Commit | Line | Data |
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418d93ac JM |
1 | /* |
2 | * Driver for MT9P031 CMOS Image Sensor from Aptina | |
3 | * | |
4 | * Copyright (C) 2011, Laurent Pinchart <laurent.pinchart@ideasonboard.com> | |
5 | * Copyright (C) 2011, Javier Martin <javier.martin@vista-silicon.com> | |
6 | * Copyright (C) 2011, Guennadi Liakhovetski <g.liakhovetski@gmx.de> | |
7 | * | |
8 | * Based on the MT9V032 driver and Bastian Hecht's code. | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
14 | ||
d6749258 | 15 | #include <linux/clk.h> |
418d93ac JM |
16 | #include <linux/delay.h> |
17 | #include <linux/device.h> | |
15693b57 | 18 | #include <linux/gpio.h> |
418d93ac JM |
19 | #include <linux/i2c.h> |
20 | #include <linux/log2.h> | |
8d4da37c | 21 | #include <linux/module.h> |
64695905 | 22 | #include <linux/of.h> |
8d4da37c | 23 | #include <linux/of_gpio.h> |
fd9fdb78 | 24 | #include <linux/of_graph.h> |
418d93ac | 25 | #include <linux/pm.h> |
97f21276 | 26 | #include <linux/regulator/consumer.h> |
418d93ac | 27 | #include <linux/slab.h> |
418d93ac JM |
28 | #include <linux/videodev2.h> |
29 | ||
30 | #include <media/mt9p031.h> | |
418d93ac JM |
31 | #include <media/v4l2-ctrls.h> |
32 | #include <media/v4l2-device.h> | |
33 | #include <media/v4l2-subdev.h> | |
34 | ||
08cd43cc LP |
35 | #include "aptina-pll.h" |
36 | ||
418d93ac JM |
37 | #define MT9P031_PIXEL_ARRAY_WIDTH 2752 |
38 | #define MT9P031_PIXEL_ARRAY_HEIGHT 2004 | |
39 | ||
40 | #define MT9P031_CHIP_VERSION 0x00 | |
41 | #define MT9P031_CHIP_VERSION_VALUE 0x1801 | |
42 | #define MT9P031_ROW_START 0x01 | |
43 | #define MT9P031_ROW_START_MIN 0 | |
44 | #define MT9P031_ROW_START_MAX 2004 | |
45 | #define MT9P031_ROW_START_DEF 54 | |
46 | #define MT9P031_COLUMN_START 0x02 | |
47 | #define MT9P031_COLUMN_START_MIN 0 | |
48 | #define MT9P031_COLUMN_START_MAX 2750 | |
49 | #define MT9P031_COLUMN_START_DEF 16 | |
50 | #define MT9P031_WINDOW_HEIGHT 0x03 | |
51 | #define MT9P031_WINDOW_HEIGHT_MIN 2 | |
52 | #define MT9P031_WINDOW_HEIGHT_MAX 2006 | |
53 | #define MT9P031_WINDOW_HEIGHT_DEF 1944 | |
54 | #define MT9P031_WINDOW_WIDTH 0x04 | |
55 | #define MT9P031_WINDOW_WIDTH_MIN 2 | |
56 | #define MT9P031_WINDOW_WIDTH_MAX 2752 | |
57 | #define MT9P031_WINDOW_WIDTH_DEF 2592 | |
58 | #define MT9P031_HORIZONTAL_BLANK 0x05 | |
59 | #define MT9P031_HORIZONTAL_BLANK_MIN 0 | |
60 | #define MT9P031_HORIZONTAL_BLANK_MAX 4095 | |
61 | #define MT9P031_VERTICAL_BLANK 0x06 | |
5266c98b LP |
62 | #define MT9P031_VERTICAL_BLANK_MIN 1 |
63 | #define MT9P031_VERTICAL_BLANK_MAX 4096 | |
64 | #define MT9P031_VERTICAL_BLANK_DEF 26 | |
418d93ac JM |
65 | #define MT9P031_OUTPUT_CONTROL 0x07 |
66 | #define MT9P031_OUTPUT_CONTROL_CEN 2 | |
67 | #define MT9P031_OUTPUT_CONTROL_SYN 1 | |
68 | #define MT9P031_OUTPUT_CONTROL_DEF 0x1f82 | |
69 | #define MT9P031_SHUTTER_WIDTH_UPPER 0x08 | |
70 | #define MT9P031_SHUTTER_WIDTH_LOWER 0x09 | |
71 | #define MT9P031_SHUTTER_WIDTH_MIN 1 | |
72 | #define MT9P031_SHUTTER_WIDTH_MAX 1048575 | |
73 | #define MT9P031_SHUTTER_WIDTH_DEF 1943 | |
74 | #define MT9P031_PLL_CONTROL 0x10 | |
75 | #define MT9P031_PLL_CONTROL_PWROFF 0x0050 | |
76 | #define MT9P031_PLL_CONTROL_PWRON 0x0051 | |
77 | #define MT9P031_PLL_CONTROL_USEPLL 0x0052 | |
78 | #define MT9P031_PLL_CONFIG_1 0x11 | |
79 | #define MT9P031_PLL_CONFIG_2 0x12 | |
80 | #define MT9P031_PIXEL_CLOCK_CONTROL 0x0a | |
a970449e LP |
81 | #define MT9P031_PIXEL_CLOCK_INVERT (1 << 15) |
82 | #define MT9P031_PIXEL_CLOCK_SHIFT(n) ((n) << 8) | |
83 | #define MT9P031_PIXEL_CLOCK_DIVIDE(n) ((n) << 0) | |
418d93ac JM |
84 | #define MT9P031_FRAME_RESTART 0x0b |
85 | #define MT9P031_SHUTTER_DELAY 0x0c | |
86 | #define MT9P031_RST 0x0d | |
87 | #define MT9P031_RST_ENABLE 1 | |
88 | #define MT9P031_RST_DISABLE 0 | |
89 | #define MT9P031_READ_MODE_1 0x1e | |
90 | #define MT9P031_READ_MODE_2 0x20 | |
91 | #define MT9P031_READ_MODE_2_ROW_MIR (1 << 15) | |
92 | #define MT9P031_READ_MODE_2_COL_MIR (1 << 14) | |
93 | #define MT9P031_READ_MODE_2_ROW_BLC (1 << 6) | |
94 | #define MT9P031_ROW_ADDRESS_MODE 0x22 | |
95 | #define MT9P031_COLUMN_ADDRESS_MODE 0x23 | |
96 | #define MT9P031_GLOBAL_GAIN 0x35 | |
97 | #define MT9P031_GLOBAL_GAIN_MIN 8 | |
98 | #define MT9P031_GLOBAL_GAIN_MAX 1024 | |
99 | #define MT9P031_GLOBAL_GAIN_DEF 8 | |
100 | #define MT9P031_GLOBAL_GAIN_MULT (1 << 6) | |
dfea0019 | 101 | #define MT9P031_ROW_BLACK_TARGET 0x49 |
418d93ac | 102 | #define MT9P031_ROW_BLACK_DEF_OFFSET 0x4b |
dfea0019 LP |
103 | #define MT9P031_GREEN1_OFFSET 0x60 |
104 | #define MT9P031_GREEN2_OFFSET 0x61 | |
105 | #define MT9P031_BLACK_LEVEL_CALIBRATION 0x62 | |
106 | #define MT9P031_BLC_MANUAL_BLC (1 << 0) | |
107 | #define MT9P031_RED_OFFSET 0x63 | |
108 | #define MT9P031_BLUE_OFFSET 0x64 | |
418d93ac JM |
109 | #define MT9P031_TEST_PATTERN 0xa0 |
110 | #define MT9P031_TEST_PATTERN_SHIFT 3 | |
111 | #define MT9P031_TEST_PATTERN_ENABLE (1 << 0) | |
112 | #define MT9P031_TEST_PATTERN_DISABLE (0 << 0) | |
113 | #define MT9P031_TEST_PATTERN_GREEN 0xa1 | |
114 | #define MT9P031_TEST_PATTERN_RED 0xa2 | |
115 | #define MT9P031_TEST_PATTERN_BLUE 0xa3 | |
116 | ||
1c542ba8 LP |
117 | enum mt9p031_model { |
118 | MT9P031_MODEL_COLOR, | |
119 | MT9P031_MODEL_MONOCHROME, | |
120 | }; | |
121 | ||
418d93ac JM |
122 | struct mt9p031 { |
123 | struct v4l2_subdev subdev; | |
124 | struct media_pad pad; | |
125 | struct v4l2_rect crop; /* Sensor window */ | |
126 | struct v4l2_mbus_framefmt format; | |
418d93ac JM |
127 | struct mt9p031_platform_data *pdata; |
128 | struct mutex power_lock; /* lock to protect power_count */ | |
129 | int power_count; | |
418d93ac | 130 | |
d6749258 | 131 | struct clk *clk; |
7997196c | 132 | struct regulator_bulk_data regulators[3]; |
97f21276 | 133 | |
1c542ba8 | 134 | enum mt9p031_model model; |
08cd43cc | 135 | struct aptina_pll pll; |
a970449e LP |
136 | unsigned int clk_div; |
137 | bool use_pll; | |
15693b57 | 138 | int reset; |
418d93ac | 139 | |
dfea0019 LP |
140 | struct v4l2_ctrl_handler ctrls; |
141 | struct v4l2_ctrl *blc_auto; | |
142 | struct v4l2_ctrl *blc_offset; | |
143 | ||
418d93ac JM |
144 | /* Registers cache */ |
145 | u16 output_control; | |
146 | u16 mode2; | |
147 | }; | |
148 | ||
149 | static struct mt9p031 *to_mt9p031(struct v4l2_subdev *sd) | |
150 | { | |
151 | return container_of(sd, struct mt9p031, subdev); | |
152 | } | |
153 | ||
154 | static int mt9p031_read(struct i2c_client *client, u8 reg) | |
155 | { | |
c27e3050 | 156 | return i2c_smbus_read_word_swapped(client, reg); |
418d93ac JM |
157 | } |
158 | ||
159 | static int mt9p031_write(struct i2c_client *client, u8 reg, u16 data) | |
160 | { | |
c27e3050 | 161 | return i2c_smbus_write_word_swapped(client, reg, data); |
418d93ac JM |
162 | } |
163 | ||
164 | static int mt9p031_set_output_control(struct mt9p031 *mt9p031, u16 clear, | |
165 | u16 set) | |
166 | { | |
167 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
168 | u16 value = (mt9p031->output_control & ~clear) | set; | |
169 | int ret; | |
170 | ||
171 | ret = mt9p031_write(client, MT9P031_OUTPUT_CONTROL, value); | |
172 | if (ret < 0) | |
173 | return ret; | |
174 | ||
175 | mt9p031->output_control = value; | |
176 | return 0; | |
177 | } | |
178 | ||
179 | static int mt9p031_set_mode2(struct mt9p031 *mt9p031, u16 clear, u16 set) | |
180 | { | |
181 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
182 | u16 value = (mt9p031->mode2 & ~clear) | set; | |
183 | int ret; | |
184 | ||
185 | ret = mt9p031_write(client, MT9P031_READ_MODE_2, value); | |
186 | if (ret < 0) | |
187 | return ret; | |
188 | ||
189 | mt9p031->mode2 = value; | |
190 | return 0; | |
191 | } | |
192 | ||
193 | static int mt9p031_reset(struct mt9p031 *mt9p031) | |
194 | { | |
195 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
196 | int ret; | |
197 | ||
198 | /* Disable chip output, synchronous option update */ | |
199 | ret = mt9p031_write(client, MT9P031_RST, MT9P031_RST_ENABLE); | |
200 | if (ret < 0) | |
201 | return ret; | |
202 | ret = mt9p031_write(client, MT9P031_RST, MT9P031_RST_DISABLE); | |
203 | if (ret < 0) | |
204 | return ret; | |
205 | ||
a970449e LP |
206 | ret = mt9p031_write(client, MT9P031_PIXEL_CLOCK_CONTROL, |
207 | MT9P031_PIXEL_CLOCK_DIVIDE(mt9p031->clk_div)); | |
208 | if (ret < 0) | |
209 | return ret; | |
210 | ||
418d93ac JM |
211 | return mt9p031_set_output_control(mt9p031, MT9P031_OUTPUT_CONTROL_CEN, |
212 | 0); | |
213 | } | |
214 | ||
d6749258 | 215 | static int mt9p031_clk_setup(struct mt9p031 *mt9p031) |
418d93ac | 216 | { |
08cd43cc LP |
217 | static const struct aptina_pll_limits limits = { |
218 | .ext_clock_min = 6000000, | |
219 | .ext_clock_max = 27000000, | |
220 | .int_clock_min = 2000000, | |
221 | .int_clock_max = 13500000, | |
222 | .out_clock_min = 180000000, | |
223 | .out_clock_max = 360000000, | |
224 | .pix_clock_max = 96000000, | |
225 | .n_min = 1, | |
226 | .n_max = 64, | |
227 | .m_min = 16, | |
228 | .m_max = 255, | |
229 | .p1_min = 1, | |
230 | .p1_max = 128, | |
231 | }; | |
232 | ||
418d93ac | 233 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
08cd43cc | 234 | struct mt9p031_platform_data *pdata = mt9p031->pdata; |
ee2d16d7 | 235 | int ret; |
418d93ac | 236 | |
d6749258 LP |
237 | mt9p031->clk = devm_clk_get(&client->dev, NULL); |
238 | if (IS_ERR(mt9p031->clk)) | |
239 | return PTR_ERR(mt9p031->clk); | |
240 | ||
ee2d16d7 LP |
241 | ret = clk_set_rate(mt9p031->clk, pdata->ext_freq); |
242 | if (ret < 0) | |
243 | return ret; | |
d6749258 | 244 | |
a970449e LP |
245 | /* If the external clock frequency is out of bounds for the PLL use the |
246 | * pixel clock divider only and disable the PLL. | |
247 | */ | |
248 | if (pdata->ext_freq > limits.ext_clock_max) { | |
249 | unsigned int div; | |
250 | ||
251 | div = DIV_ROUND_UP(pdata->ext_freq, pdata->target_freq); | |
252 | div = roundup_pow_of_two(div) / 2; | |
253 | ||
254 | mt9p031->clk_div = max_t(unsigned int, div, 64); | |
255 | mt9p031->use_pll = false; | |
256 | ||
257 | return 0; | |
258 | } | |
d6749258 | 259 | |
08cd43cc LP |
260 | mt9p031->pll.ext_clock = pdata->ext_freq; |
261 | mt9p031->pll.pix_clock = pdata->target_freq; | |
a970449e | 262 | mt9p031->use_pll = true; |
418d93ac | 263 | |
08cd43cc | 264 | return aptina_pll_calculate(&client->dev, &limits, &mt9p031->pll); |
418d93ac JM |
265 | } |
266 | ||
267 | static int mt9p031_pll_enable(struct mt9p031 *mt9p031) | |
268 | { | |
269 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
270 | int ret; | |
271 | ||
a970449e LP |
272 | if (!mt9p031->use_pll) |
273 | return 0; | |
274 | ||
418d93ac JM |
275 | ret = mt9p031_write(client, MT9P031_PLL_CONTROL, |
276 | MT9P031_PLL_CONTROL_PWRON); | |
277 | if (ret < 0) | |
278 | return ret; | |
279 | ||
280 | ret = mt9p031_write(client, MT9P031_PLL_CONFIG_1, | |
08cd43cc | 281 | (mt9p031->pll.m << 8) | (mt9p031->pll.n - 1)); |
418d93ac JM |
282 | if (ret < 0) |
283 | return ret; | |
284 | ||
08cd43cc | 285 | ret = mt9p031_write(client, MT9P031_PLL_CONFIG_2, mt9p031->pll.p1 - 1); |
418d93ac JM |
286 | if (ret < 0) |
287 | return ret; | |
288 | ||
289 | usleep_range(1000, 2000); | |
290 | ret = mt9p031_write(client, MT9P031_PLL_CONTROL, | |
291 | MT9P031_PLL_CONTROL_PWRON | | |
292 | MT9P031_PLL_CONTROL_USEPLL); | |
293 | return ret; | |
294 | } | |
295 | ||
296 | static inline int mt9p031_pll_disable(struct mt9p031 *mt9p031) | |
297 | { | |
298 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
299 | ||
a970449e LP |
300 | if (!mt9p031->use_pll) |
301 | return 0; | |
302 | ||
418d93ac JM |
303 | return mt9p031_write(client, MT9P031_PLL_CONTROL, |
304 | MT9P031_PLL_CONTROL_PWROFF); | |
305 | } | |
306 | ||
307 | static int mt9p031_power_on(struct mt9p031 *mt9p031) | |
308 | { | |
7997196c LP |
309 | int ret; |
310 | ||
418d93ac | 311 | /* Ensure RESET_BAR is low */ |
2660a22b | 312 | if (gpio_is_valid(mt9p031->reset)) { |
15693b57 | 313 | gpio_set_value(mt9p031->reset, 0); |
418d93ac JM |
314 | usleep_range(1000, 2000); |
315 | } | |
316 | ||
97f21276 | 317 | /* Bring up the supplies */ |
7997196c LP |
318 | ret = regulator_bulk_enable(ARRAY_SIZE(mt9p031->regulators), |
319 | mt9p031->regulators); | |
320 | if (ret < 0) | |
321 | return ret; | |
97f21276 | 322 | |
e8e45593 | 323 | /* Enable clock */ |
ee2d16d7 LP |
324 | if (mt9p031->clk) { |
325 | ret = clk_prepare_enable(mt9p031->clk); | |
326 | if (ret) { | |
327 | regulator_bulk_disable(ARRAY_SIZE(mt9p031->regulators), | |
328 | mt9p031->regulators); | |
329 | return ret; | |
330 | } | |
331 | } | |
418d93ac JM |
332 | |
333 | /* Now RESET_BAR must be high */ | |
2660a22b | 334 | if (gpio_is_valid(mt9p031->reset)) { |
15693b57 | 335 | gpio_set_value(mt9p031->reset, 1); |
418d93ac JM |
336 | usleep_range(1000, 2000); |
337 | } | |
338 | ||
339 | return 0; | |
340 | } | |
341 | ||
342 | static void mt9p031_power_off(struct mt9p031 *mt9p031) | |
343 | { | |
2660a22b | 344 | if (gpio_is_valid(mt9p031->reset)) { |
15693b57 | 345 | gpio_set_value(mt9p031->reset, 0); |
418d93ac JM |
346 | usleep_range(1000, 2000); |
347 | } | |
348 | ||
7997196c LP |
349 | regulator_bulk_disable(ARRAY_SIZE(mt9p031->regulators), |
350 | mt9p031->regulators); | |
97f21276 | 351 | |
d6749258 LP |
352 | if (mt9p031->clk) |
353 | clk_disable_unprepare(mt9p031->clk); | |
418d93ac JM |
354 | } |
355 | ||
356 | static int __mt9p031_set_power(struct mt9p031 *mt9p031, bool on) | |
357 | { | |
358 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
359 | int ret; | |
360 | ||
361 | if (!on) { | |
362 | mt9p031_power_off(mt9p031); | |
363 | return 0; | |
364 | } | |
365 | ||
366 | ret = mt9p031_power_on(mt9p031); | |
367 | if (ret < 0) | |
368 | return ret; | |
369 | ||
370 | ret = mt9p031_reset(mt9p031); | |
371 | if (ret < 0) { | |
372 | dev_err(&client->dev, "Failed to reset the camera\n"); | |
373 | return ret; | |
374 | } | |
375 | ||
376 | return v4l2_ctrl_handler_setup(&mt9p031->ctrls); | |
377 | } | |
378 | ||
379 | /* ----------------------------------------------------------------------------- | |
380 | * V4L2 subdev video operations | |
381 | */ | |
382 | ||
383 | static int mt9p031_set_params(struct mt9p031 *mt9p031) | |
384 | { | |
385 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
386 | struct v4l2_mbus_framefmt *format = &mt9p031->format; | |
387 | const struct v4l2_rect *crop = &mt9p031->crop; | |
388 | unsigned int hblank; | |
389 | unsigned int vblank; | |
390 | unsigned int xskip; | |
391 | unsigned int yskip; | |
392 | unsigned int xbin; | |
393 | unsigned int ybin; | |
394 | int ret; | |
395 | ||
396 | /* Windows position and size. | |
397 | * | |
398 | * TODO: Make sure the start coordinates and window size match the | |
399 | * skipping, binning and mirroring (see description of registers 2 and 4 | |
400 | * in table 13, and Binning section on page 41). | |
401 | */ | |
402 | ret = mt9p031_write(client, MT9P031_COLUMN_START, crop->left); | |
403 | if (ret < 0) | |
404 | return ret; | |
405 | ret = mt9p031_write(client, MT9P031_ROW_START, crop->top); | |
406 | if (ret < 0) | |
407 | return ret; | |
408 | ret = mt9p031_write(client, MT9P031_WINDOW_WIDTH, crop->width - 1); | |
409 | if (ret < 0) | |
410 | return ret; | |
411 | ret = mt9p031_write(client, MT9P031_WINDOW_HEIGHT, crop->height - 1); | |
412 | if (ret < 0) | |
413 | return ret; | |
414 | ||
415 | /* Row and column binning and skipping. Use the maximum binning value | |
416 | * compatible with the skipping settings. | |
417 | */ | |
418 | xskip = DIV_ROUND_CLOSEST(crop->width, format->width); | |
419 | yskip = DIV_ROUND_CLOSEST(crop->height, format->height); | |
420 | xbin = 1 << (ffs(xskip) - 1); | |
421 | ybin = 1 << (ffs(yskip) - 1); | |
422 | ||
423 | ret = mt9p031_write(client, MT9P031_COLUMN_ADDRESS_MODE, | |
424 | ((xbin - 1) << 4) | (xskip - 1)); | |
425 | if (ret < 0) | |
426 | return ret; | |
427 | ret = mt9p031_write(client, MT9P031_ROW_ADDRESS_MODE, | |
428 | ((ybin - 1) << 4) | (yskip - 1)); | |
429 | if (ret < 0) | |
430 | return ret; | |
431 | ||
432 | /* Blanking - use minimum value for horizontal blanking and default | |
433 | * value for vertical blanking. | |
434 | */ | |
5266c98b | 435 | hblank = 346 * ybin + 64 + (80 >> min_t(unsigned int, xbin, 3)); |
418d93ac JM |
436 | vblank = MT9P031_VERTICAL_BLANK_DEF; |
437 | ||
5266c98b | 438 | ret = mt9p031_write(client, MT9P031_HORIZONTAL_BLANK, hblank - 1); |
418d93ac JM |
439 | if (ret < 0) |
440 | return ret; | |
5266c98b | 441 | ret = mt9p031_write(client, MT9P031_VERTICAL_BLANK, vblank - 1); |
418d93ac JM |
442 | if (ret < 0) |
443 | return ret; | |
444 | ||
445 | return ret; | |
446 | } | |
447 | ||
448 | static int mt9p031_s_stream(struct v4l2_subdev *subdev, int enable) | |
449 | { | |
450 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
451 | int ret; | |
452 | ||
453 | if (!enable) { | |
454 | /* Stop sensor readout */ | |
455 | ret = mt9p031_set_output_control(mt9p031, | |
456 | MT9P031_OUTPUT_CONTROL_CEN, 0); | |
457 | if (ret < 0) | |
458 | return ret; | |
459 | ||
460 | return mt9p031_pll_disable(mt9p031); | |
461 | } | |
462 | ||
463 | ret = mt9p031_set_params(mt9p031); | |
464 | if (ret < 0) | |
465 | return ret; | |
466 | ||
467 | /* Switch to master "normal" mode */ | |
468 | ret = mt9p031_set_output_control(mt9p031, 0, | |
469 | MT9P031_OUTPUT_CONTROL_CEN); | |
470 | if (ret < 0) | |
471 | return ret; | |
472 | ||
473 | return mt9p031_pll_enable(mt9p031); | |
474 | } | |
475 | ||
476 | static int mt9p031_enum_mbus_code(struct v4l2_subdev *subdev, | |
477 | struct v4l2_subdev_fh *fh, | |
478 | struct v4l2_subdev_mbus_code_enum *code) | |
479 | { | |
480 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
481 | ||
482 | if (code->pad || code->index) | |
483 | return -EINVAL; | |
484 | ||
485 | code->code = mt9p031->format.code; | |
486 | return 0; | |
487 | } | |
488 | ||
489 | static int mt9p031_enum_frame_size(struct v4l2_subdev *subdev, | |
490 | struct v4l2_subdev_fh *fh, | |
491 | struct v4l2_subdev_frame_size_enum *fse) | |
492 | { | |
493 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
494 | ||
495 | if (fse->index >= 8 || fse->code != mt9p031->format.code) | |
496 | return -EINVAL; | |
497 | ||
498 | fse->min_width = MT9P031_WINDOW_WIDTH_DEF | |
499 | / min_t(unsigned int, 7, fse->index + 1); | |
500 | fse->max_width = fse->min_width; | |
501 | fse->min_height = MT9P031_WINDOW_HEIGHT_DEF / (fse->index + 1); | |
502 | fse->max_height = fse->min_height; | |
503 | ||
504 | return 0; | |
505 | } | |
506 | ||
507 | static struct v4l2_mbus_framefmt * | |
508 | __mt9p031_get_pad_format(struct mt9p031 *mt9p031, struct v4l2_subdev_fh *fh, | |
509 | unsigned int pad, u32 which) | |
510 | { | |
511 | switch (which) { | |
512 | case V4L2_SUBDEV_FORMAT_TRY: | |
513 | return v4l2_subdev_get_try_format(fh, pad); | |
514 | case V4L2_SUBDEV_FORMAT_ACTIVE: | |
515 | return &mt9p031->format; | |
516 | default: | |
517 | return NULL; | |
518 | } | |
519 | } | |
520 | ||
521 | static struct v4l2_rect * | |
522 | __mt9p031_get_pad_crop(struct mt9p031 *mt9p031, struct v4l2_subdev_fh *fh, | |
523 | unsigned int pad, u32 which) | |
524 | { | |
525 | switch (which) { | |
526 | case V4L2_SUBDEV_FORMAT_TRY: | |
527 | return v4l2_subdev_get_try_crop(fh, pad); | |
528 | case V4L2_SUBDEV_FORMAT_ACTIVE: | |
529 | return &mt9p031->crop; | |
530 | default: | |
531 | return NULL; | |
532 | } | |
533 | } | |
534 | ||
535 | static int mt9p031_get_format(struct v4l2_subdev *subdev, | |
536 | struct v4l2_subdev_fh *fh, | |
537 | struct v4l2_subdev_format *fmt) | |
538 | { | |
539 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
540 | ||
541 | fmt->format = *__mt9p031_get_pad_format(mt9p031, fh, fmt->pad, | |
542 | fmt->which); | |
543 | return 0; | |
544 | } | |
545 | ||
546 | static int mt9p031_set_format(struct v4l2_subdev *subdev, | |
547 | struct v4l2_subdev_fh *fh, | |
548 | struct v4l2_subdev_format *format) | |
549 | { | |
550 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
551 | struct v4l2_mbus_framefmt *__format; | |
552 | struct v4l2_rect *__crop; | |
553 | unsigned int width; | |
554 | unsigned int height; | |
555 | unsigned int hratio; | |
556 | unsigned int vratio; | |
557 | ||
558 | __crop = __mt9p031_get_pad_crop(mt9p031, fh, format->pad, | |
559 | format->which); | |
560 | ||
561 | /* Clamp the width and height to avoid dividing by zero. */ | |
562 | width = clamp_t(unsigned int, ALIGN(format->format.width, 2), | |
f90580ca RR |
563 | max_t(unsigned int, __crop->width / 7, |
564 | MT9P031_WINDOW_WIDTH_MIN), | |
418d93ac JM |
565 | __crop->width); |
566 | height = clamp_t(unsigned int, ALIGN(format->format.height, 2), | |
f90580ca RR |
567 | max_t(unsigned int, __crop->height / 8, |
568 | MT9P031_WINDOW_HEIGHT_MIN), | |
569 | __crop->height); | |
418d93ac JM |
570 | |
571 | hratio = DIV_ROUND_CLOSEST(__crop->width, width); | |
572 | vratio = DIV_ROUND_CLOSEST(__crop->height, height); | |
573 | ||
574 | __format = __mt9p031_get_pad_format(mt9p031, fh, format->pad, | |
575 | format->which); | |
576 | __format->width = __crop->width / hratio; | |
577 | __format->height = __crop->height / vratio; | |
578 | ||
579 | format->format = *__format; | |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
584 | static int mt9p031_get_crop(struct v4l2_subdev *subdev, | |
585 | struct v4l2_subdev_fh *fh, | |
586 | struct v4l2_subdev_crop *crop) | |
587 | { | |
588 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
589 | ||
590 | crop->rect = *__mt9p031_get_pad_crop(mt9p031, fh, crop->pad, | |
591 | crop->which); | |
592 | return 0; | |
593 | } | |
594 | ||
595 | static int mt9p031_set_crop(struct v4l2_subdev *subdev, | |
596 | struct v4l2_subdev_fh *fh, | |
597 | struct v4l2_subdev_crop *crop) | |
598 | { | |
599 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
600 | struct v4l2_mbus_framefmt *__format; | |
601 | struct v4l2_rect *__crop; | |
602 | struct v4l2_rect rect; | |
603 | ||
604 | /* Clamp the crop rectangle boundaries and align them to a multiple of 2 | |
605 | * pixels to ensure a GRBG Bayer pattern. | |
606 | */ | |
607 | rect.left = clamp(ALIGN(crop->rect.left, 2), MT9P031_COLUMN_START_MIN, | |
608 | MT9P031_COLUMN_START_MAX); | |
609 | rect.top = clamp(ALIGN(crop->rect.top, 2), MT9P031_ROW_START_MIN, | |
610 | MT9P031_ROW_START_MAX); | |
f90580ca RR |
611 | rect.width = clamp_t(unsigned int, ALIGN(crop->rect.width, 2), |
612 | MT9P031_WINDOW_WIDTH_MIN, | |
613 | MT9P031_WINDOW_WIDTH_MAX); | |
614 | rect.height = clamp_t(unsigned int, ALIGN(crop->rect.height, 2), | |
615 | MT9P031_WINDOW_HEIGHT_MIN, | |
616 | MT9P031_WINDOW_HEIGHT_MAX); | |
617 | ||
618 | rect.width = min_t(unsigned int, rect.width, | |
619 | MT9P031_PIXEL_ARRAY_WIDTH - rect.left); | |
620 | rect.height = min_t(unsigned int, rect.height, | |
621 | MT9P031_PIXEL_ARRAY_HEIGHT - rect.top); | |
418d93ac JM |
622 | |
623 | __crop = __mt9p031_get_pad_crop(mt9p031, fh, crop->pad, crop->which); | |
624 | ||
625 | if (rect.width != __crop->width || rect.height != __crop->height) { | |
626 | /* Reset the output image size if the crop rectangle size has | |
627 | * been modified. | |
628 | */ | |
629 | __format = __mt9p031_get_pad_format(mt9p031, fh, crop->pad, | |
630 | crop->which); | |
631 | __format->width = rect.width; | |
632 | __format->height = rect.height; | |
633 | } | |
634 | ||
635 | *__crop = rect; | |
636 | crop->rect = rect; | |
637 | ||
638 | return 0; | |
639 | } | |
640 | ||
641 | /* ----------------------------------------------------------------------------- | |
642 | * V4L2 subdev control operations | |
643 | */ | |
644 | ||
dfea0019 LP |
645 | #define V4L2_CID_BLC_AUTO (V4L2_CID_USER_BASE | 0x1002) |
646 | #define V4L2_CID_BLC_TARGET_LEVEL (V4L2_CID_USER_BASE | 0x1003) | |
647 | #define V4L2_CID_BLC_ANALOG_OFFSET (V4L2_CID_USER_BASE | 0x1004) | |
648 | #define V4L2_CID_BLC_DIGITAL_OFFSET (V4L2_CID_USER_BASE | 0x1005) | |
418d93ac JM |
649 | |
650 | static int mt9p031_s_ctrl(struct v4l2_ctrl *ctrl) | |
651 | { | |
652 | struct mt9p031 *mt9p031 = | |
653 | container_of(ctrl->handler, struct mt9p031, ctrls); | |
654 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
655 | u16 data; | |
656 | int ret; | |
657 | ||
658 | switch (ctrl->id) { | |
659 | case V4L2_CID_EXPOSURE: | |
660 | ret = mt9p031_write(client, MT9P031_SHUTTER_WIDTH_UPPER, | |
661 | (ctrl->val >> 16) & 0xffff); | |
662 | if (ret < 0) | |
663 | return ret; | |
664 | ||
665 | return mt9p031_write(client, MT9P031_SHUTTER_WIDTH_LOWER, | |
666 | ctrl->val & 0xffff); | |
667 | ||
668 | case V4L2_CID_GAIN: | |
669 | /* Gain is controlled by 2 analog stages and a digital stage. | |
670 | * Valid values for the 3 stages are | |
671 | * | |
672 | * Stage Min Max Step | |
673 | * ------------------------------------------ | |
674 | * First analog stage x1 x2 1 | |
675 | * Second analog stage x1 x4 0.125 | |
676 | * Digital stage x1 x16 0.125 | |
677 | * | |
678 | * To minimize noise, the gain stages should be used in the | |
679 | * second analog stage, first analog stage, digital stage order. | |
680 | * Gain from a previous stage should be pushed to its maximum | |
681 | * value before the next stage is used. | |
682 | */ | |
683 | if (ctrl->val <= 32) { | |
684 | data = ctrl->val; | |
685 | } else if (ctrl->val <= 64) { | |
686 | ctrl->val &= ~1; | |
687 | data = (1 << 6) | (ctrl->val >> 1); | |
688 | } else { | |
689 | ctrl->val &= ~7; | |
690 | data = ((ctrl->val - 64) << 5) | (1 << 6) | 32; | |
691 | } | |
692 | ||
693 | return mt9p031_write(client, MT9P031_GLOBAL_GAIN, data); | |
694 | ||
695 | case V4L2_CID_HFLIP: | |
696 | if (ctrl->val) | |
697 | return mt9p031_set_mode2(mt9p031, | |
698 | 0, MT9P031_READ_MODE_2_COL_MIR); | |
699 | else | |
700 | return mt9p031_set_mode2(mt9p031, | |
701 | MT9P031_READ_MODE_2_COL_MIR, 0); | |
702 | ||
703 | case V4L2_CID_VFLIP: | |
704 | if (ctrl->val) | |
705 | return mt9p031_set_mode2(mt9p031, | |
706 | 0, MT9P031_READ_MODE_2_ROW_MIR); | |
707 | else | |
708 | return mt9p031_set_mode2(mt9p031, | |
709 | MT9P031_READ_MODE_2_ROW_MIR, 0); | |
710 | ||
711 | case V4L2_CID_TEST_PATTERN: | |
712 | if (!ctrl->val) { | |
dfea0019 LP |
713 | /* Restore the black level compensation settings. */ |
714 | if (mt9p031->blc_auto->cur.val != 0) { | |
715 | ret = mt9p031_s_ctrl(mt9p031->blc_auto); | |
716 | if (ret < 0) | |
717 | return ret; | |
718 | } | |
719 | if (mt9p031->blc_offset->cur.val != 0) { | |
720 | ret = mt9p031_s_ctrl(mt9p031->blc_offset); | |
721 | if (ret < 0) | |
722 | return ret; | |
723 | } | |
418d93ac JM |
724 | return mt9p031_write(client, MT9P031_TEST_PATTERN, |
725 | MT9P031_TEST_PATTERN_DISABLE); | |
726 | } | |
727 | ||
728 | ret = mt9p031_write(client, MT9P031_TEST_PATTERN_GREEN, 0x05a0); | |
729 | if (ret < 0) | |
730 | return ret; | |
731 | ret = mt9p031_write(client, MT9P031_TEST_PATTERN_RED, 0x0a50); | |
732 | if (ret < 0) | |
733 | return ret; | |
734 | ret = mt9p031_write(client, MT9P031_TEST_PATTERN_BLUE, 0x0aa0); | |
735 | if (ret < 0) | |
736 | return ret; | |
737 | ||
dfea0019 LP |
738 | /* Disable digital black level compensation when using a test |
739 | * pattern. | |
740 | */ | |
418d93ac JM |
741 | ret = mt9p031_set_mode2(mt9p031, MT9P031_READ_MODE_2_ROW_BLC, |
742 | 0); | |
743 | if (ret < 0) | |
744 | return ret; | |
dfea0019 | 745 | |
418d93ac JM |
746 | ret = mt9p031_write(client, MT9P031_ROW_BLACK_DEF_OFFSET, 0); |
747 | if (ret < 0) | |
748 | return ret; | |
749 | ||
750 | return mt9p031_write(client, MT9P031_TEST_PATTERN, | |
751 | ((ctrl->val - 1) << MT9P031_TEST_PATTERN_SHIFT) | |
752 | | MT9P031_TEST_PATTERN_ENABLE); | |
dfea0019 LP |
753 | |
754 | case V4L2_CID_BLC_AUTO: | |
755 | ret = mt9p031_set_mode2(mt9p031, | |
756 | ctrl->val ? 0 : MT9P031_READ_MODE_2_ROW_BLC, | |
757 | ctrl->val ? MT9P031_READ_MODE_2_ROW_BLC : 0); | |
758 | if (ret < 0) | |
759 | return ret; | |
760 | ||
761 | return mt9p031_write(client, MT9P031_BLACK_LEVEL_CALIBRATION, | |
762 | ctrl->val ? 0 : MT9P031_BLC_MANUAL_BLC); | |
763 | ||
764 | case V4L2_CID_BLC_TARGET_LEVEL: | |
765 | return mt9p031_write(client, MT9P031_ROW_BLACK_TARGET, | |
766 | ctrl->val); | |
767 | ||
768 | case V4L2_CID_BLC_ANALOG_OFFSET: | |
769 | data = ctrl->val & ((1 << 9) - 1); | |
770 | ||
771 | ret = mt9p031_write(client, MT9P031_GREEN1_OFFSET, data); | |
772 | if (ret < 0) | |
773 | return ret; | |
774 | ret = mt9p031_write(client, MT9P031_GREEN2_OFFSET, data); | |
775 | if (ret < 0) | |
776 | return ret; | |
777 | ret = mt9p031_write(client, MT9P031_RED_OFFSET, data); | |
778 | if (ret < 0) | |
779 | return ret; | |
780 | return mt9p031_write(client, MT9P031_BLUE_OFFSET, data); | |
781 | ||
782 | case V4L2_CID_BLC_DIGITAL_OFFSET: | |
783 | return mt9p031_write(client, MT9P031_ROW_BLACK_DEF_OFFSET, | |
784 | ctrl->val & ((1 << 12) - 1)); | |
418d93ac | 785 | } |
dfea0019 | 786 | |
418d93ac JM |
787 | return 0; |
788 | } | |
789 | ||
790 | static struct v4l2_ctrl_ops mt9p031_ctrl_ops = { | |
791 | .s_ctrl = mt9p031_s_ctrl, | |
792 | }; | |
793 | ||
794 | static const char * const mt9p031_test_pattern_menu[] = { | |
795 | "Disabled", | |
796 | "Color Field", | |
797 | "Horizontal Gradient", | |
798 | "Vertical Gradient", | |
799 | "Diagonal Gradient", | |
800 | "Classic Test Pattern", | |
801 | "Walking 1s", | |
802 | "Monochrome Horizontal Bars", | |
803 | "Monochrome Vertical Bars", | |
804 | "Vertical Color Bars", | |
805 | }; | |
806 | ||
807 | static const struct v4l2_ctrl_config mt9p031_ctrls[] = { | |
808 | { | |
dfea0019 LP |
809 | .ops = &mt9p031_ctrl_ops, |
810 | .id = V4L2_CID_BLC_AUTO, | |
811 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
812 | .name = "BLC, Auto", | |
813 | .min = 0, | |
814 | .max = 1, | |
815 | .step = 1, | |
816 | .def = 1, | |
817 | .flags = 0, | |
818 | }, { | |
819 | .ops = &mt9p031_ctrl_ops, | |
820 | .id = V4L2_CID_BLC_TARGET_LEVEL, | |
821 | .type = V4L2_CTRL_TYPE_INTEGER, | |
822 | .name = "BLC Target Level", | |
823 | .min = 0, | |
824 | .max = 4095, | |
825 | .step = 1, | |
826 | .def = 168, | |
827 | .flags = 0, | |
828 | }, { | |
829 | .ops = &mt9p031_ctrl_ops, | |
830 | .id = V4L2_CID_BLC_ANALOG_OFFSET, | |
831 | .type = V4L2_CTRL_TYPE_INTEGER, | |
832 | .name = "BLC Analog Offset", | |
833 | .min = -255, | |
834 | .max = 255, | |
835 | .step = 1, | |
836 | .def = 32, | |
837 | .flags = 0, | |
838 | }, { | |
839 | .ops = &mt9p031_ctrl_ops, | |
840 | .id = V4L2_CID_BLC_DIGITAL_OFFSET, | |
841 | .type = V4L2_CTRL_TYPE_INTEGER, | |
842 | .name = "BLC Digital Offset", | |
843 | .min = -2048, | |
844 | .max = 2047, | |
845 | .step = 1, | |
846 | .def = 40, | |
847 | .flags = 0, | |
418d93ac JM |
848 | } |
849 | }; | |
850 | ||
851 | /* ----------------------------------------------------------------------------- | |
852 | * V4L2 subdev core operations | |
853 | */ | |
854 | ||
855 | static int mt9p031_set_power(struct v4l2_subdev *subdev, int on) | |
856 | { | |
857 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
858 | int ret = 0; | |
859 | ||
860 | mutex_lock(&mt9p031->power_lock); | |
861 | ||
862 | /* If the power count is modified from 0 to != 0 or from != 0 to 0, | |
863 | * update the power state. | |
864 | */ | |
865 | if (mt9p031->power_count == !on) { | |
866 | ret = __mt9p031_set_power(mt9p031, !!on); | |
867 | if (ret < 0) | |
868 | goto out; | |
869 | } | |
870 | ||
871 | /* Update the power count. */ | |
872 | mt9p031->power_count += on ? 1 : -1; | |
873 | WARN_ON(mt9p031->power_count < 0); | |
874 | ||
875 | out: | |
876 | mutex_unlock(&mt9p031->power_lock); | |
877 | return ret; | |
878 | } | |
879 | ||
880 | /* ----------------------------------------------------------------------------- | |
881 | * V4L2 subdev internal operations | |
882 | */ | |
883 | ||
884 | static int mt9p031_registered(struct v4l2_subdev *subdev) | |
885 | { | |
886 | struct i2c_client *client = v4l2_get_subdevdata(subdev); | |
887 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
888 | s32 data; | |
889 | int ret; | |
890 | ||
891 | ret = mt9p031_power_on(mt9p031); | |
892 | if (ret < 0) { | |
893 | dev_err(&client->dev, "MT9P031 power up failed\n"); | |
894 | return ret; | |
895 | } | |
896 | ||
897 | /* Read out the chip version register */ | |
898 | data = mt9p031_read(client, MT9P031_CHIP_VERSION); | |
bbcc9fa0 GL |
899 | mt9p031_power_off(mt9p031); |
900 | ||
418d93ac JM |
901 | if (data != MT9P031_CHIP_VERSION_VALUE) { |
902 | dev_err(&client->dev, "MT9P031 not detected, wrong version " | |
903 | "0x%04x\n", data); | |
904 | return -ENODEV; | |
905 | } | |
906 | ||
418d93ac JM |
907 | dev_info(&client->dev, "MT9P031 detected at address 0x%02x\n", |
908 | client->addr); | |
909 | ||
bbcc9fa0 | 910 | return 0; |
418d93ac JM |
911 | } |
912 | ||
913 | static int mt9p031_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) | |
914 | { | |
915 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
916 | struct v4l2_mbus_framefmt *format; | |
917 | struct v4l2_rect *crop; | |
918 | ||
919 | crop = v4l2_subdev_get_try_crop(fh, 0); | |
920 | crop->left = MT9P031_COLUMN_START_DEF; | |
921 | crop->top = MT9P031_ROW_START_DEF; | |
922 | crop->width = MT9P031_WINDOW_WIDTH_DEF; | |
923 | crop->height = MT9P031_WINDOW_HEIGHT_DEF; | |
924 | ||
925 | format = v4l2_subdev_get_try_format(fh, 0); | |
926 | ||
1c542ba8 | 927 | if (mt9p031->model == MT9P031_MODEL_MONOCHROME) |
418d93ac JM |
928 | format->code = V4L2_MBUS_FMT_Y12_1X12; |
929 | else | |
930 | format->code = V4L2_MBUS_FMT_SGRBG12_1X12; | |
931 | ||
932 | format->width = MT9P031_WINDOW_WIDTH_DEF; | |
933 | format->height = MT9P031_WINDOW_HEIGHT_DEF; | |
934 | format->field = V4L2_FIELD_NONE; | |
935 | format->colorspace = V4L2_COLORSPACE_SRGB; | |
936 | ||
418d93ac JM |
937 | return mt9p031_set_power(subdev, 1); |
938 | } | |
939 | ||
940 | static int mt9p031_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) | |
941 | { | |
942 | return mt9p031_set_power(subdev, 0); | |
943 | } | |
944 | ||
945 | static struct v4l2_subdev_core_ops mt9p031_subdev_core_ops = { | |
946 | .s_power = mt9p031_set_power, | |
947 | }; | |
948 | ||
949 | static struct v4l2_subdev_video_ops mt9p031_subdev_video_ops = { | |
950 | .s_stream = mt9p031_s_stream, | |
951 | }; | |
952 | ||
953 | static struct v4l2_subdev_pad_ops mt9p031_subdev_pad_ops = { | |
954 | .enum_mbus_code = mt9p031_enum_mbus_code, | |
955 | .enum_frame_size = mt9p031_enum_frame_size, | |
956 | .get_fmt = mt9p031_get_format, | |
957 | .set_fmt = mt9p031_set_format, | |
958 | .get_crop = mt9p031_get_crop, | |
959 | .set_crop = mt9p031_set_crop, | |
960 | }; | |
961 | ||
962 | static struct v4l2_subdev_ops mt9p031_subdev_ops = { | |
963 | .core = &mt9p031_subdev_core_ops, | |
964 | .video = &mt9p031_subdev_video_ops, | |
965 | .pad = &mt9p031_subdev_pad_ops, | |
966 | }; | |
967 | ||
968 | static const struct v4l2_subdev_internal_ops mt9p031_subdev_internal_ops = { | |
969 | .registered = mt9p031_registered, | |
970 | .open = mt9p031_open, | |
971 | .close = mt9p031_close, | |
972 | }; | |
973 | ||
974 | /* ----------------------------------------------------------------------------- | |
975 | * Driver initialization and probing | |
976 | */ | |
977 | ||
8d4da37c LP |
978 | static struct mt9p031_platform_data * |
979 | mt9p031_get_pdata(struct i2c_client *client) | |
980 | { | |
981 | struct mt9p031_platform_data *pdata; | |
982 | struct device_node *np; | |
983 | ||
984 | if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node) | |
985 | return client->dev.platform_data; | |
986 | ||
fd9fdb78 | 987 | np = of_graph_get_next_endpoint(client->dev.of_node, NULL); |
8d4da37c LP |
988 | if (!np) |
989 | return NULL; | |
990 | ||
991 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); | |
992 | if (!pdata) | |
993 | goto done; | |
994 | ||
995 | pdata->reset = of_get_named_gpio(client->dev.of_node, "reset-gpios", 0); | |
996 | of_property_read_u32(np, "input-clock-frequency", &pdata->ext_freq); | |
997 | of_property_read_u32(np, "pixel-clock-frequency", &pdata->target_freq); | |
998 | ||
999 | done: | |
1000 | of_node_put(np); | |
1001 | return pdata; | |
1002 | } | |
1003 | ||
418d93ac JM |
1004 | static int mt9p031_probe(struct i2c_client *client, |
1005 | const struct i2c_device_id *did) | |
1006 | { | |
8d4da37c | 1007 | struct mt9p031_platform_data *pdata = mt9p031_get_pdata(client); |
418d93ac JM |
1008 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
1009 | struct mt9p031 *mt9p031; | |
1010 | unsigned int i; | |
1011 | int ret; | |
1012 | ||
1013 | if (pdata == NULL) { | |
1014 | dev_err(&client->dev, "No platform data\n"); | |
1015 | return -EINVAL; | |
1016 | } | |
1017 | ||
1018 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { | |
1019 | dev_warn(&client->dev, | |
1020 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); | |
1021 | return -EIO; | |
1022 | } | |
1023 | ||
37b9f211 | 1024 | mt9p031 = devm_kzalloc(&client->dev, sizeof(*mt9p031), GFP_KERNEL); |
418d93ac JM |
1025 | if (mt9p031 == NULL) |
1026 | return -ENOMEM; | |
1027 | ||
1028 | mt9p031->pdata = pdata; | |
1029 | mt9p031->output_control = MT9P031_OUTPUT_CONTROL_DEF; | |
1030 | mt9p031->mode2 = MT9P031_READ_MODE_2_ROW_BLC; | |
1c542ba8 | 1031 | mt9p031->model = did->driver_data; |
15693b57 | 1032 | mt9p031->reset = -1; |
418d93ac | 1033 | |
7997196c LP |
1034 | mt9p031->regulators[0].supply = "vdd"; |
1035 | mt9p031->regulators[1].supply = "vdd_io"; | |
1036 | mt9p031->regulators[2].supply = "vaa"; | |
97f21276 | 1037 | |
7997196c LP |
1038 | ret = devm_regulator_bulk_get(&client->dev, 3, mt9p031->regulators); |
1039 | if (ret < 0) { | |
97f21276 | 1040 | dev_err(&client->dev, "Unable to get regulators\n"); |
7997196c | 1041 | return ret; |
97f21276 LP |
1042 | } |
1043 | ||
b28d7017 | 1044 | v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 6); |
418d93ac JM |
1045 | |
1046 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, | |
1047 | V4L2_CID_EXPOSURE, MT9P031_SHUTTER_WIDTH_MIN, | |
1048 | MT9P031_SHUTTER_WIDTH_MAX, 1, | |
1049 | MT9P031_SHUTTER_WIDTH_DEF); | |
1050 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, | |
1051 | V4L2_CID_GAIN, MT9P031_GLOBAL_GAIN_MIN, | |
1052 | MT9P031_GLOBAL_GAIN_MAX, 1, MT9P031_GLOBAL_GAIN_DEF); | |
1053 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, | |
1054 | V4L2_CID_HFLIP, 0, 1, 1, 0); | |
1055 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, | |
1056 | V4L2_CID_VFLIP, 0, 1, 1, 0); | |
8d690c4a LP |
1057 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
1058 | V4L2_CID_PIXEL_RATE, pdata->target_freq, | |
1059 | pdata->target_freq, 1, pdata->target_freq); | |
b28d7017 LP |
1060 | v4l2_ctrl_new_std_menu_items(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
1061 | V4L2_CID_TEST_PATTERN, | |
1062 | ARRAY_SIZE(mt9p031_test_pattern_menu) - 1, 0, | |
1063 | 0, mt9p031_test_pattern_menu); | |
418d93ac JM |
1064 | |
1065 | for (i = 0; i < ARRAY_SIZE(mt9p031_ctrls); ++i) | |
1066 | v4l2_ctrl_new_custom(&mt9p031->ctrls, &mt9p031_ctrls[i], NULL); | |
1067 | ||
1068 | mt9p031->subdev.ctrl_handler = &mt9p031->ctrls; | |
1069 | ||
dfea0019 | 1070 | if (mt9p031->ctrls.error) { |
418d93ac JM |
1071 | printk(KERN_INFO "%s: control initialization error %d\n", |
1072 | __func__, mt9p031->ctrls.error); | |
dfea0019 LP |
1073 | ret = mt9p031->ctrls.error; |
1074 | goto done; | |
1075 | } | |
1076 | ||
1077 | mt9p031->blc_auto = v4l2_ctrl_find(&mt9p031->ctrls, V4L2_CID_BLC_AUTO); | |
1078 | mt9p031->blc_offset = v4l2_ctrl_find(&mt9p031->ctrls, | |
1079 | V4L2_CID_BLC_DIGITAL_OFFSET); | |
418d93ac JM |
1080 | |
1081 | mutex_init(&mt9p031->power_lock); | |
1082 | v4l2_i2c_subdev_init(&mt9p031->subdev, client, &mt9p031_subdev_ops); | |
1083 | mt9p031->subdev.internal_ops = &mt9p031_subdev_internal_ops; | |
1084 | ||
1085 | mt9p031->pad.flags = MEDIA_PAD_FL_SOURCE; | |
1086 | ret = media_entity_init(&mt9p031->subdev.entity, 1, &mt9p031->pad, 0); | |
1087 | if (ret < 0) | |
1088 | goto done; | |
1089 | ||
1090 | mt9p031->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; | |
1091 | ||
1092 | mt9p031->crop.width = MT9P031_WINDOW_WIDTH_DEF; | |
1093 | mt9p031->crop.height = MT9P031_WINDOW_HEIGHT_DEF; | |
1094 | mt9p031->crop.left = MT9P031_COLUMN_START_DEF; | |
1095 | mt9p031->crop.top = MT9P031_ROW_START_DEF; | |
1096 | ||
1c542ba8 | 1097 | if (mt9p031->model == MT9P031_MODEL_MONOCHROME) |
418d93ac JM |
1098 | mt9p031->format.code = V4L2_MBUS_FMT_Y12_1X12; |
1099 | else | |
1100 | mt9p031->format.code = V4L2_MBUS_FMT_SGRBG12_1X12; | |
1101 | ||
1102 | mt9p031->format.width = MT9P031_WINDOW_WIDTH_DEF; | |
1103 | mt9p031->format.height = MT9P031_WINDOW_HEIGHT_DEF; | |
1104 | mt9p031->format.field = V4L2_FIELD_NONE; | |
1105 | mt9p031->format.colorspace = V4L2_COLORSPACE_SRGB; | |
1106 | ||
2660a22b | 1107 | if (gpio_is_valid(pdata->reset)) { |
37b9f211 LP |
1108 | ret = devm_gpio_request_one(&client->dev, pdata->reset, |
1109 | GPIOF_OUT_INIT_LOW, "mt9p031_rst"); | |
15693b57 LP |
1110 | if (ret < 0) |
1111 | goto done; | |
1112 | ||
1113 | mt9p031->reset = pdata->reset; | |
1114 | } | |
1115 | ||
d6749258 | 1116 | ret = mt9p031_clk_setup(mt9p031); |
418d93ac JM |
1117 | |
1118 | done: | |
1119 | if (ret < 0) { | |
1120 | v4l2_ctrl_handler_free(&mt9p031->ctrls); | |
1121 | media_entity_cleanup(&mt9p031->subdev.entity); | |
418d93ac JM |
1122 | } |
1123 | ||
1124 | return ret; | |
1125 | } | |
1126 | ||
1127 | static int mt9p031_remove(struct i2c_client *client) | |
1128 | { | |
1129 | struct v4l2_subdev *subdev = i2c_get_clientdata(client); | |
1130 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
1131 | ||
1132 | v4l2_ctrl_handler_free(&mt9p031->ctrls); | |
1133 | v4l2_device_unregister_subdev(subdev); | |
1134 | media_entity_cleanup(&subdev->entity); | |
418d93ac JM |
1135 | |
1136 | return 0; | |
1137 | } | |
1138 | ||
1139 | static const struct i2c_device_id mt9p031_id[] = { | |
1c542ba8 LP |
1140 | { "mt9p031", MT9P031_MODEL_COLOR }, |
1141 | { "mt9p031m", MT9P031_MODEL_MONOCHROME }, | |
418d93ac JM |
1142 | { } |
1143 | }; | |
1144 | MODULE_DEVICE_TABLE(i2c, mt9p031_id); | |
1145 | ||
8d4da37c LP |
1146 | #if IS_ENABLED(CONFIG_OF) |
1147 | static const struct of_device_id mt9p031_of_match[] = { | |
1148 | { .compatible = "aptina,mt9p031", }, | |
1149 | { .compatible = "aptina,mt9p031m", }, | |
1150 | { /* sentinel */ }, | |
1151 | }; | |
1152 | MODULE_DEVICE_TABLE(of, mt9p031_of_match); | |
1153 | #endif | |
1154 | ||
418d93ac JM |
1155 | static struct i2c_driver mt9p031_i2c_driver = { |
1156 | .driver = { | |
8d4da37c | 1157 | .of_match_table = of_match_ptr(mt9p031_of_match), |
418d93ac JM |
1158 | .name = "mt9p031", |
1159 | }, | |
1160 | .probe = mt9p031_probe, | |
1161 | .remove = mt9p031_remove, | |
1162 | .id_table = mt9p031_id, | |
1163 | }; | |
1164 | ||
c6e8d86f | 1165 | module_i2c_driver(mt9p031_i2c_driver); |
418d93ac JM |
1166 | |
1167 | MODULE_DESCRIPTION("Aptina MT9P031 Camera driver"); | |
1168 | MODULE_AUTHOR("Bastian Hecht <hechtb@gmail.com>"); | |
1169 | MODULE_LICENSE("GPL v2"); |