1432 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * Driver for RJ54N1CB0C CMOS Image Sensor from Sharp4 *5 * Copyright (C) 2018, Jacopo Mondi <jacopo@jmondi.org>6 *7 * Copyright (C) 2009, Guennadi Liakhovetski <g.liakhovetski@gmx.de>8 */9 10#include <linux/clk.h>11#include <linux/delay.h>12#include <linux/gpio/consumer.h>13#include <linux/i2c.h>14#include <linux/module.h>15#include <linux/slab.h>16#include <linux/v4l2-mediabus.h>17#include <linux/videodev2.h>18 19#include <media/i2c/rj54n1cb0c.h>20#include <media/v4l2-device.h>21#include <media/v4l2-ctrls.h>22#include <media/v4l2-subdev.h>23 24#define RJ54N1_DEV_CODE 0x040025#define RJ54N1_DEV_CODE2 0x040126#define RJ54N1_OUT_SEL 0x040327#define RJ54N1_XY_OUTPUT_SIZE_S_H 0x040428#define RJ54N1_X_OUTPUT_SIZE_S_L 0x040529#define RJ54N1_Y_OUTPUT_SIZE_S_L 0x040630#define RJ54N1_XY_OUTPUT_SIZE_P_H 0x040731#define RJ54N1_X_OUTPUT_SIZE_P_L 0x040832#define RJ54N1_Y_OUTPUT_SIZE_P_L 0x040933#define RJ54N1_LINE_LENGTH_PCK_S_H 0x040a34#define RJ54N1_LINE_LENGTH_PCK_S_L 0x040b35#define RJ54N1_LINE_LENGTH_PCK_P_H 0x040c36#define RJ54N1_LINE_LENGTH_PCK_P_L 0x040d37#define RJ54N1_RESIZE_N 0x040e38#define RJ54N1_RESIZE_N_STEP 0x040f39#define RJ54N1_RESIZE_STEP 0x041040#define RJ54N1_RESIZE_HOLD_H 0x041141#define RJ54N1_RESIZE_HOLD_L 0x041242#define RJ54N1_H_OBEN_OFS 0x041343#define RJ54N1_V_OBEN_OFS 0x041444#define RJ54N1_RESIZE_CONTROL 0x041545#define RJ54N1_STILL_CONTROL 0x041746#define RJ54N1_INC_USE_SEL_H 0x042547#define RJ54N1_INC_USE_SEL_L 0x042648#define RJ54N1_MIRROR_STILL_MODE 0x042749#define RJ54N1_INIT_START 0x042850#define RJ54N1_SCALE_1_2_LEV 0x042951#define RJ54N1_SCALE_4_LEV 0x042a52#define RJ54N1_Y_GAIN 0x04d853#define RJ54N1_APT_GAIN_UP 0x04fa54#define RJ54N1_RA_SEL_UL 0x053055#define RJ54N1_BYTE_SWAP 0x053156#define RJ54N1_OUT_SIGPO 0x053b57#define RJ54N1_WB_SEL_WEIGHT_I 0x054e58#define RJ54N1_BIT8_WB 0x056959#define RJ54N1_HCAPS_WB 0x056a60#define RJ54N1_VCAPS_WB 0x056b61#define RJ54N1_HCAPE_WB 0x056c62#define RJ54N1_VCAPE_WB 0x056d63#define RJ54N1_EXPOSURE_CONTROL 0x058c64#define RJ54N1_FRAME_LENGTH_S_H 0x059565#define RJ54N1_FRAME_LENGTH_S_L 0x059666#define RJ54N1_FRAME_LENGTH_P_H 0x059767#define RJ54N1_FRAME_LENGTH_P_L 0x059868#define RJ54N1_PEAK_H 0x05b769#define RJ54N1_PEAK_50 0x05b870#define RJ54N1_PEAK_60 0x05b971#define RJ54N1_PEAK_DIFF 0x05ba72#define RJ54N1_IOC 0x05ef73#define RJ54N1_TG_BYPASS 0x070074#define RJ54N1_PLL_L 0x070175#define RJ54N1_PLL_N 0x070276#define RJ54N1_PLL_EN 0x070477#define RJ54N1_RATIO_TG 0x070678#define RJ54N1_RATIO_T 0x070779#define RJ54N1_RATIO_R 0x070880#define RJ54N1_RAMP_TGCLK_EN 0x070981#define RJ54N1_OCLK_DSP 0x071082#define RJ54N1_RATIO_OP 0x071183#define RJ54N1_RATIO_O 0x071284#define RJ54N1_OCLK_SEL_EN 0x071385#define RJ54N1_CLK_RST 0x071786#define RJ54N1_RESET_STANDBY 0x071887#define RJ54N1_FWFLG 0x07fe88 89#define E_EXCLK (1 << 7)90#define SOFT_STDBY (1 << 4)91#define SEN_RSTX (1 << 2)92#define TG_RSTX (1 << 1)93#define DSP_RSTX (1 << 0)94 95#define RESIZE_HOLD_SEL (1 << 2)96#define RESIZE_GO (1 << 1)97 98/*99 * When cropping, the camera automatically centers the cropped region, there100 * doesn't seem to be a way to specify an explicit location of the rectangle.101 */102#define RJ54N1_COLUMN_SKIP 0103#define RJ54N1_ROW_SKIP 0104#define RJ54N1_MAX_WIDTH 1600105#define RJ54N1_MAX_HEIGHT 1200106 107#define PLL_L 2108#define PLL_N 0x31109 110/* I2C addresses: 0x50, 0x51, 0x60, 0x61 */111 112/* RJ54N1CB0C has only one fixed colorspace per pixelcode */113struct rj54n1_datafmt {114 u32 code;115 enum v4l2_colorspace colorspace;116};117 118/* Find a data format by a pixel code in an array */119static const struct rj54n1_datafmt *rj54n1_find_datafmt(120 u32 code, const struct rj54n1_datafmt *fmt,121 int n)122{123 int i;124 for (i = 0; i < n; i++)125 if (fmt[i].code == code)126 return fmt + i;127 128 return NULL;129}130 131static const struct rj54n1_datafmt rj54n1_colour_fmts[] = {132 {MEDIA_BUS_FMT_YUYV8_2X8, V4L2_COLORSPACE_JPEG},133 {MEDIA_BUS_FMT_YVYU8_2X8, V4L2_COLORSPACE_JPEG},134 {MEDIA_BUS_FMT_RGB565_2X8_LE, V4L2_COLORSPACE_SRGB},135 {MEDIA_BUS_FMT_RGB565_2X8_BE, V4L2_COLORSPACE_SRGB},136 {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE, V4L2_COLORSPACE_SRGB},137 {MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE, V4L2_COLORSPACE_SRGB},138 {MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE, V4L2_COLORSPACE_SRGB},139 {MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE, V4L2_COLORSPACE_SRGB},140 {MEDIA_BUS_FMT_SBGGR10_1X10, V4L2_COLORSPACE_SRGB},141};142 143struct rj54n1_clock_div {144 u8 ratio_tg; /* can be 0 or an odd number */145 u8 ratio_t;146 u8 ratio_r;147 u8 ratio_op;148 u8 ratio_o;149};150 151struct rj54n1 {152 struct v4l2_subdev subdev;153 struct v4l2_ctrl_handler hdl;154 struct clk *clk;155 struct gpio_desc *pwup_gpio;156 struct gpio_desc *enable_gpio;157 struct rj54n1_clock_div clk_div;158 const struct rj54n1_datafmt *fmt;159 struct v4l2_rect rect; /* Sensor window */160 unsigned int tgclk_mhz;161 bool auto_wb;162 unsigned short width; /* Output window */163 unsigned short height;164 unsigned short resize; /* Sensor * 1024 / resize = Output */165 unsigned short scale;166 u8 bank;167};168 169struct rj54n1_reg_val {170 u16 reg;171 u8 val;172};173 174static const struct rj54n1_reg_val bank_4[] = {175 {0x417, 0},176 {0x42c, 0},177 {0x42d, 0xf0},178 {0x42e, 0},179 {0x42f, 0x50},180 {0x430, 0xf5},181 {0x431, 0x16},182 {0x432, 0x20},183 {0x433, 0},184 {0x434, 0xc8},185 {0x43c, 8},186 {0x43e, 0x90},187 {0x445, 0x83},188 {0x4ba, 0x58},189 {0x4bb, 4},190 {0x4bc, 0x20},191 {0x4db, 4},192 {0x4fe, 2},193};194 195static const struct rj54n1_reg_val bank_5[] = {196 {0x514, 0},197 {0x516, 0},198 {0x518, 0},199 {0x51a, 0},200 {0x51d, 0xff},201 {0x56f, 0x28},202 {0x575, 0x40},203 {0x5bc, 0x48},204 {0x5c1, 6},205 {0x5e5, 0x11},206 {0x5e6, 0x43},207 {0x5e7, 0x33},208 {0x5e8, 0x21},209 {0x5e9, 0x30},210 {0x5ea, 0x0},211 {0x5eb, 0xa5},212 {0x5ec, 0xff},213 {0x5fe, 2},214};215 216static const struct rj54n1_reg_val bank_7[] = {217 {0x70a, 0},218 {0x714, 0xff},219 {0x715, 0xff},220 {0x716, 0x1f},221 {0x7FE, 2},222};223 224static const struct rj54n1_reg_val bank_8[] = {225 {0x800, 0x00},226 {0x801, 0x01},227 {0x802, 0x61},228 {0x805, 0x00},229 {0x806, 0x00},230 {0x807, 0x00},231 {0x808, 0x00},232 {0x809, 0x01},233 {0x80A, 0x61},234 {0x80B, 0x00},235 {0x80C, 0x01},236 {0x80D, 0x00},237 {0x80E, 0x00},238 {0x80F, 0x00},239 {0x810, 0x00},240 {0x811, 0x01},241 {0x812, 0x61},242 {0x813, 0x00},243 {0x814, 0x11},244 {0x815, 0x00},245 {0x816, 0x41},246 {0x817, 0x00},247 {0x818, 0x51},248 {0x819, 0x01},249 {0x81A, 0x1F},250 {0x81B, 0x00},251 {0x81C, 0x01},252 {0x81D, 0x00},253 {0x81E, 0x11},254 {0x81F, 0x00},255 {0x820, 0x41},256 {0x821, 0x00},257 {0x822, 0x51},258 {0x823, 0x00},259 {0x824, 0x00},260 {0x825, 0x00},261 {0x826, 0x47},262 {0x827, 0x01},263 {0x828, 0x4F},264 {0x829, 0x00},265 {0x82A, 0x00},266 {0x82B, 0x00},267 {0x82C, 0x30},268 {0x82D, 0x00},269 {0x82E, 0x40},270 {0x82F, 0x00},271 {0x830, 0xB3},272 {0x831, 0x00},273 {0x832, 0xE3},274 {0x833, 0x00},275 {0x834, 0x00},276 {0x835, 0x00},277 {0x836, 0x00},278 {0x837, 0x00},279 {0x838, 0x00},280 {0x839, 0x01},281 {0x83A, 0x61},282 {0x83B, 0x00},283 {0x83C, 0x01},284 {0x83D, 0x00},285 {0x83E, 0x00},286 {0x83F, 0x00},287 {0x840, 0x00},288 {0x841, 0x01},289 {0x842, 0x61},290 {0x843, 0x00},291 {0x844, 0x1D},292 {0x845, 0x00},293 {0x846, 0x00},294 {0x847, 0x00},295 {0x848, 0x00},296 {0x849, 0x01},297 {0x84A, 0x1F},298 {0x84B, 0x00},299 {0x84C, 0x05},300 {0x84D, 0x00},301 {0x84E, 0x19},302 {0x84F, 0x01},303 {0x850, 0x21},304 {0x851, 0x01},305 {0x852, 0x5D},306 {0x853, 0x00},307 {0x854, 0x00},308 {0x855, 0x00},309 {0x856, 0x19},310 {0x857, 0x01},311 {0x858, 0x21},312 {0x859, 0x00},313 {0x85A, 0x00},314 {0x85B, 0x00},315 {0x85C, 0x00},316 {0x85D, 0x00},317 {0x85E, 0x00},318 {0x85F, 0x00},319 {0x860, 0xB3},320 {0x861, 0x00},321 {0x862, 0xE3},322 {0x863, 0x00},323 {0x864, 0x00},324 {0x865, 0x00},325 {0x866, 0x00},326 {0x867, 0x00},327 {0x868, 0x00},328 {0x869, 0xE2},329 {0x86A, 0x00},330 {0x86B, 0x01},331 {0x86C, 0x06},332 {0x86D, 0x00},333 {0x86E, 0x00},334 {0x86F, 0x00},335 {0x870, 0x60},336 {0x871, 0x8C},337 {0x872, 0x10},338 {0x873, 0x00},339 {0x874, 0xE0},340 {0x875, 0x00},341 {0x876, 0x27},342 {0x877, 0x01},343 {0x878, 0x00},344 {0x879, 0x00},345 {0x87A, 0x00},346 {0x87B, 0x03},347 {0x87C, 0x00},348 {0x87D, 0x00},349 {0x87E, 0x00},350 {0x87F, 0x00},351 {0x880, 0x00},352 {0x881, 0x00},353 {0x882, 0x00},354 {0x883, 0x00},355 {0x884, 0x00},356 {0x885, 0x00},357 {0x886, 0xF8},358 {0x887, 0x00},359 {0x888, 0x03},360 {0x889, 0x00},361 {0x88A, 0x64},362 {0x88B, 0x00},363 {0x88C, 0x03},364 {0x88D, 0x00},365 {0x88E, 0xB1},366 {0x88F, 0x00},367 {0x890, 0x03},368 {0x891, 0x01},369 {0x892, 0x1D},370 {0x893, 0x00},371 {0x894, 0x03},372 {0x895, 0x01},373 {0x896, 0x4B},374 {0x897, 0x00},375 {0x898, 0xE5},376 {0x899, 0x00},377 {0x89A, 0x01},378 {0x89B, 0x00},379 {0x89C, 0x01},380 {0x89D, 0x04},381 {0x89E, 0xC8},382 {0x89F, 0x00},383 {0x8A0, 0x01},384 {0x8A1, 0x01},385 {0x8A2, 0x61},386 {0x8A3, 0x00},387 {0x8A4, 0x01},388 {0x8A5, 0x00},389 {0x8A6, 0x00},390 {0x8A7, 0x00},391 {0x8A8, 0x00},392 {0x8A9, 0x00},393 {0x8AA, 0x7F},394 {0x8AB, 0x03},395 {0x8AC, 0x00},396 {0x8AD, 0x00},397 {0x8AE, 0x00},398 {0x8AF, 0x00},399 {0x8B0, 0x00},400 {0x8B1, 0x00},401 {0x8B6, 0x00},402 {0x8B7, 0x01},403 {0x8B8, 0x00},404 {0x8B9, 0x00},405 {0x8BA, 0x02},406 {0x8BB, 0x00},407 {0x8BC, 0xFF},408 {0x8BD, 0x00},409 {0x8FE, 2},410};411 412static const struct rj54n1_reg_val bank_10[] = {413 {0x10bf, 0x69}414};415 416/* Clock dividers - these are default register values, divider = register + 1 */417static const struct rj54n1_clock_div clk_div = {418 .ratio_tg = 3 /* default: 5 */,419 .ratio_t = 4 /* default: 1 */,420 .ratio_r = 4 /* default: 0 */,421 .ratio_op = 1 /* default: 5 */,422 .ratio_o = 9 /* default: 0 */,423};424 425static struct rj54n1 *to_rj54n1(const struct i2c_client *client)426{427 return container_of(i2c_get_clientdata(client), struct rj54n1, subdev);428}429 430static int reg_read(struct i2c_client *client, const u16 reg)431{432 struct rj54n1 *rj54n1 = to_rj54n1(client);433 int ret;434 435 /* set bank */436 if (rj54n1->bank != reg >> 8) {437 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);438 ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);439 if (ret < 0)440 return ret;441 rj54n1->bank = reg >> 8;442 }443 return i2c_smbus_read_byte_data(client, reg & 0xff);444}445 446static int reg_write(struct i2c_client *client, const u16 reg,447 const u8 data)448{449 struct rj54n1 *rj54n1 = to_rj54n1(client);450 int ret;451 452 /* set bank */453 if (rj54n1->bank != reg >> 8) {454 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", 0xff, reg >> 8);455 ret = i2c_smbus_write_byte_data(client, 0xff, reg >> 8);456 if (ret < 0)457 return ret;458 rj54n1->bank = reg >> 8;459 }460 dev_dbg(&client->dev, "[0x%x] = 0x%x\n", reg & 0xff, data);461 return i2c_smbus_write_byte_data(client, reg & 0xff, data);462}463 464static int reg_set(struct i2c_client *client, const u16 reg,465 const u8 data, const u8 mask)466{467 int ret;468 469 ret = reg_read(client, reg);470 if (ret < 0)471 return ret;472 return reg_write(client, reg, (ret & ~mask) | (data & mask));473}474 475static int reg_write_multiple(struct i2c_client *client,476 const struct rj54n1_reg_val *rv, const int n)477{478 int i, ret;479 480 for (i = 0; i < n; i++) {481 ret = reg_write(client, rv->reg, rv->val);482 if (ret < 0)483 return ret;484 rv++;485 }486 487 return 0;488}489 490static int rj54n1_enum_mbus_code(struct v4l2_subdev *sd,491 struct v4l2_subdev_state *sd_state,492 struct v4l2_subdev_mbus_code_enum *code)493{494 if (code->pad || code->index >= ARRAY_SIZE(rj54n1_colour_fmts))495 return -EINVAL;496 497 code->code = rj54n1_colour_fmts[code->index].code;498 return 0;499}500 501static int rj54n1_s_stream(struct v4l2_subdev *sd, int enable)502{503 struct i2c_client *client = v4l2_get_subdevdata(sd);504 505 /* Switch between preview and still shot modes */506 return reg_set(client, RJ54N1_STILL_CONTROL, (!enable) << 7, 0x80);507}508 509static int rj54n1_set_rect(struct i2c_client *client,510 u16 reg_x, u16 reg_y, u16 reg_xy,511 u32 width, u32 height)512{513 int ret;514 515 ret = reg_write(client, reg_xy,516 ((width >> 4) & 0x70) |517 ((height >> 8) & 7));518 519 if (!ret)520 ret = reg_write(client, reg_x, width & 0xff);521 if (!ret)522 ret = reg_write(client, reg_y, height & 0xff);523 524 return ret;525}526 527/*528 * Some commands, specifically certain initialisation sequences, require529 * a commit operation.530 */531static int rj54n1_commit(struct i2c_client *client)532{533 int ret = reg_write(client, RJ54N1_INIT_START, 1);534 msleep(10);535 if (!ret)536 ret = reg_write(client, RJ54N1_INIT_START, 0);537 return ret;538}539 540static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,541 s32 *out_w, s32 *out_h);542 543static int rj54n1_set_selection(struct v4l2_subdev *sd,544 struct v4l2_subdev_state *sd_state,545 struct v4l2_subdev_selection *sel)546{547 struct i2c_client *client = v4l2_get_subdevdata(sd);548 struct rj54n1 *rj54n1 = to_rj54n1(client);549 const struct v4l2_rect *rect = &sel->r;550 int output_w, output_h, input_w = rect->width, input_h = rect->height;551 int ret;552 553 if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE ||554 sel->target != V4L2_SEL_TGT_CROP)555 return -EINVAL;556 557 /* arbitrary minimum width and height, edges unimportant */558 v4l_bound_align_image(&input_w, 8, RJ54N1_MAX_WIDTH, 0,559 &input_h, 8, RJ54N1_MAX_HEIGHT, 0, 0);560 561 output_w = (input_w * 1024 + rj54n1->resize / 2) / rj54n1->resize;562 output_h = (input_h * 1024 + rj54n1->resize / 2) / rj54n1->resize;563 564 dev_dbg(&client->dev, "Scaling for %dx%d : %u = %dx%d\n",565 input_w, input_h, rj54n1->resize, output_w, output_h);566 567 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);568 if (ret < 0)569 return ret;570 571 rj54n1->width = output_w;572 rj54n1->height = output_h;573 rj54n1->resize = ret;574 rj54n1->rect.width = input_w;575 rj54n1->rect.height = input_h;576 577 return 0;578}579 580static int rj54n1_get_selection(struct v4l2_subdev *sd,581 struct v4l2_subdev_state *sd_state,582 struct v4l2_subdev_selection *sel)583{584 struct i2c_client *client = v4l2_get_subdevdata(sd);585 struct rj54n1 *rj54n1 = to_rj54n1(client);586 587 if (sel->which != V4L2_SUBDEV_FORMAT_ACTIVE)588 return -EINVAL;589 590 switch (sel->target) {591 case V4L2_SEL_TGT_CROP_BOUNDS:592 sel->r.left = RJ54N1_COLUMN_SKIP;593 sel->r.top = RJ54N1_ROW_SKIP;594 sel->r.width = RJ54N1_MAX_WIDTH;595 sel->r.height = RJ54N1_MAX_HEIGHT;596 return 0;597 case V4L2_SEL_TGT_CROP:598 sel->r = rj54n1->rect;599 return 0;600 default:601 return -EINVAL;602 }603}604 605static int rj54n1_get_fmt(struct v4l2_subdev *sd,606 struct v4l2_subdev_state *sd_state,607 struct v4l2_subdev_format *format)608{609 struct v4l2_mbus_framefmt *mf = &format->format;610 struct i2c_client *client = v4l2_get_subdevdata(sd);611 struct rj54n1 *rj54n1 = to_rj54n1(client);612 613 if (format->pad)614 return -EINVAL;615 616 mf->code = rj54n1->fmt->code;617 mf->colorspace = rj54n1->fmt->colorspace;618 mf->ycbcr_enc = V4L2_YCBCR_ENC_601;619 mf->xfer_func = V4L2_XFER_FUNC_SRGB;620 mf->quantization = V4L2_QUANTIZATION_DEFAULT;621 mf->field = V4L2_FIELD_NONE;622 mf->width = rj54n1->width;623 mf->height = rj54n1->height;624 625 return 0;626}627 628/*629 * The actual geometry configuration routine. It scales the input window into630 * the output one, updates the window sizes and returns an error or the resize631 * coefficient on success. Note: we only use the "Fixed Scaling" on this camera.632 */633static int rj54n1_sensor_scale(struct v4l2_subdev *sd, s32 *in_w, s32 *in_h,634 s32 *out_w, s32 *out_h)635{636 struct i2c_client *client = v4l2_get_subdevdata(sd);637 struct rj54n1 *rj54n1 = to_rj54n1(client);638 unsigned int skip, resize, input_w = *in_w, input_h = *in_h,639 output_w = *out_w, output_h = *out_h;640 u16 inc_sel, wb_bit8, wb_left, wb_right, wb_top, wb_bottom;641 unsigned int peak, peak_50, peak_60;642 int ret;643 644 /*645 * We have a problem with crops, where the window is larger than 512x384646 * and output window is larger than a half of the input one. In this647 * case we have to either reduce the input window to equal or below648 * 512x384 or the output window to equal or below 1/2 of the input.649 */650 if (output_w > max(512U, input_w / 2)) {651 if (2 * output_w > RJ54N1_MAX_WIDTH) {652 input_w = RJ54N1_MAX_WIDTH;653 output_w = RJ54N1_MAX_WIDTH / 2;654 } else {655 input_w = output_w * 2;656 }657 658 dev_dbg(&client->dev, "Adjusted output width: in %u, out %u\n",659 input_w, output_w);660 }661 662 if (output_h > max(384U, input_h / 2)) {663 if (2 * output_h > RJ54N1_MAX_HEIGHT) {664 input_h = RJ54N1_MAX_HEIGHT;665 output_h = RJ54N1_MAX_HEIGHT / 2;666 } else {667 input_h = output_h * 2;668 }669 670 dev_dbg(&client->dev, "Adjusted output height: in %u, out %u\n",671 input_h, output_h);672 }673 674 /* Idea: use the read mode for snapshots, handle separate geometries */675 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_S_L,676 RJ54N1_Y_OUTPUT_SIZE_S_L,677 RJ54N1_XY_OUTPUT_SIZE_S_H, output_w, output_h);678 if (!ret)679 ret = rj54n1_set_rect(client, RJ54N1_X_OUTPUT_SIZE_P_L,680 RJ54N1_Y_OUTPUT_SIZE_P_L,681 RJ54N1_XY_OUTPUT_SIZE_P_H, output_w, output_h);682 683 if (ret < 0)684 return ret;685 686 if (output_w > input_w && output_h > input_h) {687 input_w = output_w;688 input_h = output_h;689 690 resize = 1024;691 } else {692 unsigned int resize_x, resize_y;693 resize_x = (input_w * 1024 + output_w / 2) / output_w;694 resize_y = (input_h * 1024 + output_h / 2) / output_h;695 696 /* We want max(resize_x, resize_y), check if it still fits */697 if (resize_x > resize_y &&698 (output_h * resize_x + 512) / 1024 > RJ54N1_MAX_HEIGHT)699 resize = (RJ54N1_MAX_HEIGHT * 1024 + output_h / 2) /700 output_h;701 else if (resize_y > resize_x &&702 (output_w * resize_y + 512) / 1024 > RJ54N1_MAX_WIDTH)703 resize = (RJ54N1_MAX_WIDTH * 1024 + output_w / 2) /704 output_w;705 else706 resize = max(resize_x, resize_y);707 708 /* Prohibited value ranges */709 switch (resize) {710 case 2040 ... 2047:711 resize = 2039;712 break;713 case 4080 ... 4095:714 resize = 4079;715 break;716 case 8160 ... 8191:717 resize = 8159;718 break;719 case 16320 ... 16384:720 resize = 16319;721 }722 }723 724 /* Set scaling */725 ret = reg_write(client, RJ54N1_RESIZE_HOLD_L, resize & 0xff);726 if (!ret)727 ret = reg_write(client, RJ54N1_RESIZE_HOLD_H, resize >> 8);728 729 if (ret < 0)730 return ret;731 732 /*733 * Configure a skipping bitmask. The sensor will select a skipping value734 * among set bits automatically. This is very unclear in the datasheet735 * too. I was told, in this register one enables all skipping values,736 * that are required for a specific resize, and the camera selects737 * automatically, which ones to use. But it is unclear how to identify,738 * which cropping values are needed. Secondly, why don't we just set all739 * bits and let the camera choose? Would it increase processing time and740 * reduce the framerate? Using 0xfffc for INC_USE_SEL doesn't seem to741 * improve the image quality or stability for larger frames (see comment742 * above), but I didn't check the framerate.743 */744 skip = min(resize / 1024, 15U);745 746 inc_sel = 1 << skip;747 748 if (inc_sel <= 2)749 inc_sel = 0xc;750 else if (resize & 1023 && skip < 15)751 inc_sel |= 1 << (skip + 1);752 753 ret = reg_write(client, RJ54N1_INC_USE_SEL_L, inc_sel & 0xfc);754 if (!ret)755 ret = reg_write(client, RJ54N1_INC_USE_SEL_H, inc_sel >> 8);756 757 if (!rj54n1->auto_wb) {758 /* Auto white balance window */759 wb_left = output_w / 16;760 wb_right = (3 * output_w / 4 - 3) / 4;761 wb_top = output_h / 16;762 wb_bottom = (3 * output_h / 4 - 3) / 4;763 wb_bit8 = ((wb_left >> 2) & 0x40) | ((wb_top >> 4) & 0x10) |764 ((wb_right >> 6) & 4) | ((wb_bottom >> 8) & 1);765 766 if (!ret)767 ret = reg_write(client, RJ54N1_BIT8_WB, wb_bit8);768 if (!ret)769 ret = reg_write(client, RJ54N1_HCAPS_WB, wb_left);770 if (!ret)771 ret = reg_write(client, RJ54N1_VCAPS_WB, wb_top);772 if (!ret)773 ret = reg_write(client, RJ54N1_HCAPE_WB, wb_right);774 if (!ret)775 ret = reg_write(client, RJ54N1_VCAPE_WB, wb_bottom);776 }777 778 /* Antiflicker */779 peak = 12 * RJ54N1_MAX_WIDTH * (1 << 14) * resize / rj54n1->tgclk_mhz /780 10000;781 peak_50 = peak / 6;782 peak_60 = peak / 5;783 784 if (!ret)785 ret = reg_write(client, RJ54N1_PEAK_H,786 ((peak_50 >> 4) & 0xf0) | (peak_60 >> 8));787 if (!ret)788 ret = reg_write(client, RJ54N1_PEAK_50, peak_50);789 if (!ret)790 ret = reg_write(client, RJ54N1_PEAK_60, peak_60);791 if (!ret)792 ret = reg_write(client, RJ54N1_PEAK_DIFF, peak / 150);793 794 /* Start resizing */795 if (!ret)796 ret = reg_write(client, RJ54N1_RESIZE_CONTROL,797 RESIZE_HOLD_SEL | RESIZE_GO | 1);798 799 if (ret < 0)800 return ret;801 802 /* Constant taken from manufacturer's example */803 msleep(230);804 805 ret = reg_write(client, RJ54N1_RESIZE_CONTROL, RESIZE_HOLD_SEL | 1);806 if (ret < 0)807 return ret;808 809 *in_w = (output_w * resize + 512) / 1024;810 *in_h = (output_h * resize + 512) / 1024;811 *out_w = output_w;812 *out_h = output_h;813 814 dev_dbg(&client->dev, "Scaled for %dx%d : %u = %ux%u, skip %u\n",815 *in_w, *in_h, resize, output_w, output_h, skip);816 817 return resize;818}819 820static int rj54n1_set_clock(struct i2c_client *client)821{822 struct rj54n1 *rj54n1 = to_rj54n1(client);823 int ret;824 825 /* Enable external clock */826 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK | SOFT_STDBY);827 /* Leave stand-by. Note: use this when implementing suspend / resume */828 if (!ret)829 ret = reg_write(client, RJ54N1_RESET_STANDBY, E_EXCLK);830 831 if (!ret)832 ret = reg_write(client, RJ54N1_PLL_L, PLL_L);833 if (!ret)834 ret = reg_write(client, RJ54N1_PLL_N, PLL_N);835 836 /* TGCLK dividers */837 if (!ret)838 ret = reg_write(client, RJ54N1_RATIO_TG,839 rj54n1->clk_div.ratio_tg);840 if (!ret)841 ret = reg_write(client, RJ54N1_RATIO_T,842 rj54n1->clk_div.ratio_t);843 if (!ret)844 ret = reg_write(client, RJ54N1_RATIO_R,845 rj54n1->clk_div.ratio_r);846 847 /* Enable TGCLK & RAMP */848 if (!ret)849 ret = reg_write(client, RJ54N1_RAMP_TGCLK_EN, 3);850 851 /* Disable clock output */852 if (!ret)853 ret = reg_write(client, RJ54N1_OCLK_DSP, 0);854 855 /* Set divisors */856 if (!ret)857 ret = reg_write(client, RJ54N1_RATIO_OP,858 rj54n1->clk_div.ratio_op);859 if (!ret)860 ret = reg_write(client, RJ54N1_RATIO_O,861 rj54n1->clk_div.ratio_o);862 863 /* Enable OCLK */864 if (!ret)865 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);866 867 /* Use PLL for Timing Generator, write 2 to reserved bits */868 if (!ret)869 ret = reg_write(client, RJ54N1_TG_BYPASS, 2);870 871 /* Take sensor out of reset */872 if (!ret)873 ret = reg_write(client, RJ54N1_RESET_STANDBY,874 E_EXCLK | SEN_RSTX);875 /* Enable PLL */876 if (!ret)877 ret = reg_write(client, RJ54N1_PLL_EN, 1);878 879 /* Wait for PLL to stabilise */880 msleep(10);881 882 /* Enable clock to frequency divider */883 if (!ret)884 ret = reg_write(client, RJ54N1_CLK_RST, 1);885 886 if (!ret)887 ret = reg_read(client, RJ54N1_CLK_RST);888 if (ret != 1) {889 dev_err(&client->dev,890 "Resetting RJ54N1CB0C clock failed: %d!\n", ret);891 return -EIO;892 }893 894 /* Start the PLL */895 ret = reg_set(client, RJ54N1_OCLK_DSP, 1, 1);896 897 /* Enable OCLK */898 if (!ret)899 ret = reg_write(client, RJ54N1_OCLK_SEL_EN, 1);900 901 return ret;902}903 904static int rj54n1_reg_init(struct i2c_client *client)905{906 struct rj54n1 *rj54n1 = to_rj54n1(client);907 int ret = rj54n1_set_clock(client);908 909 if (!ret)910 ret = reg_write_multiple(client, bank_7, ARRAY_SIZE(bank_7));911 if (!ret)912 ret = reg_write_multiple(client, bank_10, ARRAY_SIZE(bank_10));913 914 /* Set binning divisors */915 if (!ret)916 ret = reg_write(client, RJ54N1_SCALE_1_2_LEV, 3 | (7 << 4));917 if (!ret)918 ret = reg_write(client, RJ54N1_SCALE_4_LEV, 0xf);919 920 /* Switch to fixed resize mode */921 if (!ret)922 ret = reg_write(client, RJ54N1_RESIZE_CONTROL,923 RESIZE_HOLD_SEL | 1);924 925 /* Set gain */926 if (!ret)927 ret = reg_write(client, RJ54N1_Y_GAIN, 0x84);928 929 /*930 * Mirror the image back: default is upside down and left-to-right...931 * Set manual preview / still shot switching932 */933 if (!ret)934 ret = reg_write(client, RJ54N1_MIRROR_STILL_MODE, 0x27);935 936 if (!ret)937 ret = reg_write_multiple(client, bank_4, ARRAY_SIZE(bank_4));938 939 /* Auto exposure area */940 if (!ret)941 ret = reg_write(client, RJ54N1_EXPOSURE_CONTROL, 0x80);942 /* Check current auto WB config */943 if (!ret)944 ret = reg_read(client, RJ54N1_WB_SEL_WEIGHT_I);945 if (ret >= 0) {946 rj54n1->auto_wb = ret & 0x80;947 ret = reg_write_multiple(client, bank_5, ARRAY_SIZE(bank_5));948 }949 if (!ret)950 ret = reg_write_multiple(client, bank_8, ARRAY_SIZE(bank_8));951 952 if (!ret)953 ret = reg_write(client, RJ54N1_RESET_STANDBY,954 E_EXCLK | DSP_RSTX | SEN_RSTX);955 956 /* Commit init */957 if (!ret)958 ret = rj54n1_commit(client);959 960 /* Take DSP, TG, sensor out of reset */961 if (!ret)962 ret = reg_write(client, RJ54N1_RESET_STANDBY,963 E_EXCLK | DSP_RSTX | TG_RSTX | SEN_RSTX);964 965 /* Start register update? Same register as 0x?FE in many bank_* sets */966 if (!ret)967 ret = reg_write(client, RJ54N1_FWFLG, 2);968 969 /* Constant taken from manufacturer's example */970 msleep(700);971 972 return ret;973}974 975static int rj54n1_set_fmt(struct v4l2_subdev *sd,976 struct v4l2_subdev_state *sd_state,977 struct v4l2_subdev_format *format)978{979 struct v4l2_mbus_framefmt *mf = &format->format;980 struct i2c_client *client = v4l2_get_subdevdata(sd);981 struct rj54n1 *rj54n1 = to_rj54n1(client);982 const struct rj54n1_datafmt *fmt;983 int output_w, output_h, max_w, max_h,984 input_w = rj54n1->rect.width, input_h = rj54n1->rect.height;985 int align = mf->code == MEDIA_BUS_FMT_SBGGR10_1X10 ||986 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE ||987 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE ||988 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE ||989 mf->code == MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE;990 int ret;991 992 if (format->pad)993 return -EINVAL;994 995 dev_dbg(&client->dev, "%s: code = %d, width = %u, height = %u\n",996 __func__, mf->code, mf->width, mf->height);997 998 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,999 ARRAY_SIZE(rj54n1_colour_fmts));1000 if (!fmt) {1001 fmt = rj54n1->fmt;1002 mf->code = fmt->code;1003 }1004 1005 mf->field = V4L2_FIELD_NONE;1006 mf->colorspace = fmt->colorspace;1007 1008 v4l_bound_align_image(&mf->width, 112, RJ54N1_MAX_WIDTH, align,1009 &mf->height, 84, RJ54N1_MAX_HEIGHT, align, 0);1010 1011 if (format->which == V4L2_SUBDEV_FORMAT_TRY)1012 return 0;1013 1014 /*1015 * Verify if the sensor has just been powered on. TODO: replace this1016 * with proper PM, when a suitable API is available.1017 */1018 ret = reg_read(client, RJ54N1_RESET_STANDBY);1019 if (ret < 0)1020 return ret;1021 1022 if (!(ret & E_EXCLK)) {1023 ret = rj54n1_reg_init(client);1024 if (ret < 0)1025 return ret;1026 }1027 1028 /* RA_SEL_UL is only relevant for raw modes, ignored otherwise. */1029 switch (mf->code) {1030 case MEDIA_BUS_FMT_YUYV8_2X8:1031 ret = reg_write(client, RJ54N1_OUT_SEL, 0);1032 if (!ret)1033 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);1034 break;1035 case MEDIA_BUS_FMT_YVYU8_2X8:1036 ret = reg_write(client, RJ54N1_OUT_SEL, 0);1037 if (!ret)1038 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);1039 break;1040 case MEDIA_BUS_FMT_RGB565_2X8_LE:1041 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);1042 if (!ret)1043 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);1044 break;1045 case MEDIA_BUS_FMT_RGB565_2X8_BE:1046 ret = reg_write(client, RJ54N1_OUT_SEL, 0x11);1047 if (!ret)1048 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);1049 break;1050 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_LE:1051 ret = reg_write(client, RJ54N1_OUT_SEL, 4);1052 if (!ret)1053 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);1054 if (!ret)1055 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);1056 break;1057 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_LE:1058 ret = reg_write(client, RJ54N1_OUT_SEL, 4);1059 if (!ret)1060 ret = reg_set(client, RJ54N1_BYTE_SWAP, 8, 8);1061 if (!ret)1062 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);1063 break;1064 case MEDIA_BUS_FMT_SBGGR10_2X8_PADLO_BE:1065 ret = reg_write(client, RJ54N1_OUT_SEL, 4);1066 if (!ret)1067 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);1068 if (!ret)1069 ret = reg_write(client, RJ54N1_RA_SEL_UL, 0);1070 break;1071 case MEDIA_BUS_FMT_SBGGR10_2X8_PADHI_BE:1072 ret = reg_write(client, RJ54N1_OUT_SEL, 4);1073 if (!ret)1074 ret = reg_set(client, RJ54N1_BYTE_SWAP, 0, 8);1075 if (!ret)1076 ret = reg_write(client, RJ54N1_RA_SEL_UL, 8);1077 break;1078 case MEDIA_BUS_FMT_SBGGR10_1X10:1079 ret = reg_write(client, RJ54N1_OUT_SEL, 5);1080 break;1081 default:1082 ret = -EINVAL;1083 }1084 1085 /* Special case: a raw mode with 10 bits of data per clock tick */1086 if (!ret)1087 ret = reg_set(client, RJ54N1_OCLK_SEL_EN,1088 (mf->code == MEDIA_BUS_FMT_SBGGR10_1X10) << 1, 2);1089 1090 if (ret < 0)1091 return ret;1092 1093 /* Supported scales 1:1 >= scale > 1:16 */1094 max_w = mf->width * (16 * 1024 - 1) / 1024;1095 if (input_w > max_w)1096 input_w = max_w;1097 max_h = mf->height * (16 * 1024 - 1) / 1024;1098 if (input_h > max_h)1099 input_h = max_h;1100 1101 output_w = mf->width;1102 output_h = mf->height;1103 1104 ret = rj54n1_sensor_scale(sd, &input_w, &input_h, &output_w, &output_h);1105 if (ret < 0)1106 return ret;1107 1108 fmt = rj54n1_find_datafmt(mf->code, rj54n1_colour_fmts,1109 ARRAY_SIZE(rj54n1_colour_fmts));1110 1111 rj54n1->fmt = fmt;1112 rj54n1->resize = ret;1113 rj54n1->rect.width = input_w;1114 rj54n1->rect.height = input_h;1115 rj54n1->width = output_w;1116 rj54n1->height = output_h;1117 1118 mf->width = output_w;1119 mf->height = output_h;1120 mf->field = V4L2_FIELD_NONE;1121 mf->colorspace = fmt->colorspace;1122 1123 return 0;1124}1125 1126#ifdef CONFIG_VIDEO_ADV_DEBUG1127static int rj54n1_g_register(struct v4l2_subdev *sd,1128 struct v4l2_dbg_register *reg)1129{1130 struct i2c_client *client = v4l2_get_subdevdata(sd);1131 1132 if (reg->reg < 0x400 || reg->reg > 0x1fff)1133 /* Registers > 0x0800 are only available from Sharp support */1134 return -EINVAL;1135 1136 reg->size = 1;1137 reg->val = reg_read(client, reg->reg);1138 1139 if (reg->val > 0xff)1140 return -EIO;1141 1142 return 0;1143}1144 1145static int rj54n1_s_register(struct v4l2_subdev *sd,1146 const struct v4l2_dbg_register *reg)1147{1148 struct i2c_client *client = v4l2_get_subdevdata(sd);1149 1150 if (reg->reg < 0x400 || reg->reg > 0x1fff)1151 /* Registers >= 0x0800 are only available from Sharp support */1152 return -EINVAL;1153 1154 if (reg_write(client, reg->reg, reg->val) < 0)1155 return -EIO;1156 1157 return 0;1158}1159#endif1160 1161static int rj54n1_s_power(struct v4l2_subdev *sd, int on)1162{1163 struct i2c_client *client = v4l2_get_subdevdata(sd);1164 struct rj54n1 *rj54n1 = to_rj54n1(client);1165 1166 if (on) {1167 if (rj54n1->pwup_gpio)1168 gpiod_set_value(rj54n1->pwup_gpio, 1);1169 if (rj54n1->enable_gpio)1170 gpiod_set_value(rj54n1->enable_gpio, 1);1171 1172 msleep(1);1173 1174 return clk_prepare_enable(rj54n1->clk);1175 }1176 1177 clk_disable_unprepare(rj54n1->clk);1178 1179 if (rj54n1->enable_gpio)1180 gpiod_set_value(rj54n1->enable_gpio, 0);1181 if (rj54n1->pwup_gpio)1182 gpiod_set_value(rj54n1->pwup_gpio, 0);1183 1184 return 0;1185}1186 1187static int rj54n1_s_ctrl(struct v4l2_ctrl *ctrl)1188{1189 struct rj54n1 *rj54n1 = container_of(ctrl->handler, struct rj54n1, hdl);1190 struct v4l2_subdev *sd = &rj54n1->subdev;1191 struct i2c_client *client = v4l2_get_subdevdata(sd);1192 int data;1193 1194 switch (ctrl->id) {1195 case V4L2_CID_VFLIP:1196 if (ctrl->val)1197 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 1);1198 else1199 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 1, 1);1200 if (data < 0)1201 return -EIO;1202 return 0;1203 case V4L2_CID_HFLIP:1204 if (ctrl->val)1205 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 0, 2);1206 else1207 data = reg_set(client, RJ54N1_MIRROR_STILL_MODE, 2, 2);1208 if (data < 0)1209 return -EIO;1210 return 0;1211 case V4L2_CID_GAIN:1212 if (reg_write(client, RJ54N1_Y_GAIN, ctrl->val * 2) < 0)1213 return -EIO;1214 return 0;1215 case V4L2_CID_AUTO_WHITE_BALANCE:1216 /* Auto WB area - whole image */1217 if (reg_set(client, RJ54N1_WB_SEL_WEIGHT_I, ctrl->val << 7,1218 0x80) < 0)1219 return -EIO;1220 rj54n1->auto_wb = ctrl->val;1221 return 0;1222 }1223 1224 return -EINVAL;1225}1226 1227static const struct v4l2_ctrl_ops rj54n1_ctrl_ops = {1228 .s_ctrl = rj54n1_s_ctrl,1229};1230 1231static const struct v4l2_subdev_core_ops rj54n1_subdev_core_ops = {1232#ifdef CONFIG_VIDEO_ADV_DEBUG1233 .g_register = rj54n1_g_register,1234 .s_register = rj54n1_s_register,1235#endif1236 .s_power = rj54n1_s_power,1237};1238 1239static const struct v4l2_subdev_video_ops rj54n1_subdev_video_ops = {1240 .s_stream = rj54n1_s_stream,1241};1242 1243static const struct v4l2_subdev_pad_ops rj54n1_subdev_pad_ops = {1244 .enum_mbus_code = rj54n1_enum_mbus_code,1245 .get_selection = rj54n1_get_selection,1246 .set_selection = rj54n1_set_selection,1247 .get_fmt = rj54n1_get_fmt,1248 .set_fmt = rj54n1_set_fmt,1249};1250 1251static const struct v4l2_subdev_ops rj54n1_subdev_ops = {1252 .core = &rj54n1_subdev_core_ops,1253 .video = &rj54n1_subdev_video_ops,1254 .pad = &rj54n1_subdev_pad_ops,1255};1256 1257/*1258 * Interface active, can use i2c. If it fails, it can indeed mean, that1259 * this wasn't our capture interface, so, we wait for the right one1260 */1261static int rj54n1_video_probe(struct i2c_client *client,1262 struct rj54n1_pdata *priv)1263{1264 struct rj54n1 *rj54n1 = to_rj54n1(client);1265 int data1, data2;1266 int ret;1267 1268 ret = rj54n1_s_power(&rj54n1->subdev, 1);1269 if (ret < 0)1270 return ret;1271 1272 /* Read out the chip version register */1273 data1 = reg_read(client, RJ54N1_DEV_CODE);1274 data2 = reg_read(client, RJ54N1_DEV_CODE2);1275 1276 if (data1 != 0x51 || data2 != 0x10) {1277 ret = -ENODEV;1278 dev_info(&client->dev, "No RJ54N1CB0C found, read 0x%x:0x%x\n",1279 data1, data2);1280 goto done;1281 }1282 1283 /* Configure IOCTL polarity from the platform data: 0 or 1 << 7. */1284 ret = reg_write(client, RJ54N1_IOC, priv->ioctl_high << 7);1285 if (ret < 0)1286 goto done;1287 1288 dev_info(&client->dev, "Detected a RJ54N1CB0C chip ID 0x%x:0x%x\n",1289 data1, data2);1290 1291 ret = v4l2_ctrl_handler_setup(&rj54n1->hdl);1292 1293done:1294 rj54n1_s_power(&rj54n1->subdev, 0);1295 return ret;1296}1297 1298static int rj54n1_probe(struct i2c_client *client)1299{1300 struct rj54n1 *rj54n1;1301 struct i2c_adapter *adapter = client->adapter;1302 struct rj54n1_pdata *rj54n1_priv;1303 int ret;1304 1305 if (!client->dev.platform_data) {1306 dev_err(&client->dev, "RJ54N1CB0C: missing platform data!\n");1307 return -EINVAL;1308 }1309 1310 rj54n1_priv = client->dev.platform_data;1311 1312 if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {1313 dev_warn(&adapter->dev,1314 "I2C-Adapter doesn't support I2C_FUNC_SMBUS_BYTE\n");1315 return -EIO;1316 }1317 1318 rj54n1 = devm_kzalloc(&client->dev, sizeof(struct rj54n1), GFP_KERNEL);1319 if (!rj54n1)1320 return -ENOMEM;1321 1322 v4l2_i2c_subdev_init(&rj54n1->subdev, client, &rj54n1_subdev_ops);1323 v4l2_ctrl_handler_init(&rj54n1->hdl, 4);1324 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,1325 V4L2_CID_VFLIP, 0, 1, 1, 0);1326 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,1327 V4L2_CID_HFLIP, 0, 1, 1, 0);1328 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,1329 V4L2_CID_GAIN, 0, 127, 1, 66);1330 v4l2_ctrl_new_std(&rj54n1->hdl, &rj54n1_ctrl_ops,1331 V4L2_CID_AUTO_WHITE_BALANCE, 0, 1, 1, 1);1332 rj54n1->subdev.ctrl_handler = &rj54n1->hdl;1333 if (rj54n1->hdl.error)1334 return rj54n1->hdl.error;1335 1336 rj54n1->clk_div = clk_div;1337 rj54n1->rect.left = RJ54N1_COLUMN_SKIP;1338 rj54n1->rect.top = RJ54N1_ROW_SKIP;1339 rj54n1->rect.width = RJ54N1_MAX_WIDTH;1340 rj54n1->rect.height = RJ54N1_MAX_HEIGHT;1341 rj54n1->width = RJ54N1_MAX_WIDTH;1342 rj54n1->height = RJ54N1_MAX_HEIGHT;1343 rj54n1->fmt = &rj54n1_colour_fmts[0];1344 rj54n1->resize = 1024;1345 rj54n1->tgclk_mhz = (rj54n1_priv->mclk_freq / PLL_L * PLL_N) /1346 (clk_div.ratio_tg + 1) / (clk_div.ratio_t + 1);1347 1348 rj54n1->clk = clk_get(&client->dev, NULL);1349 if (IS_ERR(rj54n1->clk)) {1350 ret = PTR_ERR(rj54n1->clk);1351 goto err_free_ctrl;1352 }1353 1354 rj54n1->pwup_gpio = gpiod_get_optional(&client->dev, "powerup",1355 GPIOD_OUT_LOW);1356 if (IS_ERR(rj54n1->pwup_gpio)) {1357 dev_info(&client->dev, "Unable to get GPIO \"powerup\": %ld\n",1358 PTR_ERR(rj54n1->pwup_gpio));1359 ret = PTR_ERR(rj54n1->pwup_gpio);1360 goto err_clk_put;1361 }1362 1363 rj54n1->enable_gpio = gpiod_get_optional(&client->dev, "enable",1364 GPIOD_OUT_LOW);1365 if (IS_ERR(rj54n1->enable_gpio)) {1366 dev_info(&client->dev, "Unable to get GPIO \"enable\": %ld\n",1367 PTR_ERR(rj54n1->enable_gpio));1368 ret = PTR_ERR(rj54n1->enable_gpio);1369 goto err_gpio_put;1370 }1371 1372 ret = rj54n1_video_probe(client, rj54n1_priv);1373 if (ret < 0)1374 goto err_gpio_put;1375 1376 ret = v4l2_async_register_subdev(&rj54n1->subdev);1377 if (ret)1378 goto err_gpio_put;1379 1380 return 0;1381 1382err_gpio_put:1383 if (rj54n1->enable_gpio)1384 gpiod_put(rj54n1->enable_gpio);1385 1386 if (rj54n1->pwup_gpio)1387 gpiod_put(rj54n1->pwup_gpio);1388 1389err_clk_put:1390 clk_put(rj54n1->clk);1391 1392err_free_ctrl:1393 v4l2_ctrl_handler_free(&rj54n1->hdl);1394 1395 return ret;1396}1397 1398static void rj54n1_remove(struct i2c_client *client)1399{1400 struct rj54n1 *rj54n1 = to_rj54n1(client);1401 1402 if (rj54n1->enable_gpio)1403 gpiod_put(rj54n1->enable_gpio);1404 if (rj54n1->pwup_gpio)1405 gpiod_put(rj54n1->pwup_gpio);1406 1407 clk_put(rj54n1->clk);1408 v4l2_ctrl_handler_free(&rj54n1->hdl);1409 v4l2_async_unregister_subdev(&rj54n1->subdev);1410}1411 1412static const struct i2c_device_id rj54n1_id[] = {1413 { "rj54n1cb0c" },1414 { }1415};1416MODULE_DEVICE_TABLE(i2c, rj54n1_id);1417 1418static struct i2c_driver rj54n1_i2c_driver = {1419 .driver = {1420 .name = "rj54n1cb0c",1421 },1422 .probe = rj54n1_probe,1423 .remove = rj54n1_remove,1424 .id_table = rj54n1_id,1425};1426 1427module_i2c_driver(rj54n1_i2c_driver);1428 1429MODULE_DESCRIPTION("Sharp RJ54N1CB0C Camera driver");1430MODULE_AUTHOR("Guennadi Liakhovetski <g.liakhovetski@gmx.de>");1431MODULE_LICENSE("GPL v2");1432