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1607 lines
39 KiB
1607 lines
39 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* A V4L2 driver for Sony IMX219 cameras. |
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* Copyright (C) 2019, Raspberry Pi (Trading) Ltd |
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* |
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* Based on Sony imx258 camera driver |
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* Copyright (C) 2018 Intel Corporation |
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* |
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* DT / fwnode changes, and regulator / GPIO control taken from imx214 driver |
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* Copyright 2018 Qtechnology A/S |
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* |
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* Flip handling taken from the Sony IMX319 driver. |
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* Copyright (C) 2018 Intel Corporation |
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* |
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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/consumer.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 <linux/regulator/consumer.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-event.h> |
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#include <media/v4l2-fwnode.h> |
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#include <media/v4l2-mediabus.h> |
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#include <asm/unaligned.h> |
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#define IMX219_REG_VALUE_08BIT 1 |
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#define IMX219_REG_VALUE_16BIT 2 |
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#define IMX219_REG_MODE_SELECT 0x0100 |
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#define IMX219_MODE_STANDBY 0x00 |
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#define IMX219_MODE_STREAMING 0x01 |
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/* Chip ID */ |
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#define IMX219_REG_CHIP_ID 0x0000 |
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#define IMX219_CHIP_ID 0x0219 |
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/* External clock frequency is 24.0M */ |
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#define IMX219_XCLK_FREQ 24000000 |
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/* Pixel rate is fixed at 182.4M for all the modes */ |
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#define IMX219_PIXEL_RATE 182400000 |
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#define IMX219_DEFAULT_LINK_FREQ 456000000 |
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/* V_TIMING internal */ |
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#define IMX219_REG_VTS 0x0160 |
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#define IMX219_VTS_15FPS 0x0dc6 |
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#define IMX219_VTS_30FPS_1080P 0x06e3 |
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#define IMX219_VTS_30FPS_BINNED 0x06e3 |
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#define IMX219_VTS_30FPS_640x480 0x06e3 |
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#define IMX219_VTS_MAX 0xffff |
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#define IMX219_VBLANK_MIN 4 |
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/*Frame Length Line*/ |
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#define IMX219_FLL_MIN 0x08a6 |
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#define IMX219_FLL_MAX 0xffff |
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#define IMX219_FLL_STEP 1 |
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#define IMX219_FLL_DEFAULT 0x0c98 |
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/* HBLANK control - read only */ |
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#define IMX219_PPL_DEFAULT 3448 |
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/* Exposure control */ |
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#define IMX219_REG_EXPOSURE 0x015a |
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#define IMX219_EXPOSURE_MIN 4 |
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#define IMX219_EXPOSURE_STEP 1 |
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#define IMX219_EXPOSURE_DEFAULT 0x640 |
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#define IMX219_EXPOSURE_MAX 65535 |
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/* Analog gain control */ |
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#define IMX219_REG_ANALOG_GAIN 0x0157 |
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#define IMX219_ANA_GAIN_MIN 0 |
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#define IMX219_ANA_GAIN_MAX 232 |
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#define IMX219_ANA_GAIN_STEP 1 |
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#define IMX219_ANA_GAIN_DEFAULT 0x0 |
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/* Digital gain control */ |
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#define IMX219_REG_DIGITAL_GAIN 0x0158 |
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#define IMX219_DGTL_GAIN_MIN 0x0100 |
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#define IMX219_DGTL_GAIN_MAX 0x0fff |
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#define IMX219_DGTL_GAIN_DEFAULT 0x0100 |
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#define IMX219_DGTL_GAIN_STEP 1 |
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#define IMX219_REG_ORIENTATION 0x0172 |
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/* Test Pattern Control */ |
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#define IMX219_REG_TEST_PATTERN 0x0600 |
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#define IMX219_TEST_PATTERN_DISABLE 0 |
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#define IMX219_TEST_PATTERN_SOLID_COLOR 1 |
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#define IMX219_TEST_PATTERN_COLOR_BARS 2 |
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#define IMX219_TEST_PATTERN_GREY_COLOR 3 |
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#define IMX219_TEST_PATTERN_PN9 4 |
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/* Test pattern colour components */ |
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#define IMX219_REG_TESTP_RED 0x0602 |
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#define IMX219_REG_TESTP_GREENR 0x0604 |
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#define IMX219_REG_TESTP_BLUE 0x0606 |
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#define IMX219_REG_TESTP_GREENB 0x0608 |
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#define IMX219_TESTP_COLOUR_MIN 0 |
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#define IMX219_TESTP_COLOUR_MAX 0x03ff |
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#define IMX219_TESTP_COLOUR_STEP 1 |
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#define IMX219_TESTP_RED_DEFAULT IMX219_TESTP_COLOUR_MAX |
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#define IMX219_TESTP_GREENR_DEFAULT 0 |
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#define IMX219_TESTP_BLUE_DEFAULT 0 |
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#define IMX219_TESTP_GREENB_DEFAULT 0 |
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/* IMX219 native and active pixel array size. */ |
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#define IMX219_NATIVE_WIDTH 3296U |
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#define IMX219_NATIVE_HEIGHT 2480U |
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#define IMX219_PIXEL_ARRAY_LEFT 8U |
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#define IMX219_PIXEL_ARRAY_TOP 8U |
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#define IMX219_PIXEL_ARRAY_WIDTH 3280U |
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#define IMX219_PIXEL_ARRAY_HEIGHT 2464U |
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struct imx219_reg { |
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u16 address; |
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u8 val; |
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}; |
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struct imx219_reg_list { |
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unsigned int num_of_regs; |
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const struct imx219_reg *regs; |
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}; |
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/* Mode : resolution and related config&values */ |
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struct imx219_mode { |
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/* Frame width */ |
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unsigned int width; |
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/* Frame height */ |
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unsigned int height; |
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/* Analog crop rectangle. */ |
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struct v4l2_rect crop; |
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/* V-timing */ |
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unsigned int vts_def; |
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/* Default register values */ |
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struct imx219_reg_list reg_list; |
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}; |
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/* |
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* Register sets lifted off the i2C interface from the Raspberry Pi firmware |
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* driver. |
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* 3280x2464 = mode 2, 1920x1080 = mode 1, 1640x1232 = mode 4, 640x480 = mode 7. |
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*/ |
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static const struct imx219_reg mode_3280x2464_regs[] = { |
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{0x0100, 0x00}, |
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{0x30eb, 0x0c}, |
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{0x30eb, 0x05}, |
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{0x300a, 0xff}, |
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{0x300b, 0xff}, |
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{0x30eb, 0x05}, |
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{0x30eb, 0x09}, |
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{0x0114, 0x01}, |
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{0x0128, 0x00}, |
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{0x012a, 0x18}, |
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{0x012b, 0x00}, |
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{0x0164, 0x00}, |
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{0x0165, 0x00}, |
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{0x0166, 0x0c}, |
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{0x0167, 0xcf}, |
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{0x0168, 0x00}, |
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{0x0169, 0x00}, |
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{0x016a, 0x09}, |
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{0x016b, 0x9f}, |
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{0x016c, 0x0c}, |
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{0x016d, 0xd0}, |
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{0x016e, 0x09}, |
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{0x016f, 0xa0}, |
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{0x0170, 0x01}, |
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{0x0171, 0x01}, |
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{0x0174, 0x00}, |
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{0x0175, 0x00}, |
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{0x0301, 0x05}, |
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{0x0303, 0x01}, |
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{0x0304, 0x03}, |
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{0x0305, 0x03}, |
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{0x0306, 0x00}, |
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{0x0307, 0x39}, |
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{0x030b, 0x01}, |
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{0x030c, 0x00}, |
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{0x030d, 0x72}, |
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{0x0624, 0x0c}, |
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{0x0625, 0xd0}, |
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{0x0626, 0x09}, |
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{0x0627, 0xa0}, |
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{0x455e, 0x00}, |
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{0x471e, 0x4b}, |
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{0x4767, 0x0f}, |
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{0x4750, 0x14}, |
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{0x4540, 0x00}, |
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{0x47b4, 0x14}, |
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{0x4713, 0x30}, |
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{0x478b, 0x10}, |
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{0x478f, 0x10}, |
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{0x4793, 0x10}, |
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{0x4797, 0x0e}, |
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{0x479b, 0x0e}, |
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{0x0162, 0x0d}, |
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{0x0163, 0x78}, |
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}; |
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static const struct imx219_reg mode_1920_1080_regs[] = { |
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{0x0100, 0x00}, |
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{0x30eb, 0x05}, |
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{0x30eb, 0x0c}, |
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{0x300a, 0xff}, |
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{0x300b, 0xff}, |
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{0x30eb, 0x05}, |
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{0x30eb, 0x09}, |
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{0x0114, 0x01}, |
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{0x0128, 0x00}, |
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{0x012a, 0x18}, |
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{0x012b, 0x00}, |
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{0x0162, 0x0d}, |
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{0x0163, 0x78}, |
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{0x0164, 0x02}, |
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{0x0165, 0xa8}, |
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{0x0166, 0x0a}, |
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{0x0167, 0x27}, |
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{0x0168, 0x02}, |
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{0x0169, 0xb4}, |
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{0x016a, 0x06}, |
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{0x016b, 0xeb}, |
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{0x016c, 0x07}, |
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{0x016d, 0x80}, |
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{0x016e, 0x04}, |
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{0x016f, 0x38}, |
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{0x0170, 0x01}, |
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{0x0171, 0x01}, |
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{0x0174, 0x00}, |
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{0x0175, 0x00}, |
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{0x0301, 0x05}, |
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{0x0303, 0x01}, |
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{0x0304, 0x03}, |
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{0x0305, 0x03}, |
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{0x0306, 0x00}, |
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{0x0307, 0x39}, |
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{0x030b, 0x01}, |
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{0x030c, 0x00}, |
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{0x030d, 0x72}, |
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{0x0624, 0x07}, |
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{0x0625, 0x80}, |
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{0x0626, 0x04}, |
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{0x0627, 0x38}, |
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{0x455e, 0x00}, |
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{0x471e, 0x4b}, |
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{0x4767, 0x0f}, |
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{0x4750, 0x14}, |
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{0x4540, 0x00}, |
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{0x47b4, 0x14}, |
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{0x4713, 0x30}, |
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{0x478b, 0x10}, |
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{0x478f, 0x10}, |
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{0x4793, 0x10}, |
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{0x4797, 0x0e}, |
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{0x479b, 0x0e}, |
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}; |
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static const struct imx219_reg mode_1640_1232_regs[] = { |
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{0x0100, 0x00}, |
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{0x30eb, 0x0c}, |
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{0x30eb, 0x05}, |
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{0x300a, 0xff}, |
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{0x300b, 0xff}, |
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{0x30eb, 0x05}, |
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{0x30eb, 0x09}, |
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{0x0114, 0x01}, |
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{0x0128, 0x00}, |
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{0x012a, 0x18}, |
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{0x012b, 0x00}, |
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{0x0164, 0x00}, |
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{0x0165, 0x00}, |
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{0x0166, 0x0c}, |
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{0x0167, 0xcf}, |
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{0x0168, 0x00}, |
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{0x0169, 0x00}, |
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{0x016a, 0x09}, |
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{0x016b, 0x9f}, |
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{0x016c, 0x06}, |
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{0x016d, 0x68}, |
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{0x016e, 0x04}, |
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{0x016f, 0xd0}, |
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{0x0170, 0x01}, |
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{0x0171, 0x01}, |
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{0x0174, 0x01}, |
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{0x0175, 0x01}, |
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{0x0301, 0x05}, |
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{0x0303, 0x01}, |
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{0x0304, 0x03}, |
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{0x0305, 0x03}, |
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{0x0306, 0x00}, |
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{0x0307, 0x39}, |
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{0x030b, 0x01}, |
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{0x030c, 0x00}, |
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{0x030d, 0x72}, |
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{0x0624, 0x06}, |
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{0x0625, 0x68}, |
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{0x0626, 0x04}, |
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{0x0627, 0xd0}, |
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{0x455e, 0x00}, |
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{0x471e, 0x4b}, |
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{0x4767, 0x0f}, |
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{0x4750, 0x14}, |
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{0x4540, 0x00}, |
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{0x47b4, 0x14}, |
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{0x4713, 0x30}, |
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{0x478b, 0x10}, |
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{0x478f, 0x10}, |
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{0x4793, 0x10}, |
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{0x4797, 0x0e}, |
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{0x479b, 0x0e}, |
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{0x0162, 0x0d}, |
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{0x0163, 0x78}, |
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}; |
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static const struct imx219_reg mode_640_480_regs[] = { |
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{0x0100, 0x00}, |
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{0x30eb, 0x05}, |
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{0x30eb, 0x0c}, |
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{0x300a, 0xff}, |
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{0x300b, 0xff}, |
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{0x30eb, 0x05}, |
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{0x30eb, 0x09}, |
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{0x0114, 0x01}, |
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{0x0128, 0x00}, |
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{0x012a, 0x18}, |
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{0x012b, 0x00}, |
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{0x0162, 0x0d}, |
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{0x0163, 0x78}, |
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{0x0164, 0x03}, |
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{0x0165, 0xe8}, |
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{0x0166, 0x08}, |
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{0x0167, 0xe7}, |
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{0x0168, 0x02}, |
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{0x0169, 0xf0}, |
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{0x016a, 0x06}, |
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{0x016b, 0xaf}, |
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{0x016c, 0x02}, |
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{0x016d, 0x80}, |
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{0x016e, 0x01}, |
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{0x016f, 0xe0}, |
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{0x0170, 0x01}, |
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{0x0171, 0x01}, |
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{0x0174, 0x03}, |
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{0x0175, 0x03}, |
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{0x0301, 0x05}, |
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{0x0303, 0x01}, |
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{0x0304, 0x03}, |
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{0x0305, 0x03}, |
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{0x0306, 0x00}, |
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{0x0307, 0x39}, |
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{0x030b, 0x01}, |
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{0x030c, 0x00}, |
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{0x030d, 0x72}, |
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{0x0624, 0x06}, |
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{0x0625, 0x68}, |
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{0x0626, 0x04}, |
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{0x0627, 0xd0}, |
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{0x455e, 0x00}, |
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{0x471e, 0x4b}, |
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{0x4767, 0x0f}, |
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{0x4750, 0x14}, |
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{0x4540, 0x00}, |
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{0x47b4, 0x14}, |
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{0x4713, 0x30}, |
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{0x478b, 0x10}, |
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{0x478f, 0x10}, |
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{0x4793, 0x10}, |
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{0x4797, 0x0e}, |
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{0x479b, 0x0e}, |
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}; |
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static const struct imx219_reg raw8_framefmt_regs[] = { |
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{0x018c, 0x08}, |
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{0x018d, 0x08}, |
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{0x0309, 0x08}, |
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}; |
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static const struct imx219_reg raw10_framefmt_regs[] = { |
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{0x018c, 0x0a}, |
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{0x018d, 0x0a}, |
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{0x0309, 0x0a}, |
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}; |
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static const s64 imx219_link_freq_menu[] = { |
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IMX219_DEFAULT_LINK_FREQ, |
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}; |
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static const char * const imx219_test_pattern_menu[] = { |
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"Disabled", |
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"Color Bars", |
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"Solid Color", |
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"Grey Color Bars", |
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"PN9" |
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}; |
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static const int imx219_test_pattern_val[] = { |
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IMX219_TEST_PATTERN_DISABLE, |
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IMX219_TEST_PATTERN_COLOR_BARS, |
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IMX219_TEST_PATTERN_SOLID_COLOR, |
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IMX219_TEST_PATTERN_GREY_COLOR, |
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IMX219_TEST_PATTERN_PN9, |
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}; |
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/* regulator supplies */ |
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static const char * const imx219_supply_name[] = { |
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/* Supplies can be enabled in any order */ |
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"VANA", /* Analog (2.8V) supply */ |
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"VDIG", /* Digital Core (1.8V) supply */ |
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"VDDL", /* IF (1.2V) supply */ |
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}; |
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#define IMX219_NUM_SUPPLIES ARRAY_SIZE(imx219_supply_name) |
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|
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/* |
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* The supported formats. |
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* This table MUST contain 4 entries per format, to cover the various flip |
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* combinations in the order |
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* - no flip |
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* - h flip |
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* - v flip |
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* - h&v flips |
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*/ |
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static const u32 codes[] = { |
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MEDIA_BUS_FMT_SRGGB10_1X10, |
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MEDIA_BUS_FMT_SGRBG10_1X10, |
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MEDIA_BUS_FMT_SGBRG10_1X10, |
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MEDIA_BUS_FMT_SBGGR10_1X10, |
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MEDIA_BUS_FMT_SRGGB8_1X8, |
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MEDIA_BUS_FMT_SGRBG8_1X8, |
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MEDIA_BUS_FMT_SGBRG8_1X8, |
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MEDIA_BUS_FMT_SBGGR8_1X8, |
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}; |
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/* |
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* Initialisation delay between XCLR low->high and the moment when the sensor |
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* can start capture (i.e. can leave software stanby) must be not less than: |
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* t4 + max(t5, t6 + <time to initialize the sensor register over I2C>) |
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* where |
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* t4 is fixed, and is max 200uS, |
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* t5 is fixed, and is 6000uS, |
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* t6 depends on the sensor external clock, and is max 32000 clock periods. |
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* As per sensor datasheet, the external clock must be from 6MHz to 27MHz. |
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* So for any acceptable external clock t6 is always within the range of |
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* 1185 to 5333 uS, and is always less than t5. |
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* For this reason this is always safe to wait (t4 + t5) = 6200 uS, then |
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* initialize the sensor over I2C, and then exit the software standby. |
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* |
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* This start-up time can be optimized a bit more, if we start the writes |
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* over I2C after (t4+t6), but before (t4+t5) expires. But then sensor |
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* initialization over I2C may complete before (t4+t5) expires, and we must |
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* ensure that capture is not started before (t4+t5). |
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* |
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* This delay doesn't account for the power supply startup time. If needed, |
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* this should be taken care of via the regulator framework. E.g. in the |
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* case of DT for regulator-fixed one should define the startup-delay-us |
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* property. |
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*/ |
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#define IMX219_XCLR_MIN_DELAY_US 6200 |
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#define IMX219_XCLR_DELAY_RANGE_US 1000 |
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|
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/* Mode configs */ |
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static const struct imx219_mode supported_modes[] = { |
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{ |
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/* 8MPix 15fps mode */ |
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.width = 3280, |
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.height = 2464, |
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.crop = { |
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.left = IMX219_PIXEL_ARRAY_LEFT, |
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.top = IMX219_PIXEL_ARRAY_TOP, |
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.width = 3280, |
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.height = 2464 |
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}, |
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.vts_def = IMX219_VTS_15FPS, |
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.reg_list = { |
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.num_of_regs = ARRAY_SIZE(mode_3280x2464_regs), |
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.regs = mode_3280x2464_regs, |
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}, |
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}, |
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{ |
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/* 1080P 30fps cropped */ |
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.width = 1920, |
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.height = 1080, |
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.crop = { |
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.left = 688, |
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.top = 700, |
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.width = 1920, |
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.height = 1080 |
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}, |
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.vts_def = IMX219_VTS_30FPS_1080P, |
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.reg_list = { |
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.num_of_regs = ARRAY_SIZE(mode_1920_1080_regs), |
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.regs = mode_1920_1080_regs, |
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}, |
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}, |
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{ |
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/* 2x2 binned 30fps mode */ |
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.width = 1640, |
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.height = 1232, |
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.crop = { |
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.left = IMX219_PIXEL_ARRAY_LEFT, |
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.top = IMX219_PIXEL_ARRAY_TOP, |
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.width = 3280, |
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.height = 2464 |
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}, |
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.vts_def = IMX219_VTS_30FPS_BINNED, |
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.reg_list = { |
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.num_of_regs = ARRAY_SIZE(mode_1640_1232_regs), |
|
.regs = mode_1640_1232_regs, |
|
}, |
|
}, |
|
{ |
|
/* 640x480 30fps mode */ |
|
.width = 640, |
|
.height = 480, |
|
.crop = { |
|
.left = 1008, |
|
.top = 760, |
|
.width = 1280, |
|
.height = 960 |
|
}, |
|
.vts_def = IMX219_VTS_30FPS_640x480, |
|
.reg_list = { |
|
.num_of_regs = ARRAY_SIZE(mode_640_480_regs), |
|
.regs = mode_640_480_regs, |
|
}, |
|
}, |
|
}; |
|
|
|
struct imx219 { |
|
struct v4l2_subdev sd; |
|
struct media_pad pad; |
|
|
|
struct v4l2_mbus_framefmt fmt; |
|
|
|
struct clk *xclk; /* system clock to IMX219 */ |
|
u32 xclk_freq; |
|
|
|
struct gpio_desc *reset_gpio; |
|
struct regulator_bulk_data supplies[IMX219_NUM_SUPPLIES]; |
|
|
|
struct v4l2_ctrl_handler ctrl_handler; |
|
/* V4L2 Controls */ |
|
struct v4l2_ctrl *pixel_rate; |
|
struct v4l2_ctrl *link_freq; |
|
struct v4l2_ctrl *exposure; |
|
struct v4l2_ctrl *vflip; |
|
struct v4l2_ctrl *hflip; |
|
struct v4l2_ctrl *vblank; |
|
struct v4l2_ctrl *hblank; |
|
|
|
/* Current mode */ |
|
const struct imx219_mode *mode; |
|
|
|
/* |
|
* Mutex for serialized access: |
|
* Protect sensor module set pad format and start/stop streaming safely. |
|
*/ |
|
struct mutex mutex; |
|
|
|
/* Streaming on/off */ |
|
bool streaming; |
|
}; |
|
|
|
static inline struct imx219 *to_imx219(struct v4l2_subdev *_sd) |
|
{ |
|
return container_of(_sd, struct imx219, sd); |
|
} |
|
|
|
/* Read registers up to 2 at a time */ |
|
static int imx219_read_reg(struct imx219 *imx219, u16 reg, u32 len, u32 *val) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); |
|
struct i2c_msg msgs[2]; |
|
u8 addr_buf[2] = { reg >> 8, reg & 0xff }; |
|
u8 data_buf[4] = { 0, }; |
|
int ret; |
|
|
|
if (len > 4) |
|
return -EINVAL; |
|
|
|
/* Write register address */ |
|
msgs[0].addr = client->addr; |
|
msgs[0].flags = 0; |
|
msgs[0].len = ARRAY_SIZE(addr_buf); |
|
msgs[0].buf = addr_buf; |
|
|
|
/* Read data from register */ |
|
msgs[1].addr = client->addr; |
|
msgs[1].flags = I2C_M_RD; |
|
msgs[1].len = len; |
|
msgs[1].buf = &data_buf[4 - len]; |
|
|
|
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); |
|
if (ret != ARRAY_SIZE(msgs)) |
|
return -EIO; |
|
|
|
*val = get_unaligned_be32(data_buf); |
|
|
|
return 0; |
|
} |
|
|
|
/* Write registers up to 2 at a time */ |
|
static int imx219_write_reg(struct imx219 *imx219, u16 reg, u32 len, u32 val) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); |
|
u8 buf[6]; |
|
|
|
if (len > 4) |
|
return -EINVAL; |
|
|
|
put_unaligned_be16(reg, buf); |
|
put_unaligned_be32(val << (8 * (4 - len)), buf + 2); |
|
if (i2c_master_send(client, buf, len + 2) != len + 2) |
|
return -EIO; |
|
|
|
return 0; |
|
} |
|
|
|
/* Write a list of registers */ |
|
static int imx219_write_regs(struct imx219 *imx219, |
|
const struct imx219_reg *regs, u32 len) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); |
|
unsigned int i; |
|
int ret; |
|
|
|
for (i = 0; i < len; i++) { |
|
ret = imx219_write_reg(imx219, regs[i].address, 1, regs[i].val); |
|
if (ret) { |
|
dev_err_ratelimited(&client->dev, |
|
"Failed to write reg 0x%4.4x. error = %d\n", |
|
regs[i].address, ret); |
|
|
|
return ret; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* Get bayer order based on flip setting. */ |
|
static u32 imx219_get_format_code(struct imx219 *imx219, u32 code) |
|
{ |
|
unsigned int i; |
|
|
|
lockdep_assert_held(&imx219->mutex); |
|
|
|
for (i = 0; i < ARRAY_SIZE(codes); i++) |
|
if (codes[i] == code) |
|
break; |
|
|
|
if (i >= ARRAY_SIZE(codes)) |
|
i = 0; |
|
|
|
i = (i & ~3) | (imx219->vflip->val ? 2 : 0) | |
|
(imx219->hflip->val ? 1 : 0); |
|
|
|
return codes[i]; |
|
} |
|
|
|
static void imx219_set_default_format(struct imx219 *imx219) |
|
{ |
|
struct v4l2_mbus_framefmt *fmt; |
|
|
|
fmt = &imx219->fmt; |
|
fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10; |
|
fmt->colorspace = V4L2_COLORSPACE_SRGB; |
|
fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace); |
|
fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, |
|
fmt->colorspace, |
|
fmt->ycbcr_enc); |
|
fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace); |
|
fmt->width = supported_modes[0].width; |
|
fmt->height = supported_modes[0].height; |
|
fmt->field = V4L2_FIELD_NONE; |
|
} |
|
|
|
static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) |
|
{ |
|
struct imx219 *imx219 = to_imx219(sd); |
|
struct v4l2_mbus_framefmt *try_fmt = |
|
v4l2_subdev_get_try_format(sd, fh->pad, 0); |
|
struct v4l2_rect *try_crop; |
|
|
|
mutex_lock(&imx219->mutex); |
|
|
|
/* Initialize try_fmt */ |
|
try_fmt->width = supported_modes[0].width; |
|
try_fmt->height = supported_modes[0].height; |
|
try_fmt->code = imx219_get_format_code(imx219, |
|
MEDIA_BUS_FMT_SRGGB10_1X10); |
|
try_fmt->field = V4L2_FIELD_NONE; |
|
|
|
/* Initialize try_crop rectangle. */ |
|
try_crop = v4l2_subdev_get_try_crop(sd, fh->pad, 0); |
|
try_crop->top = IMX219_PIXEL_ARRAY_TOP; |
|
try_crop->left = IMX219_PIXEL_ARRAY_LEFT; |
|
try_crop->width = IMX219_PIXEL_ARRAY_WIDTH; |
|
try_crop->height = IMX219_PIXEL_ARRAY_HEIGHT; |
|
|
|
mutex_unlock(&imx219->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static int imx219_set_ctrl(struct v4l2_ctrl *ctrl) |
|
{ |
|
struct imx219 *imx219 = |
|
container_of(ctrl->handler, struct imx219, ctrl_handler); |
|
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); |
|
int ret; |
|
|
|
if (ctrl->id == V4L2_CID_VBLANK) { |
|
int exposure_max, exposure_def; |
|
|
|
/* Update max exposure while meeting expected vblanking */ |
|
exposure_max = imx219->mode->height + ctrl->val - 4; |
|
exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ? |
|
exposure_max : IMX219_EXPOSURE_DEFAULT; |
|
__v4l2_ctrl_modify_range(imx219->exposure, |
|
imx219->exposure->minimum, |
|
exposure_max, imx219->exposure->step, |
|
exposure_def); |
|
} |
|
|
|
/* |
|
* Applying V4L2 control value only happens |
|
* when power is up for streaming |
|
*/ |
|
if (pm_runtime_get_if_in_use(&client->dev) == 0) |
|
return 0; |
|
|
|
switch (ctrl->id) { |
|
case V4L2_CID_ANALOGUE_GAIN: |
|
ret = imx219_write_reg(imx219, IMX219_REG_ANALOG_GAIN, |
|
IMX219_REG_VALUE_08BIT, ctrl->val); |
|
break; |
|
case V4L2_CID_EXPOSURE: |
|
ret = imx219_write_reg(imx219, IMX219_REG_EXPOSURE, |
|
IMX219_REG_VALUE_16BIT, ctrl->val); |
|
break; |
|
case V4L2_CID_DIGITAL_GAIN: |
|
ret = imx219_write_reg(imx219, IMX219_REG_DIGITAL_GAIN, |
|
IMX219_REG_VALUE_16BIT, ctrl->val); |
|
break; |
|
case V4L2_CID_TEST_PATTERN: |
|
ret = imx219_write_reg(imx219, IMX219_REG_TEST_PATTERN, |
|
IMX219_REG_VALUE_16BIT, |
|
imx219_test_pattern_val[ctrl->val]); |
|
break; |
|
case V4L2_CID_HFLIP: |
|
case V4L2_CID_VFLIP: |
|
ret = imx219_write_reg(imx219, IMX219_REG_ORIENTATION, 1, |
|
imx219->hflip->val | |
|
imx219->vflip->val << 1); |
|
break; |
|
case V4L2_CID_VBLANK: |
|
ret = imx219_write_reg(imx219, IMX219_REG_VTS, |
|
IMX219_REG_VALUE_16BIT, |
|
imx219->mode->height + ctrl->val); |
|
break; |
|
case V4L2_CID_TEST_PATTERN_RED: |
|
ret = imx219_write_reg(imx219, IMX219_REG_TESTP_RED, |
|
IMX219_REG_VALUE_16BIT, ctrl->val); |
|
break; |
|
case V4L2_CID_TEST_PATTERN_GREENR: |
|
ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENR, |
|
IMX219_REG_VALUE_16BIT, ctrl->val); |
|
break; |
|
case V4L2_CID_TEST_PATTERN_BLUE: |
|
ret = imx219_write_reg(imx219, IMX219_REG_TESTP_BLUE, |
|
IMX219_REG_VALUE_16BIT, ctrl->val); |
|
break; |
|
case V4L2_CID_TEST_PATTERN_GREENB: |
|
ret = imx219_write_reg(imx219, IMX219_REG_TESTP_GREENB, |
|
IMX219_REG_VALUE_16BIT, ctrl->val); |
|
break; |
|
default: |
|
dev_info(&client->dev, |
|
"ctrl(id:0x%x,val:0x%x) is not handled\n", |
|
ctrl->id, ctrl->val); |
|
ret = -EINVAL; |
|
break; |
|
} |
|
|
|
pm_runtime_put(&client->dev); |
|
|
|
return ret; |
|
} |
|
|
|
static const struct v4l2_ctrl_ops imx219_ctrl_ops = { |
|
.s_ctrl = imx219_set_ctrl, |
|
}; |
|
|
|
static int imx219_enum_mbus_code(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_mbus_code_enum *code) |
|
{ |
|
struct imx219 *imx219 = to_imx219(sd); |
|
|
|
if (code->index >= (ARRAY_SIZE(codes) / 4)) |
|
return -EINVAL; |
|
|
|
mutex_lock(&imx219->mutex); |
|
code->code = imx219_get_format_code(imx219, codes[code->index * 4]); |
|
mutex_unlock(&imx219->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static int imx219_enum_frame_size(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_frame_size_enum *fse) |
|
{ |
|
struct imx219 *imx219 = to_imx219(sd); |
|
u32 code; |
|
|
|
if (fse->index >= ARRAY_SIZE(supported_modes)) |
|
return -EINVAL; |
|
|
|
mutex_lock(&imx219->mutex); |
|
code = imx219_get_format_code(imx219, fse->code); |
|
mutex_unlock(&imx219->mutex); |
|
if (fse->code != code) |
|
return -EINVAL; |
|
|
|
fse->min_width = supported_modes[fse->index].width; |
|
fse->max_width = fse->min_width; |
|
fse->min_height = supported_modes[fse->index].height; |
|
fse->max_height = fse->min_height; |
|
|
|
return 0; |
|
} |
|
|
|
static void imx219_reset_colorspace(struct v4l2_mbus_framefmt *fmt) |
|
{ |
|
fmt->colorspace = V4L2_COLORSPACE_SRGB; |
|
fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace); |
|
fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true, |
|
fmt->colorspace, |
|
fmt->ycbcr_enc); |
|
fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace); |
|
} |
|
|
|
static void imx219_update_pad_format(struct imx219 *imx219, |
|
const struct imx219_mode *mode, |
|
struct v4l2_subdev_format *fmt) |
|
{ |
|
fmt->format.width = mode->width; |
|
fmt->format.height = mode->height; |
|
fmt->format.field = V4L2_FIELD_NONE; |
|
imx219_reset_colorspace(&fmt->format); |
|
} |
|
|
|
static int __imx219_get_pad_format(struct imx219 *imx219, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_format *fmt) |
|
{ |
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
|
struct v4l2_mbus_framefmt *try_fmt = |
|
v4l2_subdev_get_try_format(&imx219->sd, cfg, fmt->pad); |
|
/* update the code which could change due to vflip or hflip: */ |
|
try_fmt->code = imx219_get_format_code(imx219, try_fmt->code); |
|
fmt->format = *try_fmt; |
|
} else { |
|
imx219_update_pad_format(imx219, imx219->mode, fmt); |
|
fmt->format.code = imx219_get_format_code(imx219, |
|
imx219->fmt.code); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int imx219_get_pad_format(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_format *fmt) |
|
{ |
|
struct imx219 *imx219 = to_imx219(sd); |
|
int ret; |
|
|
|
mutex_lock(&imx219->mutex); |
|
ret = __imx219_get_pad_format(imx219, cfg, fmt); |
|
mutex_unlock(&imx219->mutex); |
|
|
|
return ret; |
|
} |
|
|
|
static int imx219_set_pad_format(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_format *fmt) |
|
{ |
|
struct imx219 *imx219 = to_imx219(sd); |
|
const struct imx219_mode *mode; |
|
struct v4l2_mbus_framefmt *framefmt; |
|
int exposure_max, exposure_def, hblank; |
|
unsigned int i; |
|
|
|
mutex_lock(&imx219->mutex); |
|
|
|
for (i = 0; i < ARRAY_SIZE(codes); i++) |
|
if (codes[i] == fmt->format.code) |
|
break; |
|
if (i >= ARRAY_SIZE(codes)) |
|
i = 0; |
|
|
|
/* Bayer order varies with flips */ |
|
fmt->format.code = imx219_get_format_code(imx219, codes[i]); |
|
|
|
mode = v4l2_find_nearest_size(supported_modes, |
|
ARRAY_SIZE(supported_modes), |
|
width, height, |
|
fmt->format.width, fmt->format.height); |
|
imx219_update_pad_format(imx219, mode, fmt); |
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
|
framefmt = v4l2_subdev_get_try_format(sd, cfg, fmt->pad); |
|
*framefmt = fmt->format; |
|
} else if (imx219->mode != mode || |
|
imx219->fmt.code != fmt->format.code) { |
|
imx219->fmt = fmt->format; |
|
imx219->mode = mode; |
|
/* Update limits and set FPS to default */ |
|
__v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN, |
|
IMX219_VTS_MAX - mode->height, 1, |
|
mode->vts_def - mode->height); |
|
__v4l2_ctrl_s_ctrl(imx219->vblank, |
|
mode->vts_def - mode->height); |
|
/* Update max exposure while meeting expected vblanking */ |
|
exposure_max = mode->vts_def - 4; |
|
exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ? |
|
exposure_max : IMX219_EXPOSURE_DEFAULT; |
|
__v4l2_ctrl_modify_range(imx219->exposure, |
|
imx219->exposure->minimum, |
|
exposure_max, imx219->exposure->step, |
|
exposure_def); |
|
/* |
|
* Currently PPL is fixed to IMX219_PPL_DEFAULT, so hblank |
|
* depends on mode->width only, and is not changeble in any |
|
* way other than changing the mode. |
|
*/ |
|
hblank = IMX219_PPL_DEFAULT - mode->width; |
|
__v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank, 1, |
|
hblank); |
|
} |
|
|
|
mutex_unlock(&imx219->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static int imx219_set_framefmt(struct imx219 *imx219) |
|
{ |
|
switch (imx219->fmt.code) { |
|
case MEDIA_BUS_FMT_SRGGB8_1X8: |
|
case MEDIA_BUS_FMT_SGRBG8_1X8: |
|
case MEDIA_BUS_FMT_SGBRG8_1X8: |
|
case MEDIA_BUS_FMT_SBGGR8_1X8: |
|
return imx219_write_regs(imx219, raw8_framefmt_regs, |
|
ARRAY_SIZE(raw8_framefmt_regs)); |
|
|
|
case MEDIA_BUS_FMT_SRGGB10_1X10: |
|
case MEDIA_BUS_FMT_SGRBG10_1X10: |
|
case MEDIA_BUS_FMT_SGBRG10_1X10: |
|
case MEDIA_BUS_FMT_SBGGR10_1X10: |
|
return imx219_write_regs(imx219, raw10_framefmt_regs, |
|
ARRAY_SIZE(raw10_framefmt_regs)); |
|
} |
|
|
|
return -EINVAL; |
|
} |
|
|
|
static const struct v4l2_rect * |
|
__imx219_get_pad_crop(struct imx219 *imx219, struct v4l2_subdev_pad_config *cfg, |
|
unsigned int pad, enum v4l2_subdev_format_whence which) |
|
{ |
|
switch (which) { |
|
case V4L2_SUBDEV_FORMAT_TRY: |
|
return v4l2_subdev_get_try_crop(&imx219->sd, cfg, pad); |
|
case V4L2_SUBDEV_FORMAT_ACTIVE: |
|
return &imx219->mode->crop; |
|
} |
|
|
|
return NULL; |
|
} |
|
|
|
static int imx219_get_selection(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_selection *sel) |
|
{ |
|
switch (sel->target) { |
|
case V4L2_SEL_TGT_CROP: { |
|
struct imx219 *imx219 = to_imx219(sd); |
|
|
|
mutex_lock(&imx219->mutex); |
|
sel->r = *__imx219_get_pad_crop(imx219, cfg, sel->pad, |
|
sel->which); |
|
mutex_unlock(&imx219->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
case V4L2_SEL_TGT_NATIVE_SIZE: |
|
sel->r.top = 0; |
|
sel->r.left = 0; |
|
sel->r.width = IMX219_NATIVE_WIDTH; |
|
sel->r.height = IMX219_NATIVE_HEIGHT; |
|
|
|
return 0; |
|
|
|
case V4L2_SEL_TGT_CROP_DEFAULT: |
|
case V4L2_SEL_TGT_CROP_BOUNDS: |
|
sel->r.top = IMX219_PIXEL_ARRAY_TOP; |
|
sel->r.left = IMX219_PIXEL_ARRAY_LEFT; |
|
sel->r.width = IMX219_PIXEL_ARRAY_WIDTH; |
|
sel->r.height = IMX219_PIXEL_ARRAY_HEIGHT; |
|
|
|
return 0; |
|
} |
|
|
|
return -EINVAL; |
|
} |
|
|
|
static int imx219_start_streaming(struct imx219 *imx219) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); |
|
const struct imx219_reg_list *reg_list; |
|
int ret; |
|
|
|
ret = pm_runtime_get_sync(&client->dev); |
|
if (ret < 0) { |
|
pm_runtime_put_noidle(&client->dev); |
|
return ret; |
|
} |
|
|
|
/* Apply default values of current mode */ |
|
reg_list = &imx219->mode->reg_list; |
|
ret = imx219_write_regs(imx219, reg_list->regs, reg_list->num_of_regs); |
|
if (ret) { |
|
dev_err(&client->dev, "%s failed to set mode\n", __func__); |
|
goto err_rpm_put; |
|
} |
|
|
|
ret = imx219_set_framefmt(imx219); |
|
if (ret) { |
|
dev_err(&client->dev, "%s failed to set frame format: %d\n", |
|
__func__, ret); |
|
goto err_rpm_put; |
|
} |
|
|
|
/* Apply customized values from user */ |
|
ret = __v4l2_ctrl_handler_setup(imx219->sd.ctrl_handler); |
|
if (ret) |
|
goto err_rpm_put; |
|
|
|
/* set stream on register */ |
|
ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, |
|
IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING); |
|
if (ret) |
|
goto err_rpm_put; |
|
|
|
/* vflip and hflip cannot change during streaming */ |
|
__v4l2_ctrl_grab(imx219->vflip, true); |
|
__v4l2_ctrl_grab(imx219->hflip, true); |
|
|
|
return 0; |
|
|
|
err_rpm_put: |
|
pm_runtime_put(&client->dev); |
|
return ret; |
|
} |
|
|
|
static void imx219_stop_streaming(struct imx219 *imx219) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); |
|
int ret; |
|
|
|
/* set stream off register */ |
|
ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, |
|
IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY); |
|
if (ret) |
|
dev_err(&client->dev, "%s failed to set stream\n", __func__); |
|
|
|
__v4l2_ctrl_grab(imx219->vflip, false); |
|
__v4l2_ctrl_grab(imx219->hflip, false); |
|
|
|
pm_runtime_put(&client->dev); |
|
} |
|
|
|
static int imx219_set_stream(struct v4l2_subdev *sd, int enable) |
|
{ |
|
struct imx219 *imx219 = to_imx219(sd); |
|
int ret = 0; |
|
|
|
mutex_lock(&imx219->mutex); |
|
if (imx219->streaming == enable) { |
|
mutex_unlock(&imx219->mutex); |
|
return 0; |
|
} |
|
|
|
if (enable) { |
|
/* |
|
* Apply default & customized values |
|
* and then start streaming. |
|
*/ |
|
ret = imx219_start_streaming(imx219); |
|
if (ret) |
|
goto err_unlock; |
|
} else { |
|
imx219_stop_streaming(imx219); |
|
} |
|
|
|
imx219->streaming = enable; |
|
|
|
mutex_unlock(&imx219->mutex); |
|
|
|
return ret; |
|
|
|
err_unlock: |
|
mutex_unlock(&imx219->mutex); |
|
|
|
return ret; |
|
} |
|
|
|
/* Power/clock management functions */ |
|
static int imx219_power_on(struct device *dev) |
|
{ |
|
struct v4l2_subdev *sd = dev_get_drvdata(dev); |
|
struct imx219 *imx219 = to_imx219(sd); |
|
int ret; |
|
|
|
ret = regulator_bulk_enable(IMX219_NUM_SUPPLIES, |
|
imx219->supplies); |
|
if (ret) { |
|
dev_err(dev, "%s: failed to enable regulators\n", |
|
__func__); |
|
return ret; |
|
} |
|
|
|
ret = clk_prepare_enable(imx219->xclk); |
|
if (ret) { |
|
dev_err(dev, "%s: failed to enable clock\n", |
|
__func__); |
|
goto reg_off; |
|
} |
|
|
|
gpiod_set_value_cansleep(imx219->reset_gpio, 1); |
|
usleep_range(IMX219_XCLR_MIN_DELAY_US, |
|
IMX219_XCLR_MIN_DELAY_US + IMX219_XCLR_DELAY_RANGE_US); |
|
|
|
return 0; |
|
|
|
reg_off: |
|
regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies); |
|
|
|
return ret; |
|
} |
|
|
|
static int imx219_power_off(struct device *dev) |
|
{ |
|
struct v4l2_subdev *sd = dev_get_drvdata(dev); |
|
struct imx219 *imx219 = to_imx219(sd); |
|
|
|
gpiod_set_value_cansleep(imx219->reset_gpio, 0); |
|
regulator_bulk_disable(IMX219_NUM_SUPPLIES, imx219->supplies); |
|
clk_disable_unprepare(imx219->xclk); |
|
|
|
return 0; |
|
} |
|
|
|
static int __maybe_unused imx219_suspend(struct device *dev) |
|
{ |
|
struct v4l2_subdev *sd = dev_get_drvdata(dev); |
|
struct imx219 *imx219 = to_imx219(sd); |
|
|
|
if (imx219->streaming) |
|
imx219_stop_streaming(imx219); |
|
|
|
return 0; |
|
} |
|
|
|
static int __maybe_unused imx219_resume(struct device *dev) |
|
{ |
|
struct v4l2_subdev *sd = dev_get_drvdata(dev); |
|
struct imx219 *imx219 = to_imx219(sd); |
|
int ret; |
|
|
|
if (imx219->streaming) { |
|
ret = imx219_start_streaming(imx219); |
|
if (ret) |
|
goto error; |
|
} |
|
|
|
return 0; |
|
|
|
error: |
|
imx219_stop_streaming(imx219); |
|
imx219->streaming = false; |
|
|
|
return ret; |
|
} |
|
|
|
static int imx219_get_regulators(struct imx219 *imx219) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); |
|
unsigned int i; |
|
|
|
for (i = 0; i < IMX219_NUM_SUPPLIES; i++) |
|
imx219->supplies[i].supply = imx219_supply_name[i]; |
|
|
|
return devm_regulator_bulk_get(&client->dev, |
|
IMX219_NUM_SUPPLIES, |
|
imx219->supplies); |
|
} |
|
|
|
/* Verify chip ID */ |
|
static int imx219_identify_module(struct imx219 *imx219) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); |
|
int ret; |
|
u32 val; |
|
|
|
ret = imx219_read_reg(imx219, IMX219_REG_CHIP_ID, |
|
IMX219_REG_VALUE_16BIT, &val); |
|
if (ret) { |
|
dev_err(&client->dev, "failed to read chip id %x\n", |
|
IMX219_CHIP_ID); |
|
return ret; |
|
} |
|
|
|
if (val != IMX219_CHIP_ID) { |
|
dev_err(&client->dev, "chip id mismatch: %x!=%x\n", |
|
IMX219_CHIP_ID, val); |
|
return -EIO; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static const struct v4l2_subdev_core_ops imx219_core_ops = { |
|
.subscribe_event = v4l2_ctrl_subdev_subscribe_event, |
|
.unsubscribe_event = v4l2_event_subdev_unsubscribe, |
|
}; |
|
|
|
static const struct v4l2_subdev_video_ops imx219_video_ops = { |
|
.s_stream = imx219_set_stream, |
|
}; |
|
|
|
static const struct v4l2_subdev_pad_ops imx219_pad_ops = { |
|
.enum_mbus_code = imx219_enum_mbus_code, |
|
.get_fmt = imx219_get_pad_format, |
|
.set_fmt = imx219_set_pad_format, |
|
.get_selection = imx219_get_selection, |
|
.enum_frame_size = imx219_enum_frame_size, |
|
}; |
|
|
|
static const struct v4l2_subdev_ops imx219_subdev_ops = { |
|
.core = &imx219_core_ops, |
|
.video = &imx219_video_ops, |
|
.pad = &imx219_pad_ops, |
|
}; |
|
|
|
static const struct v4l2_subdev_internal_ops imx219_internal_ops = { |
|
.open = imx219_open, |
|
}; |
|
|
|
/* Initialize control handlers */ |
|
static int imx219_init_controls(struct imx219 *imx219) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd); |
|
struct v4l2_ctrl_handler *ctrl_hdlr; |
|
unsigned int height = imx219->mode->height; |
|
struct v4l2_fwnode_device_properties props; |
|
int exposure_max, exposure_def, hblank; |
|
int i, ret; |
|
|
|
ctrl_hdlr = &imx219->ctrl_handler; |
|
ret = v4l2_ctrl_handler_init(ctrl_hdlr, 12); |
|
if (ret) |
|
return ret; |
|
|
|
mutex_init(&imx219->mutex); |
|
ctrl_hdlr->lock = &imx219->mutex; |
|
|
|
/* By default, PIXEL_RATE is read only */ |
|
imx219->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, |
|
V4L2_CID_PIXEL_RATE, |
|
IMX219_PIXEL_RATE, |
|
IMX219_PIXEL_RATE, 1, |
|
IMX219_PIXEL_RATE); |
|
|
|
imx219->link_freq = |
|
v4l2_ctrl_new_int_menu(ctrl_hdlr, &imx219_ctrl_ops, |
|
V4L2_CID_LINK_FREQ, |
|
ARRAY_SIZE(imx219_link_freq_menu) - 1, 0, |
|
imx219_link_freq_menu); |
|
if (imx219->link_freq) |
|
imx219->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
|
|
|
/* Initial vblank/hblank/exposure parameters based on current mode */ |
|
imx219->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, |
|
V4L2_CID_VBLANK, IMX219_VBLANK_MIN, |
|
IMX219_VTS_MAX - height, 1, |
|
imx219->mode->vts_def - height); |
|
hblank = IMX219_PPL_DEFAULT - imx219->mode->width; |
|
imx219->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, |
|
V4L2_CID_HBLANK, hblank, hblank, |
|
1, hblank); |
|
if (imx219->hblank) |
|
imx219->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
|
exposure_max = imx219->mode->vts_def - 4; |
|
exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ? |
|
exposure_max : IMX219_EXPOSURE_DEFAULT; |
|
imx219->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, |
|
V4L2_CID_EXPOSURE, |
|
IMX219_EXPOSURE_MIN, exposure_max, |
|
IMX219_EXPOSURE_STEP, |
|
exposure_def); |
|
|
|
v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, |
|
IMX219_ANA_GAIN_MIN, IMX219_ANA_GAIN_MAX, |
|
IMX219_ANA_GAIN_STEP, IMX219_ANA_GAIN_DEFAULT); |
|
|
|
v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, V4L2_CID_DIGITAL_GAIN, |
|
IMX219_DGTL_GAIN_MIN, IMX219_DGTL_GAIN_MAX, |
|
IMX219_DGTL_GAIN_STEP, IMX219_DGTL_GAIN_DEFAULT); |
|
|
|
imx219->hflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, |
|
V4L2_CID_HFLIP, 0, 1, 1, 0); |
|
if (imx219->hflip) |
|
imx219->hflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; |
|
|
|
imx219->vflip = v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, |
|
V4L2_CID_VFLIP, 0, 1, 1, 0); |
|
if (imx219->vflip) |
|
imx219->vflip->flags |= V4L2_CTRL_FLAG_MODIFY_LAYOUT; |
|
|
|
v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &imx219_ctrl_ops, |
|
V4L2_CID_TEST_PATTERN, |
|
ARRAY_SIZE(imx219_test_pattern_menu) - 1, |
|
0, 0, imx219_test_pattern_menu); |
|
for (i = 0; i < 4; i++) { |
|
/* |
|
* The assumption is that |
|
* V4L2_CID_TEST_PATTERN_GREENR == V4L2_CID_TEST_PATTERN_RED + 1 |
|
* V4L2_CID_TEST_PATTERN_BLUE == V4L2_CID_TEST_PATTERN_RED + 2 |
|
* V4L2_CID_TEST_PATTERN_GREENB == V4L2_CID_TEST_PATTERN_RED + 3 |
|
*/ |
|
v4l2_ctrl_new_std(ctrl_hdlr, &imx219_ctrl_ops, |
|
V4L2_CID_TEST_PATTERN_RED + i, |
|
IMX219_TESTP_COLOUR_MIN, |
|
IMX219_TESTP_COLOUR_MAX, |
|
IMX219_TESTP_COLOUR_STEP, |
|
IMX219_TESTP_COLOUR_MAX); |
|
/* The "Solid color" pattern is white by default */ |
|
} |
|
|
|
if (ctrl_hdlr->error) { |
|
ret = ctrl_hdlr->error; |
|
dev_err(&client->dev, "%s control init failed (%d)\n", |
|
__func__, ret); |
|
goto error; |
|
} |
|
|
|
ret = v4l2_fwnode_device_parse(&client->dev, &props); |
|
if (ret) |
|
goto error; |
|
|
|
ret = v4l2_ctrl_new_fwnode_properties(ctrl_hdlr, &imx219_ctrl_ops, |
|
&props); |
|
if (ret) |
|
goto error; |
|
|
|
imx219->sd.ctrl_handler = ctrl_hdlr; |
|
|
|
return 0; |
|
|
|
error: |
|
v4l2_ctrl_handler_free(ctrl_hdlr); |
|
mutex_destroy(&imx219->mutex); |
|
|
|
return ret; |
|
} |
|
|
|
static void imx219_free_controls(struct imx219 *imx219) |
|
{ |
|
v4l2_ctrl_handler_free(imx219->sd.ctrl_handler); |
|
mutex_destroy(&imx219->mutex); |
|
} |
|
|
|
static int imx219_check_hwcfg(struct device *dev) |
|
{ |
|
struct fwnode_handle *endpoint; |
|
struct v4l2_fwnode_endpoint ep_cfg = { |
|
.bus_type = V4L2_MBUS_CSI2_DPHY |
|
}; |
|
int ret = -EINVAL; |
|
|
|
endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL); |
|
if (!endpoint) { |
|
dev_err(dev, "endpoint node not found\n"); |
|
return -EINVAL; |
|
} |
|
|
|
if (v4l2_fwnode_endpoint_alloc_parse(endpoint, &ep_cfg)) { |
|
dev_err(dev, "could not parse endpoint\n"); |
|
goto error_out; |
|
} |
|
|
|
/* Check the number of MIPI CSI2 data lanes */ |
|
if (ep_cfg.bus.mipi_csi2.num_data_lanes != 2) { |
|
dev_err(dev, "only 2 data lanes are currently supported\n"); |
|
goto error_out; |
|
} |
|
|
|
/* Check the link frequency set in device tree */ |
|
if (!ep_cfg.nr_of_link_frequencies) { |
|
dev_err(dev, "link-frequency property not found in DT\n"); |
|
goto error_out; |
|
} |
|
|
|
if (ep_cfg.nr_of_link_frequencies != 1 || |
|
ep_cfg.link_frequencies[0] != IMX219_DEFAULT_LINK_FREQ) { |
|
dev_err(dev, "Link frequency not supported: %lld\n", |
|
ep_cfg.link_frequencies[0]); |
|
goto error_out; |
|
} |
|
|
|
ret = 0; |
|
|
|
error_out: |
|
v4l2_fwnode_endpoint_free(&ep_cfg); |
|
fwnode_handle_put(endpoint); |
|
|
|
return ret; |
|
} |
|
|
|
static int imx219_probe(struct i2c_client *client) |
|
{ |
|
struct device *dev = &client->dev; |
|
struct imx219 *imx219; |
|
int ret; |
|
|
|
imx219 = devm_kzalloc(&client->dev, sizeof(*imx219), GFP_KERNEL); |
|
if (!imx219) |
|
return -ENOMEM; |
|
|
|
v4l2_i2c_subdev_init(&imx219->sd, client, &imx219_subdev_ops); |
|
|
|
/* Check the hardware configuration in device tree */ |
|
if (imx219_check_hwcfg(dev)) |
|
return -EINVAL; |
|
|
|
/* Get system clock (xclk) */ |
|
imx219->xclk = devm_clk_get(dev, NULL); |
|
if (IS_ERR(imx219->xclk)) { |
|
dev_err(dev, "failed to get xclk\n"); |
|
return PTR_ERR(imx219->xclk); |
|
} |
|
|
|
imx219->xclk_freq = clk_get_rate(imx219->xclk); |
|
if (imx219->xclk_freq != IMX219_XCLK_FREQ) { |
|
dev_err(dev, "xclk frequency not supported: %d Hz\n", |
|
imx219->xclk_freq); |
|
return -EINVAL; |
|
} |
|
|
|
ret = imx219_get_regulators(imx219); |
|
if (ret) { |
|
dev_err(dev, "failed to get regulators\n"); |
|
return ret; |
|
} |
|
|
|
/* Request optional enable pin */ |
|
imx219->reset_gpio = devm_gpiod_get_optional(dev, "reset", |
|
GPIOD_OUT_HIGH); |
|
|
|
/* |
|
* The sensor must be powered for imx219_identify_module() |
|
* to be able to read the CHIP_ID register |
|
*/ |
|
ret = imx219_power_on(dev); |
|
if (ret) |
|
return ret; |
|
|
|
ret = imx219_identify_module(imx219); |
|
if (ret) |
|
goto error_power_off; |
|
|
|
/* Set default mode to max resolution */ |
|
imx219->mode = &supported_modes[0]; |
|
|
|
/* sensor doesn't enter LP-11 state upon power up until and unless |
|
* streaming is started, so upon power up switch the modes to: |
|
* streaming -> standby |
|
*/ |
|
ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, |
|
IMX219_REG_VALUE_08BIT, IMX219_MODE_STREAMING); |
|
if (ret < 0) |
|
goto error_power_off; |
|
usleep_range(100, 110); |
|
|
|
/* put sensor back to standby mode */ |
|
ret = imx219_write_reg(imx219, IMX219_REG_MODE_SELECT, |
|
IMX219_REG_VALUE_08BIT, IMX219_MODE_STANDBY); |
|
if (ret < 0) |
|
goto error_power_off; |
|
usleep_range(100, 110); |
|
|
|
ret = imx219_init_controls(imx219); |
|
if (ret) |
|
goto error_power_off; |
|
|
|
/* Initialize subdev */ |
|
imx219->sd.internal_ops = &imx219_internal_ops; |
|
imx219->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | |
|
V4L2_SUBDEV_FL_HAS_EVENTS; |
|
imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; |
|
|
|
/* Initialize source pad */ |
|
imx219->pad.flags = MEDIA_PAD_FL_SOURCE; |
|
|
|
/* Initialize default format */ |
|
imx219_set_default_format(imx219); |
|
|
|
ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad); |
|
if (ret) { |
|
dev_err(dev, "failed to init entity pads: %d\n", ret); |
|
goto error_handler_free; |
|
} |
|
|
|
ret = v4l2_async_register_subdev_sensor_common(&imx219->sd); |
|
if (ret < 0) { |
|
dev_err(dev, "failed to register sensor sub-device: %d\n", ret); |
|
goto error_media_entity; |
|
} |
|
|
|
/* Enable runtime PM and turn off the device */ |
|
pm_runtime_set_active(dev); |
|
pm_runtime_enable(dev); |
|
pm_runtime_idle(dev); |
|
|
|
return 0; |
|
|
|
error_media_entity: |
|
media_entity_cleanup(&imx219->sd.entity); |
|
|
|
error_handler_free: |
|
imx219_free_controls(imx219); |
|
|
|
error_power_off: |
|
imx219_power_off(dev); |
|
|
|
return ret; |
|
} |
|
|
|
static int imx219_remove(struct i2c_client *client) |
|
{ |
|
struct v4l2_subdev *sd = i2c_get_clientdata(client); |
|
struct imx219 *imx219 = to_imx219(sd); |
|
|
|
v4l2_async_unregister_subdev(sd); |
|
media_entity_cleanup(&sd->entity); |
|
imx219_free_controls(imx219); |
|
|
|
pm_runtime_disable(&client->dev); |
|
if (!pm_runtime_status_suspended(&client->dev)) |
|
imx219_power_off(&client->dev); |
|
pm_runtime_set_suspended(&client->dev); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct of_device_id imx219_dt_ids[] = { |
|
{ .compatible = "sony,imx219" }, |
|
{ /* sentinel */ } |
|
}; |
|
MODULE_DEVICE_TABLE(of, imx219_dt_ids); |
|
|
|
static const struct dev_pm_ops imx219_pm_ops = { |
|
SET_SYSTEM_SLEEP_PM_OPS(imx219_suspend, imx219_resume) |
|
SET_RUNTIME_PM_OPS(imx219_power_off, imx219_power_on, NULL) |
|
}; |
|
|
|
static struct i2c_driver imx219_i2c_driver = { |
|
.driver = { |
|
.name = "imx219", |
|
.of_match_table = imx219_dt_ids, |
|
.pm = &imx219_pm_ops, |
|
}, |
|
.probe_new = imx219_probe, |
|
.remove = imx219_remove, |
|
}; |
|
|
|
module_i2c_driver(imx219_i2c_driver); |
|
|
|
MODULE_AUTHOR("Dave Stevenson <[email protected]"); |
|
MODULE_DESCRIPTION("Sony IMX219 sensor driver"); |
|
MODULE_LICENSE("GPL v2");
|
|
|