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7397bfbe GL |
1 | /* |
2 | * Driver for MT9V022 CMOS Image Sensor from Micron | |
3 | * | |
4 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> | |
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 | ||
11 | #include <linux/videodev2.h> | |
12 | #include <linux/slab.h> | |
13 | #include <linux/i2c.h> | |
14 | #include <linux/delay.h> | |
15 | #include <linux/log2.h> | |
16 | ||
979ea1dd | 17 | #include <media/v4l2-subdev.h> |
7397bfbe GL |
18 | #include <media/v4l2-chip-ident.h> |
19 | #include <media/soc_camera.h> | |
20 | ||
7397bfbe | 21 | /* mt9v022 i2c address 0x48, 0x4c, 0x58, 0x5c |
979ea1dd GL |
22 | * The platform has to define ctruct i2c_board_info objects and link to them |
23 | * from struct soc_camera_link */ | |
7397bfbe GL |
24 | |
25 | static char *sensor_type; | |
26 | module_param(sensor_type, charp, S_IRUGO); | |
61a2d07d | 27 | MODULE_PARM_DESC(sensor_type, "Sensor type: \"colour\" or \"monochrome\""); |
7397bfbe GL |
28 | |
29 | /* mt9v022 selected register addresses */ | |
30 | #define MT9V022_CHIP_VERSION 0x00 | |
31 | #define MT9V022_COLUMN_START 0x01 | |
32 | #define MT9V022_ROW_START 0x02 | |
33 | #define MT9V022_WINDOW_HEIGHT 0x03 | |
34 | #define MT9V022_WINDOW_WIDTH 0x04 | |
35 | #define MT9V022_HORIZONTAL_BLANKING 0x05 | |
36 | #define MT9V022_VERTICAL_BLANKING 0x06 | |
37 | #define MT9V022_CHIP_CONTROL 0x07 | |
38 | #define MT9V022_SHUTTER_WIDTH1 0x08 | |
39 | #define MT9V022_SHUTTER_WIDTH2 0x09 | |
40 | #define MT9V022_SHUTTER_WIDTH_CTRL 0x0a | |
41 | #define MT9V022_TOTAL_SHUTTER_WIDTH 0x0b | |
42 | #define MT9V022_RESET 0x0c | |
43 | #define MT9V022_READ_MODE 0x0d | |
44 | #define MT9V022_MONITOR_MODE 0x0e | |
45 | #define MT9V022_PIXEL_OPERATION_MODE 0x0f | |
46 | #define MT9V022_LED_OUT_CONTROL 0x1b | |
47 | #define MT9V022_ADC_MODE_CONTROL 0x1c | |
48 | #define MT9V022_ANALOG_GAIN 0x34 | |
49 | #define MT9V022_BLACK_LEVEL_CALIB_CTRL 0x47 | |
50 | #define MT9V022_PIXCLK_FV_LV 0x74 | |
51 | #define MT9V022_DIGITAL_TEST_PATTERN 0x7f | |
52 | #define MT9V022_AEC_AGC_ENABLE 0xAF | |
53 | #define MT9V022_MAX_TOTAL_SHUTTER_WIDTH 0xBD | |
54 | ||
55 | /* Progressive scan, master, defaults */ | |
56 | #define MT9V022_CHIP_CONTROL_DEFAULT 0x188 | |
57 | ||
6a6c8786 GL |
58 | #define MT9V022_MAX_WIDTH 752 |
59 | #define MT9V022_MAX_HEIGHT 480 | |
60 | #define MT9V022_MIN_WIDTH 48 | |
61 | #define MT9V022_MIN_HEIGHT 32 | |
62 | #define MT9V022_COLUMN_SKIP 1 | |
63 | #define MT9V022_ROW_SKIP 4 | |
64 | ||
bb55de3b GL |
65 | static const struct soc_camera_data_format mt9v022_colour_formats[] = { |
66 | /* Order important: first natively supported, | |
67 | * second supported with a GPIO extender */ | |
7397bfbe | 68 | { |
bb55de3b | 69 | .name = "Bayer (sRGB) 10 bit", |
7397bfbe GL |
70 | .depth = 10, |
71 | .fourcc = V4L2_PIX_FMT_SBGGR16, | |
72 | .colorspace = V4L2_COLORSPACE_SRGB, | |
73 | }, { | |
bb55de3b GL |
74 | .name = "Bayer (sRGB) 8 bit", |
75 | .depth = 8, | |
76 | .fourcc = V4L2_PIX_FMT_SBGGR8, | |
77 | .colorspace = V4L2_COLORSPACE_SRGB, | |
78 | } | |
79 | }; | |
80 | ||
81 | static const struct soc_camera_data_format mt9v022_monochrome_formats[] = { | |
82 | /* Order important - see above */ | |
83 | { | |
7397bfbe GL |
84 | .name = "Monochrome 10 bit", |
85 | .depth = 10, | |
86 | .fourcc = V4L2_PIX_FMT_Y16, | |
87 | }, { | |
88 | .name = "Monochrome 8 bit", | |
89 | .depth = 8, | |
90 | .fourcc = V4L2_PIX_FMT_GREY, | |
91 | }, | |
92 | }; | |
93 | ||
94 | struct mt9v022 { | |
979ea1dd | 95 | struct v4l2_subdev subdev; |
6a6c8786 GL |
96 | struct v4l2_rect rect; /* Sensor window */ |
97 | __u32 fourcc; | |
7fb0fd05 | 98 | int model; /* V4L2_IDENT_MT9V022* codes from v4l2-chip-ident.h */ |
7397bfbe | 99 | u16 chip_control; |
7397bfbe GL |
100 | }; |
101 | ||
979ea1dd GL |
102 | static struct mt9v022 *to_mt9v022(const struct i2c_client *client) |
103 | { | |
104 | return container_of(i2c_get_clientdata(client), struct mt9v022, subdev); | |
105 | } | |
106 | ||
9538e1c2 | 107 | static int reg_read(struct i2c_client *client, const u8 reg) |
7397bfbe | 108 | { |
7397bfbe GL |
109 | s32 data = i2c_smbus_read_word_data(client, reg); |
110 | return data < 0 ? data : swab16(data); | |
111 | } | |
112 | ||
9538e1c2 | 113 | static int reg_write(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
114 | const u16 data) |
115 | { | |
9538e1c2 | 116 | return i2c_smbus_write_word_data(client, reg, swab16(data)); |
7397bfbe GL |
117 | } |
118 | ||
9538e1c2 | 119 | static int reg_set(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
120 | const u16 data) |
121 | { | |
122 | int ret; | |
123 | ||
9538e1c2 | 124 | ret = reg_read(client, reg); |
7397bfbe GL |
125 | if (ret < 0) |
126 | return ret; | |
9538e1c2 | 127 | return reg_write(client, reg, ret | data); |
7397bfbe GL |
128 | } |
129 | ||
9538e1c2 | 130 | static int reg_clear(struct i2c_client *client, const u8 reg, |
7397bfbe GL |
131 | const u16 data) |
132 | { | |
133 | int ret; | |
134 | ||
9538e1c2 | 135 | ret = reg_read(client, reg); |
7397bfbe GL |
136 | if (ret < 0) |
137 | return ret; | |
9538e1c2 | 138 | return reg_write(client, reg, ret & ~data); |
7397bfbe GL |
139 | } |
140 | ||
a4c56fd8 | 141 | static int mt9v022_init(struct i2c_client *client) |
7397bfbe | 142 | { |
979ea1dd | 143 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
7397bfbe GL |
144 | int ret; |
145 | ||
146 | /* Almost the default mode: master, parallel, simultaneous, and an | |
147 | * undocumented bit 0x200, which is present in table 7, but not in 8, | |
148 | * plus snapshot mode to disable scan for now */ | |
149 | mt9v022->chip_control |= 0x10; | |
9538e1c2 | 150 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
11211641 | 151 | if (!ret) |
9538e1c2 | 152 | ret = reg_write(client, MT9V022_READ_MODE, 0x300); |
7397bfbe GL |
153 | |
154 | /* All defaults */ | |
11211641 | 155 | if (!ret) |
7397bfbe | 156 | /* AEC, AGC on */ |
9538e1c2 | 157 | ret = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x3); |
11211641 | 158 | if (!ret) |
9538e1c2 | 159 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, 480); |
11211641 | 160 | if (!ret) |
7397bfbe | 161 | /* default - auto */ |
9538e1c2 | 162 | ret = reg_clear(client, MT9V022_BLACK_LEVEL_CALIB_CTRL, 1); |
11211641 | 163 | if (!ret) |
9538e1c2 | 164 | ret = reg_write(client, MT9V022_DIGITAL_TEST_PATTERN, 0); |
7397bfbe | 165 | |
11211641 | 166 | return ret; |
7397bfbe GL |
167 | } |
168 | ||
979ea1dd | 169 | static int mt9v022_s_stream(struct v4l2_subdev *sd, int enable) |
7397bfbe | 170 | { |
979ea1dd GL |
171 | struct i2c_client *client = sd->priv; |
172 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
81034663 | 173 | |
979ea1dd GL |
174 | if (enable) |
175 | /* Switch to master "normal" mode */ | |
176 | mt9v022->chip_control &= ~0x10; | |
177 | else | |
178 | /* Switch to snapshot mode */ | |
179 | mt9v022->chip_control |= 0x10; | |
7397bfbe | 180 | |
979ea1dd | 181 | if (reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control) < 0) |
7397bfbe GL |
182 | return -EIO; |
183 | return 0; | |
184 | } | |
185 | ||
ad5f2e85 GL |
186 | static int mt9v022_set_bus_param(struct soc_camera_device *icd, |
187 | unsigned long flags) | |
7397bfbe | 188 | { |
40e2e092 | 189 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); |
979ea1dd | 190 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
40e2e092 | 191 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
ad5f2e85 | 192 | unsigned int width_flag = flags & SOCAM_DATAWIDTH_MASK; |
7397bfbe | 193 | int ret; |
ad5f2e85 | 194 | u16 pixclk = 0; |
7397bfbe GL |
195 | |
196 | /* Only one width bit may be set */ | |
197 | if (!is_power_of_2(width_flag)) | |
198 | return -EINVAL; | |
199 | ||
e958e27a SH |
200 | if (icl->set_bus_param) { |
201 | ret = icl->set_bus_param(icl, width_flag); | |
202 | if (ret) | |
ad5f2e85 | 203 | return ret; |
e958e27a SH |
204 | } else { |
205 | /* | |
206 | * Without board specific bus width settings we only support the | |
207 | * sensors native bus width | |
208 | */ | |
209 | if (width_flag != SOCAM_DATAWIDTH_10) | |
210 | return -EINVAL; | |
ad5f2e85 GL |
211 | } |
212 | ||
bd73b36f GL |
213 | flags = soc_camera_apply_sensor_flags(icl, flags); |
214 | ||
ad5f2e85 GL |
215 | if (flags & SOCAM_PCLK_SAMPLE_RISING) |
216 | pixclk |= 0x10; | |
217 | ||
218 | if (!(flags & SOCAM_HSYNC_ACTIVE_HIGH)) | |
219 | pixclk |= 0x1; | |
220 | ||
221 | if (!(flags & SOCAM_VSYNC_ACTIVE_HIGH)) | |
222 | pixclk |= 0x2; | |
223 | ||
9538e1c2 | 224 | ret = reg_write(client, MT9V022_PIXCLK_FV_LV, pixclk); |
ad5f2e85 GL |
225 | if (ret < 0) |
226 | return ret; | |
227 | ||
228 | if (!(flags & SOCAM_MASTER)) | |
229 | mt9v022->chip_control &= ~0x8; | |
230 | ||
9538e1c2 | 231 | ret = reg_write(client, MT9V022_CHIP_CONTROL, mt9v022->chip_control); |
ad5f2e85 GL |
232 | if (ret < 0) |
233 | return ret; | |
234 | ||
85f8be68 | 235 | dev_dbg(&client->dev, "Calculated pixclk 0x%x, chip control 0x%x\n", |
ad5f2e85 GL |
236 | pixclk, mt9v022->chip_control); |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | static unsigned long mt9v022_query_bus_param(struct soc_camera_device *icd) | |
242 | { | |
40e2e092 | 243 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
e958e27a | 244 | unsigned int width_flag; |
ad5f2e85 | 245 | |
e958e27a SH |
246 | if (icl->query_bus_param) |
247 | width_flag = icl->query_bus_param(icl) & | |
248 | SOCAM_DATAWIDTH_MASK; | |
249 | else | |
250 | width_flag = SOCAM_DATAWIDTH_10; | |
ad5f2e85 GL |
251 | |
252 | return SOCAM_PCLK_SAMPLE_RISING | SOCAM_PCLK_SAMPLE_FALLING | | |
253 | SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_HSYNC_ACTIVE_LOW | | |
254 | SOCAM_VSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_LOW | | |
2d9329f3 | 255 | SOCAM_DATA_ACTIVE_HIGH | SOCAM_MASTER | SOCAM_SLAVE | |
ad5f2e85 GL |
256 | width_flag; |
257 | } | |
258 | ||
08590b96 | 259 | static int mt9v022_s_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) |
ad5f2e85 | 260 | { |
08590b96 | 261 | struct i2c_client *client = sd->priv; |
6a6c8786 GL |
262 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
263 | struct v4l2_rect rect = a->c; | |
08590b96 | 264 | struct soc_camera_device *icd = client->dev.platform_data; |
ad5f2e85 GL |
265 | int ret; |
266 | ||
6a6c8786 GL |
267 | /* Bayer format - even size lengths */ |
268 | if (mt9v022->fourcc == V4L2_PIX_FMT_SBGGR8 || | |
269 | mt9v022->fourcc == V4L2_PIX_FMT_SBGGR16) { | |
270 | rect.width = ALIGN(rect.width, 2); | |
271 | rect.height = ALIGN(rect.height, 2); | |
272 | /* Let the user play with the starting pixel */ | |
273 | } | |
274 | ||
275 | soc_camera_limit_side(&rect.left, &rect.width, | |
276 | MT9V022_COLUMN_SKIP, MT9V022_MIN_WIDTH, MT9V022_MAX_WIDTH); | |
277 | ||
278 | soc_camera_limit_side(&rect.top, &rect.height, | |
279 | MT9V022_ROW_SKIP, MT9V022_MIN_HEIGHT, MT9V022_MAX_HEIGHT); | |
280 | ||
7397bfbe | 281 | /* Like in example app. Contradicts the datasheet though */ |
9538e1c2 | 282 | ret = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
283 | if (ret >= 0) { |
284 | if (ret & 1) /* Autoexposure */ | |
9538e1c2 | 285 | ret = reg_write(client, MT9V022_MAX_TOTAL_SHUTTER_WIDTH, |
6a6c8786 | 286 | rect.height + icd->y_skip_top + 43); |
7397bfbe | 287 | else |
9538e1c2 | 288 | ret = reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, |
6a6c8786 | 289 | rect.height + icd->y_skip_top + 43); |
7397bfbe GL |
290 | } |
291 | /* Setup frame format: defaults apart from width and height */ | |
11211641 | 292 | if (!ret) |
6a6c8786 | 293 | ret = reg_write(client, MT9V022_COLUMN_START, rect.left); |
11211641 | 294 | if (!ret) |
6a6c8786 | 295 | ret = reg_write(client, MT9V022_ROW_START, rect.top); |
11211641 | 296 | if (!ret) |
7397bfbe GL |
297 | /* Default 94, Phytec driver says: |
298 | * "width + horizontal blank >= 660" */ | |
9538e1c2 | 299 | ret = reg_write(client, MT9V022_HORIZONTAL_BLANKING, |
6a6c8786 GL |
300 | rect.width > 660 - 43 ? 43 : |
301 | 660 - rect.width); | |
11211641 | 302 | if (!ret) |
9538e1c2 | 303 | ret = reg_write(client, MT9V022_VERTICAL_BLANKING, 45); |
11211641 | 304 | if (!ret) |
6a6c8786 | 305 | ret = reg_write(client, MT9V022_WINDOW_WIDTH, rect.width); |
11211641 | 306 | if (!ret) |
9538e1c2 | 307 | ret = reg_write(client, MT9V022_WINDOW_HEIGHT, |
6a6c8786 | 308 | rect.height + icd->y_skip_top); |
7397bfbe GL |
309 | |
310 | if (ret < 0) | |
311 | return ret; | |
312 | ||
6a6c8786 GL |
313 | dev_dbg(&client->dev, "Frame %ux%u pixel\n", rect.width, rect.height); |
314 | ||
315 | mt9v022->rect = rect; | |
316 | ||
317 | return 0; | |
318 | } | |
319 | ||
320 | static int mt9v022_g_crop(struct v4l2_subdev *sd, struct v4l2_crop *a) | |
321 | { | |
322 | struct i2c_client *client = sd->priv; | |
323 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
324 | ||
325 | a->c = mt9v022->rect; | |
326 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
327 | ||
328 | return 0; | |
329 | } | |
330 | ||
331 | static int mt9v022_cropcap(struct v4l2_subdev *sd, struct v4l2_cropcap *a) | |
332 | { | |
333 | a->bounds.left = MT9V022_COLUMN_SKIP; | |
334 | a->bounds.top = MT9V022_ROW_SKIP; | |
335 | a->bounds.width = MT9V022_MAX_WIDTH; | |
336 | a->bounds.height = MT9V022_MAX_HEIGHT; | |
337 | a->defrect = a->bounds; | |
338 | a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; | |
339 | a->pixelaspect.numerator = 1; | |
340 | a->pixelaspect.denominator = 1; | |
341 | ||
342 | return 0; | |
343 | } | |
344 | ||
345 | static int mt9v022_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) | |
346 | { | |
347 | struct i2c_client *client = sd->priv; | |
348 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
349 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
350 | ||
351 | pix->width = mt9v022->rect.width; | |
352 | pix->height = mt9v022->rect.height; | |
353 | pix->pixelformat = mt9v022->fourcc; | |
354 | pix->field = V4L2_FIELD_NONE; | |
355 | pix->colorspace = V4L2_COLORSPACE_SRGB; | |
7397bfbe | 356 | |
7397bfbe GL |
357 | return 0; |
358 | } | |
359 | ||
979ea1dd | 360 | static int mt9v022_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) |
09e231b3 | 361 | { |
979ea1dd GL |
362 | struct i2c_client *client = sd->priv; |
363 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
09e231b3 | 364 | struct v4l2_pix_format *pix = &f->fmt.pix; |
08590b96 GL |
365 | struct v4l2_crop a = { |
366 | .c = { | |
6a6c8786 GL |
367 | .left = mt9v022->rect.left, |
368 | .top = mt9v022->rect.top, | |
08590b96 GL |
369 | .width = pix->width, |
370 | .height = pix->height, | |
371 | }, | |
09e231b3 | 372 | }; |
6a6c8786 | 373 | int ret; |
09e231b3 GL |
374 | |
375 | /* The caller provides a supported format, as verified per call to | |
376 | * icd->try_fmt(), datawidth is from our supported format list */ | |
377 | switch (pix->pixelformat) { | |
378 | case V4L2_PIX_FMT_GREY: | |
379 | case V4L2_PIX_FMT_Y16: | |
380 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATM) | |
381 | return -EINVAL; | |
382 | break; | |
383 | case V4L2_PIX_FMT_SBGGR8: | |
384 | case V4L2_PIX_FMT_SBGGR16: | |
385 | if (mt9v022->model != V4L2_IDENT_MT9V022IX7ATC) | |
386 | return -EINVAL; | |
387 | break; | |
388 | case 0: | |
389 | /* No format change, only geometry */ | |
390 | break; | |
391 | default: | |
392 | return -EINVAL; | |
393 | } | |
394 | ||
395 | /* No support for scaling on this camera, just crop. */ | |
6a6c8786 GL |
396 | ret = mt9v022_s_crop(sd, &a); |
397 | if (!ret) { | |
398 | pix->width = mt9v022->rect.width; | |
399 | pix->height = mt9v022->rect.height; | |
400 | mt9v022->fourcc = pix->pixelformat; | |
401 | } | |
402 | ||
403 | return ret; | |
09e231b3 GL |
404 | } |
405 | ||
979ea1dd | 406 | static int mt9v022_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) |
7397bfbe | 407 | { |
979ea1dd GL |
408 | struct i2c_client *client = sd->priv; |
409 | struct soc_camera_device *icd = client->dev.platform_data; | |
64f5905e | 410 | struct v4l2_pix_format *pix = &f->fmt.pix; |
6a6c8786 GL |
411 | int align = pix->pixelformat == V4L2_PIX_FMT_SBGGR8 || |
412 | pix->pixelformat == V4L2_PIX_FMT_SBGGR16; | |
64f5905e | 413 | |
6a6c8786 GL |
414 | v4l_bound_align_image(&pix->width, MT9V022_MIN_WIDTH, |
415 | MT9V022_MAX_WIDTH, align, | |
416 | &pix->height, MT9V022_MIN_HEIGHT + icd->y_skip_top, | |
417 | MT9V022_MAX_HEIGHT + icd->y_skip_top, align, 0); | |
7397bfbe GL |
418 | |
419 | return 0; | |
420 | } | |
421 | ||
979ea1dd GL |
422 | static int mt9v022_g_chip_ident(struct v4l2_subdev *sd, |
423 | struct v4l2_dbg_chip_ident *id) | |
7397bfbe | 424 | { |
979ea1dd GL |
425 | struct i2c_client *client = sd->priv; |
426 | struct mt9v022 *mt9v022 = to_mt9v022(client); | |
7397bfbe | 427 | |
aecde8b5 | 428 | if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) |
7397bfbe GL |
429 | return -EINVAL; |
430 | ||
40e2e092 | 431 | if (id->match.addr != client->addr) |
7397bfbe GL |
432 | return -ENODEV; |
433 | ||
434 | id->ident = mt9v022->model; | |
435 | id->revision = 0; | |
436 | ||
437 | return 0; | |
438 | } | |
439 | ||
440 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
979ea1dd GL |
441 | static int mt9v022_g_register(struct v4l2_subdev *sd, |
442 | struct v4l2_dbg_register *reg) | |
7397bfbe | 443 | { |
979ea1dd | 444 | struct i2c_client *client = sd->priv; |
7397bfbe | 445 | |
aecde8b5 | 446 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
447 | return -EINVAL; |
448 | ||
9538e1c2 | 449 | if (reg->match.addr != client->addr) |
7397bfbe GL |
450 | return -ENODEV; |
451 | ||
aecde8b5 | 452 | reg->size = 2; |
9538e1c2 | 453 | reg->val = reg_read(client, reg->reg); |
7397bfbe GL |
454 | |
455 | if (reg->val > 0xffff) | |
456 | return -EIO; | |
457 | ||
458 | return 0; | |
459 | } | |
460 | ||
979ea1dd GL |
461 | static int mt9v022_s_register(struct v4l2_subdev *sd, |
462 | struct v4l2_dbg_register *reg) | |
7397bfbe | 463 | { |
979ea1dd | 464 | struct i2c_client *client = sd->priv; |
7397bfbe | 465 | |
aecde8b5 | 466 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0xff) |
7397bfbe GL |
467 | return -EINVAL; |
468 | ||
9538e1c2 | 469 | if (reg->match.addr != client->addr) |
7397bfbe GL |
470 | return -ENODEV; |
471 | ||
9538e1c2 | 472 | if (reg_write(client, reg->reg, reg->val) < 0) |
7397bfbe GL |
473 | return -EIO; |
474 | ||
475 | return 0; | |
476 | } | |
477 | #endif | |
478 | ||
4407a463 | 479 | static const struct v4l2_queryctrl mt9v022_controls[] = { |
7397bfbe GL |
480 | { |
481 | .id = V4L2_CID_VFLIP, | |
482 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
483 | .name = "Flip Vertically", | |
484 | .minimum = 0, | |
485 | .maximum = 1, | |
486 | .step = 1, | |
487 | .default_value = 0, | |
488 | }, { | |
489 | .id = V4L2_CID_HFLIP, | |
490 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
491 | .name = "Flip Horizontally", | |
492 | .minimum = 0, | |
493 | .maximum = 1, | |
494 | .step = 1, | |
495 | .default_value = 0, | |
496 | }, { | |
497 | .id = V4L2_CID_GAIN, | |
498 | .type = V4L2_CTRL_TYPE_INTEGER, | |
499 | .name = "Analog Gain", | |
500 | .minimum = 64, | |
501 | .maximum = 127, | |
502 | .step = 1, | |
503 | .default_value = 64, | |
504 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
505 | }, { | |
506 | .id = V4L2_CID_EXPOSURE, | |
507 | .type = V4L2_CTRL_TYPE_INTEGER, | |
508 | .name = "Exposure", | |
509 | .minimum = 1, | |
510 | .maximum = 255, | |
511 | .step = 1, | |
512 | .default_value = 255, | |
513 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
514 | }, { | |
515 | .id = V4L2_CID_AUTOGAIN, | |
516 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
517 | .name = "Automatic Gain", | |
518 | .minimum = 0, | |
519 | .maximum = 1, | |
520 | .step = 1, | |
521 | .default_value = 1, | |
522 | }, { | |
523 | .id = V4L2_CID_EXPOSURE_AUTO, | |
524 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
525 | .name = "Automatic Exposure", | |
526 | .minimum = 0, | |
527 | .maximum = 1, | |
528 | .step = 1, | |
529 | .default_value = 1, | |
530 | } | |
531 | }; | |
532 | ||
7397bfbe | 533 | static struct soc_camera_ops mt9v022_ops = { |
ad5f2e85 GL |
534 | .set_bus_param = mt9v022_set_bus_param, |
535 | .query_bus_param = mt9v022_query_bus_param, | |
7397bfbe GL |
536 | .controls = mt9v022_controls, |
537 | .num_controls = ARRAY_SIZE(mt9v022_controls), | |
7397bfbe GL |
538 | }; |
539 | ||
979ea1dd | 540 | static int mt9v022_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
7397bfbe | 541 | { |
979ea1dd | 542 | struct i2c_client *client = sd->priv; |
7397bfbe GL |
543 | int data; |
544 | ||
545 | switch (ctrl->id) { | |
546 | case V4L2_CID_VFLIP: | |
9538e1c2 | 547 | data = reg_read(client, MT9V022_READ_MODE); |
7397bfbe GL |
548 | if (data < 0) |
549 | return -EIO; | |
550 | ctrl->value = !!(data & 0x10); | |
551 | break; | |
552 | case V4L2_CID_HFLIP: | |
9538e1c2 | 553 | data = reg_read(client, MT9V022_READ_MODE); |
7397bfbe GL |
554 | if (data < 0) |
555 | return -EIO; | |
556 | ctrl->value = !!(data & 0x20); | |
557 | break; | |
558 | case V4L2_CID_EXPOSURE_AUTO: | |
9538e1c2 | 559 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
560 | if (data < 0) |
561 | return -EIO; | |
562 | ctrl->value = !!(data & 0x1); | |
563 | break; | |
564 | case V4L2_CID_AUTOGAIN: | |
9538e1c2 | 565 | data = reg_read(client, MT9V022_AEC_AGC_ENABLE); |
7397bfbe GL |
566 | if (data < 0) |
567 | return -EIO; | |
568 | ctrl->value = !!(data & 0x2); | |
569 | break; | |
570 | } | |
571 | return 0; | |
572 | } | |
573 | ||
979ea1dd | 574 | static int mt9v022_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) |
7397bfbe GL |
575 | { |
576 | int data; | |
979ea1dd GL |
577 | struct i2c_client *client = sd->priv; |
578 | struct soc_camera_device *icd = client->dev.platform_data; | |
7397bfbe GL |
579 | const struct v4l2_queryctrl *qctrl; |
580 | ||
581 | qctrl = soc_camera_find_qctrl(&mt9v022_ops, ctrl->id); | |
7397bfbe GL |
582 | if (!qctrl) |
583 | return -EINVAL; | |
584 | ||
585 | switch (ctrl->id) { | |
586 | case V4L2_CID_VFLIP: | |
587 | if (ctrl->value) | |
9538e1c2 | 588 | data = reg_set(client, MT9V022_READ_MODE, 0x10); |
7397bfbe | 589 | else |
9538e1c2 | 590 | data = reg_clear(client, MT9V022_READ_MODE, 0x10); |
7397bfbe GL |
591 | if (data < 0) |
592 | return -EIO; | |
593 | break; | |
594 | case V4L2_CID_HFLIP: | |
595 | if (ctrl->value) | |
9538e1c2 | 596 | data = reg_set(client, MT9V022_READ_MODE, 0x20); |
7397bfbe | 597 | else |
9538e1c2 | 598 | data = reg_clear(client, MT9V022_READ_MODE, 0x20); |
7397bfbe GL |
599 | if (data < 0) |
600 | return -EIO; | |
601 | break; | |
602 | case V4L2_CID_GAIN: | |
603 | /* mt9v022 has minimum == default */ | |
604 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
605 | return -EINVAL; | |
606 | else { | |
607 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
608 | /* Datasheet says 16 to 64. autogain only works properly | |
609 | * after setting gain to maximum 14. Larger values | |
610 | * produce "white fly" noise effect. On the whole, | |
611 | * manually setting analog gain does no good. */ | |
612 | unsigned long gain = ((ctrl->value - qctrl->minimum) * | |
613 | 10 + range / 2) / range + 4; | |
614 | if (gain >= 32) | |
615 | gain &= ~1; | |
616 | /* The user wants to set gain manually, hope, she | |
617 | * knows, what she's doing... Switch AGC off. */ | |
618 | ||
9538e1c2 | 619 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2) < 0) |
7397bfbe GL |
620 | return -EIO; |
621 | ||
85f8be68 | 622 | dev_info(&client->dev, "Setting gain from %d to %lu\n", |
9538e1c2 GL |
623 | reg_read(client, MT9V022_ANALOG_GAIN), gain); |
624 | if (reg_write(client, MT9V022_ANALOG_GAIN, gain) < 0) | |
7397bfbe GL |
625 | return -EIO; |
626 | icd->gain = ctrl->value; | |
627 | } | |
628 | break; | |
629 | case V4L2_CID_EXPOSURE: | |
630 | /* mt9v022 has maximum == default */ | |
631 | if (ctrl->value > qctrl->maximum || ctrl->value < qctrl->minimum) | |
632 | return -EINVAL; | |
633 | else { | |
634 | unsigned long range = qctrl->maximum - qctrl->minimum; | |
635 | unsigned long shutter = ((ctrl->value - qctrl->minimum) * | |
636 | 479 + range / 2) / range + 1; | |
637 | /* The user wants to set shutter width manually, hope, | |
638 | * she knows, what she's doing... Switch AEC off. */ | |
639 | ||
9538e1c2 | 640 | if (reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1) < 0) |
7397bfbe GL |
641 | return -EIO; |
642 | ||
85f8be68 | 643 | dev_dbg(&client->dev, "Shutter width from %d to %lu\n", |
9538e1c2 | 644 | reg_read(client, MT9V022_TOTAL_SHUTTER_WIDTH), |
7397bfbe | 645 | shutter); |
9538e1c2 | 646 | if (reg_write(client, MT9V022_TOTAL_SHUTTER_WIDTH, |
7397bfbe GL |
647 | shutter) < 0) |
648 | return -EIO; | |
649 | icd->exposure = ctrl->value; | |
650 | } | |
651 | break; | |
652 | case V4L2_CID_AUTOGAIN: | |
653 | if (ctrl->value) | |
9538e1c2 | 654 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x2); |
7397bfbe | 655 | else |
9538e1c2 | 656 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x2); |
7397bfbe GL |
657 | if (data < 0) |
658 | return -EIO; | |
659 | break; | |
660 | case V4L2_CID_EXPOSURE_AUTO: | |
661 | if (ctrl->value) | |
9538e1c2 | 662 | data = reg_set(client, MT9V022_AEC_AGC_ENABLE, 0x1); |
7397bfbe | 663 | else |
9538e1c2 | 664 | data = reg_clear(client, MT9V022_AEC_AGC_ENABLE, 0x1); |
7397bfbe GL |
665 | if (data < 0) |
666 | return -EIO; | |
667 | break; | |
668 | } | |
669 | return 0; | |
670 | } | |
671 | ||
672 | /* Interface active, can use i2c. If it fails, it can indeed mean, that | |
673 | * this wasn't our capture interface, so, we wait for the right one */ | |
40e2e092 GL |
674 | static int mt9v022_video_probe(struct soc_camera_device *icd, |
675 | struct i2c_client *client) | |
7397bfbe | 676 | { |
979ea1dd | 677 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
40e2e092 | 678 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
7397bfbe GL |
679 | s32 data; |
680 | int ret; | |
e958e27a | 681 | unsigned long flags; |
7397bfbe GL |
682 | |
683 | if (!icd->dev.parent || | |
684 | to_soc_camera_host(icd->dev.parent)->nr != icd->iface) | |
685 | return -ENODEV; | |
686 | ||
687 | /* Read out the chip version register */ | |
9538e1c2 | 688 | data = reg_read(client, MT9V022_CHIP_VERSION); |
7397bfbe GL |
689 | |
690 | /* must be 0x1311 or 0x1313 */ | |
691 | if (data != 0x1311 && data != 0x1313) { | |
692 | ret = -ENODEV; | |
85f8be68 | 693 | dev_info(&client->dev, "No MT9V022 found, ID register 0x%x\n", |
7397bfbe GL |
694 | data); |
695 | goto ei2c; | |
696 | } | |
697 | ||
698 | /* Soft reset */ | |
9538e1c2 | 699 | ret = reg_write(client, MT9V022_RESET, 1); |
7397bfbe GL |
700 | if (ret < 0) |
701 | goto ei2c; | |
702 | /* 15 clock cycles */ | |
703 | udelay(200); | |
9538e1c2 | 704 | if (reg_read(client, MT9V022_RESET)) { |
85f8be68 | 705 | dev_err(&client->dev, "Resetting MT9V022 failed!\n"); |
40e2e092 GL |
706 | if (ret > 0) |
707 | ret = -EIO; | |
7397bfbe GL |
708 | goto ei2c; |
709 | } | |
710 | ||
711 | /* Set monochrome or colour sensor type */ | |
712 | if (sensor_type && (!strcmp("colour", sensor_type) || | |
713 | !strcmp("color", sensor_type))) { | |
9538e1c2 | 714 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 4 | 0x11); |
7397bfbe | 715 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATC; |
26f1b942 | 716 | icd->formats = mt9v022_colour_formats; |
7397bfbe | 717 | } else { |
9538e1c2 | 718 | ret = reg_write(client, MT9V022_PIXEL_OPERATION_MODE, 0x11); |
7397bfbe | 719 | mt9v022->model = V4L2_IDENT_MT9V022IX7ATM; |
26f1b942 | 720 | icd->formats = mt9v022_monochrome_formats; |
7397bfbe GL |
721 | } |
722 | ||
e958e27a | 723 | if (ret < 0) |
40e2e092 | 724 | goto ei2c; |
e958e27a SH |
725 | |
726 | icd->num_formats = 0; | |
727 | ||
728 | /* | |
729 | * This is a 10bit sensor, so by default we only allow 10bit. | |
730 | * The platform may support different bus widths due to | |
731 | * different routing of the data lines. | |
732 | */ | |
733 | if (icl->query_bus_param) | |
734 | flags = icl->query_bus_param(icl); | |
735 | else | |
736 | flags = SOCAM_DATAWIDTH_10; | |
737 | ||
738 | if (flags & SOCAM_DATAWIDTH_10) | |
739 | icd->num_formats++; | |
740 | else | |
741 | icd->formats++; | |
742 | ||
743 | if (flags & SOCAM_DATAWIDTH_8) | |
744 | icd->num_formats++; | |
745 | ||
6a6c8786 GL |
746 | mt9v022->fourcc = icd->formats->fourcc; |
747 | ||
85f8be68 | 748 | dev_info(&client->dev, "Detected a MT9V022 chip ID %x, %s sensor\n", |
7397bfbe GL |
749 | data, mt9v022->model == V4L2_IDENT_MT9V022IX7ATM ? |
750 | "monochrome" : "colour"); | |
751 | ||
a4c56fd8 GL |
752 | ret = mt9v022_init(client); |
753 | if (ret < 0) | |
754 | dev_err(&client->dev, "Failed to initialise the camera\n"); | |
755 | ||
7397bfbe GL |
756 | ei2c: |
757 | return ret; | |
758 | } | |
759 | ||
760 | static void mt9v022_video_remove(struct soc_camera_device *icd) | |
761 | { | |
40e2e092 | 762 | struct soc_camera_link *icl = to_soc_camera_link(icd); |
7397bfbe | 763 | |
6a6c8786 | 764 | dev_dbg(&icd->dev, "Video removed: %p, %p\n", |
a85bdace | 765 | icd->dev.parent, icd->vdev); |
594bb46d GL |
766 | if (icl->free_bus) |
767 | icl->free_bus(icl); | |
7397bfbe GL |
768 | } |
769 | ||
979ea1dd GL |
770 | static struct v4l2_subdev_core_ops mt9v022_subdev_core_ops = { |
771 | .g_ctrl = mt9v022_g_ctrl, | |
772 | .s_ctrl = mt9v022_s_ctrl, | |
773 | .g_chip_ident = mt9v022_g_chip_ident, | |
774 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
775 | .g_register = mt9v022_g_register, | |
776 | .s_register = mt9v022_s_register, | |
777 | #endif | |
778 | }; | |
779 | ||
780 | static struct v4l2_subdev_video_ops mt9v022_subdev_video_ops = { | |
781 | .s_stream = mt9v022_s_stream, | |
782 | .s_fmt = mt9v022_s_fmt, | |
6a6c8786 | 783 | .g_fmt = mt9v022_g_fmt, |
979ea1dd | 784 | .try_fmt = mt9v022_try_fmt, |
08590b96 | 785 | .s_crop = mt9v022_s_crop, |
6a6c8786 GL |
786 | .g_crop = mt9v022_g_crop, |
787 | .cropcap = mt9v022_cropcap, | |
979ea1dd GL |
788 | }; |
789 | ||
790 | static struct v4l2_subdev_ops mt9v022_subdev_ops = { | |
791 | .core = &mt9v022_subdev_core_ops, | |
792 | .video = &mt9v022_subdev_video_ops, | |
793 | }; | |
794 | ||
d2653e92 JD |
795 | static int mt9v022_probe(struct i2c_client *client, |
796 | const struct i2c_device_id *did) | |
7397bfbe GL |
797 | { |
798 | struct mt9v022 *mt9v022; | |
40e2e092 | 799 | struct soc_camera_device *icd = client->dev.platform_data; |
7397bfbe | 800 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
40e2e092 | 801 | struct soc_camera_link *icl; |
7397bfbe GL |
802 | int ret; |
803 | ||
40e2e092 GL |
804 | if (!icd) { |
805 | dev_err(&client->dev, "MT9V022: missing soc-camera data!\n"); | |
806 | return -EINVAL; | |
807 | } | |
808 | ||
809 | icl = to_soc_camera_link(icd); | |
7397bfbe GL |
810 | if (!icl) { |
811 | dev_err(&client->dev, "MT9V022 driver needs platform data\n"); | |
812 | return -EINVAL; | |
813 | } | |
814 | ||
815 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { | |
816 | dev_warn(&adapter->dev, | |
817 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); | |
818 | return -EIO; | |
819 | } | |
820 | ||
821 | mt9v022 = kzalloc(sizeof(struct mt9v022), GFP_KERNEL); | |
822 | if (!mt9v022) | |
823 | return -ENOMEM; | |
824 | ||
979ea1dd GL |
825 | v4l2_i2c_subdev_init(&mt9v022->subdev, client, &mt9v022_subdev_ops); |
826 | ||
7397bfbe | 827 | mt9v022->chip_control = MT9V022_CHIP_CONTROL_DEFAULT; |
7397bfbe | 828 | |
a0705b07 | 829 | icd->ops = &mt9v022_ops; |
a0705b07 | 830 | icd->y_skip_top = 1; |
7397bfbe | 831 | |
6a6c8786 GL |
832 | mt9v022->rect.left = MT9V022_COLUMN_SKIP; |
833 | mt9v022->rect.top = MT9V022_ROW_SKIP; | |
834 | mt9v022->rect.width = MT9V022_MAX_WIDTH; | |
835 | mt9v022->rect.height = MT9V022_MAX_HEIGHT; | |
836 | ||
40e2e092 GL |
837 | ret = mt9v022_video_probe(icd, client); |
838 | if (ret) { | |
839 | icd->ops = NULL; | |
840 | i2c_set_clientdata(client, NULL); | |
841 | kfree(mt9v022); | |
842 | } | |
7397bfbe | 843 | |
7397bfbe GL |
844 | return ret; |
845 | } | |
846 | ||
847 | static int mt9v022_remove(struct i2c_client *client) | |
848 | { | |
979ea1dd | 849 | struct mt9v022 *mt9v022 = to_mt9v022(client); |
40e2e092 | 850 | struct soc_camera_device *icd = client->dev.platform_data; |
7397bfbe | 851 | |
40e2e092 GL |
852 | icd->ops = NULL; |
853 | mt9v022_video_remove(icd); | |
854 | i2c_set_clientdata(client, NULL); | |
855 | client->driver = NULL; | |
7397bfbe GL |
856 | kfree(mt9v022); |
857 | ||
858 | return 0; | |
859 | } | |
3760f736 JD |
860 | static const struct i2c_device_id mt9v022_id[] = { |
861 | { "mt9v022", 0 }, | |
862 | { } | |
863 | }; | |
864 | MODULE_DEVICE_TABLE(i2c, mt9v022_id); | |
865 | ||
7397bfbe GL |
866 | static struct i2c_driver mt9v022_i2c_driver = { |
867 | .driver = { | |
868 | .name = "mt9v022", | |
869 | }, | |
870 | .probe = mt9v022_probe, | |
871 | .remove = mt9v022_remove, | |
3760f736 | 872 | .id_table = mt9v022_id, |
7397bfbe GL |
873 | }; |
874 | ||
875 | static int __init mt9v022_mod_init(void) | |
876 | { | |
877 | return i2c_add_driver(&mt9v022_i2c_driver); | |
878 | } | |
879 | ||
880 | static void __exit mt9v022_mod_exit(void) | |
881 | { | |
882 | i2c_del_driver(&mt9v022_i2c_driver); | |
883 | } | |
884 | ||
885 | module_init(mt9v022_mod_init); | |
886 | module_exit(mt9v022_mod_exit); | |
887 | ||
888 | MODULE_DESCRIPTION("Micron MT9V022 Camera driver"); | |
889 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); | |
890 | MODULE_LICENSE("GPL"); |