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1020 lines
24 KiB
1020 lines
24 KiB
// SPDX-License-Identifier: GPL-2.0 |
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// Copyright (c) 2020 Intel Corporation. |
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#include <asm/unaligned.h> |
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#include <linux/acpi.h> |
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#include <linux/delay.h> |
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#include <linux/i2c.h> |
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#include <linux/module.h> |
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#include <linux/pm_runtime.h> |
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#include <media/v4l2-ctrls.h> |
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#include <media/v4l2-device.h> |
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#include <media/v4l2-fwnode.h> |
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|
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#define OV9734_LINK_FREQ_180MHZ 180000000ULL |
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#define OV9734_SCLK 36000000LL |
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#define OV9734_MCLK 19200000 |
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/* ov9734 only support 1-lane mipi output */ |
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#define OV9734_DATA_LANES 1 |
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#define OV9734_RGB_DEPTH 10 |
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|
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#define OV9734_REG_CHIP_ID 0x300a |
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#define OV9734_CHIP_ID 0x9734 |
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|
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#define OV9734_REG_MODE_SELECT 0x0100 |
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#define OV9734_MODE_STANDBY 0x00 |
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#define OV9734_MODE_STREAMING 0x01 |
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|
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/* vertical-timings from sensor */ |
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#define OV9734_REG_VTS 0x380e |
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#define OV9734_VTS_30FPS 0x0322 |
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#define OV9734_VTS_30FPS_MIN 0x0322 |
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#define OV9734_VTS_MAX 0x7fff |
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|
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/* horizontal-timings from sensor */ |
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#define OV9734_REG_HTS 0x380c |
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|
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/* Exposure controls from sensor */ |
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#define OV9734_REG_EXPOSURE 0x3500 |
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#define OV9734_EXPOSURE_MIN 4 |
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#define OV9734_EXPOSURE_MAX_MARGIN 4 |
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#define OV9734_EXPOSURE_STEP 1 |
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|
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/* Analog gain controls from sensor */ |
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#define OV9734_REG_ANALOG_GAIN 0x350a |
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#define OV9734_ANAL_GAIN_MIN 16 |
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#define OV9734_ANAL_GAIN_MAX 248 |
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#define OV9734_ANAL_GAIN_STEP 1 |
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|
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/* Digital gain controls from sensor */ |
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#define OV9734_REG_MWB_R_GAIN 0x5180 |
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#define OV9734_REG_MWB_G_GAIN 0x5182 |
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#define OV9734_REG_MWB_B_GAIN 0x5184 |
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#define OV9734_DGTL_GAIN_MIN 256 |
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#define OV9734_DGTL_GAIN_MAX 1023 |
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#define OV9734_DGTL_GAIN_STEP 1 |
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#define OV9734_DGTL_GAIN_DEFAULT 256 |
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|
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/* Test Pattern Control */ |
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#define OV9734_REG_TEST_PATTERN 0x5080 |
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#define OV9734_TEST_PATTERN_ENABLE BIT(7) |
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#define OV9734_TEST_PATTERN_BAR_SHIFT 2 |
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enum { |
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OV9734_LINK_FREQ_180MHZ_INDEX, |
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}; |
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struct ov9734_reg { |
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u16 address; |
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u8 val; |
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}; |
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struct ov9734_reg_list { |
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u32 num_of_regs; |
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const struct ov9734_reg *regs; |
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}; |
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struct ov9734_link_freq_config { |
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const struct ov9734_reg_list reg_list; |
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}; |
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struct ov9734_mode { |
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/* Frame width in pixels */ |
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u32 width; |
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/* Frame height in pixels */ |
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u32 height; |
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/* Horizontal timining size */ |
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u32 hts; |
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/* Default vertical timining size */ |
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u32 vts_def; |
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/* Min vertical timining size */ |
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u32 vts_min; |
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/* Link frequency needed for this resolution */ |
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u32 link_freq_index; |
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|
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/* Sensor register settings for this resolution */ |
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const struct ov9734_reg_list reg_list; |
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}; |
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static const struct ov9734_reg mipi_data_rate_360mbps[] = { |
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{0x3030, 0x19}, |
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{0x3080, 0x02}, |
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{0x3081, 0x4b}, |
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{0x3082, 0x04}, |
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{0x3083, 0x00}, |
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{0x3084, 0x02}, |
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{0x3085, 0x01}, |
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{0x3086, 0x01}, |
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{0x3089, 0x01}, |
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{0x308a, 0x00}, |
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{0x301e, 0x15}, |
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{0x3103, 0x01}, |
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}; |
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static const struct ov9734_reg mode_1296x734_regs[] = { |
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{0x3001, 0x00}, |
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{0x3002, 0x00}, |
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{0x3007, 0x00}, |
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{0x3010, 0x00}, |
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{0x3011, 0x08}, |
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{0x3014, 0x22}, |
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{0x3600, 0x55}, |
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{0x3601, 0x02}, |
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{0x3605, 0x22}, |
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{0x3611, 0xe7}, |
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{0x3654, 0x10}, |
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{0x3655, 0x77}, |
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{0x3656, 0x77}, |
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{0x3657, 0x07}, |
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{0x3658, 0x22}, |
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{0x3659, 0x22}, |
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{0x365a, 0x02}, |
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{0x3784, 0x05}, |
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{0x3785, 0x55}, |
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{0x37c0, 0x07}, |
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{0x3800, 0x00}, |
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{0x3801, 0x04}, |
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{0x3802, 0x00}, |
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{0x3803, 0x04}, |
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{0x3804, 0x05}, |
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{0x3805, 0x0b}, |
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{0x3806, 0x02}, |
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{0x3807, 0xdb}, |
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{0x3808, 0x05}, |
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{0x3809, 0x00}, |
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{0x380a, 0x02}, |
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{0x380b, 0xd0}, |
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{0x380c, 0x05}, |
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{0x380d, 0xc6}, |
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{0x380e, 0x03}, |
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{0x380f, 0x22}, |
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{0x3810, 0x00}, |
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{0x3811, 0x04}, |
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{0x3812, 0x00}, |
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{0x3813, 0x04}, |
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{0x3816, 0x00}, |
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{0x3817, 0x00}, |
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{0x3818, 0x00}, |
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{0x3819, 0x04}, |
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{0x3820, 0x18}, |
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{0x3821, 0x00}, |
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{0x382c, 0x06}, |
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{0x3500, 0x00}, |
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{0x3501, 0x31}, |
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{0x3502, 0x00}, |
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{0x3503, 0x03}, |
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{0x3504, 0x00}, |
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{0x3505, 0x00}, |
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{0x3509, 0x10}, |
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{0x350a, 0x00}, |
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{0x350b, 0x40}, |
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{0x3d00, 0x00}, |
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{0x3d01, 0x00}, |
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{0x3d02, 0x00}, |
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{0x3d03, 0x00}, |
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{0x3d04, 0x00}, |
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{0x3d05, 0x00}, |
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{0x3d06, 0x00}, |
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{0x3d07, 0x00}, |
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{0x3d08, 0x00}, |
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{0x3d09, 0x00}, |
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{0x3d0a, 0x00}, |
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{0x3d0b, 0x00}, |
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{0x3d0c, 0x00}, |
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{0x3d0d, 0x00}, |
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{0x3d0e, 0x00}, |
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{0x3d0f, 0x00}, |
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{0x3d80, 0x00}, |
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{0x3d81, 0x00}, |
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{0x3d82, 0x38}, |
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{0x3d83, 0xa4}, |
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{0x3d84, 0x00}, |
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{0x3d85, 0x00}, |
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{0x3d86, 0x1f}, |
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{0x3d87, 0x03}, |
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{0x3d8b, 0x00}, |
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{0x3d8f, 0x00}, |
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{0x4001, 0xe0}, |
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{0x4009, 0x0b}, |
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{0x4300, 0x03}, |
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{0x4301, 0xff}, |
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{0x4304, 0x00}, |
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{0x4305, 0x00}, |
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{0x4309, 0x00}, |
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{0x4600, 0x00}, |
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{0x4601, 0x80}, |
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{0x4800, 0x00}, |
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{0x4805, 0x00}, |
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{0x4821, 0x50}, |
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{0x4823, 0x50}, |
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{0x4837, 0x2d}, |
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{0x4a00, 0x00}, |
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{0x4f00, 0x80}, |
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{0x4f01, 0x10}, |
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{0x4f02, 0x00}, |
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{0x4f03, 0x00}, |
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{0x4f04, 0x00}, |
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{0x4f05, 0x00}, |
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{0x4f06, 0x00}, |
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{0x4f07, 0x00}, |
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{0x4f08, 0x00}, |
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{0x4f09, 0x00}, |
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{0x5000, 0x2f}, |
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{0x500c, 0x00}, |
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{0x500d, 0x00}, |
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{0x500e, 0x00}, |
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{0x500f, 0x00}, |
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{0x5010, 0x00}, |
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{0x5011, 0x00}, |
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{0x5012, 0x00}, |
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{0x5013, 0x00}, |
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{0x5014, 0x00}, |
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{0x5015, 0x00}, |
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{0x5016, 0x00}, |
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{0x5017, 0x00}, |
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{0x5080, 0x00}, |
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{0x5180, 0x01}, |
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{0x5181, 0x00}, |
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{0x5182, 0x01}, |
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{0x5183, 0x00}, |
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{0x5184, 0x01}, |
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{0x5185, 0x00}, |
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{0x5708, 0x06}, |
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{0x380f, 0x2a}, |
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{0x5780, 0x3e}, |
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{0x5781, 0x0f}, |
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{0x5782, 0x44}, |
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{0x5783, 0x02}, |
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{0x5784, 0x01}, |
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{0x5785, 0x01}, |
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{0x5786, 0x00}, |
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{0x5787, 0x04}, |
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{0x5788, 0x02}, |
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{0x5789, 0x0f}, |
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{0x578a, 0xfd}, |
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{0x578b, 0xf5}, |
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{0x578c, 0xf5}, |
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{0x578d, 0x03}, |
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{0x578e, 0x08}, |
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{0x578f, 0x0c}, |
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{0x5790, 0x08}, |
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{0x5791, 0x04}, |
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{0x5792, 0x00}, |
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{0x5793, 0x52}, |
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{0x5794, 0xa3}, |
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{0x5000, 0x3f}, |
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{0x3801, 0x00}, |
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{0x3803, 0x00}, |
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{0x3805, 0x0f}, |
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{0x3807, 0xdf}, |
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{0x3809, 0x10}, |
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{0x380b, 0xde}, |
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{0x3811, 0x00}, |
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{0x3813, 0x01}, |
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}; |
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static const char * const ov9734_test_pattern_menu[] = { |
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"Disabled", |
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"Standard Color Bar", |
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"Top-Bottom Darker Color Bar", |
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"Right-Left Darker Color Bar", |
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"Bottom-Top Darker Color Bar", |
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}; |
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static const s64 link_freq_menu_items[] = { |
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OV9734_LINK_FREQ_180MHZ, |
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}; |
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static const struct ov9734_link_freq_config link_freq_configs[] = { |
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[OV9734_LINK_FREQ_180MHZ_INDEX] = { |
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.reg_list = { |
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.num_of_regs = ARRAY_SIZE(mipi_data_rate_360mbps), |
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.regs = mipi_data_rate_360mbps, |
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} |
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}, |
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}; |
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static const struct ov9734_mode supported_modes[] = { |
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{ |
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.width = 1296, |
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.height = 734, |
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.hts = 0x5c6, |
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.vts_def = OV9734_VTS_30FPS, |
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.vts_min = OV9734_VTS_30FPS_MIN, |
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.reg_list = { |
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.num_of_regs = ARRAY_SIZE(mode_1296x734_regs), |
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.regs = mode_1296x734_regs, |
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}, |
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.link_freq_index = OV9734_LINK_FREQ_180MHZ_INDEX, |
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}, |
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}; |
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struct ov9734 { |
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struct v4l2_subdev sd; |
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struct media_pad pad; |
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struct v4l2_ctrl_handler ctrl_handler; |
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/* V4L2 Controls */ |
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struct v4l2_ctrl *link_freq; |
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struct v4l2_ctrl *pixel_rate; |
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struct v4l2_ctrl *vblank; |
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struct v4l2_ctrl *hblank; |
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struct v4l2_ctrl *exposure; |
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|
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/* Current mode */ |
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const struct ov9734_mode *cur_mode; |
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|
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/* To serialize asynchronus callbacks */ |
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struct mutex mutex; |
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|
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/* Streaming on/off */ |
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bool streaming; |
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}; |
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static inline struct ov9734 *to_ov9734(struct v4l2_subdev *subdev) |
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{ |
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return container_of(subdev, struct ov9734, sd); |
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} |
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static u64 to_pixel_rate(u32 f_index) |
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{ |
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u64 pixel_rate = link_freq_menu_items[f_index] * 2 * OV9734_DATA_LANES; |
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do_div(pixel_rate, OV9734_RGB_DEPTH); |
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return pixel_rate; |
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} |
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static u64 to_pixels_per_line(u32 hts, u32 f_index) |
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{ |
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u64 ppl = hts * to_pixel_rate(f_index); |
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do_div(ppl, OV9734_SCLK); |
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return ppl; |
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} |
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static int ov9734_read_reg(struct ov9734 *ov9734, u16 reg, u16 len, u32 *val) |
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{ |
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struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); |
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struct i2c_msg msgs[2]; |
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u8 addr_buf[2]; |
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u8 data_buf[4] = {0}; |
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int ret; |
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if (len > sizeof(data_buf)) |
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return -EINVAL; |
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put_unaligned_be16(reg, addr_buf); |
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msgs[0].addr = client->addr; |
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msgs[0].flags = 0; |
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msgs[0].len = sizeof(addr_buf); |
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msgs[0].buf = addr_buf; |
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msgs[1].addr = client->addr; |
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msgs[1].flags = I2C_M_RD; |
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msgs[1].len = len; |
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msgs[1].buf = &data_buf[sizeof(data_buf) - len]; |
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ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs)); |
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if (ret != ARRAY_SIZE(msgs)) |
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return ret < 0 ? ret : -EIO; |
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*val = get_unaligned_be32(data_buf); |
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return 0; |
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} |
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static int ov9734_write_reg(struct ov9734 *ov9734, u16 reg, u16 len, u32 val) |
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{ |
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struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); |
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u8 buf[6]; |
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int ret = 0; |
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if (len > 4) |
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return -EINVAL; |
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put_unaligned_be16(reg, buf); |
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put_unaligned_be32(val << 8 * (4 - len), buf + 2); |
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ret = i2c_master_send(client, buf, len + 2); |
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if (ret != len + 2) |
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return ret < 0 ? ret : -EIO; |
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return 0; |
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} |
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static int ov9734_write_reg_list(struct ov9734 *ov9734, |
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const struct ov9734_reg_list *r_list) |
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{ |
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struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); |
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unsigned int i; |
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int ret; |
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for (i = 0; i < r_list->num_of_regs; i++) { |
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ret = ov9734_write_reg(ov9734, r_list->regs[i].address, 1, |
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r_list->regs[i].val); |
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if (ret) { |
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dev_err_ratelimited(&client->dev, |
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"write reg 0x%4.4x return err = %d", |
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r_list->regs[i].address, ret); |
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return ret; |
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} |
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} |
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return 0; |
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} |
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static int ov9734_update_digital_gain(struct ov9734 *ov9734, u32 d_gain) |
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{ |
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int ret; |
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ret = ov9734_write_reg(ov9734, OV9734_REG_MWB_R_GAIN, 2, d_gain); |
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if (ret) |
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return ret; |
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ret = ov9734_write_reg(ov9734, OV9734_REG_MWB_G_GAIN, 2, d_gain); |
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if (ret) |
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return ret; |
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|
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return ov9734_write_reg(ov9734, OV9734_REG_MWB_B_GAIN, 2, d_gain); |
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} |
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static int ov9734_test_pattern(struct ov9734 *ov9734, u32 pattern) |
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{ |
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if (pattern) |
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pattern = (pattern - 1) << OV9734_TEST_PATTERN_BAR_SHIFT | |
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OV9734_TEST_PATTERN_ENABLE; |
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|
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return ov9734_write_reg(ov9734, OV9734_REG_TEST_PATTERN, 1, pattern); |
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} |
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|
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static int ov9734_set_ctrl(struct v4l2_ctrl *ctrl) |
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{ |
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struct ov9734 *ov9734 = container_of(ctrl->handler, |
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struct ov9734, ctrl_handler); |
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struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); |
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s64 exposure_max; |
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int ret = 0; |
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|
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/* Propagate change of current control to all related controls */ |
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if (ctrl->id == V4L2_CID_VBLANK) { |
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/* Update max exposure while meeting expected vblanking */ |
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exposure_max = ov9734->cur_mode->height + ctrl->val - |
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OV9734_EXPOSURE_MAX_MARGIN; |
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__v4l2_ctrl_modify_range(ov9734->exposure, |
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ov9734->exposure->minimum, |
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exposure_max, ov9734->exposure->step, |
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exposure_max); |
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} |
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|
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/* V4L2 controls values will be applied only when power is already up */ |
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if (!pm_runtime_get_if_in_use(&client->dev)) |
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return 0; |
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|
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switch (ctrl->id) { |
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case V4L2_CID_ANALOGUE_GAIN: |
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ret = ov9734_write_reg(ov9734, OV9734_REG_ANALOG_GAIN, |
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2, ctrl->val); |
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break; |
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|
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case V4L2_CID_DIGITAL_GAIN: |
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ret = ov9734_update_digital_gain(ov9734, ctrl->val); |
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break; |
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|
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case V4L2_CID_EXPOSURE: |
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/* 4 least significant bits of expsoure are fractional part */ |
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ret = ov9734_write_reg(ov9734, OV9734_REG_EXPOSURE, |
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3, ctrl->val << 4); |
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break; |
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|
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case V4L2_CID_VBLANK: |
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ret = ov9734_write_reg(ov9734, OV9734_REG_VTS, 2, |
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ov9734->cur_mode->height + ctrl->val); |
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break; |
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|
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case V4L2_CID_TEST_PATTERN: |
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ret = ov9734_test_pattern(ov9734, ctrl->val); |
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break; |
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|
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default: |
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ret = -EINVAL; |
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break; |
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} |
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|
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pm_runtime_put(&client->dev); |
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|
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return ret; |
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} |
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|
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static const struct v4l2_ctrl_ops ov9734_ctrl_ops = { |
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.s_ctrl = ov9734_set_ctrl, |
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}; |
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|
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static int ov9734_init_controls(struct ov9734 *ov9734) |
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{ |
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struct v4l2_ctrl_handler *ctrl_hdlr; |
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const struct ov9734_mode *cur_mode; |
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s64 exposure_max, h_blank, pixel_rate; |
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u32 vblank_min, vblank_max, vblank_default; |
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int ret, size; |
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|
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ctrl_hdlr = &ov9734->ctrl_handler; |
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ret = v4l2_ctrl_handler_init(ctrl_hdlr, 8); |
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if (ret) |
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return ret; |
|
|
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ctrl_hdlr->lock = &ov9734->mutex; |
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cur_mode = ov9734->cur_mode; |
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size = ARRAY_SIZE(link_freq_menu_items); |
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ov9734->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr, &ov9734_ctrl_ops, |
|
V4L2_CID_LINK_FREQ, |
|
size - 1, 0, |
|
link_freq_menu_items); |
|
if (ov9734->link_freq) |
|
ov9734->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
|
|
|
pixel_rate = to_pixel_rate(OV9734_LINK_FREQ_180MHZ_INDEX); |
|
ov9734->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, |
|
V4L2_CID_PIXEL_RATE, 0, |
|
pixel_rate, 1, pixel_rate); |
|
vblank_min = cur_mode->vts_min - cur_mode->height; |
|
vblank_max = OV9734_VTS_MAX - cur_mode->height; |
|
vblank_default = cur_mode->vts_def - cur_mode->height; |
|
ov9734->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, |
|
V4L2_CID_VBLANK, vblank_min, |
|
vblank_max, 1, vblank_default); |
|
h_blank = to_pixels_per_line(cur_mode->hts, cur_mode->link_freq_index); |
|
h_blank -= cur_mode->width; |
|
ov9734->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, |
|
V4L2_CID_HBLANK, h_blank, h_blank, 1, |
|
h_blank); |
|
if (ov9734->hblank) |
|
ov9734->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY; |
|
|
|
v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_ANALOGUE_GAIN, |
|
OV9734_ANAL_GAIN_MIN, OV9734_ANAL_GAIN_MAX, |
|
OV9734_ANAL_GAIN_STEP, OV9734_ANAL_GAIN_MIN); |
|
v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, V4L2_CID_DIGITAL_GAIN, |
|
OV9734_DGTL_GAIN_MIN, OV9734_DGTL_GAIN_MAX, |
|
OV9734_DGTL_GAIN_STEP, OV9734_DGTL_GAIN_DEFAULT); |
|
exposure_max = ov9734->cur_mode->vts_def - OV9734_EXPOSURE_MAX_MARGIN; |
|
ov9734->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov9734_ctrl_ops, |
|
V4L2_CID_EXPOSURE, |
|
OV9734_EXPOSURE_MIN, exposure_max, |
|
OV9734_EXPOSURE_STEP, |
|
exposure_max); |
|
v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov9734_ctrl_ops, |
|
V4L2_CID_TEST_PATTERN, |
|
ARRAY_SIZE(ov9734_test_pattern_menu) - 1, |
|
0, 0, ov9734_test_pattern_menu); |
|
if (ctrl_hdlr->error) |
|
return ctrl_hdlr->error; |
|
|
|
ov9734->sd.ctrl_handler = ctrl_hdlr; |
|
|
|
return 0; |
|
} |
|
|
|
static void ov9734_update_pad_format(const struct ov9734_mode *mode, |
|
struct v4l2_mbus_framefmt *fmt) |
|
{ |
|
fmt->width = mode->width; |
|
fmt->height = mode->height; |
|
fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; |
|
fmt->field = V4L2_FIELD_NONE; |
|
} |
|
|
|
static int ov9734_start_streaming(struct ov9734 *ov9734) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); |
|
const struct ov9734_reg_list *reg_list; |
|
int link_freq_index, ret; |
|
|
|
link_freq_index = ov9734->cur_mode->link_freq_index; |
|
reg_list = &link_freq_configs[link_freq_index].reg_list; |
|
ret = ov9734_write_reg_list(ov9734, reg_list); |
|
if (ret) { |
|
dev_err(&client->dev, "failed to set plls"); |
|
return ret; |
|
} |
|
|
|
reg_list = &ov9734->cur_mode->reg_list; |
|
ret = ov9734_write_reg_list(ov9734, reg_list); |
|
if (ret) { |
|
dev_err(&client->dev, "failed to set mode"); |
|
return ret; |
|
} |
|
|
|
ret = __v4l2_ctrl_handler_setup(ov9734->sd.ctrl_handler); |
|
if (ret) |
|
return ret; |
|
|
|
ret = ov9734_write_reg(ov9734, OV9734_REG_MODE_SELECT, |
|
1, OV9734_MODE_STREAMING); |
|
if (ret) |
|
dev_err(&client->dev, "failed to start stream"); |
|
|
|
return ret; |
|
} |
|
|
|
static void ov9734_stop_streaming(struct ov9734 *ov9734) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); |
|
|
|
if (ov9734_write_reg(ov9734, OV9734_REG_MODE_SELECT, |
|
1, OV9734_MODE_STANDBY)) |
|
dev_err(&client->dev, "failed to stop stream"); |
|
} |
|
|
|
static int ov9734_set_stream(struct v4l2_subdev *sd, int enable) |
|
{ |
|
struct ov9734 *ov9734 = to_ov9734(sd); |
|
struct i2c_client *client = v4l2_get_subdevdata(sd); |
|
int ret = 0; |
|
|
|
mutex_lock(&ov9734->mutex); |
|
if (ov9734->streaming == enable) { |
|
mutex_unlock(&ov9734->mutex); |
|
return 0; |
|
} |
|
|
|
if (enable) { |
|
ret = pm_runtime_get_sync(&client->dev); |
|
if (ret < 0) { |
|
pm_runtime_put_noidle(&client->dev); |
|
mutex_unlock(&ov9734->mutex); |
|
return ret; |
|
} |
|
|
|
ret = ov9734_start_streaming(ov9734); |
|
if (ret) { |
|
enable = 0; |
|
ov9734_stop_streaming(ov9734); |
|
pm_runtime_put(&client->dev); |
|
} |
|
} else { |
|
ov9734_stop_streaming(ov9734); |
|
pm_runtime_put(&client->dev); |
|
} |
|
|
|
ov9734->streaming = enable; |
|
mutex_unlock(&ov9734->mutex); |
|
|
|
return ret; |
|
} |
|
|
|
static int __maybe_unused ov9734_suspend(struct device *dev) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct v4l2_subdev *sd = i2c_get_clientdata(client); |
|
struct ov9734 *ov9734 = to_ov9734(sd); |
|
|
|
mutex_lock(&ov9734->mutex); |
|
if (ov9734->streaming) |
|
ov9734_stop_streaming(ov9734); |
|
|
|
mutex_unlock(&ov9734->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static int __maybe_unused ov9734_resume(struct device *dev) |
|
{ |
|
struct i2c_client *client = to_i2c_client(dev); |
|
struct v4l2_subdev *sd = i2c_get_clientdata(client); |
|
struct ov9734 *ov9734 = to_ov9734(sd); |
|
int ret = 0; |
|
|
|
mutex_lock(&ov9734->mutex); |
|
if (!ov9734->streaming) |
|
goto exit; |
|
|
|
ret = ov9734_start_streaming(ov9734); |
|
if (ret) { |
|
ov9734->streaming = false; |
|
ov9734_stop_streaming(ov9734); |
|
} |
|
|
|
exit: |
|
mutex_unlock(&ov9734->mutex); |
|
return ret; |
|
} |
|
|
|
static int ov9734_set_format(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_format *fmt) |
|
{ |
|
struct ov9734 *ov9734 = to_ov9734(sd); |
|
const struct ov9734_mode *mode; |
|
s32 vblank_def, h_blank; |
|
|
|
mode = v4l2_find_nearest_size(supported_modes, |
|
ARRAY_SIZE(supported_modes), width, |
|
height, fmt->format.width, |
|
fmt->format.height); |
|
|
|
mutex_lock(&ov9734->mutex); |
|
ov9734_update_pad_format(mode, &fmt->format); |
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
|
*v4l2_subdev_get_try_format(sd, cfg, fmt->pad) = fmt->format; |
|
} else { |
|
ov9734->cur_mode = mode; |
|
__v4l2_ctrl_s_ctrl(ov9734->link_freq, mode->link_freq_index); |
|
__v4l2_ctrl_s_ctrl_int64(ov9734->pixel_rate, |
|
to_pixel_rate(mode->link_freq_index)); |
|
|
|
/* Update limits and set FPS to default */ |
|
vblank_def = mode->vts_def - mode->height; |
|
__v4l2_ctrl_modify_range(ov9734->vblank, |
|
mode->vts_min - mode->height, |
|
OV9734_VTS_MAX - mode->height, 1, |
|
vblank_def); |
|
__v4l2_ctrl_s_ctrl(ov9734->vblank, vblank_def); |
|
h_blank = to_pixels_per_line(mode->hts, mode->link_freq_index) - |
|
mode->width; |
|
__v4l2_ctrl_modify_range(ov9734->hblank, h_blank, h_blank, 1, |
|
h_blank); |
|
} |
|
|
|
mutex_unlock(&ov9734->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static int ov9734_get_format(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_format *fmt) |
|
{ |
|
struct ov9734 *ov9734 = to_ov9734(sd); |
|
|
|
mutex_lock(&ov9734->mutex); |
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) |
|
fmt->format = *v4l2_subdev_get_try_format(&ov9734->sd, cfg, |
|
fmt->pad); |
|
else |
|
ov9734_update_pad_format(ov9734->cur_mode, &fmt->format); |
|
|
|
mutex_unlock(&ov9734->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static int ov9734_enum_mbus_code(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_mbus_code_enum *code) |
|
{ |
|
if (code->index > 0) |
|
return -EINVAL; |
|
|
|
code->code = MEDIA_BUS_FMT_SGRBG10_1X10; |
|
|
|
return 0; |
|
} |
|
|
|
static int ov9734_enum_frame_size(struct v4l2_subdev *sd, |
|
struct v4l2_subdev_pad_config *cfg, |
|
struct v4l2_subdev_frame_size_enum *fse) |
|
{ |
|
if (fse->index >= ARRAY_SIZE(supported_modes)) |
|
return -EINVAL; |
|
|
|
if (fse->code != MEDIA_BUS_FMT_SGRBG10_1X10) |
|
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 int ov9734_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) |
|
{ |
|
struct ov9734 *ov9734 = to_ov9734(sd); |
|
|
|
mutex_lock(&ov9734->mutex); |
|
ov9734_update_pad_format(&supported_modes[0], |
|
v4l2_subdev_get_try_format(sd, fh->pad, 0)); |
|
mutex_unlock(&ov9734->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct v4l2_subdev_video_ops ov9734_video_ops = { |
|
.s_stream = ov9734_set_stream, |
|
}; |
|
|
|
static const struct v4l2_subdev_pad_ops ov9734_pad_ops = { |
|
.set_fmt = ov9734_set_format, |
|
.get_fmt = ov9734_get_format, |
|
.enum_mbus_code = ov9734_enum_mbus_code, |
|
.enum_frame_size = ov9734_enum_frame_size, |
|
}; |
|
|
|
static const struct v4l2_subdev_ops ov9734_subdev_ops = { |
|
.video = &ov9734_video_ops, |
|
.pad = &ov9734_pad_ops, |
|
}; |
|
|
|
static const struct media_entity_operations ov9734_subdev_entity_ops = { |
|
.link_validate = v4l2_subdev_link_validate, |
|
}; |
|
|
|
static const struct v4l2_subdev_internal_ops ov9734_internal_ops = { |
|
.open = ov9734_open, |
|
}; |
|
|
|
static int ov9734_identify_module(struct ov9734 *ov9734) |
|
{ |
|
struct i2c_client *client = v4l2_get_subdevdata(&ov9734->sd); |
|
int ret; |
|
u32 val; |
|
|
|
ret = ov9734_read_reg(ov9734, OV9734_REG_CHIP_ID, 2, &val); |
|
if (ret) |
|
return ret; |
|
|
|
if (val != OV9734_CHIP_ID) { |
|
dev_err(&client->dev, "chip id mismatch: %x!=%x", |
|
OV9734_CHIP_ID, val); |
|
return -ENXIO; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int ov9734_check_hwcfg(struct device *dev) |
|
{ |
|
struct fwnode_handle *ep; |
|
struct fwnode_handle *fwnode = dev_fwnode(dev); |
|
struct v4l2_fwnode_endpoint bus_cfg = { |
|
.bus_type = V4L2_MBUS_CSI2_DPHY |
|
}; |
|
u32 mclk; |
|
int ret; |
|
unsigned int i, j; |
|
|
|
if (!fwnode) |
|
return -ENXIO; |
|
|
|
ret = fwnode_property_read_u32(fwnode, "clock-frequency", &mclk); |
|
if (ret) |
|
return ret; |
|
|
|
if (mclk != OV9734_MCLK) { |
|
dev_err(dev, "external clock %d is not supported", mclk); |
|
return -EINVAL; |
|
} |
|
|
|
ep = fwnode_graph_get_next_endpoint(fwnode, NULL); |
|
if (!ep) |
|
return -ENXIO; |
|
|
|
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); |
|
fwnode_handle_put(ep); |
|
if (ret) |
|
return ret; |
|
|
|
if (!bus_cfg.nr_of_link_frequencies) { |
|
dev_err(dev, "no link frequencies defined"); |
|
ret = -EINVAL; |
|
goto check_hwcfg_error; |
|
} |
|
|
|
for (i = 0; i < ARRAY_SIZE(link_freq_menu_items); i++) { |
|
for (j = 0; j < bus_cfg.nr_of_link_frequencies; j++) { |
|
if (link_freq_menu_items[i] == |
|
bus_cfg.link_frequencies[j]) |
|
break; |
|
} |
|
|
|
if (j == bus_cfg.nr_of_link_frequencies) { |
|
dev_err(dev, "no link frequency %lld supported", |
|
link_freq_menu_items[i]); |
|
ret = -EINVAL; |
|
goto check_hwcfg_error; |
|
} |
|
} |
|
|
|
check_hwcfg_error: |
|
v4l2_fwnode_endpoint_free(&bus_cfg); |
|
|
|
return ret; |
|
} |
|
|
|
static int ov9734_remove(struct i2c_client *client) |
|
{ |
|
struct v4l2_subdev *sd = i2c_get_clientdata(client); |
|
struct ov9734 *ov9734 = to_ov9734(sd); |
|
|
|
v4l2_async_unregister_subdev(sd); |
|
media_entity_cleanup(&sd->entity); |
|
v4l2_ctrl_handler_free(sd->ctrl_handler); |
|
pm_runtime_disable(&client->dev); |
|
mutex_destroy(&ov9734->mutex); |
|
|
|
return 0; |
|
} |
|
|
|
static int ov9734_probe(struct i2c_client *client) |
|
{ |
|
struct ov9734 *ov9734; |
|
int ret; |
|
|
|
ret = ov9734_check_hwcfg(&client->dev); |
|
if (ret) { |
|
dev_err(&client->dev, "failed to check HW configuration: %d", |
|
ret); |
|
return ret; |
|
} |
|
|
|
ov9734 = devm_kzalloc(&client->dev, sizeof(*ov9734), GFP_KERNEL); |
|
if (!ov9734) |
|
return -ENOMEM; |
|
|
|
v4l2_i2c_subdev_init(&ov9734->sd, client, &ov9734_subdev_ops); |
|
ret = ov9734_identify_module(ov9734); |
|
if (ret) { |
|
dev_err(&client->dev, "failed to find sensor: %d", ret); |
|
return ret; |
|
} |
|
|
|
mutex_init(&ov9734->mutex); |
|
ov9734->cur_mode = &supported_modes[0]; |
|
ret = ov9734_init_controls(ov9734); |
|
if (ret) { |
|
dev_err(&client->dev, "failed to init controls: %d", ret); |
|
goto probe_error_v4l2_ctrl_handler_free; |
|
} |
|
|
|
ov9734->sd.internal_ops = &ov9734_internal_ops; |
|
ov9734->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; |
|
ov9734->sd.entity.ops = &ov9734_subdev_entity_ops; |
|
ov9734->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR; |
|
ov9734->pad.flags = MEDIA_PAD_FL_SOURCE; |
|
ret = media_entity_pads_init(&ov9734->sd.entity, 1, &ov9734->pad); |
|
if (ret) { |
|
dev_err(&client->dev, "failed to init entity pads: %d", ret); |
|
goto probe_error_v4l2_ctrl_handler_free; |
|
} |
|
|
|
ret = v4l2_async_register_subdev_sensor_common(&ov9734->sd); |
|
if (ret < 0) { |
|
dev_err(&client->dev, "failed to register V4L2 subdev: %d", |
|
ret); |
|
goto probe_error_media_entity_cleanup; |
|
} |
|
|
|
/* |
|
* Device is already turned on by i2c-core with ACPI domain PM. |
|
* Enable runtime PM and turn off the device. |
|
*/ |
|
pm_runtime_set_active(&client->dev); |
|
pm_runtime_enable(&client->dev); |
|
pm_runtime_idle(&client->dev); |
|
|
|
return 0; |
|
|
|
probe_error_media_entity_cleanup: |
|
media_entity_cleanup(&ov9734->sd.entity); |
|
|
|
probe_error_v4l2_ctrl_handler_free: |
|
v4l2_ctrl_handler_free(ov9734->sd.ctrl_handler); |
|
mutex_destroy(&ov9734->mutex); |
|
|
|
return ret; |
|
} |
|
|
|
static const struct dev_pm_ops ov9734_pm_ops = { |
|
SET_SYSTEM_SLEEP_PM_OPS(ov9734_suspend, ov9734_resume) |
|
}; |
|
|
|
static const struct acpi_device_id ov9734_acpi_ids[] = { |
|
{ "OVTI9734", }, |
|
{} |
|
}; |
|
|
|
MODULE_DEVICE_TABLE(acpi, ov9734_acpi_ids); |
|
|
|
static struct i2c_driver ov9734_i2c_driver = { |
|
.driver = { |
|
.name = "ov9734", |
|
.pm = &ov9734_pm_ops, |
|
.acpi_match_table = ov9734_acpi_ids, |
|
}, |
|
.probe_new = ov9734_probe, |
|
.remove = ov9734_remove, |
|
}; |
|
|
|
module_i2c_driver(ov9734_i2c_driver); |
|
|
|
MODULE_AUTHOR("Qiu, Tianshu <[email protected]>"); |
|
MODULE_AUTHOR("Bingbu Cao <[email protected]>"); |
|
MODULE_DESCRIPTION("OmniVision OV9734 sensor driver"); |
|
MODULE_LICENSE("GPL v2");
|
|
|