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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / media / i2c / ov5640.c
blobda5cb5f45a4ff5b56c41de2143ac5a331f979e54
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
4 * Copyright (C) 2014-2017 Mentor Graphics Inc.
5 */
6
7 #include <linux/clk.h>
8 #include <linux/clk-provider.h>
9 #include <linux/clkdev.h>
10 #include <linux/ctype.h>
11 #include <linux/delay.h>
12 #include <linux/device.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/i2c.h>
15 #include <linux/init.h>
16 #include <linux/mod_devicetable.h>
17 #include <linux/module.h>
18 #include <linux/pm_runtime.h>
19 #include <linux/regulator/consumer.h>
20 #include <linux/slab.h>
21 #include <linux/types.h>
22 #include <media/v4l2-async.h>
23 #include <media/v4l2-ctrls.h>
24 #include <media/v4l2-device.h>
25 #include <media/v4l2-event.h>
26 #include <media/v4l2-fwnode.h>
27 #include <media/v4l2-subdev.h>
28
29 /* min/typical/max system clock (xclk) frequencies */
30 #define OV5640_XCLK_MIN 6000000
31 #define OV5640_XCLK_MAX 54000000
32
33 #define OV5640_NATIVE_WIDTH 2624
34 #define OV5640_NATIVE_HEIGHT 1964
35 #define OV5640_PIXEL_ARRAY_TOP 14
36 #define OV5640_PIXEL_ARRAY_LEFT 16
37 #define OV5640_PIXEL_ARRAY_WIDTH 2592
38 #define OV5640_PIXEL_ARRAY_HEIGHT 1944
39
40 /* FIXME: not documented. */
41 #define OV5640_MIN_VBLANK 24
42 #define OV5640_MAX_VTS 3375
43
44 #define OV5640_DEFAULT_SLAVE_ID 0x3c
45
46 #define OV5640_LINK_RATE_MAX 490000000U
47
48 #define OV5640_REG_SYS_RESET02 0x3002
49 #define OV5640_REG_SYS_CLOCK_ENABLE02 0x3006
50 #define OV5640_REG_SYS_CTRL0 0x3008
51 #define OV5640_REG_SYS_CTRL0_SW_PWDN 0x42
52 #define OV5640_REG_SYS_CTRL0_SW_PWUP 0x02
53 #define OV5640_REG_SYS_CTRL0_SW_RST 0x82
54 #define OV5640_REG_CHIP_ID 0x300a
55 #define OV5640_REG_IO_MIPI_CTRL00 0x300e
56 #define OV5640_REG_PAD_OUTPUT_ENABLE01 0x3017
57 #define OV5640_REG_PAD_OUTPUT_ENABLE02 0x3018
58 #define OV5640_REG_PAD_OUTPUT00 0x3019
59 #define OV5640_REG_SYSTEM_CONTROL1 0x302e
60 #define OV5640_REG_SC_PLL_CTRL0 0x3034
61 #define OV5640_REG_SC_PLL_CTRL1 0x3035
62 #define OV5640_REG_SC_PLL_CTRL2 0x3036
63 #define OV5640_REG_SC_PLL_CTRL3 0x3037
64 #define OV5640_REG_SLAVE_ID 0x3100
65 #define OV5640_REG_SCCB_SYS_CTRL1 0x3103
66 #define OV5640_REG_SYS_ROOT_DIVIDER 0x3108
67 #define OV5640_REG_AWB_R_GAIN 0x3400
68 #define OV5640_REG_AWB_G_GAIN 0x3402
69 #define OV5640_REG_AWB_B_GAIN 0x3404
70 #define OV5640_REG_AWB_MANUAL_CTRL 0x3406
71 #define OV5640_REG_AEC_PK_EXPOSURE_HI 0x3500
72 #define OV5640_REG_AEC_PK_EXPOSURE_MED 0x3501
73 #define OV5640_REG_AEC_PK_EXPOSURE_LO 0x3502
74 #define OV5640_REG_AEC_PK_MANUAL 0x3503
75 #define OV5640_REG_AEC_PK_REAL_GAIN 0x350a
76 #define OV5640_REG_AEC_PK_VTS 0x350c
77 #define OV5640_REG_TIMING_HS 0x3800
78 #define OV5640_REG_TIMING_VS 0x3802
79 #define OV5640_REG_TIMING_HW 0x3804
80 #define OV5640_REG_TIMING_VH 0x3806
81 #define OV5640_REG_TIMING_DVPHO 0x3808
82 #define OV5640_REG_TIMING_DVPVO 0x380a
83 #define OV5640_REG_TIMING_HTS 0x380c
84 #define OV5640_REG_TIMING_VTS 0x380e
85 #define OV5640_REG_TIMING_HOFFS 0x3810
86 #define OV5640_REG_TIMING_VOFFS 0x3812
87 #define OV5640_REG_TIMING_TC_REG20 0x3820
88 #define OV5640_REG_TIMING_TC_REG21 0x3821
89 #define OV5640_REG_AEC_CTRL00 0x3a00
90 #define OV5640_REG_AEC_B50_STEP 0x3a08
91 #define OV5640_REG_AEC_B60_STEP 0x3a0a
92 #define OV5640_REG_AEC_CTRL0D 0x3a0d
93 #define OV5640_REG_AEC_CTRL0E 0x3a0e
94 #define OV5640_REG_AEC_CTRL0F 0x3a0f
95 #define OV5640_REG_AEC_CTRL10 0x3a10
96 #define OV5640_REG_AEC_CTRL11 0x3a11
97 #define OV5640_REG_AEC_CTRL1B 0x3a1b
98 #define OV5640_REG_AEC_CTRL1E 0x3a1e
99 #define OV5640_REG_AEC_CTRL1F 0x3a1f
100 #define OV5640_REG_HZ5060_CTRL00 0x3c00
101 #define OV5640_REG_HZ5060_CTRL01 0x3c01
102 #define OV5640_REG_SIGMADELTA_CTRL0C 0x3c0c
103 #define OV5640_REG_FRAME_CTRL01 0x4202
104 #define OV5640_REG_FORMAT_CONTROL00 0x4300
105 #define OV5640_REG_VFIFO_HSIZE 0x4602
106 #define OV5640_REG_VFIFO_VSIZE 0x4604
107 #define OV5640_REG_JPG_MODE_SELECT 0x4713
108 #define OV5640_REG_CCIR656_CTRL00 0x4730
109 #define OV5640_REG_POLARITY_CTRL00 0x4740
110 #define OV5640_REG_MIPI_CTRL00 0x4800
111 #define OV5640_REG_DEBUG_MODE 0x4814
112 #define OV5640_REG_PCLK_PERIOD 0x4837
113 #define OV5640_REG_ISP_FORMAT_MUX_CTRL 0x501f
114 #define OV5640_REG_PRE_ISP_TEST_SET1 0x503d
115 #define OV5640_REG_SDE_CTRL0 0x5580
116 #define OV5640_REG_SDE_CTRL1 0x5581
117 #define OV5640_REG_SDE_CTRL3 0x5583
118 #define OV5640_REG_SDE_CTRL4 0x5584
119 #define OV5640_REG_SDE_CTRL5 0x5585
120 #define OV5640_REG_AVG_READOUT 0x56a1
121
122 enum ov5640_mode_id {
123 OV5640_MODE_QQVGA_160_120 = 0,
124 OV5640_MODE_QCIF_176_144,
125 OV5640_MODE_QVGA_320_240,
126 OV5640_MODE_VGA_640_480,
127 OV5640_MODE_NTSC_720_480,
128 OV5640_MODE_PAL_720_576,
129 OV5640_MODE_XGA_1024_768,
130 OV5640_MODE_720P_1280_720,
131 OV5640_MODE_1080P_1920_1080,
132 OV5640_MODE_QSXGA_2592_1944,
133 OV5640_NUM_MODES,
134 };
135
136 enum ov5640_frame_rate {
137 OV5640_15_FPS = 0,
138 OV5640_30_FPS,
139 OV5640_60_FPS,
140 OV5640_NUM_FRAMERATES,
141 };
142
143 enum ov5640_pixel_rate_id {
144 OV5640_PIXEL_RATE_168M,
145 OV5640_PIXEL_RATE_148M,
146 OV5640_PIXEL_RATE_124M,
147 OV5640_PIXEL_RATE_96M,
148 OV5640_PIXEL_RATE_48M,
149 OV5640_NUM_PIXEL_RATES,
150 };
151
152 /*
153 * The chip manual suggests 24/48/96/192 MHz pixel clocks.
154 *
155 * 192MHz exceeds the sysclk limits; use 168MHz as maximum pixel rate for
156 * full resolution mode @15 FPS.
157 */
158 static const u32 ov5640_pixel_rates[] = {
159 [OV5640_PIXEL_RATE_168M] = 168000000,
160 [OV5640_PIXEL_RATE_148M] = 148000000,
161 [OV5640_PIXEL_RATE_124M] = 124000000,
162 [OV5640_PIXEL_RATE_96M] = 96000000,
163 [OV5640_PIXEL_RATE_48M] = 48000000,
164 };
165
166 /*
167 * MIPI CSI-2 link frequencies.
168 *
169 * Derived from the above defined pixel rate for bpp = (8, 16, 24) and
170 * data_lanes = (1, 2)
171 *
172 * link_freq = (pixel_rate * bpp) / (2 * data_lanes)
173 */
174 static const s64 ov5640_csi2_link_freqs[] = {
175 992000000, 888000000, 768000000, 744000000, 672000000, 672000000,
176 592000000, 592000000, 576000000, 576000000, 496000000, 496000000,
177 384000000, 384000000, 384000000, 336000000, 296000000, 288000000,
178 248000000, 192000000, 192000000, 192000000, 96000000,
179 };
180
181 /* Link freq for default mode: UYVY 16 bpp, 2 data lanes. */
182 #define OV5640_DEFAULT_LINK_FREQ 13
183
184 enum ov5640_format_mux {
185 OV5640_FMT_MUX_YUV422 = 0,
186 OV5640_FMT_MUX_RGB,
187 OV5640_FMT_MUX_DITHER,
188 OV5640_FMT_MUX_RAW_DPC,
189 OV5640_FMT_MUX_SNR_RAW,
190 OV5640_FMT_MUX_RAW_CIP,
191 };
192
193 struct ov5640_pixfmt {
194 u32 code;
195 u32 colorspace;
196 u8 bpp;
197 u8 ctrl00;
198 enum ov5640_format_mux mux;
199 };
200
201 static const struct ov5640_pixfmt ov5640_dvp_formats[] = {
202 {
203 /* YUV422, YUYV */
204 .code = MEDIA_BUS_FMT_JPEG_1X8,
205 .colorspace = V4L2_COLORSPACE_JPEG,
206 .bpp = 16,
207 .ctrl00 = 0x30,
208 .mux = OV5640_FMT_MUX_YUV422,
209 }, {
210 /* YUV422, UYVY */
211 .code = MEDIA_BUS_FMT_UYVY8_2X8,
212 .colorspace = V4L2_COLORSPACE_SRGB,
213 .bpp = 16,
214 .ctrl00 = 0x3f,
215 .mux = OV5640_FMT_MUX_YUV422,
216 }, {
217 /* YUV422, YUYV */
218 .code = MEDIA_BUS_FMT_YUYV8_2X8,
219 .colorspace = V4L2_COLORSPACE_SRGB,
220 .bpp = 16,
221 .ctrl00 = 0x30,
222 .mux = OV5640_FMT_MUX_YUV422,
223 }, {
224 /* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */
225 .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
226 .colorspace = V4L2_COLORSPACE_SRGB,
227 .bpp = 16,
228 .ctrl00 = 0x6f,
229 .mux = OV5640_FMT_MUX_RGB,
230 }, {
231 /* RGB565 {r[4:0],g[5:3]},{g[2:0],b[4:0]} */
232 .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
233 .colorspace = V4L2_COLORSPACE_SRGB,
234 .bpp = 16,
235 .ctrl00 = 0x61,
236 .mux = OV5640_FMT_MUX_RGB,
237 }, {
238 /* Raw, BGBG... / GRGR... */
239 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
240 .colorspace = V4L2_COLORSPACE_SRGB,
241 .bpp = 8,
242 .ctrl00 = 0x00,
243 .mux = OV5640_FMT_MUX_RAW_DPC,
244 }, {
245 /* Raw bayer, GBGB... / RGRG... */
246 .code = MEDIA_BUS_FMT_SGBRG8_1X8,
247 .colorspace = V4L2_COLORSPACE_SRGB,
248 .bpp = 8,
249 .ctrl00 = 0x01,
250 .mux = OV5640_FMT_MUX_RAW_DPC,
251 }, {
252 /* Raw bayer, GRGR... / BGBG... */
253 .code = MEDIA_BUS_FMT_SGRBG8_1X8,
254 .colorspace = V4L2_COLORSPACE_SRGB,
255 .bpp = 8,
256 .ctrl00 = 0x02,
257 .mux = OV5640_FMT_MUX_RAW_DPC,
258 }, {
259 /* Raw bayer, RGRG... / GBGB... */
260 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
261 .colorspace = V4L2_COLORSPACE_SRGB,
262 .bpp = 8,
263 .ctrl00 = 0x03,
264 .mux = OV5640_FMT_MUX_RAW_DPC,
265 },
266 { /* sentinel */ }
267 };
268
269 static const struct ov5640_pixfmt ov5640_csi2_formats[] = {
270 {
271 /* YUV422, YUYV */
272 .code = MEDIA_BUS_FMT_JPEG_1X8,
273 .colorspace = V4L2_COLORSPACE_JPEG,
274 .bpp = 16,
275 .ctrl00 = 0x30,
276 .mux = OV5640_FMT_MUX_YUV422,
277 }, {
278 /* YUV422, UYVY */
279 .code = MEDIA_BUS_FMT_UYVY8_1X16,
280 .colorspace = V4L2_COLORSPACE_SRGB,
281 .bpp = 16,
282 .ctrl00 = 0x3f,
283 .mux = OV5640_FMT_MUX_YUV422,
284 }, {
285 /* YUV422, YUYV */
286 .code = MEDIA_BUS_FMT_YUYV8_1X16,
287 .colorspace = V4L2_COLORSPACE_SRGB,
288 .bpp = 16,
289 .ctrl00 = 0x30,
290 .mux = OV5640_FMT_MUX_YUV422,
291 }, {
292 /* RGB565 {g[2:0],b[4:0]},{r[4:0],g[5:3]} */
293 .code = MEDIA_BUS_FMT_RGB565_1X16,
294 .colorspace = V4L2_COLORSPACE_SRGB,
295 .bpp = 16,
296 .ctrl00 = 0x6f,
297 .mux = OV5640_FMT_MUX_RGB,
298 }, {
299 /* BGR888: RGB */
300 .code = MEDIA_BUS_FMT_BGR888_1X24,
301 .colorspace = V4L2_COLORSPACE_SRGB,
302 .bpp = 24,
303 .ctrl00 = 0x23,
304 .mux = OV5640_FMT_MUX_RGB,
305 }, {
306 /* Raw, BGBG... / GRGR... */
307 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
308 .colorspace = V4L2_COLORSPACE_SRGB,
309 .bpp = 8,
310 .ctrl00 = 0x00,
311 .mux = OV5640_FMT_MUX_RAW_DPC,
312 }, {
313 /* Raw bayer, GBGB... / RGRG... */
314 .code = MEDIA_BUS_FMT_SGBRG8_1X8,
315 .colorspace = V4L2_COLORSPACE_SRGB,
316 .bpp = 8,
317 .ctrl00 = 0x01,
318 .mux = OV5640_FMT_MUX_RAW_DPC,
319 }, {
320 /* Raw bayer, GRGR... / BGBG... */
321 .code = MEDIA_BUS_FMT_SGRBG8_1X8,
322 .colorspace = V4L2_COLORSPACE_SRGB,
323 .bpp = 8,
324 .ctrl00 = 0x02,
325 .mux = OV5640_FMT_MUX_RAW_DPC,
326 }, {
327 /* Raw bayer, RGRG... / GBGB... */
328 .code = MEDIA_BUS_FMT_SRGGB8_1X8,
329 .colorspace = V4L2_COLORSPACE_SRGB,
330 .bpp = 8,
331 .ctrl00 = 0x03,
332 .mux = OV5640_FMT_MUX_RAW_DPC,
333 },
334 { /* sentinel */ }
335 };
336
337 /*
338 * FIXME: remove this when a subdev API becomes available
339 * to set the MIPI CSI-2 virtual channel.
340 */
341 static unsigned int virtual_channel;
342 module_param(virtual_channel, uint, 0444);
343 MODULE_PARM_DESC(virtual_channel,
344 "MIPI CSI-2 virtual channel (0..3), default 0");
345
346 static const int ov5640_framerates[] = {
347 [OV5640_15_FPS] = 15,
348 [OV5640_30_FPS] = 30,
349 [OV5640_60_FPS] = 60,
350 };
351
352 /* regulator supplies */
353 static const char * const ov5640_supply_name[] = {
354 "DOVDD", /* Digital I/O (1.8V) supply */
355 "AVDD", /* Analog (2.8V) supply */
356 "DVDD", /* Digital Core (1.5V) supply */
357 };
358
359 #define OV5640_NUM_SUPPLIES ARRAY_SIZE(ov5640_supply_name)
360
361 /*
362 * Image size under 1280 * 960 are SUBSAMPLING
363 * Image size upper 1280 * 960 are SCALING
364 */
365 enum ov5640_downsize_mode {
366 SUBSAMPLING,
367 SCALING,
368 };
369
370 struct reg_value {
371 u16 reg_addr;
372 u8 val;
373 u8 mask;
374 u32 delay_ms;
375 };
376
377 struct ov5640_timings {
378 /* Analog crop rectangle. */
379 struct v4l2_rect analog_crop;
380 /* Visible crop: from analog crop top-left corner. */
381 struct v4l2_rect crop;
382 /* Total pixels per line: width + fixed hblank. */
383 u32 htot;
384 /* Default vertical blanking: frame height = height + vblank. */
385 u32 vblank_def;
386 };
387
388 struct ov5640_mode_info {
389 enum ov5640_mode_id id;
390 enum ov5640_downsize_mode dn_mode;
391 enum ov5640_pixel_rate_id pixel_rate;
392
393 unsigned int width;
394 unsigned int height;
395
396 struct ov5640_timings dvp_timings;
397 struct ov5640_timings csi2_timings;
398
399 const struct reg_value *reg_data;
400 u32 reg_data_size;
401
402 /* Used by set_frame_interval only. */
403 u32 max_fps;
404 u32 def_fps;
405 };
406
407 struct ov5640_ctrls {
408 struct v4l2_ctrl_handler handler;
409 struct v4l2_ctrl *pixel_rate;
410 struct v4l2_ctrl *link_freq;
411 struct v4l2_ctrl *hblank;
412 struct v4l2_ctrl *vblank;
413 struct {
414 struct v4l2_ctrl *auto_exp;
415 struct v4l2_ctrl *exposure;
416 };
417 struct {
418 struct v4l2_ctrl *auto_wb;
419 struct v4l2_ctrl *blue_balance;
420 struct v4l2_ctrl *red_balance;
421 };
422 struct {
423 struct v4l2_ctrl *auto_gain;
424 struct v4l2_ctrl *gain;
425 };
426 struct v4l2_ctrl *brightness;
427 struct v4l2_ctrl *light_freq;
428 struct v4l2_ctrl *saturation;
429 struct v4l2_ctrl *contrast;
430 struct v4l2_ctrl *hue;
431 struct v4l2_ctrl *test_pattern;
432 struct v4l2_ctrl *hflip;
433 struct v4l2_ctrl *vflip;
434 };
435
436 struct ov5640_dev {
437 struct i2c_client *i2c_client;
438 struct v4l2_subdev sd;
439 struct media_pad pad;
440 struct v4l2_fwnode_endpoint ep; /* the parsed DT endpoint info */
441 struct clk *xclk; /* system clock to OV5640 */
442 u32 xclk_freq;
443
444 struct regulator_bulk_data supplies[OV5640_NUM_SUPPLIES];
445 struct gpio_desc *reset_gpio;
446 struct gpio_desc *pwdn_gpio;
447 bool upside_down;
448
449 /* lock to protect all members below */
450 struct mutex lock;
451
452 struct v4l2_mbus_framefmt fmt;
453 bool pending_fmt_change;
454
455 const struct ov5640_mode_info *current_mode;
456 const struct ov5640_mode_info *last_mode;
457 enum ov5640_frame_rate current_fr;
458 struct v4l2_fract frame_interval;
459 s64 current_link_freq;
460
461 struct ov5640_ctrls ctrls;
462
463 u32 prev_sysclk, prev_hts;
464 u32 ae_low, ae_high, ae_target;
465
466 bool pending_mode_change;
467 bool streaming;
468 };
469
470 static inline struct ov5640_dev *to_ov5640_dev(struct v4l2_subdev *sd)
471 {
472 return container_of(sd, struct ov5640_dev, sd);
473 }
474
475 static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
476 {
477 return &container_of(ctrl->handler, struct ov5640_dev,
478 ctrls.handler)->sd;
479 }
480
481 static inline bool ov5640_is_csi2(const struct ov5640_dev *sensor)
482 {
483 return sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY;
484 }
485
486 static inline const struct ov5640_pixfmt *
487 ov5640_formats(struct ov5640_dev *sensor)
488 {
489 return ov5640_is_csi2(sensor) ? ov5640_csi2_formats
490 : ov5640_dvp_formats;
491 }
492
493 static const struct ov5640_pixfmt *
494 ov5640_code_to_pixfmt(struct ov5640_dev *sensor, u32 code)
495 {
496 const struct ov5640_pixfmt *formats = ov5640_formats(sensor);
497 unsigned int i;
498
499 for (i = 0; formats[i].code; ++i) {
500 if (formats[i].code == code)
501 return &formats[i];
502 }
503
504 return &formats[0];
505 }
506
507 static u32 ov5640_code_to_bpp(struct ov5640_dev *sensor, u32 code)
508 {
509 const struct ov5640_pixfmt *format = ov5640_code_to_pixfmt(sensor,
510 code);
511
512 return format->bpp;
513 }
514
515 /*
516 * FIXME: all of these register tables are likely filled with
517 * entries that set the register to their power-on default values,
518 * and which are otherwise not touched by this driver. Those entries
519 * should be identified and removed to speed register load time
520 * over i2c.
521 */
522 /* YUV422 UYVY VGA@30fps */
523
524 static const struct v4l2_mbus_framefmt ov5640_csi2_default_fmt = {
525 .code = MEDIA_BUS_FMT_UYVY8_1X16,
526 .width = 640,
527 .height = 480,
528 .colorspace = V4L2_COLORSPACE_SRGB,
529 .ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(V4L2_COLORSPACE_SRGB),
530 .quantization = V4L2_QUANTIZATION_FULL_RANGE,
531 .xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(V4L2_COLORSPACE_SRGB),
532 .field = V4L2_FIELD_NONE,
533 };
534
535 static const struct v4l2_mbus_framefmt ov5640_dvp_default_fmt = {
536 .code = MEDIA_BUS_FMT_UYVY8_2X8,
537 .width = 640,
538 .height = 480,
539 .colorspace = V4L2_COLORSPACE_SRGB,
540 .ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(V4L2_COLORSPACE_SRGB),
541 .quantization = V4L2_QUANTIZATION_FULL_RANGE,
542 .xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(V4L2_COLORSPACE_SRGB),
543 .field = V4L2_FIELD_NONE,
544 };
545
546 static const struct reg_value ov5640_init_setting[] = {
547 {0x3103, 0x11, 0, 0},
548 {0x3103, 0x03, 0, 0}, {0x3630, 0x36, 0, 0},
549 {0x3631, 0x0e, 0, 0}, {0x3632, 0xe2, 0, 0}, {0x3633, 0x12, 0, 0},
550 {0x3621, 0xe0, 0, 0}, {0x3704, 0xa0, 0, 0}, {0x3703, 0x5a, 0, 0},
551 {0x3715, 0x78, 0, 0}, {0x3717, 0x01, 0, 0}, {0x370b, 0x60, 0, 0},
552 {0x3705, 0x1a, 0, 0}, {0x3905, 0x02, 0, 0}, {0x3906, 0x10, 0, 0},
553 {0x3901, 0x0a, 0, 0}, {0x3731, 0x12, 0, 0}, {0x3600, 0x08, 0, 0},
554 {0x3601, 0x33, 0, 0}, {0x302d, 0x60, 0, 0}, {0x3620, 0x52, 0, 0},
555 {0x371b, 0x20, 0, 0}, {0x471c, 0x50, 0, 0}, {0x3a13, 0x43, 0, 0},
556 {0x3a18, 0x00, 0, 0}, {0x3a19, 0xf8, 0, 0}, {0x3635, 0x13, 0, 0},
557 {0x3636, 0x03, 0, 0}, {0x3634, 0x40, 0, 0}, {0x3622, 0x01, 0, 0},
558 {0x3c01, 0xa4, 0, 0}, {0x3c04, 0x28, 0, 0}, {0x3c05, 0x98, 0, 0},
559 {0x3c06, 0x00, 0, 0}, {0x3c07, 0x08, 0, 0}, {0x3c08, 0x00, 0, 0},
560 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
561 {0x3820, 0x41, 0, 0}, {0x3821, 0x07, 0, 0}, {0x3814, 0x31, 0, 0},
562 {0x3815, 0x31, 0, 0},
563 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
564 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
565 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
566 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
567 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
568 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0}, {0x3000, 0x00, 0, 0},
569 {0x3002, 0x1c, 0, 0}, {0x3004, 0xff, 0, 0}, {0x3006, 0xc3, 0, 0},
570 {0x302e, 0x08, 0, 0}, {0x4300, 0x3f, 0, 0},
571 {0x501f, 0x00, 0, 0}, {0x440e, 0x00, 0, 0}, {0x4837, 0x0a, 0, 0},
572 {0x5000, 0xa7, 0, 0}, {0x5001, 0xa3, 0, 0}, {0x5180, 0xff, 0, 0},
573 {0x5181, 0xf2, 0, 0}, {0x5182, 0x00, 0, 0}, {0x5183, 0x14, 0, 0},
574 {0x5184, 0x25, 0, 0}, {0x5185, 0x24, 0, 0}, {0x5186, 0x09, 0, 0},
575 {0x5187, 0x09, 0, 0}, {0x5188, 0x09, 0, 0}, {0x5189, 0x88, 0, 0},
576 {0x518a, 0x54, 0, 0}, {0x518b, 0xee, 0, 0}, {0x518c, 0xb2, 0, 0},
577 {0x518d, 0x50, 0, 0}, {0x518e, 0x34, 0, 0}, {0x518f, 0x6b, 0, 0},
578 {0x5190, 0x46, 0, 0}, {0x5191, 0xf8, 0, 0}, {0x5192, 0x04, 0, 0},
579 {0x5193, 0x70, 0, 0}, {0x5194, 0xf0, 0, 0}, {0x5195, 0xf0, 0, 0},
580 {0x5196, 0x03, 0, 0}, {0x5197, 0x01, 0, 0}, {0x5198, 0x04, 0, 0},
581 {0x5199, 0x6c, 0, 0}, {0x519a, 0x04, 0, 0}, {0x519b, 0x00, 0, 0},
582 {0x519c, 0x09, 0, 0}, {0x519d, 0x2b, 0, 0}, {0x519e, 0x38, 0, 0},
583 {0x5381, 0x1e, 0, 0}, {0x5382, 0x5b, 0, 0}, {0x5383, 0x08, 0, 0},
584 {0x5384, 0x0a, 0, 0}, {0x5385, 0x7e, 0, 0}, {0x5386, 0x88, 0, 0},
585 {0x5387, 0x7c, 0, 0}, {0x5388, 0x6c, 0, 0}, {0x5389, 0x10, 0, 0},
586 {0x538a, 0x01, 0, 0}, {0x538b, 0x98, 0, 0}, {0x5300, 0x08, 0, 0},
587 {0x5301, 0x30, 0, 0}, {0x5302, 0x10, 0, 0}, {0x5303, 0x00, 0, 0},
588 {0x5304, 0x08, 0, 0}, {0x5305, 0x30, 0, 0}, {0x5306, 0x08, 0, 0},
589 {0x5307, 0x16, 0, 0}, {0x5309, 0x08, 0, 0}, {0x530a, 0x30, 0, 0},
590 {0x530b, 0x04, 0, 0}, {0x530c, 0x06, 0, 0}, {0x5480, 0x01, 0, 0},
591 {0x5481, 0x08, 0, 0}, {0x5482, 0x14, 0, 0}, {0x5483, 0x28, 0, 0},
592 {0x5484, 0x51, 0, 0}, {0x5485, 0x65, 0, 0}, {0x5486, 0x71, 0, 0},
593 {0x5487, 0x7d, 0, 0}, {0x5488, 0x87, 0, 0}, {0x5489, 0x91, 0, 0},
594 {0x548a, 0x9a, 0, 0}, {0x548b, 0xaa, 0, 0}, {0x548c, 0xb8, 0, 0},
595 {0x548d, 0xcd, 0, 0}, {0x548e, 0xdd, 0, 0}, {0x548f, 0xea, 0, 0},
596 {0x5490, 0x1d, 0, 0}, {0x5580, 0x02, 0, 0}, {0x5583, 0x40, 0, 0},
597 {0x5584, 0x10, 0, 0}, {0x5589, 0x10, 0, 0}, {0x558a, 0x00, 0, 0},
598 {0x558b, 0xf8, 0, 0}, {0x5800, 0x23, 0, 0}, {0x5801, 0x14, 0, 0},
599 {0x5802, 0x0f, 0, 0}, {0x5803, 0x0f, 0, 0}, {0x5804, 0x12, 0, 0},
600 {0x5805, 0x26, 0, 0}, {0x5806, 0x0c, 0, 0}, {0x5807, 0x08, 0, 0},
601 {0x5808, 0x05, 0, 0}, {0x5809, 0x05, 0, 0}, {0x580a, 0x08, 0, 0},
602 {0x580b, 0x0d, 0, 0}, {0x580c, 0x08, 0, 0}, {0x580d, 0x03, 0, 0},
603 {0x580e, 0x00, 0, 0}, {0x580f, 0x00, 0, 0}, {0x5810, 0x03, 0, 0},
604 {0x5811, 0x09, 0, 0}, {0x5812, 0x07, 0, 0}, {0x5813, 0x03, 0, 0},
605 {0x5814, 0x00, 0, 0}, {0x5815, 0x01, 0, 0}, {0x5816, 0x03, 0, 0},
606 {0x5817, 0x08, 0, 0}, {0x5818, 0x0d, 0, 0}, {0x5819, 0x08, 0, 0},
607 {0x581a, 0x05, 0, 0}, {0x581b, 0x06, 0, 0}, {0x581c, 0x08, 0, 0},
608 {0x581d, 0x0e, 0, 0}, {0x581e, 0x29, 0, 0}, {0x581f, 0x17, 0, 0},
609 {0x5820, 0x11, 0, 0}, {0x5821, 0x11, 0, 0}, {0x5822, 0x15, 0, 0},
610 {0x5823, 0x28, 0, 0}, {0x5824, 0x46, 0, 0}, {0x5825, 0x26, 0, 0},
611 {0x5826, 0x08, 0, 0}, {0x5827, 0x26, 0, 0}, {0x5828, 0x64, 0, 0},
612 {0x5829, 0x26, 0, 0}, {0x582a, 0x24, 0, 0}, {0x582b, 0x22, 0, 0},
613 {0x582c, 0x24, 0, 0}, {0x582d, 0x24, 0, 0}, {0x582e, 0x06, 0, 0},
614 {0x582f, 0x22, 0, 0}, {0x5830, 0x40, 0, 0}, {0x5831, 0x42, 0, 0},
615 {0x5832, 0x24, 0, 0}, {0x5833, 0x26, 0, 0}, {0x5834, 0x24, 0, 0},
616 {0x5835, 0x22, 0, 0}, {0x5836, 0x22, 0, 0}, {0x5837, 0x26, 0, 0},
617 {0x5838, 0x44, 0, 0}, {0x5839, 0x24, 0, 0}, {0x583a, 0x26, 0, 0},
618 {0x583b, 0x28, 0, 0}, {0x583c, 0x42, 0, 0}, {0x583d, 0xce, 0, 0},
619 {0x5025, 0x00, 0, 0}, {0x3a0f, 0x30, 0, 0}, {0x3a10, 0x28, 0, 0},
620 {0x3a1b, 0x30, 0, 0}, {0x3a1e, 0x26, 0, 0}, {0x3a11, 0x60, 0, 0},
621 {0x3a1f, 0x14, 0, 0}, {0x3008, 0x02, 0, 0}, {0x3c00, 0x04, 0, 300},
622 };
623
624 static const struct reg_value ov5640_setting_low_res[] = {
625 {0x3c07, 0x08, 0, 0},
626 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
627 {0x3814, 0x31, 0, 0},
628 {0x3815, 0x31, 0, 0},
629 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
630 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x03, 0, 0},
631 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
632 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
633 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
634 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
635 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
636 {0x3824, 0x02, 0, 0}, {0x5001, 0xa3, 0, 0},
637 };
638
639 static const struct reg_value ov5640_setting_720P_1280_720[] = {
640 {0x3c07, 0x07, 0, 0},
641 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
642 {0x3814, 0x31, 0, 0},
643 {0x3815, 0x31, 0, 0},
644 {0x3618, 0x00, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x64, 0, 0},
645 {0x3709, 0x52, 0, 0}, {0x370c, 0x03, 0, 0}, {0x3a02, 0x02, 0, 0},
646 {0x3a03, 0xe4, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0xbc, 0, 0},
647 {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x72, 0, 0}, {0x3a0e, 0x01, 0, 0},
648 {0x3a0d, 0x02, 0, 0}, {0x3a14, 0x02, 0, 0}, {0x3a15, 0xe4, 0, 0},
649 {0x4001, 0x02, 0, 0}, {0x4004, 0x02, 0, 0},
650 {0x4407, 0x04, 0, 0}, {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0},
651 {0x3824, 0x04, 0, 0}, {0x5001, 0x83, 0, 0},
652 };
653
654 static const struct reg_value ov5640_setting_1080P_1920_1080[] = {
655 {0x3c07, 0x08, 0, 0},
656 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
657 {0x3814, 0x11, 0, 0},
658 {0x3815, 0x11, 0, 0},
659 {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
660 {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
661 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
662 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
663 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
664 {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0},
665 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
666 {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 0},
667 {0x3c07, 0x07, 0, 0}, {0x3c08, 0x00, 0, 0},
668 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
669 {0x3612, 0x2b, 0, 0}, {0x3708, 0x64, 0, 0},
670 {0x3a02, 0x04, 0, 0}, {0x3a03, 0x60, 0, 0}, {0x3a08, 0x01, 0, 0},
671 {0x3a09, 0x50, 0, 0}, {0x3a0a, 0x01, 0, 0}, {0x3a0b, 0x18, 0, 0},
672 {0x3a0e, 0x03, 0, 0}, {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x04, 0, 0},
673 {0x3a15, 0x60, 0, 0}, {0x4407, 0x04, 0, 0},
674 {0x460b, 0x37, 0, 0}, {0x460c, 0x20, 0, 0}, {0x3824, 0x04, 0, 0},
675 {0x4005, 0x1a, 0, 0},
676 };
677
678 static const struct reg_value ov5640_setting_QSXGA_2592_1944[] = {
679 {0x3c07, 0x08, 0, 0},
680 {0x3c09, 0x1c, 0, 0}, {0x3c0a, 0x9c, 0, 0}, {0x3c0b, 0x40, 0, 0},
681 {0x3814, 0x11, 0, 0},
682 {0x3815, 0x11, 0, 0},
683 {0x3618, 0x04, 0, 0}, {0x3612, 0x29, 0, 0}, {0x3708, 0x21, 0, 0},
684 {0x3709, 0x12, 0, 0}, {0x370c, 0x00, 0, 0}, {0x3a02, 0x03, 0, 0},
685 {0x3a03, 0xd8, 0, 0}, {0x3a08, 0x01, 0, 0}, {0x3a09, 0x27, 0, 0},
686 {0x3a0a, 0x00, 0, 0}, {0x3a0b, 0xf6, 0, 0}, {0x3a0e, 0x03, 0, 0},
687 {0x3a0d, 0x04, 0, 0}, {0x3a14, 0x03, 0, 0}, {0x3a15, 0xd8, 0, 0},
688 {0x4001, 0x02, 0, 0}, {0x4004, 0x06, 0, 0},
689 {0x4407, 0x04, 0, 0}, {0x460b, 0x35, 0, 0}, {0x460c, 0x22, 0, 0},
690 {0x3824, 0x02, 0, 0}, {0x5001, 0x83, 0, 70},
691 };
692
693 static const struct ov5640_mode_info ov5640_mode_data[OV5640_NUM_MODES] = {
694 {
695 /* 160x120 */
696 .id = OV5640_MODE_QQVGA_160_120,
697 .dn_mode = SUBSAMPLING,
698 .pixel_rate = OV5640_PIXEL_RATE_48M,
699 .width = 160,
700 .height = 120,
701 .dvp_timings = {
702 .analog_crop = {
703 .left = 0,
704 .top = 4,
705 .width = 2624,
706 .height = 1944,
707 },
708 .crop = {
709 .left = 16,
710 .top = 6,
711 .width = 160,
712 .height = 120,
713 },
714 .htot = 1896,
715 .vblank_def = 864,
716 },
717 .csi2_timings = {
718 /* Feed the full valid pixel array to the ISP. */
719 .analog_crop = {
720 .left = OV5640_PIXEL_ARRAY_LEFT,
721 .top = OV5640_PIXEL_ARRAY_TOP,
722 .width = OV5640_PIXEL_ARRAY_WIDTH,
723 .height = OV5640_PIXEL_ARRAY_HEIGHT,
724 },
725 /* Maintain a minimum processing margin. */
726 .crop = {
727 .left = 2,
728 .top = 4,
729 .width = 160,
730 .height = 120,
731 },
732 .htot = 1600,
733 .vblank_def = 878,
734 },
735 .reg_data = ov5640_setting_low_res,
736 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
737 .max_fps = OV5640_30_FPS,
738 .def_fps = OV5640_30_FPS
739 }, {
740 /* 176x144 */
741 .id = OV5640_MODE_QCIF_176_144,
742 .dn_mode = SUBSAMPLING,
743 .pixel_rate = OV5640_PIXEL_RATE_48M,
744 .width = 176,
745 .height = 144,
746 .dvp_timings = {
747 .analog_crop = {
748 .left = 0,
749 .top = 4,
750 .width = 2624,
751 .height = 1944,
752 },
753 .crop = {
754 .left = 16,
755 .top = 6,
756 .width = 176,
757 .height = 144,
758 },
759 .htot = 1896,
760 .vblank_def = 840,
761 },
762 .csi2_timings = {
763 /* Feed the full valid pixel array to the ISP. */
764 .analog_crop = {
765 .left = OV5640_PIXEL_ARRAY_LEFT,
766 .top = OV5640_PIXEL_ARRAY_TOP,
767 .width = OV5640_PIXEL_ARRAY_WIDTH,
768 .height = OV5640_PIXEL_ARRAY_HEIGHT,
769 },
770 /* Maintain a minimum processing margin. */
771 .crop = {
772 .left = 2,
773 .top = 4,
774 .width = 176,
775 .height = 144,
776 },
777 .htot = 1600,
778 .vblank_def = 854,
779 },
780 .reg_data = ov5640_setting_low_res,
781 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
782 .max_fps = OV5640_30_FPS,
783 .def_fps = OV5640_30_FPS
784 }, {
785 /* 320x240 */
786 .id = OV5640_MODE_QVGA_320_240,
787 .dn_mode = SUBSAMPLING,
788 .width = 320,
789 .height = 240,
790 .pixel_rate = OV5640_PIXEL_RATE_48M,
791 .dvp_timings = {
792 .analog_crop = {
793 .left = 0,
794 .top = 4,
795 .width = 2624,
796 .height = 1944,
797 },
798 .crop = {
799 .left = 16,
800 .top = 6,
801 .width = 320,
802 .height = 240,
803 },
804 .htot = 1896,
805 .vblank_def = 744,
806 },
807 .csi2_timings = {
808 /* Feed the full valid pixel array to the ISP. */
809 .analog_crop = {
810 .left = OV5640_PIXEL_ARRAY_LEFT,
811 .top = OV5640_PIXEL_ARRAY_TOP,
812 .width = OV5640_PIXEL_ARRAY_WIDTH,
813 .height = OV5640_PIXEL_ARRAY_HEIGHT,
814 },
815 /* Maintain a minimum processing margin. */
816 .crop = {
817 .left = 2,
818 .top = 4,
819 .width = 320,
820 .height = 240,
821 },
822 .htot = 1600,
823 .vblank_def = 760,
824 },
825 .reg_data = ov5640_setting_low_res,
826 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
827 .max_fps = OV5640_30_FPS,
828 .def_fps = OV5640_30_FPS
829 }, {
830 /* 640x480 */
831 .id = OV5640_MODE_VGA_640_480,
832 .dn_mode = SUBSAMPLING,
833 .pixel_rate = OV5640_PIXEL_RATE_48M,
834 .width = 640,
835 .height = 480,
836 .dvp_timings = {
837 .analog_crop = {
838 .left = 0,
839 .top = 4,
840 .width = 2624,
841 .height = 1944,
842 },
843 .crop = {
844 .left = 16,
845 .top = 6,
846 .width = 640,
847 .height = 480,
848 },
849 .htot = 1896,
850 .vblank_def = 600,
851 },
852 .csi2_timings = {
853 /* Feed the full valid pixel array to the ISP. */
854 .analog_crop = {
855 .left = OV5640_PIXEL_ARRAY_LEFT,
856 .top = OV5640_PIXEL_ARRAY_TOP,
857 .width = OV5640_PIXEL_ARRAY_WIDTH,
858 .height = OV5640_PIXEL_ARRAY_HEIGHT,
859 },
860 /* Maintain a minimum processing margin. */
861 .crop = {
862 .left = 2,
863 .top = 4,
864 .width = 640,
865 .height = 480,
866 },
867 .htot = 1600,
868 .vblank_def = 520,
869 },
870 .reg_data = ov5640_setting_low_res,
871 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
872 .max_fps = OV5640_60_FPS,
873 .def_fps = OV5640_30_FPS
874 }, {
875 /* 720x480 */
876 .id = OV5640_MODE_NTSC_720_480,
877 .dn_mode = SUBSAMPLING,
878 .width = 720,
879 .height = 480,
880 .pixel_rate = OV5640_PIXEL_RATE_96M,
881 .dvp_timings = {
882 .analog_crop = {
883 .left = 0,
884 .top = 4,
885 .width = 2624,
886 .height = 1944,
887 },
888 .crop = {
889 .left = 56,
890 .top = 60,
891 .width = 720,
892 .height = 480,
893 },
894 .htot = 1896,
895 .vblank_def = 504,
896 },
897 .csi2_timings = {
898 /* Feed the full valid pixel array to the ISP. */
899 .analog_crop = {
900 .left = OV5640_PIXEL_ARRAY_LEFT,
901 .top = OV5640_PIXEL_ARRAY_TOP,
902 .width = OV5640_PIXEL_ARRAY_WIDTH,
903 .height = OV5640_PIXEL_ARRAY_HEIGHT,
904 },
905 .crop = {
906 .left = 56,
907 .top = 60,
908 .width = 720,
909 .height = 480,
910 },
911 .htot = 1896,
912 .vblank_def = 1206,
913 },
914 .reg_data = ov5640_setting_low_res,
915 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
916 .max_fps = OV5640_30_FPS,
917 .def_fps = OV5640_30_FPS
918 }, {
919 /* 720x576 */
920 .id = OV5640_MODE_PAL_720_576,
921 .dn_mode = SUBSAMPLING,
922 .width = 720,
923 .height = 576,
924 .pixel_rate = OV5640_PIXEL_RATE_96M,
925 .dvp_timings = {
926 .analog_crop = {
927 .left = 0,
928 .top = 4,
929 .width = 2624,
930 .height = 1944,
931 },
932 .crop = {
933 .left = 56,
934 .top = 6,
935 .width = 720,
936 .height = 576,
937 },
938 .htot = 1896,
939 .vblank_def = 408,
940 },
941 .csi2_timings = {
942 /* Feed the full valid pixel array to the ISP. */
943 .analog_crop = {
944 .left = OV5640_PIXEL_ARRAY_LEFT,
945 .top = OV5640_PIXEL_ARRAY_TOP,
946 .width = OV5640_PIXEL_ARRAY_WIDTH,
947 .height = OV5640_PIXEL_ARRAY_HEIGHT,
948 },
949 .crop = {
950 .left = 56,
951 .top = 6,
952 .width = 720,
953 .height = 576,
954 },
955 .htot = 1896,
956 .vblank_def = 1110,
957 },
958 .reg_data = ov5640_setting_low_res,
959 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
960 .max_fps = OV5640_30_FPS,
961 .def_fps = OV5640_30_FPS
962 }, {
963 /* 1024x768 */
964 .id = OV5640_MODE_XGA_1024_768,
965 .dn_mode = SUBSAMPLING,
966 .pixel_rate = OV5640_PIXEL_RATE_96M,
967 .width = 1024,
968 .height = 768,
969 .dvp_timings = {
970 .analog_crop = {
971 .left = 0,
972 .top = 4,
973 .width = 2624,
974 .height = 1944,
975 },
976 .crop = {
977 .left = 16,
978 .top = 6,
979 .width = 1024,
980 .height = 768,
981 },
982 .htot = 1896,
983 .vblank_def = 312,
984 },
985 .csi2_timings = {
986 .analog_crop = {
987 .left = 0,
988 .top = 4,
989 .width = OV5640_NATIVE_WIDTH,
990 .height = OV5640_PIXEL_ARRAY_HEIGHT,
991 },
992 .crop = {
993 .left = 16,
994 .top = 6,
995 .width = 1024,
996 .height = 768,
997 },
998 .htot = 1896,
999 .vblank_def = 918,
1000 },
1001 .reg_data = ov5640_setting_low_res,
1002 .reg_data_size = ARRAY_SIZE(ov5640_setting_low_res),
1003 .max_fps = OV5640_30_FPS,
1004 .def_fps = OV5640_30_FPS
1005 }, {
1006 /* 1280x720 */
1007 .id = OV5640_MODE_720P_1280_720,
1008 .dn_mode = SUBSAMPLING,
1009 .pixel_rate = OV5640_PIXEL_RATE_124M,
1010 .width = 1280,
1011 .height = 720,
1012 .dvp_timings = {
1013 .analog_crop = {
1014 .left = 0,
1015 .top = 250,
1016 .width = 2624,
1017 .height = 1456,
1018 },
1019 .crop = {
1020 .left = 16,
1021 .top = 4,
1022 .width = 1280,
1023 .height = 720,
1024 },
1025 .htot = 1892,
1026 .vblank_def = 20,
1027 },
1028 .csi2_timings = {
1029 .analog_crop = {
1030 .left = 0,
1031 .top = 250,
1032 .width = 2624,
1033 .height = 1456,
1034 },
1035 .crop = {
1036 .left = 16,
1037 .top = 4,
1038 .width = 1280,
1039 .height = 720,
1040 },
1041 .htot = 1600,
1042 .vblank_def = 560,
1043 },
1044 .reg_data = ov5640_setting_720P_1280_720,
1045 .reg_data_size = ARRAY_SIZE(ov5640_setting_720P_1280_720),
1046 .max_fps = OV5640_30_FPS,
1047 .def_fps = OV5640_30_FPS
1048 }, {
1049 /* 1920x1080 */
1050 .id = OV5640_MODE_1080P_1920_1080,
1051 .dn_mode = SCALING,
1052 .pixel_rate = OV5640_PIXEL_RATE_148M,
1053 .width = 1920,
1054 .height = 1080,
1055 .dvp_timings = {
1056 .analog_crop = {
1057 .left = 336,
1058 .top = 434,
1059 .width = 1952,
1060 .height = 1088,
1061 },
1062 .crop = {
1063 .left = 16,
1064 .top = 4,
1065 .width = 1920,
1066 .height = 1080,
1067 },
1068 .htot = 2500,
1069 .vblank_def = 40,
1070 },
1071 .csi2_timings = {
1072 /* Crop the full valid pixel array in the center. */
1073 .analog_crop = {
1074 .left = 336,
1075 .top = 434,
1076 .width = 1952,
1077 .height = 1088,
1078 },
1079 /* Maintain a larger processing margins. */
1080 .crop = {
1081 .left = 16,
1082 .top = 4,
1083 .width = 1920,
1084 .height = 1080,
1085 },
1086 .htot = 2234,
1087 .vblank_def = 24,
1088 },
1089 .reg_data = ov5640_setting_1080P_1920_1080,
1090 .reg_data_size = ARRAY_SIZE(ov5640_setting_1080P_1920_1080),
1091 .max_fps = OV5640_30_FPS,
1092 .def_fps = OV5640_30_FPS
1093 }, {
1094 /* 2592x1944 */
1095 .id = OV5640_MODE_QSXGA_2592_1944,
1096 .dn_mode = SCALING,
1097 .pixel_rate = OV5640_PIXEL_RATE_168M,
1098 .width = OV5640_PIXEL_ARRAY_WIDTH,
1099 .height = OV5640_PIXEL_ARRAY_HEIGHT,
1100 .dvp_timings = {
1101 .analog_crop = {
1102 .left = 0,
1103 .top = 0,
1104 .width = 2624,
1105 .height = 1952,
1106 },
1107 .crop = {
1108 .left = 16,
1109 .top = 4,
1110 .width = 2592,
1111 .height = 1944,
1112 },
1113 .htot = 2844,
1114 .vblank_def = 24,
1115 },
1116 .csi2_timings = {
1117 /* Give more processing margin to full resolution. */
1118 .analog_crop = {
1119 .left = 0,
1120 .top = 0,
1121 .width = OV5640_NATIVE_WIDTH,
1122 .height = 1952,
1123 },
1124 .crop = {
1125 .left = 16,
1126 .top = 4,
1127 .width = 2592,
1128 .height = 1944,
1129 },
1130 .htot = 2844,
1131 .vblank_def = 24,
1132 },
1133 .reg_data = ov5640_setting_QSXGA_2592_1944,
1134 .reg_data_size = ARRAY_SIZE(ov5640_setting_QSXGA_2592_1944),
1135 .max_fps = OV5640_15_FPS,
1136 .def_fps = OV5640_15_FPS
1137 },
1138 };
1139
1140 static const struct ov5640_timings *
1141 ov5640_timings(const struct ov5640_dev *sensor,
1142 const struct ov5640_mode_info *mode)
1143 {
1144 if (ov5640_is_csi2(sensor))
1145 return &mode->csi2_timings;
1146
1147 return &mode->dvp_timings;
1148 }
1149
1150 static int ov5640_init_slave_id(struct ov5640_dev *sensor)
1151 {
1152 struct i2c_client *client = sensor->i2c_client;
1153 struct i2c_msg msg;
1154 u8 buf[3];
1155 int ret;
1156
1157 if (client->addr == OV5640_DEFAULT_SLAVE_ID)
1158 return 0;
1159
1160 buf[0] = OV5640_REG_SLAVE_ID >> 8;
1161 buf[1] = OV5640_REG_SLAVE_ID & 0xff;
1162 buf[2] = client->addr << 1;
1163
1164 msg.addr = OV5640_DEFAULT_SLAVE_ID;
1165 msg.flags = 0;
1166 msg.buf = buf;
1167 msg.len = sizeof(buf);
1168
1169 ret = i2c_transfer(client->adapter, &msg, 1);
1170 if (ret < 0) {
1171 dev_err(&client->dev, "%s: failed with %d\n", __func__, ret);
1172 return ret;
1173 }
1174
1175 return 0;
1176 }
1177
1178 static int ov5640_write_reg(struct ov5640_dev *sensor, u16 reg, u8 val)
1179 {
1180 struct i2c_client *client = sensor->i2c_client;
1181 struct i2c_msg msg;
1182 u8 buf[3];
1183 int ret;
1184
1185 buf[0] = reg >> 8;
1186 buf[1] = reg & 0xff;
1187 buf[2] = val;
1188
1189 msg.addr = client->addr;
1190 msg.flags = client->flags;
1191 msg.buf = buf;
1192 msg.len = sizeof(buf);
1193
1194 ret = i2c_transfer(client->adapter, &msg, 1);
1195 if (ret < 0) {
1196 dev_err(&client->dev, "%s: error: reg=%x, val=%x\n",
1197 __func__, reg, val);
1198 return ret;
1199 }
1200
1201 return 0;
1202 }
1203
1204 static int ov5640_read_reg(struct ov5640_dev *sensor, u16 reg, u8 *val)
1205 {
1206 struct i2c_client *client = sensor->i2c_client;
1207 struct i2c_msg msg[2];
1208 u8 buf[2];
1209 int ret;
1210
1211 buf[0] = reg >> 8;
1212 buf[1] = reg & 0xff;
1213
1214 msg[0].addr = client->addr;
1215 msg[0].flags = client->flags;
1216 msg[0].buf = buf;
1217 msg[0].len = sizeof(buf);
1218
1219 msg[1].addr = client->addr;
1220 msg[1].flags = client->flags | I2C_M_RD;
1221 msg[1].buf = buf;
1222 msg[1].len = 1;
1223
1224 ret = i2c_transfer(client->adapter, msg, 2);
1225 if (ret < 0) {
1226 dev_err(&client->dev, "%s: error: reg=%x\n",
1227 __func__, reg);
1228 return ret;
1229 }
1230
1231 *val = buf[0];
1232 return 0;
1233 }
1234
1235 static int ov5640_read_reg16(struct ov5640_dev *sensor, u16 reg, u16 *val)
1236 {
1237 u8 hi, lo;
1238 int ret;
1239
1240 ret = ov5640_read_reg(sensor, reg, &hi);
1241 if (ret)
1242 return ret;
1243 ret = ov5640_read_reg(sensor, reg + 1, &lo);
1244 if (ret)
1245 return ret;
1246
1247 *val = ((u16)hi << 8) | (u16)lo;
1248 return 0;
1249 }
1250
1251 static int ov5640_write_reg16(struct ov5640_dev *sensor, u16 reg, u16 val)
1252 {
1253 int ret;
1254
1255 ret = ov5640_write_reg(sensor, reg, val >> 8);
1256 if (ret)
1257 return ret;
1258
1259 return ov5640_write_reg(sensor, reg + 1, val & 0xff);
1260 }
1261
1262 static int ov5640_mod_reg(struct ov5640_dev *sensor, u16 reg,
1263 u8 mask, u8 val)
1264 {
1265 u8 readval;
1266 int ret;
1267
1268 ret = ov5640_read_reg(sensor, reg, &readval);
1269 if (ret)
1270 return ret;
1271
1272 readval &= ~mask;
1273 val &= mask;
1274 val |= readval;
1275
1276 return ov5640_write_reg(sensor, reg, val);
1277 }
1278
1279 /*
1280 * After trying the various combinations, reading various
1281 * documentations spread around the net, and from the various
1282 * feedback, the clock tree is probably as follows:
1283 *
1284 * +--------------+
1285 * | Ext. Clock |
1286 * +-+------------+
1287 * | +----------+
1288 * +->| PLL1 | - reg 0x3036, for the multiplier
1289 * +-+--------+ - reg 0x3037, bits 0-3 for the pre-divider
1290 * | +--------------+
1291 * +->| System Clock | - reg 0x3035, bits 4-7
1292 * +-+------------+
1293 * | +--------------+
1294 * +->| MIPI Divider | - reg 0x3035, bits 0-3
1295 * | +-+------------+
1296 * | +----------------> MIPI SCLK
1297 * | + +-----+
1298 * | +->| / 2 |-------> MIPI BIT CLK
1299 * | +-----+
1300 * | +--------------+
1301 * +->| PLL Root Div | - reg 0x3037, bit 4
1302 * +-+------------+
1303 * | +---------+
1304 * +->| Bit Div | - reg 0x3034, bits 0-3
1305 * +-+-------+
1306 * | +-------------+
1307 * +->| SCLK Div | - reg 0x3108, bits 0-1
1308 * | +-+-----------+
1309 * | +---------------> SCLK
1310 * | +-------------+
1311 * +->| SCLK 2X Div | - reg 0x3108, bits 2-3
1312 * | +-+-----------+
1313 * | +---------------> SCLK 2X
1314 * | +-------------+
1315 * +->| PCLK Div | - reg 0x3108, bits 4-5
1316 * ++------------+
1317 * + +-----------+
1318 * +->| P_DIV | - reg 0x3035, bits 0-3
1319 * +-----+-----+
1320 * +------------> PCLK
1321 *
1322 * There seems to be also constraints:
1323 * - the PLL pre-divider output rate should be in the 4-27MHz range
1324 * - the PLL multiplier output rate should be in the 500-1000MHz range
1325 * - PCLK >= SCLK * 2 in YUV, >= SCLK in Raw or JPEG
1326 */
1327
1328 /*
1329 * This is supposed to be ranging from 1 to 8, but the value is always
1330 * set to 3 in the vendor kernels.
1331 */
1332 #define OV5640_PLL_PREDIV 3
1333
1334 #define OV5640_PLL_MULT_MIN 4
1335 #define OV5640_PLL_MULT_MAX 252
1336
1337 /*
1338 * This is supposed to be ranging from 1 to 16, but the value is
1339 * always set to either 1 or 2 in the vendor kernels.
1340 */
1341 #define OV5640_SYSDIV_MIN 1
1342 #define OV5640_SYSDIV_MAX 16
1343
1344 /*
1345 * This is supposed to be ranging from 1 to 2, but the value is always
1346 * set to 2 in the vendor kernels.
1347 */
1348 #define OV5640_PLL_ROOT_DIV 2
1349 #define OV5640_PLL_CTRL3_PLL_ROOT_DIV_2 BIT(4)
1350
1351 /*
1352 * We only supports 8-bit formats at the moment
1353 */
1354 #define OV5640_BIT_DIV 2
1355 #define OV5640_PLL_CTRL0_MIPI_MODE_8BIT 0x08
1356
1357 /*
1358 * This is supposed to be ranging from 1 to 8, but the value is always
1359 * set to 2 in the vendor kernels.
1360 */
1361 #define OV5640_SCLK_ROOT_DIV 2
1362
1363 /*
1364 * This is hardcoded so that the consistency is maintained between SCLK and
1365 * SCLK 2x.
1366 */
1367 #define OV5640_SCLK2X_ROOT_DIV (OV5640_SCLK_ROOT_DIV / 2)
1368
1369 /*
1370 * This is supposed to be ranging from 1 to 8, but the value is always
1371 * set to 1 in the vendor kernels.
1372 */
1373 #define OV5640_PCLK_ROOT_DIV 1
1374 #define OV5640_PLL_SYS_ROOT_DIVIDER_BYPASS 0x00
1375
1376 static unsigned long ov5640_compute_sys_clk(struct ov5640_dev *sensor,
1377 u8 pll_prediv, u8 pll_mult,
1378 u8 sysdiv)
1379 {
1380 unsigned long sysclk = sensor->xclk_freq / pll_prediv * pll_mult;
1381
1382 /* PLL1 output cannot exceed 1GHz. */
1383 if (sysclk / 1000000 > 1000)
1384 return 0;
1385
1386 return sysclk / sysdiv;
1387 }
1388
1389 static unsigned long ov5640_calc_sys_clk(struct ov5640_dev *sensor,
1390 unsigned long rate,
1391 u8 *pll_prediv, u8 *pll_mult,
1392 u8 *sysdiv)
1393 {
1394 unsigned long best = ~0;
1395 u8 best_sysdiv = 1, best_mult = 1;
1396 u8 _sysdiv, _pll_mult;
1397
1398 for (_sysdiv = OV5640_SYSDIV_MIN;
1399 _sysdiv <= OV5640_SYSDIV_MAX;
1400 _sysdiv++) {
1401 for (_pll_mult = OV5640_PLL_MULT_MIN;
1402 _pll_mult <= OV5640_PLL_MULT_MAX;
1403 _pll_mult++) {
1404 unsigned long _rate;
1405
1406 /*
1407 * The PLL multiplier cannot be odd if above
1408 * 127.
1409 */
1410 if (_pll_mult > 127 && (_pll_mult % 2))
1411 continue;
1412
1413 _rate = ov5640_compute_sys_clk(sensor,
1414 OV5640_PLL_PREDIV,
1415 _pll_mult, _sysdiv);
1416
1417 /*
1418 * We have reached the maximum allowed PLL1 output,
1419 * increase sysdiv.
1420 */
1421 if (!_rate)
1422 break;
1423
1424 /*
1425 * Prefer rates above the expected clock rate than
1426 * below, even if that means being less precise.
1427 */
1428 if (_rate < rate)
1429 continue;
1430
1431 if (abs(rate - _rate) < abs(rate - best)) {
1432 best = _rate;
1433 best_sysdiv = _sysdiv;
1434 best_mult = _pll_mult;
1435 }
1436
1437 if (_rate == rate)
1438 goto out;
1439 }
1440 }
1441
1442 out:
1443 *sysdiv = best_sysdiv;
1444 *pll_prediv = OV5640_PLL_PREDIV;
1445 *pll_mult = best_mult;
1446
1447 return best;
1448 }
1449
1450 /*
1451 * ov5640_set_mipi_pclk() - Calculate the clock tree configuration values
1452 * for the MIPI CSI-2 output.
1453 */
1454 static int ov5640_set_mipi_pclk(struct ov5640_dev *sensor)
1455 {
1456 u8 bit_div, mipi_div, pclk_div, sclk_div, sclk2x_div, root_div;
1457 u8 prediv, mult, sysdiv;
1458 unsigned long link_freq;
1459 unsigned long sysclk;
1460 u8 pclk_period;
1461 u32 sample_rate;
1462 u32 num_lanes;
1463 int ret;
1464
1465 /* Use the link freq computed at ov5640_update_pixel_rate() time. */
1466 link_freq = sensor->current_link_freq;
1467
1468 /*
1469 * - mipi_div - Additional divider for the MIPI lane clock.
1470 *
1471 * Higher link frequencies would make sysclk > 1GHz.
1472 * Keep the sysclk low and do not divide in the MIPI domain.
1473 */
1474 if (link_freq > OV5640_LINK_RATE_MAX)
1475 mipi_div = 1;
1476 else
1477 mipi_div = 2;
1478
1479 sysclk = link_freq * mipi_div;
1480 ov5640_calc_sys_clk(sensor, sysclk, &prediv, &mult, &sysdiv);
1481
1482 /*
1483 * Adjust PLL parameters to maintain the MIPI_SCLK-to-PCLK ratio.
1484 *
1485 * - root_div = 2 (fixed)
1486 * - bit_div : MIPI 8-bit = 2; MIPI 10-bit = 2.5
1487 * - pclk_div = 1 (fixed)
1488 * - p_div = (2 lanes ? mipi_div : 2 * mipi_div)
1489 *
1490 * This results in the following MIPI_SCLK depending on the number
1491 * of lanes:
1492 *
1493 * - 2 lanes: MIPI_SCLK = (4 or 5) * PCLK
1494 * - 1 lanes: MIPI_SCLK = (8 or 10) * PCLK
1495 */
1496 root_div = OV5640_PLL_CTRL3_PLL_ROOT_DIV_2;
1497 bit_div = OV5640_PLL_CTRL0_MIPI_MODE_8BIT;
1498 pclk_div = ilog2(OV5640_PCLK_ROOT_DIV);
1499
1500 /*
1501 * Scaler clock:
1502 * - YUV: PCLK >= 2 * SCLK
1503 * - RAW or JPEG: PCLK >= SCLK
1504 * - sclk2x_div = sclk_div / 2
1505 */
1506 sclk_div = ilog2(OV5640_SCLK_ROOT_DIV);
1507 sclk2x_div = ilog2(OV5640_SCLK2X_ROOT_DIV);
1508
1509 /*
1510 * Set the pixel clock period expressed in ns with 1-bit decimal
1511 * (0x01=0.5ns).
1512 *
1513 * The register is very briefly documented. In the OV5645 datasheet it
1514 * is described as (2 * pclk period), and from testing it seems the
1515 * actual definition is 2 * 8-bit sample period.
1516 *
1517 * 2 * sample_period = (mipi_clk * 2 * num_lanes / bpp) * (bpp / 8) / 2
1518 */
1519 num_lanes = sensor->ep.bus.mipi_csi2.num_data_lanes;
1520 sample_rate = (link_freq * mipi_div * num_lanes * 2) / 16;
1521 pclk_period = 2000000000UL / sample_rate;
1522
1523 /* Program the clock tree registers. */
1524 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0, 0x0f, bit_div);
1525 if (ret)
1526 return ret;
1527
1528 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1, 0xff,
1529 (sysdiv << 4) | mipi_div);
1530 if (ret)
1531 return ret;
1532
1533 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2, 0xff, mult);
1534 if (ret)
1535 return ret;
1536
1537 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3, 0x1f,
1538 root_div | prediv);
1539 if (ret)
1540 return ret;
1541
1542 ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f,
1543 (pclk_div << 4) | (sclk2x_div << 2) | sclk_div);
1544 if (ret)
1545 return ret;
1546
1547 return ov5640_write_reg(sensor, OV5640_REG_PCLK_PERIOD, pclk_period);
1548 }
1549
1550 static u32 ov5640_calc_pixel_rate(struct ov5640_dev *sensor)
1551 {
1552 const struct ov5640_mode_info *mode = sensor->current_mode;
1553 const struct ov5640_timings *timings = &mode->dvp_timings;
1554 u32 rate;
1555
1556 rate = timings->htot * (timings->crop.height + timings->vblank_def);
1557 rate *= ov5640_framerates[sensor->current_fr];
1558
1559 return rate;
1560 }
1561
1562 static unsigned long ov5640_calc_pclk(struct ov5640_dev *sensor,
1563 unsigned long rate,
1564 u8 *pll_prediv, u8 *pll_mult, u8 *sysdiv,
1565 u8 *pll_rdiv, u8 *bit_div, u8 *pclk_div)
1566 {
1567 unsigned long _rate = rate * OV5640_PLL_ROOT_DIV * OV5640_BIT_DIV *
1568 OV5640_PCLK_ROOT_DIV;
1569
1570 _rate = ov5640_calc_sys_clk(sensor, _rate, pll_prediv, pll_mult,
1571 sysdiv);
1572 *pll_rdiv = OV5640_PLL_ROOT_DIV;
1573 *bit_div = OV5640_BIT_DIV;
1574 *pclk_div = OV5640_PCLK_ROOT_DIV;
1575
1576 return _rate / *pll_rdiv / *bit_div / *pclk_div;
1577 }
1578
1579 static int ov5640_set_dvp_pclk(struct ov5640_dev *sensor)
1580 {
1581 u8 prediv, mult, sysdiv, pll_rdiv, bit_div, pclk_div;
1582 u32 rate;
1583 int ret;
1584
1585 rate = ov5640_calc_pixel_rate(sensor);
1586 rate *= ov5640_code_to_bpp(sensor, sensor->fmt.code);
1587 rate /= sensor->ep.bus.parallel.bus_width;
1588
1589 ov5640_calc_pclk(sensor, rate, &prediv, &mult, &sysdiv, &pll_rdiv,
1590 &bit_div, &pclk_div);
1591
1592 if (bit_div == 2)
1593 bit_div = 8;
1594
1595 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL0,
1596 0x0f, bit_div);
1597 if (ret)
1598 return ret;
1599
1600 /*
1601 * We need to set sysdiv according to the clock, and to clear
1602 * the MIPI divider.
1603 */
1604 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL1,
1605 0xff, sysdiv << 4);
1606 if (ret)
1607 return ret;
1608
1609 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL2,
1610 0xff, mult);
1611 if (ret)
1612 return ret;
1613
1614 ret = ov5640_mod_reg(sensor, OV5640_REG_SC_PLL_CTRL3,
1615 0x1f, prediv | ((pll_rdiv - 1) << 4));
1616 if (ret)
1617 return ret;
1618
1619 return ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x30,
1620 (ilog2(pclk_div) << 4));
1621 }
1622
1623 /* set JPEG framing sizes */
1624 static int ov5640_set_jpeg_timings(struct ov5640_dev *sensor,
1625 const struct ov5640_mode_info *mode)
1626 {
1627 int ret;
1628
1629 /*
1630 * compression mode 3 timing
1631 *
1632 * Data is transmitted with programmable width (VFIFO_HSIZE).
1633 * No padding done. Last line may have less data. Varying
1634 * number of lines per frame, depending on amount of data.
1635 */
1636 ret = ov5640_mod_reg(sensor, OV5640_REG_JPG_MODE_SELECT, 0x7, 0x3);
1637 if (ret < 0)
1638 return ret;
1639
1640 ret = ov5640_write_reg16(sensor, OV5640_REG_VFIFO_HSIZE, mode->width);
1641 if (ret < 0)
1642 return ret;
1643
1644 return ov5640_write_reg16(sensor, OV5640_REG_VFIFO_VSIZE, mode->height);
1645 }
1646
1647 /* download ov5640 settings to sensor through i2c */
1648 static int ov5640_set_timings(struct ov5640_dev *sensor,
1649 const struct ov5640_mode_info *mode)
1650 {
1651 const struct ov5640_timings *timings;
1652 const struct v4l2_rect *analog_crop;
1653 const struct v4l2_rect *crop;
1654 int ret;
1655
1656 if (sensor->fmt.code == MEDIA_BUS_FMT_JPEG_1X8) {
1657 ret = ov5640_set_jpeg_timings(sensor, mode);
1658 if (ret < 0)
1659 return ret;
1660 }
1661
1662 timings = ov5640_timings(sensor, mode);
1663 analog_crop = &timings->analog_crop;
1664 crop = &timings->crop;
1665
1666 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HS,
1667 analog_crop->left);
1668 if (ret < 0)
1669 return ret;
1670
1671 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VS,
1672 analog_crop->top);
1673 if (ret < 0)
1674 return ret;
1675
1676 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HW,
1677 analog_crop->left + analog_crop->width - 1);
1678 if (ret < 0)
1679 return ret;
1680
1681 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VH,
1682 analog_crop->top + analog_crop->height - 1);
1683 if (ret < 0)
1684 return ret;
1685
1686 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HOFFS, crop->left);
1687 if (ret < 0)
1688 return ret;
1689
1690 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VOFFS, crop->top);
1691 if (ret < 0)
1692 return ret;
1693
1694 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPHO, mode->width);
1695 if (ret < 0)
1696 return ret;
1697
1698 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_DVPVO, mode->height);
1699 if (ret < 0)
1700 return ret;
1701
1702 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_HTS, timings->htot);
1703 if (ret < 0)
1704 return ret;
1705
1706 ret = ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS,
1707 mode->height + timings->vblank_def);
1708 if (ret < 0)
1709 return ret;
1710
1711 return 0;
1712 }
1713
1714 static void ov5640_load_regs(struct ov5640_dev *sensor,
1715 const struct reg_value *regs, unsigned int regnum)
1716 {
1717 unsigned int i;
1718 u32 delay_ms;
1719 u16 reg_addr;
1720 u8 mask, val;
1721 int ret = 0;
1722
1723 for (i = 0; i < regnum; ++i, ++regs) {
1724 delay_ms = regs->delay_ms;
1725 reg_addr = regs->reg_addr;
1726 val = regs->val;
1727 mask = regs->mask;
1728
1729 /* remain in power down mode for DVP */
1730 if (regs->reg_addr == OV5640_REG_SYS_CTRL0 &&
1731 val == OV5640_REG_SYS_CTRL0_SW_PWUP &&
1732 !ov5640_is_csi2(sensor))
1733 continue;
1734
1735 if (mask)
1736 ret = ov5640_mod_reg(sensor, reg_addr, mask, val);
1737 else
1738 ret = ov5640_write_reg(sensor, reg_addr, val);
1739 if (ret)
1740 break;
1741
1742 if (delay_ms)
1743 usleep_range(1000 * delay_ms, 1000 * delay_ms + 100);
1744 }
1745 }
1746
1747 static int ov5640_set_autoexposure(struct ov5640_dev *sensor, bool on)
1748 {
1749 return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
1750 BIT(0), on ? 0 : BIT(0));
1751 }
1752
1753 /* read exposure, in number of line periods */
1754 static int ov5640_get_exposure(struct ov5640_dev *sensor)
1755 {
1756 int exp, ret;
1757 u8 temp;
1758
1759 ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_HI, &temp);
1760 if (ret)
1761 return ret;
1762 exp = ((int)temp & 0x0f) << 16;
1763 ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_MED, &temp);
1764 if (ret)
1765 return ret;
1766 exp |= ((int)temp << 8);
1767 ret = ov5640_read_reg(sensor, OV5640_REG_AEC_PK_EXPOSURE_LO, &temp);
1768 if (ret)
1769 return ret;
1770 exp |= (int)temp;
1771
1772 return exp >> 4;
1773 }
1774
1775 /* write exposure, given number of line periods */
1776 static int ov5640_set_exposure(struct ov5640_dev *sensor, u32 exposure)
1777 {
1778 int ret;
1779
1780 exposure <<= 4;
1781
1782 ret = ov5640_write_reg(sensor,
1783 OV5640_REG_AEC_PK_EXPOSURE_LO,
1784 exposure & 0xff);
1785 if (ret)
1786 return ret;
1787 ret = ov5640_write_reg(sensor,
1788 OV5640_REG_AEC_PK_EXPOSURE_MED,
1789 (exposure >> 8) & 0xff);
1790 if (ret)
1791 return ret;
1792 return ov5640_write_reg(sensor,
1793 OV5640_REG_AEC_PK_EXPOSURE_HI,
1794 (exposure >> 16) & 0x0f);
1795 }
1796
1797 static int ov5640_get_gain(struct ov5640_dev *sensor)
1798 {
1799 u16 gain;
1800 int ret;
1801
1802 ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN, &gain);
1803 if (ret)
1804 return ret;
1805
1806 return gain & 0x3ff;
1807 }
1808
1809 static int ov5640_set_gain(struct ov5640_dev *sensor, int gain)
1810 {
1811 return ov5640_write_reg16(sensor, OV5640_REG_AEC_PK_REAL_GAIN,
1812 (u16)gain & 0x3ff);
1813 }
1814
1815 static int ov5640_set_autogain(struct ov5640_dev *sensor, bool on)
1816 {
1817 return ov5640_mod_reg(sensor, OV5640_REG_AEC_PK_MANUAL,
1818 BIT(1), on ? 0 : BIT(1));
1819 }
1820
1821 static int ov5640_set_stream_dvp(struct ov5640_dev *sensor, bool on)
1822 {
1823 return ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0, on ?
1824 OV5640_REG_SYS_CTRL0_SW_PWUP :
1825 OV5640_REG_SYS_CTRL0_SW_PWDN);
1826 }
1827
1828 static int ov5640_set_stream_mipi(struct ov5640_dev *sensor, bool on)
1829 {
1830 int ret;
1831
1832 /*
1833 * Enable/disable the MIPI interface
1834 *
1835 * 0x300e = on ? 0x45 : 0x40
1836 *
1837 * FIXME: the sensor manual (version 2.03) reports
1838 * [7:5] = 000 : 1 data lane mode
1839 * [7:5] = 001 : 2 data lanes mode
1840 * But this settings do not work, while the following ones
1841 * have been validated for 2 data lanes mode.
1842 *
1843 * [7:5] = 010 : 2 data lanes mode
1844 * [4] = 0 : Power up MIPI HS Tx
1845 * [3] = 0 : Power up MIPI LS Rx
1846 * [2] = 1/0 : MIPI interface enable/disable
1847 * [1:0] = 01/00: FIXME: 'debug'
1848 */
1849 ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00,
1850 on ? 0x45 : 0x40);
1851 if (ret)
1852 return ret;
1853
1854 return ov5640_write_reg(sensor, OV5640_REG_FRAME_CTRL01,
1855 on ? 0x00 : 0x0f);
1856 }
1857
1858 static int ov5640_get_sysclk(struct ov5640_dev *sensor)
1859 {
1860 /* calculate sysclk */
1861 u32 xvclk = sensor->xclk_freq / 10000;
1862 u32 multiplier, prediv, VCO, sysdiv, pll_rdiv;
1863 u32 sclk_rdiv_map[] = {1, 2, 4, 8};
1864 u32 bit_div2x = 1, sclk_rdiv, sysclk;
1865 u8 temp1, temp2;
1866 int ret;
1867
1868 ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL0, &temp1);
1869 if (ret)
1870 return ret;
1871 temp2 = temp1 & 0x0f;
1872 if (temp2 == 8 || temp2 == 10)
1873 bit_div2x = temp2 / 2;
1874
1875 ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL1, &temp1);
1876 if (ret)
1877 return ret;
1878 sysdiv = temp1 >> 4;
1879 if (sysdiv == 0)
1880 sysdiv = 16;
1881
1882 ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL2, &temp1);
1883 if (ret)
1884 return ret;
1885 multiplier = temp1;
1886
1887 ret = ov5640_read_reg(sensor, OV5640_REG_SC_PLL_CTRL3, &temp1);
1888 if (ret)
1889 return ret;
1890 prediv = temp1 & 0x0f;
1891 pll_rdiv = ((temp1 >> 4) & 0x01) + 1;
1892
1893 ret = ov5640_read_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, &temp1);
1894 if (ret)
1895 return ret;
1896 temp2 = temp1 & 0x03;
1897 sclk_rdiv = sclk_rdiv_map[temp2];
1898
1899 if (!prediv || !sysdiv || !pll_rdiv || !bit_div2x)
1900 return -EINVAL;
1901
1902 VCO = xvclk * multiplier / prediv;
1903
1904 sysclk = VCO / sysdiv / pll_rdiv * 2 / bit_div2x / sclk_rdiv;
1905
1906 return sysclk;
1907 }
1908
1909 static int ov5640_set_night_mode(struct ov5640_dev *sensor)
1910 {
1911 /* read HTS from register settings */
1912 u8 mode;
1913 int ret;
1914
1915 ret = ov5640_read_reg(sensor, OV5640_REG_AEC_CTRL00, &mode);
1916 if (ret)
1917 return ret;
1918 mode &= 0xfb;
1919 return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL00, mode);
1920 }
1921
1922 static int ov5640_get_hts(struct ov5640_dev *sensor)
1923 {
1924 /* read HTS from register settings */
1925 u16 hts;
1926 int ret;
1927
1928 ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_HTS, &hts);
1929 if (ret)
1930 return ret;
1931 return hts;
1932 }
1933
1934 static int ov5640_get_vts(struct ov5640_dev *sensor)
1935 {
1936 u16 vts;
1937 int ret;
1938
1939 ret = ov5640_read_reg16(sensor, OV5640_REG_TIMING_VTS, &vts);
1940 if (ret)
1941 return ret;
1942 return vts;
1943 }
1944
1945 static int ov5640_set_vts(struct ov5640_dev *sensor, int vts)
1946 {
1947 return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS, vts);
1948 }
1949
1950 static int ov5640_get_light_freq(struct ov5640_dev *sensor)
1951 {
1952 /* get banding filter value */
1953 int ret, light_freq = 0;
1954 u8 temp, temp1;
1955
1956 ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL01, &temp);
1957 if (ret)
1958 return ret;
1959
1960 if (temp & 0x80) {
1961 /* manual */
1962 ret = ov5640_read_reg(sensor, OV5640_REG_HZ5060_CTRL00,
1963 &temp1);
1964 if (ret)
1965 return ret;
1966 if (temp1 & 0x04) {
1967 /* 50Hz */
1968 light_freq = 50;
1969 } else {
1970 /* 60Hz */
1971 light_freq = 60;
1972 }
1973 } else {
1974 /* auto */
1975 ret = ov5640_read_reg(sensor, OV5640_REG_SIGMADELTA_CTRL0C,
1976 &temp1);
1977 if (ret)
1978 return ret;
1979
1980 if (temp1 & 0x01) {
1981 /* 50Hz */
1982 light_freq = 50;
1983 } else {
1984 /* 60Hz */
1985 }
1986 }
1987
1988 return light_freq;
1989 }
1990
1991 static int ov5640_set_bandingfilter(struct ov5640_dev *sensor)
1992 {
1993 u32 band_step60, max_band60, band_step50, max_band50, prev_vts;
1994 int ret;
1995
1996 /* read preview PCLK */
1997 ret = ov5640_get_sysclk(sensor);
1998 if (ret < 0)
1999 return ret;
2000 if (ret == 0)
2001 return -EINVAL;
2002 sensor->prev_sysclk = ret;
2003 /* read preview HTS */
2004 ret = ov5640_get_hts(sensor);
2005 if (ret < 0)
2006 return ret;
2007 if (ret == 0)
2008 return -EINVAL;
2009 sensor->prev_hts = ret;
2010
2011 /* read preview VTS */
2012 ret = ov5640_get_vts(sensor);
2013 if (ret < 0)
2014 return ret;
2015 prev_vts = ret;
2016
2017 /* calculate banding filter */
2018 /* 60Hz */
2019 band_step60 = sensor->prev_sysclk * 100 / sensor->prev_hts * 100 / 120;
2020 ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B60_STEP, band_step60);
2021 if (ret)
2022 return ret;
2023 if (!band_step60)
2024 return -EINVAL;
2025 max_band60 = (int)((prev_vts - 4) / band_step60);
2026 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0D, max_band60);
2027 if (ret)
2028 return ret;
2029
2030 /* 50Hz */
2031 band_step50 = sensor->prev_sysclk * 100 / sensor->prev_hts;
2032 ret = ov5640_write_reg16(sensor, OV5640_REG_AEC_B50_STEP, band_step50);
2033 if (ret)
2034 return ret;
2035 if (!band_step50)
2036 return -EINVAL;
2037 max_band50 = (int)((prev_vts - 4) / band_step50);
2038 return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0E, max_band50);
2039 }
2040
2041 static int ov5640_set_ae_target(struct ov5640_dev *sensor, int target)
2042 {
2043 /* stable in high */
2044 u32 fast_high, fast_low;
2045 int ret;
2046
2047 sensor->ae_low = target * 23 / 25; /* 0.92 */
2048 sensor->ae_high = target * 27 / 25; /* 1.08 */
2049
2050 fast_high = sensor->ae_high << 1;
2051 if (fast_high > 255)
2052 fast_high = 255;
2053
2054 fast_low = sensor->ae_low >> 1;
2055
2056 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL0F, sensor->ae_high);
2057 if (ret)
2058 return ret;
2059 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL10, sensor->ae_low);
2060 if (ret)
2061 return ret;
2062 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1B, sensor->ae_high);
2063 if (ret)
2064 return ret;
2065 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1E, sensor->ae_low);
2066 if (ret)
2067 return ret;
2068 ret = ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL11, fast_high);
2069 if (ret)
2070 return ret;
2071 return ov5640_write_reg(sensor, OV5640_REG_AEC_CTRL1F, fast_low);
2072 }
2073
2074 static int ov5640_get_binning(struct ov5640_dev *sensor)
2075 {
2076 u8 temp;
2077 int ret;
2078
2079 ret = ov5640_read_reg(sensor, OV5640_REG_TIMING_TC_REG21, &temp);
2080 if (ret)
2081 return ret;
2082
2083 return temp & BIT(0);
2084 }
2085
2086 static int ov5640_set_binning(struct ov5640_dev *sensor, bool enable)
2087 {
2088 int ret;
2089
2090 /*
2091 * TIMING TC REG21:
2092 * - [0]: Horizontal binning enable
2093 */
2094 ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
2095 BIT(0), enable ? BIT(0) : 0);
2096 if (ret)
2097 return ret;
2098 /*
2099 * TIMING TC REG20:
2100 * - [0]: Undocumented, but hardcoded init sequences
2101 * are always setting REG21/REG20 bit 0 to same value...
2102 */
2103 return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
2104 BIT(0), enable ? BIT(0) : 0);
2105 }
2106
2107 static int ov5640_set_virtual_channel(struct ov5640_dev *sensor)
2108 {
2109 struct i2c_client *client = sensor->i2c_client;
2110 u8 temp, channel = virtual_channel;
2111 int ret;
2112
2113 if (channel > 3) {
2114 dev_err(&client->dev,
2115 "%s: wrong virtual_channel parameter, expected (0..3), got %d\n",
2116 __func__, channel);
2117 return -EINVAL;
2118 }
2119
2120 ret = ov5640_read_reg(sensor, OV5640_REG_DEBUG_MODE, &temp);
2121 if (ret)
2122 return ret;
2123 temp &= ~(3 << 6);
2124 temp |= (channel << 6);
2125 return ov5640_write_reg(sensor, OV5640_REG_DEBUG_MODE, temp);
2126 }
2127
2128 static const struct ov5640_mode_info *
2129 ov5640_find_mode(struct ov5640_dev *sensor, int width, int height, bool nearest)
2130 {
2131 const struct ov5640_mode_info *mode;
2132
2133 mode = v4l2_find_nearest_size(ov5640_mode_data,
2134 ARRAY_SIZE(ov5640_mode_data),
2135 width, height, width, height);
2136
2137 if (!mode ||
2138 (!nearest &&
2139 (mode->width != width || mode->height != height)))
2140 return NULL;
2141
2142 return mode;
2143 }
2144
2145 /*
2146 * sensor changes between scaling and subsampling, go through
2147 * exposure calculation
2148 */
2149 static int ov5640_set_mode_exposure_calc(struct ov5640_dev *sensor,
2150 const struct ov5640_mode_info *mode)
2151 {
2152 u32 prev_shutter, prev_gain16;
2153 u32 cap_shutter, cap_gain16;
2154 u32 cap_sysclk, cap_hts, cap_vts;
2155 u32 light_freq, cap_bandfilt, cap_maxband;
2156 u32 cap_gain16_shutter;
2157 u8 average;
2158 int ret;
2159
2160 if (!mode->reg_data)
2161 return -EINVAL;
2162
2163 /* read preview shutter */
2164 ret = ov5640_get_exposure(sensor);
2165 if (ret < 0)
2166 return ret;
2167 prev_shutter = ret;
2168 ret = ov5640_get_binning(sensor);
2169 if (ret < 0)
2170 return ret;
2171 if (ret && mode->id != OV5640_MODE_720P_1280_720 &&
2172 mode->id != OV5640_MODE_1080P_1920_1080)
2173 prev_shutter *= 2;
2174
2175 /* read preview gain */
2176 ret = ov5640_get_gain(sensor);
2177 if (ret < 0)
2178 return ret;
2179 prev_gain16 = ret;
2180
2181 /* get average */
2182 ret = ov5640_read_reg(sensor, OV5640_REG_AVG_READOUT, &average);
2183 if (ret)
2184 return ret;
2185
2186 /* turn off night mode for capture */
2187 ret = ov5640_set_night_mode(sensor);
2188 if (ret < 0)
2189 return ret;
2190
2191 /* Write capture setting */
2192 ov5640_load_regs(sensor, mode->reg_data, mode->reg_data_size);
2193 ret = ov5640_set_timings(sensor, mode);
2194 if (ret < 0)
2195 return ret;
2196
2197 /* read capture VTS */
2198 ret = ov5640_get_vts(sensor);
2199 if (ret < 0)
2200 return ret;
2201 cap_vts = ret;
2202 ret = ov5640_get_hts(sensor);
2203 if (ret < 0)
2204 return ret;
2205 if (ret == 0)
2206 return -EINVAL;
2207 cap_hts = ret;
2208
2209 ret = ov5640_get_sysclk(sensor);
2210 if (ret < 0)
2211 return ret;
2212 if (ret == 0)
2213 return -EINVAL;
2214 cap_sysclk = ret;
2215
2216 /* calculate capture banding filter */
2217 ret = ov5640_get_light_freq(sensor);
2218 if (ret < 0)
2219 return ret;
2220 light_freq = ret;
2221
2222 if (light_freq == 60) {
2223 /* 60Hz */
2224 cap_bandfilt = cap_sysclk * 100 / cap_hts * 100 / 120;
2225 } else {
2226 /* 50Hz */
2227 cap_bandfilt = cap_sysclk * 100 / cap_hts;
2228 }
2229
2230 if (!sensor->prev_sysclk) {
2231 ret = ov5640_get_sysclk(sensor);
2232 if (ret < 0)
2233 return ret;
2234 if (ret == 0)
2235 return -EINVAL;
2236 sensor->prev_sysclk = ret;
2237 }
2238
2239 if (!cap_bandfilt)
2240 return -EINVAL;
2241
2242 cap_maxband = (int)((cap_vts - 4) / cap_bandfilt);
2243
2244 /* calculate capture shutter/gain16 */
2245 if (average > sensor->ae_low && average < sensor->ae_high) {
2246 /* in stable range */
2247 cap_gain16_shutter =
2248 prev_gain16 * prev_shutter *
2249 cap_sysclk / sensor->prev_sysclk *
2250 sensor->prev_hts / cap_hts *
2251 sensor->ae_target / average;
2252 } else {
2253 cap_gain16_shutter =
2254 prev_gain16 * prev_shutter *
2255 cap_sysclk / sensor->prev_sysclk *
2256 sensor->prev_hts / cap_hts;
2257 }
2258
2259 /* gain to shutter */
2260 if (cap_gain16_shutter < (cap_bandfilt * 16)) {
2261 /* shutter < 1/100 */
2262 cap_shutter = cap_gain16_shutter / 16;
2263 if (cap_shutter < 1)
2264 cap_shutter = 1;
2265
2266 cap_gain16 = cap_gain16_shutter / cap_shutter;
2267 if (cap_gain16 < 16)
2268 cap_gain16 = 16;
2269 } else {
2270 if (cap_gain16_shutter > (cap_bandfilt * cap_maxband * 16)) {
2271 /* exposure reach max */
2272 cap_shutter = cap_bandfilt * cap_maxband;
2273 if (!cap_shutter)
2274 return -EINVAL;
2275
2276 cap_gain16 = cap_gain16_shutter / cap_shutter;
2277 } else {
2278 /* 1/100 < (cap_shutter = n/100) =< max */
2279 cap_shutter =
2280 ((int)(cap_gain16_shutter / 16 / cap_bandfilt))
2281 * cap_bandfilt;
2282 if (!cap_shutter)
2283 return -EINVAL;
2284
2285 cap_gain16 = cap_gain16_shutter / cap_shutter;
2286 }
2287 }
2288
2289 /* set capture gain */
2290 ret = ov5640_set_gain(sensor, cap_gain16);
2291 if (ret)
2292 return ret;
2293
2294 /* write capture shutter */
2295 if (cap_shutter > (cap_vts - 4)) {
2296 cap_vts = cap_shutter + 4;
2297 ret = ov5640_set_vts(sensor, cap_vts);
2298 if (ret < 0)
2299 return ret;
2300 }
2301
2302 /* set exposure */
2303 return ov5640_set_exposure(sensor, cap_shutter);
2304 }
2305
2306 /*
2307 * if sensor changes inside scaling or subsampling
2308 * change mode directly
2309 */
2310 static int ov5640_set_mode_direct(struct ov5640_dev *sensor,
2311 const struct ov5640_mode_info *mode)
2312 {
2313 if (!mode->reg_data)
2314 return -EINVAL;
2315
2316 /* Write capture setting */
2317 ov5640_load_regs(sensor, mode->reg_data, mode->reg_data_size);
2318 return ov5640_set_timings(sensor, mode);
2319 }
2320
2321 static int ov5640_set_mode(struct ov5640_dev *sensor)
2322 {
2323 const struct ov5640_mode_info *mode = sensor->current_mode;
2324 const struct ov5640_mode_info *orig_mode = sensor->last_mode;
2325 enum ov5640_downsize_mode dn_mode, orig_dn_mode;
2326 bool auto_gain = sensor->ctrls.auto_gain->val == 1;
2327 bool auto_exp = sensor->ctrls.auto_exp->val == V4L2_EXPOSURE_AUTO;
2328 int ret;
2329
2330 dn_mode = mode->dn_mode;
2331 orig_dn_mode = orig_mode->dn_mode;
2332
2333 /* auto gain and exposure must be turned off when changing modes */
2334 if (auto_gain) {
2335 ret = ov5640_set_autogain(sensor, false);
2336 if (ret)
2337 return ret;
2338 }
2339
2340 if (auto_exp) {
2341 ret = ov5640_set_autoexposure(sensor, false);
2342 if (ret)
2343 goto restore_auto_gain;
2344 }
2345
2346 if (ov5640_is_csi2(sensor))
2347 ret = ov5640_set_mipi_pclk(sensor);
2348 else
2349 ret = ov5640_set_dvp_pclk(sensor);
2350 if (ret < 0)
2351 return 0;
2352
2353 if ((dn_mode == SUBSAMPLING && orig_dn_mode == SCALING) ||
2354 (dn_mode == SCALING && orig_dn_mode == SUBSAMPLING)) {
2355 /*
2356 * change between subsampling and scaling
2357 * go through exposure calculation
2358 */
2359 ret = ov5640_set_mode_exposure_calc(sensor, mode);
2360 } else {
2361 /*
2362 * change inside subsampling or scaling
2363 * download firmware directly
2364 */
2365 ret = ov5640_set_mode_direct(sensor, mode);
2366 }
2367 if (ret < 0)
2368 goto restore_auto_exp_gain;
2369
2370 /* restore auto gain and exposure */
2371 if (auto_gain)
2372 ov5640_set_autogain(sensor, true);
2373 if (auto_exp)
2374 ov5640_set_autoexposure(sensor, true);
2375
2376 ret = ov5640_set_binning(sensor, dn_mode != SCALING);
2377 if (ret < 0)
2378 return ret;
2379 ret = ov5640_set_ae_target(sensor, sensor->ae_target);
2380 if (ret < 0)
2381 return ret;
2382 ret = ov5640_get_light_freq(sensor);
2383 if (ret < 0)
2384 return ret;
2385 ret = ov5640_set_bandingfilter(sensor);
2386 if (ret < 0)
2387 return ret;
2388 ret = ov5640_set_virtual_channel(sensor);
2389 if (ret < 0)
2390 return ret;
2391
2392 sensor->pending_mode_change = false;
2393 sensor->last_mode = mode;
2394
2395 return 0;
2396
2397 restore_auto_exp_gain:
2398 if (auto_exp)
2399 ov5640_set_autoexposure(sensor, true);
2400 restore_auto_gain:
2401 if (auto_gain)
2402 ov5640_set_autogain(sensor, true);
2403
2404 return ret;
2405 }
2406
2407 static int ov5640_set_framefmt(struct ov5640_dev *sensor,
2408 struct v4l2_mbus_framefmt *format);
2409
2410 /* restore the last set video mode after chip power-on */
2411 static int ov5640_restore_mode(struct ov5640_dev *sensor)
2412 {
2413 int ret;
2414
2415 /* first load the initial register values */
2416 ov5640_load_regs(sensor, ov5640_init_setting,
2417 ARRAY_SIZE(ov5640_init_setting));
2418
2419 ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_ROOT_DIVIDER, 0x3f,
2420 (ilog2(OV5640_SCLK2X_ROOT_DIV) << 2) |
2421 ilog2(OV5640_SCLK_ROOT_DIV));
2422 if (ret)
2423 return ret;
2424
2425 /* now restore the last capture mode */
2426 ret = ov5640_set_mode(sensor);
2427 if (ret < 0)
2428 return ret;
2429
2430 return ov5640_set_framefmt(sensor, &sensor->fmt);
2431 }
2432
2433 static void ov5640_power(struct ov5640_dev *sensor, bool enable)
2434 {
2435 gpiod_set_value_cansleep(sensor->pwdn_gpio, enable ? 0 : 1);
2436 }
2437
2438 /*
2439 * From section 2.7 power up sequence:
2440 * t0 + t1 + t2 >= 5ms Delay from DOVDD stable to PWDN pull down
2441 * t3 >= 1ms Delay from PWDN pull down to RESETB pull up
2442 * t4 >= 20ms Delay from RESETB pull up to SCCB (i2c) stable
2443 *
2444 * Some modules don't expose RESETB/PWDN pins directly, instead providing a
2445 * "PWUP" GPIO which is wired through appropriate delays and inverters to the
2446 * pins.
2447 *
2448 * In such cases, this gpio should be mapped to pwdn_gpio in the driver, and we
2449 * should still toggle the pwdn_gpio below with the appropriate delays, while
2450 * the calls to reset_gpio will be ignored.
2451 */
2452 static void ov5640_powerup_sequence(struct ov5640_dev *sensor)
2453 {
2454 if (sensor->pwdn_gpio) {
2455 gpiod_set_value_cansleep(sensor->reset_gpio, 1);
2456
2457 /* camera power cycle */
2458 ov5640_power(sensor, false);
2459 usleep_range(5000, 10000); /* t2 */
2460 ov5640_power(sensor, true);
2461 usleep_range(1000, 2000); /* t3 */
2462
2463 gpiod_set_value_cansleep(sensor->reset_gpio, 0);
2464 } else {
2465 /* software reset */
2466 ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0,
2467 OV5640_REG_SYS_CTRL0_SW_RST);
2468 }
2469 usleep_range(20000, 25000); /* t4 */
2470
2471 /*
2472 * software standby: allows registers programming;
2473 * exit at restore_mode() for CSI, s_stream(1) for DVP
2474 */
2475 ov5640_write_reg(sensor, OV5640_REG_SYS_CTRL0,
2476 OV5640_REG_SYS_CTRL0_SW_PWDN);
2477 }
2478
2479 static int ov5640_set_power_on(struct ov5640_dev *sensor)
2480 {
2481 struct i2c_client *client = sensor->i2c_client;
2482 int ret;
2483
2484 ret = clk_prepare_enable(sensor->xclk);
2485 if (ret) {
2486 dev_err(&client->dev, "%s: failed to enable clock\n",
2487 __func__);
2488 return ret;
2489 }
2490
2491 ret = regulator_bulk_enable(OV5640_NUM_SUPPLIES,
2492 sensor->supplies);
2493 if (ret) {
2494 dev_err(&client->dev, "%s: failed to enable regulators\n",
2495 __func__);
2496 goto xclk_off;
2497 }
2498
2499 ov5640_powerup_sequence(sensor);
2500
2501 ret = ov5640_init_slave_id(sensor);
2502 if (ret)
2503 goto power_off;
2504
2505 return 0;
2506
2507 power_off:
2508 ov5640_power(sensor, false);
2509 regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
2510 xclk_off:
2511 clk_disable_unprepare(sensor->xclk);
2512 return ret;
2513 }
2514
2515 static void ov5640_set_power_off(struct ov5640_dev *sensor)
2516 {
2517 ov5640_power(sensor, false);
2518 regulator_bulk_disable(OV5640_NUM_SUPPLIES, sensor->supplies);
2519 clk_disable_unprepare(sensor->xclk);
2520 }
2521
2522 static int ov5640_set_power_mipi(struct ov5640_dev *sensor, bool on)
2523 {
2524 int ret;
2525
2526 if (!on) {
2527 /* Reset MIPI bus settings to their default values. */
2528 ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x58);
2529 ov5640_write_reg(sensor, OV5640_REG_MIPI_CTRL00, 0x04);
2530 ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT00, 0x00);
2531 return 0;
2532 }
2533
2534 /*
2535 * Power up MIPI HS Tx and LS Rx; 2 data lanes mode
2536 *
2537 * 0x300e = 0x40
2538 * [7:5] = 010 : 2 data lanes mode (see FIXME note in
2539 * "ov5640_set_stream_mipi()")
2540 * [4] = 0 : Power up MIPI HS Tx
2541 * [3] = 0 : Power up MIPI LS Rx
2542 * [2] = 1 : MIPI interface enabled
2543 */
2544 ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x44);
2545 if (ret)
2546 return ret;
2547
2548 /*
2549 * Gate clock and set LP11 in 'no packets mode' (idle)
2550 *
2551 * 0x4800 = 0x24
2552 * [5] = 1 : Gate clock when 'no packets'
2553 * [2] = 1 : MIPI bus in LP11 when 'no packets'
2554 */
2555 ret = ov5640_write_reg(sensor, OV5640_REG_MIPI_CTRL00, 0x24);
2556 if (ret)
2557 return ret;
2558
2559 /*
2560 * Set data lanes and clock in LP11 when 'sleeping'
2561 *
2562 * 0x3019 = 0x70
2563 * [6] = 1 : MIPI data lane 2 in LP11 when 'sleeping'
2564 * [5] = 1 : MIPI data lane 1 in LP11 when 'sleeping'
2565 * [4] = 1 : MIPI clock lane in LP11 when 'sleeping'
2566 */
2567 ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT00, 0x70);
2568 if (ret)
2569 return ret;
2570
2571 /* Give lanes some time to coax into LP11 state. */
2572 usleep_range(500, 1000);
2573
2574 return 0;
2575 }
2576
2577 static int ov5640_set_power_dvp(struct ov5640_dev *sensor, bool on)
2578 {
2579 unsigned int flags = sensor->ep.bus.parallel.flags;
2580 bool bt656 = sensor->ep.bus_type == V4L2_MBUS_BT656;
2581 u8 polarities = 0;
2582 int ret;
2583
2584 if (!on) {
2585 /* Reset settings to their default values. */
2586 ov5640_write_reg(sensor, OV5640_REG_CCIR656_CTRL00, 0x00);
2587 ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x58);
2588 ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00, 0x20);
2589 ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE01, 0x00);
2590 ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02, 0x00);
2591 return 0;
2592 }
2593
2594 /*
2595 * Note about parallel port configuration.
2596 *
2597 * When configured in parallel mode, the OV5640 will
2598 * output 10 bits data on DVP data lines [9:0].
2599 * If only 8 bits data are wanted, the 8 bits data lines
2600 * of the camera interface must be physically connected
2601 * on the DVP data lines [9:2].
2602 *
2603 * Control lines polarity can be configured through
2604 * devicetree endpoint control lines properties.
2605 * If no endpoint control lines properties are set,
2606 * polarity will be as below:
2607 * - VSYNC: active high
2608 * - HREF: active low
2609 * - PCLK: active low
2610 *
2611 * VSYNC & HREF are not configured if BT656 bus mode is selected
2612 */
2613
2614 /*
2615 * BT656 embedded synchronization configuration
2616 *
2617 * CCIR656 CTRL00
2618 * - [7]: SYNC code selection (0: auto generate sync code,
2619 * 1: sync code from regs 0x4732-0x4735)
2620 * - [6]: f value in CCIR656 SYNC code when fixed f value
2621 * - [5]: Fixed f value
2622 * - [4:3]: Blank toggle data options (00: data=1'h040/1'h200,
2623 * 01: data from regs 0x4736-0x4738, 10: always keep 0)
2624 * - [1]: Clip data disable
2625 * - [0]: CCIR656 mode enable
2626 *
2627 * Default CCIR656 SAV/EAV mode with default codes
2628 * SAV=0xff000080 & EAV=0xff00009d is enabled here with settings:
2629 * - CCIR656 mode enable
2630 * - auto generation of sync codes
2631 * - blank toggle data 1'h040/1'h200
2632 * - clip reserved data (0x00 & 0xff changed to 0x01 & 0xfe)
2633 */
2634 ret = ov5640_write_reg(sensor, OV5640_REG_CCIR656_CTRL00,
2635 bt656 ? 0x01 : 0x00);
2636 if (ret)
2637 return ret;
2638
2639 /*
2640 * configure parallel port control lines polarity
2641 *
2642 * POLARITY CTRL0
2643 * - [5]: PCLK polarity (0: active low, 1: active high)
2644 * - [1]: HREF polarity (0: active low, 1: active high)
2645 * - [0]: VSYNC polarity (mismatch here between
2646 * datasheet and hardware, 0 is active high
2647 * and 1 is active low...)
2648 */
2649 if (!bt656) {
2650 if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
2651 polarities |= BIT(1);
2652 if (flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
2653 polarities |= BIT(0);
2654 }
2655 if (flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
2656 polarities |= BIT(5);
2657
2658 ret = ov5640_write_reg(sensor, OV5640_REG_POLARITY_CTRL00, polarities);
2659 if (ret)
2660 return ret;
2661
2662 /*
2663 * powerdown MIPI TX/RX PHY & enable DVP
2664 *
2665 * MIPI CONTROL 00
2666 * [4] = 1 : Power down MIPI HS Tx
2667 * [3] = 1 : Power down MIPI LS Rx
2668 * [2] = 0 : DVP enable (MIPI disable)
2669 */
2670 ret = ov5640_write_reg(sensor, OV5640_REG_IO_MIPI_CTRL00, 0x18);
2671 if (ret)
2672 return ret;
2673
2674 /*
2675 * enable VSYNC/HREF/PCLK DVP control lines
2676 * & D[9:6] DVP data lines
2677 *
2678 * PAD OUTPUT ENABLE 01
2679 * - 6: VSYNC output enable
2680 * - 5: HREF output enable
2681 * - 4: PCLK output enable
2682 * - [3:0]: D[9:6] output enable
2683 */
2684 ret = ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE01,
2685 bt656 ? 0x1f : 0x7f);
2686 if (ret)
2687 return ret;
2688
2689 /*
2690 * enable D[5:0] DVP data lines
2691 *
2692 * PAD OUTPUT ENABLE 02
2693 * - [7:2]: D[5:0] output enable
2694 */
2695 return ov5640_write_reg(sensor, OV5640_REG_PAD_OUTPUT_ENABLE02, 0xfc);
2696 }
2697
2698 static int ov5640_set_power(struct ov5640_dev *sensor, bool on)
2699 {
2700 int ret = 0;
2701
2702 if (on) {
2703 ret = ov5640_set_power_on(sensor);
2704 if (ret)
2705 return ret;
2706
2707 ret = ov5640_restore_mode(sensor);
2708 if (ret)
2709 goto power_off;
2710 }
2711
2712 if (sensor->ep.bus_type == V4L2_MBUS_CSI2_DPHY)
2713 ret = ov5640_set_power_mipi(sensor, on);
2714 else
2715 ret = ov5640_set_power_dvp(sensor, on);
2716 if (ret)
2717 goto power_off;
2718
2719 if (!on)
2720 ov5640_set_power_off(sensor);
2721
2722 return 0;
2723
2724 power_off:
2725 ov5640_set_power_off(sensor);
2726 return ret;
2727 }
2728
2729 static int ov5640_sensor_suspend(struct device *dev)
2730 {
2731 struct v4l2_subdev *sd = dev_get_drvdata(dev);
2732 struct ov5640_dev *ov5640 = to_ov5640_dev(sd);
2733
2734 return ov5640_set_power(ov5640, false);
2735 }
2736
2737 static int ov5640_sensor_resume(struct device *dev)
2738 {
2739 struct v4l2_subdev *sd = dev_get_drvdata(dev);
2740 struct ov5640_dev *ov5640 = to_ov5640_dev(sd);
2741
2742 return ov5640_set_power(ov5640, true);
2743 }
2744
2745 /* --------------- Subdev Operations --------------- */
2746
2747 static int ov5640_try_frame_interval(struct ov5640_dev *sensor,
2748 struct v4l2_fract *fi,
2749 const struct ov5640_mode_info *mode_info)
2750 {
2751 const struct ov5640_mode_info *mode = mode_info;
2752 enum ov5640_frame_rate rate = OV5640_15_FPS;
2753 int minfps, maxfps, best_fps, fps;
2754 int i;
2755
2756 minfps = ov5640_framerates[OV5640_15_FPS];
2757 maxfps = ov5640_framerates[mode->max_fps];
2758
2759 if (fi->numerator == 0) {
2760 fi->denominator = maxfps;
2761 fi->numerator = 1;
2762 rate = mode->max_fps;
2763 goto find_mode;
2764 }
2765
2766 fps = clamp_val(DIV_ROUND_CLOSEST(fi->denominator, fi->numerator),
2767 minfps, maxfps);
2768
2769 best_fps = minfps;
2770 for (i = 0; i < ARRAY_SIZE(ov5640_framerates); i++) {
2771 int curr_fps = ov5640_framerates[i];
2772
2773 if (abs(curr_fps - fps) < abs(best_fps - fps)) {
2774 best_fps = curr_fps;
2775 rate = i;
2776 }
2777 }
2778
2779 fi->numerator = 1;
2780 fi->denominator = best_fps;
2781
2782 find_mode:
2783 mode = ov5640_find_mode(sensor, mode->width, mode->height, false);
2784 return mode ? rate : -EINVAL;
2785 }
2786
2787 static int ov5640_get_fmt(struct v4l2_subdev *sd,
2788 struct v4l2_subdev_state *sd_state,
2789 struct v4l2_subdev_format *format)
2790 {
2791 struct ov5640_dev *sensor = to_ov5640_dev(sd);
2792 struct v4l2_mbus_framefmt *fmt;
2793
2794 if (format->pad != 0)
2795 return -EINVAL;
2796
2797 mutex_lock(&sensor->lock);
2798
2799 if (format->which == V4L2_SUBDEV_FORMAT_TRY)
2800 fmt = v4l2_subdev_state_get_format(sd_state, format->pad);
2801 else
2802 fmt = &sensor->fmt;
2803
2804 format->format = *fmt;
2805
2806 mutex_unlock(&sensor->lock);
2807
2808 return 0;
2809 }
2810
2811 static int ov5640_try_fmt_internal(struct v4l2_subdev *sd,
2812 struct v4l2_mbus_framefmt *fmt,
2813 const struct ov5640_mode_info **new_mode)
2814 {
2815 struct ov5640_dev *sensor = to_ov5640_dev(sd);
2816 const struct ov5640_mode_info *mode;
2817 const struct ov5640_pixfmt *pixfmt;
2818 unsigned int bpp;
2819
2820 mode = ov5640_find_mode(sensor, fmt->width, fmt->height, true);
2821 if (!mode)
2822 return -EINVAL;
2823
2824 pixfmt = ov5640_code_to_pixfmt(sensor, fmt->code);
2825 bpp = pixfmt->bpp;
2826
2827 /*
2828 * Adjust mode according to bpp:
2829 * - 8bpp modes work for resolution >= 1280x720
2830 * - 24bpp modes work resolution < 1280x720
2831 */
2832 if (bpp == 8 && mode->width < 1280)
2833 mode = &ov5640_mode_data[OV5640_MODE_720P_1280_720];
2834 else if (bpp == 24 && mode->width > 1024)
2835 mode = &ov5640_mode_data[OV5640_MODE_XGA_1024_768];
2836
2837 fmt->width = mode->width;
2838 fmt->height = mode->height;
2839
2840 if (new_mode)
2841 *new_mode = mode;
2842
2843 fmt->code = pixfmt->code;
2844 fmt->colorspace = pixfmt->colorspace;
2845 fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
2846 fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
2847 fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
2848
2849 return 0;
2850 }
2851
2852 static void __v4l2_ctrl_vblank_update(struct ov5640_dev *sensor, u32 vblank)
2853 {
2854 const struct ov5640_mode_info *mode = sensor->current_mode;
2855
2856 __v4l2_ctrl_modify_range(sensor->ctrls.vblank, OV5640_MIN_VBLANK,
2857 OV5640_MAX_VTS - mode->height, 1, vblank);
2858
2859 __v4l2_ctrl_s_ctrl(sensor->ctrls.vblank, vblank);
2860 }
2861
2862 static int ov5640_update_pixel_rate(struct ov5640_dev *sensor)
2863 {
2864 const struct ov5640_mode_info *mode = sensor->current_mode;
2865 enum ov5640_pixel_rate_id pixel_rate_id = mode->pixel_rate;
2866 struct v4l2_mbus_framefmt *fmt = &sensor->fmt;
2867 const struct ov5640_timings *timings = ov5640_timings(sensor, mode);
2868 s32 exposure_val, exposure_max;
2869 unsigned int hblank;
2870 unsigned int i = 0;
2871 u32 pixel_rate;
2872 s64 link_freq;
2873 u32 num_lanes;
2874 u32 vblank;
2875 u32 bpp;
2876
2877 /*
2878 * Update the pixel rate control value.
2879 *
2880 * For DVP mode, maintain the pixel rate calculation using fixed FPS.
2881 */
2882 if (!ov5640_is_csi2(sensor)) {
2883 __v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixel_rate,
2884 ov5640_calc_pixel_rate(sensor));
2885
2886 __v4l2_ctrl_vblank_update(sensor, timings->vblank_def);
2887
2888 return 0;
2889 }
2890
2891 /*
2892 * The MIPI CSI-2 link frequency should comply with the CSI-2
2893 * specification and be lower than 1GHz.
2894 *
2895 * Start from the suggested pixel_rate for the current mode and
2896 * progressively slow it down if it exceeds 1GHz.
2897 */
2898 num_lanes = sensor->ep.bus.mipi_csi2.num_data_lanes;
2899 bpp = ov5640_code_to_bpp(sensor, fmt->code);
2900 do {
2901 pixel_rate = ov5640_pixel_rates[pixel_rate_id];
2902 link_freq = pixel_rate * bpp / (2 * num_lanes);
2903 } while (link_freq >= 1000000000U &&
2904 ++pixel_rate_id < OV5640_NUM_PIXEL_RATES);
2905
2906 sensor->current_link_freq = link_freq;
2907
2908 /*
2909 * Higher link rates require the clock tree to be programmed with
2910 * 'mipi_div' = 1; this has the effect of halving the actual output
2911 * pixel rate in the MIPI domain.
2912 *
2913 * Adjust the pixel rate and link frequency control value to report it
2914 * correctly to userspace.
2915 */
2916 if (link_freq > OV5640_LINK_RATE_MAX) {
2917 pixel_rate /= 2;
2918 link_freq /= 2;
2919 }
2920
2921 for (i = 0; i < ARRAY_SIZE(ov5640_csi2_link_freqs); ++i) {
2922 if (ov5640_csi2_link_freqs[i] == link_freq)
2923 break;
2924 }
2925 WARN_ON(i == ARRAY_SIZE(ov5640_csi2_link_freqs));
2926
2927 __v4l2_ctrl_s_ctrl_int64(sensor->ctrls.pixel_rate, pixel_rate);
2928 __v4l2_ctrl_s_ctrl(sensor->ctrls.link_freq, i);
2929
2930 hblank = timings->htot - mode->width;
2931 __v4l2_ctrl_modify_range(sensor->ctrls.hblank,
2932 hblank, hblank, 1, hblank);
2933
2934 vblank = timings->vblank_def;
2935 __v4l2_ctrl_vblank_update(sensor, vblank);
2936
2937 exposure_max = timings->crop.height + vblank - 4;
2938 exposure_val = clamp_t(s32, sensor->ctrls.exposure->val,
2939 sensor->ctrls.exposure->minimum,
2940 exposure_max);
2941
2942 __v4l2_ctrl_modify_range(sensor->ctrls.exposure,
2943 sensor->ctrls.exposure->minimum,
2944 exposure_max, 1, exposure_val);
2945
2946 return 0;
2947 }
2948
2949 static int ov5640_set_fmt(struct v4l2_subdev *sd,
2950 struct v4l2_subdev_state *sd_state,
2951 struct v4l2_subdev_format *format)
2952 {
2953 struct ov5640_dev *sensor = to_ov5640_dev(sd);
2954 const struct ov5640_mode_info *new_mode;
2955 struct v4l2_mbus_framefmt *mbus_fmt = &format->format;
2956 int ret;
2957
2958 if (format->pad != 0)
2959 return -EINVAL;
2960
2961 mutex_lock(&sensor->lock);
2962
2963 if (sensor->streaming) {
2964 ret = -EBUSY;
2965 goto out;
2966 }
2967
2968 ret = ov5640_try_fmt_internal(sd, mbus_fmt, &new_mode);
2969 if (ret)
2970 goto out;
2971
2972 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
2973 *v4l2_subdev_state_get_format(sd_state, 0) = *mbus_fmt;
2974 goto out;
2975 }
2976
2977 if (new_mode != sensor->current_mode) {
2978 sensor->current_fr = new_mode->def_fps;
2979 sensor->current_mode = new_mode;
2980 sensor->pending_mode_change = true;
2981 }
2982 if (mbus_fmt->code != sensor->fmt.code)
2983 sensor->pending_fmt_change = true;
2984
2985 /* update format even if code is unchanged, resolution might change */
2986 sensor->fmt = *mbus_fmt;
2987
2988 ov5640_update_pixel_rate(sensor);
2989
2990 out:
2991 mutex_unlock(&sensor->lock);
2992 return ret;
2993 }
2994
2995 static int ov5640_get_selection(struct v4l2_subdev *sd,
2996 struct v4l2_subdev_state *sd_state,
2997 struct v4l2_subdev_selection *sel)
2998 {
2999 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3000 const struct ov5640_mode_info *mode = sensor->current_mode;
3001 const struct ov5640_timings *timings;
3002
3003 switch (sel->target) {
3004 case V4L2_SEL_TGT_CROP: {
3005 mutex_lock(&sensor->lock);
3006 timings = ov5640_timings(sensor, mode);
3007 sel->r = timings->analog_crop;
3008 mutex_unlock(&sensor->lock);
3009
3010 return 0;
3011 }
3012
3013 case V4L2_SEL_TGT_NATIVE_SIZE:
3014 case V4L2_SEL_TGT_CROP_BOUNDS:
3015 sel->r.top = 0;
3016 sel->r.left = 0;
3017 sel->r.width = OV5640_NATIVE_WIDTH;
3018 sel->r.height = OV5640_NATIVE_HEIGHT;
3019
3020 return 0;
3021
3022 case V4L2_SEL_TGT_CROP_DEFAULT:
3023 sel->r.top = OV5640_PIXEL_ARRAY_TOP;
3024 sel->r.left = OV5640_PIXEL_ARRAY_LEFT;
3025 sel->r.width = OV5640_PIXEL_ARRAY_WIDTH;
3026 sel->r.height = OV5640_PIXEL_ARRAY_HEIGHT;
3027
3028 return 0;
3029 }
3030
3031 return -EINVAL;
3032 }
3033
3034 static int ov5640_set_framefmt(struct ov5640_dev *sensor,
3035 struct v4l2_mbus_framefmt *format)
3036 {
3037 bool is_jpeg = format->code == MEDIA_BUS_FMT_JPEG_1X8;
3038 const struct ov5640_pixfmt *pixfmt;
3039 int ret = 0;
3040
3041 pixfmt = ov5640_code_to_pixfmt(sensor, format->code);
3042
3043 /* FORMAT CONTROL00: YUV and RGB formatting */
3044 ret = ov5640_write_reg(sensor, OV5640_REG_FORMAT_CONTROL00,
3045 pixfmt->ctrl00);
3046 if (ret)
3047 return ret;
3048
3049 /* FORMAT MUX CONTROL: ISP YUV or RGB */
3050 ret = ov5640_write_reg(sensor, OV5640_REG_ISP_FORMAT_MUX_CTRL,
3051 pixfmt->mux);
3052 if (ret)
3053 return ret;
3054
3055 /*
3056 * TIMING TC REG21:
3057 * - [5]: JPEG enable
3058 */
3059 ret = ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
3060 BIT(5), is_jpeg ? BIT(5) : 0);
3061 if (ret)
3062 return ret;
3063
3064 /*
3065 * SYSTEM RESET02:
3066 * - [4]: Reset JFIFO
3067 * - [3]: Reset SFIFO
3068 * - [2]: Reset JPEG
3069 */
3070 ret = ov5640_mod_reg(sensor, OV5640_REG_SYS_RESET02,
3071 BIT(4) | BIT(3) | BIT(2),
3072 is_jpeg ? 0 : (BIT(4) | BIT(3) | BIT(2)));
3073 if (ret)
3074 return ret;
3075
3076 /*
3077 * CLOCK ENABLE02:
3078 * - [5]: Enable JPEG 2x clock
3079 * - [3]: Enable JPEG clock
3080 */
3081 return ov5640_mod_reg(sensor, OV5640_REG_SYS_CLOCK_ENABLE02,
3082 BIT(5) | BIT(3),
3083 is_jpeg ? (BIT(5) | BIT(3)) : 0);
3084 }
3085
3086 /*
3087 * Sensor Controls.
3088 */
3089
3090 static int ov5640_set_ctrl_hue(struct ov5640_dev *sensor, int value)
3091 {
3092 int ret;
3093
3094 if (value) {
3095 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
3096 BIT(0), BIT(0));
3097 if (ret)
3098 return ret;
3099 ret = ov5640_write_reg16(sensor, OV5640_REG_SDE_CTRL1, value);
3100 } else {
3101 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(0), 0);
3102 }
3103
3104 return ret;
3105 }
3106
3107 static int ov5640_set_ctrl_contrast(struct ov5640_dev *sensor, int value)
3108 {
3109 int ret;
3110
3111 if (value) {
3112 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
3113 BIT(2), BIT(2));
3114 if (ret)
3115 return ret;
3116 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL5,
3117 value & 0xff);
3118 } else {
3119 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(2), 0);
3120 }
3121
3122 return ret;
3123 }
3124
3125 static int ov5640_set_ctrl_saturation(struct ov5640_dev *sensor, int value)
3126 {
3127 int ret;
3128
3129 if (value) {
3130 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0,
3131 BIT(1), BIT(1));
3132 if (ret)
3133 return ret;
3134 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL3,
3135 value & 0xff);
3136 if (ret)
3137 return ret;
3138 ret = ov5640_write_reg(sensor, OV5640_REG_SDE_CTRL4,
3139 value & 0xff);
3140 } else {
3141 ret = ov5640_mod_reg(sensor, OV5640_REG_SDE_CTRL0, BIT(1), 0);
3142 }
3143
3144 return ret;
3145 }
3146
3147 static int ov5640_set_ctrl_white_balance(struct ov5640_dev *sensor, int awb)
3148 {
3149 int ret;
3150
3151 ret = ov5640_mod_reg(sensor, OV5640_REG_AWB_MANUAL_CTRL,
3152 BIT(0), awb ? 0 : 1);
3153 if (ret)
3154 return ret;
3155
3156 if (!awb) {
3157 u16 red = (u16)sensor->ctrls.red_balance->val;
3158 u16 blue = (u16)sensor->ctrls.blue_balance->val;
3159
3160 ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_R_GAIN, red);
3161 if (ret)
3162 return ret;
3163 ret = ov5640_write_reg16(sensor, OV5640_REG_AWB_B_GAIN, blue);
3164 }
3165
3166 return ret;
3167 }
3168
3169 static int ov5640_set_ctrl_exposure(struct ov5640_dev *sensor,
3170 enum v4l2_exposure_auto_type auto_exposure)
3171 {
3172 struct ov5640_ctrls *ctrls = &sensor->ctrls;
3173 bool auto_exp = (auto_exposure == V4L2_EXPOSURE_AUTO);
3174 int ret = 0;
3175
3176 if (ctrls->auto_exp->is_new) {
3177 ret = ov5640_set_autoexposure(sensor, auto_exp);
3178 if (ret)
3179 return ret;
3180 }
3181
3182 if (!auto_exp && ctrls->exposure->is_new) {
3183 u16 max_exp;
3184
3185 ret = ov5640_read_reg16(sensor, OV5640_REG_AEC_PK_VTS,
3186 &max_exp);
3187 if (ret)
3188 return ret;
3189 ret = ov5640_get_vts(sensor);
3190 if (ret < 0)
3191 return ret;
3192 max_exp += ret;
3193 ret = 0;
3194
3195 if (ctrls->exposure->val < max_exp)
3196 ret = ov5640_set_exposure(sensor, ctrls->exposure->val);
3197 }
3198
3199 return ret;
3200 }
3201
3202 static int ov5640_set_ctrl_gain(struct ov5640_dev *sensor, bool auto_gain)
3203 {
3204 struct ov5640_ctrls *ctrls = &sensor->ctrls;
3205 int ret = 0;
3206
3207 if (ctrls->auto_gain->is_new) {
3208 ret = ov5640_set_autogain(sensor, auto_gain);
3209 if (ret)
3210 return ret;
3211 }
3212
3213 if (!auto_gain && ctrls->gain->is_new)
3214 ret = ov5640_set_gain(sensor, ctrls->gain->val);
3215
3216 return ret;
3217 }
3218
3219 static const char * const test_pattern_menu[] = {
3220 "Disabled",
3221 "Color bars",
3222 "Color bars w/ rolling bar",
3223 "Color squares",
3224 "Color squares w/ rolling bar",
3225 };
3226
3227 #define OV5640_TEST_ENABLE BIT(7)
3228 #define OV5640_TEST_ROLLING BIT(6) /* rolling horizontal bar */
3229 #define OV5640_TEST_TRANSPARENT BIT(5)
3230 #define OV5640_TEST_SQUARE_BW BIT(4) /* black & white squares */
3231 #define OV5640_TEST_BAR_STANDARD (0 << 2)
3232 #define OV5640_TEST_BAR_VERT_CHANGE_1 (1 << 2)
3233 #define OV5640_TEST_BAR_HOR_CHANGE (2 << 2)
3234 #define OV5640_TEST_BAR_VERT_CHANGE_2 (3 << 2)
3235 #define OV5640_TEST_BAR (0 << 0)
3236 #define OV5640_TEST_RANDOM (1 << 0)
3237 #define OV5640_TEST_SQUARE (2 << 0)
3238 #define OV5640_TEST_BLACK (3 << 0)
3239
3240 static const u8 test_pattern_val[] = {
3241 0,
3242 OV5640_TEST_ENABLE | OV5640_TEST_BAR_VERT_CHANGE_1 |
3243 OV5640_TEST_BAR,
3244 OV5640_TEST_ENABLE | OV5640_TEST_ROLLING |
3245 OV5640_TEST_BAR_VERT_CHANGE_1 | OV5640_TEST_BAR,
3246 OV5640_TEST_ENABLE | OV5640_TEST_SQUARE,
3247 OV5640_TEST_ENABLE | OV5640_TEST_ROLLING | OV5640_TEST_SQUARE,
3248 };
3249
3250 static int ov5640_set_ctrl_test_pattern(struct ov5640_dev *sensor, int value)
3251 {
3252 return ov5640_write_reg(sensor, OV5640_REG_PRE_ISP_TEST_SET1,
3253 test_pattern_val[value]);
3254 }
3255
3256 static int ov5640_set_ctrl_light_freq(struct ov5640_dev *sensor, int value)
3257 {
3258 int ret;
3259
3260 ret = ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL01, BIT(7),
3261 (value == V4L2_CID_POWER_LINE_FREQUENCY_AUTO) ?
3262 0 : BIT(7));
3263 if (ret)
3264 return ret;
3265
3266 return ov5640_mod_reg(sensor, OV5640_REG_HZ5060_CTRL00, BIT(2),
3267 (value == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) ?
3268 BIT(2) : 0);
3269 }
3270
3271 static int ov5640_set_ctrl_hflip(struct ov5640_dev *sensor, int value)
3272 {
3273 /*
3274 * If sensor is mounted upside down, mirror logic is inversed.
3275 *
3276 * Sensor is a BSI (Back Side Illuminated) one,
3277 * so image captured is physically mirrored.
3278 * This is why mirror logic is inversed in
3279 * order to cancel this mirror effect.
3280 */
3281
3282 /*
3283 * TIMING TC REG21:
3284 * - [2]: ISP mirror
3285 * - [1]: Sensor mirror
3286 */
3287 return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG21,
3288 BIT(2) | BIT(1),
3289 (!(value ^ sensor->upside_down)) ?
3290 (BIT(2) | BIT(1)) : 0);
3291 }
3292
3293 static int ov5640_set_ctrl_vflip(struct ov5640_dev *sensor, int value)
3294 {
3295 /* If sensor is mounted upside down, flip logic is inversed */
3296
3297 /*
3298 * TIMING TC REG20:
3299 * - [2]: ISP vflip
3300 * - [1]: Sensor vflip
3301 */
3302 return ov5640_mod_reg(sensor, OV5640_REG_TIMING_TC_REG20,
3303 BIT(2) | BIT(1),
3304 (value ^ sensor->upside_down) ?
3305 (BIT(2) | BIT(1)) : 0);
3306 }
3307
3308 static int ov5640_set_ctrl_vblank(struct ov5640_dev *sensor, int value)
3309 {
3310 const struct ov5640_mode_info *mode = sensor->current_mode;
3311
3312 /* Update the VTOT timing register value. */
3313 return ov5640_write_reg16(sensor, OV5640_REG_TIMING_VTS,
3314 mode->height + value);
3315 }
3316
3317 static int ov5640_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
3318 {
3319 struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
3320 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3321 int val;
3322
3323 /* v4l2_ctrl_lock() locks our own mutex */
3324
3325 if (!pm_runtime_get_if_in_use(&sensor->i2c_client->dev))
3326 return 0;
3327
3328 switch (ctrl->id) {
3329 case V4L2_CID_AUTOGAIN:
3330 val = ov5640_get_gain(sensor);
3331 if (val < 0)
3332 return val;
3333 sensor->ctrls.gain->val = val;
3334 break;
3335 case V4L2_CID_EXPOSURE_AUTO:
3336 val = ov5640_get_exposure(sensor);
3337 if (val < 0)
3338 return val;
3339 sensor->ctrls.exposure->val = val;
3340 break;
3341 }
3342
3343 pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
3344 pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
3345
3346 return 0;
3347 }
3348
3349 static int ov5640_s_ctrl(struct v4l2_ctrl *ctrl)
3350 {
3351 struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
3352 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3353 const struct ov5640_mode_info *mode = sensor->current_mode;
3354 const struct ov5640_timings *timings;
3355 unsigned int exp_max;
3356 int ret;
3357
3358 /* v4l2_ctrl_lock() locks our own mutex */
3359
3360 switch (ctrl->id) {
3361 case V4L2_CID_VBLANK:
3362 /* Update the exposure range to the newly programmed vblank. */
3363 timings = ov5640_timings(sensor, mode);
3364 exp_max = mode->height + ctrl->val - 4;
3365 __v4l2_ctrl_modify_range(sensor->ctrls.exposure,
3366 sensor->ctrls.exposure->minimum,
3367 exp_max, sensor->ctrls.exposure->step,
3368 timings->vblank_def);
3369 break;
3370 }
3371
3372 /*
3373 * If the device is not powered up by the host driver do
3374 * not apply any controls to H/W at this time. Instead
3375 * the controls will be restored at start streaming time.
3376 */
3377 if (!pm_runtime_get_if_in_use(&sensor->i2c_client->dev))
3378 return 0;
3379
3380 switch (ctrl->id) {
3381 case V4L2_CID_AUTOGAIN:
3382 ret = ov5640_set_ctrl_gain(sensor, ctrl->val);
3383 break;
3384 case V4L2_CID_EXPOSURE_AUTO:
3385 ret = ov5640_set_ctrl_exposure(sensor, ctrl->val);
3386 break;
3387 case V4L2_CID_AUTO_WHITE_BALANCE:
3388 ret = ov5640_set_ctrl_white_balance(sensor, ctrl->val);
3389 break;
3390 case V4L2_CID_HUE:
3391 ret = ov5640_set_ctrl_hue(sensor, ctrl->val);
3392 break;
3393 case V4L2_CID_CONTRAST:
3394 ret = ov5640_set_ctrl_contrast(sensor, ctrl->val);
3395 break;
3396 case V4L2_CID_SATURATION:
3397 ret = ov5640_set_ctrl_saturation(sensor, ctrl->val);
3398 break;
3399 case V4L2_CID_TEST_PATTERN:
3400 ret = ov5640_set_ctrl_test_pattern(sensor, ctrl->val);
3401 break;
3402 case V4L2_CID_POWER_LINE_FREQUENCY:
3403 ret = ov5640_set_ctrl_light_freq(sensor, ctrl->val);
3404 break;
3405 case V4L2_CID_HFLIP:
3406 ret = ov5640_set_ctrl_hflip(sensor, ctrl->val);
3407 break;
3408 case V4L2_CID_VFLIP:
3409 ret = ov5640_set_ctrl_vflip(sensor, ctrl->val);
3410 break;
3411 case V4L2_CID_VBLANK:
3412 ret = ov5640_set_ctrl_vblank(sensor, ctrl->val);
3413 break;
3414 default:
3415 ret = -EINVAL;
3416 break;
3417 }
3418
3419 pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
3420 pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
3421
3422 return ret;
3423 }
3424
3425 static const struct v4l2_ctrl_ops ov5640_ctrl_ops = {
3426 .g_volatile_ctrl = ov5640_g_volatile_ctrl,
3427 .s_ctrl = ov5640_s_ctrl,
3428 };
3429
3430 static int ov5640_init_controls(struct ov5640_dev *sensor)
3431 {
3432 const struct ov5640_mode_info *mode = sensor->current_mode;
3433 const struct v4l2_ctrl_ops *ops = &ov5640_ctrl_ops;
3434 struct ov5640_ctrls *ctrls = &sensor->ctrls;
3435 struct v4l2_ctrl_handler *hdl = &ctrls->handler;
3436 struct v4l2_fwnode_device_properties props;
3437 const struct ov5640_timings *timings;
3438 unsigned int max_vblank;
3439 unsigned int hblank;
3440 int ret;
3441
3442 v4l2_ctrl_handler_init(hdl, 32);
3443
3444 /* we can use our own mutex for the ctrl lock */
3445 hdl->lock = &sensor->lock;
3446
3447 /* Clock related controls */
3448 ctrls->pixel_rate = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_PIXEL_RATE,
3449 ov5640_pixel_rates[OV5640_NUM_PIXEL_RATES - 1],
3450 ov5640_pixel_rates[0], 1,
3451 ov5640_pixel_rates[mode->pixel_rate]);
3452
3453 ctrls->link_freq = v4l2_ctrl_new_int_menu(hdl, ops,
3454 V4L2_CID_LINK_FREQ,
3455 ARRAY_SIZE(ov5640_csi2_link_freqs) - 1,
3456 OV5640_DEFAULT_LINK_FREQ,
3457 ov5640_csi2_link_freqs);
3458
3459 timings = ov5640_timings(sensor, mode);
3460 hblank = timings->htot - mode->width;
3461 ctrls->hblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HBLANK, hblank,
3462 hblank, 1, hblank);
3463
3464 max_vblank = OV5640_MAX_VTS - mode->height;
3465 ctrls->vblank = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VBLANK,
3466 OV5640_MIN_VBLANK, max_vblank,
3467 1, timings->vblank_def);
3468
3469 /* Auto/manual white balance */
3470 ctrls->auto_wb = v4l2_ctrl_new_std(hdl, ops,
3471 V4L2_CID_AUTO_WHITE_BALANCE,
3472 0, 1, 1, 1);
3473 ctrls->blue_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_BLUE_BALANCE,
3474 0, 4095, 1, 0);
3475 ctrls->red_balance = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_RED_BALANCE,
3476 0, 4095, 1, 0);
3477 /* Auto/manual exposure */
3478 ctrls->auto_exp = v4l2_ctrl_new_std_menu(hdl, ops,
3479 V4L2_CID_EXPOSURE_AUTO,
3480 V4L2_EXPOSURE_MANUAL, 0,
3481 V4L2_EXPOSURE_AUTO);
3482 ctrls->exposure = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_EXPOSURE,
3483 0, 65535, 1, 0);
3484 /* Auto/manual gain */
3485 ctrls->auto_gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_AUTOGAIN,
3486 0, 1, 1, 1);
3487 ctrls->gain = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_ANALOGUE_GAIN,
3488 0, 1023, 1, 0);
3489
3490 ctrls->saturation = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_SATURATION,
3491 0, 255, 1, 64);
3492 ctrls->hue = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HUE,
3493 0, 359, 1, 0);
3494 ctrls->contrast = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_CONTRAST,
3495 0, 255, 1, 0);
3496 ctrls->test_pattern =
3497 v4l2_ctrl_new_std_menu_items(hdl, ops, V4L2_CID_TEST_PATTERN,
3498 ARRAY_SIZE(test_pattern_menu) - 1,
3499 0, 0, test_pattern_menu);
3500 ctrls->hflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_HFLIP,
3501 0, 1, 1, 0);
3502 ctrls->vflip = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_VFLIP,
3503 0, 1, 1, 0);
3504
3505 ctrls->light_freq =
3506 v4l2_ctrl_new_std_menu(hdl, ops,
3507 V4L2_CID_POWER_LINE_FREQUENCY,
3508 V4L2_CID_POWER_LINE_FREQUENCY_AUTO, 0,
3509 V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
3510
3511 if (hdl->error) {
3512 ret = hdl->error;
3513 goto free_ctrls;
3514 }
3515
3516 ret = v4l2_fwnode_device_parse(&sensor->i2c_client->dev, &props);
3517 if (ret)
3518 goto free_ctrls;
3519
3520 if (props.rotation == 180)
3521 sensor->upside_down = true;
3522
3523 ret = v4l2_ctrl_new_fwnode_properties(hdl, ops, &props);
3524 if (ret)
3525 goto free_ctrls;
3526
3527 ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY;
3528 ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
3529 ctrls->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
3530 ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE;
3531 ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE;
3532
3533 v4l2_ctrl_auto_cluster(3, &ctrls->auto_wb, 0, false);
3534 v4l2_ctrl_auto_cluster(2, &ctrls->auto_gain, 0, true);
3535 v4l2_ctrl_auto_cluster(2, &ctrls->auto_exp, 1, true);
3536
3537 sensor->sd.ctrl_handler = hdl;
3538 return 0;
3539
3540 free_ctrls:
3541 v4l2_ctrl_handler_free(hdl);
3542 return ret;
3543 }
3544
3545 static int ov5640_enum_frame_size(struct v4l2_subdev *sd,
3546 struct v4l2_subdev_state *sd_state,
3547 struct v4l2_subdev_frame_size_enum *fse)
3548 {
3549 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3550 u32 bpp = ov5640_code_to_bpp(sensor, fse->code);
3551 unsigned int index = fse->index;
3552
3553 if (fse->pad != 0)
3554 return -EINVAL;
3555 if (!bpp)
3556 return -EINVAL;
3557
3558 /* Only low-resolution modes are supported for 24bpp formats. */
3559 if (bpp == 24 && index >= OV5640_MODE_720P_1280_720)
3560 return -EINVAL;
3561
3562 /* FIXME: Low resolution modes don't work in 8bpp formats. */
3563 if (bpp == 8)
3564 index += OV5640_MODE_720P_1280_720;
3565
3566 if (index >= OV5640_NUM_MODES)
3567 return -EINVAL;
3568
3569 fse->min_width = ov5640_mode_data[index].width;
3570 fse->max_width = fse->min_width;
3571 fse->min_height = ov5640_mode_data[index].height;
3572 fse->max_height = fse->min_height;
3573
3574 return 0;
3575 }
3576
3577 static int ov5640_enum_frame_interval(
3578 struct v4l2_subdev *sd,
3579 struct v4l2_subdev_state *sd_state,
3580 struct v4l2_subdev_frame_interval_enum *fie)
3581 {
3582 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3583 const struct ov5640_mode_info *mode;
3584 struct v4l2_fract tpf;
3585 int ret;
3586
3587 if (fie->pad != 0)
3588 return -EINVAL;
3589 if (fie->index >= OV5640_NUM_FRAMERATES)
3590 return -EINVAL;
3591
3592 mode = ov5640_find_mode(sensor, fie->width, fie->height, false);
3593 if (!mode)
3594 return -EINVAL;
3595
3596 tpf.numerator = 1;
3597 tpf.denominator = ov5640_framerates[fie->index];
3598
3599 ret = ov5640_try_frame_interval(sensor, &tpf, mode);
3600 if (ret < 0)
3601 return -EINVAL;
3602
3603 fie->interval = tpf;
3604 return 0;
3605 }
3606
3607 static int ov5640_get_frame_interval(struct v4l2_subdev *sd,
3608 struct v4l2_subdev_state *sd_state,
3609 struct v4l2_subdev_frame_interval *fi)
3610 {
3611 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3612
3613 /*
3614 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
3615 * subdev active state API.
3616 */
3617 if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
3618 return -EINVAL;
3619
3620 mutex_lock(&sensor->lock);
3621 fi->interval = sensor->frame_interval;
3622 mutex_unlock(&sensor->lock);
3623
3624 return 0;
3625 }
3626
3627 static int ov5640_set_frame_interval(struct v4l2_subdev *sd,
3628 struct v4l2_subdev_state *sd_state,
3629 struct v4l2_subdev_frame_interval *fi)
3630 {
3631 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3632 const struct ov5640_mode_info *mode;
3633 int frame_rate, ret = 0;
3634
3635 /*
3636 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
3637 * subdev active state API.
3638 */
3639 if (fi->which != V4L2_SUBDEV_FORMAT_ACTIVE)
3640 return -EINVAL;
3641
3642 if (fi->pad != 0)
3643 return -EINVAL;
3644
3645 mutex_lock(&sensor->lock);
3646
3647 if (sensor->streaming) {
3648 ret = -EBUSY;
3649 goto out;
3650 }
3651
3652 mode = sensor->current_mode;
3653
3654 frame_rate = ov5640_try_frame_interval(sensor, &fi->interval, mode);
3655 if (frame_rate < 0) {
3656 /* Always return a valid frame interval value */
3657 fi->interval = sensor->frame_interval;
3658 goto out;
3659 }
3660
3661 mode = ov5640_find_mode(sensor, mode->width, mode->height, true);
3662 if (!mode) {
3663 ret = -EINVAL;
3664 goto out;
3665 }
3666
3667 if (ov5640_framerates[frame_rate] > ov5640_framerates[mode->max_fps]) {
3668 ret = -EINVAL;
3669 goto out;
3670 }
3671
3672 if (mode != sensor->current_mode ||
3673 frame_rate != sensor->current_fr) {
3674 sensor->current_fr = frame_rate;
3675 sensor->frame_interval = fi->interval;
3676 sensor->current_mode = mode;
3677 sensor->pending_mode_change = true;
3678
3679 ov5640_update_pixel_rate(sensor);
3680 }
3681 out:
3682 mutex_unlock(&sensor->lock);
3683 return ret;
3684 }
3685
3686 static int ov5640_enum_mbus_code(struct v4l2_subdev *sd,
3687 struct v4l2_subdev_state *sd_state,
3688 struct v4l2_subdev_mbus_code_enum *code)
3689 {
3690 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3691 const struct ov5640_pixfmt *formats;
3692 unsigned int num_formats;
3693
3694 if (ov5640_is_csi2(sensor)) {
3695 formats = ov5640_csi2_formats;
3696 num_formats = ARRAY_SIZE(ov5640_csi2_formats) - 1;
3697 } else {
3698 formats = ov5640_dvp_formats;
3699 num_formats = ARRAY_SIZE(ov5640_dvp_formats) - 1;
3700 }
3701
3702 if (code->index >= num_formats)
3703 return -EINVAL;
3704
3705 code->code = formats[code->index].code;
3706
3707 return 0;
3708 }
3709
3710 static int ov5640_s_stream(struct v4l2_subdev *sd, int enable)
3711 {
3712 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3713 int ret = 0;
3714
3715 if (enable) {
3716 ret = pm_runtime_resume_and_get(&sensor->i2c_client->dev);
3717 if (ret < 0)
3718 return ret;
3719
3720 ret = v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
3721 if (ret) {
3722 pm_runtime_put(&sensor->i2c_client->dev);
3723 return ret;
3724 }
3725 }
3726
3727 mutex_lock(&sensor->lock);
3728
3729 if (sensor->streaming == !enable) {
3730 if (enable && sensor->pending_mode_change) {
3731 ret = ov5640_set_mode(sensor);
3732 if (ret)
3733 goto out;
3734 }
3735
3736 if (enable && sensor->pending_fmt_change) {
3737 ret = ov5640_set_framefmt(sensor, &sensor->fmt);
3738 if (ret)
3739 goto out;
3740 sensor->pending_fmt_change = false;
3741 }
3742
3743 if (ov5640_is_csi2(sensor))
3744 ret = ov5640_set_stream_mipi(sensor, enable);
3745 else
3746 ret = ov5640_set_stream_dvp(sensor, enable);
3747
3748 if (!ret)
3749 sensor->streaming = enable;
3750 }
3751
3752 out:
3753 mutex_unlock(&sensor->lock);
3754
3755 if (!enable || ret) {
3756 pm_runtime_mark_last_busy(&sensor->i2c_client->dev);
3757 pm_runtime_put_autosuspend(&sensor->i2c_client->dev);
3758 }
3759
3760 return ret;
3761 }
3762
3763 static int ov5640_init_state(struct v4l2_subdev *sd,
3764 struct v4l2_subdev_state *state)
3765 {
3766 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3767 struct v4l2_mbus_framefmt *fmt =
3768 v4l2_subdev_state_get_format(state, 0);
3769 struct v4l2_rect *crop = v4l2_subdev_state_get_crop(state, 0);
3770
3771 *fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt :
3772 ov5640_dvp_default_fmt;
3773
3774 crop->left = OV5640_PIXEL_ARRAY_LEFT;
3775 crop->top = OV5640_PIXEL_ARRAY_TOP;
3776 crop->width = OV5640_PIXEL_ARRAY_WIDTH;
3777 crop->height = OV5640_PIXEL_ARRAY_HEIGHT;
3778
3779 return 0;
3780 }
3781
3782 static const struct v4l2_subdev_core_ops ov5640_core_ops = {
3783 .log_status = v4l2_ctrl_subdev_log_status,
3784 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
3785 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
3786 };
3787
3788 static const struct v4l2_subdev_video_ops ov5640_video_ops = {
3789 .s_stream = ov5640_s_stream,
3790 };
3791
3792 static const struct v4l2_subdev_pad_ops ov5640_pad_ops = {
3793 .enum_mbus_code = ov5640_enum_mbus_code,
3794 .get_fmt = ov5640_get_fmt,
3795 .set_fmt = ov5640_set_fmt,
3796 .get_selection = ov5640_get_selection,
3797 .get_frame_interval = ov5640_get_frame_interval,
3798 .set_frame_interval = ov5640_set_frame_interval,
3799 .enum_frame_size = ov5640_enum_frame_size,
3800 .enum_frame_interval = ov5640_enum_frame_interval,
3801 };
3802
3803 static const struct v4l2_subdev_ops ov5640_subdev_ops = {
3804 .core = &ov5640_core_ops,
3805 .video = &ov5640_video_ops,
3806 .pad = &ov5640_pad_ops,
3807 };
3808
3809 static const struct v4l2_subdev_internal_ops ov5640_internal_ops = {
3810 .init_state = ov5640_init_state,
3811 };
3812
3813 static int ov5640_get_regulators(struct ov5640_dev *sensor)
3814 {
3815 int i;
3816
3817 for (i = 0; i < OV5640_NUM_SUPPLIES; i++)
3818 sensor->supplies[i].supply = ov5640_supply_name[i];
3819
3820 return devm_regulator_bulk_get(&sensor->i2c_client->dev,
3821 OV5640_NUM_SUPPLIES,
3822 sensor->supplies);
3823 }
3824
3825 static int ov5640_check_chip_id(struct ov5640_dev *sensor)
3826 {
3827 struct i2c_client *client = sensor->i2c_client;
3828 int ret = 0;
3829 u16 chip_id;
3830
3831 ret = ov5640_read_reg16(sensor, OV5640_REG_CHIP_ID, &chip_id);
3832 if (ret) {
3833 dev_err(&client->dev, "%s: failed to read chip identifier\n",
3834 __func__);
3835 return ret;
3836 }
3837
3838 if (chip_id != 0x5640) {
3839 dev_err(&client->dev, "%s: wrong chip identifier, expected 0x5640, got 0x%x\n",
3840 __func__, chip_id);
3841 return -ENXIO;
3842 }
3843
3844 return 0;
3845 }
3846
3847 static int ov5640_probe(struct i2c_client *client)
3848 {
3849 struct device *dev = &client->dev;
3850 struct fwnode_handle *endpoint;
3851 struct ov5640_dev *sensor;
3852 int ret;
3853
3854 sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
3855 if (!sensor)
3856 return -ENOMEM;
3857
3858 sensor->i2c_client = client;
3859
3860 /*
3861 * default init sequence initialize sensor to
3862 * YUV422 UYVY VGA(30FPS in parallel mode, 60 in MIPI CSI-2 mode)
3863 */
3864 sensor->frame_interval.numerator = 1;
3865 sensor->frame_interval.denominator = ov5640_framerates[OV5640_30_FPS];
3866 sensor->current_fr = OV5640_30_FPS;
3867 sensor->current_mode =
3868 &ov5640_mode_data[OV5640_MODE_VGA_640_480];
3869 sensor->last_mode = sensor->current_mode;
3870 sensor->current_link_freq =
3871 ov5640_csi2_link_freqs[OV5640_DEFAULT_LINK_FREQ];
3872
3873 sensor->ae_target = 52;
3874
3875 endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev),
3876 NULL);
3877 if (!endpoint) {
3878 dev_err(dev, "endpoint node not found\n");
3879 return -EINVAL;
3880 }
3881
3882 ret = v4l2_fwnode_endpoint_parse(endpoint, &sensor->ep);
3883 fwnode_handle_put(endpoint);
3884 if (ret) {
3885 dev_err(dev, "Could not parse endpoint\n");
3886 return ret;
3887 }
3888
3889 if (sensor->ep.bus_type != V4L2_MBUS_PARALLEL &&
3890 sensor->ep.bus_type != V4L2_MBUS_CSI2_DPHY &&
3891 sensor->ep.bus_type != V4L2_MBUS_BT656) {
3892 dev_err(dev, "Unsupported bus type %d\n", sensor->ep.bus_type);
3893 return -EINVAL;
3894 }
3895
3896 sensor->fmt = ov5640_is_csi2(sensor) ? ov5640_csi2_default_fmt :
3897 ov5640_dvp_default_fmt;
3898
3899 /* get system clock (xclk) */
3900 sensor->xclk = devm_clk_get(dev, "xclk");
3901 if (IS_ERR(sensor->xclk)) {
3902 dev_err(dev, "failed to get xclk\n");
3903 return PTR_ERR(sensor->xclk);
3904 }
3905
3906 sensor->xclk_freq = clk_get_rate(sensor->xclk);
3907 if (sensor->xclk_freq < OV5640_XCLK_MIN ||
3908 sensor->xclk_freq > OV5640_XCLK_MAX) {
3909 dev_err(dev, "xclk frequency out of range: %d Hz\n",
3910 sensor->xclk_freq);
3911 return -EINVAL;
3912 }
3913
3914 /* request optional power down pin */
3915 sensor->pwdn_gpio = devm_gpiod_get_optional(dev, "powerdown",
3916 GPIOD_OUT_HIGH);
3917 if (IS_ERR(sensor->pwdn_gpio))
3918 return PTR_ERR(sensor->pwdn_gpio);
3919
3920 /* request optional reset pin */
3921 sensor->reset_gpio = devm_gpiod_get_optional(dev, "reset",
3922 GPIOD_OUT_HIGH);
3923 if (IS_ERR(sensor->reset_gpio))
3924 return PTR_ERR(sensor->reset_gpio);
3925
3926 v4l2_i2c_subdev_init(&sensor->sd, client, &ov5640_subdev_ops);
3927 sensor->sd.internal_ops = &ov5640_internal_ops;
3928
3929 sensor->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
3930 V4L2_SUBDEV_FL_HAS_EVENTS;
3931 sensor->pad.flags = MEDIA_PAD_FL_SOURCE;
3932 sensor->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
3933 ret = media_entity_pads_init(&sensor->sd.entity, 1, &sensor->pad);
3934 if (ret)
3935 return ret;
3936
3937 ret = ov5640_get_regulators(sensor);
3938 if (ret)
3939 goto entity_cleanup;
3940
3941 mutex_init(&sensor->lock);
3942
3943 ret = ov5640_init_controls(sensor);
3944 if (ret)
3945 goto entity_cleanup;
3946
3947 ret = ov5640_sensor_resume(dev);
3948 if (ret) {
3949 dev_err(dev, "failed to power on\n");
3950 goto free_ctrls;
3951 }
3952
3953 pm_runtime_set_active(dev);
3954 pm_runtime_get_noresume(dev);
3955 pm_runtime_enable(dev);
3956
3957 ret = ov5640_check_chip_id(sensor);
3958 if (ret)
3959 goto err_pm_runtime;
3960
3961 ret = v4l2_async_register_subdev_sensor(&sensor->sd);
3962 if (ret)
3963 goto err_pm_runtime;
3964
3965 pm_runtime_set_autosuspend_delay(dev, 1000);
3966 pm_runtime_use_autosuspend(dev);
3967 pm_runtime_mark_last_busy(dev);
3968 pm_runtime_put_autosuspend(dev);
3969
3970 return 0;
3971
3972 err_pm_runtime:
3973 pm_runtime_put_noidle(dev);
3974 pm_runtime_disable(dev);
3975 ov5640_sensor_suspend(dev);
3976 free_ctrls:
3977 v4l2_ctrl_handler_free(&sensor->ctrls.handler);
3978 entity_cleanup:
3979 media_entity_cleanup(&sensor->sd.entity);
3980 mutex_destroy(&sensor->lock);
3981 return ret;
3982 }
3983
3984 static void ov5640_remove(struct i2c_client *client)
3985 {
3986 struct v4l2_subdev *sd = i2c_get_clientdata(client);
3987 struct ov5640_dev *sensor = to_ov5640_dev(sd);
3988 struct device *dev = &client->dev;
3989
3990 pm_runtime_disable(dev);
3991 if (!pm_runtime_status_suspended(dev))
3992 ov5640_sensor_suspend(dev);
3993 pm_runtime_set_suspended(dev);
3994
3995 v4l2_async_unregister_subdev(&sensor->sd);
3996 media_entity_cleanup(&sensor->sd.entity);
3997 v4l2_ctrl_handler_free(&sensor->ctrls.handler);
3998 mutex_destroy(&sensor->lock);
3999 }
4000
4001 static const struct dev_pm_ops ov5640_pm_ops = {
4002 SET_RUNTIME_PM_OPS(ov5640_sensor_suspend, ov5640_sensor_resume, NULL)
4003 };
4004
4005 static const struct i2c_device_id ov5640_id[] = {
4006 { "ov5640" },
4007 {}
4008 };
4009 MODULE_DEVICE_TABLE(i2c, ov5640_id);
4010
4011 static const struct of_device_id ov5640_dt_ids[] = {
4012 { .compatible = "ovti,ov5640" },
4013 { /* sentinel */ }
4014 };
4015 MODULE_DEVICE_TABLE(of, ov5640_dt_ids);
4016
4017 static struct i2c_driver ov5640_i2c_driver = {
4018 .driver = {
4019 .name = "ov5640",
4020 .of_match_table = ov5640_dt_ids,
4021 .pm = &ov5640_pm_ops,
4022 },
4023 .id_table = ov5640_id,
4024 .probe = ov5640_probe,
4025 .remove = ov5640_remove,
4026 };
4027
4028 module_i2c_driver(ov5640_i2c_driver);
4029
4030 MODULE_DESCRIPTION("OV5640 MIPI Camera Subdev Driver");
4031 MODULE_LICENSE("GPL");
Kernel DRM miscellaneous fixes and cross-tree changes