1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2013 Intel Corporation. All Rights Reserved.
4 *
5 * Adapted from the atomisp-ov5693 driver, with contributions from:
6 *
7 * Daniel Scally
8 * Jean-Michel Hautbois
9 * Fabian Wuthrich
10 * Tsuchiya Yuto
11 * Jordan Hand
12 * Jake Day
13 */
14
15 #include <linux/acpi.h>
16 #include <linux/clk.h>
17 #include <linux/delay.h>
18 #include <linux/device.h>
19 #include <linux/i2c.h>
20 #include <linux/module.h>
21 #include <linux/pm_runtime.h>
22 #include <linux/regulator/consumer.h>
23 #include <linux/slab.h>
24 #include <linux/types.h>
25
26 #include <media/v4l2-cci.h>
27 #include <media/v4l2-ctrls.h>
28 #include <media/v4l2-device.h>
29 #include <media/v4l2-fwnode.h>
30
31 /* System Control */
32 #define OV5693_SW_RESET_REG CCI_REG8(0x0103)
33 #define OV5693_SW_STREAM_REG CCI_REG8(0x0100)
34 #define OV5693_START_STREAMING 0x01
35 #define OV5693_STOP_STREAMING 0x00
36 #define OV5693_SW_RESET 0x01
37
38 #define OV5693_REG_CHIP_ID CCI_REG16(0x300a)
39 /* Yes, this is right. The datasheet for the OV5693 gives its ID as 0x5690 */
40 #define OV5693_CHIP_ID 0x5690
41
42 /* Exposure */
43 #define OV5693_EXPOSURE_CTRL_REG CCI_REG24(0x3500)
44 #define OV5693_EXPOSURE_CTRL_MASK GENMASK(19, 4)
45 #define OV5693_INTEGRATION_TIME_MARGIN 8
46 #define OV5693_EXPOSURE_MIN 1
47 #define OV5693_EXPOSURE_STEP 1
48
49 /* Analogue Gain */
50 #define OV5693_GAIN_CTRL_REG CCI_REG16(0x350a)
51 #define OV5693_GAIN_CTRL_MASK GENMASK(10, 4)
52 #define OV5693_GAIN_MIN 1
53 #define OV5693_GAIN_MAX 127
54 #define OV5693_GAIN_DEF 8
55 #define OV5693_GAIN_STEP 1
56
57 /* Digital Gain */
58 #define OV5693_MWB_RED_GAIN_REG CCI_REG16(0x3400)
59 #define OV5693_MWB_GREEN_GAIN_REG CCI_REG16(0x3402)
60 #define OV5693_MWB_BLUE_GAIN_REG CCI_REG16(0x3404)
61 #define OV5693_MWB_GAIN_MASK GENMASK(11, 0)
62 #define OV5693_MWB_GAIN_MAX 0x0fff
63 #define OV5693_DIGITAL_GAIN_MIN 1
64 #define OV5693_DIGITAL_GAIN_MAX 4095
65 #define OV5693_DIGITAL_GAIN_DEF 1024
66 #define OV5693_DIGITAL_GAIN_STEP 1
67
68 /* Timing and Format */
69 #define OV5693_CROP_START_X_REG CCI_REG16(0x3800)
70 #define OV5693_CROP_START_Y_REG CCI_REG16(0x3802)
71 #define OV5693_CROP_END_X_REG CCI_REG16(0x3804)
72 #define OV5693_CROP_END_Y_REG CCI_REG16(0x3806)
73 #define OV5693_OUTPUT_SIZE_X_REG CCI_REG16(0x3808)
74 #define OV5693_OUTPUT_SIZE_Y_REG CCI_REG16(0x380a)
75
76 #define OV5693_TIMING_HTS_REG CCI_REG16(0x380c)
77 #define OV5693_FIXED_PPL 2688U
78 #define OV5693_TIMING_VTS_REG CCI_REG16(0x380e)
79 #define OV5693_TIMING_MAX_VTS 0xffff
80 #define OV5693_TIMING_MIN_VTS 0x04
81
82 #define OV5693_OFFSET_START_X_REG CCI_REG16(0x3810)
83 #define OV5693_OFFSET_START_Y_REG CCI_REG16(0x3812)
84
85 #define OV5693_SUB_INC_X_REG CCI_REG8(0x3814)
86 #define OV5693_SUB_INC_Y_REG CCI_REG8(0x3815)
87
88 #define OV5693_FORMAT1_REG CCI_REG8(0x3820)
89 #define OV5693_FORMAT1_FLIP_VERT_ISP_EN BIT(6)
90 #define OV5693_FORMAT1_FLIP_VERT_SENSOR_EN BIT(1)
91 #define OV5693_FORMAT1_VBIN_EN BIT(0)
92 #define OV5693_FORMAT2_REG CCI_REG8(0x3821)
93 #define OV5693_FORMAT2_HDR_EN BIT(7)
94 #define OV5693_FORMAT2_FLIP_HORZ_ISP_EN BIT(2)
95 #define OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN BIT(1)
96 #define OV5693_FORMAT2_HBIN_EN BIT(0)
97
98 #define OV5693_ISP_CTRL2_REG CCI_REG8(0x5002)
99 #define OV5693_ISP_SCALE_ENABLE BIT(7)
100
101 /* Pixel Array */
102 #define OV5693_NATIVE_WIDTH 2624
103 #define OV5693_NATIVE_HEIGHT 1956
104 #define OV5693_NATIVE_START_LEFT 0
105 #define OV5693_NATIVE_START_TOP 0
106 #define OV5693_ACTIVE_WIDTH 2592
107 #define OV5693_ACTIVE_HEIGHT 1944
108 #define OV5693_ACTIVE_START_LEFT 16
109 #define OV5693_ACTIVE_START_TOP 6
110 #define OV5693_MIN_CROP_WIDTH 2
111 #define OV5693_MIN_CROP_HEIGHT 2
112
113 /* Test Pattern */
114 #define OV5693_TEST_PATTERN_REG CCI_REG8(0x5e00)
115 #define OV5693_TEST_PATTERN_ENABLE BIT(7)
116 #define OV5693_TEST_PATTERN_ROLLING BIT(6)
117 #define OV5693_TEST_PATTERN_RANDOM 0x01
118 #define OV5693_TEST_PATTERN_BARS 0x00
119
120 /* System Frequencies */
121 #define OV5693_XVCLK_FREQ 19200000
122 #define OV5693_LINK_FREQ_419_2MHZ 419200000
123 #define OV5693_PIXEL_RATE 167680000
124
125 #define to_ov5693_sensor(x) container_of(x, struct ov5693_device, sd)
126
127 static const char * const ov5693_supply_names[] = {
128 "avdd", /* Analog power */
129 "dovdd", /* Digital I/O power */
130 "dvdd", /* Digital circuit power */
131 };
132
133 #define OV5693_NUM_SUPPLIES ARRAY_SIZE(ov5693_supply_names)
134
135 struct ov5693_device {
136 struct device *dev;
137 struct regmap *regmap;
138
139 /* Protect against concurrent changes to controls */
140 struct mutex lock;
141
142 struct gpio_desc *reset;
143 struct gpio_desc *powerdown;
144 struct gpio_desc *privacy_led;
145 struct regulator_bulk_data supplies[OV5693_NUM_SUPPLIES];
146 struct clk *xvclk;
147
148 struct ov5693_mode {
149 struct v4l2_rect crop;
150 struct v4l2_mbus_framefmt format;
151 bool binning_x;
152 bool binning_y;
153 unsigned int inc_x_odd;
154 unsigned int inc_y_odd;
155 unsigned int vts;
156 } mode;
157
158 struct v4l2_subdev sd;
159 struct media_pad pad;
160
161 struct ov5693_v4l2_ctrls {
162 struct v4l2_ctrl_handler handler;
163 struct v4l2_ctrl *link_freq;
164 struct v4l2_ctrl *pixel_rate;
165 struct v4l2_ctrl *exposure;
166 struct v4l2_ctrl *analogue_gain;
167 struct v4l2_ctrl *digital_gain;
168 struct v4l2_ctrl *hflip;
169 struct v4l2_ctrl *vflip;
170 struct v4l2_ctrl *hblank;
171 struct v4l2_ctrl *vblank;
172 struct v4l2_ctrl *test_pattern;
173 } ctrls;
174 };
175
176 static const struct cci_reg_sequence ov5693_global_regs[] = {
177 {CCI_REG8(0x3016), 0xf0},
178 {CCI_REG8(0x3017), 0xf0},
179 {CCI_REG8(0x3018), 0xf0},
180 {CCI_REG8(0x3022), 0x01},
181 {CCI_REG8(0x3028), 0x44},
182 {CCI_REG8(0x3098), 0x02},
183 {CCI_REG8(0x3099), 0x19},
184 {CCI_REG8(0x309a), 0x02},
185 {CCI_REG8(0x309b), 0x01},
186 {CCI_REG8(0x309c), 0x00},
187 {CCI_REG8(0x30a0), 0xd2},
188 {CCI_REG8(0x30a2), 0x01},
189 {CCI_REG8(0x30b2), 0x00},
190 {CCI_REG8(0x30b3), 0x83},
191 {CCI_REG8(0x30b4), 0x03},
192 {CCI_REG8(0x30b5), 0x04},
193 {CCI_REG8(0x30b6), 0x01},
194 {CCI_REG8(0x3080), 0x01},
195 {CCI_REG8(0x3104), 0x21},
196 {CCI_REG8(0x3106), 0x00},
197 {CCI_REG8(0x3406), 0x01},
198 {CCI_REG8(0x3503), 0x07},
199 {CCI_REG8(0x350b), 0x40},
200 {CCI_REG8(0x3601), 0x0a},
201 {CCI_REG8(0x3602), 0x38},
202 {CCI_REG8(0x3612), 0x80},
203 {CCI_REG8(0x3620), 0x54},
204 {CCI_REG8(0x3621), 0xc7},
205 {CCI_REG8(0x3622), 0x0f},
206 {CCI_REG8(0x3625), 0x10},
207 {CCI_REG8(0x3630), 0x55},
208 {CCI_REG8(0x3631), 0xf4},
209 {CCI_REG8(0x3632), 0x00},
210 {CCI_REG8(0x3633), 0x34},
211 {CCI_REG8(0x3634), 0x02},
212 {CCI_REG8(0x364d), 0x0d},
213 {CCI_REG8(0x364f), 0xdd},
214 {CCI_REG8(0x3660), 0x04},
215 {CCI_REG8(0x3662), 0x10},
216 {CCI_REG8(0x3663), 0xf1},
217 {CCI_REG8(0x3665), 0x00},
218 {CCI_REG8(0x3666), 0x20},
219 {CCI_REG8(0x3667), 0x00},
220 {CCI_REG8(0x366a), 0x80},
221 {CCI_REG8(0x3680), 0xe0},
222 {CCI_REG8(0x3681), 0x00},
223 {CCI_REG8(0x3700), 0x42},
224 {CCI_REG8(0x3701), 0x14},
225 {CCI_REG8(0x3702), 0xa0},
226 {CCI_REG8(0x3703), 0xd8},
227 {CCI_REG8(0x3704), 0x78},
228 {CCI_REG8(0x3705), 0x02},
229 {CCI_REG8(0x370a), 0x00},
230 {CCI_REG8(0x370b), 0x20},
231 {CCI_REG8(0x370c), 0x0c},
232 {CCI_REG8(0x370d), 0x11},
233 {CCI_REG8(0x370e), 0x00},
234 {CCI_REG8(0x370f), 0x40},
235 {CCI_REG8(0x3710), 0x00},
236 {CCI_REG8(0x371a), 0x1c},
237 {CCI_REG8(0x371b), 0x05},
238 {CCI_REG8(0x371c), 0x01},
239 {CCI_REG8(0x371e), 0xa1},
240 {CCI_REG8(0x371f), 0x0c},
241 {CCI_REG8(0x3721), 0x00},
242 {CCI_REG8(0x3724), 0x10},
243 {CCI_REG8(0x3726), 0x00},
244 {CCI_REG8(0x372a), 0x01},
245 {CCI_REG8(0x3730), 0x10},
246 {CCI_REG8(0x3738), 0x22},
247 {CCI_REG8(0x3739), 0xe5},
248 {CCI_REG8(0x373a), 0x50},
249 {CCI_REG8(0x373b), 0x02},
250 {CCI_REG8(0x373c), 0x41},
251 {CCI_REG8(0x373f), 0x02},
252 {CCI_REG8(0x3740), 0x42},
253 {CCI_REG8(0x3741), 0x02},
254 {CCI_REG8(0x3742), 0x18},
255 {CCI_REG8(0x3743), 0x01},
256 {CCI_REG8(0x3744), 0x02},
257 {CCI_REG8(0x3747), 0x10},
258 {CCI_REG8(0x374c), 0x04},
259 {CCI_REG8(0x3751), 0xf0},
260 {CCI_REG8(0x3752), 0x00},
261 {CCI_REG8(0x3753), 0x00},
262 {CCI_REG8(0x3754), 0xc0},
263 {CCI_REG8(0x3755), 0x00},
264 {CCI_REG8(0x3756), 0x1a},
265 {CCI_REG8(0x3758), 0x00},
266 {CCI_REG8(0x3759), 0x0f},
267 {CCI_REG8(0x376b), 0x44},
268 {CCI_REG8(0x375c), 0x04},
269 {CCI_REG8(0x3774), 0x10},
270 {CCI_REG8(0x3776), 0x00},
271 {CCI_REG8(0x377f), 0x08},
272 {CCI_REG8(0x3780), 0x22},
273 {CCI_REG8(0x3781), 0x0c},
274 {CCI_REG8(0x3784), 0x2c},
275 {CCI_REG8(0x3785), 0x1e},
276 {CCI_REG8(0x378f), 0xf5},
277 {CCI_REG8(0x3791), 0xb0},
278 {CCI_REG8(0x3795), 0x00},
279 {CCI_REG8(0x3796), 0x64},
280 {CCI_REG8(0x3797), 0x11},
281 {CCI_REG8(0x3798), 0x30},
282 {CCI_REG8(0x3799), 0x41},
283 {CCI_REG8(0x379a), 0x07},
284 {CCI_REG8(0x379b), 0xb0},
285 {CCI_REG8(0x379c), 0x0c},
286 {CCI_REG8(0x3a04), 0x06},
287 {CCI_REG8(0x3a05), 0x14},
288 {CCI_REG8(0x3e07), 0x20},
289 {CCI_REG8(0x4000), 0x08},
290 {CCI_REG8(0x4001), 0x04},
291 {CCI_REG8(0x4004), 0x08},
292 {CCI_REG8(0x4006), 0x20},
293 {CCI_REG8(0x4008), 0x24},
294 {CCI_REG8(0x4009), 0x10},
295 {CCI_REG8(0x4058), 0x00},
296 {CCI_REG8(0x4101), 0xb2},
297 {CCI_REG8(0x4307), 0x31},
298 {CCI_REG8(0x4511), 0x05},
299 {CCI_REG8(0x4512), 0x01},
300 {CCI_REG8(0x481f), 0x30},
301 {CCI_REG8(0x4826), 0x2c},
302 {CCI_REG8(0x4d02), 0xfd},
303 {CCI_REG8(0x4d03), 0xf5},
304 {CCI_REG8(0x4d04), 0x0c},
305 {CCI_REG8(0x4d05), 0xcc},
306 {CCI_REG8(0x4837), 0x0a},
307 {CCI_REG8(0x5003), 0x20},
308 {CCI_REG8(0x5013), 0x00},
309 {CCI_REG8(0x5842), 0x01},
310 {CCI_REG8(0x5843), 0x2b},
311 {CCI_REG8(0x5844), 0x01},
312 {CCI_REG8(0x5845), 0x92},
313 {CCI_REG8(0x5846), 0x01},
314 {CCI_REG8(0x5847), 0x8f},
315 {CCI_REG8(0x5848), 0x01},
316 {CCI_REG8(0x5849), 0x0c},
317 {CCI_REG8(0x5e10), 0x0c},
318 {CCI_REG8(0x3820), 0x00},
319 {CCI_REG8(0x3821), 0x1e},
320 {CCI_REG8(0x5041), 0x14}
321 };
322
323 static const struct v4l2_rect ov5693_default_crop = {
324 .left = OV5693_ACTIVE_START_LEFT,
325 .top = OV5693_ACTIVE_START_TOP,
326 .width = OV5693_ACTIVE_WIDTH,
327 .height = OV5693_ACTIVE_HEIGHT,
328 };
329
330 static const struct v4l2_mbus_framefmt ov5693_default_fmt = {
331 .width = OV5693_ACTIVE_WIDTH,
332 .height = OV5693_ACTIVE_HEIGHT,
333 .code = MEDIA_BUS_FMT_SBGGR10_1X10,
334 };
335
336 static const s64 link_freq_menu_items[] = {
337 OV5693_LINK_FREQ_419_2MHZ
338 };
339
340 static const char * const ov5693_test_pattern_menu[] = {
341 "Disabled",
342 "Random Data",
343 "Colour Bars",
344 "Colour Bars with Rolling Bar"
345 };
346
347 static const u8 ov5693_test_pattern_bits[] = {
348 0,
349 OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_RANDOM,
350 OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS,
351 OV5693_TEST_PATTERN_ENABLE | OV5693_TEST_PATTERN_BARS |
352 OV5693_TEST_PATTERN_ROLLING,
353 };
354
355 /* V4L2 Controls Functions */
356
ov5693_flip_vert_configure(struct ov5693_device * ov5693,bool enable)357 static int ov5693_flip_vert_configure(struct ov5693_device *ov5693,
358 bool enable)
359 {
360 u8 bits = OV5693_FORMAT1_FLIP_VERT_ISP_EN |
361 OV5693_FORMAT1_FLIP_VERT_SENSOR_EN;
362 int ret;
363
364 ret = cci_update_bits(ov5693->regmap, OV5693_FORMAT1_REG, bits,
365 enable ? bits : 0, NULL);
366 if (ret)
367 return ret;
368
369 return 0;
370 }
371
ov5693_flip_horz_configure(struct ov5693_device * ov5693,bool enable)372 static int ov5693_flip_horz_configure(struct ov5693_device *ov5693,
373 bool enable)
374 {
375 u8 bits = OV5693_FORMAT2_FLIP_HORZ_ISP_EN |
376 OV5693_FORMAT2_FLIP_HORZ_SENSOR_EN;
377 int ret;
378
379 ret = cci_update_bits(ov5693->regmap, OV5693_FORMAT2_REG, bits,
380 enable ? bits : 0, NULL);
381 if (ret)
382 return ret;
383
384 return 0;
385 }
386
ov5693_get_exposure(struct ov5693_device * ov5693,s32 * value)387 static int ov5693_get_exposure(struct ov5693_device *ov5693, s32 *value)
388 {
389 u64 exposure;
390 int ret;
391
392 ret = cci_read(ov5693->regmap, OV5693_EXPOSURE_CTRL_REG, &exposure,
393 NULL);
394 if (ret)
395 return ret;
396
397 /* The lowest 4 bits are unsupported fractional bits */
398 *value = exposure >> 4;
399
400 return 0;
401 }
402
ov5693_exposure_configure(struct ov5693_device * ov5693,u32 exposure)403 static int ov5693_exposure_configure(struct ov5693_device *ov5693,
404 u32 exposure)
405 {
406 int ret = 0;
407
408 exposure = (exposure << 4) & OV5693_EXPOSURE_CTRL_MASK;
409
410 cci_write(ov5693->regmap, OV5693_EXPOSURE_CTRL_REG, exposure, &ret);
411
412 return ret;
413 }
414
ov5693_get_gain(struct ov5693_device * ov5693,u32 * gain)415 static int ov5693_get_gain(struct ov5693_device *ov5693, u32 *gain)
416 {
417 u64 value;
418 int ret;
419
420 ret = cci_read(ov5693->regmap, OV5693_GAIN_CTRL_REG, &value, NULL);
421 if (ret)
422 return ret;
423
424 /* As with exposure, the lowest 4 bits are fractional bits. */
425 *gain = value >> 4;
426
427 return ret;
428 }
429
ov5693_digital_gain_configure(struct ov5693_device * ov5693,u32 gain)430 static int ov5693_digital_gain_configure(struct ov5693_device *ov5693,
431 u32 gain)
432 {
433 int ret = 0;
434
435 gain &= OV5693_MWB_GAIN_MASK;
436
437 cci_write(ov5693->regmap, OV5693_MWB_RED_GAIN_REG, gain, &ret);
438 cci_write(ov5693->regmap, OV5693_MWB_GREEN_GAIN_REG, gain, &ret);
439 cci_write(ov5693->regmap, OV5693_MWB_BLUE_GAIN_REG, gain, &ret);
440
441 return ret;
442 }
443
ov5693_analog_gain_configure(struct ov5693_device * ov5693,u32 gain)444 static int ov5693_analog_gain_configure(struct ov5693_device *ov5693, u32 gain)
445 {
446 int ret = 0;
447
448 gain = (gain << 4) & OV5693_GAIN_CTRL_MASK;
449
450 cci_write(ov5693->regmap, OV5693_GAIN_CTRL_REG, gain, &ret);
451
452 return ret;
453 }
454
ov5693_vts_configure(struct ov5693_device * ov5693,u32 vblank)455 static int ov5693_vts_configure(struct ov5693_device *ov5693, u32 vblank)
456 {
457 u16 vts = ov5693->mode.format.height + vblank;
458 int ret = 0;
459
460 cci_write(ov5693->regmap, OV5693_TIMING_VTS_REG, vts, &ret);
461
462 return ret;
463 }
464
ov5693_test_pattern_configure(struct ov5693_device * ov5693,u32 idx)465 static int ov5693_test_pattern_configure(struct ov5693_device *ov5693, u32 idx)
466 {
467 int ret = 0;
468
469 cci_write(ov5693->regmap, OV5693_TEST_PATTERN_REG,
470 ov5693_test_pattern_bits[idx], &ret);
471
472 return ret;
473 }
474
ov5693_s_ctrl(struct v4l2_ctrl * ctrl)475 static int ov5693_s_ctrl(struct v4l2_ctrl *ctrl)
476 {
477 struct ov5693_device *ov5693 =
478 container_of(ctrl->handler, struct ov5693_device, ctrls.handler);
479 int ret = 0;
480
481 /* If VBLANK is altered we need to update exposure to compensate */
482 if (ctrl->id == V4L2_CID_VBLANK) {
483 int exposure_max;
484
485 exposure_max = ov5693->mode.format.height + ctrl->val -
486 OV5693_INTEGRATION_TIME_MARGIN;
487 __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
488 ov5693->ctrls.exposure->minimum,
489 exposure_max,
490 ov5693->ctrls.exposure->step,
491 min(ov5693->ctrls.exposure->val,
492 exposure_max));
493 }
494
495 /* Only apply changes to the controls if the device is powered up */
496 if (!pm_runtime_get_if_in_use(ov5693->dev))
497 return 0;
498
499 switch (ctrl->id) {
500 case V4L2_CID_EXPOSURE:
501 ret = ov5693_exposure_configure(ov5693, ctrl->val);
502 break;
503 case V4L2_CID_ANALOGUE_GAIN:
504 ret = ov5693_analog_gain_configure(ov5693, ctrl->val);
505 break;
506 case V4L2_CID_DIGITAL_GAIN:
507 ret = ov5693_digital_gain_configure(ov5693, ctrl->val);
508 break;
509 case V4L2_CID_HFLIP:
510 ret = ov5693_flip_horz_configure(ov5693, !!ctrl->val);
511 break;
512 case V4L2_CID_VFLIP:
513 ret = ov5693_flip_vert_configure(ov5693, !!ctrl->val);
514 break;
515 case V4L2_CID_VBLANK:
516 ret = ov5693_vts_configure(ov5693, ctrl->val);
517 break;
518 case V4L2_CID_TEST_PATTERN:
519 ret = ov5693_test_pattern_configure(ov5693, ctrl->val);
520 break;
521 default:
522 ret = -EINVAL;
523 }
524
525 pm_runtime_put(ov5693->dev);
526
527 return ret;
528 }
529
ov5693_g_volatile_ctrl(struct v4l2_ctrl * ctrl)530 static int ov5693_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
531 {
532 struct ov5693_device *ov5693 = container_of(ctrl->handler,
533 struct ov5693_device,
534 ctrls.handler);
535
536 switch (ctrl->id) {
537 case V4L2_CID_EXPOSURE_ABSOLUTE:
538 return ov5693_get_exposure(ov5693, &ctrl->val);
539 case V4L2_CID_AUTOGAIN:
540 return ov5693_get_gain(ov5693, &ctrl->val);
541 default:
542 return -EINVAL;
543 }
544 }
545
546 static const struct v4l2_ctrl_ops ov5693_ctrl_ops = {
547 .s_ctrl = ov5693_s_ctrl,
548 .g_volatile_ctrl = ov5693_g_volatile_ctrl
549 };
550
551 /* System Control Functions */
552
ov5693_mode_configure(struct ov5693_device * ov5693)553 static int ov5693_mode_configure(struct ov5693_device *ov5693)
554 {
555 const struct ov5693_mode *mode = &ov5693->mode;
556 int ret = 0;
557
558 /* Crop Start X */
559 cci_write(ov5693->regmap, OV5693_CROP_START_X_REG, mode->crop.left,
560 &ret);
561
562 /* Offset X */
563 cci_write(ov5693->regmap, OV5693_OFFSET_START_X_REG, 0, &ret);
564
565 /* Output Size X */
566 cci_write(ov5693->regmap, OV5693_OUTPUT_SIZE_X_REG, mode->format.width,
567 &ret);
568
569 /* Crop End X */
570 cci_write(ov5693->regmap, OV5693_CROP_END_X_REG,
571 mode->crop.left + mode->crop.width, &ret);
572
573 /* Horizontal Total Size */
574 cci_write(ov5693->regmap, OV5693_TIMING_HTS_REG, OV5693_FIXED_PPL,
575 &ret);
576
577 /* Crop Start Y */
578 cci_write(ov5693->regmap, OV5693_CROP_START_Y_REG, mode->crop.top,
579 &ret);
580
581 /* Offset Y */
582 cci_write(ov5693->regmap, OV5693_OFFSET_START_Y_REG, 0, &ret);
583
584 /* Output Size Y */
585 cci_write(ov5693->regmap, OV5693_OUTPUT_SIZE_Y_REG, mode->format.height,
586 &ret);
587
588 /* Crop End Y */
589 cci_write(ov5693->regmap, OV5693_CROP_END_Y_REG,
590 mode->crop.top + mode->crop.height, &ret);
591
592 /* Subsample X increase */
593 cci_write(ov5693->regmap, OV5693_SUB_INC_X_REG,
594 ((mode->inc_x_odd << 4) & 0xf0) | 0x01, &ret);
595 /* Subsample Y increase */
596 cci_write(ov5693->regmap, OV5693_SUB_INC_Y_REG,
597 ((mode->inc_y_odd << 4) & 0xf0) | 0x01, &ret);
598
599 /* Binning */
600 cci_update_bits(ov5693->regmap, OV5693_FORMAT1_REG,
601 OV5693_FORMAT1_VBIN_EN,
602 mode->binning_y ? OV5693_FORMAT1_VBIN_EN : 0, &ret);
603
604 cci_update_bits(ov5693->regmap, OV5693_FORMAT2_REG,
605 OV5693_FORMAT2_HBIN_EN,
606 mode->binning_x ? OV5693_FORMAT2_HBIN_EN : 0, &ret);
607
608 return ret;
609 }
610
ov5693_enable_streaming(struct ov5693_device * ov5693,bool enable)611 static int ov5693_enable_streaming(struct ov5693_device *ov5693, bool enable)
612 {
613 int ret = 0;
614
615 cci_write(ov5693->regmap, OV5693_SW_STREAM_REG,
616 enable ? OV5693_START_STREAMING : OV5693_STOP_STREAMING,
617 &ret);
618
619 return ret;
620 }
621
ov5693_sw_reset(struct ov5693_device * ov5693)622 static int ov5693_sw_reset(struct ov5693_device *ov5693)
623 {
624 int ret = 0;
625
626 cci_write(ov5693->regmap, OV5693_SW_RESET_REG, OV5693_SW_RESET, &ret);
627
628 return ret;
629 }
630
ov5693_sensor_init(struct ov5693_device * ov5693)631 static int ov5693_sensor_init(struct ov5693_device *ov5693)
632 {
633 int ret;
634
635 ret = ov5693_sw_reset(ov5693);
636 if (ret)
637 return dev_err_probe(ov5693->dev, ret,
638 "software reset error\n");
639
640 ret = cci_multi_reg_write(ov5693->regmap, ov5693_global_regs,
641 ARRAY_SIZE(ov5693_global_regs), NULL);
642 if (ret)
643 return dev_err_probe(ov5693->dev, ret,
644 "global settings error\n");
645
646 ret = ov5693_mode_configure(ov5693);
647 if (ret)
648 return dev_err_probe(ov5693->dev, ret,
649 "mode configure error\n");
650
651 ret = ov5693_enable_streaming(ov5693, false);
652 if (ret)
653 dev_err(ov5693->dev, "stop streaming error\n");
654
655 return ret;
656 }
657
ov5693_sensor_powerdown(struct ov5693_device * ov5693)658 static void ov5693_sensor_powerdown(struct ov5693_device *ov5693)
659 {
660 gpiod_set_value_cansleep(ov5693->privacy_led, 0);
661 gpiod_set_value_cansleep(ov5693->reset, 1);
662 gpiod_set_value_cansleep(ov5693->powerdown, 1);
663
664 regulator_bulk_disable(OV5693_NUM_SUPPLIES, ov5693->supplies);
665
666 clk_disable_unprepare(ov5693->xvclk);
667 }
668
ov5693_sensor_powerup(struct ov5693_device * ov5693)669 static int ov5693_sensor_powerup(struct ov5693_device *ov5693)
670 {
671 int ret;
672
673 gpiod_set_value_cansleep(ov5693->reset, 1);
674 gpiod_set_value_cansleep(ov5693->powerdown, 1);
675
676 ret = clk_prepare_enable(ov5693->xvclk);
677 if (ret) {
678 dev_err(ov5693->dev, "Failed to enable clk\n");
679 goto fail_power;
680 }
681
682 ret = regulator_bulk_enable(OV5693_NUM_SUPPLIES, ov5693->supplies);
683 if (ret) {
684 dev_err(ov5693->dev, "Failed to enable regulators\n");
685 goto fail_power;
686 }
687
688 gpiod_set_value_cansleep(ov5693->powerdown, 0);
689 gpiod_set_value_cansleep(ov5693->reset, 0);
690 gpiod_set_value_cansleep(ov5693->privacy_led, 1);
691
692 usleep_range(5000, 7500);
693
694 return 0;
695
696 fail_power:
697 ov5693_sensor_powerdown(ov5693);
698 return ret;
699 }
700
ov5693_sensor_suspend(struct device * dev)701 static int __maybe_unused ov5693_sensor_suspend(struct device *dev)
702 {
703 struct v4l2_subdev *sd = dev_get_drvdata(dev);
704 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
705
706 ov5693_sensor_powerdown(ov5693);
707
708 return 0;
709 }
710
ov5693_sensor_resume(struct device * dev)711 static int __maybe_unused ov5693_sensor_resume(struct device *dev)
712 {
713 struct v4l2_subdev *sd = dev_get_drvdata(dev);
714 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
715 int ret;
716
717 mutex_lock(&ov5693->lock);
718
719 ret = ov5693_sensor_powerup(ov5693);
720 if (ret)
721 goto out_unlock;
722
723 ret = ov5693_sensor_init(ov5693);
724 if (ret) {
725 dev_err(dev, "ov5693 sensor init failure\n");
726 goto err_power;
727 }
728
729 goto out_unlock;
730
731 err_power:
732 ov5693_sensor_powerdown(ov5693);
733 out_unlock:
734 mutex_unlock(&ov5693->lock);
735 return ret;
736 }
737
ov5693_detect(struct ov5693_device * ov5693)738 static int ov5693_detect(struct ov5693_device *ov5693)
739 {
740 int ret;
741 u64 id;
742
743 ret = cci_read(ov5693->regmap, OV5693_REG_CHIP_ID, &id, NULL);
744 if (ret)
745 return ret;
746
747 if (id != OV5693_CHIP_ID)
748 return dev_err_probe(ov5693->dev, -ENODEV,
749 "sensor ID mismatch. Got 0x%04llx\n", id);
750
751 return 0;
752 }
753
754 /* V4L2 Framework callbacks */
755
__ov5693_calc_vts(u32 height)756 static unsigned int __ov5693_calc_vts(u32 height)
757 {
758 /*
759 * We need to set a sensible default VTS for whatever format height we
760 * happen to be given from set_fmt(). This function just targets
761 * an even multiple of 30fps.
762 */
763
764 unsigned int tgt_fps;
765
766 tgt_fps = rounddown(OV5693_PIXEL_RATE / OV5693_FIXED_PPL / height, 30);
767
768 return ALIGN_DOWN(OV5693_PIXEL_RATE / OV5693_FIXED_PPL / tgt_fps, 2);
769 }
770
771 static struct v4l2_mbus_framefmt *
__ov5693_get_pad_format(struct ov5693_device * ov5693,struct v4l2_subdev_state * state,unsigned int pad,enum v4l2_subdev_format_whence which)772 __ov5693_get_pad_format(struct ov5693_device *ov5693,
773 struct v4l2_subdev_state *state,
774 unsigned int pad, enum v4l2_subdev_format_whence which)
775 {
776 switch (which) {
777 case V4L2_SUBDEV_FORMAT_TRY:
778 return v4l2_subdev_state_get_format(state, pad);
779 case V4L2_SUBDEV_FORMAT_ACTIVE:
780 return &ov5693->mode.format;
781 default:
782 return NULL;
783 }
784 }
785
786 static struct v4l2_rect *
__ov5693_get_pad_crop(struct ov5693_device * ov5693,struct v4l2_subdev_state * state,unsigned int pad,enum v4l2_subdev_format_whence which)787 __ov5693_get_pad_crop(struct ov5693_device *ov5693,
788 struct v4l2_subdev_state *state,
789 unsigned int pad, enum v4l2_subdev_format_whence which)
790 {
791 switch (which) {
792 case V4L2_SUBDEV_FORMAT_TRY:
793 return v4l2_subdev_state_get_crop(state, pad);
794 case V4L2_SUBDEV_FORMAT_ACTIVE:
795 return &ov5693->mode.crop;
796 }
797
798 return NULL;
799 }
800
ov5693_get_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * state,struct v4l2_subdev_format * format)801 static int ov5693_get_fmt(struct v4l2_subdev *sd,
802 struct v4l2_subdev_state *state,
803 struct v4l2_subdev_format *format)
804 {
805 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
806
807 format->format = ov5693->mode.format;
808
809 return 0;
810 }
811
ov5693_set_fmt(struct v4l2_subdev * sd,struct v4l2_subdev_state * state,struct v4l2_subdev_format * format)812 static int ov5693_set_fmt(struct v4l2_subdev *sd,
813 struct v4l2_subdev_state *state,
814 struct v4l2_subdev_format *format)
815 {
816 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
817 const struct v4l2_rect *crop;
818 struct v4l2_mbus_framefmt *fmt;
819 unsigned int hratio, vratio;
820 unsigned int width, height;
821 unsigned int hblank;
822 int exposure_max;
823
824 crop = __ov5693_get_pad_crop(ov5693, state, format->pad, format->which);
825
826 /*
827 * Align to two to simplify the binning calculations below, and clamp
828 * the requested format at the crop rectangle
829 */
830 width = clamp_t(unsigned int, ALIGN(format->format.width, 2),
831 OV5693_MIN_CROP_WIDTH, crop->width);
832 height = clamp_t(unsigned int, ALIGN(format->format.height, 2),
833 OV5693_MIN_CROP_HEIGHT, crop->height);
834
835 /*
836 * We can only support setting either the dimensions of the crop rect
837 * or those dimensions binned (separately) by a factor of two.
838 */
839 hratio = clamp_t(unsigned int,
840 DIV_ROUND_CLOSEST(crop->width, width), 1, 2);
841 vratio = clamp_t(unsigned int,
842 DIV_ROUND_CLOSEST(crop->height, height), 1, 2);
843
844 fmt = __ov5693_get_pad_format(ov5693, state, format->pad,
845 format->which);
846
847 fmt->width = crop->width / hratio;
848 fmt->height = crop->height / vratio;
849 fmt->code = MEDIA_BUS_FMT_SBGGR10_1X10;
850
851 format->format = *fmt;
852
853 if (format->which == V4L2_SUBDEV_FORMAT_TRY)
854 return 0;
855
856 mutex_lock(&ov5693->lock);
857
858 ov5693->mode.binning_x = hratio > 1;
859 ov5693->mode.inc_x_odd = hratio > 1 ? 3 : 1;
860 ov5693->mode.binning_y = vratio > 1;
861 ov5693->mode.inc_y_odd = vratio > 1 ? 3 : 1;
862
863 ov5693->mode.vts = __ov5693_calc_vts(fmt->height);
864
865 __v4l2_ctrl_modify_range(ov5693->ctrls.vblank,
866 OV5693_TIMING_MIN_VTS,
867 OV5693_TIMING_MAX_VTS - fmt->height,
868 1, ov5693->mode.vts - fmt->height);
869 __v4l2_ctrl_s_ctrl(ov5693->ctrls.vblank,
870 ov5693->mode.vts - fmt->height);
871
872 hblank = OV5693_FIXED_PPL - fmt->width;
873 __v4l2_ctrl_modify_range(ov5693->ctrls.hblank, hblank, hblank, 1,
874 hblank);
875
876 exposure_max = ov5693->mode.vts - OV5693_INTEGRATION_TIME_MARGIN;
877 __v4l2_ctrl_modify_range(ov5693->ctrls.exposure,
878 ov5693->ctrls.exposure->minimum, exposure_max,
879 ov5693->ctrls.exposure->step,
880 min(ov5693->ctrls.exposure->val,
881 exposure_max));
882
883 mutex_unlock(&ov5693->lock);
884 return 0;
885 }
886
ov5693_get_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * state,struct v4l2_subdev_selection * sel)887 static int ov5693_get_selection(struct v4l2_subdev *sd,
888 struct v4l2_subdev_state *state,
889 struct v4l2_subdev_selection *sel)
890 {
891 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
892
893 switch (sel->target) {
894 case V4L2_SEL_TGT_CROP:
895 mutex_lock(&ov5693->lock);
896 sel->r = *__ov5693_get_pad_crop(ov5693, state, sel->pad,
897 sel->which);
898 mutex_unlock(&ov5693->lock);
899 break;
900 case V4L2_SEL_TGT_NATIVE_SIZE:
901 sel->r.top = 0;
902 sel->r.left = 0;
903 sel->r.width = OV5693_NATIVE_WIDTH;
904 sel->r.height = OV5693_NATIVE_HEIGHT;
905 break;
906 case V4L2_SEL_TGT_CROP_BOUNDS:
907 case V4L2_SEL_TGT_CROP_DEFAULT:
908 sel->r.top = OV5693_ACTIVE_START_TOP;
909 sel->r.left = OV5693_ACTIVE_START_LEFT;
910 sel->r.width = OV5693_ACTIVE_WIDTH;
911 sel->r.height = OV5693_ACTIVE_HEIGHT;
912 break;
913 default:
914 return -EINVAL;
915 }
916
917 return 0;
918 }
919
ov5693_set_selection(struct v4l2_subdev * sd,struct v4l2_subdev_state * state,struct v4l2_subdev_selection * sel)920 static int ov5693_set_selection(struct v4l2_subdev *sd,
921 struct v4l2_subdev_state *state,
922 struct v4l2_subdev_selection *sel)
923 {
924 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
925 struct v4l2_mbus_framefmt *format;
926 struct v4l2_rect *__crop;
927 struct v4l2_rect rect;
928
929 if (sel->target != V4L2_SEL_TGT_CROP)
930 return -EINVAL;
931
932 /*
933 * Clamp the boundaries of the crop rectangle to the size of the sensor
934 * pixel array. Align to multiples of 2 to ensure Bayer pattern isn't
935 * disrupted.
936 */
937 rect.left = clamp(ALIGN(sel->r.left, 2), OV5693_NATIVE_START_LEFT,
938 OV5693_NATIVE_WIDTH);
939 rect.top = clamp(ALIGN(sel->r.top, 2), OV5693_NATIVE_START_TOP,
940 OV5693_NATIVE_HEIGHT);
941 rect.width = clamp_t(unsigned int, ALIGN(sel->r.width, 2),
942 OV5693_MIN_CROP_WIDTH, OV5693_NATIVE_WIDTH);
943 rect.height = clamp_t(unsigned int, ALIGN(sel->r.height, 2),
944 OV5693_MIN_CROP_HEIGHT, OV5693_NATIVE_HEIGHT);
945
946 /* Make sure the crop rectangle isn't outside the bounds of the array */
947 rect.width = min_t(unsigned int, rect.width,
948 OV5693_NATIVE_WIDTH - rect.left);
949 rect.height = min_t(unsigned int, rect.height,
950 OV5693_NATIVE_HEIGHT - rect.top);
951
952 __crop = __ov5693_get_pad_crop(ov5693, state, sel->pad, sel->which);
953
954 if (rect.width != __crop->width || rect.height != __crop->height) {
955 /*
956 * Reset the output image size if the crop rectangle size has
957 * been modified.
958 */
959 format = __ov5693_get_pad_format(ov5693, state, sel->pad,
960 sel->which);
961 format->width = rect.width;
962 format->height = rect.height;
963 }
964
965 *__crop = rect;
966 sel->r = rect;
967
968 return 0;
969 }
970
ov5693_s_stream(struct v4l2_subdev * sd,int enable)971 static int ov5693_s_stream(struct v4l2_subdev *sd, int enable)
972 {
973 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
974 int ret;
975
976 if (enable) {
977 ret = pm_runtime_resume_and_get(ov5693->dev);
978 if (ret)
979 return ret;
980
981 mutex_lock(&ov5693->lock);
982 ret = __v4l2_ctrl_handler_setup(&ov5693->ctrls.handler);
983 if (ret) {
984 mutex_unlock(&ov5693->lock);
985 goto err_power_down;
986 }
987
988 ret = ov5693_enable_streaming(ov5693, true);
989 mutex_unlock(&ov5693->lock);
990 } else {
991 mutex_lock(&ov5693->lock);
992 ret = ov5693_enable_streaming(ov5693, false);
993 mutex_unlock(&ov5693->lock);
994 }
995 if (ret)
996 goto err_power_down;
997
998 if (!enable)
999 pm_runtime_put(ov5693->dev);
1000
1001 return 0;
1002 err_power_down:
1003 pm_runtime_put_noidle(ov5693->dev);
1004 return ret;
1005 }
1006
ov5693_get_frame_interval(struct v4l2_subdev * sd,struct v4l2_subdev_state * sd_state,struct v4l2_subdev_frame_interval * interval)1007 static int ov5693_get_frame_interval(struct v4l2_subdev *sd,
1008 struct v4l2_subdev_state *sd_state,
1009 struct v4l2_subdev_frame_interval *interval)
1010 {
1011 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
1012 unsigned int framesize = OV5693_FIXED_PPL * (ov5693->mode.format.height +
1013 ov5693->ctrls.vblank->val);
1014 unsigned int fps = DIV_ROUND_CLOSEST(OV5693_PIXEL_RATE, framesize);
1015
1016 /*
1017 * FIXME: Implement support for V4L2_SUBDEV_FORMAT_TRY, using the V4L2
1018 * subdev active state API.
1019 */
1020 if (interval->which != V4L2_SUBDEV_FORMAT_ACTIVE)
1021 return -EINVAL;
1022
1023 interval->interval.numerator = 1;
1024 interval->interval.denominator = fps;
1025
1026 return 0;
1027 }
1028
ov5693_enum_mbus_code(struct v4l2_subdev * sd,struct v4l2_subdev_state * state,struct v4l2_subdev_mbus_code_enum * code)1029 static int ov5693_enum_mbus_code(struct v4l2_subdev *sd,
1030 struct v4l2_subdev_state *state,
1031 struct v4l2_subdev_mbus_code_enum *code)
1032 {
1033 /* Only a single mbus format is supported */
1034 if (code->index > 0)
1035 return -EINVAL;
1036
1037 code->code = MEDIA_BUS_FMT_SBGGR10_1X10;
1038 return 0;
1039 }
1040
ov5693_enum_frame_size(struct v4l2_subdev * sd,struct v4l2_subdev_state * state,struct v4l2_subdev_frame_size_enum * fse)1041 static int ov5693_enum_frame_size(struct v4l2_subdev *sd,
1042 struct v4l2_subdev_state *state,
1043 struct v4l2_subdev_frame_size_enum *fse)
1044 {
1045 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
1046 struct v4l2_rect *__crop;
1047
1048 if (fse->index > 1 || fse->code != MEDIA_BUS_FMT_SBGGR10_1X10)
1049 return -EINVAL;
1050
1051 __crop = __ov5693_get_pad_crop(ov5693, state, fse->pad, fse->which);
1052 if (!__crop)
1053 return -EINVAL;
1054
1055 fse->min_width = __crop->width / (fse->index + 1);
1056 fse->min_height = __crop->height / (fse->index + 1);
1057 fse->max_width = fse->min_width;
1058 fse->max_height = fse->min_height;
1059
1060 return 0;
1061 }
1062
1063 static const struct v4l2_subdev_video_ops ov5693_video_ops = {
1064 .s_stream = ov5693_s_stream,
1065 };
1066
1067 static const struct v4l2_subdev_pad_ops ov5693_pad_ops = {
1068 .enum_mbus_code = ov5693_enum_mbus_code,
1069 .enum_frame_size = ov5693_enum_frame_size,
1070 .get_fmt = ov5693_get_fmt,
1071 .set_fmt = ov5693_set_fmt,
1072 .get_selection = ov5693_get_selection,
1073 .set_selection = ov5693_set_selection,
1074 .get_frame_interval = ov5693_get_frame_interval,
1075 };
1076
1077 static const struct v4l2_subdev_ops ov5693_ops = {
1078 .video = &ov5693_video_ops,
1079 .pad = &ov5693_pad_ops,
1080 };
1081
1082 /* Sensor and Driver Configuration Functions */
1083
ov5693_init_controls(struct ov5693_device * ov5693)1084 static int ov5693_init_controls(struct ov5693_device *ov5693)
1085 {
1086 const struct v4l2_ctrl_ops *ops = &ov5693_ctrl_ops;
1087 struct ov5693_v4l2_ctrls *ctrls = &ov5693->ctrls;
1088 struct v4l2_fwnode_device_properties props;
1089 int vblank_max, vblank_def;
1090 int exposure_max;
1091 int hblank;
1092 int ret;
1093
1094 ret = v4l2_ctrl_handler_init(&ctrls->handler, 12);
1095 if (ret)
1096 return ret;
1097
1098 /* link freq */
1099 ctrls->link_freq = v4l2_ctrl_new_int_menu(&ctrls->handler,
1100 NULL, V4L2_CID_LINK_FREQ,
1101 0, 0, link_freq_menu_items);
1102 if (ctrls->link_freq)
1103 ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1104
1105 /* pixel rate */
1106 ctrls->pixel_rate = v4l2_ctrl_new_std(&ctrls->handler, NULL,
1107 V4L2_CID_PIXEL_RATE, 0,
1108 OV5693_PIXEL_RATE, 1,
1109 OV5693_PIXEL_RATE);
1110
1111 /* Exposure */
1112 exposure_max = ov5693->mode.vts - OV5693_INTEGRATION_TIME_MARGIN;
1113 ctrls->exposure = v4l2_ctrl_new_std(&ctrls->handler, ops,
1114 V4L2_CID_EXPOSURE,
1115 OV5693_EXPOSURE_MIN, exposure_max,
1116 OV5693_EXPOSURE_STEP, exposure_max);
1117
1118 /* Gain */
1119 ctrls->analogue_gain = v4l2_ctrl_new_std(&ctrls->handler,
1120 ops, V4L2_CID_ANALOGUE_GAIN,
1121 OV5693_GAIN_MIN,
1122 OV5693_GAIN_MAX,
1123 OV5693_GAIN_STEP,
1124 OV5693_GAIN_DEF);
1125
1126 ctrls->digital_gain = v4l2_ctrl_new_std(&ctrls->handler, ops,
1127 V4L2_CID_DIGITAL_GAIN,
1128 OV5693_DIGITAL_GAIN_MIN,
1129 OV5693_DIGITAL_GAIN_MAX,
1130 OV5693_DIGITAL_GAIN_STEP,
1131 OV5693_DIGITAL_GAIN_DEF);
1132
1133 /* Flip */
1134 ctrls->hflip = v4l2_ctrl_new_std(&ctrls->handler, ops,
1135 V4L2_CID_HFLIP, 0, 1, 1, 0);
1136
1137 ctrls->vflip = v4l2_ctrl_new_std(&ctrls->handler, ops,
1138 V4L2_CID_VFLIP, 0, 1, 1, 0);
1139
1140 hblank = OV5693_FIXED_PPL - ov5693->mode.format.width;
1141 ctrls->hblank = v4l2_ctrl_new_std(&ctrls->handler, ops,
1142 V4L2_CID_HBLANK, hblank,
1143 hblank, 1, hblank);
1144
1145 if (ctrls->hblank)
1146 ctrls->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
1147
1148 vblank_max = OV5693_TIMING_MAX_VTS - ov5693->mode.format.height;
1149 vblank_def = ov5693->mode.vts - ov5693->mode.format.height;
1150 ctrls->vblank = v4l2_ctrl_new_std(&ctrls->handler, ops,
1151 V4L2_CID_VBLANK,
1152 OV5693_TIMING_MIN_VTS,
1153 vblank_max, 1, vblank_def);
1154
1155 ctrls->test_pattern = v4l2_ctrl_new_std_menu_items(
1156 &ctrls->handler, ops,
1157 V4L2_CID_TEST_PATTERN,
1158 ARRAY_SIZE(ov5693_test_pattern_menu) - 1,
1159 0, 0, ov5693_test_pattern_menu);
1160
1161 if (ctrls->handler.error) {
1162 dev_err(ov5693->dev, "Error initialising v4l2 ctrls\n");
1163 ret = ctrls->handler.error;
1164 goto err_free_handler;
1165 }
1166
1167 /* set properties from fwnode (e.g. rotation, orientation) */
1168 ret = v4l2_fwnode_device_parse(ov5693->dev, &props);
1169 if (ret)
1170 goto err_free_handler;
1171
1172 ret = v4l2_ctrl_new_fwnode_properties(&ctrls->handler, ops,
1173 &props);
1174 if (ret)
1175 goto err_free_handler;
1176
1177 /* Use same lock for controls as for everything else. */
1178 ctrls->handler.lock = &ov5693->lock;
1179 ov5693->sd.ctrl_handler = &ctrls->handler;
1180
1181 return 0;
1182
1183 err_free_handler:
1184 v4l2_ctrl_handler_free(&ctrls->handler);
1185 return ret;
1186 }
1187
ov5693_configure_gpios(struct ov5693_device * ov5693)1188 static int ov5693_configure_gpios(struct ov5693_device *ov5693)
1189 {
1190 ov5693->reset = devm_gpiod_get_optional(ov5693->dev, "reset",
1191 GPIOD_OUT_HIGH);
1192 if (IS_ERR(ov5693->reset)) {
1193 dev_err(ov5693->dev, "Error fetching reset GPIO\n");
1194 return PTR_ERR(ov5693->reset);
1195 }
1196
1197 ov5693->powerdown = devm_gpiod_get_optional(ov5693->dev, "powerdown",
1198 GPIOD_OUT_HIGH);
1199 if (IS_ERR(ov5693->powerdown)) {
1200 dev_err(ov5693->dev, "Error fetching powerdown GPIO\n");
1201 return PTR_ERR(ov5693->powerdown);
1202 }
1203
1204 ov5693->privacy_led = devm_gpiod_get_optional(ov5693->dev, "privacy-led",
1205 GPIOD_OUT_LOW);
1206 if (IS_ERR(ov5693->privacy_led)) {
1207 dev_err(ov5693->dev, "Error fetching privacy-led GPIO\n");
1208 return PTR_ERR(ov5693->privacy_led);
1209 }
1210
1211 return 0;
1212 }
1213
ov5693_get_regulators(struct ov5693_device * ov5693)1214 static int ov5693_get_regulators(struct ov5693_device *ov5693)
1215 {
1216 unsigned int i;
1217
1218 for (i = 0; i < OV5693_NUM_SUPPLIES; i++)
1219 ov5693->supplies[i].supply = ov5693_supply_names[i];
1220
1221 return devm_regulator_bulk_get(ov5693->dev, OV5693_NUM_SUPPLIES,
1222 ov5693->supplies);
1223 }
1224
ov5693_check_hwcfg(struct ov5693_device * ov5693)1225 static int ov5693_check_hwcfg(struct ov5693_device *ov5693)
1226 {
1227 struct fwnode_handle *fwnode = dev_fwnode(ov5693->dev);
1228 struct v4l2_fwnode_endpoint bus_cfg = {
1229 .bus_type = V4L2_MBUS_CSI2_DPHY,
1230 };
1231 struct fwnode_handle *endpoint;
1232 unsigned int i;
1233 int ret;
1234
1235 endpoint = fwnode_graph_get_next_endpoint(fwnode, NULL);
1236 if (!endpoint)
1237 return -EPROBE_DEFER; /* Could be provided by cio2-bridge */
1238
1239 ret = v4l2_fwnode_endpoint_alloc_parse(endpoint, &bus_cfg);
1240 fwnode_handle_put(endpoint);
1241 if (ret)
1242 return ret;
1243
1244 if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2) {
1245 dev_err(ov5693->dev, "only a 2-lane CSI2 config is supported");
1246 ret = -EINVAL;
1247 goto out_free_bus_cfg;
1248 }
1249
1250 if (!bus_cfg.nr_of_link_frequencies) {
1251 dev_err(ov5693->dev, "no link frequencies defined\n");
1252 ret = -EINVAL;
1253 goto out_free_bus_cfg;
1254 }
1255
1256 for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
1257 if (bus_cfg.link_frequencies[i] == OV5693_LINK_FREQ_419_2MHZ)
1258 break;
1259
1260 if (i == bus_cfg.nr_of_link_frequencies) {
1261 dev_err(ov5693->dev, "supported link freq %ull not found\n",
1262 OV5693_LINK_FREQ_419_2MHZ);
1263 ret = -EINVAL;
1264 goto out_free_bus_cfg;
1265 }
1266
1267 out_free_bus_cfg:
1268 v4l2_fwnode_endpoint_free(&bus_cfg);
1269
1270 return ret;
1271 }
1272
ov5693_probe(struct i2c_client * client)1273 static int ov5693_probe(struct i2c_client *client)
1274 {
1275 struct ov5693_device *ov5693;
1276 u32 xvclk_rate;
1277 int ret = 0;
1278
1279 ov5693 = devm_kzalloc(&client->dev, sizeof(*ov5693), GFP_KERNEL);
1280 if (!ov5693)
1281 return -ENOMEM;
1282
1283 ov5693->dev = &client->dev;
1284
1285 ov5693->regmap = devm_cci_regmap_init_i2c(client, 16);
1286 if (IS_ERR(ov5693->regmap))
1287 return PTR_ERR(ov5693->regmap);
1288
1289 ret = ov5693_check_hwcfg(ov5693);
1290 if (ret)
1291 return ret;
1292
1293 mutex_init(&ov5693->lock);
1294
1295 v4l2_i2c_subdev_init(&ov5693->sd, client, &ov5693_ops);
1296
1297 ov5693->xvclk = devm_clk_get_optional(&client->dev, "xvclk");
1298 if (IS_ERR(ov5693->xvclk))
1299 return dev_err_probe(&client->dev, PTR_ERR(ov5693->xvclk),
1300 "failed to get xvclk: %ld\n",
1301 PTR_ERR(ov5693->xvclk));
1302
1303 if (ov5693->xvclk) {
1304 xvclk_rate = clk_get_rate(ov5693->xvclk);
1305 } else {
1306 ret = fwnode_property_read_u32(dev_fwnode(&client->dev),
1307 "clock-frequency",
1308 &xvclk_rate);
1309
1310 if (ret) {
1311 dev_err(&client->dev, "can't get clock frequency");
1312 return ret;
1313 }
1314 }
1315
1316 if (xvclk_rate != OV5693_XVCLK_FREQ)
1317 dev_warn(&client->dev, "Found clk freq %u, expected %u\n",
1318 xvclk_rate, OV5693_XVCLK_FREQ);
1319
1320 ret = ov5693_configure_gpios(ov5693);
1321 if (ret)
1322 return ret;
1323
1324 ret = ov5693_get_regulators(ov5693);
1325 if (ret)
1326 return dev_err_probe(&client->dev, ret,
1327 "Error fetching regulators\n");
1328
1329 ov5693->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
1330 ov5693->pad.flags = MEDIA_PAD_FL_SOURCE;
1331 ov5693->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
1332
1333 ov5693->mode.crop = ov5693_default_crop;
1334 ov5693->mode.format = ov5693_default_fmt;
1335 ov5693->mode.vts = __ov5693_calc_vts(ov5693->mode.format.height);
1336
1337 ret = ov5693_init_controls(ov5693);
1338 if (ret)
1339 return ret;
1340
1341 ret = media_entity_pads_init(&ov5693->sd.entity, 1, &ov5693->pad);
1342 if (ret)
1343 goto err_ctrl_handler_free;
1344
1345 /*
1346 * We need the driver to work in the event that pm runtime is disable in
1347 * the kernel, so power up and verify the chip now. In the event that
1348 * runtime pm is disabled this will leave the chip on, so that streaming
1349 * will work.
1350 */
1351
1352 ret = ov5693_sensor_powerup(ov5693);
1353 if (ret)
1354 goto err_media_entity_cleanup;
1355
1356 ret = ov5693_detect(ov5693);
1357 if (ret)
1358 goto err_powerdown;
1359
1360 pm_runtime_set_active(&client->dev);
1361 pm_runtime_get_noresume(&client->dev);
1362 pm_runtime_enable(&client->dev);
1363
1364 ret = v4l2_async_register_subdev_sensor(&ov5693->sd);
1365 if (ret) {
1366 dev_err(&client->dev, "failed to register V4L2 subdev: %d",
1367 ret);
1368 goto err_pm_runtime;
1369 }
1370
1371 pm_runtime_set_autosuspend_delay(&client->dev, 1000);
1372 pm_runtime_use_autosuspend(&client->dev);
1373 pm_runtime_put_autosuspend(&client->dev);
1374
1375 return ret;
1376
1377 err_pm_runtime:
1378 pm_runtime_disable(&client->dev);
1379 pm_runtime_put_noidle(&client->dev);
1380 err_powerdown:
1381 ov5693_sensor_powerdown(ov5693);
1382 err_media_entity_cleanup:
1383 media_entity_cleanup(&ov5693->sd.entity);
1384 err_ctrl_handler_free:
1385 v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
1386
1387 return ret;
1388 }
1389
ov5693_remove(struct i2c_client * client)1390 static void ov5693_remove(struct i2c_client *client)
1391 {
1392 struct v4l2_subdev *sd = i2c_get_clientdata(client);
1393 struct ov5693_device *ov5693 = to_ov5693_sensor(sd);
1394
1395 v4l2_async_unregister_subdev(sd);
1396 media_entity_cleanup(&ov5693->sd.entity);
1397 v4l2_ctrl_handler_free(&ov5693->ctrls.handler);
1398 mutex_destroy(&ov5693->lock);
1399
1400 /*
1401 * Disable runtime PM. In case runtime PM is disabled in the kernel,
1402 * make sure to turn power off manually.
1403 */
1404 pm_runtime_disable(&client->dev);
1405 if (!pm_runtime_status_suspended(&client->dev))
1406 ov5693_sensor_powerdown(ov5693);
1407 pm_runtime_set_suspended(&client->dev);
1408 }
1409
1410 static const struct dev_pm_ops ov5693_pm_ops = {
1411 SET_RUNTIME_PM_OPS(ov5693_sensor_suspend, ov5693_sensor_resume, NULL)
1412 };
1413
1414 static const struct acpi_device_id ov5693_acpi_match[] = {
1415 {"INT33BE"},
1416 {},
1417 };
1418 MODULE_DEVICE_TABLE(acpi, ov5693_acpi_match);
1419
1420 static const struct of_device_id ov5693_of_match[] = {
1421 { .compatible = "ovti,ov5693", },
1422 { /* sentinel */ },
1423 };
1424 MODULE_DEVICE_TABLE(of, ov5693_of_match);
1425
1426 static struct i2c_driver ov5693_driver = {
1427 .driver = {
1428 .name = "ov5693",
1429 .acpi_match_table = ov5693_acpi_match,
1430 .of_match_table = ov5693_of_match,
1431 .pm = &ov5693_pm_ops,
1432 },
1433 .probe = ov5693_probe,
1434 .remove = ov5693_remove,
1435 };
1436 module_i2c_driver(ov5693_driver);
1437
1438 MODULE_DESCRIPTION("A low-level driver for OmniVision 5693 sensors");
1439 MODULE_LICENSE("GPL");
1440