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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 | #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 | #define JPG_FMT(_name, _depth, _fourcc) \ | |
132 | COL_FMT(_name, _depth, _fourcc, V4L2_COLORSPACE_JPEG) | |
133 | ||
134 | static const struct soc_camera_data_format mt9m111_colour_formats[] = { | |
135 | JPG_FMT("CbYCrY 16 bit", 16, V4L2_PIX_FMT_UYVY), | |
136 | JPG_FMT("CrYCbY 16 bit", 16, V4L2_PIX_FMT_VYUY), | |
137 | JPG_FMT("YCbYCr 16 bit", 16, V4L2_PIX_FMT_YUYV), | |
138 | JPG_FMT("YCrYCb 16 bit", 16, V4L2_PIX_FMT_YVYU), | |
139 | RGB_FMT("RGB 565", 16, V4L2_PIX_FMT_RGB565), | |
140 | RGB_FMT("RGB 555", 16, V4L2_PIX_FMT_RGB555), | |
141 | RGB_FMT("Bayer (sRGB) 10 bit", 10, V4L2_PIX_FMT_SBGGR16), | |
142 | RGB_FMT("Bayer (sRGB) 8 bit", 8, V4L2_PIX_FMT_SBGGR8), | |
143 | }; | |
144 | ||
145 | enum mt9m111_context { | |
146 | HIGHPOWER = 0, | |
147 | LOWPOWER, | |
148 | }; | |
149 | ||
150 | struct mt9m111 { | |
151 | struct v4l2_subdev subdev; | |
152 | int model; /* V4L2_IDENT_MT9M11x* codes from v4l2-chip-ident.h */ | |
153 | enum mt9m111_context context; | |
154 | struct v4l2_rect rect; | |
155 | u32 pixfmt; | |
156 | unsigned char autoexposure; | |
157 | unsigned char datawidth; | |
158 | unsigned int powered:1; | |
159 | unsigned int hflip:1; | |
160 | unsigned int vflip:1; | |
161 | unsigned int swap_rgb_even_odd:1; | |
162 | unsigned int swap_rgb_red_blue:1; | |
163 | unsigned int swap_yuv_y_chromas:1; | |
164 | unsigned int swap_yuv_cb_cr:1; | |
165 | unsigned int autowhitebalance:1; | |
166 | }; | |
167 | ||
168 | static struct mt9m111 *to_mt9m111(const struct i2c_client *client) | |
169 | { | |
170 | return container_of(i2c_get_clientdata(client), struct mt9m111, subdev); | |
171 | } | |
172 | ||
173 | static int reg_page_map_set(struct i2c_client *client, const u16 reg) | |
174 | { | |
175 | int ret; | |
176 | u16 page; | |
177 | static int lastpage = -1; /* PageMap cache value */ | |
178 | ||
179 | page = (reg >> 8); | |
180 | if (page == lastpage) | |
181 | return 0; | |
182 | if (page > 2) | |
183 | return -EINVAL; | |
184 | ||
185 | ret = i2c_smbus_write_word_data(client, MT9M111_PAGE_MAP, swab16(page)); | |
186 | if (!ret) | |
187 | lastpage = page; | |
188 | return ret; | |
189 | } | |
190 | ||
191 | static int mt9m111_reg_read(struct i2c_client *client, const u16 reg) | |
192 | { | |
193 | int ret; | |
194 | ||
195 | ret = reg_page_map_set(client, reg); | |
196 | if (!ret) | |
197 | ret = swab16(i2c_smbus_read_word_data(client, (reg & 0xff))); | |
198 | ||
199 | dev_dbg(&client->dev, "read reg.%03x -> %04x\n", reg, ret); | |
200 | return ret; | |
201 | } | |
202 | ||
203 | static int mt9m111_reg_write(struct i2c_client *client, const u16 reg, | |
204 | const u16 data) | |
205 | { | |
206 | int ret; | |
207 | ||
208 | ret = reg_page_map_set(client, reg); | |
209 | if (!ret) | |
210 | ret = i2c_smbus_write_word_data(client, reg & 0xff, | |
211 | swab16(data)); | |
212 | dev_dbg(&client->dev, "write reg.%03x = %04x -> %d\n", reg, data, ret); | |
213 | return ret; | |
214 | } | |
215 | ||
216 | static int mt9m111_reg_set(struct i2c_client *client, const u16 reg, | |
217 | const u16 data) | |
218 | { | |
219 | int ret; | |
220 | ||
221 | ret = mt9m111_reg_read(client, reg); | |
222 | if (ret >= 0) | |
223 | ret = mt9m111_reg_write(client, reg, ret | data); | |
224 | return ret; | |
225 | } | |
226 | ||
227 | static int mt9m111_reg_clear(struct i2c_client *client, const u16 reg, | |
228 | const u16 data) | |
229 | { | |
230 | int ret; | |
231 | ||
232 | ret = mt9m111_reg_read(client, reg); | |
233 | return mt9m111_reg_write(client, reg, ret & ~data); | |
234 | } | |
235 | ||
236 | static int mt9m111_set_context(struct i2c_client *client, | |
237 | enum mt9m111_context ctxt) | |
238 | { | |
239 | int valB = MT9M111_CTXT_CTRL_RESTART | MT9M111_CTXT_CTRL_DEFECTCOR_B | |
240 | | MT9M111_CTXT_CTRL_RESIZE_B | MT9M111_CTXT_CTRL_CTRL2_B | |
241 | | MT9M111_CTXT_CTRL_GAMMA_B | MT9M111_CTXT_CTRL_READ_MODE_B | |
242 | | MT9M111_CTXT_CTRL_VBLANK_SEL_B | |
243 | | MT9M111_CTXT_CTRL_HBLANK_SEL_B; | |
244 | int valA = MT9M111_CTXT_CTRL_RESTART; | |
245 | ||
246 | if (ctxt == HIGHPOWER) | |
247 | return reg_write(CONTEXT_CONTROL, valB); | |
248 | else | |
249 | return reg_write(CONTEXT_CONTROL, valA); | |
250 | } | |
251 | ||
252 | static int mt9m111_setup_rect(struct i2c_client *client, | |
253 | struct v4l2_rect *rect) | |
254 | { | |
255 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
256 | int ret, is_raw_format; | |
257 | int width = rect->width; | |
258 | int height = rect->height; | |
259 | ||
260 | if ((mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR8) | |
261 | || (mt9m111->pixfmt == V4L2_PIX_FMT_SBGGR16)) | |
262 | is_raw_format = 1; | |
263 | else | |
264 | is_raw_format = 0; | |
265 | ||
266 | ret = reg_write(COLUMN_START, rect->left); | |
267 | if (!ret) | |
268 | ret = reg_write(ROW_START, rect->top); | |
269 | ||
270 | if (is_raw_format) { | |
271 | if (!ret) | |
272 | ret = reg_write(WINDOW_WIDTH, width); | |
273 | if (!ret) | |
274 | ret = reg_write(WINDOW_HEIGHT, height); | |
275 | } else { | |
276 | if (!ret) | |
277 | ret = reg_write(REDUCER_XZOOM_B, MT9M111_MAX_WIDTH); | |
278 | if (!ret) | |
279 | ret = reg_write(REDUCER_YZOOM_B, MT9M111_MAX_HEIGHT); | |
280 | if (!ret) | |
281 | ret = reg_write(REDUCER_XSIZE_B, width); | |
282 | if (!ret) | |
283 | ret = reg_write(REDUCER_YSIZE_B, height); | |
284 | if (!ret) | |
285 | ret = reg_write(REDUCER_XZOOM_A, MT9M111_MAX_WIDTH); | |
286 | if (!ret) | |
287 | ret = reg_write(REDUCER_YZOOM_A, MT9M111_MAX_HEIGHT); | |
288 | if (!ret) | |
289 | ret = reg_write(REDUCER_XSIZE_A, width); | |
290 | if (!ret) | |
291 | ret = reg_write(REDUCER_YSIZE_A, height); | |
292 | } | |
293 | ||
294 | return ret; | |
295 | } | |
296 | ||
297 | static int mt9m111_setup_pixfmt(struct i2c_client *client, u16 outfmt) | |
298 | { | |
299 | int ret; | |
300 | ||
301 | ret = reg_write(OUTPUT_FORMAT_CTRL2_A, outfmt); | |
302 | if (!ret) | |
303 | ret = reg_write(OUTPUT_FORMAT_CTRL2_B, outfmt); | |
304 | return ret; | |
305 | } | |
306 | ||
307 | static int mt9m111_setfmt_bayer8(struct i2c_client *client) | |
308 | { | |
309 | return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_PROCESSED_BAYER); | |
310 | } | |
311 | ||
312 | static int mt9m111_setfmt_bayer10(struct i2c_client *client) | |
313 | { | |
314 | return mt9m111_setup_pixfmt(client, MT9M111_OUTFMT_BYPASS_IFP); | |
315 | } | |
316 | ||
317 | static int mt9m111_setfmt_rgb565(struct i2c_client *client) | |
318 | { | |
319 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
320 | int val = 0; | |
321 | ||
322 | if (mt9m111->swap_rgb_red_blue) | |
323 | val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr; | |
324 | if (mt9m111->swap_rgb_even_odd) | |
325 | val |= MT9M111_OUTFMT_SWAP_RGB_EVEN; | |
326 | val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB565; | |
327 | ||
328 | return mt9m111_setup_pixfmt(client, val); | |
329 | } | |
330 | ||
331 | static int mt9m111_setfmt_rgb555(struct i2c_client *client) | |
332 | { | |
333 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
334 | int val = 0; | |
335 | ||
336 | if (mt9m111->swap_rgb_red_blue) | |
337 | val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr; | |
338 | if (mt9m111->swap_rgb_even_odd) | |
339 | val |= MT9M111_OUTFMT_SWAP_RGB_EVEN; | |
340 | val |= MT9M111_OUTFMT_RGB | MT9M111_OUTFMT_RGB555; | |
341 | ||
342 | return mt9m111_setup_pixfmt(client, val); | |
343 | } | |
344 | ||
345 | static int mt9m111_setfmt_yuv(struct i2c_client *client) | |
346 | { | |
347 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
348 | int val = 0; | |
349 | ||
350 | if (mt9m111->swap_yuv_cb_cr) | |
351 | val |= MT9M111_OUTFMT_SWAP_YCbCr_Cb_Cr; | |
352 | if (mt9m111->swap_yuv_y_chromas) | |
353 | val |= MT9M111_OUTFMT_SWAP_YCbCr_C_Y; | |
354 | ||
355 | return mt9m111_setup_pixfmt(client, val); | |
356 | } | |
357 | ||
358 | static int mt9m111_enable(struct i2c_client *client) | |
359 | { | |
360 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
361 | int ret; | |
362 | ||
363 | ret = reg_set(RESET, MT9M111_RESET_CHIP_ENABLE); | |
364 | if (!ret) | |
365 | mt9m111->powered = 1; | |
366 | return ret; | |
367 | } | |
368 | ||
369 | static int mt9m111_reset(struct i2c_client *client) | |
370 | { | |
371 | int ret; | |
372 | ||
373 | ret = reg_set(RESET, MT9M111_RESET_RESET_MODE); | |
374 | if (!ret) | |
375 | ret = reg_set(RESET, MT9M111_RESET_RESET_SOC); | |
376 | if (!ret) | |
377 | ret = reg_clear(RESET, MT9M111_RESET_RESET_MODE | |
378 | | MT9M111_RESET_RESET_SOC); | |
379 | ||
380 | return ret; | |
381 | } | |
382 | ||
383 | static unsigned long mt9m111_query_bus_param(struct soc_camera_device *icd) | |
384 | { | |
385 | struct soc_camera_link *icl = to_soc_camera_link(icd); | |
386 | unsigned long flags = SOCAM_MASTER | SOCAM_PCLK_SAMPLE_RISING | | |
387 | SOCAM_HSYNC_ACTIVE_HIGH | SOCAM_VSYNC_ACTIVE_HIGH | | |
388 | SOCAM_DATA_ACTIVE_HIGH | SOCAM_DATAWIDTH_8; | |
389 | ||
390 | return soc_camera_apply_sensor_flags(icl, flags); | |
391 | } | |
392 | ||
393 | static int mt9m111_set_bus_param(struct soc_camera_device *icd, unsigned long f) | |
394 | { | |
395 | return 0; | |
396 | } | |
397 | ||
398 | static int mt9m111_set_crop(struct soc_camera_device *icd, | |
399 | struct v4l2_rect *rect) | |
400 | { | |
401 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); | |
402 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
403 | int ret; | |
404 | ||
405 | dev_dbg(&icd->dev, "%s left=%d, top=%d, width=%d, height=%d\n", | |
406 | __func__, rect->left, rect->top, rect->width, | |
407 | rect->height); | |
408 | ||
409 | ret = mt9m111_setup_rect(client, rect); | |
410 | if (!ret) | |
411 | mt9m111->rect = *rect; | |
412 | return ret; | |
413 | } | |
414 | ||
415 | static int mt9m111_set_pixfmt(struct i2c_client *client, u32 pixfmt) | |
416 | { | |
417 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
418 | int ret; | |
419 | ||
420 | switch (pixfmt) { | |
421 | case V4L2_PIX_FMT_SBGGR8: | |
422 | ret = mt9m111_setfmt_bayer8(client); | |
423 | break; | |
424 | case V4L2_PIX_FMT_SBGGR16: | |
425 | ret = mt9m111_setfmt_bayer10(client); | |
426 | break; | |
427 | case V4L2_PIX_FMT_RGB555: | |
428 | ret = mt9m111_setfmt_rgb555(client); | |
429 | break; | |
430 | case V4L2_PIX_FMT_RGB565: | |
431 | ret = mt9m111_setfmt_rgb565(client); | |
432 | break; | |
433 | case V4L2_PIX_FMT_UYVY: | |
434 | mt9m111->swap_yuv_y_chromas = 0; | |
435 | mt9m111->swap_yuv_cb_cr = 0; | |
436 | ret = mt9m111_setfmt_yuv(client); | |
437 | break; | |
438 | case V4L2_PIX_FMT_VYUY: | |
439 | mt9m111->swap_yuv_y_chromas = 0; | |
440 | mt9m111->swap_yuv_cb_cr = 1; | |
441 | ret = mt9m111_setfmt_yuv(client); | |
442 | break; | |
443 | case V4L2_PIX_FMT_YUYV: | |
444 | mt9m111->swap_yuv_y_chromas = 1; | |
445 | mt9m111->swap_yuv_cb_cr = 0; | |
446 | ret = mt9m111_setfmt_yuv(client); | |
447 | break; | |
448 | case V4L2_PIX_FMT_YVYU: | |
449 | mt9m111->swap_yuv_y_chromas = 1; | |
450 | mt9m111->swap_yuv_cb_cr = 1; | |
451 | ret = mt9m111_setfmt_yuv(client); | |
452 | break; | |
453 | default: | |
454 | dev_err(&client->dev, "Pixel format not handled : %x\n", pixfmt); | |
455 | ret = -EINVAL; | |
456 | } | |
457 | ||
458 | if (!ret) | |
459 | mt9m111->pixfmt = pixfmt; | |
460 | ||
461 | return ret; | |
462 | } | |
463 | ||
464 | static int mt9m111_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) | |
465 | { | |
466 | struct i2c_client *client = sd->priv; | |
467 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
468 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
469 | struct v4l2_rect rect = { | |
470 | .left = mt9m111->rect.left, | |
471 | .top = mt9m111->rect.top, | |
472 | .width = pix->width, | |
473 | .height = pix->height, | |
474 | }; | |
475 | int ret; | |
476 | ||
477 | dev_dbg(&client->dev, "%s fmt=%x left=%d, top=%d, width=%d, height=%d\n", | |
478 | __func__, pix->pixelformat, rect.left, rect.top, rect.width, | |
479 | rect.height); | |
480 | ||
481 | ret = mt9m111_setup_rect(client, &rect); | |
482 | if (!ret) | |
483 | ret = mt9m111_set_pixfmt(client, pix->pixelformat); | |
484 | if (!ret) | |
485 | mt9m111->rect = rect; | |
486 | return ret; | |
487 | } | |
488 | ||
489 | static int mt9m111_try_fmt(struct v4l2_subdev *sd, struct v4l2_format *f) | |
490 | { | |
491 | struct v4l2_pix_format *pix = &f->fmt.pix; | |
492 | ||
493 | if (pix->height > MT9M111_MAX_HEIGHT) | |
494 | pix->height = MT9M111_MAX_HEIGHT; | |
495 | if (pix->width > MT9M111_MAX_WIDTH) | |
496 | pix->width = MT9M111_MAX_WIDTH; | |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
501 | static int mt9m111_g_chip_ident(struct v4l2_subdev *sd, | |
502 | struct v4l2_dbg_chip_ident *id) | |
503 | { | |
504 | struct i2c_client *client = sd->priv; | |
505 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
506 | ||
507 | if (id->match.type != V4L2_CHIP_MATCH_I2C_ADDR) | |
508 | return -EINVAL; | |
509 | ||
510 | if (id->match.addr != client->addr) | |
511 | return -ENODEV; | |
512 | ||
513 | id->ident = mt9m111->model; | |
514 | id->revision = 0; | |
515 | ||
516 | return 0; | |
517 | } | |
518 | ||
519 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
520 | static int mt9m111_g_register(struct v4l2_subdev *sd, | |
521 | struct v4l2_dbg_register *reg) | |
522 | { | |
523 | struct i2c_client *client = sd->priv; | |
524 | int val; | |
525 | ||
526 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff) | |
527 | return -EINVAL; | |
528 | if (reg->match.addr != client->addr) | |
529 | return -ENODEV; | |
530 | ||
531 | val = mt9m111_reg_read(client, reg->reg); | |
532 | reg->size = 2; | |
533 | reg->val = (u64)val; | |
534 | ||
535 | if (reg->val > 0xffff) | |
536 | return -EIO; | |
537 | ||
538 | return 0; | |
539 | } | |
540 | ||
541 | static int mt9m111_s_register(struct v4l2_subdev *sd, | |
542 | struct v4l2_dbg_register *reg) | |
543 | { | |
544 | struct i2c_client *client = sd->priv; | |
545 | ||
546 | if (reg->match.type != V4L2_CHIP_MATCH_I2C_ADDR || reg->reg > 0x2ff) | |
547 | return -EINVAL; | |
548 | ||
549 | if (reg->match.addr != client->addr) | |
550 | return -ENODEV; | |
551 | ||
552 | if (mt9m111_reg_write(client, reg->reg, reg->val) < 0) | |
553 | return -EIO; | |
554 | ||
555 | return 0; | |
556 | } | |
557 | #endif | |
558 | ||
559 | static const struct v4l2_queryctrl mt9m111_controls[] = { | |
560 | { | |
561 | .id = V4L2_CID_VFLIP, | |
562 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
563 | .name = "Flip Verticaly", | |
564 | .minimum = 0, | |
565 | .maximum = 1, | |
566 | .step = 1, | |
567 | .default_value = 0, | |
568 | }, { | |
569 | .id = V4L2_CID_HFLIP, | |
570 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
571 | .name = "Flip Horizontaly", | |
572 | .minimum = 0, | |
573 | .maximum = 1, | |
574 | .step = 1, | |
575 | .default_value = 0, | |
576 | }, { /* gain = 1/32*val (=>gain=1 if val==32) */ | |
577 | .id = V4L2_CID_GAIN, | |
578 | .type = V4L2_CTRL_TYPE_INTEGER, | |
579 | .name = "Gain", | |
580 | .minimum = 0, | |
581 | .maximum = 63 * 2 * 2, | |
582 | .step = 1, | |
583 | .default_value = 32, | |
584 | .flags = V4L2_CTRL_FLAG_SLIDER, | |
585 | }, { | |
586 | .id = V4L2_CID_EXPOSURE_AUTO, | |
587 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
588 | .name = "Auto Exposure", | |
589 | .minimum = 0, | |
590 | .maximum = 1, | |
591 | .step = 1, | |
592 | .default_value = 1, | |
593 | } | |
594 | }; | |
595 | ||
596 | static int mt9m111_resume(struct soc_camera_device *icd); | |
597 | static int mt9m111_init(struct soc_camera_device *icd); | |
598 | static int mt9m111_release(struct soc_camera_device *icd); | |
599 | ||
600 | static struct soc_camera_ops mt9m111_ops = { | |
601 | .init = mt9m111_init, | |
602 | .resume = mt9m111_resume, | |
603 | .release = mt9m111_release, | |
604 | .set_crop = mt9m111_set_crop, | |
605 | .query_bus_param = mt9m111_query_bus_param, | |
606 | .set_bus_param = mt9m111_set_bus_param, | |
607 | .controls = mt9m111_controls, | |
608 | .num_controls = ARRAY_SIZE(mt9m111_controls), | |
609 | }; | |
610 | ||
611 | static int mt9m111_set_flip(struct i2c_client *client, int flip, int mask) | |
612 | { | |
613 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
614 | int ret; | |
615 | ||
616 | if (mt9m111->context == HIGHPOWER) { | |
617 | if (flip) | |
618 | ret = reg_set(READ_MODE_B, mask); | |
619 | else | |
620 | ret = reg_clear(READ_MODE_B, mask); | |
621 | } else { | |
622 | if (flip) | |
623 | ret = reg_set(READ_MODE_A, mask); | |
624 | else | |
625 | ret = reg_clear(READ_MODE_A, mask); | |
626 | } | |
627 | ||
628 | return ret; | |
629 | } | |
630 | ||
631 | static int mt9m111_get_global_gain(struct i2c_client *client) | |
632 | { | |
633 | int data; | |
634 | ||
635 | data = reg_read(GLOBAL_GAIN); | |
636 | if (data >= 0) | |
637 | return (data & 0x2f) * (1 << ((data >> 10) & 1)) * | |
638 | (1 << ((data >> 9) & 1)); | |
639 | return data; | |
640 | } | |
641 | ||
642 | static int mt9m111_set_global_gain(struct i2c_client *client, int gain) | |
643 | { | |
644 | struct soc_camera_device *icd = client->dev.platform_data; | |
645 | u16 val; | |
646 | ||
647 | if (gain > 63 * 2 * 2) | |
648 | return -EINVAL; | |
649 | ||
650 | icd->gain = gain; | |
651 | if ((gain >= 64 * 2) && (gain < 63 * 2 * 2)) | |
652 | val = (1 << 10) | (1 << 9) | (gain / 4); | |
653 | else if ((gain >= 64) && (gain < 64 * 2)) | |
654 | val = (1 << 9) | (gain / 2); | |
655 | else | |
656 | val = gain; | |
657 | ||
658 | return reg_write(GLOBAL_GAIN, val); | |
659 | } | |
660 | ||
661 | static int mt9m111_set_autoexposure(struct i2c_client *client, int on) | |
662 | { | |
663 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
664 | int ret; | |
665 | ||
666 | if (on) | |
667 | ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN); | |
668 | else | |
669 | ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOEXPO_EN); | |
670 | ||
671 | if (!ret) | |
672 | mt9m111->autoexposure = on; | |
673 | ||
674 | return ret; | |
675 | } | |
676 | ||
677 | static int mt9m111_set_autowhitebalance(struct i2c_client *client, int on) | |
678 | { | |
679 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
680 | int ret; | |
681 | ||
682 | if (on) | |
683 | ret = reg_set(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN); | |
684 | else | |
685 | ret = reg_clear(OPER_MODE_CTRL, MT9M111_OPMODE_AUTOWHITEBAL_EN); | |
686 | ||
687 | if (!ret) | |
688 | mt9m111->autowhitebalance = on; | |
689 | ||
690 | return ret; | |
691 | } | |
692 | ||
693 | static int mt9m111_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | |
694 | { | |
695 | struct i2c_client *client = sd->priv; | |
696 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
697 | int data; | |
698 | ||
699 | switch (ctrl->id) { | |
700 | case V4L2_CID_VFLIP: | |
701 | if (mt9m111->context == HIGHPOWER) | |
702 | data = reg_read(READ_MODE_B); | |
703 | else | |
704 | data = reg_read(READ_MODE_A); | |
705 | ||
706 | if (data < 0) | |
707 | return -EIO; | |
708 | ctrl->value = !!(data & MT9M111_RMB_MIRROR_ROWS); | |
709 | break; | |
710 | case V4L2_CID_HFLIP: | |
711 | if (mt9m111->context == HIGHPOWER) | |
712 | data = reg_read(READ_MODE_B); | |
713 | else | |
714 | data = reg_read(READ_MODE_A); | |
715 | ||
716 | if (data < 0) | |
717 | return -EIO; | |
718 | ctrl->value = !!(data & MT9M111_RMB_MIRROR_COLS); | |
719 | break; | |
720 | case V4L2_CID_GAIN: | |
721 | data = mt9m111_get_global_gain(client); | |
722 | if (data < 0) | |
723 | return data; | |
724 | ctrl->value = data; | |
725 | break; | |
726 | case V4L2_CID_EXPOSURE_AUTO: | |
727 | ctrl->value = mt9m111->autoexposure; | |
728 | break; | |
729 | case V4L2_CID_AUTO_WHITE_BALANCE: | |
730 | ctrl->value = mt9m111->autowhitebalance; | |
731 | break; | |
732 | } | |
733 | return 0; | |
734 | } | |
735 | ||
736 | static int mt9m111_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) | |
737 | { | |
738 | struct i2c_client *client = sd->priv; | |
739 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
740 | const struct v4l2_queryctrl *qctrl; | |
741 | int ret; | |
742 | ||
743 | qctrl = soc_camera_find_qctrl(&mt9m111_ops, ctrl->id); | |
744 | if (!qctrl) | |
745 | return -EINVAL; | |
746 | ||
747 | switch (ctrl->id) { | |
748 | case V4L2_CID_VFLIP: | |
749 | mt9m111->vflip = ctrl->value; | |
750 | ret = mt9m111_set_flip(client, ctrl->value, | |
751 | MT9M111_RMB_MIRROR_ROWS); | |
752 | break; | |
753 | case V4L2_CID_HFLIP: | |
754 | mt9m111->hflip = ctrl->value; | |
755 | ret = mt9m111_set_flip(client, ctrl->value, | |
756 | MT9M111_RMB_MIRROR_COLS); | |
757 | break; | |
758 | case V4L2_CID_GAIN: | |
759 | ret = mt9m111_set_global_gain(client, ctrl->value); | |
760 | break; | |
761 | case V4L2_CID_EXPOSURE_AUTO: | |
762 | ret = mt9m111_set_autoexposure(client, ctrl->value); | |
763 | break; | |
764 | case V4L2_CID_AUTO_WHITE_BALANCE: | |
765 | ret = mt9m111_set_autowhitebalance(client, ctrl->value); | |
766 | break; | |
767 | default: | |
768 | ret = -EINVAL; | |
769 | } | |
770 | ||
771 | return ret; | |
772 | } | |
773 | ||
774 | static int mt9m111_restore_state(struct i2c_client *client) | |
775 | { | |
776 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
777 | struct soc_camera_device *icd = client->dev.platform_data; | |
778 | ||
779 | mt9m111_set_context(client, mt9m111->context); | |
780 | mt9m111_set_pixfmt(client, mt9m111->pixfmt); | |
781 | mt9m111_setup_rect(client, &mt9m111->rect); | |
782 | mt9m111_set_flip(client, mt9m111->hflip, MT9M111_RMB_MIRROR_COLS); | |
783 | mt9m111_set_flip(client, mt9m111->vflip, MT9M111_RMB_MIRROR_ROWS); | |
784 | mt9m111_set_global_gain(client, icd->gain); | |
785 | mt9m111_set_autoexposure(client, mt9m111->autoexposure); | |
786 | mt9m111_set_autowhitebalance(client, mt9m111->autowhitebalance); | |
787 | return 0; | |
788 | } | |
789 | ||
790 | static int mt9m111_resume(struct soc_camera_device *icd) | |
791 | { | |
792 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); | |
793 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
794 | int ret = 0; | |
795 | ||
796 | if (mt9m111->powered) { | |
797 | ret = mt9m111_enable(client); | |
798 | if (!ret) | |
799 | ret = mt9m111_reset(client); | |
800 | if (!ret) | |
801 | ret = mt9m111_restore_state(client); | |
802 | } | |
803 | return ret; | |
804 | } | |
805 | ||
806 | static int mt9m111_init(struct soc_camera_device *icd) | |
807 | { | |
808 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); | |
809 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
810 | int ret; | |
811 | ||
812 | mt9m111->context = HIGHPOWER; | |
813 | ret = mt9m111_enable(client); | |
814 | if (!ret) | |
815 | ret = mt9m111_reset(client); | |
816 | if (!ret) | |
817 | ret = mt9m111_set_context(client, mt9m111->context); | |
818 | if (!ret) | |
819 | ret = mt9m111_set_autoexposure(client, mt9m111->autoexposure); | |
820 | if (ret) | |
821 | dev_err(&icd->dev, "mt9m11x init failed: %d\n", ret); | |
822 | return ret; | |
823 | } | |
824 | ||
825 | static int mt9m111_release(struct soc_camera_device *icd) | |
826 | { | |
827 | struct i2c_client *client = to_i2c_client(to_soc_camera_control(icd)); | |
828 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
829 | int ret; | |
830 | ||
831 | ret = reg_clear(RESET, MT9M111_RESET_CHIP_ENABLE); | |
832 | if (!ret) | |
833 | mt9m111->powered = 0; | |
834 | ||
835 | if (ret < 0) | |
836 | dev_err(&icd->dev, "mt9m11x release failed: %d\n", ret); | |
837 | ||
838 | return ret; | |
839 | } | |
840 | ||
841 | /* | |
842 | * Interface active, can use i2c. If it fails, it can indeed mean, that | |
843 | * this wasn't our capture interface, so, we wait for the right one | |
844 | */ | |
845 | static int mt9m111_video_probe(struct soc_camera_device *icd, | |
846 | struct i2c_client *client) | |
847 | { | |
848 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
849 | s32 data; | |
850 | int ret; | |
851 | ||
852 | /* | |
853 | * We must have a parent by now. And it cannot be a wrong one. | |
854 | * So this entire test is completely redundant. | |
855 | */ | |
856 | if (!icd->dev.parent || | |
857 | to_soc_camera_host(icd->dev.parent)->nr != icd->iface) | |
858 | return -ENODEV; | |
859 | ||
860 | ret = mt9m111_enable(client); | |
861 | if (ret) | |
862 | goto ei2c; | |
863 | ret = mt9m111_reset(client); | |
864 | if (ret) | |
865 | goto ei2c; | |
866 | ||
867 | data = reg_read(CHIP_VERSION); | |
868 | ||
869 | switch (data) { | |
870 | case 0x143a: /* MT9M111 */ | |
871 | mt9m111->model = V4L2_IDENT_MT9M111; | |
872 | break; | |
873 | case 0x148c: /* MT9M112 */ | |
874 | mt9m111->model = V4L2_IDENT_MT9M112; | |
875 | break; | |
876 | default: | |
877 | ret = -ENODEV; | |
878 | dev_err(&icd->dev, | |
879 | "No MT9M11x chip detected, register read %x\n", data); | |
880 | goto ei2c; | |
881 | } | |
882 | ||
883 | icd->formats = mt9m111_colour_formats; | |
884 | icd->num_formats = ARRAY_SIZE(mt9m111_colour_formats); | |
885 | ||
886 | dev_info(&icd->dev, "Detected a MT9M11x chip ID %x\n", data); | |
887 | ||
888 | mt9m111->autoexposure = 1; | |
889 | mt9m111->autowhitebalance = 1; | |
890 | ||
891 | mt9m111->swap_rgb_even_odd = 1; | |
892 | mt9m111->swap_rgb_red_blue = 1; | |
893 | ||
894 | ei2c: | |
895 | return ret; | |
896 | } | |
897 | ||
898 | static struct v4l2_subdev_core_ops mt9m111_subdev_core_ops = { | |
899 | .g_ctrl = mt9m111_g_ctrl, | |
900 | .s_ctrl = mt9m111_s_ctrl, | |
901 | .g_chip_ident = mt9m111_g_chip_ident, | |
902 | #ifdef CONFIG_VIDEO_ADV_DEBUG | |
903 | .g_register = mt9m111_g_register, | |
904 | .s_register = mt9m111_s_register, | |
905 | #endif | |
906 | }; | |
907 | ||
908 | static struct v4l2_subdev_video_ops mt9m111_subdev_video_ops = { | |
909 | .s_fmt = mt9m111_s_fmt, | |
910 | .try_fmt = mt9m111_try_fmt, | |
911 | }; | |
912 | ||
913 | static struct v4l2_subdev_ops mt9m111_subdev_ops = { | |
914 | .core = &mt9m111_subdev_core_ops, | |
915 | .video = &mt9m111_subdev_video_ops, | |
916 | }; | |
917 | ||
918 | static int mt9m111_probe(struct i2c_client *client, | |
919 | const struct i2c_device_id *did) | |
920 | { | |
921 | struct mt9m111 *mt9m111; | |
922 | struct soc_camera_device *icd = client->dev.platform_data; | |
923 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); | |
924 | struct soc_camera_link *icl; | |
925 | int ret; | |
926 | ||
927 | if (!icd) { | |
928 | dev_err(&client->dev, "MT9M11x: missing soc-camera data!\n"); | |
929 | return -EINVAL; | |
930 | } | |
931 | ||
932 | icl = to_soc_camera_link(icd); | |
933 | if (!icl) { | |
934 | dev_err(&client->dev, "MT9M11x driver needs platform data\n"); | |
935 | return -EINVAL; | |
936 | } | |
937 | ||
938 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_WORD_DATA)) { | |
939 | dev_warn(&adapter->dev, | |
940 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_WORD\n"); | |
941 | return -EIO; | |
942 | } | |
943 | ||
944 | mt9m111 = kzalloc(sizeof(struct mt9m111), GFP_KERNEL); | |
945 | if (!mt9m111) | |
946 | return -ENOMEM; | |
947 | ||
948 | v4l2_i2c_subdev_init(&mt9m111->subdev, client, &mt9m111_subdev_ops); | |
949 | ||
950 | /* Second stage probe - when a capture adapter is there */ | |
951 | icd->ops = &mt9m111_ops; | |
952 | icd->x_min = MT9M111_MIN_DARK_COLS; | |
953 | icd->y_min = MT9M111_MIN_DARK_ROWS; | |
954 | icd->x_current = icd->x_min; | |
955 | icd->y_current = icd->y_min; | |
956 | icd->width_min = MT9M111_MIN_DARK_ROWS; | |
957 | icd->width_max = MT9M111_MAX_WIDTH; | |
958 | icd->height_min = MT9M111_MIN_DARK_COLS; | |
959 | icd->height_max = MT9M111_MAX_HEIGHT; | |
960 | icd->y_skip_top = 0; | |
961 | ||
962 | ret = mt9m111_video_probe(icd, client); | |
963 | if (ret) { | |
964 | icd->ops = NULL; | |
965 | i2c_set_clientdata(client, NULL); | |
966 | kfree(mt9m111); | |
967 | } | |
968 | ||
969 | return ret; | |
970 | } | |
971 | ||
972 | static int mt9m111_remove(struct i2c_client *client) | |
973 | { | |
974 | struct mt9m111 *mt9m111 = to_mt9m111(client); | |
975 | struct soc_camera_device *icd = client->dev.platform_data; | |
976 | ||
977 | icd->ops = NULL; | |
978 | i2c_set_clientdata(client, NULL); | |
979 | client->driver = NULL; | |
980 | kfree(mt9m111); | |
981 | ||
982 | return 0; | |
983 | } | |
984 | ||
985 | static const struct i2c_device_id mt9m111_id[] = { | |
986 | { "mt9m111", 0 }, | |
987 | { } | |
988 | }; | |
989 | MODULE_DEVICE_TABLE(i2c, mt9m111_id); | |
990 | ||
991 | static struct i2c_driver mt9m111_i2c_driver = { | |
992 | .driver = { | |
993 | .name = "mt9m111", | |
994 | }, | |
995 | .probe = mt9m111_probe, | |
996 | .remove = mt9m111_remove, | |
997 | .id_table = mt9m111_id, | |
998 | }; | |
999 | ||
1000 | static int __init mt9m111_mod_init(void) | |
1001 | { | |
1002 | return i2c_add_driver(&mt9m111_i2c_driver); | |
1003 | } | |
1004 | ||
1005 | static void __exit mt9m111_mod_exit(void) | |
1006 | { | |
1007 | i2c_del_driver(&mt9m111_i2c_driver); | |
1008 | } | |
1009 | ||
1010 | module_init(mt9m111_mod_init); | |
1011 | module_exit(mt9m111_mod_exit); | |
1012 | ||
1013 | MODULE_DESCRIPTION("Micron MT9M111/MT9M112 Camera driver"); | |
1014 | MODULE_AUTHOR("Robert Jarzmik"); | |
1015 | MODULE_LICENSE("GPL"); |