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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-common.h>
21#include <media/v4l2-ctrls.h>
22#include <media/v4l2-chip-ident.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 i2c_board_info and call i2c_register_board_info()
28 */
29
30/*
31 * Sensor core register addresses (0x000..0x0ff)
32 */
33#define MT9M111_CHIP_VERSION 0x000
34#define MT9M111_ROW_START 0x001
35#define MT9M111_COLUMN_START 0x002
36#define MT9M111_WINDOW_HEIGHT 0x003
37#define MT9M111_WINDOW_WIDTH 0x004
38#define MT9M111_HORIZONTAL_BLANKING_B 0x005
39#define MT9M111_VERTICAL_BLANKING_B 0x006
40#define MT9M111_HORIZONTAL_BLANKING_A 0x007
41#define MT9M111_VERTICAL_BLANKING_A 0x008
42#define MT9M111_SHUTTER_WIDTH 0x009
43#define MT9M111_ROW_SPEED 0x00a
44#define MT9M111_EXTRA_DELAY 0x00b
45#define MT9M111_SHUTTER_DELAY 0x00c
46#define MT9M111_RESET 0x00d
47#define MT9M111_READ_MODE_B 0x020
48#define MT9M111_READ_MODE_A 0x021
49#define MT9M111_FLASH_CONTROL 0x023
50#define MT9M111_GREEN1_GAIN 0x02b
51#define MT9M111_BLUE_GAIN 0x02c
52#define MT9M111_RED_GAIN 0x02d
53#define MT9M111_GREEN2_GAIN 0x02e
54#define MT9M111_GLOBAL_GAIN 0x02f
55#define MT9M111_CONTEXT_CONTROL 0x0c8
56#define MT9M111_PAGE_MAP 0x0f0
57#define MT9M111_BYTE_WISE_ADDR 0x0f1
58
59#define MT9M111_RESET_SYNC_CHANGES (1 << 15)
60#define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
61#define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
62#define MT9M111_RESET_RESET_SOC (1 << 5)
63#define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
64#define MT9M111_RESET_CHIP_ENABLE (1 << 3)
65#define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
66#define MT9M111_RESET_RESTART_FRAME (1 << 1)
67#define MT9M111_RESET_RESET_MODE (1 << 0)
68
69#define MT9M111_RM_FULL_POWER_RD (0 << 10)
70#define MT9M111_RM_LOW_POWER_RD (1 << 10)
71#define MT9M111_RM_COL_SKIP_4X (1 << 5)
72#define MT9M111_RM_ROW_SKIP_4X (1 << 4)
73#define MT9M111_RM_COL_SKIP_2X (1 << 3)
74#define MT9M111_RM_ROW_SKIP_2X (1 << 2)
75#define MT9M111_RMB_MIRROR_COLS (1 << 1)
76#define MT9M111_RMB_MIRROR_ROWS (1 << 0)
77#define MT9M111_CTXT_CTRL_RESTART (1 << 15)
78#define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
79#define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
80#define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
81#define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
82#define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
83#define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
84#define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
85#define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
86#define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
87
88/*
89 * Colorpipe register addresses (0x100..0x1ff)
90 */
91#define MT9M111_OPER_MODE_CTRL 0x106
92#define MT9M111_OUTPUT_FORMAT_CTRL 0x108
93#define MT9M111_REDUCER_XZOOM_B 0x1a0
94#define MT9M111_REDUCER_XSIZE_B 0x1a1
95#define MT9M111_REDUCER_YZOOM_B 0x1a3
96#define MT9M111_REDUCER_YSIZE_B 0x1a4
97#define MT9M111_REDUCER_XZOOM_A 0x1a6
98#define MT9M111_REDUCER_XSIZE_A 0x1a7
99#define MT9M111_REDUCER_YZOOM_A 0x1a9
100#define MT9M111_REDUCER_YSIZE_A 0x1aa
101
102#define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
103#define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
104
105#define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
106#define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
107#define MT9M111_OUTFMT_FLIP_BAYER_COL (1 << 9)
108#define MT9M111_OUTFMT_FLIP_BAYER_ROW (1 << 8)
109#define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
110#define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
111#define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
112#define MT9M111_OUTFMT_RGB (1 << 8)
113#define MT9M111_OUTFMT_RGB565 (0 << 6)
114#define MT9M111_OUTFMT_RGB555 (1 << 6)
115#define MT9M111_OUTFMT_RGB444x (2 << 6)
116#define MT9M111_OUTFMT_RGBx444 (3 << 6)
117#define MT9M111_OUTFMT_TST_RAMP_OFF (0 << 4)
118#define MT9M111_OUTFMT_TST_RAMP_COL (1 << 4)
119#define MT9M111_OUTFMT_TST_RAMP_ROW (2 << 4)
120#define MT9M111_OUTFMT_TST_RAMP_FRAME (3 << 4)
121#define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
122#define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
123#define MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN (1 << 1)
124#define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B (1 << 0)
125
126/*
127 * Camera control register addresses (0x200..0x2ff not implemented)
128 */
129
130#define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
131#define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
132#define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
133#define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
134#define reg_mask(reg, val, mask) mt9m111_reg_mask(client, MT9M111_##reg, \
135 (val), (mask))
136
137#define MT9M111_MIN_DARK_ROWS 8
138#define MT9M111_MIN_DARK_COLS 26
139#define MT9M111_MAX_HEIGHT 1024
140#define MT9M111_MAX_WIDTH 1280
141
142struct mt9m111_context {
143 u16 read_mode;
144 u16 blanking_h;
145 u16 blanking_v;
146 u16 reducer_xzoom;
147 u16 reducer_yzoom;
148 u16 reducer_xsize;
149 u16 reducer_ysize;
150 u16 output_fmt_ctrl2;
151 u16 control;
152};
153
154static struct mt9m111_context context_a = {
155 .read_mode = MT9M111_READ_MODE_A,
156 .blanking_h = MT9M111_HORIZONTAL_BLANKING_A,
157 .blanking_v = MT9M111_VERTICAL_BLANKING_A,
158 .reducer_xzoom = MT9M111_REDUCER_XZOOM_A,
159 .reducer_yzoom = MT9M111_REDUCER_YZOOM_A,
160 .reducer_xsize = MT9M111_REDUCER_XSIZE_A,
161 .reducer_ysize = MT9M111_REDUCER_YSIZE_A,
162 .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_A,
163 .control = MT9M111_CTXT_CTRL_RESTART,
164};
165
166static struct mt9m111_context context_b = {
167 .read_mode = MT9M111_READ_MODE_B,
168 .blanking_h = MT9M111_HORIZONTAL_BLANKING_B,
169 .blanking_v = MT9M111_VERTICAL_BLANKING_B,
170 .reducer_xzoom = MT9M111_REDUCER_XZOOM_B,
171 .reducer_yzoom = MT9M111_REDUCER_YZOOM_B,
172 .reducer_xsize = MT9M111_REDUCER_XSIZE_B,
173 .reducer_ysize = MT9M111_REDUCER_YSIZE_B,
174 .output_fmt_ctrl2 = MT9M111_OUTPUT_FORMAT_CTRL2_B,
175 .control = MT9M111_CTXT_CTRL_RESTART |
176 MT9M111_CTXT_CTRL_DEFECTCOR_B | MT9M111_CTXT_CTRL_RESIZE_B |
177 MT9M111_CTXT_CTRL_CTRL2_B | MT9M111_CTXT_CTRL_GAMMA_B |
178 MT9M111_CTXT_CTRL_READ_MODE_B | MT9M111_CTXT_CTRL_VBLANK_SEL_B |
179 MT9M111_CTXT_CTRL_HBLANK_SEL_B,
180};
181
182/* MT9M111 has only one fixed colorspace per pixelcode */
183struct mt9m111_datafmt {
184 enum v4l2_mbus_pixelcode code;
185 enum v4l2_colorspace colorspace;
186};
187
188static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
189 {V4L2_MBUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},
190 {V4L2_MBUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},
191 {V4L2_MBUS_FMT_UYVY8_2X8, V4L2_COLORSPACE_JPEG},
192 {V4L2_MBUS_FMT_VYUY8_2X8, V4L2_COLORSPACE_JPEG},
193 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
194 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},
195 {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
196 {V4L2_MBUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},
197 {V4L2_MBUS_FMT_BGR565_2X8_LE, V4L2_COLORSPACE_SRGB},
198 {V4L2_MBUS_FMT_BGR565_2X8_BE, V4L2_COLORSPACE_SRGB},
199 {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
200 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
201};
202
203struct mt9m111 {
204 struct v4l2_subdev subdev;
205 struct v4l2_ctrl_handler hdl;
206 struct v4l2_ctrl *gain;
207 int model; /* V4L2_IDENT_MT9M111 or V4L2_IDENT_MT9M112 code
208 * from v4l2-chip-ident.h */
209 struct mt9m111_context *ctx;
210 struct v4l2_rect rect; /* cropping rectangle */
211 int width; /* output */
212 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 unsigned char datawidth;
218};
219
220/* Find a data format by a pixel code */
221static const struct mt9m111_datafmt *mt9m111_find_datafmt(struct mt9m111 *mt9m111,
222 enum v4l2_mbus_pixelcode code)
223{
224 int i;
225 for (i = 0; i < ARRAY_SIZE(mt9m111_colour_fmts); i++)
226 if (mt9m111_colour_fmts[i].code == code)
227 return mt9m111_colour_fmts + i;
228
229 return mt9m111->fmt;
230}
231
232static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
233{
234 return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
235}
236
237static int reg_page_map_set(struct i2c_client *client, const u16 reg)
238{
239 int ret;
240 u16 page;
241 struct mt9m111 *mt9m111 = to_mt9m111(client);
242
243 page = (reg >> 8);
244 if (page == mt9m111->lastpage)
245 return 0;
246 if (page > 2)
247 return -EINVAL;
248
249 ret = i2c_smbus_write_word_swapped(client, MT9M111_PAGE_MAP, page);
250 if (!ret)
251 mt9m111->lastpage = page;
252 return ret;
253}
254
255static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
256{
257 int ret;
258
259 ret = reg_page_map_set(client, reg);
260 if (!ret)
261 ret = i2c_smbus_read_word_swapped(client, reg & 0xff);
262
263 dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
264 return ret;
265}
266
267static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
268 const u16 data)
269{
270 int ret;
271
272 ret = reg_page_map_set(client, reg);
273 if (!ret)
274 ret = i2c_smbus_write_word_swapped(client, reg & 0xff, data);
275 dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
276 return ret;
277}
278
279static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
280 const u16 data)
281{
282 int ret;
283
284 ret = mt9m111_reg_read(client, reg);
285 if (ret >= 0)
286 ret = mt9m111_reg_write(client, reg, ret | data);
287 return ret;
288}
289
290static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
291 const u16 data)
292{
293 int ret;
294
295 ret = mt9m111_reg_read(client, reg);
296 if (ret >= 0)
297 ret = mt9m111_reg_write(client, reg, ret & ~data);
298 return ret;
299}
300
301static int mt9m111_reg_mask(struct i2c_client *client, const u16 reg,
302 const u16 data, const u16 mask)
303{
304 int ret;
305
306 ret = mt9m111_reg_read(client, reg);
307 if (ret >= 0)
308 ret = mt9m111_reg_write(client, reg, (ret & ~mask) | data);
309 return ret;
310}
311
312static int mt9m111_set_context(struct mt9m111 *mt9m111,
313 struct mt9m111_context *ctx)
314{
315 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
316 return reg_write(CONTEXT_CONTROL, ctx->control);
317}
318
319static int mt9m111_setup_rect_ctx(struct mt9m111 *mt9m111,
320 struct mt9m111_context *ctx, struct v4l2_rect *rect,
321 unsigned int width, unsigned int height)
322{
323 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
324 int ret = mt9m111_reg_write(client, ctx->reducer_xzoom, rect->width);
325 if (!ret)
326 ret = mt9m111_reg_write(client, ctx->reducer_yzoom, rect->height);
327 if (!ret)
328 ret = mt9m111_reg_write(client, ctx->reducer_xsize, width);
329 if (!ret)
330 ret = mt9m111_reg_write(client, ctx->reducer_ysize, height);
331 return ret;
332}
333
334static int mt9m111_setup_geometry(struct mt9m111 *mt9m111, struct v4l2_rect *rect,
335 int width, int height, enum v4l2_mbus_pixelcode code)
336{
337 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
338 int ret;
339
340 ret = reg_write(COLUMN_START, rect->left);
341 if (!ret)
342 ret = reg_write(ROW_START, rect->top);
343
344 if (!ret)
345 ret = reg_write(WINDOW_WIDTH, rect->width);
346 if (!ret)
347 ret = reg_write(WINDOW_HEIGHT, rect->height);
348
349 if (code != V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
350 /* IFP in use, down-scaling possible */
351 if (!ret)
352 ret = mt9m111_setup_rect_ctx(mt9m111, &context_b,
353 rect, width, height);
354 if (!ret)
355 ret = mt9m111_setup_rect_ctx(mt9m111, &context_a,
356 rect, width, height);
357 }
358
359 dev_dbg(&client->dev, "%s(%x): %ux%u@%u:%u -> %ux%u = %d\n",
360 __func__, code, rect->width, rect->height, rect->left, rect->top,
361 width, height, ret);
362
363 return ret;
364}
365
366static int mt9m111_enable(struct mt9m111 *mt9m111)
367{
368 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
369 return reg_write(RESET, MT9M111_RESET_CHIP_ENABLE);
370}
371
372static int mt9m111_reset(struct mt9m111 *mt9m111)
373{
374 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
375 int ret;
376
377 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
378 if (!ret)
379 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
380 if (!ret)
381 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
382 | MT9M111_RESET_RESET_SOC);
383
384 return ret;
385}
386
387static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
388{
389 struct v4l2_rect rect = a->c;
390 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
391 int width, height;
392 int ret;
393
394 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
395 return -EINVAL;
396
397 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
398 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
399 /* Bayer format - even size lengths */
400 rect.width = ALIGN(rect.width, 2);
401 rect.height = ALIGN(rect.height, 2);
402 /* Let the user play with the starting pixel */
403 }
404
405 /* FIXME: the datasheet doesn't specify minimum sizes */
406 soc_camera_limit_side(&rect.left, &rect.width,
407 MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
408
409 soc_camera_limit_side(&rect.top, &rect.height,
410 MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
411
412 width = min(mt9m111->width, rect.width);
413 height = min(mt9m111->height, rect.height);
414
415 ret = mt9m111_setup_geometry(mt9m111, &rect, width, height, mt9m111->fmt->code);
416 if (!ret) {
417 mt9m111->rect = rect;
418 mt9m111->width = width;
419 mt9m111->height = height;
420 }
421
422 return ret;
423}
424
425static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
426{
427 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
428
429 a->c = mt9m111->rect;
430 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
431
432 return 0;
433}
434
435static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
436{
437 if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
438 return -EINVAL;
439
440 a->bounds.left = MT9M111_MIN_DARK_COLS;
441 a->bounds.top = MT9M111_MIN_DARK_ROWS;
442 a->bounds.width = MT9M111_MAX_WIDTH;
443 a->bounds.height = MT9M111_MAX_HEIGHT;
444 a->defrect = a->bounds;
445 a->pixelaspect.numerator = 1;
446 a->pixelaspect.denominator = 1;
447
448 return 0;
449}
450
451static int mt9m111_g_fmt(struct v4l2_subdev *sd,
452 struct v4l2_mbus_framefmt *mf)
453{
454 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
455
456 mf->width = mt9m111->width;
457 mf->height = mt9m111->height;
458 mf->code = mt9m111->fmt->code;
459 mf->colorspace = mt9m111->fmt->colorspace;
460 mf->field = V4L2_FIELD_NONE;
461
462 return 0;
463}
464
465static int mt9m111_set_pixfmt(struct mt9m111 *mt9m111,
466 enum v4l2_mbus_pixelcode code)
467{
468 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
469 u16 data_outfmt2, mask_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
470 MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB |
471 MT9M111_OUTFMT_RGB565 | MT9M111_OUTFMT_RGB555 |
472 MT9M111_OUTFMT_RGB444x | MT9M111_OUTFMT_RGBx444 |
473 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
474 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
475 int ret;
476
477 switch (code) {
478 case V4L2_MBUS_FMT_SBGGR8_1X8:
479 data_outfmt2 = MT9M111_OUTFMT_PROCESSED_BAYER |
480 MT9M111_OUTFMT_RGB;
481 break;
482 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
483 data_outfmt2 = MT9M111_OUTFMT_BYPASS_IFP | MT9M111_OUTFMT_RGB;
484 break;
485 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
486 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555 |
487 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
488 break;
489 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_BE:
490 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
491 break;
492 case V4L2_MBUS_FMT_RGB565_2X8_LE:
493 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
494 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
495 break;
496 case V4L2_MBUS_FMT_RGB565_2X8_BE:
497 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
498 break;
499 case V4L2_MBUS_FMT_BGR565_2X8_BE:
500 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
501 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
502 break;
503 case V4L2_MBUS_FMT_BGR565_2X8_LE:
504 data_outfmt2 = MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565 |
505 MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
506 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
507 break;
508 case V4L2_MBUS_FMT_UYVY8_2X8:
509 data_outfmt2 = 0;
510 break;
511 case V4L2_MBUS_FMT_VYUY8_2X8:
512 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
513 break;
514 case V4L2_MBUS_FMT_YUYV8_2X8:
515 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN;
516 break;
517 case V4L2_MBUS_FMT_YVYU8_2X8:
518 data_outfmt2 = MT9M111_OUTFMT_SWAP_YCbCr_C_Y_RGB_EVEN |
519 MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr_RGB_R_B;
520 break;
521 default:
522 dev_err(&client->dev, "Pixel format not handled: %x\n", code);
523 return -EINVAL;
524 }
525
526 ret = mt9m111_reg_mask(client, context_a.output_fmt_ctrl2,
527 data_outfmt2, mask_outfmt2);
528 if (!ret)
529 ret = mt9m111_reg_mask(client, context_b.output_fmt_ctrl2,
530 data_outfmt2, mask_outfmt2);
531
532 return ret;
533}
534
535static int mt9m111_try_fmt(struct v4l2_subdev *sd,
536 struct v4l2_mbus_framefmt *mf)
537{
538 struct i2c_client *client = v4l2_get_subdevdata(sd);
539 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
540 const struct mt9m111_datafmt *fmt;
541 struct v4l2_rect *rect = &mt9m111->rect;
542 bool bayer;
543
544 fmt = mt9m111_find_datafmt(mt9m111, mf->code);
545
546 bayer = fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
547 fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE;
548
549 /*
550 * With Bayer format enforce even side lengths, but let the user play
551 * with the starting pixel
552 */
553 if (bayer) {
554 rect->width = ALIGN(rect->width, 2);
555 rect->height = ALIGN(rect->height, 2);
556 }
557
558 if (fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
559 /* IFP bypass mode, no scaling */
560 mf->width = rect->width;
561 mf->height = rect->height;
562 } else {
563 /* No upscaling */
564 if (mf->width > rect->width)
565 mf->width = rect->width;
566 if (mf->height > rect->height)
567 mf->height = rect->height;
568 }
569
570 dev_dbg(&client->dev, "%s(): %ux%u, code=%x\n", __func__,
571 mf->width, mf->height, fmt->code);
572
573 mf->code = fmt->code;
574 mf->colorspace = fmt->colorspace;
575
576 return 0;
577}
578
579static int mt9m111_s_fmt(struct v4l2_subdev *sd,
580 struct v4l2_mbus_framefmt *mf)
581{
582 const struct mt9m111_datafmt *fmt;
583 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
584 struct v4l2_rect *rect = &mt9m111->rect;
585 int ret;
586
587 mt9m111_try_fmt(sd, mf);
588 fmt = mt9m111_find_datafmt(mt9m111, mf->code);
589 /* try_fmt() guarantees fmt != NULL && fmt->code == mf->code */
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
603static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
604 struct v4l2_dbg_chip_ident *id)
605{
606 struct i2c_client *client = v4l2_get_subdevdata(sd);
607 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
608
609 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
610 return -EINVAL;
611
612 if (id->match.addr != client->addr)
613 return -ENODEV;
614
615 id->ident = mt9m111->model;
616 id->revision = 0;
617
618 return 0;
619}
620
621#ifdef CONFIG_VIDEO_ADV_DEBUG
622static int mt9m111_g_register(struct v4l2_subdev *sd,
623 struct v4l2_dbg_register *reg)
624{
625 struct i2c_client *client = v4l2_get_subdevdata(sd);
626 int val;
627
628 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
629 return -EINVAL;
630 if (reg->match.addr != client->addr)
631 return -ENODEV;
632
633 val = mt9m111_reg_read(client, reg->reg);
634 reg->size = 2;
635 reg->val = (u64)val;
636
637 if (reg->val > 0xffff)
638 return -EIO;
639
640 return 0;
641}
642
643static int mt9m111_s_register(struct v4l2_subdev *sd,
644 struct v4l2_dbg_register *reg)
645{
646 struct i2c_client *client = v4l2_get_subdevdata(sd);
647
648 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
649 return -EINVAL;
650
651 if (reg->match.addr != client->addr)
652 return -ENODEV;
653
654 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
655 return -EIO;
656
657 return 0;
658}
659#endif
660
661static int mt9m111_set_flip(struct mt9m111 *mt9m111, int flip, int mask)
662{
663 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
664 int ret;
665
666 if (flip)
667 ret = mt9m111_reg_set(client, mt9m111->ctx->read_mode, mask);
668 else
669 ret = mt9m111_reg_clear(client, mt9m111->ctx->read_mode, mask);
670
671 return ret;
672}
673
674static int mt9m111_get_global_gain(struct mt9m111 *mt9m111)
675{
676 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
677 int data;
678
679 data = reg_read(GLOBAL_GAIN);
680 if (data >= 0)
681 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
682 (1 << ((data >> 9) & 1));
683 return data;
684}
685
686static int mt9m111_set_global_gain(struct mt9m111 *mt9m111, int gain)
687{
688 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
689 u16 val;
690
691 if (gain > 63 * 2 * 2)
692 return -EINVAL;
693
694 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
695 val = (1 << 10) | (1 << 9) | (gain / 4);
696 else if ((gain >= 64) && (gain < 64 * 2))
697 val = (1 << 9) | (gain / 2);
698 else
699 val = gain;
700
701 return reg_write(GLOBAL_GAIN, val);
702}
703
704static int mt9m111_set_autoexposure(struct mt9m111 *mt9m111, int on)
705{
706 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
707
708 if (on)
709 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
710 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
711}
712
713static int mt9m111_set_autowhitebalance(struct mt9m111 *mt9m111, int on)
714{
715 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
716
717 if (on)
718 return reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
719 return reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
720}
721
722static int mt9m111_s_ctrl(struct v4l2_ctrl *ctrl)
723{
724 struct mt9m111 *mt9m111 = container_of(ctrl->handler,
725 struct mt9m111, hdl);
726
727 switch (ctrl->id) {
728 case V4L2_CID_VFLIP:
729 return mt9m111_set_flip(mt9m111, ctrl->val,
730 MT9M111_RMB_MIRROR_ROWS);
731 case V4L2_CID_HFLIP:
732 return mt9m111_set_flip(mt9m111, ctrl->val,
733 MT9M111_RMB_MIRROR_COLS);
734 case V4L2_CID_GAIN:
735 return mt9m111_set_global_gain(mt9m111, ctrl->val);
736 case V4L2_CID_EXPOSURE_AUTO:
737 return mt9m111_set_autoexposure(mt9m111, ctrl->val);
738 case V4L2_CID_AUTO_WHITE_BALANCE:
739 return mt9m111_set_autowhitebalance(mt9m111, ctrl->val);
740 }
741
742 return -EINVAL;
743}
744
745static int mt9m111_suspend(struct mt9m111 *mt9m111)
746{
747 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
748 int ret;
749
750 v4l2_ctrl_s_ctrl(mt9m111->gain, mt9m111_get_global_gain(mt9m111));
751
752 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
753 if (!ret)
754 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC |
755 MT9M111_RESET_OUTPUT_DISABLE |
756 MT9M111_RESET_ANALOG_STANDBY);
757 if (!ret)
758 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
759
760 return ret;
761}
762
763static void mt9m111_restore_state(struct mt9m111 *mt9m111)
764{
765 mt9m111_set_context(mt9m111, mt9m111->ctx);
766 mt9m111_set_pixfmt(mt9m111, mt9m111->fmt->code);
767 mt9m111_setup_geometry(mt9m111, &mt9m111->rect,
768 mt9m111->width, mt9m111->height, mt9m111->fmt->code);
769 v4l2_ctrl_handler_setup(&mt9m111->hdl);
770}
771
772static int mt9m111_resume(struct mt9m111 *mt9m111)
773{
774 int ret = mt9m111_enable(mt9m111);
775 if (!ret)
776 ret = mt9m111_reset(mt9m111);
777 if (!ret)
778 mt9m111_restore_state(mt9m111);
779
780 return ret;
781}
782
783static int mt9m111_init(struct mt9m111 *mt9m111)
784{
785 struct i2c_client *client = v4l2_get_subdevdata(&mt9m111->subdev);
786 int ret;
787
788 /* Default HIGHPOWER context */
789 mt9m111->ctx = &context_b;
790 ret = mt9m111_enable(mt9m111);
791 if (!ret)
792 ret = mt9m111_reset(mt9m111);
793 if (!ret)
794 ret = mt9m111_set_context(mt9m111, mt9m111->ctx);
795 if (ret)
796 dev_err(&client->dev, "mt9m111 init failed: %d\n", ret);
797 return ret;
798}
799
800/*
801 * Interface active, can use i2c. If it fails, it can indeed mean, that
802 * this wasn't our capture interface, so, we wait for the right one
803 */
804static int mt9m111_video_probe(struct i2c_client *client)
805{
806 struct mt9m111 *mt9m111 = to_mt9m111(client);
807 s32 data;
808 int ret;
809
810 data = reg_read(CHIP_VERSION);
811
812 switch (data) {
813 case 0x143a: /* MT9M111 or MT9M131 */
814 mt9m111->model = V4L2_IDENT_MT9M111;
815 dev_info(&client->dev,
816 "Detected a MT9M111/MT9M131 chip ID %x\n", data);
817 break;
818 case 0x148c: /* MT9M112 */
819 mt9m111->model = V4L2_IDENT_MT9M112;
820 dev_info(&client->dev, "Detected a MT9M112 chip ID %x\n", data);
821 break;
822 default:
823 dev_err(&client->dev,
824 "No MT9M111/MT9M112/MT9M131 chip detected register read %x\n",
825 data);
826 return -ENODEV;
827 }
828
829 ret = mt9m111_init(mt9m111);
830 if (ret)
831 return ret;
832 return v4l2_ctrl_handler_setup(&mt9m111->hdl);
833}
834
835static int mt9m111_s_power(struct v4l2_subdev *sd, int on)
836{
837 struct mt9m111 *mt9m111 = container_of(sd, struct mt9m111, subdev);
838 struct i2c_client *client = v4l2_get_subdevdata(sd);
839 int ret = 0;
840
841 mutex_lock(&mt9m111->power_lock);
842
843 /*
844 * If the power count is modified from 0 to != 0 or from != 0 to 0,
845 * update the power state.
846 */
847 if (mt9m111->power_count == !on) {
848 if (on) {
849 ret = mt9m111_resume(mt9m111);
850 if (ret) {
851 dev_err(&client->dev,
852 "Failed to resume the sensor: %d\n", ret);
853 goto out;
854 }
855 } else {
856 mt9m111_suspend(mt9m111);
857 }
858 }
859
860 /* Update the power count. */
861 mt9m111->power_count += on ? 1 : -1;
862 WARN_ON(mt9m111->power_count < 0);
863
864out:
865 mutex_unlock(&mt9m111->power_lock);
866 return ret;
867}
868
869static const struct v4l2_ctrl_ops mt9m111_ctrl_ops = {
870 .s_ctrl = mt9m111_s_ctrl,
871};
872
873static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
874 .g_chip_ident = mt9m111_g_chip_ident,
875 .s_power = mt9m111_s_power,
876#ifdef CONFIG_VIDEO_ADV_DEBUG
877 .g_register = mt9m111_g_register,
878 .s_register = mt9m111_s_register,
879#endif
880};
881
882static int mt9m111_enum_fmt(struct v4l2_subdev *sd, unsigned int index,
883 enum v4l2_mbus_pixelcode *code)
884{
885 if (index >= ARRAY_SIZE(mt9m111_colour_fmts))
886 return -EINVAL;
887
888 *code = mt9m111_colour_fmts[index].code;
889 return 0;
890}
891
892static int mt9m111_g_mbus_config(struct v4l2_subdev *sd,
893 struct v4l2_mbus_config *cfg)
894{
895 struct i2c_client *client = v4l2_get_subdevdata(sd);
896 struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
897
898 cfg->flags = V4L2_MBUS_MASTER | V4L2_MBUS_PCLK_SAMPLE_RISING |
899 V4L2_MBUS_HSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_HIGH |
900 V4L2_MBUS_DATA_ACTIVE_HIGH;
901 cfg->type = V4L2_MBUS_PARALLEL;
902 cfg->flags = soc_camera_apply_board_flags(icl, cfg);
903
904 return 0;
905}
906
907static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
908 .s_mbus_fmt = mt9m111_s_fmt,
909 .g_mbus_fmt = mt9m111_g_fmt,
910 .try_mbus_fmt = mt9m111_try_fmt,
911 .s_crop = mt9m111_s_crop,
912 .g_crop = mt9m111_g_crop,
913 .cropcap = mt9m111_cropcap,
914 .enum_mbus_fmt = mt9m111_enum_fmt,
915 .g_mbus_config = mt9m111_g_mbus_config,
916};
917
918static struct v4l2_subdev_ops mt9m111_subdev_ops = {
919 .core = &mt9m111_subdev_core_ops,
920 .video = &mt9m111_subdev_video_ops,
921};
922
923static int mt9m111_probe(struct i2c_client *client,
924 const struct i2c_device_id *did)
925{
926 struct mt9m111 *mt9m111;
927 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
928 struct soc_camera_link *icl = soc_camera_i2c_to_link(client);
929 int ret;
930
931 if (!icl) {
932 dev_err(&client->dev, "mt9m111: driver needs platform data\n");
933 return -EINVAL;
934 }
935
936 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
937 dev_warn(&adapter->dev,
938 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
939 return -EIO;
940 }
941
942 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
943 if (!mt9m111)
944 return -ENOMEM;
945
946 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
947 v4l2_ctrl_handler_init(&mt9m111->hdl, 5);
948 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
949 V4L2_CID_VFLIP, 0, 1, 1, 0);
950 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
951 V4L2_CID_HFLIP, 0, 1, 1, 0);
952 v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
953 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);
954 mt9m111->gain = v4l2_ctrl_new_std(&mt9m111->hdl, &mt9m111_ctrl_ops,
955 V4L2_CID_GAIN, 0, 63 * 2 * 2, 1, 32);
956 v4l2_ctrl_new_std_menu(&mt9m111->hdl,
957 &mt9m111_ctrl_ops, V4L2_CID_EXPOSURE_AUTO, 1, 0,
958 V4L2_EXPOSURE_AUTO);
959 mt9m111->subdev.ctrl_handler = &mt9m111->hdl;
960 if (mt9m111->hdl.error) {
961 int err = mt9m111->hdl.error;
962
963 kfree(mt9m111);
964 return err;
965 }
966
967 /* Second stage probe - when a capture adapter is there */
968 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
969 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
970 mt9m111->rect.width = MT9M111_MAX_WIDTH;
971 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
972 mt9m111->fmt = &mt9m111_colour_fmts[0];
973 mt9m111->lastpage = -1;
974 mutex_init(&mt9m111->power_lock);
975
976 ret = mt9m111_video_probe(client);
977 if (ret) {
978 v4l2_ctrl_handler_free(&mt9m111->hdl);
979 kfree(mt9m111);
980 }
981
982 return ret;
983}
984
985static int mt9m111_remove(struct i2c_client *client)
986{
987 struct mt9m111 *mt9m111 = to_mt9m111(client);
988
989 v4l2_device_unregister_subdev(&mt9m111->subdev);
990 v4l2_ctrl_handler_free(&mt9m111->hdl);
991 kfree(mt9m111);
992
993 return 0;
994}
995
996static const struct i2c_device_id mt9m111_id[] = {
997 { "mt9m111", 0 },
998 { }
999};
1000MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1001
1002static struct i2c_driver mt9m111_i2c_driver = {
1003 .driver = {
1004 .name = "mt9m111",
1005 },
1006 .probe = mt9m111_probe,
1007 .remove = mt9m111_remove,
1008 .id_table = mt9m111_id,
1009};
1010
1011module_i2c_driver(mt9m111_i2c_driver);
1012
1013MODULE_DESCRIPTION("Micron/Aptina MT9M111/MT9M112/MT9M131 Camera driver");
1014MODULE_AUTHOR("Robert Jarzmik");
1015MODULE_LICENSE("GPL");