aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/media/video/mt9m111.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/media/video/mt9m111.c')
-rw-r--r--drivers/media/video/mt9m111.c973
1 files changed, 973 insertions, 0 deletions
diff --git a/drivers/media/video/mt9m111.c b/drivers/media/video/mt9m111.c
new file mode 100644
index 000000000000..da0b2d553fd0
--- /dev/null
+++ b/drivers/media/video/mt9m111.c
@@ -0,0 +1,973 @@
1/*
2 * Driver for MT9M111 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 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
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(icd, MT9M111_##reg)
117#define reg_write(reg, val) mt9m111_reg_write(icd, MT9M111_##reg, (val))
118#define reg_set(reg, val) mt9m111_reg_set(icd, MT9M111_##reg, (val))
119#define reg_clear(reg, val) mt9m111_reg_clear(icd, 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#define COL_FMT(_name, _depth, _fourcc, _colorspace) \
127 { .name = _name, .depth = _depth, .fourcc = _fourcc, \
128 .colorspace = _colorspace }
129#define RGB_FMT(_name, _depth, _fourcc) \
130 COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_SRGB)
131
132static const struct soc_camera_data_format mt9m111_colour_formats[] = {
133 COL_FMT("YCrYCb 8 bit", 8, V4L2_PIX_FMT_YUYV, V4L2_COLORSPACE_JPEG),
134 RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565),
135 RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555),
136 RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16),
137 RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8),
138};
139
140enum mt9m111_context {
141 HIGHPOWER = 0,
142 LOWPOWER,
143};
144
145struct mt9m111 {
146 struct i2c_client *client;
147 struct soc_camera_device icd;
148 int model; /* V4L2_IDENT_MT9M111* codes from v4l2-chip-ident.h */
149 enum mt9m111_context context;
150 unsigned int left, top, width, height;
151 u32 pixfmt;
152 unsigned char autoexposure;
153 unsigned char datawidth;
154 unsigned int powered:1;
155 unsigned int hflip:1;
156 unsigned int vflip:1;
157 unsigned int swap_rgb_even_odd:1;
158 unsigned int swap_rgb_red_blue:1;
159 unsigned int swap_yuv_y_chromas:1;
160 unsigned int swap_yuv_cb_cr:1;
161};
162
163static int reg_page_map_set(struct i2c_client *client, const u16 reg)
164{
165 int ret;
166 u16 page;
167 static int lastpage = -1; /* PageMap cache value */
168
169 page = (reg >> 8);
170 if (page == lastpage)
171 return 0;
172 if (page > 2)
173 return -EINVAL;
174
175 ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page));
176 if (!ret)
177 lastpage = page;
178 return ret;
179}
180
181static int mt9m111_reg_read(struct soc_camera_device *icd, const u16 reg)
182{
183 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
184 struct i2c_client *client = mt9m111->client;
185 int ret;
186
187 ret = reg_page_map_set(client, reg);
188 if (!ret)
189 ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff)));
190
191 dev_dbg(&icd->dev, "read reg.%03x -> %04x\n", reg, ret);
192 return ret;
193}
194
195static int mt9m111_reg_write(struct soc_camera_device *icd, const u16 reg,
196 const u16 data)
197{
198 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
199 struct i2c_client *client = mt9m111->client;
200 int ret;
201
202 ret = reg_page_map_set(client, reg);
203 if (!ret)
204 ret = i2c_smbus_write_word_data(mt9m111->client, (reg & 0xff),
205 swab16(data));
206 dev_dbg(&icd->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret);
207 return ret;
208}
209
210static int mt9m111_reg_set(struct soc_camera_device *icd, const u16 reg,
211 const u16 data)
212{
213 int ret;
214
215 ret = mt9m111_reg_read(icd, reg);
216 if (ret >= 0)
217 ret = mt9m111_reg_write(icd, reg, ret | data);
218 return ret;
219}
220
221static int mt9m111_reg_clear(struct soc_camera_device *icd, const u16 reg,
222 const u16 data)
223{
224 int ret;
225
226 ret = mt9m111_reg_read(icd, reg);
227 return mt9m111_reg_write(icd, reg, ret & ~data);
228}
229
230static int mt9m111_set_context(struct soc_camera_device *icd,
231 enum mt9m111_context ctxt)
232{
233 int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B
234 | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B
235 | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B
236 | MT9M111_CTXT_CTRL_VBLANK_SEL_B
237 | MT9M111_CTXT_CTRL_HBLANK_SEL_B;
238 int valA = MT9M111_CTXT_CTRL_RESTART;
239
240 if (ctxt == HIGHPOWER)
241 return reg_write(CONTEXT_CONTROL, valB);
242 else
243 return reg_write(CONTEXT_CONTROL, valA);
244}
245
246static int mt9m111_setup_rect(struct soc_camera_device *icd)
247{
248 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
249 int ret, is_raw_format;
250 int width = mt9m111->width;
251 int height = mt9m111->height;
252
253 if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8)
254 || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16))
255 is_raw_format = 1;
256 else
257 is_raw_format = 0;
258
259 ret = reg_write(COLUMN_START, mt9m111->left);
260 if (!ret)
261 ret = reg_write(ROW_START, mt9m111->top);
262
263 if (is_raw_format) {
264 if (!ret)
265 ret = reg_write(WINDOW_WIDTH, width);
266 if (!ret)
267 ret = reg_write(WINDOW_HEIGHT, height);
268 } else {
269 if (!ret)
270 ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH);
271 if (!ret)
272 ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT);
273 if (!ret)
274 ret = reg_write(REDUCER_XSIZE_B, width);
275 if (!ret)
276 ret = reg_write(REDUCER_YSIZE_B, height);
277 if (!ret)
278 ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH);
279 if (!ret)
280 ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT);
281 if (!ret)
282 ret = reg_write(REDUCER_XSIZE_A, width);
283 if (!ret)
284 ret = reg_write(REDUCER_YSIZE_A, height);
285 }
286
287 return ret;
288}
289
290static int mt9m111_setup_pixfmt(struct soc_camera_device *icd, u16 outfmt)
291{
292 int ret;
293
294 ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt);
295 if (!ret)
296 ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt);
297 return ret;
298}
299
300static int mt9m111_setfmt_bayer8(struct soc_camera_device *icd)
301{
302 return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_PROCESSED_BAYER);
303}
304
305static int mt9m111_setfmt_bayer10(struct soc_camera_device *icd)
306{
307 return mt9m111_setup_pixfmt(icd, MT9M111_OUTFMT_BYPASS_IFP);
308}
309
310static int mt9m111_setfmt_rgb565(struct soc_camera_device *icd)
311{
312 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
313 int val = 0;
314
315 if (mt9m111->swap_rgb_red_blue)
316 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
317 if (mt9m111->swap_rgb_even_odd)
318 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
319 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565;
320
321 return mt9m111_setup_pixfmt(icd, val);
322}
323
324static int mt9m111_setfmt_rgb555(struct soc_camera_device *icd)
325{
326 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
327 int val = 0;
328
329 if (mt9m111->swap_rgb_red_blue)
330 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
331 if (mt9m111->swap_rgb_even_odd)
332 val |= MT9M111_OUTFMT_SWAP_RGB_EVEN;
333 val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555;
334
335 return mt9m111_setup_pixfmt(icd, val);
336}
337
338static int mt9m111_setfmt_yuv(struct soc_camera_device *icd)
339{
340 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
341 int val = 0;
342
343 if (mt9m111->swap_yuv_cb_cr)
344 val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr;
345 if (mt9m111->swap_yuv_y_chromas)
346 val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y;
347
348 return mt9m111_setup_pixfmt(icd, val);
349}
350
351static int mt9m111_enable(struct soc_camera_device *icd)
352{
353 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
354 struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
355 int ret;
356
357 if (icl->power) {
358 ret = icl->power(&mt9m111->client->dev, 1);
359 if (ret < 0) {
360 dev_err(icd->vdev->parent,
361 "Platform failed to power-on the camera.\n");
362 return ret;
363 }
364 }
365
366 ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE);
367 if (!ret)
368 mt9m111->powered = 1;
369 return ret;
370}
371
372static int mt9m111_disable(struct soc_camera_device *icd)
373{
374 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
375 struct soc_camera_link *icl = mt9m111->client->dev.platform_data;
376 int ret;
377
378 ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE);
379 if (!ret)
380 mt9m111->powered = 0;
381
382 if (icl->power)
383 icl->power(&mt9m111->client->dev, 0);
384
385 return ret;
386}
387
388static int mt9m111_reset(struct soc_camera_device *icd)
389{
390 int ret;
391
392 ret = reg_set(RESET, MT9M111_RESET_RESET_MODE);
393 if (!ret)
394 ret = reg_set(RESET, MT9M111_RESET_RESET_SOC);
395 if (!ret)
396 ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE
397 | MT9M111_RESET_RESET_SOC);
398 return ret;
399}
400
401static int mt9m111_start_capture(struct soc_camera_device *icd)
402{
403 return 0;
404}
405
406static int mt9m111_stop_capture(struct soc_camera_device *icd)
407{
408 return 0;
409}
410
411static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd)
412{
413 return SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING |
414 SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH |
415 SOCAM_DATAWIDTH_8;
416}
417
418static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f)
419{
420 return 0;
421}
422
423static int mt9m111_set_pixfmt(struct soc_camera_device *icd, u32 pixfmt)
424{
425 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
426 int ret;
427
428 switch (pixfmt) {
429 case V4L2_PIX_FMT_SBGGR8:
430 ret = mt9m111_setfmt_bayer8(icd);
431 break;
432 case V4L2_PIX_FMT_SBGGR16:
433 ret = mt9m111_setfmt_bayer10(icd);
434 break;
435 case V4L2_PIX_FMT_RGB555:
436 ret = mt9m111_setfmt_rgb555(icd);
437 break;
438 case V4L2_PIX_FMT_RGB565:
439 ret = mt9m111_setfmt_rgb565(icd);
440 break;
441 case V4L2_PIX_FMT_YUYV:
442 ret = mt9m111_setfmt_yuv(icd);
443 break;
444 default:
445 dev_err(&icd->dev, "Pixel format not handled : %x\n", pixfmt);
446 ret = -EINVAL;
447 }
448
449 if (!ret)
450 mt9m111->pixfmt = pixfmt;
451
452 return ret;
453}
454
455static int mt9m111_set_fmt_cap(struct soc_camera_device *icd,
456 __u32 pixfmt, struct v4l2_rect *rect)
457{
458 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
459 int ret;
460
461 mt9m111->left = rect->left;
462 mt9m111->top = rect->top;
463 mt9m111->width = rect->width;
464 mt9m111->height = rect->height;
465
466 dev_dbg(&icd->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n",
467 __func__, pixfmt, mt9m111->left, mt9m111->top, mt9m111->width,
468 mt9m111->height);
469
470 ret = mt9m111_setup_rect(icd);
471 if (!ret)
472 ret = mt9m111_set_pixfmt(icd, pixfmt);
473 return ret;
474}
475
476static int mt9m111_try_fmt_cap(struct soc_camera_device *icd,
477 struct v4l2_format *f)
478{
479 if (f->fmt.pix.height > MT9M111_MAX_HEIGHT)
480 f->fmt.pix.height = MT9M111_MAX_HEIGHT;
481 if (f->fmt.pix.width > MT9M111_MAX_WIDTH)
482 f->fmt.pix.width = MT9M111_MAX_WIDTH;
483
484 return 0;
485}
486
487static int mt9m111_get_chip_id(struct soc_camera_device *icd,
488 struct v4l2_chip_ident *id)
489{
490 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
491
492 if (id->match_type != V4L2_CHIP_MATCH_I2C_ADDR)
493 return -EINVAL;
494
495 if (id->match_chip != mt9m111->client->addr)
496 return -ENODEV;
497
498 id->ident = mt9m111->model;
499 id->revision = 0;
500
501 return 0;
502}
503
504#ifdef CONFIG_VIDEO_ADV_DEBUG
505static int mt9m111_get_register(struct soc_camera_device *icd,
506 struct v4l2_register *reg)
507{
508 int val;
509
510 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
511
512 if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
513 return -EINVAL;
514 if (reg->match_chip != mt9m111->client->addr)
515 return -ENODEV;
516
517 val = mt9m111_reg_read(icd, reg->reg);
518 reg->val = (u64)val;
519
520 if (reg->val > 0xffff)
521 return -EIO;
522
523 return 0;
524}
525
526static int mt9m111_set_register(struct soc_camera_device *icd,
527 struct v4l2_register *reg)
528{
529 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
530
531 if (reg->match_type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff)
532 return -EINVAL;
533
534 if (reg->match_chip != mt9m111->client->addr)
535 return -ENODEV;
536
537 if (mt9m111_reg_write(icd, reg->reg, reg->val) < 0)
538 return -EIO;
539
540 return 0;
541}
542#endif
543
544static const struct v4l2_queryctrl mt9m111_controls[] = {
545 {
546 .id = V4L2_CID_VFLIP,
547 .type = V4L2_CTRL_TYPE_BOOLEAN,
548 .name = "Flip Verticaly",
549 .minimum = 0,
550 .maximum = 1,
551 .step = 1,
552 .default_value = 0,
553 }, {
554 .id = V4L2_CID_HFLIP,
555 .type = V4L2_CTRL_TYPE_BOOLEAN,
556 .name = "Flip Horizontaly",
557 .minimum = 0,
558 .maximum = 1,
559 .step = 1,
560 .default_value = 0,
561 }, { /* gain = 1/32*val (=>gain=1 if val==32) */
562 .id = V4L2_CID_GAIN,
563 .type = V4L2_CTRL_TYPE_INTEGER,
564 .name = "Gain",
565 .minimum = 0,
566 .maximum = 63 * 2 * 2,
567 .step = 1,
568 .default_value = 32,
569 .flags = V4L2_CTRL_FLAG_SLIDER,
570 }, {
571 .id = V4L2_CID_EXPOSURE_AUTO,
572 .type = V4L2_CTRL_TYPE_BOOLEAN,
573 .name = "Auto Exposure",
574 .minimum = 0,
575 .maximum = 1,
576 .step = 1,
577 .default_value = 1,
578 }
579};
580
581static int mt9m111_video_probe(struct soc_camera_device *);
582static void mt9m111_video_remove(struct soc_camera_device *);
583static int mt9m111_get_control(struct soc_camera_device *,
584 struct v4l2_control *);
585static int mt9m111_set_control(struct soc_camera_device *,
586 struct v4l2_control *);
587static int mt9m111_resume(struct soc_camera_device *icd);
588static int mt9m111_init(struct soc_camera_device *icd);
589static int mt9m111_release(struct soc_camera_device *icd);
590
591static struct soc_camera_ops mt9m111_ops = {
592 .owner = THIS_MODULE,
593 .probe = mt9m111_video_probe,
594 .remove = mt9m111_video_remove,
595 .init = mt9m111_init,
596 .resume = mt9m111_resume,
597 .release = mt9m111_release,
598 .start_capture = mt9m111_start_capture,
599 .stop_capture = mt9m111_stop_capture,
600 .set_fmt_cap = mt9m111_set_fmt_cap,
601 .try_fmt_cap = mt9m111_try_fmt_cap,
602 .query_bus_param = mt9m111_query_bus_param,
603 .set_bus_param = mt9m111_set_bus_param,
604 .controls = mt9m111_controls,
605 .num_controls = ARRAY_SIZE(mt9m111_controls),
606 .get_control = mt9m111_get_control,
607 .set_control = mt9m111_set_control,
608 .get_chip_id = mt9m111_get_chip_id,
609#ifdef CONFIG_VIDEO_ADV_DEBUG
610 .get_register = mt9m111_get_register,
611 .set_register = mt9m111_set_register,
612#endif
613};
614
615static int mt9m111_set_flip(struct soc_camera_device *icd, int flip, int mask)
616{
617 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
618 int ret;
619
620 if (mt9m111->context == HIGHPOWER) {
621 if (flip)
622 ret = reg_set(READ_MODE_B, mask);
623 else
624 ret = reg_clear(READ_MODE_B, mask);
625 } else {
626 if (flip)
627 ret = reg_set(READ_MODE_A, mask);
628 else
629 ret = reg_clear(READ_MODE_A, mask);
630 }
631
632 return ret;
633}
634
635static int mt9m111_get_global_gain(struct soc_camera_device *icd)
636{
637 unsigned int data, gain;
638
639 data = reg_read(GLOBAL_GAIN);
640 if (data >= 0)
641 gain = ((data & (1 << 10)) * 2)
642 | ((data & (1 << 9)) * 2)
643 | (data & 0x2f);
644 else
645 gain = data;
646
647 return gain;
648}
649static int mt9m111_set_global_gain(struct soc_camera_device *icd, int gain)
650{
651 u16 val;
652
653 if (gain > 63 * 2 * 2)
654 return -EINVAL;
655
656 icd->gain = gain;
657 if ((gain >= 64 * 2) && (gain < 63 * 2 * 2))
658 val = (1 << 10) | (1 << 9) | (gain / 4);
659 else if ((gain >= 64) && (gain < 64 * 2))
660 val = (1 << 9) | (gain / 2);
661 else
662 val = gain;
663
664 return reg_write(GLOBAL_GAIN, val);
665}
666
667static int mt9m111_set_autoexposure(struct soc_camera_device *icd, int on)
668{
669 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
670 int ret;
671
672 if (on)
673 ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
674 else
675 ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN);
676
677 if (!ret)
678 mt9m111->autoexposure = on;
679
680 return ret;
681}
682static int mt9m111_get_control(struct soc_camera_device *icd,
683 struct v4l2_control *ctrl)
684{
685 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
686 int data;
687
688 switch (ctrl->id) {
689 case V4L2_CID_VFLIP:
690 if (mt9m111->context == HIGHPOWER)
691 data = reg_read(READ_MODE_B);
692 else
693 data = reg_read(READ_MODE_A);
694
695 if (data < 0)
696 return -EIO;
697 ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS);
698 break;
699 case V4L2_CID_HFLIP:
700 if (mt9m111->context == HIGHPOWER)
701 data = reg_read(READ_MODE_B);
702 else
703 data = reg_read(READ_MODE_A);
704
705 if (data < 0)
706 return -EIO;
707 ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS);
708 break;
709 case V4L2_CID_GAIN:
710 data = mt9m111_get_global_gain(icd);
711 if (data < 0)
712 return data;
713 ctrl->value = data;
714 break;
715 case V4L2_CID_EXPOSURE_AUTO:
716 ctrl->value = mt9m111->autoexposure;
717 break;
718 }
719 return 0;
720}
721
722static int mt9m111_set_control(struct soc_camera_device *icd,
723 struct v4l2_control *ctrl)
724{
725 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
726 const struct v4l2_queryctrl *qctrl;
727 int ret;
728
729 qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id);
730
731 if (!qctrl)
732 return -EINVAL;
733
734 switch (ctrl->id) {
735 case V4L2_CID_VFLIP:
736 mt9m111->vflip = ctrl->value;
737 ret = mt9m111_set_flip(icd, ctrl->value,
738 MT9M111_RMB_MIRROR_ROWS);
739 break;
740 case V4L2_CID_HFLIP:
741 mt9m111->hflip = ctrl->value;
742 ret = mt9m111_set_flip(icd, ctrl->value,
743 MT9M111_RMB_MIRROR_COLS);
744 break;
745 case V4L2_CID_GAIN:
746 ret = mt9m111_set_global_gain(icd, ctrl->value);
747 break;
748 case V4L2_CID_EXPOSURE_AUTO:
749 ret = mt9m111_set_autoexposure(icd, ctrl->value);
750 break;
751 default:
752 ret = -EINVAL;
753 }
754
755 return ret;
756}
757
758static int mt9m111_restore_state(struct soc_camera_device *icd)
759{
760 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
761
762 mt9m111_set_context(icd, mt9m111->context);
763 mt9m111_set_pixfmt(icd, mt9m111->pixfmt);
764 mt9m111_setup_rect(icd);
765 mt9m111_set_flip(icd, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS);
766 mt9m111_set_flip(icd, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS);
767 mt9m111_set_global_gain(icd, icd->gain);
768 mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
769 return 0;
770}
771
772static int mt9m111_resume(struct soc_camera_device *icd)
773{
774 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
775 int ret = 0;
776
777 if (mt9m111->powered) {
778 ret = mt9m111_enable(icd);
779 if (!ret)
780 ret = mt9m111_reset(icd);
781 if (!ret)
782 ret = mt9m111_restore_state(icd);
783 }
784 return ret;
785}
786
787static int mt9m111_init(struct soc_camera_device *icd)
788{
789 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
790 int ret;
791
792 mt9m111->context = HIGHPOWER;
793 ret = mt9m111_enable(icd);
794 if (!ret)
795 ret = mt9m111_reset(icd);
796 if (!ret)
797 ret = mt9m111_set_context(icd, mt9m111->context);
798 if (!ret)
799 ret = mt9m111_set_autoexposure(icd, mt9m111->autoexposure);
800 if (ret)
801 dev_err(&icd->dev, "mt9m111 init failed: %d\n", ret);
802 return ret;
803}
804
805static int mt9m111_release(struct soc_camera_device *icd)
806{
807 int ret;
808
809 ret = mt9m111_disable(icd);
810 if (ret < 0)
811 dev_err(&icd->dev, "mt9m111 release failed: %d\n", ret);
812
813 return ret;
814}
815
816/*
817 * Interface active, can use i2c. If it fails, it can indeed mean, that
818 * this wasn't our capture interface, so, we wait for the right one
819 */
820static int mt9m111_video_probe(struct soc_camera_device *icd)
821{
822 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
823 s32 data;
824 int ret;
825
826 /*
827 * We must have a parent by now. And it cannot be a wrong one.
828 * So this entire test is completely redundant.
829 */
830 if (!icd->dev.parent ||
831 to_soc_camera_host(icd->dev.parent)->nr != icd->iface)
832 return -ENODEV;
833
834 ret = mt9m111_enable(icd);
835 if (ret)
836 goto ei2c;
837 ret = mt9m111_reset(icd);
838 if (ret)
839 goto ei2c;
840
841 data = reg_read(CHIP_VERSION);
842
843 switch (data) {
844 case 0x143a:
845 mt9m111->model = V4L2_IDENT_MT9M111;
846 icd->formats = mt9m111_colour_formats;
847 icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats);
848 break;
849 default:
850 ret = -ENODEV;
851 dev_err(&icd->dev,
852 "No MT9M111 chip detected, register read %x\n", data);
853 goto ei2c;
854 }
855
856 dev_info(&icd->dev, "Detected a MT9M111 chip ID 0x143a\n");
857
858 ret = soc_camera_video_start(icd);
859 if (ret)
860 goto eisis;
861
862 mt9m111->autoexposure = 1;
863
864 mt9m111->swap_rgb_even_odd = 1;
865 mt9m111->swap_rgb_red_blue = 1;
866
867 return 0;
868eisis:
869ei2c:
870 return ret;
871}
872
873static void mt9m111_video_remove(struct soc_camera_device *icd)
874{
875 struct mt9m111 *mt9m111 = container_of(icd, struct mt9m111, icd);
876
877 dev_dbg(&icd->dev, "Video %x removed: %p, %p\n", mt9m111->client->addr,
878 mt9m111->icd.dev.parent, mt9m111->icd.vdev);
879 soc_camera_video_stop(&mt9m111->icd);
880}
881
882static int mt9m111_probe(struct i2c_client *client,
883 const struct i2c_device_id *did)
884{
885 struct mt9m111 *mt9m111;
886 struct soc_camera_device *icd;
887 struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
888 struct soc_camera_link *icl = client->dev.platform_data;
889 int ret;
890
891 if (!icl) {
892 dev_err(&client->dev, "MT9M111 driver needs platform data\n");
893 return -EINVAL;
894 }
895
896 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) {
897 dev_warn(&adapter->dev,
898 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n");
899 return -EIO;
900 }
901
902 mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL);
903 if (!mt9m111)
904 return -ENOMEM;
905
906 mt9m111->client = client;
907 i2c_set_clientdata(client, mt9m111);
908
909 /* Second stage probe - when a capture adapter is there */
910 icd = &mt9m111->icd;
911 icd->ops = &mt9m111_ops;
912 icd->control = &client->dev;
913 icd->x_min = MT9M111_MIN_DARK_COLS;
914 icd->y_min = MT9M111_MIN_DARK_ROWS;
915 icd->x_current = icd->x_min;
916 icd->y_current = icd->y_min;
917 icd->width_min = MT9M111_MIN_DARK_ROWS;
918 icd->width_max = MT9M111_MAX_WIDTH;
919 icd->height_min = MT9M111_MIN_DARK_COLS;
920 icd->height_max = MT9M111_MAX_HEIGHT;
921 icd->y_skip_top = 0;
922 icd->iface = icl->bus_id;
923
924 ret = soc_camera_device_register(icd);
925 if (ret)
926 goto eisdr;
927 return 0;
928
929eisdr:
930 kfree(mt9m111);
931 return ret;
932}
933
934static int mt9m111_remove(struct i2c_client *client)
935{
936 struct mt9m111 *mt9m111 = i2c_get_clientdata(client);
937 soc_camera_device_unregister(&mt9m111->icd);
938 kfree(mt9m111);
939
940 return 0;
941}
942
943static const struct i2c_device_id mt9m111_id[] = {
944 { "mt9m111", 0 },
945 { }
946};
947MODULE_DEVICE_TABLE(i2c, mt9m111_id);
948
949static struct i2c_driver mt9m111_i2c_driver = {
950 .driver = {
951 .name = "mt9m111",
952 },
953 .probe = mt9m111_probe,
954 .remove = mt9m111_remove,
955 .id_table = mt9m111_id,
956};
957
958static int __init mt9m111_mod_init(void)
959{
960 return i2c_add_driver(&mt9m111_i2c_driver);
961}
962
963static void __exit mt9m111_mod_exit(void)
964{
965 i2c_del_driver(&mt9m111_i2c_driver);
966}
967
968module_init(mt9m111_mod_init);
969module_exit(mt9m111_mod_exit);
970
971MODULE_DESCRIPTION("Micron MT9M111 Camera driver");
972MODULE_AUTHOR("Robert Jarzmik");
973MODULE_LICENSE("GPL");
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-25 12:08:31 -0500