1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Omnivision OV2659 CMOS Image Sensor driver
4 *
5 * Copyright (C) 2015 Texas Instruments, Inc.
6 *
7 * Benoit Parrot <bparrot@ti.com>
8 * Lad, Prabhakar <prabhakar.csengg@gmail.com>
9 */
10
11 #include <linux/clk.h>
12 #include <linux/delay.h>
13 #include <linux/gpio/consumer.h>
14 #include <linux/i2c.h>
15 #include <linux/module.h>
16 #include <linux/of_graph.h>
17 #include <linux/pm_runtime.h>
18
19 #include <media/i2c/ov2659.h>
20 #include <media/v4l2-ctrls.h>
21 #include <media/v4l2-event.h>
22 #include <media/v4l2-fwnode.h>
23 #include <media/v4l2-image-sizes.h>
24 #include <media/v4l2-subdev.h>
25
26 #define DRIVER_NAME "ov2659"
27
28 /*
29 * OV2659 register definitions
30 */
31 #define REG_SOFTWARE_STANDBY 0x0100
32 #define REG_SOFTWARE_RESET 0x0103
33 #define REG_IO_CTRL00 0x3000
34 #define REG_IO_CTRL01 0x3001
35 #define REG_IO_CTRL02 0x3002
36 #define REG_OUTPUT_VALUE00 0x3008
37 #define REG_OUTPUT_VALUE01 0x3009
38 #define REG_OUTPUT_VALUE02 0x300d
39 #define REG_OUTPUT_SELECT00 0x300e
40 #define REG_OUTPUT_SELECT01 0x300f
41 #define REG_OUTPUT_SELECT02 0x3010
42 #define REG_OUTPUT_DRIVE 0x3011
43 #define REG_INPUT_READOUT00 0x302d
44 #define REG_INPUT_READOUT01 0x302e
45 #define REG_INPUT_READOUT02 0x302f
46
47 #define REG_SC_PLL_CTRL0 0x3003
48 #define REG_SC_PLL_CTRL1 0x3004
49 #define REG_SC_PLL_CTRL2 0x3005
50 #define REG_SC_PLL_CTRL3 0x3006
51 #define REG_SC_CHIP_ID_H 0x300a
52 #define REG_SC_CHIP_ID_L 0x300b
53 #define REG_SC_PWC 0x3014
54 #define REG_SC_CLKRST0 0x301a
55 #define REG_SC_CLKRST1 0x301b
56 #define REG_SC_CLKRST2 0x301c
57 #define REG_SC_CLKRST3 0x301d
58 #define REG_SC_SUB_ID 0x302a
59 #define REG_SC_SCCB_ID 0x302b
60
61 #define REG_GROUP_ADDRESS_00 0x3200
62 #define REG_GROUP_ADDRESS_01 0x3201
63 #define REG_GROUP_ADDRESS_02 0x3202
64 #define REG_GROUP_ADDRESS_03 0x3203
65 #define REG_GROUP_ACCESS 0x3208
66
67 #define REG_AWB_R_GAIN_H 0x3400
68 #define REG_AWB_R_GAIN_L 0x3401
69 #define REG_AWB_G_GAIN_H 0x3402
70 #define REG_AWB_G_GAIN_L 0x3403
71 #define REG_AWB_B_GAIN_H 0x3404
72 #define REG_AWB_B_GAIN_L 0x3405
73 #define REG_AWB_MANUAL_CONTROL 0x3406
74
75 #define REG_TIMING_HS_H 0x3800
76 #define REG_TIMING_HS_L 0x3801
77 #define REG_TIMING_VS_H 0x3802
78 #define REG_TIMING_VS_L 0x3803
79 #define REG_TIMING_HW_H 0x3804
80 #define REG_TIMING_HW_L 0x3805
81 #define REG_TIMING_VH_H 0x3806
82 #define REG_TIMING_VH_L 0x3807
83 #define REG_TIMING_DVPHO_H 0x3808
84 #define REG_TIMING_DVPHO_L 0x3809
85 #define REG_TIMING_DVPVO_H 0x380a
86 #define REG_TIMING_DVPVO_L 0x380b
87 #define REG_TIMING_HTS_H 0x380c
88 #define REG_TIMING_HTS_L 0x380d
89 #define REG_TIMING_VTS_H 0x380e
90 #define REG_TIMING_VTS_L 0x380f
91 #define REG_TIMING_HOFFS_H 0x3810
92 #define REG_TIMING_HOFFS_L 0x3811
93 #define REG_TIMING_VOFFS_H 0x3812
94 #define REG_TIMING_VOFFS_L 0x3813
95 #define REG_TIMING_XINC 0x3814
96 #define REG_TIMING_YINC 0x3815
97 #define REG_TIMING_VERT_FORMAT 0x3820
98 #define REG_TIMING_HORIZ_FORMAT 0x3821
99
100 #define REG_FORMAT_CTRL00 0x4300
101
102 #define REG_VFIFO_READ_START_H 0x4608
103 #define REG_VFIFO_READ_START_L 0x4609
104
105 #define REG_DVP_CTRL02 0x4708
106
107 #define REG_ISP_CTRL00 0x5000
108 #define REG_ISP_CTRL01 0x5001
109 #define REG_ISP_CTRL02 0x5002
110
111 #define REG_LENC_RED_X0_H 0x500c
112 #define REG_LENC_RED_X0_L 0x500d
113 #define REG_LENC_RED_Y0_H 0x500e
114 #define REG_LENC_RED_Y0_L 0x500f
115 #define REG_LENC_RED_A1 0x5010
116 #define REG_LENC_RED_B1 0x5011
117 #define REG_LENC_RED_A2_B2 0x5012
118 #define REG_LENC_GREEN_X0_H 0x5013
119 #define REG_LENC_GREEN_X0_L 0x5014
120 #define REG_LENC_GREEN_Y0_H 0x5015
121 #define REG_LENC_GREEN_Y0_L 0x5016
122 #define REG_LENC_GREEN_A1 0x5017
123 #define REG_LENC_GREEN_B1 0x5018
124 #define REG_LENC_GREEN_A2_B2 0x5019
125 #define REG_LENC_BLUE_X0_H 0x501a
126 #define REG_LENC_BLUE_X0_L 0x501b
127 #define REG_LENC_BLUE_Y0_H 0x501c
128 #define REG_LENC_BLUE_Y0_L 0x501d
129 #define REG_LENC_BLUE_A1 0x501e
130 #define REG_LENC_BLUE_B1 0x501f
131 #define REG_LENC_BLUE_A2_B2 0x5020
132
133 #define REG_AWB_CTRL00 0x5035
134 #define REG_AWB_CTRL01 0x5036
135 #define REG_AWB_CTRL02 0x5037
136 #define REG_AWB_CTRL03 0x5038
137 #define REG_AWB_CTRL04 0x5039
138 #define REG_AWB_LOCAL_LIMIT 0x503a
139 #define REG_AWB_CTRL12 0x5049
140 #define REG_AWB_CTRL13 0x504a
141 #define REG_AWB_CTRL14 0x504b
142
143 #define REG_SHARPENMT_THRESH1 0x5064
144 #define REG_SHARPENMT_THRESH2 0x5065
145 #define REG_SHARPENMT_OFFSET1 0x5066
146 #define REG_SHARPENMT_OFFSET2 0x5067
147 #define REG_DENOISE_THRESH1 0x5068
148 #define REG_DENOISE_THRESH2 0x5069
149 #define REG_DENOISE_OFFSET1 0x506a
150 #define REG_DENOISE_OFFSET2 0x506b
151 #define REG_SHARPEN_THRESH1 0x506c
152 #define REG_SHARPEN_THRESH2 0x506d
153 #define REG_CIP_CTRL00 0x506e
154 #define REG_CIP_CTRL01 0x506f
155
156 #define REG_CMX_SIGN 0x5079
157 #define REG_CMX_MISC_CTRL 0x507a
158
159 #define REG_PRE_ISP_CTRL00 0x50a0
160 #define TEST_PATTERN_ENABLE BIT(7)
161 #define VERTICAL_COLOR_BAR_MASK 0x53
162
163 #define REG_NULL 0x0000 /* Array end token */
164
165 #define OV265X_ID(_msb, _lsb) ((_msb) << 8 | (_lsb))
166 #define OV2659_ID 0x2656
167
168 struct sensor_register {
169 u16 addr;
170 u8 value;
171 };
172
173 struct ov2659_framesize {
174 u16 width;
175 u16 height;
176 u16 max_exp_lines;
177 const struct sensor_register *regs;
178 };
179
180 struct ov2659_pll_ctrl {
181 u8 ctrl1;
182 u8 ctrl2;
183 u8 ctrl3;
184 };
185
186 struct ov2659_pixfmt {
187 u32 code;
188 /* Output format Register Value (REG_FORMAT_CTRL00) */
189 struct sensor_register *format_ctrl_regs;
190 };
191
192 struct pll_ctrl_reg {
193 unsigned int div;
194 unsigned char reg;
195 };
196
197 struct ov2659 {
198 struct v4l2_subdev sd;
199 struct media_pad pad;
200 struct v4l2_mbus_framefmt format;
201 unsigned int xvclk_frequency;
202 const struct ov2659_platform_data *pdata;
203 struct mutex lock;
204 struct i2c_client *client;
205 struct v4l2_ctrl_handler ctrls;
206 struct v4l2_ctrl *link_frequency;
207 struct clk *clk;
208 const struct ov2659_framesize *frame_size;
209 struct sensor_register *format_ctrl_regs;
210 struct ov2659_pll_ctrl pll;
211 int streaming;
212 /* used to control the sensor PWDN pin */
213 struct gpio_desc *pwdn_gpio;
214 /* used to control the sensor RESETB pin */
215 struct gpio_desc *resetb_gpio;
216 };
217
218 static const struct sensor_register ov2659_init_regs[] = {
219 { REG_IO_CTRL00, 0x03 },
220 { REG_IO_CTRL01, 0xff },
221 { REG_IO_CTRL02, 0xe0 },
222 { 0x3633, 0x3d },
223 { 0x3620, 0x02 },
224 { 0x3631, 0x11 },
225 { 0x3612, 0x04 },
226 { 0x3630, 0x20 },
227 { 0x4702, 0x02 },
228 { 0x370c, 0x34 },
229 { REG_TIMING_HS_H, 0x00 },
230 { REG_TIMING_HS_L, 0x00 },
231 { REG_TIMING_VS_H, 0x00 },
232 { REG_TIMING_VS_L, 0x00 },
233 { REG_TIMING_HW_H, 0x06 },
234 { REG_TIMING_HW_L, 0x5f },
235 { REG_TIMING_VH_H, 0x04 },
236 { REG_TIMING_VH_L, 0xb7 },
237 { REG_TIMING_DVPHO_H, 0x03 },
238 { REG_TIMING_DVPHO_L, 0x20 },
239 { REG_TIMING_DVPVO_H, 0x02 },
240 { REG_TIMING_DVPVO_L, 0x58 },
241 { REG_TIMING_HTS_H, 0x05 },
242 { REG_TIMING_HTS_L, 0x14 },
243 { REG_TIMING_VTS_H, 0x02 },
244 { REG_TIMING_VTS_L, 0x68 },
245 { REG_TIMING_HOFFS_L, 0x08 },
246 { REG_TIMING_VOFFS_L, 0x02 },
247 { REG_TIMING_XINC, 0x31 },
248 { REG_TIMING_YINC, 0x31 },
249 { 0x3a02, 0x02 },
250 { 0x3a03, 0x68 },
251 { 0x3a08, 0x00 },
252 { 0x3a09, 0x5c },
253 { 0x3a0a, 0x00 },
254 { 0x3a0b, 0x4d },
255 { 0x3a0d, 0x08 },
256 { 0x3a0e, 0x06 },
257 { 0x3a14, 0x02 },
258 { 0x3a15, 0x28 },
259 { REG_DVP_CTRL02, 0x01 },
260 { 0x3623, 0x00 },
261 { 0x3634, 0x76 },
262 { 0x3701, 0x44 },
263 { 0x3702, 0x18 },
264 { 0x3703, 0x24 },
265 { 0x3704, 0x24 },
266 { 0x3705, 0x0c },
267 { REG_TIMING_VERT_FORMAT, 0x81 },
268 { REG_TIMING_HORIZ_FORMAT, 0x01 },
269 { 0x370a, 0x52 },
270 { REG_VFIFO_READ_START_H, 0x00 },
271 { REG_VFIFO_READ_START_L, 0x80 },
272 { REG_FORMAT_CTRL00, 0x30 },
273 { 0x5086, 0x02 },
274 { REG_ISP_CTRL00, 0xfb },
275 { REG_ISP_CTRL01, 0x1f },
276 { REG_ISP_CTRL02, 0x00 },
277 { 0x5025, 0x0e },
278 { 0x5026, 0x18 },
279 { 0x5027, 0x34 },
280 { 0x5028, 0x4c },
281 { 0x5029, 0x62 },
282 { 0x502a, 0x74 },
283 { 0x502b, 0x85 },
284 { 0x502c, 0x92 },
285 { 0x502d, 0x9e },
286 { 0x502e, 0xb2 },
287 { 0x502f, 0xc0 },
288 { 0x5030, 0xcc },
289 { 0x5031, 0xe0 },
290 { 0x5032, 0xee },
291 { 0x5033, 0xf6 },
292 { 0x5034, 0x11 },
293 { 0x5070, 0x1c },
294 { 0x5071, 0x5b },
295 { 0x5072, 0x05 },
296 { 0x5073, 0x20 },
297 { 0x5074, 0x94 },
298 { 0x5075, 0xb4 },
299 { 0x5076, 0xb4 },
300 { 0x5077, 0xaf },
301 { 0x5078, 0x05 },
302 { REG_CMX_SIGN, 0x98 },
303 { REG_CMX_MISC_CTRL, 0x21 },
304 { REG_AWB_CTRL00, 0x6a },
305 { REG_AWB_CTRL01, 0x11 },
306 { REG_AWB_CTRL02, 0x92 },
307 { REG_AWB_CTRL03, 0x21 },
308 { REG_AWB_CTRL04, 0xe1 },
309 { REG_AWB_LOCAL_LIMIT, 0x01 },
310 { 0x503c, 0x05 },
311 { 0x503d, 0x08 },
312 { 0x503e, 0x08 },
313 { 0x503f, 0x64 },
314 { 0x5040, 0x58 },
315 { 0x5041, 0x2a },
316 { 0x5042, 0xc5 },
317 { 0x5043, 0x2e },
318 { 0x5044, 0x3a },
319 { 0x5045, 0x3c },
320 { 0x5046, 0x44 },
321 { 0x5047, 0xf8 },
322 { 0x5048, 0x08 },
323 { REG_AWB_CTRL12, 0x70 },
324 { REG_AWB_CTRL13, 0xf0 },
325 { REG_AWB_CTRL14, 0xf0 },
326 { REG_LENC_RED_X0_H, 0x03 },
327 { REG_LENC_RED_X0_L, 0x20 },
328 { REG_LENC_RED_Y0_H, 0x02 },
329 { REG_LENC_RED_Y0_L, 0x5c },
330 { REG_LENC_RED_A1, 0x48 },
331 { REG_LENC_RED_B1, 0x00 },
332 { REG_LENC_RED_A2_B2, 0x66 },
333 { REG_LENC_GREEN_X0_H, 0x03 },
334 { REG_LENC_GREEN_X0_L, 0x30 },
335 { REG_LENC_GREEN_Y0_H, 0x02 },
336 { REG_LENC_GREEN_Y0_L, 0x7c },
337 { REG_LENC_GREEN_A1, 0x40 },
338 { REG_LENC_GREEN_B1, 0x00 },
339 { REG_LENC_GREEN_A2_B2, 0x66 },
340 { REG_LENC_BLUE_X0_H, 0x03 },
341 { REG_LENC_BLUE_X0_L, 0x10 },
342 { REG_LENC_BLUE_Y0_H, 0x02 },
343 { REG_LENC_BLUE_Y0_L, 0x7c },
344 { REG_LENC_BLUE_A1, 0x3a },
345 { REG_LENC_BLUE_B1, 0x00 },
346 { REG_LENC_BLUE_A2_B2, 0x66 },
347 { REG_CIP_CTRL00, 0x44 },
348 { REG_SHARPENMT_THRESH1, 0x08 },
349 { REG_SHARPENMT_THRESH2, 0x10 },
350 { REG_SHARPENMT_OFFSET1, 0x12 },
351 { REG_SHARPENMT_OFFSET2, 0x02 },
352 { REG_SHARPEN_THRESH1, 0x08 },
353 { REG_SHARPEN_THRESH2, 0x10 },
354 { REG_CIP_CTRL01, 0xa6 },
355 { REG_DENOISE_THRESH1, 0x08 },
356 { REG_DENOISE_THRESH2, 0x10 },
357 { REG_DENOISE_OFFSET1, 0x04 },
358 { REG_DENOISE_OFFSET2, 0x12 },
359 { 0x507e, 0x40 },
360 { 0x507f, 0x20 },
361 { 0x507b, 0x02 },
362 { REG_CMX_MISC_CTRL, 0x01 },
363 { 0x5084, 0x0c },
364 { 0x5085, 0x3e },
365 { 0x5005, 0x80 },
366 { 0x3a0f, 0x30 },
367 { 0x3a10, 0x28 },
368 { 0x3a1b, 0x32 },
369 { 0x3a1e, 0x26 },
370 { 0x3a11, 0x60 },
371 { 0x3a1f, 0x14 },
372 { 0x5060, 0x69 },
373 { 0x5061, 0x7d },
374 { 0x5062, 0x7d },
375 { 0x5063, 0x69 },
376 { REG_NULL, 0x00 },
377 };
378
379 /* 1280X720 720p */
380 static struct sensor_register ov2659_720p[] = {
381 { REG_TIMING_HS_H, 0x00 },
382 { REG_TIMING_HS_L, 0xa0 },
383 { REG_TIMING_VS_H, 0x00 },
384 { REG_TIMING_VS_L, 0xf0 },
385 { REG_TIMING_HW_H, 0x05 },
386 { REG_TIMING_HW_L, 0xbf },
387 { REG_TIMING_VH_H, 0x03 },
388 { REG_TIMING_VH_L, 0xcb },
389 { REG_TIMING_DVPHO_H, 0x05 },
390 { REG_TIMING_DVPHO_L, 0x00 },
391 { REG_TIMING_DVPVO_H, 0x02 },
392 { REG_TIMING_DVPVO_L, 0xd0 },
393 { REG_TIMING_HTS_H, 0x06 },
394 { REG_TIMING_HTS_L, 0x4c },
395 { REG_TIMING_VTS_H, 0x02 },
396 { REG_TIMING_VTS_L, 0xe8 },
397 { REG_TIMING_HOFFS_L, 0x10 },
398 { REG_TIMING_VOFFS_L, 0x06 },
399 { REG_TIMING_XINC, 0x11 },
400 { REG_TIMING_YINC, 0x11 },
401 { REG_TIMING_VERT_FORMAT, 0x80 },
402 { REG_TIMING_HORIZ_FORMAT, 0x00 },
403 { 0x370a, 0x12 },
404 { 0x3a03, 0xe8 },
405 { 0x3a09, 0x6f },
406 { 0x3a0b, 0x5d },
407 { 0x3a15, 0x9a },
408 { REG_VFIFO_READ_START_H, 0x00 },
409 { REG_VFIFO_READ_START_L, 0x80 },
410 { REG_ISP_CTRL02, 0x00 },
411 { REG_NULL, 0x00 },
412 };
413
414 /* 1600X1200 UXGA */
415 static struct sensor_register ov2659_uxga[] = {
416 { REG_TIMING_HS_H, 0x00 },
417 { REG_TIMING_HS_L, 0x00 },
418 { REG_TIMING_VS_H, 0x00 },
419 { REG_TIMING_VS_L, 0x00 },
420 { REG_TIMING_HW_H, 0x06 },
421 { REG_TIMING_HW_L, 0x5f },
422 { REG_TIMING_VH_H, 0x04 },
423 { REG_TIMING_VH_L, 0xbb },
424 { REG_TIMING_DVPHO_H, 0x06 },
425 { REG_TIMING_DVPHO_L, 0x40 },
426 { REG_TIMING_DVPVO_H, 0x04 },
427 { REG_TIMING_DVPVO_L, 0xb0 },
428 { REG_TIMING_HTS_H, 0x07 },
429 { REG_TIMING_HTS_L, 0x9f },
430 { REG_TIMING_VTS_H, 0x04 },
431 { REG_TIMING_VTS_L, 0xd0 },
432 { REG_TIMING_HOFFS_L, 0x10 },
433 { REG_TIMING_VOFFS_L, 0x06 },
434 { REG_TIMING_XINC, 0x11 },
435 { REG_TIMING_YINC, 0x11 },
436 { 0x3a02, 0x04 },
437 { 0x3a03, 0xd0 },
438 { 0x3a08, 0x00 },
439 { 0x3a09, 0xb8 },
440 { 0x3a0a, 0x00 },
441 { 0x3a0b, 0x9a },
442 { 0x3a0d, 0x08 },
443 { 0x3a0e, 0x06 },
444 { 0x3a14, 0x04 },
445 { 0x3a15, 0x50 },
446 { 0x3623, 0x00 },
447 { 0x3634, 0x44 },
448 { 0x3701, 0x44 },
449 { 0x3702, 0x30 },
450 { 0x3703, 0x48 },
451 { 0x3704, 0x48 },
452 { 0x3705, 0x18 },
453 { REG_TIMING_VERT_FORMAT, 0x80 },
454 { REG_TIMING_HORIZ_FORMAT, 0x00 },
455 { 0x370a, 0x12 },
456 { REG_VFIFO_READ_START_H, 0x00 },
457 { REG_VFIFO_READ_START_L, 0x80 },
458 { REG_ISP_CTRL02, 0x00 },
459 { REG_NULL, 0x00 },
460 };
461
462 /* 1280X1024 SXGA */
463 static struct sensor_register ov2659_sxga[] = {
464 { REG_TIMING_HS_H, 0x00 },
465 { REG_TIMING_HS_L, 0x00 },
466 { REG_TIMING_VS_H, 0x00 },
467 { REG_TIMING_VS_L, 0x00 },
468 { REG_TIMING_HW_H, 0x06 },
469 { REG_TIMING_HW_L, 0x5f },
470 { REG_TIMING_VH_H, 0x04 },
471 { REG_TIMING_VH_L, 0xb7 },
472 { REG_TIMING_DVPHO_H, 0x05 },
473 { REG_TIMING_DVPHO_L, 0x00 },
474 { REG_TIMING_DVPVO_H, 0x04 },
475 { REG_TIMING_DVPVO_L, 0x00 },
476 { REG_TIMING_HTS_H, 0x07 },
477 { REG_TIMING_HTS_L, 0x9c },
478 { REG_TIMING_VTS_H, 0x04 },
479 { REG_TIMING_VTS_L, 0xd0 },
480 { REG_TIMING_HOFFS_L, 0x10 },
481 { REG_TIMING_VOFFS_L, 0x06 },
482 { REG_TIMING_XINC, 0x11 },
483 { REG_TIMING_YINC, 0x11 },
484 { 0x3a02, 0x02 },
485 { 0x3a03, 0x68 },
486 { 0x3a08, 0x00 },
487 { 0x3a09, 0x5c },
488 { 0x3a0a, 0x00 },
489 { 0x3a0b, 0x4d },
490 { 0x3a0d, 0x08 },
491 { 0x3a0e, 0x06 },
492 { 0x3a14, 0x02 },
493 { 0x3a15, 0x28 },
494 { 0x3623, 0x00 },
495 { 0x3634, 0x76 },
496 { 0x3701, 0x44 },
497 { 0x3702, 0x18 },
498 { 0x3703, 0x24 },
499 { 0x3704, 0x24 },
500 { 0x3705, 0x0c },
501 { REG_TIMING_VERT_FORMAT, 0x80 },
502 { REG_TIMING_HORIZ_FORMAT, 0x00 },
503 { 0x370a, 0x52 },
504 { REG_VFIFO_READ_START_H, 0x00 },
505 { REG_VFIFO_READ_START_L, 0x80 },
506 { REG_ISP_CTRL02, 0x00 },
507 { REG_NULL, 0x00 },
508 };
509
510 /* 1024X768 SXGA */
511 static struct sensor_register ov2659_xga[] = {
512 { REG_TIMING_HS_H, 0x00 },
513 { REG_TIMING_HS_L, 0x00 },
514 { REG_TIMING_VS_H, 0x00 },
515 { REG_TIMING_VS_L, 0x00 },
516 { REG_TIMING_HW_H, 0x06 },
517 { REG_TIMING_HW_L, 0x5f },
518 { REG_TIMING_VH_H, 0x04 },
519 { REG_TIMING_VH_L, 0xb7 },
520 { REG_TIMING_DVPHO_H, 0x04 },
521 { REG_TIMING_DVPHO_L, 0x00 },
522 { REG_TIMING_DVPVO_H, 0x03 },
523 { REG_TIMING_DVPVO_L, 0x00 },
524 { REG_TIMING_HTS_H, 0x07 },
525 { REG_TIMING_HTS_L, 0x9c },
526 { REG_TIMING_VTS_H, 0x04 },
527 { REG_TIMING_VTS_L, 0xd0 },
528 { REG_TIMING_HOFFS_L, 0x10 },
529 { REG_TIMING_VOFFS_L, 0x06 },
530 { REG_TIMING_XINC, 0x11 },
531 { REG_TIMING_YINC, 0x11 },
532 { 0x3a02, 0x02 },
533 { 0x3a03, 0x68 },
534 { 0x3a08, 0x00 },
535 { 0x3a09, 0x5c },
536 { 0x3a0a, 0x00 },
537 { 0x3a0b, 0x4d },
538 { 0x3a0d, 0x08 },
539 { 0x3a0e, 0x06 },
540 { 0x3a14, 0x02 },
541 { 0x3a15, 0x28 },
542 { 0x3623, 0x00 },
543 { 0x3634, 0x76 },
544 { 0x3701, 0x44 },
545 { 0x3702, 0x18 },
546 { 0x3703, 0x24 },
547 { 0x3704, 0x24 },
548 { 0x3705, 0x0c },
549 { REG_TIMING_VERT_FORMAT, 0x80 },
550 { REG_TIMING_HORIZ_FORMAT, 0x00 },
551 { 0x370a, 0x52 },
552 { REG_VFIFO_READ_START_H, 0x00 },
553 { REG_VFIFO_READ_START_L, 0x80 },
554 { REG_ISP_CTRL02, 0x00 },
555 { REG_NULL, 0x00 },
556 };
557
558 /* 800X600 SVGA */
559 static struct sensor_register ov2659_svga[] = {
560 { REG_TIMING_HS_H, 0x00 },
561 { REG_TIMING_HS_L, 0x00 },
562 { REG_TIMING_VS_H, 0x00 },
563 { REG_TIMING_VS_L, 0x00 },
564 { REG_TIMING_HW_H, 0x06 },
565 { REG_TIMING_HW_L, 0x5f },
566 { REG_TIMING_VH_H, 0x04 },
567 { REG_TIMING_VH_L, 0xb7 },
568 { REG_TIMING_DVPHO_H, 0x03 },
569 { REG_TIMING_DVPHO_L, 0x20 },
570 { REG_TIMING_DVPVO_H, 0x02 },
571 { REG_TIMING_DVPVO_L, 0x58 },
572 { REG_TIMING_HTS_H, 0x05 },
573 { REG_TIMING_HTS_L, 0x14 },
574 { REG_TIMING_VTS_H, 0x02 },
575 { REG_TIMING_VTS_L, 0x68 },
576 { REG_TIMING_HOFFS_L, 0x08 },
577 { REG_TIMING_VOFFS_L, 0x02 },
578 { REG_TIMING_XINC, 0x31 },
579 { REG_TIMING_YINC, 0x31 },
580 { 0x3a02, 0x02 },
581 { 0x3a03, 0x68 },
582 { 0x3a08, 0x00 },
583 { 0x3a09, 0x5c },
584 { 0x3a0a, 0x00 },
585 { 0x3a0b, 0x4d },
586 { 0x3a0d, 0x08 },
587 { 0x3a0e, 0x06 },
588 { 0x3a14, 0x02 },
589 { 0x3a15, 0x28 },
590 { 0x3623, 0x00 },
591 { 0x3634, 0x76 },
592 { 0x3701, 0x44 },
593 { 0x3702, 0x18 },
594 { 0x3703, 0x24 },
595 { 0x3704, 0x24 },
596 { 0x3705, 0x0c },
597 { REG_TIMING_VERT_FORMAT, 0x81 },
598 { REG_TIMING_HORIZ_FORMAT, 0x01 },
599 { 0x370a, 0x52 },
600 { REG_VFIFO_READ_START_H, 0x00 },
601 { REG_VFIFO_READ_START_L, 0x80 },
602 { REG_ISP_CTRL02, 0x00 },
603 { REG_NULL, 0x00 },
604 };
605
606 /* 640X480 VGA */
607 static struct sensor_register ov2659_vga[] = {
608 { REG_TIMING_HS_H, 0x00 },
609 { REG_TIMING_HS_L, 0x00 },
610 { REG_TIMING_VS_H, 0x00 },
611 { REG_TIMING_VS_L, 0x00 },
612 { REG_TIMING_HW_H, 0x06 },
613 { REG_TIMING_HW_L, 0x5f },
614 { REG_TIMING_VH_H, 0x04 },
615 { REG_TIMING_VH_L, 0xb7 },
616 { REG_TIMING_DVPHO_H, 0x02 },
617 { REG_TIMING_DVPHO_L, 0x80 },
618 { REG_TIMING_DVPVO_H, 0x01 },
619 { REG_TIMING_DVPVO_L, 0xe0 },
620 { REG_TIMING_HTS_H, 0x05 },
621 { REG_TIMING_HTS_L, 0x14 },
622 { REG_TIMING_VTS_H, 0x02 },
623 { REG_TIMING_VTS_L, 0x68 },
624 { REG_TIMING_HOFFS_L, 0x08 },
625 { REG_TIMING_VOFFS_L, 0x02 },
626 { REG_TIMING_XINC, 0x31 },
627 { REG_TIMING_YINC, 0x31 },
628 { 0x3a02, 0x02 },
629 { 0x3a03, 0x68 },
630 { 0x3a08, 0x00 },
631 { 0x3a09, 0x5c },
632 { 0x3a0a, 0x00 },
633 { 0x3a0b, 0x4d },
634 { 0x3a0d, 0x08 },
635 { 0x3a0e, 0x06 },
636 { 0x3a14, 0x02 },
637 { 0x3a15, 0x28 },
638 { 0x3623, 0x00 },
639 { 0x3634, 0x76 },
640 { 0x3701, 0x44 },
641 { 0x3702, 0x18 },
642 { 0x3703, 0x24 },
643 { 0x3704, 0x24 },
644 { 0x3705, 0x0c },
645 { REG_TIMING_VERT_FORMAT, 0x81 },
646 { REG_TIMING_HORIZ_FORMAT, 0x01 },
647 { 0x370a, 0x52 },
648 { REG_VFIFO_READ_START_H, 0x00 },
649 { REG_VFIFO_READ_START_L, 0xa0 },
650 { REG_ISP_CTRL02, 0x10 },
651 { REG_NULL, 0x00 },
652 };
653
654 /* 320X240 QVGA */
655 static struct sensor_register ov2659_qvga[] = {
656 { REG_TIMING_HS_H, 0x00 },
657 { REG_TIMING_HS_L, 0x00 },
658 { REG_TIMING_VS_H, 0x00 },
659 { REG_TIMING_VS_L, 0x00 },
660 { REG_TIMING_HW_H, 0x06 },
661 { REG_TIMING_HW_L, 0x5f },
662 { REG_TIMING_VH_H, 0x04 },
663 { REG_TIMING_VH_L, 0xb7 },
664 { REG_TIMING_DVPHO_H, 0x01 },
665 { REG_TIMING_DVPHO_L, 0x40 },
666 { REG_TIMING_DVPVO_H, 0x00 },
667 { REG_TIMING_DVPVO_L, 0xf0 },
668 { REG_TIMING_HTS_H, 0x05 },
669 { REG_TIMING_HTS_L, 0x14 },
670 { REG_TIMING_VTS_H, 0x02 },
671 { REG_TIMING_VTS_L, 0x68 },
672 { REG_TIMING_HOFFS_L, 0x08 },
673 { REG_TIMING_VOFFS_L, 0x02 },
674 { REG_TIMING_XINC, 0x31 },
675 { REG_TIMING_YINC, 0x31 },
676 { 0x3a02, 0x02 },
677 { 0x3a03, 0x68 },
678 { 0x3a08, 0x00 },
679 { 0x3a09, 0x5c },
680 { 0x3a0a, 0x00 },
681 { 0x3a0b, 0x4d },
682 { 0x3a0d, 0x08 },
683 { 0x3a0e, 0x06 },
684 { 0x3a14, 0x02 },
685 { 0x3a15, 0x28 },
686 { 0x3623, 0x00 },
687 { 0x3634, 0x76 },
688 { 0x3701, 0x44 },
689 { 0x3702, 0x18 },
690 { 0x3703, 0x24 },
691 { 0x3704, 0x24 },
692 { 0x3705, 0x0c },
693 { REG_TIMING_VERT_FORMAT, 0x81 },
694 { REG_TIMING_HORIZ_FORMAT, 0x01 },
695 { 0x370a, 0x52 },
696 { REG_VFIFO_READ_START_H, 0x00 },
697 { REG_VFIFO_READ_START_L, 0xa0 },
698 { REG_ISP_CTRL02, 0x10 },
699 { REG_NULL, 0x00 },
700 };
701
702 static const struct pll_ctrl_reg ctrl3[] = {
703 { 1, 0x00 },
704 { 2, 0x02 },
705 { 3, 0x03 },
706 { 4, 0x06 },
707 { 6, 0x0d },
708 { 8, 0x0e },
709 { 12, 0x0f },
710 { 16, 0x12 },
711 { 24, 0x13 },
712 { 32, 0x16 },
713 { 48, 0x1b },
714 { 64, 0x1e },
715 { 96, 0x1f },
716 { 0, 0x00 },
717 };
718
719 static const struct pll_ctrl_reg ctrl1[] = {
720 { 2, 0x10 },
721 { 4, 0x20 },
722 { 6, 0x30 },
723 { 8, 0x40 },
724 { 10, 0x50 },
725 { 12, 0x60 },
726 { 14, 0x70 },
727 { 16, 0x80 },
728 { 18, 0x90 },
729 { 20, 0xa0 },
730 { 22, 0xb0 },
731 { 24, 0xc0 },
732 { 26, 0xd0 },
733 { 28, 0xe0 },
734 { 30, 0xf0 },
735 { 0, 0x00 },
736 };
737
738 static const struct ov2659_framesize ov2659_framesizes[] = {
739 { /* QVGA */
740 .width = 320,
741 .height = 240,
742 .regs = ov2659_qvga,
743 .max_exp_lines = 248,
744 }, { /* VGA */
745 .width = 640,
746 .height = 480,
747 .regs = ov2659_vga,
748 .max_exp_lines = 498,
749 }, { /* SVGA */
750 .width = 800,
751 .height = 600,
752 .regs = ov2659_svga,
753 .max_exp_lines = 498,
754 }, { /* XGA */
755 .width = 1024,
756 .height = 768,
757 .regs = ov2659_xga,
758 .max_exp_lines = 498,
759 }, { /* 720P */
760 .width = 1280,
761 .height = 720,
762 .regs = ov2659_720p,
763 .max_exp_lines = 498,
764 }, { /* SXGA */
765 .width = 1280,
766 .height = 1024,
767 .regs = ov2659_sxga,
768 .max_exp_lines = 1048,
769 }, { /* UXGA */
770 .width = 1600,
771 .height = 1200,
772 .regs = ov2659_uxga,
773 .max_exp_lines = 498,
774 },
775 };
776
777 /* YUV422 YUYV*/
778 static struct sensor_register ov2659_format_yuyv[] = {
779 { REG_FORMAT_CTRL00, 0x30 },
780 { REG_NULL, 0x0 },
781 };
782
783 /* YUV422 UYVY */
784 static struct sensor_register ov2659_format_uyvy[] = {
785 { REG_FORMAT_CTRL00, 0x32 },
786 { REG_NULL, 0x0 },
787 };
788
789 /* Raw Bayer BGGR */
790 static struct sensor_register ov2659_format_bggr[] = {
791 { REG_FORMAT_CTRL00, 0x00 },
792 { REG_NULL, 0x0 },
793 };
794
795 /* RGB565 */
796 static struct sensor_register ov2659_format_rgb565[] = {
797 { REG_FORMAT_CTRL00, 0x60 },
798 { REG_NULL, 0x0 },
799 };
800
801 static const struct ov2659_pixfmt ov2659_formats[] = {
802 {
803 .code = MEDIA_BUS_FMT_YUYV8_2X8,
804 .format_ctrl_regs = ov2659_format_yuyv,
805 }, {
806 .code = MEDIA_BUS_FMT_UYVY8_2X8,
807 .format_ctrl_regs = ov2659_format_uyvy,
808 }, {
809 .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
810 .format_ctrl_regs = ov2659_format_rgb565,
811 }, {
812 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
813 .format_ctrl_regs = ov2659_format_bggr,
814 },
815 };
816
to_ov2659(struct v4l2_subdev * sd)817 static inline struct ov2659 *to_ov2659(struct v4l2_subdev *sd)
818 {
819 return container_of(sd, struct ov2659, sd);
820 }
821
822 /* sensor register write */
ov2659_write(struct i2c_client * client,u16 reg,u8 val)823 static int ov2659_write(struct i2c_client *client, u16 reg, u8 val)
824 {
825 struct i2c_msg msg;
826 u8 buf[3];
827 int ret;
828
829 buf[0] = reg >> 8;
830 buf[1] = reg & 0xFF;
831 buf[2] = val;
832
833 msg.addr = client->addr;
834 msg.flags = client->flags;
835 msg.buf = buf;
836 msg.len = sizeof(buf);
837
838 ret = i2c_transfer(client->adapter, &msg, 1);
839 if (ret >= 0)
840 return 0;
841
842 dev_dbg(&client->dev,
843 "ov2659 write reg(0x%x val:0x%x) failed !\n", reg, val);
844
845 return ret;
846 }
847
848 /* sensor register read */
ov2659_read(struct i2c_client * client,u16 reg,u8 * val)849 static int ov2659_read(struct i2c_client *client, u16 reg, u8 *val)
850 {
851 struct i2c_msg msg[2];
852 u8 buf[2];
853 int ret;
854
855 buf[0] = reg >> 8;
856 buf[1] = reg & 0xFF;
857
858 msg[0].addr = client->addr;
859 msg[0].flags = client->flags;
860 msg[0].buf = buf;
861 msg[0].len = sizeof(buf);
862
863 msg[1].addr = client->addr;
864 msg[1].flags = client->flags | I2C_M_RD;
865 msg[1].buf = buf;
866 msg[1].len = 1;
867
868 ret = i2c_transfer(client->adapter, msg, 2);
869 if (ret >= 0) {
870 *val = buf[0];
871 return 0;
872 }
873
874 dev_dbg(&client->dev,
875 "ov2659 read reg(0x%x val:0x%x) failed !\n", reg, *val);
876
877 return ret;
878 }
879
ov2659_write_array(struct i2c_client * client,const struct sensor_register * regs)880 static int ov2659_write_array(struct i2c_client *client,
881 const struct sensor_register *regs)
882 {
883 int i, ret = 0;
884
885 for (i = 0; ret == 0 && regs[i].addr; i++)
886 ret = ov2659_write(client, regs[i].addr, regs[i].value);
887
888 return ret;
889 }
890
ov2659_pll_calc_params(struct ov2659 * ov2659)891 static void ov2659_pll_calc_params(struct ov2659 *ov2659)
892 {
893 const struct ov2659_platform_data *pdata = ov2659->pdata;
894 u8 ctrl1_reg = 0, ctrl2_reg = 0, ctrl3_reg = 0;
895 struct i2c_client *client = ov2659->client;
896 unsigned int desired = pdata->link_frequency;
897 u32 prediv, postdiv, mult;
898 u32 bestdelta = -1;
899 u32 delta, actual;
900 int i, j;
901
902 for (i = 0; ctrl1[i].div != 0; i++) {
903 postdiv = ctrl1[i].div;
904 for (j = 0; ctrl3[j].div != 0; j++) {
905 prediv = ctrl3[j].div;
906 for (mult = 1; mult <= 63; mult++) {
907 actual = ov2659->xvclk_frequency;
908 actual *= mult;
909 actual /= prediv;
910 actual /= postdiv;
911 delta = actual - desired;
912 delta = abs(delta);
913
914 if ((delta < bestdelta) || (bestdelta == -1)) {
915 bestdelta = delta;
916 ctrl1_reg = ctrl1[i].reg;
917 ctrl2_reg = mult;
918 ctrl3_reg = ctrl3[j].reg;
919 }
920 }
921 }
922 }
923
924 ov2659->pll.ctrl1 = ctrl1_reg;
925 ov2659->pll.ctrl2 = ctrl2_reg;
926 ov2659->pll.ctrl3 = ctrl3_reg;
927
928 dev_dbg(&client->dev,
929 "Actual reg config: ctrl1_reg: %02x ctrl2_reg: %02x ctrl3_reg: %02x\n",
930 ctrl1_reg, ctrl2_reg, ctrl3_reg);
931 }
932
ov2659_set_pixel_clock(struct ov2659 * ov2659)933 static int ov2659_set_pixel_clock(struct ov2659 *ov2659)
934 {
935 struct i2c_client *client = ov2659->client;
936 struct sensor_register pll_regs[] = {
937 {REG_SC_PLL_CTRL1, ov2659->pll.ctrl1},
938 {REG_SC_PLL_CTRL2, ov2659->pll.ctrl2},
939 {REG_SC_PLL_CTRL3, ov2659->pll.ctrl3},
940 {REG_NULL, 0x00},
941 };
942
943 dev_dbg(&client->dev, "%s\n", __func__);
944
945 return ov2659_write_array(client, pll_regs);
946 };
947
ov2659_get_default_format(struct v4l2_mbus_framefmt * format)948 static void ov2659_get_default_format(struct v4l2_mbus_framefmt *format)
949 {
950 format->width = ov2659_framesizes[2].width;
951 format->height = ov2659_framesizes[2].height;
952 format->colorspace = V4L2_COLORSPACE_SRGB;
953 format->code = ov2659_formats[0].code;
954 format->field = V4L2_FIELD_NONE;
955 }
956
ov2659_set_streaming(struct ov2659 * ov2659,int on)957 static void ov2659_set_streaming(struct ov2659 *ov2659, int on)
958 {
959 struct i2c_client *client = ov2659->client;
960 int ret;
961
962 on = !!on;
963
964 dev_dbg(&client->dev, "%s: on: %d\n", __func__, on);
965
966 ret = ov2659_write(client, REG_SOFTWARE_STANDBY, on);
967 if (ret)
968 dev_err(&client->dev, "ov2659 soft standby failed\n");
969 }
970
ov2659_init(struct v4l2_subdev * sd,u32 val)971 static int ov2659_init(struct v4l2_subdev *sd, u32 val)
972 {
973 struct i2c_client *client = v4l2_get_subdevdata(sd);
974
975 return ov2659_write_array(client, ov2659_init_regs);
976 }
977
978 /*
979 * V4L2 subdev video and pad level operations
980 */
981
ov2659_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_mbus_code_enum * code)982 static int ov2659_enum_mbus_code(struct v4l2_subdev *sd,
983 struct v4l2_subdev_state *sd_state,
984 struct v4l2_subdev_mbus_code_enum *code)
985 {
986 struct i2c_client *client = v4l2_get_subdevdata(sd);
987
988 dev_dbg(&client->dev, "%s:\n", __func__);
989
990 if (code->index >= ARRAY_SIZE(ov2659_formats))
991 return -EINVAL;
992
993 code->code = ov2659_formats[code->index].code;
994
995 return 0;
996 }
997
ov2659_enum_frame_sizes(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_frame_size_enum * fse)998 static int ov2659_enum_frame_sizes(struct v4l2_subdev *sd,
999 struct v4l2_subdev_state *sd_state,
1000 struct v4l2_subdev_frame_size_enum *fse)
1001 {
1002 struct i2c_client *client = v4l2_get_subdevdata(sd);
1003 int i = ARRAY_SIZE(ov2659_formats);
1004
1005 dev_dbg(&client->dev, "%s:\n", __func__);
1006
1007 if (fse->index >= ARRAY_SIZE(ov2659_framesizes))
1008 return -EINVAL;
1009
1010 while (--i)
1011 if (fse->code == ov2659_formats[i].code)
1012 break;
1013
1014 fse->code = ov2659_formats[i].code;
1015
1016 fse->min_width = ov2659_framesizes[fse->index].width;
1017 fse->max_width = fse->min_width;
1018 fse->max_height = ov2659_framesizes[fse->index].height;
1019 fse->min_height = fse->max_height;
1020
1021 return 0;
1022 }
1023
ov2659_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1024 static int ov2659_get_fmt(struct v4l2_subdev *sd,
1025 struct v4l2_subdev_state *sd_state,
1026 struct v4l2_subdev_format *fmt)
1027 {
1028 struct i2c_client *client = v4l2_get_subdevdata(sd);
1029 struct ov2659 *ov2659 = to_ov2659(sd);
1030
1031 dev_dbg(&client->dev, "ov2659_get_fmt\n");
1032
1033 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1034 struct v4l2_mbus_framefmt *mf;
1035
1036 mf = v4l2_subdev_state_get_format(sd_state, 0);
1037 mutex_lock(&ov2659->lock);
1038 fmt->format = *mf;
1039 mutex_unlock(&ov2659->lock);
1040 return 0;
1041 }
1042
1043 mutex_lock(&ov2659->lock);
1044 fmt->format = ov2659->format;
1045 mutex_unlock(&ov2659->lock);
1046
1047 dev_dbg(&client->dev, "ov2659_get_fmt: %x %dx%d\n",
1048 ov2659->format.code, ov2659->format.width,
1049 ov2659->format.height);
1050
1051 return 0;
1052 }
1053
__ov2659_try_frame_size(struct v4l2_mbus_framefmt * mf,const struct ov2659_framesize ** size)1054 static void __ov2659_try_frame_size(struct v4l2_mbus_framefmt *mf,
1055 const struct ov2659_framesize **size)
1056 {
1057 const struct ov2659_framesize *fsize = &ov2659_framesizes[0];
1058 const struct ov2659_framesize *match = NULL;
1059 int i = ARRAY_SIZE(ov2659_framesizes);
1060 unsigned int min_err = UINT_MAX;
1061
1062 while (i--) {
1063 int err = abs(fsize->width - mf->width)
1064 + abs(fsize->height - mf->height);
1065 if ((err < min_err) && (fsize->regs[0].addr)) {
1066 min_err = err;
1067 match = fsize;
1068 }
1069 fsize++;
1070 }
1071
1072 if (!match)
1073 match = &ov2659_framesizes[2];
1074
1075 mf->width = match->width;
1076 mf->height = match->height;
1077
1078 if (size)
1079 *size = match;
1080 }
1081
ov2659_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_format * fmt)1082 static int ov2659_set_fmt(struct v4l2_subdev *sd,
1083 struct v4l2_subdev_state *sd_state,
1084 struct v4l2_subdev_format *fmt)
1085 {
1086 struct i2c_client *client = v4l2_get_subdevdata(sd);
1087 int index = ARRAY_SIZE(ov2659_formats);
1088 struct v4l2_mbus_framefmt *mf = &fmt->format;
1089 const struct ov2659_framesize *size = NULL;
1090 struct ov2659 *ov2659 = to_ov2659(sd);
1091 int ret = 0;
1092
1093 dev_dbg(&client->dev, "ov2659_set_fmt\n");
1094
1095 __ov2659_try_frame_size(mf, &size);
1096
1097 while (--index >= 0)
1098 if (ov2659_formats[index].code == mf->code)
1099 break;
1100
1101 if (index < 0) {
1102 index = 0;
1103 mf->code = ov2659_formats[index].code;
1104 }
1105
1106 mf->colorspace = V4L2_COLORSPACE_SRGB;
1107 mf->field = V4L2_FIELD_NONE;
1108
1109 mutex_lock(&ov2659->lock);
1110
1111 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1112 mf = v4l2_subdev_state_get_format(sd_state, fmt->pad);
1113 *mf = fmt->format;
1114 } else {
1115 s64 val;
1116
1117 if (ov2659->streaming) {
1118 mutex_unlock(&ov2659->lock);
1119 return -EBUSY;
1120 }
1121
1122 ov2659->frame_size = size;
1123 ov2659->format = fmt->format;
1124 ov2659->format_ctrl_regs =
1125 ov2659_formats[index].format_ctrl_regs;
1126
1127 if (ov2659->format.code != MEDIA_BUS_FMT_SBGGR8_1X8)
1128 val = ov2659->pdata->link_frequency / 2;
1129 else
1130 val = ov2659->pdata->link_frequency;
1131
1132 ret = v4l2_ctrl_s_ctrl_int64(ov2659->link_frequency, val);
1133 if (ret < 0)
1134 dev_warn(&client->dev,
1135 "failed to set link_frequency rate (%d)\n",
1136 ret);
1137 }
1138
1139 mutex_unlock(&ov2659->lock);
1140 return ret;
1141 }
1142
ov2659_set_frame_size(struct ov2659 * ov2659)1143 static int ov2659_set_frame_size(struct ov2659 *ov2659)
1144 {
1145 struct i2c_client *client = ov2659->client;
1146
1147 dev_dbg(&client->dev, "%s\n", __func__);
1148
1149 return ov2659_write_array(ov2659->client, ov2659->frame_size->regs);
1150 }
1151
ov2659_set_format(struct ov2659 * ov2659)1152 static int ov2659_set_format(struct ov2659 *ov2659)
1153 {
1154 struct i2c_client *client = ov2659->client;
1155
1156 dev_dbg(&client->dev, "%s\n", __func__);
1157
1158 return ov2659_write_array(ov2659->client, ov2659->format_ctrl_regs);
1159 }
1160
ov2659_s_stream(struct v4l2_subdev * sd,int on)1161 static int ov2659_s_stream(struct v4l2_subdev *sd, int on)
1162 {
1163 struct i2c_client *client = v4l2_get_subdevdata(sd);
1164 struct ov2659 *ov2659 = to_ov2659(sd);
1165 int ret = 0;
1166
1167 dev_dbg(&client->dev, "%s: on: %d\n", __func__, on);
1168
1169 mutex_lock(&ov2659->lock);
1170
1171 on = !!on;
1172
1173 if (ov2659->streaming == on)
1174 goto unlock;
1175
1176 if (!on) {
1177 /* Stop Streaming Sequence */
1178 ov2659_set_streaming(ov2659, 0);
1179 ov2659->streaming = on;
1180 pm_runtime_put(&client->dev);
1181 goto unlock;
1182 }
1183
1184 ret = pm_runtime_resume_and_get(&client->dev);
1185 if (ret < 0)
1186 goto unlock;
1187
1188 ret = ov2659_init(sd, 0);
1189 if (!ret)
1190 ret = ov2659_set_pixel_clock(ov2659);
1191 if (!ret)
1192 ret = ov2659_set_frame_size(ov2659);
1193 if (!ret)
1194 ret = ov2659_set_format(ov2659);
1195 if (!ret) {
1196 ov2659_set_streaming(ov2659, 1);
1197 ov2659->streaming = on;
1198 }
1199
1200 unlock:
1201 mutex_unlock(&ov2659->lock);
1202 return ret;
1203 }
1204
ov2659_set_test_pattern(struct ov2659 * ov2659,int value)1205 static int ov2659_set_test_pattern(struct ov2659 *ov2659, int value)
1206 {
1207 struct i2c_client *client = v4l2_get_subdevdata(&ov2659->sd);
1208 int ret;
1209 u8 val;
1210
1211 ret = ov2659_read(client, REG_PRE_ISP_CTRL00, &val);
1212 if (ret < 0)
1213 return ret;
1214
1215 switch (value) {
1216 case 0:
1217 val &= ~TEST_PATTERN_ENABLE;
1218 break;
1219 case 1:
1220 val &= VERTICAL_COLOR_BAR_MASK;
1221 val |= TEST_PATTERN_ENABLE;
1222 break;
1223 }
1224
1225 return ov2659_write(client, REG_PRE_ISP_CTRL00, val);
1226 }
1227
ov2659_s_ctrl(struct v4l2_ctrl * ctrl)1228 static int ov2659_s_ctrl(struct v4l2_ctrl *ctrl)
1229 {
1230 struct ov2659 *ov2659 =
1231 container_of(ctrl->handler, struct ov2659, ctrls);
1232 struct i2c_client *client = ov2659->client;
1233
1234 /* V4L2 controls values will be applied only when power is already up */
1235 if (!pm_runtime_get_if_in_use(&client->dev))
1236 return 0;
1237
1238 switch (ctrl->id) {
1239 case V4L2_CID_TEST_PATTERN:
1240 return ov2659_set_test_pattern(ov2659, ctrl->val);
1241 }
1242
1243 pm_runtime_put(&client->dev);
1244 return 0;
1245 }
1246
1247 static const struct v4l2_ctrl_ops ov2659_ctrl_ops = {
1248 .s_ctrl = ov2659_s_ctrl,
1249 };
1250
1251 static const char * const ov2659_test_pattern_menu[] = {
1252 "Disabled",
1253 "Vertical Color Bars",
1254 };
1255
ov2659_power_off(struct device * dev)1256 static int ov2659_power_off(struct device *dev)
1257 {
1258 struct i2c_client *client = to_i2c_client(dev);
1259 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1260 struct ov2659 *ov2659 = to_ov2659(sd);
1261
1262 dev_dbg(&client->dev, "%s:\n", __func__);
1263
1264 gpiod_set_value(ov2659->pwdn_gpio, 1);
1265
1266 clk_disable_unprepare(ov2659->clk);
1267
1268 return 0;
1269 }
1270
ov2659_power_on(struct device * dev)1271 static int ov2659_power_on(struct device *dev)
1272 {
1273 struct i2c_client *client = to_i2c_client(dev);
1274 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1275 struct ov2659 *ov2659 = to_ov2659(sd);
1276 int ret;
1277
1278 dev_dbg(&client->dev, "%s:\n", __func__);
1279
1280 ret = clk_prepare_enable(ov2659->clk);
1281 if (ret) {
1282 dev_err(&client->dev, "%s: failed to enable clock\n",
1283 __func__);
1284 return ret;
1285 }
1286
1287 gpiod_set_value(ov2659->pwdn_gpio, 0);
1288
1289 if (ov2659->resetb_gpio) {
1290 gpiod_set_value(ov2659->resetb_gpio, 1);
1291 usleep_range(500, 1000);
1292 gpiod_set_value(ov2659->resetb_gpio, 0);
1293 usleep_range(3000, 5000);
1294 }
1295
1296 return 0;
1297 }
1298
1299 /* -----------------------------------------------------------------------------
1300 * V4L2 subdev internal operations
1301 */
1302
ov2659_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)1303 static int ov2659_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1304 {
1305 struct i2c_client *client = v4l2_get_subdevdata(sd);
1306 struct v4l2_mbus_framefmt *format =
1307 v4l2_subdev_state_get_format(fh->state, 0);
1308
1309 dev_dbg(&client->dev, "%s:\n", __func__);
1310
1311 ov2659_get_default_format(format);
1312
1313 return 0;
1314 }
1315
1316 static const struct v4l2_subdev_core_ops ov2659_subdev_core_ops = {
1317 .log_status = v4l2_ctrl_subdev_log_status,
1318 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
1319 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
1320 };
1321
1322 static const struct v4l2_subdev_video_ops ov2659_subdev_video_ops = {
1323 .s_stream = ov2659_s_stream,
1324 };
1325
1326 static const struct v4l2_subdev_pad_ops ov2659_subdev_pad_ops = {
1327 .enum_mbus_code = ov2659_enum_mbus_code,
1328 .enum_frame_size = ov2659_enum_frame_sizes,
1329 .get_fmt = ov2659_get_fmt,
1330 .set_fmt = ov2659_set_fmt,
1331 };
1332
1333 static const struct v4l2_subdev_ops ov2659_subdev_ops = {
1334 .core = &ov2659_subdev_core_ops,
1335 .video = &ov2659_subdev_video_ops,
1336 .pad = &ov2659_subdev_pad_ops,
1337 };
1338
1339 static const struct v4l2_subdev_internal_ops ov2659_subdev_internal_ops = {
1340 .open = ov2659_open,
1341 };
1342
ov2659_detect(struct v4l2_subdev * sd)1343 static int ov2659_detect(struct v4l2_subdev *sd)
1344 {
1345 struct i2c_client *client = v4l2_get_subdevdata(sd);
1346 u8 pid = 0;
1347 u8 ver = 0;
1348 int ret;
1349
1350 dev_dbg(&client->dev, "%s:\n", __func__);
1351
1352 ret = ov2659_write(client, REG_SOFTWARE_RESET, 0x01);
1353 if (ret != 0) {
1354 dev_err(&client->dev, "Sensor soft reset failed\n");
1355 return -ENODEV;
1356 }
1357 usleep_range(1000, 2000);
1358
1359 /* Check sensor revision */
1360 ret = ov2659_read(client, REG_SC_CHIP_ID_H, &pid);
1361 if (!ret)
1362 ret = ov2659_read(client, REG_SC_CHIP_ID_L, &ver);
1363
1364 if (!ret) {
1365 unsigned short id;
1366
1367 id = OV265X_ID(pid, ver);
1368 if (id != OV2659_ID) {
1369 dev_err(&client->dev,
1370 "Sensor detection failed (%04X)\n", id);
1371 ret = -ENODEV;
1372 } else {
1373 dev_info(&client->dev, "Found OV%04X sensor\n", id);
1374 }
1375 }
1376
1377 return ret;
1378 }
1379
1380 static struct ov2659_platform_data *
ov2659_get_pdata(struct i2c_client * client)1381 ov2659_get_pdata(struct i2c_client *client)
1382 {
1383 struct ov2659_platform_data *pdata;
1384 struct v4l2_fwnode_endpoint bus_cfg = { .bus_type = 0 };
1385 struct device_node *endpoint;
1386 int ret;
1387
1388 if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
1389 return client->dev.platform_data;
1390
1391 endpoint = of_graph_get_endpoint_by_regs(client->dev.of_node, 0, -1);
1392 if (!endpoint)
1393 return NULL;
1394
1395 ret = v4l2_fwnode_endpoint_alloc_parse(of_fwnode_handle(endpoint),
1396 &bus_cfg);
1397 if (ret) {
1398 pdata = NULL;
1399 goto done;
1400 }
1401
1402 pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
1403 if (!pdata)
1404 goto done;
1405
1406 if (!bus_cfg.nr_of_link_frequencies) {
1407 dev_err(&client->dev,
1408 "link-frequencies property not found or too many\n");
1409 pdata = NULL;
1410 goto done;
1411 }
1412
1413 pdata->link_frequency = bus_cfg.link_frequencies[0];
1414
1415 done:
1416 v4l2_fwnode_endpoint_free(&bus_cfg);
1417 of_node_put(endpoint);
1418 return pdata;
1419 }
1420
ov2659_probe(struct i2c_client * client)1421 static int ov2659_probe(struct i2c_client *client)
1422 {
1423 const struct ov2659_platform_data *pdata = ov2659_get_pdata(client);
1424 struct v4l2_subdev *sd;
1425 struct ov2659 *ov2659;
1426 int ret;
1427
1428 if (!pdata) {
1429 dev_err(&client->dev, "platform data not specified\n");
1430 return -EINVAL;
1431 }
1432
1433 ov2659 = devm_kzalloc(&client->dev, sizeof(*ov2659), GFP_KERNEL);
1434 if (!ov2659)
1435 return -ENOMEM;
1436
1437 ov2659->pdata = pdata;
1438 ov2659->client = client;
1439
1440 ov2659->clk = devm_clk_get(&client->dev, "xvclk");
1441 if (IS_ERR(ov2659->clk))
1442 return PTR_ERR(ov2659->clk);
1443
1444 ov2659->xvclk_frequency = clk_get_rate(ov2659->clk);
1445 if (ov2659->xvclk_frequency < 6000000 ||
1446 ov2659->xvclk_frequency > 27000000)
1447 return -EINVAL;
1448
1449 /* Optional gpio don't fail if not present */
1450 ov2659->pwdn_gpio = devm_gpiod_get_optional(&client->dev, "powerdown",
1451 GPIOD_OUT_LOW);
1452 if (IS_ERR(ov2659->pwdn_gpio))
1453 return PTR_ERR(ov2659->pwdn_gpio);
1454
1455 /* Optional gpio don't fail if not present */
1456 ov2659->resetb_gpio = devm_gpiod_get_optional(&client->dev, "reset",
1457 GPIOD_OUT_HIGH);
1458 if (IS_ERR(ov2659->resetb_gpio))
1459 return PTR_ERR(ov2659->resetb_gpio);
1460
1461 v4l2_ctrl_handler_init(&ov2659->ctrls, 2);
1462 ov2659->link_frequency =
1463 v4l2_ctrl_new_std(&ov2659->ctrls, &ov2659_ctrl_ops,
1464 V4L2_CID_PIXEL_RATE,
1465 pdata->link_frequency / 2,
1466 pdata->link_frequency, 1,
1467 pdata->link_frequency);
1468 v4l2_ctrl_new_std_menu_items(&ov2659->ctrls, &ov2659_ctrl_ops,
1469 V4L2_CID_TEST_PATTERN,
1470 ARRAY_SIZE(ov2659_test_pattern_menu) - 1,
1471 0, 0, ov2659_test_pattern_menu);
1472 ov2659->sd.ctrl_handler = &ov2659->ctrls;
1473
1474 if (ov2659->ctrls.error) {
1475 dev_err(&client->dev, "%s: control initialization error %d\n",
1476 __func__, ov2659->ctrls.error);
1477 return ov2659->ctrls.error;
1478 }
1479
1480 sd = &ov2659->sd;
1481 client->flags |= I2C_CLIENT_SCCB;
1482
1483 v4l2_i2c_subdev_init(sd, client, &ov2659_subdev_ops);
1484 sd->internal_ops = &ov2659_subdev_internal_ops;
1485 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
1486 V4L2_SUBDEV_FL_HAS_EVENTS;
1487
1488 ov2659->pad.flags = MEDIA_PAD_FL_SOURCE;
1489 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
1490 ret = media_entity_pads_init(&sd->entity, 1, &ov2659->pad);
1491 if (ret < 0) {
1492 v4l2_ctrl_handler_free(&ov2659->ctrls);
1493 return ret;
1494 }
1495
1496 mutex_init(&ov2659->lock);
1497
1498 ov2659_get_default_format(&ov2659->format);
1499 ov2659->frame_size = &ov2659_framesizes[2];
1500 ov2659->format_ctrl_regs = ov2659_formats[0].format_ctrl_regs;
1501
1502 ret = ov2659_power_on(&client->dev);
1503 if (ret < 0)
1504 goto error;
1505
1506 ret = ov2659_detect(sd);
1507 if (ret < 0)
1508 goto error;
1509
1510 /* Calculate the PLL register value needed */
1511 ov2659_pll_calc_params(ov2659);
1512
1513 ret = v4l2_async_register_subdev(&ov2659->sd);
1514 if (ret)
1515 goto error;
1516
1517 dev_info(&client->dev, "%s sensor driver registered !!\n", sd->name);
1518
1519 pm_runtime_set_active(&client->dev);
1520 pm_runtime_enable(&client->dev);
1521 pm_runtime_idle(&client->dev);
1522
1523 return 0;
1524
1525 error:
1526 v4l2_ctrl_handler_free(&ov2659->ctrls);
1527 ov2659_power_off(&client->dev);
1528 media_entity_cleanup(&sd->entity);
1529 mutex_destroy(&ov2659->lock);
1530 return ret;
1531 }
1532
ov2659_remove(struct i2c_client * client)1533 static void ov2659_remove(struct i2c_client *client)
1534 {
1535 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1536 struct ov2659 *ov2659 = to_ov2659(sd);
1537
1538 v4l2_ctrl_handler_free(&ov2659->ctrls);
1539 v4l2_async_unregister_subdev(sd);
1540 media_entity_cleanup(&sd->entity);
1541 mutex_destroy(&ov2659->lock);
1542
1543 pm_runtime_disable(&client->dev);
1544 if (!pm_runtime_status_suspended(&client->dev))
1545 ov2659_power_off(&client->dev);
1546 pm_runtime_set_suspended(&client->dev);
1547 }
1548
1549 static const struct dev_pm_ops ov2659_pm_ops = {
1550 SET_RUNTIME_PM_OPS(ov2659_power_off, ov2659_power_on, NULL)
1551 };
1552
1553 static const struct i2c_device_id ov2659_id[] = {
1554 { "ov2659" },
1555 { /* sentinel */ }
1556 };
1557 MODULE_DEVICE_TABLE(i2c, ov2659_id);
1558
1559 #if IS_ENABLED(CONFIG_OF)
1560 static const struct of_device_id ov2659_of_match[] = {
1561 { .compatible = "ovti,ov2659", },
1562 { /* sentinel */ },
1563 };
1564 MODULE_DEVICE_TABLE(of, ov2659_of_match);
1565 #endif
1566
1567 static struct i2c_driver ov2659_i2c_driver = {
1568 .driver = {
1569 .name = DRIVER_NAME,
1570 .pm = &ov2659_pm_ops,
1571 .of_match_table = of_match_ptr(ov2659_of_match),
1572 },
1573 .probe = ov2659_probe,
1574 .remove = ov2659_remove,
1575 .id_table = ov2659_id,
1576 };
1577
1578 module_i2c_driver(ov2659_i2c_driver);
1579
1580 MODULE_AUTHOR("Benoit Parrot <bparrot@ti.com>");
1581 MODULE_DESCRIPTION("OV2659 CMOS Image Sensor driver");
1582 MODULE_LICENSE("GPL v2");
1583