Merge branch 'linus' into sched/core
[linux-3.10.git] / drivers / media / video / adv7343.c
1 /*
2  * adv7343 - ADV7343 Video Encoder Driver
3  *
4  * The encoder hardware does not support SECAM.
5  *
6  * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
7  *
8  * This program is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU General Public License as
10  * published by the Free Software Foundation version 2.
11  *
12  * This program is distributed .as is. WITHOUT ANY WARRANTY of any
13  * kind, whether express or implied; without even the implied warranty
14  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  */
17
18 #include <linux/kernel.h>
19 #include <linux/init.h>
20 #include <linux/ctype.h>
21 #include <linux/slab.h>
22 #include <linux/i2c.h>
23 #include <linux/device.h>
24 #include <linux/delay.h>
25 #include <linux/module.h>
26 #include <linux/videodev2.h>
27 #include <linux/uaccess.h>
28
29 #include <media/adv7343.h>
30 #include <media/v4l2-device.h>
31 #include <media/v4l2-chip-ident.h>
32
33 #include "adv7343_regs.h"
34
35 MODULE_DESCRIPTION("ADV7343 video encoder driver");
36 MODULE_LICENSE("GPL");
37
38 static int debug;
39 module_param(debug, int, 0644);
40 MODULE_PARM_DESC(debug, "Debug level 0-1");
41
42 struct adv7343_state {
43         struct v4l2_subdev sd;
44         u8 reg00;
45         u8 reg01;
46         u8 reg02;
47         u8 reg35;
48         u8 reg80;
49         u8 reg82;
50         int bright;
51         int hue;
52         int gain;
53         u32 output;
54         v4l2_std_id std;
55 };
56
57 static inline struct adv7343_state *to_state(struct v4l2_subdev *sd)
58 {
59         return container_of(sd, struct adv7343_state, sd);
60 }
61
62 static inline int adv7343_write(struct v4l2_subdev *sd, u8 reg, u8 value)
63 {
64         struct i2c_client *client = v4l2_get_subdevdata(sd);
65
66         return i2c_smbus_write_byte_data(client, reg, value);
67 }
68
69 static const u8 adv7343_init_reg_val[] = {
70         ADV7343_SOFT_RESET, ADV7343_SOFT_RESET_DEFAULT,
71         ADV7343_POWER_MODE_REG, ADV7343_POWER_MODE_REG_DEFAULT,
72
73         ADV7343_HD_MODE_REG1, ADV7343_HD_MODE_REG1_DEFAULT,
74         ADV7343_HD_MODE_REG2, ADV7343_HD_MODE_REG2_DEFAULT,
75         ADV7343_HD_MODE_REG3, ADV7343_HD_MODE_REG3_DEFAULT,
76         ADV7343_HD_MODE_REG4, ADV7343_HD_MODE_REG4_DEFAULT,
77         ADV7343_HD_MODE_REG5, ADV7343_HD_MODE_REG5_DEFAULT,
78         ADV7343_HD_MODE_REG6, ADV7343_HD_MODE_REG6_DEFAULT,
79         ADV7343_HD_MODE_REG7, ADV7343_HD_MODE_REG7_DEFAULT,
80
81         ADV7343_SD_MODE_REG1, ADV7343_SD_MODE_REG1_DEFAULT,
82         ADV7343_SD_MODE_REG2, ADV7343_SD_MODE_REG2_DEFAULT,
83         ADV7343_SD_MODE_REG3, ADV7343_SD_MODE_REG3_DEFAULT,
84         ADV7343_SD_MODE_REG4, ADV7343_SD_MODE_REG4_DEFAULT,
85         ADV7343_SD_MODE_REG5, ADV7343_SD_MODE_REG5_DEFAULT,
86         ADV7343_SD_MODE_REG6, ADV7343_SD_MODE_REG6_DEFAULT,
87         ADV7343_SD_MODE_REG7, ADV7343_SD_MODE_REG7_DEFAULT,
88         ADV7343_SD_MODE_REG8, ADV7343_SD_MODE_REG8_DEFAULT,
89
90         ADV7343_SD_HUE_REG, ADV7343_SD_HUE_REG_DEFAULT,
91         ADV7343_SD_CGMS_WSS0, ADV7343_SD_CGMS_WSS0_DEFAULT,
92         ADV7343_SD_BRIGHTNESS_WSS, ADV7343_SD_BRIGHTNESS_WSS_DEFAULT,
93 };
94
95 /*
96  *                          2^32
97  * FSC(reg) =  FSC (HZ) * --------
98  *                        27000000
99  */
100 static const struct adv7343_std_info stdinfo[] = {
101         {
102                 /* FSC(Hz) = 3,579,545.45 Hz */
103                 SD_STD_NTSC, 569408542, V4L2_STD_NTSC,
104         }, {
105                 /* FSC(Hz) = 3,575,611.00 Hz */
106                 SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M,
107         }, {
108                 /* FSC(Hz) = 3,582,056.00 */
109                 SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc,
110         }, {
111                 /* FSC(Hz) = 4,433,618.75 Hz */
112                 SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N,
113         }, {
114                 /* FSC(Hz) = 4,433,618.75 Hz */
115                 SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL,
116         }, {
117                 /* FSC(Hz) = 4,433,618.75 Hz */
118                 SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443,
119         }, {
120                 /* FSC(Hz) = 4,433,618.75 Hz */
121                 SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60,
122         },
123 };
124
125 static int adv7343_setstd(struct v4l2_subdev *sd, v4l2_std_id std)
126 {
127         struct adv7343_state *state = to_state(sd);
128         struct adv7343_std_info *std_info;
129         int output_idx, num_std;
130         char *fsc_ptr;
131         u8 reg, val;
132         int err = 0;
133         int i = 0;
134
135         output_idx = state->output;
136
137         std_info = (struct adv7343_std_info *)stdinfo;
138         num_std = ARRAY_SIZE(stdinfo);
139
140         for (i = 0; i < num_std; i++) {
141                 if (std_info[i].stdid & std)
142                         break;
143         }
144
145         if (i == num_std) {
146                 v4l2_dbg(1, debug, sd,
147                                 "Invalid std or std is not supported: %llx\n",
148                                                 (unsigned long long)std);
149                 return -EINVAL;
150         }
151
152         /* Set the standard */
153         val = state->reg80 & (~(SD_STD_MASK));
154         val |= std_info[i].standard_val3;
155         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
156         if (err < 0)
157                 goto setstd_exit;
158
159         state->reg80 = val;
160
161         /* Configure the input mode register */
162         val = state->reg01 & (~((u8) INPUT_MODE_MASK));
163         val |= SD_INPUT_MODE;
164         err = adv7343_write(sd, ADV7343_MODE_SELECT_REG, val);
165         if (err < 0)
166                 goto setstd_exit;
167
168         state->reg01 = val;
169
170         /* Program the sub carrier frequency registers */
171         fsc_ptr = (unsigned char *)&std_info[i].fsc_val;
172         reg = ADV7343_FSC_REG0;
173         for (i = 0; i < 4; i++, reg++, fsc_ptr++) {
174                 err = adv7343_write(sd, reg, *fsc_ptr);
175                 if (err < 0)
176                         goto setstd_exit;
177         }
178
179         val = state->reg80;
180
181         /* Filter settings */
182         if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443))
183                 val &= 0x03;
184         else if (std & ~V4L2_STD_SECAM)
185                 val |= 0x04;
186
187         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
188         if (err < 0)
189                 goto setstd_exit;
190
191         state->reg80 = val;
192
193 setstd_exit:
194         if (err != 0)
195                 v4l2_err(sd, "Error setting std, write failed\n");
196
197         return err;
198 }
199
200 static int adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type)
201 {
202         struct adv7343_state *state = to_state(sd);
203         unsigned char val;
204         int err = 0;
205
206         if (output_type > ADV7343_SVIDEO_ID) {
207                 v4l2_dbg(1, debug, sd,
208                         "Invalid output type or output type not supported:%d\n",
209                                                                 output_type);
210                 return -EINVAL;
211         }
212
213         /* Enable Appropriate DAC */
214         val = state->reg00 & 0x03;
215
216         if (output_type == ADV7343_COMPOSITE_ID)
217                 val |= ADV7343_COMPOSITE_POWER_VALUE;
218         else if (output_type == ADV7343_COMPONENT_ID)
219                 val |= ADV7343_COMPONENT_POWER_VALUE;
220         else
221                 val |= ADV7343_SVIDEO_POWER_VALUE;
222
223         err = adv7343_write(sd, ADV7343_POWER_MODE_REG, val);
224         if (err < 0)
225                 goto setoutput_exit;
226
227         state->reg00 = val;
228
229         /* Enable YUV output */
230         val = state->reg02 | YUV_OUTPUT_SELECT;
231         err = adv7343_write(sd, ADV7343_MODE_REG0, val);
232         if (err < 0)
233                 goto setoutput_exit;
234
235         state->reg02 = val;
236
237         /* configure SD DAC Output 2 and SD DAC Output 1 bit to zero */
238         val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI);
239         err = adv7343_write(sd, ADV7343_SD_MODE_REG2, val);
240         if (err < 0)
241                 goto setoutput_exit;
242
243         state->reg82 = val;
244
245         /* configure ED/HD Color DAC Swap and ED/HD RGB Input Enable bit to
246          * zero */
247         val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI);
248         err = adv7343_write(sd, ADV7343_HD_MODE_REG6, val);
249         if (err < 0)
250                 goto setoutput_exit;
251
252         state->reg35 = val;
253
254 setoutput_exit:
255         if (err != 0)
256                 v4l2_err(sd, "Error setting output, write failed\n");
257
258         return err;
259 }
260
261 static int adv7343_log_status(struct v4l2_subdev *sd)
262 {
263         struct adv7343_state *state = to_state(sd);
264
265         v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std);
266         v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" :
267                         ((state->output == 1) ? "Component" : "S-Video"));
268         return 0;
269 }
270
271 static int adv7343_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc)
272 {
273         switch (qc->id) {
274         case V4L2_CID_BRIGHTNESS:
275                 return v4l2_ctrl_query_fill(qc, ADV7343_BRIGHTNESS_MIN,
276                                                 ADV7343_BRIGHTNESS_MAX, 1,
277                                                 ADV7343_BRIGHTNESS_DEF);
278         case V4L2_CID_HUE:
279                 return v4l2_ctrl_query_fill(qc, ADV7343_HUE_MIN,
280                                                 ADV7343_HUE_MAX, 1 ,
281                                                 ADV7343_HUE_DEF);
282         case V4L2_CID_GAIN:
283                 return v4l2_ctrl_query_fill(qc, ADV7343_GAIN_MIN,
284                                                 ADV7343_GAIN_MAX, 1,
285                                                 ADV7343_GAIN_DEF);
286         default:
287                 break;
288         }
289
290         return 0;
291 }
292
293 static int adv7343_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
294 {
295         struct adv7343_state *state = to_state(sd);
296         int err = 0;
297
298         switch (ctrl->id) {
299         case V4L2_CID_BRIGHTNESS:
300                 if (ctrl->value < ADV7343_BRIGHTNESS_MIN ||
301                                         ctrl->value > ADV7343_BRIGHTNESS_MAX) {
302                         v4l2_dbg(1, debug, sd,
303                                         "invalid brightness settings %d\n",
304                                                                 ctrl->value);
305                         return -ERANGE;
306                 }
307
308                 state->bright = ctrl->value;
309                 err = adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
310                                         state->bright);
311                 break;
312
313         case V4L2_CID_HUE:
314                 if (ctrl->value < ADV7343_HUE_MIN ||
315                                         ctrl->value > ADV7343_HUE_MAX) {
316                         v4l2_dbg(1, debug, sd, "invalid hue settings %d\n",
317                                                                 ctrl->value);
318                         return -ERANGE;
319                 }
320
321                 state->hue = ctrl->value;
322                 err = adv7343_write(sd, ADV7343_SD_HUE_REG, state->hue);
323                 break;
324
325         case V4L2_CID_GAIN:
326                 if (ctrl->value < ADV7343_GAIN_MIN ||
327                                         ctrl->value > ADV7343_GAIN_MAX) {
328                         v4l2_dbg(1, debug, sd, "invalid gain settings %d\n",
329                                                                 ctrl->value);
330                         return -ERANGE;
331                 }
332
333                 if ((ctrl->value > POSITIVE_GAIN_MAX) &&
334                         (ctrl->value < NEGATIVE_GAIN_MIN)) {
335                         v4l2_dbg(1, debug, sd,
336                                 "gain settings not within the specified range\n");
337                         return -ERANGE;
338                 }
339
340                 state->gain = ctrl->value;
341                 err = adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, state->gain);
342                 break;
343
344         default:
345                 return -EINVAL;
346         }
347
348         if (err < 0)
349                 v4l2_err(sd, "Failed to set the encoder controls\n");
350
351         return err;
352 }
353
354 static int adv7343_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
355 {
356         struct adv7343_state *state = to_state(sd);
357
358         switch (ctrl->id) {
359         case V4L2_CID_BRIGHTNESS:
360                 ctrl->value = state->bright;
361                 break;
362
363         case V4L2_CID_HUE:
364                 ctrl->value = state->hue;
365                 break;
366
367         case V4L2_CID_GAIN:
368                 ctrl->value = state->gain;
369                 break;
370
371         default:
372                 return -EINVAL;
373         }
374
375         return 0;
376 }
377
378 static int adv7343_g_chip_ident(struct v4l2_subdev *sd,
379                                 struct v4l2_dbg_chip_ident *chip)
380 {
381         struct i2c_client *client = v4l2_get_subdevdata(sd);
382
383         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0);
384 }
385
386 static const struct v4l2_subdev_core_ops adv7343_core_ops = {
387         .log_status     = adv7343_log_status,
388         .g_chip_ident   = adv7343_g_chip_ident,
389         .g_ctrl         = adv7343_g_ctrl,
390         .s_ctrl         = adv7343_s_ctrl,
391         .queryctrl      = adv7343_queryctrl,
392 };
393
394 static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
395 {
396         struct adv7343_state *state = to_state(sd);
397         int err = 0;
398
399         if (state->std == std)
400                 return 0;
401
402         err = adv7343_setstd(sd, std);
403         if (!err)
404                 state->std = std;
405
406         return err;
407 }
408
409 static int adv7343_s_routing(struct v4l2_subdev *sd,
410                 u32 input, u32 output, u32 config)
411 {
412         struct adv7343_state *state = to_state(sd);
413         int err = 0;
414
415         if (state->output == output)
416                 return 0;
417
418         err = adv7343_setoutput(sd, output);
419         if (!err)
420                 state->output = output;
421
422         return err;
423 }
424
425 static const struct v4l2_subdev_video_ops adv7343_video_ops = {
426         .s_std_output   = adv7343_s_std_output,
427         .s_routing      = adv7343_s_routing,
428 };
429
430 static const struct v4l2_subdev_ops adv7343_ops = {
431         .core   = &adv7343_core_ops,
432         .video  = &adv7343_video_ops,
433 };
434
435 static int adv7343_initialize(struct v4l2_subdev *sd)
436 {
437         struct adv7343_state *state = to_state(sd);
438         int err = 0;
439         int i;
440
441         for (i = 0; i < ARRAY_SIZE(adv7343_init_reg_val); i += 2) {
442
443                 err = adv7343_write(sd, adv7343_init_reg_val[i],
444                                         adv7343_init_reg_val[i+1]);
445                 if (err) {
446                         v4l2_err(sd, "Error initializing\n");
447                         return err;
448                 }
449         }
450
451         /* Configure for default video standard */
452         err = adv7343_setoutput(sd, state->output);
453         if (err < 0) {
454                 v4l2_err(sd, "Error setting output during init\n");
455                 return -EINVAL;
456         }
457
458         err = adv7343_setstd(sd, state->std);
459         if (err < 0) {
460                 v4l2_err(sd, "Error setting std during init\n");
461                 return -EINVAL;
462         }
463
464         return err;
465 }
466
467 static int adv7343_probe(struct i2c_client *client,
468                                 const struct i2c_device_id *id)
469 {
470         struct adv7343_state *state;
471
472         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
473                 return -ENODEV;
474
475         v4l_info(client, "chip found @ 0x%x (%s)\n",
476                         client->addr << 1, client->adapter->name);
477
478         state = kzalloc(sizeof(struct adv7343_state), GFP_KERNEL);
479         if (state == NULL)
480                 return -ENOMEM;
481
482         state->reg00    = 0x80;
483         state->reg01    = 0x00;
484         state->reg02    = 0x20;
485         state->reg35    = 0x00;
486         state->reg80    = ADV7343_SD_MODE_REG1_DEFAULT;
487         state->reg82    = ADV7343_SD_MODE_REG2_DEFAULT;
488
489         state->output = ADV7343_COMPOSITE_ID;
490         state->std = V4L2_STD_NTSC;
491
492         v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops);
493         return adv7343_initialize(&state->sd);
494 }
495
496 static int adv7343_remove(struct i2c_client *client)
497 {
498         struct v4l2_subdev *sd = i2c_get_clientdata(client);
499
500         v4l2_device_unregister_subdev(sd);
501         kfree(to_state(sd));
502
503         return 0;
504 }
505
506 static const struct i2c_device_id adv7343_id[] = {
507         {"adv7343", 0},
508         {},
509 };
510
511 MODULE_DEVICE_TABLE(i2c, adv7343_id);
512
513 static struct i2c_driver adv7343_driver = {
514         .driver = {
515                 .owner  = THIS_MODULE,
516                 .name   = "adv7343",
517         },
518         .probe          = adv7343_probe,
519         .remove         = adv7343_remove,
520         .id_table       = adv7343_id,
521 };
522
523 static __init int init_adv7343(void)
524 {
525         return i2c_add_driver(&adv7343_driver);
526 }
527
528 static __exit void exit_adv7343(void)
529 {
530         i2c_del_driver(&adv7343_driver);
531 }
532
533 module_init(init_adv7343);
534 module_exit(exit_adv7343);