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Linux 2.6.34-rc3
[pohmelfs.git] / drivers / media / video / mt9m111.c
blobd35f536f9fc37fd6729211d9610adbfa2334c77e
1 /*
2 * Driver for MT9M111/MT9M112 CMOS Image Sensor from Micron
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
17 #include <media/v4l2-common.h>
18 #include <media/v4l2-chip-ident.h>
19 #include <media/soc_camera.h>
20
21 /*
22 * mt9m111 and mt9m112 i2c address is 0x5d or 0x48 (depending on SAddr pin)
23 * The platform has to define i2c_board_info and call i2c_register_board_info()
24 */
25
26 /* mt9m111: Sensor register addresses */
27 #define MT9M111_CHIP_VERSION 0x000
28 #define MT9M111_ROW_START 0x001
29 #define MT9M111_COLUMN_START 0x002
30 #define MT9M111_WINDOW_HEIGHT 0x003
31 #define MT9M111_WINDOW_WIDTH 0x004
32 #define MT9M111_HORIZONTAL_BLANKING_B 0x005
33 #define MT9M111_VERTICAL_BLANKING_B 0x006
34 #define MT9M111_HORIZONTAL_BLANKING_A 0x007
35 #define MT9M111_VERTICAL_BLANKING_A 0x008
36 #define MT9M111_SHUTTER_WIDTH 0x009
37 #define MT9M111_ROW_SPEED 0x00a
38 #define MT9M111_EXTRA_DELAY 0x00b
39 #define MT9M111_SHUTTER_DELAY 0x00c
40 #define MT9M111_RESET 0x00d
41 #define MT9M111_READ_MODE_B 0x020
42 #define MT9M111_READ_MODE_A 0x021
43 #define MT9M111_FLASH_CONTROL 0x023
44 #define MT9M111_GREEN1_GAIN 0x02b
45 #define MT9M111_BLUE_GAIN 0x02c
46 #define MT9M111_RED_GAIN 0x02d
47 #define MT9M111_GREEN2_GAIN 0x02e
48 #define MT9M111_GLOBAL_GAIN 0x02f
49 #define MT9M111_CONTEXT_CONTROL 0x0c8
50 #define MT9M111_PAGE_MAP 0x0f0
51 #define MT9M111_BYTE_WISE_ADDR 0x0f1
52
53 #define MT9M111_RESET_SYNC_CHANGES (1 << 15)
54 #define MT9M111_RESET_RESTART_BAD_FRAME (1 << 9)
55 #define MT9M111_RESET_SHOW_BAD_FRAMES (1 << 8)
56 #define MT9M111_RESET_RESET_SOC (1 << 5)
57 #define MT9M111_RESET_OUTPUT_DISABLE (1 << 4)
58 #define MT9M111_RESET_CHIP_ENABLE (1 << 3)
59 #define MT9M111_RESET_ANALOG_STANDBY (1 << 2)
60 #define MT9M111_RESET_RESTART_FRAME (1 << 1)
61 #define MT9M111_RESET_RESET_MODE (1 << 0)
62
63 #define MT9M111_RMB_MIRROR_COLS (1 << 1)
64 #define MT9M111_RMB_MIRROR_ROWS (1 << 0)
65 #define MT9M111_CTXT_CTRL_RESTART (1 << 15)
66 #define MT9M111_CTXT_CTRL_DEFECTCOR_B (1 << 12)
67 #define MT9M111_CTXT_CTRL_RESIZE_B (1 << 10)
68 #define MT9M111_CTXT_CTRL_CTRL2_B (1 << 9)
69 #define MT9M111_CTXT_CTRL_GAMMA_B (1 << 8)
70 #define MT9M111_CTXT_CTRL_XENON_EN (1 << 7)
71 #define MT9M111_CTXT_CTRL_READ_MODE_B (1 << 3)
72 #define MT9M111_CTXT_CTRL_LED_FLASH_EN (1 << 2)
73 #define MT9M111_CTXT_CTRL_VBLANK_SEL_B (1 << 1)
74 #define MT9M111_CTXT_CTRL_HBLANK_SEL_B (1 << 0)
75 /*
76 * mt9m111: Colorpipe register addresses (0x100..0x1ff)
77 */
78 #define MT9M111_OPER_MODE_CTRL 0x106
79 #define MT9M111_OUTPUT_FORMAT_CTRL 0x108
80 #define MT9M111_REDUCER_XZOOM_B 0x1a0
81 #define MT9M111_REDUCER_XSIZE_B 0x1a1
82 #define MT9M111_REDUCER_YZOOM_B 0x1a3
83 #define MT9M111_REDUCER_YSIZE_B 0x1a4
84 #define MT9M111_REDUCER_XZOOM_A 0x1a6
85 #define MT9M111_REDUCER_XSIZE_A 0x1a7
86 #define MT9M111_REDUCER_YZOOM_A 0x1a9
87 #define MT9M111_REDUCER_YSIZE_A 0x1aa
88
89 #define MT9M111_OUTPUT_FORMAT_CTRL2_A 0x13a
90 #define MT9M111_OUTPUT_FORMAT_CTRL2_B 0x19b
91
92 #define MT9M111_OPMODE_AUTOEXPO_EN (1 << 14)
93 #define MT9M111_OPMODE_AUTOWHITEBAL_EN (1 << 1)
94
95 #define MT9M111_OUTFMT_PROCESSED_BAYER (1 << 14)
96 #define MT9M111_OUTFMT_BYPASS_IFP (1 << 10)
97 #define MT9M111_OUTFMT_INV_PIX_CLOCK (1 << 9)
98 #define MT9M111_OUTFMT_RGB (1 << 8)
99 #define MT9M111_OUTFMT_RGB565 (0x0 << 6)
100 #define MT9M111_OUTFMT_RGB555 (0x1 << 6)
101 #define MT9M111_OUTFMT_RGB444x (0x2 << 6)
102 #define MT9M111_OUTFMT_RGBx444 (0x3 << 6)
103 #define MT9M111_OUTFMT_TST_RAMP_OFF (0x0 << 4)
104 #define MT9M111_OUTFMT_TST_RAMP_COL (0x1 << 4)
105 #define MT9M111_OUTFMT_TST_RAMP_ROW (0x2 << 4)
106 #define MT9M111_OUTFMT_TST_RAMP_FRAME (0x3 << 4)
107 #define MT9M111_OUTFMT_SHIFT_3_UP (1 << 3)
108 #define MT9M111_OUTFMT_AVG_CHROMA (1 << 2)
109 #define MT9M111_OUTFMT_SWAP_YCbCr_C_Y (1 << 1)
110 #define MT9M111_OUTFMT_SWAP_RGB_EVEN (1 << 1)
111 #define MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr (1 << 0)
112 /*
113 * mt9m111: Camera control register addresses (0x200..0x2ff not implemented)
114 */
115
116 #define reg_read(reg) mt9m111_reg_read(client, MT9M111_##reg)
117 #define reg_write(reg, val) mt9m111_reg_write(client, MT9M111_##reg, (val))
118 #define reg_set(reg, val) mt9m111_reg_set(client, MT9M111_##reg, (val))
119 #define reg_clear(reg, val) mt9m111_reg_clear(client, MT9M111_##reg, (val))
120
121 #define MT9M111_MIN_DARK_ROWS 8
122 #define MT9M111_MIN_DARK_COLS 24
123 #define MT9M111_MAX_HEIGHT 1024
124 #define MT9M111_MAX_WIDTH 1280
125
126 /* MT9M111 has only one fixed colorspace per pixelcode */
127 struct mt9m111_datafmt {
128 enum v4l2_mbus_pixelcode code;
129 enum v4l2_colorspace colorspace;
130 };
131
132 /* Find a data format by a pixel code in an array */
133 static const struct mt9m111_datafmt *mt9m111_find_datafmt(
134 enum v4l2_mbus_pixelcode code, const struct mt9m111_datafmt *fmt,
135 int n)
136 {
137 int i;
138 for (i = 0; i < n; i++)
139 if (fmt[i].code == code)
140 return fmt + i;
141
142 return NULL;
143 }
144
145 static const struct mt9m111_datafmt mt9m111_colour_fmts[] = {
146 {V4L2_MBUS_FMT_YUYV8_2X8_LE, V4L2_COLORSPACE_JPEG},
147 {V4L2_MBUS_FMT_YVYU8_2X8_LE, V4L2_COLORSPACE_JPEG},
148 {V4L2_MBUS_FMT_YUYV8_2X8_BE, V4L2_COLORSPACE_JPEG},
149 {V4L2_MBUS_FMT_YVYU8_2X8_BE, V4L2_COLORSPACE_JPEG},
150 {V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
151 {V4L2_MBUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},
152 {V4L2_MBUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB},
153 {V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},
154 };
155
156 enum mt9m111_context {
157 HIGHPOWER = 0,
158 LOWPOWER,
159 };
160
161 struct mt9m111 {
162 struct v4l2_subdev subdev;
163 int model; /* V4L2_IDENT_MT9M11x* codes from v4l2-chip-ident.h */
164 enum mt9m111_context context;
165 struct v4l2_rect rect;
166 const struct mt9m111_datafmt *fmt;
167 unsigned int gain;
168 unsigned char autoexposure;
169 unsigned char datawidth;
170 unsigned int powered:1;
171 unsigned int hflip:1;
172 unsigned int vflip:1;
173 unsigned int swap_rgb_even_odd:1;
174 unsigned int swap_rgb_red_blue:1;
175 unsigned int swap_yuv_y_chromas:1;
176 unsigned int swap_yuv_cb_cr:1;
177 unsigned int autowhitebalance:1;
178 };
179
180 static struct mt9m111 *to_mt9m111(const struct i2c_client *client)
181 {
182 return container_of(i2c_get_clientdata(client), struct mt9m111, subdev);
183 }
184
185 static int reg_page_map_set(struct i2c_client *client, const u16 reg)
186 {
187 int ret;
188 u16 page;
189 static int lastpage = -1; /* PageMap cache value */
190
191 page = (reg >> 8);
192 if (page == lastpage)
193 return 0;
194 if (page > 2)
195 return -EINVAL;
196
197 ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
198 if (!ret)
199 lastpage = page;
200 return ret;
201 }
202
203 static int mt9m111_reg_read(struct i2c_client *client, const u16 reg)
204 {
205 int ret;
206
207 ret = reg_page_map_set(client, reg);
208 if (!ret)
209 ret = swab16(i2c_smbus_read_word_data(client, reg & 0xff));
210
211 dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret);
212 return ret;
213 }
214
215 static int mt9m111_reg_write(struct i2c_client *client, const u16 reg,
216 const u16 data)
217 {
218 int ret;
219
220 ret = reg_page_map_set(client, reg);
221 if (!ret)
222 ret = i2c_smbus_write_word_data(client, reg & 0xff,
223 swab16(data));
224 dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
225 return ret;
226 }
227
228 static int mt9m111_reg_set(struct i2c_client *client, const u16 reg,
229 const u16 data)
230 {
231 int ret;
232
233 ret = mt9m111_reg_read(client, reg);
234 if (ret >= 0)
235 ret = mt9m111_reg_write(client, reg, ret | data);
236 return ret;
237 }
238
239 static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg,
240 const u16 data)
241 {
242 int ret;
243
244 ret = mt9m111_reg_read(client, reg);
245 return mt9m111_reg_write(client, reg, ret & ~data);
246 }
247
248 static int mt9m111_set_context(struct i2c_client *client,
249 enum mt9m111_context ctxt)
250 {
251 int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
252 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
253 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
254 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
255 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
256 int valA = MT9M111_CTXT_CTRL_RESTART;
257
258 if (ctxt == HIGHPOWER)
259 return reg_write(CONTEXT_CONTROL, valB);
260 else
261 return reg_write(CONTEXT_CONTROL, valA);
262 }
263
264 static int mt9m111_setup_rect(struct i2c_client *client,
265 struct v4l2_rect *rect)
266 {
267 struct mt9m111 *mt9m111 = to_mt9m111(client);
268 int ret, is_raw_format;
269 int width = rect->width;
270 int height = rect->height;
271
272 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
273 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE)
274 is_raw_format = 1;
275 else
276 is_raw_format = 0;
277
278 ret = reg_write(COLUMN_START, rect->left);
279 if (!ret)
280 ret = reg_write(ROW_START, rect->top);
281
282 if (is_raw_format) {
283 if (!ret)
284 ret = reg_write(WINDOW_WIDTH, width);
285 if (!ret)
286 ret = reg_write(WINDOW_HEIGHT, height);
287 } else {
288 if (!ret)
289 ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
290 if (!ret)
291 ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
292 if (!ret)
293 ret = reg_write(REDUCER_XSIZE_B, width);
294 if (!ret)
295 ret = reg_write(REDUCER_YSIZE_B, height);
296 if (!ret)
297 ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
298 if (!ret)
299 ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
300 if (!ret)
301 ret = reg_write(REDUCER_XSIZE_A, width);
302 if (!ret)
303 ret = reg_write(REDUCER_YSIZE_A, height);
304 }
305
306 return ret;
307 }
308
309 static int mt9m111_setup_pixfmt(struct i2c_client *client, u16 outfmt)
310 {
311 int ret;
312
313 ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
314 if (!ret)
315 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
316 return ret;
317 }
318
319 static int mt9m111_setfmt_bayer8(struct i2c_client *client)
320 {
321 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_PROCESSED_BAYER |
322 MT9M111_OUTFMT_RGB);
323 }
324
325 static int mt9m111_setfmt_bayer10(struct i2c_client *client)
326 {
327 return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_BYPASS_IFP);
328 }
329
330 static int mt9m111_setfmt_rgb565(struct i2c_client *client)
331 {
332 struct mt9m111 *mt9m111 = to_mt9m111(client);
333 int val = 0;
334
335 if (mt9m111->swap_rgb_red_blue)
336 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
337 if (mt9m111->swap_rgb_even_odd)
338 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
339 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
340
341 return mt9m111_setup_pixfmt(client, val);
342 }
343
344 static int mt9m111_setfmt_rgb555(struct i2c_client *client)
345 {
346 struct mt9m111 *mt9m111 = to_mt9m111(client);
347 int val = 0;
348
349 if (mt9m111->swap_rgb_red_blue)
350 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
351 if (mt9m111->swap_rgb_even_odd)
352 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
353 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
354
355 return mt9m111_setup_pixfmt(client, val);
356 }
357
358 static int mt9m111_setfmt_yuv(struct i2c_client *client)
359 {
360 struct mt9m111 *mt9m111 = to_mt9m111(client);
361 int val = 0;
362
363 if (mt9m111->swap_yuv_cb_cr)
364 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
365 if (mt9m111->swap_yuv_y_chromas)
366 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
367
368 return mt9m111_setup_pixfmt(client, val);
369 }
370
371 static int mt9m111_enable(struct i2c_client *client)
372 {
373 struct mt9m111 *mt9m111 = to_mt9m111(client);
374 int ret;
375
376 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
377 if (!ret)
378 mt9m111->powered = 1;
379 return ret;
380 }
381
382 static int mt9m111_reset(struct i2c_client *client)
383 {
384 int ret;
385
386 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
387 if (!ret)
388 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
389 if (!ret)
390 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
391 | MT9M111_RESET_RESET_SOC);
392
393 return ret;
394 }
395
396 static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
397 {
398 struct soc_camera_link *icl = to_soc_camera_link(icd);
399 unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
400 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
401 SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8;
402
403 return soc_camera_apply_sensor_flags(icl, flags);
404 }
405
406 static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
407 {
408 return 0;
409 }
410
411 static int mt9m111_make_rect(struct i2c_client *client,
412 struct v4l2_rect *rect)
413 {
414 struct mt9m111 *mt9m111 = to_mt9m111(client);
415
416 if (mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
417 mt9m111->fmt->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE) {
418 /* Bayer format - even size lengths */
419 rect->width = ALIGN(rect->width, 2);
420 rect->height = ALIGN(rect->height, 2);
421 /* Let the user play with the starting pixel */
422 }
423
424 /* FIXME: the datasheet doesn't specify minimum sizes */
425 soc_camera_limit_side(&rect->left, &rect->width,
426 MT9M111_MIN_DARK_COLS, 2, MT9M111_MAX_WIDTH);
427
428 soc_camera_limit_side(&rect->top, &rect->height,
429 MT9M111_MIN_DARK_ROWS, 2, MT9M111_MAX_HEIGHT);
430
431 return mt9m111_setup_rect(client, rect);
432 }
433
434 static int mt9m111_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
435 {
436 struct v4l2_rect rect = a->c;
437 struct i2c_client *client = sd->priv;
438 struct mt9m111 *mt9m111 = to_mt9m111(client);
439 int ret;
440
441 dev_dbg(&client->dev, "%s left=%d, top=%d, width=%d, height=%d\n",
442 __func__, rect.left, rect.top, rect.width, rect.height);
443
444 ret = mt9m111_make_rect(client, &rect);
445 if (!ret)
446 mt9m111->rect = rect;
447 return ret;
448 }
449
450 static int mt9m111_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a)
451 {
452 struct i2c_client *client = sd->priv;
453 struct mt9m111 *mt9m111 = to_mt9m111(client);
454
455 a->c = mt9m111->rect;
456 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
457
458 return 0;
459 }
460
461 static int mt9m111_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a)
462 {
463 a->bounds.left = MT9M111_MIN_DARK_COLS;
464 a->bounds.top = MT9M111_MIN_DARK_ROWS;
465 a->bounds.width = MT9M111_MAX_WIDTH;
466 a->bounds.height = MT9M111_MAX_HEIGHT;
467 a->defrect = a->bounds;
468 a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
469 a->pixelaspect.numerator = 1;
470 a->pixelaspect.denominator = 1;
471
472 return 0;
473 }
474
475 static int mt9m111_g_fmt(struct v4l2_subdev *sd,
476 struct v4l2_mbus_framefmt *mf)
477 {
478 struct i2c_client *client = sd->priv;
479 struct mt9m111 *mt9m111 = to_mt9m111(client);
480
481 mf->width = mt9m111->rect.width;
482 mf->height = mt9m111->rect.height;
483 mf->code = mt9m111->fmt->code;
484 mf->field = V4L2_FIELD_NONE;
485
486 return 0;
487 }
488
489 static int mt9m111_set_pixfmt(struct i2c_client *client,
490 enum v4l2_mbus_pixelcode code)
491 {
492 struct mt9m111 *mt9m111 = to_mt9m111(client);
493 int ret;
494
495 switch (code) {
496 case V4L2_MBUS_FMT_SBGGR8_1X8:
497 ret = mt9m111_setfmt_bayer8(client);
498 break;
499 case V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE:
500 ret = mt9m111_setfmt_bayer10(client);
501 break;
502 case V4L2_MBUS_FMT_RGB555_2X8_PADHI_LE:
503 ret = mt9m111_setfmt_rgb555(client);
504 break;
505 case V4L2_MBUS_FMT_RGB565_2X8_LE:
506 ret = mt9m111_setfmt_rgb565(client);
507 break;
508 case V4L2_MBUS_FMT_YUYV8_2X8_BE:
509 mt9m111->swap_yuv_y_chromas = 0;
510 mt9m111->swap_yuv_cb_cr = 0;
511 ret = mt9m111_setfmt_yuv(client);
512 break;
513 case V4L2_MBUS_FMT_YVYU8_2X8_BE:
514 mt9m111->swap_yuv_y_chromas = 0;
515 mt9m111->swap_yuv_cb_cr = 1;
516 ret = mt9m111_setfmt_yuv(client);
517 break;
518 case V4L2_MBUS_FMT_YUYV8_2X8_LE:
519 mt9m111->swap_yuv_y_chromas = 1;
520 mt9m111->swap_yuv_cb_cr = 0;
521 ret = mt9m111_setfmt_yuv(client);
522 break;
523 case V4L2_MBUS_FMT_YVYU8_2X8_LE:
524 mt9m111->swap_yuv_y_chromas = 1;
525 mt9m111->swap_yuv_cb_cr = 1;
526 ret = mt9m111_setfmt_yuv(client);
527 break;
528 default:
529 dev_err(&client->dev, "Pixel format not handled : %x\n",
530 code);
531 ret = -EINVAL;
532 }
533
534 return ret;
535 }
536
537 static int mt9m111_s_fmt(struct v4l2_subdev *sd,
538 struct v4l2_mbus_framefmt *mf)
539 {
540 struct i2c_client *client = sd->priv;
541 const struct mt9m111_datafmt *fmt;
542 struct mt9m111 *mt9m111 = to_mt9m111(client);
543 struct v4l2_rect rect = {
544 .left = mt9m111->rect.left,
545 .top = mt9m111->rect.top,
546 .width = mf->width,
547 .height = mf->height,
548 };
549 int ret;
550
551 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
552 ARRAY_SIZE(mt9m111_colour_fmts));
553 if (!fmt)
554 return -EINVAL;
555
556 dev_dbg(&client->dev,
557 "%s code=%x left=%d, top=%d, width=%d, height=%d\n", __func__,
558 mf->code, rect.left, rect.top, rect.width, rect.height);
559
560 ret = mt9m111_make_rect(client, &rect);
561 if (!ret)
562 ret = mt9m111_set_pixfmt(client, mf->code);
563 if (!ret) {
564 mt9m111->rect = rect;
565 mt9m111->fmt = fmt;
566 mf->colorspace = fmt->colorspace;
567 }
568
569 return ret;
570 }
571
572 static int mt9m111_try_fmt(struct v4l2_subdev *sd,
573 struct v4l2_mbus_framefmt *mf)
574 {
575 struct i2c_client *client = sd->priv;
576 struct mt9m111 *mt9m111 = to_mt9m111(client);
577 const struct mt9m111_datafmt *fmt;
578 bool bayer = mf->code == V4L2_MBUS_FMT_SBGGR8_1X8 ||
579 mf->code == V4L2_MBUS_FMT_SBGGR10_2X8_PADHI_LE;
580
581 fmt = mt9m111_find_datafmt(mf->code, mt9m111_colour_fmts,
582 ARRAY_SIZE(mt9m111_colour_fmts));
583 if (!fmt) {
584 fmt = mt9m111->fmt;
585 mf->code = fmt->code;
586 }
587
588 /*
589 * With Bayer format enforce even side lengths, but let the user play
590 * with the starting pixel
591 */
592
593 if (mf->height > MT9M111_MAX_HEIGHT)
594 mf->height = MT9M111_MAX_HEIGHT;
595 else if (mf->height < 2)
596 mf->height = 2;
597 else if (bayer)
598 mf->height = ALIGN(mf->height, 2);
599
600 if (mf->width > MT9M111_MAX_WIDTH)
601 mf->width = MT9M111_MAX_WIDTH;
602 else if (mf->width < 2)
603 mf->width = 2;
604 else if (bayer)
605 mf->width = ALIGN(mf->width, 2);
606
607 mf->colorspace = fmt->colorspace;
608
609 return 0;
610 }
611
612 static int mt9m111_g_chip_ident(struct v4l2_subdev *sd,
613 struct v4l2_dbg_chip_ident *id)
614 {
615 struct i2c_client *client = sd->priv;
616 struct mt9m111 *mt9m111 = to_mt9m111(client);
617
618 if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR)
619 return -EINVAL;
620
621 if (id->match.addr != client->addr)
622 return -ENODEV;
623
624 id->ident = mt9m111->model;
625 id->revision = 0;
626
627 return 0;
628 }
629
630 #ifdef CONFIG_VIDEO_ADV_DEBUG
631 static int mt9m111_g_register(struct v4l2_subdev *sd,
632 struct v4l2_dbg_register *reg)
633 {
634 struct i2c_client *client = sd->priv;
635 int val;
636
637 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
638 return -EINVAL;
639 if (reg->match.addr != client->addr)
640 return -ENODEV;
641
642 val = mt9m111_reg_read(client, reg->reg);
643 reg->size = 2;
644 reg->val = (u64)val;
645
646 if (reg->val > 0xffff)
647 return -EIO;
648
649 return 0;
650 }
651
652 static int mt9m111_s_register(struct v4l2_subdev *sd,
653 struct v4l2_dbg_register *reg)
654 {
655 struct i2c_client *client = sd->priv;
656
657 if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
658 return -EINVAL;
659
660 if (reg->match.addr != client->addr)
661 return -ENODEV;
662
663 if (mt9m111_reg_write(client, reg->reg, reg->val) < 0)
664 return -EIO;
665
666 return 0;
667 }
668 #endif
669
670 static const struct v4l2_queryctrl mt9m111_controls[] = {
671 {
672 .id = V4L2_CID_VFLIP,
673 .type = V4L2_CTRL_TYPE_BOOLEAN,
674 .name = "Flip Verticaly",
675 .minimum = 0,
676 .maximum = 1,
677 .step = 1,
678 .default_value = 0,
679 }, {
680 .id = V4L2_CID_HFLIP,
681 .type = V4L2_CTRL_TYPE_BOOLEAN,
682 .name = "Flip Horizontaly",
683 .minimum = 0,
684 .maximum = 1,
685 .step = 1,
686 .default_value = 0,
687 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
688 .id = V4L2_CID_GAIN,
689 .type = V4L2_CTRL_TYPE_INTEGER,
690 .name = "Gain",
691 .minimum = 0,
692 .maximum = 63 * 2 * 2,
693 .step = 1,
694 .default_value = 32,
695 .flags = V4L2_CTRL_FLAG_SLIDER,
696 }, {
697 .id = V4L2_CID_EXPOSURE_AUTO,
698 .type = V4L2_CTRL_TYPE_BOOLEAN,
699 .name = "Auto Exposure",
700 .minimum = 0,
701 .maximum = 1,
702 .step = 1,
703 .default_value = 1,
704 }
705 };
706
707 static int mt9m111_resume(struct soc_camera_device *icd);
708 static int mt9m111_suspend(struct soc_camera_device *icd, pm_message_t state);
709
710 static struct soc_camera_ops mt9m111_ops = {
711 .suspend = mt9m111_suspend,
712 .resume = mt9m111_resume,
713 .query_bus_param = mt9m111_query_bus_param,
714 .set_bus_param = mt9m111_set_bus_param,
715 .controls = mt9m111_controls,
716 .num_controls = ARRAY_SIZE(mt9m111_controls),
717 };
718
719 static int mt9m111_set_flip(struct i2c_client *client, int flip, int mask)
720 {
721 struct mt9m111 *mt9m111 = to_mt9m111(client);
722 int ret;
723
724 if (mt9m111->context == HIGHPOWER) {
725 if (flip)
726 ret = reg_set(READ_MODE_B, mask);
727 else
728 ret = reg_clear(READ_MODE_B, mask);
729 } else {
730 if (flip)
731 ret = reg_set(READ_MODE_A, mask);
732 else
733 ret = reg_clear(READ_MODE_A, mask);
734 }
735
736 return ret;
737 }
738
739 static int mt9m111_get_global_gain(struct i2c_client *client)
740 {
741 int data;
742
743 data = reg_read(GLOBAL_GAIN);
744 if (data >= 0)
745 return (data & 0x2f) * (1 << ((data >> 10) & 1)) *
746 (1 << ((data >> 9) & 1));
747 return data;
748 }
749
750 static int mt9m111_set_global_gain(struct i2c_client *client, int gain)
751 {
752 struct mt9m111 *mt9m111 = to_mt9m111(client);
753 u16 val;
754
755 if (gain > 63 * 2 * 2)
756 return -EINVAL;
757
758 mt9m111->gain = gain;
759 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
760 val = (1 << 10) | (1 << 9) | (gain / 4);
761 else if ((gain >= 64) && (gain < 64 * 2))
762 val = (1 << 9) | (gain / 2);
763 else
764 val = gain;
765
766 return reg_write(GLOBAL_GAIN, val);
767 }
768
769 static int mt9m111_set_autoexposure(struct i2c_client *client, int on)
770 {
771 struct mt9m111 *mt9m111 = to_mt9m111(client);
772 int ret;
773
774 if (on)
775 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
776 else
777 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
778
779 if (!ret)
780 mt9m111->autoexposure = on;
781
782 return ret;
783 }
784
785 static int mt9m111_set_autowhitebalance(struct i2c_client *client, int on)
786 {
787 struct mt9m111 *mt9m111 = to_mt9m111(client);
788 int ret;
789
790 if (on)
791 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
792 else
793 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN);
794
795 if (!ret)
796 mt9m111->autowhitebalance = on;
797
798 return ret;
799 }
800
801 static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
802 {
803 struct i2c_client *client = sd->priv;
804 struct mt9m111 *mt9m111 = to_mt9m111(client);
805 int data;
806
807 switch (ctrl->id) {
808 case V4L2_CID_VFLIP:
809 if (mt9m111->context == HIGHPOWER)
810 data = reg_read(READ_MODE_B);
811 else
812 data = reg_read(READ_MODE_A);
813
814 if (data < 0)
815 return -EIO;
816 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
817 break;
818 case V4L2_CID_HFLIP:
819 if (mt9m111->context == HIGHPOWER)
820 data = reg_read(READ_MODE_B);
821 else
822 data = reg_read(READ_MODE_A);
823
824 if (data < 0)
825 return -EIO;
826 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
827 break;
828 case V4L2_CID_GAIN:
829 data = mt9m111_get_global_gain(client);
830 if (data < 0)
831 return data;
832 ctrl->value = data;
833 break;
834 case V4L2_CID_EXPOSURE_AUTO:
835 ctrl->value = mt9m111->autoexposure;
836 break;
837 case V4L2_CID_AUTO_WHITE_BALANCE:
838 ctrl->value = mt9m111->autowhitebalance;
839 break;
840 }
841 return 0;
842 }
843
844 static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl)
845 {
846 struct i2c_client *client = sd->priv;
847 struct mt9m111 *mt9m111 = to_mt9m111(client);
848 const struct v4l2_queryctrl *qctrl;
849 int ret;
850
851 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
852 if (!qctrl)
853 return -EINVAL;
854
855 switch (ctrl->id) {
856 case V4L2_CID_VFLIP:
857 mt9m111->vflip = ctrl->value;
858 ret = mt9m111_set_flip(client, ctrl->value,
859 MT9M111_RMB_MIRROR_ROWS);
860 break;
861 case V4L2_CID_HFLIP:
862 mt9m111->hflip = ctrl->value;
863 ret = mt9m111_set_flip(client, ctrl->value,
864 MT9M111_RMB_MIRROR_COLS);
865 break;
866 case V4L2_CID_GAIN:
867 ret = mt9m111_set_global_gain(client, ctrl->value);
868 break;
869 case V4L2_CID_EXPOSURE_AUTO:
870 ret = mt9m111_set_autoexposure(client, ctrl->value);
871 break;
872 case V4L2_CID_AUTO_WHITE_BALANCE:
873 ret = mt9m111_set_autowhitebalance(client, ctrl->value);
874 break;
875 default:
876 ret = -EINVAL;
877 }
878
879 return ret;
880 }
881
882 static int mt9m111_suspend(struct soc_camera_device *icd, pm_message_t state)
883 {
884 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
885 struct mt9m111 *mt9m111 = to_mt9m111(client);
886
887 mt9m111->gain = mt9m111_get_global_gain(client);
888
889 return 0;
890 }
891
892 static int mt9m111_restore_state(struct i2c_client *client)
893 {
894 struct mt9m111 *mt9m111 = to_mt9m111(client);
895
896 mt9m111_set_context(client, mt9m111->context);
897 mt9m111_set_pixfmt(client, mt9m111->fmt->code);
898 mt9m111_setup_rect(client, &mt9m111->rect);
899 mt9m111_set_flip(client, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
900 mt9m111_set_flip(client, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
901 mt9m111_set_global_gain(client, mt9m111->gain);
902 mt9m111_set_autoexposure(client, mt9m111->autoexposure);
903 mt9m111_set_autowhitebalance(client, mt9m111->autowhitebalance);
904 return 0;
905 }
906
907 static int mt9m111_resume(struct soc_camera_device *icd)
908 {
909 struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd));
910 struct mt9m111 *mt9m111 = to_mt9m111(client);
911 int ret = 0;
912
913 if (mt9m111->powered) {
914 ret = mt9m111_enable(client);
915 if (!ret)
916 ret = mt9m111_reset(client);
917 if (!ret)
918 ret = mt9m111_restore_state(client);
919 }
920 return ret;
921 }
922
923 static int mt9m111_init(struct i2c_client *client)
924 {
925 struct mt9m111 *mt9m111 = to_mt9m111(client);
926 int ret;
927
928 mt9m111->context = HIGHPOWER;
929 ret = mt9m111_enable(client);
930 if (!ret)
931 ret = mt9m111_reset(client);
932 if (!ret)
933 ret = mt9m111_set_context(client, mt9m111->context);
934 if (!ret)
935 ret = mt9m111_set_autoexposure(client, mt9m111->autoexposure);
936 if (ret)
937 dev_err(&client->dev, "mt9m11x init failed: %d\n", ret);
938 return ret;
939 }
940
941 /*
942 * Interface active, can use i2c. If it fails, it can indeed mean, that
943 * this wasn't our capture interface, so, we wait for the right one
944 */
945 static int mt9m111_video_probe(struct soc_camera_device *icd,
946 struct i2c_client *client)
947 {
948 struct mt9m111 *mt9m111 = to_mt9m111(client);
949 s32 data;
950 int ret;
951
952 /*
953 * We must have a parent by now. And it cannot be a wrong one.
954 * So this entire test is completely redundant.
955 */
956 if (!icd->dev.parent ||
957 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
958 return -ENODEV;
959
960 mt9m111->autoexposure = 1;
961 mt9m111->autowhitebalance = 1;
962
963 mt9m111->swap_rgb_even_odd = 1;
964 mt9m111->swap_rgb_red_blue = 1;
965
966 ret = mt9m111_init(client);
967 if (ret)
968 goto ei2c;
969
970 data = reg_read(CHIP_VERSION);
971
972 switch (data) {
973 case 0x143a: /* MT9M111 */
974 mt9m111->model = V4L2_IDENT_MT9M111;
975 break;
976 case 0x148c: /* MT9M112 */
977 mt9m111->model = V4L2_IDENT_MT9M112;
978 break;
979 default:
980 ret = -ENODEV;
981 dev_err(&client->dev,
982 "No MT9M11x chip detected, register read %x\n", data);
983 goto ei2c;
984 }
985
986 dev_info(&client->dev, "Detected a MT9M11x chip ID %x\n", data);
987
988 ei2c:
989 return ret;
990 }
991
992 static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = {
993 .g_ctrl = mt9m111_g_ctrl,
994 .s_ctrl = mt9m111_s_ctrl,
995 .g_chip_ident = mt9m111_g_chip_ident,
996 #ifdef CONFIG_VIDEO_ADV_DEBUG
997 .g_register = mt9m111_g_register,
998 .s_register = mt9m111_s_register,
999 #endif
1000 };
1001
1002 static int mt9m111_enum_fmt(struct v4l2_subdev *sd, int index,
1003 enum v4l2_mbus_pixelcode *code)
1004 {
1005 if ((unsigned int)index >= ARRAY_SIZE(mt9m111_colour_fmts))
1006 return -EINVAL;
1007
1008 *code = mt9m111_colour_fmts[index].code;
1009 return 0;
1010 }
1011
1012 static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = {
1013 .s_mbus_fmt = mt9m111_s_fmt,
1014 .g_mbus_fmt = mt9m111_g_fmt,
1015 .try_mbus_fmt = mt9m111_try_fmt,
1016 .s_crop = mt9m111_s_crop,
1017 .g_crop = mt9m111_g_crop,
1018 .cropcap = mt9m111_cropcap,
1019 .enum_mbus_fmt = mt9m111_enum_fmt,
1020 };
1021
1022 static struct v4l2_subdev_ops mt9m111_subdev_ops = {
1023 .core = &mt9m111_subdev_core_ops,
1024 .video = &mt9m111_subdev_video_ops,
1025 };
1026
1027 static int mt9m111_probe(struct i2c_client *client,
1028 const struct i2c_device_id *did)
1029 {
1030 struct mt9m111 *mt9m111;
1031 struct soc_camera_device *icd = client->dev.platform_data;
1032 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
1033 struct soc_camera_link *icl;
1034 int ret;
1035
1036 if (!icd) {
1037 dev_err(&client->dev, "MT9M11x: missing soc-camera data!\n");
1038 return -EINVAL;
1039 }
1040
1041 icl = to_soc_camera_link(icd);
1042 if (!icl) {
1043 dev_err(&client->dev, "MT9M11x driver needs platform data\n");
1044 return -EINVAL;
1045 }
1046
1047 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
1048 dev_warn(&adapter->dev,
1049 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
1050 return -EIO;
1051 }
1052
1053 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
1054 if (!mt9m111)
1055 return -ENOMEM;
1056
1057 v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops);
1058
1059 /* Second stage probe - when a capture adapter is there */
1060 icd->ops = &mt9m111_ops;
1061
1062 mt9m111->rect.left = MT9M111_MIN_DARK_COLS;
1063 mt9m111->rect.top = MT9M111_MIN_DARK_ROWS;
1064 mt9m111->rect.width = MT9M111_MAX_WIDTH;
1065 mt9m111->rect.height = MT9M111_MAX_HEIGHT;
1066 mt9m111->fmt = &mt9m111_colour_fmts[0];
1067
1068 ret = mt9m111_video_probe(icd, client);
1069 if (ret) {
1070 icd->ops = NULL;
1071 i2c_set_clientdata(client, NULL);
1072 kfree(mt9m111);
1073 }
1074
1075 return ret;
1076 }
1077
1078 static int mt9m111_remove(struct i2c_client *client)
1079 {
1080 struct mt9m111 *mt9m111 = to_mt9m111(client);
1081 struct soc_camera_device *icd = client->dev.platform_data;
1082
1083 icd->ops = NULL;
1084 i2c_set_clientdata(client, NULL);
1085 client->driver = NULL;
1086 kfree(mt9m111);
1087
1088 return 0;
1089 }
1090
1091 static const struct i2c_device_id mt9m111_id[] = {
1092 { "mt9m111", 0 },
1093 { }
1094 };
1095 MODULE_DEVICE_TABLE(i2c, mt9m111_id);
1096
1097 static struct i2c_driver mt9m111_i2c_driver = {
1098 .driver = {
1099 .name = "mt9m111",
1100 },
1101 .probe = mt9m111_probe,
1102 .remove = mt9m111_remove,
1103 .id_table = mt9m111_id,
1104 };
1105
1106 static int __init mt9m111_mod_init(void)
1107 {
1108 return i2c_add_driver(&mt9m111_i2c_driver);
1109 }
1110
1111 static void __exit mt9m111_mod_exit(void)
1112 {
1113 i2c_del_driver(&mt9m111_i2c_driver);
1114 }
1115
1116 module_init(mt9m111_mod_init);
1117 module_exit(mt9m111_mod_exit);
1118
1119 MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver");
1120 MODULE_AUTHOR("Robert Jarzmik");
1121 MODULE_LICENSE("GPL");