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linux/drivers/media/i2c/ov8865.c
Paul Kocialkowski 11c0d8fdcc media: i2c: Add support for the OV8865 image sensor 
The OV8865 is a 8 Mpx CMOS image sensor producing 3264x2448 at 30 fps.
Other modes (including some with sub-sampling) are available too.
It outputs 10-bit bayer CFA data through a MIPI CSI-2 interface with
up to 4 lanes supported.

Some register initialisation sequences are still needed for this driver,
as they cover registers for which no documentation is available.

This work is based on the first version of the driver submitted by
Kévin L'hôpital, which was adapted to mainline from the Allwinner BSP.
This version is a rewrite of the first version that matches the structure
of the OV5648 driver, with explicit PLL configuration, all the necessary
mode-specific fields, associatied registers and reduced static sequences.

It was tested with the Banana Pi Camera Board v3 and the Banana Pi M3.

Co-developed-by: Kévin L'hôpital <kevin.lhopital@bootlin.com>
Signed-off-by: Kévin L'hôpital <kevin.lhopital@bootlin.com>
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
2021-01-12 17:13:39 +01:00

2973 lines
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// 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_get_sync(sensor->dev);
if (ret < 0) {
pm_runtime_put_noidle(sensor->dev);
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;
int ret = 0;
mutex_lock(&sensor->mutex);
mode = sensor->state.mode;
interval->interval = mode->frame_interval;
mutex_unlock(&sensor->mutex);
return ret;
}
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_pad_config *config,
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_pad_config *config,
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, config,
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_pad_config *config,
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, config, 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_pad_config *config,
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_pad_config *config,
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) || !mode)
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 enpoint 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->dvdd)) {
dev_err(dev, "cannot get DOVDD (digital I/O) regulator\n");
ret = PTR_ERR(sensor->dvdd);
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->dvdd);
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_common(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");
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