1 /*
2 * Omnivision OV2659 CMOS Image Sensor driver
3 *
4 * Copyright (C) 2015 Texas Instruments, Inc.
5 *
6 * Benoit Parrot <bparrot@ti.com>
7 * Lad, Prabhakar <prabhakar.csengg@gmail.com>
8 *
9 * This program is free software; you may redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; version 2 of the License.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
14 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
15 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
16 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
17 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
18 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
19 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 #include <linux/clk.h>
24 #include <linux/delay.h>
25 #include <linux/err.h>
26 #include <linux/init.h>
27 #include <linux/interrupt.h>
28 #include <linux/io.h>
29 #include <linux/i2c.h>
30 #include <linux/kernel.h>
31 #include <linux/media.h>
32 #include <linux/module.h>
33 #include <linux/of.h>
34 #include <linux/of_graph.h>
35 #include <linux/slab.h>
36 #include <linux/uaccess.h>
37 #include <linux/videodev2.h>
38
39 #include <media/media-entity.h>
40 #include <media/i2c/ov2659.h>
41 #include <media/v4l2-common.h>
42 #include <media/v4l2-ctrls.h>
43 #include <media/v4l2-device.h>
44 #include <media/v4l2-event.h>
45 #include <media/v4l2-fwnode.h>
46 #include <media/v4l2-image-sizes.h>
47 #include <media/v4l2-mediabus.h>
48 #include <media/v4l2-subdev.h>
49
50 #define DRIVER_NAME "ov2659"
51
52 /*
53 * OV2659 register definitions
54 */
55 #define REG_SOFTWARE_STANDBY 0x0100
56 #define REG_SOFTWARE_RESET 0x0103
57 #define REG_IO_CTRL00 0x3000
58 #define REG_IO_CTRL01 0x3001
59 #define REG_IO_CTRL02 0x3002
60 #define REG_OUTPUT_VALUE00 0x3008
61 #define REG_OUTPUT_VALUE01 0x3009
62 #define REG_OUTPUT_VALUE02 0x300d
63 #define REG_OUTPUT_SELECT00 0x300e
64 #define REG_OUTPUT_SELECT01 0x300f
65 #define REG_OUTPUT_SELECT02 0x3010
66 #define REG_OUTPUT_DRIVE 0x3011
67 #define REG_INPUT_READOUT00 0x302d
68 #define REG_INPUT_READOUT01 0x302e
69 #define REG_INPUT_READOUT02 0x302f
70
71 #define REG_SC_PLL_CTRL0 0x3003
72 #define REG_SC_PLL_CTRL1 0x3004
73 #define REG_SC_PLL_CTRL2 0x3005
74 #define REG_SC_PLL_CTRL3 0x3006
75 #define REG_SC_CHIP_ID_H 0x300a
76 #define REG_SC_CHIP_ID_L 0x300b
77 #define REG_SC_PWC 0x3014
78 #define REG_SC_CLKRST0 0x301a
79 #define REG_SC_CLKRST1 0x301b
80 #define REG_SC_CLKRST2 0x301c
81 #define REG_SC_CLKRST3 0x301d
82 #define REG_SC_SUB_ID 0x302a
83 #define REG_SC_SCCB_ID 0x302b
84
85 #define REG_GROUP_ADDRESS_00 0x3200
86 #define REG_GROUP_ADDRESS_01 0x3201
87 #define REG_GROUP_ADDRESS_02 0x3202
88 #define REG_GROUP_ADDRESS_03 0x3203
89 #define REG_GROUP_ACCESS 0x3208
90
91 #define REG_AWB_R_GAIN_H 0x3400
92 #define REG_AWB_R_GAIN_L 0x3401
93 #define REG_AWB_G_GAIN_H 0x3402
94 #define REG_AWB_G_GAIN_L 0x3403
95 #define REG_AWB_B_GAIN_H 0x3404
96 #define REG_AWB_B_GAIN_L 0x3405
97 #define REG_AWB_MANUAL_CONTROL 0x3406
98
99 #define REG_TIMING_HS_H 0x3800
100 #define REG_TIMING_HS_L 0x3801
101 #define REG_TIMING_VS_H 0x3802
102 #define REG_TIMING_VS_L 0x3803
103 #define REG_TIMING_HW_H 0x3804
104 #define REG_TIMING_HW_L 0x3805
105 #define REG_TIMING_VH_H 0x3806
106 #define REG_TIMING_VH_L 0x3807
107 #define REG_TIMING_DVPHO_H 0x3808
108 #define REG_TIMING_DVPHO_L 0x3809
109 #define REG_TIMING_DVPVO_H 0x380a
110 #define REG_TIMING_DVPVO_L 0x380b
111 #define REG_TIMING_HTS_H 0x380c
112 #define REG_TIMING_HTS_L 0x380d
113 #define REG_TIMING_VTS_H 0x380e
114 #define REG_TIMING_VTS_L 0x380f
115 #define REG_TIMING_HOFFS_H 0x3810
116 #define REG_TIMING_HOFFS_L 0x3811
117 #define REG_TIMING_VOFFS_H 0x3812
118 #define REG_TIMING_VOFFS_L 0x3813
119 #define REG_TIMING_XINC 0x3814
120 #define REG_TIMING_YINC 0x3815
121 #define REG_TIMING_VERT_FORMAT 0x3820
122 #define REG_TIMING_HORIZ_FORMAT 0x3821
123
124 #define REG_FORMAT_CTRL00 0x4300
125
126 #define REG_VFIFO_READ_START_H 0x4608
127 #define REG_VFIFO_READ_START_L 0x4609
128
129 #define REG_DVP_CTRL02 0x4708
130
131 #define REG_ISP_CTRL00 0x5000
132 #define REG_ISP_CTRL01 0x5001
133 #define REG_ISP_CTRL02 0x5002
134
135 #define REG_LENC_RED_X0_H 0x500c
136 #define REG_LENC_RED_X0_L 0x500d
137 #define REG_LENC_RED_Y0_H 0x500e
138 #define REG_LENC_RED_Y0_L 0x500f
139 #define REG_LENC_RED_A1 0x5010
140 #define REG_LENC_RED_B1 0x5011
141 #define REG_LENC_RED_A2_B2 0x5012
142 #define REG_LENC_GREEN_X0_H 0x5013
143 #define REG_LENC_GREEN_X0_L 0x5014
144 #define REG_LENC_GREEN_Y0_H 0x5015
145 #define REG_LENC_GREEN_Y0_L 0x5016
146 #define REG_LENC_GREEN_A1 0x5017
147 #define REG_LENC_GREEN_B1 0x5018
148 #define REG_LENC_GREEN_A2_B2 0x5019
149 #define REG_LENC_BLUE_X0_H 0x501a
150 #define REG_LENC_BLUE_X0_L 0x501b
151 #define REG_LENC_BLUE_Y0_H 0x501c
152 #define REG_LENC_BLUE_Y0_L 0x501d
153 #define REG_LENC_BLUE_A1 0x501e
154 #define REG_LENC_BLUE_B1 0x501f
155 #define REG_LENC_BLUE_A2_B2 0x5020
156
157 #define REG_AWB_CTRL00 0x5035
158 #define REG_AWB_CTRL01 0x5036
159 #define REG_AWB_CTRL02 0x5037
160 #define REG_AWB_CTRL03 0x5038
161 #define REG_AWB_CTRL04 0x5039
162 #define REG_AWB_LOCAL_LIMIT 0x503a
163 #define REG_AWB_CTRL12 0x5049
164 #define REG_AWB_CTRL13 0x504a
165 #define REG_AWB_CTRL14 0x504b
166
167 #define REG_SHARPENMT_THRESH1 0x5064
168 #define REG_SHARPENMT_THRESH2 0x5065
169 #define REG_SHARPENMT_OFFSET1 0x5066
170 #define REG_SHARPENMT_OFFSET2 0x5067
171 #define REG_DENOISE_THRESH1 0x5068
172 #define REG_DENOISE_THRESH2 0x5069
173 #define REG_DENOISE_OFFSET1 0x506a
174 #define REG_DENOISE_OFFSET2 0x506b
175 #define REG_SHARPEN_THRESH1 0x506c
176 #define REG_SHARPEN_THRESH2 0x506d
177 #define REG_CIP_CTRL00 0x506e
178 #define REG_CIP_CTRL01 0x506f
179
180 #define REG_CMX_SIGN 0x5079
181 #define REG_CMX_MISC_CTRL 0x507a
182
183 #define REG_PRE_ISP_CTRL00 0x50a0
184 #define TEST_PATTERN_ENABLE BIT(7)
185 #define VERTICAL_COLOR_BAR_MASK 0x53
186
187 #define REG_NULL 0x0000 /* Array end token */
188
189 #define OV265X_ID(_msb, _lsb) ((_msb) << 8 | (_lsb))
190 #define OV2659_ID 0x2656
191
192 struct sensor_register {
193 u16 addr;
194 u8 value;
195 };
196
197 struct ov2659_framesize {
198 u16 width;
199 u16 height;
200 u16 max_exp_lines;
201 const struct sensor_register *regs;
202 };
203
204 struct ov2659_pll_ctrl {
205 u8 ctrl1;
206 u8 ctrl2;
207 u8 ctrl3;
208 };
209
210 struct ov2659_pixfmt {
211 u32 code;
212 /* Output format Register Value (REG_FORMAT_CTRL00) */
213 struct sensor_register *format_ctrl_regs;
214 };
215
216 struct pll_ctrl_reg {
217 unsigned int div;
218 unsigned char reg;
219 };
220
221 struct ov2659 {
222 struct v4l2_subdev sd;
223 struct media_pad pad;
224 struct v4l2_mbus_framefmt format;
225 unsigned int xvclk_frequency;
226 const struct ov2659_platform_data *pdata;
227 struct mutex lock;
228 struct i2c_client *client;
229 struct v4l2_ctrl_handler ctrls;
230 struct v4l2_ctrl *link_frequency;
231 const struct ov2659_framesize *frame_size;
232 struct sensor_register *format_ctrl_regs;
233 struct ov2659_pll_ctrl pll;
234 int streaming;
235 };
236
237 static const struct sensor_register ov2659_init_regs[] = {
238 { REG_IO_CTRL00, 0x03 },
239 { REG_IO_CTRL01, 0xff },
240 { REG_IO_CTRL02, 0xe0 },
241 { 0x3633, 0x3d },
242 { 0x3620, 0x02 },
243 { 0x3631, 0x11 },
244 { 0x3612, 0x04 },
245 { 0x3630, 0x20 },
246 { 0x4702, 0x02 },
247 { 0x370c, 0x34 },
248 { REG_TIMING_HS_H, 0x00 },
249 { REG_TIMING_HS_L, 0x00 },
250 { REG_TIMING_VS_H, 0x00 },
251 { REG_TIMING_VS_L, 0x00 },
252 { REG_TIMING_HW_H, 0x06 },
253 { REG_TIMING_HW_L, 0x5f },
254 { REG_TIMING_VH_H, 0x04 },
255 { REG_TIMING_VH_L, 0xb7 },
256 { REG_TIMING_DVPHO_H, 0x03 },
257 { REG_TIMING_DVPHO_L, 0x20 },
258 { REG_TIMING_DVPVO_H, 0x02 },
259 { REG_TIMING_DVPVO_L, 0x58 },
260 { REG_TIMING_HTS_H, 0x05 },
261 { REG_TIMING_HTS_L, 0x14 },
262 { REG_TIMING_VTS_H, 0x02 },
263 { REG_TIMING_VTS_L, 0x68 },
264 { REG_TIMING_HOFFS_L, 0x08 },
265 { REG_TIMING_VOFFS_L, 0x02 },
266 { REG_TIMING_XINC, 0x31 },
267 { REG_TIMING_YINC, 0x31 },
268 { 0x3a02, 0x02 },
269 { 0x3a03, 0x68 },
270 { 0x3a08, 0x00 },
271 { 0x3a09, 0x5c },
272 { 0x3a0a, 0x00 },
273 { 0x3a0b, 0x4d },
274 { 0x3a0d, 0x08 },
275 { 0x3a0e, 0x06 },
276 { 0x3a14, 0x02 },
277 { 0x3a15, 0x28 },
278 { REG_DVP_CTRL02, 0x01 },
279 { 0x3623, 0x00 },
280 { 0x3634, 0x76 },
281 { 0x3701, 0x44 },
282 { 0x3702, 0x18 },
283 { 0x3703, 0x24 },
284 { 0x3704, 0x24 },
285 { 0x3705, 0x0c },
286 { REG_TIMING_VERT_FORMAT, 0x81 },
287 { REG_TIMING_HORIZ_FORMAT, 0x01 },
288 { 0x370a, 0x52 },
289 { REG_VFIFO_READ_START_H, 0x00 },
290 { REG_VFIFO_READ_START_L, 0x80 },
291 { REG_FORMAT_CTRL00, 0x30 },
292 { 0x5086, 0x02 },
293 { REG_ISP_CTRL00, 0xfb },
294 { REG_ISP_CTRL01, 0x1f },
295 { REG_ISP_CTRL02, 0x00 },
296 { 0x5025, 0x0e },
297 { 0x5026, 0x18 },
298 { 0x5027, 0x34 },
299 { 0x5028, 0x4c },
300 { 0x5029, 0x62 },
301 { 0x502a, 0x74 },
302 { 0x502b, 0x85 },
303 { 0x502c, 0x92 },
304 { 0x502d, 0x9e },
305 { 0x502e, 0xb2 },
306 { 0x502f, 0xc0 },
307 { 0x5030, 0xcc },
308 { 0x5031, 0xe0 },
309 { 0x5032, 0xee },
310 { 0x5033, 0xf6 },
311 { 0x5034, 0x11 },
312 { 0x5070, 0x1c },
313 { 0x5071, 0x5b },
314 { 0x5072, 0x05 },
315 { 0x5073, 0x20 },
316 { 0x5074, 0x94 },
317 { 0x5075, 0xb4 },
318 { 0x5076, 0xb4 },
319 { 0x5077, 0xaf },
320 { 0x5078, 0x05 },
321 { REG_CMX_SIGN, 0x98 },
322 { REG_CMX_MISC_CTRL, 0x21 },
323 { REG_AWB_CTRL00, 0x6a },
324 { REG_AWB_CTRL01, 0x11 },
325 { REG_AWB_CTRL02, 0x92 },
326 { REG_AWB_CTRL03, 0x21 },
327 { REG_AWB_CTRL04, 0xe1 },
328 { REG_AWB_LOCAL_LIMIT, 0x01 },
329 { 0x503c, 0x05 },
330 { 0x503d, 0x08 },
331 { 0x503e, 0x08 },
332 { 0x503f, 0x64 },
333 { 0x5040, 0x58 },
334 { 0x5041, 0x2a },
335 { 0x5042, 0xc5 },
336 { 0x5043, 0x2e },
337 { 0x5044, 0x3a },
338 { 0x5045, 0x3c },
339 { 0x5046, 0x44 },
340 { 0x5047, 0xf8 },
341 { 0x5048, 0x08 },
342 { REG_AWB_CTRL12, 0x70 },
343 { REG_AWB_CTRL13, 0xf0 },
344 { REG_AWB_CTRL14, 0xf0 },
345 { REG_LENC_RED_X0_H, 0x03 },
346 { REG_LENC_RED_X0_L, 0x20 },
347 { REG_LENC_RED_Y0_H, 0x02 },
348 { REG_LENC_RED_Y0_L, 0x5c },
349 { REG_LENC_RED_A1, 0x48 },
350 { REG_LENC_RED_B1, 0x00 },
351 { REG_LENC_RED_A2_B2, 0x66 },
352 { REG_LENC_GREEN_X0_H, 0x03 },
353 { REG_LENC_GREEN_X0_L, 0x30 },
354 { REG_LENC_GREEN_Y0_H, 0x02 },
355 { REG_LENC_GREEN_Y0_L, 0x7c },
356 { REG_LENC_GREEN_A1, 0x40 },
357 { REG_LENC_GREEN_B1, 0x00 },
358 { REG_LENC_GREEN_A2_B2, 0x66 },
359 { REG_LENC_BLUE_X0_H, 0x03 },
360 { REG_LENC_BLUE_X0_L, 0x10 },
361 { REG_LENC_BLUE_Y0_H, 0x02 },
362 { REG_LENC_BLUE_Y0_L, 0x7c },
363 { REG_LENC_BLUE_A1, 0x3a },
364 { REG_LENC_BLUE_B1, 0x00 },
365 { REG_LENC_BLUE_A2_B2, 0x66 },
366 { REG_CIP_CTRL00, 0x44 },
367 { REG_SHARPENMT_THRESH1, 0x08 },
368 { REG_SHARPENMT_THRESH2, 0x10 },
369 { REG_SHARPENMT_OFFSET1, 0x12 },
370 { REG_SHARPENMT_OFFSET2, 0x02 },
371 { REG_SHARPEN_THRESH1, 0x08 },
372 { REG_SHARPEN_THRESH2, 0x10 },
373 { REG_CIP_CTRL01, 0xa6 },
374 { REG_DENOISE_THRESH1, 0x08 },
375 { REG_DENOISE_THRESH2, 0x10 },
376 { REG_DENOISE_OFFSET1, 0x04 },
377 { REG_DENOISE_OFFSET2, 0x12 },
378 { 0x507e, 0x40 },
379 { 0x507f, 0x20 },
380 { 0x507b, 0x02 },
381 { REG_CMX_MISC_CTRL, 0x01 },
382 { 0x5084, 0x0c },
383 { 0x5085, 0x3e },
384 { 0x5005, 0x80 },
385 { 0x3a0f, 0x30 },
386 { 0x3a10, 0x28 },
387 { 0x3a1b, 0x32 },
388 { 0x3a1e, 0x26 },
389 { 0x3a11, 0x60 },
390 { 0x3a1f, 0x14 },
391 { 0x5060, 0x69 },
392 { 0x5061, 0x7d },
393 { 0x5062, 0x7d },
394 { 0x5063, 0x69 },
395 { REG_NULL, 0x00 },
396 };
397
398 /* 1280X720 720p */
399 static struct sensor_register ov2659_720p[] = {
400 { REG_TIMING_HS_H, 0x00 },
401 { REG_TIMING_HS_L, 0xa0 },
402 { REG_TIMING_VS_H, 0x00 },
403 { REG_TIMING_VS_L, 0xf0 },
404 { REG_TIMING_HW_H, 0x05 },
405 { REG_TIMING_HW_L, 0xbf },
406 { REG_TIMING_VH_H, 0x03 },
407 { REG_TIMING_VH_L, 0xcb },
408 { REG_TIMING_DVPHO_H, 0x05 },
409 { REG_TIMING_DVPHO_L, 0x00 },
410 { REG_TIMING_DVPVO_H, 0x02 },
411 { REG_TIMING_DVPVO_L, 0xd0 },
412 { REG_TIMING_HTS_H, 0x06 },
413 { REG_TIMING_HTS_L, 0x4c },
414 { REG_TIMING_VTS_H, 0x02 },
415 { REG_TIMING_VTS_L, 0xe8 },
416 { REG_TIMING_HOFFS_L, 0x10 },
417 { REG_TIMING_VOFFS_L, 0x06 },
418 { REG_TIMING_XINC, 0x11 },
419 { REG_TIMING_YINC, 0x11 },
420 { REG_TIMING_VERT_FORMAT, 0x80 },
421 { REG_TIMING_HORIZ_FORMAT, 0x00 },
422 { 0x3a03, 0xe8 },
423 { 0x3a09, 0x6f },
424 { 0x3a0b, 0x5d },
425 { 0x3a15, 0x9a },
426 { REG_NULL, 0x00 },
427 };
428
429 /* 1600X1200 UXGA */
430 static struct sensor_register ov2659_uxga[] = {
431 { REG_TIMING_HS_H, 0x00 },
432 { REG_TIMING_HS_L, 0x00 },
433 { REG_TIMING_VS_H, 0x00 },
434 { REG_TIMING_VS_L, 0x00 },
435 { REG_TIMING_HW_H, 0x06 },
436 { REG_TIMING_HW_L, 0x5f },
437 { REG_TIMING_VH_H, 0x04 },
438 { REG_TIMING_VH_L, 0xbb },
439 { REG_TIMING_DVPHO_H, 0x06 },
440 { REG_TIMING_DVPHO_L, 0x40 },
441 { REG_TIMING_DVPVO_H, 0x04 },
442 { REG_TIMING_DVPVO_L, 0xb0 },
443 { REG_TIMING_HTS_H, 0x07 },
444 { REG_TIMING_HTS_L, 0x9f },
445 { REG_TIMING_VTS_H, 0x04 },
446 { REG_TIMING_VTS_L, 0xd0 },
447 { REG_TIMING_HOFFS_L, 0x10 },
448 { REG_TIMING_VOFFS_L, 0x06 },
449 { REG_TIMING_XINC, 0x11 },
450 { REG_TIMING_YINC, 0x11 },
451 { 0x3a02, 0x04 },
452 { 0x3a03, 0xd0 },
453 { 0x3a08, 0x00 },
454 { 0x3a09, 0xb8 },
455 { 0x3a0a, 0x00 },
456 { 0x3a0b, 0x9a },
457 { 0x3a0d, 0x08 },
458 { 0x3a0e, 0x06 },
459 { 0x3a14, 0x04 },
460 { 0x3a15, 0x50 },
461 { 0x3623, 0x00 },
462 { 0x3634, 0x44 },
463 { 0x3701, 0x44 },
464 { 0x3702, 0x30 },
465 { 0x3703, 0x48 },
466 { 0x3704, 0x48 },
467 { 0x3705, 0x18 },
468 { REG_TIMING_VERT_FORMAT, 0x80 },
469 { REG_TIMING_HORIZ_FORMAT, 0x00 },
470 { 0x370a, 0x12 },
471 { REG_VFIFO_READ_START_H, 0x00 },
472 { REG_VFIFO_READ_START_L, 0x80 },
473 { REG_ISP_CTRL02, 0x00 },
474 { REG_NULL, 0x00 },
475 };
476
477 /* 1280X1024 SXGA */
478 static struct sensor_register ov2659_sxga[] = {
479 { REG_TIMING_HS_H, 0x00 },
480 { REG_TIMING_HS_L, 0x00 },
481 { REG_TIMING_VS_H, 0x00 },
482 { REG_TIMING_VS_L, 0x00 },
483 { REG_TIMING_HW_H, 0x06 },
484 { REG_TIMING_HW_L, 0x5f },
485 { REG_TIMING_VH_H, 0x04 },
486 { REG_TIMING_VH_L, 0xb7 },
487 { REG_TIMING_DVPHO_H, 0x05 },
488 { REG_TIMING_DVPHO_L, 0x00 },
489 { REG_TIMING_DVPVO_H, 0x04 },
490 { REG_TIMING_DVPVO_L, 0x00 },
491 { REG_TIMING_HTS_H, 0x07 },
492 { REG_TIMING_HTS_L, 0x9c },
493 { REG_TIMING_VTS_H, 0x04 },
494 { REG_TIMING_VTS_L, 0xd0 },
495 { REG_TIMING_HOFFS_L, 0x10 },
496 { REG_TIMING_VOFFS_L, 0x06 },
497 { REG_TIMING_XINC, 0x11 },
498 { REG_TIMING_YINC, 0x11 },
499 { 0x3a02, 0x02 },
500 { 0x3a03, 0x68 },
501 { 0x3a08, 0x00 },
502 { 0x3a09, 0x5c },
503 { 0x3a0a, 0x00 },
504 { 0x3a0b, 0x4d },
505 { 0x3a0d, 0x08 },
506 { 0x3a0e, 0x06 },
507 { 0x3a14, 0x02 },
508 { 0x3a15, 0x28 },
509 { 0x3623, 0x00 },
510 { 0x3634, 0x76 },
511 { 0x3701, 0x44 },
512 { 0x3702, 0x18 },
513 { 0x3703, 0x24 },
514 { 0x3704, 0x24 },
515 { 0x3705, 0x0c },
516 { REG_TIMING_VERT_FORMAT, 0x80 },
517 { REG_TIMING_HORIZ_FORMAT, 0x00 },
518 { 0x370a, 0x52 },
519 { REG_VFIFO_READ_START_H, 0x00 },
520 { REG_VFIFO_READ_START_L, 0x80 },
521 { REG_ISP_CTRL02, 0x00 },
522 { REG_NULL, 0x00 },
523 };
524
525 /* 1024X768 SXGA */
526 static struct sensor_register ov2659_xga[] = {
527 { REG_TIMING_HS_H, 0x00 },
528 { REG_TIMING_HS_L, 0x00 },
529 { REG_TIMING_VS_H, 0x00 },
530 { REG_TIMING_VS_L, 0x00 },
531 { REG_TIMING_HW_H, 0x06 },
532 { REG_TIMING_HW_L, 0x5f },
533 { REG_TIMING_VH_H, 0x04 },
534 { REG_TIMING_VH_L, 0xb7 },
535 { REG_TIMING_DVPHO_H, 0x04 },
536 { REG_TIMING_DVPHO_L, 0x00 },
537 { REG_TIMING_DVPVO_H, 0x03 },
538 { REG_TIMING_DVPVO_L, 0x00 },
539 { REG_TIMING_HTS_H, 0x07 },
540 { REG_TIMING_HTS_L, 0x9c },
541 { REG_TIMING_VTS_H, 0x04 },
542 { REG_TIMING_VTS_L, 0xd0 },
543 { REG_TIMING_HOFFS_L, 0x10 },
544 { REG_TIMING_VOFFS_L, 0x06 },
545 { REG_TIMING_XINC, 0x11 },
546 { REG_TIMING_YINC, 0x11 },
547 { 0x3a02, 0x02 },
548 { 0x3a03, 0x68 },
549 { 0x3a08, 0x00 },
550 { 0x3a09, 0x5c },
551 { 0x3a0a, 0x00 },
552 { 0x3a0b, 0x4d },
553 { 0x3a0d, 0x08 },
554 { 0x3a0e, 0x06 },
555 { 0x3a14, 0x02 },
556 { 0x3a15, 0x28 },
557 { 0x3623, 0x00 },
558 { 0x3634, 0x76 },
559 { 0x3701, 0x44 },
560 { 0x3702, 0x18 },
561 { 0x3703, 0x24 },
562 { 0x3704, 0x24 },
563 { 0x3705, 0x0c },
564 { REG_TIMING_VERT_FORMAT, 0x80 },
565 { REG_TIMING_HORIZ_FORMAT, 0x00 },
566 { 0x370a, 0x52 },
567 { REG_VFIFO_READ_START_H, 0x00 },
568 { REG_VFIFO_READ_START_L, 0x80 },
569 { REG_ISP_CTRL02, 0x00 },
570 { REG_NULL, 0x00 },
571 };
572
573 /* 800X600 SVGA */
574 static struct sensor_register ov2659_svga[] = {
575 { REG_TIMING_HS_H, 0x00 },
576 { REG_TIMING_HS_L, 0x00 },
577 { REG_TIMING_VS_H, 0x00 },
578 { REG_TIMING_VS_L, 0x00 },
579 { REG_TIMING_HW_H, 0x06 },
580 { REG_TIMING_HW_L, 0x5f },
581 { REG_TIMING_VH_H, 0x04 },
582 { REG_TIMING_VH_L, 0xb7 },
583 { REG_TIMING_DVPHO_H, 0x03 },
584 { REG_TIMING_DVPHO_L, 0x20 },
585 { REG_TIMING_DVPVO_H, 0x02 },
586 { REG_TIMING_DVPVO_L, 0x58 },
587 { REG_TIMING_HTS_H, 0x05 },
588 { REG_TIMING_HTS_L, 0x14 },
589 { REG_TIMING_VTS_H, 0x02 },
590 { REG_TIMING_VTS_L, 0x68 },
591 { REG_TIMING_HOFFS_L, 0x08 },
592 { REG_TIMING_VOFFS_L, 0x02 },
593 { REG_TIMING_XINC, 0x31 },
594 { REG_TIMING_YINC, 0x31 },
595 { 0x3a02, 0x02 },
596 { 0x3a03, 0x68 },
597 { 0x3a08, 0x00 },
598 { 0x3a09, 0x5c },
599 { 0x3a0a, 0x00 },
600 { 0x3a0b, 0x4d },
601 { 0x3a0d, 0x08 },
602 { 0x3a0e, 0x06 },
603 { 0x3a14, 0x02 },
604 { 0x3a15, 0x28 },
605 { 0x3623, 0x00 },
606 { 0x3634, 0x76 },
607 { 0x3701, 0x44 },
608 { 0x3702, 0x18 },
609 { 0x3703, 0x24 },
610 { 0x3704, 0x24 },
611 { 0x3705, 0x0c },
612 { REG_TIMING_VERT_FORMAT, 0x81 },
613 { REG_TIMING_HORIZ_FORMAT, 0x01 },
614 { 0x370a, 0x52 },
615 { REG_VFIFO_READ_START_H, 0x00 },
616 { REG_VFIFO_READ_START_L, 0x80 },
617 { REG_ISP_CTRL02, 0x00 },
618 { REG_NULL, 0x00 },
619 };
620
621 /* 640X480 VGA */
622 static struct sensor_register ov2659_vga[] = {
623 { REG_TIMING_HS_H, 0x00 },
624 { REG_TIMING_HS_L, 0x00 },
625 { REG_TIMING_VS_H, 0x00 },
626 { REG_TIMING_VS_L, 0x00 },
627 { REG_TIMING_HW_H, 0x06 },
628 { REG_TIMING_HW_L, 0x5f },
629 { REG_TIMING_VH_H, 0x04 },
630 { REG_TIMING_VH_L, 0xb7 },
631 { REG_TIMING_DVPHO_H, 0x02 },
632 { REG_TIMING_DVPHO_L, 0x80 },
633 { REG_TIMING_DVPVO_H, 0x01 },
634 { REG_TIMING_DVPVO_L, 0xe0 },
635 { REG_TIMING_HTS_H, 0x05 },
636 { REG_TIMING_HTS_L, 0x14 },
637 { REG_TIMING_VTS_H, 0x02 },
638 { REG_TIMING_VTS_L, 0x68 },
639 { REG_TIMING_HOFFS_L, 0x08 },
640 { REG_TIMING_VOFFS_L, 0x02 },
641 { REG_TIMING_XINC, 0x31 },
642 { REG_TIMING_YINC, 0x31 },
643 { 0x3a02, 0x02 },
644 { 0x3a03, 0x68 },
645 { 0x3a08, 0x00 },
646 { 0x3a09, 0x5c },
647 { 0x3a0a, 0x00 },
648 { 0x3a0b, 0x4d },
649 { 0x3a0d, 0x08 },
650 { 0x3a0e, 0x06 },
651 { 0x3a14, 0x02 },
652 { 0x3a15, 0x28 },
653 { 0x3623, 0x00 },
654 { 0x3634, 0x76 },
655 { 0x3701, 0x44 },
656 { 0x3702, 0x18 },
657 { 0x3703, 0x24 },
658 { 0x3704, 0x24 },
659 { 0x3705, 0x0c },
660 { REG_TIMING_VERT_FORMAT, 0x81 },
661 { REG_TIMING_HORIZ_FORMAT, 0x01 },
662 { 0x370a, 0x52 },
663 { REG_VFIFO_READ_START_H, 0x00 },
664 { REG_VFIFO_READ_START_L, 0x80 },
665 { REG_ISP_CTRL02, 0x10 },
666 { REG_NULL, 0x00 },
667 };
668
669 /* 320X240 QVGA */
670 static struct sensor_register ov2659_qvga[] = {
671 { REG_TIMING_HS_H, 0x00 },
672 { REG_TIMING_HS_L, 0x00 },
673 { REG_TIMING_VS_H, 0x00 },
674 { REG_TIMING_VS_L, 0x00 },
675 { REG_TIMING_HW_H, 0x06 },
676 { REG_TIMING_HW_L, 0x5f },
677 { REG_TIMING_VH_H, 0x04 },
678 { REG_TIMING_VH_L, 0xb7 },
679 { REG_TIMING_DVPHO_H, 0x01 },
680 { REG_TIMING_DVPHO_L, 0x40 },
681 { REG_TIMING_DVPVO_H, 0x00 },
682 { REG_TIMING_DVPVO_L, 0xf0 },
683 { REG_TIMING_HTS_H, 0x05 },
684 { REG_TIMING_HTS_L, 0x14 },
685 { REG_TIMING_VTS_H, 0x02 },
686 { REG_TIMING_VTS_L, 0x68 },
687 { REG_TIMING_HOFFS_L, 0x08 },
688 { REG_TIMING_VOFFS_L, 0x02 },
689 { REG_TIMING_XINC, 0x31 },
690 { REG_TIMING_YINC, 0x31 },
691 { 0x3a02, 0x02 },
692 { 0x3a03, 0x68 },
693 { 0x3a08, 0x00 },
694 { 0x3a09, 0x5c },
695 { 0x3a0a, 0x00 },
696 { 0x3a0b, 0x4d },
697 { 0x3a0d, 0x08 },
698 { 0x3a0e, 0x06 },
699 { 0x3a14, 0x02 },
700 { 0x3a15, 0x28 },
701 { 0x3623, 0x00 },
702 { 0x3634, 0x76 },
703 { 0x3701, 0x44 },
704 { 0x3702, 0x18 },
705 { 0x3703, 0x24 },
706 { 0x3704, 0x24 },
707 { 0x3705, 0x0c },
708 { REG_TIMING_VERT_FORMAT, 0x81 },
709 { REG_TIMING_HORIZ_FORMAT, 0x01 },
710 { 0x370a, 0x52 },
711 { REG_VFIFO_READ_START_H, 0x00 },
712 { REG_VFIFO_READ_START_L, 0x80 },
713 { REG_ISP_CTRL02, 0x10 },
714 { REG_NULL, 0x00 },
715 };
716
717 static const struct pll_ctrl_reg ctrl3[] = {
718 { 1, 0x00 },
719 { 2, 0x02 },
720 { 3, 0x03 },
721 { 4, 0x06 },
722 { 6, 0x0d },
723 { 8, 0x0e },
724 { 12, 0x0f },
725 { 16, 0x12 },
726 { 24, 0x13 },
727 { 32, 0x16 },
728 { 48, 0x1b },
729 { 64, 0x1e },
730 { 96, 0x1f },
731 { 0, 0x00 },
732 };
733
734 static const struct pll_ctrl_reg ctrl1[] = {
735 { 2, 0x10 },
736 { 4, 0x20 },
737 { 6, 0x30 },
738 { 8, 0x40 },
739 { 10, 0x50 },
740 { 12, 0x60 },
741 { 14, 0x70 },
742 { 16, 0x80 },
743 { 18, 0x90 },
744 { 20, 0xa0 },
745 { 22, 0xb0 },
746 { 24, 0xc0 },
747 { 26, 0xd0 },
748 { 28, 0xe0 },
749 { 30, 0xf0 },
750 { 0, 0x00 },
751 };
752
753 static const struct ov2659_framesize ov2659_framesizes[] = {
754 { /* QVGA */
755 .width = 320,
756 .height = 240,
757 .regs = ov2659_qvga,
758 .max_exp_lines = 248,
759 }, { /* VGA */
760 .width = 640,
761 .height = 480,
762 .regs = ov2659_vga,
763 .max_exp_lines = 498,
764 }, { /* SVGA */
765 .width = 800,
766 .height = 600,
767 .regs = ov2659_svga,
768 .max_exp_lines = 498,
769 }, { /* XGA */
770 .width = 1024,
771 .height = 768,
772 .regs = ov2659_xga,
773 .max_exp_lines = 498,
774 }, { /* 720P */
775 .width = 1280,
776 .height = 720,
777 .regs = ov2659_720p,
778 .max_exp_lines = 498,
779 }, { /* SXGA */
780 .width = 1280,
781 .height = 1024,
782 .regs = ov2659_sxga,
783 .max_exp_lines = 1048,
784 }, { /* UXGA */
785 .width = 1600,
786 .height = 1200,
787 .regs = ov2659_uxga,
788 .max_exp_lines = 498,
789 },
790 };
791
792 /* YUV422 YUYV*/
793 static struct sensor_register ov2659_format_yuyv[] = {
794 { REG_FORMAT_CTRL00, 0x30 },
795 { REG_NULL, 0x0 },
796 };
797
798 /* YUV422 UYVY */
799 static struct sensor_register ov2659_format_uyvy[] = {
800 { REG_FORMAT_CTRL00, 0x32 },
801 { REG_NULL, 0x0 },
802 };
803
804 /* Raw Bayer BGGR */
805 static struct sensor_register ov2659_format_bggr[] = {
806 { REG_FORMAT_CTRL00, 0x00 },
807 { REG_NULL, 0x0 },
808 };
809
810 /* RGB565 */
811 static struct sensor_register ov2659_format_rgb565[] = {
812 { REG_FORMAT_CTRL00, 0x60 },
813 { REG_NULL, 0x0 },
814 };
815
816 static const struct ov2659_pixfmt ov2659_formats[] = {
817 {
818 .code = MEDIA_BUS_FMT_YUYV8_2X8,
819 .format_ctrl_regs = ov2659_format_yuyv,
820 }, {
821 .code = MEDIA_BUS_FMT_UYVY8_2X8,
822 .format_ctrl_regs = ov2659_format_uyvy,
823 }, {
824 .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
825 .format_ctrl_regs = ov2659_format_rgb565,
826 }, {
827 .code = MEDIA_BUS_FMT_SBGGR8_1X8,
828 .format_ctrl_regs = ov2659_format_bggr,
829 },
830 };
831
to_ov2659(struct v4l2_subdev * sd)832 static inline struct ov2659 *to_ov2659(struct v4l2_subdev *sd)
833 {
834 return container_of(sd, struct ov2659, sd);
835 }
836
837 /* sensor register write */
ov2659_write(struct i2c_client * client,u16 reg,u8 val)838 static int ov2659_write(struct i2c_client *client, u16 reg, u8 val)
839 {
840 struct i2c_msg msg;
841 u8 buf[3];
842 int ret;
843
844 buf[0] = reg >> 8;
845 buf[1] = reg & 0xFF;
846 buf[2] = val;
847
848 msg.addr = client->addr;
849 msg.flags = client->flags;
850 msg.buf = buf;
851 msg.len = sizeof(buf);
852
853 ret = i2c_transfer(client->adapter, &msg, 1);
854 if (ret >= 0)
855 return 0;
856
857 dev_dbg(&client->dev,
858 "ov2659 write reg(0x%x val:0x%x) failed !\n", reg, val);
859
860 return ret;
861 }
862
863 /* sensor register read */
ov2659_read(struct i2c_client * client,u16 reg,u8 * val)864 static int ov2659_read(struct i2c_client *client, u16 reg, u8 *val)
865 {
866 struct i2c_msg msg[2];
867 u8 buf[2];
868 int ret;
869
870 buf[0] = reg >> 8;
871 buf[1] = reg & 0xFF;
872
873 msg[0].addr = client->addr;
874 msg[0].flags = client->flags;
875 msg[0].buf = buf;
876 msg[0].len = sizeof(buf);
877
878 msg[1].addr = client->addr;
879 msg[1].flags = client->flags | I2C_M_RD;
880 msg[1].buf = buf;
881 msg[1].len = 1;
882
883 ret = i2c_transfer(client->adapter, msg, 2);
884 if (ret >= 0) {
885 *val = buf[0];
886 return 0;
887 }
888
889 dev_dbg(&client->dev,
890 "ov2659 read reg(0x%x val:0x%x) failed !\n", reg, *val);
891
892 return ret;
893 }
894
ov2659_write_array(struct i2c_client * client,const struct sensor_register * regs)895 static int ov2659_write_array(struct i2c_client *client,
896 const struct sensor_register *regs)
897 {
898 int i, ret = 0;
899
900 for (i = 0; ret == 0 && regs[i].addr; i++)
901 ret = ov2659_write(client, regs[i].addr, regs[i].value);
902
903 return ret;
904 }
905
ov2659_pll_calc_params(struct ov2659 * ov2659)906 static void ov2659_pll_calc_params(struct ov2659 *ov2659)
907 {
908 const struct ov2659_platform_data *pdata = ov2659->pdata;
909 u8 ctrl1_reg = 0, ctrl2_reg = 0, ctrl3_reg = 0;
910 struct i2c_client *client = ov2659->client;
911 unsigned int desired = pdata->link_frequency;
912 u32 prediv, postdiv, mult;
913 u32 bestdelta = -1;
914 u32 delta, actual;
915 int i, j;
916
917 for (i = 0; ctrl1[i].div != 0; i++) {
918 postdiv = ctrl1[i].div;
919 for (j = 0; ctrl3[j].div != 0; j++) {
920 prediv = ctrl3[j].div;
921 for (mult = 1; mult <= 63; mult++) {
922 actual = ov2659->xvclk_frequency;
923 actual *= mult;
924 actual /= prediv;
925 actual /= postdiv;
926 delta = actual - desired;
927 delta = abs(delta);
928
929 if ((delta < bestdelta) || (bestdelta == -1)) {
930 bestdelta = delta;
931 ctrl1_reg = ctrl1[i].reg;
932 ctrl2_reg = mult;
933 ctrl3_reg = ctrl3[j].reg;
934 }
935 }
936 }
937 }
938
939 ov2659->pll.ctrl1 = ctrl1_reg;
940 ov2659->pll.ctrl2 = ctrl2_reg;
941 ov2659->pll.ctrl3 = ctrl3_reg;
942
943 dev_dbg(&client->dev,
944 "Actual reg config: ctrl1_reg: %02x ctrl2_reg: %02x ctrl3_reg: %02x\n",
945 ctrl1_reg, ctrl2_reg, ctrl3_reg);
946 }
947
ov2659_set_pixel_clock(struct ov2659 * ov2659)948 static int ov2659_set_pixel_clock(struct ov2659 *ov2659)
949 {
950 struct i2c_client *client = ov2659->client;
951 struct sensor_register pll_regs[] = {
952 {REG_SC_PLL_CTRL1, ov2659->pll.ctrl1},
953 {REG_SC_PLL_CTRL2, ov2659->pll.ctrl2},
954 {REG_SC_PLL_CTRL3, ov2659->pll.ctrl3},
955 {REG_NULL, 0x00},
956 };
957
958 dev_dbg(&client->dev, "%s\n", __func__);
959
960 return ov2659_write_array(client, pll_regs);
961 };
962
ov2659_get_default_format(struct v4l2_mbus_framefmt * format)963 static void ov2659_get_default_format(struct v4l2_mbus_framefmt *format)
964 {
965 format->width = ov2659_framesizes[2].width;
966 format->height = ov2659_framesizes[2].height;
967 format->colorspace = V4L2_COLORSPACE_SRGB;
968 format->code = ov2659_formats[0].code;
969 format->field = V4L2_FIELD_NONE;
970 }
971
ov2659_set_streaming(struct ov2659 * ov2659,int on)972 static void ov2659_set_streaming(struct ov2659 *ov2659, int on)
973 {
974 struct i2c_client *client = ov2659->client;
975 int ret;
976
977 on = !!on;
978
979 dev_dbg(&client->dev, "%s: on: %d\n", __func__, on);
980
981 ret = ov2659_write(client, REG_SOFTWARE_STANDBY, on);
982 if (ret)
983 dev_err(&client->dev, "ov2659 soft standby failed\n");
984 }
985
ov2659_init(struct v4l2_subdev * sd,u32 val)986 static int ov2659_init(struct v4l2_subdev *sd, u32 val)
987 {
988 struct i2c_client *client = v4l2_get_subdevdata(sd);
989
990 return ov2659_write_array(client, ov2659_init_regs);
991 }
992
993 /*
994 * V4L2 subdev video and pad level operations
995 */
996
ov2659_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_mbus_code_enum * code)997 static int ov2659_enum_mbus_code(struct v4l2_subdev *sd,
998 struct v4l2_subdev_pad_config *cfg,
999 struct v4l2_subdev_mbus_code_enum *code)
1000 {
1001 struct i2c_client *client = v4l2_get_subdevdata(sd);
1002
1003 dev_dbg(&client->dev, "%s:\n", __func__);
1004
1005 if (code->index >= ARRAY_SIZE(ov2659_formats))
1006 return -EINVAL;
1007
1008 code->code = ov2659_formats[code->index].code;
1009
1010 return 0;
1011 }
1012
ov2659_enum_frame_sizes(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_frame_size_enum * fse)1013 static int ov2659_enum_frame_sizes(struct v4l2_subdev *sd,
1014 struct v4l2_subdev_pad_config *cfg,
1015 struct v4l2_subdev_frame_size_enum *fse)
1016 {
1017 struct i2c_client *client = v4l2_get_subdevdata(sd);
1018 int i = ARRAY_SIZE(ov2659_formats);
1019
1020 dev_dbg(&client->dev, "%s:\n", __func__);
1021
1022 if (fse->index >= ARRAY_SIZE(ov2659_framesizes))
1023 return -EINVAL;
1024
1025 while (--i)
1026 if (fse->code == ov2659_formats[i].code)
1027 break;
1028
1029 fse->code = ov2659_formats[i].code;
1030
1031 fse->min_width = ov2659_framesizes[fse->index].width;
1032 fse->max_width = fse->min_width;
1033 fse->max_height = ov2659_framesizes[fse->index].height;
1034 fse->min_height = fse->max_height;
1035
1036 return 0;
1037 }
1038
ov2659_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1039 static int ov2659_get_fmt(struct v4l2_subdev *sd,
1040 struct v4l2_subdev_pad_config *cfg,
1041 struct v4l2_subdev_format *fmt)
1042 {
1043 struct i2c_client *client = v4l2_get_subdevdata(sd);
1044 struct ov2659 *ov2659 = to_ov2659(sd);
1045
1046 dev_dbg(&client->dev, "ov2659_get_fmt\n");
1047
1048 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1049 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
1050 struct v4l2_mbus_framefmt *mf;
1051
1052 mf = v4l2_subdev_get_try_format(sd, cfg, 0);
1053 mutex_lock(&ov2659->lock);
1054 fmt->format = *mf;
1055 mutex_unlock(&ov2659->lock);
1056 return 0;
1057 #else
1058 return -ENOTTY;
1059 #endif
1060 }
1061
1062 mutex_lock(&ov2659->lock);
1063 fmt->format = ov2659->format;
1064 mutex_unlock(&ov2659->lock);
1065
1066 dev_dbg(&client->dev, "ov2659_get_fmt: %x %dx%d\n",
1067 ov2659->format.code, ov2659->format.width,
1068 ov2659->format.height);
1069
1070 return 0;
1071 }
1072
__ov2659_try_frame_size(struct v4l2_mbus_framefmt * mf,const struct ov2659_framesize ** size)1073 static void __ov2659_try_frame_size(struct v4l2_mbus_framefmt *mf,
1074 const struct ov2659_framesize **size)
1075 {
1076 const struct ov2659_framesize *fsize = &ov2659_framesizes[0];
1077 const struct ov2659_framesize *match = NULL;
1078 int i = ARRAY_SIZE(ov2659_framesizes);
1079 unsigned int min_err = UINT_MAX;
1080
1081 while (i--) {
1082 int err = abs(fsize->width - mf->width)
1083 + abs(fsize->height - mf->height);
1084 if ((err < min_err) && (fsize->regs[0].addr)) {
1085 min_err = err;
1086 match = fsize;
1087 }
1088 fsize++;
1089 }
1090
1091 if (!match)
1092 match = &ov2659_framesizes[2];
1093
1094 mf->width = match->width;
1095 mf->height = match->height;
1096
1097 if (size)
1098 *size = match;
1099 }
1100
ov2659_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_pad_config * cfg,struct v4l2_subdev_format * fmt)1101 static int ov2659_set_fmt(struct v4l2_subdev *sd,
1102 struct v4l2_subdev_pad_config *cfg,
1103 struct v4l2_subdev_format *fmt)
1104 {
1105 struct i2c_client *client = v4l2_get_subdevdata(sd);
1106 int index = ARRAY_SIZE(ov2659_formats);
1107 struct v4l2_mbus_framefmt *mf = &fmt->format;
1108 const struct ov2659_framesize *size = NULL;
1109 struct ov2659 *ov2659 = to_ov2659(sd);
1110 int ret = 0;
1111
1112 dev_dbg(&client->dev, "ov2659_set_fmt\n");
1113
1114 __ov2659_try_frame_size(mf, &size);
1115
1116 while (--index >= 0)
1117 if (ov2659_formats[index].code == mf->code)
1118 break;
1119
1120 if (index < 0)
1121 return -EINVAL;
1122
1123 mf->colorspace = V4L2_COLORSPACE_SRGB;
1124 mf->field = V4L2_FIELD_NONE;
1125
1126 mutex_lock(&ov2659->lock);
1127
1128 if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
1129 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
1130 mf = v4l2_subdev_get_try_format(sd, cfg, fmt->pad);
1131 *mf = fmt->format;
1132 #else
1133 return -ENOTTY;
1134 #endif
1135 } else {
1136 s64 val;
1137
1138 if (ov2659->streaming) {
1139 mutex_unlock(&ov2659->lock);
1140 return -EBUSY;
1141 }
1142
1143 ov2659->frame_size = size;
1144 ov2659->format = fmt->format;
1145 ov2659->format_ctrl_regs =
1146 ov2659_formats[index].format_ctrl_regs;
1147
1148 if (ov2659->format.code != MEDIA_BUS_FMT_SBGGR8_1X8)
1149 val = ov2659->pdata->link_frequency / 2;
1150 else
1151 val = ov2659->pdata->link_frequency;
1152
1153 ret = v4l2_ctrl_s_ctrl_int64(ov2659->link_frequency, val);
1154 if (ret < 0)
1155 dev_warn(&client->dev,
1156 "failed to set link_frequency rate (%d)\n",
1157 ret);
1158 }
1159
1160 mutex_unlock(&ov2659->lock);
1161 return ret;
1162 }
1163
ov2659_set_frame_size(struct ov2659 * ov2659)1164 static int ov2659_set_frame_size(struct ov2659 *ov2659)
1165 {
1166 struct i2c_client *client = ov2659->client;
1167
1168 dev_dbg(&client->dev, "%s\n", __func__);
1169
1170 return ov2659_write_array(ov2659->client, ov2659->frame_size->regs);
1171 }
1172
ov2659_set_format(struct ov2659 * ov2659)1173 static int ov2659_set_format(struct ov2659 *ov2659)
1174 {
1175 struct i2c_client *client = ov2659->client;
1176
1177 dev_dbg(&client->dev, "%s\n", __func__);
1178
1179 return ov2659_write_array(ov2659->client, ov2659->format_ctrl_regs);
1180 }
1181
ov2659_s_stream(struct v4l2_subdev * sd,int on)1182 static int ov2659_s_stream(struct v4l2_subdev *sd, int on)
1183 {
1184 struct i2c_client *client = v4l2_get_subdevdata(sd);
1185 struct ov2659 *ov2659 = to_ov2659(sd);
1186 int ret = 0;
1187
1188 dev_dbg(&client->dev, "%s: on: %d\n", __func__, on);
1189
1190 mutex_lock(&ov2659->lock);
1191
1192 on = !!on;
1193
1194 if (ov2659->streaming == on)
1195 goto unlock;
1196
1197 if (!on) {
1198 /* Stop Streaming Sequence */
1199 ov2659_set_streaming(ov2659, 0);
1200 ov2659->streaming = on;
1201 goto unlock;
1202 }
1203
1204 ov2659_set_pixel_clock(ov2659);
1205 ov2659_set_frame_size(ov2659);
1206 ov2659_set_format(ov2659);
1207 ov2659_set_streaming(ov2659, 1);
1208 ov2659->streaming = on;
1209
1210 unlock:
1211 mutex_unlock(&ov2659->lock);
1212 return ret;
1213 }
1214
ov2659_set_test_pattern(struct ov2659 * ov2659,int value)1215 static int ov2659_set_test_pattern(struct ov2659 *ov2659, int value)
1216 {
1217 struct i2c_client *client = v4l2_get_subdevdata(&ov2659->sd);
1218 int ret;
1219 u8 val;
1220
1221 ret = ov2659_read(client, REG_PRE_ISP_CTRL00, &val);
1222 if (ret < 0)
1223 return ret;
1224
1225 switch (value) {
1226 case 0:
1227 val &= ~TEST_PATTERN_ENABLE;
1228 break;
1229 case 1:
1230 val &= VERTICAL_COLOR_BAR_MASK;
1231 val |= TEST_PATTERN_ENABLE;
1232 break;
1233 }
1234
1235 return ov2659_write(client, REG_PRE_ISP_CTRL00, val);
1236 }
1237
ov2659_s_ctrl(struct v4l2_ctrl * ctrl)1238 static int ov2659_s_ctrl(struct v4l2_ctrl *ctrl)
1239 {
1240 struct ov2659 *ov2659 =
1241 container_of(ctrl->handler, struct ov2659, ctrls);
1242
1243 switch (ctrl->id) {
1244 case V4L2_CID_TEST_PATTERN:
1245 return ov2659_set_test_pattern(ov2659, ctrl->val);
1246 }
1247
1248 return 0;
1249 }
1250
1251 static const struct v4l2_ctrl_ops ov2659_ctrl_ops = {
1252 .s_ctrl = ov2659_s_ctrl,
1253 };
1254
1255 static const char * const ov2659_test_pattern_menu[] = {
1256 "Disabled",
1257 "Vertical Color Bars",
1258 };
1259
1260 /* -----------------------------------------------------------------------------
1261 * V4L2 subdev internal operations
1262 */
1263
1264 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
ov2659_open(struct v4l2_subdev * sd,struct v4l2_subdev_fh * fh)1265 static int ov2659_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
1266 {
1267 struct i2c_client *client = v4l2_get_subdevdata(sd);
1268 struct v4l2_mbus_framefmt *format =
1269 v4l2_subdev_get_try_format(sd, fh->pad, 0);
1270
1271 dev_dbg(&client->dev, "%s:\n", __func__);
1272
1273 ov2659_get_default_format(format);
1274
1275 return 0;
1276 }
1277 #endif
1278
1279 static const struct v4l2_subdev_core_ops ov2659_subdev_core_ops = {
1280 .log_status = v4l2_ctrl_subdev_log_status,
1281 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,
1282 .unsubscribe_event = v4l2_event_subdev_unsubscribe,
1283 };
1284
1285 static const struct v4l2_subdev_video_ops ov2659_subdev_video_ops = {
1286 .s_stream = ov2659_s_stream,
1287 };
1288
1289 static const struct v4l2_subdev_pad_ops ov2659_subdev_pad_ops = {
1290 .enum_mbus_code = ov2659_enum_mbus_code,
1291 .enum_frame_size = ov2659_enum_frame_sizes,
1292 .get_fmt = ov2659_get_fmt,
1293 .set_fmt = ov2659_set_fmt,
1294 };
1295
1296 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
1297 static const struct v4l2_subdev_ops ov2659_subdev_ops = {
1298 .core = &ov2659_subdev_core_ops,
1299 .video = &ov2659_subdev_video_ops,
1300 .pad = &ov2659_subdev_pad_ops,
1301 };
1302
1303 static const struct v4l2_subdev_internal_ops ov2659_subdev_internal_ops = {
1304 .open = ov2659_open,
1305 };
1306 #endif
1307
ov2659_detect(struct v4l2_subdev * sd)1308 static int ov2659_detect(struct v4l2_subdev *sd)
1309 {
1310 struct i2c_client *client = v4l2_get_subdevdata(sd);
1311 u8 pid = 0;
1312 u8 ver = 0;
1313 int ret;
1314
1315 dev_dbg(&client->dev, "%s:\n", __func__);
1316
1317 ret = ov2659_write(client, REG_SOFTWARE_RESET, 0x01);
1318 if (ret != 0) {
1319 dev_err(&client->dev, "Sensor soft reset failed\n");
1320 return -ENODEV;
1321 }
1322 usleep_range(1000, 2000);
1323
1324 /* Check sensor revision */
1325 ret = ov2659_read(client, REG_SC_CHIP_ID_H, &pid);
1326 if (!ret)
1327 ret = ov2659_read(client, REG_SC_CHIP_ID_L, &ver);
1328
1329 if (!ret) {
1330 unsigned short id;
1331
1332 id = OV265X_ID(pid, ver);
1333 if (id != OV2659_ID)
1334 dev_err(&client->dev,
1335 "Sensor detection failed (%04X, %d)\n",
1336 id, ret);
1337 else {
1338 dev_info(&client->dev, "Found OV%04X sensor\n", id);
1339 ret = ov2659_init(sd, 0);
1340 }
1341 }
1342
1343 return ret;
1344 }
1345
1346 static struct ov2659_platform_data *
ov2659_get_pdata(struct i2c_client * client)1347 ov2659_get_pdata(struct i2c_client *client)
1348 {
1349 struct ov2659_platform_data *pdata;
1350 struct v4l2_fwnode_endpoint *bus_cfg;
1351 struct device_node *endpoint;
1352
1353 if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
1354 return client->dev.platform_data;
1355
1356 endpoint = of_graph_get_next_endpoint(client->dev.of_node, NULL);
1357 if (!endpoint)
1358 return NULL;
1359
1360 bus_cfg = v4l2_fwnode_endpoint_alloc_parse(of_fwnode_handle(endpoint));
1361 if (IS_ERR(bus_cfg)) {
1362 pdata = NULL;
1363 goto done;
1364 }
1365
1366 pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
1367 if (!pdata)
1368 goto done;
1369
1370 if (!bus_cfg->nr_of_link_frequencies) {
1371 dev_err(&client->dev,
1372 "link-frequencies property not found or too many\n");
1373 pdata = NULL;
1374 goto done;
1375 }
1376
1377 pdata->link_frequency = bus_cfg->link_frequencies[0];
1378
1379 done:
1380 v4l2_fwnode_endpoint_free(bus_cfg);
1381 of_node_put(endpoint);
1382 return pdata;
1383 }
1384
ov2659_probe(struct i2c_client * client,const struct i2c_device_id * id)1385 static int ov2659_probe(struct i2c_client *client,
1386 const struct i2c_device_id *id)
1387 {
1388 const struct ov2659_platform_data *pdata = ov2659_get_pdata(client);
1389 struct v4l2_subdev *sd;
1390 struct ov2659 *ov2659;
1391 struct clk *clk;
1392 int ret;
1393
1394 if (!pdata) {
1395 dev_err(&client->dev, "platform data not specified\n");
1396 return -EINVAL;
1397 }
1398
1399 ov2659 = devm_kzalloc(&client->dev, sizeof(*ov2659), GFP_KERNEL);
1400 if (!ov2659)
1401 return -ENOMEM;
1402
1403 ov2659->pdata = pdata;
1404 ov2659->client = client;
1405
1406 clk = devm_clk_get(&client->dev, "xvclk");
1407 if (IS_ERR(clk))
1408 return PTR_ERR(clk);
1409
1410 ov2659->xvclk_frequency = clk_get_rate(clk);
1411 if (ov2659->xvclk_frequency < 6000000 ||
1412 ov2659->xvclk_frequency > 27000000)
1413 return -EINVAL;
1414
1415 v4l2_ctrl_handler_init(&ov2659->ctrls, 2);
1416 ov2659->link_frequency =
1417 v4l2_ctrl_new_std(&ov2659->ctrls, &ov2659_ctrl_ops,
1418 V4L2_CID_PIXEL_RATE,
1419 pdata->link_frequency / 2,
1420 pdata->link_frequency, 1,
1421 pdata->link_frequency);
1422 v4l2_ctrl_new_std_menu_items(&ov2659->ctrls, &ov2659_ctrl_ops,
1423 V4L2_CID_TEST_PATTERN,
1424 ARRAY_SIZE(ov2659_test_pattern_menu) - 1,
1425 0, 0, ov2659_test_pattern_menu);
1426 ov2659->sd.ctrl_handler = &ov2659->ctrls;
1427
1428 if (ov2659->ctrls.error) {
1429 dev_err(&client->dev, "%s: control initialization error %d\n",
1430 __func__, ov2659->ctrls.error);
1431 return ov2659->ctrls.error;
1432 }
1433
1434 sd = &ov2659->sd;
1435 client->flags |= I2C_CLIENT_SCCB;
1436 #ifdef CONFIG_VIDEO_V4L2_SUBDEV_API
1437 v4l2_i2c_subdev_init(sd, client, &ov2659_subdev_ops);
1438
1439 sd->internal_ops = &ov2659_subdev_internal_ops;
1440 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
1441 V4L2_SUBDEV_FL_HAS_EVENTS;
1442 #endif
1443
1444 #if defined(CONFIG_MEDIA_CONTROLLER)
1445 ov2659->pad.flags = MEDIA_PAD_FL_SOURCE;
1446 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
1447 ret = media_entity_pads_init(&sd->entity, 1, &ov2659->pad);
1448 if (ret < 0) {
1449 v4l2_ctrl_handler_free(&ov2659->ctrls);
1450 return ret;
1451 }
1452 #endif
1453
1454 mutex_init(&ov2659->lock);
1455
1456 ov2659_get_default_format(&ov2659->format);
1457 ov2659->frame_size = &ov2659_framesizes[2];
1458 ov2659->format_ctrl_regs = ov2659_formats[0].format_ctrl_regs;
1459
1460 ret = ov2659_detect(sd);
1461 if (ret < 0)
1462 goto error;
1463
1464 /* Calculate the PLL register value needed */
1465 ov2659_pll_calc_params(ov2659);
1466
1467 ret = v4l2_async_register_subdev(&ov2659->sd);
1468 if (ret)
1469 goto error;
1470
1471 dev_info(&client->dev, "%s sensor driver registered !!\n", sd->name);
1472
1473 return 0;
1474
1475 error:
1476 v4l2_ctrl_handler_free(&ov2659->ctrls);
1477 media_entity_cleanup(&sd->entity);
1478 mutex_destroy(&ov2659->lock);
1479 return ret;
1480 }
1481
ov2659_remove(struct i2c_client * client)1482 static int ov2659_remove(struct i2c_client *client)
1483 {
1484 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1485 struct ov2659 *ov2659 = to_ov2659(sd);
1486
1487 v4l2_ctrl_handler_free(&ov2659->ctrls);
1488 v4l2_async_unregister_subdev(sd);
1489 media_entity_cleanup(&sd->entity);
1490 mutex_destroy(&ov2659->lock);
1491
1492 return 0;
1493 }
1494
1495 static const struct i2c_device_id ov2659_id[] = {
1496 { "ov2659", 0 },
1497 { /* sentinel */ },
1498 };
1499 MODULE_DEVICE_TABLE(i2c, ov2659_id);
1500
1501 #if IS_ENABLED(CONFIG_OF)
1502 static const struct of_device_id ov2659_of_match[] = {
1503 { .compatible = "ovti,ov2659", },
1504 { /* sentinel */ },
1505 };
1506 MODULE_DEVICE_TABLE(of, ov2659_of_match);
1507 #endif
1508
1509 static struct i2c_driver ov2659_i2c_driver = {
1510 .driver = {
1511 .name = DRIVER_NAME,
1512 .of_match_table = of_match_ptr(ov2659_of_match),
1513 },
1514 .probe = ov2659_probe,
1515 .remove = ov2659_remove,
1516 .id_table = ov2659_id,
1517 };
1518
1519 module_i2c_driver(ov2659_i2c_driver);
1520
1521 MODULE_AUTHOR("Benoit Parrot <bparrot@ti.com>");
1522 MODULE_DESCRIPTION("OV2659 CMOS Image Sensor driver");
1523 MODULE_LICENSE("GPL v2");
1524
