Hi Paul, Thanks for the update. I have a few comments on the driver, too.
On Sat, Nov 28, 2020 at 03:33:50PM +0100, Paul Kocialkowski wrote: > The OV5648 is a 5 Mpx CMOS image sensor, connected via MIPI CSI-2 > in a one or two lane configuration. > > Most of the features of the hardware are supported, including: > - Auto and manual exposition/gain > - Auto and manual white balance > - Horizontal and vertical flip > - Test patterns > > But the following are still missing: > - Debanding, based on power source frequency; > - Exposition setting correlated to time units. > > Signed-off-by: Paul Kocialkowski <[email protected]> > --- > drivers/media/i2c/Kconfig | 14 + > drivers/media/i2c/Makefile | 1 + > drivers/media/i2c/ov5648.c | 2714 ++++++++++++++++++++++++++++++++++++ > 3 files changed, 2729 insertions(+) > create mode 100644 drivers/media/i2c/ov5648.c > > diff --git a/drivers/media/i2c/Kconfig b/drivers/media/i2c/Kconfig > index 878f66ef2719..f971225893a1 100644 > --- a/drivers/media/i2c/Kconfig > +++ b/drivers/media/i2c/Kconfig > @@ -922,6 +922,20 @@ config VIDEO_OV5647 > To compile this driver as a module, choose M here: the > module will be called ov5647. > > +config VIDEO_OV5648 > + tristate "OmniVision OV5648 sensor support" > + depends on OF > + depends on I2C && VIDEO_V4L2 > + select MEDIA_CONTROLLER > + select VIDEO_V4L2_SUBDEV_API > + select V4L2_FWNODE > + help > + This is a Video4Linux2 sensor driver for the OmniVision > + OV5648 camera. > + > + To compile this driver as a module, choose M here: the > + module will be called ov5648. > + > config VIDEO_OV6650 > tristate "OmniVision OV6650 sensor support" > depends on I2C && VIDEO_V4L2 > diff --git a/drivers/media/i2c/Makefile b/drivers/media/i2c/Makefile > index f0a77473979d..15d4d6382582 100644 > --- a/drivers/media/i2c/Makefile > +++ b/drivers/media/i2c/Makefile > @@ -71,6 +71,7 @@ obj-$(CONFIG_VIDEO_OV2740) += ov2740.o > obj-$(CONFIG_VIDEO_OV5640) += ov5640.o > obj-$(CONFIG_VIDEO_OV5645) += ov5645.o > obj-$(CONFIG_VIDEO_OV5647) += ov5647.o > +obj-$(CONFIG_VIDEO_OV5648) += ov5648.o > obj-$(CONFIG_VIDEO_OV5670) += ov5670.o > obj-$(CONFIG_VIDEO_OV5675) += ov5675.o > obj-$(CONFIG_VIDEO_OV5695) += ov5695.o > diff --git a/drivers/media/i2c/ov5648.c b/drivers/media/i2c/ov5648.c > new file mode 100644 > index 000000000000..43e0c2c3ccfa > --- /dev/null > +++ b/drivers/media/i2c/ov5648.c > @@ -0,0 +1,2714 @@ > +// SPDX-License-Identifier: GPL-2.0-or-later > +/* > + * Copyright (C) 2020 Bootlin > + * Author: Paul Kocialkowski <[email protected]> > + */ > + > +#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 OV5648_XVCLK_RATE 24000000 > + > +/* Register definitions */ > + > +/* System */ > + > +#define OV5648_SW_STANDBY_REG 0x100 > +#define OV5648_SW_STANDBY_STREAM_ON BIT(0) > + > +#define OV5648_SW_RESET_REG 0x103 > +#define OV5648_SW_RESET_RESET BIT(0) > + > +#define OV5648_PAD_OEN0_REG 0x3000 > +#define OV5648_PAD_OEN1_REG 0x3001 > +#define OV5648_PAD_OEN2_REG 0x3002 > +#define OV5648_PAD_OUT0_REG 0x3008 > +#define OV5648_PAD_OUT1_REG 0x3009 > + > +#define OV5648_CHIP_ID_H_REG 0x300a > +#define OV5648_CHIP_ID_H_VALUE 0x56 > +#define OV5648_CHIP_ID_L_REG 0x300b > +#define OV5648_CHIP_ID_L_VALUE 0x48 > + > +#define OV5648_PAD_OUT2_REG 0x300d > +#define OV5648_PAD_SEL0_REG 0x300e > +#define OV5648_PAD_SEL1_REG 0x300f > +#define OV5648_PAD_SEL2_REG 0x3010 > +#define OV5648_PAD_PK_REG 0x3011 > +#define OV5648_PAD_PK_PD_DATO_EN BIT(7) > +#define OV5648_PAD_PK_DRIVE_STRENGTH_1X (0 << 5) > +#define OV5648_PAD_PK_DRIVE_STRENGTH_2X (2 << 5) > +#define OV5648_PAD_PK_FREX_N BIT(1) > + > +#define OV5648_A_PWC_PK_O0_REG 0x3013 > +#define OV5648_A_PWC_PK_O0_BP_REGULATOR_N BIT(3) > +#define OV5648_A_PWC_PK_O1_REG 0x3014 > + > +#define OV5648_MIPI_PHY0_REG 0x3016 > +#define OV5648_MIPI_PHY1_REG 0x3017 > +#define OV5648_MIPI_SC_CTRL0_REG 0x3018 > +#define OV5648_MIPI_SC_CTRL0_MIPI_LANES(v) (((v) << 5) & GENMASK(7, 5)) > +#define OV5648_MIPI_SC_CTRL0_PHY_HS_TX_PD BIT(4) > +#define OV5648_MIPI_SC_CTRL0_PHY_LP_RX_PD BIT(3) > +#define OV5648_MIPI_SC_CTRL0_MIPI_EN BIT(2) > +#define OV5648_MIPI_SC_CTRL0_MIPI_SUSP BIT(1) > +#define OV5648_MIPI_SC_CTRL0_LANE_DIS_OP BIT(0) > +#define OV5648_MIPI_SC_CTRL1_REG 0x3019 > +#define OV5648_MISC_CTRL0_REG 0x3021 > +#define OV5648_MIPI_SC_CTRL2_REG 0x3022 > +#define OV5648_SUB_ID_REG 0x302a > + > +#define OV5648_PLL_CTRL0_REG 0x3034 > +#define OV5648_PLL_CTRL0_PLL_CHARGE_PUMP(v) (((v) << 4) & GENMASK(6, 4)) > +#define OV5648_PLL_CTRL0_BITS(v) ((v) & GENMASK(3, 0)) > +#define OV5648_PLL_CTRL1_REG 0x3035 > +#define OV5648_PLL_CTRL1_SYS_DIV(v) (((v) << 4) & GENMASK(7, 4)) > +#define OV5648_PLL_CTRL1_MIPI_DIV(v) ((v) & GENMASK(3, 0)) > +#define OV5648_PLL_MUL_REG 0x3036 > +#define OV5648_PLL_MUL(v) ((v) & GENMASK(7, 0)) > +#define OV5648_PLL_DIV_REG 0x3037 > +#define OV5648_PLL_DIV_ROOT_DIV(v) ((((v) - 1) << 4) & BIT(4)) > +#define OV5648_PLL_DIV_PLL_PRE_DIV(v) ((v) & GENMASK(3, 0)) > +#define OV5648_PLL_DEBUG_REG 0x3038 > +#define OV5648_PLL_BYPASS_REG 0x3039 > + > +#define OV5648_PLLS_BYPASS_REG 0x303a > +#define OV5648_PLLS_MUL_REG 0x303b > +#define OV5648_PLLS_MUL(v) ((v) & GENMASK(4, 0)) > +#define OV5648_PLLS_CTRL_REG 0x303c > +#define OV5648_PLLS_CTRL_PLL_CHARGE_PUMP(v) (((v) << 4) & GENMASK(6, 4)) > +#define OV5648_PLLS_CTRL_SYS_DIV(v) ((v) & GENMASK(3, 0)) > +#define OV5648_PLLS_DIV_REG 0x303d > +#define OV5648_PLLS_DIV_PLLS_PRE_DIV(v) (((v) << 4) & > GENMASK(5, 4)) > +#define OV5648_PLLS_DIV_PLLS_DIV_R(v) ((((v) - 1) << 2) & > BIT(2)) > +#define OV5648_PLLS_DIV_PLLS_SEL_DIV(v) ((v) & GENMASK(1, 0)) > + > +#define OV5648_SRB_CTRL_REG 0x3106 > +#define OV5648_SRB_CTRL_SCLK_DIV(v) (((v) << 2) & GENMASK(3, 2)) > +#define OV5648_SRB_CTRL_RESET_ARBITER_EN BIT(1) > +#define OV5648_SRB_CTRL_SCLK_ARBITER_EN BIT(0) > + > +/* Group Hold */ > + > +#define OV5648_GROUP_ADR0_REG 0x3200 > +#define OV5648_GROUP_ADR1_REG 0x3201 > +#define OV5648_GROUP_ADR2_REG 0x3202 > +#define OV5648_GROUP_ADR3_REG 0x3203 > +#define OV5648_GROUP_LEN0_REG 0x3204 > +#define OV5648_GROUP_LEN1_REG 0x3205 > +#define OV5648_GROUP_LEN2_REG 0x3206 > +#define OV5648_GROUP_LEN3_REG 0x3207 > +#define OV5648_GROUP_ACCESS_REG 0x3208 > + > +/* Exposure/gain/banding */ > + > +#define OV5648_EXPOSURE_CTRL_HH_REG 0x3500 > +#define OV5648_EXPOSURE_CTRL_HH(v) (((v) & GENMASK(19, 16)) >> 16) > +#define OV5648_EXPOSURE_CTRL_HH_VALUE(v) (((v) << 16) & GENMASK(19, 16)) > +#define OV5648_EXPOSURE_CTRL_H_REG 0x3501 > +#define OV5648_EXPOSURE_CTRL_H(v) (((v) & GENMASK(15, 8)) >> 8) > +#define OV5648_EXPOSURE_CTRL_H_VALUE(v) (((v) << 8) & > GENMASK(15, 8)) > +#define OV5648_EXPOSURE_CTRL_L_REG 0x3502 > +#define OV5648_EXPOSURE_CTRL_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_EXPOSURE_CTRL_L_VALUE(v) ((v) & GENMASK(7, 0)) > +#define OV5648_MANUAL_CTRL_REG 0x3503 > +#define OV5648_MANUAL_CTRL_FRAME_DELAY(v) (((v) << 4) & GENMASK(5, 4)) > +#define OV5648_MANUAL_CTRL_AGC_MANUAL_EN BIT(1) > +#define OV5648_MANUAL_CTRL_AEC_MANUAL_EN BIT(0) > +#define OV5648_GAIN_CTRL_H_REG 0x350a > +#define OV5648_GAIN_CTRL_H(v) (((v) & GENMASK(9, 8)) > >> 8) > +#define OV5648_GAIN_CTRL_H_VALUE(v) (((v) << 8) & GENMASK(9, 8)) > +#define OV5648_GAIN_CTRL_L_REG 0x350b > +#define OV5648_GAIN_CTRL_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_GAIN_CTRL_L_VALUE(v) ((v) & GENMASK(7, 0)) > + > +#define OV5648_ANALOG_CTRL0_REG_BASE 0x3600 > +#define OV5648_ANALOG_CTRL1_REG_BASE 0x3700 > + > +#define OV5648_AEC_CTRL0_REG 0x3a00 > +#define OV5648_AEC_CTRL0_DEBUG BIT(6) > +#define OV5648_AEC_CTRL0_DEBAND_EN BIT(5) > +#define OV5648_AEC_CTRL0_DEBAND_LOW_LIMIT_EN BIT(4) > +#define OV5648_AEC_CTRL0_START_SEL_EN BIT(3) > +#define OV5648_AEC_CTRL0_NIGHT_MODE_EN BIT(2) > +#define OV5648_AEC_CTRL0_FREEZE_EN BIT(0) > +#define OV5648_EXPOSURE_MIN_REG 0x3a01 > +#define OV5648_EXPOSURE_MAX_60_H_REG 0x3a02 > +#define OV5648_EXPOSURE_MAX_60_L_REG 0x3a03 > +#define OV5648_AEC_CTRL5_REG 0x3a05 > +#define OV5648_AEC_CTRL6_REG 0x3a06 > +#define OV5648_AEC_CTRL7_REG 0x3a07 > +#define OV5648_BANDING_STEP_50_H_REG 0x3a08 > +#define OV5648_BANDING_STEP_50_L_REG 0x3a09 > +#define OV5648_BANDING_STEP_60_H_REG 0x3a0a > +#define OV5648_BANDING_STEP_60_L_REG 0x3a0b > +#define OV5648_AEC_CTRLC_REG 0x3a0c > +#define OV5648_BANDING_MAX_60_REG 0x3a0d > +#define OV5648_BANDING_MAX_50_REG 0x3a0e > +#define OV5648_WPT_REG 0x3a0f > +#define OV5648_BPT_REG 0x3a10 > +#define OV5648_VPT_HIGH_REG 0x3a11 > +#define OV5648_AVG_MANUAL_REG 0x3a12 > +#define OV5648_PRE_GAIN_REG 0x3a13 > +#define OV5648_EXPOSURE_MAX_50_H_REG 0x3a14 > +#define OV5648_EXPOSURE_MAX_50_L_REG 0x3a15 > +#define OV5648_GAIN_BASE_NIGHT_REG 0x3a17 > +#define OV5648_AEC_GAIN_CEILING_H_REG 0x3a18 > +#define OV5648_AEC_GAIN_CEILING_L_REG 0x3a19 > +#define OV5648_DIFF_MAX_REG 0x3a1a > +#define OV5648_WPT2_REG 0x3a1b > +#define OV5648_LED_ADD_ROW_H_REG 0x3a1c > +#define OV5648_LED_ADD_ROW_L_REG 0x3a1d > +#define OV5648_BPT2_REG 0x3a1e > +#define OV5648_VPT_LOW_REG 0x3a1f > +#define OV5648_AEC_CTRL20_REG 0x3a20 > +#define OV5648_AEC_CTRL21_REG 0x3a21 > + > +#define OV5648_AVG_START_X_H_REG 0x5680 > +#define OV5648_AVG_START_X_L_REG 0x5681 > +#define OV5648_AVG_START_Y_H_REG 0x5682 > +#define OV5648_AVG_START_Y_L_REG 0x5683 > +#define OV5648_AVG_WINDOW_X_H_REG 0x5684 > +#define OV5648_AVG_WINDOW_X_L_REG 0x5685 > +#define OV5648_AVG_WINDOW_Y_H_REG 0x5686 > +#define OV5648_AVG_WINDOW_Y_L_REG 0x5687 > +#define OV5648_AVG_WEIGHT00_REG 0x5688 > +#define OV5648_AVG_WEIGHT01_REG 0x5689 > +#define OV5648_AVG_WEIGHT02_REG 0x568a > +#define OV5648_AVG_WEIGHT03_REG 0x568b > +#define OV5648_AVG_WEIGHT04_REG 0x568c > +#define OV5648_AVG_WEIGHT05_REG 0x568d > +#define OV5648_AVG_WEIGHT06_REG 0x568e > +#define OV5648_AVG_WEIGHT07_REG 0x568f > +#define OV5648_AVG_CTRL10_REG 0x5690 > +#define OV5648_AVG_WEIGHT_SUM_REG 0x5691 > +#define OV5648_AVG_READOUT_REG 0x5693 > + > +#define OV5648_DIG_CTRL0_REG 0x5a00 > +#define OV5648_DIG_COMP_MAN_H_REG 0x5a02 > +#define OV5648_DIG_COMP_MAN_L_REG 0x5a03 > + > +#define OV5648_GAINC_MAN_H_REG 0x5a20 > +#define OV5648_GAINC_MAN_L_REG 0x5a21 > +#define OV5648_GAINC_DGC_MAN_H_REG 0x5a22 > +#define OV5648_GAINC_DGC_MAN_L_REG 0x5a23 > +#define OV5648_GAINC_CTRL0_REG 0x5a24 > + > +#define OV5648_GAINF_ANA_NUM_REG 0x5a40 > +#define OV5648_GAINF_DIG_GAIN_REG 0x5a41 > + > +/* Timing */ > + > +#define OV5648_CROP_START_X_H_REG 0x3800 > +#define OV5648_CROP_START_X_H(v) (((v) & GENMASK(11, 8)) >> 8) > +#define OV5648_CROP_START_X_L_REG 0x3801 > +#define OV5648_CROP_START_X_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_CROP_START_Y_H_REG 0x3802 > +#define OV5648_CROP_START_Y_H(v) (((v) & GENMASK(11, 8)) >> 8) > +#define OV5648_CROP_START_Y_L_REG 0x3803 > +#define OV5648_CROP_START_Y_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_CROP_END_X_H_REG 0x3804 > +#define OV5648_CROP_END_X_H(v) (((v) & GENMASK(11, 8)) > >> 8) > +#define OV5648_CROP_END_X_L_REG 0x3805 > +#define OV5648_CROP_END_X_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_CROP_END_Y_H_REG 0x3806 > +#define OV5648_CROP_END_Y_H(v) (((v) & GENMASK(11, 8)) > >> 8) > +#define OV5648_CROP_END_Y_L_REG 0x3807 > +#define OV5648_CROP_END_Y_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_OUTPUT_SIZE_X_H_REG 0x3808 > +#define OV5648_OUTPUT_SIZE_X_H(v) (((v) & GENMASK(11, 8)) >> 8) > +#define OV5648_OUTPUT_SIZE_X_L_REG 0x3809 > +#define OV5648_OUTPUT_SIZE_X_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_OUTPUT_SIZE_Y_H_REG 0x380a > +#define OV5648_OUTPUT_SIZE_Y_H(v) (((v) & GENMASK(11, 8)) >> 8) > +#define OV5648_OUTPUT_SIZE_Y_L_REG 0x380b > +#define OV5648_OUTPUT_SIZE_Y_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_HTS_H_REG 0x380c > +#define OV5648_HTS_H(v) (((v) & GENMASK(12, 8)) > >> 8) > +#define OV5648_HTS_L_REG 0x380d > +#define OV5648_HTS_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_VTS_H_REG 0x380e > +#define OV5648_VTS_H(v) (((v) & GENMASK(15, 8)) > >> 8) > +#define OV5648_VTS_L_REG 0x380f > +#define OV5648_VTS_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_OFFSET_X_H_REG 0x3810 > +#define OV5648_OFFSET_X_H(v) (((v) & GENMASK(11, 8)) >> 8) > +#define OV5648_OFFSET_X_L_REG 0x3811 > +#define OV5648_OFFSET_X_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_OFFSET_Y_H_REG 0x3812 > +#define OV5648_OFFSET_Y_H(v) (((v) & GENMASK(11, 8)) >> 8) > +#define OV5648_OFFSET_Y_L_REG 0x3813 > +#define OV5648_OFFSET_Y_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_SUB_INC_X_REG 0x3814 > +#define OV5648_SUB_INC_X_ODD(v) (((v) << 4) & > GENMASK(7, 4)) > +#define OV5648_SUB_INC_X_EVEN(v) ((v) & GENMASK(3, 0)) > +#define OV5648_SUB_INC_Y_REG 0x3815 > +#define OV5648_SUB_INC_Y_ODD(v) (((v) << 4) & > GENMASK(7, 4)) > +#define OV5648_SUB_INC_Y_EVEN(v) ((v) & GENMASK(3, 0)) > +#define OV5648_HSYNCST_H_REG 0x3816 > +#define OV5648_HSYNCST_H(v) (((v) >> 8) & 0xf) > +#define OV5648_HSYNCST_L_REG 0x3817 > +#define OV5648_HSYNCST_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_HSYNCW_H_REG 0x3818 > +#define OV5648_HSYNCW_H(v) (((v) >> 8) & 0xf) > +#define OV5648_HSYNCW_L_REG 0x3819 > +#define OV5648_HSYNCW_L(v) ((v) & GENMASK(7, 0)) > + > +#define OV5648_TC20_REG 0x3820 > +#define OV5648_TC20_DEBUG BIT(6) > +#define OV5648_TC20_FLIP_VERT_ISP_EN BIT(2) > +#define OV5648_TC20_FLIP_VERT_SENSOR_EN BIT(1) > +#define OV5648_TC20_BINNING_VERT_EN BIT(0) > +#define OV5648_TC21_REG 0x3821 > +#define OV5648_TC21_FLIP_HORZ_ISP_EN BIT(2) > +#define OV5648_TC21_FLIP_HORZ_SENSOR_EN BIT(1) > +#define OV5648_TC21_BINNING_HORZ_EN BIT(0) > + > +/* Strobe/exposure */ > + > +#define OV5648_STROBE_REG 0x3b00 > +#define OV5648_FREX_EXP_HH_REG 0x3b01 > +#define OV5648_SHUTTER_DLY_H_REG 0x3b02 > +#define OV5648_SHUTTER_DLY_L_REG 0x3b03 > +#define OV5648_FREX_EXP_H_REG 0x3b04 > +#define OV5648_FREX_EXP_L_REG 0x3b05 > +#define OV5648_FREX_CTRL_REG 0x3b06 > +#define OV5648_FREX_MODE_SEL_REG 0x3b07 > +#define OV5648_FREX_MODE_SEL_FREX_SA1 BIT(4) > +#define OV5648_FREX_MODE_SEL_FX1_FM_EN BIT(3) > +#define OV5648_FREX_MODE_SEL_FREX_INV BIT(2) > +#define OV5648_FREX_MODE_SEL_MODE1 0x0 > +#define OV5648_FREX_MODE_SEL_MODE2 0x1 > +#define OV5648_FREX_MODE_SEL_ROLLING 0x2 > +#define OV5648_FREX_EXP_REQ_REG 0x3b08 > +#define OV5648_FREX_SHUTTER_DLY_REG 0x3b09 > +#define OV5648_FREX_RST_LEN_REG 0x3b0a > +#define OV5648_STROBE_WIDTH_HH_REG 0x3b0b > +#define OV5648_STROBE_WIDTH_H_REG 0x3b0c > + > +/* OTP */ > + > +#define OV5648_OTP_DATA_REG_BASE 0x3d00 > +#define OV5648_OTP_PROGRAM_CTRL_REG 0x3d80 > +#define OV5648_OTP_LOAD_CTRL_REG 0x3d81 > + > +/* PSRAM */ > + > +#define OV5648_PSRAM_CTRL1_REG 0x3f01 > +#define OV5648_PSRAM_CTRLF_REG 0x3f0f > + > +/* Black Level */ > + > +#define OV5648_BLC_CTRL0_REG 0x4000 > +#define OV5648_BLC_CTRL1_REG 0x4001 > +#define OV5648_BLC_CTRL1_START_LINE(v) ((v) & GENMASK(5, 0)) > +#define OV5648_BLC_CTRL2_REG 0x4002 > +#define OV5648_BLC_CTRL2_AUTO_EN BIT(6) > +#define OV5648_BLC_CTRL2_RESET_FRAME_NUM(v) ((v) & GENMASK(5, 0)) > +#define OV5648_BLC_CTRL3_REG 0x4003 > +#define OV5648_BLC_LINE_NUM_REG 0x4004 > +#define OV5648_BLC_LINE_NUM(v) ((v) & GENMASK(7, 0)) > +#define OV5648_BLC_CTRL5_REG 0x4005 > +#define OV5648_BLC_CTRL5_UPDATE_EN BIT(1) > +#define OV5648_BLC_LEVEL_REG 0x4009 > + > +/* Frame */ > + > +#define OV5648_FRAME_CTRL_REG 0x4200 > +#define OV5648_FRAME_ON_NUM_REG 0x4201 > +#define OV5648_FRAME_OFF_NUM_REG 0x4202 > + > +/* MIPI CSI-2 */ > + > +#define OV5648_MIPI_CTRL0_REG 0x4800 > +#define OV5648_MIPI_CTRL0_CLK_LANE_AUTOGATE BIT(5) > +#define OV5648_MIPI_CTRL0_LANE_SYNC_EN BIT(4) > +#define OV5648_MIPI_CTRL0_LANE_SELECT_LANE1 0 > +#define OV5648_MIPI_CTRL0_LANE_SELECT_LANE2 BIT(3) > +#define OV5648_MIPI_CTRL0_IDLE_LP00 0 > +#define OV5648_MIPI_CTRL0_IDLE_LP11 BIT(2) > + > +#define OV5648_MIPI_CTRL1_REG 0x4801 > +#define OV5648_MIPI_CTRL2_REG 0x4802 > +#define OV5648_MIPI_CTRL3_REG 0x4803 > +#define OV5648_MIPI_CTRL4_REG 0x4804 > +#define OV5648_MIPI_CTRL5_REG 0x4805 > +#define OV5648_MIPI_MAX_FRAME_COUNT_H_REG 0x4810 > +#define OV5648_MIPI_MAX_FRAME_COUNT_L_REG 0x4811 > +#define OV5648_MIPI_CTRL14_REG 0x4814 > +#define OV5648_MIPI_DT_SPKT_REG 0x4815 > +#define OV5648_MIPI_HS_ZERO_MIN_H_REG 0x4818 > +#define OV5648_MIPI_HS_ZERO_MIN_L_REG 0x4819 > +#define OV5648_MIPI_HS_TRAIN_MIN_H_REG 0x481a > +#define OV5648_MIPI_HS_TRAIN_MIN_L_REG 0x481b > +#define OV5648_MIPI_CLK_ZERO_MIN_H_REG 0x481c > +#define OV5648_MIPI_CLK_ZERO_MIN_L_REG 0x481d > +#define OV5648_MIPI_CLK_PREPARE_MIN_H_REG 0x481e > +#define OV5648_MIPI_CLK_PREPARE_MIN_L_REG 0x481f > +#define OV5648_MIPI_CLK_POST_MIN_H_REG 0x4820 > +#define OV5648_MIPI_CLK_POST_MIN_L_REG 0x4821 > +#define OV5648_MIPI_CLK_TRAIL_MIN_H_REG 0x4822 > +#define OV5648_MIPI_CLK_TRAIL_MIN_L_REG 0x4823 > +#define OV5648_MIPI_LPX_P_MIN_H_REG 0x4824 > +#define OV5648_MIPI_LPX_P_MIN_L_REG 0x4825 > +#define OV5648_MIPI_HS_PREPARE_MIN_H_REG 0x4826 > +#define OV5648_MIPI_HS_PREPARE_MIN_L_REG 0x4827 > +#define OV5648_MIPI_HS_EXIT_MIN_H_REG 0x4828 > +#define OV5648_MIPI_HS_EXIT_MIN_L_REG 0x4829 > +#define OV5648_MIPI_HS_ZERO_MIN_UI_REG 0x482a > +#define OV5648_MIPI_HS_TRAIL_MIN_UI_REG 0x482b > +#define OV5648_MIPI_CLK_ZERO_MIN_UI_REG 0x482c > +#define OV5648_MIPI_CLK_PREPARE_MIN_UI_REG 0x482d > +#define OV5648_MIPI_CLK_POST_MIN_UI_REG 0x482e > +#define OV5648_MIPI_CLK_TRAIL_MIN_UI_REG 0x482f > +#define OV5648_MIPI_LPX_P_MIN_UI_REG 0x4830 > +#define OV5648_MIPI_HS_PREPARE_MIN_UI_REG 0x4831 > +#define OV5648_MIPI_HS_EXIT_MIN_UI_REG 0x4832 > +#define OV5648_MIPI_REG_MIN_H_REG 0x4833 > +#define OV5648_MIPI_REG_MIN_L_REG 0x4834 > +#define OV5648_MIPI_REG_MAX_H_REG 0x4835 > +#define OV5648_MIPI_REG_MAX_L_REG 0x4836 > +#define OV5648_MIPI_PCLK_PERIOD_REG 0x4837 > +#define OV5648_MIPI_WKUP_DLY_REG 0x4838 > +#define OV5648_MIPI_LP_GPIO_REG 0x483b > +#define OV5648_MIPI_SNR_PCLK_DIV_REG 0x4843 > + > +/* ISP */ > + > +#define OV5648_ISP_CTRL0_REG 0x5000 > +#define OV5648_ISP_CTRL0_BLACK_CORRECT_EN BIT(2) > +#define OV5648_ISP_CTRL0_WHITE_CORRECT_EN BIT(1) > +#define OV5648_ISP_CTRL1_REG 0x5001 > +#define OV5648_ISP_CTRL1_AWB_EN BIT(0) > +#define OV5648_ISP_CTRL2_REG 0x5002 > +#define OV5648_ISP_CTRL2_WIN_EN BIT(6) > +#define OV5648_ISP_CTRL2_OTP_EN BIT(1) > +#define OV5648_ISP_CTRL2_AWB_GAIN_EN BIT(0) > +#define OV5648_ISP_CTRL3_REG 0x5003 > +#define OV5648_ISP_CTRL3_BUF_EN BIT(3) > +#define OV5648_ISP_CTRL3_BIN_MAN_SET BIT(2) > +#define OV5648_ISP_CTRL3_BIN_AUTO_EN BIT(1) > +#define OV5648_ISP_CTRL4_REG 0x5004 > +#define OV5648_ISP_CTRL5_REG 0x5005 > +#define OV5648_ISP_CTRL6_REG 0x5006 > +#define OV5648_ISP_CTRL7_REG 0x5007 > +#define OV5648_ISP_MAN_OFFSET_X_H_REG 0x5008 > +#define OV5648_ISP_MAN_OFFSET_X_L_REG 0x5009 > +#define OV5648_ISP_MAN_OFFSET_Y_H_REG 0x500a > +#define OV5648_ISP_MAN_OFFSET_Y_L_REG 0x500b > +#define OV5648_ISP_MAN_WIN_OFFSET_X_H_REG 0x500c > +#define OV5648_ISP_MAN_WIN_OFFSET_X_L_REG 0x500d > +#define OV5648_ISP_MAN_WIN_OFFSET_Y_H_REG 0x500e > +#define OV5648_ISP_MAN_WIN_OFFSET_Y_L_REG 0x500f > +#define OV5648_ISP_MAN_WIN_OUTPUT_X_H_REG 0x5010 > +#define OV5648_ISP_MAN_WIN_OUTPUT_X_L_REG 0x5011 > +#define OV5648_ISP_MAN_WIN_OUTPUT_Y_H_REG 0x5012 > +#define OV5648_ISP_MAN_WIN_OUTPUT_Y_L_REG 0x5013 > +#define OV5648_ISP_MAN_INPUT_X_H_REG 0x5014 > +#define OV5648_ISP_MAN_INPUT_X_L_REG 0x5015 > +#define OV5648_ISP_MAN_INPUT_Y_H_REG 0x5016 > +#define OV5648_ISP_MAN_INPUT_Y_L_REG 0x5017 > +#define OV5648_ISP_CTRL18_REG 0x5018 > +#define OV5648_ISP_CTRL19_REG 0x5019 > +#define OV5648_ISP_CTRL1A_REG 0x501a > +#define OV5648_ISP_CTRL1D_REG 0x501d > +#define OV5648_ISP_CTRL1F_REG 0x501f > +#define OV5648_ISP_CTRL1F_OUTPUT_EN 3 > +#define OV5648_ISP_CTRL25_REG 0x5025 > + > +#define OV5648_ISP_CTRL3D_REG 0x503d > +#define OV5648_ISP_CTRL3D_PATTERN_EN BIT(7) > +#define OV5648_ISP_CTRL3D_ROLLING_BAR_EN BIT(6) > +#define OV5648_ISP_CTRL3D_TRANSPARENT_MODE BIT(5) > +#define OV5648_ISP_CTRL3D_SQUARES_BW_MODE BIT(4) > +#define OV5648_ISP_CTRL3D_PATTERN_COLOR_BARS 0 > +#define OV5648_ISP_CTRL3D_PATTERN_RANDOM_DATA 1 > +#define OV5648_ISP_CTRL3D_PATTERN_COLOR_SQUARES 2 > +#define OV5648_ISP_CTRL3D_PATTERN_INPUT 3 > + > +#define OV5648_ISP_CTRL3E_REG 0x503e > +#define OV5648_ISP_CTRL4B_REG 0x504b > +#define OV5648_ISP_CTRL4B_POST_BIN_H_EN BIT(5) > +#define OV5648_ISP_CTRL4B_POST_BIN_V_EN BIT(4) > +#define OV5648_ISP_CTRL4C_REG 0x504c > +#define OV5648_ISP_CTRL57_REG 0x5057 > +#define OV5648_ISP_CTRL58_REG 0x5058 > +#define OV5648_ISP_CTRL59_REG 0x5059 > + > +#define OV5648_ISP_WINDOW_START_X_H_REG 0x5980 > +#define OV5648_ISP_WINDOW_START_X_L_REG 0x5981 > +#define OV5648_ISP_WINDOW_START_Y_H_REG 0x5982 > +#define OV5648_ISP_WINDOW_START_Y_L_REG 0x5983 > +#define OV5648_ISP_WINDOW_WIN_X_H_REG 0x5984 > +#define OV5648_ISP_WINDOW_WIN_X_L_REG 0x5985 > +#define OV5648_ISP_WINDOW_WIN_Y_H_REG 0x5986 > +#define OV5648_ISP_WINDOW_WIN_Y_L_REG 0x5987 > +#define OV5648_ISP_WINDOW_MAN_REG 0x5988 > + > +/* White Balance */ > + > +#define OV5648_AWB_CTRL_REG 0x5180 > +#define OV5648_AWB_CTRL_FAST_AWB BIT(6) > +#define OV5648_AWB_CTRL_GAIN_FREEZE_EN BIT(5) > +#define OV5648_AWB_CTRL_SUM_FREEZE_EN BIT(4) > +#define OV5648_AWB_CTRL_GAIN_MANUAL_EN BIT(3) > + > +#define OV5648_AWB_DELTA_REG 0x5181 > +#define OV5648_AWB_STABLE_RANGE_REG 0x5182 > +#define OV5648_AWB_STABLE_RANGE_WIDE_REG 0x5183 > +#define OV5648_HSIZE_MAN_REG 0x5185 > + > +#define OV5648_GAIN_RED_MAN_H_REG 0x5186 > +#define OV5648_GAIN_RED_MAN_H(v) (((v) & GENMASK(11, 8)) >> 8) > +#define OV5648_GAIN_RED_MAN_L_REG 0x5187 > +#define OV5648_GAIN_RED_MAN_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_GAIN_GREEN_MAN_H_REG 0x5188 > +#define OV5648_GAIN_GREEN_MAN_H(v) (((v) & GENMASK(11, 8)) >> 8) > +#define OV5648_GAIN_GREEN_MAN_L_REG 0x5189 > +#define OV5648_GAIN_GREEN_MAN_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_GAIN_BLUE_MAN_H_REG 0x518a > +#define OV5648_GAIN_BLUE_MAN_H(v) (((v) & GENMASK(11, 8)) >> 8) > +#define OV5648_GAIN_BLUE_MAN_L_REG 0x518b > +#define OV5648_GAIN_BLUE_MAN_L(v) ((v) & GENMASK(7, 0)) > +#define OV5648_GAIN_RED_LIMIT_REG 0x518c > +#define OV5648_GAIN_GREEN_LIMIT_REG 0x518d > +#define OV5648_GAIN_BLUE_LIMIT_REG 0x518e > +#define OV5648_AWB_FRAME_COUNT_REG 0x518f > +#define OV5648_AWB_BASE_MAN_REG 0x51df > + > +/* Macros */ > + > +#define ov5648_subdev_sensor(subdev) \ > + container_of(subdev, struct ov5648_sensor, subdev) > + > +#define ov5648_ctrl_subdev(ctrl) \ > + (&container_of(ctrl->handler, struct ov5648_sensor, > ctrls.handler)->subdev) > + > +/* Data structures */ > + > +struct ov5648_register_value { > + u16 address; > + u8 value; > + unsigned int delay_ms; > +}; > + > +/* > + * PLL1 Clock Tree: > + * > + * +-< XVCLK > + * | > + * +-+ pll_pre_div (0x3037 [3:0], special values: 5: 1.5, 7: 2.5) > + * | > + * +-+ pll_mul (0x3036 [7:0]) > + * | > + * +-+ sys_div (0x3035 [7:4]) > + * | > + * +-+ mipi_div (0x3035 [3:0]) > + * | | > + * | +-> MIPI_SCLK > + * | | > + * | +-+ mipi_phy_div (2) > + * | | > + * | +-> MIPI_CLK > + * | > + * +-+ root_div (0x3037 [4]) > + * | > + * +-+ bit_div (0x3034 [3:0], 8 bits: 2, 10 bits: 2.5, other: 1) > + * | > + * +-+ sclk_div (0x3106 [3:2]) > + * | > + * +-> SCLK > + * | > + * +-+ mipi_div (0x3035, 1: PCLK = SCLK) > + * | > + * +-> PCLK > + */ > + > +struct ov5648_pll1_config { > + unsigned int pll_pre_div; > + unsigned int pll_mul; > + unsigned int sys_div; > + unsigned int root_div; > + unsigned int sclk_div; > + unsigned int mipi_div; > +}; > + > +/* > + * PLL2 Clock Tree: > + * > + * +-< XVCLK > + * | > + * +-+ plls_pre_div (0x303d [5:4], special values: 0: 1, 1: 1.5) > + * | > + * +-+ plls_div_r (0x303d [2]) > + * | > + * +-+ plls_mul (0x303b [4:0]) > + * | > + * +-+ sys_div (0x303c [3:0]) > + * | > + * +-+ sel_div (0x303d [1:0], special values: 0: 1, 3: 2.5) > + * | > + * +-> ADCLK > + */ > + > +struct ov5648_pll2_config { > + unsigned int plls_pre_div; > + unsigned int plls_div_r; > + unsigned int plls_mul; > + unsigned int sys_div; > + unsigned int sel_div; > +}; > + > +/* > + * General formulas for (array-centered) mode calculation: > + * - photo_array_width = 2624 > + * - 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 = 1956 > + * - crop_start_y = (photo_array_height - output_size_y) / 2 > + * - crop_end_y = crop_start_y + offset_y + output_size_y - 1 > + */ > + > +struct ov5648_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; > + > + bool binning_x; > + bool binning_y; > + > + unsigned int inc_x_odd; > + unsigned int inc_x_even; > + unsigned int inc_y_odd; > + unsigned int inc_y_even; > + > + /* 8-bit frame interval followed by 10-bit frame interval. */ > + struct v4l2_fract frame_interval[2]; > + > + /* 8-bit config followed by 10-bit config. */ > + const struct ov5648_pll1_config *pll1_config[2]; > + const struct ov5648_pll2_config *pll2_config; > + > + const struct ov5648_register_value *register_values; > + unsigned int register_values_count; > +}; > + > +struct ov5648_state { > + const struct ov5648_mode *mode; > + u32 mbus_code; > + > + bool streaming; > +}; > + > +struct ov5648_ctrls { > + struct v4l2_ctrl *exposure_auto; > + struct v4l2_ctrl *exposure; > + > + struct v4l2_ctrl *gain_auto; > + struct v4l2_ctrl *gain; > + > + struct v4l2_ctrl *white_balance_auto; > + struct v4l2_ctrl *red_balance; > + struct v4l2_ctrl *blue_balance; > + > + struct v4l2_ctrl *link_freq; > + struct v4l2_ctrl *pixel_rate; > + > + struct v4l2_ctrl_handler handler; > +} __packed; > + > +struct ov5648_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 *xvclk; > + > + struct v4l2_fwnode_endpoint endpoint; > + struct v4l2_subdev subdev; > + struct media_pad pad; > + > + struct mutex mutex; > + > + struct ov5648_state state; > + struct ov5648_ctrls ctrls; > +}; > + > +/* Static definitions */ > + > +/* > + * XVCLK = 24 MHz > + * SCLK = 84 MHz > + * PCLK = 84 MHz > + */ > +static const struct ov5648_pll1_config ov5648_pll1_config_native_8_bits = { > + .pll_pre_div = 3, > + .pll_mul = 84, > + .sys_div = 2, > + .root_div = 1, > + .sclk_div = 1, > + .mipi_div = 1, > +}; > + > +/* > + * XVCLK = 24 MHz > + * SCLK = 84 MHz > + * PCLK = 84 MHz > + */ > +static const struct ov5648_pll1_config ov5648_pll1_config_native_10_bits = { > + .pll_pre_div = 3, > + .pll_mul = 105, > + .sys_div = 2, > + .root_div = 1, > + .sclk_div = 1, > + .mipi_div = 1, > +}; > + > +/* > + * XVCLK = 24 MHz > + * ADCLK = 200 MHz > + */ > +static const struct ov5648_pll2_config ov5648_pll2_config_native = { > + .plls_pre_div = 3, > + .plls_div_r = 1, > + .plls_mul = 25, > + .sys_div = 1, > + .sel_div = 1, > +}; > + > +static const struct ov5648_mode ov5648_modes[] = { > + /* 2592x1944 */ > + { > + /* Horizontal */ > + .crop_start_x = 16, > + .offset_x = 0, > + .output_size_x = 2592, > + .crop_end_x = 2607, > + .hts = 2816, > + > + /* Vertical */ > + .crop_start_y = 6, > + .offset_y = 0, > + .output_size_y = 1944, > + .crop_end_y = 1949, > + .vts = 1984, > + > + /* Subsample increase */ > + .inc_x_odd = 1, > + .inc_x_even = 1, > + .inc_y_odd = 1, > + .inc_y_even = 1, > + > + /* Frame Interval */ > + .frame_interval = { > + { 1, 15 }, > + { 1, 15 }, > + }, > + > + /* PLL */ > + .pll1_config = { > + &ov5648_pll1_config_native_8_bits, > + &ov5648_pll1_config_native_10_bits, > + }, > + .pll2_config = &ov5648_pll2_config_native, > + }, > + /* 1600x1200 (UXGA) */ > + { > + /* Horizontal */ > + .crop_start_x = 512, > + .offset_x = 0, > + .output_size_x = 1600, > + .crop_end_x = 2111, > + .hts = 2816, > + > + /* Vertical */ > + .crop_start_y = 378, > + .offset_y = 0, > + .output_size_y = 1200, > + .crop_end_y = 1577, > + .vts = 1984, > + > + /* Subsample increase */ > + .inc_x_odd = 1, > + .inc_x_even = 1, > + .inc_y_odd = 1, > + .inc_y_even = 1, > + > + /* Frame Interval */ > + .frame_interval = { > + { 1, 15 }, > + { 1, 15 }, > + }, > + > + /* PLL */ > + .pll1_config = { > + &ov5648_pll1_config_native_8_bits, > + &ov5648_pll1_config_native_10_bits, > + }, > + .pll2_config = &ov5648_pll2_config_native, > + }, > + /* 1920x1080 (Full HD) */ > + { > + /* Horizontal */ > + .crop_start_x = 352, > + .offset_x = 0, > + .output_size_x = 1920, > + .crop_end_x = 2271, > + .hts = 2816, > + > + /* Vertical */ > + .crop_start_y = 438, > + .offset_y = 0, > + .output_size_y = 1080, > + .crop_end_y = 1517, > + .vts = 1984, > + > + /* Subsample increase */ > + .inc_x_odd = 1, > + .inc_x_even = 1, > + .inc_y_odd = 1, > + .inc_y_even = 1, > + > + /* Frame Interval */ > + .frame_interval = { > + { 1, 15 }, > + { 1, 15 }, > + }, > + > + /* PLL */ > + .pll1_config = { > + &ov5648_pll1_config_native_8_bits, > + &ov5648_pll1_config_native_10_bits, > + }, > + .pll2_config = &ov5648_pll2_config_native, > + }, > + /* 1280x960 */ > + { > + /* Horizontal */ > + .crop_start_x = 16, > + .offset_x = 8, > + .output_size_x = 1280, > + .crop_end_x = 2607, > + .hts = 1912, > + > + /* Vertical */ > + .crop_start_y = 6, > + .offset_y = 6, > + .output_size_y = 960, > + .crop_end_y = 1949, > + .vts = 1496, > + > + /* Binning */ > + .binning_x = true, > + > + /* Subsample increase */ > + .inc_x_odd = 3, > + .inc_x_even = 1, > + .inc_y_odd = 3, > + .inc_y_even = 1, > + > + /* Frame Interval */ > + .frame_interval = { > + { 1, 30 }, > + { 1, 30 }, > + }, > + > + /* PLL */ > + .pll1_config = { > + &ov5648_pll1_config_native_8_bits, > + &ov5648_pll1_config_native_10_bits, > + }, > + .pll2_config = &ov5648_pll2_config_native, > + }, > + /* 1280x720 (HD) */ > + { > + /* Horizontal */ > + .crop_start_x = 16, > + .offset_x = 8, > + .output_size_x = 1280, > + .crop_end_x = 2607, > + .hts = 1912, > + > + /* Vertical */ > + .crop_start_y = 254, > + .offset_y = 2, > + .output_size_y = 720, > + .crop_end_y = 1701, > + .vts = 1496, > + > + /* Binning */ > + .binning_x = true, > + > + /* Subsample increase */ > + .inc_x_odd = 3, > + .inc_x_even = 1, > + .inc_y_odd = 3, > + .inc_y_even = 1, > + > + /* Frame Interval */ > + .frame_interval = { > + { 1, 30 }, > + { 1, 30 }, > + }, > + > + /* PLL */ > + .pll1_config = { > + &ov5648_pll1_config_native_8_bits, > + &ov5648_pll1_config_native_10_bits, > + }, > + .pll2_config = &ov5648_pll2_config_native, > + }, > + /* 640x480 (VGA) */ > + { > + /* Horizontal */ > + .crop_start_x = 0, > + .offset_x = 8, > + .output_size_x = 640, > + .crop_end_x = 2623, > + .hts = 1896, > + > + /* Vertical */ > + .crop_start_y = 0, > + .offset_y = 2, > + .output_size_y = 480, > + .crop_end_y = 1953, > + .vts = 984, > + > + /* Binning */ > + .binning_x = true, > + > + /* Subsample increase */ > + .inc_x_odd = 7, > + .inc_x_even = 1, > + .inc_y_odd = 7, > + .inc_y_even = 1, > + > + /* Frame Interval */ > + .frame_interval = { > + { 1, 30 }, > + { 1, 30 }, > + }, > + > + /* PLL */ > + .pll1_config = { > + &ov5648_pll1_config_native_8_bits, > + &ov5648_pll1_config_native_10_bits, > + }, > + .pll2_config = &ov5648_pll2_config_native, > + }, > +}; > + > +static const u32 ov5648_mbus_codes[] = { > + MEDIA_BUS_FMT_SBGGR8_1X8, > + MEDIA_BUS_FMT_SBGGR10_1X10, > +}; > + > +static const struct ov5648_register_value ov5648_init_sequence[] = { > + /* PSRAM */ > + { OV5648_PSRAM_CTRL1_REG, 0x0d }, > + { OV5648_PSRAM_CTRLF_REG, 0xf5 }, > +}; > + > +static const s64 ov5648_link_freq_menu[] = { > + 210000000, > + 168000000, > +}; > + > +static const char *const ov5648_test_pattern_menu[] = { > + "Disabled", > + "Random data", > + "Color bars", > + "Color bars with rolling bar", > + "Color squares", > + "Color squares with rolling bar" > +}; > + > +static const u8 ov5648_test_pattern_bits[] = { > + 0, > + OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_PATTERN_RANDOM_DATA, > + OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_PATTERN_COLOR_BARS, > + OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_ROLLING_BAR_EN | > + OV5648_ISP_CTRL3D_PATTERN_COLOR_BARS, > + OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_PATTERN_COLOR_SQUARES, > + OV5648_ISP_CTRL3D_PATTERN_EN | OV5648_ISP_CTRL3D_ROLLING_BAR_EN | > + OV5648_ISP_CTRL3D_PATTERN_COLOR_SQUARES, > +}; > + > +/* Input/Output */ > + > +static int ov5648_read(struct ov5648_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 ov5648_write(struct ov5648_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 ov5648_write_sequence(struct ov5648_sensor *sensor, > + const struct ov5648_register_value *sequence, > + unsigned int sequence_count) > +{ > + unsigned int i; > + int ret = 0; > + > + for (i = 0; i < sequence_count; i++) { > + ret = ov5648_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 ov5648_update_bits(struct ov5648_sensor *sensor, u16 address, > + u8 mask, u8 bits) > +{ > + u8 value = 0; > + int ret; > + > + ret = ov5648_read(sensor, address, &value); > + if (ret) > + return ret; > + > + value &= ~mask; > + value |= bits; > + > + ret = ov5648_write(sensor, address, value); > + if (ret) > + return ret; > + > + return 0; > +} > + > +/* Sensor */ > + > +static int ov5648_sw_reset(struct ov5648_sensor *sensor) > +{ > + int ret; > + > + ret = ov5648_write(sensor, OV5648_SW_RESET_REG, OV5648_SW_RESET_RESET); > + if (ret < 0) > + return ret; > + > + return 0; > +} > + > +static int ov5648_sw_standby(struct ov5648_sensor *sensor, int standby) > +{ > + u8 value = 0; > + int ret; > + > + if (!standby) > + value = OV5648_SW_STANDBY_STREAM_ON; > + > + ret = ov5648_write(sensor, OV5648_SW_STANDBY_REG, value); > + if (ret < 0) > + return ret; > + > + return 0; > +} > + > +static int ov5648_chip_id_check(struct ov5648_sensor *sensor) > +{ > + u16 regs[] = { OV5648_CHIP_ID_H_REG, OV5648_CHIP_ID_L_REG }; > + u8 values[] = { OV5648_CHIP_ID_H_VALUE, OV5648_CHIP_ID_L_VALUE }; > + unsigned int i; > + u8 value; > + int ret; > + > + for (i = 0; i < ARRAY_SIZE(regs); i++) { > + ret = ov5648_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 ov5648_avdd_internal_power(struct ov5648_sensor *sensor, int on) > +{ > + int ret; > + > + ret = ov5648_write(sensor, OV5648_A_PWC_PK_O0_REG, > + on ? 0 : OV5648_A_PWC_PK_O0_BP_REGULATOR_N); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_pad_configure(struct ov5648_sensor *sensor) > +{ > + int ret; > + > + /* Configure pads as input. */ > + > + ret = ov5648_write(sensor, OV5648_PAD_OEN1_REG, 0); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_PAD_OEN2_REG, 0); > + if (ret) > + return ret; > + > + /* Disable FREX pin. */ > + > + ret = ov5648_write(sensor, OV5648_PAD_PK_REG, > + OV5648_PAD_PK_DRIVE_STRENGTH_1X | > + OV5648_PAD_PK_FREX_N); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_mipi_configure(struct ov5648_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 = ov5648_write(sensor, OV5648_MIPI_CTRL0_REG, > + OV5648_MIPI_CTRL0_CLK_LANE_AUTOGATE | > + OV5648_MIPI_CTRL0_LANE_SELECT_LANE1 | > + OV5648_MIPI_CTRL0_IDLE_LP11); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_MIPI_SC_CTRL0_REG, > + OV5648_MIPI_SC_CTRL0_MIPI_LANES(lanes_count) | > + OV5648_MIPI_SC_CTRL0_PHY_LP_RX_PD | > + OV5648_MIPI_SC_CTRL0_MIPI_EN); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_black_level_configure(struct ov5648_sensor *sensor) > +{ > + int ret; > + > + /* Up to 6 lines are available for black level calibration. */ > + > + ret = ov5648_write(sensor, OV5648_BLC_CTRL1_REG, > + OV5648_BLC_CTRL1_START_LINE(2)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_BLC_CTRL2_REG, > + OV5648_BLC_CTRL2_AUTO_EN | > + OV5648_BLC_CTRL2_RESET_FRAME_NUM(5)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_BLC_LINE_NUM_REG, > + OV5648_BLC_LINE_NUM(4)); > + if (ret) > + return ret; > + > + ret = ov5648_update_bits(sensor, OV5648_BLC_CTRL5_REG, > + OV5648_BLC_CTRL5_UPDATE_EN, > + OV5648_BLC_CTRL5_UPDATE_EN); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_isp_configure(struct ov5648_sensor *sensor) > +{ > + u8 bits; > + int ret; > + > + /* Enable black and white level correction. */ > + bits = OV5648_ISP_CTRL0_BLACK_CORRECT_EN | > + OV5648_ISP_CTRL0_WHITE_CORRECT_EN; > + > + ret = ov5648_update_bits(sensor, OV5648_ISP_CTRL0_REG, bits, bits); > + if (ret) > + return ret; > + > + /* Enable AWB. */ > + ret = ov5648_write(sensor, OV5648_ISP_CTRL1_REG, > + OV5648_ISP_CTRL1_AWB_EN); > + if (ret) > + return ret; > + > + /* Enable AWB gain and windowing. */ > + ret = ov5648_write(sensor, OV5648_ISP_CTRL2_REG, > + OV5648_ISP_CTRL2_WIN_EN | > + OV5648_ISP_CTRL2_AWB_GAIN_EN); > + if (ret) > + return ret; > + > + /* Enable buffering and auto-binning. */ > + ret = ov5648_write(sensor, OV5648_ISP_CTRL3_REG, > + OV5648_ISP_CTRL3_BUF_EN | > + OV5648_ISP_CTRL3_BIN_AUTO_EN); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_ISP_CTRL4_REG, 0); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_ISP_CTRL1F_REG, > + OV5648_ISP_CTRL1F_OUTPUT_EN); > + if (ret) > + return ret; > + > + /* Enable post-binning filters. */ > + ret = ov5648_write(sensor, OV5648_ISP_CTRL4B_REG, > + OV5648_ISP_CTRL4B_POST_BIN_H_EN | > + OV5648_ISP_CTRL4B_POST_BIN_V_EN); > + if (ret) > + return ret; > + > + /* Disable debanding and night mode. Debug bit seems necessary. */ > + ret = ov5648_write(sensor, OV5648_AEC_CTRL0_REG, > + OV5648_AEC_CTRL0_DEBUG | > + OV5648_AEC_CTRL0_START_SEL_EN); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_MANUAL_CTRL_REG, > + OV5648_MANUAL_CTRL_FRAME_DELAY(1)); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static unsigned long ov5648_mode_pll1_rate(struct ov5648_sensor *sensor, > + const struct ov5648_pll1_config > *config) > +{ > + unsigned long xvclk_rate; > + unsigned long pll1_rate; > + > + xvclk_rate = clk_get_rate(sensor->xvclk); > + pll1_rate = xvclk_rate * config->pll_mul; > + > + switch (config->pll_pre_div) { > + case 5: > + pll1_rate *= 3; > + pll1_rate /= 2; > + break; > + case 7: > + pll1_rate *= 5; > + pll1_rate /= 2; > + break; > + default: > + pll1_rate /= config->pll_pre_div; > + break; > + } > + > + return pll1_rate; > +} > + > +static int ov5648_mode_pll1_configure(struct ov5648_sensor *sensor, > + const struct ov5648_mode *mode, > + u32 mbus_code) > +{ > + const struct ov5648_pll1_config *config; > + u8 value; > + int ret; > + > + value = OV5648_PLL_CTRL0_PLL_CHARGE_PUMP(1); > + > + switch (mbus_code) { > + case MEDIA_BUS_FMT_SBGGR8_1X8: > + config = mode->pll1_config[0]; > + value |= OV5648_PLL_CTRL0_BITS(8); > + break; > + case MEDIA_BUS_FMT_SBGGR10_1X10: > + config = mode->pll1_config[1]; > + value |= OV5648_PLL_CTRL0_BITS(10); > + break; > + default: > + return -EINVAL; > + } > + > + ret = ov5648_write(sensor, OV5648_PLL_CTRL0_REG, value); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_PLL_DIV_REG, > + OV5648_PLL_DIV_ROOT_DIV(config->root_div) | > + OV5648_PLL_DIV_PLL_PRE_DIV(config->pll_pre_div)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_PLL_MUL_REG, > + OV5648_PLL_MUL(config->pll_mul)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_PLL_CTRL1_REG, > + OV5648_PLL_CTRL1_SYS_DIV(config->sys_div) | > + OV5648_PLL_CTRL1_MIPI_DIV(config->mipi_div)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_SRB_CTRL_REG, > + OV5648_SRB_CTRL_SCLK_DIV(config->sclk_div) | > + OV5648_SRB_CTRL_SCLK_ARBITER_EN); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_mode_pll2_configure(struct ov5648_sensor *sensor, > + const struct ov5648_mode *mode) > +{ > + const struct ov5648_pll2_config *config = mode->pll2_config; > + int ret; > + > + ret = ov5648_write(sensor, OV5648_PLLS_DIV_REG, > + OV5648_PLLS_DIV_PLLS_PRE_DIV(config->plls_pre_div) | > + OV5648_PLLS_DIV_PLLS_DIV_R(config->plls_div_r) | > + OV5648_PLLS_DIV_PLLS_SEL_DIV(config->sel_div)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_PLLS_MUL_REG, > + OV5648_PLLS_MUL(config->plls_mul)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_PLLS_CTRL_REG, > + OV5648_PLLS_CTRL_PLL_CHARGE_PUMP(1) | > + OV5648_PLLS_CTRL_SYS_DIV(config->sys_div)); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_mode_configure(struct ov5648_sensor *sensor, > + const struct ov5648_mode *mode, u32 mbus_code) > +{ > + int ret; > + > + /* Crop Start X */ > + > + ret = ov5648_write(sensor, OV5648_CROP_START_X_H_REG, > + OV5648_CROP_START_X_H(mode->crop_start_x)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_CROP_START_X_L_REG, > + OV5648_CROP_START_X_L(mode->crop_start_x)); > + if (ret) > + return ret; > + > + /* Offset X */ > + > + ret = ov5648_write(sensor, OV5648_OFFSET_X_H_REG, > + OV5648_OFFSET_X_H(mode->offset_x)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_OFFSET_X_L_REG, > + OV5648_OFFSET_X_L(mode->offset_x)); > + if (ret) > + return ret; > + > + /* Output Size X */ > + > + ret = ov5648_write(sensor, OV5648_OUTPUT_SIZE_X_H_REG, > + OV5648_OUTPUT_SIZE_X_H(mode->output_size_x)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_OUTPUT_SIZE_X_L_REG, > + OV5648_OUTPUT_SIZE_X_L(mode->output_size_x)); > + if (ret) > + return ret; > + > + /* Crop End X */ > + > + ret = ov5648_write(sensor, OV5648_CROP_END_X_H_REG, > + OV5648_CROP_END_X_H(mode->crop_end_x)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_CROP_END_X_L_REG, > + OV5648_CROP_END_X_L(mode->crop_end_x)); > + if (ret) > + return ret; > + > + /* Horizontal Total Size */ > + > + ret = ov5648_write(sensor, OV5648_HTS_H_REG, OV5648_HTS_H(mode->hts)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_HTS_L_REG, OV5648_HTS_L(mode->hts)); > + if (ret) > + return ret; > + > + /* Crop Start Y */ > + > + ret = ov5648_write(sensor, OV5648_CROP_START_Y_H_REG, > + OV5648_CROP_START_Y_H(mode->crop_start_y)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_CROP_START_Y_L_REG, > + OV5648_CROP_START_Y_L(mode->crop_start_y)); > + if (ret) > + return ret; > + > + /* Offset Y */ > + > + ret = ov5648_write(sensor, OV5648_OFFSET_Y_H_REG, > + OV5648_OFFSET_Y_H(mode->offset_y)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_OFFSET_Y_L_REG, > + OV5648_OFFSET_Y_L(mode->offset_y)); > + if (ret) > + return ret; > + > + /* Output Size Y */ > + > + ret = ov5648_write(sensor, OV5648_OUTPUT_SIZE_Y_H_REG, > + OV5648_OUTPUT_SIZE_Y_H(mode->output_size_y)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_OUTPUT_SIZE_Y_L_REG, > + OV5648_OUTPUT_SIZE_Y_L(mode->output_size_y)); > + if (ret) > + return ret; > + > + /* Crop End Y */ > + > + ret = ov5648_write(sensor, OV5648_CROP_END_Y_H_REG, > + OV5648_CROP_END_Y_H(mode->crop_end_y)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_CROP_END_Y_L_REG, > + OV5648_CROP_END_Y_L(mode->crop_end_y)); > + if (ret) > + return ret; > + > + /* Vertical Total Size */ > + > + ret = ov5648_write(sensor, OV5648_VTS_H_REG, OV5648_VTS_H(mode->vts)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_VTS_L_REG, OV5648_VTS_L(mode->vts)); > + if (ret) > + return ret; > + > + /* Flip/Mirror/Binning */ > + > + /* > + * A debug bit is enabled by default and needs to be cleared for > + * subsampling to work. > + */ > + ret = ov5648_update_bits(sensor, OV5648_TC20_REG, > + OV5648_TC20_DEBUG | > + OV5648_TC20_BINNING_VERT_EN, > + mode->binning_y ? OV5648_TC20_BINNING_VERT_EN : > + 0); > + if (ret) > + return ret; > + > + ret = ov5648_update_bits(sensor, OV5648_TC21_REG, > + OV5648_TC21_BINNING_HORZ_EN, > + mode->binning_x ? OV5648_TC21_BINNING_HORZ_EN : > + 0); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_SUB_INC_X_REG, > + OV5648_SUB_INC_X_ODD(mode->inc_x_odd) | > + OV5648_SUB_INC_X_EVEN(mode->inc_x_even)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_SUB_INC_Y_REG, > + OV5648_SUB_INC_Y_ODD(mode->inc_y_odd) | > + OV5648_SUB_INC_Y_EVEN(mode->inc_y_even)); > + if (ret) > + return ret; > + > + /* PLLs */ > + > + ret = ov5648_mode_pll1_configure(sensor, mode, mbus_code); > + if (ret) > + return ret; > + > + ret = ov5648_mode_pll2_configure(sensor, mode); > + if (ret) > + return ret; > + > + /* Extra registers */ > + > + if (mode->register_values) { > + ret = ov5648_write_sequence(sensor, mode->register_values, > + mode->register_values_count); > + if (ret) > + return ret; > + } > + > + return 0; > +} > + > +static unsigned long ov5648_mode_mipi_clk_rate(struct ov5648_sensor *sensor, > + const struct ov5648_mode *mode, > + u32 mbus_code) > +{ > + const struct ov5648_pll1_config *config; > + unsigned long pll1_rate; > + > + switch (mbus_code) { > + case MEDIA_BUS_FMT_SBGGR8_1X8: > + config = mode->pll1_config[0]; > + break; > + case MEDIA_BUS_FMT_SBGGR10_1X10: > + config = mode->pll1_config[1]; > + break; > + default: > + return 0; > + } > + > + pll1_rate = ov5648_mode_pll1_rate(sensor, config); > + > + return pll1_rate / config->sys_div / config->mipi_div / 2; > +} > + > +/* Exposure */ > + > +static int ov5648_exposure_auto_configure(struct ov5648_sensor *sensor, > + bool enable) > +{ > + int ret; > + > + ret = ov5648_update_bits(sensor, OV5648_MANUAL_CTRL_REG, > + OV5648_MANUAL_CTRL_AEC_MANUAL_EN, > + enable ? 0 : OV5648_MANUAL_CTRL_AEC_MANUAL_EN); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_exposure_configure(struct ov5648_sensor *sensor, u32 > exposure) > +{ > + struct ov5648_ctrls *ctrls = &sensor->ctrls; > + int ret; > + > + if (ctrls->exposure_auto->val != V4L2_EXPOSURE_MANUAL) > + return -EINVAL; > + > + ret = ov5648_write(sensor, OV5648_EXPOSURE_CTRL_HH_REG, > + OV5648_EXPOSURE_CTRL_HH(exposure)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_EXPOSURE_CTRL_H_REG, > + OV5648_EXPOSURE_CTRL_H(exposure)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_EXPOSURE_CTRL_L_REG, > + OV5648_EXPOSURE_CTRL_L(exposure)); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_exposure_value(struct ov5648_sensor *sensor, > + u32 *exposure) > +{ > + u8 exposure_hh = 0, exposure_h = 0, exposure_l = 0; > + int ret; > + > + ret = ov5648_read(sensor, OV5648_EXPOSURE_CTRL_HH_REG, &exposure_hh); > + if (ret) > + return ret; > + > + ret = ov5648_read(sensor, OV5648_EXPOSURE_CTRL_H_REG, &exposure_h); > + if (ret) > + return ret; > + > + ret = ov5648_read(sensor, OV5648_EXPOSURE_CTRL_L_REG, &exposure_l); > + if (ret) > + return ret; > + > + *exposure = OV5648_EXPOSURE_CTRL_HH_VALUE((u32)exposure_hh) | > + OV5648_EXPOSURE_CTRL_H_VALUE((u32)exposure_h) | > + OV5648_EXPOSURE_CTRL_L_VALUE((u32)exposure_l); > + > + return 0; > +} > + > +/* Gain */ > + > +static int ov5648_gain_auto_configure(struct ov5648_sensor *sensor, bool > enable) > +{ > + int ret; > + > + ret = ov5648_update_bits(sensor, OV5648_MANUAL_CTRL_REG, > + OV5648_MANUAL_CTRL_AGC_MANUAL_EN, > + enable ? 0 : OV5648_MANUAL_CTRL_AGC_MANUAL_EN); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_gain_configure(struct ov5648_sensor *sensor, u32 gain) > +{ > + struct ov5648_ctrls *ctrls = &sensor->ctrls; > + int ret; > + > + if (ctrls->gain_auto->val) > + return -EINVAL; > + > + ret = ov5648_write(sensor, OV5648_GAIN_CTRL_H_REG, > + OV5648_GAIN_CTRL_H(gain)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_GAIN_CTRL_L_REG, > + OV5648_GAIN_CTRL_L(gain)); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_gain_value(struct ov5648_sensor *sensor, u32 *gain) > +{ > + u8 gain_h = 0, gain_l = 0; > + int ret; > + > + ret = ov5648_read(sensor, OV5648_GAIN_CTRL_H_REG, &gain_h); > + if (ret) > + return ret; > + > + ret = ov5648_read(sensor, OV5648_GAIN_CTRL_L_REG, &gain_l); > + if (ret) > + return ret; > + > + *gain = OV5648_GAIN_CTRL_H_VALUE((u32)gain_h) | > + OV5648_GAIN_CTRL_L_VALUE((u32)gain_l); > + > + return 0; > +} > + > +/* White Balance */ > + > +static int ov5648_white_balance_auto_configure(struct ov5648_sensor *sensor, > + bool enable) > +{ > + int ret; > + > + ret = ov5648_write(sensor, OV5648_AWB_CTRL_REG, > + enable ? 0 : OV5648_AWB_CTRL_GAIN_MANUAL_EN); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_white_balance_configure(struct ov5648_sensor *sensor, > + u32 red_balance, u32 blue_balance) > +{ > + struct ov5648_ctrls *ctrls = &sensor->ctrls; > + int ret; > + > + if (ctrls->white_balance_auto->val) > + return -EINVAL; > + > + ret = ov5648_write(sensor, OV5648_GAIN_RED_MAN_H_REG, > + OV5648_GAIN_RED_MAN_H(red_balance)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_GAIN_RED_MAN_L_REG, > + OV5648_GAIN_RED_MAN_L(red_balance)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_GAIN_BLUE_MAN_H_REG, > + OV5648_GAIN_BLUE_MAN_H(blue_balance)); > + if (ret) > + return ret; > + > + ret = ov5648_write(sensor, OV5648_GAIN_BLUE_MAN_L_REG, > + OV5648_GAIN_BLUE_MAN_L(blue_balance)); return ... Same below (and above). > + if (ret) > + return ret; > + > + return 0; > +} > + > +/* Flip */ > + > +static int ov5648_flip_vert_configure(struct ov5648_sensor *sensor, bool > enable) > +{ > + u8 bits = OV5648_TC20_FLIP_VERT_ISP_EN | > + OV5648_TC20_FLIP_VERT_SENSOR_EN; > + int ret; > + > + ret = ov5648_update_bits(sensor, OV5648_TC20_REG, bits, > + enable ? bits : 0); > + if (ret) > + return ret; > + > + return 0; > +} > + > +static int ov5648_flip_horz_configure(struct ov5648_sensor *sensor, bool > enable) > +{ > + u8 bits = OV5648_TC21_FLIP_HORZ_ISP_EN | > + OV5648_TC21_FLIP_HORZ_SENSOR_EN; > + int ret; > + > + ret = ov5648_update_bits(sensor, OV5648_TC21_REG, bits, > + enable ? bits : 0); > + if (ret) > + return ret; > + > + return 0; > +} > + > +/* Test Pattern */ > + > +static int ov5648_test_pattern_configure(struct ov5648_sensor *sensor, > + unsigned int index) > +{ > + int ret; > + > + if (index >= ARRAY_SIZE(ov5648_test_pattern_bits)) > + return -EINVAL; > + > + ret = ov5648_write(sensor, OV5648_ISP_CTRL3D_REG, > + ov5648_test_pattern_bits[index]); > + if (ret) > + return ret; > + > + return 0; > +} > + > +/* State */ > + > +static int ov5648_state_mipi_configure(struct ov5648_sensor *sensor, > + const struct ov5648_mode *mode, > + u32 mbus_code) > +{ > + struct ov5648_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 = ov5648_mode_mipi_clk_rate(sensor, mode, mbus_code); > + if (!mipi_clk_rate) > + return -EINVAL; > + > + for (i = 0; i < ARRAY_SIZE(ov5648_link_freq_menu); i++) { > + s64 freq = ov5648_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(ov5648_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_SBGGR8_1X8: > + bits_per_sample = 8; > + break; > + 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 ov5648_state_configure(struct ov5648_sensor *sensor, > + const struct ov5648_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 = ov5648_mode_configure(sensor, mode, mbus_code); > + if (ret) > + return ret; > + } > + > + ret = ov5648_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 ov5648_state_init(struct ov5648_sensor *sensor) > +{ > + return ov5648_state_configure(sensor, &ov5648_modes[0], > + ov5648_mbus_codes[0]); > +} > + > +/* Sensor Base */ > + > +static int ov5648_sensor_init(struct ov5648_sensor *sensor) > +{ > + int ret; > + > + ret = ov5648_sw_reset(sensor); > + if (ret) { > + dev_err(sensor->dev, "failed to perform sw reset\n"); > + return ret; > + } > + > + ret = ov5648_sw_standby(sensor, 1); > + if (ret) { > + dev_err(sensor->dev, "failed to set sensor standby\n"); > + return ret; > + } > + > + ret = ov5648_chip_id_check(sensor); > + if (ret) { > + dev_err(sensor->dev, "failed to check sensor chip id\n"); > + return ret; > + } > + > + ret = ov5648_avdd_internal_power(sensor, !sensor->avdd); > + if (ret) { > + dev_err(sensor->dev, "failed to set internal avdd power\n"); > + return ret; > + } > + > + ret = ov5648_write_sequence(sensor, ov5648_init_sequence, > + ARRAY_SIZE(ov5648_init_sequence)); > + if (ret) { > + dev_err(sensor->dev, "failed to write init sequence\n"); > + return ret; > + } > + > + ret = ov5648_pad_configure(sensor); > + if (ret) { > + dev_err(sensor->dev, "failed to configure pad\n"); > + return ret; > + } > + > + ret = ov5648_mipi_configure(sensor); > + if (ret) { > + dev_err(sensor->dev, "failed to configure MIPI\n"); > + return ret; > + } > + > + ret = ov5648_isp_configure(sensor); > + if (ret) { > + dev_err(sensor->dev, "failed to configure ISP\n"); > + return ret; > + } > + > + ret = ov5648_black_level_configure(sensor); > + if (ret) { > + dev_err(sensor->dev, "failed to configure black level\n"); > + return ret; > + } > + > + /* Configure current mode. */ > + ret = ov5648_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 ov5648_sensor_power(struct ov5648_sensor *sensor, bool on) > +{ > + /* Keep initialized to zero for disable label. */ > + int ret = 0; > + > + /* > + * General notes about the power sequence: > + * - power-down GPIO must be active (low) during power-on; > + * - reset GPIO state does not matter during power-on; > + * - XVCLK must be provided 1 ms before register access; > + * - 10 ms are needed between power-down deassert and register access. > + */ > + > + /* Note that regulator-and-GPIO-based power is untested. */ > + 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; > + } > + > + if (sensor->avdd) { > + 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; > + } > + > + /* According to OV5648 power up diagram. */ > + usleep_range(5000, 10000); > + > + ret = clk_prepare_enable(sensor->xvclk); > + if (ret) { > + dev_err(sensor->dev, "failed to enable XVCLK clock\n"); > + goto disable; > + } > + > + gpiod_set_value_cansleep(sensor->reset, 0); > + gpiod_set_value_cansleep(sensor->powerdown, 0); > + > + usleep_range(20000, 25000); > + } else { > +disable: > + gpiod_set_value_cansleep(sensor->powerdown, 1); > + gpiod_set_value_cansleep(sensor->reset, 1); > + > + clk_disable_unprepare(sensor->xvclk); > + > + regulator_disable(sensor->dvdd); > + > + if (sensor->avdd) > + regulator_disable(sensor->avdd); > + > + regulator_disable(sensor->dovdd); > + } > + > + return ret; > +} > + > +/* Controls */ > + > +static int ov5648_g_volatile_ctrl(struct v4l2_ctrl *ctrl) > +{ > + struct v4l2_subdev *subdev = ov5648_ctrl_subdev(ctrl); > + struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); > + struct ov5648_ctrls *ctrls = &sensor->ctrls; > + int ret; > + > + switch (ctrl->id) { > + case V4L2_CID_EXPOSURE_AUTO: > + ret = ov5648_exposure_value(sensor, &ctrls->exposure->val); > + if (ret) > + return ret; > + break; > + case V4L2_CID_AUTOGAIN: > + ret = ov5648_gain_value(sensor, &ctrls->gain->val); > + if (ret) > + return ret; > + break; > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > +static int ov5648_s_ctrl(struct v4l2_ctrl *ctrl) > +{ > + struct v4l2_subdev *subdev = ov5648_ctrl_subdev(ctrl); > + struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); > + struct ov5648_ctrls *ctrls = &sensor->ctrls; > + unsigned int index; > + bool enable; > + 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_AUTO: > + enable = ctrl->val == V4L2_EXPOSURE_AUTO; > + > + ret = ov5648_exposure_auto_configure(sensor, enable); > + if (ret) > + return ret; > + > + if (!enable && ctrls->exposure->is_new) { > + ret = ov5648_exposure_configure(sensor, > + ctrls->exposure->val); > + if (ret) > + return ret; > + } > + break; > + case V4L2_CID_AUTOGAIN: > + enable = !!ctrl->val; > + > + ret = ov5648_gain_auto_configure(sensor, enable); > + if (ret) > + return ret; > + > + if (!enable) { > + ret = ov5648_gain_configure(sensor, ctrls->gain->val); > + if (ret) > + return ret; > + } > + break; > + case V4L2_CID_AUTO_WHITE_BALANCE: > + enable = !!ctrl->val; > + > + ret = ov5648_white_balance_auto_configure(sensor, enable); > + if (ret) > + return ret; > + > + if (!enable) { > + ret = ov5648_white_balance_configure(sensor, > + > ctrls->red_balance->val, > + > ctrls->blue_balance->val); > + if (ret) > + return ret; > + } > + break; > + case V4L2_CID_HFLIP: > + enable = !!ctrl->val; > + return ov5648_flip_horz_configure(sensor, enable); > + case V4L2_CID_VFLIP: > + enable = !!ctrl->val; > + return ov5648_flip_vert_configure(sensor, enable); > + case V4L2_CID_TEST_PATTERN: > + index = (unsigned int)ctrl->val; > + return ov5648_test_pattern_configure(sensor, index); > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > +static const struct v4l2_ctrl_ops ov5648_ctrl_ops = { > + .g_volatile_ctrl = ov5648_g_volatile_ctrl, > + .s_ctrl = ov5648_s_ctrl, > +}; > + > +static int ov5648_ctrls_init(struct ov5648_sensor *sensor) > +{ > + struct ov5648_ctrls *ctrls = &sensor->ctrls; > + struct v4l2_ctrl_handler *handler = &ctrls->handler; > + const struct v4l2_ctrl_ops *ops = &ov5648_ctrl_ops; > + int ret; > + > + v4l2_ctrl_handler_init(handler, 32); > + > + /* Use our mutex for ctrl locking. */ > + handler->lock = &sensor->mutex; > + > + /* Exposure */ > + > + ctrls->exposure_auto = v4l2_ctrl_new_std_menu(handler, ops, > + V4L2_CID_EXPOSURE_AUTO, > + V4L2_EXPOSURE_MANUAL, 0, > + V4L2_EXPOSURE_AUTO); > + > + ctrls->exposure = v4l2_ctrl_new_std(handler, ops, V4L2_CID_EXPOSURE, > + 16, 1048575, 16, 512); > + ctrls->exposure->flags |= V4L2_CTRL_FLAG_VOLATILE; > + > + v4l2_ctrl_auto_cluster(2, &ctrls->exposure_auto, 1, true); > + > + /* Gain */ > + > + ctrls->gain_auto = > + v4l2_ctrl_new_std(handler, ops, V4L2_CID_AUTOGAIN, 0, 1, 1, 1); > + > + ctrls->gain = v4l2_ctrl_new_std(handler, ops, V4L2_CID_GAIN, 16, 1023, > + 16, 16); > + ctrls->gain->flags |= V4L2_CTRL_FLAG_VOLATILE; Note that ctrls->gain may be NULL here. Please move after the handler's error check. Same for link_freq and pixel_rate. > + > + v4l2_ctrl_auto_cluster(2, &ctrls->gain_auto, 0, true); > + > + /* White Balance */ > + > + ctrls->white_balance_auto = > + v4l2_ctrl_new_std(handler, ops, V4L2_CID_AUTO_WHITE_BALANCE, 0, > + 1, 1, 1); > + > + ctrls->red_balance = v4l2_ctrl_new_std(handler, ops, > + V4L2_CID_RED_BALANCE, 0, 4095, > + 1, 1024); > + > + ctrls->blue_balance = v4l2_ctrl_new_std(handler, ops, > + V4L2_CID_BLUE_BALANCE, 0, 4095, > + 1, 1024); > + > + v4l2_ctrl_auto_cluster(3, &ctrls->white_balance_auto, 0, false); > + > + /* 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(ov5648_test_pattern_menu) - 1, > + 0, 0, ov5648_test_pattern_menu); > + > + /* MIPI CSI-2 */ > + > + ctrls->link_freq = > + v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ, > + ARRAY_SIZE(ov5648_link_freq_menu) - 1, > + 0, ov5648_link_freq_menu); > + > + ctrls->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; > + > + ctrls->pixel_rate = > + v4l2_ctrl_new_std(handler, NULL, V4L2_CID_PIXEL_RATE, 1, > + INT_MAX, 1, 1); > + > + ctrls->pixel_rate->flags |= V4L2_CTRL_FLAG_READ_ONLY; > + > + if (handler->error) { > + ret = handler->error; > + goto error_ctrls; > + } > + > + sensor->subdev.ctrl_handler = handler; > + > + return 0; > + > +error_ctrls: > + v4l2_ctrl_handler_free(handler); > + > + return ret; > +} > + > +/* Subdev Video Operations */ > + > +static int ov5648_s_stream(struct v4l2_subdev *subdev, int enable) > +{ > + struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); > + struct ov5648_state *state = &sensor->state; > + int ret = 0; > + > + 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 = ov5648_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 ov5648_g_frame_interval(struct v4l2_subdev *subdev, > + struct v4l2_subdev_frame_interval *interval) > +{ > + struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); > + const struct ov5648_mode *mode; > + int ret = 0; > + > + mutex_lock(&sensor->mutex); > + > + mode = sensor->state.mode; > + > + switch (sensor->state.mbus_code) { > + case MEDIA_BUS_FMT_SBGGR8_1X8: > + interval->interval = mode->frame_interval[0]; > + break; > + case MEDIA_BUS_FMT_SBGGR10_1X10: > + interval->interval = mode->frame_interval[1]; > + break; > + default: > + ret = -EINVAL; > + } > + > + mutex_unlock(&sensor->mutex); > + > + return ret; > +} > + > +static const struct v4l2_subdev_video_ops ov5648_subdev_video_ops = { > + .s_stream = ov5648_s_stream, > + .g_frame_interval = ov5648_g_frame_interval, > + .s_frame_interval = ov5648_g_frame_interval, > +}; > + > +/* Subdev Pad Operations */ > + > +static int ov5648_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(ov5648_mbus_codes)) > + return -EINVAL; > + > + code_enum->code = ov5648_mbus_codes[code_enum->index]; > + > + return 0; > +} > + > +static void ov5648_mbus_format_fill(struct v4l2_mbus_framefmt *mbus_format, > + u32 mbus_code, > + const struct ov5648_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 ov5648_get_fmt(struct v4l2_subdev *subdev, > + struct v4l2_subdev_pad_config *config, > + struct v4l2_subdev_format *format) > +{ > + struct ov5648_sensor *sensor = ov5648_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 > + ov5648_mbus_format_fill(mbus_format, sensor->state.mbus_code, > + sensor->state.mode); > + > + mutex_unlock(&sensor->mutex); > + > + return 0; > +} > + > +static int ov5648_set_fmt(struct v4l2_subdev *subdev, > + struct v4l2_subdev_pad_config *config, > + struct v4l2_subdev_format *format) > +{ > + struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); > + struct v4l2_mbus_framefmt *mbus_format = &format->format; > + const struct ov5648_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(ov5648_mbus_codes); index++) { > + if (ov5648_mbus_codes[index] == mbus_format->code) { > + mbus_code = mbus_format->code; > + break; > + } > + } > + > + /* Fallback to default. */ > + if (!mbus_code) > + mbus_code = ov5648_mbus_codes[0]; > + > + /* Find the mode with nearest dimensions. */ > + mode = v4l2_find_nearest_size(ov5648_modes, ARRAY_SIZE(ov5648_modes), > + output_size_x, output_size_y, > + mbus_format->width, mbus_format->height); > + if (!mode) > + return -EINVAL; > + > + ov5648_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 = ov5648_state_configure(sensor, mode, mbus_code); > + if (ret) > + goto complete; > + } > + > +complete: > + mutex_unlock(&sensor->mutex); > + > + return ret; > +} > + > +static int ov5648_enum_frame_size(struct v4l2_subdev *subdev, > + struct v4l2_subdev_pad_config *config, > + struct v4l2_subdev_frame_size_enum *size_enum) > +{ > + const struct ov5648_mode *mode; > + > + if (size_enum->index >= ARRAY_SIZE(ov5648_modes)) > + return -EINVAL; > + > + mode = &ov5648_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 ov5648_enum_frame_interval(struct v4l2_subdev *subdev, > + struct v4l2_subdev_pad_config *config, > + struct v4l2_subdev_frame_interval_enum > *interval_enum) > +{ > + const struct ov5648_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(ov5648_modes); mode_index++) { > + mode = &ov5648_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(ov5648_modes) || !mode) > + return -EINVAL; > + > + switch (interval_enum->code) { > + case MEDIA_BUS_FMT_SBGGR8_1X8: > + interval_enum->interval = mode->frame_interval[0]; > + break; > + case MEDIA_BUS_FMT_SBGGR10_1X10: > + interval_enum->interval = mode->frame_interval[1]; > + break; > + default: > + return -EINVAL; > + } > + > + return 0; > +} > + > +static const struct v4l2_subdev_pad_ops ov5648_subdev_pad_ops = { > + .enum_mbus_code = ov5648_enum_mbus_code, > + .get_fmt = ov5648_get_fmt, > + .set_fmt = ov5648_set_fmt, > + .enum_frame_size = ov5648_enum_frame_size, > + .enum_frame_interval = ov5648_enum_frame_interval, > +}; > + > +static const struct v4l2_subdev_ops ov5648_subdev_ops = { > + .video = &ov5648_subdev_video_ops, > + .pad = &ov5648_subdev_pad_ops, > +}; > + > +static int __maybe_unused ov5648_suspend(struct device *dev) > +{ > + struct i2c_client *client = to_i2c_client(dev); > + struct v4l2_subdev *subdev = i2c_get_clientdata(client); > + struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); > + struct ov5648_state *state = &sensor->state; > + int ret = 0; > + > + mutex_lock(&sensor->mutex); > + > + if (state->streaming) { > + ret = ov5648_sw_standby(sensor, true); > + if (ret) > + goto complete; > + } > + > + ret = ov5648_sensor_power(sensor, false); > + if (ret) { > + ov5648_sw_standby(sensor, false); > + goto complete; > + } > + > +complete: > + mutex_unlock(&sensor->mutex); > + > + return ret; > +} > + > +static int __maybe_unused ov5648_resume(struct device *dev) > +{ > + struct i2c_client *client = to_i2c_client(dev); > + struct v4l2_subdev *subdev = i2c_get_clientdata(client); > + struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); > + struct ov5648_state *state = &sensor->state; > + int ret = 0; > + > + mutex_lock(&sensor->mutex); > + > + ret = ov5648_sensor_power(sensor, true); > + if (ret) > + goto complete; > + > + ret = ov5648_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 = ov5648_sw_standby(sensor, false); > + if (ret) > + goto error_power; > + } > + > + goto complete; > + > +error_power: > + ov5648_sensor_power(sensor, false); > + > +complete: > + mutex_unlock(&sensor->mutex); > + > + return ret; > +} > + > +static int ov5648_probe(struct i2c_client *client) > +{ > + struct device *dev = &client->dev; > + struct fwnode_handle *handle; > + struct ov5648_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_optional(dev, "avdd"); > + if (IS_ERR(sensor->avdd)) { > + dev_info(dev, "no AVDD regulator provided, using internal\n"); > + sensor->avdd = NULL; > + } > + > + /* External Clock */ > + > + sensor->xvclk = devm_clk_get(dev, NULL); > + if (IS_ERR(sensor->xvclk)) { > + dev_err(dev, "failed to get external clock\n"); > + ret = PTR_ERR(sensor->xvclk); > + goto error_endpoint; > + } > + > + rate = clk_get_rate(sensor->xvclk); > + if (rate != OV5648_XVCLK_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, &ov5648_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 = ov5648_ctrls_init(sensor); > + if (ret) > + goto error_mutex; > + > + ret = ov5648_state_init(sensor); > + if (ret) > + goto error_ctrls; > + > + /* V4L2 subdev register */ > + > + ret = v4l2_async_register_subdev_sensor_common(subdev); > + if (ret) > + goto error_ctrls; > + > + /* Runtime PM */ > + > + pm_runtime_enable(sensor->dev); > + pm_runtime_set_suspended(sensor->dev); > + > + return 0; > + > +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 ov5648_remove(struct i2c_client *client) > +{ > + struct v4l2_subdev *subdev = i2c_get_clientdata(client); > + struct ov5648_sensor *sensor = ov5648_subdev_sensor(subdev); > + > + clk_rate_exclusive_put(sensor->xvclk); This seems to be extra now. > + > + v4l2_async_unregister_subdev(subdev); > + mutex_destroy(&sensor->mutex); > + media_entity_cleanup(&subdev->entity); > + v4l2_device_unregister_subdev(subdev); > + pm_runtime_disable(sensor->dev); > + > + ov5648_sensor_power(sensor, false); > + > + return 0; > +} > + > +static const struct dev_pm_ops ov5648_pm_ops = { > + SET_RUNTIME_PM_OPS(ov5648_suspend, ov5648_resume, NULL) > +}; > + > +static const struct of_device_id ov5648_of_match[] = { > + { .compatible = "ovti,ov5648" }, > + { } > +}; > +MODULE_DEVICE_TABLE(of, ov5648_of_match); > + > +static struct i2c_driver ov5648_driver = { > + .driver = { > + .name = "ov5648", > + .of_match_table = ov5648_of_match, > + .pm = &ov5648_pm_ops, > + }, > + .probe_new = ov5648_probe, > + .remove = ov5648_remove, > +}; > + > +module_i2c_driver(ov5648_driver); > + > +MODULE_AUTHOR("Paul Kocialkowski <[email protected]>"); > +MODULE_DESCRIPTION("V4L2 driver for the OmniVision OV5648 image sensor"); > +MODULE_LICENSE("GPL v2"); -- Kind regards, Sakari Ailus
