![Luca Ceresoli](/assets/img/avatar_default.png)
v4l2_ctrl_handler_init() expects a hint of how many controls this handler is expected to refer to. Since this number here is always 4, let's pass exactly 4. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
2015 lines
48 KiB
C
2015 lines
48 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* imx274.c - IMX274 CMOS Image Sensor driver
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*
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* Copyright (C) 2017, Leopard Imaging, Inc.
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*
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* Leon Luo <leonl@leopardimaging.com>
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* Edwin Zou <edwinz@leopardimaging.com>
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* Luca Ceresoli <luca@lucaceresoli.net>
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*/
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#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/gpio.h>
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#include <linux/gpio/consumer.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of_gpio.h>
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#include <linux/regmap.h>
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#include <linux/slab.h>
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#include <linux/v4l2-mediabus.h>
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#include <linux/videodev2.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-subdev.h>
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/*
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* See "SHR, SVR Setting" in datasheet
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*/
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#define IMX274_DEFAULT_FRAME_LENGTH (4550)
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#define IMX274_MAX_FRAME_LENGTH (0x000fffff)
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/*
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* See "Frame Rate Adjustment" in datasheet
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*/
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#define IMX274_PIXCLK_CONST1 (72000000)
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#define IMX274_PIXCLK_CONST2 (1000000)
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/*
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* The input gain is shifted by IMX274_GAIN_SHIFT to get
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* decimal number. The real gain is
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* (float)input_gain_value / (1 << IMX274_GAIN_SHIFT)
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*/
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#define IMX274_GAIN_SHIFT (8)
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#define IMX274_GAIN_SHIFT_MASK ((1 << IMX274_GAIN_SHIFT) - 1)
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/*
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* See "Analog Gain" and "Digital Gain" in datasheet
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* min gain is 1X
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* max gain is calculated based on IMX274_GAIN_REG_MAX
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*/
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#define IMX274_GAIN_REG_MAX (1957)
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#define IMX274_MIN_GAIN (0x01 << IMX274_GAIN_SHIFT)
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#define IMX274_MAX_ANALOG_GAIN ((2048 << IMX274_GAIN_SHIFT)\
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/ (2048 - IMX274_GAIN_REG_MAX))
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#define IMX274_MAX_DIGITAL_GAIN (8)
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#define IMX274_DEF_GAIN (20 << IMX274_GAIN_SHIFT)
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#define IMX274_GAIN_CONST (2048) /* for gain formula */
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/*
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* 1 line time in us = (HMAX / 72), minimal is 4 lines
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*/
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#define IMX274_MIN_EXPOSURE_TIME (4 * 260 / 72)
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#define IMX274_DEFAULT_BINNING IMX274_BINNING_OFF
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#define IMX274_MAX_WIDTH (3840)
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#define IMX274_MAX_HEIGHT (2160)
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#define IMX274_MAX_FRAME_RATE (120)
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#define IMX274_MIN_FRAME_RATE (5)
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#define IMX274_DEF_FRAME_RATE (60)
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/*
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* register SHR is limited to (SVR value + 1) x VMAX value - 4
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*/
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#define IMX274_SHR_LIMIT_CONST (4)
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/*
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* Min and max sensor reset delay (microseconds)
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*/
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#define IMX274_RESET_DELAY1 (2000)
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#define IMX274_RESET_DELAY2 (2200)
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/*
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* shift and mask constants
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*/
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#define IMX274_SHIFT_8_BITS (8)
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#define IMX274_SHIFT_16_BITS (16)
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#define IMX274_MASK_LSB_2_BITS (0x03)
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#define IMX274_MASK_LSB_3_BITS (0x07)
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#define IMX274_MASK_LSB_4_BITS (0x0f)
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#define IMX274_MASK_LSB_8_BITS (0x00ff)
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#define DRIVER_NAME "IMX274"
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/*
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* IMX274 register definitions
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*/
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#define IMX274_SHR_REG_MSB 0x300D /* SHR */
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#define IMX274_SHR_REG_LSB 0x300C /* SHR */
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#define IMX274_SVR_REG_MSB 0x300F /* SVR */
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#define IMX274_SVR_REG_LSB 0x300E /* SVR */
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#define IMX274_HTRIM_EN_REG 0x3037
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#define IMX274_HTRIM_START_REG_LSB 0x3038
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#define IMX274_HTRIM_START_REG_MSB 0x3039
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#define IMX274_HTRIM_END_REG_LSB 0x303A
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#define IMX274_HTRIM_END_REG_MSB 0x303B
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#define IMX274_VWIDCUTEN_REG 0x30DD
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#define IMX274_VWIDCUT_REG_LSB 0x30DE
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#define IMX274_VWIDCUT_REG_MSB 0x30DF
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#define IMX274_VWINPOS_REG_LSB 0x30E0
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#define IMX274_VWINPOS_REG_MSB 0x30E1
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#define IMX274_WRITE_VSIZE_REG_LSB 0x3130
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#define IMX274_WRITE_VSIZE_REG_MSB 0x3131
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#define IMX274_Y_OUT_SIZE_REG_LSB 0x3132
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#define IMX274_Y_OUT_SIZE_REG_MSB 0x3133
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#define IMX274_VMAX_REG_1 0x30FA /* VMAX, MSB */
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#define IMX274_VMAX_REG_2 0x30F9 /* VMAX */
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#define IMX274_VMAX_REG_3 0x30F8 /* VMAX, LSB */
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#define IMX274_HMAX_REG_MSB 0x30F7 /* HMAX */
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#define IMX274_HMAX_REG_LSB 0x30F6 /* HMAX */
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#define IMX274_ANALOG_GAIN_ADDR_LSB 0x300A /* ANALOG GAIN LSB */
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#define IMX274_ANALOG_GAIN_ADDR_MSB 0x300B /* ANALOG GAIN MSB */
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#define IMX274_DIGITAL_GAIN_REG 0x3012 /* Digital Gain */
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#define IMX274_VFLIP_REG 0x301A /* VERTICAL FLIP */
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#define IMX274_TEST_PATTERN_REG 0x303D /* TEST PATTERN */
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#define IMX274_STANDBY_REG 0x3000 /* STANDBY */
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#define IMX274_TABLE_WAIT_MS 0
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#define IMX274_TABLE_END 1
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/*
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* imx274 I2C operation related structure
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*/
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struct reg_8 {
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u16 addr;
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u8 val;
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};
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static const struct regmap_config imx274_regmap_config = {
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.reg_bits = 16,
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.val_bits = 8,
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.cache_type = REGCACHE_RBTREE,
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};
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enum imx274_binning {
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IMX274_BINNING_OFF,
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IMX274_BINNING_2_1,
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IMX274_BINNING_3_1,
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};
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/*
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* Parameters for each imx274 readout mode.
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*
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* These are the values to configure the sensor in one of the
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* implemented modes.
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*
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* @init_regs: registers to initialize the mode
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* @bin_ratio: downscale factor (e.g. 3 for 3:1 binning)
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* @min_frame_len: Minimum frame length for each mode (see "Frame Rate
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* Adjustment (CSI-2)" in the datasheet)
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* @min_SHR: Minimum SHR register value (see "Shutter Setting (CSI-2)" in the
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* datasheet)
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* @max_fps: Maximum frames per second
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* @nocpiop: Number of clocks per internal offset period (see "Integration Time
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* in Each Readout Drive Mode (CSI-2)" in the datasheet)
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*/
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struct imx274_mode {
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const struct reg_8 *init_regs;
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unsigned int bin_ratio;
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int min_frame_len;
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int min_SHR;
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int max_fps;
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int nocpiop;
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};
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/*
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* imx274 test pattern related structure
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*/
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enum {
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TEST_PATTERN_DISABLED = 0,
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TEST_PATTERN_ALL_000H,
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TEST_PATTERN_ALL_FFFH,
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TEST_PATTERN_ALL_555H,
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TEST_PATTERN_ALL_AAAH,
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TEST_PATTERN_VSP_5AH, /* VERTICAL STRIPE PATTERN 555H/AAAH */
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TEST_PATTERN_VSP_A5H, /* VERTICAL STRIPE PATTERN AAAH/555H */
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TEST_PATTERN_VSP_05H, /* VERTICAL STRIPE PATTERN 000H/555H */
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TEST_PATTERN_VSP_50H, /* VERTICAL STRIPE PATTERN 555H/000H */
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TEST_PATTERN_VSP_0FH, /* VERTICAL STRIPE PATTERN 000H/FFFH */
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TEST_PATTERN_VSP_F0H, /* VERTICAL STRIPE PATTERN FFFH/000H */
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TEST_PATTERN_H_COLOR_BARS,
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TEST_PATTERN_V_COLOR_BARS,
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};
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static const char * const tp_qmenu[] = {
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"Disabled",
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"All 000h Pattern",
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"All FFFh Pattern",
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"All 555h Pattern",
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"All AAAh Pattern",
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"Vertical Stripe (555h / AAAh)",
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"Vertical Stripe (AAAh / 555h)",
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"Vertical Stripe (000h / 555h)",
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"Vertical Stripe (555h / 000h)",
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"Vertical Stripe (000h / FFFh)",
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"Vertical Stripe (FFFh / 000h)",
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"Horizontal Color Bars",
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"Vertical Color Bars",
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};
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/*
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* All-pixel scan mode (10-bit)
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* imx274 mode1(refer to datasheet) register configuration with
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* 3840x2160 resolution, raw10 data and mipi four lane output
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*/
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static const struct reg_8 imx274_mode1_3840x2160_raw10[] = {
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{0x3004, 0x01},
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{0x3005, 0x01},
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{0x3006, 0x00},
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{0x3007, 0xa2},
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{0x3018, 0xA2}, /* output XVS, HVS */
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{0x306B, 0x05},
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{0x30E2, 0x01},
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{0x30EE, 0x01},
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{0x3342, 0x0A},
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{0x3343, 0x00},
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{0x3344, 0x16},
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{0x3345, 0x00},
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{0x33A6, 0x01},
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{0x3528, 0x0E},
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{0x3554, 0x1F},
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{0x3555, 0x01},
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{0x3556, 0x01},
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{0x3557, 0x01},
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{0x3558, 0x01},
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{0x3559, 0x00},
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{0x355A, 0x00},
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{0x35BA, 0x0E},
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{0x366A, 0x1B},
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{0x366B, 0x1A},
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{0x366C, 0x19},
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{0x366D, 0x17},
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{0x3A41, 0x08},
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{IMX274_TABLE_END, 0x00}
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};
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/*
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* Horizontal/vertical 2/2-line binning
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* (Horizontal and vertical weightedbinning, 10-bit)
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* imx274 mode3(refer to datasheet) register configuration with
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* 1920x1080 resolution, raw10 data and mipi four lane output
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*/
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static const struct reg_8 imx274_mode3_1920x1080_raw10[] = {
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{0x3004, 0x02},
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{0x3005, 0x21},
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{0x3006, 0x00},
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{0x3007, 0xb1},
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{0x3018, 0xA2}, /* output XVS, HVS */
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{0x306B, 0x05},
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{0x30E2, 0x02},
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{0x30EE, 0x01},
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{0x3342, 0x0A},
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{0x3343, 0x00},
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{0x3344, 0x1A},
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{0x3345, 0x00},
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{0x33A6, 0x01},
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{0x3528, 0x0E},
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{0x3554, 0x00},
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{0x3555, 0x01},
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{0x3556, 0x01},
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{0x3557, 0x01},
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{0x3558, 0x01},
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{0x3559, 0x00},
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{0x355A, 0x00},
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{0x35BA, 0x0E},
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{0x366A, 0x1B},
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{0x366B, 0x1A},
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{0x366C, 0x19},
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{0x366D, 0x17},
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{0x3A41, 0x08},
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{IMX274_TABLE_END, 0x00}
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};
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/*
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* Vertical 2/3 subsampling binning horizontal 3 binning
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* imx274 mode5(refer to datasheet) register configuration with
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* 1280x720 resolution, raw10 data and mipi four lane output
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*/
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static const struct reg_8 imx274_mode5_1280x720_raw10[] = {
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{0x3004, 0x03},
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{0x3005, 0x31},
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{0x3006, 0x00},
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{0x3007, 0xa9},
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{0x3018, 0xA2}, /* output XVS, HVS */
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{0x306B, 0x05},
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{0x30E2, 0x03},
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{0x30EE, 0x01},
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{0x3342, 0x0A},
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{0x3343, 0x00},
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{0x3344, 0x1B},
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{0x3345, 0x00},
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{0x33A6, 0x01},
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{0x3528, 0x0E},
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{0x3554, 0x00},
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{0x3555, 0x01},
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{0x3556, 0x01},
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{0x3557, 0x01},
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{0x3558, 0x01},
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{0x3559, 0x00},
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{0x355A, 0x00},
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{0x35BA, 0x0E},
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{0x366A, 0x1B},
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{0x366B, 0x19},
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{0x366C, 0x17},
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{0x366D, 0x17},
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{0x3A41, 0x04},
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{IMX274_TABLE_END, 0x00}
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};
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/*
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* imx274 first step register configuration for
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* starting stream
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*/
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static const struct reg_8 imx274_start_1[] = {
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{IMX274_STANDBY_REG, 0x12},
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/* PLRD: clock settings */
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{0x3120, 0xF0},
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{0x3121, 0x00},
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{0x3122, 0x02},
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{0x3129, 0x9C},
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{0x312A, 0x02},
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{0x312D, 0x02},
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{0x310B, 0x00},
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/* PLSTMG */
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{0x304C, 0x00}, /* PLSTMG01 */
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{0x304D, 0x03},
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{0x331C, 0x1A},
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{0x331D, 0x00},
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{0x3502, 0x02},
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{0x3529, 0x0E},
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{0x352A, 0x0E},
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{0x352B, 0x0E},
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{0x3538, 0x0E},
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{0x3539, 0x0E},
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{0x3553, 0x00},
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{0x357D, 0x05},
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{0x357F, 0x05},
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{0x3581, 0x04},
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{0x3583, 0x76},
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{0x3587, 0x01},
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{0x35BB, 0x0E},
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{0x35BC, 0x0E},
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{0x35BD, 0x0E},
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{0x35BE, 0x0E},
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{0x35BF, 0x0E},
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{0x366E, 0x00},
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{0x366F, 0x00},
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{0x3670, 0x00},
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{0x3671, 0x00},
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/* PSMIPI */
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{0x3304, 0x32}, /* PSMIPI1 */
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{0x3305, 0x00},
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{0x3306, 0x32},
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{0x3307, 0x00},
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{0x3590, 0x32},
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{0x3591, 0x00},
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{0x3686, 0x32},
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{0x3687, 0x00},
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{IMX274_TABLE_END, 0x00}
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};
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/*
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* imx274 second step register configuration for
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* starting stream
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*/
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static const struct reg_8 imx274_start_2[] = {
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{IMX274_STANDBY_REG, 0x00},
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{0x303E, 0x02}, /* SYS_MODE = 2 */
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{IMX274_TABLE_END, 0x00}
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};
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/*
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* imx274 third step register configuration for
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* starting stream
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*/
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static const struct reg_8 imx274_start_3[] = {
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{0x30F4, 0x00},
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{0x3018, 0xA2}, /* XHS VHS OUTUPT */
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{IMX274_TABLE_END, 0x00}
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};
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/*
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* imx274 register configuration for stoping stream
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*/
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static const struct reg_8 imx274_stop[] = {
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{IMX274_STANDBY_REG, 0x01},
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{IMX274_TABLE_END, 0x00}
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};
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/*
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* imx274 disable test pattern register configuration
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*/
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static const struct reg_8 imx274_tp_disabled[] = {
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{0x303C, 0x00},
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{0x377F, 0x00},
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{0x3781, 0x00},
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{0x370B, 0x00},
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{IMX274_TABLE_END, 0x00}
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};
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/*
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* imx274 test pattern register configuration
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* reg 0x303D defines the test pattern modes
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*/
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static const struct reg_8 imx274_tp_regs[] = {
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{0x303C, 0x11},
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{0x370E, 0x01},
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{0x377F, 0x01},
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{0x3781, 0x01},
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{0x370B, 0x11},
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{IMX274_TABLE_END, 0x00}
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};
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/* nocpiop happens to be the same number for the implemented modes */
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static const struct imx274_mode imx274_modes[] = {
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{
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/* mode 1, 4K */
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.bin_ratio = 1,
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.init_regs = imx274_mode1_3840x2160_raw10,
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.min_frame_len = 4550,
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.min_SHR = 12,
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.max_fps = 60,
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.nocpiop = 112,
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},
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{
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/* mode 3, 1080p */
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.bin_ratio = 2,
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.init_regs = imx274_mode3_1920x1080_raw10,
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.min_frame_len = 2310,
|
|
.min_SHR = 8,
|
|
.max_fps = 120,
|
|
.nocpiop = 112,
|
|
},
|
|
{
|
|
/* mode 5, 720p */
|
|
.bin_ratio = 3,
|
|
.init_regs = imx274_mode5_1280x720_raw10,
|
|
.min_frame_len = 2310,
|
|
.min_SHR = 8,
|
|
.max_fps = 120,
|
|
.nocpiop = 112,
|
|
},
|
|
};
|
|
|
|
/*
|
|
* struct imx274_ctrls - imx274 ctrl structure
|
|
* @handler: V4L2 ctrl handler structure
|
|
* @exposure: Pointer to expsure ctrl structure
|
|
* @gain: Pointer to gain ctrl structure
|
|
* @vflip: Pointer to vflip ctrl structure
|
|
* @test_pattern: Pointer to test pattern ctrl structure
|
|
*/
|
|
struct imx274_ctrls {
|
|
struct v4l2_ctrl_handler handler;
|
|
struct v4l2_ctrl *exposure;
|
|
struct v4l2_ctrl *gain;
|
|
struct v4l2_ctrl *vflip;
|
|
struct v4l2_ctrl *test_pattern;
|
|
};
|
|
|
|
/*
|
|
* struct stim274 - imx274 device structure
|
|
* @sd: V4L2 subdevice structure
|
|
* @pad: Media pad structure
|
|
* @client: Pointer to I2C client
|
|
* @ctrls: imx274 control structure
|
|
* @crop: rect to be captured
|
|
* @compose: compose rect, i.e. output resolution
|
|
* @format: V4L2 media bus frame format structure
|
|
* (width and height are in sync with the compose rect)
|
|
* @frame_rate: V4L2 frame rate structure
|
|
* @regmap: Pointer to regmap structure
|
|
* @reset_gpio: Pointer to reset gpio
|
|
* @lock: Mutex structure
|
|
* @mode: Parameters for the selected readout mode
|
|
*/
|
|
struct stimx274 {
|
|
struct v4l2_subdev sd;
|
|
struct media_pad pad;
|
|
struct i2c_client *client;
|
|
struct imx274_ctrls ctrls;
|
|
struct v4l2_rect crop;
|
|
struct v4l2_mbus_framefmt format;
|
|
struct v4l2_fract frame_interval;
|
|
struct regmap *regmap;
|
|
struct gpio_desc *reset_gpio;
|
|
struct mutex lock; /* mutex lock for operations */
|
|
const struct imx274_mode *mode;
|
|
};
|
|
|
|
#define IMX274_ROUND(dim, step, flags) \
|
|
((flags) & V4L2_SEL_FLAG_GE \
|
|
? roundup((dim), (step)) \
|
|
: ((flags) & V4L2_SEL_FLAG_LE \
|
|
? rounddown((dim), (step)) \
|
|
: rounddown((dim) + (step) / 2, (step))))
|
|
|
|
/*
|
|
* Function declaration
|
|
*/
|
|
static int imx274_set_gain(struct stimx274 *priv, struct v4l2_ctrl *ctrl);
|
|
static int imx274_set_exposure(struct stimx274 *priv, int val);
|
|
static int imx274_set_vflip(struct stimx274 *priv, int val);
|
|
static int imx274_set_test_pattern(struct stimx274 *priv, int val);
|
|
static int imx274_set_frame_interval(struct stimx274 *priv,
|
|
struct v4l2_fract frame_interval);
|
|
|
|
static inline void msleep_range(unsigned int delay_base)
|
|
{
|
|
usleep_range(delay_base * 1000, delay_base * 1000 + 500);
|
|
}
|
|
|
|
/*
|
|
* v4l2_ctrl and v4l2_subdev related operations
|
|
*/
|
|
static inline struct v4l2_subdev *ctrl_to_sd(struct v4l2_ctrl *ctrl)
|
|
{
|
|
return &container_of(ctrl->handler,
|
|
struct stimx274, ctrls.handler)->sd;
|
|
}
|
|
|
|
static inline struct stimx274 *to_imx274(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct stimx274, sd);
|
|
}
|
|
|
|
/*
|
|
* Writing a register table
|
|
*
|
|
* @priv: Pointer to device
|
|
* @table: Table containing register values (with optional delays)
|
|
*
|
|
* This is used to write register table into sensor's reg map.
|
|
*
|
|
* Return: 0 on success, errors otherwise
|
|
*/
|
|
static int imx274_write_table(struct stimx274 *priv, const struct reg_8 table[])
|
|
{
|
|
struct regmap *regmap = priv->regmap;
|
|
int err = 0;
|
|
const struct reg_8 *next;
|
|
u8 val;
|
|
|
|
int range_start = -1;
|
|
int range_count = 0;
|
|
u8 range_vals[16];
|
|
int max_range_vals = ARRAY_SIZE(range_vals);
|
|
|
|
for (next = table;; next++) {
|
|
if ((next->addr != range_start + range_count) ||
|
|
(next->addr == IMX274_TABLE_END) ||
|
|
(next->addr == IMX274_TABLE_WAIT_MS) ||
|
|
(range_count == max_range_vals)) {
|
|
if (range_count == 1)
|
|
err = regmap_write(regmap,
|
|
range_start, range_vals[0]);
|
|
else if (range_count > 1)
|
|
err = regmap_bulk_write(regmap, range_start,
|
|
&range_vals[0],
|
|
range_count);
|
|
else
|
|
err = 0;
|
|
|
|
if (err)
|
|
return err;
|
|
|
|
range_start = -1;
|
|
range_count = 0;
|
|
|
|
/* Handle special address values */
|
|
if (next->addr == IMX274_TABLE_END)
|
|
break;
|
|
|
|
if (next->addr == IMX274_TABLE_WAIT_MS) {
|
|
msleep_range(next->val);
|
|
continue;
|
|
}
|
|
}
|
|
|
|
val = next->val;
|
|
|
|
if (range_start == -1)
|
|
range_start = next->addr;
|
|
|
|
range_vals[range_count++] = val;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline int imx274_read_reg(struct stimx274 *priv, u16 addr, u8 *val)
|
|
{
|
|
unsigned int uint_val;
|
|
int err;
|
|
|
|
err = regmap_read(priv->regmap, addr, &uint_val);
|
|
if (err)
|
|
dev_err(&priv->client->dev,
|
|
"%s : i2c read failed, addr = %x\n", __func__, addr);
|
|
else
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : addr 0x%x, val=0x%x\n", __func__,
|
|
addr, uint_val);
|
|
|
|
*val = uint_val;
|
|
return err;
|
|
}
|
|
|
|
static inline int imx274_write_reg(struct stimx274 *priv, u16 addr, u8 val)
|
|
{
|
|
int err;
|
|
|
|
err = regmap_write(priv->regmap, addr, val);
|
|
if (err)
|
|
dev_err(&priv->client->dev,
|
|
"%s : i2c write failed, %x = %x\n", __func__,
|
|
addr, val);
|
|
else
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : addr 0x%x, val=0x%x\n", __func__,
|
|
addr, val);
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* Read a multibyte register.
|
|
*
|
|
* Uses a bulk read where possible.
|
|
*
|
|
* @priv: Pointer to device structure
|
|
* @addr: Address of the LSB register. Other registers must be
|
|
* consecutive, least-to-most significant.
|
|
* @val: Pointer to store the register value (cpu endianness)
|
|
* @nbytes: Number of bytes to read (range: [1..3]).
|
|
* Other bytes are zet to 0.
|
|
*
|
|
* Return: 0 on success, errors otherwise
|
|
*/
|
|
static int imx274_read_mbreg(struct stimx274 *priv, u16 addr, u32 *val,
|
|
size_t nbytes)
|
|
{
|
|
__le32 val_le = 0;
|
|
int err;
|
|
|
|
err = regmap_bulk_read(priv->regmap, addr, &val_le, nbytes);
|
|
if (err) {
|
|
dev_err(&priv->client->dev,
|
|
"%s : i2c bulk read failed, %x (%zu bytes)\n",
|
|
__func__, addr, nbytes);
|
|
} else {
|
|
*val = le32_to_cpu(val_le);
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : addr 0x%x, val=0x%x (%zu bytes)\n",
|
|
__func__, addr, *val, nbytes);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* Write a multibyte register.
|
|
*
|
|
* Uses a bulk write where possible.
|
|
*
|
|
* @priv: Pointer to device structure
|
|
* @addr: Address of the LSB register. Other registers must be
|
|
* consecutive, least-to-most significant.
|
|
* @val: Value to be written to the register (cpu endianness)
|
|
* @nbytes: Number of bytes to write (range: [1..3])
|
|
*/
|
|
static int imx274_write_mbreg(struct stimx274 *priv, u16 addr, u32 val,
|
|
size_t nbytes)
|
|
{
|
|
__le32 val_le = cpu_to_le32(val);
|
|
int err;
|
|
|
|
err = regmap_bulk_write(priv->regmap, addr, &val_le, nbytes);
|
|
if (err)
|
|
dev_err(&priv->client->dev,
|
|
"%s : i2c bulk write failed, %x = %x (%zu bytes)\n",
|
|
__func__, addr, val, nbytes);
|
|
else
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : addr 0x%x, val=0x%x (%zu bytes)\n",
|
|
__func__, addr, val, nbytes);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Set mode registers to start stream.
|
|
* @priv: Pointer to device structure
|
|
*
|
|
* Return: 0 on success, errors otherwise
|
|
*/
|
|
static int imx274_mode_regs(struct stimx274 *priv)
|
|
{
|
|
int err = 0;
|
|
|
|
err = imx274_write_table(priv, imx274_start_1);
|
|
if (err)
|
|
return err;
|
|
|
|
err = imx274_write_table(priv, priv->mode->init_regs);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* imx274_start_stream - Function for starting stream per mode index
|
|
* @priv: Pointer to device structure
|
|
*
|
|
* Return: 0 on success, errors otherwise
|
|
*/
|
|
static int imx274_start_stream(struct stimx274 *priv)
|
|
{
|
|
int err = 0;
|
|
|
|
/*
|
|
* Refer to "Standby Cancel Sequence when using CSI-2" in
|
|
* imx274 datasheet, it should wait 10ms or more here.
|
|
* give it 1 extra ms for margin
|
|
*/
|
|
msleep_range(11);
|
|
err = imx274_write_table(priv, imx274_start_2);
|
|
if (err)
|
|
return err;
|
|
|
|
/*
|
|
* Refer to "Standby Cancel Sequence when using CSI-2" in
|
|
* imx274 datasheet, it should wait 7ms or more here.
|
|
* give it 1 extra ms for margin
|
|
*/
|
|
msleep_range(8);
|
|
err = imx274_write_table(priv, imx274_start_3);
|
|
if (err)
|
|
return err;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* imx274_reset - Function called to reset the sensor
|
|
* @priv: Pointer to device structure
|
|
* @rst: Input value for determining the sensor's end state after reset
|
|
*
|
|
* Set the senor in reset and then
|
|
* if rst = 0, keep it in reset;
|
|
* if rst = 1, bring it out of reset.
|
|
*
|
|
*/
|
|
static void imx274_reset(struct stimx274 *priv, int rst)
|
|
{
|
|
gpiod_set_value_cansleep(priv->reset_gpio, 0);
|
|
usleep_range(IMX274_RESET_DELAY1, IMX274_RESET_DELAY2);
|
|
gpiod_set_value_cansleep(priv->reset_gpio, !!rst);
|
|
usleep_range(IMX274_RESET_DELAY1, IMX274_RESET_DELAY2);
|
|
}
|
|
|
|
/**
|
|
* imx274_s_ctrl - This is used to set the imx274 V4L2 controls
|
|
* @ctrl: V4L2 control to be set
|
|
*
|
|
* This function is used to set the V4L2 controls for the imx274 sensor.
|
|
*
|
|
* Return: 0 on success, errors otherwise
|
|
*/
|
|
static int imx274_s_ctrl(struct v4l2_ctrl *ctrl)
|
|
{
|
|
struct v4l2_subdev *sd = ctrl_to_sd(ctrl);
|
|
struct stimx274 *imx274 = to_imx274(sd);
|
|
int ret = -EINVAL;
|
|
|
|
dev_dbg(&imx274->client->dev,
|
|
"%s : s_ctrl: %s, value: %d\n", __func__,
|
|
ctrl->name, ctrl->val);
|
|
|
|
switch (ctrl->id) {
|
|
case V4L2_CID_EXPOSURE:
|
|
dev_dbg(&imx274->client->dev,
|
|
"%s : set V4L2_CID_EXPOSURE\n", __func__);
|
|
ret = imx274_set_exposure(imx274, ctrl->val);
|
|
break;
|
|
|
|
case V4L2_CID_GAIN:
|
|
dev_dbg(&imx274->client->dev,
|
|
"%s : set V4L2_CID_GAIN\n", __func__);
|
|
ret = imx274_set_gain(imx274, ctrl);
|
|
break;
|
|
|
|
case V4L2_CID_VFLIP:
|
|
dev_dbg(&imx274->client->dev,
|
|
"%s : set V4L2_CID_VFLIP\n", __func__);
|
|
ret = imx274_set_vflip(imx274, ctrl->val);
|
|
break;
|
|
|
|
case V4L2_CID_TEST_PATTERN:
|
|
dev_dbg(&imx274->client->dev,
|
|
"%s : set V4L2_CID_TEST_PATTERN\n", __func__);
|
|
ret = imx274_set_test_pattern(imx274, ctrl->val);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int imx274_binning_goodness(struct stimx274 *imx274,
|
|
int w, int ask_w,
|
|
int h, int ask_h, u32 flags)
|
|
{
|
|
struct device *dev = &imx274->client->dev;
|
|
const int goodness = 100000;
|
|
int val = 0;
|
|
|
|
if (flags & V4L2_SEL_FLAG_GE) {
|
|
if (w < ask_w)
|
|
val -= goodness;
|
|
if (h < ask_h)
|
|
val -= goodness;
|
|
}
|
|
|
|
if (flags & V4L2_SEL_FLAG_LE) {
|
|
if (w > ask_w)
|
|
val -= goodness;
|
|
if (h > ask_h)
|
|
val -= goodness;
|
|
}
|
|
|
|
val -= abs(w - ask_w);
|
|
val -= abs(h - ask_h);
|
|
|
|
dev_dbg(dev, "%s: ask %dx%d, size %dx%d, goodness %d\n",
|
|
__func__, ask_w, ask_h, w, h, val);
|
|
|
|
return val;
|
|
}
|
|
|
|
/**
|
|
* Helper function to change binning and set both compose and format.
|
|
*
|
|
* We have two entry points to change binning: set_fmt and
|
|
* set_selection(COMPOSE). Both have to compute the new output size
|
|
* and set it in both the compose rect and the frame format size. We
|
|
* also need to do the same things after setting cropping to restore
|
|
* 1:1 binning.
|
|
*
|
|
* This function contains the common code for these three cases, it
|
|
* has many arguments in order to accommodate the needs of all of
|
|
* them.
|
|
*
|
|
* Must be called with imx274->lock locked.
|
|
*
|
|
* @imx274: The device object
|
|
* @cfg: The pad config we are editing for TRY requests
|
|
* @which: V4L2_SUBDEV_FORMAT_ACTIVE or V4L2_SUBDEV_FORMAT_TRY from the caller
|
|
* @width: Input-output parameter: set to the desired width before
|
|
* the call, contains the chosen value after returning successfully
|
|
* @height: Input-output parameter for height (see @width)
|
|
* @flags: Selection flags from struct v4l2_subdev_selection, or 0 if not
|
|
* available (when called from set_fmt)
|
|
*/
|
|
static int __imx274_change_compose(struct stimx274 *imx274,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
u32 which,
|
|
u32 *width,
|
|
u32 *height,
|
|
u32 flags)
|
|
{
|
|
struct device *dev = &imx274->client->dev;
|
|
const struct v4l2_rect *cur_crop;
|
|
struct v4l2_mbus_framefmt *tgt_fmt;
|
|
unsigned int i;
|
|
const struct imx274_mode *best_mode = &imx274_modes[0];
|
|
int best_goodness = INT_MIN;
|
|
|
|
if (which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
cur_crop = &cfg->try_crop;
|
|
tgt_fmt = &cfg->try_fmt;
|
|
} else {
|
|
cur_crop = &imx274->crop;
|
|
tgt_fmt = &imx274->format;
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(imx274_modes); i++) {
|
|
unsigned int ratio = imx274_modes[i].bin_ratio;
|
|
|
|
int goodness = imx274_binning_goodness(
|
|
imx274,
|
|
cur_crop->width / ratio, *width,
|
|
cur_crop->height / ratio, *height,
|
|
flags);
|
|
|
|
if (goodness >= best_goodness) {
|
|
best_goodness = goodness;
|
|
best_mode = &imx274_modes[i];
|
|
}
|
|
}
|
|
|
|
*width = cur_crop->width / best_mode->bin_ratio;
|
|
*height = cur_crop->height / best_mode->bin_ratio;
|
|
|
|
if (which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
|
imx274->mode = best_mode;
|
|
|
|
dev_dbg(dev, "%s: selected %u:1 binning\n",
|
|
__func__, best_mode->bin_ratio);
|
|
|
|
tgt_fmt->width = *width;
|
|
tgt_fmt->height = *height;
|
|
tgt_fmt->field = V4L2_FIELD_NONE;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx274_get_fmt - Get the pad format
|
|
* @sd: Pointer to V4L2 Sub device structure
|
|
* @cfg: Pointer to sub device pad information structure
|
|
* @fmt: Pointer to pad level media bus format
|
|
*
|
|
* This function is used to get the pad format information.
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_get_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *fmt)
|
|
{
|
|
struct stimx274 *imx274 = to_imx274(sd);
|
|
|
|
mutex_lock(&imx274->lock);
|
|
fmt->format = imx274->format;
|
|
mutex_unlock(&imx274->lock);
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx274_set_fmt - This is used to set the pad format
|
|
* @sd: Pointer to V4L2 Sub device structure
|
|
* @cfg: Pointer to sub device pad information structure
|
|
* @format: Pointer to pad level media bus format
|
|
*
|
|
* This function is used to set the pad format.
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_set_fmt(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_format *format)
|
|
{
|
|
struct v4l2_mbus_framefmt *fmt = &format->format;
|
|
struct stimx274 *imx274 = to_imx274(sd);
|
|
int err = 0;
|
|
|
|
mutex_lock(&imx274->lock);
|
|
|
|
err = __imx274_change_compose(imx274, cfg, format->which,
|
|
&fmt->width, &fmt->height, 0);
|
|
|
|
if (err)
|
|
goto out;
|
|
|
|
/*
|
|
* __imx274_change_compose already set width and height in the
|
|
* applicable format, but we need to keep all other format
|
|
* values, so do a full copy here
|
|
*/
|
|
fmt->field = V4L2_FIELD_NONE;
|
|
if (format->which == V4L2_SUBDEV_FORMAT_TRY)
|
|
cfg->try_fmt = *fmt;
|
|
else
|
|
imx274->format = *fmt;
|
|
|
|
out:
|
|
mutex_unlock(&imx274->lock);
|
|
|
|
return err;
|
|
}
|
|
|
|
static int imx274_get_selection(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_selection *sel)
|
|
{
|
|
struct stimx274 *imx274 = to_imx274(sd);
|
|
const struct v4l2_rect *src_crop;
|
|
const struct v4l2_mbus_framefmt *src_fmt;
|
|
int ret = 0;
|
|
|
|
if (sel->pad != 0)
|
|
return -EINVAL;
|
|
|
|
if (sel->target == V4L2_SEL_TGT_CROP_BOUNDS) {
|
|
sel->r.left = 0;
|
|
sel->r.top = 0;
|
|
sel->r.width = IMX274_MAX_WIDTH;
|
|
sel->r.height = IMX274_MAX_HEIGHT;
|
|
return 0;
|
|
}
|
|
|
|
if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
|
|
src_crop = &cfg->try_crop;
|
|
src_fmt = &cfg->try_fmt;
|
|
} else {
|
|
src_crop = &imx274->crop;
|
|
src_fmt = &imx274->format;
|
|
}
|
|
|
|
mutex_lock(&imx274->lock);
|
|
|
|
switch (sel->target) {
|
|
case V4L2_SEL_TGT_CROP:
|
|
sel->r = *src_crop;
|
|
break;
|
|
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
|
|
sel->r.top = 0;
|
|
sel->r.left = 0;
|
|
sel->r.width = src_crop->width;
|
|
sel->r.height = src_crop->height;
|
|
break;
|
|
case V4L2_SEL_TGT_COMPOSE:
|
|
sel->r.top = 0;
|
|
sel->r.left = 0;
|
|
sel->r.width = src_fmt->width;
|
|
sel->r.height = src_fmt->height;
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
}
|
|
|
|
mutex_unlock(&imx274->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int imx274_set_selection_crop(struct stimx274 *imx274,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_selection *sel)
|
|
{
|
|
struct v4l2_rect *tgt_crop;
|
|
struct v4l2_rect new_crop;
|
|
bool size_changed;
|
|
|
|
/*
|
|
* h_step could be 12 or 24 depending on the binning. But we
|
|
* won't know the binning until we choose the mode later in
|
|
* __imx274_change_compose(). Thus let's be safe and use the
|
|
* most conservative value in all cases.
|
|
*/
|
|
const u32 h_step = 24;
|
|
|
|
new_crop.width = min_t(u32,
|
|
IMX274_ROUND(sel->r.width, h_step, sel->flags),
|
|
IMX274_MAX_WIDTH);
|
|
|
|
/* Constraint: HTRIMMING_END - HTRIMMING_START >= 144 */
|
|
if (new_crop.width < 144)
|
|
new_crop.width = 144;
|
|
|
|
new_crop.left = min_t(u32,
|
|
IMX274_ROUND(sel->r.left, h_step, 0),
|
|
IMX274_MAX_WIDTH - new_crop.width);
|
|
|
|
new_crop.height = min_t(u32,
|
|
IMX274_ROUND(sel->r.height, 2, sel->flags),
|
|
IMX274_MAX_HEIGHT);
|
|
|
|
new_crop.top = min_t(u32, IMX274_ROUND(sel->r.top, 2, 0),
|
|
IMX274_MAX_HEIGHT - new_crop.height);
|
|
|
|
sel->r = new_crop;
|
|
|
|
if (sel->which == V4L2_SUBDEV_FORMAT_TRY)
|
|
tgt_crop = &cfg->try_crop;
|
|
else
|
|
tgt_crop = &imx274->crop;
|
|
|
|
mutex_lock(&imx274->lock);
|
|
|
|
size_changed = (new_crop.width != tgt_crop->width ||
|
|
new_crop.height != tgt_crop->height);
|
|
|
|
/* __imx274_change_compose needs the new size in *tgt_crop */
|
|
*tgt_crop = new_crop;
|
|
|
|
/* if crop size changed then reset the output image size */
|
|
if (size_changed)
|
|
__imx274_change_compose(imx274, cfg, sel->which,
|
|
&new_crop.width, &new_crop.height,
|
|
sel->flags);
|
|
|
|
mutex_unlock(&imx274->lock);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int imx274_set_selection(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_pad_config *cfg,
|
|
struct v4l2_subdev_selection *sel)
|
|
{
|
|
struct stimx274 *imx274 = to_imx274(sd);
|
|
|
|
if (sel->pad != 0)
|
|
return -EINVAL;
|
|
|
|
if (sel->target == V4L2_SEL_TGT_CROP)
|
|
return imx274_set_selection_crop(imx274, cfg, sel);
|
|
|
|
if (sel->target == V4L2_SEL_TGT_COMPOSE) {
|
|
int err;
|
|
|
|
mutex_lock(&imx274->lock);
|
|
err = __imx274_change_compose(imx274, cfg, sel->which,
|
|
&sel->r.width, &sel->r.height,
|
|
sel->flags);
|
|
mutex_unlock(&imx274->lock);
|
|
|
|
/*
|
|
* __imx274_change_compose already set width and
|
|
* height in set->r, we still need to set top-left
|
|
*/
|
|
if (!err) {
|
|
sel->r.top = 0;
|
|
sel->r.left = 0;
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static int imx274_apply_trimming(struct stimx274 *imx274)
|
|
{
|
|
u32 h_start;
|
|
u32 h_end;
|
|
u32 hmax;
|
|
u32 v_cut;
|
|
s32 v_pos;
|
|
u32 write_v_size;
|
|
u32 y_out_size;
|
|
int err;
|
|
|
|
h_start = imx274->crop.left + 12;
|
|
h_end = h_start + imx274->crop.width;
|
|
|
|
/* Use the minimum allowed value of HMAX */
|
|
/* Note: except in mode 1, (width / 16 + 23) is always < hmax_min */
|
|
/* Note: 260 is the minimum HMAX in all implemented modes */
|
|
hmax = max_t(u32, 260, (imx274->crop.width) / 16 + 23);
|
|
|
|
/* invert v_pos if VFLIP */
|
|
v_pos = imx274->ctrls.vflip->cur.val ?
|
|
(-imx274->crop.top / 2) : (imx274->crop.top / 2);
|
|
v_cut = (IMX274_MAX_HEIGHT - imx274->crop.height) / 2;
|
|
write_v_size = imx274->crop.height + 22;
|
|
y_out_size = imx274->crop.height + 14;
|
|
|
|
err = imx274_write_mbreg(imx274, IMX274_HMAX_REG_LSB, hmax, 2);
|
|
if (!err)
|
|
err = imx274_write_mbreg(imx274, IMX274_HTRIM_EN_REG, 1, 1);
|
|
if (!err)
|
|
err = imx274_write_mbreg(imx274, IMX274_HTRIM_START_REG_LSB,
|
|
h_start, 2);
|
|
if (!err)
|
|
err = imx274_write_mbreg(imx274, IMX274_HTRIM_END_REG_LSB,
|
|
h_end, 2);
|
|
if (!err)
|
|
err = imx274_write_mbreg(imx274, IMX274_VWIDCUTEN_REG, 1, 1);
|
|
if (!err)
|
|
err = imx274_write_mbreg(imx274, IMX274_VWIDCUT_REG_LSB,
|
|
v_cut, 2);
|
|
if (!err)
|
|
err = imx274_write_mbreg(imx274, IMX274_VWINPOS_REG_LSB,
|
|
v_pos, 2);
|
|
if (!err)
|
|
err = imx274_write_mbreg(imx274, IMX274_WRITE_VSIZE_REG_LSB,
|
|
write_v_size, 2);
|
|
if (!err)
|
|
err = imx274_write_mbreg(imx274, IMX274_Y_OUT_SIZE_REG_LSB,
|
|
y_out_size, 2);
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* imx274_g_frame_interval - Get the frame interval
|
|
* @sd: Pointer to V4L2 Sub device structure
|
|
* @fi: Pointer to V4l2 Sub device frame interval structure
|
|
*
|
|
* This function is used to get the frame interval.
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_g_frame_interval(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_frame_interval *fi)
|
|
{
|
|
struct stimx274 *imx274 = to_imx274(sd);
|
|
|
|
fi->interval = imx274->frame_interval;
|
|
dev_dbg(&imx274->client->dev, "%s frame rate = %d / %d\n",
|
|
__func__, imx274->frame_interval.numerator,
|
|
imx274->frame_interval.denominator);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx274_s_frame_interval - Set the frame interval
|
|
* @sd: Pointer to V4L2 Sub device structure
|
|
* @fi: Pointer to V4l2 Sub device frame interval structure
|
|
*
|
|
* This function is used to set the frame intervavl.
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_s_frame_interval(struct v4l2_subdev *sd,
|
|
struct v4l2_subdev_frame_interval *fi)
|
|
{
|
|
struct stimx274 *imx274 = to_imx274(sd);
|
|
struct v4l2_ctrl *ctrl = imx274->ctrls.exposure;
|
|
int min, max, def;
|
|
int ret;
|
|
|
|
mutex_lock(&imx274->lock);
|
|
ret = imx274_set_frame_interval(imx274, fi->interval);
|
|
|
|
if (!ret) {
|
|
/*
|
|
* exposure time range is decided by frame interval
|
|
* need to update it after frame interval changes
|
|
*/
|
|
min = IMX274_MIN_EXPOSURE_TIME;
|
|
max = fi->interval.numerator * 1000000
|
|
/ fi->interval.denominator;
|
|
def = max;
|
|
if (__v4l2_ctrl_modify_range(ctrl, min, max, 1, def)) {
|
|
dev_err(&imx274->client->dev,
|
|
"Exposure ctrl range update failed\n");
|
|
goto unlock;
|
|
}
|
|
|
|
/* update exposure time accordingly */
|
|
imx274_set_exposure(imx274, ctrl->val);
|
|
|
|
dev_dbg(&imx274->client->dev, "set frame interval to %uus\n",
|
|
fi->interval.numerator * 1000000
|
|
/ fi->interval.denominator);
|
|
}
|
|
|
|
unlock:
|
|
mutex_unlock(&imx274->lock);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* imx274_load_default - load default control values
|
|
* @priv: Pointer to device structure
|
|
*
|
|
* Return: 0 on success, errors otherwise
|
|
*/
|
|
static int imx274_load_default(struct stimx274 *priv)
|
|
{
|
|
int ret;
|
|
|
|
/* load default control values */
|
|
priv->frame_interval.numerator = 1;
|
|
priv->frame_interval.denominator = IMX274_DEF_FRAME_RATE;
|
|
priv->ctrls.exposure->val = 1000000 / IMX274_DEF_FRAME_RATE;
|
|
priv->ctrls.gain->val = IMX274_DEF_GAIN;
|
|
priv->ctrls.vflip->val = 0;
|
|
priv->ctrls.test_pattern->val = TEST_PATTERN_DISABLED;
|
|
|
|
/* update frame rate */
|
|
ret = imx274_set_frame_interval(priv,
|
|
priv->frame_interval);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* update exposure time */
|
|
ret = v4l2_ctrl_s_ctrl(priv->ctrls.exposure, priv->ctrls.exposure->val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* update gain */
|
|
ret = v4l2_ctrl_s_ctrl(priv->ctrls.gain, priv->ctrls.gain->val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* update vflip */
|
|
ret = v4l2_ctrl_s_ctrl(priv->ctrls.vflip, priv->ctrls.vflip->val);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* imx274_s_stream - It is used to start/stop the streaming.
|
|
* @sd: V4L2 Sub device
|
|
* @on: Flag (True / False)
|
|
*
|
|
* This function controls the start or stop of streaming for the
|
|
* imx274 sensor.
|
|
*
|
|
* Return: 0 on success, errors otherwise
|
|
*/
|
|
static int imx274_s_stream(struct v4l2_subdev *sd, int on)
|
|
{
|
|
struct stimx274 *imx274 = to_imx274(sd);
|
|
int ret = 0;
|
|
|
|
dev_dbg(&imx274->client->dev, "%s : %s, mode index = %td\n", __func__,
|
|
on ? "Stream Start" : "Stream Stop",
|
|
imx274->mode - &imx274_modes[0]);
|
|
|
|
mutex_lock(&imx274->lock);
|
|
|
|
if (on) {
|
|
/* load mode registers */
|
|
ret = imx274_mode_regs(imx274);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
ret = imx274_apply_trimming(imx274);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
/*
|
|
* update frame rate & expsoure. if the last mode is different,
|
|
* HMAX could be changed. As the result, frame rate & exposure
|
|
* are changed.
|
|
* gain is not affected.
|
|
*/
|
|
ret = imx274_set_frame_interval(imx274,
|
|
imx274->frame_interval);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
/* update exposure time */
|
|
ret = __v4l2_ctrl_s_ctrl(imx274->ctrls.exposure,
|
|
imx274->ctrls.exposure->val);
|
|
if (ret)
|
|
goto fail;
|
|
|
|
/* start stream */
|
|
ret = imx274_start_stream(imx274);
|
|
if (ret)
|
|
goto fail;
|
|
} else {
|
|
/* stop stream */
|
|
ret = imx274_write_table(imx274, imx274_stop);
|
|
if (ret)
|
|
goto fail;
|
|
}
|
|
|
|
mutex_unlock(&imx274->lock);
|
|
dev_dbg(&imx274->client->dev, "%s : Done\n", __func__);
|
|
return 0;
|
|
|
|
fail:
|
|
mutex_unlock(&imx274->lock);
|
|
dev_err(&imx274->client->dev, "s_stream failed\n");
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* imx274_get_frame_length - Function for obtaining current frame length
|
|
* @priv: Pointer to device structure
|
|
* @val: Pointer to obainted value
|
|
*
|
|
* frame_length = vmax x (svr + 1), in unit of hmax.
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_get_frame_length(struct stimx274 *priv, u32 *val)
|
|
{
|
|
int err;
|
|
u32 svr;
|
|
u32 vmax;
|
|
|
|
err = imx274_read_mbreg(priv, IMX274_SVR_REG_LSB, &svr, 2);
|
|
if (err)
|
|
goto fail;
|
|
|
|
err = imx274_read_mbreg(priv, IMX274_VMAX_REG_3, &vmax, 3);
|
|
if (err)
|
|
goto fail;
|
|
|
|
*val = vmax * (svr + 1);
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
|
|
return err;
|
|
}
|
|
|
|
static int imx274_clamp_coarse_time(struct stimx274 *priv, u32 *val,
|
|
u32 *frame_length)
|
|
{
|
|
int err;
|
|
|
|
err = imx274_get_frame_length(priv, frame_length);
|
|
if (err)
|
|
return err;
|
|
|
|
if (*frame_length < priv->mode->min_frame_len)
|
|
*frame_length = priv->mode->min_frame_len;
|
|
|
|
*val = *frame_length - *val; /* convert to raw shr */
|
|
if (*val > *frame_length - IMX274_SHR_LIMIT_CONST)
|
|
*val = *frame_length - IMX274_SHR_LIMIT_CONST;
|
|
else if (*val < priv->mode->min_SHR)
|
|
*val = priv->mode->min_SHR;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* imx274_set_digital gain - Function called when setting digital gain
|
|
* @priv: Pointer to device structure
|
|
* @dgain: Value of digital gain.
|
|
*
|
|
* Digital gain has only 4 steps: 1x, 2x, 4x, and 8x
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_set_digital_gain(struct stimx274 *priv, u32 dgain)
|
|
{
|
|
u8 reg_val;
|
|
|
|
reg_val = ffs(dgain);
|
|
|
|
if (reg_val)
|
|
reg_val--;
|
|
|
|
reg_val = clamp(reg_val, (u8)0, (u8)3);
|
|
|
|
return imx274_write_reg(priv, IMX274_DIGITAL_GAIN_REG,
|
|
reg_val & IMX274_MASK_LSB_4_BITS);
|
|
}
|
|
|
|
/*
|
|
* imx274_set_gain - Function called when setting gain
|
|
* @priv: Pointer to device structure
|
|
* @val: Value of gain. the real value = val << IMX274_GAIN_SHIFT;
|
|
* @ctrl: v4l2 control pointer
|
|
*
|
|
* Set the gain based on input value.
|
|
* The caller should hold the mutex lock imx274->lock if necessary
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_set_gain(struct stimx274 *priv, struct v4l2_ctrl *ctrl)
|
|
{
|
|
int err;
|
|
u32 gain, analog_gain, digital_gain, gain_reg;
|
|
|
|
gain = (u32)(ctrl->val);
|
|
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : input gain = %d.%d\n", __func__,
|
|
gain >> IMX274_GAIN_SHIFT,
|
|
((gain & IMX274_GAIN_SHIFT_MASK) * 100) >> IMX274_GAIN_SHIFT);
|
|
|
|
if (gain > IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN)
|
|
gain = IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN;
|
|
else if (gain < IMX274_MIN_GAIN)
|
|
gain = IMX274_MIN_GAIN;
|
|
|
|
if (gain <= IMX274_MAX_ANALOG_GAIN)
|
|
digital_gain = 1;
|
|
else if (gain <= IMX274_MAX_ANALOG_GAIN * 2)
|
|
digital_gain = 2;
|
|
else if (gain <= IMX274_MAX_ANALOG_GAIN * 4)
|
|
digital_gain = 4;
|
|
else
|
|
digital_gain = IMX274_MAX_DIGITAL_GAIN;
|
|
|
|
analog_gain = gain / digital_gain;
|
|
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : digital gain = %d, analog gain = %d.%d\n",
|
|
__func__, digital_gain, analog_gain >> IMX274_GAIN_SHIFT,
|
|
((analog_gain & IMX274_GAIN_SHIFT_MASK) * 100)
|
|
>> IMX274_GAIN_SHIFT);
|
|
|
|
err = imx274_set_digital_gain(priv, digital_gain);
|
|
if (err)
|
|
goto fail;
|
|
|
|
/* convert to register value, refer to imx274 datasheet */
|
|
gain_reg = (u32)IMX274_GAIN_CONST -
|
|
(IMX274_GAIN_CONST << IMX274_GAIN_SHIFT) / analog_gain;
|
|
if (gain_reg > IMX274_GAIN_REG_MAX)
|
|
gain_reg = IMX274_GAIN_REG_MAX;
|
|
|
|
err = imx274_write_mbreg(priv, IMX274_ANALOG_GAIN_ADDR_LSB, gain_reg,
|
|
2);
|
|
if (err)
|
|
goto fail;
|
|
|
|
if (IMX274_GAIN_CONST - gain_reg == 0) {
|
|
err = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
/* convert register value back to gain value */
|
|
ctrl->val = (IMX274_GAIN_CONST << IMX274_GAIN_SHIFT)
|
|
/ (IMX274_GAIN_CONST - gain_reg) * digital_gain;
|
|
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : GAIN control success, gain_reg = %d, new gain = %d\n",
|
|
__func__, gain_reg, ctrl->val);
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* imx274_set_coarse_time - Function called when setting SHR value
|
|
* @priv: Pointer to device structure
|
|
* @val: Value for exposure time in number of line_length, or [HMAX]
|
|
*
|
|
* Set SHR value based on input value.
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_set_coarse_time(struct stimx274 *priv, u32 *val)
|
|
{
|
|
int err;
|
|
u32 coarse_time, frame_length;
|
|
|
|
coarse_time = *val;
|
|
|
|
/* convert exposure_time to appropriate SHR value */
|
|
err = imx274_clamp_coarse_time(priv, &coarse_time, &frame_length);
|
|
if (err)
|
|
goto fail;
|
|
|
|
err = imx274_write_mbreg(priv, IMX274_SHR_REG_LSB, coarse_time, 2);
|
|
if (err)
|
|
goto fail;
|
|
|
|
*val = frame_length - coarse_time;
|
|
return 0;
|
|
|
|
fail:
|
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* imx274_set_exposure - Function called when setting exposure time
|
|
* @priv: Pointer to device structure
|
|
* @val: Variable for exposure time, in the unit of micro-second
|
|
*
|
|
* Set exposure time based on input value.
|
|
* The caller should hold the mutex lock imx274->lock if necessary
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_set_exposure(struct stimx274 *priv, int val)
|
|
{
|
|
int err;
|
|
u32 hmax;
|
|
u32 coarse_time; /* exposure time in unit of line (HMAX)*/
|
|
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : EXPOSURE control input = %d\n", __func__, val);
|
|
|
|
/* step 1: convert input exposure_time (val) into number of 1[HMAX] */
|
|
|
|
err = imx274_read_mbreg(priv, IMX274_HMAX_REG_LSB, &hmax, 2);
|
|
if (err)
|
|
goto fail;
|
|
|
|
if (hmax == 0) {
|
|
err = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
coarse_time = (IMX274_PIXCLK_CONST1 / IMX274_PIXCLK_CONST2 * val
|
|
- priv->mode->nocpiop) / hmax;
|
|
|
|
/* step 2: convert exposure_time into SHR value */
|
|
|
|
/* set SHR */
|
|
err = imx274_set_coarse_time(priv, &coarse_time);
|
|
if (err)
|
|
goto fail;
|
|
|
|
priv->ctrls.exposure->val =
|
|
(coarse_time * hmax + priv->mode->nocpiop)
|
|
/ (IMX274_PIXCLK_CONST1 / IMX274_PIXCLK_CONST2);
|
|
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : EXPOSURE control success\n", __func__);
|
|
return 0;
|
|
|
|
fail:
|
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* imx274_set_vflip - Function called when setting vertical flip
|
|
* @priv: Pointer to device structure
|
|
* @val: Value for vflip setting
|
|
*
|
|
* Set vertical flip based on input value.
|
|
* val = 0: normal, no vertical flip
|
|
* val = 1: vertical flip enabled
|
|
* The caller should hold the mutex lock imx274->lock if necessary
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_set_vflip(struct stimx274 *priv, int val)
|
|
{
|
|
int err;
|
|
|
|
err = imx274_write_reg(priv, IMX274_VFLIP_REG, val);
|
|
if (err) {
|
|
dev_err(&priv->client->dev, "VFLIP control error\n");
|
|
return err;
|
|
}
|
|
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : VFLIP control success\n", __func__);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* imx274_set_test_pattern - Function called when setting test pattern
|
|
* @priv: Pointer to device structure
|
|
* @val: Variable for test pattern
|
|
*
|
|
* Set to different test patterns based on input value.
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_set_test_pattern(struct stimx274 *priv, int val)
|
|
{
|
|
int err = 0;
|
|
|
|
if (val == TEST_PATTERN_DISABLED) {
|
|
err = imx274_write_table(priv, imx274_tp_disabled);
|
|
} else if (val <= TEST_PATTERN_V_COLOR_BARS) {
|
|
err = imx274_write_reg(priv, IMX274_TEST_PATTERN_REG, val - 1);
|
|
if (!err)
|
|
err = imx274_write_table(priv, imx274_tp_regs);
|
|
} else {
|
|
err = -EINVAL;
|
|
}
|
|
|
|
if (!err)
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : TEST PATTERN control success\n", __func__);
|
|
else
|
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* imx274_set_frame_length - Function called when setting frame length
|
|
* @priv: Pointer to device structure
|
|
* @val: Variable for frame length (= VMAX, i.e. vertical drive period length)
|
|
*
|
|
* Set frame length based on input value.
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_set_frame_length(struct stimx274 *priv, u32 val)
|
|
{
|
|
int err;
|
|
u32 frame_length;
|
|
|
|
dev_dbg(&priv->client->dev, "%s : input length = %d\n",
|
|
__func__, val);
|
|
|
|
frame_length = (u32)val;
|
|
|
|
err = imx274_write_mbreg(priv, IMX274_VMAX_REG_3, frame_length, 3);
|
|
if (err)
|
|
goto fail;
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* imx274_set_frame_interval - Function called when setting frame interval
|
|
* @priv: Pointer to device structure
|
|
* @frame_interval: Variable for frame interval
|
|
*
|
|
* Change frame interval by updating VMAX value
|
|
* The caller should hold the mutex lock imx274->lock if necessary
|
|
*
|
|
* Return: 0 on success
|
|
*/
|
|
static int imx274_set_frame_interval(struct stimx274 *priv,
|
|
struct v4l2_fract frame_interval)
|
|
{
|
|
int err;
|
|
u32 frame_length, req_frame_rate;
|
|
u32 svr;
|
|
u32 hmax;
|
|
|
|
dev_dbg(&priv->client->dev, "%s: input frame interval = %d / %d",
|
|
__func__, frame_interval.numerator,
|
|
frame_interval.denominator);
|
|
|
|
if (frame_interval.numerator == 0) {
|
|
err = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
req_frame_rate = (u32)(frame_interval.denominator
|
|
/ frame_interval.numerator);
|
|
|
|
/* boundary check */
|
|
if (req_frame_rate > priv->mode->max_fps) {
|
|
frame_interval.numerator = 1;
|
|
frame_interval.denominator = priv->mode->max_fps;
|
|
} else if (req_frame_rate < IMX274_MIN_FRAME_RATE) {
|
|
frame_interval.numerator = 1;
|
|
frame_interval.denominator = IMX274_MIN_FRAME_RATE;
|
|
}
|
|
|
|
/*
|
|
* VMAX = 1/frame_rate x 72M / (SVR+1) / HMAX
|
|
* frame_length (i.e. VMAX) = (frame_interval) x 72M /(SVR+1) / HMAX
|
|
*/
|
|
|
|
err = imx274_read_mbreg(priv, IMX274_SVR_REG_LSB, &svr, 2);
|
|
if (err)
|
|
goto fail;
|
|
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : register SVR = %d\n", __func__, svr);
|
|
|
|
err = imx274_read_mbreg(priv, IMX274_HMAX_REG_LSB, &hmax, 2);
|
|
if (err)
|
|
goto fail;
|
|
|
|
dev_dbg(&priv->client->dev,
|
|
"%s : register HMAX = %d\n", __func__, hmax);
|
|
|
|
if (hmax == 0 || frame_interval.denominator == 0) {
|
|
err = -EINVAL;
|
|
goto fail;
|
|
}
|
|
|
|
frame_length = IMX274_PIXCLK_CONST1 / (svr + 1) / hmax
|
|
* frame_interval.numerator
|
|
/ frame_interval.denominator;
|
|
|
|
err = imx274_set_frame_length(priv, frame_length);
|
|
if (err)
|
|
goto fail;
|
|
|
|
priv->frame_interval = frame_interval;
|
|
return 0;
|
|
|
|
fail:
|
|
dev_err(&priv->client->dev, "%s error = %d\n", __func__, err);
|
|
return err;
|
|
}
|
|
|
|
static const struct v4l2_subdev_pad_ops imx274_pad_ops = {
|
|
.get_fmt = imx274_get_fmt,
|
|
.set_fmt = imx274_set_fmt,
|
|
.get_selection = imx274_get_selection,
|
|
.set_selection = imx274_set_selection,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops imx274_video_ops = {
|
|
.g_frame_interval = imx274_g_frame_interval,
|
|
.s_frame_interval = imx274_s_frame_interval,
|
|
.s_stream = imx274_s_stream,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops imx274_subdev_ops = {
|
|
.pad = &imx274_pad_ops,
|
|
.video = &imx274_video_ops,
|
|
};
|
|
|
|
static const struct v4l2_ctrl_ops imx274_ctrl_ops = {
|
|
.s_ctrl = imx274_s_ctrl,
|
|
};
|
|
|
|
static const struct of_device_id imx274_of_id_table[] = {
|
|
{ .compatible = "sony,imx274" },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(of, imx274_of_id_table);
|
|
|
|
static const struct i2c_device_id imx274_id[] = {
|
|
{ "IMX274", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, imx274_id);
|
|
|
|
static int imx274_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
struct v4l2_subdev *sd;
|
|
struct stimx274 *imx274;
|
|
int ret;
|
|
|
|
/* initialize imx274 */
|
|
imx274 = devm_kzalloc(&client->dev, sizeof(*imx274), GFP_KERNEL);
|
|
if (!imx274)
|
|
return -ENOMEM;
|
|
|
|
mutex_init(&imx274->lock);
|
|
|
|
/* initialize format */
|
|
imx274->mode = &imx274_modes[IMX274_DEFAULT_BINNING];
|
|
imx274->crop.width = IMX274_MAX_WIDTH;
|
|
imx274->crop.height = IMX274_MAX_HEIGHT;
|
|
imx274->format.width = imx274->crop.width / imx274->mode->bin_ratio;
|
|
imx274->format.height = imx274->crop.height / imx274->mode->bin_ratio;
|
|
imx274->format.field = V4L2_FIELD_NONE;
|
|
imx274->format.code = MEDIA_BUS_FMT_SRGGB10_1X10;
|
|
imx274->format.colorspace = V4L2_COLORSPACE_SRGB;
|
|
imx274->frame_interval.numerator = 1;
|
|
imx274->frame_interval.denominator = IMX274_DEF_FRAME_RATE;
|
|
|
|
/* initialize regmap */
|
|
imx274->regmap = devm_regmap_init_i2c(client, &imx274_regmap_config);
|
|
if (IS_ERR(imx274->regmap)) {
|
|
dev_err(&client->dev,
|
|
"regmap init failed: %ld\n", PTR_ERR(imx274->regmap));
|
|
ret = -ENODEV;
|
|
goto err_regmap;
|
|
}
|
|
|
|
/* initialize subdevice */
|
|
imx274->client = client;
|
|
sd = &imx274->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &imx274_subdev_ops);
|
|
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
|
|
|
|
/* initialize subdev media pad */
|
|
imx274->pad.flags = MEDIA_PAD_FL_SOURCE;
|
|
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
|
|
ret = media_entity_pads_init(&sd->entity, 1, &imx274->pad);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev,
|
|
"%s : media entity init Failed %d\n", __func__, ret);
|
|
goto err_regmap;
|
|
}
|
|
|
|
/* initialize sensor reset gpio */
|
|
imx274->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
|
|
GPIOD_OUT_HIGH);
|
|
if (IS_ERR(imx274->reset_gpio)) {
|
|
if (PTR_ERR(imx274->reset_gpio) != -EPROBE_DEFER)
|
|
dev_err(&client->dev, "Reset GPIO not setup in DT");
|
|
ret = PTR_ERR(imx274->reset_gpio);
|
|
goto err_me;
|
|
}
|
|
|
|
/* pull sensor out of reset */
|
|
imx274_reset(imx274, 1);
|
|
|
|
/* initialize controls */
|
|
ret = v4l2_ctrl_handler_init(&imx274->ctrls.handler, 4);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev,
|
|
"%s : ctrl handler init Failed\n", __func__);
|
|
goto err_me;
|
|
}
|
|
|
|
imx274->ctrls.handler.lock = &imx274->lock;
|
|
|
|
/* add new controls */
|
|
imx274->ctrls.test_pattern = v4l2_ctrl_new_std_menu_items(
|
|
&imx274->ctrls.handler, &imx274_ctrl_ops,
|
|
V4L2_CID_TEST_PATTERN,
|
|
ARRAY_SIZE(tp_qmenu) - 1, 0, 0, tp_qmenu);
|
|
|
|
imx274->ctrls.gain = v4l2_ctrl_new_std(
|
|
&imx274->ctrls.handler,
|
|
&imx274_ctrl_ops,
|
|
V4L2_CID_GAIN, IMX274_MIN_GAIN,
|
|
IMX274_MAX_DIGITAL_GAIN * IMX274_MAX_ANALOG_GAIN, 1,
|
|
IMX274_DEF_GAIN);
|
|
|
|
imx274->ctrls.exposure = v4l2_ctrl_new_std(
|
|
&imx274->ctrls.handler,
|
|
&imx274_ctrl_ops,
|
|
V4L2_CID_EXPOSURE, IMX274_MIN_EXPOSURE_TIME,
|
|
1000000 / IMX274_DEF_FRAME_RATE, 1,
|
|
IMX274_MIN_EXPOSURE_TIME);
|
|
|
|
imx274->ctrls.vflip = v4l2_ctrl_new_std(
|
|
&imx274->ctrls.handler,
|
|
&imx274_ctrl_ops,
|
|
V4L2_CID_VFLIP, 0, 1, 1, 0);
|
|
|
|
imx274->sd.ctrl_handler = &imx274->ctrls.handler;
|
|
if (imx274->ctrls.handler.error) {
|
|
ret = imx274->ctrls.handler.error;
|
|
goto err_ctrls;
|
|
}
|
|
|
|
/* setup default controls */
|
|
ret = v4l2_ctrl_handler_setup(&imx274->ctrls.handler);
|
|
if (ret) {
|
|
dev_err(&client->dev,
|
|
"Error %d setup default controls\n", ret);
|
|
goto err_ctrls;
|
|
}
|
|
|
|
/* load default control values */
|
|
ret = imx274_load_default(imx274);
|
|
if (ret) {
|
|
dev_err(&client->dev,
|
|
"%s : imx274_load_default failed %d\n",
|
|
__func__, ret);
|
|
goto err_ctrls;
|
|
}
|
|
|
|
/* register subdevice */
|
|
ret = v4l2_async_register_subdev(sd);
|
|
if (ret < 0) {
|
|
dev_err(&client->dev,
|
|
"%s : v4l2_async_register_subdev failed %d\n",
|
|
__func__, ret);
|
|
goto err_ctrls;
|
|
}
|
|
|
|
dev_info(&client->dev, "imx274 : imx274 probe success !\n");
|
|
return 0;
|
|
|
|
err_ctrls:
|
|
v4l2_ctrl_handler_free(&imx274->ctrls.handler);
|
|
err_me:
|
|
media_entity_cleanup(&sd->entity);
|
|
err_regmap:
|
|
mutex_destroy(&imx274->lock);
|
|
return ret;
|
|
}
|
|
|
|
static int imx274_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct stimx274 *imx274 = to_imx274(sd);
|
|
|
|
/* stop stream */
|
|
imx274_write_table(imx274, imx274_stop);
|
|
|
|
v4l2_async_unregister_subdev(sd);
|
|
v4l2_ctrl_handler_free(&imx274->ctrls.handler);
|
|
media_entity_cleanup(&sd->entity);
|
|
mutex_destroy(&imx274->lock);
|
|
return 0;
|
|
}
|
|
|
|
static struct i2c_driver imx274_i2c_driver = {
|
|
.driver = {
|
|
.name = DRIVER_NAME,
|
|
.of_match_table = imx274_of_id_table,
|
|
},
|
|
.probe = imx274_probe,
|
|
.remove = imx274_remove,
|
|
.id_table = imx274_id,
|
|
};
|
|
|
|
module_i2c_driver(imx274_i2c_driver);
|
|
|
|
MODULE_AUTHOR("Leon Luo <leonl@leopardimaging.com>");
|
|
MODULE_DESCRIPTION("IMX274 CMOS Image Sensor driver");
|
|
MODULE_LICENSE("GPL v2");
|