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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
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31
32
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
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
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
184struct mt9m111_datafmt {
185 enum v4l2_mbus_pixelcode code;
186 enum v4l2_colorspace colorspace;
187};
188
189static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
190 {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
191 {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
192 {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
193 {V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG},
194 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
195 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
196 {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
197 {V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
198 {V4L2_MBUS_FMT_BGR565_2X8_LE, V4L2_COLORSPACE_SRGB},
199 {V4L2_MBUS_FMT_BGR565_2X8_BE, V4L2_COLORSPACE_SRGB},
200 {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
201 {V4L2_MBUS_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;
210 struct v4l2_clk *clk;
211 int width;
212 int height;
213 struct mutex power_lock;
214 int power_count;
215 const struct mt9m111_datafmt *fmt;
216 int lastpage;
217};
218
219
220static const struct mt9m111_datafmt *mt9m111_find_datafmt(struct mt9m111 *mt9m111,
221 enum v4l2_mbus_pixelcode 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, enum v4l2_mbus_pixelcode 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 != V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
349
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 == V4L2_MBUS_FMT_SBGGR8_1X8 ||
397 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
398
399 rect.width = ALIGN(rect.width, 2);
400 rect.height = ALIGN(rect.height, 2);
401
402 }
403
404
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_g_fmt(struct v4l2_subdev *sd,
451 struct v4l2_mbus_framefmt *mf)
452{
453 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
454
455 mf->width = mt9m111->width;
456 mf->height = mt9m111->height;
457 mf->code = mt9m111->fmt->code;
458 mf->colorspace = mt9m111->fmt->colorspace;
459 mf->field = V4L2_FIELD_NONE;
460
461 return 0;
462}
463
464static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111,
465 enum v4l2_mbus_pixelcode code)
466{
467 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
468 u16 data_outfmt2, mask_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
469 MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB |
470 MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 |
471 MT9M111_OUTFMT_RGB444x | MT9M111_OUTFMT_RGBx444 |
472 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
473 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
474 int ret;
475
476 switch (code) {
477 case V4L2_MBUS_FMT_SBGGR8_1X8:
478 data_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
479 MT9M111_OUTFMT_RGB;
480 break;
481 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
482 data_outfmt2 = MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB;
483 break;
484 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
485 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555 |
486 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
487 break;
488 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE:
489 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
490 break;
491 case V4L2_MBUS_FMT_RGB565_2X8_LE:
492 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
493 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
494 break;
495 case V4L2_MBUS_FMT_RGB565_2X8_BE:
496 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
497 break;
498 case V4L2_MBUS_FMT_BGR565_2X8_BE:
499 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
500 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
501 break;
502 case V4L2_MBUS_FMT_BGR565_2X8_LE:
503 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
504 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
505 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
506 break;
507 case V4L2_MBUS_FMT_UYVY8_2X8:
508 data_outfmt2 = 0;
509 break;
510 case V4L2_MBUS_FMT_VYUY8_2X8:
511 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
512 break;
513 case V4L2_MBUS_FMT_YUYV8_2X8:
514 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
515 break;
516 case V4L2_MBUS_FMT_YVYU8_2X8:
517 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
518 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
519 break;
520 default:
521 dev_err(&client->dev, "Pixel format not handled: %x\n", code);
522 return -EINVAL;
523 }
524
525 ret = mt9m111_reg_mask(client, context_a.output_fmt_ctrl2,
526 data_outfmt2, mask_outfmt2);
527 if (!ret)
528 ret = mt9m111_reg_mask(client, context_b.output_fmt_ctrl2,
529 data_outfmt2, mask_outfmt2);
530
531 return ret;
532}
533
534static int mt9m111_try_fmt(struct v4l2_subdev *sd,
535 struct v4l2_mbus_framefmt *mf)
536{
537 struct i2c_client *client = v4l2_get_subdevdata(sd);
538 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
539 const struct mt9m111_datafmt *fmt;
540 struct v4l2_rect *rect = &mt9m111->rect;
541 bool bayer;
542
543 fmt = mt9m111_find_datafmt(mt9m111, mf->code);
544
545 bayer = fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
546 fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE;
547
548
549
550
551
552 if (bayer) {
553 rect->width = ALIGN(rect->width, 2);
554 rect->height = ALIGN(rect->height, 2);
555 }
556
557 if (fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
558
559 mf->width = rect->width;
560 mf->height = rect->height;
561 } else {
562
563 if (mf->width > rect->width)
564 mf->width = rect->width;
565 if (mf->height > rect->height)
566 mf->height = rect->height;
567 }
568
569 dev_dbg(&client->dev, "%s(): %ux%u, code=%x\n", __func__,
570 mf->width, mf->height, fmt->code);
571
572 mf->code = fmt->code;
573 mf->colorspace = fmt->colorspace;
574
575 return 0;
576}
577
578static int mt9m111_s_fmt(struct v4l2_subdev *sd,
579 struct v4l2_mbus_framefmt *mf)
580{
581 const struct mt9m111_datafmt *fmt;
582 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
583 struct v4l2_rect *rect = &mt9m111->rect;
584 int ret;
585
586 mt9m111_try_fmt(sd, mf);
587 fmt = mt9m111_find_datafmt(mt9m111, mf->code);
588
589
590 ret = mt9m111_setup_geometry(mt9m111, rect, mf->width, mf->height, mf->code);
591 if (!ret)
592 ret = mt9m111_set_pixfmt(mt9m111, mf->code);
593 if (!ret) {
594 mt9m111->width = mf->width;
595 mt9m111->height = mf->height;
596 mt9m111->fmt = fmt;
597 }
598
599 return ret;
600}
601
602#ifdef CONFIG_VIDEO_ADV_DEBUG
603static int mt9m111_g_register(struct v4l2_subdev *sd,
604 struct v4l2_dbg_register *reg)
605{
606 struct i2c_client *client = v4l2_get_subdevdata(sd);
607 int val;
608
609 if (reg->reg > 0x2ff)
610 return -EINVAL;
611
612 val = mt9m111_reg_read(client, reg->reg);
613 reg->size = 2;
614 reg->val = (u64)val;
615
616 if (reg->val > 0xffff)
617 return -EIO;
618
619 return 0;
620}
621
622static int mt9m111_s_register(struct v4l2_subdev *sd,
623 const struct v4l2_dbg_register *reg)
624{
625 struct i2c_client *client = v4l2_get_subdevdata(sd);
626
627 if (reg->reg > 0x2ff)
628 return -EINVAL;
629
630 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
631 return -EIO;
632
633 return 0;
634}
635#endif
636
637static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask)
638{
639 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
640 int ret;
641
642 if (flip)
643 ret = mt9m111_reg_set(client, mt9m111->ctx->read_mode, mask);
644 else
645 ret = mt9m111_reg_clear(client, mt9m111->ctx->read_mode, mask);
646
647 return ret;
648}
649
650static int mt9m111_get_global_gain(struct mt9m111 *mt9m111)
651{
652 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
653 int data;
654
655 data = reg_read(GLOBAL_GAIN);
656 if (data >= 0)
657 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
658 (1 << ((data >> 9) & 1));
659 return data;
660}
661
662static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain)
663{
664 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
665 u16 val;
666
667 if (gain > 63 * 2 * 2)
668 return -EINVAL;
669
670 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
671 val = (1 << 10) | (1 << 9) | (gain / 4);
672 else if ((gain >= 64) && (gain < 64 * 2))
673 val = (1 << 9) | (gain / 2);
674 else
675 val = gain;
676
677 return reg_write(GLOBAL_GAIN, val);
678}
679
680static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int val)
681{
682 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
683
684 if (val == V4L2_EXPOSURE_AUTO)
685 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
686 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
687}
688
689static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on)
690{
691 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
692
693 if (on)
694 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
695 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
696}
697
698static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
699{
700 struct mt9m111 *mt9m111 = container_of(ctrl->handler,
701 struct mt9m111, hdl);
702
703 switch (ctrl->id) {
704 case V4L2_CID_VFLIP:
705 return mt9m111_set_flip(mt9m111, ctrl->val,
706 MT9M111_RMB_MIRROR_ROWS);
707 case V4L2_CID_HFLIP:
708 return mt9m111_set_flip(mt9m111, ctrl->val,
709 MT9M111_RMB_MIRROR_COLS);
710 case V4L2_CID_GAIN:
711 return mt9m111_set_global_gain(mt9m111, ctrl->val);
712 case V4L2_CID_EXPOSURE_AUTO:
713 return mt9m111_set_autoexposure(mt9m111, ctrl->val);
714 case V4L2_CID_AUTO_WHITE_BALANCE:
715 return mt9m111_set_autowhitebalance(mt9m111, ctrl->val);
716 }
717
718 return -EINVAL;
719}
720
721static int mt9m111_suspend(struct mt9m111 *mt9m111)
722{
723 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
724 int ret;
725
726 v4l2_ctrl_s_ctrl(mt9m111->gain, mt9m111_get_global_gain(mt9m111));
727
728 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
729 if (!ret)
730 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC |
731 MT9M111_RESET_OUTPUT_DISABLE |
732 MT9M111_RESET_ANALOG_STANDBY);
733 if (!ret)
734 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
735
736 return ret;
737}
738
739static void mt9m111_restore_state(struct mt9m111 *mt9m111)
740{
741 mt9m111_set_context(mt9m111, mt9m111->ctx);
742 mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code);
743 mt9m111_setup_geometry(mt9m111, &mt9m111->rect,
744 mt9m111->width, mt9m111->height, mt9m111->fmt->code);
745 v4l2_ctrl_handler_setup(&mt9m111->hdl);
746}
747
748static int mt9m111_resume(struct mt9m111 *mt9m111)
749{
750 int ret = mt9m111_enable(mt9m111);
751 if (!ret)
752 ret = mt9m111_reset(mt9m111);
753 if (!ret)
754 mt9m111_restore_state(mt9m111);
755
756 return ret;
757}
758
759static int mt9m111_init(struct mt9m111 *mt9m111)
760{
761 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
762 int ret;
763
764 ret = mt9m111_enable(mt9m111);
765 if (!ret)
766 ret = mt9m111_reset(mt9m111);
767 if (!ret)
768 ret = mt9m111_set_context(mt9m111, mt9m111->ctx);
769 if (ret)
770 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
771 return ret;
772}
773
774static int mt9m111_power_on(struct mt9m111 *mt9m111)
775{
776 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
777 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
778 int ret;
779
780 ret = soc_camera_power_on(&client->dev, ssdd, mt9m111->clk);
781 if (ret < 0)
782 return ret;
783
784 ret = mt9m111_resume(mt9m111);
785 if (ret < 0) {
786 dev_err(&client->dev, "Failed to resume the sensor: %d\n", ret);
787 soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
788 }
789
790 return ret;
791}
792
793static void mt9m111_power_off(struct mt9m111 *mt9m111)
794{
795 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
796 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
797
798 mt9m111_suspend(mt9m111);
799 soc_camera_power_off(&client->dev, ssdd, mt9m111->clk);
800}
801
802static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
803{
804 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
805 int ret = 0;
806
807 mutex_lock(&mt9m111->power_lock);
808
809
810
811
812
813 if (mt9m111->power_count == !on) {
814 if (on)
815 ret = mt9m111_power_on(mt9m111);
816 else
817 mt9m111_power_off(mt9m111);
818 }
819
820 if (!ret) {
821
822 mt9m111->power_count += on ? 1 : -1;
823 WARN_ON(mt9m111->power_count < 0);
824 }
825
826 mutex_unlock(&mt9m111->power_lock);
827 return ret;
828}
829
830static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
831 .s_ctrl = mt9m111_s_ctrl,
832};
833
834static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
835 .s_power = mt9m111_s_power,
836#ifdef CONFIG_VIDEO_ADV_DEBUG
837 .g_register = mt9m111_g_register,
838 .s_register = mt9m111_s_register,
839#endif
840};
841
842static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
843 enum v4l2_mbus_pixelcode *code)
844{
845 if (index >= ARRAY_SIZE(mt9m111_colour_fmts))
846 return -EINVAL;
847
848 *code = mt9m111_colour_fmts[index].code;
849 return 0;
850}
851
852static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,
853 struct v4l2_mbus_config *cfg)
854{
855 struct i2c_client *client = v4l2_get_subdevdata(sd);
856 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
857
858 cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
859 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
860 V4L2_MBUS_DATA_ACTIVE_HIGH;
861 cfg->type = V4L2_MBUS_PARALLEL;
862 cfg->flags = soc_camera_apply_board_flags(ssdd, cfg);
863
864 return 0;
865}
866
867static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
868 .s_mbus_fmt = mt9m111_s_fmt,
869 .g_mbus_fmt = mt9m111_g_fmt,
870 .try_mbus_fmt = mt9m111_try_fmt,
871 .s_crop = mt9m111_s_crop,
872 .g_crop = mt9m111_g_crop,
873 .cropcap = mt9m111_cropcap,
874 .enum_mbus_fmt = mt9m111_enum_fmt,
875 .g_mbus_config = mt9m111_g_mbus_config,
876};
877
878static struct v4l2_subdev_ops mt9m111_subdev_ops = {
879 .core = &mt9m111_subdev_core_ops,
880 .video = &mt9m111_subdev_video_ops,
881};
882
883
884
885
886
887static int mt9m111_video_probe(struct i2c_client *client)
888{
889 struct mt9m111 *mt9m111 = to_mt9m111(client);
890 s32 data;
891 int ret;
892
893 ret = mt9m111_s_power(&mt9m111->subdev, 1);
894 if (ret < 0)
895 return ret;
896
897 data = reg_read(CHIP_VERSION);
898
899 switch (data) {
900 case 0x143a:
901 dev_info(&client->dev,
902 "Detected a MT9M111/MT9M131 chip ID %x\n", data);
903 break;
904 case 0x148c:
905 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
906 break;
907 default:
908 dev_err(&client->dev,
909 "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
910 data);
911 ret = -ENODEV;
912 goto done;
913 }
914
915 ret = mt9m111_init(mt9m111);
916 if (ret)
917 goto done;
918
919 ret = v4l2_ctrl_handler_setup(&mt9m111->hdl);
920
921done:
922 mt9m111_s_power(&mt9m111->subdev, 0);
923 return ret;
924}
925
926static int mt9m111_probe(struct i2c_client *client,
927 const struct i2c_device_id *did)
928{
929 struct mt9m111 *mt9m111;
930 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
931 struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client);
932 int ret;
933
934 if (!ssdd) {
935 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
936 return -EINVAL;
937 }
938
939 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
940 dev_warn(&adapter->dev,
941 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
942 return -EIO;
943 }
944
945 mt9m111 = devm_kzalloc(&client->dev, sizeof(struct mt9m111), GFP_KERNEL);
946 if (!mt9m111)
947 return -ENOMEM;
948
949 mt9m111->clk = v4l2_clk_get(&client->dev, "mclk");
950 if (IS_ERR(mt9m111->clk))
951 return -EPROBE_DEFER;
952
953
954 mt9m111->ctx = &context_b;
955
956 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
957 v4l2_ctrl_handler_init(&mt9m111->hdl, 5);
958 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
959 V4L2_CID_VFLIP, 0, 1, 1, 0);
960 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
961 V4L2_CID_HFLIP, 0, 1, 1, 0);
962 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
963 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
964 mt9m111->gain = v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
965 V4L2_CID_GAIN, 0, 63 * 2 * 2, 1, 32);
966 v4l2_ctrl_new_std_menu(&mt9m111->hdl,
967 &mt9m111_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
968 V4L2_EXPOSURE_AUTO);
969 mt9m111->subdev.ctrl_handler = &mt9m111->hdl;
970 if (mt9m111->hdl.error) {
971 ret = mt9m111->hdl.error;
972 goto out_clkput;
973 }
974
975
976 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
977 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
978 mt9m111->rect.width = MT9M111_MAX_WIDTH;
979 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
980 mt9m111->fmt = &mt9m111_colour_fmts[0];
981 mt9m111->lastpage = -1;
982 mutex_init(&mt9m111->power_lock);
983
984 ret = soc_camera_power_init(&client->dev, ssdd);
985 if (ret < 0)
986 goto out_hdlfree;
987
988 ret = mt9m111_video_probe(client);
989 if (ret < 0)
990 goto out_hdlfree;
991
992 mt9m111->subdev.dev = &client->dev;
993 ret = v4l2_async_register_subdev(&mt9m111->subdev);
994 if (ret < 0)
995 goto out_hdlfree;
996
997 return 0;
998
999out_hdlfree:
1000 v4l2_ctrl_handler_free(&mt9m111->hdl);
1001out_clkput:
1002 v4l2_clk_put(mt9m111->clk);
1003
1004 return ret;
1005}
1006
1007static int mt9m111_remove(struct i2c_client *client)
1008{
1009 struct mt9m111 *mt9m111 = to_mt9m111(client);
1010
1011 v4l2_async_unregister_subdev(&mt9m111->subdev);
1012 v4l2_clk_put(mt9m111->clk);
1013 v4l2_device_unregister_subdev(&mt9m111->subdev);
1014 v4l2_ctrl_handler_free(&mt9m111->hdl);
1015
1016 return 0;
1017}
1018
1019static const struct i2c_device_id mt9m111_id[] = {
1020 { "mt9m111", 0 },
1021 { }
1022};
1023MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1024
1025static struct i2c_driver mt9m111_i2c_driver = {
1026 .driver = {
1027 .name = "mt9m111",
1028 },
1029 .probe = mt9m111_probe,
1030 .remove = mt9m111_remove,
1031 .id_table = mt9m111_id,
1032};
1033
1034module_i2c_driver(mt9m111_i2c_driver);
1035
1036MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1037MODULE_AUTHOR("Robert Jarzmik");
1038MODULE_LICENSE("GPL");
1039
