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