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ebc04047 BT |
1 | /* |
2 | * adv7393 - ADV7393 Video Encoder Driver | |
3 | * | |
4 | * The encoder hardware does not support SECAM. | |
5 | * | |
6 | * Copyright (C) 2010-2012 ADVANSEE - http://www.advansee.com/ | |
7 | * Benoît Thébaudeau <benoit.thebaudeau@advansee.com> | |
8 | * | |
9 | * Based on ADV7343 driver, | |
10 | * | |
11 | * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/ | |
12 | * | |
13 | * This program is free software; you can redistribute it and/or | |
14 | * modify it under the terms of the GNU General Public License as | |
15 | * published by the Free Software Foundation version 2. | |
16 | * | |
17 | * This program is distributed .as is. WITHOUT ANY WARRANTY of any | |
18 | * kind, whether express or implied; without even the implied warranty | |
19 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | */ | |
22 | ||
23 | #include <linux/kernel.h> | |
24 | #include <linux/init.h> | |
25 | #include <linux/ctype.h> | |
26 | #include <linux/slab.h> | |
27 | #include <linux/i2c.h> | |
28 | #include <linux/device.h> | |
29 | #include <linux/delay.h> | |
30 | #include <linux/module.h> | |
31 | #include <linux/videodev2.h> | |
32 | #include <linux/uaccess.h> | |
33 | ||
34 | #include <media/adv7393.h> | |
35 | #include <media/v4l2-device.h> | |
36 | #include <media/v4l2-chip-ident.h> | |
37 | #include <media/v4l2-ctrls.h> | |
38 | ||
39 | #include "adv7393_regs.h" | |
40 | ||
41 | MODULE_DESCRIPTION("ADV7393 video encoder driver"); | |
42 | MODULE_LICENSE("GPL"); | |
43 | ||
44 | static bool debug; | |
45 | module_param(debug, bool, 0644); | |
46 | MODULE_PARM_DESC(debug, "Debug level 0-1"); | |
47 | ||
48 | struct adv7393_state { | |
49 | struct v4l2_subdev sd; | |
50 | struct v4l2_ctrl_handler hdl; | |
51 | u8 reg00; | |
52 | u8 reg01; | |
53 | u8 reg02; | |
54 | u8 reg35; | |
55 | u8 reg80; | |
56 | u8 reg82; | |
57 | u32 output; | |
58 | v4l2_std_id std; | |
59 | }; | |
60 | ||
61 | static inline struct adv7393_state *to_state(struct v4l2_subdev *sd) | |
62 | { | |
63 | return container_of(sd, struct adv7393_state, sd); | |
64 | } | |
65 | ||
66 | static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl) | |
67 | { | |
68 | return &container_of(ctrl->handler, struct adv7393_state, hdl)->sd; | |
69 | } | |
70 | ||
71 | static inline int adv7393_write(struct v4l2_subdev *sd, u8 reg, u8 value) | |
72 | { | |
73 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
74 | ||
75 | return i2c_smbus_write_byte_data(client, reg, value); | |
76 | } | |
77 | ||
78 | static const u8 adv7393_init_reg_val[] = { | |
79 | ADV7393_SOFT_RESET, ADV7393_SOFT_RESET_DEFAULT, | |
80 | ADV7393_POWER_MODE_REG, ADV7393_POWER_MODE_REG_DEFAULT, | |
81 | ||
82 | ADV7393_HD_MODE_REG1, ADV7393_HD_MODE_REG1_DEFAULT, | |
83 | ADV7393_HD_MODE_REG2, ADV7393_HD_MODE_REG2_DEFAULT, | |
84 | ADV7393_HD_MODE_REG3, ADV7393_HD_MODE_REG3_DEFAULT, | |
85 | ADV7393_HD_MODE_REG4, ADV7393_HD_MODE_REG4_DEFAULT, | |
86 | ADV7393_HD_MODE_REG5, ADV7393_HD_MODE_REG5_DEFAULT, | |
87 | ADV7393_HD_MODE_REG6, ADV7393_HD_MODE_REG6_DEFAULT, | |
88 | ADV7393_HD_MODE_REG7, ADV7393_HD_MODE_REG7_DEFAULT, | |
89 | ||
90 | ADV7393_SD_MODE_REG1, ADV7393_SD_MODE_REG1_DEFAULT, | |
91 | ADV7393_SD_MODE_REG2, ADV7393_SD_MODE_REG2_DEFAULT, | |
92 | ADV7393_SD_MODE_REG3, ADV7393_SD_MODE_REG3_DEFAULT, | |
93 | ADV7393_SD_MODE_REG4, ADV7393_SD_MODE_REG4_DEFAULT, | |
94 | ADV7393_SD_MODE_REG5, ADV7393_SD_MODE_REG5_DEFAULT, | |
95 | ADV7393_SD_MODE_REG6, ADV7393_SD_MODE_REG6_DEFAULT, | |
96 | ADV7393_SD_MODE_REG7, ADV7393_SD_MODE_REG7_DEFAULT, | |
97 | ADV7393_SD_MODE_REG8, ADV7393_SD_MODE_REG8_DEFAULT, | |
98 | ||
99 | ADV7393_SD_TIMING_REG0, ADV7393_SD_TIMING_REG0_DEFAULT, | |
100 | ||
101 | ADV7393_SD_HUE_ADJUST, ADV7393_SD_HUE_ADJUST_DEFAULT, | |
102 | ADV7393_SD_CGMS_WSS0, ADV7393_SD_CGMS_WSS0_DEFAULT, | |
103 | ADV7393_SD_BRIGHTNESS_WSS, ADV7393_SD_BRIGHTNESS_WSS_DEFAULT, | |
104 | }; | |
105 | ||
106 | /* | |
107 | * 2^32 | |
108 | * FSC(reg) = FSC (HZ) * -------- | |
109 | * 27000000 | |
110 | */ | |
111 | static const struct adv7393_std_info stdinfo[] = { | |
112 | { | |
113 | /* FSC(Hz) = 4,433,618.75 Hz */ | |
114 | SD_STD_NTSC, 705268427, V4L2_STD_NTSC_443, | |
115 | }, { | |
116 | /* FSC(Hz) = 3,579,545.45 Hz */ | |
117 | SD_STD_NTSC, 569408542, V4L2_STD_NTSC, | |
118 | }, { | |
119 | /* FSC(Hz) = 3,575,611.00 Hz */ | |
120 | SD_STD_PAL_M, 568782678, V4L2_STD_PAL_M, | |
121 | }, { | |
122 | /* FSC(Hz) = 3,582,056.00 Hz */ | |
123 | SD_STD_PAL_N, 569807903, V4L2_STD_PAL_Nc, | |
124 | }, { | |
125 | /* FSC(Hz) = 4,433,618.75 Hz */ | |
126 | SD_STD_PAL_N, 705268427, V4L2_STD_PAL_N, | |
127 | }, { | |
128 | /* FSC(Hz) = 4,433,618.75 Hz */ | |
129 | SD_STD_PAL_M, 705268427, V4L2_STD_PAL_60, | |
130 | }, { | |
131 | /* FSC(Hz) = 4,433,618.75 Hz */ | |
132 | SD_STD_PAL_BDGHI, 705268427, V4L2_STD_PAL, | |
133 | }, | |
134 | }; | |
135 | ||
136 | static int adv7393_setstd(struct v4l2_subdev *sd, v4l2_std_id std) | |
137 | { | |
138 | struct adv7393_state *state = to_state(sd); | |
139 | const struct adv7393_std_info *std_info; | |
140 | int num_std; | |
141 | u8 reg; | |
142 | u32 val; | |
143 | int err = 0; | |
144 | int i; | |
145 | ||
146 | num_std = ARRAY_SIZE(stdinfo); | |
147 | ||
148 | for (i = 0; i < num_std; i++) { | |
149 | if (stdinfo[i].stdid & std) | |
150 | break; | |
151 | } | |
152 | ||
153 | if (i == num_std) { | |
154 | v4l2_dbg(1, debug, sd, | |
155 | "Invalid std or std is not supported: %llx\n", | |
156 | (unsigned long long)std); | |
157 | return -EINVAL; | |
158 | } | |
159 | ||
160 | std_info = &stdinfo[i]; | |
161 | ||
162 | /* Set the standard */ | |
163 | val = state->reg80 & ~SD_STD_MASK; | |
164 | val |= std_info->standard_val3; | |
165 | err = adv7393_write(sd, ADV7393_SD_MODE_REG1, val); | |
166 | if (err < 0) | |
167 | goto setstd_exit; | |
168 | ||
169 | state->reg80 = val; | |
170 | ||
171 | /* Configure the input mode register */ | |
172 | val = state->reg01 & ~INPUT_MODE_MASK; | |
173 | val |= SD_INPUT_MODE; | |
174 | err = adv7393_write(sd, ADV7393_MODE_SELECT_REG, val); | |
175 | if (err < 0) | |
176 | goto setstd_exit; | |
177 | ||
178 | state->reg01 = val; | |
179 | ||
180 | /* Program the sub carrier frequency registers */ | |
181 | val = std_info->fsc_val; | |
182 | for (reg = ADV7393_FSC_REG0; reg <= ADV7393_FSC_REG3; reg++) { | |
183 | err = adv7393_write(sd, reg, val); | |
184 | if (err < 0) | |
185 | goto setstd_exit; | |
186 | val >>= 8; | |
187 | } | |
188 | ||
189 | val = state->reg82; | |
190 | ||
191 | /* Pedestal settings */ | |
192 | if (std & (V4L2_STD_NTSC | V4L2_STD_NTSC_443)) | |
193 | val |= SD_PEDESTAL_EN; | |
194 | else | |
195 | val &= SD_PEDESTAL_DI; | |
196 | ||
197 | err = adv7393_write(sd, ADV7393_SD_MODE_REG2, val); | |
198 | if (err < 0) | |
199 | goto setstd_exit; | |
200 | ||
201 | state->reg82 = val; | |
202 | ||
203 | setstd_exit: | |
204 | if (err != 0) | |
205 | v4l2_err(sd, "Error setting std, write failed\n"); | |
206 | ||
207 | return err; | |
208 | } | |
209 | ||
210 | static int adv7393_setoutput(struct v4l2_subdev *sd, u32 output_type) | |
211 | { | |
212 | struct adv7393_state *state = to_state(sd); | |
213 | u8 val; | |
214 | int err = 0; | |
215 | ||
216 | if (output_type > ADV7393_SVIDEO_ID) { | |
217 | v4l2_dbg(1, debug, sd, | |
218 | "Invalid output type or output type not supported:%d\n", | |
219 | output_type); | |
220 | return -EINVAL; | |
221 | } | |
222 | ||
223 | /* Enable Appropriate DAC */ | |
224 | val = state->reg00 & 0x03; | |
225 | ||
226 | if (output_type == ADV7393_COMPOSITE_ID) | |
227 | val |= ADV7393_COMPOSITE_POWER_VALUE; | |
228 | else if (output_type == ADV7393_COMPONENT_ID) | |
229 | val |= ADV7393_COMPONENT_POWER_VALUE; | |
230 | else | |
231 | val |= ADV7393_SVIDEO_POWER_VALUE; | |
232 | ||
233 | err = adv7393_write(sd, ADV7393_POWER_MODE_REG, val); | |
234 | if (err < 0) | |
235 | goto setoutput_exit; | |
236 | ||
237 | state->reg00 = val; | |
238 | ||
239 | /* Enable YUV output */ | |
240 | val = state->reg02 | YUV_OUTPUT_SELECT; | |
241 | err = adv7393_write(sd, ADV7393_MODE_REG0, val); | |
242 | if (err < 0) | |
243 | goto setoutput_exit; | |
244 | ||
245 | state->reg02 = val; | |
246 | ||
247 | /* configure SD DAC Output 1 bit */ | |
248 | val = state->reg82; | |
249 | if (output_type == ADV7393_COMPONENT_ID) | |
250 | val &= SD_DAC_OUT1_DI; | |
251 | else | |
252 | val |= SD_DAC_OUT1_EN; | |
253 | err = adv7393_write(sd, ADV7393_SD_MODE_REG2, val); | |
254 | if (err < 0) | |
255 | goto setoutput_exit; | |
256 | ||
257 | state->reg82 = val; | |
258 | ||
259 | /* configure ED/HD Color DAC Swap bit to zero */ | |
260 | val = state->reg35 & HD_DAC_SWAP_DI; | |
261 | err = adv7393_write(sd, ADV7393_HD_MODE_REG6, val); | |
262 | if (err < 0) | |
263 | goto setoutput_exit; | |
264 | ||
265 | state->reg35 = val; | |
266 | ||
267 | setoutput_exit: | |
268 | if (err != 0) | |
269 | v4l2_err(sd, "Error setting output, write failed\n"); | |
270 | ||
271 | return err; | |
272 | } | |
273 | ||
274 | static int adv7393_log_status(struct v4l2_subdev *sd) | |
275 | { | |
276 | struct adv7393_state *state = to_state(sd); | |
277 | ||
278 | v4l2_info(sd, "Standard: %llx\n", (unsigned long long)state->std); | |
279 | v4l2_info(sd, "Output: %s\n", (state->output == 0) ? "Composite" : | |
280 | ((state->output == 1) ? "Component" : "S-Video")); | |
281 | return 0; | |
282 | } | |
283 | ||
284 | static int adv7393_s_ctrl(struct v4l2_ctrl *ctrl) | |
285 | { | |
286 | struct v4l2_subdev *sd = to_sd(ctrl); | |
287 | ||
288 | switch (ctrl->id) { | |
289 | case V4L2_CID_BRIGHTNESS: | |
290 | return adv7393_write(sd, ADV7393_SD_BRIGHTNESS_WSS, | |
291 | ctrl->val & SD_BRIGHTNESS_VALUE_MASK); | |
292 | ||
293 | case V4L2_CID_HUE: | |
294 | return adv7393_write(sd, ADV7393_SD_HUE_ADJUST, | |
295 | ctrl->val - ADV7393_HUE_MIN); | |
296 | ||
297 | case V4L2_CID_GAIN: | |
298 | return adv7393_write(sd, ADV7393_DAC123_OUTPUT_LEVEL, | |
299 | ctrl->val); | |
300 | } | |
301 | return -EINVAL; | |
302 | } | |
303 | ||
304 | static int adv7393_g_chip_ident(struct v4l2_subdev *sd, | |
305 | struct v4l2_dbg_chip_ident *chip) | |
306 | { | |
307 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
308 | ||
309 | return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_ADV7393, 0); | |
310 | } | |
311 | ||
312 | static const struct v4l2_ctrl_ops adv7393_ctrl_ops = { | |
313 | .s_ctrl = adv7393_s_ctrl, | |
314 | }; | |
315 | ||
316 | static const struct v4l2_subdev_core_ops adv7393_core_ops = { | |
317 | .log_status = adv7393_log_status, | |
318 | .g_chip_ident = adv7393_g_chip_ident, | |
319 | .g_ext_ctrls = v4l2_subdev_g_ext_ctrls, | |
320 | .try_ext_ctrls = v4l2_subdev_try_ext_ctrls, | |
321 | .s_ext_ctrls = v4l2_subdev_s_ext_ctrls, | |
322 | .g_ctrl = v4l2_subdev_g_ctrl, | |
323 | .s_ctrl = v4l2_subdev_s_ctrl, | |
324 | .queryctrl = v4l2_subdev_queryctrl, | |
325 | .querymenu = v4l2_subdev_querymenu, | |
326 | }; | |
327 | ||
328 | static int adv7393_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std) | |
329 | { | |
330 | struct adv7393_state *state = to_state(sd); | |
331 | int err = 0; | |
332 | ||
333 | if (state->std == std) | |
334 | return 0; | |
335 | ||
336 | err = adv7393_setstd(sd, std); | |
337 | if (!err) | |
338 | state->std = std; | |
339 | ||
340 | return err; | |
341 | } | |
342 | ||
343 | static int adv7393_s_routing(struct v4l2_subdev *sd, | |
344 | u32 input, u32 output, u32 config) | |
345 | { | |
346 | struct adv7393_state *state = to_state(sd); | |
347 | int err = 0; | |
348 | ||
349 | if (state->output == output) | |
350 | return 0; | |
351 | ||
352 | err = adv7393_setoutput(sd, output); | |
353 | if (!err) | |
354 | state->output = output; | |
355 | ||
356 | return err; | |
357 | } | |
358 | ||
359 | static const struct v4l2_subdev_video_ops adv7393_video_ops = { | |
360 | .s_std_output = adv7393_s_std_output, | |
361 | .s_routing = adv7393_s_routing, | |
362 | }; | |
363 | ||
364 | static const struct v4l2_subdev_ops adv7393_ops = { | |
365 | .core = &adv7393_core_ops, | |
366 | .video = &adv7393_video_ops, | |
367 | }; | |
368 | ||
369 | static int adv7393_initialize(struct v4l2_subdev *sd) | |
370 | { | |
371 | struct adv7393_state *state = to_state(sd); | |
372 | int err = 0; | |
373 | int i; | |
374 | ||
375 | for (i = 0; i < ARRAY_SIZE(adv7393_init_reg_val); i += 2) { | |
376 | ||
377 | err = adv7393_write(sd, adv7393_init_reg_val[i], | |
378 | adv7393_init_reg_val[i+1]); | |
379 | if (err) { | |
380 | v4l2_err(sd, "Error initializing\n"); | |
381 | return err; | |
382 | } | |
383 | } | |
384 | ||
385 | /* Configure for default video standard */ | |
386 | err = adv7393_setoutput(sd, state->output); | |
387 | if (err < 0) { | |
388 | v4l2_err(sd, "Error setting output during init\n"); | |
389 | return -EINVAL; | |
390 | } | |
391 | ||
392 | err = adv7393_setstd(sd, state->std); | |
393 | if (err < 0) { | |
394 | v4l2_err(sd, "Error setting std during init\n"); | |
395 | return -EINVAL; | |
396 | } | |
397 | ||
398 | return err; | |
399 | } | |
400 | ||
401 | static int adv7393_probe(struct i2c_client *client, | |
402 | const struct i2c_device_id *id) | |
403 | { | |
404 | struct adv7393_state *state; | |
405 | int err; | |
406 | ||
407 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
408 | return -ENODEV; | |
409 | ||
410 | v4l_info(client, "chip found @ 0x%x (%s)\n", | |
411 | client->addr << 1, client->adapter->name); | |
412 | ||
413 | state = kzalloc(sizeof(struct adv7393_state), GFP_KERNEL); | |
414 | if (state == NULL) | |
415 | return -ENOMEM; | |
416 | ||
417 | state->reg00 = ADV7393_POWER_MODE_REG_DEFAULT; | |
418 | state->reg01 = 0x00; | |
419 | state->reg02 = 0x20; | |
420 | state->reg35 = ADV7393_HD_MODE_REG6_DEFAULT; | |
421 | state->reg80 = ADV7393_SD_MODE_REG1_DEFAULT; | |
422 | state->reg82 = ADV7393_SD_MODE_REG2_DEFAULT; | |
423 | ||
424 | state->output = ADV7393_COMPOSITE_ID; | |
425 | state->std = V4L2_STD_NTSC; | |
426 | ||
427 | v4l2_i2c_subdev_init(&state->sd, client, &adv7393_ops); | |
428 | ||
429 | v4l2_ctrl_handler_init(&state->hdl, 3); | |
430 | v4l2_ctrl_new_std(&state->hdl, &adv7393_ctrl_ops, | |
431 | V4L2_CID_BRIGHTNESS, ADV7393_BRIGHTNESS_MIN, | |
432 | ADV7393_BRIGHTNESS_MAX, 1, | |
433 | ADV7393_BRIGHTNESS_DEF); | |
434 | v4l2_ctrl_new_std(&state->hdl, &adv7393_ctrl_ops, | |
435 | V4L2_CID_HUE, ADV7393_HUE_MIN, | |
436 | ADV7393_HUE_MAX, 1, | |
437 | ADV7393_HUE_DEF); | |
438 | v4l2_ctrl_new_std(&state->hdl, &adv7393_ctrl_ops, | |
439 | V4L2_CID_GAIN, ADV7393_GAIN_MIN, | |
440 | ADV7393_GAIN_MAX, 1, | |
441 | ADV7393_GAIN_DEF); | |
442 | state->sd.ctrl_handler = &state->hdl; | |
443 | if (state->hdl.error) { | |
444 | int err = state->hdl.error; | |
445 | ||
446 | v4l2_ctrl_handler_free(&state->hdl); | |
447 | kfree(state); | |
448 | return err; | |
449 | } | |
450 | v4l2_ctrl_handler_setup(&state->hdl); | |
451 | ||
452 | err = adv7393_initialize(&state->sd); | |
453 | if (err) { | |
454 | v4l2_ctrl_handler_free(&state->hdl); | |
455 | kfree(state); | |
456 | } | |
457 | return err; | |
458 | } | |
459 | ||
460 | static int adv7393_remove(struct i2c_client *client) | |
461 | { | |
462 | struct v4l2_subdev *sd = i2c_get_clientdata(client); | |
463 | struct adv7393_state *state = to_state(sd); | |
464 | ||
465 | v4l2_device_unregister_subdev(sd); | |
466 | v4l2_ctrl_handler_free(&state->hdl); | |
467 | kfree(state); | |
468 | ||
469 | return 0; | |
470 | } | |
471 | ||
472 | static const struct i2c_device_id adv7393_id[] = { | |
473 | {"adv7393", 0}, | |
474 | {}, | |
475 | }; | |
476 | MODULE_DEVICE_TABLE(i2c, adv7393_id); | |
477 | ||
478 | static struct i2c_driver adv7393_driver = { | |
479 | .driver = { | |
480 | .owner = THIS_MODULE, | |
481 | .name = "adv7393", | |
482 | }, | |
483 | .probe = adv7393_probe, | |
484 | .remove = adv7393_remove, | |
485 | .id_table = adv7393_id, | |
486 | }; | |
487 | module_i2c_driver(adv7393_driver); |