLE(P_MC2, MC2_UPLD_IIC); | |
817 | /* Invoke command upload */ | |
add74595 | 818 | while ((RR7146(P_MC2) & MC2_UPLD_IIC) == 0) |
ae6eb75c | 819 | ; |
b6c77757 BP |
820 | /* and wait for upload to complete. */ |
821 | ||
822 | /* Per SAA7146 data sheet, write to STATUS reg twice to | |
823 | * reset all I2C error flags. */ | |
11e865c1 | 824 | for (i = 0; i < 2; i++) { |
b6c77757 BP |
825 | WR7146(P_I2CSTAT, I2C_CLKSEL); |
826 | /* Write I2C control: reset error flags. */ | |
827 | MC_ENABLE(P_MC2, MC2_UPLD_IIC); /* Invoke command upload */ | |
add74595 | 828 | while (!MC_TEST(P_MC2, MC2_UPLD_IIC)) |
ae6eb75c | 829 | ; |
b6c77757 | 830 | /* and wait for upload to complete. */ |
11e865c1 GP |
831 | } |
832 | ||
b6c77757 BP |
833 | /* Init audio interface functional attributes: set DAC/ADC |
834 | * serial clock rates, invert DAC serial clock so that | |
835 | * DAC data setup times are satisfied, enable DAC serial | |
836 | * clock out. | |
837 | */ | |
838 | ||
11e865c1 GP |
839 | WR7146(P_ACON2, ACON2_INIT); |
840 | ||
b6c77757 BP |
841 | /* Set up TSL1 slot list, which is used to control the |
842 | * accumulation of ADC data: RSD1 = shift data in on SD1. | |
843 | * SIB_A1 = store data uint8_t at next available location in | |
844 | * FB BUFFER1 register. */ | |
845 | WR7146(P_TSL1, RSD1 | SIB_A1); | |
846 | /* Fetch ADC high data uint8_t. */ | |
847 | WR7146(P_TSL1 + 4, RSD1 | SIB_A1 | EOS); | |
848 | /* Fetch ADC low data uint8_t; end of TSL1. */ | |
849 | ||
850 | /* enab TSL1 slot list so that it executes all the time. */ | |
11e865c1 GP |
851 | WR7146(P_ACON1, ACON1_ADCSTART); |
852 | ||
b6c77757 | 853 | /* Initialize RPS registers used for ADC. */ |
11e865c1 | 854 | |
b6c77757 | 855 | /* Physical start of RPS program. */ |
11e865c1 GP |
856 | WR7146(P_RPSADDR1, (uint32_t) devpriv->RPSBuf.PhysicalBase); |
857 | ||
b6c77757 BP |
858 | WR7146(P_RPSPAGE1, 0); |
859 | /* RPS program performs no explicit mem writes. */ | |
860 | WR7146(P_RPS1_TOUT, 0); /* Disable RPS timeouts. */ | |
11e865c1 | 861 | |
b6c77757 BP |
862 | /* SAA7146 BUG WORKAROUND. Initialize SAA7146 ADC interface |
863 | * to a known state by invoking ADCs until FB BUFFER 1 | |
864 | * register shows that it is correctly receiving ADC data. | |
865 | * This is necessary because the SAA7146 ADC interface does | |
866 | * not start up in a defined state after a PCI reset. | |
867 | */ | |
11e865c1 | 868 | |
ae6eb75c JS |
869 | /* PollList = EOPL; // Create a simple polling */ |
870 | /* // list for analog input */ | |
871 | /* // channel 0. */ | |
11e865c1 GP |
872 | /* ResetADC( dev, &PollList ); */ |
873 | ||
874 | /* s626_ai_rinsn(dev,dev->subdevices,NULL,data); //( &AdcData ); // */ | |
ae6eb75c JS |
875 | /* //Get initial ADC */ |
876 | /* //value. */ | |
11e865c1 GP |
877 | |
878 | /* StartVal = data[0]; */ | |
879 | ||
880 | /* // VERSION 2.01 CHANGE: TIMEOUT ADDED TO PREVENT HANGED EXECUTION. */ | |
881 | /* // Invoke ADCs until the new ADC value differs from the initial */ | |
882 | /* // value or a timeout occurs. The timeout protects against the */ | |
883 | /* // possibility that the driver is restarting and the ADC data is a */ | |
884 | /* // fixed value resulting from the applied ADC analog input being */ | |
885 | /* // unusually quiet or at the rail. */ | |
886 | ||
887 | /* for ( index = 0; index < 500; index++ ) */ | |
888 | /* { */ | |
ae6eb75c JS |
889 | /* s626_ai_rinsn(dev,dev->subdevices,NULL,data); */ |
890 | /* AdcData = data[0]; //ReadADC( &AdcData ); */ | |
891 | /* if ( AdcData != StartVal ) */ | |
892 | /* break; */ | |
11e865c1 GP |
893 | /* } */ |
894 | ||
b6c77757 | 895 | /* end initADC */ |
11e865c1 | 896 | |
b6c77757 | 897 | /* init the DAC interface */ |
11e865c1 | 898 | |
b6c77757 BP |
899 | /* Init Audio2's output DMAC attributes: burst length = 1 |
900 | * DWORD, threshold = 1 DWORD. | |
901 | */ | |
11e865c1 GP |
902 | WR7146(P_PCI_BT_A, 0); |
903 | ||
b6c77757 BP |
904 | /* Init Audio2's output DMA physical addresses. The protection |
905 | * address is set to 1 DWORD past the base address so that a | |
906 | * single DWORD will be transferred each time a DMA transfer is | |
907 | * enabled. */ | |
11e865c1 GP |
908 | |
909 | pPhysBuf = | |
0a85b6f0 MT |
910 | devpriv->ANABuf.PhysicalBase + |
911 | (DAC_WDMABUF_OS * sizeof(uint32_t)); | |
11e865c1 | 912 | |
b6c77757 BP |
913 | WR7146(P_BASEA2_OUT, (uint32_t) pPhysBuf); /* Buffer base adrs. */ |
914 | WR7146(P_PROTA2_OUT, (uint32_t) (pPhysBuf + sizeof(uint32_t))); /* Protection address. */ | |
11e865c1 | 915 | |
b6c77757 BP |
916 | /* Cache Audio2's output DMA buffer logical address. This is |
917 | * where DAC data is buffered for A2 output DMA transfers. */ | |
11e865c1 | 918 | devpriv->pDacWBuf = |
0a85b6f0 | 919 | (uint32_t *) devpriv->ANABuf.LogicalBase + DAC_WDMABUF_OS; |
11e865c1 | 920 | |
b6c77757 BP |
921 | /* Audio2's output channels does not use paging. The protection |
922 | * violation handling bit is set so that the DMAC will | |
923 | * automatically halt and its PCI address pointer will be reset | |
924 | * when the protection address is reached. */ | |
925 | ||
11e865c1 GP |
926 | WR7146(P_PAGEA2_OUT, 8); |
927 | ||
b6c77757 BP |
928 | /* Initialize time slot list 2 (TSL2), which is used to control |
929 | * the clock generation for and serialization of data to be sent | |
930 | * to the DAC devices. Slot 0 is a NOP that is used to trap TSL | |
931 | * execution; this permits other slots to be safely modified | |
932 | * without first turning off the TSL sequencer (which is | |
933 | * apparently impossible to do). Also, SD3 (which is driven by a | |
934 | * pull-up resistor) is shifted in and stored to the MSB of | |
935 | * FB_BUFFER2 to be used as evidence that the slot sequence has | |
936 | * not yet finished executing. | |
937 | */ | |
938 | ||
939 | SETVECT(0, XSD2 | RSD3 | SIB_A2 | EOS); | |
940 | /* Slot 0: Trap TSL execution, shift 0xFF into FB_BUFFER2. */ | |
941 | ||
942 | /* Initialize slot 1, which is constant. Slot 1 causes a | |
943 | * DWORD to be transferred from audio channel 2's output FIFO | |
944 | * to the FIFO's output buffer so that it can be serialized | |
945 | * and sent to the DAC during subsequent slots. All remaining | |
946 | * slots are dynamically populated as required by the target | |
947 | * DAC device. | |
948 | */ | |
949 | SETVECT(1, LF_A2); | |
950 | /* Slot 1: Fetch DWORD from Audio2's output FIFO. */ | |
951 | ||
952 | /* Start DAC's audio interface (TSL2) running. */ | |
11e865c1 GP |
953 | WR7146(P_ACON1, ACON1_DACSTART); |
954 | ||
b6c77757 | 955 | /* end init DAC interface */ |
11e865c1 | 956 | |
b6c77757 BP |
957 | /* Init Trim DACs to calibrated values. Do it twice because the |
958 | * SAA7146 audio channel does not always reset properly and | |
959 | * sometimes causes the first few TrimDAC writes to malfunction. | |
960 | */ | |
11e865c1 GP |
961 | |
962 | LoadTrimDACs(dev); | |
b6c77757 | 963 | LoadTrimDACs(dev); /* Insurance. */ |
11e865c1 | 964 | |
b6c77757 BP |
965 | /* Manually init all gate array hardware in case this is a soft |
966 | * reset (we have no way of determining whether this is a warm | |
967 | * or cold start). This is necessary because the gate array will | |
968 | * reset only in response to a PCI hard reset; there is no soft | |
969 | * reset function. */ | |
11e865c1 | 970 | |
b6c77757 BP |
971 | /* Init all DAC outputs to 0V and init all DAC setpoint and |
972 | * polarity images. | |
973 | */ | |
11e865c1 GP |
974 | for (chan = 0; chan < S626_DAC_CHANNELS; chan++) |
975 | SetDAC(dev, chan, 0); | |
976 | ||
b6c77757 BP |
977 | /* Init image of WRMISC2 Battery Charger Enabled control bit. |
978 | * This image is used when the state of the charger control bit, | |
979 | * which has no direct hardware readback mechanism, is queried. | |
980 | */ | |
11e865c1 GP |
981 | devpriv->ChargeEnabled = 0; |
982 | ||
b6c77757 BP |
983 | /* Init image of watchdog timer interval in WRMISC2. This image |
984 | * maintains the value of the control bits of MISC2 are | |
985 | * continuously reset to zero as long as the WD timer is disabled. | |
986 | */ | |
11e865c1 GP |
987 | devpriv->WDInterval = 0; |
988 | ||
b6c77757 BP |
989 | /* Init Counter Interrupt enab mask for RDMISC2. This mask is |
990 | * applied against MISC2 when testing to determine which timer | |
991 | * events are requesting interrupt service. | |
992 | */ | |
11e865c1 GP |
993 | devpriv->CounterIntEnabs = 0; |
994 | ||
b6c77757 | 995 | /* Init counters. */ |
11e865c1 GP |
996 | CountersInit(dev); |
997 | ||
b6c77757 BP |
998 | /* Without modifying the state of the Battery Backup enab, disable |
999 | * the watchdog timer, set DIO channels 0-5 to operate in the | |
1000 | * standard DIO (vs. counter overflow) mode, disable the battery | |
1001 | * charger, and reset the watchdog interval selector to zero. | |
1002 | */ | |
11e865c1 | 1003 | WriteMISC2(dev, (uint16_t) (DEBIread(dev, |
0a85b6f0 MT |
1004 | LP_RDMISC2) & |
1005 | MISC2_BATT_ENABLE)); | |
11e865c1 | 1006 | |
b6c77757 | 1007 | /* Initialize the digital I/O subsystem. */ |
11e865c1 GP |
1008 | s626_dio_init(dev); |
1009 | ||
b6c77757 BP |
1010 | /* enable interrupt test */ |
1011 | /* writel(IRQ_GPIO3 | IRQ_RPS1,devpriv->base_addr+P_IER); */ | |
11e865c1 GP |
1012 | } |
1013 | ||
1014 | DEBUG("s626_attach: comedi%d s626 attached %04x\n", dev->minor, | |
0a85b6f0 | 1015 | (uint32_t) devpriv->base_addr); |
11e865c1 GP |
1016 | |
1017 | return 1; | |
1018 | } | |
1019 | ||
790c5541 | 1020 | static unsigned int s626_ai_reg_to_uint(int data) |
11e865c1 | 1021 | { |
790c5541 | 1022 | unsigned int tempdata; |
11e865c1 GP |
1023 | |
1024 | tempdata = (data >> 18); | |
1025 | if (tempdata & 0x2000) | |
1026 | tempdata &= 0x1fff; | |
1027 | else | |
1028 | tempdata += (1 << 13); | |
1029 | ||
1030 | return tempdata; | |
1031 | } | |
1032 | ||
34c43922 | 1033 | /* static unsigned int s626_uint_to_reg(struct comedi_subdevice *s, int data){ */ |
11e865c1 GP |
1034 | /* return 0; */ |
1035 | /* } */ | |
1036 | ||
70265d24 | 1037 | static irqreturn_t s626_irq_handler(int irq, void *d) |
11e865c1 | 1038 | { |
71b5f4f1 | 1039 | struct comedi_device *dev = d; |
34c43922 | 1040 | struct comedi_subdevice *s; |
ea6d0d4c | 1041 | struct comedi_cmd *cmd; |
eb5e029e | 1042 | struct enc_private *k; |
11e865c1 GP |
1043 | unsigned long flags; |
1044 | int32_t *readaddr; | |
1045 | uint32_t irqtype, irqstatus; | |
1046 | int i = 0; | |
790c5541 | 1047 | short tempdata; |
11e865c1 GP |
1048 | uint8_t group; |
1049 | uint16_t irqbit; | |
1050 | ||
1051 | DEBUG("s626_irq_handler: interrupt request recieved!!!\n"); | |
1052 | ||
1053 | if (dev->attached == 0) | |
1054 | return IRQ_NONE; | |
b6c77757 | 1055 | /* lock to avoid race with comedi_poll */ |
5f74ea14 | 1056 | spin_lock_irqsave(&dev->spinlock, flags); |
11e865c1 | 1057 | |
b6c77757 | 1058 | /* save interrupt enable register state */ |
11e865c1 GP |
1059 | irqstatus = readl(devpriv->base_addr + P_IER); |
1060 | ||
b6c77757 | 1061 | /* read interrupt type */ |
11e865c1 GP |
1062 | irqtype = readl(devpriv->base_addr + P_ISR); |
1063 | ||
b6c77757 | 1064 | /* disable master interrupt */ |
11e865c1 GP |
1065 | writel(0, devpriv->base_addr + P_IER); |
1066 | ||
b6c77757 | 1067 | /* clear interrupt */ |
11e865c1 GP |
1068 | writel(irqtype, devpriv->base_addr + P_ISR); |
1069 | ||
b6c77757 | 1070 | /* do somethings */ |
11e865c1 GP |
1071 | DEBUG("s626_irq_handler: interrupt type %d\n", irqtype); |
1072 | ||
1073 | switch (irqtype) { | |
b6c77757 | 1074 | case IRQ_RPS1: /* end_of_scan occurs */ |
11e865c1 GP |
1075 | |
1076 | DEBUG("s626_irq_handler: RPS1 irq detected\n"); | |
1077 | ||
b6c77757 | 1078 | /* manage ai subdevice */ |
11e865c1 GP |
1079 | s = dev->subdevices; |
1080 | cmd = &(s->async->cmd); | |
1081 | ||
b6c77757 BP |
1082 | /* Init ptr to DMA buffer that holds new ADC data. We skip the |
1083 | * first uint16_t in the buffer because it contains junk data from | |
1084 | * the final ADC of the previous poll list scan. | |
1085 | */ | |
11e865c1 GP |
1086 | readaddr = (int32_t *) devpriv->ANABuf.LogicalBase + 1; |
1087 | ||
b6c77757 | 1088 | /* get the data and hand it over to comedi */ |
11e865c1 | 1089 | for (i = 0; i < (s->async->cmd.chanlist_len); i++) { |
b6c77757 BP |
1090 | /* Convert ADC data to 16-bit integer values and copy to application */ |
1091 | /* buffer. */ | |
11e865c1 GP |
1092 | tempdata = s626_ai_reg_to_uint((int)*readaddr); |
1093 | readaddr++; | |
1094 | ||
b6c77757 BP |
1095 | /* put data into read buffer */ |
1096 | /* comedi_buf_put(s->async, tempdata); */ | |
11e865c1 | 1097 | if (cfc_write_to_buffer(s, tempdata) == 0) |
0a85b6f0 MT |
1098 | printk |
1099 | ("s626_irq_handler: cfc_write_to_buffer error!\n"); | |
11e865c1 GP |
1100 | |
1101 | DEBUG("s626_irq_handler: ai channel %d acquired: %d\n", | |
0a85b6f0 | 1102 | i, tempdata); |
11e865c1 GP |
1103 | } |
1104 | ||
b6c77757 | 1105 | /* end of scan occurs */ |
11e865c1 GP |
1106 | s->async->events |= COMEDI_CB_EOS; |
1107 | ||
1108 | if (!(devpriv->ai_continous)) | |
1109 | devpriv->ai_sample_count--; | |
1110 | if (devpriv->ai_sample_count <= 0) { | |
1111 | devpriv->ai_cmd_running = 0; | |
1112 | ||
b6c77757 | 1113 | /* Stop RPS program. */ |
11e865c1 GP |
1114 | MC_DISABLE(P_MC1, MC1_ERPS1); |
1115 | ||
b6c77757 | 1116 | /* send end of acquisition */ |
11e865c1 GP |
1117 | s->async->events |= COMEDI_CB_EOA; |
1118 | ||
b6c77757 | 1119 | /* disable master interrupt */ |
11e865c1 GP |
1120 | irqstatus = 0; |
1121 | } | |
1122 | ||
1123 | if (devpriv->ai_cmd_running && cmd->scan_begin_src == TRIG_EXT) { | |
0a85b6f0 MT |
1124 | DEBUG |
1125 | ("s626_irq_handler: enable interrupt on dio channel %d\n", | |
1126 | cmd->scan_begin_arg); | |
11e865c1 GP |
1127 | |
1128 | s626_dio_set_irq(dev, cmd->scan_begin_arg); | |
1129 | ||
1130 | DEBUG("s626_irq_handler: External trigger is set!!!\n"); | |
1131 | } | |
b6c77757 | 1132 | /* tell comedi that data is there */ |
11e865c1 GP |
1133 | DEBUG("s626_irq_handler: events %d\n", s->async->events); |
1134 | comedi_event(dev, s); | |
1135 | break; | |
b6c77757 | 1136 | case IRQ_GPIO3: /* check dio and conter interrupt */ |
11e865c1 GP |
1137 | |
1138 | DEBUG("s626_irq_handler: GPIO3 irq detected\n"); | |
1139 | ||
b6c77757 | 1140 | /* manage ai subdevice */ |
11e865c1 GP |
1141 | s = dev->subdevices; |
1142 | cmd = &(s->async->cmd); | |
1143 | ||
b6c77757 | 1144 | /* s626_dio_clear_irq(dev); */ |
11e865c1 GP |
1145 | |
1146 | for (group = 0; group < S626_DIO_BANKS; group++) { | |
1147 | irqbit = 0; | |
b6c77757 | 1148 | /* read interrupt type */ |
11e865c1 | 1149 | irqbit = DEBIread(dev, |
0a85b6f0 MT |
1150 | ((struct dio_private *)(dev-> |
1151 | subdevices + | |
1152 | 2 + | |
1153 | group)-> | |
1154 | private)->RDCapFlg); | |
11e865c1 | 1155 | |
b6c77757 | 1156 | /* check if interrupt is generated from dio channels */ |
11e865c1 GP |
1157 | if (irqbit) { |
1158 | s626_dio_reset_irq(dev, group, irqbit); | |
0a85b6f0 MT |
1159 | DEBUG |
1160 | ("s626_irq_handler: check interrupt on dio group %d %d\n", | |
1161 | group, i); | |
11e865c1 | 1162 | if (devpriv->ai_cmd_running) { |
b6c77757 | 1163 | /* check if interrupt is an ai acquisition start trigger */ |
11e865c1 | 1164 | if ((irqbit >> (cmd->start_arg - |
0a85b6f0 MT |
1165 | (16 * group))) |
1166 | == 1 && cmd->start_src == TRIG_EXT) { | |
1167 | DEBUG | |
1168 | ("s626_irq_handler: Edge capture interrupt recieved from channel %d\n", | |
1169 | cmd->start_arg); | |
11e865c1 | 1170 | |
b6c77757 | 1171 | /* Start executing the RPS program. */ |
11e865c1 GP |
1172 | MC_ENABLE(P_MC1, MC1_ERPS1); |
1173 | ||
0a85b6f0 MT |
1174 | DEBUG |
1175 | ("s626_irq_handler: aquisition start triggered!!!\n"); | |
11e865c1 GP |
1176 | |
1177 | if (cmd->scan_begin_src == | |
0a85b6f0 MT |
1178 | TRIG_EXT) { |
1179 | DEBUG | |
1180 | ("s626_ai_cmd: enable interrupt on dio channel %d\n", | |
1181 | cmd-> | |
1182 | scan_begin_arg); | |
11e865c1 GP |
1183 | |
1184 | s626_dio_set_irq(dev, | |
0a85b6f0 | 1185 | cmd->scan_begin_arg); |
11e865c1 | 1186 | |
0a85b6f0 MT |
1187 | DEBUG |
1188 | ("s626_irq_handler: External scan trigger is set!!!\n"); | |
11e865c1 GP |
1189 | } |
1190 | } | |
1191 | if ((irqbit >> (cmd->scan_begin_arg - | |
0a85b6f0 MT |
1192 | (16 * group))) |
1193 | == 1 | |
1194 | && cmd->scan_begin_src == | |
1195 | TRIG_EXT) { | |
1196 | DEBUG | |
1197 | ("s626_irq_handler: Edge capture interrupt recieved from channel %d\n", | |
1198 | cmd->scan_begin_arg); | |
11e865c1 | 1199 | |
b6c77757 | 1200 | /* Trigger ADC scan loop start by setting RPS Signal 0. */ |
11e865c1 GP |
1201 | MC_ENABLE(P_MC2, MC2_ADC_RPS); |
1202 | ||
0a85b6f0 MT |
1203 | DEBUG |
1204 | ("s626_irq_handler: scan triggered!!! %d\n", | |
1205 | devpriv->ai_sample_count); | |
11e865c1 | 1206 | if (cmd->convert_src == |
0a85b6f0 | 1207 | TRIG_EXT) { |
11e865c1 | 1208 | |
0a85b6f0 MT |
1209 | DEBUG |
1210 | ("s626_ai_cmd: enable interrupt on dio channel %d group %d\n", | |
1211 | cmd->convert_arg - | |
1212 | (16 * group), | |
1213 | group); | |
11e865c1 | 1214 | |
0a85b6f0 MT |
1215 | devpriv->ai_convert_count |
1216 | = cmd->chanlist_len; | |
11e865c1 GP |
1217 | |
1218 | s626_dio_set_irq(dev, | |
0a85b6f0 | 1219 | cmd->convert_arg); |
11e865c1 | 1220 | |
0a85b6f0 MT |
1221 | DEBUG |
1222 | ("s626_irq_handler: External convert trigger is set!!!\n"); | |
11e865c1 GP |
1223 | } |
1224 | ||
1225 | if (cmd->convert_src == | |
0a85b6f0 | 1226 | TRIG_TIMER) { |
11e865c1 | 1227 | k = &encpriv[5]; |
0a85b6f0 MT |
1228 | devpriv->ai_convert_count |
1229 | = cmd->chanlist_len; | |
11e865c1 | 1230 | k->SetEnable(dev, k, |
0a85b6f0 | 1231 | CLKENAB_ALWAYS); |
11e865c1 GP |
1232 | } |
1233 | } | |
1234 | if ((irqbit >> (cmd->convert_arg - | |
0a85b6f0 MT |
1235 | (16 * group))) |
1236 | == 1 | |
1237 | && cmd->convert_src == TRIG_EXT) { | |
1238 | DEBUG | |
1239 | ("s626_irq_handler: Edge capture interrupt recieved from channel %d\n", | |
1240 | cmd->convert_arg); | |
11e865c1 | 1241 | |
b6c77757 | 1242 | /* Trigger ADC scan loop start by setting RPS Signal 0. */ |
11e865c1 GP |
1243 | MC_ENABLE(P_MC2, MC2_ADC_RPS); |
1244 | ||
0a85b6f0 MT |
1245 | DEBUG |
1246 | ("s626_irq_handler: adc convert triggered!!!\n"); | |
11e865c1 GP |
1247 | |
1248 | devpriv->ai_convert_count--; | |
1249 | ||
1250 | if (devpriv->ai_convert_count > | |
0a85b6f0 | 1251 | 0) { |
11e865c1 | 1252 | |
0a85b6f0 MT |
1253 | DEBUG |
1254 | ("s626_ai_cmd: enable interrupt on dio channel %d group %d\n", | |
1255 | cmd->convert_arg - | |
1256 | (16 * group), | |
1257 | group); | |
11e865c1 GP |
1258 | |
1259 | s626_dio_set_irq(dev, | |
0a85b6f0 | 1260 | cmd->convert_arg); |
11e865c1 | 1261 | |
0a85b6f0 MT |
1262 | DEBUG |
1263 | ("s626_irq_handler: External trigger is set!!!\n"); | |
11e865c1 GP |
1264 | } |
1265 | } | |
1266 | } | |
1267 | break; | |
1268 | } | |
1269 | } | |
1270 | ||
b6c77757 | 1271 | /* read interrupt type */ |
11e865c1 GP |
1272 | irqbit = DEBIread(dev, LP_RDMISC2); |
1273 | ||
b6c77757 | 1274 | /* check interrupt on counters */ |
11e865c1 | 1275 | DEBUG("s626_irq_handler: check counters interrupt %d\n", |
0a85b6f0 | 1276 | irqbit); |
11e865c1 GP |
1277 | |
1278 | if (irqbit & IRQ_COINT1A) { | |
0a85b6f0 MT |
1279 | DEBUG |
1280 | ("s626_irq_handler: interrupt on counter 1A overflow\n"); | |
11e865c1 GP |
1281 | k = &encpriv[0]; |
1282 | ||
b6c77757 | 1283 | /* clear interrupt capture flag */ |
11e865c1 GP |
1284 | k->ResetCapFlags(dev, k); |
1285 | } | |
1286 | if (irqbit & IRQ_COINT2A) { | |
0a85b6f0 MT |
1287 | DEBUG |
1288 | ("s626_irq_handler: interrupt on counter 2A overflow\n"); | |
11e865c1 GP |
1289 | k = &encpriv[1]; |
1290 | ||
b6c77757 | 1291 | /* clear interrupt capture flag */ |
11e865c1 GP |
1292 | k->ResetCapFlags(dev, k); |
1293 | } | |
1294 | if (irqbit & IRQ_COINT3A) { | |
0a85b6f0 MT |
1295 | DEBUG |
1296 | ("s626_irq_handler: interrupt on counter 3A overflow\n"); | |
11e865c1 GP |
1297 | k = &encpriv[2]; |
1298 | ||
b6c77757 | 1299 | /* clear interrupt capture flag */ |
11e865c1 GP |
1300 | k->ResetCapFlags(dev, k); |
1301 | } | |
1302 | if (irqbit & IRQ_COINT1B) { | |
0a85b6f0 MT |
1303 | DEBUG |
1304 | ("s626_irq_handler: interrupt on counter 1B overflow\n"); | |
11e865c1 GP |
1305 | k = &encpriv[3]; |
1306 | ||
b6c77757 | 1307 | /* clear interrupt capture flag */ |
11e865c1 GP |
1308 | k->ResetCapFlags(dev, k); |
1309 | } | |
1310 | if (irqbit & IRQ_COINT2B) { | |
0a85b6f0 MT |
1311 | DEBUG |
1312 | ("s626_irq_handler: interrupt on counter 2B overflow\n"); | |
11e865c1 GP |
1313 | k = &encpriv[4]; |
1314 | ||
b6c77757 | 1315 | /* clear interrupt capture flag */ |
11e865c1 GP |
1316 | k->ResetCapFlags(dev, k); |
1317 | ||
1318 | if (devpriv->ai_convert_count > 0) { | |
1319 | devpriv->ai_convert_count--; | |
1320 | if (devpriv->ai_convert_count == 0) | |
1321 | k->SetEnable(dev, k, CLKENAB_INDEX); | |
1322 | ||
1323 | if (cmd->convert_src == TRIG_TIMER) { | |
0a85b6f0 MT |
1324 | DEBUG |
1325 | ("s626_irq_handler: conver timer trigger!!! %d\n", | |
1326 | devpriv->ai_convert_count); | |
11e865c1 | 1327 | |
b6c77757 | 1328 | /* Trigger ADC scan loop start by setting RPS Signal 0. */ |
11e865c1 GP |
1329 | MC_ENABLE(P_MC2, MC2_ADC_RPS); |
1330 | } | |
1331 | } | |
1332 | } | |
1333 | if (irqbit & IRQ_COINT3B) { | |
0a85b6f0 MT |
1334 | DEBUG |
1335 | ("s626_irq_handler: interrupt on counter 3B overflow\n"); | |
11e865c1 GP |
1336 | k = &encpriv[5]; |
1337 | ||
b6c77757 | 1338 | /* clear interrupt capture flag */ |
11e865c1 GP |
1339 | k->ResetCapFlags(dev, k); |
1340 | ||
1341 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
0a85b6f0 MT |
1342 | DEBUG |
1343 | ("s626_irq_handler: scan timer trigger!!!\n"); | |
11e865c1 | 1344 | |
b6c77757 | 1345 | /* Trigger ADC scan loop start by setting RPS Signal 0. */ |
11e865c1 GP |
1346 | MC_ENABLE(P_MC2, MC2_ADC_RPS); |
1347 | } | |
1348 | ||
1349 | if (cmd->convert_src == TRIG_TIMER) { | |
0a85b6f0 MT |
1350 | DEBUG |
1351 | ("s626_irq_handler: convert timer trigger is set\n"); | |
11e865c1 GP |
1352 | k = &encpriv[4]; |
1353 | devpriv->ai_convert_count = cmd->chanlist_len; | |
1354 | k->SetEnable(dev, k, CLKENAB_ALWAYS); | |
1355 | } | |
1356 | } | |
1357 | } | |
1358 | ||
b6c77757 | 1359 | /* enable interrupt */ |
11e865c1 GP |
1360 | writel(irqstatus, devpriv->base_addr + P_IER); |
1361 | ||
1362 | DEBUG("s626_irq_handler: exit interrupt service routine.\n"); | |
1363 | ||
5f74ea14 | 1364 | spin_unlock_irqrestore(&dev->spinlock, flags); |
11e865c1 GP |
1365 | return IRQ_HANDLED; |
1366 | } | |
1367 | ||
71b5f4f1 | 1368 | static int s626_detach(struct comedi_device *dev) |
11e865c1 GP |
1369 | { |
1370 | if (devpriv) { | |
b6c77757 | 1371 | /* stop ai_command */ |
11e865c1 GP |
1372 | devpriv->ai_cmd_running = 0; |
1373 | ||
1374 | if (devpriv->base_addr) { | |
b6c77757 BP |
1375 | /* interrupt mask */ |
1376 | WR7146(P_IER, 0); /* Disable master interrupt. */ | |
1377 | WR7146(P_ISR, IRQ_GPIO3 | IRQ_RPS1); /* Clear board's IRQ status flag. */ | |
11e865c1 | 1378 | |
b6c77757 | 1379 | /* Disable the watchdog timer and battery charger. */ |
11e865c1 GP |
1380 | WriteMISC2(dev, 0); |
1381 | ||
b6c77757 | 1382 | /* Close all interfaces on 7146 device. */ |
11e865c1 GP |
1383 | WR7146(P_MC1, MC1_SHUTDOWN); |
1384 | WR7146(P_ACON1, ACON1_BASE); | |
1385 | ||
1386 | CloseDMAB(dev, &devpriv->RPSBuf, DMABUF_SIZE); | |
1387 | CloseDMAB(dev, &devpriv->ANABuf, DMABUF_SIZE); | |
1388 | } | |
1389 | ||
82675f35 | 1390 | if (dev->irq) |
5f74ea14 | 1391 | free_irq(dev->irq, dev); |
11e865c1 | 1392 | |
82675f35 | 1393 | if (devpriv->base_addr) |
11e865c1 | 1394 | iounmap(devpriv->base_addr); |
11e865c1 GP |
1395 | |
1396 | if (devpriv->pdev) { | |
82675f35 | 1397 | if (devpriv->got_regions) |
11e865c1 | 1398 | comedi_pci_disable(devpriv->pdev); |
11e865c1 GP |
1399 | pci_dev_put(devpriv->pdev); |
1400 | } | |
1401 | } | |
1402 | ||
1403 | DEBUG("s626_detach: S626 detached!\n"); | |
1404 | ||
1405 | return 0; | |
1406 | } | |
1407 | ||
1408 | /* | |
1409 | * this functions build the RPS program for hardware driven acquistion | |
1410 | */ | |
0a85b6f0 | 1411 | void ResetADC(struct comedi_device *dev, uint8_t * ppl) |
11e865c1 GP |
1412 | { |
1413 | register uint32_t *pRPS; | |
1414 | uint32_t JmpAdrs; | |
1415 | uint16_t i; | |
1416 | uint16_t n; | |
1417 | uint32_t LocalPPL; | |
ea6d0d4c | 1418 | struct comedi_cmd *cmd = &(dev->subdevices->async->cmd); |
11e865c1 | 1419 | |
b6c77757 | 1420 | /* Stop RPS program in case it is currently running. */ |
11e865c1 GP |
1421 | MC_DISABLE(P_MC1, MC1_ERPS1); |
1422 | ||
b6c77757 | 1423 | /* Set starting logical address to write RPS commands. */ |
11e865c1 GP |
1424 | pRPS = (uint32_t *) devpriv->RPSBuf.LogicalBase; |
1425 | ||
b6c77757 | 1426 | /* Initialize RPS instruction pointer. */ |
11e865c1 GP |
1427 | WR7146(P_RPSADDR1, (uint32_t) devpriv->RPSBuf.PhysicalBase); |
1428 | ||
b6c77757 | 1429 | /* Construct RPS program in RPSBuf DMA buffer */ |
11e865c1 GP |
1430 | |
1431 | if (cmd != NULL && cmd->scan_begin_src != TRIG_FOLLOW) { | |
1432 | DEBUG("ResetADC: scan_begin pause inserted\n"); | |
b6c77757 | 1433 | /* Wait for Start trigger. */ |
11e865c1 GP |
1434 | *pRPS++ = RPS_PAUSE | RPS_SIGADC; |
1435 | *pRPS++ = RPS_CLRSIGNAL | RPS_SIGADC; | |
1436 | } | |
b6c77757 BP |
1437 | |
1438 | /* SAA7146 BUG WORKAROUND Do a dummy DEBI Write. This is necessary | |
1439 | * because the first RPS DEBI Write following a non-RPS DEBI write | |
1440 | * seems to always fail. If we don't do this dummy write, the ADC | |
1441 | * gain might not be set to the value required for the first slot in | |
1442 | * the poll list; the ADC gain would instead remain unchanged from | |
1443 | * the previously programmed value. | |
1444 | */ | |
1445 | *pRPS++ = RPS_LDREG | (P_DEBICMD >> 2); | |
1446 | /* Write DEBI Write command and address to shadow RAM. */ | |
1447 | ||
11e865c1 | 1448 | *pRPS++ = DEBI_CMD_WRWORD | LP_GSEL; |
b6c77757 BP |
1449 | *pRPS++ = RPS_LDREG | (P_DEBIAD >> 2); |
1450 | /* Write DEBI immediate data to shadow RAM: */ | |
1451 | ||
1452 | *pRPS++ = GSEL_BIPOLAR5V; | |
1453 | /* arbitrary immediate data value. */ | |
1454 | ||
1455 | *pRPS++ = RPS_CLRSIGNAL | RPS_DEBI; | |
1456 | /* Reset "shadow RAM uploaded" flag. */ | |
1457 | *pRPS++ = RPS_UPLOAD | RPS_DEBI; /* Invoke shadow RAM upload. */ | |
1458 | *pRPS++ = RPS_PAUSE | RPS_DEBI; /* Wait for shadow upload to finish. */ | |
1459 | ||
1460 | /* Digitize all slots in the poll list. This is implemented as a | |
1461 | * for loop to limit the slot count to 16 in case the application | |
1462 | * forgot to set the EOPL flag in the final slot. | |
1463 | */ | |
11e865c1 | 1464 | for (devpriv->AdcItems = 0; devpriv->AdcItems < 16; devpriv->AdcItems++) { |
0a85b6f0 MT |
1465 | /* Convert application's poll list item to private board class |
1466 | * format. Each app poll list item is an uint8_t with form | |
1467 | * (EOPL,x,x,RANGE,CHAN<3:0>), where RANGE code indicates 0 = | |
1468 | * +-10V, 1 = +-5V, and EOPL = End of Poll List marker. | |
1469 | */ | |
11e865c1 | 1470 | LocalPPL = |
0a85b6f0 MT |
1471 | (*ppl << 8) | (*ppl & 0x10 ? GSEL_BIPOLAR5V : |
1472 | GSEL_BIPOLAR10V); | |
11e865c1 | 1473 | |
b6c77757 BP |
1474 | /* Switch ADC analog gain. */ |
1475 | *pRPS++ = RPS_LDREG | (P_DEBICMD >> 2); /* Write DEBI command */ | |
1476 | /* and address to */ | |
1477 | /* shadow RAM. */ | |
11e865c1 | 1478 | *pRPS++ = DEBI_CMD_WRWORD | LP_GSEL; |
b6c77757 BP |
1479 | *pRPS++ = RPS_LDREG | (P_DEBIAD >> 2); /* Write DEBI */ |
1480 | /* immediate data to */ | |
1481 | /* shadow RAM. */ | |
11e865c1 | 1482 | *pRPS++ = LocalPPL; |
b6c77757 BP |
1483 | *pRPS++ = RPS_CLRSIGNAL | RPS_DEBI; /* Reset "shadow RAM uploaded" */ |
1484 | /* flag. */ | |
1485 | *pRPS++ = RPS_UPLOAD | RPS_DEBI; /* Invoke shadow RAM upload. */ | |
1486 | *pRPS++ = RPS_PAUSE | RPS_DEBI; /* Wait for shadow upload to */ | |
1487 | /* finish. */ | |
1488 | ||
1489 | /* Select ADC analog input channel. */ | |
1490 | *pRPS++ = RPS_LDREG | (P_DEBICMD >> 2); | |
1491 | /* Write DEBI command and address to shadow RAM. */ | |
11e865c1 | 1492 | *pRPS++ = DEBI_CMD_WRWORD | LP_ISEL; |
b6c77757 BP |
1493 | *pRPS++ = RPS_LDREG | (P_DEBIAD >> 2); |
1494 | /* Write DEBI immediate data to shadow RAM. */ | |
11e865c1 | 1495 | *pRPS++ = LocalPPL; |
b6c77757 BP |
1496 | *pRPS++ = RPS_CLRSIGNAL | RPS_DEBI; |
1497 | /* Reset "shadow RAM uploaded" flag. */ | |
1498 | ||
1499 | *pRPS++ = RPS_UPLOAD | RPS_DEBI; | |
1500 | /* Invoke shadow RAM upload. */ | |
1501 | ||
1502 | *pRPS++ = RPS_PAUSE | RPS_DEBI; | |
1503 | /* Wait for shadow upload to finish. */ | |
1504 | ||
1505 | /* Delay at least 10 microseconds for analog input settling. | |
1506 | * Instead of padding with NOPs, we use RPS_JUMP instructions | |
1507 | * here; this allows us to produce a longer delay than is | |
1508 | * possible with NOPs because each RPS_JUMP flushes the RPS' | |
1509 | * instruction prefetch pipeline. | |
1510 | */ | |
11e865c1 | 1511 | JmpAdrs = |
0a85b6f0 MT |
1512 | (uint32_t) devpriv->RPSBuf.PhysicalBase + |
1513 | (uint32_t) ((unsigned long)pRPS - | |
1514 | (unsigned long)devpriv->RPSBuf.LogicalBase); | |
11e865c1 | 1515 | for (i = 0; i < (10 * RPSCLK_PER_US / 2); i++) { |
b6c77757 BP |
1516 | JmpAdrs += 8; /* Repeat to implement time delay: */ |
1517 | *pRPS++ = RPS_JUMP; /* Jump to next RPS instruction. */ | |
11e865c1 GP |
1518 | *pRPS++ = JmpAdrs; |
1519 | } | |
1520 | ||
1521 | if (cmd != NULL && cmd->convert_src != TRIG_NOW) { | |
1522 | DEBUG("ResetADC: convert pause inserted\n"); | |
b6c77757 | 1523 | /* Wait for Start trigger. */ |
11e865c1 GP |
1524 | *pRPS++ = RPS_PAUSE | RPS_SIGADC; |
1525 | *pRPS++ = RPS_CLRSIGNAL | RPS_SIGADC; | |
1526 | } | |
b6c77757 BP |
1527 | /* Start ADC by pulsing GPIO1. */ |
1528 | *pRPS++ = RPS_LDREG | (P_GPIO >> 2); /* Begin ADC Start pulse. */ | |
11e865c1 GP |
1529 | *pRPS++ = GPIO_BASE | GPIO1_LO; |
1530 | *pRPS++ = RPS_NOP; | |
b6c77757 BP |
1531 | /* VERSION 2.03 CHANGE: STRETCH OUT ADC START PULSE. */ |
1532 | *pRPS++ = RPS_LDREG | (P_GPIO >> 2); /* End ADC Start pulse. */ | |
11e865c1 GP |
1533 | *pRPS++ = GPIO_BASE | GPIO1_HI; |
1534 | ||
b6c77757 BP |
1535 | /* Wait for ADC to complete (GPIO2 is asserted high when ADC not |
1536 | * busy) and for data from previous conversion to shift into FB | |
1537 | * BUFFER 1 register. | |
1538 | */ | |
1539 | *pRPS++ = RPS_PAUSE | RPS_GPIO2; /* Wait for ADC done. */ | |
11e865c1 | 1540 | |
b6c77757 | 1541 | /* Transfer ADC data from FB BUFFER 1 register to DMA buffer. */ |
11e865c1 GP |
1542 | *pRPS++ = RPS_STREG | (BUGFIX_STREG(P_FB_BUFFER1) >> 2); |
1543 | *pRPS++ = | |
0a85b6f0 MT |
1544 | (uint32_t) devpriv->ANABuf.PhysicalBase + |
1545 | (devpriv->AdcItems << 2); | |
11e865c1 | 1546 | |
b6c77757 BP |
1547 | /* If this slot's EndOfPollList flag is set, all channels have */ |
1548 | /* now been processed. */ | |
11e865c1 | 1549 | if (*ppl++ & EOPL) { |
b6c77757 BP |
1550 | devpriv->AdcItems++; /* Adjust poll list item count. */ |
1551 | break; /* Exit poll list processing loop. */ | |
11e865c1 GP |
1552 | } |
1553 | } | |
daca497d | 1554 | DEBUG("ResetADC: ADC items %d\n", devpriv->AdcItems); |
11e865c1 | 1555 | |
b6c77757 BP |
1556 | /* VERSION 2.01 CHANGE: DELAY CHANGED FROM 250NS to 2US. Allow the |
1557 | * ADC to stabilize for 2 microseconds before starting the final | |
1558 | * (dummy) conversion. This delay is necessary to allow sufficient | |
1559 | * time between last conversion finished and the start of the dummy | |
1560 | * conversion. Without this delay, the last conversion's data value | |
1561 | * is sometimes set to the previous conversion's data value. | |
1562 | */ | |
11e865c1 GP |
1563 | for (n = 0; n < (2 * RPSCLK_PER_US); n++) |
1564 | *pRPS++ = RPS_NOP; | |
1565 | ||
b6c77757 BP |
1566 | /* Start a dummy conversion to cause the data from the last |
1567 | * conversion of interest to be shifted in. | |
1568 | */ | |
1569 | *pRPS++ = RPS_LDREG | (P_GPIO >> 2); /* Begin ADC Start pulse. */ | |
11e865c1 GP |
1570 | *pRPS++ = GPIO_BASE | GPIO1_LO; |
1571 | *pRPS++ = RPS_NOP; | |
b6c77757 BP |
1572 | /* VERSION 2.03 CHANGE: STRETCH OUT ADC START PULSE. */ |
1573 | *pRPS++ = RPS_LDREG | (P_GPIO >> 2); /* End ADC Start pulse. */ | |
11e865c1 GP |
1574 | *pRPS++ = GPIO_BASE | GPIO1_HI; |
1575 | ||
b6c77757 BP |
1576 | /* Wait for the data from the last conversion of interest to arrive |
1577 | * in FB BUFFER 1 register. | |
1578 | */ | |
1579 | *pRPS++ = RPS_PAUSE | RPS_GPIO2; /* Wait for ADC done. */ | |
11e865c1 | 1580 | |
b6c77757 BP |
1581 | /* Transfer final ADC data from FB BUFFER 1 register to DMA buffer. */ |
1582 | *pRPS++ = RPS_STREG | (BUGFIX_STREG(P_FB_BUFFER1) >> 2); /* */ | |
11e865c1 | 1583 | *pRPS++ = |
0a85b6f0 | 1584 | (uint32_t) devpriv->ANABuf.PhysicalBase + (devpriv->AdcItems << 2); |
11e865c1 | 1585 | |
b6c77757 BP |
1586 | /* Indicate ADC scan loop is finished. */ |
1587 | /* *pRPS++= RPS_CLRSIGNAL | RPS_SIGADC ; // Signal ReadADC() that scan is done. */ | |
11e865c1 | 1588 | |
b6c77757 | 1589 | /* invoke interrupt */ |
11e865c1 GP |
1590 | if (devpriv->ai_cmd_running == 1) { |
1591 | DEBUG("ResetADC: insert irq in ADC RPS task\n"); | |
1592 | *pRPS++ = RPS_IRQ; | |
1593 | } | |
b6c77757 BP |
1594 | /* Restart RPS program at its beginning. */ |
1595 | *pRPS++ = RPS_JUMP; /* Branch to start of RPS program. */ | |
11e865c1 GP |
1596 | *pRPS++ = (uint32_t) devpriv->RPSBuf.PhysicalBase; |
1597 | ||
b6c77757 | 1598 | /* End of RPS program build */ |
11e865c1 GP |
1599 | } |
1600 | ||
1601 | /* TO COMPLETE, IF NECESSARY */ | |
0a85b6f0 MT |
1602 | static int s626_ai_insn_config(struct comedi_device *dev, |
1603 | struct comedi_subdevice *s, | |
1604 | struct comedi_insn *insn, unsigned int *data) | |
11e865c1 GP |
1605 | { |
1606 | ||
1607 | return -EINVAL; | |
1608 | } | |
1609 | ||
90035c08 | 1610 | /* static int s626_ai_rinsn(struct comedi_device *dev,struct comedi_subdevice *s,struct comedi_insn *insn,unsigned int *data) */ |
11e865c1 GP |
1611 | /* { */ |
1612 | /* register uint8_t i; */ | |
1613 | /* register int32_t *readaddr; */ | |
1614 | ||
daca497d | 1615 | /* DEBUG("as626_ai_rinsn: ai_rinsn enter\n"); */ |
11e865c1 | 1616 | |
b6c77757 | 1617 | /* Trigger ADC scan loop start by setting RPS Signal 0. */ |
11e865c1 GP |
1618 | /* MC_ENABLE( P_MC2, MC2_ADC_RPS ); */ |
1619 | ||
b6c77757 | 1620 | /* Wait until ADC scan loop is finished (RPS Signal 0 reset). */ |
11e865c1 GP |
1621 | /* while ( MC_TEST( P_MC2, MC2_ADC_RPS ) ); */ |
1622 | ||
b6c77757 BP |
1623 | /* Init ptr to DMA buffer that holds new ADC data. We skip the |
1624 | * first uint16_t in the buffer because it contains junk data from | |
1625 | * the final ADC of the previous poll list scan. | |
1626 | */ | |
11e865c1 GP |
1627 | /* readaddr = (uint32_t *)devpriv->ANABuf.LogicalBase + 1; */ |
1628 | ||
b6c77757 | 1629 | /* Convert ADC data to 16-bit integer values and copy to application buffer. */ |
11e865c1 GP |
1630 | /* for ( i = 0; i < devpriv->AdcItems; i++ ) { */ |
1631 | /* *data = s626_ai_reg_to_uint( *readaddr++ ); */ | |
daca497d | 1632 | /* DEBUG("s626_ai_rinsn: data %d\n",*data); */ |
11e865c1 GP |
1633 | /* data++; */ |
1634 | /* } */ | |
1635 | ||
daca497d | 1636 | /* DEBUG("s626_ai_rinsn: ai_rinsn escape\n"); */ |
11e865c1 GP |
1637 | /* return i; */ |
1638 | /* } */ | |
1639 | ||
0a85b6f0 MT |
1640 | static int s626_ai_insn_read(struct comedi_device *dev, |
1641 | struct comedi_subdevice *s, | |
1642 | struct comedi_insn *insn, unsigned int *data) | |
11e865c1 GP |
1643 | { |
1644 | uint16_t chan = CR_CHAN(insn->chanspec); | |
1645 | uint16_t range = CR_RANGE(insn->chanspec); | |
1646 | uint16_t AdcSpec = 0; | |
1647 | uint32_t GpioImage; | |
1648 | int n; | |
1649 | ||
0a85b6f0 | 1650 | /* interrupt call test */ |
b6c77757 BP |
1651 | /* writel(IRQ_GPIO3,devpriv->base_addr+P_PSR); */ |
1652 | /* Writing a logical 1 into any of the RPS_PSR bits causes the | |
1653 | * corresponding interrupt to be generated if enabled | |
1654 | */ | |
11e865c1 GP |
1655 | |
1656 | DEBUG("s626_ai_insn_read: entering\n"); | |
1657 | ||
b6c77757 BP |
1658 | /* Convert application's ADC specification into form |
1659 | * appropriate for register programming. | |
1660 | */ | |
11e865c1 GP |
1661 | if (range == 0) |
1662 | AdcSpec = (chan << 8) | (GSEL_BIPOLAR5V); | |
1663 | else | |
1664 | AdcSpec = (chan << 8) | (GSEL_BIPOLAR10V); | |
1665 | ||
b6c77757 BP |
1666 | /* Switch ADC analog gain. */ |
1667 | DEBIwrite(dev, LP_GSEL, AdcSpec); /* Set gain. */ | |
11e865c1 | 1668 | |
b6c77757 BP |
1669 | /* Select ADC analog input channel. */ |
1670 | DEBIwrite(dev, LP_ISEL, AdcSpec); /* Select channel. */ | |
11e865c1 GP |
1671 | |
1672 | for (n = 0; n < insn->n; n++) { | |
1673 | ||
b6c77757 | 1674 | /* Delay 10 microseconds for analog input settling. */ |
5f74ea14 | 1675 | udelay(10); |
11e865c1 | 1676 | |
b6c77757 | 1677 | /* Start ADC by pulsing GPIO1 low. */ |
11e865c1 | 1678 | GpioImage = RR7146(P_GPIO); |
b6c77757 | 1679 | /* Assert ADC Start command */ |
11e865c1 | 1680 | WR7146(P_GPIO, GpioImage & ~GPIO1_HI); |
b6c77757 | 1681 | /* and stretch it out. */ |
11e865c1 GP |
1682 | WR7146(P_GPIO, GpioImage & ~GPIO1_HI); |
1683 | WR7146(P_GPIO, GpioImage & ~GPIO1_HI); | |
b6c77757 | 1684 | /* Negate ADC Start command. */ |
11e865c1 GP |
1685 | WR7146(P_GPIO, GpioImage | GPIO1_HI); |
1686 | ||
b6c77757 BP |
1687 | /* Wait for ADC to complete (GPIO2 is asserted high when */ |
1688 | /* ADC not busy) and for data from previous conversion to */ | |
1689 | /* shift into FB BUFFER 1 register. */ | |
11e865c1 | 1690 | |
b6c77757 | 1691 | /* Wait for ADC done. */ |
add74595 | 1692 | while (!(RR7146(P_PSR) & PSR_GPIO2)) |
ae6eb75c | 1693 | ; |
11e865c1 | 1694 | |
b6c77757 | 1695 | /* Fetch ADC data. */ |
11e865c1 GP |
1696 | if (n != 0) |
1697 | data[n - 1] = s626_ai_reg_to_uint(RR7146(P_FB_BUFFER1)); | |
1698 | ||
b6c77757 BP |
1699 | /* Allow the ADC to stabilize for 4 microseconds before |
1700 | * starting the next (final) conversion. This delay is | |
1701 | * necessary to allow sufficient time between last | |
1702 | * conversion finished and the start of the next | |
1703 | * conversion. Without this delay, the last conversion's | |
1704 | * data value is sometimes set to the previous | |
1705 | * conversion's data value. | |
1706 | */ | |
5f74ea14 | 1707 | udelay(4); |
11e865c1 GP |
1708 | } |
1709 | ||
b6c77757 BP |
1710 | /* Start a dummy conversion to cause the data from the |
1711 | * previous conversion to be shifted in. */ | |
11e865c1 GP |
1712 | GpioImage = RR7146(P_GPIO); |
1713 | ||
b6c77757 | 1714 | /* Assert ADC Start command */ |
11e865c1 | 1715 | WR7146(P_GPIO, GpioImage & ~GPIO1_HI); |
b6c77757 | 1716 | /* and stretch it out. */ |
11e865c1 GP |
1717 | WR7146(P_GPIO, GpioImage & ~GPIO1_HI); |
1718 | WR7146(P_GPIO, GpioImage & ~GPIO1_HI); | |
b6c77757 | 1719 | /* Negate ADC Start command. */ |
11e865c1 GP |
1720 | WR7146(P_GPIO, GpioImage | GPIO1_HI); |
1721 | ||
b6c77757 | 1722 | /* Wait for the data to arrive in FB BUFFER 1 register. */ |
11e865c1 | 1723 | |
b6c77757 | 1724 | /* Wait for ADC done. */ |
add74595 | 1725 | while (!(RR7146(P_PSR) & PSR_GPIO2)) |
ae6eb75c | 1726 | ; |
11e865c1 | 1727 | |
b6c77757 | 1728 | /* Fetch ADC data from audio interface's input shift register. */ |
11e865c1 | 1729 | |
b6c77757 | 1730 | /* Fetch ADC data. */ |
11e865c1 GP |
1731 | if (n != 0) |
1732 | data[n - 1] = s626_ai_reg_to_uint(RR7146(P_FB_BUFFER1)); | |
1733 | ||
1734 | DEBUG("s626_ai_insn_read: samples %d, data %d\n", n, data[n - 1]); | |
1735 | ||
1736 | return n; | |
1737 | } | |
1738 | ||
add74595 | 1739 | static int s626_ai_load_polllist(uint8_t *ppl, struct comedi_cmd *cmd) |
11e865c1 GP |
1740 | { |
1741 | ||
1742 | int n; | |
1743 | ||
1744 | for (n = 0; n < cmd->chanlist_len; n++) { | |
1745 | if (CR_RANGE((cmd->chanlist)[n]) == 0) | |
1746 | ppl[n] = (CR_CHAN((cmd->chanlist)[n])) | (RANGE_5V); | |
1747 | else | |
1748 | ppl[n] = (CR_CHAN((cmd->chanlist)[n])) | (RANGE_10V); | |
1749 | } | |
4ff863b1 RK |
1750 | if (n != 0) |
1751 | ppl[n - 1] |= EOPL; | |
11e865c1 GP |
1752 | |
1753 | return n; | |
1754 | } | |
1755 | ||
0a85b6f0 MT |
1756 | static int s626_ai_inttrig(struct comedi_device *dev, |
1757 | struct comedi_subdevice *s, unsigned int trignum) | |
11e865c1 GP |
1758 | { |
1759 | if (trignum != 0) | |
1760 | return -EINVAL; | |
1761 | ||
1762 | DEBUG("s626_ai_inttrig: trigger adc start..."); | |
1763 | ||
b6c77757 | 1764 | /* Start executing the RPS program. */ |
11e865c1 GP |
1765 | MC_ENABLE(P_MC1, MC1_ERPS1); |
1766 | ||
1767 | s->async->inttrig = NULL; | |
1768 | ||
1769 | DEBUG(" done\n"); | |
1770 | ||
1771 | return 1; | |
1772 | } | |
1773 | ||
1774 | /* TO COMPLETE */ | |
34c43922 | 1775 | static int s626_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) |
11e865c1 GP |
1776 | { |
1777 | ||
1778 | uint8_t ppl[16]; | |
ea6d0d4c | 1779 | struct comedi_cmd *cmd = &s->async->cmd; |
eb5e029e | 1780 | struct enc_private *k; |
11e865c1 GP |
1781 | int tick; |
1782 | ||
1783 | DEBUG("s626_ai_cmd: entering command function\n"); | |
1784 | ||
1785 | if (devpriv->ai_cmd_running) { | |
daca497d | 1786 | printk(KERN_ERR "s626_ai_cmd: Another ai_cmd is running %d\n", |
0a85b6f0 | 1787 | dev->minor); |
11e865c1 GP |
1788 | return -EBUSY; |
1789 | } | |
b6c77757 | 1790 | /* disable interrupt */ |
11e865c1 GP |
1791 | writel(0, devpriv->base_addr + P_IER); |
1792 | ||
b6c77757 | 1793 | /* clear interrupt request */ |
11e865c1 GP |
1794 | writel(IRQ_RPS1 | IRQ_GPIO3, devpriv->base_addr + P_ISR); |
1795 | ||
b6c77757 | 1796 | /* clear any pending interrupt */ |
11e865c1 | 1797 | s626_dio_clear_irq(dev); |
b6c77757 | 1798 | /* s626_enc_clear_irq(dev); */ |
11e865c1 | 1799 | |
b6c77757 | 1800 | /* reset ai_cmd_running flag */ |
11e865c1 GP |
1801 | devpriv->ai_cmd_running = 0; |
1802 | ||
b6c77757 | 1803 | /* test if cmd is valid */ |
11e865c1 GP |
1804 | if (cmd == NULL) { |
1805 | DEBUG("s626_ai_cmd: NULL command\n"); | |
1806 | return -EINVAL; | |
1807 | } else { | |
1808 | DEBUG("s626_ai_cmd: command recieved!!!\n"); | |
1809 | } | |
1810 | ||
1811 | if (dev->irq == 0) { | |
1812 | comedi_error(dev, | |
0a85b6f0 | 1813 | "s626_ai_cmd: cannot run command without an irq"); |
11e865c1 GP |
1814 | return -EIO; |
1815 | } | |
1816 | ||
1817 | s626_ai_load_polllist(ppl, cmd); | |
1818 | devpriv->ai_cmd_running = 1; | |
1819 | devpriv->ai_convert_count = 0; | |
1820 | ||
1821 | switch (cmd->scan_begin_src) { | |
1822 | case TRIG_FOLLOW: | |
1823 | break; | |
1824 | case TRIG_TIMER: | |
b6c77757 | 1825 | /* set a conter to generate adc trigger at scan_begin_arg interval */ |
11e865c1 GP |
1826 | k = &encpriv[5]; |
1827 | tick = s626_ns_to_timer((int *)&cmd->scan_begin_arg, | |
0a85b6f0 | 1828 | cmd->flags & TRIG_ROUND_MASK); |
11e865c1 | 1829 | |
b6c77757 | 1830 | /* load timer value and enable interrupt */ |
11e865c1 GP |
1831 | s626_timer_load(dev, k, tick); |
1832 | k->SetEnable(dev, k, CLKENAB_ALWAYS); | |
1833 | ||
1834 | DEBUG("s626_ai_cmd: scan trigger timer is set with value %d\n", | |
0a85b6f0 | 1835 | tick); |
11e865c1 GP |
1836 | |
1837 | break; | |
1838 | case TRIG_EXT: | |
b6c77757 | 1839 | /* set the digital line and interrupt for scan trigger */ |
11e865c1 GP |
1840 | if (cmd->start_src != TRIG_EXT) |
1841 | s626_dio_set_irq(dev, cmd->scan_begin_arg); | |
1842 | ||
1843 | DEBUG("s626_ai_cmd: External scan trigger is set!!!\n"); | |
1844 | ||
1845 | break; | |
1846 | } | |
1847 | ||
1848 | switch (cmd->convert_src) { | |
1849 | case TRIG_NOW: | |
1850 | break; | |
1851 | case TRIG_TIMER: | |
b6c77757 | 1852 | /* set a conter to generate adc trigger at convert_arg interval */ |
11e865c1 GP |
1853 | k = &encpriv[4]; |
1854 | tick = s626_ns_to_timer((int *)&cmd->convert_arg, | |
0a85b6f0 | 1855 | cmd->flags & TRIG_ROUND_MASK); |
11e865c1 | 1856 | |
b6c77757 | 1857 | /* load timer value and enable interrupt */ |
11e865c1 GP |
1858 | s626_timer_load(dev, k, tick); |
1859 | k->SetEnable(dev, k, CLKENAB_INDEX); | |
1860 | ||
0a85b6f0 MT |
1861 | DEBUG |
1862 | ("s626_ai_cmd: convert trigger timer is set with value %d\n", | |
1863 | tick); | |
11e865c1 GP |
1864 | break; |
1865 | case TRIG_EXT: | |
b6c77757 | 1866 | /* set the digital line and interrupt for convert trigger */ |
11e865c1 | 1867 | if (cmd->scan_begin_src != TRIG_EXT |
0a85b6f0 | 1868 | && cmd->start_src == TRIG_EXT) |
11e865c1 GP |
1869 | s626_dio_set_irq(dev, cmd->convert_arg); |
1870 | ||
1871 | DEBUG("s626_ai_cmd: External convert trigger is set!!!\n"); | |
1872 | ||
1873 | break; | |
1874 | } | |
1875 | ||
1876 | switch (cmd->stop_src) { | |
1877 | case TRIG_COUNT: | |
b6c77757 | 1878 | /* data arrives as one packet */ |
11e865c1 GP |
1879 | devpriv->ai_sample_count = cmd->stop_arg; |
1880 | devpriv->ai_continous = 0; | |
1881 | break; | |
1882 | case TRIG_NONE: | |
b6c77757 | 1883 | /* continous aquisition */ |
11e865c1 GP |
1884 | devpriv->ai_continous = 1; |
1885 | devpriv->ai_sample_count = 0; | |
1886 | break; | |
1887 | } | |
1888 | ||
1889 | ResetADC(dev, ppl); | |
1890 | ||
1891 | switch (cmd->start_src) { | |
1892 | case TRIG_NOW: | |
b6c77757 BP |
1893 | /* Trigger ADC scan loop start by setting RPS Signal 0. */ |
1894 | /* MC_ENABLE( P_MC2, MC2_ADC_RPS ); */ | |
11e865c1 | 1895 | |
b6c77757 | 1896 | /* Start executing the RPS program. */ |
11e865c1 GP |
1897 | MC_ENABLE(P_MC1, MC1_ERPS1); |
1898 | ||
1899 | DEBUG("s626_ai_cmd: ADC triggered\n"); | |
1900 | s->async->inttrig = NULL; | |
1901 | break; | |
1902 | case TRIG_EXT: | |
b6c77757 | 1903 | /* configure DIO channel for acquisition trigger */ |
11e865c1 GP |
1904 | s626_dio_set_irq(dev, cmd->start_arg); |
1905 | ||
1906 | DEBUG("s626_ai_cmd: External start trigger is set!!!\n"); | |
1907 | ||
1908 | s->async->inttrig = NULL; | |
1909 | break; | |
1910 | case TRIG_INT: | |
1911 | s->async->inttrig = s626_ai_inttrig; | |
1912 | break; | |
1913 | } | |
1914 | ||
b6c77757 | 1915 | /* enable interrupt */ |
11e865c1 GP |
1916 | writel(IRQ_GPIO3 | IRQ_RPS1, devpriv->base_addr + P_IER); |
1917 | ||
1918 | DEBUG("s626_ai_cmd: command function terminated\n"); | |
1919 | ||
1920 | return 0; | |
1921 | } | |
1922 | ||
0a85b6f0 MT |
1923 | static int s626_ai_cmdtest(struct comedi_device *dev, |
1924 | struct comedi_subdevice *s, struct comedi_cmd *cmd) | |
11e865c1 GP |
1925 | { |
1926 | int err = 0; | |
1927 | int tmp; | |
1928 | ||
1929 | /* cmdtest tests a particular command to see if it is valid. Using | |
1930 | * the cmdtest ioctl, a user can create a valid cmd and then have it | |
1931 | * executes by the cmd ioctl. | |
1932 | * | |
1933 | * cmdtest returns 1,2,3,4 or 0, depending on which tests the | |
1934 | * command passes. */ | |
1935 | ||
1936 | /* step 1: make sure trigger sources are trivially valid */ | |
1937 | ||
1938 | tmp = cmd->start_src; | |
1939 | cmd->start_src &= TRIG_NOW | TRIG_INT | TRIG_EXT; | |
1940 | if (!cmd->start_src || tmp != cmd->start_src) | |
1941 | err++; | |
1942 | ||
1943 | tmp = cmd->scan_begin_src; | |
1944 | cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT | TRIG_FOLLOW; | |
1945 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
1946 | err++; | |
1947 | ||
1948 | tmp = cmd->convert_src; | |
1949 | cmd->convert_src &= TRIG_TIMER | TRIG_EXT | TRIG_NOW; | |
1950 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
1951 | err++; | |
1952 | ||
1953 | tmp = cmd->scan_end_src; | |
1954 | cmd->scan_end_src &= TRIG_COUNT; | |
1955 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
1956 | err++; | |
1957 | ||
1958 | tmp = cmd->stop_src; | |
1959 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; | |
1960 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
1961 | err++; | |
1962 | ||
1963 | if (err) | |
1964 | return 1; | |
1965 | ||
1966 | /* step 2: make sure trigger sources are unique and mutually | |
1967 | compatible */ | |
1968 | ||
828684f9 | 1969 | /* note that mutual compatibility is not an issue here */ |
11e865c1 | 1970 | if (cmd->scan_begin_src != TRIG_TIMER && |
0a85b6f0 MT |
1971 | cmd->scan_begin_src != TRIG_EXT |
1972 | && cmd->scan_begin_src != TRIG_FOLLOW) | |
11e865c1 GP |
1973 | err++; |
1974 | if (cmd->convert_src != TRIG_TIMER && | |
0a85b6f0 | 1975 | cmd->convert_src != TRIG_EXT && cmd->convert_src != TRIG_NOW) |
11e865c1 GP |
1976 | err++; |
1977 | if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) | |
1978 | err++; | |
1979 | ||
1980 | if (err) | |
1981 | return 2; | |
1982 | ||
1983 | /* step 3: make sure arguments are trivially compatible */ | |
1984 | ||
1985 | if (cmd->start_src != TRIG_EXT && cmd->start_arg != 0) { | |
1986 | cmd->start_arg = 0; | |
1987 | err++; | |
1988 | } | |
1989 | ||
11e865c1 GP |
1990 | if (cmd->start_src == TRIG_EXT && cmd->start_arg > 39) { |
1991 | cmd->start_arg = 39; | |
1992 | err++; | |
1993 | } | |
1994 | ||
11e865c1 GP |
1995 | if (cmd->scan_begin_src == TRIG_EXT && cmd->scan_begin_arg > 39) { |
1996 | cmd->scan_begin_arg = 39; | |
1997 | err++; | |
1998 | } | |
1999 | ||
11e865c1 GP |
2000 | if (cmd->convert_src == TRIG_EXT && cmd->convert_arg > 39) { |
2001 | cmd->convert_arg = 39; | |
2002 | err++; | |
2003 | } | |
2004 | #define MAX_SPEED 200000 /* in nanoseconds */ | |
2005 | #define MIN_SPEED 2000000000 /* in nanoseconds */ | |
2006 | ||
2007 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
2008 | if (cmd->scan_begin_arg < MAX_SPEED) { | |
2009 | cmd->scan_begin_arg = MAX_SPEED; | |
2010 | err++; | |
2011 | } | |
2012 | if (cmd->scan_begin_arg > MIN_SPEED) { | |
2013 | cmd->scan_begin_arg = MIN_SPEED; | |
2014 | err++; | |
2015 | } | |
2016 | } else { | |
2017 | /* external trigger */ | |
2018 | /* should be level/edge, hi/lo specification here */ | |
2019 | /* should specify multiple external triggers */ | |
2020 | /* if(cmd->scan_begin_arg>9){ */ | |
2021 | /* cmd->scan_begin_arg=9; */ | |
2022 | /* err++; */ | |
2023 | /* } */ | |
2024 | } | |
2025 | if (cmd->convert_src == TRIG_TIMER) { | |
2026 | if (cmd->convert_arg < MAX_SPEED) { | |
2027 | cmd->convert_arg = MAX_SPEED; | |
2028 | err++; | |
2029 | } | |
2030 | if (cmd->convert_arg > MIN_SPEED) { | |
2031 | cmd->convert_arg = MIN_SPEED; | |
2032 | err++; | |
2033 | } | |
2034 | } else { | |
2035 | /* external trigger */ | |
2036 | /* see above */ | |
2037 | /* if(cmd->convert_arg>9){ */ | |
2038 | /* cmd->convert_arg=9; */ | |
2039 | /* err++; */ | |
2040 | /* } */ | |
2041 | } | |
2042 | ||
2043 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
2044 | cmd->scan_end_arg = cmd->chanlist_len; | |
2045 | err++; | |
2046 | } | |
2047 | if (cmd->stop_src == TRIG_COUNT) { | |
2048 | if (cmd->stop_arg > 0x00ffffff) { | |
2049 | cmd->stop_arg = 0x00ffffff; | |
2050 | err++; | |
2051 | } | |
2052 | } else { | |
2053 | /* TRIG_NONE */ | |
2054 | if (cmd->stop_arg != 0) { | |
2055 | cmd->stop_arg = 0; | |
2056 | err++; | |
2057 | } | |
2058 | } | |
2059 | ||
2060 | if (err) | |
2061 | return 3; | |
2062 | ||
2063 | /* step 4: fix up any arguments */ | |
2064 | ||
2065 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
2066 | tmp = cmd->scan_begin_arg; | |
2067 | s626_ns_to_timer((int *)&cmd->scan_begin_arg, | |
0a85b6f0 | 2068 | cmd->flags & TRIG_ROUND_MASK); |
11e865c1 GP |
2069 | if (tmp != cmd->scan_begin_arg) |
2070 | err++; | |
2071 | } | |
2072 | if (cmd->convert_src == TRIG_TIMER) { | |
2073 | tmp = cmd->convert_arg; | |
2074 | s626_ns_to_timer((int *)&cmd->convert_arg, | |
0a85b6f0 | 2075 | cmd->flags & TRIG_ROUND_MASK); |
11e865c1 GP |
2076 | if (tmp != cmd->convert_arg) |
2077 | err++; | |
2078 | if (cmd->scan_begin_src == TRIG_TIMER && | |
0a85b6f0 MT |
2079 | cmd->scan_begin_arg < |
2080 | cmd->convert_arg * cmd->scan_end_arg) { | |
11e865c1 | 2081 | cmd->scan_begin_arg = |
0a85b6f0 | 2082 | cmd->convert_arg * cmd->scan_end_arg; |
11e865c1 GP |
2083 | err++; |
2084 | } | |
2085 | } | |
2086 | ||
2087 | if (err) | |
2088 | return 4; | |
2089 | ||
2090 | return 0; | |
2091 | } | |
2092 | ||
34c43922 | 2093 | static int s626_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s) |
11e865c1 | 2094 | { |
b6c77757 | 2095 | /* Stop RPS program in case it is currently running. */ |
11e865c1 GP |
2096 | MC_DISABLE(P_MC1, MC1_ERPS1); |
2097 | ||
b6c77757 | 2098 | /* disable master interrupt */ |
11e865c1 GP |
2099 | writel(0, devpriv->base_addr + P_IER); |
2100 | ||
2101 | devpriv->ai_cmd_running = 0; | |
2102 | ||
2103 | return 0; | |
2104 | } | |
2105 | ||
2106 | /* This function doesn't require a particular form, this is just what | |
2107 | * happens to be used in some of the drivers. It should convert ns | |
2108 | * nanoseconds to a counter value suitable for programming the device. | |
2109 | * Also, it should adjust ns so that it cooresponds to the actual time | |
2110 | * that the device will use. */ | |
2111 | static int s626_ns_to_timer(int *nanosec, int round_mode) | |
2112 | { | |
2113 | int divider, base; | |
2114 | ||
b6c77757 | 2115 | base = 500; /* 2MHz internal clock */ |
11e865c1 GP |
2116 | |
2117 | switch (round_mode) { | |
2118 | case TRIG_ROUND_NEAREST: | |
2119 | default: | |
2120 | divider = (*nanosec + base / 2) / base; | |
2121 | break; | |
2122 | case TRIG_ROUND_DOWN: | |
2123 | divider = (*nanosec) / base; | |
2124 | break; | |
2125 | case TRIG_ROUND_UP: | |
2126 | divider = (*nanosec + base - 1) / base; | |
2127 | break; | |
2128 | } | |
2129 | ||
2130 | *nanosec = base * divider; | |
2131 | return divider - 1; | |
2132 | } | |
2133 | ||
34c43922 | 2134 | static int s626_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 2135 | struct comedi_insn *insn, unsigned int *data) |
11e865c1 GP |
2136 | { |
2137 | ||
2138 | int i; | |
2139 | uint16_t chan = CR_CHAN(insn->chanspec); | |
2140 | int16_t dacdata; | |
2141 | ||
2142 | for (i = 0; i < insn->n; i++) { | |
2143 | dacdata = (int16_t) data[i]; | |
2144 | devpriv->ao_readback[CR_CHAN(insn->chanspec)] = data[i]; | |
2145 | dacdata -= (0x1fff); | |
2146 | ||
2147 | SetDAC(dev, chan, dacdata); | |
2148 | } | |
2149 | ||
2150 | return i; | |
2151 | } | |
2152 | ||
34c43922 | 2153 | static int s626_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s, |
0a85b6f0 | 2154 | struct comedi_insn *insn, unsigned int *data) |
11e865c1 GP |
2155 | { |
2156 | int i; | |
2157 | ||
82675f35 | 2158 | for (i = 0; i < insn->n; i++) |
11e865c1 | 2159 | data[i] = devpriv->ao_readback[CR_CHAN(insn->chanspec)]; |
11e865c1 GP |
2160 | |
2161 | return i; | |
2162 | } | |
2163 | ||
b6c77757 BP |
2164 | /* *************** DIGITAL I/O FUNCTIONS *************** |
2165 | * All DIO functions address a group of DIO channels by means of | |
2166 | * "group" argument. group may be 0, 1 or 2, which correspond to DIO | |
2167 | * ports A, B and C, respectively. | |
2168 | */ | |
11e865c1 | 2169 | |
71b5f4f1 | 2170 | static void s626_dio_init(struct comedi_device *dev) |
11e865c1 GP |
2171 | { |
2172 | uint16_t group; | |
34c43922 | 2173 | struct comedi_subdevice *s; |
11e865c1 | 2174 | |
b6c77757 | 2175 | /* Prepare to treat writes to WRCapSel as capture disables. */ |
11e865c1 GP |
2176 | DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP); |
2177 | ||
b6c77757 | 2178 | /* For each group of sixteen channels ... */ |
11e865c1 GP |
2179 | for (group = 0; group < S626_DIO_BANKS; group++) { |
2180 | s = dev->subdevices + 2 + group; | |
b6c77757 BP |
2181 | DEBIwrite(dev, diopriv->WRIntSel, 0); /* Disable all interrupts. */ |
2182 | DEBIwrite(dev, diopriv->WRCapSel, 0xFFFF); /* Disable all event */ | |
2183 | /* captures. */ | |
2184 | DEBIwrite(dev, diopriv->WREdgSel, 0); /* Init all DIOs to */ | |
2185 | /* default edge */ | |
2186 | /* polarity. */ | |
2187 | DEBIwrite(dev, diopriv->WRDOut, 0); /* Program all outputs */ | |
2188 | /* to inactive state. */ | |
11e865c1 | 2189 | } |
daca497d | 2190 | DEBUG("s626_dio_init: DIO initialized\n"); |
11e865c1 GP |
2191 | } |
2192 | ||
2193 | /* DIO devices are slightly special. Although it is possible to | |
2194 | * implement the insn_read/insn_write interface, it is much more | |
2195 | * useful to applications if you implement the insn_bits interface. | |
2196 | * This allows packed reading/writing of the DIO channels. The comedi | |
2197 | * core can convert between insn_bits and insn_read/write */ | |
2198 | ||
0a85b6f0 MT |
2199 | static int s626_dio_insn_bits(struct comedi_device *dev, |
2200 | struct comedi_subdevice *s, | |
2201 | struct comedi_insn *insn, unsigned int *data) | |
11e865c1 GP |
2202 | { |
2203 | ||
2204 | /* Length of data must be 2 (mask and new data, see below) */ | |
82675f35 | 2205 | if (insn->n == 0) |
11e865c1 | 2206 | return 0; |
82675f35 | 2207 | |
11e865c1 | 2208 | if (insn->n != 2) { |
0a85b6f0 MT |
2209 | printk |
2210 | ("comedi%d: s626: s626_dio_insn_bits(): Invalid instruction length\n", | |
2211 | dev->minor); | |
11e865c1 GP |
2212 | return -EINVAL; |
2213 | } | |
2214 | ||
2215 | /* | |
2216 | * The insn data consists of a mask in data[0] and the new data in | |
2217 | * data[1]. The mask defines which bits we are concerning about. | |
2218 | * The new data must be anded with the mask. Each channel | |
2219 | * corresponds to a bit. | |
2220 | */ | |
2221 | if (data[0]) { | |
2222 | /* Check if requested ports are configured for output */ | |
2223 | if ((s->io_bits & data[0]) != data[0]) | |
2224 | return -EIO; | |
2225 | ||
2226 | s->state &= ~data[0]; | |
2227 | s->state |= data[0] & data[1]; | |
2228 | ||
2229 | /* Write out the new digital output lines */ | |
2230 | ||
2231 | DEBIwrite(dev, diopriv->WRDOut, s->state); | |
2232 | } | |
2233 | data[1] = DEBIread(dev, diopriv->RDDIn); | |
2234 | ||
2235 | return 2; | |
2236 | } | |
2237 | ||
0a85b6f0 MT |
2238 | static int s626_dio_insn_config(struct comedi_device *dev, |
2239 | struct comedi_subdevice *s, | |
2240 | struct comedi_insn *insn, unsigned int *data) | |
11e865c1 GP |
2241 | { |
2242 | ||
2243 | switch (data[0]) { | |
2244 | case INSN_CONFIG_DIO_QUERY: | |
2245 | data[1] = | |
0a85b6f0 MT |
2246 | (s-> |
2247 | io_bits & (1 << CR_CHAN(insn->chanspec))) ? COMEDI_OUTPUT : | |
2248 | COMEDI_INPUT; | |
11e865c1 GP |
2249 | return insn->n; |
2250 | break; | |
2251 | case COMEDI_INPUT: | |
2252 | s->io_bits &= ~(1 << CR_CHAN(insn->chanspec)); | |
2253 | break; | |
2254 | case COMEDI_OUTPUT: | |
2255 | s->io_bits |= 1 << CR_CHAN(insn->chanspec); | |
2256 | break; | |
2257 | default: | |
2258 | return -EINVAL; | |
2259 | break; | |
2260 | } | |
2261 | DEBIwrite(dev, diopriv->WRDOut, s->io_bits); | |
2262 | ||
2263 | return 1; | |
2264 | } | |
2265 | ||
71b5f4f1 | 2266 | static int s626_dio_set_irq(struct comedi_device *dev, unsigned int chan) |
11e865c1 GP |
2267 | { |
2268 | unsigned int group; | |
2269 | unsigned int bitmask; | |
2270 | unsigned int status; | |
2271 | ||
b6c77757 | 2272 | /* select dio bank */ |
11e865c1 GP |
2273 | group = chan / 16; |
2274 | bitmask = 1 << (chan - (16 * group)); | |
2275 | DEBUG("s626_dio_set_irq: enable interrupt on dio channel %d group %d\n", | |
0a85b6f0 | 2276 | chan - (16 * group), group); |
11e865c1 | 2277 | |
b6c77757 | 2278 | /* set channel to capture positive edge */ |
11e865c1 | 2279 | status = DEBIread(dev, |
0a85b6f0 MT |
2280 | ((struct dio_private *)(dev->subdevices + 2 + |
2281 | group)->private)->RDEdgSel); | |
11e865c1 | 2282 | DEBIwrite(dev, |
0a85b6f0 MT |
2283 | ((struct dio_private *)(dev->subdevices + 2 + |
2284 | group)->private)->WREdgSel, | |
2285 | bitmask | status); | |
11e865c1 | 2286 | |
b6c77757 | 2287 | /* enable interrupt on selected channel */ |
11e865c1 | 2288 | status = DEBIread(dev, |
0a85b6f0 MT |
2289 | ((struct dio_private *)(dev->subdevices + 2 + |
2290 | group)->private)->RDIntSel); | |
11e865c1 | 2291 | DEBIwrite(dev, |
0a85b6f0 MT |
2292 | ((struct dio_private *)(dev->subdevices + 2 + |
2293 | group)->private)->WRIntSel, | |
2294 | bitmask | status); | |
11e865c1 | 2295 | |
b6c77757 | 2296 | /* enable edge capture write command */ |
11e865c1 GP |
2297 | DEBIwrite(dev, LP_MISC1, MISC1_EDCAP); |
2298 | ||
b6c77757 | 2299 | /* enable edge capture on selected channel */ |
11e865c1 | 2300 | status = DEBIread(dev, |
0a85b6f0 MT |
2301 | ((struct dio_private *)(dev->subdevices + 2 + |
2302 | group)->private)->RDCapSel); | |
11e865c1 | 2303 | DEBIwrite(dev, |
0a85b6f0 MT |
2304 | ((struct dio_private *)(dev->subdevices + 2 + |
2305 | group)->private)->WRCapSel, | |
2306 | bitmask | status); | |
11e865c1 GP |
2307 | |
2308 | return 0; | |
2309 | } | |
2310 | ||
71b5f4f1 | 2311 | static int s626_dio_reset_irq(struct comedi_device *dev, unsigned int group, |
0a85b6f0 | 2312 | unsigned int mask) |
11e865c1 | 2313 | { |
0a85b6f0 MT |
2314 | DEBUG |
2315 | ("s626_dio_reset_irq: disable interrupt on dio channel %d group %d\n", | |
2316 | mask, group); | |
11e865c1 | 2317 | |
b6c77757 | 2318 | /* disable edge capture write command */ |
11e865c1 GP |
2319 | DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP); |
2320 | ||
b6c77757 | 2321 | /* enable edge capture on selected channel */ |
11e865c1 | 2322 | DEBIwrite(dev, |
0a85b6f0 MT |
2323 | ((struct dio_private *)(dev->subdevices + 2 + |
2324 | group)->private)->WRCapSel, mask); | |
11e865c1 GP |
2325 | |
2326 | return 0; | |
2327 | } | |
2328 | ||
71b5f4f1 | 2329 | static int s626_dio_clear_irq(struct comedi_device *dev) |
11e865c1 GP |
2330 | { |
2331 | unsigned int group; | |
2332 | ||
b6c77757 | 2333 | /* disable edge capture write command */ |
11e865c1 GP |
2334 | DEBIwrite(dev, LP_MISC1, MISC1_NOEDCAP); |
2335 | ||
2336 | for (group = 0; group < S626_DIO_BANKS; group++) { | |
b6c77757 | 2337 | /* clear pending events and interrupt */ |
11e865c1 | 2338 | DEBIwrite(dev, |
0a85b6f0 MT |
2339 | ((struct dio_private *)(dev->subdevices + 2 + |
2340 | group)->private)->WRCapSel, | |
2341 | 0xffff); | |
11e865c1 GP |
2342 | } |
2343 | ||
2344 | return 0; | |
2345 | } | |
2346 | ||
2347 | /* Now this function initializes the value of the counter (data[0]) | |
2348 | and set the subdevice. To complete with trigger and interrupt | |
2349 | configuration */ | |
0a85b6f0 MT |
2350 | static int s626_enc_insn_config(struct comedi_device *dev, |
2351 | struct comedi_subdevice *s, | |
2352 | struct comedi_insn *insn, unsigned int *data) | |
11e865c1 | 2353 | { |
b6c77757 | 2354 | uint16_t Setup = (LOADSRC_INDX << BF_LOADSRC) | /* Preload upon */ |
0a85b6f0 MT |
2355 | /* index. */ |
2356 | (INDXSRC_SOFT << BF_INDXSRC) | /* Disable hardware index. */ | |
2357 | (CLKSRC_COUNTER << BF_CLKSRC) | /* Operating mode is Counter. */ | |
2358 | (CLKPOL_POS << BF_CLKPOL) | /* Active high clock. */ | |
2359 | /* ( CNTDIR_UP << BF_CLKPOL ) | // Count direction is Down. */ | |
2360 | (CLKMULT_1X << BF_CLKMULT) | /* Clock multiplier is 1x. */ | |
2361 | (CLKENAB_INDEX << BF_CLKENAB); | |
11e865c1 | 2362 | /* uint16_t DisableIntSrc=TRUE; */ |
b6c77757 | 2363 | /* uint32_t Preloadvalue; //Counter initial value */ |
11e865c1 GP |
2364 | uint16_t valueSrclatch = LATCHSRC_AB_READ; |
2365 | uint16_t enab = CLKENAB_ALWAYS; | |
eb5e029e | 2366 | struct enc_private *k = &encpriv[CR_CHAN(insn->chanspec)]; |
11e865c1 GP |
2367 | |
2368 | DEBUG("s626_enc_insn_config: encoder config\n"); | |
2369 | ||
b6c77757 | 2370 | /* (data==NULL) ? (Preloadvalue=0) : (Preloadvalue=data[0]); */ |
11e865c1 GP |
2371 | |
2372 | k->SetMode(dev, k, Setup, TRUE); | |
2373 | Preload(dev, k, *(insn->data)); | |
2374 | k->PulseIndex(dev, k); | |
2375 | SetLatchSource(dev, k, valueSrclatch); | |
2376 | k->SetEnable(dev, k, (uint16_t) (enab != 0)); | |
2377 | ||
2378 | return insn->n; | |
2379 | } | |
2380 | ||
0a85b6f0 MT |
2381 | static int s626_enc_insn_read(struct comedi_device *dev, |
2382 | struct comedi_subdevice *s, | |
2383 | struct comedi_insn *insn, unsigned int *data) | |
11e865c1 GP |
2384 | { |
2385 | ||
2386 | int n; | |
eb5e029e | 2387 | struct enc_private *k = &encpriv[CR_CHAN(insn->chanspec)]; |
11e865c1 | 2388 | |
daca497d | 2389 | DEBUG("s626_enc_insn_read: encoder read channel %d\n", |
0a85b6f0 | 2390 | CR_CHAN(insn->chanspec)); |
11e865c1 GP |
2391 | |
2392 | for (n = 0; n < insn->n; n++) | |
2393 | data[n] = ReadLatch(dev, k); | |
2394 | ||
2395 | DEBUG("s626_enc_insn_read: encoder sample %d\n", data[n]); | |
2396 | ||
2397 | return n; | |
2398 | } | |
2399 | ||
0a85b6f0 MT |
2400 | static int s626_enc_insn_write(struct comedi_device *dev, |
2401 | struct comedi_subdevice *s, | |
2402 | struct comedi_insn *insn, unsigned int *data) | |
11e865c1 GP |
2403 | { |
2404 | ||
eb5e029e | 2405 | struct enc_private *k = &encpriv[CR_CHAN(insn->chanspec)]; |
11e865c1 | 2406 | |
daca497d | 2407 | DEBUG("s626_enc_insn_write: encoder write channel %d\n", |
0a85b6f0 | 2408 | CR_CHAN(insn->chanspec)); |
11e865c1 | 2409 | |
b6c77757 | 2410 | /* Set the preload register */ |
11e865c1 GP |
2411 | Preload(dev, k, data[0]); |
2412 | ||
b6c77757 BP |
2413 | /* Software index pulse forces the preload register to load */ |
2414 | /* into the counter */ | |
11e865c1 GP |
2415 | k->SetLoadTrig(dev, k, 0); |
2416 | k->PulseIndex(dev, k); | |
2417 | k->SetLoadTrig(dev, k, 2); | |
2418 | ||
2419 | DEBUG("s626_enc_insn_write: End encoder write\n"); | |
2420 | ||
2421 | return 1; | |
2422 | } | |
2423 | ||
0a85b6f0 MT |
2424 | static void s626_timer_load(struct comedi_device *dev, struct enc_private *k, |
2425 | int tick) | |
11e865c1 | 2426 | { |
b6c77757 | 2427 | uint16_t Setup = (LOADSRC_INDX << BF_LOADSRC) | /* Preload upon */ |
0a85b6f0 MT |
2428 | /* index. */ |
2429 | (INDXSRC_SOFT << BF_INDXSRC) | /* Disable hardware index. */ | |
2430 | (CLKSRC_TIMER << BF_CLKSRC) | /* Operating mode is Timer. */ | |
2431 | (CLKPOL_POS << BF_CLKPOL) | /* Active high clock. */ | |
2432 | (CNTDIR_DOWN << BF_CLKPOL) | /* Count direction is Down. */ | |
2433 | (CLKMULT_1X << BF_CLKMULT) | /* Clock multiplier is 1x. */ | |
2434 | (CLKENAB_INDEX << BF_CLKENAB); | |
11e865c1 | 2435 | uint16_t valueSrclatch = LATCHSRC_A_INDXA; |
b6c77757 | 2436 | /* uint16_t enab=CLKENAB_ALWAYS; */ |
11e865c1 GP |
2437 | |
2438 | k->SetMode(dev, k, Setup, FALSE); | |
2439 | ||
b6c77757 | 2440 | /* Set the preload register */ |
11e865c1 GP |
2441 | Preload(dev, k, tick); |
2442 | ||
b6c77757 BP |
2443 | /* Software index pulse forces the preload register to load */ |
2444 | /* into the counter */ | |
11e865c1 GP |
2445 | k->SetLoadTrig(dev, k, 0); |
2446 | k->PulseIndex(dev, k); | |
2447 | ||
b6c77757 | 2448 | /* set reload on counter overflow */ |
11e865c1 GP |
2449 | k->SetLoadTrig(dev, k, 1); |
2450 | ||
b6c77757 | 2451 | /* set interrupt on overflow */ |
11e865c1 GP |
2452 | k->SetIntSrc(dev, k, INTSRC_OVER); |
2453 | ||
2454 | SetLatchSource(dev, k, valueSrclatch); | |
b6c77757 | 2455 | /* k->SetEnable(dev,k,(uint16_t)(enab != 0)); */ |
11e865c1 GP |
2456 | } |
2457 | ||
b6c77757 | 2458 | /* *********** DAC FUNCTIONS *********** */ |
11e865c1 | 2459 | |
b6c77757 | 2460 | /* Slot 0 base settings. */ |
6a98d36e | 2461 | #define VECT0 (XSD2 | RSD3 | SIB_A2) |
b6c77757 | 2462 | /* Slot 0 always shifts in 0xFF and store it to FB_BUFFER2. */ |
11e865c1 | 2463 | |
b6c77757 | 2464 | /* TrimDac LogicalChan-to-PhysicalChan mapping table. */ |
11e865c1 GP |
2465 | static uint8_t trimchan[] = { 10, 9, 8, 3, 2, 7, 6, 1, 0, 5, 4 }; |
2466 | ||
b6c77757 | 2467 | /* TrimDac LogicalChan-to-EepromAdrs mapping table. */ |
add74595 | 2468 | static uint8_t trimadrs[] = { 0x40, 0x41, 0x42, 0x50, 0x51, 0x52, 0x53, 0x60, 0x61, 0x62, 0x63 }; |
11e865c1 | 2469 | |
71b5f4f1 | 2470 | static void LoadTrimDACs(struct comedi_device *dev) |
11e865c1 GP |
2471 | { |
2472 | register uint8_t i; | |
2473 | ||
b6c77757 | 2474 | /* Copy TrimDac setpoint values from EEPROM to TrimDacs. */ |
8629efa4 | 2475 | for (i = 0; i < ARRAY_SIZE(trimchan); i++) |
11e865c1 GP |
2476 | WriteTrimDAC(dev, i, I2Cread(dev, trimadrs[i])); |
2477 | } | |
2478 | ||
71b5f4f1 | 2479 | static void WriteTrimDAC(struct comedi_device *dev, uint8_t LogicalChan, |
0a85b6f0 | 2480 | uint8_t DacData) |
11e865c1 GP |
2481 | { |
2482 | uint32_t chan; | |
2483 | ||
b6c77757 | 2484 | /* Save the new setpoint in case the application needs to read it back later. */ |
11e865c1 GP |
2485 | devpriv->TrimSetpoint[LogicalChan] = (uint8_t) DacData; |
2486 | ||
b6c77757 | 2487 | /* Map logical channel number to physical channel number. */ |
11e865c1 GP |
2488 | chan = (uint32_t) trimchan[LogicalChan]; |
2489 | ||
b6c77757 BP |
2490 | /* Set up TSL2 records for TrimDac write operation. All slots shift |
2491 | * 0xFF in from pulled-up SD3 so that the end of the slot sequence | |
2492 | * can be detected. | |
2493 | */ | |
2494 | ||
2495 | SETVECT(2, XSD2 | XFIFO_1 | WS3); | |
2496 | /* Slot 2: Send high uint8_t to target TrimDac. */ | |
2497 | SETVECT(3, XSD2 | XFIFO_0 | WS3); | |
2498 | /* Slot 3: Send low uint8_t to target TrimDac. */ | |
2499 | SETVECT(4, XSD2 | XFIFO_3 | WS1); | |
2500 | /* Slot 4: Send NOP high uint8_t to DAC0 to keep clock running. */ | |
2501 | SETVECT(5, XSD2 | XFIFO_2 | WS1 | EOS); | |
2502 | /* Slot 5: Send NOP low uint8_t to DAC0. */ | |
2503 | ||
2504 | /* Construct and transmit target DAC's serial packet: | |
2505 | * ( 0000 AAAA ), ( DDDD DDDD ),( 0x00 ),( 0x00 ) where A<3:0> is the | |
2506 | * DAC channel's address, and D<7:0> is the DAC setpoint. Append a | |
2507 | * WORD value (that writes a channel 0 NOP command to a non-existent | |
2508 | * main DAC channel) that serves to keep the clock running after the | |
2509 | * packet has been sent to the target DAC. | |
2510 | */ | |
11e865c1 | 2511 | |
b6c77757 BP |
2512 | /* Address the DAC channel within the trimdac device. */ |
2513 | SendDAC(dev, ((uint32_t) chan << 8) | |
2514 | | (uint32_t) DacData); /* Include DAC setpoint data. */ | |
2515 | } | |
11e865c1 | 2516 | |
b6c77757 BP |
2517 | /* ************** EEPROM ACCESS FUNCTIONS ************** */ |
2518 | /* Read uint8_t from EEPROM. */ | |
11e865c1 | 2519 | |
71b5f4f1 | 2520 | static uint8_t I2Cread(struct comedi_device *dev, uint8_t addr) |
11e865c1 GP |
2521 | { |
2522 | uint8_t rtnval; | |
2523 | ||
b6c77757 BP |
2524 | /* Send EEPROM target address. */ |
2525 | if (I2Chandshake(dev, I2C_B2(I2C_ATTRSTART, I2CW) | |
2526 | /* Byte2 = I2C command: write to I2C EEPROM device. */ | |
0a85b6f0 | 2527 | | I2C_B1(I2C_ATTRSTOP, addr) |
b6c77757 | 2528 | /* Byte1 = EEPROM internal target address. */ |
0a85b6f0 | 2529 | | I2C_B0(I2C_ATTRNOP, 0))) { /* Byte0 = Not sent. */ |
b6c77757 | 2530 | /* Abort function and declare error if handshake failed. */ |
11e865c1 GP |
2531 | DEBUG("I2Cread: error handshake I2Cread a\n"); |
2532 | return 0; | |
2533 | } | |
b6c77757 | 2534 | /* Execute EEPROM read. */ |
0a85b6f0 MT |
2535 | if (I2Chandshake(dev, I2C_B2(I2C_ATTRSTART, I2CR) |
2536 | ||
2537 | /* Byte2 = I2C */ | |
2538 | /* command: read */ | |
2539 | /* from I2C EEPROM */ | |
2540 | /* device. */ | |
2541 | |I2C_B1(I2C_ATTRSTOP, 0) | |
2542 | ||
2543 | /* Byte1 receives */ | |
2544 | /* uint8_t from */ | |
2545 | /* EEPROM. */ | |
2546 | |I2C_B0(I2C_ATTRNOP, 0))) { /* Byte0 = Not sent. */ | |
f10fe574 | 2547 | |
b6c77757 | 2548 | /* Abort function and declare error if handshake failed. */ |
11e865c1 GP |
2549 | DEBUG("I2Cread: error handshake I2Cread b\n"); |
2550 | return 0; | |
2551 | } | |
b6c77757 | 2552 | /* Return copy of EEPROM value. */ |
11e865c1 GP |
2553 | rtnval = (uint8_t) (RR7146(P_I2CCTRL) >> 16); |
2554 | return rtnval; | |
2555 | } | |
2556 | ||
71b5f4f1 | 2557 | static uint32_t I2Chandshake(struct comedi_device *dev, uint32_t val) |
11e865c1 | 2558 | { |
b6c77757 | 2559 | /* Write I2C command to I2C Transfer Control shadow register. */ |
11e865c1 GP |
2560 | WR7146(P_I2CCTRL, val); |
2561 | ||
b6c77757 BP |
2562 | /* Upload I2C shadow registers into working registers and wait for */ |
2563 | /* upload confirmation. */ | |
11e865c1 GP |
2564 | |
2565 | MC_ENABLE(P_MC2, MC2_UPLD_IIC); | |
add74595 | 2566 | while (!MC_TEST(P_MC2, MC2_UPLD_IIC)) |
ae6eb75c | 2567 | ; |
11e865c1 | 2568 | |
b6c77757 | 2569 | /* Wait until I2C bus transfer is finished or an error occurs. */ |
add74595 | 2570 | while ((RR7146(P_I2CCTRL) & (I2C_BUSY | I2C_ERR)) == I2C_BUSY) |
ae6eb75c | 2571 | ; |
11e865c1 | 2572 | |
b6c77757 | 2573 | /* Return non-zero if I2C error occured. */ |
11e865c1 GP |
2574 | return RR7146(P_I2CCTRL) & I2C_ERR; |
2575 | ||
2576 | } | |
2577 | ||
b6c77757 | 2578 | /* Private helper function: Write setpoint to an application DAC channel. */ |
11e865c1 | 2579 | |
71b5f4f1 | 2580 | static void SetDAC(struct comedi_device *dev, uint16_t chan, short dacdata) |
11e865c1 GP |
2581 | { |
2582 | register uint16_t signmask; | |
2583 | register uint32_t WSImage; | |
2584 | ||
b6c77757 BP |
2585 | /* Adjust DAC data polarity and set up Polarity Control Register */ |
2586 | /* image. */ | |
11e865c1 GP |
2587 | signmask = 1 << chan; |
2588 | if (dacdata < 0) { | |
2589 | dacdata = -dacdata; | |
2590 | devpriv->Dacpol |= signmask; | |
2591 | } else | |
2592 | devpriv->Dacpol &= ~signmask; | |
2593 | ||
b6c77757 | 2594 | /* Limit DAC setpoint value to valid range. */ |
11e865c1 GP |
2595 | if ((uint16_t) dacdata > 0x1FFF) |
2596 | dacdata = 0x1FFF; | |
2597 | ||
b6c77757 BP |
2598 | /* Set up TSL2 records (aka "vectors") for DAC update. Vectors V2 |
2599 | * and V3 transmit the setpoint to the target DAC. V4 and V5 send | |
2600 | * data to a non-existent TrimDac channel just to keep the clock | |
2601 | * running after sending data to the target DAC. This is necessary | |
2602 | * to eliminate the clock glitch that would otherwise occur at the | |
2603 | * end of the target DAC's serial data stream. When the sequence | |
2604 | * restarts at V0 (after executing V5), the gate array automatically | |
2605 | * disables gating for the DAC clock and all DAC chip selects. | |
2606 | */ | |
2607 | ||
2608 | WSImage = (chan & 2) ? WS1 : WS2; | |
2609 | /* Choose DAC chip select to be asserted. */ | |
2610 | SETVECT(2, XSD2 | XFIFO_1 | WSImage); | |
2611 | /* Slot 2: Transmit high data byte to target DAC. */ | |
2612 | SETVECT(3, XSD2 | XFIFO_0 | WSImage); | |
2613 | /* Slot 3: Transmit low data byte to target DAC. */ | |
2614 | SETVECT(4, XSD2 | XFIFO_3 | WS3); | |
2615 | /* Slot 4: Transmit to non-existent TrimDac channel to keep clock */ | |
2616 | SETVECT(5, XSD2 | XFIFO_2 | WS3 | EOS); | |
2617 | /* Slot 5: running after writing target DAC's low data byte. */ | |
2618 | ||
2619 | /* Construct and transmit target DAC's serial packet: | |
2620 | * ( A10D DDDD ),( DDDD DDDD ),( 0x0F ),( 0x00 ) where A is chan<0>, | |
2621 | * and D<12:0> is the DAC setpoint. Append a WORD value (that writes | |
2622 | * to a non-existent TrimDac channel) that serves to keep the clock | |
2623 | * running after the packet has been sent to the target DAC. | |
2624 | */ | |
2625 | SendDAC(dev, 0x0F000000 | |
2626 | /* Continue clock after target DAC data (write to non-existent trimdac). */ | |
2627 | | 0x00004000 | |
2628 | /* Address the two main dual-DAC devices (TSL's chip select enables | |
2629 | * target device). */ | |
2630 | | ((uint32_t) (chan & 1) << 15) | |
2631 | /* Address the DAC channel within the device. */ | |
2632 | | (uint32_t) dacdata); /* Include DAC setpoint data. */ | |
11e865c1 GP |
2633 | |
2634 | } | |
2635 | ||
b6c77757 BP |
2636 | /* Private helper function: Transmit serial data to DAC via Audio |
2637 | * channel 2. Assumes: (1) TSL2 slot records initialized, and (2) | |
2638 | * Dacpol contains valid target image. | |
2639 | */ | |
11e865c1 | 2640 | |
71b5f4f1 | 2641 | static void SendDAC(struct comedi_device *dev, uint32_t val) |
11e865c1 GP |
2642 | { |
2643 | ||
b6c77757 | 2644 | /* START THE SERIAL CLOCK RUNNING ------------- */ |
11e865c1 | 2645 | |
b6c77757 BP |
2646 | /* Assert DAC polarity control and enable gating of DAC serial clock |
2647 | * and audio bit stream signals. At this point in time we must be | |
2648 | * assured of being in time slot 0. If we are not in slot 0, the | |
2649 | * serial clock and audio stream signals will be disabled; this is | |
2650 | * because the following DEBIwrite statement (which enables signals | |
2651 | * to be passed through the gate array) would execute before the | |
2652 | * trailing edge of WS1/WS3 (which turns off the signals), thus | |
2653 | * causing the signals to be inactive during the DAC write. | |
2654 | */ | |
11e865c1 GP |
2655 | DEBIwrite(dev, LP_DACPOL, devpriv->Dacpol); |
2656 | ||
b6c77757 | 2657 | /* TRANSFER OUTPUT DWORD VALUE INTO A2'S OUTPUT FIFO ---------------- */ |
11e865c1 | 2658 | |
b6c77757 | 2659 | /* Copy DAC setpoint value to DAC's output DMA buffer. */ |
11e865c1 | 2660 | |
b6c77757 | 2661 | /* WR7146( (uint32_t)devpriv->pDacWBuf, val ); */ |
11e865c1 GP |
2662 | *devpriv->pDacWBuf = val; |
2663 | ||
b6c77757 BP |
2664 | /* enab the output DMA transfer. This will cause the DMAC to copy |
2665 | * the DAC's data value to A2's output FIFO. The DMA transfer will | |
2666 | * then immediately terminate because the protection address is | |
2667 | * reached upon transfer of the first DWORD value. | |
2668 | */ | |
11e865c1 GP |
2669 | MC_ENABLE(P_MC1, MC1_A2OUT); |
2670 | ||
b6c77757 | 2671 | /* While the DMA transfer is executing ... */ |
11e865c1 | 2672 | |
b6c77757 BP |
2673 | /* Reset Audio2 output FIFO's underflow flag (along with any other |
2674 | * FIFO underflow/overflow flags). When set, this flag will | |
2675 | * indicate that we have emerged from slot 0. | |
2676 | */ | |
11e865c1 GP |
2677 | WR7146(P_ISR, ISR_AFOU); |
2678 | ||
b6c77757 BP |
2679 | /* Wait for the DMA transfer to finish so that there will be data |
2680 | * available in the FIFO when time slot 1 tries to transfer a DWORD | |
2681 | * from the FIFO to the output buffer register. We test for DMA | |
2682 | * Done by polling the DMAC enable flag; this flag is automatically | |
2683 | * cleared when the transfer has finished. | |
2684 | */ | |
add74595 | 2685 | while ((RR7146(P_MC1) & MC1_A2OUT) != 0) |
ae6eb75c | 2686 | ; |
11e865c1 | 2687 | |
b6c77757 | 2688 | /* START THE OUTPUT STREAM TO THE TARGET DAC -------------------- */ |
11e865c1 | 2689 | |
b6c77757 BP |
2690 | /* FIFO data is now available, so we enable execution of time slots |
2691 | * 1 and higher by clearing the EOS flag in slot 0. Note that SD3 | |
2692 | * will be shifted in and stored in FB_BUFFER2 for end-of-slot-list | |
2693 | * detection. | |
2694 | */ | |
11e865c1 GP |
2695 | SETVECT(0, XSD2 | RSD3 | SIB_A2); |
2696 | ||
b6c77757 BP |
2697 | /* Wait for slot 1 to execute to ensure that the Packet will be |
2698 | * transmitted. This is detected by polling the Audio2 output FIFO | |
2699 | * underflow flag, which will be set when slot 1 execution has | |
2700 | * finished transferring the DAC's data DWORD from the output FIFO | |
2701 | * to the output buffer register. | |
2702 | */ | |
add74595 | 2703 | while ((RR7146(P_SSR) & SSR_AF2_OUT) == 0) |
ae6eb75c | 2704 | ; |
11e865c1 | 2705 | |
b6c77757 BP |
2706 | /* Set up to trap execution at slot 0 when the TSL sequencer cycles |
2707 | * back to slot 0 after executing the EOS in slot 5. Also, | |
2708 | * simultaneously shift out and in the 0x00 that is ALWAYS the value | |
2709 | * stored in the last byte to be shifted out of the FIFO's DWORD | |
2710 | * buffer register. | |
2711 | */ | |
11e865c1 GP |
2712 | SETVECT(0, XSD2 | XFIFO_2 | RSD2 | SIB_A2 | EOS); |
2713 | ||
b6c77757 BP |
2714 | /* WAIT FOR THE TRANSACTION TO FINISH ----------------------- */ |
2715 | ||
2716 | /* Wait for the TSL to finish executing all time slots before | |
2717 | * exiting this function. We must do this so that the next DAC | |
2718 | * write doesn't start, thereby enabling clock/chip select signals: | |
2719 | * | |
2720 | * 1. Before the TSL sequence cycles back to slot 0, which disables | |
2721 | * the clock/cs signal gating and traps slot // list execution. | |
2722 | * we have not yet finished slot 5 then the clock/cs signals are | |
2723 | * still gated and we have not finished transmitting the stream. | |
2724 | * | |
2725 | * 2. While slots 2-5 are executing due to a late slot 0 trap. In | |
2726 | * this case, the slot sequence is currently repeating, but with | |
2727 | * clock/cs signals disabled. We must wait for slot 0 to trap | |
2728 | * execution before setting up the next DAC setpoint DMA transfer | |
2729 | * and enabling the clock/cs signals. To detect the end of slot 5, | |
2730 | * we test for the FB_BUFFER2 MSB contents to be equal to 0xFF. If | |
2731 | * the TSL has not yet finished executing slot 5 ... | |
2732 | */ | |
11e865c1 | 2733 | if ((RR7146(P_FB_BUFFER2) & 0xFF000000) != 0) { |
b6c77757 BP |
2734 | /* The trap was set on time and we are still executing somewhere |
2735 | * in slots 2-5, so we now wait for slot 0 to execute and trap | |
2736 | * TSL execution. This is detected when FB_BUFFER2 MSB changes | |
2737 | * from 0xFF to 0x00, which slot 0 causes to happen by shifting | |
2738 | * out/in on SD2 the 0x00 that is always referenced by slot 5. | |
2739 | */ | |
add74595 | 2740 | while ((RR7146(P_FB_BUFFER2) & 0xFF000000) != 0) |
ae6eb75c | 2741 | ; |
11e865c1 | 2742 | } |
b6c77757 BP |
2743 | /* Either (1) we were too late setting the slot 0 trap; the TSL |
2744 | * sequencer restarted slot 0 before we could set the EOS trap flag, | |
2745 | * or (2) we were not late and execution is now trapped at slot 0. | |
2746 | * In either case, we must now change slot 0 so that it will store | |
2747 | * value 0xFF (instead of 0x00) to FB_BUFFER2 next time it executes. | |
2748 | * In order to do this, we reprogram slot 0 so that it will shift in | |
2749 | * SD3, which is driven only by a pull-up resistor. | |
2750 | */ | |
11e865c1 GP |
2751 | SETVECT(0, RSD3 | SIB_A2 | EOS); |
2752 | ||
b6c77757 BP |
2753 | /* Wait for slot 0 to execute, at which time the TSL is setup for |
2754 | * the next DAC write. This is detected when FB_BUFFER2 MSB changes | |
2755 | * from 0x00 to 0xFF. | |
2756 | */ | |
add74595 | 2757 | while ((RR7146(P_FB_BUFFER2) & 0xFF000000) == 0) |
ae6eb75c | 2758 | ; |
11e865c1 GP |
2759 | } |
2760 | ||
71b5f4f1 | 2761 | static void WriteMISC2(struct comedi_device *dev, uint16_t NewImage) |
11e865c1 | 2762 | { |
b6c77757 BP |
2763 | DEBIwrite(dev, LP_MISC1, MISC1_WENABLE); /* enab writes to */ |
2764 | /* MISC2 register. */ | |
2765 | DEBIwrite(dev, LP_WRMISC2, NewImage); /* Write new image to MISC2. */ | |
2766 | DEBIwrite(dev, LP_MISC1, MISC1_WDISABLE); /* Disable writes to MISC2. */ | |
11e865c1 GP |
2767 | } |
2768 | ||
b6c77757 | 2769 | /* Initialize the DEBI interface for all transfers. */ |
11e865c1 | 2770 | |
71b5f4f1 | 2771 | static uint16_t DEBIread(struct comedi_device *dev, uint16_t addr) |
11e865c1 GP |
2772 | { |
2773 | uint16_t retval; | |
2774 | ||
b6c77757 | 2775 | /* Set up DEBI control register value in shadow RAM. */ |
11e865c1 GP |
2776 | WR7146(P_DEBICMD, DEBI_CMD_RDWORD | addr); |
2777 | ||
b6c77757 | 2778 | /* Execute the DEBI transfer. */ |
11e865c1 GP |
2779 | DEBItransfer(dev); |
2780 | ||
b6c77757 | 2781 | /* Fetch target register value. */ |
11e865c1 GP |
2782 | retval = (uint16_t) RR7146(P_DEBIAD); |
2783 | ||
b6c77757 | 2784 | /* Return register value. */ |
11e865c1 GP |
2785 | return retval; |
2786 | } | |
2787 | ||
b6c77757 BP |
2788 | /* Execute a DEBI transfer. This must be called from within a */ |
2789 | /* critical section. */ | |
71b5f4f1 | 2790 | static void DEBItransfer(struct comedi_device *dev) |
11e865c1 | 2791 | { |
b6c77757 | 2792 | /* Initiate upload of shadow RAM to DEBI control register. */ |
11e865c1 GP |
2793 | MC_ENABLE(P_MC2, MC2_UPLD_DEBI); |
2794 | ||
b6c77757 BP |
2795 | /* Wait for completion of upload from shadow RAM to DEBI control */ |
2796 | /* register. */ | |
add74595 | 2797 | while (!MC_TEST(P_MC2, MC2_UPLD_DEBI)) |
ae6eb75c | 2798 | ; |
11e865c1 | 2799 | |
b6c77757 | 2800 | /* Wait until DEBI transfer is done. */ |
add74595 | 2801 | while (RR7146(P_PSR) & PSR_DEBI_S) |
ae6eb75c | 2802 | ; |
11e865c1 GP |
2803 | } |
2804 | ||
b6c77757 | 2805 | /* Write a value to a gate array register. */ |
71b5f4f1 | 2806 | static void DEBIwrite(struct comedi_device *dev, uint16_t addr, uint16_t wdata) |
11e865c1 GP |
2807 | { |
2808 | ||
b6c77757 | 2809 | /* Set up DEBI control register value in shadow RAM. */ |
11e865c1 GP |
2810 | WR7146(P_DEBICMD, DEBI_CMD_WRWORD | addr); |
2811 | WR7146(P_DEBIAD, wdata); | |
2812 | ||
b6c77757 | 2813 | /* Execute the DEBI transfer. */ |
11e865c1 GP |
2814 | DEBItransfer(dev); |
2815 | } | |
2816 | ||
b6c77757 BP |
2817 | /* Replace the specified bits in a gate array register. Imports: mask |
2818 | * specifies bits that are to be preserved, wdata is new value to be | |
2819 | * or'd with the masked original. | |
2820 | */ | |
71b5f4f1 | 2821 | static void DEBIreplace(struct comedi_device *dev, uint16_t addr, uint16_t mask, |
0a85b6f0 | 2822 | uint16_t wdata) |
11e865c1 GP |
2823 | { |
2824 | ||
b6c77757 BP |
2825 | /* Copy target gate array register into P_DEBIAD register. */ |
2826 | WR7146(P_DEBICMD, DEBI_CMD_RDWORD | addr); | |
2827 | /* Set up DEBI control reg value in shadow RAM. */ | |
2828 | DEBItransfer(dev); /* Execute the DEBI Read transfer. */ | |
11e865c1 | 2829 | |
b6c77757 BP |
2830 | /* Write back the modified image. */ |
2831 | WR7146(P_DEBICMD, DEBI_CMD_WRWORD | addr); | |
2832 | /* Set up DEBI control reg value in shadow RAM. */ | |
11e865c1 | 2833 | |
b6c77757 BP |
2834 | WR7146(P_DEBIAD, wdata | ((uint16_t) RR7146(P_DEBIAD) & mask)); |
2835 | /* Modify the register image. */ | |
2836 | DEBItransfer(dev); /* Execute the DEBI Write transfer. */ | |
11e865c1 GP |
2837 | } |
2838 | ||
0a85b6f0 MT |
2839 | static void CloseDMAB(struct comedi_device *dev, struct bufferDMA *pdma, |
2840 | size_t bsize) | |
11e865c1 GP |
2841 | { |
2842 | void *vbptr; | |
2843 | dma_addr_t vpptr; | |
2844 | ||
2845 | DEBUG("CloseDMAB: Entering S626DRV_CloseDMAB():\n"); | |
2846 | if (pdma == NULL) | |
2847 | return; | |
b6c77757 | 2848 | /* find the matching allocation from the board struct */ |
11e865c1 GP |
2849 | |
2850 | vbptr = pdma->LogicalBase; | |
2851 | vpptr = pdma->PhysicalBase; | |
2852 | if (vbptr) { | |
2853 | pci_free_consistent(devpriv->pdev, bsize, vbptr, vpptr); | |
2854 | pdma->LogicalBase = 0; | |
2855 | pdma->PhysicalBase = 0; | |
2856 | ||
2857 | DEBUG("CloseDMAB(): Logical=%p, bsize=%d, Physical=0x%x\n", | |
0a85b6f0 | 2858 | vbptr, bsize, (uint32_t) vpptr); |
11e865c1 GP |
2859 | } |
2860 | } | |
2861 | ||
b6c77757 BP |
2862 | /* ****** COUNTER FUNCTIONS ******* */ |
2863 | /* All counter functions address a specific counter by means of the | |
2864 | * "Counter" argument, which is a logical counter number. The Counter | |
2865 | * argument may have any of the following legal values: 0=0A, 1=1A, | |
2866 | * 2=2A, 3=0B, 4=1B, 5=2B. | |
2867 | */ | |
11e865c1 | 2868 | |
b6c77757 | 2869 | /* Forward declarations for functions that are common to both A and B counters: */ |
11e865c1 | 2870 | |
b6c77757 | 2871 | /* ****** PRIVATE COUNTER FUNCTIONS ****** */ |
11e865c1 | 2872 | |
b6c77757 | 2873 | /* Read a counter's output latch. */ |
11e865c1 | 2874 | |
71b5f4f1 | 2875 | static uint32_t ReadLatch(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
2876 | { |
2877 | register uint32_t value; | |
b6c77757 | 2878 | /* DEBUG FIXME DEBUG("ReadLatch: Read Latch enter\n"); */ |
11e865c1 | 2879 | |
b6c77757 | 2880 | /* Latch counts and fetch LSW of latched counts value. */ |
11e865c1 GP |
2881 | value = (uint32_t) DEBIread(dev, k->MyLatchLsw); |
2882 | ||
b6c77757 | 2883 | /* Fetch MSW of latched counts and combine with LSW. */ |
11e865c1 GP |
2884 | value |= ((uint32_t) DEBIread(dev, k->MyLatchLsw + 2) << 16); |
2885 | ||
b6c77757 | 2886 | /* DEBUG FIXME DEBUG("ReadLatch: Read Latch exit\n"); */ |
11e865c1 | 2887 | |
b6c77757 | 2888 | /* Return latched counts. */ |
11e865c1 GP |
2889 | return value; |
2890 | } | |
2891 | ||
b6c77757 | 2892 | /* Reset a counter's index and overflow event capture flags. */ |
11e865c1 | 2893 | |
71b5f4f1 | 2894 | static void ResetCapFlags_A(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
2895 | { |
2896 | DEBIreplace(dev, k->MyCRB, (uint16_t) (~CRBMSK_INTCTRL), | |
0a85b6f0 | 2897 | CRBMSK_INTRESETCMD | CRBMSK_INTRESET_A); |
11e865c1 GP |
2898 | } |
2899 | ||
71b5f4f1 | 2900 | static void ResetCapFlags_B(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
2901 | { |
2902 | DEBIreplace(dev, k->MyCRB, (uint16_t) (~CRBMSK_INTCTRL), | |
0a85b6f0 | 2903 | CRBMSK_INTRESETCMD | CRBMSK_INTRESET_B); |
11e865c1 GP |
2904 | } |
2905 | ||
b6c77757 BP |
2906 | /* Return counter setup in a format (COUNTER_SETUP) that is consistent */ |
2907 | /* for both A and B counters. */ | |
11e865c1 | 2908 | |
71b5f4f1 | 2909 | static uint16_t GetMode_A(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
2910 | { |
2911 | register uint16_t cra; | |
2912 | register uint16_t crb; | |
2913 | register uint16_t setup; | |
2914 | ||
b6c77757 | 2915 | /* Fetch CRA and CRB register images. */ |
11e865c1 GP |
2916 | cra = DEBIread(dev, k->MyCRA); |
2917 | crb = DEBIread(dev, k->MyCRB); | |
2918 | ||
b6c77757 BP |
2919 | /* Populate the standardized counter setup bit fields. Note: */ |
2920 | /* IndexSrc is restricted to ENC_X or IndxPol. */ | |
2921 | setup = ((cra & STDMSK_LOADSRC) /* LoadSrc = LoadSrcA. */ | |
0a85b6f0 MT |
2922 | |((crb << (STDBIT_LATCHSRC - CRBBIT_LATCHSRC)) & STDMSK_LATCHSRC) /* LatchSrc = LatchSrcA. */ |
2923 | |((cra << (STDBIT_INTSRC - CRABIT_INTSRC_A)) & STDMSK_INTSRC) /* IntSrc = IntSrcA. */ | |
2924 | |((cra << (STDBIT_INDXSRC - (CRABIT_INDXSRC_A + 1))) & STDMSK_INDXSRC) /* IndxSrc = IndxSrcA<1>. */ | |
2925 | |((cra >> (CRABIT_INDXPOL_A - STDBIT_INDXPOL)) & STDMSK_INDXPOL) /* IndxPol = IndxPolA. */ | |
2926 | |((crb >> (CRBBIT_CLKENAB_A - STDBIT_CLKENAB)) & STDMSK_CLKENAB)); /* ClkEnab = ClkEnabA. */ | |
b6c77757 BP |
2927 | |
2928 | /* Adjust mode-dependent parameters. */ | |
2929 | if (cra & (2 << CRABIT_CLKSRC_A)) /* If Timer mode (ClkSrcA<1> == 1): */ | |
2930 | setup |= ((CLKSRC_TIMER << STDBIT_CLKSRC) /* Indicate Timer mode. */ | |
0a85b6f0 MT |
2931 | |((cra << (STDBIT_CLKPOL - CRABIT_CLKSRC_A)) & STDMSK_CLKPOL) /* Set ClkPol to indicate count direction (ClkSrcA<0>). */ |
2932 | |(MULT_X1 << STDBIT_CLKMULT)); /* ClkMult must be 1x in Timer mode. */ | |
b6c77757 BP |
2933 | |
2934 | else /* If Counter mode (ClkSrcA<1> == 0): */ | |
2935 | setup |= ((CLKSRC_COUNTER << STDBIT_CLKSRC) /* Indicate Counter mode. */ | |
0a85b6f0 MT |
2936 | |((cra >> (CRABIT_CLKPOL_A - STDBIT_CLKPOL)) & STDMSK_CLKPOL) /* Pass through ClkPol. */ |
2937 | |(((cra & CRAMSK_CLKMULT_A) == (MULT_X0 << CRABIT_CLKMULT_A)) ? /* Force ClkMult to 1x if not legal, else pass through. */ | |
2938 | (MULT_X1 << STDBIT_CLKMULT) : | |
2939 | ((cra >> (CRABIT_CLKMULT_A - | |
2940 | STDBIT_CLKMULT)) & STDMSK_CLKMULT))); | |
11e865c1 | 2941 | |
b6c77757 | 2942 | /* Return adjusted counter setup. */ |
11e865c1 GP |
2943 | return setup; |
2944 | } | |
2945 | ||
71b5f4f1 | 2946 | static uint16_t GetMode_B(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
2947 | { |
2948 | register uint16_t cra; | |
2949 | register uint16_t crb; | |
2950 | register uint16_t setup; | |
2951 | ||
b6c77757 | 2952 | /* Fetch CRA and CRB register images. */ |
11e865c1 GP |
2953 | cra = DEBIread(dev, k->MyCRA); |
2954 | crb = DEBIread(dev, k->MyCRB); | |
2955 | ||
b6c77757 BP |
2956 | /* Populate the standardized counter setup bit fields. Note: */ |
2957 | /* IndexSrc is restricted to ENC_X or IndxPol. */ | |
2958 | setup = (((crb << (STDBIT_INTSRC - CRBBIT_INTSRC_B)) & STDMSK_INTSRC) /* IntSrc = IntSrcB. */ | |
0a85b6f0 MT |
2959 | |((crb << (STDBIT_LATCHSRC - CRBBIT_LATCHSRC)) & STDMSK_LATCHSRC) /* LatchSrc = LatchSrcB. */ |
2960 | |((crb << (STDBIT_LOADSRC - CRBBIT_LOADSRC_B)) & STDMSK_LOADSRC) /* LoadSrc = LoadSrcB. */ | |
2961 | |((crb << (STDBIT_INDXPOL - CRBBIT_INDXPOL_B)) & STDMSK_INDXPOL) /* IndxPol = IndxPolB. */ | |
2962 | |((crb >> (CRBBIT_CLKENAB_B - STDBIT_CLKENAB)) & STDMSK_CLKENAB) /* ClkEnab = ClkEnabB. */ | |
2963 | |((cra >> ((CRABIT_INDXSRC_B + 1) - STDBIT_INDXSRC)) & STDMSK_INDXSRC)); /* IndxSrc = IndxSrcB<1>. */ | |
b6c77757 BP |
2964 | |
2965 | /* Adjust mode-dependent parameters. */ | |
2966 | if ((crb & CRBMSK_CLKMULT_B) == (MULT_X0 << CRBBIT_CLKMULT_B)) /* If Extender mode (ClkMultB == MULT_X0): */ | |
2967 | setup |= ((CLKSRC_EXTENDER << STDBIT_CLKSRC) /* Indicate Extender mode. */ | |
0a85b6f0 MT |
2968 | |(MULT_X1 << STDBIT_CLKMULT) /* Indicate multiplier is 1x. */ |
2969 | |((cra >> (CRABIT_CLKSRC_B - STDBIT_CLKPOL)) & STDMSK_CLKPOL)); /* Set ClkPol equal to Timer count direction (ClkSrcB<0>). */ | |
b6c77757 BP |
2970 | |
2971 | else if (cra & (2 << CRABIT_CLKSRC_B)) /* If Timer mode (ClkSrcB<1> == 1): */ | |
2972 | setup |= ((CLKSRC_TIMER << STDBIT_CLKSRC) /* Indicate Timer mode. */ | |
0a85b6f0 MT |
2973 | |(MULT_X1 << STDBIT_CLKMULT) /* Indicate multiplier is 1x. */ |
2974 | |((cra >> (CRABIT_CLKSRC_B - STDBIT_CLKPOL)) & STDMSK_CLKPOL)); /* Set ClkPol equal to Timer count direction (ClkSrcB<0>). */ | |
b6c77757 BP |
2975 | |
2976 | else /* If Counter mode (ClkSrcB<1> == 0): */ | |
2977 | setup |= ((CLKSRC_COUNTER << STDBIT_CLKSRC) /* Indicate Timer mode. */ | |
0a85b6f0 MT |
2978 | |((crb >> (CRBBIT_CLKMULT_B - STDBIT_CLKMULT)) & STDMSK_CLKMULT) /* Clock multiplier is passed through. */ |
2979 | |((crb << (STDBIT_CLKPOL - CRBBIT_CLKPOL_B)) & STDMSK_CLKPOL)); /* Clock polarity is passed through. */ | |
b6c77757 BP |
2980 | |
2981 | /* Return adjusted counter setup. */ | |
11e865c1 GP |
2982 | return setup; |
2983 | } | |
2984 | ||
b6c77757 BP |
2985 | /* |
2986 | * Set the operating mode for the specified counter. The setup | |
2987 | * parameter is treated as a COUNTER_SETUP data type. The following | |
2988 | * parameters are programmable (all other parms are ignored): ClkMult, | |
2989 | * ClkPol, ClkEnab, IndexSrc, IndexPol, LoadSrc. | |
2990 | */ | |
11e865c1 | 2991 | |
0a85b6f0 MT |
2992 | static void SetMode_A(struct comedi_device *dev, struct enc_private *k, |
2993 | uint16_t Setup, uint16_t DisableIntSrc) | |
11e865c1 GP |
2994 | { |
2995 | register uint16_t cra; | |
2996 | register uint16_t crb; | |
b6c77757 | 2997 | register uint16_t setup = Setup; /* Cache the Standard Setup. */ |
11e865c1 | 2998 | |
b6c77757 BP |
2999 | /* Initialize CRA and CRB images. */ |
3000 | cra = ((setup & CRAMSK_LOADSRC_A) /* Preload trigger is passed through. */ | |
0a85b6f0 | 3001 | |((setup & STDMSK_INDXSRC) >> (STDBIT_INDXSRC - (CRABIT_INDXSRC_A + 1)))); /* IndexSrc is restricted to ENC_X or IndxPol. */ |
11e865c1 | 3002 | |
b6c77757 | 3003 | crb = (CRBMSK_INTRESETCMD | CRBMSK_INTRESET_A /* Reset any pending CounterA event captures. */ |
0a85b6f0 | 3004 | | ((setup & STDMSK_CLKENAB) << (CRBBIT_CLKENAB_A - STDBIT_CLKENAB))); /* Clock enable is passed through. */ |
11e865c1 | 3005 | |
b6c77757 | 3006 | /* Force IntSrc to Disabled if DisableIntSrc is asserted. */ |
11e865c1 GP |
3007 | if (!DisableIntSrc) |
3008 | cra |= ((setup & STDMSK_INTSRC) >> (STDBIT_INTSRC - | |
0a85b6f0 | 3009 | CRABIT_INTSRC_A)); |
11e865c1 | 3010 | |
b6c77757 | 3011 | /* Populate all mode-dependent attributes of CRA & CRB images. */ |
11e865c1 | 3012 | switch ((setup & STDMSK_CLKSRC) >> STDBIT_CLKSRC) { |
b6c77757 BP |
3013 | case CLKSRC_EXTENDER: /* Extender Mode: Force to Timer mode */ |
3014 | /* (Extender valid only for B counters). */ | |
3015 | ||
3016 | case CLKSRC_TIMER: /* Timer Mode: */ | |
3017 | cra |= ((2 << CRABIT_CLKSRC_A) /* ClkSrcA<1> selects system clock */ | |
0a85b6f0 MT |
3018 | |((setup & STDMSK_CLKPOL) >> (STDBIT_CLKPOL - CRABIT_CLKSRC_A)) /* with count direction (ClkSrcA<0>) obtained from ClkPol. */ |
3019 | |(1 << CRABIT_CLKPOL_A) /* ClkPolA behaves as always-on clock enable. */ | |
3020 | |(MULT_X1 << CRABIT_CLKMULT_A)); /* ClkMult must be 1x. */ | |
11e865c1 GP |
3021 | break; |
3022 | ||
b6c77757 BP |
3023 | default: /* Counter Mode: */ |
3024 | cra |= (CLKSRC_COUNTER /* Select ENC_C and ENC_D as clock/direction inputs. */ | |
3025 | | ((setup & STDMSK_CLKPOL) << (CRABIT_CLKPOL_A - STDBIT_CLKPOL)) /* Clock polarity is passed through. */ | |
0a85b6f0 MT |
3026 | |(((setup & STDMSK_CLKMULT) == (MULT_X0 << STDBIT_CLKMULT)) ? /* Force multiplier to x1 if not legal, otherwise pass through. */ |
3027 | (MULT_X1 << CRABIT_CLKMULT_A) : | |
3028 | ((setup & STDMSK_CLKMULT) << (CRABIT_CLKMULT_A - | |
3029 | STDBIT_CLKMULT)))); | |
11e865c1 GP |
3030 | } |
3031 | ||
b6c77757 BP |
3032 | /* Force positive index polarity if IndxSrc is software-driven only, */ |
3033 | /* otherwise pass it through. */ | |
11e865c1 GP |
3034 | if (~setup & STDMSK_INDXSRC) |
3035 | cra |= ((setup & STDMSK_INDXPOL) << (CRABIT_INDXPOL_A - | |
0a85b6f0 | 3036 | STDBIT_INDXPOL)); |
11e865c1 | 3037 | |
b6c77757 BP |
3038 | /* If IntSrc has been forced to Disabled, update the MISC2 interrupt */ |
3039 | /* enable mask to indicate the counter interrupt is disabled. */ | |
11e865c1 GP |
3040 | if (DisableIntSrc) |
3041 | devpriv->CounterIntEnabs &= ~k->MyEventBits[3]; | |
3042 | ||
b6c77757 BP |
3043 | /* While retaining CounterB and LatchSrc configurations, program the */ |
3044 | /* new counter operating mode. */ | |
11e865c1 GP |
3045 | DEBIreplace(dev, k->MyCRA, CRAMSK_INDXSRC_B | CRAMSK_CLKSRC_B, cra); |
3046 | DEBIreplace(dev, k->MyCRB, | |
0a85b6f0 | 3047 | (uint16_t) (~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_A)), crb); |
11e865c1 GP |
3048 | } |
3049 | ||
0a85b6f0 MT |
3050 | static void SetMode_B(struct comedi_device *dev, struct enc_private *k, |
3051 | uint16_t Setup, uint16_t DisableIntSrc) | |
11e865c1 GP |
3052 | { |
3053 | register uint16_t cra; | |
3054 | register uint16_t crb; | |
b6c77757 | 3055 | register uint16_t setup = Setup; /* Cache the Standard Setup. */ |
11e865c1 | 3056 | |
b6c77757 BP |
3057 | /* Initialize CRA and CRB images. */ |
3058 | cra = ((setup & STDMSK_INDXSRC) << ((CRABIT_INDXSRC_B + 1) - STDBIT_INDXSRC)); /* IndexSrc field is restricted to ENC_X or IndxPol. */ | |
11e865c1 | 3059 | |
b6c77757 | 3060 | crb = (CRBMSK_INTRESETCMD | CRBMSK_INTRESET_B /* Reset event captures and disable interrupts. */ |
0a85b6f0 MT |
3061 | | ((setup & STDMSK_CLKENAB) << (CRBBIT_CLKENAB_B - STDBIT_CLKENAB)) /* Clock enable is passed through. */ |
3062 | |((setup & STDMSK_LOADSRC) >> (STDBIT_LOADSRC - CRBBIT_LOADSRC_B))); /* Preload trigger source is passed through. */ | |
11e865c1 | 3063 | |
b6c77757 | 3064 | /* Force IntSrc to Disabled if DisableIntSrc is asserted. */ |
11e865c1 GP |
3065 | if (!DisableIntSrc) |
3066 | crb |= ((setup & STDMSK_INTSRC) >> (STDBIT_INTSRC - | |
0a85b6f0 | 3067 | CRBBIT_INTSRC_B)); |
11e865c1 | 3068 | |
b6c77757 | 3069 | /* Populate all mode-dependent attributes of CRA & CRB images. */ |
11e865c1 | 3070 | switch ((setup & STDMSK_CLKSRC) >> STDBIT_CLKSRC) { |
b6c77757 BP |
3071 | case CLKSRC_TIMER: /* Timer Mode: */ |
3072 | cra |= ((2 << CRABIT_CLKSRC_B) /* ClkSrcB<1> selects system clock */ | |
0a85b6f0 | 3073 | |((setup & STDMSK_CLKPOL) << (CRABIT_CLKSRC_B - STDBIT_CLKPOL))); /* with direction (ClkSrcB<0>) obtained from ClkPol. */ |
b6c77757 | 3074 | crb |= ((1 << CRBBIT_CLKPOL_B) /* ClkPolB behaves as always-on clock enable. */ |
0a85b6f0 | 3075 | |(MULT_X1 << CRBBIT_CLKMULT_B)); /* ClkMultB must be 1x. */ |
11e865c1 GP |
3076 | break; |
3077 | ||
b6c77757 BP |
3078 | case CLKSRC_EXTENDER: /* Extender Mode: */ |
3079 | cra |= ((2 << CRABIT_CLKSRC_B) /* ClkSrcB source is OverflowA (same as "timer") */ | |
0a85b6f0 | 3080 | |((setup & STDMSK_CLKPOL) << (CRABIT_CLKSRC_B - STDBIT_CLKPOL))); /* with direction obtained from ClkPol. */ |
b6c77757 | 3081 | crb |= ((1 << CRBBIT_CLKPOL_B) /* ClkPolB controls IndexB -- always set to active. */ |
0a85b6f0 | 3082 | |(MULT_X0 << CRBBIT_CLKMULT_B)); /* ClkMultB selects OverflowA as the clock source. */ |
11e865c1 GP |
3083 | break; |
3084 | ||
b6c77757 BP |
3085 | default: /* Counter Mode: */ |
3086 | cra |= (CLKSRC_COUNTER << CRABIT_CLKSRC_B); /* Select ENC_C and ENC_D as clock/direction inputs. */ | |
3087 | crb |= (((setup & STDMSK_CLKPOL) >> (STDBIT_CLKPOL - CRBBIT_CLKPOL_B)) /* ClkPol is passed through. */ | |
0a85b6f0 MT |
3088 | |(((setup & STDMSK_CLKMULT) == (MULT_X0 << STDBIT_CLKMULT)) ? /* Force ClkMult to x1 if not legal, otherwise pass through. */ |
3089 | (MULT_X1 << CRBBIT_CLKMULT_B) : | |
3090 | ((setup & STDMSK_CLKMULT) << (CRBBIT_CLKMULT_B - | |
3091 | STDBIT_CLKMULT)))); | |
11e865c1 GP |
3092 | } |
3093 | ||
b6c77757 BP |
3094 | /* Force positive index polarity if IndxSrc is software-driven only, */ |
3095 | /* otherwise pass it through. */ | |
11e865c1 GP |
3096 | if (~setup & STDMSK_INDXSRC) |
3097 | crb |= ((setup & STDMSK_INDXPOL) >> (STDBIT_INDXPOL - | |
0a85b6f0 | 3098 | CRBBIT_INDXPOL_B)); |
11e865c1 | 3099 | |
b6c77757 BP |
3100 | /* If IntSrc has been forced to Disabled, update the MISC2 interrupt */ |
3101 | /* enable mask to indicate the counter interrupt is disabled. */ | |
11e865c1 GP |
3102 | if (DisableIntSrc) |
3103 | devpriv->CounterIntEnabs &= ~k->MyEventBits[3]; | |
3104 | ||
b6c77757 BP |
3105 | /* While retaining CounterA and LatchSrc configurations, program the */ |
3106 | /* new counter operating mode. */ | |
11e865c1 | 3107 | DEBIreplace(dev, k->MyCRA, |
0a85b6f0 | 3108 | (uint16_t) (~(CRAMSK_INDXSRC_B | CRAMSK_CLKSRC_B)), cra); |
11e865c1 GP |
3109 | DEBIreplace(dev, k->MyCRB, CRBMSK_CLKENAB_A | CRBMSK_LATCHSRC, crb); |
3110 | } | |
3111 | ||
b6c77757 | 3112 | /* Return/set a counter's enable. enab: 0=always enabled, 1=enabled by index. */ |
11e865c1 | 3113 | |
0a85b6f0 MT |
3114 | static void SetEnable_A(struct comedi_device *dev, struct enc_private *k, |
3115 | uint16_t enab) | |
11e865c1 GP |
3116 | { |
3117 | DEBUG("SetEnable_A: SetEnable_A enter 3541\n"); | |
3118 | DEBIreplace(dev, k->MyCRB, | |
0a85b6f0 MT |
3119 | (uint16_t) (~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_A)), |
3120 | (uint16_t) (enab << CRBBIT_CLKENAB_A)); | |
11e865c1 GP |
3121 | } |
3122 | ||
0a85b6f0 MT |
3123 | static void SetEnable_B(struct comedi_device *dev, struct enc_private *k, |
3124 | uint16_t enab) | |
11e865c1 GP |
3125 | { |
3126 | DEBIreplace(dev, k->MyCRB, | |
0a85b6f0 MT |
3127 | (uint16_t) (~(CRBMSK_INTCTRL | CRBMSK_CLKENAB_B)), |
3128 | (uint16_t) (enab << CRBBIT_CLKENAB_B)); | |
11e865c1 GP |
3129 | } |
3130 | ||
71b5f4f1 | 3131 | static uint16_t GetEnable_A(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
3132 | { |
3133 | return (DEBIread(dev, k->MyCRB) >> CRBBIT_CLKENAB_A) & 1; | |
3134 | } | |
3135 | ||
71b5f4f1 | 3136 | static uint16_t GetEnable_B(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
3137 | { |
3138 | return (DEBIread(dev, k->MyCRB) >> CRBBIT_CLKENAB_B) & 1; | |
3139 | } | |
3140 | ||
b6c77757 BP |
3141 | /* Return/set a counter pair's latch trigger source. 0: On read |
3142 | * access, 1: A index latches A, 2: B index latches B, 3: A overflow | |
3143 | * latches B. | |
3144 | */ | |
11e865c1 | 3145 | |
0a85b6f0 MT |
3146 | static void SetLatchSource(struct comedi_device *dev, struct enc_private *k, |
3147 | uint16_t value) | |
11e865c1 | 3148 | { |
daca497d | 3149 | DEBUG("SetLatchSource: SetLatchSource enter 3550\n"); |
11e865c1 | 3150 | DEBIreplace(dev, k->MyCRB, |
0a85b6f0 MT |
3151 | (uint16_t) (~(CRBMSK_INTCTRL | CRBMSK_LATCHSRC)), |
3152 | (uint16_t) (value << CRBBIT_LATCHSRC)); | |
11e865c1 | 3153 | |
daca497d | 3154 | DEBUG("SetLatchSource: SetLatchSource exit\n"); |
11e865c1 GP |
3155 | } |
3156 | ||
b6c77757 | 3157 | /* |
71b5f4f1 | 3158 | * static uint16_t GetLatchSource(struct comedi_device *dev, struct enc_private *k ) |
b6c77757 | 3159 | * { |
ae6eb75c | 3160 | * return ( DEBIread( dev, k->MyCRB) >> CRBBIT_LATCHSRC ) & 3; |
b6c77757 BP |
3161 | * } |
3162 | */ | |
11e865c1 | 3163 | |
b6c77757 BP |
3164 | /* |
3165 | * Return/set the event that will trigger transfer of the preload | |
3166 | * register into the counter. 0=ThisCntr_Index, 1=ThisCntr_Overflow, | |
3167 | * 2=OverflowA (B counters only), 3=disabled. | |
3168 | */ | |
11e865c1 | 3169 | |
0a85b6f0 MT |
3170 | static void SetLoadTrig_A(struct comedi_device *dev, struct enc_private *k, |
3171 | uint16_t Trig) | |
11e865c1 GP |
3172 | { |
3173 | DEBIreplace(dev, k->MyCRA, (uint16_t) (~CRAMSK_LOADSRC_A), | |
0a85b6f0 | 3174 | (uint16_t) (Trig << CRABIT_LOADSRC_A)); |
11e865c1 GP |
3175 | } |
3176 | ||
0a85b6f0 MT |
3177 | static void SetLoadTrig_B(struct comedi_device *dev, struct enc_private *k, |
3178 | uint16_t Trig) | |
11e865c1 GP |
3179 | { |
3180 | DEBIreplace(dev, k->MyCRB, | |
0a85b6f0 MT |
3181 | (uint16_t) (~(CRBMSK_LOADSRC_B | CRBMSK_INTCTRL)), |
3182 | (uint16_t) (Trig << CRBBIT_LOADSRC_B)); | |
11e865c1 GP |
3183 | } |
3184 | ||
71b5f4f1 | 3185 | static uint16_t GetLoadTrig_A(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
3186 | { |
3187 | return (DEBIread(dev, k->MyCRA) >> CRABIT_LOADSRC_A) & 3; | |
3188 | } | |
3189 | ||
71b5f4f1 | 3190 | static uint16_t GetLoadTrig_B(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
3191 | { |
3192 | return (DEBIread(dev, k->MyCRB) >> CRBBIT_LOADSRC_B) & 3; | |
3193 | } | |
3194 | ||
b6c77757 BP |
3195 | /* Return/set counter interrupt source and clear any captured |
3196 | * index/overflow events. IntSource: 0=Disabled, 1=OverflowOnly, | |
3197 | * 2=IndexOnly, 3=IndexAndOverflow. | |
3198 | */ | |
11e865c1 | 3199 | |
71b5f4f1 | 3200 | static void SetIntSrc_A(struct comedi_device *dev, struct enc_private *k, |
0a85b6f0 | 3201 | uint16_t IntSource) |
11e865c1 | 3202 | { |
b6c77757 | 3203 | /* Reset any pending counter overflow or index captures. */ |
11e865c1 | 3204 | DEBIreplace(dev, k->MyCRB, (uint16_t) (~CRBMSK_INTCTRL), |
0a85b6f0 | 3205 | CRBMSK_INTRESETCMD | CRBMSK_INTRESET_A); |
11e865c1 | 3206 | |
b6c77757 | 3207 | /* Program counter interrupt source. */ |
11e865c1 | 3208 | DEBIreplace(dev, k->MyCRA, ~CRAMSK_INTSRC_A, |
0a85b6f0 | 3209 | (uint16_t) (IntSource << CRABIT_INTSRC_A)); |
11e865c1 | 3210 | |
b6c77757 | 3211 | /* Update MISC2 interrupt enable mask. */ |
11e865c1 | 3212 | devpriv->CounterIntEnabs = |
0a85b6f0 MT |
3213 | (devpriv->CounterIntEnabs & ~k-> |
3214 | MyEventBits[3]) | k->MyEventBits[IntSource]; | |
11e865c1 GP |
3215 | } |
3216 | ||
71b5f4f1 | 3217 | static void SetIntSrc_B(struct comedi_device *dev, struct enc_private *k, |
0a85b6f0 | 3218 | uint16_t IntSource) |
11e865c1 GP |
3219 | { |
3220 | uint16_t crb; | |
3221 | ||
b6c77757 | 3222 | /* Cache writeable CRB register image. */ |
11e865c1 GP |
3223 | crb = DEBIread(dev, k->MyCRB) & ~CRBMSK_INTCTRL; |
3224 | ||
b6c77757 | 3225 | /* Reset any pending counter overflow or index captures. */ |
11e865c1 | 3226 | DEBIwrite(dev, k->MyCRB, |
0a85b6f0 | 3227 | (uint16_t) (crb | CRBMSK_INTRESETCMD | CRBMSK_INTRESET_B)); |
11e865c1 | 3228 | |
b6c77757 | 3229 | /* Program counter interrupt source. */ |
11e865c1 | 3230 | DEBIwrite(dev, k->MyCRB, |
0a85b6f0 MT |
3231 | (uint16_t) ((crb & ~CRBMSK_INTSRC_B) | (IntSource << |
3232 | CRBBIT_INTSRC_B))); | |
11e865c1 | 3233 | |
b6c77757 | 3234 | /* Update MISC2 interrupt enable mask. */ |
11e865c1 | 3235 | devpriv->CounterIntEnabs = |
0a85b6f0 MT |
3236 | (devpriv->CounterIntEnabs & ~k-> |
3237 | MyEventBits[3]) | k->MyEventBits[IntSource]; | |
11e865c1 GP |
3238 | } |
3239 | ||
71b5f4f1 | 3240 | static uint16_t GetIntSrc_A(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
3241 | { |
3242 | return (DEBIread(dev, k->MyCRA) >> CRABIT_INTSRC_A) & 3; | |
3243 | } | |
3244 | ||
71b5f4f1 | 3245 | static uint16_t GetIntSrc_B(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
3246 | { |
3247 | return (DEBIread(dev, k->MyCRB) >> CRBBIT_INTSRC_B) & 3; | |
3248 | } | |
3249 | ||
b6c77757 | 3250 | /* Return/set the clock multiplier. */ |
11e865c1 | 3251 | |
71b5f4f1 | 3252 | /* static void SetClkMult(struct comedi_device *dev, struct enc_private *k, uint16_t value ) */ |
11e865c1 GP |
3253 | /* { */ |
3254 | /* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_CLKMULT ) | ( value << STDBIT_CLKMULT ) ), FALSE ); */ | |
3255 | /* } */ | |
3256 | ||
71b5f4f1 | 3257 | /* static uint16_t GetClkMult(struct comedi_device *dev, struct enc_private *k ) */ |
11e865c1 GP |
3258 | /* { */ |
3259 | /* return ( k->GetMode(dev, k ) >> STDBIT_CLKMULT ) & 3; */ | |
3260 | /* } */ | |
3261 | ||
b6c77757 | 3262 | /* Return/set the clock polarity. */ |
11e865c1 | 3263 | |
71b5f4f1 | 3264 | /* static void SetClkPol( struct comedi_device *dev,struct enc_private *k, uint16_t value ) */ |
11e865c1 GP |
3265 | /* { */ |
3266 | /* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_CLKPOL ) | ( value << STDBIT_CLKPOL ) ), FALSE ); */ | |
3267 | /* } */ | |
3268 | ||
71b5f4f1 | 3269 | /* static uint16_t GetClkPol(struct comedi_device *dev, struct enc_private *k ) */ |
11e865c1 GP |
3270 | /* { */ |
3271 | /* return ( k->GetMode(dev, k ) >> STDBIT_CLKPOL ) & 1; */ | |
3272 | /* } */ | |
3273 | ||
b6c77757 | 3274 | /* Return/set the clock source. */ |
11e865c1 | 3275 | |
71b5f4f1 | 3276 | /* static void SetClkSrc( struct comedi_device *dev,struct enc_private *k, uint16_t value ) */ |
11e865c1 GP |
3277 | /* { */ |
3278 | /* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_CLKSRC ) | ( value << STDBIT_CLKSRC ) ), FALSE ); */ | |
3279 | /* } */ | |
3280 | ||
71b5f4f1 | 3281 | /* static uint16_t GetClkSrc( struct comedi_device *dev,struct enc_private *k ) */ |
11e865c1 GP |
3282 | /* { */ |
3283 | /* return ( k->GetMode(dev, k ) >> STDBIT_CLKSRC ) & 3; */ | |
3284 | /* } */ | |
3285 | ||
b6c77757 | 3286 | /* Return/set the index polarity. */ |
11e865c1 | 3287 | |
71b5f4f1 | 3288 | /* static void SetIndexPol(struct comedi_device *dev, struct enc_private *k, uint16_t value ) */ |
11e865c1 GP |
3289 | /* { */ |
3290 | /* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_INDXPOL ) | ( (value != 0) << STDBIT_INDXPOL ) ), FALSE ); */ | |
3291 | /* } */ | |
3292 | ||
71b5f4f1 | 3293 | /* static uint16_t GetIndexPol(struct comedi_device *dev, struct enc_private *k ) */ |
11e865c1 GP |
3294 | /* { */ |
3295 | /* return ( k->GetMode(dev, k ) >> STDBIT_INDXPOL ) & 1; */ | |
3296 | /* } */ | |
3297 | ||
b6c77757 | 3298 | /* Return/set the index source. */ |
11e865c1 | 3299 | |
71b5f4f1 | 3300 | /* static void SetIndexSrc(struct comedi_device *dev, struct enc_private *k, uint16_t value ) */ |
11e865c1 GP |
3301 | /* { */ |
3302 | /* DEBUG("SetIndexSrc: set index src enter 3700\n"); */ | |
3303 | /* k->SetMode(dev, k, (uint16_t)( ( k->GetMode(dev, k ) & ~STDMSK_INDXSRC ) | ( (value != 0) << STDBIT_INDXSRC ) ), FALSE ); */ | |
3304 | /* } */ | |
3305 | ||
71b5f4f1 | 3306 | /* static uint16_t GetIndexSrc(struct comedi_device *dev, struct enc_private *k ) */ |
11e865c1 GP |
3307 | /* { */ |
3308 | /* return ( k->GetMode(dev, k ) >> STDBIT_INDXSRC ) & 1; */ | |
3309 | /* } */ | |
3310 | ||
b6c77757 | 3311 | /* Generate an index pulse. */ |
11e865c1 | 3312 | |
71b5f4f1 | 3313 | static void PulseIndex_A(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
3314 | { |
3315 | register uint16_t cra; | |
3316 | ||
3317 | DEBUG("PulseIndex_A: pulse index enter\n"); | |
3318 | ||
b6c77757 | 3319 | cra = DEBIread(dev, k->MyCRA); /* Pulse index. */ |
11e865c1 GP |
3320 | DEBIwrite(dev, k->MyCRA, (uint16_t) (cra ^ CRAMSK_INDXPOL_A)); |
3321 | DEBUG("PulseIndex_A: pulse index step1\n"); | |
3322 | DEBIwrite(dev, k->MyCRA, cra); | |
3323 | } | |
3324 | ||
71b5f4f1 | 3325 | static void PulseIndex_B(struct comedi_device *dev, struct enc_private *k) |
11e865c1 GP |
3326 | { |
3327 | register uint16_t crb; | |
3328 | ||
b6c77757 | 3329 | crb = DEBIread(dev, k->MyCRB) & ~CRBMSK_INTCTRL; /* Pulse index. */ |
11e865c1 GP |
3330 | DEBIwrite(dev, k->MyCRB, (uint16_t) (crb ^ CRBMSK_INDXPOL_B)); |
3331 | DEBIwrite(dev, k->MyCRB, crb); | |
3332 | } | |
3333 | ||
b6c77757 | 3334 | /* Write value into counter preload register. */ |
11e865c1 | 3335 | |
0a85b6f0 MT |
3336 | static void Preload(struct comedi_device *dev, struct enc_private *k, |
3337 | uint32_t value) | |
11e865c1 GP |
3338 | { |
3339 | DEBUG("Preload: preload enter\n"); | |
b6c77757 | 3340 | DEBIwrite(dev, (uint16_t) (k->MyLatchLsw), (uint16_t) value); /* Write value to preload register. */ |
11e865c1 GP |
3341 | DEBUG("Preload: preload step 1\n"); |
3342 | DEBIwrite(dev, (uint16_t) (k->MyLatchLsw + 2), | |
0a85b6f0 | 3343 | (uint16_t) (value >> 16)); |
11e865c1 GP |
3344 | } |
3345 | ||
71b5f4f1 | 3346 | static void CountersInit(struct comedi_device *dev) |
11e865c1 GP |
3347 | { |
3348 | int chan; | |
eb5e029e | 3349 | struct enc_private *k; |
b6c77757 | 3350 | uint16_t Setup = (LOADSRC_INDX << BF_LOADSRC) | /* Preload upon */ |
0a85b6f0 MT |
3351 | /* index. */ |
3352 | (INDXSRC_SOFT << BF_INDXSRC) | /* Disable hardware index. */ | |
3353 | (CLKSRC_COUNTER << BF_CLKSRC) | /* Operating mode is counter. */ | |
3354 | (CLKPOL_POS << BF_CLKPOL) | /* Active high clock. */ | |
3355 | (CNTDIR_UP << BF_CLKPOL) | /* Count direction is up. */ | |
3356 | (CLKMULT_1X << BF_CLKMULT) | /* Clock multiplier is 1x. */ | |
3357 | (CLKENAB_INDEX << BF_CLKENAB); /* Enabled by index */ | |
b6c77757 BP |
3358 | |
3359 | /* Disable all counter interrupts and clear any captured counter events. */ | |
11e865c1 GP |
3360 | for (chan = 0; chan < S626_ENCODER_CHANNELS; chan++) { |
3361 | k = &encpriv[chan]; | |
3362 | k->SetMode(dev, k, Setup, TRUE); | |
3363 | k->SetIntSrc(dev, k, 0); | |
3364 | k->ResetCapFlags(dev, k); | |
3365 | k->SetEnable(dev, k, CLKENAB_ALWAYS); | |
3366 | } | |
daca497d | 3367 | DEBUG("CountersInit: counters initialized\n"); |
11e865c1 GP |
3368 | |
3369 | } |