--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+// Copyright (c) 2021 Purism SPC
+
+#include <asm/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/of_graph.h>
+#include <linux/pm_runtime.h>
+#include <linux/pm.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);
+ }
+
+ if (!pm_runtime_get_if_in_use(&client->dev))
+ 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);
+ return ctrl_hdlr->error;
+ }
+
+ ret = v4l2_fwnode_device_parse(&client->dev, &props);
+ if (ret)
+ return ret;
+
+ ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &hi846_ctrl_ops,
+ &props);
+ if (ret)
+ return ret;
+
+ hi846->sd.ctrl_handler = ctrl_hdlr;
+
+ return 0;
+}
+
+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;
+
+ if (hi846->streaming == enable)
+ return 0;
+
+ mutex_lock(&hi846->mutex);
+
+ if (enable) {
+ ret = pm_runtime_get_sync(&client->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&client->dev);
+ 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 void 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);
+ 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);
+
+ if (hi846->streaming)
+ hi846_stop_streaming(hi846);
+
+ hi846_power_off(hi846);
+
+ return 0;
+}
+
+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);
+ int ret;
+
+ ret = hi846_power_on(hi846);
+ if (ret)
+ return ret;
+
+ if (hi846->streaming) {
+ ret = hi846_start_streaming(hi846);
+ if (ret) {
+ dev_err(dev, "%s: start streaming failed: %d\n",
+ __func__, ret);
+ goto error;
+ }
+ }
+
+ return 0;
+
+error:
+ hi846_power_off(hi846);
+ return ret;
+}
+
+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_get_try_format(sd, 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_get_try_format(&hi846->sd,
+ 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:
+ v4l2_subdev_get_try_crop(sd, 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_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state)
+{
+ struct hi846 *hi846 = to_hi846(sd);
+ struct v4l2_mbus_framefmt *mf;
+
+ mf = v4l2_subdev_get_try_format(sd, 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 = {
+ .init_cfg = hi846_init_cfg,
+ .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 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);
+ v4l2_fwnode_endpoint_free(&bus_cfg);
+ return -EINVAL;
+ }
+
+ 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");
+ return -EINVAL;
+ }
+
+ /* 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);
+ return -EINVAL;
+ }
+
+ 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;
+}
+
+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);
+
+ 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 int 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);
+
+ return 0;
+}
+
+static UNIVERSAL_DEV_PM_OPS(hi846_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 = of_match_ptr(hi846_of_match),
+ },
+ .probe_new = hi846_probe,
+ .remove = hi846_remove,
+};
+
+module_i2c_driver(hi846_i2c_driver);
+
+MODULE_AUTHOR("Angus Ainslie <angus@akkea.ca>");
+MODULE_AUTHOR("Martin Kepplinger <martin.kepplinger@puri.sm>");
+MODULE_DESCRIPTION("Hynix HI846 sensor driver");
+MODULE_LICENSE("GPL v2");
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