Commit | Line | Data |
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6fa3eb70 S |
1 | #include <linux/module.h> |
2 | #include <linux/init.h> | |
3 | #include <linux/i2c.h> | |
4 | #include <linux/platform_device.h> | |
5 | #include <linux/dma-mapping.h> | |
6 | #include <linux/slab.h> | |
7 | #include <linux/errno.h> | |
8 | #include <linux/err.h> | |
9 | #include <mach/mt_pm_ldo.h> | |
10 | #include <mt_i2c.h> | |
11 | ||
12 | static char data_buffer[256 * 4]; | |
13 | ||
14 | static ssize_t show_config(struct device *dev, struct device_attribute *attr, char *buff) | |
15 | { | |
16 | int len = strlen(data_buffer); | |
17 | memcpy(buff,data_buffer,len); | |
18 | printk("Return Value:%s\n",data_buffer); | |
19 | return len; | |
20 | } | |
21 | ||
22 | static int pows(int x, int y) | |
23 | { | |
24 | int result = 1; | |
25 | while (y--) result *=x; | |
26 | return result; | |
27 | } | |
28 | ||
29 | int string2hex(const char * buffer, int cnt){ | |
30 | int c = 0; | |
31 | char t = 0; | |
32 | int count = cnt; | |
33 | while (count--){ | |
34 | t = *(buffer + cnt - count - 1); | |
35 | if ( t >= 'A' && t <= 'F') { | |
36 | c += ((t - 'A') + 10 ) * pows(16,count); | |
37 | } else if (t >= '0' && t <= '9'){ | |
38 | c += (t - '0') * pows(16,count); | |
39 | } else { | |
40 | c = -1; | |
41 | } | |
42 | } | |
43 | return c; | |
44 | } | |
45 | ||
46 | char * get_hexbuffer(char *data_buffer, char *hex_buffer) | |
47 | { | |
48 | char * ptr = data_buffer; | |
49 | int index = 0; | |
50 | while (*ptr && *++ptr) { | |
51 | *(hex_buffer + index++) = string2hex(ptr-1, 2); | |
52 | ptr++; | |
53 | } | |
54 | *(hex_buffer + index) = 0; | |
55 | return hex_buffer; | |
56 | } | |
57 | ||
58 | int i2c_trans_data(int bus_id, int address, char *buf, int count, unsigned int ext_flag,int timing) | |
59 | { | |
60 | int ret; | |
61 | ||
62 | struct i2c_msg msg; | |
63 | struct i2c_adapter *adap; | |
64 | adap = i2c_get_adapter(bus_id); | |
65 | if (!adap) return -1; | |
66 | ||
67 | msg.addr = address; | |
68 | msg.flags = ((ext_flag & 0x80000000)?I2C_M_RD:0); | |
69 | msg.timing = timing; | |
70 | msg.len = count; | |
71 | msg.buf = (char *)buf; | |
72 | msg.ext_flag = ext_flag & 0x7FFFFFFF; | |
73 | // msg.ext_flag = (ext_flag & 0x7FFF00FF); | |
74 | // msg.addr |= ext_flag & 0x0000FF00; | |
75 | ret = i2c_transfer(adap, &msg, 1); | |
76 | ||
77 | /* If everything went ok (i.e. 1 msg transmitted), return #bytes | |
78 | transmitted, else error code. */ | |
79 | i2c_put_adapter(adap); | |
80 | return (ret == 1) ? count : ret; | |
81 | } | |
82 | int mt_i2c_test(int id, int addr) | |
83 | { | |
84 | int ret = 0; | |
85 | unsigned long flag; | |
86 | unsigned char buffer[]={0x55}; | |
87 | if(id >3) | |
88 | flag = I2C_DIRECTION_FLAG; | |
89 | ||
90 | flag |= 0x80000000; | |
91 | ret = i2c_trans_data(id, addr,buffer,1,flag,200); | |
92 | return ret; | |
93 | } | |
94 | EXPORT_SYMBOL(mt_i2c_test); | |
95 | ||
96 | //extern mt_i2c ; | |
97 | static int i2c_test_reg(int bus_id,int val) | |
98 | { | |
99 | int ret=0; | |
100 | struct i2c_adapter *adap; | |
101 | mt_i2c *i2c; | |
102 | adap = i2c_get_adapter(bus_id); | |
103 | if (!adap) return -1; | |
104 | i2c = container_of(adap,mt_i2c,adap); | |
105 | printk("I2C%d base address %8x\n",bus_id,i2c->base); | |
106 | //write i2c writable register with 0 | |
107 | i2c_writel(i2c,OFFSET_SLAVE_ADDR,val); | |
108 | i2c_writel(i2c,OFFSET_INTR_MASK,val); | |
109 | i2c_writel(i2c,OFFSET_INTR_STAT,val); | |
110 | i2c_writel(i2c,OFFSET_CONTROL,val); | |
111 | i2c_writel(i2c,OFFSET_TRANSFER_LEN,val); | |
112 | i2c_writel(i2c,OFFSET_TRANSAC_LEN,val); | |
113 | i2c_writel(i2c,OFFSET_DELAY_LEN,val); | |
114 | i2c_writel(i2c,OFFSET_TIMING,val); | |
115 | i2c_writel(i2c,OFFSET_EXT_CONF,val); | |
116 | i2c_writel(i2c,OFFSET_IO_CONFIG,val); | |
117 | i2c_writel(i2c,OFFSET_HS,val); | |
118 | /* If everything went ok (i.e. 1 msg transmitted), return #bytes | |
119 | transmitted, else error code. */ | |
120 | i2c_put_adapter(adap); | |
121 | return ret; | |
122 | } | |
123 | static int i2c_soft_reset(int bus_id) | |
124 | { | |
125 | int ret=0; | |
126 | struct i2c_adapter *adap; | |
127 | mt_i2c *i2c; | |
128 | adap = i2c_get_adapter(bus_id); | |
129 | if (!adap) return -1; | |
130 | i2c = container_of(adap,mt_i2c,adap); | |
131 | printk("I2C%d base address %8x\n",bus_id,i2c->base); | |
132 | //write i2c writable register with 0 | |
133 | i2c_writel(i2c,OFFSET_SOFTRESET,1); | |
134 | /* If everything went ok (i.e. 1 msg transmitted), return #bytes | |
135 | transmitted, else error code. */ | |
136 | i2c_put_adapter(adap); | |
137 | return ret; | |
138 | } | |
139 | static int i2c_ext_conf_test(int bus_id,int val) | |
140 | { | |
141 | int ret=0; | |
142 | struct i2c_adapter *adap; | |
143 | mt_i2c *i2c; | |
144 | adap = i2c_get_adapter(bus_id); | |
145 | if (!adap) return -1; | |
146 | i2c = container_of(adap,mt_i2c,adap); | |
147 | printk("I2C%d base address %8x\n",bus_id,i2c->base); | |
148 | //write i2c writable register with 0 | |
149 | i2c_writel(i2c,OFFSET_EXT_CONF,val); | |
150 | printk("EXT_CONF 0x%x",i2c_readl(i2c,OFFSET_EXT_CONF)); | |
151 | /* If everything went ok (i.e. 1 msg transmitted), return #bytes | |
152 | transmitted, else error code. */ | |
153 | i2c_put_adapter(adap); | |
154 | return ret; | |
155 | } | |
156 | static void hex2string(unsigned char * in, unsigned char * out, int length) | |
157 | { | |
158 | unsigned char * ptr = in; | |
159 | unsigned char * ptrout = out; | |
160 | unsigned char t; | |
161 | ||
162 | while ( length-- ) { | |
163 | t = (*ptr & 0xF0) >> 4 ; | |
164 | if ( t < 10 ) *ptrout = t + '0'; | |
165 | else *ptrout = t + 'A' - 10; | |
166 | ||
167 | ptrout++; | |
168 | ||
169 | t = (*ptr & 0x0F); | |
170 | if ( t < 10 ) *ptrout = t + '0'; | |
171 | else *ptrout = t + 'A' - 10; | |
172 | ||
173 | ptr++; | |
174 | ptrout++; | |
175 | } | |
176 | *ptrout = 0; | |
177 | } | |
178 | ||
179 | static ssize_t set_config(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) | |
180 | { | |
181 | int bus_id; | |
182 | int address; | |
183 | int operation; | |
184 | int trans_mode; | |
185 | int trans_stop; | |
186 | int speed_mode; | |
187 | int pushpull_mode; | |
188 | int query_mode; | |
189 | int timing; | |
190 | int trans_num; | |
191 | int trans_auxlen; | |
192 | int dir=0; | |
193 | ||
194 | int number = 0; | |
195 | int length = 0; | |
196 | unsigned int ext_flag = 0; | |
197 | dma_addr_t dma_addr = 0; | |
198 | void * vir_addr = NULL; | |
199 | //int status; | |
200 | int ret = 0; | |
201 | ||
202 | unsigned char tmpbuffer[128]; | |
203 | printk("%s\n", buf); | |
204 | //if ( sscanf(buf, "%d %d %d %d %d %d %d %d %d %d %d %d %s", &bus_id, &address, &operation, &trans_mode, &trans_stop, &speed_mode, &pushpull_mode, &query_mode, &timing, &trans_num, &trans_auxlen,&dir, data_buffer) ) { | |
4b9e9796 | 205 | if ( sscanf(buf, "%d %x %d %d %d %d %d %d %d %d %d %1023s", &bus_id, &address, &operation, &trans_mode, &trans_stop, &speed_mode, &pushpull_mode, &query_mode, &timing, &trans_num, &trans_auxlen,data_buffer) ) { |
6fa3eb70 S |
206 | if((address != 0)&&(operation<=2)){ |
207 | length = strlen(data_buffer); | |
208 | if (operation == 0){ | |
209 | ext_flag |= I2C_WR_FLAG; | |
210 | number = (trans_auxlen << 8 ) | (length >> 1); | |
211 | } else if (operation == 1) { | |
212 | ext_flag |= 0x80000000; | |
213 | number = (trans_num << 8 ) | (length >> 1); | |
214 | } else if (operation == 2) { | |
215 | ext_flag &= 0x7FFFFFFF; | |
216 | number = (trans_num << 8 ) | (length >> 1); | |
217 | } else { | |
218 | ||
219 | printk("invalid operation\n"); | |
220 | goto err; | |
221 | } | |
222 | if(dir > 0) | |
223 | ext_flag |= I2C_DIRECTION_FLAG; | |
224 | ||
225 | if (trans_mode == 0){ | |
226 | //default is fifo | |
227 | } else if (trans_mode == 1) { | |
228 | ext_flag |= I2C_DMA_FLAG; | |
229 | } else { | |
230 | ||
231 | printk("invalid trans_mod fifo/dma\n"); | |
232 | goto err; | |
233 | } | |
234 | ||
235 | if (trans_stop == 0) { | |
236 | //default | |
237 | } else if (trans_stop == 1) { | |
238 | ext_flag |= I2C_RS_FLAG; | |
239 | } else { | |
240 | ||
241 | printk("invalid trans_stop\n"); | |
242 | goto err; | |
243 | } | |
244 | ||
245 | if (speed_mode == 0) { | |
246 | timing = 0;//ST mode | |
247 | } else if (speed_mode == 1) { | |
248 | //ext_flag |= I2C_FS_FLAG;//FS MODE | |
249 | } else if (speed_mode == 2) { | |
250 | ext_flag |= I2C_HS_FLAG;//HS mode | |
251 | } else { | |
252 | printk("invalid speed_mode\n"); | |
253 | goto err; | |
254 | } | |
255 | ||
256 | if (pushpull_mode == 0){ | |
257 | //default | |
258 | } else if (pushpull_mode == 1) { | |
259 | ext_flag |= I2C_PUSHPULL_FLAG; | |
260 | } else { | |
261 | ||
262 | printk("invalid pushpull mode\n"); | |
263 | goto err; | |
264 | } | |
265 | ||
266 | if ( query_mode == 0 ){ | |
267 | // | |
268 | } else if (query_mode == 1) { | |
269 | ext_flag |= I2C_POLLING_FLAG; | |
270 | } else { | |
271 | ||
272 | printk("invalid query mode interrupt/polling\n"); | |
273 | goto err; | |
274 | } | |
275 | ||
276 | if (trans_mode == 1) {/*DMA MODE*/ | |
277 | vir_addr = dma_alloc_coherent(NULL, length >> 1, &dma_addr, GFP_KERNEL); | |
278 | if ( vir_addr == NULL ){ | |
279 | ||
280 | printk("alloc dma memory failed\n"); | |
281 | goto err; | |
282 | } | |
283 | } else { | |
284 | vir_addr = kzalloc(length >> 1, GFP_KERNEL); | |
285 | if ( vir_addr == NULL){ | |
286 | ||
287 | printk("alloc virtual memory failed\n"); | |
288 | goto err; | |
289 | } | |
290 | } | |
291 | ||
292 | get_hexbuffer(data_buffer, vir_addr); | |
293 | printk(KERN_ALERT"bus_id:%d,address:%x,count:%x,ext_flag:0x%x,timing:%d\n", bus_id,address,number,ext_flag,timing); | |
294 | printk(KERN_ALERT"data_buffer:%s\n", data_buffer); | |
295 | ||
296 | if ( trans_mode == 1 ){ | |
297 | /*DMA*/ | |
298 | ret = i2c_trans_data(bus_id, address, (void *)dma_addr, number, ext_flag, timing); | |
299 | } else { | |
300 | ret = i2c_trans_data(bus_id, address, vir_addr, number, ext_flag, timing); | |
301 | } | |
302 | ||
303 | //dealing | |
304 | ||
305 | if ( ret >= 0) { | |
306 | ||
307 | if ( operation == 1 ) { | |
308 | hex2string(vir_addr, tmpbuffer, length >> 1); | |
309 | sprintf(data_buffer, "1 %s", tmpbuffer); | |
310 | } else if ( operation == 0 ){ | |
311 | hex2string(vir_addr, tmpbuffer, trans_auxlen); | |
312 | sprintf(data_buffer, "1 %s", tmpbuffer); | |
313 | } else { | |
314 | sprintf(data_buffer, "1 %s", "00"); | |
315 | } | |
316 | printk("Actual return Value:%d %p\n",ret, vir_addr); | |
317 | } else if ( ret < 0 ) { | |
318 | ||
319 | if ( ret == -EINVAL) { | |
320 | sprintf(data_buffer, "0 %s", "Invalid Parameter"); | |
321 | } else if ( ret == -ETIMEDOUT ) { | |
322 | sprintf(data_buffer, "0 %s", "Transfer Timeout"); | |
323 | } else if ( ret == -EREMOTEIO ) { | |
324 | sprintf(data_buffer, "0 %s", "Ack Error"); | |
325 | } else { | |
326 | sprintf(data_buffer, "0 %s", "unknow error"); | |
327 | } | |
328 | printk("Actual return Value:%d %p\n",ret, vir_addr); | |
329 | } | |
330 | ||
331 | if (trans_mode == 1 && vir_addr != NULL) {/*DMA MODE*/ | |
332 | dma_free_coherent(NULL, length >> 1, vir_addr, dma_addr); | |
333 | } else { | |
334 | if (vir_addr) | |
335 | kfree(vir_addr); | |
336 | } | |
337 | //log for UT test. | |
338 | { | |
339 | struct i2c_adapter *adap= i2c_get_adapter(bus_id); | |
340 | mt_i2c *i2c = i2c_get_adapdata(adap); | |
341 | _i2c_dump_info(i2c); | |
342 | } | |
343 | }else{ | |
344 | struct i2c_adapter *adap= i2c_get_adapter(bus_id); | |
345 | mt_i2c *i2c = i2c_get_adapdata(adap); | |
346 | if(operation == 3){ | |
347 | _i2c_dump_info(i2c); | |
348 | }else if(operation == 4){ | |
349 | i2c_test_reg(bus_id,0); | |
350 | _i2c_dump_info(i2c); | |
351 | i2c_test_reg(bus_id,0xFFFFFFFF); | |
352 | _i2c_dump_info(i2c); | |
353 | }else if(operation == 5){ | |
354 | i2c_ext_conf_test(bus_id,address); | |
355 | }else if(operation == 9){ | |
356 | i2c_soft_reset(bus_id); | |
357 | _i2c_dump_info(i2c); | |
358 | }else if(operation == 6){ | |
359 | if(bus_id == 0){ | |
360 | //I2C0 PINMUX2 power on | |
361 | #ifdef CONFIG_MTK_PMIC_MT6397 | |
362 | #else | |
363 | hwPowerOn(MT65XX_POWER_LDO_VMC1,VOL_DEFAULT,"i2c_pinmux"); | |
364 | hwPowerOn(MT65XX_POWER_LDO_VMCH1,VOL_DEFAULT,"i2c_pinmux"); | |
365 | #endif | |
366 | } | |
367 | ||
368 | }else if(operation == 7){ | |
369 | mt_i2c_test(1,0x50); | |
370 | }else{ | |
371 | dev_err(dev, "i2c debug system: Parameter invalid!\n"); | |
372 | } | |
373 | _i2c_dump_info(i2c); | |
374 | ||
375 | } | |
376 | } else { | |
377 | /*parameter invalid*/ | |
378 | dev_err(dev, "i2c debug system: Parameter invalid!\n"); | |
379 | } | |
380 | ||
381 | return count; | |
382 | err: | |
383 | printk("analyze failed\n"); | |
384 | return -1; | |
385 | } | |
386 | ||
387 | static DEVICE_ATTR(ut, 660, show_config, set_config); | |
388 | ||
389 | static int __init i2c_common_probe(struct platform_device *pdev) | |
390 | { | |
391 | int ret = 0; | |
392 |