// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2021 Purism SPC
#include <linux/unaligned.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/pm.h>
#include <linux/property.h>
#include <linux/regulator/consumer.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#define HI846_MEDIA_BUS_FORMAT MEDIA_BUS_FMT_SGBRG10_1X10
#define HI846_RGB_DEPTH 10
/* Frame length lines / vertical timings */
#define HI846_REG_FLL 0x0006
#define HI846_FLL_MAX 0xffff
/* Horizontal timing */
#define HI846_REG_LLP 0x0008
#define HI846_LINE_LENGTH 3800
#define HI846_REG_BINNING_MODE 0x000c
#define HI846_REG_IMAGE_ORIENTATION 0x000e
#define HI846_REG_UNKNOWN_0022 0x0022
#define HI846_REG_Y_ADDR_START_VACT_H 0x0026
#define HI846_REG_Y_ADDR_START_VACT_L 0x0027
#define HI846_REG_UNKNOWN_0028 0x0028
#define HI846_REG_Y_ADDR_END_VACT_H 0x002c
#define HI846_REG_Y_ADDR_END_VACT_L 0x002d
#define HI846_REG_Y_ODD_INC_FOBP 0x002e
#define HI846_REG_Y_EVEN_INC_FOBP 0x002f
#define HI846_REG_Y_ODD_INC_VACT 0x0032
#define HI846_REG_Y_EVEN_INC_VACT 0x0033
#define HI846_REG_GROUPED_PARA_HOLD 0x0046
#define HI846_REG_TG_ENABLE 0x004c
#define HI846_REG_UNKNOWN_005C 0x005c
#define HI846_REG_UNKNOWN_006A 0x006a
/*
* Long exposure time. Actually, exposure is a 20 bit value that
* includes the lower 4 bits of 0x0073 too. Only 16 bits are used
* right now
*/
#define HI846_REG_EXPOSURE 0x0074
#define HI846_EXPOSURE_MIN 6
#define HI846_EXPOSURE_MAX_MARGIN 2
#define HI846_EXPOSURE_STEP 1
/* Analog gain controls from sensor */
#define HI846_REG_ANALOG_GAIN 0x0077
#define HI846_ANAL_GAIN_MIN 0
#define HI846_ANAL_GAIN_MAX 240
#define HI846_ANAL_GAIN_STEP 8
/* Digital gain controls from sensor */
#define HI846_REG_MWB_GR_GAIN_H 0x0078
#define HI846_REG_MWB_GR_GAIN_L 0x0079
#define HI846_REG_MWB_GB_GAIN_H 0x007a
#define HI846_REG_MWB_GB_GAIN_L 0x007b
#define HI846_REG_MWB_R_GAIN_H 0x007c
#define HI846_REG_MWB_R_GAIN_L 0x007d
#define HI846_REG_MWB_B_GAIN_H 0x007e
#define HI846_REG_MWB_B_GAIN_L 0x007f
#define HI846_DGTL_GAIN_MIN 512
#define HI846_DGTL_GAIN_MAX 8191
#define HI846_DGTL_GAIN_STEP 1
#define HI846_DGTL_GAIN_DEFAULT 512
#define HI846_REG_X_ADDR_START_HACT_H 0x0120
#define HI846_REG_X_ADDR_END_HACT_H 0x0122
#define HI846_REG_UNKNOWN_012A 0x012a
#define HI846_REG_UNKNOWN_0200 0x0200
#define HI846_REG_UNKNOWN_021C 0x021c
#define HI846_REG_UNKNOWN_021E 0x021e
#define HI846_REG_UNKNOWN_0402 0x0402
#define HI846_REG_UNKNOWN_0404 0x0404
#define HI846_REG_UNKNOWN_0408 0x0408
#define HI846_REG_UNKNOWN_0410 0x0410
#define HI846_REG_UNKNOWN_0412 0x0412
#define HI846_REG_UNKNOWN_0414 0x0414
#define HI846_REG_UNKNOWN_0418 0x0418
#define HI846_REG_UNKNOWN_051E 0x051e
/* Formatter */
#define HI846_REG_X_START_H 0x0804
#define HI846_REG_X_START_L 0x0805
/* MIPI */
#define HI846_REG_UNKNOWN_0900 0x0900
#define HI846_REG_MIPI_TX_OP_EN 0x0901
#define HI846_REG_MIPI_TX_OP_MODE 0x0902
#define HI846_RAW8 BIT(5)
#define HI846_REG_UNKNOWN_090C 0x090c
#define HI846_REG_UNKNOWN_090E 0x090e
#define HI846_REG_UNKNOWN_0914 0x0914
#define HI846_REG_TLPX 0x0915
#define HI846_REG_TCLK_PREPARE 0x0916
#define HI846_REG_TCLK_ZERO 0x0917
#define HI846_REG_UNKNOWN_0918 0x0918
#define HI846_REG_THS_PREPARE 0x0919
#define HI846_REG_THS_ZERO 0x091a
#define HI846_REG_THS_TRAIL 0x091b
#define HI846_REG_TCLK_POST 0x091c
#define HI846_REG_TCLK_TRAIL_MIN 0x091d
#define HI846_REG_UNKNOWN_091E 0x091e
#define HI846_REG_UNKNOWN_0954 0x0954
#define HI846_REG_UNKNOWN_0956 0x0956
#define HI846_REG_UNKNOWN_0958 0x0958
#define HI846_REG_UNKNOWN_095A 0x095a
/* ISP Common */
#define HI846_REG_MODE_SELECT 0x0a00
#define HI846_MODE_STANDBY 0x00
#define HI846_MODE_STREAMING 0x01
#define HI846_REG_FAST_STANDBY_MODE 0x0a02
#define HI846_REG_ISP_EN_H 0x0a04
/* Test Pattern Control */
#define HI846_REG_ISP 0x0a05
#define HI846_REG_ISP_TPG_EN 0x01
#define HI846_REG_TEST_PATTERN 0x020a /* 1-9 */
#define HI846_REG_UNKNOWN_0A0C 0x0a0c
/* Windowing */
#define HI846_REG_X_OUTPUT_SIZE_H 0x0a12
#define HI846_REG_X_OUTPUT_SIZE_L 0x0a13
#define HI846_REG_Y_OUTPUT_SIZE_H 0x0a14
#define HI846_REG_Y_OUTPUT_SIZE_L 0x0a15
/* ISP Common */
#define HI846_REG_PEDESTAL_EN 0x0a1a
#define HI846_REG_UNKNOWN_0A1E 0x0a1e
/* Horizontal Binning Mode */
#define HI846_REG_HBIN_MODE 0x0a22
#define HI846_REG_UNKNOWN_0A24 0x0a24
#define HI846_REG_UNKNOWN_0B02 0x0b02
#define HI846_REG_UNKNOWN_0B10 0x0b10
#define HI846_REG_UNKNOWN_0B12 0x0b12
#define HI846_REG_UNKNOWN_0B14 0x0b14
/* BLC (Black Level Calibration) */
#define HI846_REG_BLC_CTL0 0x0c00
#define HI846_REG_UNKNOWN_0C06 0x0c06
#define HI846_REG_UNKNOWN_0C10 0x0c10
#define HI846_REG_UNKNOWN_0C12 0x0c12
#define HI846_REG_UNKNOWN_0C14 0x0c14
#define HI846_REG_UNKNOWN_0C16 0x0c16
#define HI846_REG_UNKNOWN_0E04 0x0e04
#define HI846_REG_CHIP_ID_L 0x0f16
#define HI846_REG_CHIP_ID_H 0x0f17
#define HI846_CHIP_ID_L 0x46
#define HI846_CHIP_ID_H 0x08
#define HI846_REG_UNKNOWN_0F04 0x0f04
#define HI846_REG_UNKNOWN_0F08 0x0f08
/* PLL */
#define HI846_REG_PLL_CFG_MIPI2_H 0x0f2a
#define HI846_REG_PLL_CFG_MIPI2_L 0x0f2b
#define HI846_REG_UNKNOWN_0F30 0x0f30
#define HI846_REG_PLL_CFG_RAMP1_H 0x0f32
#define HI846_REG_UNKNOWN_0F36 0x0f36
#define HI846_REG_PLL_CFG_MIPI1_H 0x0f38
#define HI846_REG_UNKNOWN_2008 0x2008
#define HI846_REG_UNKNOWN_326E 0x326e
struct hi846_reg {
u16 address;
u16 val;
};
struct hi846_reg_list {
u32 num_of_regs;
const struct hi846_reg *regs;
};
struct hi846_mode {
/* Frame width in pixels */
u32 width;
/* Frame height in pixels */
u32 height;
/* Horizontal timing size */
u32 llp;
/* Link frequency needed for this resolution */
u8 link_freq_index;
u16 fps;
/* Vertical timining size */
u16 frame_len;
const struct hi846_reg_list reg_list_config;
const struct hi846_reg_list reg_list_2lane;
const struct hi846_reg_list reg_list_4lane;
/* Position inside of the 3264x2448 pixel array */
struct v4l2_rect crop;
};
static const struct hi846_reg hi846_init_2lane[] = {
{HI846_REG_MODE_SELECT, 0x0000},
/* regs below are unknown */
{0x2000, 0x100a},
{0x2002, 0x00ff},
{0x2004, 0x0007},
{0x2006, 0x3fff},
{0x2008, 0x3fff},
{0x200a, 0xc216},
{0x200c, 0x1292},
{0x200e, 0xc01a},
{0x2010, 0x403d},
{0x2012, 0x000e},
{0x2014, 0x403e},
{0x2016, 0x0b80},
{0x2018, 0x403f},
{0x201a, 0x82ae},
{0x201c, 0x1292},
{0x201e, 0xc00c},
{0x2020, 0x4130},
{0x2022, 0x43e2},
{0x2024, 0x0180},
{0x2026, 0x4130},
{0x2028, 0x7400},
{0x202a, 0x5000},
{0x202c, 0x0253},
{0x202e, 0x0ad1},
{0x2030, 0x2360},
{0x2032, 0x0009},
{0x2034, 0x5020},
{0x2036, 0x000b},
{0x2038, 0x0002},
{0x203a, 0x0044},
{0x203c, 0x0016},
{0x203e, 0x1792},
{0x2040, 0x7002},
{0x2042, 0x154f},
{0x2044, 0x00d5},
{0x2046, 0x000b},
{0x2048, 0x0019},
{0x204a, 0x1698},
{0x204c, 0x000e},
{0x204e, 0x099a},
{0x2050, 0x0058},
{0x2052, 0x7000},
{0x2054, 0x1799},
{0x2056, 0x0310},
{0x2058, 0x03c3},
{0x205a, 0x004c},
{0x205c, 0x064a},
{0x205e, 0x0001},
{0x2060, 0x0007},
{0x2062, 0x0bc7},
{0x2064, 0x0055},
{0x2066, 0x7000},
{0x2068, 0x1550},
{0x206a, 0x158a},
{0x206c, 0x0004},
{0x206e, 0x1488},
{0x2070, 0x7010},
{0x2072, 0x1508},
{0x2074, 0x0004},
{0x2076, 0x0016},
{0x2078, 0x03d5},
{0x207a, 0x0055},
{0x207c, 0x08ca},
{0x207e, 0x2019},
{0x2080, 0x0007},
{0x2082, 0x7057},
{0x2084, 0x0fc7},
{0x2086, 0x5041},
{0x2088, 0x12c8},
{0x208a, 0x5060},
{0x208c, 0x5080},
{0x208e, 0x2084},
{0x2090, 0x12c8},
{0x2092, 0x7800},
{0x2094, 0x0802},
{0x2096, 0x040f},
{0x2098, 0x1007},
{0x209a, 0x0803},
{0x209c, 0x080b},
{0x209e, 0x3803},
{0x20a0, 0x0807},
{0x20a2, 0x0404},
{0x20a4, 0x0400},
{0x20a6, 0xffff},
{0x20a8, 0xf0b2},
{0x20aa, 0xffef},
{0x20ac, 0x0a84},
{0x20ae, 0x1292},
{0x20b0, 0xc02e},
{0x20b2, 0x4130},
{0x23fe, 0xc056},
{0x3232, 0xfc0c},
{0x3236, 0xfc22},
{0x3248, 0xfca8},
{0x326a, 0x8302},
{0x326c, 0x830a},
{0x326e, 0x0000},
{0x32ca, 0xfc28},
{0x32cc, 0xc3bc},
{0x32ce, 0xc34c},
{0x32d0, 0xc35a},
{0x32d2, 0xc368},
{0x32d4, 0xc376},
{0x32d6, 0xc3c2},
{0x32d8, 0xc3e6},
{0x32da, 0x0003},
{0x32dc, 0x0003},
{0x32de, 0x00c7},
{0x32e0, 0x0031},
{0x32e2, 0x0031},
{0x32e4, 0x0031},
{0x32e6, 0xfc28},
{0x32e8, 0xc3bc},
{0x32ea, 0xc384},
{0x32ec, 0xc392},
{0x32ee, 0xc3a0},
{0x32f0, 0xc3ae},
{0x32f2, 0xc3c4},
{0x32f4, 0xc3e6},
{0x32f6, 0x0003},
{0x32f8, 0x0003},
{0x32fa, 0x00c7},
{0x32fc, 0x0031},
{0x32fe, 0x0031},
{0x3300, 0x0031},
{0x3302, 0x82ca},
{0x3304, 0xc164},
{0x3306, 0x82e6},
{0x3308, 0xc19c},
{0x330a, 0x001f},
{0x330c, 0x001a},
{0x330e, 0x0034},
{0x3310, 0x0000},
{0x3312, 0x0000},
{0x3314, 0xfc94},
{0x3316, 0xc3d8},
/* regs above are unknown */
{HI846_REG_MODE_SELECT, 0x0000},
{HI846_REG_UNKNOWN_0E04, 0x0012},
{HI846_REG_Y_ODD_INC_FOBP, 0x1111},
{HI846_REG_Y_ODD_INC_VACT, 0x1111},
{HI846_REG_UNKNOWN_0022, 0x0008},
{HI846_REG_Y_ADDR_START_VACT_H, 0x0040},
{HI846_REG_UNKNOWN_0028, 0x0017},
{HI846_REG_Y_ADDR_END_VACT_H, 0x09cf},
{HI846_REG_UNKNOWN_005C, 0x2101},
{HI846_REG_FLL, 0x09de},
{HI846_REG_LLP, 0x0ed8},
{HI846_REG_IMAGE_ORIENTATION, 0x0100},
{HI846_REG_BINNING_MODE, 0x0022},
{HI846_REG_HBIN_MODE, 0x0000},
{HI846_REG_UNKNOWN_0A24, 0x0000},
{HI846_REG_X_START_H, 0x0000},
{HI846_REG_X_OUTPUT_SIZE_H, 0x0cc0},
{HI846_REG_Y_OUTPUT_SIZE_H, 0x0990},
{HI846_REG_EXPOSURE, 0x09d8},
{HI846_REG_ANALOG_GAIN, 0x0000},
{HI846_REG_GROUPED_PARA_HOLD, 0x0000},
{HI846_REG_UNKNOWN_051E, 0x0000},
{HI846_REG_UNKNOWN_0200, 0x0400},
{HI846_REG_PEDESTAL_EN, 0x0c00},
{HI846_REG_UNKNOWN_0A0C, 0x0010},
{HI846_REG_UNKNOWN_0A1E, 0x0ccf},
{HI846_REG_UNKNOWN_0402, 0x0110},
{HI846_REG_UNKNOWN_0404, 0x00f4},
{HI846_REG_UNKNOWN_0408, 0x0000},
{HI846_REG_UNKNOWN_0410, 0x008d},
{HI846_REG_UNKNOWN_0412, 0x011a},
{HI846_REG_UNKNOWN_0414, 0x864c},
{HI846_REG_UNKNOWN_021C, 0x0003},
{HI846_REG_UNKNOWN_021E, 0x0235},
{HI846_REG_BLC_CTL0, 0x9150},
{HI846_REG_UNKNOWN_0C06, 0x0021},
{HI846_REG_UNKNOWN_0C10, 0x0040},
{HI846_REG_UNKNOWN_0C12, 0x0040},
{HI846_REG_UNKNOWN_0C14, 0x0040},
{HI846_REG_UNKNOWN_0C16, 0x0040},
{HI846_REG_FAST_STANDBY_MODE, 0x0100},
{HI846_REG_ISP_EN_H, 0x014a},
{HI846_REG_UNKNOWN_0418, 0x0000},
{HI846_REG_UNKNOWN_012A, 0x03b4},
{HI846_REG_X_ADDR_START_HACT_H, 0x0046},
{HI846_REG_X_ADDR_END_HACT_H, 0x0376},
{HI846_REG_UNKNOWN_0B02, 0xe04d},
{HI846_REG_UNKNOWN_0B10, 0x6821},
{HI846_REG_UNKNOWN_0B12, 0x0120},
{HI846_REG_UNKNOWN_0B14, 0x0001},
{HI846_REG_UNKNOWN_2008, 0x38fd},
{HI846_REG_UNKNOWN_326E, 0x0000},
{HI846_REG_UNKNOWN_0900, 0x0320},
{HI846_REG_MIPI_TX_OP_MODE, 0xc31a},
{HI846_REG_UNKNOWN_0914, 0xc109},
{HI846_REG_TCLK_PREPARE, 0x061a},
{HI846_REG_UNKNOWN_0918, 0x0306},
{HI846_REG_THS_ZERO, 0x0b09},
{HI846_REG_TCLK_POST, 0x0c07},
{HI846_REG_UNKNOWN_091E, 0x0a00},
{HI846_REG_UNKNOWN_090C, 0x042a},
{HI846_REG_UNKNOWN_090E, 0x006b},
{HI846_REG_UNKNOWN_0954, 0x0089},
{HI846_REG_UNKNOWN_0956, 0x0000},
{HI846_REG_UNKNOWN_0958, 0xca00},
{HI846_REG_UNKNOWN_095A, 0x9240},
{HI846_REG_UNKNOWN_0F08, 0x2f04},
{HI846_REG_UNKNOWN_0F30, 0x001f},
{HI846_REG_UNKNOWN_0F36, 0x001f},
{HI846_REG_UNKNOWN_0F04, 0x3a00},
{HI846_REG_PLL_CFG_RAMP1_H, 0x025a},
{HI846_REG_PLL_CFG_MIPI1_H, 0x025a},
{HI846_REG_PLL_CFG_MIPI2_H, 0x0024},
{HI846_REG_UNKNOWN_006A, 0x0100},
{HI846_REG_TG_ENABLE, 0x0100},
};
static const struct hi846_reg hi846_init_4lane[] = {
{0x2000, 0x987a},
{0x2002, 0x00ff},
{0x2004, 0x0047},
{0x2006, 0x3fff},
{0x2008, 0x3fff},
{0x200a, 0xc216},
{0x200c, 0x1292},
{0x200e, 0xc01a},
{0x2010, 0x403d},
{0x2012, 0x000e},
{0x2014, 0x403e},
{0x2016, 0x0b80},
{0x2018, 0x403f},
{0x201a, 0x82ae},
{0x201c, 0x1292},
{0x201e, 0xc00c},
{0x2020, 0x4130},
{0x2022, 0x43e2},
{0x2024, 0x0180},
{0x2026, 0x4130},
{0x2028, 0x7400},
{0x202a, 0x5000},
{0x202c, 0x0253},
{0x202e, 0x0ad1},
{0x2030, 0x2360},
{0x2032, 0x0009},
{0x2034, 0x5020},
{0x2036, 0x000b},
{0x2038, 0x0002},
{0x203a, 0x0044},
{0x203c, 0x0016},
{0x203e, 0x1792},
{0x2040, 0x7002},
{0x2042, 0x154f},
{0x2044, 0x00d5},
{0x2046, 0x000b},
{0x2048, 0x0019},
{0x204a, 0x1698},
{0x204c, 0x000e},
{0x204e, 0x099a},
{0x2050, 0x0058},
{0x2052, 0x7000},
{0x2054, 0x1799},
{0x2056, 0x0310},
{0x2058, 0x03c3},
{0x205a, 0x004c},
{0x205c, 0x064a},
{0x205e, 0x0001},
{0x2060, 0x0007},
{0x2062, 0x0bc7},
{0x2064, 0x0055},
{0x2066, 0x7000},
{0x2068, 0x1550},
{0x206a, 0x158a},
{0x206c, 0x0004},
{0x206e, 0x1488},
{0x2070, 0x7010},
{0x2072, 0x1508},
{0x2074, 0x0004},
{0x2076, 0x0016},
{0x2078, 0x03d5},
{0x207a, 0x0055},
{0x207c, 0x08ca},
{0x207e, 0x2019},
{0x2080, 0x0007},
{0x2082, 0x7057},
{0x2084, 0x0fc7},
{0x2086, 0x5041},
{0x2088, 0x12c8},
{0x208a, 0x5060},
{0x208c, 0x5080},
{0x208e, 0x2084},
{0x2090, 0x12c8},
{0x2092, 0x7800},
{0x2094, 0x0802},
{0x2096, 0x040f},
{0x2098, 0x1007},
{0x209a, 0x0803},
{0x209c, 0x080b},
{0x209e, 0x3803},
{0x20a0, 0x0807},
{0x20a2, 0x0404},
{0x20a4, 0x0400},
{0x20a6, 0xffff},
{0x20a8, 0xf0b2},
{0x20aa, 0xffef},
{0x20ac, 0x0a84},
{0x20ae, 0x1292},
{0x20b0, 0xc02e},
{0x20b2, 0x4130},
{0x20b4, 0xf0b2},
{0x20b6, 0xffbf},
{0x20b8, 0x2004},
{0x20ba, 0x403f},
{0x20bc, 0x00c3},
{0x20be, 0x4fe2},
{0x20c0, 0x8318},
{0x20c2, 0x43cf},
{0x20c4, 0x0000},
{0x20c6, 0x9382},
{0x20c8, 0xc314},
{0x20ca, 0x2003},
{0x20cc, 0x12b0},
{0x20ce, 0xcab0},
{0x20d0, 0x4130},
{0x20d2, 0x12b0},
{0x20d4, 0xc90a},
{0x20d6, 0x4130},
{0x20d8, 0x42d2},
{0x20da, 0x8318},
{0x20dc, 0x00c3},
{0x20de, 0x9382},
{0x20e0, 0xc314},
{0x20e2, 0x2009},
{0x20e4, 0x120b},
{0x20e6, 0x120a},
{0x20e8, 0x1209},
{0x20ea, 0x1208},
{0x20ec, 0x1207},
{0x20ee, 0x1206},
{0x20f0, 0x4030},
{0x20f2, 0xc15e},
{0x20f4, 0x4130},
{0x20f6, 0x1292},
{0x20f8, 0xc008},
{0x20fa, 0x4130},
{0x20fc, 0x42d2},
{0x20fe, 0x82a1},
{0x2100, 0x00c2},
{0x2102, 0x1292},
{0x2104, 0xc040},
{0x2106, 0x4130},
{0x2108, 0x1292},
{0x210a, 0xc006},
{0x210c, 0x42a2},
{0x210e, 0x7324},
{0x2110, 0x9382},
{0x2112, 0xc314},
{0x2114, 0x2011},
{0x2116, 0x425f},
{0x2118, 0x82a1},
{0x211a, 0xf25f},
{0x211c, 0x00c1},
{0x211e, 0xf35f},
{0x2120, 0x2406},
{0x2122, 0x425f},
{0x2124, 0x00c0},
{0x2126, 0xf37f},
{0x2128, 0x522f},
{0x212a, 0x4f82},
{0x212c, 0x7324},
{0x212e, 0x425f},
{0x2130, 0x82d4},
{0x2132, 0xf35f},
{0x2134, 0x4fc2},
{0x2136, 0x01b3},
{0x2138, 0x93c2},
{0x213a, 0x829f},
{0x213c, 0x2421},
{0x213e, 0x403e},
{0x2140, 0xfffe},
{0x2142, 0x40b2},
{0x2144, 0xec78},
{0x2146, 0x831c},
{0x2148, 0x40b2},
{0x214a, 0xec78},
{0x214c, 0x831e},
{0x214e, 0x40b2},
{0x2150, 0xec78},
{0x2152, 0x8320},
{0x2154, 0xb3d2},
{0x2156, 0x008c},
{0x2158, 0x2405},
{0x215a, 0x4e0f},
{0x215c, 0x503f},
{0x215e, 0xffd8},
{0x2160, 0x4f82},
{0x2162, 0x831c},
{0x2164, 0x90f2},
{0x2166, 0x0003},
{0x2168, 0x008c},
{0x216a, 0x2401},
{0x216c, 0x4130},
{0x216e, 0x421f},
{0x2170, 0x831c},
{0x2172, 0x5e0f},
{0x2174, 0x4f82},
{0x2176, 0x831e},
{0x2178, 0x5e0f},
{0x217a, 0x4f82},
{0x217c, 0x8320},
{0x217e, 0x3ff6},
{0x2180, 0x432e},
{0x2182, 0x3fdf},
{0x2184, 0x421f},
{0x2186, 0x7100},
{0x2188, 0x4f0e},
{0x218a, 0x503e},
{0x218c, 0xffd8},
{0x218e, 0x4e82},
{0x2190, 0x7a04},
{0x2192, 0x421e},
{0x2194, 0x831c},
{0x2196, 0x5f0e},
{0x2198, 0x4e82},
{0x219a, 0x7a06},
{0x219c, 0x0b00},
{0x219e, 0x7304},
{0x21a0, 0x0050},
{0x21a2, 0x40b2},
{0x21a4, 0xd081},
{0x21a6, 0x0b88},
{0x21a8, 0x421e},
{0x21aa, 0x831e},
{0x21ac, 0x5f0e},
{0x21ae, 0x4e82},
{0x21b0, 0x7a0e},
{0x21b2, 0x521f},
{0x21b4, 0x8320},
{0x21b6, 0x4f82},
{0x21b8, 0x7a10},
{0x21ba, 0x0b00},
{0x21bc, 0x7304},
{0x21be, 0x007a},
{0x21c0, 0x40b2},
{0x21c2, 0x0081},
{0x21c4, 0x0b88},
{0x21c6, 0x4392},
{0x21c8, 0x7a0a},
{0x21ca, 0x0800},
{0x21cc, 0x7a0c},
{0x21ce, 0x0b00},
{0x21d0, 0x7304},
{0x21d2, 0x022b},
{0x21d4, 0x40b2},
{0x21d6, 0xd081},
{0x21d8, 0x0b88},
{0x21da, 0x0b00},
{0x21dc, 0x7304},
{0x21de, 0x0255},
{0x21e0, 0x40b2},
{0x21e2, 0x0081},
{0x21e4, 0x0b88},
{0x21e6, 0x4130},
{0x23fe, 0xc056},
{0x3232, 0xfc0c},
{0x3236, 0xfc22},
{0x3238, 0xfcfc},
{0x323a, 0xfd84},
{0x323c, 0xfd08},
{0x3246, 0xfcd8},
{0x3248, 0xfca8},
{0x324e, 0xfcb4},
{0x326a, 0x8302},
{0x326c, 0x830a},
{0x326e, 0x0000},
{0x32ca, 0xfc28},
{0x32cc, 0xc3bc},
{0x32ce, 0xc34c},
{0x32d0, 0xc35a},
{0x32d2, 0xc368},
{0x32d4, 0xc376},
{0x32d6, 0xc3c2},
{0x32d8, 0xc3e6},
{0x32da, 0x0003},
{0x32dc, 0x0003},
{0x32de, 0x00c7},
{0x32e0, 0x0031},
{0x32e2, 0x0031},
{0x32e4, 0x0031},
{0x32e6, 0xfc28},
{0x32e8, 0xc3bc},
{0x32ea, 0xc384},
{0x32ec, 0xc392},
{0x32ee, 0xc3a0},
{0x32f0, 0xc3ae},
{0x32f2, 0xc3c4},
{0x32f4, 0xc3e6},
{0x32f6, 0x0003},
{0x32f8, 0x0003},
{0x32fa, 0x00c7},
{0x32fc, 0x0031},
{0x32fe, 0x0031},
{0x3300, 0x0031},
{0x3302, 0x82ca},
{0x3304, 0xc164},
{0x3306, 0x82e6},
{0x3308, 0xc19c},
{0x330a, 0x001f},
{0x330c, 0x001a},
{0x330e, 0x0034},
{0x3310, 0x0000},
{0x3312, 0x0000},
{0x3314, 0xfc94},
{0x3316, 0xc3d8},
{0x0a00, 0x0000},
{0x0e04, 0x0012},
{0x002e, 0x1111},
{0x0032, 0x1111},
{0x0022, 0x0008},
{0x0026, 0x0040},
{0x0028, 0x0017},
{0x002c, 0x09cf},
{0x005c, 0x2101},
{0x0006, 0x09de},
{0x0008, 0x0ed8},
{0x000e, 0x0100},
{0x000c, 0x0022},
{0x0a22, 0x0000},
{0x0a24, 0x0000},
{0x0804, 0x0000},
{0x0a12, 0x0cc0},
{0x0a14, 0x0990},
{0x0074, 0x09d8},
{0x0076, 0x0000},
{0x051e, 0x0000},
{0x0200, 0x0400},
{0x0a1a, 0x0c00},
{0x0a0c, 0x0010},
{0x0a1e, 0x0ccf},
{0x0402, 0x0110},
{0x0404, 0x00f4},
{0x0408, 0x0000},
{0x0410, 0x008d},
{0x0412, 0x011a},
{0x0414, 0x864c},
/* for OTP */
{0x021c, 0x0003},
{0x021e, 0x0235},
/* for OTP */
{0x0c00, 0x9950},
{0x0c06, 0x0021},
{0x0c10, 0x0040},
{0x0c12, 0x0040},
{0x0c14, 0x0040},
{0x0c16, 0x0040},
{0x0a02, 0x0100},
{0x0a04, 0x015a},
{0x0418, 0x0000},
{0x0128, 0x0028},
{0x012a, 0xffff},
{0x0120, 0x0046},
{0x0122, 0x0376},
{0x012c, 0x0020},
{0x012e, 0xffff},
{0x0124, 0x0040},
{0x0126, 0x0378},
{0x0746, 0x0050},
{0x0748, 0x01d5},
{0x074a, 0x022b},
{0x074c, 0x03b0},
{0x0756, 0x043f},
{0x0758, 0x3f1d},
{0x0b02, 0xe04d},
{0x0b10, 0x6821},
{0x0b12, 0x0120},
{0x0b14, 0x0001},
{0x2008, 0x38fd},
{0x326e, 0x0000},
{0x0900, 0x0300},
{0x0902, 0xc319},
{0x0914, 0xc109},
{0x0916, 0x061a},
{0x0918, 0x0407},
{0x091a, 0x0a0b},
{0x091c, 0x0e08},
{0x091e, 0x0a00},
{0x090c, 0x0427},
{0x090e, 0x0059},
{0x0954, 0x0089},
{0x0956, 0x0000},
{0x0958, 0xca80},
{0x095a, 0x9240},
{0x0f08, 0x2f04},
{0x0f30, 0x001f},
{0x0f36, 0x001f},
{0x0f04, 0x3a00},
{0x0f32, 0x025a},
{0x0f38, 0x025a},
{0x0f2a, 0x4124},
{0x006a, 0x0100},
{0x004c, 0x0100},
{0x0044, 0x0001},
};
static const struct hi846_reg mode_640x480_config[] = {
{HI846_REG_MODE_SELECT, 0x0000},
{HI846_REG_Y_ODD_INC_FOBP, 0x7711},
{HI846_REG_Y_ODD_INC_VACT, 0x7711},
{HI846_REG_Y_ADDR_START_VACT_H, 0x0148},
{HI846_REG_Y_ADDR_END_VACT_H, 0x08c7},
{HI846_REG_UNKNOWN_005C, 0x4404},
{HI846_REG_FLL, 0x0277},
{HI846_REG_LLP, 0x0ed8},
{HI846_REG_BINNING_MODE, 0x0322},
{HI846_REG_HBIN_MODE, 0x0200},
{HI846_REG_UNKNOWN_0A24, 0x0000},
{HI846_REG_X_START_H, 0x0058},
{HI846_REG_X_OUTPUT_SIZE_H, 0x0280},
{HI846_REG_Y_OUTPUT_SIZE_H, 0x01e0},
/* For OTP */
{HI846_REG_UNKNOWN_021C, 0x0003},
{HI846_REG_UNKNOWN_021E, 0x0235},
{HI846_REG_ISP_EN_H, 0x016a},
{HI846_REG_UNKNOWN_0418, 0x0210},
{HI846_REG_UNKNOWN_0B02, 0xe04d},
{HI846_REG_UNKNOWN_0B10, 0x7021},
{HI846_REG_UNKNOWN_0B12, 0x0120},
{HI846_REG_UNKNOWN_0B14, 0x0001},
{HI846_REG_UNKNOWN_2008, 0x38fd},
{HI846_REG_UNKNOWN_326E, 0x0000},
};
static const struct hi846_reg mode_640x480_mipi_2lane[] = {
{HI846_REG_UNKNOWN_0900, 0x0300},
{HI846_REG_MIPI_TX_OP_MODE, 0x4319},
{HI846_REG_UNKNOWN_0914, 0xc105},
{HI846_REG_TCLK_PREPARE, 0x030c},
{HI846_REG_UNKNOWN_0918, 0x0304},
{HI846_REG_THS_ZERO, 0x0708},
{HI846_REG_TCLK_POST, 0x0b04},
{HI846_REG_UNKNOWN_091E, 0x0500},
{HI846_REG_UNKNOWN_090C, 0x0208},
{HI846_REG_UNKNOWN_090E, 0x009a},
{HI846_REG_UNKNOWN_0954, 0x0089},
{HI846_REG_UNKNOWN_0956, 0x0000},
{HI846_REG_UNKNOWN_0958, 0xca80},
{HI846_REG_UNKNOWN_095A, 0x9240},
{HI846_REG_PLL_CFG_MIPI2_H, 0x4924},
{HI846_REG_TG_ENABLE, 0x0100},
};
static const struct hi846_reg mode_1280x720_config[] = {
{HI846_REG_MODE_SELECT, 0x0000},
{HI846_REG_Y_ODD_INC_FOBP, 0x3311},
{HI846_REG_Y_ODD_INC_VACT, 0x3311},
{HI846_REG_Y_ADDR_START_VACT_H, 0x0238},
{HI846_REG_Y_ADDR_END_VACT_H, 0x07d7},
{HI846_REG_UNKNOWN_005C, 0x4202},
{HI846_REG_FLL, 0x034a},
{HI846_REG_LLP, 0x0ed8},
{HI846_REG_BINNING_MODE, 0x0122},
{HI846_REG_HBIN_MODE, 0x0100},
{HI846_REG_UNKNOWN_0A24, 0x0000},
{HI846_REG_X_START_H, 0x00b0},
{HI846_REG_X_OUTPUT_SIZE_H, 0x0500},
{HI846_REG_Y_OUTPUT_SIZE_H, 0x02d0},
{HI846_REG_EXPOSURE, 0x0344},
/* For OTP */
{HI846_REG_UNKNOWN_021C, 0x0003},
{HI846_REG_UNKNOWN_021E, 0x0235},
{HI846_REG_ISP_EN_H, 0x016a},
{HI846_REG_UNKNOWN_0418, 0x0410},
{HI846_REG_UNKNOWN_0B02, 0xe04d},
{HI846_REG_UNKNOWN_0B10, 0x6c21},
{HI846_REG_UNKNOWN_0B12, 0x0120},
{HI846_REG_UNKNOWN_0B14, 0x0005},
{HI846_REG_UNKNOWN_2008, 0x38fd},
{HI846_REG_UNKNOWN_326E, 0x0000},
};
static const struct hi846_reg mode_1280x720_mipi_2lane[] = {
{HI846_REG_UNKNOWN_0900, 0x0300},
{HI846_REG_MIPI_TX_OP_MODE, 0x4319},
{HI846_REG_UNKNOWN_0914, 0xc109},
{HI846_REG_TCLK_PREPARE, 0x061a},
{HI846_REG_UNKNOWN_0918, 0x0407},
{HI846_REG_THS_ZERO, 0x0a0b},
{HI846_REG_TCLK_POST, 0x0e08},
{HI846_REG_UNKNOWN_091E, 0x0a00},
{HI846_REG_UNKNOWN_090C, 0x0427},
{HI846_REG_UNKNOWN_090E, 0x0145},
{HI846_REG_UNKNOWN_0954, 0x0089},
{HI846_REG_UNKNOWN_0956, 0x0000},
{HI846_REG_UNKNOWN_0958, 0xca80},
{HI846_REG_UNKNOWN_095A, 0x9240},
{HI846_REG_PLL_CFG_MIPI2_H, 0x4124},
{HI846_REG_TG_ENABLE, 0x0100},
};
static const struct hi846_reg mode_1280x720_mipi_4lane[] = {
/* 360Mbps */
{HI846_REG_UNKNOWN_0900, 0x0300},
{HI846_REG_MIPI_TX_OP_MODE, 0xc319},
{HI846_REG_UNKNOWN_0914, 0xc105},
{HI846_REG_TCLK_PREPARE, 0x030c},
{HI846_REG_UNKNOWN_0918, 0x0304},
{HI846_REG_THS_ZERO, 0x0708},
{HI846_REG_TCLK_POST, 0x0b04},
{HI846_REG_UNKNOWN_091E, 0x0500},
{HI846_REG_UNKNOWN_090C, 0x0208},
{HI846_REG_UNKNOWN_090E, 0x008a},
{HI846_REG_UNKNOWN_0954, 0x0089},
{HI846_REG_UNKNOWN_0956, 0x0000},
{HI846_REG_UNKNOWN_0958, 0xca80},
{HI846_REG_UNKNOWN_095A, 0x9240},
{HI846_REG_PLL_CFG_MIPI2_H, 0x4924},
{HI846_REG_TG_ENABLE, 0x0100},
};
static const struct hi846_reg mode_1632x1224_config[] = {
{HI846_REG_MODE_SELECT, 0x0000},
{HI846_REG_Y_ODD_INC_FOBP, 0x3311},
{HI846_REG_Y_ODD_INC_VACT, 0x3311},
{HI846_REG_Y_ADDR_START_VACT_H, 0x0040},
{HI846_REG_Y_ADDR_END_VACT_H, 0x09cf},
{HI846_REG_UNKNOWN_005C, 0x4202},
{HI846_REG_FLL, 0x09de},
{HI846_REG_LLP, 0x0ed8},
{HI846_REG_BINNING_MODE, 0x0122},
{HI846_REG_HBIN_MODE, 0x0100},
{HI846_REG_UNKNOWN_0A24, 0x0000},
{HI846_REG_X_START_H, 0x0000},
{HI846_REG_X_OUTPUT_SIZE_H, 0x0660},
{HI846_REG_Y_OUTPUT_SIZE_H, 0x04c8},
{HI846_REG_EXPOSURE, 0x09d8},
/* For OTP */
{HI846_REG_UNKNOWN_021C, 0x0003},
{HI846_REG_UNKNOWN_021E, 0x0235},
{HI846_REG_ISP_EN_H, 0x016a},
{HI846_REG_UNKNOWN_0418, 0x0000},
{HI846_REG_UNKNOWN_0B02, 0xe04d},
{HI846_REG_UNKNOWN_0B10, 0x6c21},
{HI846_REG_UNKNOWN_0B12, 0x0120},
{HI846_REG_UNKNOWN_0B14, 0x0005},
{HI846_REG_UNKNOWN_2008, 0x38fd},
{HI846_REG_UNKNOWN_326E, 0x0000},
};
static const struct hi846_reg mode_1632x1224_mipi_2lane[] = {
{HI846_REG_UNKNOWN_0900, 0x0300},
{HI846_REG_MIPI_TX_OP_MODE, 0x4319},
{HI846_REG_UNKNOWN_0914, 0xc109},
{HI846_REG_TCLK_PREPARE, 0x061a},
{HI846_REG_UNKNOWN_0918, 0x0407},
{HI846_REG_THS_ZERO, 0x0a0b},
{HI846_REG_TCLK_POST, 0x0e08},
{HI846_REG_UNKNOWN_091E, 0x0a00},
{HI846_REG_UNKNOWN_090C, 0x0427},
{HI846_REG_UNKNOWN_090E, 0x0069},
{HI846_REG_UNKNOWN_0954, 0x0089},
{HI846_REG_UNKNOWN_0956, 0x0000},
{HI846_REG_UNKNOWN_0958, 0xca80},
{HI846_REG_UNKNOWN_095A, 0x9240},
{HI846_REG_PLL_CFG_MIPI2_H, 0x4124},
{HI846_REG_TG_ENABLE, 0x0100},
};
static const struct hi846_reg mode_1632x1224_mipi_4lane[] = {
{HI846_REG_UNKNOWN_0900, 0x0300},
{HI846_REG_MIPI_TX_OP_MODE, 0xc319},
{HI846_REG_UNKNOWN_0914, 0xc105},
{HI846_REG_TCLK_PREPARE, 0x030c},
{HI846_REG_UNKNOWN_0918, 0x0304},
{HI846_REG_THS_ZERO, 0x0708},
{HI846_REG_TCLK_POST, 0x0b04},
{HI846_REG_UNKNOWN_091E, 0x0500},
{HI846_REG_UNKNOWN_090C, 0x0208},
{HI846_REG_UNKNOWN_090E, 0x001c},
{HI846_REG_UNKNOWN_0954, 0x0089},
{HI846_REG_UNKNOWN_0956, 0x0000},
{HI846_REG_UNKNOWN_0958, 0xca80},
{HI846_REG_UNKNOWN_095A, 0x9240},
{HI846_REG_PLL_CFG_MIPI2_H, 0x4924},
{HI846_REG_TG_ENABLE, 0x0100},
};
static const char * const hi846_test_pattern_menu[] = {
"Disabled",
"Solid Colour",
"100% Colour Bars",
"Fade To Grey Colour Bars",
"PN9",
"Gradient Horizontal",
"Gradient Vertical",
"Check Board",
"Slant Pattern",
"Resolution Pattern",
};
#define FREQ_INDEX_640 0
#define FREQ_INDEX_1280 1
static const s64 hi846_link_freqs[] = {
[FREQ_INDEX_640] = 80000000,
[FREQ_INDEX_1280] = 200000000,
};
static const struct hi846_reg_list hi846_init_regs_list_2lane = {
.num_of_regs = ARRAY_SIZE(hi846_init_2lane),
.regs = hi846_init_2lane,
};
static const struct hi846_reg_list hi846_init_regs_list_4lane = {
.num_of_regs = ARRAY_SIZE(hi846_init_4lane),
.regs = hi846_init_4lane,
};
static const struct hi846_mode supported_modes[] = {
{
.width = 640,
.height = 480,
.link_freq_index = FREQ_INDEX_640,
.fps = 120,
.frame_len = 631,
.llp = HI846_LINE_LENGTH,
.reg_list_config = {
.num_of_regs = ARRAY_SIZE(mode_640x480_config),
.regs = mode_640x480_config,
},
.reg_list_2lane = {
.num_of_regs = ARRAY_SIZE(mode_640x480_mipi_2lane),
.regs = mode_640x480_mipi_2lane,
},
.reg_list_4lane = {
.num_of_regs = 0,
},
.crop = {
.left = 0x58,
.top = 0x148,
.width = 640 * 4,
.height = 480 * 4,
},
},
{
.width = 1280,
.height = 720,
.link_freq_index = FREQ_INDEX_1280,
.fps = 90,
.frame_len = 842,
.llp = HI846_LINE_LENGTH,
.reg_list_config = {
.num_of_regs = ARRAY_SIZE(mode_1280x720_config),
.regs = mode_1280x720_config,
},
.reg_list_2lane = {
.num_of_regs = ARRAY_SIZE(mode_1280x720_mipi_2lane),
.regs = mode_1280x720_mipi_2lane,
},
.reg_list_4lane = {
.num_of_regs = ARRAY_SIZE(mode_1280x720_mipi_4lane),
.regs = mode_1280x720_mipi_4lane,
},
.crop = {
.left = 0xb0,
.top = 0x238,
.width = 1280 * 2,
.height = 720 * 2,
},
},
{
.width = 1632,
.height = 1224,
.link_freq_index = FREQ_INDEX_1280,
.fps = 30,
.frame_len = 2526,
.llp = HI846_LINE_LENGTH,
.reg_list_config = {
.num_of_regs = ARRAY_SIZE(mode_1632x1224_config),
.regs = mode_1632x1224_config,
},
.reg_list_2lane = {
.num_of_regs = ARRAY_SIZE(mode_1632x1224_mipi_2lane),
.regs = mode_1632x1224_mipi_2lane,
},
.reg_list_4lane = {
.num_of_regs = ARRAY_SIZE(mode_1632x1224_mipi_4lane),
.regs = mode_1632x1224_mipi_4lane,
},
.crop = {
.left = 0x0,
.top = 0x0,
.width = 1632 * 2,
.height = 1224 * 2,
},
}
};
struct hi846_datafmt {
u32 code;
enum v4l2_colorspace colorspace;
};
static const char * const hi846_supply_names[] = {
"vddio", /* Digital I/O (1.8V or 2.8V) */
"vdda", /* Analog (2.8V) */
"vddd", /* Digital Core (1.2V) */
};
#define HI846_NUM_SUPPLIES ARRAY_SIZE(hi846_supply_names)
struct hi846 {
struct gpio_desc *rst_gpio;
struct gpio_desc *shutdown_gpio;
struct regulator_bulk_data supplies[HI846_NUM_SUPPLIES];
struct clk *clock;
const struct hi846_datafmt *fmt;
struct v4l2_subdev sd;
struct media_pad pad;
struct v4l2_ctrl_handler ctrl_handler;
u8 nr_lanes;
struct v4l2_ctrl *link_freq;
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *exposure;
struct mutex mutex; /* protect cur_mode, streaming and chip access */
const struct hi846_mode *cur_mode;
bool streaming;
};
static inline struct hi846 *to_hi846(struct v4l2_subdev *sd)
{
return container_of(sd, struct hi846, sd);
}
static const struct hi846_datafmt hi846_colour_fmts[] = {
{ HI846_MEDIA_BUS_FORMAT, V4L2_COLORSPACE_RAW },
};
static const struct hi846_datafmt *hi846_find_datafmt(u32 code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(hi846_colour_fmts); i++)
if (hi846_colour_fmts[i].code == code)
return &hi846_colour_fmts[i];
return NULL;
}
static inline u8 hi846_get_link_freq_index(struct hi846 *hi846)
{
return hi846->cur_mode->link_freq_index;
}
static u64 hi846_get_link_freq(struct hi846 *hi846)
{
u8 index = hi846_get_link_freq_index(hi846);
return hi846_link_freqs[index];
}
static u64 hi846_calc_pixel_rate(struct hi846 *hi846)
{
u64 link_freq = hi846_get_link_freq(hi846);
u64 pixel_rate = link_freq * 2 * hi846->nr_lanes;
do_div(pixel_rate, HI846_RGB_DEPTH);
return pixel_rate;
}
static int hi846_read_reg(struct hi846 *hi846, u16 reg, u8 *val)
{
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
struct i2c_msg msgs[2];
u8 addr_buf[2];
u8 data_buf[1] = {0};
int ret;
put_unaligned_be16(reg, addr_buf);
msgs[0].addr = client->addr;
msgs[0].flags = 0;
msgs[0].len = sizeof(addr_buf);
msgs[0].buf = addr_buf;
msgs[1].addr = client->addr;
msgs[1].flags = I2C_M_RD;
msgs[1].len = 1;
msgs[1].buf = data_buf;
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (ret != ARRAY_SIZE(msgs)) {
dev_err(&client->dev, "i2c read error: %d\n", ret);
return -EIO;
}
*val = data_buf[0];
return 0;
}
static int hi846_write_reg(struct hi846 *hi846, u16 reg, u8 val)
{
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
u8 buf[3] = { reg >> 8, reg & 0xff, val };
struct i2c_msg msg[] = {
{ .addr = client->addr, .flags = 0,
.len = ARRAY_SIZE(buf), .buf = buf },
};
int ret;
ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg));
if (ret != ARRAY_SIZE(msg)) {
dev_err(&client->dev, "i2c write error\n");
return -EIO;
}
return 0;
}
static void hi846_write_reg_16(struct hi846 *hi846, u16 reg, u16 val, int *err)
{
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
u8 buf[4];
int ret;
if (*err < 0)
return;
put_unaligned_be16(reg, buf);
put_unaligned_be16(val, buf + 2);
ret = i2c_master_send(client, buf, sizeof(buf));
if (ret != sizeof(buf)) {
dev_err(&client->dev, "i2c_master_send != %zu: %d\n",
sizeof(buf), ret);
*err = -EIO;
}
}
static int hi846_write_reg_list(struct hi846 *hi846,
const struct hi846_reg_list *r_list)
{
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
unsigned int i;
int ret = 0;
for (i = 0; i < r_list->num_of_regs; i++) {
hi846_write_reg_16(hi846, r_list->regs[i].address,
r_list->regs[i].val, &ret);
if (ret) {
dev_err_ratelimited(&client->dev,
"failed to write reg 0x%4.4x: %d",
r_list->regs[i].address, ret);
return ret;
}
}
return 0;
}
static int hi846_update_digital_gain(struct hi846 *hi846, u16 d_gain)
{
int ret = 0;
hi846_write_reg_16(hi846, HI846_REG_MWB_GR_GAIN_H, d_gain, &ret);
hi846_write_reg_16(hi846, HI846_REG_MWB_GB_GAIN_H, d_gain, &ret);
hi846_write_reg_16(hi846, HI846_REG_MWB_R_GAIN_H, d_gain, &ret);
hi846_write_reg_16(hi846, HI846_REG_MWB_B_GAIN_H, d_gain, &ret);
return ret;
}
static int hi846_test_pattern(struct hi846 *hi846, u32 pattern)
{
int ret;
u8 val;
if (pattern) {
ret = hi846_read_reg(hi846, HI846_REG_ISP, &val);
if (ret)
return ret;
ret = hi846_write_reg(hi846, HI846_REG_ISP,
val | HI846_REG_ISP_TPG_EN);
if (ret)
return ret;
}
return hi846_write_reg(hi846, HI846_REG_TEST_PATTERN, pattern);
}
static int hi846_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct hi846 *hi846 = container_of(ctrl->handler,
struct hi846, ctrl_handler);
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
s64 exposure_max;
int ret = 0;
u32 shutter, frame_len;
/* Propagate change of current control to all related controls */
if (ctrl->id == V4L2_CID_VBLANK) {
/* Update max exposure while meeting expected vblanking */
exposure_max = hi846->cur_mode->height + ctrl->val -
HI846_EXPOSURE_MAX_MARGIN;
__v4l2_ctrl_modify_range(hi846->exposure,
hi846->exposure->minimum,
exposure_max, hi846->exposure->step,
exposure_max);
}
ret = pm_runtime_get_if_in_use(&client->dev);
if (!ret || ret == -EAGAIN)
return 0;
switch (ctrl->id) {
case V4L2_CID_ANALOGUE_GAIN:
ret = hi846_write_reg(hi846, HI846_REG_ANALOG_GAIN, ctrl->val);
break;
case V4L2_CID_DIGITAL_GAIN:
ret = hi846_update_digital_gain(hi846, ctrl->val);
break;
case V4L2_CID_EXPOSURE:
shutter = ctrl->val;
frame_len = hi846->cur_mode->frame_len;
if (shutter > frame_len - 6) { /* margin */
frame_len = shutter + 6;
if (frame_len > 0xffff) { /* max frame len */
frame_len = 0xffff;
}
}
if (shutter < 6)
shutter = 6;
if (shutter > (0xffff - 6))
shutter = 0xffff - 6;
hi846_write_reg_16(hi846, HI846_REG_FLL, frame_len, &ret);
hi846_write_reg_16(hi846, HI846_REG_EXPOSURE, shutter, &ret);
break;
case V4L2_CID_VBLANK:
/* Update FLL that meets expected vertical blanking */
hi846_write_reg_16(hi846, HI846_REG_FLL,
hi846->cur_mode->height + ctrl->val, &ret);
break;
case V4L2_CID_TEST_PATTERN:
ret = hi846_test_pattern(hi846, ctrl->val);
break;
default:
ret = -EINVAL;
break;
}
pm_runtime_put(&client->dev);
return ret;
}
static const struct v4l2_ctrl_ops hi846_ctrl_ops = {
.s_ctrl = hi846_set_ctrl,
};
static int hi846_init_controls(struct hi846 *hi846)
{
struct v4l2_ctrl_handler *ctrl_hdlr;
s64 exposure_max, h_blank;
int ret;
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
struct v4l2_fwnode_device_properties props;
ctrl_hdlr = &hi846->ctrl_handler;
ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10);
if (ret)
return ret;
ctrl_hdlr->lock = &hi846->mutex;
hi846->link_freq =
v4l2_ctrl_new_int_menu(ctrl_hdlr, &hi846_ctrl_ops,
V4L2_CID_LINK_FREQ,
ARRAY_SIZE(hi846_link_freqs) - 1,
0, hi846_link_freqs);
if (hi846->link_freq)
hi846->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
hi846->pixel_rate =
v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops,
V4L2_CID_PIXEL_RATE, 0,
hi846_calc_pixel_rate(hi846), 1,
hi846_calc_pixel_rate(hi846));
hi846->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops,
V4L2_CID_VBLANK,
hi846->cur_mode->frame_len -
hi846->cur_mode->height,
HI846_FLL_MAX -
hi846->cur_mode->height, 1,
hi846->cur_mode->frame_len -
hi846->cur_mode->height);
h_blank = hi846->cur_mode->llp - hi846->cur_mode->width;
hi846->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops,
V4L2_CID_HBLANK, h_blank, h_blank, 1,
h_blank);
if (hi846->hblank)
hi846->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
HI846_ANAL_GAIN_MIN, HI846_ANAL_GAIN_MAX,
HI846_ANAL_GAIN_STEP, HI846_ANAL_GAIN_MIN);
v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
HI846_DGTL_GAIN_MIN, HI846_DGTL_GAIN_MAX,
HI846_DGTL_GAIN_STEP, HI846_DGTL_GAIN_DEFAULT);
exposure_max = hi846->cur_mode->frame_len - HI846_EXPOSURE_MAX_MARGIN;
hi846->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &hi846_ctrl_ops,
V4L2_CID_EXPOSURE,
HI846_EXPOSURE_MIN, exposure_max,
HI846_EXPOSURE_STEP,
exposure_max);
v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &hi846_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(hi846_test_pattern_menu) - 1,
0, 0, hi846_test_pattern_menu);
if (ctrl_hdlr->error) {
dev_err(&client->dev, "v4l ctrl handler error: %d\n",
ctrl_hdlr->error);
ret = ctrl_hdlr->error;
goto error;
}
ret = v4l2_fwnode_device_parse(&client->dev, &props);
if (ret)
goto error;
ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &hi846_ctrl_ops,
&props);
if (ret)
goto error;
hi846->sd.ctrl_handler = ctrl_hdlr;
return 0;
error:
v4l2_ctrl_handler_free(ctrl_hdlr);
return ret;
}
static int hi846_set_video_mode(struct hi846 *hi846, int fps)
{
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
u64 frame_length;
int ret = 0;
int dummy_lines;
u64 link_freq = hi846_get_link_freq(hi846);
dev_dbg(&client->dev, "%s: link freq: %llu\n", __func__,
hi846_get_link_freq(hi846));
do_div(link_freq, fps);
frame_length = link_freq;
do_div(frame_length, HI846_LINE_LENGTH);
dummy_lines = (frame_length > hi846->cur_mode->frame_len) ?
(frame_length - hi846->cur_mode->frame_len) : 0;
frame_length = hi846->cur_mode->frame_len + dummy_lines;
dev_dbg(&client->dev, "%s: frame length calculated: %llu\n", __func__,
frame_length);
hi846_write_reg_16(hi846, HI846_REG_FLL, frame_length & 0xFFFF, &ret);
hi846_write_reg_16(hi846, HI846_REG_LLP,
HI846_LINE_LENGTH & 0xFFFF, &ret);
return ret;
}
static int hi846_start_streaming(struct hi846 *hi846)
{
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
int ret = 0;
u8 val;
if (hi846->nr_lanes == 2)
ret = hi846_write_reg_list(hi846, &hi846_init_regs_list_2lane);
else
ret = hi846_write_reg_list(hi846, &hi846_init_regs_list_4lane);
if (ret) {
dev_err(&client->dev, "failed to set plls: %d\n", ret);
return ret;
}
ret = hi846_write_reg_list(hi846, &hi846->cur_mode->reg_list_config);
if (ret) {
dev_err(&client->dev, "failed to set mode: %d\n", ret);
return ret;
}
if (hi846->nr_lanes == 2)
ret = hi846_write_reg_list(hi846,
&hi846->cur_mode->reg_list_2lane);
else
ret = hi846_write_reg_list(hi846,
&hi846->cur_mode->reg_list_4lane);
if (ret) {
dev_err(&client->dev, "failed to set mipi mode: %d\n", ret);
return ret;
}
hi846_set_video_mode(hi846, hi846->cur_mode->fps);
ret = __v4l2_ctrl_handler_setup(hi846->sd.ctrl_handler);
if (ret)
return ret;
/*
* Reading 0x0034 is purely done for debugging reasons: It is not
* documented in the DS but only mentioned once:
* "If 0x0034[2] bit is disabled , Visible pixel width and height is 0."
* So even though that sounds like we won't see anything, we don't
* know more about this, so in that case only inform the user but do
* nothing more.
*/
ret = hi846_read_reg(hi846, 0x0034, &val);
if (ret)
return ret;
if (!(val & BIT(2)))
dev_info(&client->dev, "visible pixel width and height is 0\n");
ret = hi846_write_reg(hi846, HI846_REG_MODE_SELECT,
HI846_MODE_STREAMING);
if (ret) {
dev_err(&client->dev, "failed to start stream");
return ret;
}
hi846->streaming = 1;
dev_dbg(&client->dev, "%s: started streaming successfully\n", __func__);
return ret;
}
static void hi846_stop_streaming(struct hi846 *hi846)
{
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
if (hi846_write_reg(hi846, HI846_REG_MODE_SELECT, HI846_MODE_STANDBY))
dev_err(&client->dev, "failed to stop stream");
hi846->streaming = 0;
}
static int hi846_set_stream(struct v4l2_subdev *sd, int enable)
{
struct hi846 *hi846 = to_hi846(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0;
mutex_lock(&hi846->mutex);
if (enable) {
ret = pm_runtime_resume_and_get(&client->dev);
if (ret)
goto out;
ret = hi846_start_streaming(hi846);
}
if (!enable || ret) {
hi846_stop_streaming(hi846);
pm_runtime_put(&client->dev);
}
out:
mutex_unlock(&hi846->mutex);
return ret;
}
static int hi846_power_on(struct hi846 *hi846)
{
int ret;
ret = regulator_bulk_enable(HI846_NUM_SUPPLIES, hi846->supplies);
if (ret < 0)
return ret;
ret = clk_prepare_enable(hi846->clock);
if (ret < 0)
goto err_reg;
if (hi846->shutdown_gpio)
gpiod_set_value_cansleep(hi846->shutdown_gpio, 0);
/* 30us = 2400 cycles at 80Mhz */
usleep_range(30, 60);
if (hi846->rst_gpio)
gpiod_set_value_cansleep(hi846->rst_gpio, 0);
usleep_range(30, 60);
return 0;
err_reg:
regulator_bulk_disable(HI846_NUM_SUPPLIES, hi846->supplies);
return ret;
}
static int hi846_power_off(struct hi846 *hi846)
{
if (hi846->rst_gpio)
gpiod_set_value_cansleep(hi846->rst_gpio, 1);
if (hi846->shutdown_gpio)
gpiod_set_value_cansleep(hi846->shutdown_gpio, 1);
clk_disable_unprepare(hi846->clock);
return regulator_bulk_disable(HI846_NUM_SUPPLIES, hi846->supplies);
}
static int __maybe_unused hi846_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct hi846 *hi846 = to_hi846(sd);
return hi846_power_off(hi846);
}
static int __maybe_unused hi846_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct hi846 *hi846 = to_hi846(sd);
return hi846_power_on(hi846);
}
static int hi846_set_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct hi846 *hi846 = to_hi846(sd);
struct v4l2_mbus_framefmt *mf = &format->format;
struct i2c_client *client = v4l2_get_subdevdata(sd);
const struct hi846_datafmt *fmt = hi846_find_datafmt(mf->code);
u32 tgt_fps;
s32 vblank_def, h_blank;
if (!fmt) {
mf->code = hi846_colour_fmts[0].code;
mf->colorspace = hi846_colour_fmts[0].colorspace;
fmt = &hi846_colour_fmts[0];
}
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
*v4l2_subdev_state_get_format(sd_state, format->pad) = *mf;
return 0;
}
if (hi846->nr_lanes == 2) {
if (!hi846->cur_mode->reg_list_2lane.num_of_regs) {
dev_err(&client->dev,
"this mode is not supported for 2 lanes\n");
return -EINVAL;
}
} else {
if (!hi846->cur_mode->reg_list_4lane.num_of_regs) {
dev_err(&client->dev,
"this mode is not supported for 4 lanes\n");
return -EINVAL;
}
}
mutex_lock(&hi846->mutex);
if (hi846->streaming) {
mutex_unlock(&hi846->mutex);
return -EBUSY;
}
hi846->fmt = fmt;
hi846->cur_mode =
v4l2_find_nearest_size(supported_modes,
ARRAY_SIZE(supported_modes),
width, height, mf->width, mf->height);
dev_dbg(&client->dev, "%s: found mode: %dx%d\n", __func__,
hi846->cur_mode->width, hi846->cur_mode->height);
tgt_fps = hi846->cur_mode->fps;
dev_dbg(&client->dev, "%s: target fps: %d\n", __func__, tgt_fps);
mf->width = hi846->cur_mode->width;
mf->height = hi846->cur_mode->height;
mf->code = HI846_MEDIA_BUS_FORMAT;
mf->field = V4L2_FIELD_NONE;
__v4l2_ctrl_s_ctrl(hi846->link_freq, hi846_get_link_freq_index(hi846));
__v4l2_ctrl_s_ctrl_int64(hi846->pixel_rate,
hi846_calc_pixel_rate(hi846));
/* Update limits and set FPS to default */
vblank_def = hi846->cur_mode->frame_len - hi846->cur_mode->height;
__v4l2_ctrl_modify_range(hi846->vblank,
hi846->cur_mode->frame_len -
hi846->cur_mode->height,
HI846_FLL_MAX - hi846->cur_mode->height, 1,
vblank_def);
__v4l2_ctrl_s_ctrl(hi846->vblank, vblank_def);
h_blank = hi846->cur_mode->llp - hi846->cur_mode->width;
__v4l2_ctrl_modify_range(hi846->hblank, h_blank, h_blank, 1,
h_blank);
dev_dbg(&client->dev, "Set fmt w=%d h=%d code=0x%x colorspace=0x%x\n",
mf->width, mf->height,
fmt->code, fmt->colorspace);
mutex_unlock(&hi846->mutex);
return 0;
}
static int hi846_get_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct hi846 *hi846 = to_hi846(sd);
struct v4l2_mbus_framefmt *mf = &format->format;
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
format->format = *v4l2_subdev_state_get_format(sd_state,
format->pad);
return 0;
}
mutex_lock(&hi846->mutex);
mf->code = HI846_MEDIA_BUS_FORMAT;
mf->colorspace = V4L2_COLORSPACE_RAW;
mf->field = V4L2_FIELD_NONE;
mf->width = hi846->cur_mode->width;
mf->height = hi846->cur_mode->height;
mutex_unlock(&hi846->mutex);
dev_dbg(&client->dev,
"Get format w=%d h=%d code=0x%x colorspace=0x%x\n",
mf->width, mf->height, mf->code, mf->colorspace);
return 0;
}
static int hi846_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->pad || code->index > 0)
return -EINVAL;
code->code = HI846_MEDIA_BUS_FORMAT;
return 0;
}
static int hi846_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
if (fse->pad || fse->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
if (fse->code != HI846_MEDIA_BUS_FORMAT) {
dev_err(&client->dev, "frame size enum not matching\n");
return -EINVAL;
}
fse->min_width = supported_modes[fse->index].width;
fse->max_width = supported_modes[fse->index].width;
fse->min_height = supported_modes[fse->index].height;
fse->max_height = supported_modes[fse->index].height;
dev_dbg(&client->dev, "%s: max width: %d max height: %d\n", __func__,
fse->max_width, fse->max_height);
return 0;
}
static int hi846_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
struct hi846 *hi846 = to_hi846(sd);
switch (sel->target) {
case V4L2_SEL_TGT_CROP:
case V4L2_SEL_TGT_CROP_DEFAULT:
mutex_lock(&hi846->mutex);
switch (sel->which) {
case V4L2_SUBDEV_FORMAT_TRY:
sel->r = *v4l2_subdev_state_get_crop(sd_state, sel->pad);
break;
case V4L2_SUBDEV_FORMAT_ACTIVE:
sel->r = hi846->cur_mode->crop;
break;
}
mutex_unlock(&hi846->mutex);
return 0;
case V4L2_SEL_TGT_CROP_BOUNDS:
case V4L2_SEL_TGT_NATIVE_SIZE:
sel->r.top = 0;
sel->r.left = 0;
sel->r.width = 3264;
sel->r.height = 2448;
return 0;
default:
return -EINVAL;
}
}
static int hi846_init_state(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state)
{
struct hi846 *hi846 = to_hi846(sd);
struct v4l2_mbus_framefmt *mf;
mf = v4l2_subdev_state_get_format(sd_state, 0);
mutex_lock(&hi846->mutex);
mf->code = HI846_MEDIA_BUS_FORMAT;
mf->colorspace = V4L2_COLORSPACE_RAW;
mf->field = V4L2_FIELD_NONE;
mf->width = hi846->cur_mode->width;
mf->height = hi846->cur_mode->height;
mutex_unlock(&hi846->mutex);
return 0;
}
static const struct v4l2_subdev_video_ops hi846_video_ops = {
.s_stream = hi846_set_stream,
};
static const struct v4l2_subdev_pad_ops hi846_pad_ops = {
.enum_frame_size = hi846_enum_frame_size,
.enum_mbus_code = hi846_enum_mbus_code,
.set_fmt = hi846_set_format,
.get_fmt = hi846_get_format,
.get_selection = hi846_get_selection,
};
static const struct v4l2_subdev_ops hi846_subdev_ops = {
.video = &hi846_video_ops,
.pad = &hi846_pad_ops,
};
static const struct v4l2_subdev_internal_ops hi846_internal_ops = {
.init_state = hi846_init_state,
};
static const struct media_entity_operations hi846_subdev_entity_ops = {
.link_validate = v4l2_subdev_link_validate,
};
static int hi846_identify_module(struct hi846 *hi846)
{
struct i2c_client *client = v4l2_get_subdevdata(&hi846->sd);
int ret;
u8 hi, lo;
ret = hi846_read_reg(hi846, HI846_REG_CHIP_ID_L, &lo);
if (ret)
return ret;
if (lo != HI846_CHIP_ID_L) {
dev_err(&client->dev, "wrong chip id low byte: %x", lo);
return -ENXIO;
}
ret = hi846_read_reg(hi846, HI846_REG_CHIP_ID_H, &hi);
if (ret)
return ret;
if (hi != HI846_CHIP_ID_H) {
dev_err(&client->dev, "wrong chip id high byte: %x", hi);
return -ENXIO;
}
dev_info(&client->dev, "chip id %02X %02X using %d mipi lanes\n",
hi, lo, hi846->nr_lanes);
return 0;
}
static s64 hi846_check_link_freqs(struct hi846 *hi846,
struct v4l2_fwnode_endpoint *ep)
{
const s64 *freqs = hi846_link_freqs;
int freqs_count = ARRAY_SIZE(hi846_link_freqs);
int i, j;
for (i = 0; i < freqs_count; i++) {
for (j = 0; j < ep->nr_of_link_frequencies; j++)
if (freqs[i] == ep->link_frequencies[j])
break;
if (j == ep->nr_of_link_frequencies)
return freqs[i];
}
return 0;
}
static int hi846_parse_dt(struct hi846 *hi846, struct device *dev)
{
struct fwnode_handle *ep;
struct fwnode_handle *fwnode = dev_fwnode(dev);
struct v4l2_fwnode_endpoint bus_cfg = {
.bus_type = V4L2_MBUS_CSI2_DPHY
};
int ret;
s64 fq;
ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
if (!ep) {
dev_err(dev, "unable to find endpoint node\n");
return -ENXIO;
}
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
fwnode_handle_put(ep);
if (ret) {
dev_err(dev, "failed to parse endpoint node: %d\n", ret);
return ret;
}
if (bus_cfg.bus.mipi_csi2.num_data_lanes != 2 &&
bus_cfg.bus.mipi_csi2.num_data_lanes != 4) {
dev_err(dev, "number of CSI2 data lanes %d is not supported",
bus_cfg.bus.mipi_csi2.num_data_lanes);
ret = -EINVAL;
goto check_hwcfg_error;
}
hi846->nr_lanes = bus_cfg.bus.mipi_csi2.num_data_lanes;
if (!bus_cfg.nr_of_link_frequencies) {
dev_err(dev, "link-frequency property not found in DT\n");
ret = -EINVAL;
goto check_hwcfg_error;
}
/* Check that link frequences for all the modes are in device tree */
fq = hi846_check_link_freqs(hi846, &bus_cfg);
if (fq) {
dev_err(dev, "Link frequency of %lld is not supported\n", fq);
ret = -EINVAL;
goto check_hwcfg_error;
}
v4l2_fwnode_endpoint_free(&bus_cfg);
hi846->rst_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(hi846->rst_gpio)) {
dev_err(dev, "failed to get reset gpio: %pe\n",
hi846->rst_gpio);
return PTR_ERR(hi846->rst_gpio);
}
hi846->shutdown_gpio = devm_gpiod_get_optional(dev, "shutdown",
GPIOD_OUT_LOW);
if (IS_ERR(hi846->shutdown_gpio)) {
dev_err(dev, "failed to get shutdown gpio: %pe\n",
hi846->shutdown_gpio);
return PTR_ERR(hi846->shutdown_gpio);
}
return 0;
check_hwcfg_error:
v4l2_fwnode_endpoint_free(&bus_cfg);
return ret;
}
static int hi846_probe(struct i2c_client *client)
{
struct hi846 *hi846;
int ret;
int i;
u32 mclk_freq;
hi846 = devm_kzalloc(&client->dev, sizeof(*hi846), GFP_KERNEL);
if (!hi846)
return -ENOMEM;
ret = hi846_parse_dt(hi846, &client->dev);
if (ret) {
dev_err(&client->dev, "failed to check HW configuration: %d",
ret);
return ret;
}
hi846->clock = devm_clk_get(&client->dev, NULL);
if (IS_ERR(hi846->clock)) {
dev_err(&client->dev, "failed to get clock: %pe\n",
hi846->clock);
return PTR_ERR(hi846->clock);
}
mclk_freq = clk_get_rate(hi846->clock);
if (mclk_freq != 25000000)
dev_warn(&client->dev,
"External clock freq should be 25000000, not %u.\n",
mclk_freq);
for (i = 0; i < HI846_NUM_SUPPLIES; i++)
hi846->supplies[i].supply = hi846_supply_names[i];
ret = devm_regulator_bulk_get(&client->dev, HI846_NUM_SUPPLIES,
hi846->supplies);
if (ret < 0)
return ret;
v4l2_i2c_subdev_init(&hi846->sd, client, &hi846_subdev_ops);
hi846->sd.internal_ops = &hi846_internal_ops;
mutex_init(&hi846->mutex);
ret = hi846_power_on(hi846);
if (ret)
goto err_mutex;
ret = hi846_identify_module(hi846);
if (ret)
goto err_power_off;
hi846->cur_mode = &supported_modes[0];
ret = hi846_init_controls(hi846);
if (ret) {
dev_err(&client->dev, "failed to init controls: %d", ret);
goto err_power_off;
}
hi846->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
hi846->sd.entity.ops = &hi846_subdev_entity_ops;
hi846->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
hi846->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&hi846->sd.entity, 1, &hi846->pad);
if (ret) {
dev_err(&client->dev, "failed to init entity pads: %d", ret);
goto err_v4l2_ctrl_handler_free;
}
ret = v4l2_async_register_subdev_sensor(&hi846->sd);
if (ret < 0) {
dev_err(&client->dev, "failed to register V4L2 subdev: %d",
ret);
goto err_media_entity_cleanup;
}
pm_runtime_set_active(&client->dev);
pm_runtime_enable(&client->dev);
pm_runtime_idle(&client->dev);
return 0;
err_media_entity_cleanup:
media_entity_cleanup(&hi846->sd.entity);
err_v4l2_ctrl_handler_free:
v4l2_ctrl_handler_free(hi846->sd.ctrl_handler);
err_power_off:
hi846_power_off(hi846);
err_mutex:
mutex_destroy(&hi846->mutex);
return ret;
}
static void hi846_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct hi846 *hi846 = to_hi846(sd);
v4l2_async_unregister_subdev(sd);
media_entity_cleanup(&sd->entity);
v4l2_ctrl_handler_free(sd->ctrl_handler);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev))
hi846_suspend(&client->dev);
pm_runtime_set_suspended(&client->dev);
mutex_destroy(&hi846->mutex);
}
static const struct dev_pm_ops hi846_pm_ops = {
SET_RUNTIME_PM_OPS(hi846_suspend, hi846_resume, NULL)
};
static const struct of_device_id hi846_of_match[] = {
{ .compatible = "hynix,hi846", },
{},
};
MODULE_DEVICE_TABLE(of, hi846_of_match);
static struct i2c_driver hi846_i2c_driver = {
.driver = {
.name = "hi846",
.pm = &hi846_pm_ops,
.of_match_table = hi846_of_match,
},
.probe = hi846_probe,
.remove = hi846_remove,
};
module_i2c_driver(hi846_i2c_driver);
MODULE_AUTHOR("Angus Ainslie <[email protected]>");
MODULE_AUTHOR("Martin Kepplinger <[email protected]>");
MODULE_DESCRIPTION("Hynix HI846 sensor driver");
MODULE_LICENSE("GPL v2");
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