Commit | Line | Data |
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67826235 GL |
1 | /* |
2 | * Driver for IMX074 CMOS Image Sensor from Sony | |
3 | * | |
4 | * Copyright (C) 2010, Guennadi Liakhovetski <g.liakhovetski@gmx.de> | |
5 | * | |
6 | * Partially inspired by the IMX074 driver from the Android / MSM tree | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License version 2 as | |
10 | * published by the Free Software Foundation. | |
11 | */ | |
12 | ||
13 | #include <linux/delay.h> | |
14 | #include <linux/i2c.h> | |
95d20109 | 15 | #include <linux/v4l2-mediabus.h> |
67826235 GL |
16 | #include <linux/slab.h> |
17 | #include <linux/videodev2.h> | |
7a707b89 | 18 | #include <linux/module.h> |
67826235 GL |
19 | |
20 | #include <media/soc_camera.h> | |
ee17608d | 21 | #include <media/v4l2-async.h> |
9aea470b | 22 | #include <media/v4l2-clk.h> |
67826235 | 23 | #include <media/v4l2-subdev.h> |
67826235 GL |
24 | |
25 | /* IMX074 registers */ | |
26 | ||
27 | #define MODE_SELECT 0x0100 | |
28 | #define IMAGE_ORIENTATION 0x0101 | |
29 | #define GROUPED_PARAMETER_HOLD 0x0104 | |
30 | ||
31 | /* Integration Time */ | |
32 | #define COARSE_INTEGRATION_TIME_HI 0x0202 | |
33 | #define COARSE_INTEGRATION_TIME_LO 0x0203 | |
34 | /* Gain */ | |
35 | #define ANALOGUE_GAIN_CODE_GLOBAL_HI 0x0204 | |
36 | #define ANALOGUE_GAIN_CODE_GLOBAL_LO 0x0205 | |
37 | ||
38 | /* PLL registers */ | |
39 | #define PRE_PLL_CLK_DIV 0x0305 | |
40 | #define PLL_MULTIPLIER 0x0307 | |
41 | #define PLSTATIM 0x302b | |
42 | #define VNDMY_ABLMGSHLMT 0x300a | |
43 | #define Y_OPBADDR_START_DI 0x3014 | |
44 | /* mode setting */ | |
45 | #define FRAME_LENGTH_LINES_HI 0x0340 | |
46 | #define FRAME_LENGTH_LINES_LO 0x0341 | |
47 | #define LINE_LENGTH_PCK_HI 0x0342 | |
48 | #define LINE_LENGTH_PCK_LO 0x0343 | |
49 | #define YADDR_START 0x0347 | |
50 | #define YADDR_END 0x034b | |
51 | #define X_OUTPUT_SIZE_MSB 0x034c | |
52 | #define X_OUTPUT_SIZE_LSB 0x034d | |
53 | #define Y_OUTPUT_SIZE_MSB 0x034e | |
54 | #define Y_OUTPUT_SIZE_LSB 0x034f | |
55 | #define X_EVEN_INC 0x0381 | |
56 | #define X_ODD_INC 0x0383 | |
57 | #define Y_EVEN_INC 0x0385 | |
58 | #define Y_ODD_INC 0x0387 | |
59 | ||
60 | #define HMODEADD 0x3001 | |
61 | #define VMODEADD 0x3016 | |
62 | #define VAPPLINE_START 0x3069 | |
63 | #define VAPPLINE_END 0x306b | |
64 | #define SHUTTER 0x3086 | |
65 | #define HADDAVE 0x30e8 | |
66 | #define LANESEL 0x3301 | |
67 | ||
68 | /* IMX074 supported geometry */ | |
69 | #define IMX074_WIDTH 1052 | |
70 | #define IMX074_HEIGHT 780 | |
71 | ||
72 | /* IMX074 has only one fixed colorspace per pixelcode */ | |
73 | struct imx074_datafmt { | |
f5fe58fd | 74 | u32 code; |
67826235 GL |
75 | enum v4l2_colorspace colorspace; |
76 | }; | |
77 | ||
78 | struct imx074 { | |
79 | struct v4l2_subdev subdev; | |
80 | const struct imx074_datafmt *fmt; | |
9aea470b | 81 | struct v4l2_clk *clk; |
67826235 GL |
82 | }; |
83 | ||
84 | static const struct imx074_datafmt imx074_colour_fmts[] = { | |
f5fe58fd | 85 | {MEDIA_BUS_FMT_SBGGR8_1X8, V4L2_COLORSPACE_SRGB}, |
67826235 GL |
86 | }; |
87 | ||
88 | static struct imx074 *to_imx074(const struct i2c_client *client) | |
89 | { | |
90 | return container_of(i2c_get_clientdata(client), struct imx074, subdev); | |
91 | } | |
92 | ||
93 | /* Find a data format by a pixel code in an array */ | |
f5fe58fd | 94 | static const struct imx074_datafmt *imx074_find_datafmt(u32 code) |
67826235 GL |
95 | { |
96 | int i; | |
97 | ||
98 | for (i = 0; i < ARRAY_SIZE(imx074_colour_fmts); i++) | |
99 | if (imx074_colour_fmts[i].code == code) | |
100 | return imx074_colour_fmts + i; | |
101 | ||
102 | return NULL; | |
103 | } | |
104 | ||
105 | static int reg_write(struct i2c_client *client, const u16 addr, const u8 data) | |
106 | { | |
107 | struct i2c_adapter *adap = client->adapter; | |
108 | struct i2c_msg msg; | |
109 | unsigned char tx[3]; | |
110 | int ret; | |
111 | ||
112 | msg.addr = client->addr; | |
113 | msg.buf = tx; | |
114 | msg.len = 3; | |
115 | msg.flags = 0; | |
116 | ||
117 | tx[0] = addr >> 8; | |
118 | tx[1] = addr & 0xff; | |
119 | tx[2] = data; | |
120 | ||
121 | ret = i2c_transfer(adap, &msg, 1); | |
122 | ||
123 | mdelay(2); | |
124 | ||
125 | return ret == 1 ? 0 : -EIO; | |
126 | } | |
127 | ||
128 | static int reg_read(struct i2c_client *client, const u16 addr) | |
129 | { | |
130 | u8 buf[2] = {addr >> 8, addr & 0xff}; | |
131 | int ret; | |
132 | struct i2c_msg msgs[] = { | |
133 | { | |
134 | .addr = client->addr, | |
135 | .flags = 0, | |
136 | .len = 2, | |
137 | .buf = buf, | |
138 | }, { | |
139 | .addr = client->addr, | |
140 | .flags = I2C_M_RD, | |
141 | .len = 2, | |
142 | .buf = buf, | |
143 | }, | |
144 | }; | |
145 | ||
146 | ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); | |
147 | if (ret < 0) { | |
148 | dev_warn(&client->dev, "Reading register %x from %x failed\n", | |
149 | addr, client->addr); | |
150 | return ret; | |
151 | } | |
152 | ||
153 | return buf[0] & 0xff; /* no sign-extension */ | |
154 | } | |
155 | ||
717fd5b4 HV |
156 | static int imx074_set_fmt(struct v4l2_subdev *sd, |
157 | struct v4l2_subdev_pad_config *cfg, | |
158 | struct v4l2_subdev_format *format) | |
67826235 | 159 | { |
717fd5b4 | 160 | struct v4l2_mbus_framefmt *mf = &format->format; |
67826235 | 161 | const struct imx074_datafmt *fmt = imx074_find_datafmt(mf->code); |
717fd5b4 HV |
162 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
163 | struct imx074 *priv = to_imx074(client); | |
164 | ||
165 | if (format->pad) | |
166 | return -EINVAL; | |
67826235 GL |
167 | |
168 | dev_dbg(sd->v4l2_dev->dev, "%s(%u)\n", __func__, mf->code); | |
169 | ||
170 | if (!fmt) { | |
717fd5b4 HV |
171 | /* MIPI CSI could have changed the format, double-check */ |
172 | if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) | |
173 | return -EINVAL; | |
67826235 GL |
174 | mf->code = imx074_colour_fmts[0].code; |
175 | mf->colorspace = imx074_colour_fmts[0].colorspace; | |
176 | } | |
177 | ||
178 | mf->width = IMX074_WIDTH; | |
179 | mf->height = IMX074_HEIGHT; | |
180 | mf->field = V4L2_FIELD_NONE; | |
181 | ||
717fd5b4 HV |
182 | if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE) |
183 | priv->fmt = imx074_find_datafmt(mf->code); | |
184 | else | |
185 | cfg->try_fmt = *mf; | |
67826235 GL |
186 | |
187 | return 0; | |
188 | } | |
189 | ||
da298c6d HV |
190 | static int imx074_get_fmt(struct v4l2_subdev *sd, |
191 | struct v4l2_subdev_pad_config *cfg, | |
192 | struct v4l2_subdev_format *format) | |
67826235 | 193 | { |
da298c6d | 194 | struct v4l2_mbus_framefmt *mf = &format->format; |
67826235 GL |
195 | struct i2c_client *client = v4l2_get_subdevdata(sd); |
196 | struct imx074 *priv = to_imx074(client); | |
197 | ||
198 | const struct imx074_datafmt *fmt = priv->fmt; | |
199 | ||
da298c6d HV |
200 | if (format->pad) |
201 | return -EINVAL; | |
202 | ||
67826235 GL |
203 | mf->code = fmt->code; |
204 | mf->colorspace = fmt->colorspace; | |
205 | mf->width = IMX074_WIDTH; | |
206 | mf->height = IMX074_HEIGHT; | |
207 | mf->field = V4L2_FIELD_NONE; | |
208 | ||
209 | return 0; | |
210 | } | |
211 | ||
10d5509c HV |
212 | static int imx074_get_selection(struct v4l2_subdev *sd, |
213 | struct v4l2_subdev_pad_config *cfg, | |
214 | struct v4l2_subdev_selection *sel) | |
67826235 | 215 | { |
10d5509c HV |
216 | if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE) |
217 | return -EINVAL; | |
67826235 | 218 | |
10d5509c HV |
219 | sel->r.left = 0; |
220 | sel->r.top = 0; | |
221 | sel->r.width = IMX074_WIDTH; | |
222 | sel->r.height = IMX074_HEIGHT; | |
223 | ||
224 | switch (sel->target) { | |
225 | case V4L2_SEL_TGT_CROP_BOUNDS: | |
226 | case V4L2_SEL_TGT_CROP_DEFAULT: | |
227 | case V4L2_SEL_TGT_CROP: | |
228 | return 0; | |
229 | default: | |
230 | return -EINVAL; | |
231 | } | |
67826235 GL |
232 | } |
233 | ||
ebcff5fc HV |
234 | static int imx074_enum_mbus_code(struct v4l2_subdev *sd, |
235 | struct v4l2_subdev_pad_config *cfg, | |
236 | struct v4l2_subdev_mbus_code_enum *code) | |
67826235 | 237 | { |
ebcff5fc HV |
238 | if (code->pad || |
239 | (unsigned int)code->index >= ARRAY_SIZE(imx074_colour_fmts)) | |
67826235 GL |
240 | return -EINVAL; |
241 | ||
ebcff5fc | 242 | code->code = imx074_colour_fmts[code->index].code; |
67826235 GL |
243 | return 0; |
244 | } | |
245 | ||
246 | static int imx074_s_stream(struct v4l2_subdev *sd, int enable) | |
247 | { | |
248 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
249 | ||
250 | /* MODE_SELECT: stream or standby */ | |
251 | return reg_write(client, MODE_SELECT, !!enable); | |
252 | } | |
253 | ||
4ec10bac LP |
254 | static int imx074_s_power(struct v4l2_subdev *sd, int on) |
255 | { | |
256 | struct i2c_client *client = v4l2_get_subdevdata(sd); | |
25a34811 | 257 | struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); |
9aea470b | 258 | struct imx074 *priv = to_imx074(client); |
4ec10bac | 259 | |
9aea470b | 260 | return soc_camera_set_power(&client->dev, ssdd, priv->clk, on); |
4ec10bac LP |
261 | } |
262 | ||
7cd74ffb GL |
263 | static int imx074_g_mbus_config(struct v4l2_subdev *sd, |
264 | struct v4l2_mbus_config *cfg) | |
265 | { | |
266 | cfg->type = V4L2_MBUS_CSI2; | |
267 | cfg->flags = V4L2_MBUS_CSI2_2_LANE | | |
268 | V4L2_MBUS_CSI2_CHANNEL_0 | | |
269 | V4L2_MBUS_CSI2_CONTINUOUS_CLOCK; | |
270 | ||
271 | return 0; | |
272 | } | |
273 | ||
67826235 GL |
274 | static struct v4l2_subdev_video_ops imx074_subdev_video_ops = { |
275 | .s_stream = imx074_s_stream, | |
7cd74ffb | 276 | .g_mbus_config = imx074_g_mbus_config, |
67826235 GL |
277 | }; |
278 | ||
279 | static struct v4l2_subdev_core_ops imx074_subdev_core_ops = { | |
4ec10bac | 280 | .s_power = imx074_s_power, |
67826235 GL |
281 | }; |
282 | ||
ebcff5fc HV |
283 | static const struct v4l2_subdev_pad_ops imx074_subdev_pad_ops = { |
284 | .enum_mbus_code = imx074_enum_mbus_code, | |
10d5509c | 285 | .get_selection = imx074_get_selection, |
da298c6d | 286 | .get_fmt = imx074_get_fmt, |
717fd5b4 | 287 | .set_fmt = imx074_set_fmt, |
ebcff5fc HV |
288 | }; |
289 | ||
67826235 GL |
290 | static struct v4l2_subdev_ops imx074_subdev_ops = { |
291 | .core = &imx074_subdev_core_ops, | |
292 | .video = &imx074_subdev_video_ops, | |
ebcff5fc | 293 | .pad = &imx074_subdev_pad_ops, |
67826235 GL |
294 | }; |
295 | ||
14178aa5 | 296 | static int imx074_video_probe(struct i2c_client *client) |
67826235 | 297 | { |
4bbc6d52 | 298 | struct v4l2_subdev *subdev = i2c_get_clientdata(client); |
67826235 GL |
299 | int ret; |
300 | u16 id; | |
301 | ||
4bbc6d52 LP |
302 | ret = imx074_s_power(subdev, 1); |
303 | if (ret < 0) | |
304 | return ret; | |
305 | ||
67826235 GL |
306 | /* Read sensor Model ID */ |
307 | ret = reg_read(client, 0); | |
308 | if (ret < 0) | |
4bbc6d52 | 309 | goto done; |
67826235 GL |
310 | |
311 | id = ret << 8; | |
312 | ||
313 | ret = reg_read(client, 1); | |
314 | if (ret < 0) | |
4bbc6d52 | 315 | goto done; |
67826235 GL |
316 | |
317 | id |= ret; | |
318 | ||
319 | dev_info(&client->dev, "Chip ID 0x%04x detected\n", id); | |
320 | ||
4bbc6d52 LP |
321 | if (id != 0x74) { |
322 | ret = -ENODEV; | |
323 | goto done; | |
324 | } | |
67826235 GL |
325 | |
326 | /* PLL Setting EXTCLK=24MHz, 22.5times */ | |
327 | reg_write(client, PLL_MULTIPLIER, 0x2D); | |
328 | reg_write(client, PRE_PLL_CLK_DIV, 0x02); | |
329 | reg_write(client, PLSTATIM, 0x4B); | |
330 | ||
331 | /* 2-lane mode */ | |
332 | reg_write(client, 0x3024, 0x00); | |
333 | ||
334 | reg_write(client, IMAGE_ORIENTATION, 0x00); | |
335 | ||
336 | /* select RAW mode: | |
337 | * 0x08+0x08 = top 8 bits | |
338 | * 0x0a+0x08 = compressed 8-bits | |
339 | * 0x0a+0x0a = 10 bits | |
340 | */ | |
341 | reg_write(client, 0x0112, 0x08); | |
342 | reg_write(client, 0x0113, 0x08); | |
343 | ||
344 | /* Base setting for High frame mode */ | |
345 | reg_write(client, VNDMY_ABLMGSHLMT, 0x80); | |
346 | reg_write(client, Y_OPBADDR_START_DI, 0x08); | |
347 | reg_write(client, 0x3015, 0x37); | |
348 | reg_write(client, 0x301C, 0x01); | |
349 | reg_write(client, 0x302C, 0x05); | |
350 | reg_write(client, 0x3031, 0x26); | |
351 | reg_write(client, 0x3041, 0x60); | |
352 | reg_write(client, 0x3051, 0x24); | |
353 | reg_write(client, 0x3053, 0x34); | |
354 | reg_write(client, 0x3057, 0xC0); | |
355 | reg_write(client, 0x305C, 0x09); | |
356 | reg_write(client, 0x305D, 0x07); | |
357 | reg_write(client, 0x3060, 0x30); | |
358 | reg_write(client, 0x3065, 0x00); | |
359 | reg_write(client, 0x30AA, 0x08); | |
360 | reg_write(client, 0x30AB, 0x1C); | |
361 | reg_write(client, 0x30B0, 0x32); | |
362 | reg_write(client, 0x30B2, 0x83); | |
363 | reg_write(client, 0x30D3, 0x04); | |
364 | reg_write(client, 0x3106, 0x78); | |
365 | reg_write(client, 0x310C, 0x82); | |
366 | reg_write(client, 0x3304, 0x05); | |
367 | reg_write(client, 0x3305, 0x04); | |
368 | reg_write(client, 0x3306, 0x11); | |
369 | reg_write(client, 0x3307, 0x02); | |
370 | reg_write(client, 0x3308, 0x0C); | |
371 | reg_write(client, 0x3309, 0x06); | |
372 | reg_write(client, 0x330A, 0x08); | |
373 | reg_write(client, 0x330B, 0x04); | |
374 | reg_write(client, 0x330C, 0x08); | |
375 | reg_write(client, 0x330D, 0x06); | |
376 | reg_write(client, 0x330E, 0x01); | |
377 | reg_write(client, 0x3381, 0x00); | |
378 | ||
379 | /* V : 1/2V-addition (1,3), H : 1/2H-averaging (1,3) -> Full HD */ | |
380 | /* 1608 = 1560 + 48 (black lines) */ | |
381 | reg_write(client, FRAME_LENGTH_LINES_HI, 0x06); | |
382 | reg_write(client, FRAME_LENGTH_LINES_LO, 0x48); | |
383 | reg_write(client, YADDR_START, 0x00); | |
384 | reg_write(client, YADDR_END, 0x2F); | |
385 | /* 0x838 == 2104 */ | |
386 | reg_write(client, X_OUTPUT_SIZE_MSB, 0x08); | |
387 | reg_write(client, X_OUTPUT_SIZE_LSB, 0x38); | |
388 | /* 0x618 == 1560 */ | |
389 | reg_write(client, Y_OUTPUT_SIZE_MSB, 0x06); | |
390 | reg_write(client, Y_OUTPUT_SIZE_LSB, 0x18); | |
391 | reg_write(client, X_EVEN_INC, 0x01); | |
392 | reg_write(client, X_ODD_INC, 0x03); | |
393 | reg_write(client, Y_EVEN_INC, 0x01); | |
394 | reg_write(client, Y_ODD_INC, 0x03); | |
395 | reg_write(client, HMODEADD, 0x00); | |
396 | reg_write(client, VMODEADD, 0x16); | |
397 | reg_write(client, VAPPLINE_START, 0x24); | |
398 | reg_write(client, VAPPLINE_END, 0x53); | |
399 | reg_write(client, SHUTTER, 0x00); | |
400 | reg_write(client, HADDAVE, 0x80); | |
401 | ||
402 | reg_write(client, LANESEL, 0x00); | |
403 | ||
404 | reg_write(client, GROUPED_PARAMETER_HOLD, 0x00); /* off */ | |
405 | ||
4bbc6d52 LP |
406 | ret = 0; |
407 | ||
408 | done: | |
409 | imx074_s_power(subdev, 0); | |
410 | return ret; | |
67826235 GL |
411 | } |
412 | ||
413 | static int imx074_probe(struct i2c_client *client, | |
414 | const struct i2c_device_id *did) | |
415 | { | |
416 | struct imx074 *priv; | |
67826235 | 417 | struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent); |
25a34811 | 418 | struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); |
9aea470b | 419 | int ret; |
67826235 | 420 | |
25a34811 | 421 | if (!ssdd) { |
67826235 GL |
422 | dev_err(&client->dev, "IMX074: missing platform data!\n"); |
423 | return -EINVAL; | |
424 | } | |
425 | ||
426 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) { | |
427 | dev_warn(&adapter->dev, | |
428 | "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n"); | |
429 | return -EIO; | |
430 | } | |
431 | ||
70e176a5 | 432 | priv = devm_kzalloc(&client->dev, sizeof(struct imx074), GFP_KERNEL); |
67826235 GL |
433 | if (!priv) |
434 | return -ENOMEM; | |
435 | ||
436 | v4l2_i2c_subdev_init(&priv->subdev, client, &imx074_subdev_ops); | |
437 | ||
67826235 GL |
438 | priv->fmt = &imx074_colour_fmts[0]; |
439 | ||
9aea470b | 440 | priv->clk = v4l2_clk_get(&client->dev, "mclk"); |
ee17608d GL |
441 | if (IS_ERR(priv->clk)) { |
442 | dev_info(&client->dev, "Error %ld getting clock\n", PTR_ERR(priv->clk)); | |
443 | return -EPROBE_DEFER; | |
444 | } | |
445 | ||
446 | ret = soc_camera_power_init(&client->dev, ssdd); | |
447 | if (ret < 0) | |
448 | goto epwrinit; | |
9aea470b GL |
449 | |
450 | ret = imx074_video_probe(client); | |
451 | if (ret < 0) | |
ee17608d | 452 | goto eprobe; |
9aea470b | 453 | |
507fcd3d GL |
454 | ret = v4l2_async_register_subdev(&priv->subdev); |
455 | if (!ret) | |
456 | return 0; | |
ee17608d GL |
457 | |
458 | epwrinit: | |
459 | eprobe: | |
460 | v4l2_clk_put(priv->clk); | |
9aea470b | 461 | return ret; |
67826235 GL |
462 | } |
463 | ||
464 | static int imx074_remove(struct i2c_client *client) | |
465 | { | |
25a34811 | 466 | struct soc_camera_subdev_desc *ssdd = soc_camera_i2c_to_desc(client); |
9aea470b | 467 | struct imx074 *priv = to_imx074(client); |
67826235 | 468 | |
ee17608d | 469 | v4l2_async_unregister_subdev(&priv->subdev); |
9aea470b | 470 | v4l2_clk_put(priv->clk); |
ee17608d | 471 | |
25a34811 GL |
472 | if (ssdd->free_bus) |
473 | ssdd->free_bus(ssdd); | |
67826235 GL |
474 | |
475 | return 0; | |
476 | } | |
477 | ||
478 | static const struct i2c_device_id imx074_id[] = { | |
479 | { "imx074", 0 }, | |
480 | { } | |
481 | }; | |
482 | MODULE_DEVICE_TABLE(i2c, imx074_id); | |
483 | ||
484 | static struct i2c_driver imx074_i2c_driver = { | |
485 | .driver = { | |
486 | .name = "imx074", | |
487 | }, | |
488 | .probe = imx074_probe, | |
489 | .remove = imx074_remove, | |
490 | .id_table = imx074_id, | |
491 | }; | |
492 | ||
c6e8d86f | 493 | module_i2c_driver(imx074_i2c_driver); |
67826235 GL |
494 | |
495 | MODULE_DESCRIPTION("Sony IMX074 Camera driver"); | |
496 | MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>"); | |
497 | MODULE_LICENSE("GPL v2"); |