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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
418d93ac JM |
2 | /* |
3 | * Driver for MT9P031 CMOS Image Sensor from Aptina | |
4 | * | |
5 | * Copyright (C) 2011, Laurent Pinchart <laurent.pinchart@ideasonboard.com> | |
6 | * Copyright (C) 2011, Javier Martin <javier.martin@vista-silicon.com> | |
7 | * Copyright (C) 2011, Guennadi Liakhovetski <g.liakhovetski@gmx.de> | |
8 | * | |
9 | * Based on the MT9V032 driver and Bastian Hecht's code. | |
418d93ac JM |
10 | */ |
11 | ||
d6749258 | 12 | #include <linux/clk.h> |
418d93ac JM |
13 | #include <linux/delay.h> |
14 | #include <linux/device.h> | |
7c3be9f8 | 15 | #include <linux/gpio/consumer.h> |
418d93ac JM |
16 | #include <linux/i2c.h> |
17 | #include <linux/log2.h> | |
8d4da37c | 18 | #include <linux/module.h> |
64695905 | 19 | #include <linux/of.h> |
fd9fdb78 | 20 | #include <linux/of_graph.h> |
418d93ac | 21 | #include <linux/pm.h> |
97f21276 | 22 | #include <linux/regulator/consumer.h> |
418d93ac | 23 | #include <linux/slab.h> |
418d93ac JM |
24 | #include <linux/videodev2.h> |
25 | ||
b5dcee22 | 26 | #include <media/i2c/mt9p031.h> |
9012d088 | 27 | #include <media/v4l2-async.h> |
418d93ac JM |
28 | #include <media/v4l2-ctrls.h> |
29 | #include <media/v4l2-device.h> | |
30 | #include <media/v4l2-subdev.h> | |
31 | ||
08cd43cc LP |
32 | #include "aptina-pll.h" |
33 | ||
418d93ac JM |
34 | #define MT9P031_PIXEL_ARRAY_WIDTH 2752 |
35 | #define MT9P031_PIXEL_ARRAY_HEIGHT 2004 | |
36 | ||
37 | #define MT9P031_CHIP_VERSION 0x00 | |
38 | #define MT9P031_CHIP_VERSION_VALUE 0x1801 | |
39 | #define MT9P031_ROW_START 0x01 | |
40 | #define MT9P031_ROW_START_MIN 0 | |
41 | #define MT9P031_ROW_START_MAX 2004 | |
42 | #define MT9P031_ROW_START_DEF 54 | |
43 | #define MT9P031_COLUMN_START 0x02 | |
44 | #define MT9P031_COLUMN_START_MIN 0 | |
45 | #define MT9P031_COLUMN_START_MAX 2750 | |
46 | #define MT9P031_COLUMN_START_DEF 16 | |
47 | #define MT9P031_WINDOW_HEIGHT 0x03 | |
48 | #define MT9P031_WINDOW_HEIGHT_MIN 2 | |
49 | #define MT9P031_WINDOW_HEIGHT_MAX 2006 | |
50 | #define MT9P031_WINDOW_HEIGHT_DEF 1944 | |
51 | #define MT9P031_WINDOW_WIDTH 0x04 | |
52 | #define MT9P031_WINDOW_WIDTH_MIN 2 | |
53 | #define MT9P031_WINDOW_WIDTH_MAX 2752 | |
54 | #define MT9P031_WINDOW_WIDTH_DEF 2592 | |
55 | #define MT9P031_HORIZONTAL_BLANK 0x05 | |
56 | #define MT9P031_HORIZONTAL_BLANK_MIN 0 | |
57 | #define MT9P031_HORIZONTAL_BLANK_MAX 4095 | |
58 | #define MT9P031_VERTICAL_BLANK 0x06 | |
5266c98b LP |
59 | #define MT9P031_VERTICAL_BLANK_MIN 1 |
60 | #define MT9P031_VERTICAL_BLANK_MAX 4096 | |
61 | #define MT9P031_VERTICAL_BLANK_DEF 26 | |
418d93ac JM |
62 | #define MT9P031_OUTPUT_CONTROL 0x07 |
63 | #define MT9P031_OUTPUT_CONTROL_CEN 2 | |
64 | #define MT9P031_OUTPUT_CONTROL_SYN 1 | |
65 | #define MT9P031_OUTPUT_CONTROL_DEF 0x1f82 | |
66 | #define MT9P031_SHUTTER_WIDTH_UPPER 0x08 | |
67 | #define MT9P031_SHUTTER_WIDTH_LOWER 0x09 | |
68 | #define MT9P031_SHUTTER_WIDTH_MIN 1 | |
69 | #define MT9P031_SHUTTER_WIDTH_MAX 1048575 | |
70 | #define MT9P031_SHUTTER_WIDTH_DEF 1943 | |
71 | #define MT9P031_PLL_CONTROL 0x10 | |
72 | #define MT9P031_PLL_CONTROL_PWROFF 0x0050 | |
73 | #define MT9P031_PLL_CONTROL_PWRON 0x0051 | |
74 | #define MT9P031_PLL_CONTROL_USEPLL 0x0052 | |
75 | #define MT9P031_PLL_CONFIG_1 0x11 | |
76 | #define MT9P031_PLL_CONFIG_2 0x12 | |
77 | #define MT9P031_PIXEL_CLOCK_CONTROL 0x0a | |
a970449e LP |
78 | #define MT9P031_PIXEL_CLOCK_INVERT (1 << 15) |
79 | #define MT9P031_PIXEL_CLOCK_SHIFT(n) ((n) << 8) | |
80 | #define MT9P031_PIXEL_CLOCK_DIVIDE(n) ((n) << 0) | |
418d93ac JM |
81 | #define MT9P031_FRAME_RESTART 0x0b |
82 | #define MT9P031_SHUTTER_DELAY 0x0c | |
83 | #define MT9P031_RST 0x0d | |
84 | #define MT9P031_RST_ENABLE 1 | |
85 | #define MT9P031_RST_DISABLE 0 | |
86 | #define MT9P031_READ_MODE_1 0x1e | |
87 | #define MT9P031_READ_MODE_2 0x20 | |
88 | #define MT9P031_READ_MODE_2_ROW_MIR (1 << 15) | |
89 | #define MT9P031_READ_MODE_2_COL_MIR (1 << 14) | |
90 | #define MT9P031_READ_MODE_2_ROW_BLC (1 << 6) | |
91 | #define MT9P031_ROW_ADDRESS_MODE 0x22 | |
92 | #define MT9P031_COLUMN_ADDRESS_MODE 0x23 | |
93 | #define MT9P031_GLOBAL_GAIN 0x35 | |
94 | #define MT9P031_GLOBAL_GAIN_MIN 8 | |
95 | #define MT9P031_GLOBAL_GAIN_MAX 1024 | |
96 | #define MT9P031_GLOBAL_GAIN_DEF 8 | |
97 | #define MT9P031_GLOBAL_GAIN_MULT (1 << 6) | |
dfea0019 | 98 | #define MT9P031_ROW_BLACK_TARGET 0x49 |
418d93ac | 99 | #define MT9P031_ROW_BLACK_DEF_OFFSET 0x4b |
dfea0019 LP |
100 | #define MT9P031_GREEN1_OFFSET 0x60 |
101 | #define MT9P031_GREEN2_OFFSET 0x61 | |
102 | #define MT9P031_BLACK_LEVEL_CALIBRATION 0x62 | |
103 | #define MT9P031_BLC_MANUAL_BLC (1 << 0) | |
104 | #define MT9P031_RED_OFFSET 0x63 | |
105 | #define MT9P031_BLUE_OFFSET 0x64 | |
418d93ac JM |
106 | #define MT9P031_TEST_PATTERN 0xa0 |
107 | #define MT9P031_TEST_PATTERN_SHIFT 3 | |
108 | #define MT9P031_TEST_PATTERN_ENABLE (1 << 0) | |
109 | #define MT9P031_TEST_PATTERN_DISABLE (0 << 0) | |
110 | #define MT9P031_TEST_PATTERN_GREEN 0xa1 | |
111 | #define MT9P031_TEST_PATTERN_RED 0xa2 | |
112 | #define MT9P031_TEST_PATTERN_BLUE 0xa3 | |
113 | ||
1c542ba8 LP |
114 | enum mt9p031_model { |
115 | MT9P031_MODEL_COLOR, | |
116 | MT9P031_MODEL_MONOCHROME, | |
117 | }; | |
118 | ||
418d93ac JM |
119 | struct mt9p031 { |
120 | struct v4l2_subdev subdev; | |
121 | struct media_pad pad; | |
122 | struct v4l2_rect crop; /* Sensor window */ | |
123 | struct v4l2_mbus_framefmt format; | |
418d93ac JM |
124 | struct mt9p031_platform_data *pdata; |
125 | struct mutex power_lock; /* lock to protect power_count */ | |
126 | int power_count; | |
418d93ac | 127 | |
d6749258 | 128 | struct clk *clk; |
7997196c | 129 | struct regulator_bulk_data regulators[3]; |
97f21276 | 130 | |
1c542ba8 | 131 | enum mt9p031_model model; |
08cd43cc | 132 | struct aptina_pll pll; |
a970449e LP |
133 | unsigned int clk_div; |
134 | bool use_pll; | |
7c3be9f8 | 135 | struct gpio_desc *reset; |
418d93ac | 136 | |
dfea0019 LP |
137 | struct v4l2_ctrl_handler ctrls; |
138 | struct v4l2_ctrl *blc_auto; | |
139 | struct v4l2_ctrl *blc_offset; | |
140 | ||
418d93ac JM |
141 | /* Registers cache */ |
142 | u16 output_control; | |
143 | u16 mode2; | |
144 | }; | |
145 | ||
146 | static struct mt9p031 *to_mt9p031(struct v4l2_subdev *sd) | |
147 | { | |
148 | return container_of(sd, struct mt9p031, subdev); | |
149 | } | |
150 | ||
151 | static int mt9p031_read(struct i2c_client *client, u8 reg) | |
152 | { | |
c27e3050 | 153 | return i2c_smbus_read_word_swapped(client, reg); |
418d93ac JM |
154 | } |
155 | ||
156 | static int mt9p031_write(struct i2c_client *client, u8 reg, u16 data) | |
157 | { | |
c27e3050 | 158 | return i2c_smbus_write_word_swapped(client, reg, data); |
418d93ac JM |
159 | } |
160 | ||
161 | static int mt9p031_set_output_control(struct mt9p031 *mt9p031, u16 clear, | |
162 | u16 set) | |
163 | { | |
164 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
165 | u16 value = (mt9p031->output_control & ~clear) | set; | |
166 | int ret; | |
167 | ||
168 | ret = mt9p031_write(client, MT9P031_OUTPUT_CONTROL, value); | |
169 | if (ret < 0) | |
170 | return ret; | |
171 | ||
172 | mt9p031->output_control = value; | |
173 | return 0; | |
174 | } | |
175 | ||
176 | static int mt9p031_set_mode2(struct mt9p031 *mt9p031, u16 clear, u16 set) | |
177 | { | |
178 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
179 | u16 value = (mt9p031->mode2 & ~clear) | set; | |
180 | int ret; | |
181 | ||
182 | ret = mt9p031_write(client, MT9P031_READ_MODE_2, value); | |
183 | if (ret < 0) | |
184 | return ret; | |
185 | ||
186 | mt9p031->mode2 = value; | |
187 | return 0; | |
188 | } | |
189 | ||
190 | static int mt9p031_reset(struct mt9p031 *mt9p031) | |
191 | { | |
192 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
193 | int ret; | |
194 | ||
195 | /* Disable chip output, synchronous option update */ | |
196 | ret = mt9p031_write(client, MT9P031_RST, MT9P031_RST_ENABLE); | |
197 | if (ret < 0) | |
198 | return ret; | |
199 | ret = mt9p031_write(client, MT9P031_RST, MT9P031_RST_DISABLE); | |
200 | if (ret < 0) | |
201 | return ret; | |
202 | ||
a970449e LP |
203 | ret = mt9p031_write(client, MT9P031_PIXEL_CLOCK_CONTROL, |
204 | MT9P031_PIXEL_CLOCK_DIVIDE(mt9p031->clk_div)); | |
205 | if (ret < 0) | |
206 | return ret; | |
207 | ||
418d93ac JM |
208 | return mt9p031_set_output_control(mt9p031, MT9P031_OUTPUT_CONTROL_CEN, |
209 | 0); | |
210 | } | |
211 | ||
d6749258 | 212 | static int mt9p031_clk_setup(struct mt9p031 *mt9p031) |
418d93ac | 213 | { |
08cd43cc LP |
214 | static const struct aptina_pll_limits limits = { |
215 | .ext_clock_min = 6000000, | |
216 | .ext_clock_max = 27000000, | |
217 | .int_clock_min = 2000000, | |
218 | .int_clock_max = 13500000, | |
219 | .out_clock_min = 180000000, | |
220 | .out_clock_max = 360000000, | |
221 | .pix_clock_max = 96000000, | |
222 | .n_min = 1, | |
223 | .n_max = 64, | |
224 | .m_min = 16, | |
225 | .m_max = 255, | |
226 | .p1_min = 1, | |
227 | .p1_max = 128, | |
228 | }; | |
229 | ||
418d93ac | 230 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); |
08cd43cc | 231 | struct mt9p031_platform_data *pdata = mt9p031->pdata; |
ee2d16d7 | 232 | int ret; |
418d93ac | 233 | |
d6749258 LP |
234 | mt9p031->clk = devm_clk_get(&client->dev, NULL); |
235 | if (IS_ERR(mt9p031->clk)) | |
236 | return PTR_ERR(mt9p031->clk); | |
237 | ||
ee2d16d7 LP |
238 | ret = clk_set_rate(mt9p031->clk, pdata->ext_freq); |
239 | if (ret < 0) | |
240 | return ret; | |
d6749258 | 241 | |
a970449e LP |
242 | /* If the external clock frequency is out of bounds for the PLL use the |
243 | * pixel clock divider only and disable the PLL. | |
244 | */ | |
245 | if (pdata->ext_freq > limits.ext_clock_max) { | |
246 | unsigned int div; | |
247 | ||
248 | div = DIV_ROUND_UP(pdata->ext_freq, pdata->target_freq); | |
249 | div = roundup_pow_of_two(div) / 2; | |
250 | ||
198b47dd | 251 | mt9p031->clk_div = min_t(unsigned int, div, 64); |
a970449e LP |
252 | mt9p031->use_pll = false; |
253 | ||
254 | return 0; | |
255 | } | |
d6749258 | 256 | |
08cd43cc LP |
257 | mt9p031->pll.ext_clock = pdata->ext_freq; |
258 | mt9p031->pll.pix_clock = pdata->target_freq; | |
a970449e | 259 | mt9p031->use_pll = true; |
418d93ac | 260 | |
08cd43cc | 261 | return aptina_pll_calculate(&client->dev, &limits, &mt9p031->pll); |
418d93ac JM |
262 | } |
263 | ||
264 | static int mt9p031_pll_enable(struct mt9p031 *mt9p031) | |
265 | { | |
266 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
267 | int ret; | |
268 | ||
a970449e LP |
269 | if (!mt9p031->use_pll) |
270 | return 0; | |
271 | ||
418d93ac JM |
272 | ret = mt9p031_write(client, MT9P031_PLL_CONTROL, |
273 | MT9P031_PLL_CONTROL_PWRON); | |
274 | if (ret < 0) | |
275 | return ret; | |
276 | ||
277 | ret = mt9p031_write(client, MT9P031_PLL_CONFIG_1, | |
08cd43cc | 278 | (mt9p031->pll.m << 8) | (mt9p031->pll.n - 1)); |
418d93ac JM |
279 | if (ret < 0) |
280 | return ret; | |
281 | ||
08cd43cc | 282 | ret = mt9p031_write(client, MT9P031_PLL_CONFIG_2, mt9p031->pll.p1 - 1); |
418d93ac JM |
283 | if (ret < 0) |
284 | return ret; | |
285 | ||
286 | usleep_range(1000, 2000); | |
287 | ret = mt9p031_write(client, MT9P031_PLL_CONTROL, | |
288 | MT9P031_PLL_CONTROL_PWRON | | |
289 | MT9P031_PLL_CONTROL_USEPLL); | |
290 | return ret; | |
291 | } | |
292 | ||
293 | static inline int mt9p031_pll_disable(struct mt9p031 *mt9p031) | |
294 | { | |
295 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
296 | ||
a970449e LP |
297 | if (!mt9p031->use_pll) |
298 | return 0; | |
299 | ||
418d93ac JM |
300 | return mt9p031_write(client, MT9P031_PLL_CONTROL, |
301 | MT9P031_PLL_CONTROL_PWROFF); | |
302 | } | |
303 | ||
304 | static int mt9p031_power_on(struct mt9p031 *mt9p031) | |
305 | { | |
7997196c LP |
306 | int ret; |
307 | ||
7c3be9f8 LP |
308 | /* Ensure RESET_BAR is active */ |
309 | if (mt9p031->reset) { | |
310 | gpiod_set_value(mt9p031->reset, 1); | |
418d93ac JM |
311 | usleep_range(1000, 2000); |
312 | } | |
313 | ||
97f21276 | 314 | /* Bring up the supplies */ |
7997196c LP |
315 | ret = regulator_bulk_enable(ARRAY_SIZE(mt9p031->regulators), |
316 | mt9p031->regulators); | |
317 | if (ret < 0) | |
318 | return ret; | |
97f21276 | 319 | |
e8e45593 | 320 | /* Enable clock */ |
ee2d16d7 LP |
321 | if (mt9p031->clk) { |
322 | ret = clk_prepare_enable(mt9p031->clk); | |
323 | if (ret) { | |
324 | regulator_bulk_disable(ARRAY_SIZE(mt9p031->regulators), | |
325 | mt9p031->regulators); | |
326 | return ret; | |
327 | } | |
328 | } | |
418d93ac JM |
329 | |
330 | /* Now RESET_BAR must be high */ | |
7c3be9f8 LP |
331 | if (mt9p031->reset) { |
332 | gpiod_set_value(mt9p031->reset, 0); | |
418d93ac JM |
333 | usleep_range(1000, 2000); |
334 | } | |
335 | ||
336 | return 0; | |
337 | } | |
338 | ||
339 | static void mt9p031_power_off(struct mt9p031 *mt9p031) | |
340 | { | |
7c3be9f8 LP |
341 | if (mt9p031->reset) { |
342 | gpiod_set_value(mt9p031->reset, 1); | |
418d93ac JM |
343 | usleep_range(1000, 2000); |
344 | } | |
345 | ||
7997196c LP |
346 | regulator_bulk_disable(ARRAY_SIZE(mt9p031->regulators), |
347 | mt9p031->regulators); | |
97f21276 | 348 | |
b5c17905 | 349 | clk_disable_unprepare(mt9p031->clk); |
418d93ac JM |
350 | } |
351 | ||
352 | static int __mt9p031_set_power(struct mt9p031 *mt9p031, bool on) | |
353 | { | |
354 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
355 | int ret; | |
356 | ||
357 | if (!on) { | |
358 | mt9p031_power_off(mt9p031); | |
359 | return 0; | |
360 | } | |
361 | ||
362 | ret = mt9p031_power_on(mt9p031); | |
363 | if (ret < 0) | |
364 | return ret; | |
365 | ||
366 | ret = mt9p031_reset(mt9p031); | |
367 | if (ret < 0) { | |
368 | dev_err(&client->dev, "Failed to reset the camera\n"); | |
369 | return ret; | |
370 | } | |
371 | ||
372 | return v4l2_ctrl_handler_setup(&mt9p031->ctrls); | |
373 | } | |
374 | ||
375 | /* ----------------------------------------------------------------------------- | |
376 | * V4L2 subdev video operations | |
377 | */ | |
378 | ||
379 | static int mt9p031_set_params(struct mt9p031 *mt9p031) | |
380 | { | |
381 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
382 | struct v4l2_mbus_framefmt *format = &mt9p031->format; | |
383 | const struct v4l2_rect *crop = &mt9p031->crop; | |
384 | unsigned int hblank; | |
385 | unsigned int vblank; | |
386 | unsigned int xskip; | |
387 | unsigned int yskip; | |
388 | unsigned int xbin; | |
389 | unsigned int ybin; | |
390 | int ret; | |
391 | ||
392 | /* Windows position and size. | |
393 | * | |
394 | * TODO: Make sure the start coordinates and window size match the | |
395 | * skipping, binning and mirroring (see description of registers 2 and 4 | |
396 | * in table 13, and Binning section on page 41). | |
397 | */ | |
398 | ret = mt9p031_write(client, MT9P031_COLUMN_START, crop->left); | |
399 | if (ret < 0) | |
400 | return ret; | |
401 | ret = mt9p031_write(client, MT9P031_ROW_START, crop->top); | |
402 | if (ret < 0) | |
403 | return ret; | |
404 | ret = mt9p031_write(client, MT9P031_WINDOW_WIDTH, crop->width - 1); | |
405 | if (ret < 0) | |
406 | return ret; | |
407 | ret = mt9p031_write(client, MT9P031_WINDOW_HEIGHT, crop->height - 1); | |
408 | if (ret < 0) | |
409 | return ret; | |
410 | ||
411 | /* Row and column binning and skipping. Use the maximum binning value | |
412 | * compatible with the skipping settings. | |
413 | */ | |
414 | xskip = DIV_ROUND_CLOSEST(crop->width, format->width); | |
415 | yskip = DIV_ROUND_CLOSEST(crop->height, format->height); | |
416 | xbin = 1 << (ffs(xskip) - 1); | |
417 | ybin = 1 << (ffs(yskip) - 1); | |
418 | ||
419 | ret = mt9p031_write(client, MT9P031_COLUMN_ADDRESS_MODE, | |
420 | ((xbin - 1) << 4) | (xskip - 1)); | |
421 | if (ret < 0) | |
422 | return ret; | |
423 | ret = mt9p031_write(client, MT9P031_ROW_ADDRESS_MODE, | |
424 | ((ybin - 1) << 4) | (yskip - 1)); | |
425 | if (ret < 0) | |
426 | return ret; | |
427 | ||
428 | /* Blanking - use minimum value for horizontal blanking and default | |
429 | * value for vertical blanking. | |
430 | */ | |
5266c98b | 431 | hblank = 346 * ybin + 64 + (80 >> min_t(unsigned int, xbin, 3)); |
418d93ac JM |
432 | vblank = MT9P031_VERTICAL_BLANK_DEF; |
433 | ||
5266c98b | 434 | ret = mt9p031_write(client, MT9P031_HORIZONTAL_BLANK, hblank - 1); |
418d93ac JM |
435 | if (ret < 0) |
436 | return ret; | |
5266c98b | 437 | ret = mt9p031_write(client, MT9P031_VERTICAL_BLANK, vblank - 1); |
418d93ac JM |
438 | if (ret < 0) |
439 | return ret; | |
440 | ||
441 | return ret; | |
442 | } | |
443 | ||
444 | static int mt9p031_s_stream(struct v4l2_subdev *subdev, int enable) | |
445 | { | |
446 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
447 | int ret; | |
448 | ||
449 | if (!enable) { | |
450 | /* Stop sensor readout */ | |
451 | ret = mt9p031_set_output_control(mt9p031, | |
452 | MT9P031_OUTPUT_CONTROL_CEN, 0); | |
453 | if (ret < 0) | |
454 | return ret; | |
455 | ||
456 | return mt9p031_pll_disable(mt9p031); | |
457 | } | |
458 | ||
459 | ret = mt9p031_set_params(mt9p031); | |
460 | if (ret < 0) | |
461 | return ret; | |
462 | ||
463 | /* Switch to master "normal" mode */ | |
464 | ret = mt9p031_set_output_control(mt9p031, 0, | |
465 | MT9P031_OUTPUT_CONTROL_CEN); | |
466 | if (ret < 0) | |
467 | return ret; | |
468 | ||
469 | return mt9p031_pll_enable(mt9p031); | |
470 | } | |
471 | ||
472 | static int mt9p031_enum_mbus_code(struct v4l2_subdev *subdev, | |
0d346d2a | 473 | struct v4l2_subdev_state *sd_state, |
418d93ac JM |
474 | struct v4l2_subdev_mbus_code_enum *code) |
475 | { | |
476 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
477 | ||
478 | if (code->pad || code->index) | |
479 | return -EINVAL; | |
480 | ||
481 | code->code = mt9p031->format.code; | |
482 | return 0; | |
483 | } | |
484 | ||
485 | static int mt9p031_enum_frame_size(struct v4l2_subdev *subdev, | |
0d346d2a | 486 | struct v4l2_subdev_state *sd_state, |
418d93ac JM |
487 | struct v4l2_subdev_frame_size_enum *fse) |
488 | { | |
489 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
490 | ||
491 | if (fse->index >= 8 || fse->code != mt9p031->format.code) | |
492 | return -EINVAL; | |
493 | ||
494 | fse->min_width = MT9P031_WINDOW_WIDTH_DEF | |
495 | / min_t(unsigned int, 7, fse->index + 1); | |
496 | fse->max_width = fse->min_width; | |
497 | fse->min_height = MT9P031_WINDOW_HEIGHT_DEF / (fse->index + 1); | |
498 | fse->max_height = fse->min_height; | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | static struct v4l2_mbus_framefmt * | |
0d346d2a TV |
504 | __mt9p031_get_pad_format(struct mt9p031 *mt9p031, |
505 | struct v4l2_subdev_state *sd_state, | |
418d93ac JM |
506 | unsigned int pad, u32 which) |
507 | { | |
508 | switch (which) { | |
509 | case V4L2_SUBDEV_FORMAT_TRY: | |
0d346d2a TV |
510 | return v4l2_subdev_get_try_format(&mt9p031->subdev, sd_state, |
511 | pad); | |
418d93ac JM |
512 | case V4L2_SUBDEV_FORMAT_ACTIVE: |
513 | return &mt9p031->format; | |
514 | default: | |
515 | return NULL; | |
516 | } | |
517 | } | |
518 | ||
519 | static struct v4l2_rect * | |
0d346d2a TV |
520 | __mt9p031_get_pad_crop(struct mt9p031 *mt9p031, |
521 | struct v4l2_subdev_state *sd_state, | |
522 | unsigned int pad, u32 which) | |
418d93ac JM |
523 | { |
524 | switch (which) { | |
525 | case V4L2_SUBDEV_FORMAT_TRY: | |
0d346d2a TV |
526 | return v4l2_subdev_get_try_crop(&mt9p031->subdev, sd_state, |
527 | pad); | |
418d93ac JM |
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, | |
0d346d2a | 536 | struct v4l2_subdev_state *sd_state, |
418d93ac JM |
537 | struct v4l2_subdev_format *fmt) |
538 | { | |
539 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
540 | ||
0d346d2a | 541 | fmt->format = *__mt9p031_get_pad_format(mt9p031, sd_state, fmt->pad, |
418d93ac JM |
542 | fmt->which); |
543 | return 0; | |
544 | } | |
545 | ||
546 | static int mt9p031_set_format(struct v4l2_subdev *subdev, | |
0d346d2a | 547 | struct v4l2_subdev_state *sd_state, |
418d93ac JM |
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 | ||
0d346d2a | 558 | __crop = __mt9p031_get_pad_crop(mt9p031, sd_state, format->pad, |
418d93ac JM |
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 | ||
0d346d2a | 574 | __format = __mt9p031_get_pad_format(mt9p031, sd_state, format->pad, |
418d93ac JM |
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 | ||
1a023feb | 584 | static int mt9p031_get_selection(struct v4l2_subdev *subdev, |
0d346d2a | 585 | struct v4l2_subdev_state *sd_state, |
1a023feb | 586 | struct v4l2_subdev_selection *sel) |
418d93ac JM |
587 | { |
588 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
589 | ||
1a023feb HV |
590 | if (sel->target != V4L2_SEL_TGT_CROP) |
591 | return -EINVAL; | |
592 | ||
0d346d2a TV |
593 | sel->r = *__mt9p031_get_pad_crop(mt9p031, sd_state, sel->pad, |
594 | sel->which); | |
418d93ac JM |
595 | return 0; |
596 | } | |
597 | ||
1a023feb | 598 | static int mt9p031_set_selection(struct v4l2_subdev *subdev, |
0d346d2a | 599 | struct v4l2_subdev_state *sd_state, |
1a023feb | 600 | struct v4l2_subdev_selection *sel) |
418d93ac JM |
601 | { |
602 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
603 | struct v4l2_mbus_framefmt *__format; | |
604 | struct v4l2_rect *__crop; | |
605 | struct v4l2_rect rect; | |
606 | ||
1a023feb HV |
607 | if (sel->target != V4L2_SEL_TGT_CROP) |
608 | return -EINVAL; | |
609 | ||
418d93ac JM |
610 | /* Clamp the crop rectangle boundaries and align them to a multiple of 2 |
611 | * pixels to ensure a GRBG Bayer pattern. | |
612 | */ | |
1a023feb | 613 | rect.left = clamp(ALIGN(sel->r.left, 2), MT9P031_COLUMN_START_MIN, |
418d93ac | 614 | MT9P031_COLUMN_START_MAX); |
1a023feb | 615 | rect.top = clamp(ALIGN(sel->r.top, 2), MT9P031_ROW_START_MIN, |
418d93ac | 616 | MT9P031_ROW_START_MAX); |
1a023feb | 617 | rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2), |
f90580ca RR |
618 | MT9P031_WINDOW_WIDTH_MIN, |
619 | MT9P031_WINDOW_WIDTH_MAX); | |
1a023feb | 620 | rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2), |
f90580ca RR |
621 | MT9P031_WINDOW_HEIGHT_MIN, |
622 | MT9P031_WINDOW_HEIGHT_MAX); | |
623 | ||
624 | rect.width = min_t(unsigned int, rect.width, | |
625 | MT9P031_PIXEL_ARRAY_WIDTH - rect.left); | |
626 | rect.height = min_t(unsigned int, rect.height, | |
627 | MT9P031_PIXEL_ARRAY_HEIGHT - rect.top); | |
418d93ac | 628 | |
0d346d2a TV |
629 | __crop = __mt9p031_get_pad_crop(mt9p031, sd_state, sel->pad, |
630 | sel->which); | |
418d93ac JM |
631 | |
632 | if (rect.width != __crop->width || rect.height != __crop->height) { | |
633 | /* Reset the output image size if the crop rectangle size has | |
634 | * been modified. | |
635 | */ | |
0d346d2a TV |
636 | __format = __mt9p031_get_pad_format(mt9p031, sd_state, |
637 | sel->pad, | |
1a023feb | 638 | sel->which); |
418d93ac JM |
639 | __format->width = rect.width; |
640 | __format->height = rect.height; | |
641 | } | |
642 | ||
643 | *__crop = rect; | |
1a023feb | 644 | sel->r = rect; |
418d93ac JM |
645 | |
646 | return 0; | |
647 | } | |
648 | ||
649 | /* ----------------------------------------------------------------------------- | |
650 | * V4L2 subdev control operations | |
651 | */ | |
652 | ||
dfea0019 LP |
653 | #define V4L2_CID_BLC_AUTO (V4L2_CID_USER_BASE | 0x1002) |
654 | #define V4L2_CID_BLC_TARGET_LEVEL (V4L2_CID_USER_BASE | 0x1003) | |
655 | #define V4L2_CID_BLC_ANALOG_OFFSET (V4L2_CID_USER_BASE | 0x1004) | |
656 | #define V4L2_CID_BLC_DIGITAL_OFFSET (V4L2_CID_USER_BASE | 0x1005) | |
418d93ac | 657 | |
535ec214 LP |
658 | static int mt9p031_restore_blc(struct mt9p031 *mt9p031) |
659 | { | |
660 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
661 | int ret; | |
662 | ||
663 | if (mt9p031->blc_auto->cur.val != 0) { | |
664 | ret = mt9p031_set_mode2(mt9p031, 0, | |
665 | MT9P031_READ_MODE_2_ROW_BLC); | |
666 | if (ret < 0) | |
667 | return ret; | |
668 | } | |
669 | ||
670 | if (mt9p031->blc_offset->cur.val != 0) { | |
671 | ret = mt9p031_write(client, MT9P031_ROW_BLACK_TARGET, | |
672 | mt9p031->blc_offset->cur.val); | |
673 | if (ret < 0) | |
674 | return ret; | |
675 | } | |
676 | ||
677 | return 0; | |
678 | } | |
679 | ||
418d93ac JM |
680 | static int mt9p031_s_ctrl(struct v4l2_ctrl *ctrl) |
681 | { | |
682 | struct mt9p031 *mt9p031 = | |
683 | container_of(ctrl->handler, struct mt9p031, ctrls); | |
684 | struct i2c_client *client = v4l2_get_subdevdata(&mt9p031->subdev); | |
685 | u16 data; | |
686 | int ret; | |
687 | ||
8bf54c43 LP |
688 | if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE) |
689 | return 0; | |
690 | ||
418d93ac JM |
691 | switch (ctrl->id) { |
692 | case V4L2_CID_EXPOSURE: | |
693 | ret = mt9p031_write(client, MT9P031_SHUTTER_WIDTH_UPPER, | |
694 | (ctrl->val >> 16) & 0xffff); | |
695 | if (ret < 0) | |
696 | return ret; | |
697 | ||
698 | return mt9p031_write(client, MT9P031_SHUTTER_WIDTH_LOWER, | |
699 | ctrl->val & 0xffff); | |
700 | ||
701 | case V4L2_CID_GAIN: | |
702 | /* Gain is controlled by 2 analog stages and a digital stage. | |
703 | * Valid values for the 3 stages are | |
704 | * | |
705 | * Stage Min Max Step | |
706 | * ------------------------------------------ | |
707 | * First analog stage x1 x2 1 | |
708 | * Second analog stage x1 x4 0.125 | |
709 | * Digital stage x1 x16 0.125 | |
710 | * | |
711 | * To minimize noise, the gain stages should be used in the | |
712 | * second analog stage, first analog stage, digital stage order. | |
713 | * Gain from a previous stage should be pushed to its maximum | |
714 | * value before the next stage is used. | |
715 | */ | |
716 | if (ctrl->val <= 32) { | |
717 | data = ctrl->val; | |
718 | } else if (ctrl->val <= 64) { | |
719 | ctrl->val &= ~1; | |
720 | data = (1 << 6) | (ctrl->val >> 1); | |
721 | } else { | |
722 | ctrl->val &= ~7; | |
723 | data = ((ctrl->val - 64) << 5) | (1 << 6) | 32; | |
724 | } | |
725 | ||
726 | return mt9p031_write(client, MT9P031_GLOBAL_GAIN, data); | |
727 | ||
728 | case V4L2_CID_HFLIP: | |
729 | if (ctrl->val) | |
730 | return mt9p031_set_mode2(mt9p031, | |
731 | 0, MT9P031_READ_MODE_2_COL_MIR); | |
732 | else | |
733 | return mt9p031_set_mode2(mt9p031, | |
734 | MT9P031_READ_MODE_2_COL_MIR, 0); | |
735 | ||
736 | case V4L2_CID_VFLIP: | |
737 | if (ctrl->val) | |
738 | return mt9p031_set_mode2(mt9p031, | |
739 | 0, MT9P031_READ_MODE_2_ROW_MIR); | |
740 | else | |
741 | return mt9p031_set_mode2(mt9p031, | |
742 | MT9P031_READ_MODE_2_ROW_MIR, 0); | |
743 | ||
744 | case V4L2_CID_TEST_PATTERN: | |
8bf54c43 LP |
745 | /* The digital side of the Black Level Calibration function must |
746 | * be disabled when generating a test pattern to avoid artifacts | |
747 | * in the image. Activate (deactivate) the BLC-related controls | |
748 | * when the test pattern is enabled (disabled). | |
749 | */ | |
750 | v4l2_ctrl_activate(mt9p031->blc_auto, ctrl->val == 0); | |
751 | v4l2_ctrl_activate(mt9p031->blc_offset, ctrl->val == 0); | |
752 | ||
418d93ac | 753 | if (!ctrl->val) { |
8bf54c43 | 754 | /* Restore the BLC settings. */ |
535ec214 LP |
755 | ret = mt9p031_restore_blc(mt9p031); |
756 | if (ret < 0) | |
757 | return ret; | |
758 | ||
418d93ac JM |
759 | return mt9p031_write(client, MT9P031_TEST_PATTERN, |
760 | MT9P031_TEST_PATTERN_DISABLE); | |
761 | } | |
762 | ||
763 | ret = mt9p031_write(client, MT9P031_TEST_PATTERN_GREEN, 0x05a0); | |
764 | if (ret < 0) | |
765 | return ret; | |
766 | ret = mt9p031_write(client, MT9P031_TEST_PATTERN_RED, 0x0a50); | |
767 | if (ret < 0) | |
768 | return ret; | |
769 | ret = mt9p031_write(client, MT9P031_TEST_PATTERN_BLUE, 0x0aa0); | |
770 | if (ret < 0) | |
771 | return ret; | |
772 | ||
8bf54c43 | 773 | /* Disable digital BLC when generating a test pattern. */ |
418d93ac JM |
774 | ret = mt9p031_set_mode2(mt9p031, MT9P031_READ_MODE_2_ROW_BLC, |
775 | 0); | |
776 | if (ret < 0) | |
777 | return ret; | |
dfea0019 | 778 | |
418d93ac JM |
779 | ret = mt9p031_write(client, MT9P031_ROW_BLACK_DEF_OFFSET, 0); |
780 | if (ret < 0) | |
781 | return ret; | |
782 | ||
783 | return mt9p031_write(client, MT9P031_TEST_PATTERN, | |
784 | ((ctrl->val - 1) << MT9P031_TEST_PATTERN_SHIFT) | |
785 | | MT9P031_TEST_PATTERN_ENABLE); | |
dfea0019 LP |
786 | |
787 | case V4L2_CID_BLC_AUTO: | |
788 | ret = mt9p031_set_mode2(mt9p031, | |
789 | ctrl->val ? 0 : MT9P031_READ_MODE_2_ROW_BLC, | |
790 | ctrl->val ? MT9P031_READ_MODE_2_ROW_BLC : 0); | |
791 | if (ret < 0) | |
792 | return ret; | |
793 | ||
794 | return mt9p031_write(client, MT9P031_BLACK_LEVEL_CALIBRATION, | |
795 | ctrl->val ? 0 : MT9P031_BLC_MANUAL_BLC); | |
796 | ||
797 | case V4L2_CID_BLC_TARGET_LEVEL: | |
798 | return mt9p031_write(client, MT9P031_ROW_BLACK_TARGET, | |
799 | ctrl->val); | |
800 | ||
801 | case V4L2_CID_BLC_ANALOG_OFFSET: | |
802 | data = ctrl->val & ((1 << 9) - 1); | |
803 | ||
804 | ret = mt9p031_write(client, MT9P031_GREEN1_OFFSET, data); | |
805 | if (ret < 0) | |
806 | return ret; | |
807 | ret = mt9p031_write(client, MT9P031_GREEN2_OFFSET, data); | |
808 | if (ret < 0) | |
809 | return ret; | |
810 | ret = mt9p031_write(client, MT9P031_RED_OFFSET, data); | |
811 | if (ret < 0) | |
812 | return ret; | |
813 | return mt9p031_write(client, MT9P031_BLUE_OFFSET, data); | |
814 | ||
815 | case V4L2_CID_BLC_DIGITAL_OFFSET: | |
816 | return mt9p031_write(client, MT9P031_ROW_BLACK_DEF_OFFSET, | |
817 | ctrl->val & ((1 << 12) - 1)); | |
418d93ac | 818 | } |
dfea0019 | 819 | |
418d93ac JM |
820 | return 0; |
821 | } | |
822 | ||
217bdb07 | 823 | static const struct v4l2_ctrl_ops mt9p031_ctrl_ops = { |
418d93ac JM |
824 | .s_ctrl = mt9p031_s_ctrl, |
825 | }; | |
826 | ||
827 | static const char * const mt9p031_test_pattern_menu[] = { | |
828 | "Disabled", | |
829 | "Color Field", | |
830 | "Horizontal Gradient", | |
831 | "Vertical Gradient", | |
832 | "Diagonal Gradient", | |
833 | "Classic Test Pattern", | |
834 | "Walking 1s", | |
835 | "Monochrome Horizontal Bars", | |
836 | "Monochrome Vertical Bars", | |
837 | "Vertical Color Bars", | |
838 | }; | |
839 | ||
840 | static const struct v4l2_ctrl_config mt9p031_ctrls[] = { | |
841 | { | |
dfea0019 LP |
842 | .ops = &mt9p031_ctrl_ops, |
843 | .id = V4L2_CID_BLC_AUTO, | |
844 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
845 | .name = "BLC, Auto", | |
846 | .min = 0, | |
847 | .max = 1, | |
848 | .step = 1, | |
849 | .def = 1, | |
850 | .flags = 0, | |
851 | }, { | |
852 | .ops = &mt9p031_ctrl_ops, | |
853 | .id = V4L2_CID_BLC_TARGET_LEVEL, | |
854 | .type = V4L2_CTRL_TYPE_INTEGER, | |
855 | .name = "BLC Target Level", | |
856 | .min = 0, | |
857 | .max = 4095, | |
858 | .step = 1, | |
859 | .def = 168, | |
860 | .flags = 0, | |
861 | }, { | |
862 | .ops = &mt9p031_ctrl_ops, | |
863 | .id = V4L2_CID_BLC_ANALOG_OFFSET, | |
864 | .type = V4L2_CTRL_TYPE_INTEGER, | |
865 | .name = "BLC Analog Offset", | |
866 | .min = -255, | |
867 | .max = 255, | |
868 | .step = 1, | |
869 | .def = 32, | |
870 | .flags = 0, | |
871 | }, { | |
872 | .ops = &mt9p031_ctrl_ops, | |
873 | .id = V4L2_CID_BLC_DIGITAL_OFFSET, | |
874 | .type = V4L2_CTRL_TYPE_INTEGER, | |
875 | .name = "BLC Digital Offset", | |
876 | .min = -2048, | |
877 | .max = 2047, | |
878 | .step = 1, | |
879 | .def = 40, | |
880 | .flags = 0, | |
418d93ac JM |
881 | } |
882 | }; | |
883 | ||
884 | /* ----------------------------------------------------------------------------- | |
885 | * V4L2 subdev core operations | |
886 | */ | |
887 | ||
888 | static int mt9p031_set_power(struct v4l2_subdev *subdev, int on) | |
889 | { | |
890 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
891 | int ret = 0; | |
892 | ||
893 | mutex_lock(&mt9p031->power_lock); | |
894 | ||
895 | /* If the power count is modified from 0 to != 0 or from != 0 to 0, | |
896 | * update the power state. | |
897 | */ | |
898 | if (mt9p031->power_count == !on) { | |
899 | ret = __mt9p031_set_power(mt9p031, !!on); | |
900 | if (ret < 0) | |
901 | goto out; | |
902 | } | |
903 | ||
904 | /* Update the power count. */ | |
905 | mt9p031->power_count += on ? 1 : -1; | |
906 | WARN_ON(mt9p031->power_count < 0); | |
907 | ||
908 | out: | |
909 | mutex_unlock(&mt9p031->power_lock); | |
910 | return ret; | |
911 | } | |
912 | ||
913 | /* ----------------------------------------------------------------------------- | |
914 | * V4L2 subdev internal operations | |
915 | */ | |
916 | ||
917 | static int mt9p031_registered(struct v4l2_subdev *subdev) | |
918 | { | |
919 | struct i2c_client *client = v4l2_get_subdevdata(subdev); | |
920 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
921 | s32 data; | |
922 | int ret; | |
923 | ||
924 | ret = mt9p031_power_on(mt9p031); | |
925 | if (ret < 0) { | |
926 | dev_err(&client->dev, "MT9P031 power up failed\n"); | |
927 | return ret; | |
928 | } | |
929 | ||
930 | /* Read out the chip version register */ | |
931 | data = mt9p031_read(client, MT9P031_CHIP_VERSION); | |
bbcc9fa0 GL |
932 | mt9p031_power_off(mt9p031); |
933 | ||
418d93ac JM |
934 | if (data != MT9P031_CHIP_VERSION_VALUE) { |
935 | dev_err(&client->dev, "MT9P031 not detected, wrong version " | |
936 | "0x%04x\n", data); | |
937 | return -ENODEV; | |
938 | } | |
939 | ||
418d93ac JM |
940 | dev_info(&client->dev, "MT9P031 detected at address 0x%02x\n", |
941 | client->addr); | |
942 | ||
bbcc9fa0 | 943 | return 0; |
418d93ac JM |
944 | } |
945 | ||
946 | static int mt9p031_open(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) | |
947 | { | |
948 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
949 | struct v4l2_mbus_framefmt *format; | |
950 | struct v4l2_rect *crop; | |
951 | ||
0d346d2a | 952 | crop = v4l2_subdev_get_try_crop(subdev, fh->state, 0); |
418d93ac JM |
953 | crop->left = MT9P031_COLUMN_START_DEF; |
954 | crop->top = MT9P031_ROW_START_DEF; | |
955 | crop->width = MT9P031_WINDOW_WIDTH_DEF; | |
956 | crop->height = MT9P031_WINDOW_HEIGHT_DEF; | |
957 | ||
0d346d2a | 958 | format = v4l2_subdev_get_try_format(subdev, fh->state, 0); |
418d93ac | 959 | |
1c542ba8 | 960 | if (mt9p031->model == MT9P031_MODEL_MONOCHROME) |
f5fe58fd | 961 | format->code = MEDIA_BUS_FMT_Y12_1X12; |
418d93ac | 962 | else |
f5fe58fd | 963 | format->code = MEDIA_BUS_FMT_SGRBG12_1X12; |
418d93ac JM |
964 | |
965 | format->width = MT9P031_WINDOW_WIDTH_DEF; | |
966 | format->height = MT9P031_WINDOW_HEIGHT_DEF; | |
967 | format->field = V4L2_FIELD_NONE; | |
968 | format->colorspace = V4L2_COLORSPACE_SRGB; | |
969 | ||
418d93ac JM |
970 | return mt9p031_set_power(subdev, 1); |
971 | } | |
972 | ||
973 | static int mt9p031_close(struct v4l2_subdev *subdev, struct v4l2_subdev_fh *fh) | |
974 | { | |
975 | return mt9p031_set_power(subdev, 0); | |
976 | } | |
977 | ||
7c137c60 | 978 | static const struct v4l2_subdev_core_ops mt9p031_subdev_core_ops = { |
418d93ac JM |
979 | .s_power = mt9p031_set_power, |
980 | }; | |
981 | ||
7c137c60 | 982 | static const struct v4l2_subdev_video_ops mt9p031_subdev_video_ops = { |
418d93ac JM |
983 | .s_stream = mt9p031_s_stream, |
984 | }; | |
985 | ||
7c137c60 | 986 | static const struct v4l2_subdev_pad_ops mt9p031_subdev_pad_ops = { |
418d93ac JM |
987 | .enum_mbus_code = mt9p031_enum_mbus_code, |
988 | .enum_frame_size = mt9p031_enum_frame_size, | |
989 | .get_fmt = mt9p031_get_format, | |
990 | .set_fmt = mt9p031_set_format, | |
1a023feb HV |
991 | .get_selection = mt9p031_get_selection, |
992 | .set_selection = mt9p031_set_selection, | |
418d93ac JM |
993 | }; |
994 | ||
7c137c60 | 995 | static const struct v4l2_subdev_ops mt9p031_subdev_ops = { |
418d93ac JM |
996 | .core = &mt9p031_subdev_core_ops, |
997 | .video = &mt9p031_subdev_video_ops, | |
998 | .pad = &mt9p031_subdev_pad_ops, | |
999 | }; | |
1000 | ||
1001 | static const struct v4l2_subdev_internal_ops mt9p031_subdev_internal_ops = { | |
1002 | .registered = mt9p031_registered, | |
1003 | .open = mt9p031_open, | |
1004 | .close = mt9p031_close, | |
1005 | }; | |
1006 | ||
1007 | /* ----------------------------------------------------------------------------- | |
1008 | * Driver initialization and probing | |
1009 | */ | |
1010 | ||
8d4da37c LP |
1011 | static struct mt9p031_platform_data * |
1012 | mt9p031_get_pdata(struct i2c_client *client) | |
1013 | { | |
1014 | struct mt9p031_platform_data *pdata; | |
1015 | struct device_node *np; | |
1016 | ||
1017 | if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node) | |
1018 | return client->dev.platform_data; | |
1019 | ||
fd9fdb78 | 1020 | np = of_graph_get_next_endpoint(client->dev.of_node, NULL); |
8d4da37c LP |
1021 | if (!np) |
1022 | return NULL; | |
1023 | ||
1024 | pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL); | |
1025 | if (!pdata) | |
1026 | goto done; | |
1027 | ||
8d4da37c LP |
1028 | of_property_read_u32(np, "input-clock-frequency", &pdata->ext_freq); |
1029 | of_property_read_u32(np, "pixel-clock-frequency", &pdata->target_freq); | |
1030 | ||
1031 | done: | |
1032 | of_node_put(np); | |
1033 | return pdata; | |
1034 | } | |
1035 | ||
418d93ac JM |
1036 | static int mt9p031_probe(struct i2c_client *client, |
1037 | const struct i2c_device_id *did) | |
1038 | { | |
8d4da37c | 1039 | struct mt9p031_platform_data *pdata = mt9p031_get_pdata(client); |
a8a3e813 | 1040 | struct i2c_adapter *adapter = client->adapter; |
418d93ac JM |
1041 | struct mt9p031 *mt9p031; |
1042 | unsigned int i; | |
1043 | int ret; | |
1044 | ||
1045 | if (pdata == NULL) { | |
1046 | dev_err(&client->dev, "No platform data\n"); | |
1047 | return -EINVAL; | |
1048 | } | |
1049 | ||
1050 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { | |
1051 | dev_warn(&client->dev, | |
1052 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); | |
1053 | return -EIO; | |
1054 | } | |
1055 | ||
37b9f211 | 1056 | mt9p031 = devm_kzalloc(&client->dev, sizeof(*mt9p031), GFP_KERNEL); |
418d93ac JM |
1057 | if (mt9p031 == NULL) |
1058 | return -ENOMEM; | |
1059 | ||
1060 | mt9p031->pdata = pdata; | |
1061 | mt9p031->output_control = MT9P031_OUTPUT_CONTROL_DEF; | |
1062 | mt9p031->mode2 = MT9P031_READ_MODE_2_ROW_BLC; | |
1c542ba8 | 1063 | mt9p031->model = did->driver_data; |
418d93ac | 1064 | |
7997196c LP |
1065 | mt9p031->regulators[0].supply = "vdd"; |
1066 | mt9p031->regulators[1].supply = "vdd_io"; | |
1067 | mt9p031->regulators[2].supply = "vaa"; | |
97f21276 | 1068 | |
7997196c LP |
1069 | ret = devm_regulator_bulk_get(&client->dev, 3, mt9p031->regulators); |
1070 | if (ret < 0) { | |
97f21276 | 1071 | dev_err(&client->dev, "Unable to get regulators\n"); |
7997196c | 1072 | return ret; |
97f21276 LP |
1073 | } |
1074 | ||
15af4a53 LP |
1075 | mutex_init(&mt9p031->power_lock); |
1076 | ||
b28d7017 | 1077 | v4l2_ctrl_handler_init(&mt9p031->ctrls, ARRAY_SIZE(mt9p031_ctrls) + 6); |
418d93ac JM |
1078 | |
1079 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, | |
1080 | V4L2_CID_EXPOSURE, MT9P031_SHUTTER_WIDTH_MIN, | |
1081 | MT9P031_SHUTTER_WIDTH_MAX, 1, | |
1082 | MT9P031_SHUTTER_WIDTH_DEF); | |
1083 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, | |
1084 | V4L2_CID_GAIN, MT9P031_GLOBAL_GAIN_MIN, | |
1085 | MT9P031_GLOBAL_GAIN_MAX, 1, MT9P031_GLOBAL_GAIN_DEF); | |
1086 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, | |
1087 | V4L2_CID_HFLIP, 0, 1, 1, 0); | |
1088 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, | |
1089 | V4L2_CID_VFLIP, 0, 1, 1, 0); | |
8d690c4a LP |
1090 | v4l2_ctrl_new_std(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
1091 | V4L2_CID_PIXEL_RATE, pdata->target_freq, | |
1092 | pdata->target_freq, 1, pdata->target_freq); | |
b28d7017 LP |
1093 | v4l2_ctrl_new_std_menu_items(&mt9p031->ctrls, &mt9p031_ctrl_ops, |
1094 | V4L2_CID_TEST_PATTERN, | |
1095 | ARRAY_SIZE(mt9p031_test_pattern_menu) - 1, 0, | |
1096 | 0, mt9p031_test_pattern_menu); | |
418d93ac JM |
1097 | |
1098 | for (i = 0; i < ARRAY_SIZE(mt9p031_ctrls); ++i) | |
1099 | v4l2_ctrl_new_custom(&mt9p031->ctrls, &mt9p031_ctrls[i], NULL); | |
1100 | ||
1101 | mt9p031->subdev.ctrl_handler = &mt9p031->ctrls; | |
1102 | ||
dfea0019 | 1103 | if (mt9p031->ctrls.error) { |
418d93ac JM |
1104 | printk(KERN_INFO "%s: control initialization error %d\n", |
1105 | __func__, mt9p031->ctrls.error); | |
dfea0019 LP |
1106 | ret = mt9p031->ctrls.error; |
1107 | goto done; | |
1108 | } | |
1109 | ||
1110 | mt9p031->blc_auto = v4l2_ctrl_find(&mt9p031->ctrls, V4L2_CID_BLC_AUTO); | |
1111 | mt9p031->blc_offset = v4l2_ctrl_find(&mt9p031->ctrls, | |
1112 | V4L2_CID_BLC_DIGITAL_OFFSET); | |
418d93ac | 1113 | |
418d93ac JM |
1114 | v4l2_i2c_subdev_init(&mt9p031->subdev, client, &mt9p031_subdev_ops); |
1115 | mt9p031->subdev.internal_ops = &mt9p031_subdev_internal_ops; | |
1116 | ||
173bf6e5 | 1117 | mt9p031->subdev.entity.function = MEDIA_ENT_F_CAM_SENSOR; |
418d93ac | 1118 | mt9p031->pad.flags = MEDIA_PAD_FL_SOURCE; |
ab22e77c | 1119 | ret = media_entity_pads_init(&mt9p031->subdev.entity, 1, &mt9p031->pad); |
418d93ac JM |
1120 | if (ret < 0) |
1121 | goto done; | |
1122 | ||
1123 | mt9p031->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; | |
1124 | ||
1125 | mt9p031->crop.width = MT9P031_WINDOW_WIDTH_DEF; | |
1126 | mt9p031->crop.height = MT9P031_WINDOW_HEIGHT_DEF; | |
1127 | mt9p031->crop.left = MT9P031_COLUMN_START_DEF; | |
1128 | mt9p031->crop.top = MT9P031_ROW_START_DEF; | |
1129 | ||
1c542ba8 | 1130 | if (mt9p031->model == MT9P031_MODEL_MONOCHROME) |
f5fe58fd | 1131 | mt9p031->format.code = MEDIA_BUS_FMT_Y12_1X12; |
418d93ac | 1132 | else |
f5fe58fd | 1133 | mt9p031->format.code = MEDIA_BUS_FMT_SGRBG12_1X12; |
418d93ac JM |
1134 | |
1135 | mt9p031->format.width = MT9P031_WINDOW_WIDTH_DEF; | |
1136 | mt9p031->format.height = MT9P031_WINDOW_HEIGHT_DEF; | |
1137 | mt9p031->format.field = V4L2_FIELD_NONE; | |
1138 | mt9p031->format.colorspace = V4L2_COLORSPACE_SRGB; | |
1139 | ||
7c3be9f8 LP |
1140 | mt9p031->reset = devm_gpiod_get_optional(&client->dev, "reset", |
1141 | GPIOD_OUT_HIGH); | |
15693b57 | 1142 | |
d6749258 | 1143 | ret = mt9p031_clk_setup(mt9p031); |
9012d088 LP |
1144 | if (ret) |
1145 | goto done; | |
1146 | ||
1147 | ret = v4l2_async_register_subdev(&mt9p031->subdev); | |
418d93ac JM |
1148 | |
1149 | done: | |
1150 | if (ret < 0) { | |
1151 | v4l2_ctrl_handler_free(&mt9p031->ctrls); | |
1152 | media_entity_cleanup(&mt9p031->subdev.entity); | |
15af4a53 | 1153 | mutex_destroy(&mt9p031->power_lock); |
418d93ac JM |
1154 | } |
1155 | ||
1156 | return ret; | |
1157 | } | |
1158 | ||
1159 | static int mt9p031_remove(struct i2c_client *client) | |
1160 | { | |
1161 | struct v4l2_subdev *subdev = i2c_get_clientdata(client); | |
1162 | struct mt9p031 *mt9p031 = to_mt9p031(subdev); | |
1163 | ||
1164 | v4l2_ctrl_handler_free(&mt9p031->ctrls); | |
9012d088 | 1165 | v4l2_async_unregister_subdev(subdev); |
418d93ac | 1166 | media_entity_cleanup(&subdev->entity); |
15af4a53 | 1167 | mutex_destroy(&mt9p031->power_lock); |
418d93ac JM |
1168 | |
1169 | return 0; | |
1170 | } | |
1171 | ||
1172 | static const struct i2c_device_id mt9p031_id[] = { | |
1c542ba8 LP |
1173 | { "mt9p031", MT9P031_MODEL_COLOR }, |
1174 | { "mt9p031m", MT9P031_MODEL_MONOCHROME }, | |
418d93ac JM |
1175 | { } |
1176 | }; | |
1177 | MODULE_DEVICE_TABLE(i2c, mt9p031_id); | |
1178 | ||
8d4da37c LP |
1179 | #if IS_ENABLED(CONFIG_OF) |
1180 | static const struct of_device_id mt9p031_of_match[] = { | |
1181 | { .compatible = "aptina,mt9p031", }, | |
1182 | { .compatible = "aptina,mt9p031m", }, | |
1183 | { /* sentinel */ }, | |
1184 | }; | |
1185 | MODULE_DEVICE_TABLE(of, mt9p031_of_match); | |
1186 | #endif | |
1187 | ||
418d93ac JM |
1188 | static struct i2c_driver mt9p031_i2c_driver = { |
1189 | .driver = { | |
8d4da37c | 1190 | .of_match_table = of_match_ptr(mt9p031_of_match), |
418d93ac JM |
1191 | .name = "mt9p031", |
1192 | }, | |
1193 | .probe = mt9p031_probe, | |
1194 | .remove = mt9p031_remove, | |
1195 | .id_table = mt9p031_id, | |
1196 | }; | |
1197 | ||
c6e8d86f | 1198 | module_i2c_driver(mt9p031_i2c_driver); |
418d93ac JM |
1199 | |
1200 | MODULE_DESCRIPTION("Aptina MT9P031 Camera driver"); | |
1201 | MODULE_AUTHOR("Bastian Hecht <hechtb@gmail.com>"); | |
1202 | MODULE_LICENSE("GPL v2"); |