// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2020 Kévin L'hôpital <kevin.lhopital@bootlin.com>
* Copyright 2020 Bootlin
* Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of_graph.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/videodev2.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-image-sizes.h>
#include <media/v4l2-mediabus.h>
/* Clock rate */
#define OV8865_EXTCLK_RATE 24000000
/* Register definitions */
/* System */
#define OV8865_SW_STANDBY_REG 0x100
#define OV8865_SW_STANDBY_STREAM_ON BIT(0)
#define OV8865_SW_RESET_REG 0x103
#define OV8865_SW_RESET_RESET BIT(0)
#define OV8865_PLL_CTRL0_REG 0x300
#define OV8865_PLL_CTRL0_PRE_DIV(v) ((v) & GENMASK(2, 0))
#define OV8865_PLL_CTRL1_REG 0x301
#define OV8865_PLL_CTRL1_MUL_H(v) (((v) & GENMASK(9, 8)) >> 8)
#define OV8865_PLL_CTRL2_REG 0x302
#define OV8865_PLL_CTRL2_MUL_L(v) ((v) & GENMASK(7, 0))
#define OV8865_PLL_CTRL3_REG 0x303
#define OV8865_PLL_CTRL3_M_DIV(v) (((v) - 1) & GENMASK(3, 0))
#define OV8865_PLL_CTRL4_REG 0x304
#define OV8865_PLL_CTRL4_MIPI_DIV(v) ((v) & GENMASK(1, 0))
#define OV8865_PLL_CTRL5_REG 0x305
#define OV8865_PLL_CTRL5_SYS_PRE_DIV(v) ((v) & GENMASK(1, 0))
#define OV8865_PLL_CTRL6_REG 0x306
#define OV8865_PLL_CTRL6_SYS_DIV(v) (((v) - 1) & BIT(0))
#define OV8865_PLL_CTRL8_REG 0x308
#define OV8865_PLL_CTRL9_REG 0x309
#define OV8865_PLL_CTRLA_REG 0x30a
#define OV8865_PLL_CTRLA_PRE_DIV_HALF(v) (((v) - 1) & BIT(0))
#define OV8865_PLL_CTRLB_REG 0x30b
#define OV8865_PLL_CTRLB_PRE_DIV(v) ((v) & GENMASK(2, 0))
#define OV8865_PLL_CTRLC_REG 0x30c
#define OV8865_PLL_CTRLC_MUL_H(v) (((v) & GENMASK(9, 8)) >> 8)
#define OV8865_PLL_CTRLD_REG 0x30d
#define OV8865_PLL_CTRLD_MUL_L(v) ((v) & GENMASK(7, 0))
#define OV8865_PLL_CTRLE_REG 0x30e
#define OV8865_PLL_CTRLE_SYS_DIV(v) ((v) & GENMASK(2, 0))
#define OV8865_PLL_CTRLF_REG 0x30f
#define OV8865_PLL_CTRLF_SYS_PRE_DIV(v) (((v) - 1) & GENMASK(3, 0))
#define OV8865_PLL_CTRL10_REG 0x310
#define OV8865_PLL_CTRL11_REG 0x311
#define OV8865_PLL_CTRL12_REG 0x312
#define OV8865_PLL_CTRL12_PRE_DIV_HALF(v) ((((v) - 1) << 4) & BIT(4))
#define OV8865_PLL_CTRL12_DAC_DIV(v) (((v) - 1) & GENMASK(3, 0))
#define OV8865_PLL_CTRL1B_REG 0x31b
#define OV8865_PLL_CTRL1C_REG 0x31c
#define OV8865_PLL_CTRL1E_REG 0x31e
#define OV8865_PLL_CTRL1E_PLL1_NO_LAT BIT(3)
#define OV8865_PAD_OEN0_REG 0x3000
#define OV8865_PAD_OEN2_REG 0x3002
#define OV8865_CLK_RST5_REG 0x3005
#define OV8865_CHIP_ID_HH_REG 0x300a
#define OV8865_CHIP_ID_HH_VALUE 0x00
#define OV8865_CHIP_ID_H_REG 0x300b
#define OV8865_CHIP_ID_H_VALUE 0x88
#define OV8865_CHIP_ID_L_REG 0x300c
#define OV8865_CHIP_ID_L_VALUE 0x65
#define OV8865_PAD_OUT2_REG 0x300d
#define OV8865_PAD_SEL2_REG 0x3010
#define OV8865_PAD_PK_REG 0x3011
#define OV8865_PAD_PK_DRIVE_STRENGTH_1X (0 << 5)
#define OV8865_PAD_PK_DRIVE_STRENGTH_2X (1 << 5)
#define OV8865_PAD_PK_DRIVE_STRENGTH_3X (2 << 5)
#define OV8865_PAD_PK_DRIVE_STRENGTH_4X (3 << 5)
#define OV8865_PUMP_CLK_DIV_REG 0x3015
#define OV8865_PUMP_CLK_DIV_PUMP_N(v) (((v) << 4) & GENMASK(6, 4))
#define OV8865_PUMP_CLK_DIV_PUMP_P(v) ((v) & GENMASK(2, 0))
#define OV8865_MIPI_SC_CTRL0_REG 0x3018
#define OV8865_MIPI_SC_CTRL0_LANES(v) ((((v) - 1) << 5) & \
GENMASK(7, 5))
#define OV8865_MIPI_SC_CTRL0_MIPI_EN BIT(4)
#define OV8865_MIPI_SC_CTRL0_UNKNOWN BIT(1)
#define OV8865_MIPI_SC_CTRL0_LANES_PD_MIPI BIT(0)
#define OV8865_MIPI_SC_CTRL1_REG 0x3019
#define OV8865_CLK_RST0_REG 0x301a
#define OV8865_CLK_RST1_REG 0x301b
#define OV8865_CLK_RST2_REG 0x301c
#define OV8865_CLK_RST3_REG 0x301d
#define OV8865_CLK_RST4_REG 0x301e
#define OV8865_PCLK_SEL_REG 0x3020
#define OV8865_PCLK_SEL_PCLK_DIV_MASK BIT(3)
#define OV8865_PCLK_SEL_PCLK_DIV(v) ((((v) - 1) << 3) & BIT(3))
#define OV8865_MISC_CTRL_REG 0x3021
#define OV8865_MIPI_SC_CTRL2_REG 0x3022
#define OV8865_MIPI_SC_CTRL2_CLK_LANES_PD_MIPI BIT(1)
#define OV8865_MIPI_SC_CTRL2_PD_MIPI_RST_SYNC BIT(0)
#define OV8865_MIPI_BIT_SEL_REG 0x3031
#define OV8865_MIPI_BIT_SEL(v) (((v) << 0) & GENMASK(4, 0))
#define OV8865_CLK_SEL0_REG 0x3032
#define OV8865_CLK_SEL0_PLL1_SYS_SEL(v) (((v) << 7) & BIT(7))
#define OV8865_CLK_SEL1_REG 0x3033
#define OV8865_CLK_SEL1_MIPI_EOF BIT(5)
#define OV8865_CLK_SEL1_UNKNOWN BIT(2)
#define OV8865_CLK_SEL1_PLL_SCLK_SEL_MASK BIT(1)
#define OV8865_CLK_SEL1_PLL_SCLK_SEL(v) (((v) << 1) & BIT(1))
#define OV8865_SCLK_CTRL_REG 0x3106
#define OV8865_SCLK_CTRL_SCLK_DIV(v) (((v) << 4) & GENMASK(7, 4))
#define OV8865_SCLK_CTRL_SCLK_PRE_DIV(v) (((v) << 2) & GENMASK(3, 2))
#define OV8865_SCLK_CTRL_UNKNOWN BIT(0)
/* Exposure/gain */
#define OV8865_EXPOSURE_CTRL_HH_REG 0x3500
#define OV8865_EXPOSURE_CTRL_HH(v) (((v) & GENMASK(19, 16)) >> 16)
#define OV8865_EXPOSURE_CTRL_H_REG 0x3501
#define OV8865_EXPOSURE_CTRL_H(v) (((v) & GENMASK(15, 8)) >> 8)
#define OV8865_EXPOSURE_CTRL_L_REG 0x3502
#define OV8865_EXPOSURE_CTRL_L(v) ((v) & GENMASK(7, 0))
#define OV8865_EXPOSURE_GAIN_MANUAL_REG 0x3503
#define OV8865_GAIN_CTRL_H_REG 0x3508
#define OV8865_GAIN_CTRL_H(v) (((v) & GENMASK(12, 8)) >> 8)
#define OV8865_GAIN_CTRL_L_REG 0x3509
#define OV8865_GAIN_CTRL_L(v) ((v) & GENMASK(7, 0))
/* Timing */
#define OV8865_CROP_START_X_H_REG 0x3800
#define OV8865_CROP_START_X_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_CROP_START_X_L_REG 0x3801
#define OV8865_CROP_START_X_L(v) ((v) & GENMASK(7, 0))
#define OV8865_CROP_START_Y_H_REG 0x3802
#define OV8865_CROP_START_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_CROP_START_Y_L_REG 0x3803
#define OV8865_CROP_START_Y_L(v) ((v) & GENMASK(7, 0))
#define OV8865_CROP_END_X_H_REG 0x3804
#define OV8865_CROP_END_X_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_CROP_END_X_L_REG 0x3805
#define OV8865_CROP_END_X_L(v) ((v) & GENMASK(7, 0))
#define OV8865_CROP_END_Y_H_REG 0x3806
#define OV8865_CROP_END_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_CROP_END_Y_L_REG 0x3807
#define OV8865_CROP_END_Y_L(v) ((v) & GENMASK(7, 0))
#define OV8865_OUTPUT_SIZE_X_H_REG 0x3808
#define OV8865_OUTPUT_SIZE_X_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_OUTPUT_SIZE_X_L_REG 0x3809
#define OV8865_OUTPUT_SIZE_X_L(v) ((v) & GENMASK(7, 0))
#define OV8865_OUTPUT_SIZE_Y_H_REG 0x380a
#define OV8865_OUTPUT_SIZE_Y_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_OUTPUT_SIZE_Y_L_REG 0x380b
#define OV8865_OUTPUT_SIZE_Y_L(v) ((v) & GENMASK(7, 0))
#define OV8865_HTS_H_REG 0x380c
#define OV8865_HTS_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_HTS_L_REG 0x380d
#define OV8865_HTS_L(v) ((v) & GENMASK(7, 0))
#define OV8865_VTS_H_REG 0x380e
#define OV8865_VTS_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_VTS_L_REG 0x380f
#define OV8865_VTS_L(v) ((v) & GENMASK(7, 0))
#define OV8865_OFFSET_X_H_REG 0x3810
#define OV8865_OFFSET_X_H(v) (((v) & GENMASK(15, 8)) >> 8)
#define OV8865_OFFSET_X_L_REG 0x3811
#define OV8865_OFFSET_X_L(v) ((v) & GENMASK(7, 0))
#define OV8865_OFFSET_Y_H_REG 0x3812
#define OV8865_OFFSET_Y_H(v) (((v) & GENMASK(14, 8)) >> 8)
#define OV8865_OFFSET_Y_L_REG 0x3813
#define OV8865_OFFSET_Y_L(v) ((v) & GENMASK(7, 0))
#define OV8865_INC_X_ODD_REG 0x3814
#define OV8865_INC_X_ODD(v) ((v) & GENMASK(4, 0))
#define OV8865_INC_X_EVEN_REG 0x3815
#define OV8865_INC_X_EVEN(v) ((v) & GENMASK(4, 0))
#define OV8865_VSYNC_START_H_REG 0x3816
#define OV8865_VSYNC_START_H(v) (((v) & GENMASK(15, 8)) >> 8)
#define OV8865_VSYNC_START_L_REG 0x3817
#define OV8865_VSYNC_START_L(v) ((v) & GENMASK(7, 0))
#define OV8865_VSYNC_END_H_REG 0x3818
#define OV8865_VSYNC_END_H(v) (((v) & GENMASK(15, 8)) >> 8)
#define OV8865_VSYNC_END_L_REG 0x3819
#define OV8865_VSYNC_END_L(v) ((v) & GENMASK(7, 0))
#define OV8865_HSYNC_FIRST_H_REG 0x381a
#define OV8865_HSYNC_FIRST_H(v) (((v) & GENMASK(15, 8)) >> 8)
#define OV8865_HSYNC_FIRST_L_REG 0x381b
#define OV8865_HSYNC_FIRST_L(v) ((v) & GENMASK(7, 0))
#define OV8865_FORMAT1_REG 0x3820
#define OV8865_FORMAT1_FLIP_VERT_ISP_EN BIT(2)
#define OV8865_FORMAT1_FLIP_VERT_SENSOR_EN BIT(1)
#define OV8865_FORMAT2_REG 0x3821
#define OV8865_FORMAT2_HSYNC_EN BIT(6)
#define OV8865_FORMAT2_FST_VBIN_EN BIT(5)
#define OV8865_FORMAT2_FST_HBIN_EN BIT(4)
#define OV8865_FORMAT2_ISP_HORZ_VAR2_EN BIT(3)
#define OV8865_FORMAT2_FLIP_HORZ_ISP_EN BIT(2)
#define OV8865_FORMAT2_FLIP_HORZ_SENSOR_EN BIT(1)
#define OV8865_FORMAT2_SYNC_HBIN_EN BIT(0)
#define OV8865_INC_Y_ODD_REG 0x382a
#define OV8865_INC_Y_ODD(v) ((v) & GENMASK(4, 0))
#define OV8865_INC_Y_EVEN_REG 0x382b
#define OV8865_INC_Y_EVEN(v) ((v) & GENMASK(4, 0))
#define OV8865_ABLC_NUM_REG 0x3830
#define OV8865_ABLC_NUM(v) ((v) & GENMASK(4, 0))
#define OV8865_ZLINE_NUM_REG 0x3836
#define OV8865_ZLINE_NUM(v) ((v) & GENMASK(4, 0))
#define OV8865_AUTO_SIZE_CTRL_REG 0x3841
#define OV8865_AUTO_SIZE_CTRL_OFFSET_Y_REG BIT(5)
#define OV8865_AUTO_SIZE_CTRL_OFFSET_X_REG BIT(4)
#define OV8865_AUTO_SIZE_CTRL_CROP_END_Y_REG BIT(3)
#define OV8865_AUTO_SIZE_CTRL_CROP_END_X_REG BIT(2)
#define OV8865_AUTO_SIZE_CTRL_CROP_START_Y_REG BIT(1)
#define OV8865_AUTO_SIZE_CTRL_CROP_START_X_REG BIT(0)
#define OV8865_AUTO_SIZE_X_OFFSET_H_REG 0x3842
#define OV8865_AUTO_SIZE_X_OFFSET_L_REG 0x3843
#define OV8865_AUTO_SIZE_Y_OFFSET_H_REG 0x3844
#define OV8865_AUTO_SIZE_Y_OFFSET_L_REG 0x3845
#define OV8865_AUTO_SIZE_BOUNDARIES_REG 0x3846
#define OV8865_AUTO_SIZE_BOUNDARIES_Y(v) (((v) << 4) & GENMASK(7, 4))
#define OV8865_AUTO_SIZE_BOUNDARIES_X(v) ((v) & GENMASK(3, 0))
/* PSRAM */
#define OV8865_PSRAM_CTRL8_REG 0x3f08
/* Black Level */
#define OV8865_BLC_CTRL0_REG 0x4000
#define OV8865_BLC_CTRL0_TRIG_RANGE_EN BIT(7)
#define OV8865_BLC_CTRL0_TRIG_FORMAT_EN BIT(6)
#define OV8865_BLC_CTRL0_TRIG_GAIN_EN BIT(5)
#define OV8865_BLC_CTRL0_TRIG_EXPOSURE_EN BIT(4)
#define OV8865_BLC_CTRL0_TRIG_MANUAL_EN BIT(3)
#define OV8865_BLC_CTRL0_FREEZE_EN BIT(2)
#define OV8865_BLC_CTRL0_ALWAYS_EN BIT(1)
#define OV8865_BLC_CTRL0_FILTER_EN BIT(0)
#define OV8865_BLC_CTRL1_REG 0x4001
#define OV8865_BLC_CTRL1_DITHER_EN BIT(7)
#define OV8865_BLC_CTRL1_ZERO_LINE_DIFF_EN BIT(6)
#define OV8865_BLC_CTRL1_COL_SHIFT_256 (0 << 4)
#define OV8865_BLC_CTRL1_COL_SHIFT_128 (1 << 4)
#define OV8865_BLC_CTRL1_COL_SHIFT_64 (2 << 4)
#define OV8865_BLC_CTRL1_COL_SHIFT_32 (3 << 4)
#define OV8865_BLC_CTRL1_OFFSET_LIMIT_EN BIT(2)
#define OV8865_BLC_CTRL1_COLUMN_CANCEL_EN BIT(1)
#define OV8865_BLC_CTRL2_REG 0x4002
#define OV8865_BLC_CTRL3_REG 0x4003
#define OV8865_BLC_CTRL4_REG 0x4004
#define OV8865_BLC_CTRL5_REG 0x4005
#define OV8865_BLC_CTRL6_REG 0x4006
#define OV8865_BLC_CTRL7_REG 0x4007
#define OV8865_BLC_CTRL8_REG 0x4008
#define OV8865_BLC_CTRL9_REG 0x4009
#define OV8865_BLC_CTRLA_REG 0x400a
#define OV8865_BLC_CTRLB_REG 0x400b
#define OV8865_BLC_CTRLC_REG 0x400c
#define OV8865_BLC_CTRLD_REG 0x400d
#define OV8865_BLC_CTRLD_OFFSET_TRIGGER(v) ((v) & GENMASK(7, 0))
#define OV8865_BLC_CTRL1F_REG 0x401f
#define OV8865_BLC_CTRL1F_RB_REVERSE BIT(3)
#define OV8865_BLC_CTRL1F_INTERPOL_X_EN BIT(2)
#define OV8865_BLC_CTRL1F_INTERPOL_Y_EN BIT(1)
#define OV8865_BLC_ANCHOR_LEFT_START_H_REG 0x4020
#define OV8865_BLC_ANCHOR_LEFT_START_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_BLC_ANCHOR_LEFT_START_L_REG 0x4021
#define OV8865_BLC_ANCHOR_LEFT_START_L(v) ((v) & GENMASK(7, 0))
#define OV8865_BLC_ANCHOR_LEFT_END_H_REG 0x4022
#define OV8865_BLC_ANCHOR_LEFT_END_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_BLC_ANCHOR_LEFT_END_L_REG 0x4023
#define OV8865_BLC_ANCHOR_LEFT_END_L(v) ((v) & GENMASK(7, 0))
#define OV8865_BLC_ANCHOR_RIGHT_START_H_REG 0x4024
#define OV8865_BLC_ANCHOR_RIGHT_START_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_BLC_ANCHOR_RIGHT_START_L_REG 0x4025
#define OV8865_BLC_ANCHOR_RIGHT_START_L(v) ((v) & GENMASK(7, 0))
#define OV8865_BLC_ANCHOR_RIGHT_END_H_REG 0x4026
#define OV8865_BLC_ANCHOR_RIGHT_END_H(v) (((v) & GENMASK(11, 8)) >> 8)
#define OV8865_BLC_ANCHOR_RIGHT_END_L_REG 0x4027
#define OV8865_BLC_ANCHOR_RIGHT_END_L(v) ((v) & GENMASK(7, 0))
#define OV8865_BLC_TOP_ZLINE_START_REG 0x4028
#define OV8865_BLC_TOP_ZLINE_START(v) ((v) & GENMASK(5, 0))
#define OV8865_BLC_TOP_ZLINE_NUM_REG 0x4029
#define OV8865_BLC_TOP_ZLINE_NUM(v) ((v) & GENMASK(4, 0))
#define OV8865_BLC_TOP_BLKLINE_START_REG 0x402a
#define OV8865_BLC_TOP_BLKLINE_START(v) ((v) & GENMASK(5, 0))
#define OV8865_BLC_TOP_BLKLINE_NUM_REG 0x402b
#define OV8865_BLC_TOP_BLKLINE_NUM(v) ((v) & GENMASK(4, 0))
#define OV8865_BLC_BOT_ZLINE_START_REG 0x402c
#define OV8865_BLC_BOT_ZLINE_START(v) ((v) & GENMASK(5, 0))
#define OV8865_BLC_BOT_ZLINE_NUM_REG 0x402d
#define OV8865_BLC_BOT_ZLINE_NUM(v) ((v) & GENMASK(4, 0))
#define OV8865_BLC_BOT_BLKLINE_START_REG 0x402e
#define OV8865_BLC_BOT_BLKLINE_START(v) ((v) & GENMASK(5, 0))
#define OV8865_BLC_BOT_BLKLINE_NUM_REG 0x402f
#define OV8865_BLC_BOT_BLKLINE_NUM(v) ((v) & GENMASK(4, 0))
#define OV8865_BLC_OFFSET_LIMIT_REG 0x4034
#define OV8865_BLC_OFFSET_LIMIT(v) ((v) & GENMASK(7, 0))
/* VFIFO */
#define OV8865_VFIFO_READ_START_H_REG 0x4600
#define OV8865_VFIFO_READ_START_H(v) (((v) & GENMASK(15, 8)) >> 8)
#define OV8865_VFIFO_READ_START_L_REG 0x4601
#define OV8865_VFIFO_READ_START_L(v) ((v) & GENMASK(7, 0))
/* MIPI */
#define OV8865_MIPI_CTRL0_REG 0x4800
#define OV8865_MIPI_CTRL1_REG 0x4801
#define OV8865_MIPI_CTRL2_REG 0x4802
#define OV8865_MIPI_CTRL3_REG 0x4803
#define OV8865_MIPI_CTRL4_REG 0x4804
#define OV8865_MIPI_CTRL5_REG 0x4805
#define OV8865_MIPI_CTRL6_REG 0x4806
#define OV8865_MIPI_CTRL7_REG 0x4807
#define OV8865_MIPI_CTRL8_REG 0x4808
#define OV8865_MIPI_FCNT_MAX_H_REG 0x4810
#define OV8865_MIPI_FCNT_MAX_L_REG 0x4811
#define OV8865_MIPI_CTRL13_REG 0x4813
#define OV8865_MIPI_CTRL14_REG 0x4814
#define OV8865_MIPI_CTRL15_REG 0x4815
#define OV8865_MIPI_EMBEDDED_DT_REG 0x4816
#define OV8865_MIPI_HS_ZERO_MIN_H_REG 0x4818
#define OV8865_MIPI_HS_ZERO_MIN_L_REG 0x4819
#define OV8865_MIPI_HS_TRAIL_MIN_H_REG 0x481a
#define OV8865_MIPI_HS_TRAIL_MIN_L_REG 0x481b
#define OV8865_MIPI_CLK_ZERO_MIN_H_REG 0x481c
#define OV8865_MIPI_CLK_ZERO_MIN_L_REG 0x481d
#define OV8865_MIPI_CLK_PREPARE_MAX_REG 0x481e
#define OV8865_MIPI_CLK_PREPARE_MIN_REG 0x481f
#define OV8865_MIPI_CLK_POST_MIN_H_REG 0x4820
#define OV8865_MIPI_CLK_POST_MIN_L_REG 0x4821
#define OV8865_MIPI_CLK_TRAIL_MIN_H_REG 0x4822
#define OV8865_MIPI_CLK_TRAIL_MIN_L_REG 0x4823
#define OV8865_MIPI_LPX_P_MIN_H_REG 0x4824
#define OV8865_MIPI_LPX_P_MIN_L_REG 0x4825
#define OV8865_MIPI_HS_PREPARE_MIN_REG 0x4826
#define OV8865_MIPI_HS_PREPARE_MAX_REG 0x4827
#define OV8865_MIPI_HS_EXIT_MIN_H_REG 0x4828
#define OV8865_MIPI_HS_EXIT_MIN_L_REG 0x4829
#define OV8865_MIPI_UI_HS_ZERO_MIN_REG 0x482a
#define OV8865_MIPI_UI_HS_TRAIL_MIN_REG 0x482b
#define OV8865_MIPI_UI_CLK_ZERO_MIN_REG 0x482c
#define OV8865_MIPI_UI_CLK_PREPARE_REG 0x482d
#define OV8865_MIPI_UI_CLK_POST_MIN_REG 0x482e
#define OV8865_MIPI_UI_CLK_TRAIL_MIN_REG 0x482f
#define OV8865_MIPI_UI_LPX_P_MIN_REG 0x4830
#define OV8865_MIPI_UI_HS_PREPARE_REG 0x4831
#define OV8865_MIPI_UI_HS_EXIT_MIN_REG 0x4832
#define OV8865_MIPI_PKT_START_SIZE_REG 0x4833
#define OV8865_MIPI_PCLK_PERIOD_REG 0x4837
#define OV8865_MIPI_LP_GPIO0_REG 0x4838
#define OV8865_MIPI_LP_GPIO1_REG 0x4839
#define OV8865_MIPI_CTRL3C_REG 0x483c
#define OV8865_MIPI_LP_GPIO4_REG 0x483d
#define OV8865_MIPI_CTRL4A_REG 0x484a
#define OV8865_MIPI_CTRL4B_REG 0x484b
#define OV8865_MIPI_CTRL4C_REG 0x484c
#define OV8865_MIPI_LANE_TEST_PATTERN_REG 0x484d
#define OV8865_MIPI_FRAME_END_DELAY_REG 0x484e
#define OV8865_MIPI_CLOCK_TEST_PATTERN_REG 0x484f
#define OV8865_MIPI_LANE_SEL01_REG 0x4850
#define OV8865_MIPI_LANE_SEL01_LANE0(v) (((v) << 0) & GENMASK(2, 0))
#define OV8865_MIPI_LANE_SEL01_LANE1(v) (((v) << 4) & GENMASK(6, 4))
#define OV8865_MIPI_LANE_SEL23_REG 0x4851
#define OV8865_MIPI_LANE_SEL23_LANE2(v) (((v) << 0) & GENMASK(2, 0))
#define OV8865_MIPI_LANE_SEL23_LANE3(v) (((v) << 4) & GENMASK(6, 4))
/* ISP */
#define OV8865_ISP_CTRL0_REG 0x5000
#define OV8865_ISP_CTRL0_LENC_EN BIT(7)
#define OV8865_ISP_CTRL0_WHITE_BALANCE_EN BIT(4)
#define OV8865_ISP_CTRL0_DPC_BLACK_EN BIT(2)
#define OV8865_ISP_CTRL0_DPC_WHITE_EN BIT(1)
#define OV8865_ISP_CTRL1_REG 0x5001
#define OV8865_ISP_CTRL1_BLC_EN BIT(0)
#define OV8865_ISP_CTRL2_REG 0x5002
#define OV8865_ISP_CTRL2_DEBUG BIT(3)
#define OV8865_ISP_CTRL2_VARIOPIXEL_EN BIT(2)
#define OV8865_ISP_CTRL2_VSYNC_LATCH_EN BIT(0)
#define OV8865_ISP_CTRL3_REG 0x5003
#define OV8865_ISP_GAIN_RED_H_REG 0x5018
#define OV8865_ISP_GAIN_RED_H(v) (((v) & GENMASK(13, 6)) >> 6)
#define OV8865_ISP_GAIN_RED_L_REG 0x5019
#define OV8865_ISP_GAIN_RED_L(v) ((v) & GENMASK(5, 0))
#define OV8865_ISP_GAIN_GREEN_H_REG 0x501a
#define OV8865_ISP_GAIN_GREEN_H(v) (((v) & GENMASK(13, 6)) >> 6)
#define OV8865_ISP_GAIN_GREEN_L_REG 0x501b
#define OV8865_ISP_GAIN_GREEN_L(v) ((v) & GENMASK(5, 0))
#define OV8865_ISP_GAIN_BLUE_H_REG 0x501c
#define OV8865_ISP_GAIN_BLUE_H(v) (((v) & GENMASK(13, 6)) >> 6)
#define OV8865_ISP_GAIN_BLUE_L_REG 0x501d
#define OV8865_ISP_GAIN_BLUE_L(v) ((v) & GENMASK(5, 0))
/* VarioPixel */
#define OV8865_VAP_CTRL0_REG 0x5900
#define OV8865_VAP_CTRL1_REG 0x5901
#define OV8865_VAP_CTRL1_HSUB_COEF(v) ((((v) - 1) << 2) & \
GENMASK(3, 2))
#define OV8865_VAP_CTRL1_VSUB_COEF(v) (((v) - 1) & GENMASK(1, 0))
/* Pre-DSP */
#define OV8865_PRE_CTRL0_REG 0x5e00
#define OV8865_PRE_CTRL0_PATTERN_EN BIT(7)
#define OV8865_PRE_CTRL0_ROLLING_BAR_EN BIT(6)
#define OV8865_PRE_CTRL0_TRANSPARENT_MODE BIT(5)
#define OV8865_PRE_CTRL0_SQUARES_BW_MODE BIT(4)
#define OV8865_PRE_CTRL0_PATTERN_COLOR_BARS 0
#define OV8865_PRE_CTRL0_PATTERN_RANDOM_DATA 1
#define OV8865_PRE_CTRL0_PATTERN_COLOR_SQUARES 2
#define OV8865_PRE_CTRL0_PATTERN_BLACK 3
/* Macros */
#define ov8865_subdev_sensor(s) \
container_of(s, struct ov8865_sensor, subdev)
#define ov8865_ctrl_subdev(c) \
(&container_of((c)->handler, struct ov8865_sensor, \
ctrls.handler)->subdev)
/* Data structures */
struct ov8865_register_value {
u16 address;
u8 value;
unsigned int delay_ms;
};
/*
* PLL1 Clock Tree:
*
* +-< EXTCLK
* |
* +-+ pll_pre_div_half (0x30a [0])
* |
* +-+ pll_pre_div (0x300 [2:0], special values:
* | 0: 1, 1: 1.5, 3: 2.5, 4: 3, 5: 4, 7: 8)
* +-+ pll_mul (0x301 [1:0], 0x302 [7:0])
* |
* +-+ m_div (0x303 [3:0])
* | |
* | +-> PHY_SCLK
* | |
* | +-+ mipi_div (0x304 [1:0], special values: 0: 4, 1: 5, 2: 6, 3: 8)
* | |
* | +-+ pclk_div (0x3020 [3])
* | |
* | +-> PCLK
* |
* +-+ sys_pre_div (0x305 [1:0], special values: 0: 3, 1: 4, 2: 5, 3: 6)
* |
* +-+ sys_div (0x306 [0])
* |
* +-+ sys_sel (0x3032 [7], 0: PLL1, 1: PLL2)
* |
* +-+ sclk_sel (0x3033 [1], 0: sys_sel, 1: PLL2 DAC_CLK)
* |
* +-+ sclk_pre_div (0x3106 [3:2], special values:
* | 0: 1, 1: 2, 2: 4, 3: 1)
* |
* +-+ sclk_div (0x3106 [7:4], special values: 0: 1)
* |
* +-> SCLK
*/
struct ov8865_pll1_config {
unsigned int pll_pre_div_half;
unsigned int pll_pre_div;
unsigned int pll_mul;
unsigned int m_div;
unsigned int mipi_div;
unsigned int pclk_div;
unsigned int sys_pre_div;
unsigned int sys_div;
};
/*
* PLL2 Clock Tree:
*
* +-< EXTCLK
* |
* +-+ pll_pre_div_half (0x312 [4])
* |
* +-+ pll_pre_div (0x30b [2:0], special values:
* | 0: 1, 1: 1.5, 3: 2.5, 4: 3, 5: 4, 7: 8)
* +-+ pll_mul (0x30c [1:0], 0x30d [7:0])
* |
* +-+ dac_div (0x312 [3:0])
* | |
* | +-> DAC_CLK
* |
* +-+ sys_pre_div (0x30f [3:0])
* |
* +-+ sys_div (0x30e [2:0], special values:
* | 0: 1, 1: 1.5, 3: 2.5, 4: 3, 5: 3.5, 6: 4, 7:5)
* |
* +-+ sys_sel (0x3032 [7], 0: PLL1, 1: PLL2)
* |
* +-+ sclk_sel (0x3033 [1], 0: sys_sel, 1: PLL2 DAC_CLK)
* |
* +-+ sclk_pre_div (0x3106 [3:2], special values:
* | 0: 1, 1: 2, 2: 4, 3: 1)
* |
* +-+ sclk_div (0x3106 [7:4], special values: 0: 1)
* |
* +-> SCLK
*/
struct ov8865_pll2_config {
unsigned int pll_pre_div_half;
unsigned int pll_pre_div;
unsigned int pll_mul;
unsigned int dac_div;
unsigned int sys_pre_div;
unsigned int sys_div;
};
struct ov8865_sclk_config {
unsigned int sys_sel;
unsigned int sclk_sel;
unsigned int sclk_pre_div;
unsigned int sclk_div;
};
/*
* General formulas for (array-centered) mode calculation:
* - photo_array_width = 3296
* - crop_start_x = (photo_array_width - output_size_x) / 2
* - crop_end_x = crop_start_x + offset_x + output_size_x - 1
*
* - photo_array_height = 2480
* - crop_start_y = (photo_array_height - output_size_y) / 2
* - crop_end_y = crop_start_y + offset_y + output_size_y - 1
*/
struct ov8865_mode {
unsigned int crop_start_x;
unsigned int offset_x;
unsigned int output_size_x;
unsigned int crop_end_x;
unsigned int hts;
unsigned int crop_start_y;
unsigned int offset_y;
unsigned int output_size_y;
unsigned int crop_end_y;
unsigned int vts;
/* With auto size, only output and total sizes need to be set. */
bool size_auto;
unsigned int size_auto_boundary_x;
unsigned int size_auto_boundary_y;
bool binning_x;
bool binning_y;
bool variopixel;
unsigned int variopixel_hsub_coef;
unsigned int variopixel_vsub_coef;
/* Bits for the format register, used for binning. */
bool sync_hbin;
bool horz_var2;
unsigned int inc_x_odd;
unsigned int inc_x_even;
unsigned int inc_y_odd;
unsigned int inc_y_even;
unsigned int vfifo_read_start;
unsigned int ablc_num;
unsigned int zline_num;
unsigned int blc_top_zero_line_start;
unsigned int blc_top_zero_line_num;
unsigned int blc_top_black_line_start;
unsigned int blc_top_black_line_num;
unsigned int blc_bottom_zero_line_start;
unsigned int blc_bottom_zero_line_num;
unsigned int blc_bottom_black_line_start;
unsigned int blc_bottom_black_line_num;
u8 blc_col_shift_mask;
unsigned int blc_anchor_left_start;
unsigned int blc_anchor_left_end;
unsigned int blc_anchor_right_start;
unsigned int blc_anchor_right_end;
struct v4l2_fract frame_interval;
const struct ov8865_pll1_config *pll1_config;
const struct ov8865_pll2_config *pll2_config;
const struct ov8865_sclk_config *sclk_config;
const struct ov8865_register_value *register_values;
unsigned int register_values_count;
};
struct ov8865_state {
const struct ov8865_mode *mode;
u32 mbus_code;
bool streaming;
};
struct ov8865_ctrls {
struct v4l2_ctrl *link_freq;
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl_handler handler;
};
struct ov8865_sensor {
struct device *dev;
struct i2c_client *i2c_client;
struct gpio_desc *reset;
struct gpio_desc *powerdown;
struct regulator *avdd;
struct regulator *dvdd;
struct regulator *dovdd;
struct clk *extclk;
struct v4l2_fwnode_endpoint endpoint;
struct v4l2_subdev subdev;
struct media_pad pad;
struct mutex mutex;
struct ov8865_state state;
struct ov8865_ctrls ctrls;
};
/* Static definitions */
/*
* EXTCLK = 24 MHz
* PHY_SCLK = 720 MHz
* MIPI_PCLK = 90 MHz
*/
static const struct ov8865_pll1_config ov8865_pll1_config_native = {
.pll_pre_div_half = 1,
.pll_pre_div = 0,
.pll_mul = 30,
.m_div = 1,
.mipi_div = 3,
.pclk_div = 1,
.sys_pre_div = 1,
.sys_div = 2,
};
/*
* EXTCLK = 24 MHz
* DAC_CLK = 360 MHz
* SCLK = 144 MHz
*/
static const struct ov8865_pll2_config ov8865_pll2_config_native = {
.pll_pre_div_half = 1,
.pll_pre_div = 0,
.pll_mul = 30,
.dac_div = 2,
.sys_pre_div = 5,
.sys_div = 0,
};
/*
* EXTCLK = 24 MHz
* DAC_CLK = 360 MHz
* SCLK = 80 MHz
*/
static const struct ov8865_pll2_config ov8865_pll2_config_binning = {
.pll_pre_div_half = 1,
.pll_pre_div = 0,
.pll_mul = 30,
.dac_div = 2,
.sys_pre_div = 10,
.sys_div = 0,
};
static const struct ov8865_sclk_config ov8865_sclk_config_native = {
.sys_sel = 1,
.sclk_sel = 0,
.sclk_pre_div = 0,
.sclk_div = 0,
};
static const struct ov8865_register_value ov8865_register_values_native[] = {
/* Sensor */
{ 0x3700, 0x48 },
{ 0x3701, 0x18 },
{ 0x3702, 0x50 },
{ 0x3703, 0x32 },
{ 0x3704, 0x28 },
{ 0x3706, 0x70 },
{ 0x3707, 0x08 },
{ 0x3708, 0x48 },
{ 0x3709, 0x80 },
{ 0x370a, 0x01 },
{ 0x370b, 0x70 },
{ 0x370c, 0x07 },
{ 0x3718, 0x14 },
{ 0x3712, 0x44 },
{ 0x371e, 0x31 },
{ 0x371f, 0x7f },
{ 0x3720, 0x0a },
{ 0x3721, 0x0a },
{ 0x3724, 0x04 },
{ 0x3725, 0x04 },
{ 0x3726, 0x0c },
{ 0x3728, 0x0a },
{ 0x3729, 0x03 },
{ 0x372a, 0x06 },
{ 0x372b, 0xa6 },
{ 0x372c, 0xa6 },
{ 0x372d, 0xa6 },
{ 0x372e, 0x0c },
{ 0x372f, 0x20 },
{ 0x3730, 0x02 },
{ 0x3731, 0x0c },
{ 0x3732, 0x28 },
{ 0x3736, 0x30 },
{ 0x373a, 0x04 },
{ 0x373b, 0x18 },
{ 0x373c, 0x14 },
{ 0x373e, 0x06 },
{ 0x375a, 0x0c },
{ 0x375b, 0x26 },
{ 0x375d, 0x04 },
{ 0x375f, 0x28 },
{ 0x3767, 0x1e },
{ 0x3772, 0x46 },
{ 0x3773, 0x04 },
{ 0x3774, 0x2c },
{ 0x3775, 0x13 },
{ 0x3776, 0x10 },
{ 0x37a0, 0x88 },
{ 0x37a1, 0x7a },
{ 0x37a2, 0x7a },
{ 0x37a3, 0x02 },
{ 0x37a5, 0x09 },
{ 0x37a7, 0x88 },
{ 0x37a8, 0xb0 },
{ 0x37a9, 0xb0 },
{ 0x37aa, 0x88 },
{ 0x37ab, 0x5c },
{ 0x37ac, 0x5c },
{ 0x37ad, 0x55 },
{ 0x37ae, 0x19 },
{ 0x37af, 0x19 },
{ 0x37b3, 0x84 },
{ 0x37b4, 0x84 },
{ 0x37b5, 0x66 },
/* PSRAM */
{ OV8865_PSRAM_CTRL8_REG, 0x16 },
/* ADC Sync */
{ 0x4500, 0x68 },
};
static const struct ov8865_register_value ov8865_register_values_binning[] = {
/* Sensor */
{ 0x3700, 0x24 },
{ 0x3701, 0x0c },
{ 0x3702, 0x28 },
{ 0x3703, 0x19 },
{ 0x3704, 0x14 },
{ 0x3706, 0x38 },
{ 0x3707, 0x04 },
{ 0x3708, 0x24 },
{ 0x3709, 0x40 },
{ 0x370a, 0x00 },
{ 0x370b, 0xb8 },
{ 0x370c, 0x04 },
{ 0x3718, 0x12 },
{ 0x3712, 0x42 },
{ 0x371e, 0x19 },
{ 0x371f, 0x40 },
{ 0x3720, 0x05 },
{ 0x3721, 0x05 },
{ 0x3724, 0x02 },
{ 0x3725, 0x02 },
{ 0x3726, 0x06 },
{ 0x3728, 0x05 },
{ 0x3729, 0x02 },
{ 0x372a, 0x03 },
{ 0x372b, 0x53 },
{ 0x372c, 0xa3 },
{ 0x372d, 0x53 },
{ 0x372e, 0x06 },
{ 0x372f, 0x10 },
{ 0x3730, 0x01 },
{ 0x3731, 0x06 },
{ 0x3732, 0x14 },
{ 0x3736, 0x20 },
{ 0x373a, 0x02 },
{ 0x373b, 0x0c },
{ 0x373c, 0x0a },
{ 0x373e, 0x03 },
{ 0x375a, 0x06 },
{ 0x375b, 0x13 },
{ 0x375d, 0x02 },
{ 0x375f, 0x14 },
{ 0x3767, 0x1c },
{ 0x3772, 0x23 },
{ 0x3773, 0x02 },
{ 0x3774, 0x16 },
{ 0x3775, 0x12 },
{ 0x3776, 0x08 },
{ 0x37a0, 0x44 },
{ 0x37a1, 0x3d },
{ 0x37a2, 0x3d },
{ 0x37a3, 0x01 },
{ 0x37a5, 0x08 },
{ 0x37a7, 0x44 },
{ 0x37a8, 0x58 },
{ 0x37a9, 0x58 },
{ 0x37aa, 0x44 },
{ 0x37ab, 0x2e },
{ 0x37ac, 0x2e },
{ 0x37ad, 0x33 },
{ 0x37ae, 0x0d },
{ 0x37af, 0x0d },
{ 0x37b3, 0x42 },
{ 0x37b4, 0x42 },
{ 0x37b5, 0x33 },
/* PSRAM */
{ OV8865_PSRAM_CTRL8_REG, 0x0b },
/* ADC Sync */
{ 0x4500, 0x40 },
};
static const struct ov8865_mode ov8865_modes[] = {
/* 3264x2448 */
{
/* Horizontal */
.output_size_x = 3264,
.hts = 1944,
/* Vertical */
.output_size_y = 2448,
.vts = 2470,
.size_auto = true,
.size_auto_boundary_x = 8,
.size_auto_boundary_y = 4,
/* Subsample increase */
.inc_x_odd = 1,
.inc_x_even = 1,
.inc_y_odd = 1,
.inc_y_even = 1,
/* VFIFO */
.vfifo_read_start = 16,
.ablc_num = 4,
.zline_num = 1,
/* Black Level */
.blc_top_zero_line_start = 0,
.blc_top_zero_line_num = 2,
.blc_top_black_line_start = 4,
.blc_top_black_line_num = 4,
.blc_bottom_zero_line_start = 2,
.blc_bottom_zero_line_num = 2,
.blc_bottom_black_line_start = 8,
.blc_bottom_black_line_num = 2,
.blc_anchor_left_start = 576,
.blc_anchor_left_end = 831,
.blc_anchor_right_start = 1984,
.blc_anchor_right_end = 2239,
/* Frame Interval */
.frame_interval = { 1, 30 },
/* PLL */
.pll1_config = &ov8865_pll1_config_native,
.pll2_config = &ov8865_pll2_config_native,
.sclk_config = &ov8865_sclk_config_native,
/* Registers */
.register_values = ov8865_register_values_native,
.register_values_count =
ARRAY_SIZE(ov8865_register_values_native),
},
/* 3264x1836 */
{
/* Horizontal */
.output_size_x = 3264,
.hts = 2582,
/* Vertical */
.output_size_y = 1836,
.vts = 2002,
.size_auto = true,
.size_auto_boundary_x = 8,
.size_auto_boundary_y = 4,
/* Subsample increase */
.inc_x_odd = 1,
.inc_x_even = 1,
.inc_y_odd = 1,
.inc_y_even = 1,
/* VFIFO */
.vfifo_read_start = 16,
.ablc_num = 4,
.zline_num = 1,
/* Black Level */
.blc_top_zero_line_start = 0,
.blc_top_zero_line_num = 2,
.blc_top_black_line_start = 4,
.blc_top_black_line_num = 4,
.blc_bottom_zero_line_start = 2,
.blc_bottom_zero_line_num = 2,
.blc_bottom_black_line_start = 8,
.blc_bottom_black_line_num = 2,
.blc_anchor_left_start = 576,
.blc_anchor_left_end = 831,
.blc_anchor_right_start = 1984,
.blc_anchor_right_end = 2239,
/* Frame Interval */
.frame_interval = { 1, 30 },
/* PLL */
.pll1_config = &ov8865_pll1_config_native,
.pll2_config = &ov8865_pll2_config_native,
.sclk_config = &ov8865_sclk_config_native,
/* Registers */
.register_values = ov8865_register_values_native,
.register_values_count =
ARRAY_SIZE(ov8865_register_values_native),
},
/* 1632x1224 */
{
/* Horizontal */
.output_size_x = 1632,
.hts = 1923,
/* Vertical */
.output_size_y = 1224,
.vts = 1248,
.size_auto = true,
.size_auto_boundary_x = 8,
.size_auto_boundary_y = 8,
/* Subsample increase */
.inc_x_odd = 3,
.inc_x_even = 1,
.inc_y_odd = 3,
.inc_y_even = 1,
/* Binning */
.binning_y = true,
.sync_hbin = true,
/* VFIFO */
.vfifo_read_start = 116,
.ablc_num = 8,
.zline_num = 2,
/* Black Level */
.blc_top_zero_line_start = 0,
.blc_top_zero_line_num = 2,
.blc_top_black_line_start = 4,
.blc_top_black_line_num = 4,
.blc_bottom_zero_line_start = 2,
.blc_bottom_zero_line_num = 2,
.blc_bottom_black_line_start = 8,
.blc_bottom_black_line_num = 2,
.blc_anchor_left_start = 288,
.blc_anchor_left_end = 415,
.blc_anchor_right_start = 992,
.blc_anchor_right_end = 1119,
/* Frame Interval */
.frame_interval = { 1, 30 },
/* PLL */
.pll1_config = &ov8865_pll1_config_native,
.pll2_config = &ov8865_pll2_config_binning,
.sclk_config = &ov8865_sclk_config_native,
/* Registers */
.register_values = ov8865_register_values_binning,
.register_values_count =
ARRAY_SIZE(ov8865_register_values_binning),
},
/* 800x600 (SVGA) */
{
/* Horizontal */
.output_size_x = 800,
.hts = 1250,
/* Vertical */
.output_size_y = 600,
.vts = 640,
.size_auto = true,
.size_auto_boundary_x = 8,
.size_auto_boundary_y = 8,
/* Subsample increase */
.inc_x_odd = 3,
.inc_x_even = 1,
.inc_y_odd = 5,
.inc_y_even = 3,
/* Binning */
.binning_y = true,
.variopixel = true,
.variopixel_hsub_coef = 2,
.variopixel_vsub_coef = 1,
.sync_hbin = true,
.horz_var2 = true,
/* VFIFO */
.vfifo_read_start = 80,
.ablc_num = 8,
.zline_num = 2,
/* Black Level */
.blc_top_zero_line_start = 0,
.blc_top_zero_line_num = 2,
.blc_top_black_line_start = 2,
.blc_top_black_line_num = 2,
.blc_bottom_zero_line_start = 0,
.blc_bottom_zero_line_num = 0,
.blc_bottom_black_line_start = 4,
.blc_bottom_black_line_num = 2,
.blc_col_shift_mask = OV8865_BLC_CTRL1_COL_SHIFT_128,
.blc_anchor_left_start = 288,
.blc_anchor_left_end = 415,
.blc_anchor_right_start = 992,
.blc_anchor_right_end = 1119,
/* Frame Interval */
.frame_interval = { 1, 90 },
/* PLL */
.pll1_config = &ov8865_pll1_config_native,
.pll2_config = &ov8865_pll2_config_binning,
.sclk_config = &ov8865_sclk_config_native,
/* Registers */
.register_values = ov8865_register_values_binning,
.register_values_count =
ARRAY_SIZE(ov8865_register_values_binning),
},
};
static const u32 ov8865_mbus_codes[] = {
MEDIA_BUS_FMT_SBGGR10_1X10,
};
static const struct ov8865_register_value ov8865_init_sequence[] = {
/* Analog */
{ 0x3604, 0x04 },
{ 0x3602, 0x30 },
{ 0x3605, 0x00 },
{ 0x3607, 0x20 },
{ 0x3608, 0x11 },
{ 0x3609, 0x68 },
{ 0x360a, 0x40 },
{ 0x360c, 0xdd },
{ 0x360e, 0x0c },
{ 0x3610, 0x07 },
{ 0x3612, 0x86 },
{ 0x3613, 0x58 },
{ 0x3614, 0x28 },
{ 0x3617, 0x40 },
{ 0x3618, 0x5a },
{ 0x3619, 0x9b },
{ 0x361c, 0x00 },
{ 0x361d, 0x60 },
{ 0x3631, 0x60 },
{ 0x3633, 0x10 },
{ 0x3634, 0x10 },
{ 0x3635, 0x10 },
{ 0x3636, 0x10 },
{ 0x3638, 0xff },
{ 0x3641, 0x55 },
{ 0x3646, 0x86 },
{ 0x3647, 0x27 },
{ 0x364a, 0x1b },
/* Sensor */
{ 0x3700, 0x24 },
{ 0x3701, 0x0c },
{ 0x3702, 0x28 },
{ 0x3703, 0x19 },
{ 0x3704, 0x14 },
{ 0x3705, 0x00 },
{ 0x3706, 0x38 },
{ 0x3707, 0x04 },
{ 0x3708, 0x24 },
{ 0x3709, 0x40 },
{ 0x370a, 0x00 },
{ 0x370b, 0xb8 },
{ 0x370c, 0x04 },
{ 0x3718, 0x12 },
{ 0x3719, 0x31 },
{ 0x3712, 0x42 },
{ 0x3714, 0x12 },
{ 0x371e, 0x19 },
{ 0x371f, 0x40 },
{ 0x3720, 0x05 },
{ 0x3721, 0x05 },
{ 0x3724, 0x02 },
{ 0x3725, 0x02 },
{ 0x3726, 0x06 },
{ 0x3728, 0x05 },
{ 0x3729, 0x02 },
{ 0x372a, 0x03 },
{ 0x372b, 0x53 },
{ 0x372c, 0xa3 },
{ 0x372d, 0x53 },
{ 0x372e, 0x06 },
{ 0x372f, 0x10 },
{ 0x3730, 0x01 },
{ 0x3731, 0x06 },
{ 0x3732, 0x14 },
{ 0x3733, 0x10 },
{ 0x3734, 0x40 },
{ 0x3736, 0x20 },
{ 0x373a, 0x02 },
{ 0x373b, 0x0c },
{ 0x373c, 0x0a },
{ 0x373e, 0x03 },
{ 0x3755, 0x40 },
{ 0x3758, 0x00 },
{ 0x3759, 0x4c },
{ 0x375a, 0x06 },
{ 0x375b, 0x13 },
{ 0x375c, 0x40 },
{ 0x375d, 0x02 },
{ 0x375e, 0x00 },
{ 0x375f, 0x14 },
{ 0x3767, 0x1c },
{ 0x3768, 0x04 },
{ 0x3769, 0x20 },
{ 0x376c, 0xc0 },
{ 0x376d, 0xc0 },
{ 0x376a, 0x08 },
{ 0x3761, 0x00 },
{ 0x3762, 0x00 },
{ 0x3763, 0x00 },
{ 0x3766, 0xff },
{ 0x376b, 0x42 },
{ 0x3772, 0x23 },
{ 0x3773, 0x02 },
{ 0x3774, 0x16 },
{ 0x3775, 0x12 },
{ 0x3776, 0x08 },
{ 0x37a0, 0x44 },
{ 0x37a1, 0x3d },
{ 0x37a2, 0x3d },
{ 0x37a3, 0x01 },
{ 0x37a4, 0x00 },
{ 0x37a5, 0x08 },
{ 0x37a6, 0x00 },
{ 0x37a7, 0x44 },
{ 0x37a8, 0x58 },
{ 0x37a9, 0x58 },
{ 0x3760, 0x00 },
{ 0x376f, 0x01 },
{ 0x37aa, 0x44 },
{ 0x37ab, 0x2e },
{ 0x37ac, 0x2e },
{ 0x37ad, 0x33 },
{ 0x37ae, 0x0d },
{ 0x37af, 0x0d },
{ 0x37b0, 0x00 },
{ 0x37b1, 0x00 },
{ 0x37b2, 0x00 },
{ 0x37b3, 0x42 },
{ 0x37b4, 0x42 },
{ 0x37b5, 0x33 },
{ 0x37b6, 0x00 },
{ 0x37b7, 0x00 },
{ 0x37b8, 0x00 },
{ 0x37b9, 0xff },
/* ADC Sync */
{ 0x4503, 0x10 },
};
static const s64 ov8865_link_freq_menu[] = {
360000000,
};
static const char *const ov8865_test_pattern_menu[] = {
"Disabled",
"Random data",
"Color bars",
"Color bars with rolling bar",
"Color squares",
"Color squares with rolling bar"
};
static const u8 ov8865_test_pattern_bits[] = {
0,
OV8865_PRE_CTRL0_PATTERN_EN | OV8865_PRE_CTRL0_PATTERN_RANDOM_DATA,
OV8865_PRE_CTRL0_PATTERN_EN | OV8865_PRE_CTRL0_PATTERN_COLOR_BARS,
OV8865_PRE_CTRL0_PATTERN_EN | OV8865_PRE_CTRL0_ROLLING_BAR_EN |
OV8865_PRE_CTRL0_PATTERN_COLOR_BARS,
OV8865_PRE_CTRL0_PATTERN_EN | OV8865_PRE_CTRL0_PATTERN_COLOR_SQUARES,
OV8865_PRE_CTRL0_PATTERN_EN | OV8865_PRE_CTRL0_ROLLING_BAR_EN |
OV8865_PRE_CTRL0_PATTERN_COLOR_SQUARES,
};
/* Input/Output */
static int ov8865_read(struct ov8865_sensor *sensor, u16 address, u8 *value)
{
unsigned char data[2] = { address >> 8, address & 0xff };
struct i2c_client *client = sensor->i2c_client;
int ret;
ret = i2c_master_send(client, data, sizeof(data));
if (ret < 0) {
dev_dbg(&client->dev, "i2c send error at address %#04x\n",
address);
return ret;
}
ret = i2c_master_recv(client, value, 1);
if (ret < 0) {
dev_dbg(&client->dev, "i2c recv error at address %#04x\n",
address);
return ret;
}
return 0;
}
static int ov8865_write(struct ov8865_sensor *sensor, u16 address, u8 value)
{
unsigned char data[3] = { address >> 8, address & 0xff, value };
struct i2c_client *client = sensor->i2c_client;
int ret;
ret = i2c_master_send(client, data, sizeof(data));
if (ret < 0) {
dev_dbg(&client->dev, "i2c send error at address %#04x\n",
address);
return ret;
}
return 0;
}
static int ov8865_write_sequence(struct ov8865_sensor *sensor,
const struct ov8865_register_value *sequence,
unsigned int sequence_count)
{
unsigned int i;
int ret = 0;
for (i = 0; i < sequence_count; i++) {
ret = ov8865_write(sensor, sequence[i].address,
sequence[i].value);
if (ret)
break;
if (sequence[i].delay_ms)
msleep(sequence[i].delay_ms);
}
return ret;
}
static int ov8865_update_bits(struct ov8865_sensor *sensor, u16 address,
u8 mask, u8 bits)
{
u8 value = 0;
int ret;
ret = ov8865_read(sensor, address, &value);
if (ret)
return ret;
value &= ~mask;
value |= bits;
return ov8865_write(sensor, address, value);
}
/* Sensor */
static int ov8865_sw_reset(struct ov8865_sensor *sensor)
{
return ov8865_write(sensor, OV8865_SW_RESET_REG, OV8865_SW_RESET_RESET);
}
static int ov8865_sw_standby(struct ov8865_sensor *sensor, int standby)
{
u8 value = 0;
if (!standby)
value = OV8865_SW_STANDBY_STREAM_ON;
return ov8865_write(sensor, OV8865_SW_STANDBY_REG, value);
}
static int ov8865_chip_id_check(struct ov8865_sensor *sensor)
{
u16 regs[] = { OV8865_CHIP_ID_HH_REG, OV8865_CHIP_ID_H_REG,
OV8865_CHIP_ID_L_REG };
u8 values[] = { OV8865_CHIP_ID_HH_VALUE, OV8865_CHIP_ID_H_VALUE,
OV8865_CHIP_ID_L_VALUE };
unsigned int i;
u8 value;
int ret;
for (i = 0; i < ARRAY_SIZE(regs); i++) {
ret = ov8865_read(sensor, regs[i], &value);
if (ret < 0)
return ret;
if (value != values[i]) {
dev_err(sensor->dev,
"chip id value mismatch: %#x instead of %#x\n",
value, values[i]);
return -EINVAL;
}
}
return 0;
}
static int ov8865_charge_pump_configure(struct ov8865_sensor *sensor)
{
return ov8865_write(sensor, OV8865_PUMP_CLK_DIV_REG,
OV8865_PUMP_CLK_DIV_PUMP_P(1));
}
static int ov8865_mipi_configure(struct ov8865_sensor *sensor)
{
struct v4l2_fwnode_bus_mipi_csi2 *bus_mipi_csi2 =
&sensor->endpoint.bus.mipi_csi2;
unsigned int lanes_count = bus_mipi_csi2->num_data_lanes;
int ret;
ret = ov8865_write(sensor, OV8865_MIPI_SC_CTRL0_REG,
OV8865_MIPI_SC_CTRL0_LANES(lanes_count) |
OV8865_MIPI_SC_CTRL0_MIPI_EN |
OV8865_MIPI_SC_CTRL0_UNKNOWN);
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_MIPI_SC_CTRL2_REG,
OV8865_MIPI_SC_CTRL2_PD_MIPI_RST_SYNC);
if (ret)
return ret;
if (lanes_count >= 2) {
ret = ov8865_write(sensor, OV8865_MIPI_LANE_SEL01_REG,
OV8865_MIPI_LANE_SEL01_LANE0(0) |
OV8865_MIPI_LANE_SEL01_LANE1(1));
if (ret)
return ret;
}
if (lanes_count >= 4) {
ret = ov8865_write(sensor, OV8865_MIPI_LANE_SEL23_REG,
OV8865_MIPI_LANE_SEL23_LANE2(2) |
OV8865_MIPI_LANE_SEL23_LANE3(3));
if (ret)
return ret;
}
ret = ov8865_update_bits(sensor, OV8865_CLK_SEL1_REG,
OV8865_CLK_SEL1_MIPI_EOF,
OV8865_CLK_SEL1_MIPI_EOF);
if (ret)
return ret;
/*
* This value might need to change depending on PCLK rate,
* but it's unclear how. This value seems to generally work
* while the default value was found to cause transmission errors.
*/
return ov8865_write(sensor, OV8865_MIPI_PCLK_PERIOD_REG, 0x16);
}
static int ov8865_black_level_configure(struct ov8865_sensor *sensor)
{
int ret;
/* Trigger BLC on relevant events and enable filter. */
ret = ov8865_write(sensor, OV8865_BLC_CTRL0_REG,
OV8865_BLC_CTRL0_TRIG_RANGE_EN |
OV8865_BLC_CTRL0_TRIG_FORMAT_EN |
OV8865_BLC_CTRL0_TRIG_GAIN_EN |
OV8865_BLC_CTRL0_TRIG_EXPOSURE_EN |
OV8865_BLC_CTRL0_FILTER_EN);
if (ret)
return ret;
/* Lower BLC offset trigger threshold. */
ret = ov8865_write(sensor, OV8865_BLC_CTRLD_REG,
OV8865_BLC_CTRLD_OFFSET_TRIGGER(16));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_CTRL1F_REG, 0);
if (ret)
return ret;
/* Increase BLC offset maximum limit. */
return ov8865_write(sensor, OV8865_BLC_OFFSET_LIMIT_REG,
OV8865_BLC_OFFSET_LIMIT(63));
}
static int ov8865_isp_configure(struct ov8865_sensor *sensor)
{
int ret;
/* Disable lens correction. */
ret = ov8865_write(sensor, OV8865_ISP_CTRL0_REG,
OV8865_ISP_CTRL0_WHITE_BALANCE_EN |
OV8865_ISP_CTRL0_DPC_BLACK_EN |
OV8865_ISP_CTRL0_DPC_WHITE_EN);
if (ret)
return ret;
return ov8865_write(sensor, OV8865_ISP_CTRL1_REG,
OV8865_ISP_CTRL1_BLC_EN);
}
static unsigned long ov8865_mode_pll1_rate(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode)
{
const struct ov8865_pll1_config *config = mode->pll1_config;
unsigned long extclk_rate;
unsigned long pll1_rate;
extclk_rate = clk_get_rate(sensor->extclk);
pll1_rate = extclk_rate * config->pll_mul / config->pll_pre_div_half;
switch (config->pll_pre_div) {
case 0:
break;
case 1:
pll1_rate *= 3;
pll1_rate /= 2;
break;
case 3:
pll1_rate *= 5;
pll1_rate /= 2;
break;
case 4:
pll1_rate /= 3;
break;
case 5:
pll1_rate /= 4;
break;
case 7:
pll1_rate /= 8;
break;
default:
pll1_rate /= config->pll_pre_div;
break;
}
return pll1_rate;
}
static int ov8865_mode_pll1_configure(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode,
u32 mbus_code)
{
const struct ov8865_pll1_config *config = mode->pll1_config;
u8 value;
int ret;
switch (mbus_code) {
case MEDIA_BUS_FMT_SBGGR10_1X10:
value = OV8865_MIPI_BIT_SEL(10);
break;
default:
return -EINVAL;
}
ret = ov8865_write(sensor, OV8865_MIPI_BIT_SEL_REG, value);
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRLA_REG,
OV8865_PLL_CTRLA_PRE_DIV_HALF(config->pll_pre_div_half));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRL0_REG,
OV8865_PLL_CTRL0_PRE_DIV(config->pll_pre_div));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRL1_REG,
OV8865_PLL_CTRL1_MUL_H(config->pll_mul));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRL2_REG,
OV8865_PLL_CTRL2_MUL_L(config->pll_mul));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRL3_REG,
OV8865_PLL_CTRL3_M_DIV(config->m_div));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRL4_REG,
OV8865_PLL_CTRL4_MIPI_DIV(config->mipi_div));
if (ret)
return ret;
ret = ov8865_update_bits(sensor, OV8865_PCLK_SEL_REG,
OV8865_PCLK_SEL_PCLK_DIV_MASK,
OV8865_PCLK_SEL_PCLK_DIV(config->pclk_div));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRL5_REG,
OV8865_PLL_CTRL5_SYS_PRE_DIV(config->sys_pre_div));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRL6_REG,
OV8865_PLL_CTRL6_SYS_DIV(config->sys_div));
if (ret)
return ret;
return ov8865_update_bits(sensor, OV8865_PLL_CTRL1E_REG,
OV8865_PLL_CTRL1E_PLL1_NO_LAT,
OV8865_PLL_CTRL1E_PLL1_NO_LAT);
}
static int ov8865_mode_pll2_configure(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode)
{
const struct ov8865_pll2_config *config = mode->pll2_config;
int ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRL12_REG,
OV8865_PLL_CTRL12_PRE_DIV_HALF(config->pll_pre_div_half) |
OV8865_PLL_CTRL12_DAC_DIV(config->dac_div));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRLB_REG,
OV8865_PLL_CTRLB_PRE_DIV(config->pll_pre_div));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRLC_REG,
OV8865_PLL_CTRLC_MUL_H(config->pll_mul));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRLD_REG,
OV8865_PLL_CTRLD_MUL_L(config->pll_mul));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_PLL_CTRLF_REG,
OV8865_PLL_CTRLF_SYS_PRE_DIV(config->sys_pre_div));
if (ret)
return ret;
return ov8865_write(sensor, OV8865_PLL_CTRLE_REG,
OV8865_PLL_CTRLE_SYS_DIV(config->sys_div));
}
static int ov8865_mode_sclk_configure(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode)
{
const struct ov8865_sclk_config *config = mode->sclk_config;
int ret;
ret = ov8865_write(sensor, OV8865_CLK_SEL0_REG,
OV8865_CLK_SEL0_PLL1_SYS_SEL(config->sys_sel));
if (ret)
return ret;
ret = ov8865_update_bits(sensor, OV8865_CLK_SEL1_REG,
OV8865_CLK_SEL1_PLL_SCLK_SEL_MASK,
OV8865_CLK_SEL1_PLL_SCLK_SEL(config->sclk_sel));
if (ret)
return ret;
return ov8865_write(sensor, OV8865_SCLK_CTRL_REG,
OV8865_SCLK_CTRL_UNKNOWN |
OV8865_SCLK_CTRL_SCLK_DIV(config->sclk_div) |
OV8865_SCLK_CTRL_SCLK_PRE_DIV(config->sclk_pre_div));
}
static int ov8865_mode_binning_configure(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode)
{
unsigned int variopixel_hsub_coef, variopixel_vsub_coef;
u8 value;
int ret;
ret = ov8865_write(sensor, OV8865_FORMAT1_REG, 0);
if (ret)
return ret;
value = OV8865_FORMAT2_HSYNC_EN;
if (mode->binning_x)
value |= OV8865_FORMAT2_FST_HBIN_EN;
if (mode->binning_y)
value |= OV8865_FORMAT2_FST_VBIN_EN;
if (mode->sync_hbin)
value |= OV8865_FORMAT2_SYNC_HBIN_EN;
if (mode->horz_var2)
value |= OV8865_FORMAT2_ISP_HORZ_VAR2_EN;
ret = ov8865_write(sensor, OV8865_FORMAT2_REG, value);
if (ret)
return ret;
ret = ov8865_update_bits(sensor, OV8865_ISP_CTRL2_REG,
OV8865_ISP_CTRL2_VARIOPIXEL_EN,
mode->variopixel ?
OV8865_ISP_CTRL2_VARIOPIXEL_EN : 0);
if (ret)
return ret;
if (mode->variopixel) {
/* VarioPixel coefs needs to be > 1. */
variopixel_hsub_coef = mode->variopixel_hsub_coef;
variopixel_vsub_coef = mode->variopixel_vsub_coef;
} else {
variopixel_hsub_coef = 1;
variopixel_vsub_coef = 1;
}
ret = ov8865_write(sensor, OV8865_VAP_CTRL1_REG,
OV8865_VAP_CTRL1_HSUB_COEF(variopixel_hsub_coef) |
OV8865_VAP_CTRL1_VSUB_COEF(variopixel_vsub_coef));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_INC_X_ODD_REG,
OV8865_INC_X_ODD(mode->inc_x_odd));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_INC_X_EVEN_REG,
OV8865_INC_X_EVEN(mode->inc_x_even));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_INC_Y_ODD_REG,
OV8865_INC_Y_ODD(mode->inc_y_odd));
if (ret)
return ret;
return ov8865_write(sensor, OV8865_INC_Y_EVEN_REG,
OV8865_INC_Y_EVEN(mode->inc_y_even));
}
static int ov8865_mode_black_level_configure(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode)
{
int ret;
/* Note that a zero value for blc_col_shift_mask is the default 256. */
ret = ov8865_write(sensor, OV8865_BLC_CTRL1_REG,
mode->blc_col_shift_mask |
OV8865_BLC_CTRL1_OFFSET_LIMIT_EN);
if (ret)
return ret;
/* BLC top zero line */
ret = ov8865_write(sensor, OV8865_BLC_TOP_ZLINE_START_REG,
OV8865_BLC_TOP_ZLINE_START(mode->blc_top_zero_line_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_TOP_ZLINE_NUM_REG,
OV8865_BLC_TOP_ZLINE_NUM(mode->blc_top_zero_line_num));
if (ret)
return ret;
/* BLC top black line */
ret = ov8865_write(sensor, OV8865_BLC_TOP_BLKLINE_START_REG,
OV8865_BLC_TOP_BLKLINE_START(mode->blc_top_black_line_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_TOP_BLKLINE_NUM_REG,
OV8865_BLC_TOP_BLKLINE_NUM(mode->blc_top_black_line_num));
if (ret)
return ret;
/* BLC bottom zero line */
ret = ov8865_write(sensor, OV8865_BLC_BOT_ZLINE_START_REG,
OV8865_BLC_BOT_ZLINE_START(mode->blc_bottom_zero_line_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_BOT_ZLINE_NUM_REG,
OV8865_BLC_BOT_ZLINE_NUM(mode->blc_bottom_zero_line_num));
if (ret)
return ret;
/* BLC bottom black line */
ret = ov8865_write(sensor, OV8865_BLC_BOT_BLKLINE_START_REG,
OV8865_BLC_BOT_BLKLINE_START(mode->blc_bottom_black_line_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_BOT_BLKLINE_NUM_REG,
OV8865_BLC_BOT_BLKLINE_NUM(mode->blc_bottom_black_line_num));
if (ret)
return ret;
/* BLC anchor */
ret = ov8865_write(sensor, OV8865_BLC_ANCHOR_LEFT_START_H_REG,
OV8865_BLC_ANCHOR_LEFT_START_H(mode->blc_anchor_left_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_ANCHOR_LEFT_START_L_REG,
OV8865_BLC_ANCHOR_LEFT_START_L(mode->blc_anchor_left_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_ANCHOR_LEFT_END_H_REG,
OV8865_BLC_ANCHOR_LEFT_END_H(mode->blc_anchor_left_end));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_ANCHOR_LEFT_END_L_REG,
OV8865_BLC_ANCHOR_LEFT_END_L(mode->blc_anchor_left_end));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_ANCHOR_RIGHT_START_H_REG,
OV8865_BLC_ANCHOR_RIGHT_START_H(mode->blc_anchor_right_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_ANCHOR_RIGHT_START_L_REG,
OV8865_BLC_ANCHOR_RIGHT_START_L(mode->blc_anchor_right_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_BLC_ANCHOR_RIGHT_END_H_REG,
OV8865_BLC_ANCHOR_RIGHT_END_H(mode->blc_anchor_right_end));
if (ret)
return ret;
return ov8865_write(sensor, OV8865_BLC_ANCHOR_RIGHT_END_L_REG,
OV8865_BLC_ANCHOR_RIGHT_END_L(mode->blc_anchor_right_end));
}
static int ov8865_mode_configure(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode, u32 mbus_code)
{
int ret;
/* Output Size X */
ret = ov8865_write(sensor, OV8865_OUTPUT_SIZE_X_H_REG,
OV8865_OUTPUT_SIZE_X_H(mode->output_size_x));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_OUTPUT_SIZE_X_L_REG,
OV8865_OUTPUT_SIZE_X_L(mode->output_size_x));
if (ret)
return ret;
/* Horizontal Total Size */
ret = ov8865_write(sensor, OV8865_HTS_H_REG, OV8865_HTS_H(mode->hts));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_HTS_L_REG, OV8865_HTS_L(mode->hts));
if (ret)
return ret;
/* Output Size Y */
ret = ov8865_write(sensor, OV8865_OUTPUT_SIZE_Y_H_REG,
OV8865_OUTPUT_SIZE_Y_H(mode->output_size_y));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_OUTPUT_SIZE_Y_L_REG,
OV8865_OUTPUT_SIZE_Y_L(mode->output_size_y));
if (ret)
return ret;
/* Vertical Total Size */
ret = ov8865_write(sensor, OV8865_VTS_H_REG, OV8865_VTS_H(mode->vts));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_VTS_L_REG, OV8865_VTS_L(mode->vts));
if (ret)
return ret;
if (mode->size_auto) {
/* Auto Size */
ret = ov8865_write(sensor, OV8865_AUTO_SIZE_CTRL_REG,
OV8865_AUTO_SIZE_CTRL_OFFSET_Y_REG |
OV8865_AUTO_SIZE_CTRL_OFFSET_X_REG |
OV8865_AUTO_SIZE_CTRL_CROP_END_Y_REG |
OV8865_AUTO_SIZE_CTRL_CROP_END_X_REG |
OV8865_AUTO_SIZE_CTRL_CROP_START_Y_REG |
OV8865_AUTO_SIZE_CTRL_CROP_START_X_REG);
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_AUTO_SIZE_BOUNDARIES_REG,
OV8865_AUTO_SIZE_BOUNDARIES_Y(mode->size_auto_boundary_y) |
OV8865_AUTO_SIZE_BOUNDARIES_X(mode->size_auto_boundary_x));
if (ret)
return ret;
} else {
/* Crop Start X */
ret = ov8865_write(sensor, OV8865_CROP_START_X_H_REG,
OV8865_CROP_START_X_H(mode->crop_start_x));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_CROP_START_X_L_REG,
OV8865_CROP_START_X_L(mode->crop_start_x));
if (ret)
return ret;
/* Offset X */
ret = ov8865_write(sensor, OV8865_OFFSET_X_H_REG,
OV8865_OFFSET_X_H(mode->offset_x));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_OFFSET_X_L_REG,
OV8865_OFFSET_X_L(mode->offset_x));
if (ret)
return ret;
/* Crop End X */
ret = ov8865_write(sensor, OV8865_CROP_END_X_H_REG,
OV8865_CROP_END_X_H(mode->crop_end_x));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_CROP_END_X_L_REG,
OV8865_CROP_END_X_L(mode->crop_end_x));
if (ret)
return ret;
/* Crop Start Y */
ret = ov8865_write(sensor, OV8865_CROP_START_Y_H_REG,
OV8865_CROP_START_Y_H(mode->crop_start_y));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_CROP_START_Y_L_REG,
OV8865_CROP_START_Y_L(mode->crop_start_y));
if (ret)
return ret;
/* Offset Y */
ret = ov8865_write(sensor, OV8865_OFFSET_Y_H_REG,
OV8865_OFFSET_Y_H(mode->offset_y));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_OFFSET_Y_L_REG,
OV8865_OFFSET_Y_L(mode->offset_y));
if (ret)
return ret;
/* Crop End Y */
ret = ov8865_write(sensor, OV8865_CROP_END_Y_H_REG,
OV8865_CROP_END_Y_H(mode->crop_end_y));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_CROP_END_Y_L_REG,
OV8865_CROP_END_Y_L(mode->crop_end_y));
if (ret)
return ret;
}
/* VFIFO */
ret = ov8865_write(sensor, OV8865_VFIFO_READ_START_H_REG,
OV8865_VFIFO_READ_START_H(mode->vfifo_read_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_VFIFO_READ_START_L_REG,
OV8865_VFIFO_READ_START_L(mode->vfifo_read_start));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_ABLC_NUM_REG,
OV8865_ABLC_NUM(mode->ablc_num));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_ZLINE_NUM_REG,
OV8865_ZLINE_NUM(mode->zline_num));
if (ret)
return ret;
/* Binning */
ret = ov8865_mode_binning_configure(sensor, mode);
if (ret)
return ret;
/* Black Level */
ret = ov8865_mode_black_level_configure(sensor, mode);
if (ret)
return ret;
/* PLLs */
ret = ov8865_mode_pll1_configure(sensor, mode, mbus_code);
if (ret)
return ret;
ret = ov8865_mode_pll2_configure(sensor, mode);
if (ret)
return ret;
ret = ov8865_mode_sclk_configure(sensor, mode);
if (ret)
return ret;
/* Extra registers */
if (mode->register_values) {
ret = ov8865_write_sequence(sensor, mode->register_values,
mode->register_values_count);
if (ret)
return ret;
}
return 0;
}
static unsigned long ov8865_mode_mipi_clk_rate(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode)
{
const struct ov8865_pll1_config *config = mode->pll1_config;
unsigned long pll1_rate;
pll1_rate = ov8865_mode_pll1_rate(sensor, mode);
return pll1_rate / config->m_div / 2;
}
/* Exposure */
static int ov8865_exposure_configure(struct ov8865_sensor *sensor, u32 exposure)
{
int ret;
ret = ov8865_write(sensor, OV8865_EXPOSURE_CTRL_HH_REG,
OV8865_EXPOSURE_CTRL_HH(exposure));
if (ret)
return ret;
ret = ov8865_write(sensor, OV8865_EXPOSURE_CTRL_H_REG,
OV8865_EXPOSURE_CTRL_H(exposure));
if (ret)
return ret;
return ov8865_write(sensor, OV8865_EXPOSURE_CTRL_L_REG,
OV8865_EXPOSURE_CTRL_L(exposure));
}
/* Gain */
static int ov8865_gain_configure(struct ov8865_sensor *sensor, u32 gain)
{
int ret;
ret = ov8865_write(sensor, OV8865_GAIN_CTRL_H_REG,
OV8865_GAIN_CTRL_H(gain));
if (ret)
return ret;
return ov8865_write(sensor, OV8865_GAIN_CTRL_L_REG,
OV8865_GAIN_CTRL_L(gain));
}
/* White Balance */
static int ov8865_red_balance_configure(struct ov8865_sensor *sensor,
u32 red_balance)
{
int ret;
ret = ov8865_write(sensor, OV8865_ISP_GAIN_RED_H_REG,
OV8865_ISP_GAIN_RED_H(red_balance));
if (ret)
return ret;
return ov8865_write(sensor, OV8865_ISP_GAIN_RED_L_REG,
OV8865_ISP_GAIN_RED_L(red_balance));
}
static int ov8865_blue_balance_configure(struct ov8865_sensor *sensor,
u32 blue_balance)
{
int ret;
ret = ov8865_write(sensor, OV8865_ISP_GAIN_BLUE_H_REG,
OV8865_ISP_GAIN_BLUE_H(blue_balance));
if (ret)
return ret;
return ov8865_write(sensor, OV8865_ISP_GAIN_BLUE_L_REG,
OV8865_ISP_GAIN_BLUE_L(blue_balance));
}
/* Flip */
static int ov8865_flip_vert_configure(struct ov8865_sensor *sensor, bool enable)
{
u8 bits = OV8865_FORMAT1_FLIP_VERT_ISP_EN |
OV8865_FORMAT1_FLIP_VERT_SENSOR_EN;
return ov8865_update_bits(sensor, OV8865_FORMAT1_REG, bits,
enable ? bits : 0);
}
static int ov8865_flip_horz_configure(struct ov8865_sensor *sensor, bool enable)
{
u8 bits = OV8865_FORMAT2_FLIP_HORZ_ISP_EN |
OV8865_FORMAT2_FLIP_HORZ_SENSOR_EN;
return ov8865_update_bits(sensor, OV8865_FORMAT2_REG, bits,
enable ? bits : 0);
}
/* Test Pattern */
static int ov8865_test_pattern_configure(struct ov8865_sensor *sensor,
unsigned int index)
{
if (index >= ARRAY_SIZE(ov8865_test_pattern_bits))
return -EINVAL;
return ov8865_write(sensor, OV8865_PRE_CTRL0_REG,
ov8865_test_pattern_bits[index]);
}
/* State */
static int ov8865_state_mipi_configure(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode,
u32 mbus_code)
{
struct ov8865_ctrls *ctrls = &sensor->ctrls;
struct v4l2_fwnode_bus_mipi_csi2 *bus_mipi_csi2 =
&sensor->endpoint.bus.mipi_csi2;
unsigned long mipi_clk_rate;
unsigned int bits_per_sample;
unsigned int lanes_count;
unsigned int i, j;
s64 mipi_pixel_rate;
mipi_clk_rate = ov8865_mode_mipi_clk_rate(sensor, mode);
if (!mipi_clk_rate)
return -EINVAL;
for (i = 0; i < ARRAY_SIZE(ov8865_link_freq_menu); i++) {
s64 freq = ov8865_link_freq_menu[i];
if (freq == mipi_clk_rate)
break;
}
for (j = 0; j < sensor->endpoint.nr_of_link_frequencies; j++) {
u64 freq = sensor->endpoint.link_frequencies[j];
if (freq == mipi_clk_rate)
break;
}
if (i == ARRAY_SIZE(ov8865_link_freq_menu)) {
dev_err(sensor->dev,
"failed to find %lu clk rate in link freq\n",
mipi_clk_rate);
} else if (j == sensor->endpoint.nr_of_link_frequencies) {
dev_err(sensor->dev,
"failed to find %lu clk rate in endpoint link-frequencies\n",
mipi_clk_rate);
} else {
__v4l2_ctrl_s_ctrl(ctrls->link_freq, i);
}
switch (mbus_code) {
case MEDIA_BUS_FMT_SBGGR10_1X10:
bits_per_sample = 10;
break;
default:
return -EINVAL;
}
lanes_count = bus_mipi_csi2->num_data_lanes;
mipi_pixel_rate = mipi_clk_rate * 2 * lanes_count / bits_per_sample;
__v4l2_ctrl_s_ctrl_int64(ctrls->pixel_rate, mipi_pixel_rate);
return 0;
}
static int ov8865_state_configure(struct ov8865_sensor *sensor,
const struct ov8865_mode *mode,
u32 mbus_code)
{
int ret;
if (sensor->state.streaming)
return -EBUSY;
/* State will be configured at first power on otherwise. */
if (pm_runtime_enabled(sensor->dev) &&
!pm_runtime_suspended(sensor->dev)) {
ret = ov8865_mode_configure(sensor, mode, mbus_code);
if (ret)
return ret;
}
ret = ov8865_state_mipi_configure(sensor, mode, mbus_code);
if (ret)
return ret;
sensor->state.mode = mode;
sensor->state.mbus_code = mbus_code;
return 0;
}
static int ov8865_state_init(struct ov8865_sensor *sensor)
{
return ov8865_state_configure(sensor, &ov8865_modes[0],
ov8865_mbus_codes[0]);
}
/* Sensor Base */
static int ov8865_sensor_init(struct ov8865_sensor *sensor)
{
int ret;
ret = ov8865_sw_reset(sensor);
if (ret) {
dev_err(sensor->dev, "failed to perform sw reset\n");
return ret;
}
ret = ov8865_sw_standby(sensor, 1);
if (ret) {
dev_err(sensor->dev, "failed to set sensor standby\n");
return ret;
}
ret = ov8865_chip_id_check(sensor);
if (ret) {
dev_err(sensor->dev, "failed to check sensor chip id\n");
return ret;
}
ret = ov8865_write_sequence(sensor, ov8865_init_sequence,
ARRAY_SIZE(ov8865_init_sequence));
if (ret) {
dev_err(sensor->dev, "failed to write init sequence\n");
return ret;
}
ret = ov8865_charge_pump_configure(sensor);
if (ret) {
dev_err(sensor->dev, "failed to configure pad\n");
return ret;
}
ret = ov8865_mipi_configure(sensor);
if (ret) {
dev_err(sensor->dev, "failed to configure MIPI\n");
return ret;
}
ret = ov8865_isp_configure(sensor);
if (ret) {
dev_err(sensor->dev, "failed to configure ISP\n");
return ret;
}
ret = ov8865_black_level_configure(sensor);
if (ret) {
dev_err(sensor->dev, "failed to configure black level\n");
return ret;
}
/* Configure current mode. */
ret = ov8865_state_configure(sensor, sensor->state.mode,
sensor->state.mbus_code);
if (ret) {
dev_err(sensor->dev, "failed to configure state\n");
return ret;
}
return 0;
}
static int ov8865_sensor_power(struct ov8865_sensor *sensor, bool on)
{
/* Keep initialized to zero for disable label. */
int ret = 0;
if (on) {
gpiod_set_value_cansleep(sensor->reset, 1);
gpiod_set_value_cansleep(sensor->powerdown, 1);
ret = regulator_enable(sensor->dovdd);
if (ret) {
dev_err(sensor->dev,
"failed to enable DOVDD regulator\n");
goto disable;
}
ret = regulator_enable(sensor->avdd);
if (ret) {
dev_err(sensor->dev,
"failed to enable AVDD regulator\n");
goto disable;
}
ret = regulator_enable(sensor->dvdd);
if (ret) {
dev_err(sensor->dev,
"failed to enable DVDD regulator\n");
goto disable;
}
ret = clk_prepare_enable(sensor->extclk);
if (ret) {
dev_err(sensor->dev, "failed to enable EXTCLK clock\n");
goto disable;
}
gpiod_set_value_cansleep(sensor->reset, 0);
gpiod_set_value_cansleep(sensor->powerdown, 0);
/* Time to enter streaming mode according to power timings. */
usleep_range(10000, 12000);
} else {
disable:
gpiod_set_value_cansleep(sensor->powerdown, 1);
gpiod_set_value_cansleep(sensor->reset, 1);
clk_disable_unprepare(sensor->extclk);
regulator_disable(sensor->dvdd);
regulator_disable(sensor->avdd);
regulator_disable(sensor->dovdd);
}
return ret;
}
/* Controls */
static int ov8865_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *subdev = ov8865_ctrl_subdev(ctrl);
struct ov8865_sensor *sensor = ov8865_subdev_sensor(subdev);
unsigned int index;
int ret;
/* Wait for the sensor to be on before setting controls. */
if (pm_runtime_suspended(sensor->dev))
return 0;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
ret = ov8865_exposure_configure(sensor, ctrl->val);
if (ret)
return ret;
break;
case V4L2_CID_GAIN:
ret = ov8865_gain_configure(sensor, ctrl->val);
if (ret)
return ret;
break;
case V4L2_CID_RED_BALANCE:
return ov8865_red_balance_configure(sensor, ctrl->val);
case V4L2_CID_BLUE_BALANCE:
return ov8865_blue_balance_configure(sensor, ctrl->val);
case V4L2_CID_HFLIP:
return ov8865_flip_horz_configure(sensor, !!ctrl->val);
case V4L2_CID_VFLIP:
return ov8865_flip_vert_configure(sensor, !!ctrl->val);
case V4L2_CID_TEST_PATTERN:
index = (unsigned int)ctrl->val;
return ov8865_test_pattern_configure(sensor, index);
default:
return -EINVAL;
}
return 0;
}
static const struct v4l2_ctrl_ops ov8865_ctrl_ops = {
.s_ctrl = ov8865_s_ctrl,
};
static int ov8865_ctrls_init(struct ov8865_sensor *sensor)
{
struct ov8865_ctrls *ctrls = &sensor->ctrls;
struct v4l2_ctrl_handler *handler = &ctrls->handler;
const struct v4l2_ctrl_ops *ops = &ov8865_ctrl_ops;
int ret;
v4l2_ctrl_handler_init(handler, 32);
/* Use our mutex for ctrl locking. */
handler->lock = &sensor->mutex;
/* Exposure */
v4l2_ctrl_new_std(handler, ops, V4L2_CID_EXPOSURE, 16, 1048575, 16,
512);
/* Gain */
v4l2_ctrl_new_std(handler, ops, V4L2_CID_GAIN, 128, 8191, 128, 128);
/* White Balance */
v4l2_ctrl_new_std(handler, ops, V4L2_CID_RED_BALANCE, 1, 32767, 1,
1024);
v4l2_ctrl_new_std(handler, ops, V4L2_CID_BLUE_BALANCE, 1, 32767, 1,
1024);
/* Flip */
v4l2_ctrl_new_std(handler, ops, V4L2_CID_HFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(handler, ops, V4L2_CID_VFLIP, 0, 1, 1, 0);
/* Test Pattern */
v4l2_ctrl_new_std_menu_items(handler, ops, V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(ov8865_test_pattern_menu) - 1,
0, 0, ov8865_test_pattern_menu);
/* MIPI CSI-2 */
ctrls->link_freq =
v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
ARRAY_SIZE(ov8865_link_freq_menu) - 1,
0, ov8865_link_freq_menu);
ctrls->pixel_rate =
v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 1,
INT_MAX, 1, 1);
if (handler->error) {
ret = handler->error;
goto error_ctrls;
}
ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY;
sensor->subdev.ctrl_handler = handler;
return 0;
error_ctrls:
v4l2_ctrl_handler_free(handler);
return ret;
}
/* Subdev Video Operations */
static int ov8865_s_stream(struct v4l2_subdev *subdev, int enable)
{
struct ov8865_sensor *sensor = ov8865_subdev_sensor(subdev);
struct ov8865_state *state = &sensor->state;
int ret;
if (enable) {
ret = pm_runtime_resume_and_get(sensor->dev);
if (ret < 0)
return ret;
}
mutex_lock(&sensor->mutex);
ret = ov8865_sw_standby(sensor, !enable);
mutex_unlock(&sensor->mutex);
if (ret)
return ret;
state->streaming = !!enable;
if (!enable)
pm_runtime_put(sensor->dev);
return 0;
}
static int ov8865_g_frame_interval(struct v4l2_subdev *subdev,
struct v4l2_subdev_frame_interval *interval)
{
struct ov8865_sensor *sensor = ov8865_subdev_sensor(subdev);
const struct ov8865_mode *mode;
mutex_lock(&sensor->mutex);
mode = sensor->state.mode;
interval->interval = mode->frame_interval;
mutex_unlock(&sensor->mutex);
return 0;
}
static const struct v4l2_subdev_video_ops ov8865_subdev_video_ops = {
.s_stream = ov8865_s_stream,
.g_frame_interval = ov8865_g_frame_interval,
.s_frame_interval = ov8865_g_frame_interval,
};
/* Subdev Pad Operations */
static int ov8865_enum_mbus_code(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code_enum)
{
if (code_enum->index >= ARRAY_SIZE(ov8865_mbus_codes))
return -EINVAL;
code_enum->code = ov8865_mbus_codes[code_enum->index];
return 0;
}
static void ov8865_mbus_format_fill(struct v4l2_mbus_framefmt *mbus_format,
u32 mbus_code,
const struct ov8865_mode *mode)
{
mbus_format->width = mode->output_size_x;
mbus_format->height = mode->output_size_y;
mbus_format->code = mbus_code;
mbus_format->field = V4L2_FIELD_NONE;
mbus_format->colorspace = V4L2_COLORSPACE_RAW;
mbus_format->ycbcr_enc =
V4L2_MAP_YCBCR_ENC_DEFAULT(mbus_format->colorspace);
mbus_format->quantization = V4L2_QUANTIZATION_FULL_RANGE;
mbus_format->xfer_func =
V4L2_MAP_XFER_FUNC_DEFAULT(mbus_format->colorspace);
}
static int ov8865_get_fmt(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct ov8865_sensor *sensor = ov8865_subdev_sensor(subdev);
struct v4l2_mbus_framefmt *mbus_format = &format->format;
mutex_lock(&sensor->mutex);
if (format->which == V4L2_SUBDEV_FORMAT_TRY)
*mbus_format = *v4l2_subdev_get_try_format(subdev, sd_state,
format->pad);
else
ov8865_mbus_format_fill(mbus_format, sensor->state.mbus_code,
sensor->state.mode);
mutex_unlock(&sensor->mutex);
return 0;
}
static int ov8865_set_fmt(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct ov8865_sensor *sensor = ov8865_subdev_sensor(subdev);
struct v4l2_mbus_framefmt *mbus_format = &format->format;
const struct ov8865_mode *mode;
u32 mbus_code = 0;
unsigned int index;
int ret = 0;
mutex_lock(&sensor->mutex);
if (sensor->state.streaming) {
ret = -EBUSY;
goto complete;
}
/* Try to find requested mbus code. */
for (index = 0; index < ARRAY_SIZE(ov8865_mbus_codes); index++) {
if (ov8865_mbus_codes[index] == mbus_format->code) {
mbus_code = mbus_format->code;
break;
}
}
/* Fallback to default. */
if (!mbus_code)
mbus_code = ov8865_mbus_codes[0];
/* Find the mode with nearest dimensions. */
mode = v4l2_find_nearest_size(ov8865_modes, ARRAY_SIZE(ov8865_modes),
output_size_x, output_size_y,
mbus_format->width, mbus_format->height);
if (!mode) {
ret = -EINVAL;
goto complete;
}
ov8865_mbus_format_fill(mbus_format, mbus_code, mode);
if (format->which == V4L2_SUBDEV_FORMAT_TRY)
*v4l2_subdev_get_try_format(subdev, sd_state, format->pad) =
*mbus_format;
else if (sensor->state.mode != mode ||
sensor->state.mbus_code != mbus_code)
ret = ov8865_state_configure(sensor, mode, mbus_code);
complete:
mutex_unlock(&sensor->mutex);
return ret;
}
static int ov8865_enum_frame_size(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *size_enum)
{
const struct ov8865_mode *mode;
if (size_enum->index >= ARRAY_SIZE(ov8865_modes))
return -EINVAL;
mode = &ov8865_modes[size_enum->index];
size_enum->min_width = size_enum->max_width = mode->output_size_x;
size_enum->min_height = size_enum->max_height = mode->output_size_y;
return 0;
}
static int ov8865_enum_frame_interval(struct v4l2_subdev *subdev,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval_enum *interval_enum)
{
const struct ov8865_mode *mode = NULL;
unsigned int mode_index;
unsigned int interval_index;
if (interval_enum->index > 0)
return -EINVAL;
/*
* Multiple modes with the same dimensions may have different frame
* intervals, so look up each relevant mode.
*/
for (mode_index = 0, interval_index = 0;
mode_index < ARRAY_SIZE(ov8865_modes); mode_index++) {
mode = &ov8865_modes[mode_index];
if (mode->output_size_x == interval_enum->width &&
mode->output_size_y == interval_enum->height) {
if (interval_index == interval_enum->index)
break;
interval_index++;
}
}
if (mode_index == ARRAY_SIZE(ov8865_modes))
return -EINVAL;
interval_enum->interval = mode->frame_interval;
return 0;
}
static const struct v4l2_subdev_pad_ops ov8865_subdev_pad_ops = {
.enum_mbus_code = ov8865_enum_mbus_code,
.get_fmt = ov8865_get_fmt,
.set_fmt = ov8865_set_fmt,
.enum_frame_size = ov8865_enum_frame_size,
.enum_frame_interval = ov8865_enum_frame_interval,
};
static const struct v4l2_subdev_ops ov8865_subdev_ops = {
.video = &ov8865_subdev_video_ops,
.pad = &ov8865_subdev_pad_ops,
};
static int ov8865_suspend(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
struct ov8865_sensor *sensor = ov8865_subdev_sensor(subdev);
struct ov8865_state *state = &sensor->state;
int ret = 0;
mutex_lock(&sensor->mutex);
if (state->streaming) {
ret = ov8865_sw_standby(sensor, true);
if (ret)
goto complete;
}
ret = ov8865_sensor_power(sensor, false);
if (ret)
ov8865_sw_standby(sensor, false);
complete:
mutex_unlock(&sensor->mutex);
return ret;
}
static int ov8865_resume(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
struct ov8865_sensor *sensor = ov8865_subdev_sensor(subdev);
struct ov8865_state *state = &sensor->state;
int ret = 0;
mutex_lock(&sensor->mutex);
ret = ov8865_sensor_power(sensor, true);
if (ret)
goto complete;
ret = ov8865_sensor_init(sensor);
if (ret)
goto error_power;
ret = __v4l2_ctrl_handler_setup(&sensor->ctrls.handler);
if (ret)
goto error_power;
if (state->streaming) {
ret = ov8865_sw_standby(sensor, false);
if (ret)
goto error_power;
}
goto complete;
error_power:
ov8865_sensor_power(sensor, false);
complete:
mutex_unlock(&sensor->mutex);
return ret;
}
static int ov8865_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct fwnode_handle *handle;
struct ov8865_sensor *sensor;
struct v4l2_subdev *subdev;
struct media_pad *pad;
unsigned long rate;
int ret;
sensor = devm_kzalloc(dev, sizeof(*sensor), GFP_KERNEL);
if (!sensor)
return -ENOMEM;
sensor->dev = dev;
sensor->i2c_client = client;
/* Graph Endpoint */
handle = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
if (!handle) {
dev_err(dev, "unable to find endpoint node\n");
return -EINVAL;
}
sensor->endpoint.bus_type = V4L2_MBUS_CSI2_DPHY;
ret = v4l2_fwnode_endpoint_alloc_parse(handle, &sensor->endpoint);
fwnode_handle_put(handle);
if (ret) {
dev_err(dev, "failed to parse endpoint node\n");
return ret;
}
/* GPIOs */
sensor->powerdown = devm_gpiod_get_optional(dev, "powerdown",
GPIOD_OUT_HIGH);
if (IS_ERR(sensor->powerdown)) {
ret = PTR_ERR(sensor->powerdown);
goto error_endpoint;
}
sensor->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(sensor->reset)) {
ret = PTR_ERR(sensor->reset);
goto error_endpoint;
}
/* Regulators */
/* DVDD: digital core */
sensor->dvdd = devm_regulator_get(dev, "dvdd");
if (IS_ERR(sensor->dvdd)) {
dev_err(dev, "cannot get DVDD (digital core) regulator\n");
ret = PTR_ERR(sensor->dvdd);
goto error_endpoint;
}
/* DOVDD: digital I/O */
sensor->dovdd = devm_regulator_get(dev, "dovdd");
if (IS_ERR(sensor->dovdd)) {
dev_err(dev, "cannot get DOVDD (digital I/O) regulator\n");
ret = PTR_ERR(sensor->dovdd);
goto error_endpoint;
}
/* AVDD: analog */
sensor->avdd = devm_regulator_get(dev, "avdd");
if (IS_ERR(sensor->avdd)) {
dev_err(dev, "cannot get AVDD (analog) regulator\n");
ret = PTR_ERR(sensor->avdd);
goto error_endpoint;
}
/* External Clock */
sensor->extclk = devm_clk_get(dev, NULL);
if (IS_ERR(sensor->extclk)) {
dev_err(dev, "failed to get external clock\n");
ret = PTR_ERR(sensor->extclk);
goto error_endpoint;
}
rate = clk_get_rate(sensor->extclk);
if (rate != OV8865_EXTCLK_RATE) {
dev_err(dev, "clock rate %lu Hz is unsupported\n", rate);
ret = -EINVAL;
goto error_endpoint;
}
/* Subdev, entity and pad */
subdev = &sensor->subdev;
v4l2_i2c_subdev_init(subdev, client, &ov8865_subdev_ops);
subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
subdev->entity.function = MEDIA_ENT_F_CAM_SENSOR;
pad = &sensor->pad;
pad->flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&subdev->entity, 1, pad);
if (ret)
goto error_entity;
/* Mutex */
mutex_init(&sensor->mutex);
/* Sensor */
ret = ov8865_ctrls_init(sensor);
if (ret)
goto error_mutex;
ret = ov8865_state_init(sensor);
if (ret)
goto error_ctrls;
/* Runtime PM */
pm_runtime_enable(sensor->dev);
pm_runtime_set_suspended(sensor->dev);
/* V4L2 subdev register */
ret = v4l2_async_register_subdev_sensor(subdev);
if (ret)
goto error_pm;
return 0;
error_pm:
pm_runtime_disable(sensor->dev);
error_ctrls:
v4l2_ctrl_handler_free(&sensor->ctrls.handler);
error_mutex:
mutex_destroy(&sensor->mutex);
error_entity:
media_entity_cleanup(&sensor->subdev.entity);
error_endpoint:
v4l2_fwnode_endpoint_free(&sensor->endpoint);
return ret;
}
static int ov8865_remove(struct i2c_client *client)
{
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
struct ov8865_sensor *sensor = ov8865_subdev_sensor(subdev);
v4l2_async_unregister_subdev(subdev);
pm_runtime_disable(sensor->dev);
v4l2_ctrl_handler_free(&sensor->ctrls.handler);
mutex_destroy(&sensor->mutex);
media_entity_cleanup(&subdev->entity);
v4l2_fwnode_endpoint_free(&sensor->endpoint);
return 0;
}
static const struct dev_pm_ops ov8865_pm_ops = {
SET_RUNTIME_PM_OPS(ov8865_suspend, ov8865_resume, NULL)
};
static const struct of_device_id ov8865_of_match[] = {
{ .compatible = "ovti,ov8865" },
{ }
};
MODULE_DEVICE_TABLE(of, ov8865_of_match);
static struct i2c_driver ov8865_driver = {
.driver = {
.name = "ov8865",
.of_match_table = ov8865_of_match,
.pm = &ov8865_pm_ops,
},
.probe_new = ov8865_probe,
.remove = ov8865_remove,
};
module_i2c_driver(ov8865_driver);
MODULE_AUTHOR("Paul Kocialkowski <paul.kocialkowski@bootlin.com>");
MODULE_DESCRIPTION("V4L2 driver for the OmniVision OV8865 image sensor");
MODULE_LICENSE("GPL v2");