1519 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * A V4L2 driver for OmniVision OV5647 cameras.4 *5 * Based on Samsung S5K6AAFX SXGA 1/6" 1.3M CMOS Image Sensor driver6 * Copyright (C) 2011 Sylwester Nawrocki <s.nawrocki@samsung.com>7 *8 * Based on Omnivision OV7670 Camera Driver9 * Copyright (C) 2006-7 Jonathan Corbet <corbet@lwn.net>10 *11 * Copyright (C) 2016, Synopsys, Inc.12 */13 14#include <linux/clk.h>15#include <linux/delay.h>16#include <linux/gpio/consumer.h>17#include <linux/i2c.h>18#include <linux/init.h>19#include <linux/io.h>20#include <linux/module.h>21#include <linux/of_graph.h>22#include <linux/pm_runtime.h>23#include <linux/slab.h>24#include <linux/videodev2.h>25#include <media/v4l2-ctrls.h>26#include <media/v4l2-device.h>27#include <media/v4l2-event.h>28#include <media/v4l2-fwnode.h>29#include <media/v4l2-image-sizes.h>30#include <media/v4l2-mediabus.h>31 32/*33 * From the datasheet, "20ms after PWDN goes low or 20ms after RESETB goes34 * high if reset is inserted after PWDN goes high, host can access sensor's35 * SCCB to initialize sensor."36 */37#define PWDN_ACTIVE_DELAY_MS 2038 39#define MIPI_CTRL00_CLOCK_LANE_GATE BIT(5)40#define MIPI_CTRL00_LINE_SYNC_ENABLE BIT(4)41#define MIPI_CTRL00_BUS_IDLE BIT(2)42#define MIPI_CTRL00_CLOCK_LANE_DISABLE BIT(0)43 44#define OV5647_SW_STANDBY 0x010045#define OV5647_SW_RESET 0x010346#define OV5647_REG_CHIPID_H 0x300a47#define OV5647_REG_CHIPID_L 0x300b48#define OV5640_REG_PAD_OUT 0x300d49#define OV5647_REG_EXP_HI 0x350050#define OV5647_REG_EXP_MID 0x350151#define OV5647_REG_EXP_LO 0x350252#define OV5647_REG_AEC_AGC 0x350353#define OV5647_REG_GAIN_HI 0x350a54#define OV5647_REG_GAIN_LO 0x350b55#define OV5647_REG_VTS_HI 0x380e56#define OV5647_REG_VTS_LO 0x380f57#define OV5647_REG_FRAME_OFF_NUMBER 0x420258#define OV5647_REG_MIPI_CTRL00 0x480059#define OV5647_REG_MIPI_CTRL14 0x481460#define OV5647_REG_AWB 0x500161#define OV5647_REG_ISPCTRL3D 0x503d62 63#define REG_TERM 0xfffe64#define VAL_TERM 0xfe65#define REG_DLY 0xffff66 67/* OV5647 native and active pixel array size */68#define OV5647_NATIVE_WIDTH 2624U69#define OV5647_NATIVE_HEIGHT 1956U70 71#define OV5647_PIXEL_ARRAY_LEFT 16U72#define OV5647_PIXEL_ARRAY_TOP 16U73#define OV5647_PIXEL_ARRAY_WIDTH 2592U74#define OV5647_PIXEL_ARRAY_HEIGHT 1944U75 76#define OV5647_VBLANK_MIN 477#define OV5647_VTS_MAX 3276778 79#define OV5647_EXPOSURE_MIN 480#define OV5647_EXPOSURE_STEP 181#define OV5647_EXPOSURE_DEFAULT 100082#define OV5647_EXPOSURE_MAX 6553583 84struct regval_list {85 u16 addr;86 u8 data;87};88 89struct ov5647_mode {90 struct v4l2_mbus_framefmt format;91 struct v4l2_rect crop;92 u64 pixel_rate;93 int hts;94 int vts;95 const struct regval_list *reg_list;96 unsigned int num_regs;97};98 99struct ov5647 {100 struct v4l2_subdev sd;101 struct media_pad pad;102 struct mutex lock;103 struct clk *xclk;104 struct gpio_desc *pwdn;105 bool clock_ncont;106 struct v4l2_ctrl_handler ctrls;107 const struct ov5647_mode *mode;108 struct v4l2_ctrl *pixel_rate;109 struct v4l2_ctrl *hblank;110 struct v4l2_ctrl *vblank;111 struct v4l2_ctrl *exposure;112};113 114static inline struct ov5647 *to_sensor(struct v4l2_subdev *sd)115{116 return container_of(sd, struct ov5647, sd);117}118 119static const char * const ov5647_test_pattern_menu[] = {120 "Disabled",121 "Color Bars",122 "Color Squares",123 "Random Data",124};125 126static const u8 ov5647_test_pattern_val[] = {127 0x00, /* Disabled */128 0x80, /* Color Bars */129 0x82, /* Color Squares */130 0x81, /* Random Data */131};132 133static const struct regval_list sensor_oe_disable_regs[] = {134 {0x3000, 0x00},135 {0x3001, 0x00},136 {0x3002, 0x00},137};138 139static const struct regval_list sensor_oe_enable_regs[] = {140 {0x3000, 0x0f},141 {0x3001, 0xff},142 {0x3002, 0xe4},143};144 145static struct regval_list ov5647_2592x1944_10bpp[] = {146 {0x0100, 0x00},147 {0x0103, 0x01},148 {0x3034, 0x1a},149 {0x3035, 0x21},150 {0x3036, 0x69},151 {0x303c, 0x11},152 {0x3106, 0xf5},153 {0x3821, 0x06},154 {0x3820, 0x00},155 {0x3827, 0xec},156 {0x370c, 0x03},157 {0x3612, 0x5b},158 {0x3618, 0x04},159 {0x5000, 0x06},160 {0x5002, 0x41},161 {0x5003, 0x08},162 {0x5a00, 0x08},163 {0x3000, 0x00},164 {0x3001, 0x00},165 {0x3002, 0x00},166 {0x3016, 0x08},167 {0x3017, 0xe0},168 {0x3018, 0x44},169 {0x301c, 0xf8},170 {0x301d, 0xf0},171 {0x3a18, 0x00},172 {0x3a19, 0xf8},173 {0x3c01, 0x80},174 {0x3b07, 0x0c},175 {0x380c, 0x0b},176 {0x380d, 0x1c},177 {0x3814, 0x11},178 {0x3815, 0x11},179 {0x3708, 0x64},180 {0x3709, 0x12},181 {0x3808, 0x0a},182 {0x3809, 0x20},183 {0x380a, 0x07},184 {0x380b, 0x98},185 {0x3800, 0x00},186 {0x3801, 0x00},187 {0x3802, 0x00},188 {0x3803, 0x00},189 {0x3804, 0x0a},190 {0x3805, 0x3f},191 {0x3806, 0x07},192 {0x3807, 0xa3},193 {0x3811, 0x10},194 {0x3813, 0x06},195 {0x3630, 0x2e},196 {0x3632, 0xe2},197 {0x3633, 0x23},198 {0x3634, 0x44},199 {0x3636, 0x06},200 {0x3620, 0x64},201 {0x3621, 0xe0},202 {0x3600, 0x37},203 {0x3704, 0xa0},204 {0x3703, 0x5a},205 {0x3715, 0x78},206 {0x3717, 0x01},207 {0x3731, 0x02},208 {0x370b, 0x60},209 {0x3705, 0x1a},210 {0x3f05, 0x02},211 {0x3f06, 0x10},212 {0x3f01, 0x0a},213 {0x3a08, 0x01},214 {0x3a09, 0x28},215 {0x3a0a, 0x00},216 {0x3a0b, 0xf6},217 {0x3a0d, 0x08},218 {0x3a0e, 0x06},219 {0x3a0f, 0x58},220 {0x3a10, 0x50},221 {0x3a1b, 0x58},222 {0x3a1e, 0x50},223 {0x3a11, 0x60},224 {0x3a1f, 0x28},225 {0x4001, 0x02},226 {0x4004, 0x04},227 {0x4000, 0x09},228 {0x4837, 0x19},229 {0x4800, 0x24},230 {0x3503, 0x03},231 {0x0100, 0x01},232};233 234static struct regval_list ov5647_1080p30_10bpp[] = {235 {0x0100, 0x00},236 {0x0103, 0x01},237 {0x3034, 0x1a},238 {0x3035, 0x21},239 {0x3036, 0x62},240 {0x303c, 0x11},241 {0x3106, 0xf5},242 {0x3821, 0x06},243 {0x3820, 0x00},244 {0x3827, 0xec},245 {0x370c, 0x03},246 {0x3612, 0x5b},247 {0x3618, 0x04},248 {0x5000, 0x06},249 {0x5002, 0x41},250 {0x5003, 0x08},251 {0x5a00, 0x08},252 {0x3000, 0x00},253 {0x3001, 0x00},254 {0x3002, 0x00},255 {0x3016, 0x08},256 {0x3017, 0xe0},257 {0x3018, 0x44},258 {0x301c, 0xf8},259 {0x301d, 0xf0},260 {0x3a18, 0x00},261 {0x3a19, 0xf8},262 {0x3c01, 0x80},263 {0x3b07, 0x0c},264 {0x380c, 0x09},265 {0x380d, 0x70},266 {0x3814, 0x11},267 {0x3815, 0x11},268 {0x3708, 0x64},269 {0x3709, 0x12},270 {0x3808, 0x07},271 {0x3809, 0x80},272 {0x380a, 0x04},273 {0x380b, 0x38},274 {0x3800, 0x01},275 {0x3801, 0x5c},276 {0x3802, 0x01},277 {0x3803, 0xb2},278 {0x3804, 0x08},279 {0x3805, 0xe3},280 {0x3806, 0x05},281 {0x3807, 0xf1},282 {0x3811, 0x04},283 {0x3813, 0x02},284 {0x3630, 0x2e},285 {0x3632, 0xe2},286 {0x3633, 0x23},287 {0x3634, 0x44},288 {0x3636, 0x06},289 {0x3620, 0x64},290 {0x3621, 0xe0},291 {0x3600, 0x37},292 {0x3704, 0xa0},293 {0x3703, 0x5a},294 {0x3715, 0x78},295 {0x3717, 0x01},296 {0x3731, 0x02},297 {0x370b, 0x60},298 {0x3705, 0x1a},299 {0x3f05, 0x02},300 {0x3f06, 0x10},301 {0x3f01, 0x0a},302 {0x3a08, 0x01},303 {0x3a09, 0x4b},304 {0x3a0a, 0x01},305 {0x3a0b, 0x13},306 {0x3a0d, 0x04},307 {0x3a0e, 0x03},308 {0x3a0f, 0x58},309 {0x3a10, 0x50},310 {0x3a1b, 0x58},311 {0x3a1e, 0x50},312 {0x3a11, 0x60},313 {0x3a1f, 0x28},314 {0x4001, 0x02},315 {0x4004, 0x04},316 {0x4000, 0x09},317 {0x4837, 0x19},318 {0x4800, 0x34},319 {0x3503, 0x03},320 {0x0100, 0x01},321};322 323static struct regval_list ov5647_2x2binned_10bpp[] = {324 {0x0100, 0x00},325 {0x0103, 0x01},326 {0x3034, 0x1a},327 {0x3035, 0x21},328 {0x3036, 0x62},329 {0x303c, 0x11},330 {0x3106, 0xf5},331 {0x3827, 0xec},332 {0x370c, 0x03},333 {0x3612, 0x59},334 {0x3618, 0x00},335 {0x5000, 0x06},336 {0x5002, 0x41},337 {0x5003, 0x08},338 {0x5a00, 0x08},339 {0x3000, 0x00},340 {0x3001, 0x00},341 {0x3002, 0x00},342 {0x3016, 0x08},343 {0x3017, 0xe0},344 {0x3018, 0x44},345 {0x301c, 0xf8},346 {0x301d, 0xf0},347 {0x3a18, 0x00},348 {0x3a19, 0xf8},349 {0x3c01, 0x80},350 {0x3b07, 0x0c},351 {0x3800, 0x00},352 {0x3801, 0x00},353 {0x3802, 0x00},354 {0x3803, 0x00},355 {0x3804, 0x0a},356 {0x3805, 0x3f},357 {0x3806, 0x07},358 {0x3807, 0xa3},359 {0x3808, 0x05},360 {0x3809, 0x10},361 {0x380a, 0x03},362 {0x380b, 0xcc},363 {0x380c, 0x07},364 {0x380d, 0x68},365 {0x3811, 0x0c},366 {0x3813, 0x06},367 {0x3814, 0x31},368 {0x3815, 0x31},369 {0x3630, 0x2e},370 {0x3632, 0xe2},371 {0x3633, 0x23},372 {0x3634, 0x44},373 {0x3636, 0x06},374 {0x3620, 0x64},375 {0x3621, 0xe0},376 {0x3600, 0x37},377 {0x3704, 0xa0},378 {0x3703, 0x5a},379 {0x3715, 0x78},380 {0x3717, 0x01},381 {0x3731, 0x02},382 {0x370b, 0x60},383 {0x3705, 0x1a},384 {0x3f05, 0x02},385 {0x3f06, 0x10},386 {0x3f01, 0x0a},387 {0x3a08, 0x01},388 {0x3a09, 0x28},389 {0x3a0a, 0x00},390 {0x3a0b, 0xf6},391 {0x3a0d, 0x08},392 {0x3a0e, 0x06},393 {0x3a0f, 0x58},394 {0x3a10, 0x50},395 {0x3a1b, 0x58},396 {0x3a1e, 0x50},397 {0x3a11, 0x60},398 {0x3a1f, 0x28},399 {0x4001, 0x02},400 {0x4004, 0x04},401 {0x4000, 0x09},402 {0x4837, 0x16},403 {0x4800, 0x24},404 {0x3503, 0x03},405 {0x3820, 0x41},406 {0x3821, 0x07},407 {0x350a, 0x00},408 {0x350b, 0x10},409 {0x3500, 0x00},410 {0x3501, 0x1a},411 {0x3502, 0xf0},412 {0x3212, 0xa0},413 {0x0100, 0x01},414};415 416static struct regval_list ov5647_640x480_10bpp[] = {417 {0x0100, 0x00},418 {0x0103, 0x01},419 {0x3035, 0x11},420 {0x3036, 0x46},421 {0x303c, 0x11},422 {0x3821, 0x07},423 {0x3820, 0x41},424 {0x370c, 0x03},425 {0x3612, 0x59},426 {0x3618, 0x00},427 {0x5000, 0x06},428 {0x5003, 0x08},429 {0x5a00, 0x08},430 {0x3000, 0xff},431 {0x3001, 0xff},432 {0x3002, 0xff},433 {0x301d, 0xf0},434 {0x3a18, 0x00},435 {0x3a19, 0xf8},436 {0x3c01, 0x80},437 {0x3b07, 0x0c},438 {0x380c, 0x07},439 {0x380d, 0x3c},440 {0x3814, 0x35},441 {0x3815, 0x35},442 {0x3708, 0x64},443 {0x3709, 0x52},444 {0x3808, 0x02},445 {0x3809, 0x80},446 {0x380a, 0x01},447 {0x380b, 0xe0},448 {0x3800, 0x00},449 {0x3801, 0x10},450 {0x3802, 0x00},451 {0x3803, 0x00},452 {0x3804, 0x0a},453 {0x3805, 0x2f},454 {0x3806, 0x07},455 {0x3807, 0x9f},456 {0x3630, 0x2e},457 {0x3632, 0xe2},458 {0x3633, 0x23},459 {0x3634, 0x44},460 {0x3620, 0x64},461 {0x3621, 0xe0},462 {0x3600, 0x37},463 {0x3704, 0xa0},464 {0x3703, 0x5a},465 {0x3715, 0x78},466 {0x3717, 0x01},467 {0x3731, 0x02},468 {0x370b, 0x60},469 {0x3705, 0x1a},470 {0x3f05, 0x02},471 {0x3f06, 0x10},472 {0x3f01, 0x0a},473 {0x3a08, 0x01},474 {0x3a09, 0x2e},475 {0x3a0a, 0x00},476 {0x3a0b, 0xfb},477 {0x3a0d, 0x02},478 {0x3a0e, 0x01},479 {0x3a0f, 0x58},480 {0x3a10, 0x50},481 {0x3a1b, 0x58},482 {0x3a1e, 0x50},483 {0x3a11, 0x60},484 {0x3a1f, 0x28},485 {0x4001, 0x02},486 {0x4004, 0x02},487 {0x4000, 0x09},488 {0x3000, 0x00},489 {0x3001, 0x00},490 {0x3002, 0x00},491 {0x3017, 0xe0},492 {0x301c, 0xfc},493 {0x3636, 0x06},494 {0x3016, 0x08},495 {0x3827, 0xec},496 {0x3018, 0x44},497 {0x3035, 0x21},498 {0x3106, 0xf5},499 {0x3034, 0x1a},500 {0x301c, 0xf8},501 {0x4800, 0x34},502 {0x3503, 0x03},503 {0x0100, 0x01},504};505 506static const struct ov5647_mode ov5647_modes[] = {507 /* 2592x1944 full resolution full FOV 10-bit mode. */508 {509 .format = {510 .code = MEDIA_BUS_FMT_SBGGR10_1X10,511 .colorspace = V4L2_COLORSPACE_SRGB,512 .field = V4L2_FIELD_NONE,513 .width = 2592,514 .height = 1944515 },516 .crop = {517 .left = OV5647_PIXEL_ARRAY_LEFT,518 .top = OV5647_PIXEL_ARRAY_TOP,519 .width = 2592,520 .height = 1944521 },522 .pixel_rate = 87500000,523 .hts = 2844,524 .vts = 0x7b0,525 .reg_list = ov5647_2592x1944_10bpp,526 .num_regs = ARRAY_SIZE(ov5647_2592x1944_10bpp)527 },528 /* 1080p30 10-bit mode. Full resolution centre-cropped down to 1080p. */529 {530 .format = {531 .code = MEDIA_BUS_FMT_SBGGR10_1X10,532 .colorspace = V4L2_COLORSPACE_SRGB,533 .field = V4L2_FIELD_NONE,534 .width = 1920,535 .height = 1080536 },537 .crop = {538 .left = 348 + OV5647_PIXEL_ARRAY_LEFT,539 .top = 434 + OV5647_PIXEL_ARRAY_TOP,540 .width = 1928,541 .height = 1080,542 },543 .pixel_rate = 81666700,544 .hts = 2416,545 .vts = 0x450,546 .reg_list = ov5647_1080p30_10bpp,547 .num_regs = ARRAY_SIZE(ov5647_1080p30_10bpp)548 },549 /* 2x2 binned full FOV 10-bit mode. */550 {551 .format = {552 .code = MEDIA_BUS_FMT_SBGGR10_1X10,553 .colorspace = V4L2_COLORSPACE_SRGB,554 .field = V4L2_FIELD_NONE,555 .width = 1296,556 .height = 972557 },558 .crop = {559 .left = OV5647_PIXEL_ARRAY_LEFT,560 .top = OV5647_PIXEL_ARRAY_TOP,561 .width = 2592,562 .height = 1944,563 },564 .pixel_rate = 81666700,565 .hts = 1896,566 .vts = 0x59b,567 .reg_list = ov5647_2x2binned_10bpp,568 .num_regs = ARRAY_SIZE(ov5647_2x2binned_10bpp)569 },570 /* 10-bit VGA full FOV 60fps. 2x2 binned and subsampled down to VGA. */571 {572 .format = {573 .code = MEDIA_BUS_FMT_SBGGR10_1X10,574 .colorspace = V4L2_COLORSPACE_SRGB,575 .field = V4L2_FIELD_NONE,576 .width = 640,577 .height = 480578 },579 .crop = {580 .left = 16 + OV5647_PIXEL_ARRAY_LEFT,581 .top = OV5647_PIXEL_ARRAY_TOP,582 .width = 2560,583 .height = 1920,584 },585 .pixel_rate = 55000000,586 .hts = 1852,587 .vts = 0x1f8,588 .reg_list = ov5647_640x480_10bpp,589 .num_regs = ARRAY_SIZE(ov5647_640x480_10bpp)590 },591};592 593/* Default sensor mode is 2x2 binned 640x480 SBGGR10_1X10. */594#define OV5647_DEFAULT_MODE (&ov5647_modes[3])595#define OV5647_DEFAULT_FORMAT (ov5647_modes[3].format)596 597static int ov5647_write16(struct v4l2_subdev *sd, u16 reg, u16 val)598{599 unsigned char data[4] = { reg >> 8, reg & 0xff, val >> 8, val & 0xff};600 struct i2c_client *client = v4l2_get_subdevdata(sd);601 int ret;602 603 ret = i2c_master_send(client, data, 4);604 if (ret < 0) {605 dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",606 __func__, reg);607 return ret;608 }609 610 return 0;611}612 613static int ov5647_write(struct v4l2_subdev *sd, u16 reg, u8 val)614{615 unsigned char data[3] = { reg >> 8, reg & 0xff, val};616 struct i2c_client *client = v4l2_get_subdevdata(sd);617 int ret;618 619 ret = i2c_master_send(client, data, 3);620 if (ret < 0) {621 dev_dbg(&client->dev, "%s: i2c write error, reg: %x\n",622 __func__, reg);623 return ret;624 }625 626 return 0;627}628 629static int ov5647_read(struct v4l2_subdev *sd, u16 reg, u8 *val)630{631 struct i2c_client *client = v4l2_get_subdevdata(sd);632 u8 buf[2] = { reg >> 8, reg & 0xff };633 struct i2c_msg msg[2];634 int ret;635 636 msg[0].addr = client->addr;637 msg[0].flags = client->flags;638 msg[0].buf = buf;639 msg[0].len = sizeof(buf);640 641 msg[1].addr = client->addr;642 msg[1].flags = client->flags | I2C_M_RD;643 msg[1].buf = buf;644 msg[1].len = 1;645 646 ret = i2c_transfer(client->adapter, msg, 2);647 if (ret != 2) {648 dev_err(&client->dev, "%s: i2c read error, reg: %x = %d\n",649 __func__, reg, ret);650 return ret >= 0 ? -EINVAL : ret;651 }652 653 *val = buf[0];654 655 return 0;656}657 658static int ov5647_write_array(struct v4l2_subdev *sd,659 const struct regval_list *regs, int array_size)660{661 int i, ret;662 663 for (i = 0; i < array_size; i++) {664 ret = ov5647_write(sd, regs[i].addr, regs[i].data);665 if (ret < 0)666 return ret;667 }668 669 return 0;670}671 672static int ov5647_set_virtual_channel(struct v4l2_subdev *sd, int channel)673{674 u8 channel_id;675 int ret;676 677 ret = ov5647_read(sd, OV5647_REG_MIPI_CTRL14, &channel_id);678 if (ret < 0)679 return ret;680 681 channel_id &= ~(3 << 6);682 683 return ov5647_write(sd, OV5647_REG_MIPI_CTRL14,684 channel_id | (channel << 6));685}686 687static int ov5647_set_mode(struct v4l2_subdev *sd)688{689 struct i2c_client *client = v4l2_get_subdevdata(sd);690 struct ov5647 *sensor = to_sensor(sd);691 u8 resetval, rdval;692 int ret;693 694 ret = ov5647_read(sd, OV5647_SW_STANDBY, &rdval);695 if (ret < 0)696 return ret;697 698 ret = ov5647_write_array(sd, sensor->mode->reg_list,699 sensor->mode->num_regs);700 if (ret < 0) {701 dev_err(&client->dev, "write sensor default regs error\n");702 return ret;703 }704 705 ret = ov5647_set_virtual_channel(sd, 0);706 if (ret < 0)707 return ret;708 709 ret = ov5647_read(sd, OV5647_SW_STANDBY, &resetval);710 if (ret < 0)711 return ret;712 713 if (!(resetval & 0x01)) {714 dev_err(&client->dev, "Device was in SW standby");715 ret = ov5647_write(sd, OV5647_SW_STANDBY, 0x01);716 if (ret < 0)717 return ret;718 }719 720 return 0;721}722 723static int ov5647_stream_on(struct v4l2_subdev *sd)724{725 struct i2c_client *client = v4l2_get_subdevdata(sd);726 struct ov5647 *sensor = to_sensor(sd);727 u8 val = MIPI_CTRL00_BUS_IDLE;728 int ret;729 730 ret = ov5647_set_mode(sd);731 if (ret) {732 dev_err(&client->dev, "Failed to program sensor mode: %d\n", ret);733 return ret;734 }735 736 /* Apply customized values from user when stream starts. */737 ret = __v4l2_ctrl_handler_setup(sd->ctrl_handler);738 if (ret)739 return ret;740 741 if (sensor->clock_ncont)742 val |= MIPI_CTRL00_CLOCK_LANE_GATE |743 MIPI_CTRL00_LINE_SYNC_ENABLE;744 745 ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00, val);746 if (ret < 0)747 return ret;748 749 ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x00);750 if (ret < 0)751 return ret;752 753 return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x00);754}755 756static int ov5647_stream_off(struct v4l2_subdev *sd)757{758 int ret;759 760 ret = ov5647_write(sd, OV5647_REG_MIPI_CTRL00,761 MIPI_CTRL00_CLOCK_LANE_GATE | MIPI_CTRL00_BUS_IDLE |762 MIPI_CTRL00_CLOCK_LANE_DISABLE);763 if (ret < 0)764 return ret;765 766 ret = ov5647_write(sd, OV5647_REG_FRAME_OFF_NUMBER, 0x0f);767 if (ret < 0)768 return ret;769 770 return ov5647_write(sd, OV5640_REG_PAD_OUT, 0x01);771}772 773static int ov5647_power_on(struct device *dev)774{775 struct ov5647 *sensor = dev_get_drvdata(dev);776 int ret;777 778 dev_dbg(dev, "OV5647 power on\n");779 780 if (sensor->pwdn) {781 gpiod_set_value_cansleep(sensor->pwdn, 0);782 msleep(PWDN_ACTIVE_DELAY_MS);783 }784 785 ret = clk_prepare_enable(sensor->xclk);786 if (ret < 0) {787 dev_err(dev, "clk prepare enable failed\n");788 goto error_pwdn;789 }790 791 ret = ov5647_write_array(&sensor->sd, sensor_oe_enable_regs,792 ARRAY_SIZE(sensor_oe_enable_regs));793 if (ret < 0) {794 dev_err(dev, "write sensor_oe_enable_regs error\n");795 goto error_clk_disable;796 }797 798 /* Stream off to coax lanes into LP-11 state. */799 ret = ov5647_stream_off(&sensor->sd);800 if (ret < 0) {801 dev_err(dev, "camera not available, check power\n");802 goto error_clk_disable;803 }804 805 return 0;806 807error_clk_disable:808 clk_disable_unprepare(sensor->xclk);809error_pwdn:810 gpiod_set_value_cansleep(sensor->pwdn, 1);811 812 return ret;813}814 815static int ov5647_power_off(struct device *dev)816{817 struct ov5647 *sensor = dev_get_drvdata(dev);818 u8 rdval;819 int ret;820 821 dev_dbg(dev, "OV5647 power off\n");822 823 ret = ov5647_write_array(&sensor->sd, sensor_oe_disable_regs,824 ARRAY_SIZE(sensor_oe_disable_regs));825 if (ret < 0)826 dev_dbg(dev, "disable oe failed\n");827 828 /* Enter software standby */829 ret = ov5647_read(&sensor->sd, OV5647_SW_STANDBY, &rdval);830 if (ret < 0)831 dev_dbg(dev, "software standby failed\n");832 833 rdval &= ~0x01;834 ret = ov5647_write(&sensor->sd, OV5647_SW_STANDBY, rdval);835 if (ret < 0)836 dev_dbg(dev, "software standby failed\n");837 838 clk_disable_unprepare(sensor->xclk);839 gpiod_set_value_cansleep(sensor->pwdn, 1);840 841 return 0;842}843 844#ifdef CONFIG_VIDEO_ADV_DEBUG845static int ov5647_sensor_get_register(struct v4l2_subdev *sd,846 struct v4l2_dbg_register *reg)847{848 int ret;849 u8 val;850 851 ret = ov5647_read(sd, reg->reg & 0xff, &val);852 if (ret < 0)853 return ret;854 855 reg->val = val;856 reg->size = 1;857 858 return 0;859}860 861static int ov5647_sensor_set_register(struct v4l2_subdev *sd,862 const struct v4l2_dbg_register *reg)863{864 return ov5647_write(sd, reg->reg & 0xff, reg->val & 0xff);865}866#endif867 868/* Subdev core operations registration */869static const struct v4l2_subdev_core_ops ov5647_subdev_core_ops = {870 .subscribe_event = v4l2_ctrl_subdev_subscribe_event,871 .unsubscribe_event = v4l2_event_subdev_unsubscribe,872#ifdef CONFIG_VIDEO_ADV_DEBUG873 .g_register = ov5647_sensor_get_register,874 .s_register = ov5647_sensor_set_register,875#endif876};877 878static const struct v4l2_rect *879__ov5647_get_pad_crop(struct ov5647 *ov5647,880 struct v4l2_subdev_state *sd_state,881 unsigned int pad, enum v4l2_subdev_format_whence which)882{883 switch (which) {884 case V4L2_SUBDEV_FORMAT_TRY:885 return v4l2_subdev_state_get_crop(sd_state, pad);886 case V4L2_SUBDEV_FORMAT_ACTIVE:887 return &ov5647->mode->crop;888 }889 890 return NULL;891}892 893static int ov5647_s_stream(struct v4l2_subdev *sd, int enable)894{895 struct i2c_client *client = v4l2_get_subdevdata(sd);896 struct ov5647 *sensor = to_sensor(sd);897 int ret;898 899 mutex_lock(&sensor->lock);900 901 if (enable) {902 ret = pm_runtime_resume_and_get(&client->dev);903 if (ret < 0)904 goto error_unlock;905 906 ret = ov5647_stream_on(sd);907 if (ret < 0) {908 dev_err(&client->dev, "stream start failed: %d\n", ret);909 goto error_pm;910 }911 } else {912 ret = ov5647_stream_off(sd);913 if (ret < 0) {914 dev_err(&client->dev, "stream stop failed: %d\n", ret);915 goto error_pm;916 }917 pm_runtime_put(&client->dev);918 }919 920 mutex_unlock(&sensor->lock);921 922 return 0;923 924error_pm:925 pm_runtime_put(&client->dev);926error_unlock:927 mutex_unlock(&sensor->lock);928 929 return ret;930}931 932static const struct v4l2_subdev_video_ops ov5647_subdev_video_ops = {933 .s_stream = ov5647_s_stream,934};935 936static int ov5647_enum_mbus_code(struct v4l2_subdev *sd,937 struct v4l2_subdev_state *sd_state,938 struct v4l2_subdev_mbus_code_enum *code)939{940 if (code->index > 0)941 return -EINVAL;942 943 code->code = MEDIA_BUS_FMT_SBGGR10_1X10;944 945 return 0;946}947 948static int ov5647_enum_frame_size(struct v4l2_subdev *sd,949 struct v4l2_subdev_state *sd_state,950 struct v4l2_subdev_frame_size_enum *fse)951{952 const struct v4l2_mbus_framefmt *fmt;953 954 if (fse->code != MEDIA_BUS_FMT_SBGGR10_1X10 ||955 fse->index >= ARRAY_SIZE(ov5647_modes))956 return -EINVAL;957 958 fmt = &ov5647_modes[fse->index].format;959 fse->min_width = fmt->width;960 fse->max_width = fmt->width;961 fse->min_height = fmt->height;962 fse->max_height = fmt->height;963 964 return 0;965}966 967static int ov5647_get_pad_fmt(struct v4l2_subdev *sd,968 struct v4l2_subdev_state *sd_state,969 struct v4l2_subdev_format *format)970{971 struct v4l2_mbus_framefmt *fmt = &format->format;972 const struct v4l2_mbus_framefmt *sensor_format;973 struct ov5647 *sensor = to_sensor(sd);974 975 mutex_lock(&sensor->lock);976 switch (format->which) {977 case V4L2_SUBDEV_FORMAT_TRY:978 sensor_format = v4l2_subdev_state_get_format(sd_state,979 format->pad);980 break;981 default:982 sensor_format = &sensor->mode->format;983 break;984 }985 986 *fmt = *sensor_format;987 mutex_unlock(&sensor->lock);988 989 return 0;990}991 992static int ov5647_set_pad_fmt(struct v4l2_subdev *sd,993 struct v4l2_subdev_state *sd_state,994 struct v4l2_subdev_format *format)995{996 struct v4l2_mbus_framefmt *fmt = &format->format;997 struct ov5647 *sensor = to_sensor(sd);998 const struct ov5647_mode *mode;999 1000 mode = v4l2_find_nearest_size(ov5647_modes, ARRAY_SIZE(ov5647_modes),1001 format.width, format.height,1002 fmt->width, fmt->height);1003 1004 /* Update the sensor mode and apply at it at streamon time. */1005 mutex_lock(&sensor->lock);1006 if (format->which == V4L2_SUBDEV_FORMAT_TRY) {1007 *v4l2_subdev_state_get_format(sd_state, format->pad) = mode->format;1008 } else {1009 int exposure_max, exposure_def;1010 int hblank, vblank;1011 1012 sensor->mode = mode;1013 __v4l2_ctrl_modify_range(sensor->pixel_rate, mode->pixel_rate,1014 mode->pixel_rate, 1, mode->pixel_rate);1015 1016 hblank = mode->hts - mode->format.width;1017 __v4l2_ctrl_modify_range(sensor->hblank, hblank, hblank, 1,1018 hblank);1019 1020 vblank = mode->vts - mode->format.height;1021 __v4l2_ctrl_modify_range(sensor->vblank, OV5647_VBLANK_MIN,1022 OV5647_VTS_MAX - mode->format.height,1023 1, vblank);1024 __v4l2_ctrl_s_ctrl(sensor->vblank, vblank);1025 1026 exposure_max = mode->vts - 4;1027 exposure_def = min(exposure_max, OV5647_EXPOSURE_DEFAULT);1028 __v4l2_ctrl_modify_range(sensor->exposure,1029 sensor->exposure->minimum,1030 exposure_max, sensor->exposure->step,1031 exposure_def);1032 }1033 *fmt = mode->format;1034 mutex_unlock(&sensor->lock);1035 1036 return 0;1037}1038 1039static int ov5647_get_selection(struct v4l2_subdev *sd,1040 struct v4l2_subdev_state *sd_state,1041 struct v4l2_subdev_selection *sel)1042{1043 switch (sel->target) {1044 case V4L2_SEL_TGT_CROP: {1045 struct ov5647 *sensor = to_sensor(sd);1046 1047 mutex_lock(&sensor->lock);1048 sel->r = *__ov5647_get_pad_crop(sensor, sd_state, sel->pad,1049 sel->which);1050 mutex_unlock(&sensor->lock);1051 1052 return 0;1053 }1054 1055 case V4L2_SEL_TGT_NATIVE_SIZE:1056 sel->r.top = 0;1057 sel->r.left = 0;1058 sel->r.width = OV5647_NATIVE_WIDTH;1059 sel->r.height = OV5647_NATIVE_HEIGHT;1060 1061 return 0;1062 1063 case V4L2_SEL_TGT_CROP_DEFAULT:1064 case V4L2_SEL_TGT_CROP_BOUNDS:1065 sel->r.top = OV5647_PIXEL_ARRAY_TOP;1066 sel->r.left = OV5647_PIXEL_ARRAY_LEFT;1067 sel->r.width = OV5647_PIXEL_ARRAY_WIDTH;1068 sel->r.height = OV5647_PIXEL_ARRAY_HEIGHT;1069 1070 return 0;1071 }1072 1073 return -EINVAL;1074}1075 1076static const struct v4l2_subdev_pad_ops ov5647_subdev_pad_ops = {1077 .enum_mbus_code = ov5647_enum_mbus_code,1078 .enum_frame_size = ov5647_enum_frame_size,1079 .set_fmt = ov5647_set_pad_fmt,1080 .get_fmt = ov5647_get_pad_fmt,1081 .get_selection = ov5647_get_selection,1082};1083 1084static const struct v4l2_subdev_ops ov5647_subdev_ops = {1085 .core = &ov5647_subdev_core_ops,1086 .video = &ov5647_subdev_video_ops,1087 .pad = &ov5647_subdev_pad_ops,1088};1089 1090static int ov5647_detect(struct v4l2_subdev *sd)1091{1092 struct i2c_client *client = v4l2_get_subdevdata(sd);1093 u8 read;1094 int ret;1095 1096 ret = ov5647_write(sd, OV5647_SW_RESET, 0x01);1097 if (ret < 0)1098 return ret;1099 1100 ret = ov5647_read(sd, OV5647_REG_CHIPID_H, &read);1101 if (ret < 0)1102 return ret;1103 1104 if (read != 0x56) {1105 dev_err(&client->dev, "ID High expected 0x56 got %x", read);1106 return -ENODEV;1107 }1108 1109 ret = ov5647_read(sd, OV5647_REG_CHIPID_L, &read);1110 if (ret < 0)1111 return ret;1112 1113 if (read != 0x47) {1114 dev_err(&client->dev, "ID Low expected 0x47 got %x", read);1115 return -ENODEV;1116 }1117 1118 return ov5647_write(sd, OV5647_SW_RESET, 0x00);1119}1120 1121static int ov5647_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)1122{1123 struct v4l2_mbus_framefmt *format =1124 v4l2_subdev_state_get_format(fh->state, 0);1125 struct v4l2_rect *crop = v4l2_subdev_state_get_crop(fh->state, 0);1126 1127 crop->left = OV5647_PIXEL_ARRAY_LEFT;1128 crop->top = OV5647_PIXEL_ARRAY_TOP;1129 crop->width = OV5647_PIXEL_ARRAY_WIDTH;1130 crop->height = OV5647_PIXEL_ARRAY_HEIGHT;1131 1132 *format = OV5647_DEFAULT_FORMAT;1133 1134 return 0;1135}1136 1137static const struct v4l2_subdev_internal_ops ov5647_subdev_internal_ops = {1138 .open = ov5647_open,1139};1140 1141static int ov5647_s_auto_white_balance(struct v4l2_subdev *sd, u32 val)1142{1143 return ov5647_write(sd, OV5647_REG_AWB, val ? 1 : 0);1144}1145 1146static int ov5647_s_autogain(struct v4l2_subdev *sd, u32 val)1147{1148 int ret;1149 u8 reg;1150 1151 /* Non-zero turns on AGC by clearing bit 1.*/1152 ret = ov5647_read(sd, OV5647_REG_AEC_AGC, ®);1153 if (ret)1154 return ret;1155 1156 return ov5647_write(sd, OV5647_REG_AEC_AGC, val ? reg & ~BIT(1)1157 : reg | BIT(1));1158}1159 1160static int ov5647_s_exposure_auto(struct v4l2_subdev *sd, u32 val)1161{1162 int ret;1163 u8 reg;1164 1165 /*1166 * Everything except V4L2_EXPOSURE_MANUAL turns on AEC by1167 * clearing bit 0.1168 */1169 ret = ov5647_read(sd, OV5647_REG_AEC_AGC, ®);1170 if (ret)1171 return ret;1172 1173 return ov5647_write(sd, OV5647_REG_AEC_AGC,1174 val == V4L2_EXPOSURE_MANUAL ? reg | BIT(0)1175 : reg & ~BIT(0));1176}1177 1178static int ov5647_s_analogue_gain(struct v4l2_subdev *sd, u32 val)1179{1180 int ret;1181 1182 /* 10 bits of gain, 2 in the high register. */1183 ret = ov5647_write(sd, OV5647_REG_GAIN_HI, (val >> 8) & 3);1184 if (ret)1185 return ret;1186 1187 return ov5647_write(sd, OV5647_REG_GAIN_LO, val & 0xff);1188}1189 1190static int ov5647_s_exposure(struct v4l2_subdev *sd, u32 val)1191{1192 int ret;1193 1194 /*1195 * Sensor has 20 bits, but the bottom 4 bits are fractions of a line1196 * which we leave as zero (and don't receive in "val").1197 */1198 ret = ov5647_write(sd, OV5647_REG_EXP_HI, (val >> 12) & 0xf);1199 if (ret)1200 return ret;1201 1202 ret = ov5647_write(sd, OV5647_REG_EXP_MID, (val >> 4) & 0xff);1203 if (ret)1204 return ret;1205 1206 return ov5647_write(sd, OV5647_REG_EXP_LO, (val & 0xf) << 4);1207}1208 1209static int ov5647_s_ctrl(struct v4l2_ctrl *ctrl)1210{1211 struct ov5647 *sensor = container_of(ctrl->handler,1212 struct ov5647, ctrls);1213 struct v4l2_subdev *sd = &sensor->sd;1214 struct i2c_client *client = v4l2_get_subdevdata(sd);1215 int ret = 0;1216 1217 1218 /* v4l2_ctrl_lock() locks our own mutex */1219 1220 if (ctrl->id == V4L2_CID_VBLANK) {1221 int exposure_max, exposure_def;1222 1223 /* Update max exposure while meeting expected vblanking */1224 exposure_max = sensor->mode->format.height + ctrl->val - 4;1225 exposure_def = min(exposure_max, OV5647_EXPOSURE_DEFAULT);1226 __v4l2_ctrl_modify_range(sensor->exposure,1227 sensor->exposure->minimum,1228 exposure_max, sensor->exposure->step,1229 exposure_def);1230 }1231 1232 /*1233 * If the device is not powered up do not apply any controls1234 * to H/W at this time. Instead the controls will be restored1235 * at s_stream(1) time.1236 */1237 if (pm_runtime_get_if_in_use(&client->dev) == 0)1238 return 0;1239 1240 switch (ctrl->id) {1241 case V4L2_CID_AUTO_WHITE_BALANCE:1242 ret = ov5647_s_auto_white_balance(sd, ctrl->val);1243 break;1244 case V4L2_CID_AUTOGAIN:1245 ret = ov5647_s_autogain(sd, ctrl->val);1246 break;1247 case V4L2_CID_EXPOSURE_AUTO:1248 ret = ov5647_s_exposure_auto(sd, ctrl->val);1249 break;1250 case V4L2_CID_ANALOGUE_GAIN:1251 ret = ov5647_s_analogue_gain(sd, ctrl->val);1252 break;1253 case V4L2_CID_EXPOSURE:1254 ret = ov5647_s_exposure(sd, ctrl->val);1255 break;1256 case V4L2_CID_VBLANK:1257 ret = ov5647_write16(sd, OV5647_REG_VTS_HI,1258 sensor->mode->format.height + ctrl->val);1259 break;1260 case V4L2_CID_TEST_PATTERN:1261 ret = ov5647_write(sd, OV5647_REG_ISPCTRL3D,1262 ov5647_test_pattern_val[ctrl->val]);1263 break;1264 1265 /* Read-only, but we adjust it based on mode. */1266 case V4L2_CID_PIXEL_RATE:1267 case V4L2_CID_HBLANK:1268 /* Read-only, but we adjust it based on mode. */1269 break;1270 1271 default:1272 dev_info(&client->dev,1273 "Control (id:0x%x, val:0x%x) not supported\n",1274 ctrl->id, ctrl->val);1275 return -EINVAL;1276 }1277 1278 pm_runtime_put(&client->dev);1279 1280 return ret;1281}1282 1283static const struct v4l2_ctrl_ops ov5647_ctrl_ops = {1284 .s_ctrl = ov5647_s_ctrl,1285};1286 1287static int ov5647_init_controls(struct ov5647 *sensor)1288{1289 struct i2c_client *client = v4l2_get_subdevdata(&sensor->sd);1290 int hblank, exposure_max, exposure_def;1291 1292 v4l2_ctrl_handler_init(&sensor->ctrls, 9);1293 1294 v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,1295 V4L2_CID_AUTOGAIN, 0, 1, 1, 0);1296 1297 v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,1298 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 0);1299 1300 v4l2_ctrl_new_std_menu(&sensor->ctrls, &ov5647_ctrl_ops,1301 V4L2_CID_EXPOSURE_AUTO, V4L2_EXPOSURE_MANUAL,1302 0, V4L2_EXPOSURE_MANUAL);1303 1304 exposure_max = sensor->mode->vts - 4;1305 exposure_def = min(exposure_max, OV5647_EXPOSURE_DEFAULT);1306 sensor->exposure = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,1307 V4L2_CID_EXPOSURE,1308 OV5647_EXPOSURE_MIN,1309 exposure_max, OV5647_EXPOSURE_STEP,1310 exposure_def);1311 1312 /* min: 16 = 1.0x; max (10 bits); default: 32 = 2.0x. */1313 v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,1314 V4L2_CID_ANALOGUE_GAIN, 16, 1023, 1, 32);1315 1316 /* By default, PIXEL_RATE is read only, but it does change per mode */1317 sensor->pixel_rate = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,1318 V4L2_CID_PIXEL_RATE,1319 sensor->mode->pixel_rate,1320 sensor->mode->pixel_rate, 1,1321 sensor->mode->pixel_rate);1322 1323 /* By default, HBLANK is read only, but it does change per mode. */1324 hblank = sensor->mode->hts - sensor->mode->format.width;1325 sensor->hblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,1326 V4L2_CID_HBLANK, hblank, hblank, 1,1327 hblank);1328 1329 sensor->vblank = v4l2_ctrl_new_std(&sensor->ctrls, &ov5647_ctrl_ops,1330 V4L2_CID_VBLANK, OV5647_VBLANK_MIN,1331 OV5647_VTS_MAX -1332 sensor->mode->format.height, 1,1333 sensor->mode->vts -1334 sensor->mode->format.height);1335 1336 v4l2_ctrl_new_std_menu_items(&sensor->ctrls, &ov5647_ctrl_ops,1337 V4L2_CID_TEST_PATTERN,1338 ARRAY_SIZE(ov5647_test_pattern_menu) - 1,1339 0, 0, ov5647_test_pattern_menu);1340 1341 if (sensor->ctrls.error)1342 goto handler_free;1343 1344 sensor->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY;1345 sensor->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;1346 sensor->sd.ctrl_handler = &sensor->ctrls;1347 1348 return 0;1349 1350handler_free:1351 dev_err(&client->dev, "%s Controls initialization failed (%d)\n",1352 __func__, sensor->ctrls.error);1353 v4l2_ctrl_handler_free(&sensor->ctrls);1354 1355 return sensor->ctrls.error;1356}1357 1358static int ov5647_parse_dt(struct ov5647 *sensor, struct device_node *np)1359{1360 struct v4l2_fwnode_endpoint bus_cfg = {1361 .bus_type = V4L2_MBUS_CSI2_DPHY,1362 };1363 struct device_node *ep __free(device_node) =1364 of_graph_get_endpoint_by_regs(np, 0, -1);1365 int ret;1366 1367 if (!ep)1368 return -EINVAL;1369 1370 ret = v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep), &bus_cfg);1371 if (ret)1372 return ret;1373 1374 sensor->clock_ncont = bus_cfg.bus.mipi_csi2.flags &1375 V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK;1376 1377 return 0;1378}1379 1380static int ov5647_probe(struct i2c_client *client)1381{1382 struct device_node *np = client->dev.of_node;1383 struct device *dev = &client->dev;1384 struct ov5647 *sensor;1385 struct v4l2_subdev *sd;1386 u32 xclk_freq;1387 int ret;1388 1389 sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);1390 if (!sensor)1391 return -ENOMEM;1392 1393 if (IS_ENABLED(CONFIG_OF) && np) {1394 ret = ov5647_parse_dt(sensor, np);1395 if (ret) {1396 dev_err(dev, "DT parsing error: %d\n", ret);1397 return ret;1398 }1399 }1400 1401 sensor->xclk = devm_clk_get(dev, NULL);1402 if (IS_ERR(sensor->xclk)) {1403 dev_err(dev, "could not get xclk");1404 return PTR_ERR(sensor->xclk);1405 }1406 1407 xclk_freq = clk_get_rate(sensor->xclk);1408 if (xclk_freq != 25000000) {1409 dev_err(dev, "Unsupported clock frequency: %u\n", xclk_freq);1410 return -EINVAL;1411 }1412 1413 /* Request the power down GPIO asserted. */1414 sensor->pwdn = devm_gpiod_get_optional(dev, "pwdn", GPIOD_OUT_HIGH);1415 if (IS_ERR(sensor->pwdn)) {1416 dev_err(dev, "Failed to get 'pwdn' gpio\n");1417 return -EINVAL;1418 }1419 1420 mutex_init(&sensor->lock);1421 1422 sensor->mode = OV5647_DEFAULT_MODE;1423 1424 ret = ov5647_init_controls(sensor);1425 if (ret)1426 goto mutex_destroy;1427 1428 sd = &sensor->sd;1429 v4l2_i2c_subdev_init(sd, client, &ov5647_subdev_ops);1430 sd->internal_ops = &ov5647_subdev_internal_ops;1431 sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;1432 1433 sensor->pad.flags = MEDIA_PAD_FL_SOURCE;1434 sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;1435 ret = media_entity_pads_init(&sd->entity, 1, &sensor->pad);1436 if (ret < 0)1437 goto ctrl_handler_free;1438 1439 ret = ov5647_power_on(dev);1440 if (ret)1441 goto entity_cleanup;1442 1443 ret = ov5647_detect(sd);1444 if (ret < 0)1445 goto power_off;1446 1447 ret = v4l2_async_register_subdev(sd);1448 if (ret < 0)1449 goto power_off;1450 1451 /* Enable runtime PM and turn off the device */1452 pm_runtime_set_active(dev);1453 pm_runtime_enable(dev);1454 pm_runtime_idle(dev);1455 1456 dev_dbg(dev, "OmniVision OV5647 camera driver probed\n");1457 1458 return 0;1459 1460power_off:1461 ov5647_power_off(dev);1462entity_cleanup:1463 media_entity_cleanup(&sd->entity);1464ctrl_handler_free:1465 v4l2_ctrl_handler_free(&sensor->ctrls);1466mutex_destroy:1467 mutex_destroy(&sensor->lock);1468 1469 return ret;1470}1471 1472static void ov5647_remove(struct i2c_client *client)1473{1474 struct v4l2_subdev *sd = i2c_get_clientdata(client);1475 struct ov5647 *sensor = to_sensor(sd);1476 1477 v4l2_async_unregister_subdev(&sensor->sd);1478 media_entity_cleanup(&sensor->sd.entity);1479 v4l2_ctrl_handler_free(&sensor->ctrls);1480 v4l2_device_unregister_subdev(sd);1481 pm_runtime_disable(&client->dev);1482 mutex_destroy(&sensor->lock);1483}1484 1485static const struct dev_pm_ops ov5647_pm_ops = {1486 SET_RUNTIME_PM_OPS(ov5647_power_off, ov5647_power_on, NULL)1487};1488 1489static const struct i2c_device_id ov5647_id[] = {1490 { "ov5647" },1491 { /* sentinel */ }1492};1493MODULE_DEVICE_TABLE(i2c, ov5647_id);1494 1495#if IS_ENABLED(CONFIG_OF)1496static const struct of_device_id ov5647_of_match[] = {1497 { .compatible = "ovti,ov5647" },1498 { /* sentinel */ },1499};1500MODULE_DEVICE_TABLE(of, ov5647_of_match);1501#endif1502 1503static struct i2c_driver ov5647_driver = {1504 .driver = {1505 .of_match_table = of_match_ptr(ov5647_of_match),1506 .name = "ov5647",1507 .pm = &ov5647_pm_ops,1508 },1509 .probe = ov5647_probe,1510 .remove = ov5647_remove,1511 .id_table = ov5647_id,1512};1513 1514module_i2c_driver(ov5647_driver);1515 1516MODULE_AUTHOR("Ramiro Oliveira <roliveir@synopsys.com>");1517MODULE_DESCRIPTION("A low-level driver for OmniVision ov5647 sensors");1518MODULE_LICENSE("GPL v2");1519