diff options
Diffstat (limited to 'drivers/media/i2c/hi846.c')
| -rw-r--r-- | drivers/media/i2c/hi846.c | 2202 |
1 files changed, 2202 insertions, 0 deletions
diff --git a/drivers/media/i2c/hi846.c b/drivers/media/i2c/hi846.c new file mode 100644 index 0000000000..fa0038749a --- /dev/null +++ b/drivers/media/i2c/hi846.c @@ -0,0 +1,2202 @@ +// 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/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; + + 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 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); + + if (hi846->streaming) + hi846_stop_streaming(hi846); + + 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); + 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); + 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); + + 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_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + 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 <angus@akkea.ca>"); +MODULE_AUTHOR("Martin Kepplinger <martin.kepplinger@puri.sm>"); +MODULE_DESCRIPTION("Hynix HI846 sensor driver"); +MODULE_LICENSE("GPL v2"); |