1272 строки
28 KiB
C
1272 строки
28 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Sony imx412 Camera Sensor Driver
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*
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* Copyright (C) 2021 Intel Corporation
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*/
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#include <asm/unaligned.h>
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/module.h>
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#include <linux/pm_runtime.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-fwnode.h>
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#include <media/v4l2-subdev.h>
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/* Streaming Mode */
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#define IMX412_REG_MODE_SELECT 0x0100
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#define IMX412_MODE_STANDBY 0x00
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#define IMX412_MODE_STREAMING 0x01
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/* Lines per frame */
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#define IMX412_REG_LPFR 0x0340
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/* Chip ID */
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#define IMX412_REG_ID 0x0016
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#define IMX412_ID 0x577
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/* Exposure control */
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#define IMX412_REG_EXPOSURE_CIT 0x0202
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#define IMX412_EXPOSURE_MIN 8
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#define IMX412_EXPOSURE_OFFSET 22
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#define IMX412_EXPOSURE_STEP 1
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#define IMX412_EXPOSURE_DEFAULT 0x0648
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/* Analog gain control */
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#define IMX412_REG_AGAIN 0x0204
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#define IMX412_AGAIN_MIN 0
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#define IMX412_AGAIN_MAX 978
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#define IMX412_AGAIN_STEP 1
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#define IMX412_AGAIN_DEFAULT 0
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/* Group hold register */
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#define IMX412_REG_HOLD 0x0104
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/* Input clock rate */
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#define IMX412_INCLK_RATE 24000000
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/* CSI2 HW configuration */
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#define IMX412_LINK_FREQ 600000000
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#define IMX412_NUM_DATA_LANES 4
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#define IMX412_REG_MIN 0x00
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#define IMX412_REG_MAX 0xffff
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/**
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* struct imx412_reg - imx412 sensor register
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* @address: Register address
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* @val: Register value
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*/
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struct imx412_reg {
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u16 address;
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u8 val;
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};
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/**
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* struct imx412_reg_list - imx412 sensor register list
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* @num_of_regs: Number of registers in the list
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* @regs: Pointer to register list
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*/
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struct imx412_reg_list {
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u32 num_of_regs;
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const struct imx412_reg *regs;
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};
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/**
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* struct imx412_mode - imx412 sensor mode structure
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* @width: Frame width
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* @height: Frame height
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* @code: Format code
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* @hblank: Horizontal blanking in lines
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* @vblank: Vertical blanking in lines
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* @vblank_min: Minimum vertical blanking in lines
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* @vblank_max: Maximum vertical blanking in lines
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* @pclk: Sensor pixel clock
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* @link_freq_idx: Link frequency index
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* @reg_list: Register list for sensor mode
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*/
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struct imx412_mode {
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u32 width;
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u32 height;
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u32 code;
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u32 hblank;
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u32 vblank;
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u32 vblank_min;
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u32 vblank_max;
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u64 pclk;
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u32 link_freq_idx;
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struct imx412_reg_list reg_list;
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};
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/**
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* struct imx412 - imx412 sensor device structure
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* @dev: Pointer to generic device
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* @client: Pointer to i2c client
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* @sd: V4L2 sub-device
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* @pad: Media pad. Only one pad supported
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* @reset_gpio: Sensor reset gpio
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* @inclk: Sensor input clock
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* @ctrl_handler: V4L2 control handler
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* @link_freq_ctrl: Pointer to link frequency control
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* @pclk_ctrl: Pointer to pixel clock control
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* @hblank_ctrl: Pointer to horizontal blanking control
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* @vblank_ctrl: Pointer to vertical blanking control
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* @exp_ctrl: Pointer to exposure control
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* @again_ctrl: Pointer to analog gain control
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* @vblank: Vertical blanking in lines
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* @cur_mode: Pointer to current selected sensor mode
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* @mutex: Mutex for serializing sensor controls
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* @streaming: Flag indicating streaming state
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*/
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struct imx412 {
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struct device *dev;
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struct i2c_client *client;
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struct v4l2_subdev sd;
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struct media_pad pad;
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struct gpio_desc *reset_gpio;
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struct clk *inclk;
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struct v4l2_ctrl_handler ctrl_handler;
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struct v4l2_ctrl *link_freq_ctrl;
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struct v4l2_ctrl *pclk_ctrl;
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struct v4l2_ctrl *hblank_ctrl;
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struct v4l2_ctrl *vblank_ctrl;
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struct {
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struct v4l2_ctrl *exp_ctrl;
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struct v4l2_ctrl *again_ctrl;
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};
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u32 vblank;
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const struct imx412_mode *cur_mode;
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struct mutex mutex;
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bool streaming;
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};
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static const s64 link_freq[] = {
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IMX412_LINK_FREQ,
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};
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/* Sensor mode registers */
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static const struct imx412_reg mode_4056x3040_regs[] = {
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{0x0136, 0x18},
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{0x0137, 0x00},
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{0x3c7e, 0x08},
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{0x3c7f, 0x02},
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{0x38a8, 0x1f},
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{0x38a9, 0xff},
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{0x38aa, 0x1f},
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{0x38ab, 0xff},
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{0x55d4, 0x00},
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{0x55d5, 0x00},
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{0x55d6, 0x07},
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{0x55d7, 0xff},
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{0x55e8, 0x07},
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{0x55e9, 0xff},
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{0x55ea, 0x00},
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{0x55eb, 0x00},
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{0x575c, 0x07},
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{0x575d, 0xff},
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{0x575e, 0x00},
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{0x575f, 0x00},
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{0x5764, 0x00},
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{0x5765, 0x00},
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{0x5766, 0x07},
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{0x5767, 0xff},
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{0x5974, 0x04},
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{0x5975, 0x01},
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{0x5f10, 0x09},
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{0x5f11, 0x92},
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{0x5f12, 0x32},
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{0x5f13, 0x72},
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{0x5f14, 0x16},
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{0x5f15, 0xba},
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{0x5f17, 0x13},
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{0x5f18, 0x24},
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{0x5f19, 0x60},
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{0x5f1a, 0xe3},
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{0x5f1b, 0xad},
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{0x5f1c, 0x74},
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{0x5f2d, 0x25},
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{0x5f5c, 0xd0},
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{0x6a22, 0x00},
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{0x6a23, 0x1d},
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{0x7ba8, 0x00},
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{0x7ba9, 0x00},
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{0x886b, 0x00},
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{0x9002, 0x0a},
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{0x9004, 0x1a},
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{0x9214, 0x93},
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{0x9215, 0x69},
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{0x9216, 0x93},
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{0x9217, 0x6b},
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{0x9218, 0x93},
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{0x9219, 0x6d},
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{0x921a, 0x57},
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{0x921b, 0x58},
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{0x921c, 0x57},
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{0x921d, 0x59},
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{0x921e, 0x57},
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{0x921f, 0x5a},
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{0x9220, 0x57},
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{0x9221, 0x5b},
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{0x9222, 0x93},
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{0x9223, 0x02},
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{0x9224, 0x93},
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{0x9225, 0x03},
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{0x9226, 0x93},
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{0x9227, 0x04},
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{0x9228, 0x93},
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{0x9229, 0x05},
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{0x922a, 0x98},
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{0x922b, 0x21},
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{0x922c, 0xb2},
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{0x922d, 0xdb},
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{0x922e, 0xb2},
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{0x922f, 0xdc},
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{0x9230, 0xb2},
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{0x9231, 0xdd},
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{0x9232, 0xe2},
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{0x9233, 0xe1},
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{0x9234, 0xb2},
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{0x9235, 0xe2},
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{0x9236, 0xb2},
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{0x9237, 0xe3},
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{0x9238, 0xb7},
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{0x9239, 0xb9},
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{0x923a, 0xb7},
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{0x923b, 0xbb},
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{0x923c, 0xb7},
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{0x923d, 0xbc},
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{0x923e, 0xb7},
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{0x923f, 0xc5},
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{0x9240, 0xb7},
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{0x9241, 0xc7},
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{0x9242, 0xb7},
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{0x9243, 0xc9},
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{0x9244, 0x98},
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{0x9245, 0x56},
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{0x9246, 0x98},
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{0x9247, 0x55},
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{0x9380, 0x00},
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{0x9381, 0x62},
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{0x9382, 0x00},
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{0x9383, 0x56},
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{0x9384, 0x00},
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{0x9385, 0x52},
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{0x9388, 0x00},
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{0x9389, 0x55},
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{0x938a, 0x00},
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{0x938b, 0x55},
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{0x938c, 0x00},
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{0x938d, 0x41},
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{0x5078, 0x01},
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{0x0112, 0x0a},
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{0x0113, 0x0a},
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{0x0114, 0x03},
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{0x0342, 0x11},
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{0x0343, 0xa0},
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{0x0340, 0x0d},
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{0x0341, 0xda},
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{0x3210, 0x00},
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{0x0344, 0x00},
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{0x0345, 0x00},
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{0x0346, 0x00},
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{0x0347, 0x00},
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{0x0348, 0x0f},
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{0x0349, 0xd7},
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{0x034a, 0x0b},
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{0x034b, 0xdf},
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{0x00e3, 0x00},
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{0x00e4, 0x00},
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{0x00e5, 0x01},
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{0x00fc, 0x0a},
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{0x00fd, 0x0a},
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{0x00fe, 0x0a},
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{0x00ff, 0x0a},
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{0xe013, 0x00},
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{0x0220, 0x00},
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{0x0221, 0x11},
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{0x0381, 0x01},
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{0x0383, 0x01},
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{0x0385, 0x01},
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{0x0387, 0x01},
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{0x0900, 0x00},
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{0x0901, 0x11},
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{0x0902, 0x00},
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{0x3140, 0x02},
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{0x3241, 0x11},
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{0x3250, 0x03},
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{0x3e10, 0x00},
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{0x3e11, 0x00},
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{0x3f0d, 0x00},
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{0x3f42, 0x00},
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{0x3f43, 0x00},
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{0x0401, 0x00},
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{0x0404, 0x00},
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{0x0405, 0x10},
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{0x0408, 0x00},
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{0x0409, 0x00},
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{0x040a, 0x00},
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{0x040b, 0x00},
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{0x040c, 0x0f},
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{0x040d, 0xd8},
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{0x040e, 0x0b},
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{0x040f, 0xe0},
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{0x034c, 0x0f},
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{0x034d, 0xd8},
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{0x034e, 0x0b},
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{0x034f, 0xe0},
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{0x0301, 0x05},
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{0x0303, 0x02},
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{0x0305, 0x04},
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{0x0306, 0x00},
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{0x0307, 0xc8},
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{0x0309, 0x0a},
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{0x030b, 0x01},
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{0x030d, 0x02},
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{0x030e, 0x01},
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{0x030f, 0x5e},
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{0x0310, 0x00},
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{0x0820, 0x12},
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{0x0821, 0xc0},
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{0x0822, 0x00},
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{0x0823, 0x00},
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{0x3e20, 0x01},
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{0x3e37, 0x00},
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{0x3f50, 0x00},
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{0x3f56, 0x00},
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{0x3f57, 0xe2},
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{0x3c0a, 0x5a},
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{0x3c0b, 0x55},
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{0x3c0c, 0x28},
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{0x3c0d, 0x07},
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{0x3c0e, 0xff},
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{0x3c0f, 0x00},
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{0x3c10, 0x00},
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{0x3c11, 0x02},
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{0x3c12, 0x00},
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{0x3c13, 0x03},
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{0x3c14, 0x00},
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{0x3c15, 0x00},
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{0x3c16, 0x0c},
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{0x3c17, 0x0c},
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{0x3c18, 0x0c},
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{0x3c19, 0x0a},
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{0x3c1a, 0x0a},
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{0x3c1b, 0x0a},
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{0x3c1c, 0x00},
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{0x3c1d, 0x00},
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{0x3c1e, 0x00},
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{0x3c1f, 0x00},
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{0x3c20, 0x00},
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{0x3c21, 0x00},
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{0x3c22, 0x3f},
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{0x3c23, 0x0a},
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{0x3e35, 0x01},
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{0x3f4a, 0x03},
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{0x3f4b, 0xbf},
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{0x3f26, 0x00},
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{0x0202, 0x0d},
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{0x0203, 0xc4},
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{0x0204, 0x00},
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{0x0205, 0x00},
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{0x020e, 0x01},
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{0x020f, 0x00},
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{0x0210, 0x01},
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{0x0211, 0x00},
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{0x0212, 0x01},
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{0x0213, 0x00},
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{0x0214, 0x01},
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{0x0215, 0x00},
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{0xbcf1, 0x00},
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};
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/* Supported sensor mode configurations */
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static const struct imx412_mode supported_mode = {
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.width = 4056,
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.height = 3040,
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.hblank = 456,
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.vblank = 506,
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.vblank_min = 506,
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.vblank_max = 32420,
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.pclk = 480000000,
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.link_freq_idx = 0,
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.code = MEDIA_BUS_FMT_SRGGB10_1X10,
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.reg_list = {
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.num_of_regs = ARRAY_SIZE(mode_4056x3040_regs),
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.regs = mode_4056x3040_regs,
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},
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};
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/**
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* to_imx412() - imx412 V4L2 sub-device to imx412 device.
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* @subdev: pointer to imx412 V4L2 sub-device
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*
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* Return: pointer to imx412 device
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*/
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static inline struct imx412 *to_imx412(struct v4l2_subdev *subdev)
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{
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return container_of(subdev, struct imx412, sd);
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}
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/**
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* imx412_read_reg() - Read registers.
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* @imx412: pointer to imx412 device
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* @reg: register address
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* @len: length of bytes to read. Max supported bytes is 4
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* @val: pointer to register value to be filled.
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*
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* Return: 0 if successful, error code otherwise.
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*/
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static int imx412_read_reg(struct imx412 *imx412, u16 reg, u32 len, u32 *val)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&imx412->sd);
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struct i2c_msg msgs[2] = {0};
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u8 addr_buf[2] = {0};
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u8 data_buf[4] = {0};
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int ret;
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if (WARN_ON(len > 4))
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return -EINVAL;
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put_unaligned_be16(reg, addr_buf);
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/* Write register address */
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msgs[0].addr = client->addr;
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msgs[0].flags = 0;
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msgs[0].len = ARRAY_SIZE(addr_buf);
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msgs[0].buf = addr_buf;
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/* Read data from register */
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msgs[1].addr = client->addr;
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msgs[1].flags = I2C_M_RD;
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msgs[1].len = len;
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msgs[1].buf = &data_buf[4 - len];
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ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
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if (ret != ARRAY_SIZE(msgs))
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return -EIO;
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*val = get_unaligned_be32(data_buf);
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return 0;
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}
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/**
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* imx412_write_reg() - Write register
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* @imx412: pointer to imx412 device
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* @reg: register address
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* @len: length of bytes. Max supported bytes is 4
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* @val: register value
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*
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* Return: 0 if successful, error code otherwise.
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*/
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static int imx412_write_reg(struct imx412 *imx412, u16 reg, u32 len, u32 val)
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{
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struct i2c_client *client = v4l2_get_subdevdata(&imx412->sd);
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u8 buf[6] = {0};
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if (WARN_ON(len > 4))
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return -EINVAL;
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put_unaligned_be16(reg, buf);
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put_unaligned_be32(val << (8 * (4 - len)), buf + 2);
|
|
if (i2c_master_send(client, buf, len + 2) != len + 2)
|
|
return -EIO;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx412_write_regs() - Write a list of registers
|
|
* @imx412: pointer to imx412 device
|
|
* @regs: list of registers to be written
|
|
* @len: length of registers array
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_write_regs(struct imx412 *imx412,
|
|
const struct imx412_reg *regs, u32 len)
|
|
{
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
for (i = 0; i < len; i++) {
|
|
ret = imx412_write_reg(imx412, regs[i].address, 1, regs[i].val);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx412_update_controls() - Update control ranges based on streaming mode
|
|
* @imx412: pointer to imx412 device
|
|
* @mode: pointer to imx412_mode sensor mode
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_update_controls(struct imx412 *imx412,
|
|
const struct imx412_mode *mode)
|
|
{
|
|
int ret;
|
|
|
|
ret = __v4l2_ctrl_s_ctrl(imx412->link_freq_ctrl, mode->link_freq_idx);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = __v4l2_ctrl_s_ctrl(imx412->hblank_ctrl, mode->hblank);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return __v4l2_ctrl_modify_range(imx412->vblank_ctrl, mode->vblank_min,
|
|
mode->vblank_max, 1, mode->vblank);
|
|
}
|
|
|
|
/**
|
|
* imx412_update_exp_gain() - Set updated exposure and gain
|
|
* @imx412: pointer to imx412 device
|
|
* @exposure: updated exposure value
|
|
* @gain: updated analog gain value
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_update_exp_gain(struct imx412 *imx412, u32 exposure, u32 gain)
|
|
{
|
|
u32 lpfr;
|
|
int ret;
|
|
|
|
lpfr = imx412->vblank + imx412->cur_mode->height;
|
|
|
|
dev_dbg(imx412->dev, "Set exp %u, analog gain %u, lpfr %u",
|
|
exposure, gain, lpfr);
|
|
|
|
ret = imx412_write_reg(imx412, IMX412_REG_HOLD, 1, 1);
|
|
if (ret)
|
|
return ret;
|
|
|
|
ret = imx412_write_reg(imx412, IMX412_REG_LPFR, 2, lpfr);
|
|
if (ret)
|
|
goto error_release_group_hold;
|
|
|
|
ret = imx412_write_reg(imx412, IMX412_REG_EXPOSURE_CIT, 2, exposure);
|
|
if (ret)
|
|
goto error_release_group_hold;
|
|
|
|
ret = imx412_write_reg(imx412, IMX412_REG_AGAIN, 2, gain);
|
|
|
|
error_release_group_hold:
|
|
imx412_write_reg(imx412, IMX412_REG_HOLD, 1, 0);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* imx412_set_ctrl() - Set subdevice control
|
|
* @ctrl: pointer to v4l2_ctrl structure
|
|
*
|
|
* Supported controls:
|
|
* - V4L2_CID_VBLANK
|
|
* - cluster controls:
|
|
* - V4L2_CID_ANALOGUE_GAIN
|
|
* - V4L2_CID_EXPOSURE
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_set_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct imx412 *imx412 =
|
|
container_of(ctrl->handler, struct imx412, ctrl_handler);
|
|
u32 analog_gain;
|
|
u32 exposure;
|
|
int ret;
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_VBLANK:
|
|
imx412->vblank = imx412->vblank_ctrl->val;
|
|
|
|
dev_dbg(imx412->dev, "Received vblank %u, new lpfr %u",
|
|
imx412->vblank,
|
|
imx412->vblank + imx412->cur_mode->height);
|
|
|
|
ret = __v4l2_ctrl_modify_range(imx412->exp_ctrl,
|
|
IMX412_EXPOSURE_MIN,
|
|
imx412->vblank +
|
|
imx412->cur_mode->height -
|
|
IMX412_EXPOSURE_OFFSET,
|
|
1, IMX412_EXPOSURE_DEFAULT);
|
|
break;
|
|
case V4L2_CID_EXPOSURE:
|
|
/* Set controls only if sensor is in power on state */
|
|
if (!pm_runtime_get_if_in_use(imx412->dev))
|
|
return 0;
|
|
|
|
exposure = ctrl->val;
|
|
analog_gain = imx412->again_ctrl->val;
|
|
|
|
dev_dbg(imx412->dev, "Received exp %u, analog gain %u",
|
|
exposure, analog_gain);
|
|
|
|
ret = imx412_update_exp_gain(imx412, exposure, analog_gain);
|
|
|
|
pm_runtime_put(imx412->dev);
|
|
|
|
break;
|
|
default:
|
|
dev_err(imx412->dev, "Invalid control %d", ctrl->id);
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* V4l2 subdevice control ops*/
|
|
static const struct v4l2_ctrl_ops imx412_ctrl_ops = {
|
|
.s_ctrl = imx412_set_ctrl,
|
|
};
|
|
|
|
/**
|
|
* imx412_enum_mbus_code() - Enumerate V4L2 sub-device mbus codes
|
|
* @sd: pointer to imx412 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
* @code: V4L2 sub-device code enumeration need to be filled
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_enum_mbus_code(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
|
{
|
|
if (code->index > 0)
|
|
return -EINVAL;
|
|
|
|
code->code = supported_mode.code;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx412_enum_frame_size() - Enumerate V4L2 sub-device frame sizes
|
|
* @sd: pointer to imx412 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
* @fsize: V4L2 sub-device size enumeration need to be filled
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_enum_frame_size(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_frame_size_enum *fsize)
|
|
{
|
|
if (fsize->index > 0)
|
|
return -EINVAL;
|
|
|
|
if (fsize->code != supported_mode.code)
|
|
return -EINVAL;
|
|
|
|
fsize->min_width = supported_mode.width;
|
|
fsize->max_width = fsize->min_width;
|
|
fsize->min_height = supported_mode.height;
|
|
fsize->max_height = fsize->min_height;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx412_fill_pad_format() - Fill subdevice pad format
|
|
* from selected sensor mode
|
|
* @imx412: pointer to imx412 device
|
|
* @mode: pointer to imx412_mode sensor mode
|
|
* @fmt: V4L2 sub-device format need to be filled
|
|
*/
|
|
static void imx412_fill_pad_format(struct imx412 *imx412,
|
|
const struct imx412_mode *mode,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
fmt->format.width = mode->width;
|
|
fmt->format.height = mode->height;
|
|
fmt->format.code = mode->code;
|
|
fmt->format.field = V4L2_FIELD_NONE;
|
|
fmt->format.colorspace = V4L2_COLORSPACE_RAW;
|
|
fmt->format.ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
|
|
fmt->format.quantization = V4L2_QUANTIZATION_DEFAULT;
|
|
fmt->format.xfer_func = V4L2_XFER_FUNC_NONE;
|
|
}
|
|
|
|
/**
|
|
* imx412_get_pad_format() - Get subdevice pad format
|
|
* @sd: pointer to imx412 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
* @fmt: V4L2 sub-device format need to be set
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_get_pad_format(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct imx412 *imx412 = to_imx412(sd);
|
|
|
|
mutex_lock(&imx412->mutex);
|
|
|
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
struct v4l2_mbus_framefmt *framefmt;
|
|
|
|
framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
|
|
fmt->format = *framefmt;
|
|
} else {
|
|
imx412_fill_pad_format(imx412, imx412->cur_mode, fmt);
|
|
}
|
|
|
|
mutex_unlock(&imx412->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx412_set_pad_format() - Set subdevice pad format
|
|
* @sd: pointer to imx412 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
* @fmt: V4L2 sub-device format need to be set
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_set_pad_format(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct imx412 *imx412 = to_imx412(sd);
|
|
const struct imx412_mode *mode;
|
|
int ret = 0;
|
|
|
|
mutex_lock(&imx412->mutex);
|
|
|
|
mode = &supported_mode;
|
|
imx412_fill_pad_format(imx412, mode, fmt);
|
|
|
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
struct v4l2_mbus_framefmt *framefmt;
|
|
|
|
framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
|
|
*framefmt = fmt->format;
|
|
} else {
|
|
ret = imx412_update_controls(imx412, mode);
|
|
if (!ret)
|
|
imx412->cur_mode = mode;
|
|
}
|
|
|
|
mutex_unlock(&imx412->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* imx412_init_pad_cfg() - Initialize sub-device pad configuration
|
|
* @sd: pointer to imx412 V4L2 sub-device structure
|
|
* @sd_state: V4L2 sub-device configuration
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_init_pad_cfg(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_state *sd_state)
|
|
{
|
|
struct imx412 *imx412 = to_imx412(sd);
|
|
struct v4l2_subdev_format fmt = { 0 };
|
|
|
|
fmt.which = sd_state ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
|
|
imx412_fill_pad_format(imx412, &supported_mode, &fmt);
|
|
|
|
return imx412_set_pad_format(sd, sd_state, &fmt);
|
|
}
|
|
|
|
/**
|
|
* imx412_start_streaming() - Start sensor stream
|
|
* @imx412: pointer to imx412 device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_start_streaming(struct imx412 *imx412)
|
|
{
|
|
const struct imx412_reg_list *reg_list;
|
|
int ret;
|
|
|
|
/* Write sensor mode registers */
|
|
reg_list = &imx412->cur_mode->reg_list;
|
|
ret = imx412_write_regs(imx412, reg_list->regs,
|
|
reg_list->num_of_regs);
|
|
if (ret) {
|
|
dev_err(imx412->dev, "fail to write initial registers");
|
|
return ret;
|
|
}
|
|
|
|
/* Setup handler will write actual exposure and gain */
|
|
ret = __v4l2_ctrl_handler_setup(imx412->sd.ctrl_handler);
|
|
if (ret) {
|
|
dev_err(imx412->dev, "fail to setup handler");
|
|
return ret;
|
|
}
|
|
|
|
/* Delay is required before streaming*/
|
|
usleep_range(7400, 8000);
|
|
|
|
/* Start streaming */
|
|
ret = imx412_write_reg(imx412, IMX412_REG_MODE_SELECT,
|
|
1, IMX412_MODE_STREAMING);
|
|
if (ret) {
|
|
dev_err(imx412->dev, "fail to start streaming");
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx412_stop_streaming() - Stop sensor stream
|
|
* @imx412: pointer to imx412 device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_stop_streaming(struct imx412 *imx412)
|
|
{
|
|
return imx412_write_reg(imx412, IMX412_REG_MODE_SELECT,
|
|
1, IMX412_MODE_STANDBY);
|
|
}
|
|
|
|
/**
|
|
* imx412_set_stream() - Enable sensor streaming
|
|
* @sd: pointer to imx412 subdevice
|
|
* @enable: set to enable sensor streaming
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_set_stream(struct v4l2_subdev *sd, int enable)
|
|
{
|
|
struct imx412 *imx412 = to_imx412(sd);
|
|
int ret;
|
|
|
|
mutex_lock(&imx412->mutex);
|
|
|
|
if (imx412->streaming == enable) {
|
|
mutex_unlock(&imx412->mutex);
|
|
return 0;
|
|
}
|
|
|
|
if (enable) {
|
|
ret = pm_runtime_resume_and_get(imx412->dev);
|
|
if (ret)
|
|
goto error_unlock;
|
|
|
|
ret = imx412_start_streaming(imx412);
|
|
if (ret)
|
|
goto error_power_off;
|
|
} else {
|
|
imx412_stop_streaming(imx412);
|
|
pm_runtime_put(imx412->dev);
|
|
}
|
|
|
|
imx412->streaming = enable;
|
|
|
|
mutex_unlock(&imx412->mutex);
|
|
|
|
return 0;
|
|
|
|
error_power_off:
|
|
pm_runtime_put(imx412->dev);
|
|
error_unlock:
|
|
mutex_unlock(&imx412->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* imx412_detect() - Detect imx412 sensor
|
|
* @imx412: pointer to imx412 device
|
|
*
|
|
* Return: 0 if successful, -EIO if sensor id does not match
|
|
*/
|
|
static int imx412_detect(struct imx412 *imx412)
|
|
{
|
|
int ret;
|
|
u32 val;
|
|
|
|
ret = imx412_read_reg(imx412, IMX412_REG_ID, 2, &val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (val != IMX412_ID) {
|
|
dev_err(imx412->dev, "chip id mismatch: %x!=%x",
|
|
IMX412_ID, val);
|
|
return -ENXIO;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx412_parse_hw_config() - Parse HW configuration and check if supported
|
|
* @imx412: pointer to imx412 device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_parse_hw_config(struct imx412 *imx412)
|
|
{
|
|
struct fwnode_handle *fwnode = dev_fwnode(imx412->dev);
|
|
struct v4l2_fwnode_endpoint bus_cfg = {
|
|
.bus_type = V4L2_MBUS_CSI2_DPHY
|
|
};
|
|
struct fwnode_handle *ep;
|
|
unsigned long rate;
|
|
unsigned int i;
|
|
int ret;
|
|
|
|
if (!fwnode)
|
|
return -ENXIO;
|
|
|
|
/* Request optional reset pin */
|
|
imx412->reset_gpio = devm_gpiod_get_optional(imx412->dev, "reset",
|
|
GPIOD_OUT_LOW);
|
|
if (IS_ERR(imx412->reset_gpio)) {
|
|
dev_err(imx412->dev, "failed to get reset gpio %ld",
|
|
PTR_ERR(imx412->reset_gpio));
|
|
return PTR_ERR(imx412->reset_gpio);
|
|
}
|
|
|
|
/* Get sensor input clock */
|
|
imx412->inclk = devm_clk_get(imx412->dev, NULL);
|
|
if (IS_ERR(imx412->inclk)) {
|
|
dev_err(imx412->dev, "could not get inclk");
|
|
return PTR_ERR(imx412->inclk);
|
|
}
|
|
|
|
rate = clk_get_rate(imx412->inclk);
|
|
if (rate != IMX412_INCLK_RATE) {
|
|
dev_err(imx412->dev, "inclk frequency mismatch");
|
|
return -EINVAL;
|
|
}
|
|
|
|
ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
|
|
if (!ep)
|
|
return -ENXIO;
|
|
|
|
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
|
|
fwnode_handle_put(ep);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (bus_cfg.bus.mipi_csi2.num_data_lanes != IMX412_NUM_DATA_LANES) {
|
|
dev_err(imx412->dev,
|
|
"number of CSI2 data lanes %d is not supported",
|
|
bus_cfg.bus.mipi_csi2.num_data_lanes);
|
|
ret = -EINVAL;
|
|
goto done_endpoint_free;
|
|
}
|
|
|
|
if (!bus_cfg.nr_of_link_frequencies) {
|
|
dev_err(imx412->dev, "no link frequencies defined");
|
|
ret = -EINVAL;
|
|
goto done_endpoint_free;
|
|
}
|
|
|
|
for (i = 0; i < bus_cfg.nr_of_link_frequencies; i++)
|
|
if (bus_cfg.link_frequencies[i] == IMX412_LINK_FREQ)
|
|
goto done_endpoint_free;
|
|
|
|
ret = -EINVAL;
|
|
|
|
done_endpoint_free:
|
|
v4l2_fwnode_endpoint_free(&bus_cfg);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* V4l2 subdevice ops */
|
|
static const struct v4l2_subdev_video_ops imx412_video_ops = {
|
|
.s_stream = imx412_set_stream,
|
|
};
|
|
|
|
static const struct v4l2_subdev_pad_ops imx412_pad_ops = {
|
|
.init_cfg = imx412_init_pad_cfg,
|
|
.enum_mbus_code = imx412_enum_mbus_code,
|
|
.enum_frame_size = imx412_enum_frame_size,
|
|
.get_fmt = imx412_get_pad_format,
|
|
.set_fmt = imx412_set_pad_format,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops imx412_subdev_ops = {
|
|
.video = &imx412_video_ops,
|
|
.pad = &imx412_pad_ops,
|
|
};
|
|
|
|
/**
|
|
* imx412_power_on() - Sensor power on sequence
|
|
* @dev: pointer to i2c device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_power_on(struct device *dev)
|
|
{
|
|
struct v4l2_subdev *sd = dev_get_drvdata(dev);
|
|
struct imx412 *imx412 = to_imx412(sd);
|
|
int ret;
|
|
|
|
gpiod_set_value_cansleep(imx412->reset_gpio, 0);
|
|
|
|
ret = clk_prepare_enable(imx412->inclk);
|
|
if (ret) {
|
|
dev_err(imx412->dev, "fail to enable inclk");
|
|
goto error_reset;
|
|
}
|
|
|
|
usleep_range(1000, 1200);
|
|
|
|
return 0;
|
|
|
|
error_reset:
|
|
gpiod_set_value_cansleep(imx412->reset_gpio, 1);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* imx412_power_off() - Sensor power off sequence
|
|
* @dev: pointer to i2c device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_power_off(struct device *dev)
|
|
{
|
|
struct v4l2_subdev *sd = dev_get_drvdata(dev);
|
|
struct imx412 *imx412 = to_imx412(sd);
|
|
|
|
clk_disable_unprepare(imx412->inclk);
|
|
|
|
gpiod_set_value_cansleep(imx412->reset_gpio, 1);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx412_init_controls() - Initialize sensor subdevice controls
|
|
* @imx412: pointer to imx412 device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_init_controls(struct imx412 *imx412)
|
|
{
|
|
struct v4l2_ctrl_handler *ctrl_hdlr = &imx412->ctrl_handler;
|
|
const struct imx412_mode *mode = imx412->cur_mode;
|
|
u32 lpfr;
|
|
int ret;
|
|
|
|
ret = v4l2_ctrl_handler_init(ctrl_hdlr, 6);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* Serialize controls with sensor device */
|
|
ctrl_hdlr->lock = &imx412->mutex;
|
|
|
|
/* Initialize exposure and gain */
|
|
lpfr = mode->vblank + mode->height;
|
|
imx412->exp_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
|
|
&imx412_ctrl_ops,
|
|
V4L2_CID_EXPOSURE,
|
|
IMX412_EXPOSURE_MIN,
|
|
lpfr - IMX412_EXPOSURE_OFFSET,
|
|
IMX412_EXPOSURE_STEP,
|
|
IMX412_EXPOSURE_DEFAULT);
|
|
|
|
imx412->again_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
|
|
&imx412_ctrl_ops,
|
|
V4L2_CID_ANALOGUE_GAIN,
|
|
IMX412_AGAIN_MIN,
|
|
IMX412_AGAIN_MAX,
|
|
IMX412_AGAIN_STEP,
|
|
IMX412_AGAIN_DEFAULT);
|
|
|
|
v4l2_ctrl_cluster(2, &imx412->exp_ctrl);
|
|
|
|
imx412->vblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
|
|
&imx412_ctrl_ops,
|
|
V4L2_CID_VBLANK,
|
|
mode->vblank_min,
|
|
mode->vblank_max,
|
|
1, mode->vblank);
|
|
|
|
/* Read only controls */
|
|
imx412->pclk_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
|
|
&imx412_ctrl_ops,
|
|
V4L2_CID_PIXEL_RATE,
|
|
mode->pclk, mode->pclk,
|
|
1, mode->pclk);
|
|
|
|
imx412->link_freq_ctrl = v4l2_ctrl_new_int_menu(ctrl_hdlr,
|
|
&imx412_ctrl_ops,
|
|
V4L2_CID_LINK_FREQ,
|
|
ARRAY_SIZE(link_freq) -
|
|
1,
|
|
mode->link_freq_idx,
|
|
link_freq);
|
|
if (imx412->link_freq_ctrl)
|
|
imx412->link_freq_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
|
|
imx412->hblank_ctrl = v4l2_ctrl_new_std(ctrl_hdlr,
|
|
&imx412_ctrl_ops,
|
|
V4L2_CID_HBLANK,
|
|
IMX412_REG_MIN,
|
|
IMX412_REG_MAX,
|
|
1, mode->hblank);
|
|
if (imx412->hblank_ctrl)
|
|
imx412->hblank_ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
|
|
|
|
if (ctrl_hdlr->error) {
|
|
dev_err(imx412->dev, "control init failed: %d",
|
|
ctrl_hdlr->error);
|
|
v4l2_ctrl_handler_free(ctrl_hdlr);
|
|
return ctrl_hdlr->error;
|
|
}
|
|
|
|
imx412->sd.ctrl_handler = ctrl_hdlr;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx412_probe() - I2C client device binding
|
|
* @client: pointer to i2c client device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_probe(struct i2c_client *client)
|
|
{
|
|
struct imx412 *imx412;
|
|
int ret;
|
|
|
|
imx412 = devm_kzalloc(&client->dev, sizeof(*imx412), GFP_KERNEL);
|
|
if (!imx412)
|
|
return -ENOMEM;
|
|
|
|
imx412->dev = &client->dev;
|
|
|
|
/* Initialize subdev */
|
|
v4l2_i2c_subdev_init(&imx412->sd, client, &imx412_subdev_ops);
|
|
|
|
ret = imx412_parse_hw_config(imx412);
|
|
if (ret) {
|
|
dev_err(imx412->dev, "HW configuration is not supported");
|
|
return ret;
|
|
}
|
|
|
|
mutex_init(&imx412->mutex);
|
|
|
|
ret = imx412_power_on(imx412->dev);
|
|
if (ret) {
|
|
dev_err(imx412->dev, "failed to power-on the sensor");
|
|
goto error_mutex_destroy;
|
|
}
|
|
|
|
/* Check module identity */
|
|
ret = imx412_detect(imx412);
|
|
if (ret) {
|
|
dev_err(imx412->dev, "failed to find sensor: %d", ret);
|
|
goto error_power_off;
|
|
}
|
|
|
|
/* Set default mode to max resolution */
|
|
imx412->cur_mode = &supported_mode;
|
|
imx412->vblank = imx412->cur_mode->vblank;
|
|
|
|
ret = imx412_init_controls(imx412);
|
|
if (ret) {
|
|
dev_err(imx412->dev, "failed to init controls: %d", ret);
|
|
goto error_power_off;
|
|
}
|
|
|
|
/* Initialize subdev */
|
|
imx412->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
|
imx412->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
|
|
|
|
/* Initialize source pad */
|
|
imx412->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
ret = media_entity_pads_init(&imx412->sd.entity, 1, &imx412->pad);
|
|
if (ret) {
|
|
dev_err(imx412->dev, "failed to init entity pads: %d", ret);
|
|
goto error_handler_free;
|
|
}
|
|
|
|
ret = v4l2_async_register_subdev_sensor(&imx412->sd);
|
|
if (ret < 0) {
|
|
dev_err(imx412->dev,
|
|
"failed to register async subdev: %d", ret);
|
|
goto error_media_entity;
|
|
}
|
|
|
|
pm_runtime_set_active(imx412->dev);
|
|
pm_runtime_enable(imx412->dev);
|
|
pm_runtime_idle(imx412->dev);
|
|
|
|
return 0;
|
|
|
|
error_media_entity:
|
|
media_entity_cleanup(&imx412->sd.entity);
|
|
error_handler_free:
|
|
v4l2_ctrl_handler_free(imx412->sd.ctrl_handler);
|
|
error_power_off:
|
|
imx412_power_off(imx412->dev);
|
|
error_mutex_destroy:
|
|
mutex_destroy(&imx412->mutex);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* imx412_remove() - I2C client device unbinding
|
|
* @client: pointer to I2C client device
|
|
*
|
|
* Return: 0 if successful, error code otherwise.
|
|
*/
|
|
static int imx412_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct imx412 *imx412 = to_imx412(sd);
|
|
|
|
v4l2_async_unregister_subdev(sd);
|
|
media_entity_cleanup(&sd->entity);
|
|
v4l2_ctrl_handler_free(sd->ctrl_handler);
|
|
|
|
pm_runtime_disable(&client->dev);
|
|
if (!pm_runtime_status_suspended(&client->dev))
|
|
imx412_power_off(&client->dev);
|
|
pm_runtime_set_suspended(&client->dev);
|
|
|
|
mutex_destroy(&imx412->mutex);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops imx412_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(imx412_power_off, imx412_power_on, NULL)
|
|
};
|
|
|
|
static const struct of_device_id imx412_of_match[] = {
|
|
{ .compatible = "sony,imx412" },
|
|
{ }
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(of, imx412_of_match);
|
|
|
|
static struct i2c_driver imx412_driver = {
|
|
.probe_new = imx412_probe,
|
|
.remove = imx412_remove,
|
|
.driver = {
|
|
.name = "imx412",
|
|
.pm = &imx412_pm_ops,
|
|
.of_match_table = imx412_of_match,
|
|
},
|
|
};
|
|
|
|
module_i2c_driver(imx412_driver);
|
|
|
|
MODULE_DESCRIPTION("Sony imx412 sensor driver");
|
|
MODULE_LICENSE("GPL");
|