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[deliverable/linux.git] / drivers / media / i2c / soc_camera / mt9m111.c
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1/*
2 * Driver for MT9M111/MT9M112/MT9M131 CMOS Image Sensor from Micron/Aptina
3 *
4 * Copyright (C) 2008, Robert Jarzmik <robert.jarzmik@free.fr>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10#include <linux/videodev2.h>
11#include <linux/slab.h>
12#include <linux/i2c.h>
13#include <linux/log2.h>
14#include <linux/gpio.h>
15#include <linux/delay.h>
16#include <linux/v4l2-mediabus.h>
17#include <linux/module.h>
18
19#include <media/soc_camera.h>
20#include <media/v4l2-clk.h>
21#include <media/v4l2-common.h>
22#include <media/v4l2-ctrls.h>
23
24/*
25 * MT9M111, MT9M112 and MT9M131:
26 * i2c address is 0x48 or 0x5d (depending on SADDR pin)
27 * The platform has to define struct i2c_board_info objects and link to them
28 * from struct soc_camera_host_desc
29 */
30
31/*
32 * Sensor core register addresses (0x000..0x0ff)
33 */
34#define MT9M111_CHIP_VERSION 0x000
35#define MT9M111_ROW_START 0x001
36#define MT9M111_COLUMN_START 0x002
37#define MT9M111_WINDOW_HEIGHT 0x003
38#define MT9M111_WINDOW_WIDTH 0x004
39#define MT9M111_HORIZONTAL_BLANKING_B 0x005
40#define MT9M111_VERTICAL_BLANKING_B 0x006
41#define MT9M111_HORIZONTAL_BLANKING_A 0x007
42#define MT9M111_VERTICAL_BLANKING_A 0x008
43#define MT9M111_SHUTTER_WIDTH 0x009
44#define MT9M111_ROW_SPEED 0x00a
45#define MT9M111_EXTRA_DELAY 0x00b
46#define MT9M111_SHUTTER_DELAY 0x00c
47#define MT9M111_RESET 0x00d
48#define MT9M111_READ_MODE_B 0x020
49#define MT9M111_READ_MODE_A 0x021
50#define MT9M111_FLASH_CONTROL 0x023
51#define MT9M111_GREEN1_GAIN 0x02b
52#define MT9M111_BLUE_GAIN 0x02c
53#define MT9M111_RED_GAIN 0x02d
54#define MT9M111_GREEN2_GAIN 0x02e
55#define MT9M111_GLOBAL_GAIN 0x02f
56#define MT9M111_CONTEXT_CONTROL 0x0c8
57#define MT9M111_PAGE_MAP 0x0f0
58#define MT9M111_BYTE_WISE_ADDR 0x0f1
59
60#define MT9M111_RESET_SYNC_CHANGES (1 << 15)
61#define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
62#define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
63#define MT9M111_RESET_RESET_SOC (1 << 5)
64#define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
65#define MT9M111_RESET_CHIP_ENABLE (1 << 3)
66#define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
67#define MT9M111_RESET_RESTART_FRAME (1 << 1)
68#define MT9M111_RESET_RESET_MODE (1 << 0)
69
70#define MT9M111_RM_FULL_POWER_RD (0 << 10)
71#define MT9M111_RM_LOW_POWER_RD (1 << 10)
72#define MT9M111_RM_COL_SKIP_4X (1 << 5)
73#define MT9M111_RM_ROW_SKIP_4X (1 << 4)
74#define MT9M111_RM_COL_SKIP_2X (1 << 3)
75#define MT9M111_RM_ROW_SKIP_2X (1 << 2)
76#define MT9M111_RMB_MIRROR_COLS (1 << 1)
77#define MT9M111_RMB_MIRROR_ROWS (1 << 0)
78#define MT9M111_CTXT_CTRL_RESTART (1 << 15)
79#define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
80#define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
81#define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
82#define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
83#define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
84#define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
85#define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
86#define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
87#define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
88
89/*
90 * Colorpipe register addresses (0x100..0x1ff)
91 */
92#define MT9M111_OPER_MODE_CTRL 0x106
93#define MT9M111_OUTPUT_FORMAT_CTRL 0x108
94#define MT9M111_REDUCER_XZOOM_B 0x1a0
95#define MT9M111_REDUCER_XSIZE_B 0x1a1
96#define MT9M111_REDUCER_YZOOM_B 0x1a3
97#define MT9M111_REDUCER_YSIZE_B 0x1a4
98#define MT9M111_REDUCER_XZOOM_A 0x1a6
99#define MT9M111_REDUCER_XSIZE_A 0x1a7
100#define MT9M111_REDUCER_YZOOM_A 0x1a9
101#define MT9M111_REDUCER_YSIZE_A 0x1aa
102
103#define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
104#define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
105
106#define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
107#define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
108#define MT9M111_OUTFMT_FLIP_BAYER_COL (1 << 9)
109#define MT9M111_OUTFMT_FLIP_BAYER_ROW (1 << 8)
110#define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
111#define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
112#define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
113#define MT9M111_OUTFMT_RGB (1 << 8)
114#define MT9M111_OUTFMT_RGB565 (0 << 6)
115#define MT9M111_OUTFMT_RGB555 (1 << 6)
116#define MT9M111_OUTFMT_RGB444x (2 << 6)
117#define MT9M111_OUTFMT_RGBx444 (3 << 6)
118#define MT9M111_OUTFMT_TST_RAMP_OFF (0 << 4)
119#define MT9M111_OUTFMT_TST_RAMP_COL (1 << 4)
120#define MT9M111_OUTFMT_TST_RAMP_ROW (2 << 4)
121#define MT9M111_OUTFMT_TST_RAMP_FRAME (3 << 4)
122#define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
123#define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
124#define MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN (1 << 1)
125#define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B (1 << 0)
126
127/*
128 * Camera control register addresses (0x200..0x2ff not implemented)
129 */
130
131#define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
132#define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
133#define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
134#define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
135#define reg_mask(reg, val, mask) mt9m111_reg_mask(client, MT9M111_##reg, \
136 (val), (mask))
137
138#define MT9M111_MIN_DARK_ROWS 8
139#define MT9M111_MIN_DARK_COLS 26
140#define MT9M111_MAX_HEIGHT 1024
141#define MT9M111_MAX_WIDTH 1280
142
143struct mt9m111_context {
144 u16 read_mode;
145 u16 blanking_h;
146 u16 blanking_v;
147 u16 reducer_xzoom;
148 u16 reducer_yzoom;
149 u16 reducer_xsize;
150 u16 reducer_ysize;
151 u16 output_fmt_ctrl2;
152 u16 control;
153};
154
155static struct mt9m111_context context_a = {
156 .read_mode = MT9M111_READ_MODE_A,
157 .blanking_h = MT9M111_HORIZONTAL_BLANKING_A,
158 .blanking_v = MT9M111_VERTICAL_BLANKING_A,
159 .reducer_xzoom = MT9M111_REDUCER_XZOOM_A,
160 .reducer_yzoom = MT9M111_REDUCER_YZOOM_A,
161 .reducer_xsize = MT9M111_REDUCER_XSIZE_A,
162 .reducer_ysize = MT9M111_REDUCER_YSIZE_A,
163 .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_A,
164 .control = MT9M111_CTXT_CTRL_RESTART,
165};
166
167static struct mt9m111_context context_b = {
168 .read_mode = MT9M111_READ_MODE_B,
169 .blanking_h = MT9M111_HORIZONTAL_BLANKING_B,
170 .blanking_v = MT9M111_VERTICAL_BLANKING_B,
171 .reducer_xzoom = MT9M111_REDUCER_XZOOM_B,
172 .reducer_yzoom = MT9M111_REDUCER_YZOOM_B,
173 .reducer_xsize = MT9M111_REDUCER_XSIZE_B,
174 .reducer_ysize = MT9M111_REDUCER_YSIZE_B,
175 .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_B,
176 .control = MT9M111_CTXT_CTRL_RESTART |
177 MT9M111_CTXT_CTRL_DEFECTCOR_B | MT9M111_CTXT_CTRL_RESIZE_B |
178 MT9M111_CTXT_CTRL_CTRL2_B | MT9M111_CTXT_CTRL_GAMMA_B |
179 MT9M111_CTXT_CTRL_READ_MODE_B | MT9M111_CTXT_CTRL_VBLANK_SEL_B |
180 MT9M111_CTXT_CTRL_HBLANK_SEL_B,
181};
182
183/* MT9M111 has only one fixed colorspace per pixelcode */
184struct mt9m111_datafmt {
185 u32 code;
186 enum v4l2_colorspace colorspace;
187};
188
189static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
190 {MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
191 {MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
192 {MEDIA_BUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
193 {MEDIA_BUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG},
194 {MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
195 {MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
196 {MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
197 {MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
198 {MEDIA_BUS_FMT_BGR565_2X8_LE, V4L2_COLORSPACE_SRGB},
199 {MEDIA_BUS_FMT_BGR565_2X8_BE, V4L2_COLORSPACE_SRGB},
200 {MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
201 {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
202};
203
204struct mt9m111 {
205 struct v4l2_subdev subdev;
206 struct v4l2_ctrl_handler hdl;
207 struct v4l2_ctrl *gain;
208 struct mt9m111_context *ctx;
209 struct v4l2_rect rect; /* cropping rectangle */
210 struct v4l2_clk *clk;
211 unsigned int width; /* output */
212 unsigned int height; /* sizes */
213 struct mutex power_lock; /* lock to protect power_count */
214 int power_count;
215 const struct mt9m111_datafmt *fmt;
216 int lastpage; /* PageMap cache value */
217};
218
219/* Find a data format by a pixel code */
220static const struct mt9m111_datafmt *mt9m111_find_datafmt(struct mt9m111 *mt9m111,
221 u32 code)
222{
223 int i;
224 for (i = 0; i < ARRAY_SIZE(mt9m111_colour_fmts); i++)
225 if (mt9m111_colour_fmts[i].code == code)
226 return mt9m111_colour_fmts + i;
227
228 return mt9m111->fmt;
229}
230
231static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
232{
233 return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
234}
235
236static int reg_page_map_set(struct i2c_client *client, const u16 reg)
237{
238 int ret;
239 u16 page;
240 struct mt9m111 *mt9m111 = to_mt9m111(client);
241
242 page = (reg >> 8);
243 if (page == mt9m111->lastpage)
244 return 0;
245 if (page > 2)
246 return -EINVAL;
247
248 ret = i2c_smbus_write_word_swapped(client, MT9M111_PAGE_MAP, page);
249 if (!ret)
250 mt9m111->lastpage = page;
251 return ret;
252}
253
254static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
255{
256 int ret;
257
258 ret = reg_page_map_set(client, reg);
259 if (!ret)
260 ret = i2c_smbus_read_word_swapped(client, reg & 0xff);
261
262 dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
263 return ret;
264}
265
266static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
267 const u16 data)
268{
269 int ret;
270
271 ret = reg_page_map_set(client, reg);
272 if (!ret)
273 ret = i2c_smbus_write_word_swapped(client, reg & 0xff, data);
274 dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
275 return ret;
276}
277
278static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
279 const u16 data)
280{
281 int ret;
282
283 ret = mt9m111_reg_read(client, reg);
284 if (ret >= 0)
285 ret = mt9m111_reg_write(client, reg, ret | data);
286 return ret;
287}
288
289static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
290 const u16 data)
291{
292 int ret;
293
294 ret = mt9m111_reg_read(client, reg);
295 if (ret >= 0)
296 ret = mt9m111_reg_write(client, reg, ret & ~data);
297 return ret;
298}
299
300static int mt9m111_reg_mask(struct i2c_client *client, const u16 reg,
301 const u16 data, const u16 mask)
302{
303 int ret;
304
305 ret = mt9m111_reg_read(client, reg);
306 if (ret >= 0)
307 ret = mt9m111_reg_write(client, reg, (ret & ~mask) | data);
308 return ret;
309}
310
311static int mt9m111_set_context(struct mt9m111 *mt9m111,
312 struct mt9m111_context *ctx)
313{
314 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
315 return reg_write(CONTEXT_CONTROL, ctx->control);
316}
317
318static int mt9m111_setup_rect_ctx(struct mt9m111 *mt9m111,
319 struct mt9m111_context *ctx, struct v4l2_rect *rect,
320 unsigned int width, unsigned int height)
321{
322 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
323 int ret = mt9m111_reg_write(client, ctx->reducer_xzoom, rect->width);
324 if (!ret)
325 ret = mt9m111_reg_write(client, ctx->reducer_yzoom, rect->height);
326 if (!ret)
327 ret = mt9m111_reg_write(client, ctx->reducer_xsize, width);
328 if (!ret)
329 ret = mt9m111_reg_write(client, ctx->reducer_ysize, height);
330 return ret;
331}
332
333static int mt9m111_setup_geometry(struct mt9m111 *mt9m111, struct v4l2_rect *rect,
334 int width, int height, u32 code)
335{
336 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
337 int ret;
338
339 ret = reg_write(COLUMN_START, rect->left);
340 if (!ret)
341 ret = reg_write(ROW_START, rect->top);
342
343 if (!ret)
344 ret = reg_write(WINDOW_WIDTH, rect->width);
345 if (!ret)
346 ret = reg_write(WINDOW_HEIGHT, rect->height);
347
348 if (code != MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) {
349 /* IFP in use, down-scaling possible */
350 if (!ret)
351 ret = mt9m111_setup_rect_ctx(mt9m111, &context_b,
352 rect, width, height);
353 if (!ret)
354 ret = mt9m111_setup_rect_ctx(mt9m111, &context_a,
355 rect, width, height);
356 }
357
358 dev_dbg(&client->dev, "%s(%x): %ux%u@%u:%u -> %ux%u = %d\n",
359 __func__, code, rect->width, rect->height, rect->left, rect->top,
360 width, height, ret);
361
362 return ret;
363}
364
365static int mt9m111_enable(struct mt9m111 *mt9m111)
366{
367 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
368 return reg_write(RESET, MT9M111_RESET_CHIP_ENABLE);
369}
370
371static int mt9m111_reset(struct mt9m111 *mt9m111)
372{
373 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
374 int ret;
375
376 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
377 if (!ret)
378 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
379 if (!ret)
380 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
381 | MT9M111_RESET_RESET_SOC);
382
383 return ret;
384}
385
386static int mt9m111_s_crop(struct v4l2_subdev *sd, const struct v4l2_crop *a)
387{
388 struct v4l2_rect rect = a->c;
389 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
390 int width, height;
391 int ret;
392
393 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
394 return -EINVAL;
395
396 if (mt9m111->fmt->code == MEDIA_BUS_FMT_SBGGR8_1X8 ||
397 mt9m111->fmt->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) {
398 /* Bayer format - even size lengths */
399 rect.width = ALIGN(rect.width, 2);
400 rect.height = ALIGN(rect.height, 2);
401 /* Let the user play with the starting pixel */
402 }
403
404 /* FIXME: the datasheet doesn't specify minimum sizes */
405 soc_camera_limit_side(&rect.left, &rect.width,
406 MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
407
408 soc_camera_limit_side(&rect.top, &rect.height,
409 MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
410
411 width = min(mt9m111->width, rect.width);
412 height = min(mt9m111->height, rect.height);
413
414 ret = mt9m111_setup_geometry(mt9m111, &rect, width, height, mt9m111->fmt->code);
415 if (!ret) {
416 mt9m111->rect = rect;
417 mt9m111->width = width;
418 mt9m111->height = height;
419 }
420
421 return ret;
422}
423
424static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
425{
426 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
427
428 a->c = mt9m111->rect;
429 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
430
431 return 0;
432}
433
434static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
435{
436 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
437 return -EINVAL;
438
439 a->bounds.left = MT9M111_MIN_DARK_COLS;
440 a->bounds.top = MT9M111_MIN_DARK_ROWS;
441 a->bounds.width = MT9M111_MAX_WIDTH;
442 a->bounds.height = MT9M111_MAX_HEIGHT;
443 a->defrect = a->bounds;
444 a->pixelaspect.numerator = 1;
445 a->pixelaspect.denominator = 1;
446
447 return 0;
448}
449
450static int mt9m111_get_fmt(struct v4l2_subdev *sd,
451 struct v4l2_subdev_pad_config *cfg,
452 struct v4l2_subdev_format *format)
453{
454 struct v4l2_mbus_framefmt *mf = &format->format;
455 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
456
457 if (format->pad)
458 return -EINVAL;
459
460 mf->width = mt9m111->width;
461 mf->height = mt9m111->height;
462 mf->code = mt9m111->fmt->code;
463 mf->colorspace = mt9m111->fmt->colorspace;
464 mf->field = V4L2_FIELD_NONE;
465
466 return 0;
467}
468
469static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111,
470 u32 code)
471{
472 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
473 u16 data_outfmt2, mask_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
474 MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB |
475 MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 |
476 MT9M111_OUTFMT_RGB444x | MT9M111_OUTFMT_RGBx444 |
477 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
478 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
479 int ret;
480
481 switch (code) {
482 case MEDIA_BUS_FMT_SBGGR8_1X8:
483 data_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
484 MT9M111_OUTFMT_RGB;
485 break;
486 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE:
487 data_outfmt2 = MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB;
488 break;
489 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE:
490 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555 |
491 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
492 break;
493 case MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE:
494 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
495 break;
496 case MEDIA_BUS_FMT_RGB565_2X8_LE:
497 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
498 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
499 break;
500 case MEDIA_BUS_FMT_RGB565_2X8_BE:
501 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
502 break;
503 case MEDIA_BUS_FMT_BGR565_2X8_BE:
504 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
505 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
506 break;
507 case MEDIA_BUS_FMT_BGR565_2X8_LE:
508 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
509 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
510 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
511 break;
512 case MEDIA_BUS_FMT_UYVY8_2X8:
513 data_outfmt2 = 0;
514 break;
515 case MEDIA_BUS_FMT_VYUY8_2X8:
516 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
517 break;
518 case MEDIA_BUS_FMT_YUYV8_2X8:
519 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
520 break;
521 case MEDIA_BUS_FMT_YVYU8_2X8:
522 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
523 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
524 break;
525 default:
526 dev_err(&client->dev, "Pixel format not handled: %x\n", code);
527 return -EINVAL;
528 }
529
530 ret = mt9m111_reg_mask(client, context_a.output_fmt_ctrl2,
531 data_outfmt2, mask_outfmt2);
532 if (!ret)
533 ret = mt9m111_reg_mask(client, context_b.output_fmt_ctrl2,
534 data_outfmt2, mask_outfmt2);
535
536 return ret;
537}
538
539static int mt9m111_set_fmt(struct v4l2_subdev *sd,
540 struct v4l2_subdev_pad_config *cfg,
541 struct v4l2_subdev_format *format)
542{
543 struct v4l2_mbus_framefmt *mf = &format->format;
544 struct i2c_client *client = v4l2_get_subdevdata(sd);
545 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
546 const struct mt9m111_datafmt *fmt;
547 struct v4l2_rect *rect = &mt9m111->rect;
548 bool bayer;
549 int ret;
550
551 if (format->pad)
552 return -EINVAL;
553
554 fmt = mt9m111_find_datafmt(mt9m111, mf->code);
555
556 bayer = fmt->code == MEDIA_BUS_FMT_SBGGR8_1X8 ||
557 fmt->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE;
558
559 /*
560 * With Bayer format enforce even side lengths, but let the user play
561 * with the starting pixel
562 */
563 if (bayer) {
564 rect->width = ALIGN(rect->width, 2);
565 rect->height = ALIGN(rect->height, 2);
566 }
567
568 if (fmt->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE) {
569 /* IFP bypass mode, no scaling */
570 mf->width = rect->width;
571 mf->height = rect->height;
572 } else {
573 /* No upscaling */
574 if (mf->width > rect->width)
575 mf->width = rect->width;
576 if (mf->height > rect->height)
577 mf->height = rect->height;
578 }
579
580 dev_dbg(&client->dev, "%s(): %ux%u, code=%x\n", __func__,
581 mf->width, mf->height, fmt->code);
582
583 mf->code = fmt->code;
584 mf->colorspace = fmt->colorspace;
585
586 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
587 cfg->try_fmt = *mf;
588 return 0;
589 }
590
591 ret = mt9m111_setup_geometry(mt9m111, rect, mf->width, mf->height, mf->code);
592 if (!ret)
593 ret = mt9m111_set_pixfmt(mt9m111, mf->code);
594 if (!ret) {
595 mt9m111->width = mf->width;
596 mt9m111->height = mf->height;
597 mt9m111->fmt = fmt;
598 }
599
600 return ret;
601}
602
603#ifdef CONFIG_VIDEO_ADV_DEBUG
604static int mt9m111_g_register(struct v4l2_subdev *sd,
605 struct v4l2_dbg_register *reg)
606{
607 struct i2c_client *client = v4l2_get_subdevdata(sd);
608 int val;
609
610 if (reg->reg > 0x2ff)
611 return -EINVAL;
612
613 val = mt9m111_reg_read(client, reg->reg);
614 reg->size = 2;
615 reg->val = (u64)val;
616
617 if (reg->val > 0xffff)
618 return -EIO;
619
620 return 0;
621}
622
623static int mt9m111_s_register(struct v4l2_subdev *sd,
624 const struct v4l2_dbg_register *reg)
625{
626 struct i2c_client *client = v4l2_get_subdevdata(sd);
627
628 if (reg->reg > 0x2ff)
629 return -EINVAL;
630
631 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
632 return -EIO;
633
634 return 0;
635}
636#endif
637
638static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask)
639{
640 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
641 int ret;
642
643 if (flip)
644 ret = mt9m111_reg_set(client, mt9m111->ctx->read_mode, mask);
645 else
646 ret = mt9m111_reg_clear(client, mt9m111->ctx->read_mode, mask);
647
648 return ret;
649}
650
651static int mt9m111_get_global_gain(struct mt9m111 *mt9m111)
652{
653 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
654 int data;
655
656 data = reg_read(GLOBAL_GAIN);
657 if (data >= 0)
658 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
659 (1 << ((data >> 9) & 1));
660 return data;
661}
662
663static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain)
664{
665 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
666 u16 val;
667
668 if (gain > 63 * 2 * 2)
669 return -EINVAL;
670
671 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
672 val = (1 << 10) | (1 << 9) | (gain / 4);
673 else if ((gain >= 64) && (gain < 64 * 2))
674 val = (1 << 9) | (gain / 2);
675 else
676 val = gain;
677
678 return reg_write(GLOBAL_GAIN, val);
679}
680
681static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int val)
682{
683 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
684
685 if (val == V4L2_EXPOSURE_AUTO)
686 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
687 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
688}
689
690static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on)
691{
692 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
693
694 if (on)
695 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
696 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
697}
698
699static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
700{
701 struct mt9m111 *mt9m111 = container_of(ctrl->handler,
702 struct mt9m111, hdl);
703
704 switch (ctrl->id) {
705 case V4L2_CID_VFLIP:
706 return mt9m111_set_flip(mt9m111, ctrl->val,
707 MT9M111_RMB_MIRROR_ROWS);
708 case V4L2_CID_HFLIP:
709 return mt9m111_set_flip(mt9m111, ctrl->val,
710 MT9M111_RMB_MIRROR_COLS);
711 case V4L2_CID_GAIN:
712 return mt9m111_set_global_gain(mt9m111, ctrl->val);
713 case V4L2_CID_EXPOSURE_AUTO:
714 return mt9m111_set_autoexposure(mt9m111, ctrl->val);
715 case V4L2_CID_AUTO_WHITE_BALANCE:
716 return mt9m111_set_autowhitebalance(mt9m111, ctrl->val);
717 }
718
719 return -EINVAL;
720}
721
722static int mt9m111_suspend(struct mt9m111 *mt9m111)
723{
724 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
725 int ret;
726
727 v4l2_ctrl_s_ctrl(mt9m111->gain, mt9m111_get_global_gain(mt9m111));
728
729 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
730 if (!ret)
731 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC |
732 MT9M111_RESET_OUTPUT_DISABLE |
733 MT9M111_RESET_ANALOG_STANDBY);
734 if (!ret)
735 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
736
737 return ret;
738}
739
740static void mt9m111_restore_state(struct mt9m111 *mt9m111)
741{
742 mt9m111_set_context(mt9m111, mt9m111->ctx);
743 mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code);
744 mt9m111_setup_geometry(mt9m111, &mt9m111->rect,
745 mt9m111->width, mt9m111->height, mt9m111->fmt->code);
746 v4l2_ctrl_handler_setup(&mt9m111->hdl);
747}
748
749static int mt9m111_resume(struct mt9m111 *mt9m111)
750{
751 int ret = mt9m111_enable(mt9m111);
752 if (!ret)
753 ret = mt9m111_reset(mt9m111);
754 if (!ret)
755 mt9m111_restore_state(mt9m111);
756
757 return ret;
758}
759
760static int mt9m111_init(struct mt9m111 *mt9m111)
761{
762 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
763 int ret;
764
765 ret = mt9m111_enable(mt9m111);
766 if (!ret)
767 ret = mt9m111_reset(mt9m111);
768 if (!ret)
769 ret = mt9m111_set_context(mt9m111, mt9m111->ctx);
770 if (ret)
771 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
772 return ret;
773}
774
775static int mt9m111_power_on(struct mt9m111 *mt9m111)
776{
777 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
778 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
779 int ret;
780
781 ret = soc_camera_power_on(&client->dev, ssdd, mt9m111->clk);
782 if (ret < 0)
783 return ret;
784
785 ret = mt9m111_resume(mt9m111);
786 if (ret < 0) {
787 dev_err(&client->dev, "Failed to resume the sensor: %d\n", ret);
788 soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
789 }
790
791 return ret;
792}
793
794static void mt9m111_power_off(struct mt9m111 *mt9m111)
795{
796 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
797 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
798
799 mt9m111_suspend(mt9m111);
800 soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
801}
802
803static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
804{
805 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
806 int ret = 0;
807
808 mutex_lock(&mt9m111->power_lock);
809
810 /*
811 * If the power count is modified from 0 to != 0 or from != 0 to 0,
812 * update the power state.
813 */
814 if (mt9m111->power_count == !on) {
815 if (on)
816 ret = mt9m111_power_on(mt9m111);
817 else
818 mt9m111_power_off(mt9m111);
819 }
820
821 if (!ret) {
822 /* Update the power count. */
823 mt9m111->power_count += on ? 1 : -1;
824 WARN_ON(mt9m111->power_count < 0);
825 }
826
827 mutex_unlock(&mt9m111->power_lock);
828 return ret;
829}
830
831static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
832 .s_ctrl = mt9m111_s_ctrl,
833};
834
835static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
836 .s_power = mt9m111_s_power,
837#ifdef CONFIG_VIDEO_ADV_DEBUG
838 .g_register = mt9m111_g_register,
839 .s_register = mt9m111_s_register,
840#endif
841};
842
843static int mt9m111_enum_mbus_code(struct v4l2_subdev *sd,
844 struct v4l2_subdev_pad_config *cfg,
845 struct v4l2_subdev_mbus_code_enum *code)
846{
847 if (code->pad || code->index >= ARRAY_SIZE(mt9m111_colour_fmts))
848 return -EINVAL;
849
850 code->code = mt9m111_colour_fmts[code->index].code;
851 return 0;
852}
853
854static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,
855 struct v4l2_mbus_config *cfg)
856{
857 struct i2c_client *client = v4l2_get_subdevdata(sd);
858 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
859
860 cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
861 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
862 V4L2_MBUS_DATA_ACTIVE_HIGH;
863 cfg->type = V4L2_MBUS_PARALLEL;
864 cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
865
866 return 0;
867}
868
869static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
870 .s_crop = mt9m111_s_crop,
871 .g_crop = mt9m111_g_crop,
872 .cropcap = mt9m111_cropcap,
873 .g_mbus_config = mt9m111_g_mbus_config,
874};
875
876static const struct v4l2_subdev_pad_ops mt9m111_subdev_pad_ops = {
877 .enum_mbus_code = mt9m111_enum_mbus_code,
878 .get_fmt = mt9m111_get_fmt,
879 .set_fmt = mt9m111_set_fmt,
880};
881
882static struct v4l2_subdev_ops mt9m111_subdev_ops = {
883 .core = &mt9m111_subdev_core_ops,
884 .video = &mt9m111_subdev_video_ops,
885 .pad = &mt9m111_subdev_pad_ops,
886};
887
888/*
889 * Interface active, can use i2c. If it fails, it can indeed mean, that
890 * this wasn't our capture interface, so, we wait for the right one
891 */
892static int mt9m111_video_probe(struct i2c_client *client)
893{
894 struct mt9m111 *mt9m111 = to_mt9m111(client);
895 s32 data;
896 int ret;
897
898 ret = mt9m111_s_power(&mt9m111->subdev, 1);
899 if (ret < 0)
900 return ret;
901
902 data = reg_read(CHIP_VERSION);
903
904 switch (data) {
905 case 0x143a: /* MT9M111 or MT9M131 */
906 dev_info(&client->dev,
907 "Detected a MT9M111/MT9M131 chip ID %x\n", data);
908 break;
909 case 0x148c: /* MT9M112 */
910 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
911 break;
912 default:
913 dev_err(&client->dev,
914 "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
915 data);
916 ret = -ENODEV;
917 goto done;
918 }
919
920 ret = mt9m111_init(mt9m111);
921 if (ret)
922 goto done;
923
924 ret = v4l2_ctrl_handler_setup(&mt9m111->hdl);
925
926done:
927 mt9m111_s_power(&mt9m111->subdev, 0);
928 return ret;
929}
930
931static int mt9m111_probe(struct i2c_client *client,
932 const struct i2c_device_id *did)
933{
934 struct mt9m111 *mt9m111;
935 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
936 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
937 int ret;
938
939 if (client->dev.of_node) {
940 ssdd = devm_kzalloc(&client->dev, sizeof(*ssdd), GFP_KERNEL);
941 if (!ssdd)
942 return -ENOMEM;
943 client->dev.platform_data = ssdd;
944 }
945 if (!ssdd) {
946 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
947 return -EINVAL;
948 }
949
950 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
951 dev_warn(&adapter->dev,
952 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
953 return -EIO;
954 }
955
956 mt9m111 = devm_kzalloc(&client->dev, sizeof(struct mt9m111), GFP_KERNEL);
957 if (!mt9m111)
958 return -ENOMEM;
959
960 mt9m111->clk = v4l2_clk_get(&client->dev, "mclk");
961 if (IS_ERR(mt9m111->clk))
962 return -EPROBE_DEFER;
963
964 /* Default HIGHPOWER context */
965 mt9m111->ctx = &context_b;
966
967 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
968 v4l2_ctrl_handler_init(&mt9m111->hdl, 5);
969 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
970 V4L2_CID_VFLIP, 0, 1, 1, 0);
971 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
972 V4L2_CID_HFLIP, 0, 1, 1, 0);
973 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
974 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
975 mt9m111->gain = v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
976 V4L2_CID_GAIN, 0, 63 * 2 * 2, 1, 32);
977 v4l2_ctrl_new_std_menu(&mt9m111->hdl,
978 &mt9m111_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
979 V4L2_EXPOSURE_AUTO);
980 mt9m111->subdev.ctrl_handler = &mt9m111->hdl;
981 if (mt9m111->hdl.error) {
982 ret = mt9m111->hdl.error;
983 goto out_clkput;
984 }
985
986 /* Second stage probe - when a capture adapter is there */
987 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
988 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
989 mt9m111->rect.width = MT9M111_MAX_WIDTH;
990 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
991 mt9m111->fmt = &mt9m111_colour_fmts[0];
992 mt9m111->lastpage = -1;
993 mutex_init(&mt9m111->power_lock);
994
995 ret = soc_camera_power_init(&client->dev, ssdd);
996 if (ret < 0)
997 goto out_hdlfree;
998
999 ret = mt9m111_video_probe(client);
1000 if (ret < 0)
1001 goto out_hdlfree;
1002
1003 mt9m111->subdev.dev = &client->dev;
1004 ret = v4l2_async_register_subdev(&mt9m111->subdev);
1005 if (ret < 0)
1006 goto out_hdlfree;
1007
1008 return 0;
1009
1010out_hdlfree:
1011 v4l2_ctrl_handler_free(&mt9m111->hdl);
1012out_clkput:
1013 v4l2_clk_put(mt9m111->clk);
1014
1015 return ret;
1016}
1017
1018static int mt9m111_remove(struct i2c_client *client)
1019{
1020 struct mt9m111 *mt9m111 = to_mt9m111(client);
1021
1022 v4l2_async_unregister_subdev(&mt9m111->subdev);
1023 v4l2_clk_put(mt9m111->clk);
1024 v4l2_ctrl_handler_free(&mt9m111->hdl);
1025
1026 return 0;
1027}
1028static const struct of_device_id mt9m111_of_match[] = {
1029 { .compatible = "micron,mt9m111", },
1030 {},
1031};
1032MODULE_DEVICE_TABLE(of, mt9m111_of_match);
1033
1034static const struct i2c_device_id mt9m111_id[] = {
1035 { "mt9m111", 0 },
1036 { }
1037};
1038MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1039
1040static struct i2c_driver mt9m111_i2c_driver = {
1041 .driver = {
1042 .name = "mt9m111",
1043 .of_match_table = of_match_ptr(mt9m111_of_match),
1044 },
1045 .probe = mt9m111_probe,
1046 .remove = mt9m111_remove,
1047 .id_table = mt9m111_id,
1048};
1049
1050module_i2c_driver(mt9m111_i2c_driver);
1051
1052MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1053MODULE_AUTHOR("Robert Jarzmik");
1054MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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