2 * winbond-cir.c - Driver for the Consumer IR functionality of Winbond
5 * Currently supports the Winbond WPCD376i chip (PNP id WEC1022), but
6 * could probably support others (Winbond WEC102X, NatSemi, etc)
7 * with minor modifications.
9 * Original Author: David Härdeman <david@hardeman.nu>
10 * Copyright (C) 2009 - 2010 David Härdeman <david@hardeman.nu>
12 * Dedicated to my daughter Matilda, without whose loving attention this
13 * driver would have been finished in half the time and with a fraction
17 * o Winbond WPCD376I datasheet helpfully provided by Jesse Barnes at Intel
18 * o NatSemi PC87338/PC97338 datasheet (for the serial port stuff)
24 * o Wake-On-CIR functionality
29 * This program is free software; you can redistribute it and/or modify
30 * it under the terms of the GNU General Public License as published by
31 * the Free Software Foundation; either version 2 of the License, or
32 * (at your option) any later version.
34 * This program is distributed in the hope that it will be useful,
35 * but WITHOUT ANY WARRANTY; without even the implied warranty of
36 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
37 * GNU General Public License for more details.
39 * You should have received a copy of the GNU General Public License
40 * along with this program; if not, write to the Free Software
41 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
44 #include <linux/module.h>
45 #include <linux/pnp.h>
46 #include <linux/interrupt.h>
47 #include <linux/timer.h>
48 #include <linux/leds.h>
49 #include <linux/spinlock.h>
50 #include <linux/pci_ids.h>
52 #include <linux/bitrev.h>
53 #include <linux/slab.h>
54 #include <linux/wait.h>
55 #include <linux/sched.h>
56 #include <media/rc-core.h>
58 #define DRVNAME "winbond-cir"
60 /* CEIR Wake-Up Registers, relative to data->wbase */
61 #define WBCIR_REG_WCEIR_CTL 0x03 /* CEIR Receiver Control */
62 #define WBCIR_REG_WCEIR_STS 0x04 /* CEIR Receiver Status */
63 #define WBCIR_REG_WCEIR_EV_EN 0x05 /* CEIR Receiver Event Enable */
64 #define WBCIR_REG_WCEIR_CNTL 0x06 /* CEIR Receiver Counter Low */
65 #define WBCIR_REG_WCEIR_CNTH 0x07 /* CEIR Receiver Counter High */
66 #define WBCIR_REG_WCEIR_INDEX 0x08 /* CEIR Receiver Index */
67 #define WBCIR_REG_WCEIR_DATA 0x09 /* CEIR Receiver Data */
68 #define WBCIR_REG_WCEIR_CSL 0x0A /* CEIR Re. Compare Strlen */
69 #define WBCIR_REG_WCEIR_CFG1 0x0B /* CEIR Re. Configuration 1 */
70 #define WBCIR_REG_WCEIR_CFG2 0x0C /* CEIR Re. Configuration 2 */
72 /* CEIR Enhanced Functionality Registers, relative to data->ebase */
73 #define WBCIR_REG_ECEIR_CTS 0x00 /* Enhanced IR Control Status */
74 #define WBCIR_REG_ECEIR_CCTL 0x01 /* Infrared Counter Control */
75 #define WBCIR_REG_ECEIR_CNT_LO 0x02 /* Infrared Counter LSB */
76 #define WBCIR_REG_ECEIR_CNT_HI 0x03 /* Infrared Counter MSB */
77 #define WBCIR_REG_ECEIR_IREM 0x04 /* Infrared Emitter Status */
79 /* SP3 Banked Registers, relative to data->sbase */
80 #define WBCIR_REG_SP3_BSR 0x03 /* Bank Select, all banks */
82 #define WBCIR_REG_SP3_RXDATA 0x00 /* FIFO RX data (r) */
83 #define WBCIR_REG_SP3_TXDATA 0x00 /* FIFO TX data (w) */
84 #define WBCIR_REG_SP3_IER 0x01 /* Interrupt Enable */
85 #define WBCIR_REG_SP3_EIR 0x02 /* Event Identification (r) */
86 #define WBCIR_REG_SP3_FCR 0x02 /* FIFO Control (w) */
87 #define WBCIR_REG_SP3_MCR 0x04 /* Mode Control */
88 #define WBCIR_REG_SP3_LSR 0x05 /* Link Status */
89 #define WBCIR_REG_SP3_MSR 0x06 /* Modem Status */
90 #define WBCIR_REG_SP3_ASCR 0x07 /* Aux Status and Control */
92 #define WBCIR_REG_SP3_BGDL 0x00 /* Baud Divisor LSB */
93 #define WBCIR_REG_SP3_BGDH 0x01 /* Baud Divisor MSB */
94 #define WBCIR_REG_SP3_EXCR1 0x02 /* Extended Control 1 */
95 #define WBCIR_REG_SP3_EXCR2 0x04 /* Extended Control 2 */
96 #define WBCIR_REG_SP3_TXFLV 0x06 /* TX FIFO Level */
97 #define WBCIR_REG_SP3_RXFLV 0x07 /* RX FIFO Level */
99 #define WBCIR_REG_SP3_MRID 0x00 /* Module Identification */
100 #define WBCIR_REG_SP3_SH_LCR 0x01 /* LCR Shadow */
101 #define WBCIR_REG_SP3_SH_FCR 0x02 /* FCR Shadow */
103 #define WBCIR_REG_SP3_IRCR1 0x02 /* Infrared Control 1 */
105 #define WBCIR_REG_SP3_IRCR2 0x04 /* Infrared Control 2 */
107 #define WBCIR_REG_SP3_IRCR3 0x00 /* Infrared Control 3 */
108 #define WBCIR_REG_SP3_SIR_PW 0x02 /* SIR Pulse Width */
110 #define WBCIR_REG_SP3_IRRXDC 0x00 /* IR RX Demod Control */
111 #define WBCIR_REG_SP3_IRTXMC 0x01 /* IR TX Mod Control */
112 #define WBCIR_REG_SP3_RCCFG 0x02 /* CEIR Config */
113 #define WBCIR_REG_SP3_IRCFG1 0x04 /* Infrared Config 1 */
114 #define WBCIR_REG_SP3_IRCFG4 0x07 /* Infrared Config 4 */
117 * Magic values follow
120 /* No interrupts for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
121 #define WBCIR_IRQ_NONE 0x00
122 /* RX data bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
123 #define WBCIR_IRQ_RX 0x01
124 /* TX data low bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
125 #define WBCIR_IRQ_TX_LOW 0x02
126 /* Over/Under-flow bit for WBCIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
127 #define WBCIR_IRQ_ERR 0x04
128 /* TX data empty bit for WBCEIR_REG_SP3_IER and WBCIR_REG_SP3_EIR */
129 #define WBCIR_IRQ_TX_EMPTY 0x20
130 /* Led enable/disable bit for WBCIR_REG_ECEIR_CTS */
131 #define WBCIR_LED_ENABLE 0x80
132 /* RX data available bit for WBCIR_REG_SP3_LSR */
133 #define WBCIR_RX_AVAIL 0x01
134 /* RX data overrun error bit for WBCIR_REG_SP3_LSR */
135 #define WBCIR_RX_OVERRUN 0x02
136 /* TX End-Of-Transmission bit for WBCIR_REG_SP3_ASCR */
137 #define WBCIR_TX_EOT 0x04
138 /* RX disable bit for WBCIR_REG_SP3_ASCR */
139 #define WBCIR_RX_DISABLE 0x20
140 /* TX data underrun error bit for WBCIR_REG_SP3_ASCR */
141 #define WBCIR_TX_UNDERRUN 0x40
142 /* Extended mode enable bit for WBCIR_REG_SP3_EXCR1 */
143 #define WBCIR_EXT_ENABLE 0x01
144 /* Select compare register in WBCIR_REG_WCEIR_INDEX (bits 5 & 6) */
145 #define WBCIR_REGSEL_COMPARE 0x10
146 /* Select mask register in WBCIR_REG_WCEIR_INDEX (bits 5 & 6) */
147 #define WBCIR_REGSEL_MASK 0x20
148 /* Starting address of selected register in WBCIR_REG_WCEIR_INDEX */
149 #define WBCIR_REG_ADDR0 0x00
151 /* Valid banks for the SP3 UART */
163 /* Supported power-on IR Protocols */
164 enum wbcir_protocol
{
165 IR_PROTOCOL_RC5
= 0x0,
166 IR_PROTOCOL_NEC
= 0x1,
167 IR_PROTOCOL_RC6
= 0x2,
170 /* Possible states for IR reception */
172 WBCIR_RXSTATE_INACTIVE
= 0,
173 WBCIR_RXSTATE_ACTIVE
,
177 /* Possible states for IR transmission */
179 WBCIR_TXSTATE_INACTIVE
= 0,
180 WBCIR_TXSTATE_ACTIVE
,
186 #define WBCIR_NAME "Winbond CIR"
187 #define WBCIR_ID_FAMILY 0xF1 /* Family ID for the WPCD376I */
188 #define WBCIR_ID_CHIP 0x04 /* Chip ID for the WPCD376I */
189 #define INVALID_SCANCODE 0x7FFFFFFF /* Invalid with all protos */
190 #define WAKEUP_IOMEM_LEN 0x10 /* Wake-Up I/O Reg Len */
191 #define EHFUNC_IOMEM_LEN 0x10 /* Enhanced Func I/O Reg Len */
192 #define SP_IOMEM_LEN 0x08 /* Serial Port 3 (IR) Reg Len */
194 /* Per-device data */
198 struct led_classdev led
;
200 unsigned long wbase
; /* Wake-Up Baseaddr */
201 unsigned long ebase
; /* Enhanced Func. Baseaddr */
202 unsigned long sbase
; /* Serial Port Baseaddr */
203 unsigned int irq
; /* Serial Port IRQ */
207 enum wbcir_rxstate rxstate
;
208 struct led_trigger
*rxtrigger
;
209 struct ir_raw_event rxev
;
212 enum wbcir_txstate txstate
;
213 struct led_trigger
*txtrigger
;
217 wait_queue_head_t txwaitq
;
222 static enum wbcir_protocol protocol
= IR_PROTOCOL_RC6
;
223 module_param(protocol
, uint
, 0444);
224 MODULE_PARM_DESC(protocol
, "IR protocol to use for the power-on command "
225 "(0 = RC5, 1 = NEC, 2 = RC6A, default)");
227 static int invert
; /* default = 0 */
228 module_param(invert
, bool, 0444);
229 MODULE_PARM_DESC(invert
, "Invert the signal from the IR receiver");
231 static int txandrx
; /* default = 0 */
232 module_param(txandrx
, bool, 0444);
233 MODULE_PARM_DESC(invert
, "Allow simultaneous TX and RX");
235 static unsigned int wake_sc
= 0x800F040C;
236 module_param(wake_sc
, uint
, 0644);
237 MODULE_PARM_DESC(wake_sc
, "Scancode of the power-on IR command");
239 static unsigned int wake_rc6mode
= 6;
240 module_param(wake_rc6mode
, uint
, 0644);
241 MODULE_PARM_DESC(wake_rc6mode
, "RC6 mode for the power-on command "
242 "(0 = 0, 6 = 6A, default)");
246 /*****************************************************************************
250 *****************************************************************************/
252 /* Caller needs to hold wbcir_lock */
254 wbcir_set_bits(unsigned long addr
, u8 bits
, u8 mask
)
259 val
= ((val
& ~mask
) | (bits
& mask
));
263 /* Selects the register bank for the serial port */
265 wbcir_select_bank(struct wbcir_data
*data
, enum wbcir_bank bank
)
267 outb(bank
, data
->sbase
+ WBCIR_REG_SP3_BSR
);
271 wbcir_set_irqmask(struct wbcir_data
*data
, u8 irqmask
)
273 if (data
->irqmask
== irqmask
)
276 wbcir_select_bank(data
, WBCIR_BANK_0
);
277 outb(irqmask
, data
->sbase
+ WBCIR_REG_SP3_IER
);
278 data
->irqmask
= irqmask
;
281 static enum led_brightness
282 wbcir_led_brightness_get(struct led_classdev
*led_cdev
)
284 struct wbcir_data
*data
= container_of(led_cdev
,
288 if (inb(data
->ebase
+ WBCIR_REG_ECEIR_CTS
) & WBCIR_LED_ENABLE
)
295 wbcir_led_brightness_set(struct led_classdev
*led_cdev
,
296 enum led_brightness brightness
)
298 struct wbcir_data
*data
= container_of(led_cdev
,
302 wbcir_set_bits(data
->ebase
+ WBCIR_REG_ECEIR_CTS
,
303 brightness
== LED_OFF
? 0x00 : WBCIR_LED_ENABLE
,
307 /* Manchester encodes bits to RC6 message cells (see wbcir_shutdown) */
309 wbcir_to_rc6cells(u8 val
)
315 for (i
= 0; i
< 4; i
++) {
317 coded
|= 0x02 << (i
* 2);
319 coded
|= 0x01 << (i
* 2);
326 /*****************************************************************************
328 * INTERRUPT FUNCTIONS
330 *****************************************************************************/
333 wbcir_idle_rx(struct rc_dev
*dev
, bool idle
)
335 struct wbcir_data
*data
= dev
->priv
;
337 if (!idle
&& data
->rxstate
== WBCIR_RXSTATE_INACTIVE
) {
338 data
->rxstate
= WBCIR_RXSTATE_ACTIVE
;
339 led_trigger_event(data
->rxtrigger
, LED_FULL
);
342 if (idle
&& data
->rxstate
!= WBCIR_RXSTATE_INACTIVE
)
343 /* Tell hardware to go idle by setting RXINACTIVE */
344 outb(WBCIR_RX_DISABLE
, data
->sbase
+ WBCIR_REG_SP3_ASCR
);
348 wbcir_irq_rx(struct wbcir_data
*data
, struct pnp_dev
*device
)
351 DEFINE_IR_RAW_EVENT(rawir
);
353 /* Since RXHDLEV is set, at least 8 bytes are in the FIFO */
354 while (inb(data
->sbase
+ WBCIR_REG_SP3_LSR
) & WBCIR_RX_AVAIL
) {
355 irdata
= inb(data
->sbase
+ WBCIR_REG_SP3_RXDATA
);
356 if (data
->rxstate
== WBCIR_RXSTATE_ERROR
)
358 rawir
.pulse
= irdata
& 0x80 ? false : true;
359 rawir
.duration
= US_TO_NS((irdata
& 0x7F) * 10);
360 ir_raw_event_store_with_filter(data
->dev
, &rawir
);
363 /* Check if we should go idle */
364 if (data
->dev
->idle
) {
365 led_trigger_event(data
->rxtrigger
, LED_OFF
);
366 data
->rxstate
= WBCIR_RXSTATE_INACTIVE
;
369 ir_raw_event_handle(data
->dev
);
373 wbcir_irq_tx(struct wbcir_data
*data
)
383 switch (data
->txstate
) {
384 case WBCIR_TXSTATE_INACTIVE
:
387 led_trigger_event(data
->txtrigger
, LED_FULL
);
389 case WBCIR_TXSTATE_ACTIVE
:
390 /* TX FIFO low (3 bytes or less) */
393 case WBCIR_TXSTATE_ERROR
:
401 * TX data is run-length coded in bytes: YXXXXXXX
402 * Y = space (1) or pulse (0)
403 * X = duration, encoded as (X + 1) * 10us (i.e 10 to 1280 us)
405 for (used
= 0; used
< space
&& data
->txoff
!= data
->txlen
; used
++) {
406 if (data
->txbuf
[data
->txoff
] == 0) {
410 byte
= min((u32
)0x80, data
->txbuf
[data
->txoff
]);
411 data
->txbuf
[data
->txoff
] -= byte
;
413 byte
|= (data
->txoff
% 2 ? 0x80 : 0x00); /* pulse/space */
417 while (data
->txbuf
[data
->txoff
] == 0 && data
->txoff
!= data
->txlen
)
422 if (data
->txstate
== WBCIR_TXSTATE_ERROR
)
423 /* Clear TX underrun bit */
424 outb(WBCIR_TX_UNDERRUN
, data
->sbase
+ WBCIR_REG_SP3_ASCR
);
426 data
->txstate
= WBCIR_TXSTATE_DONE
;
427 wbcir_set_irqmask(data
, WBCIR_IRQ_RX
| WBCIR_IRQ_ERR
);
428 led_trigger_event(data
->txtrigger
, LED_OFF
);
429 wake_up(&data
->txwaitq
);
430 } else if (data
->txoff
== data
->txlen
) {
431 /* At the end of transmission, tell the hw before last byte */
432 outsb(data
->sbase
+ WBCIR_REG_SP3_TXDATA
, bytes
, used
- 1);
433 outb(WBCIR_TX_EOT
, data
->sbase
+ WBCIR_REG_SP3_ASCR
);
434 outb(bytes
[used
- 1], data
->sbase
+ WBCIR_REG_SP3_TXDATA
);
435 wbcir_set_irqmask(data
, WBCIR_IRQ_RX
| WBCIR_IRQ_ERR
|
438 /* More data to follow... */
439 outsb(data
->sbase
+ WBCIR_REG_SP3_RXDATA
, bytes
, used
);
440 if (data
->txstate
== WBCIR_TXSTATE_INACTIVE
) {
441 wbcir_set_irqmask(data
, WBCIR_IRQ_RX
| WBCIR_IRQ_ERR
|
443 data
->txstate
= WBCIR_TXSTATE_ACTIVE
;
449 wbcir_irq_handler(int irqno
, void *cookie
)
451 struct pnp_dev
*device
= cookie
;
452 struct wbcir_data
*data
= pnp_get_drvdata(device
);
456 spin_lock_irqsave(&data
->spinlock
, flags
);
457 wbcir_select_bank(data
, WBCIR_BANK_0
);
458 status
= inb(data
->sbase
+ WBCIR_REG_SP3_EIR
);
459 status
&= data
->irqmask
;
462 spin_unlock_irqrestore(&data
->spinlock
, flags
);
466 if (status
& WBCIR_IRQ_ERR
) {
467 /* RX overflow? (read clears bit) */
468 if (inb(data
->sbase
+ WBCIR_REG_SP3_LSR
) & WBCIR_RX_OVERRUN
) {
469 data
->rxstate
= WBCIR_RXSTATE_ERROR
;
470 ir_raw_event_reset(data
->dev
);
474 if (inb(data
->sbase
+ WBCIR_REG_SP3_ASCR
) & WBCIR_TX_UNDERRUN
)
475 data
->txstate
= WBCIR_TXSTATE_ERROR
;
478 if (status
& WBCIR_IRQ_RX
)
479 wbcir_irq_rx(data
, device
);
481 if (status
& (WBCIR_IRQ_TX_LOW
| WBCIR_IRQ_TX_EMPTY
))
484 spin_unlock_irqrestore(&data
->spinlock
, flags
);
488 /*****************************************************************************
490 * RC-CORE INTERFACE FUNCTIONS
492 *****************************************************************************/
495 wbcir_txcarrier(struct rc_dev
*dev
, u32 carrier
)
497 struct wbcir_data
*data
= dev
->priv
;
502 freq
= DIV_ROUND_CLOSEST(carrier
, 1000);
503 if (freq
< 30 || freq
> 60)
523 spin_lock_irqsave(&data
->spinlock
, flags
);
524 if (data
->txstate
!= WBCIR_TXSTATE_INACTIVE
) {
525 spin_unlock_irqrestore(&data
->spinlock
, flags
);
529 if (data
->txcarrier
!= freq
) {
530 wbcir_select_bank(data
, WBCIR_BANK_7
);
531 wbcir_set_bits(data
->sbase
+ WBCIR_REG_SP3_IRTXMC
, val
, 0x1F);
532 data
->txcarrier
= freq
;
535 spin_unlock_irqrestore(&data
->spinlock
, flags
);
540 wbcir_txmask(struct rc_dev
*dev
, u32 mask
)
542 struct wbcir_data
*data
= dev
->priv
;
546 /* Four outputs, only one output can be enabled at a time */
564 spin_lock_irqsave(&data
->spinlock
, flags
);
565 if (data
->txstate
!= WBCIR_TXSTATE_INACTIVE
) {
566 spin_unlock_irqrestore(&data
->spinlock
, flags
);
570 if (data
->txmask
!= mask
) {
571 wbcir_set_bits(data
->ebase
+ WBCIR_REG_ECEIR_CTS
, val
, 0x0c);
575 spin_unlock_irqrestore(&data
->spinlock
, flags
);
580 wbcir_tx(struct rc_dev
*dev
, int *buf
, u32 bufsize
)
582 struct wbcir_data
*data
= dev
->priv
;
587 /* bufsize has been sanity checked by the caller */
588 count
= bufsize
/ sizeof(int);
590 /* Not sure if this is possible, but better safe than sorry */
591 spin_lock_irqsave(&data
->spinlock
, flags
);
592 if (data
->txstate
!= WBCIR_TXSTATE_INACTIVE
) {
593 spin_unlock_irqrestore(&data
->spinlock
, flags
);
597 /* Convert values to multiples of 10us */
598 for (i
= 0; i
< count
; i
++)
599 buf
[i
] = DIV_ROUND_CLOSEST(buf
[i
], 10);
601 /* Fill the TX fifo once, the irq handler will do the rest */
607 /* Wait for the TX to complete */
608 while (data
->txstate
== WBCIR_TXSTATE_ACTIVE
) {
609 spin_unlock_irqrestore(&data
->spinlock
, flags
);
610 wait_event(data
->txwaitq
, data
->txstate
!= WBCIR_TXSTATE_ACTIVE
);
611 spin_lock_irqsave(&data
->spinlock
, flags
);
615 if (data
->txstate
== WBCIR_TXSTATE_ERROR
)
617 data
->txstate
= WBCIR_TXSTATE_INACTIVE
;
619 spin_unlock_irqrestore(&data
->spinlock
, flags
);
624 /*****************************************************************************
626 * SETUP/INIT/SUSPEND/RESUME FUNCTIONS
628 *****************************************************************************/
631 wbcir_shutdown(struct pnp_dev
*device
)
633 struct device
*dev
= &device
->dev
;
634 struct wbcir_data
*data
= pnp_get_drvdata(device
);
641 memset(match
, 0, sizeof(match
));
642 memset(mask
, 0, sizeof(mask
));
644 if (wake_sc
== INVALID_SCANCODE
|| !device_may_wakeup(dev
)) {
650 case IR_PROTOCOL_RC5
:
651 if (wake_sc
> 0xFFF) {
653 dev_err(dev
, "RC5 - Invalid wake scancode\n");
657 /* Mask = 13 bits, ex toggle */
661 match
[0] = (wake_sc
& 0x003F); /* 6 command bits */
662 match
[0] |= (wake_sc
& 0x0180) >> 1; /* 2 address bits */
663 match
[1] = (wake_sc
& 0x0E00) >> 9; /* 3 address bits */
664 if (!(wake_sc
& 0x0040)) /* 2nd start bit */
669 case IR_PROTOCOL_NEC
:
670 if (wake_sc
> 0xFFFFFF) {
672 dev_err(dev
, "NEC - Invalid wake scancode\n");
676 mask
[0] = mask
[1] = mask
[2] = mask
[3] = 0xFF;
678 match
[1] = bitrev8((wake_sc
& 0xFF));
679 match
[0] = ~match
[1];
681 match
[3] = bitrev8((wake_sc
& 0xFF00) >> 8);
682 if (wake_sc
> 0xFFFF)
683 match
[2] = bitrev8((wake_sc
& 0xFF0000) >> 16);
685 match
[2] = ~match
[3];
689 case IR_PROTOCOL_RC6
:
691 if (wake_rc6mode
== 0) {
692 if (wake_sc
> 0xFFFF) {
694 dev_err(dev
, "RC6 - Invalid wake scancode\n");
699 match
[0] = wbcir_to_rc6cells(wake_sc
>> 0);
701 match
[1] = wbcir_to_rc6cells(wake_sc
>> 4);
705 match
[2] = wbcir_to_rc6cells(wake_sc
>> 8);
707 match
[3] = wbcir_to_rc6cells(wake_sc
>> 12);
711 match
[4] = 0x50; /* mode1 = mode0 = 0, ignore toggle */
713 match
[5] = 0x09; /* start bit = 1, mode2 = 0 */
718 } else if (wake_rc6mode
== 6) {
722 match
[i
] = wbcir_to_rc6cells(wake_sc
>> 0);
724 match
[i
] = wbcir_to_rc6cells(wake_sc
>> 4);
727 /* Address + Toggle */
728 match
[i
] = wbcir_to_rc6cells(wake_sc
>> 8);
730 match
[i
] = wbcir_to_rc6cells(wake_sc
>> 12);
733 /* Customer bits 7 - 0 */
734 match
[i
] = wbcir_to_rc6cells(wake_sc
>> 16);
736 match
[i
] = wbcir_to_rc6cells(wake_sc
>> 20);
739 if (wake_sc
& 0x80000000) {
740 /* Customer range bit and bits 15 - 8 */
741 match
[i
] = wbcir_to_rc6cells(wake_sc
>> 24);
743 match
[i
] = wbcir_to_rc6cells(wake_sc
>> 28);
746 } else if (wake_sc
<= 0x007FFFFF) {
750 dev_err(dev
, "RC6 - Invalid wake scancode\n");
755 match
[i
] = 0x93; /* mode1 = mode0 = 1, submode = 0 */
757 match
[i
] = 0x0A; /* start bit = 1, mode2 = 1 */
762 dev_err(dev
, "RC6 - Invalid wake mode\n");
774 /* Set compare and compare mask */
775 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_INDEX
,
776 WBCIR_REGSEL_COMPARE
| WBCIR_REG_ADDR0
,
778 outsb(data
->wbase
+ WBCIR_REG_WCEIR_DATA
, match
, 11);
779 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_INDEX
,
780 WBCIR_REGSEL_MASK
| WBCIR_REG_ADDR0
,
782 outsb(data
->wbase
+ WBCIR_REG_WCEIR_DATA
, mask
, 11);
784 /* RC6 Compare String Len */
785 outb(rc6_csl
, data
->wbase
+ WBCIR_REG_WCEIR_CSL
);
787 /* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
788 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_STS
, 0x17, 0x17);
790 /* Clear BUFF_EN, Clear END_EN, Set MATCH_EN */
791 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_EV_EN
, 0x01, 0x07);
794 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_CTL
, 0x01, 0x01);
797 /* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
798 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_EV_EN
, 0x00, 0x07);
801 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_CTL
, 0x00, 0x01);
805 * ACPI will set the HW disable bit for SP3 which means that the
806 * output signals are left in an undefined state which may cause
807 * spurious interrupts which we need to ignore until the hardware
810 wbcir_set_irqmask(data
, WBCIR_IRQ_NONE
);
811 disable_irq(data
->irq
);
814 led_trigger_event(data
->rxtrigger
, LED_OFF
);
815 led_trigger_event(data
->txtrigger
, LED_OFF
);
819 wbcir_suspend(struct pnp_dev
*device
, pm_message_t state
)
821 wbcir_shutdown(device
);
826 wbcir_init_hw(struct wbcir_data
*data
)
830 /* Disable interrupts */
831 wbcir_set_irqmask(data
, WBCIR_IRQ_NONE
);
833 /* Set PROT_SEL, RX_INV, Clear CEIR_EN (needed for the led) */
837 outb(tmp
, data
->wbase
+ WBCIR_REG_WCEIR_CTL
);
839 /* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
840 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_STS
, 0x17, 0x17);
842 /* Clear BUFF_EN, Clear END_EN, Clear MATCH_EN */
843 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_EV_EN
, 0x00, 0x07);
845 /* Set RC5 cell time to correspond to 36 kHz */
846 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_CFG1
, 0x4A, 0x7F);
850 outb(0x04, data
->ebase
+ WBCIR_REG_ECEIR_CCTL
);
852 outb(0x00, data
->ebase
+ WBCIR_REG_ECEIR_CCTL
);
855 * Clear IR LED, set SP3 clock to 24Mhz, set TX mask to IRTX1,
856 * set SP3_IRRX_SW to binary 01, helpfully not documented
858 outb(0x10, data
->ebase
+ WBCIR_REG_ECEIR_CTS
);
861 /* Enable extended mode */
862 wbcir_select_bank(data
, WBCIR_BANK_2
);
863 outb(WBCIR_EXT_ENABLE
, data
->sbase
+ WBCIR_REG_SP3_EXCR1
);
866 * Configure baud generator, IR data will be sampled at
867 * a bitrate of: (24Mhz * prescaler) / (divisor * 16).
869 * The ECIR registers include a flag to change the
870 * 24Mhz clock freq to 48Mhz.
872 * It's not documented in the specs, but fifo levels
873 * other than 16 seems to be unsupported.
876 /* prescaler 1.0, tx/rx fifo lvl 16 */
877 outb(0x30, data
->sbase
+ WBCIR_REG_SP3_EXCR2
);
879 /* Set baud divisor to generate one byte per bit/cell */
881 case IR_PROTOCOL_RC5
:
882 outb(0xA7, data
->sbase
+ WBCIR_REG_SP3_BGDL
);
884 case IR_PROTOCOL_RC6
:
885 outb(0x53, data
->sbase
+ WBCIR_REG_SP3_BGDL
);
887 case IR_PROTOCOL_NEC
:
888 outb(0x69, data
->sbase
+ WBCIR_REG_SP3_BGDL
);
891 outb(0x00, data
->sbase
+ WBCIR_REG_SP3_BGDH
);
894 wbcir_select_bank(data
, WBCIR_BANK_0
);
895 outb(0xC0, data
->sbase
+ WBCIR_REG_SP3_MCR
);
896 inb(data
->sbase
+ WBCIR_REG_SP3_LSR
); /* Clear LSR */
897 inb(data
->sbase
+ WBCIR_REG_SP3_MSR
); /* Clear MSR */
899 /* Disable RX demod, run-length encoding/decoding, set freq span */
900 wbcir_select_bank(data
, WBCIR_BANK_7
);
901 outb(0x10, data
->sbase
+ WBCIR_REG_SP3_RCCFG
);
904 wbcir_select_bank(data
, WBCIR_BANK_4
);
905 outb(0x00, data
->sbase
+ WBCIR_REG_SP3_IRCR1
);
907 /* Disable MSR interrupt, clear AUX_IRX, mask RX during TX? */
908 wbcir_select_bank(data
, WBCIR_BANK_5
);
909 outb(txandrx
? 0x03 : 0x02, data
->sbase
+ WBCIR_REG_SP3_IRCR2
);
912 wbcir_select_bank(data
, WBCIR_BANK_6
);
913 outb(0x20, data
->sbase
+ WBCIR_REG_SP3_IRCR3
);
915 /* Set RX demodulation freq, not really used */
916 wbcir_select_bank(data
, WBCIR_BANK_7
);
917 outb(0xF2, data
->sbase
+ WBCIR_REG_SP3_IRRXDC
);
919 /* Set TX modulation, 36kHz, 7us pulse width */
920 outb(0x69, data
->sbase
+ WBCIR_REG_SP3_IRTXMC
);
921 data
->txcarrier
= 36000;
923 /* Set invert and pin direction */
925 outb(0x10, data
->sbase
+ WBCIR_REG_SP3_IRCFG4
);
927 outb(0x00, data
->sbase
+ WBCIR_REG_SP3_IRCFG4
);
929 /* Set FIFO thresholds (RX = 8, TX = 3), reset RX/TX */
930 wbcir_select_bank(data
, WBCIR_BANK_0
);
931 outb(0x97, data
->sbase
+ WBCIR_REG_SP3_FCR
);
933 /* Clear AUX status bits */
934 outb(0xE0, data
->sbase
+ WBCIR_REG_SP3_ASCR
);
937 data
->rxstate
= WBCIR_RXSTATE_INACTIVE
;
938 data
->rxev
.duration
= 0;
939 ir_raw_event_reset(data
->dev
);
940 ir_raw_event_handle(data
->dev
);
943 * Check TX state, if we did a suspend/resume cycle while TX was
944 * active, we will have a process waiting in txwaitq.
946 if (data
->txstate
== WBCIR_TXSTATE_ACTIVE
) {
947 data
->txstate
= WBCIR_TXSTATE_ERROR
;
948 wake_up(&data
->txwaitq
);
951 /* Enable interrupts */
952 wbcir_set_irqmask(data
, WBCIR_IRQ_RX
| WBCIR_IRQ_ERR
);
956 wbcir_resume(struct pnp_dev
*device
)
958 struct wbcir_data
*data
= pnp_get_drvdata(device
);
961 enable_irq(data
->irq
);
967 wbcir_probe(struct pnp_dev
*device
, const struct pnp_device_id
*dev_id
)
969 struct device
*dev
= &device
->dev
;
970 struct wbcir_data
*data
;
973 if (!(pnp_port_len(device
, 0) == EHFUNC_IOMEM_LEN
&&
974 pnp_port_len(device
, 1) == WAKEUP_IOMEM_LEN
&&
975 pnp_port_len(device
, 2) == SP_IOMEM_LEN
)) {
976 dev_err(dev
, "Invalid resources\n");
980 data
= kzalloc(sizeof(*data
), GFP_KERNEL
);
986 pnp_set_drvdata(device
, data
);
988 spin_lock_init(&data
->spinlock
);
989 init_waitqueue_head(&data
->txwaitq
);
990 data
->ebase
= pnp_port_start(device
, 0);
991 data
->wbase
= pnp_port_start(device
, 1);
992 data
->sbase
= pnp_port_start(device
, 2);
993 data
->irq
= pnp_irq(device
, 0);
995 if (data
->wbase
== 0 || data
->ebase
== 0 ||
996 data
->sbase
== 0 || data
->irq
== 0) {
998 dev_err(dev
, "Invalid resources\n");
1002 dev_dbg(&device
->dev
, "Found device "
1003 "(w: 0x%lX, e: 0x%lX, s: 0x%lX, i: %u)\n",
1004 data
->wbase
, data
->ebase
, data
->sbase
, data
->irq
);
1006 if (!request_region(data
->wbase
, WAKEUP_IOMEM_LEN
, DRVNAME
)) {
1007 dev_err(dev
, "Region 0x%lx-0x%lx already in use!\n",
1008 data
->wbase
, data
->wbase
+ WAKEUP_IOMEM_LEN
- 1);
1010 goto exit_free_data
;
1013 if (!request_region(data
->ebase
, EHFUNC_IOMEM_LEN
, DRVNAME
)) {
1014 dev_err(dev
, "Region 0x%lx-0x%lx already in use!\n",
1015 data
->ebase
, data
->ebase
+ EHFUNC_IOMEM_LEN
- 1);
1017 goto exit_release_wbase
;
1020 if (!request_region(data
->sbase
, SP_IOMEM_LEN
, DRVNAME
)) {
1021 dev_err(dev
, "Region 0x%lx-0x%lx already in use!\n",
1022 data
->sbase
, data
->sbase
+ SP_IOMEM_LEN
- 1);
1024 goto exit_release_ebase
;
1027 err
= request_irq(data
->irq
, wbcir_irq_handler
,
1028 IRQF_DISABLED
, DRVNAME
, device
);
1030 dev_err(dev
, "Failed to claim IRQ %u\n", data
->irq
);
1032 goto exit_release_sbase
;
1035 led_trigger_register_simple("cir-tx", &data
->txtrigger
);
1036 if (!data
->txtrigger
) {
1041 led_trigger_register_simple("cir-rx", &data
->rxtrigger
);
1042 if (!data
->rxtrigger
) {
1044 goto exit_unregister_txtrigger
;
1047 data
->led
.name
= "cir::activity";
1048 data
->led
.default_trigger
= "cir-rx";
1049 data
->led
.brightness_set
= wbcir_led_brightness_set
;
1050 data
->led
.brightness_get
= wbcir_led_brightness_get
;
1051 err
= led_classdev_register(&device
->dev
, &data
->led
);
1053 goto exit_unregister_rxtrigger
;
1055 data
->dev
= rc_allocate_device();
1058 goto exit_unregister_led
;
1061 data
->dev
->driver_name
= WBCIR_NAME
;
1062 data
->dev
->input_name
= WBCIR_NAME
;
1063 data
->dev
->input_phys
= "wbcir/cir0";
1064 data
->dev
->input_id
.bustype
= BUS_HOST
;
1065 data
->dev
->input_id
.vendor
= PCI_VENDOR_ID_WINBOND
;
1066 data
->dev
->input_id
.product
= WBCIR_ID_FAMILY
;
1067 data
->dev
->input_id
.version
= WBCIR_ID_CHIP
;
1068 data
->dev
->map_name
= RC_MAP_RC6_MCE
;
1069 data
->dev
->s_idle
= wbcir_idle_rx
;
1070 data
->dev
->s_tx_mask
= wbcir_txmask
;
1071 data
->dev
->s_tx_carrier
= wbcir_txcarrier
;
1072 data
->dev
->tx_ir
= wbcir_tx
;
1073 data
->dev
->priv
= data
;
1074 data
->dev
->dev
.parent
= &device
->dev
;
1076 err
= rc_register_device(data
->dev
);
1080 device_init_wakeup(&device
->dev
, 1);
1082 wbcir_init_hw(data
);
1087 rc_free_device(data
->dev
);
1088 exit_unregister_led
:
1089 led_classdev_unregister(&data
->led
);
1090 exit_unregister_rxtrigger
:
1091 led_trigger_unregister_simple(data
->rxtrigger
);
1092 exit_unregister_txtrigger
:
1093 led_trigger_unregister_simple(data
->txtrigger
);
1095 free_irq(data
->irq
, device
);
1097 release_region(data
->sbase
, SP_IOMEM_LEN
);
1099 release_region(data
->ebase
, EHFUNC_IOMEM_LEN
);
1101 release_region(data
->wbase
, WAKEUP_IOMEM_LEN
);
1104 pnp_set_drvdata(device
, NULL
);
1109 static void __devexit
1110 wbcir_remove(struct pnp_dev
*device
)
1112 struct wbcir_data
*data
= pnp_get_drvdata(device
);
1114 /* Disable interrupts */
1115 wbcir_set_irqmask(data
, WBCIR_IRQ_NONE
);
1116 free_irq(data
->irq
, device
);
1118 /* Clear status bits NEC_REP, BUFF, MSG_END, MATCH */
1119 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_STS
, 0x17, 0x17);
1122 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_CTL
, 0x00, 0x01);
1124 /* Clear BUFF_EN, END_EN, MATCH_EN */
1125 wbcir_set_bits(data
->wbase
+ WBCIR_REG_WCEIR_EV_EN
, 0x00, 0x07);
1127 rc_unregister_device(data
->dev
);
1129 led_trigger_unregister_simple(data
->rxtrigger
);
1130 led_trigger_unregister_simple(data
->txtrigger
);
1131 led_classdev_unregister(&data
->led
);
1133 /* This is ok since &data->led isn't actually used */
1134 wbcir_led_brightness_set(&data
->led
, LED_OFF
);
1136 release_region(data
->wbase
, WAKEUP_IOMEM_LEN
);
1137 release_region(data
->ebase
, EHFUNC_IOMEM_LEN
);
1138 release_region(data
->sbase
, SP_IOMEM_LEN
);
1142 pnp_set_drvdata(device
, NULL
);
1145 static const struct pnp_device_id wbcir_ids
[] = {
1149 MODULE_DEVICE_TABLE(pnp
, wbcir_ids
);
1151 static struct pnp_driver wbcir_driver
= {
1153 .id_table
= wbcir_ids
,
1154 .probe
= wbcir_probe
,
1155 .remove
= __devexit_p(wbcir_remove
),
1156 .suspend
= wbcir_suspend
,
1157 .resume
= wbcir_resume
,
1158 .shutdown
= wbcir_shutdown
1167 case IR_PROTOCOL_RC5
:
1168 case IR_PROTOCOL_NEC
:
1169 case IR_PROTOCOL_RC6
:
1172 printk(KERN_ERR DRVNAME
": Invalid power-on protocol\n");
1175 ret
= pnp_register_driver(&wbcir_driver
);
1177 printk(KERN_ERR DRVNAME
": Unable to register driver\n");
1185 pnp_unregister_driver(&wbcir_driver
);
1188 module_init(wbcir_init
);
1189 module_exit(wbcir_exit
);
1191 MODULE_AUTHOR("David Härdeman <david@hardeman.nu>");
1192 MODULE_DESCRIPTION("Winbond SuperI/O Consumer IR Driver");
1193 MODULE_LICENSE("GPL");