pandora: reserve CMA area for c64_tools
[pandora-kernel.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 #include <media/v4l2-ctrls.h>
33
34 #include "adv7343_regs.h"
35
36 MODULE_DESCRIPTION("ADV7343 video encoder driver");
37 MODULE_LICENSE("GPL");
38
39 static int debug;
40 module_param(debug, int, 0644);
41 MODULE_PARM_DESC(debug, "Debug level 0-1");
42
43 struct adv7343_state {
44         struct v4l2_subdev sd;
45         struct v4l2_ctrl_handler hdl;
46         u8 reg00;
47         u8 reg01;
48         u8 reg02;
49         u8 reg35;
50         u8 reg80;
51         u8 reg82;
52         u32 output;
53         v4l2_std_id std;
54 };
55
56 static inline struct adv7343_state *to_state(struct v4l2_subdev *sd)
57 {
58         return container_of(sd, struct adv7343_state, sd);
59 }
60
61 static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
62 {
63         return &container_of(ctrl->handler, struct adv7343_state, hdl)->sd;
64 }
65
66 static inline int adv7343_write(struct v4l2_subdev *sd, u8 reg, u8 value)
67 {
68         struct i2c_client *client = v4l2_get_subdevdata(sd);
69
70         return i2c_smbus_write_byte_data(client, reg, value);
71 }
72
73 static const u8 adv7343_init_reg_val[] = {
74         ADV7343_SOFT_RESET, ADV7343_SOFT_RESET_DEFAULT,
75         ADV7343_POWER_MODE_REG, ADV7343_POWER_MODE_REG_DEFAULT,
76
77         ADV7343_HD_MODE_REG1, ADV7343_HD_MODE_REG1_DEFAULT,
78         ADV7343_HD_MODE_REG2, ADV7343_HD_MODE_REG2_DEFAULT,
79         ADV7343_HD_MODE_REG3, ADV7343_HD_MODE_REG3_DEFAULT,
80         ADV7343_HD_MODE_REG4, ADV7343_HD_MODE_REG4_DEFAULT,
81         ADV7343_HD_MODE_REG5, ADV7343_HD_MODE_REG5_DEFAULT,
82         ADV7343_HD_MODE_REG6, ADV7343_HD_MODE_REG6_DEFAULT,
83         ADV7343_HD_MODE_REG7, ADV7343_HD_MODE_REG7_DEFAULT,
84
85         ADV7343_SD_MODE_REG1, ADV7343_SD_MODE_REG1_DEFAULT,
86         ADV7343_SD_MODE_REG2, ADV7343_SD_MODE_REG2_DEFAULT,
87         ADV7343_SD_MODE_REG3, ADV7343_SD_MODE_REG3_DEFAULT,
88         ADV7343_SD_MODE_REG4, ADV7343_SD_MODE_REG4_DEFAULT,
89         ADV7343_SD_MODE_REG5, ADV7343_SD_MODE_REG5_DEFAULT,
90         ADV7343_SD_MODE_REG6, ADV7343_SD_MODE_REG6_DEFAULT,
91         ADV7343_SD_MODE_REG7, ADV7343_SD_MODE_REG7_DEFAULT,
92         ADV7343_SD_MODE_REG8, ADV7343_SD_MODE_REG8_DEFAULT,
93
94         ADV7343_SD_HUE_REG, ADV7343_SD_HUE_REG_DEFAULT,
95         ADV7343_SD_CGMS_WSS0, ADV7343_SD_CGMS_WSS0_DEFAULT,
96         ADV7343_SD_BRIGHTNESS_WSS, ADV7343_SD_BRIGHTNESS_WSS_DEFAULT,
97 };
98
99 /*
100  *                          2^32
101  * FSC(reg) =  FSC (HZ) * --------
102  *                        27000000
103  */
104 static const struct adv7343_std_info stdinfo[] = {
105         {
106                 /* FSC(Hz) = 3,579,545.45 Hz */
107                 SD_STD_NTSC, 569408542, V4L2_STD_NTSC,
108         }, {
109                 /* FSC(Hz) = 3,575,611.00 Hz */
110                 SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M,
111         }, {
112                 /* FSC(Hz) = 3,582,056.00 */
113                 SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc,
114         }, {
115                 /* FSC(Hz) = 4,433,618.75 Hz */
116                 SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N,
117         }, {
118                 /* FSC(Hz) = 4,433,618.75 Hz */
119                 SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL,
120         }, {
121                 /* FSC(Hz) = 4,433,618.75 Hz */
122                 SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443,
123         }, {
124                 /* FSC(Hz) = 4,433,618.75 Hz */
125                 SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60,
126         },
127 };
128
129 static int adv7343_setstd(struct v4l2_subdev *sd, v4l2_std_id std)
130 {
131         struct adv7343_state *state = to_state(sd);
132         struct adv7343_std_info *std_info;
133         int output_idx, num_std;
134         char *fsc_ptr;
135         u8 reg, val;
136         int err = 0;
137         int i = 0;
138
139         output_idx = state->output;
140
141         std_info = (struct adv7343_std_info *)stdinfo;
142         num_std = ARRAY_SIZE(stdinfo);
143
144         for (i = 0; i < num_std; i++) {
145                 if (std_info[i].stdid & std)
146                         break;
147         }
148
149         if (i == num_std) {
150                 v4l2_dbg(1, debug, sd,
151                                 "Invalid std or std is not supported: %llx\n",
152                                                 (unsigned long long)std);
153                 return -EINVAL;
154         }
155
156         /* Set the standard */
157         val = state->reg80 & (~(SD_STD_MASK));
158         val |= std_info[i].standard_val3;
159         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
160         if (err < 0)
161                 goto setstd_exit;
162
163         state->reg80 = val;
164
165         /* Configure the input mode register */
166         val = state->reg01 & (~((u8) INPUT_MODE_MASK));
167         val |= SD_INPUT_MODE;
168         err = adv7343_write(sd, ADV7343_MODE_SELECT_REG, val);
169         if (err < 0)
170                 goto setstd_exit;
171
172         state->reg01 = val;
173
174         /* Program the sub carrier frequency registers */
175         fsc_ptr = (unsigned char *)&std_info[i].fsc_val;
176         reg = ADV7343_FSC_REG0;
177         for (i = 0; i < 4; i++, reg++, fsc_ptr++) {
178                 err = adv7343_write(sd, reg, *fsc_ptr);
179                 if (err < 0)
180                         goto setstd_exit;
181         }
182
183         val = state->reg80;
184
185         /* Filter settings */
186         if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443))
187                 val &= 0x03;
188         else if (std & ~V4L2_STD_SECAM)
189                 val |= 0x04;
190
191         err = adv7343_write(sd, ADV7343_SD_MODE_REG1, val);
192         if (err < 0)
193                 goto setstd_exit;
194
195         state->reg80 = val;
196
197 setstd_exit:
198         if (err != 0)
199                 v4l2_err(sd, "Error setting std, write failed\n");
200
201         return err;
202 }
203
204 static int adv7343_setoutput(struct v4l2_subdev *sd, u32 output_type)
205 {
206         struct adv7343_state *state = to_state(sd);
207         unsigned char val;
208         int err = 0;
209
210         if (output_type > ADV7343_SVIDEO_ID) {
211                 v4l2_dbg(1, debug, sd,
212                         "Invalid output type or output type not supported:%d\n",
213                                                                 output_type);
214                 return -EINVAL;
215         }
216
217         /* Enable Appropriate DAC */
218         val = state->reg00 & 0x03;
219
220         if (output_type == ADV7343_COMPOSITE_ID)
221                 val |= ADV7343_COMPOSITE_POWER_VALUE;
222         else if (output_type == ADV7343_COMPONENT_ID)
223                 val |= ADV7343_COMPONENT_POWER_VALUE;
224         else
225                 val |= ADV7343_SVIDEO_POWER_VALUE;
226
227         err = adv7343_write(sd, ADV7343_POWER_MODE_REG, val);
228         if (err < 0)
229                 goto setoutput_exit;
230
231         state->reg00 = val;
232
233         /* Enable YUV output */
234         val = state->reg02 | YUV_OUTPUT_SELECT;
235         err = adv7343_write(sd, ADV7343_MODE_REG0, val);
236         if (err < 0)
237                 goto setoutput_exit;
238
239         state->reg02 = val;
240
241         /* configure SD DAC Output 2 and SD DAC Output 1 bit to zero */
242         val = state->reg82 & (SD_DAC_1_DI & SD_DAC_2_DI);
243         err = adv7343_write(sd, ADV7343_SD_MODE_REG2, val);
244         if (err < 0)
245                 goto setoutput_exit;
246
247         state->reg82 = val;
248
249         /* configure ED/HD Color DAC Swap and ED/HD RGB Input Enable bit to
250          * zero */
251         val = state->reg35 & (HD_RGB_INPUT_DI & HD_DAC_SWAP_DI);
252         err = adv7343_write(sd, ADV7343_HD_MODE_REG6, val);
253         if (err < 0)
254                 goto setoutput_exit;
255
256         state->reg35 = val;
257
258 setoutput_exit:
259         if (err != 0)
260                 v4l2_err(sd, "Error setting output, write failed\n");
261
262         return err;
263 }
264
265 static int adv7343_log_status(struct v4l2_subdev *sd)
266 {
267         struct adv7343_state *state = to_state(sd);
268
269         v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std);
270         v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" :
271                         ((state->output == 1) ? "Component" : "S-Video"));
272         return 0;
273 }
274
275 static int adv7343_s_ctrl(struct v4l2_ctrl *ctrl)
276 {
277         struct v4l2_subdev *sd = to_sd(ctrl);
278
279         switch (ctrl->id) {
280         case V4L2_CID_BRIGHTNESS:
281                 return adv7343_write(sd, ADV7343_SD_BRIGHTNESS_WSS,
282                                         ctrl->val);
283
284         case V4L2_CID_HUE:
285                 return adv7343_write(sd, ADV7343_SD_HUE_REG, ctrl->val);
286
287         case V4L2_CID_GAIN:
288                 return adv7343_write(sd, ADV7343_DAC2_OUTPUT_LEVEL, ctrl->val);
289         }
290         return -EINVAL;
291 }
292
293 static int adv7343_g_chip_ident(struct v4l2_subdev *sd,
294                                 struct v4l2_dbg_chip_ident *chip)
295 {
296         struct i2c_client *client = v4l2_get_subdevdata(sd);
297
298         return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7343, 0);
299 }
300
301 static const struct v4l2_ctrl_ops adv7343_ctrl_ops = {
302         .s_ctrl = adv7343_s_ctrl,
303 };
304
305 static const struct v4l2_subdev_core_ops adv7343_core_ops = {
306         .log_status = adv7343_log_status,
307         .g_chip_ident = adv7343_g_chip_ident,
308         .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
309         .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
310         .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
311         .g_ctrl = v4l2_subdev_g_ctrl,
312         .s_ctrl = v4l2_subdev_s_ctrl,
313         .queryctrl = v4l2_subdev_queryctrl,
314         .querymenu = v4l2_subdev_querymenu,
315 };
316
317 static int adv7343_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
318 {
319         struct adv7343_state *state = to_state(sd);
320         int err = 0;
321
322         if (state->std == std)
323                 return 0;
324
325         err = adv7343_setstd(sd, std);
326         if (!err)
327                 state->std = std;
328
329         return err;
330 }
331
332 static int adv7343_s_routing(struct v4l2_subdev *sd,
333                 u32 input, u32 output, u32 config)
334 {
335         struct adv7343_state *state = to_state(sd);
336         int err = 0;
337
338         if (state->output == output)
339                 return 0;
340
341         err = adv7343_setoutput(sd, output);
342         if (!err)
343                 state->output = output;
344
345         return err;
346 }
347
348 static const struct v4l2_subdev_video_ops adv7343_video_ops = {
349         .s_std_output   = adv7343_s_std_output,
350         .s_routing      = adv7343_s_routing,
351 };
352
353 static const struct v4l2_subdev_ops adv7343_ops = {
354         .core   = &adv7343_core_ops,
355         .video  = &adv7343_video_ops,
356 };
357
358 static int adv7343_initialize(struct v4l2_subdev *sd)
359 {
360         struct adv7343_state *state = to_state(sd);
361         int err = 0;
362         int i;
363
364         for (i = 0; i < ARRAY_SIZE(adv7343_init_reg_val); i += 2) {
365
366                 err = adv7343_write(sd, adv7343_init_reg_val[i],
367                                         adv7343_init_reg_val[i+1]);
368                 if (err) {
369                         v4l2_err(sd, "Error initializing\n");
370                         return err;
371                 }
372         }
373
374         /* Configure for default video standard */
375         err = adv7343_setoutput(sd, state->output);
376         if (err < 0) {
377                 v4l2_err(sd, "Error setting output during init\n");
378                 return -EINVAL;
379         }
380
381         err = adv7343_setstd(sd, state->std);
382         if (err < 0) {
383                 v4l2_err(sd, "Error setting std during init\n");
384                 return -EINVAL;
385         }
386
387         return err;
388 }
389
390 static int adv7343_probe(struct i2c_client *client,
391                                 const struct i2c_device_id *id)
392 {
393         struct adv7343_state *state;
394         int err;
395
396         if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
397                 return -ENODEV;
398
399         v4l_info(client, "chip found @ 0x%x (%s)\n",
400                         client->addr << 1, client->adapter->name);
401
402         state = kzalloc(sizeof(struct adv7343_state), GFP_KERNEL);
403         if (state == NULL)
404                 return -ENOMEM;
405
406         state->reg00    = 0x80;
407         state->reg01    = 0x00;
408         state->reg02    = 0x20;
409         state->reg35    = 0x00;
410         state->reg80    = ADV7343_SD_MODE_REG1_DEFAULT;
411         state->reg82    = ADV7343_SD_MODE_REG2_DEFAULT;
412
413         state->output = ADV7343_COMPOSITE_ID;
414         state->std = V4L2_STD_NTSC;
415
416         v4l2_i2c_subdev_init(&state->sd, client, &adv7343_ops);
417
418         v4l2_ctrl_handler_init(&state->hdl, 2);
419         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
420                         V4L2_CID_BRIGHTNESS, ADV7343_BRIGHTNESS_MIN,
421                                              ADV7343_BRIGHTNESS_MAX, 1,
422                                              ADV7343_BRIGHTNESS_DEF);
423         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
424                         V4L2_CID_HUE, ADV7343_HUE_MIN,
425                                       ADV7343_HUE_MAX, 1,
426                                       ADV7343_HUE_DEF);
427         v4l2_ctrl_new_std(&state->hdl, &adv7343_ctrl_ops,
428                         V4L2_CID_GAIN, ADV7343_GAIN_MIN,
429                                        ADV7343_GAIN_MAX, 1,
430                                        ADV7343_GAIN_DEF);
431         state->sd.ctrl_handler = &state->hdl;
432         if (state->hdl.error) {
433                 int err = state->hdl.error;
434
435                 v4l2_ctrl_handler_free(&state->hdl);
436                 kfree(state);
437                 return err;
438         }
439         v4l2_ctrl_handler_setup(&state->hdl);
440
441         err = adv7343_initialize(&state->sd);
442         if (err) {
443                 v4l2_ctrl_handler_free(&state->hdl);
444                 kfree(state);
445         }
446         return err;
447 }
448
449 static int adv7343_remove(struct i2c_client *client)
450 {
451         struct v4l2_subdev *sd = i2c_get_clientdata(client);
452         struct adv7343_state *state = to_state(sd);
453
454         v4l2_device_unregister_subdev(sd);
455         v4l2_ctrl_handler_free(&state->hdl);
456         kfree(state);
457
458         return 0;
459 }
460
461 static const struct i2c_device_id adv7343_id[] = {
462         {"adv7343", 0},
463         {},
464 };
465
466 MODULE_DEVICE_TABLE(i2c, adv7343_id);
467
468 static struct i2c_driver adv7343_driver = {
469         .driver = {
470                 .owner  = THIS_MODULE,
471                 .name   = "adv7343",
472         },
473         .probe          = adv7343_probe,
474         .remove         = adv7343_remove,
475         .id_table       = adv7343_id,
476 };
477
478 static __init int init_adv7343(void)
479 {
480         return i2c_add_driver(&adv7343_driver);
481 }
482
483 static __exit void exit_adv7343(void)
484 {
485         i2c_del_driver(&adv7343_driver);
486 }
487
488 module_init(init_adv7343);
489 module_exit(exit_adv7343);