// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2021 Intel Corporation.
#include <linux/acpi.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>
#define OV13B10_REG_VALUE_08BIT 1
#define OV13B10_REG_VALUE_16BIT 2
#define OV13B10_REG_VALUE_24BIT 3
#define OV13B10_REG_MODE_SELECT 0 x0100
#define OV13B10_MODE_STANDBY 0 x00
#define OV13B10_MODE_STREAMING 0 x01
#define OV13B10_REG_SOFTWARE_RST 0 x0103
#define OV13B10_SOFTWARE_RST 0 x01
/* Chip ID */
#define OV13B10_REG_CHIP_ID 0 x300a
#define OV13B10_CHIP_ID 0 x560d42
/* V_TIMING internal */
#define OV13B10_REG_VTS 0 x380e
#define OV13B10_VTS_30FPS 0 x0c7c
#define OV13B10_VTS_60FPS 0 x063e
#define OV13B10_VTS_120FPS 0 x0320
#define OV13B10_VTS_MAX 0 x7fff
/* Exposure control */
#define OV13B10_REG_EXPOSURE 0 x3500
#define OV13B10_EXPOSURE_MIN 4
#define OV13B10_EXPOSURE_STEP 1
#define OV13B10_EXPOSURE_DEFAULT 0 x40
/* Analog gain control */
#define OV13B10_REG_ANALOG_GAIN 0 x3508
#define OV13B10_ANA_GAIN_MIN 0 x80
#define OV13B10_ANA_GAIN_MAX 0 x07c0
#define OV13B10_ANA_GAIN_STEP 1
#define OV13B10_ANA_GAIN_DEFAULT 0 x80
/* Digital gain control */
#define OV13B10_REG_DGTL_GAIN_H 0 x350a
#define OV13B10_REG_DGTL_GAIN_M 0 x350b
#define OV13B10_REG_DGTL_GAIN_L 0 x350c
#define OV13B10_DGTL_GAIN_MIN 1024 /* Min = 1 X */
#define OV13B10_DGTL_GAIN_MAX (4096 - 1 ) /* Max = 4 X */
#define OV13B10_DGTL_GAIN_DEFAULT 2560 /* Default gain = 2.5 X */
#define OV13B10_DGTL_GAIN_STEP 1 /* Each step = 1/1024 */
#define OV13B10_DGTL_GAIN_L_SHIFT 6
#define OV13B10_DGTL_GAIN_L_MASK 0 x3
#define OV13B10_DGTL_GAIN_M_SHIFT 2
#define OV13B10_DGTL_GAIN_M_MASK 0 xff
#define OV13B10_DGTL_GAIN_H_SHIFT 10
#define OV13B10_DGTL_GAIN_H_MASK 0 x3
/* Test Pattern Control */
#define OV13B10_REG_TEST_PATTERN 0 x5080
#define OV13B10_TEST_PATTERN_ENABLE BIT(7 )
#define OV13B10_TEST_PATTERN_MASK 0 xf3
#define OV13B10_TEST_PATTERN_BAR_SHIFT 2
/* Flip Control */
#define OV13B10_REG_FORMAT1 0 x3820
#define OV13B10_REG_FORMAT2 0 x3821
/* Horizontal Window Offset */
#define OV13B10_REG_H_WIN_OFFSET 0 x3811
/* Vertical Window Offset */
#define OV13B10_REG_V_WIN_OFFSET 0 x3813
struct ov13b10_reg {
u16 address;
u8 val;
};
struct ov13b10_reg_list {
u32 num_of_regs;
const struct ov13b10_reg *regs;
};
/* Link frequency config */
struct ov13b10_link_freq_config {
u64 link_freq;
/* registers for this link frequency */
struct ov13b10_reg_list reg_list;
};
/* Mode : resolution and related config&values */
struct ov13b10_mode {
/* Frame width */
u32 width;
/* Frame height */
u32 height;
/* V-timing */
u32 vts_def;
u32 vts_min;
/* Index of Link frequency config to be used */
u32 link_freq_index;
/* Pixels per line in current mode */
u32 ppl;
/* Default register values */
struct ov13b10_reg_list reg_list;
};
/* 4208x3120 needs 1120Mbps/lane, 4 lanes */
static const struct ov13b10_reg mipi_data_rate_1120mbps[] = {
{0 x0103, 0 x01},
{0 x0303, 0 x04},
{0 x0305, 0 xaf},
{0 x0321, 0 x00},
{0 x0323, 0 x04},
{0 x0324, 0 x01},
{0 x0325, 0 xa4},
{0 x0326, 0 x81},
{0 x0327, 0 x04},
{0 x3012, 0 x07},
{0 x3013, 0 x32},
{0 x3107, 0 x23},
{0 x3501, 0 x0c},
{0 x3502, 0 x10},
{0 x3504, 0 x08},
{0 x3508, 0 x07},
{0 x3509, 0 xc0},
{0 x3600, 0 x16},
{0 x3601, 0 x54},
{0 x3612, 0 x4e},
{0 x3620, 0 x00},
{0 x3621, 0 x68},
{0 x3622, 0 x66},
{0 x3623, 0 x03},
{0 x3662, 0 x92},
{0 x3666, 0 xbb},
{0 x3667, 0 x44},
{0 x366e, 0 xff},
{0 x366f, 0 xf3},
{0 x3675, 0 x44},
{0 x3676, 0 x00},
{0 x367f, 0 xe9},
{0 x3681, 0 x32},
{0 x3682, 0 x1f},
{0 x3683, 0 x0b},
{0 x3684, 0 x0b},
{0 x3704, 0 x0f},
{0 x3706, 0 x40},
{0 x3708, 0 x3b},
{0 x3709, 0 x72},
{0 x370b, 0 xa2},
{0 x3714, 0 x24},
{0 x371a, 0 x3e},
{0 x3725, 0 x42},
{0 x3739, 0 x12},
{0 x3767, 0 x00},
{0 x377a, 0 x0d},
{0 x3789, 0 x18},
{0 x3790, 0 x40},
{0 x3791, 0 xa2},
{0 x37c2, 0 x04},
{0 x37c3, 0 xf1},
{0 x37d9, 0 x0c},
{0 x37da, 0 x02},
{0 x37dc, 0 x02},
{0 x37e1, 0 x04},
{0 x37e2, 0 x0a},
{0 x3800, 0 x00},
{0 x3801, 0 x00},
{0 x3802, 0 x00},
{0 x3803, 0 x08},
{0 x3804, 0 x10},
{0 x3805, 0 x8f},
{0 x3806, 0 x0c},
{0 x3807, 0 x47},
{0 x3808, 0 x10},
{0 x3809, 0 x70},
{0 x380a, 0 x0c},
{0 x380b, 0 x30},
{0 x380c, 0 x04},
{0 x380d, 0 x98},
{0 x380e, 0 x0c},
{0 x380f, 0 x7c},
{0 x3811, 0 x0f},
{0 x3813, 0 x09},
{0 x3814, 0 x01},
{0 x3815, 0 x01},
{0 x3816, 0 x01},
{0 x3817, 0 x01},
{0 x381f, 0 x08},
{0 x3820, 0 x88},
{0 x3821, 0 x00},
{0 x3822, 0 x14},
{0 x382e, 0 xe6},
{0 x3c80, 0 x00},
{0 x3c87, 0 x01},
{0 x3c8c, 0 x19},
{0 x3c8d, 0 x1c},
{0 x3ca0, 0 x00},
{0 x3ca1, 0 x00},
{0 x3ca2, 0 x00},
{0 x3ca3, 0 x00},
{0 x3ca4, 0 x50},
{0 x3ca5, 0 x11},
{0 x3ca6, 0 x01},
{0 x3ca7, 0 x00},
{0 x3ca8, 0 x00},
{0 x4008, 0 x02},
{0 x4009, 0 x0f},
{0 x400a, 0 x01},
{0 x400b, 0 x19},
{0 x4011, 0 x21},
{0 x4017, 0 x08},
{0 x4019, 0 x04},
{0 x401a, 0 x58},
{0 x4032, 0 x1e},
{0 x4050, 0 x02},
{0 x4051, 0 x09},
{0 x405e, 0 x00},
{0 x4066, 0 x02},
{0 x4501, 0 x00},
{0 x4502, 0 x10},
{0 x4505, 0 x00},
{0 x4800, 0 x64},
{0 x481b, 0 x3e},
{0 x481f, 0 x30},
{0 x4825, 0 x34},
{0 x4837, 0 x0e},
{0 x484b, 0 x01},
{0 x4883, 0 x02},
{0 x5000, 0 xff},
{0 x5001, 0 x0f},
{0 x5045, 0 x20},
{0 x5046, 0 x20},
{0 x5047, 0 xa4},
{0 x5048, 0 x20},
{0 x5049, 0 xa4},
};
static const struct ov13b10_reg mode_4208x3120_regs[] = {
{0 x0305, 0 xaf},
{0 x3501, 0 x0c},
{0 x3662, 0 x92},
{0 x3714, 0 x24},
{0 x3739, 0 x12},
{0 x37c2, 0 x04},
{0 x37d9, 0 x0c},
{0 x37e2, 0 x0a},
{0 x3800, 0 x00},
{0 x3801, 0 x00},
{0 x3802, 0 x00},
{0 x3803, 0 x08},
{0 x3804, 0 x10},
{0 x3805, 0 x8f},
{0 x3806, 0 x0c},
{0 x3807, 0 x47},
{0 x3808, 0 x10},
{0 x3809, 0 x70},
{0 x380a, 0 x0c},
{0 x380b, 0 x30},
{0 x380c, 0 x04},
{0 x380d, 0 x98},
{0 x380e, 0 x0c},
{0 x380f, 0 x7c},
{0 x3810, 0 x00},
{0 x3811, 0 x0f},
{0 x3812, 0 x00},
{0 x3813, 0 x09},
{0 x3814, 0 x01},
{0 x3816, 0 x01},
{0 x3820, 0 x88},
{0 x3c8c, 0 x19},
{0 x4008, 0 x02},
{0 x4009, 0 x0f},
{0 x4050, 0 x02},
{0 x4051, 0 x09},
{0 x4501, 0 x00},
{0 x4505, 0 x00},
{0 x4837, 0 x0e},
{0 x5000, 0 xff},
{0 x5001, 0 x0f},
};
static const struct ov13b10_reg mode_4160x3120_regs[] = {
{0 x0305, 0 xaf},
{0 x3501, 0 x0c},
{0 x3662, 0 x92},
{0 x3714, 0 x24},
{0 x3739, 0 x12},
{0 x37c2, 0 x04},
{0 x37d9, 0 x0c},
{0 x37e2, 0 x0a},
{0 x3800, 0 x00},
{0 x3801, 0 x00},
{0 x3802, 0 x00},
{0 x3803, 0 x08},
{0 x3804, 0 x10},
{0 x3805, 0 x8f},
{0 x3806, 0 x0c},
{0 x3807, 0 x47},
{0 x3808, 0 x10},
{0 x3809, 0 x40},
{0 x380a, 0 x0c},
{0 x380b, 0 x30},
{0 x380c, 0 x04},
{0 x380d, 0 x98},
{0 x380e, 0 x0c},
{0 x380f, 0 x7c},
{0 x3810, 0 x00},
{0 x3811, 0 x27},
{0 x3812, 0 x00},
{0 x3813, 0 x09},
{0 x3814, 0 x01},
{0 x3816, 0 x01},
{0 x3820, 0 x88},
{0 x3c8c, 0 x19},
{0 x4008, 0 x02},
{0 x4009, 0 x0f},
{0 x4050, 0 x02},
{0 x4051, 0 x09},
{0 x4501, 0 x00},
{0 x4505, 0 x00},
{0 x4837, 0 x0e},
{0 x5000, 0 xff},
{0 x5001, 0 x0f},
};
static const struct ov13b10_reg mode_4160x2340_regs[] = {
{0 x0305, 0 xaf},
{0 x3501, 0 x0c},
{0 x3662, 0 x92},
{0 x3714, 0 x24},
{0 x3739, 0 x12},
{0 x37c2, 0 x04},
{0 x37d9, 0 x0c},
{0 x37e2, 0 x0a},
{0 x3800, 0 x00},
{0 x3801, 0 x00},
{0 x3802, 0 x00},
{0 x3803, 0 x08},
{0 x3804, 0 x10},
{0 x3805, 0 x8f},
{0 x3806, 0 x0c},
{0 x3807, 0 x47},
{0 x3808, 0 x10},
{0 x3809, 0 x40},
{0 x380a, 0 x09},
{0 x380b, 0 x24},
{0 x380c, 0 x04},
{0 x380d, 0 x98},
{0 x380e, 0 x0c},
{0 x380f, 0 x7c},
{0 x3810, 0 x00},
{0 x3811, 0 x27},
{0 x3812, 0 x01},
{0 x3813, 0 x8f},
{0 x3814, 0 x01},
{0 x3816, 0 x01},
{0 x3820, 0 x88},
{0 x3c8c, 0 x19},
{0 x4008, 0 x02},
{0 x4009, 0 x0f},
{0 x4050, 0 x02},
{0 x4051, 0 x09},
{0 x4501, 0 x00},
{0 x4505, 0 x00},
{0 x4837, 0 x0e},
{0 x5000, 0 xff},
{0 x5001, 0 x0f},
};
static const struct ov13b10_reg mode_2104x1560_regs[] = {
{0 x0305, 0 xaf},
{0 x3501, 0 x06},
{0 x3662, 0 x88},
{0 x3714, 0 x28},
{0 x3739, 0 x10},
{0 x37c2, 0 x14},
{0 x37d9, 0 x06},
{0 x37e2, 0 x0c},
{0 x3800, 0 x00},
{0 x3801, 0 x00},
{0 x3802, 0 x00},
{0 x3803, 0 x08},
{0 x3804, 0 x10},
{0 x3805, 0 x8f},
{0 x3806, 0 x0c},
{0 x3807, 0 x47},
{0 x3808, 0 x08},
{0 x3809, 0 x38},
{0 x380a, 0 x06},
{0 x380b, 0 x18},
{0 x380c, 0 x04},
{0 x380d, 0 x98},
{0 x380e, 0 x06},
{0 x380f, 0 x3e},
{0 x3810, 0 x00},
{0 x3811, 0 x07},
{0 x3812, 0 x00},
{0 x3813, 0 x05},
{0 x3814, 0 x03},
{0 x3816, 0 x03},
{0 x3820, 0 x8b},
{0 x3c8c, 0 x18},
{0 x4008, 0 x00},
{0 x4009, 0 x05},
{0 x4050, 0 x00},
{0 x4051, 0 x05},
{0 x4501, 0 x08},
{0 x4505, 0 x00},
{0 x4837, 0 x0e},
{0 x5000, 0 xfd},
{0 x5001, 0 x0d},
};
static const struct ov13b10_reg mode_2080x1170_regs[] = {
{0 x0305, 0 xaf},
{0 x3501, 0 x06},
{0 x3662, 0 x88},
{0 x3714, 0 x28},
{0 x3739, 0 x10},
{0 x37c2, 0 x14},
{0 x37d9, 0 x06},
{0 x37e2, 0 x0c},
{0 x3800, 0 x00},
{0 x3801, 0 x00},
{0 x3802, 0 x00},
{0 x3803, 0 x08},
{0 x3804, 0 x10},
{0 x3805, 0 x8f},
{0 x3806, 0 x0c},
{0 x3807, 0 x47},
{0 x3808, 0 x08},
{0 x3809, 0 x20},
{0 x380a, 0 x04},
{0 x380b, 0 x92},
{0 x380c, 0 x04},
{0 x380d, 0 x98},
{0 x380e, 0 x06},
{0 x380f, 0 x3e},
{0 x3810, 0 x00},
{0 x3811, 0 x13},
{0 x3812, 0 x00},
{0 x3813, 0 xc9},
{0 x3814, 0 x03},
{0 x3816, 0 x03},
{0 x3820, 0 x8b},
{0 x3c8c, 0 x18},
{0 x4008, 0 x00},
{0 x4009, 0 x05},
{0 x4050, 0 x00},
{0 x4051, 0 x05},
{0 x4501, 0 x08},
{0 x4505, 0 x00},
{0 x4837, 0 x0e},
{0 x5000, 0 xfd},
{0 x5001, 0 x0d},
};
static const struct ov13b10_reg mode_1364x768_120fps_regs[] = {
{0 x0305, 0 xaf},
{0 x3011, 0 x7c},
{0 x3501, 0 x03},
{0 x3502, 0 x00},
{0 x3662, 0 x88},
{0 x3714, 0 x28},
{0 x3739, 0 x10},
{0 x37c2, 0 x14},
{0 x37d9, 0 x06},
{0 x37e2, 0 x0c},
{0 x37e4, 0 x00},
{0 x3800, 0 x02},
{0 x3801, 0 xe4},
{0 x3802, 0 x03},
{0 x3803, 0 x48},
{0 x3804, 0 x0d},
{0 x3805, 0 xab},
{0 x3806, 0 x09},
{0 x3807, 0 x60},
{0 x3808, 0 x05},
{0 x3809, 0 x54},
{0 x380a, 0 x03},
{0 x380b, 0 x00},
{0 x380c, 0 x04},
{0 x380d, 0 x8e},
{0 x380e, 0 x03},
{0 x380f, 0 x20},
{0 x3811, 0 x07},
{0 x3813, 0 x07},
{0 x3814, 0 x03},
{0 x3816, 0 x03},
{0 x3820, 0 x8b},
{0 x3c8c, 0 x18},
{0 x4008, 0 x00},
{0 x4009, 0 x05},
{0 x4050, 0 x00},
{0 x4051, 0 x05},
{0 x4501, 0 x08},
{0 x4505, 0 x04},
{0 x5000, 0 xfd},
{0 x5001, 0 x0d},
};
static const struct ov13b10_reg mode_2lanes_2104x1560_60fps_regs[] = {
{0 x3016, 0 x32},
{0 x3106, 0 x29},
{0 x0305, 0 xaf},
{0 x3501, 0 x06},
{0 x3662, 0 x88},
{0 x3714, 0 x28},
{0 x3739, 0 x10},
{0 x37c2, 0 x14},
{0 x37d9, 0 x06},
{0 x37e2, 0 x0c},
{0 x3800, 0 x00},
{0 x3801, 0 x00},
{0 x3802, 0 x00},
{0 x3803, 0 x08},
{0 x3804, 0 x10},
{0 x3805, 0 x8f},
{0 x3806, 0 x0c},
{0 x3807, 0 x47},
{0 x3808, 0 x08},
{0 x3809, 0 x38},
{0 x380a, 0 x06},
{0 x380b, 0 x18},
{0 x380c, 0 x04},
{0 x380d, 0 x98},
{0 x380e, 0 x06},
{0 x380f, 0 x3e},
{0 x3810, 0 x00},
{0 x3811, 0 x07},
{0 x3812, 0 x00},
{0 x3813, 0 x05},
{0 x3814, 0 x03},
{0 x3816, 0 x03},
{0 x3820, 0 x8b},
{0 x3c8c, 0 x18},
{0 x4008, 0 x00},
{0 x4009, 0 x05},
{0 x4050, 0 x00},
{0 x4051, 0 x05},
{0 x4501, 0 x08},
{0 x4505, 0 x00},
{0 x4837, 0 x0e},
{0 x5000, 0 xfd},
{0 x5001, 0 x0d},
};
static const char * const ov13b10_test_pattern_menu[] = {
"Disabled" ,
"Vertical Color Bar Type 1" ,
"Vertical Color Bar Type 2" ,
"Vertical Color Bar Type 3" ,
"Vertical Color Bar Type 4"
};
/* Configurations for supported link frequencies */
#define OV13B10_LINK_FREQ_560MHZ 560000000 ULL
#define OV13B10_LINK_FREQ_INDEX_0 0
#define OV13B10_EXT_CLK 19200000
#define OV13B10_4_DATA_LANES 4
#define OV13B10_2_DATA_LANES 2
/*
* pixel_rate = data_rate * nr_of_lanes / bits_per_pixel
* data_rate => link_freq * 2; number of lanes => 4 or 2; bits per pixel => 10
*/
static u64 link_freq_to_pixel_rate(u64 f, u8 lanes)
{
f *= 2 * lanes;
do_div(f, 10 );
return f;
}
/* Menu items for LINK_FREQ V4L2 control */
static const s64 link_freq_menu_items[] = {
OV13B10_LINK_FREQ_560MHZ
};
/* Link frequency configs */
static const struct ov13b10_link_freq_config
link_freq_configs[] = {
{
.link_freq = OV13B10_LINK_FREQ_560MHZ,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mipi_data_rate_1120mbps),
.regs = mipi_data_rate_1120mbps,
}
}
};
/* Mode configs */
static const struct ov13b10_mode supported_4_lanes_modes[] = {
/* 4 data lanes */
{
.width = 4208 ,
.height = 3120 ,
.vts_def = OV13B10_VTS_30FPS,
.vts_min = OV13B10_VTS_30FPS,
.ppl = 4704 ,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_4208x3120_regs),
.regs = mode_4208x3120_regs,
},
.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
},
{
.width = 4160 ,
.height = 3120 ,
.vts_def = OV13B10_VTS_30FPS,
.vts_min = OV13B10_VTS_30FPS,
.ppl = 4704 ,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_4160x3120_regs),
.regs = mode_4160x3120_regs,
},
.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
},
{
.width = 4160 ,
.height = 2340 ,
.vts_def = OV13B10_VTS_30FPS,
.vts_min = OV13B10_VTS_30FPS,
.ppl = 4704 ,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_4160x2340_regs),
.regs = mode_4160x2340_regs,
},
.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
},
{
.width = 2104 ,
.height = 1560 ,
.vts_def = OV13B10_VTS_60FPS,
.vts_min = OV13B10_VTS_60FPS,
.ppl = 4704 ,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_2104x1560_regs),
.regs = mode_2104x1560_regs,
},
.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
},
{
.width = 2080 ,
.height = 1170 ,
.vts_def = OV13B10_VTS_60FPS,
.vts_min = OV13B10_VTS_60FPS,
.ppl = 4704 ,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_2080x1170_regs),
.regs = mode_2080x1170_regs,
},
.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
},
{
.width = 1364 ,
.height = 768 ,
.vts_def = OV13B10_VTS_120FPS,
.vts_min = OV13B10_VTS_120FPS,
.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
.ppl = 4664 ,
.reg_list = {
.num_of_regs = ARRAY_SIZE(mode_1364x768_120fps_regs),
.regs = mode_1364x768_120fps_regs,
},
},
};
static const struct ov13b10_mode supported_2_lanes_modes[] = {
/* 2 data lanes */
{
.width = 2104 ,
.height = 1560 ,
.vts_def = OV13B10_VTS_60FPS,
.vts_min = OV13B10_VTS_60FPS,
.link_freq_index = OV13B10_LINK_FREQ_INDEX_0,
.ppl = 2352 ,
.reg_list = {
.num_of_regs =
ARRAY_SIZE(mode_2lanes_2104x1560_60fps_regs),
.regs = mode_2lanes_2104x1560_60fps_regs,
},
},
};
struct ov13b10 {
struct v4l2_subdev sd;
struct media_pad pad;
struct v4l2_ctrl_handler ctrl_handler;
struct clk *img_clk;
struct regulator *avdd;
struct gpio_desc *reset;
/* V4L2 Controls */
struct v4l2_ctrl *link_freq;
struct v4l2_ctrl *pixel_rate;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *exposure;
/* Supported modes */
const struct ov13b10_mode *supported_modes;
/* Current mode */
const struct ov13b10_mode *cur_mode;
/* Mutex for serialized access */
struct mutex mutex;
u8 supported_modes_num;
/* Data lanes used */
u8 data_lanes;
/* True if the device has been identified */
bool identified;
};
#define to_ov13b10(_sd) container_of(_sd, struct ov13b10, sd)
/* Read registers up to 4 at a time */
static int ov13b10_read_reg(struct ov13b10 *ov13b,
u16 reg, u32 len, u32 *val)
{
struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
struct i2c_msg msgs[2 ];
u8 *data_be_p;
int ret;
__be32 data_be = 0 ;
__be16 reg_addr_be = cpu_to_be16(reg);
if (len > 4 )
return -EINVAL;
data_be_p = (u8 *)&data_be;
/* Write register address */
msgs[0 ].addr = client->addr;
msgs[0 ].flags = 0 ;
msgs[0 ].len = 2 ;
msgs[0 ].buf = (u8 *)®_addr_be;
/* Read data from register */
msgs[1 ].addr = client->addr;
msgs[1 ].flags = I2C_M_RD;
msgs[1 ].len = len;
msgs[1 ].buf = &data_be_p[4 - len];
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (ret != ARRAY_SIZE(msgs))
return -EIO;
*val = be32_to_cpu(data_be);
return 0 ;
}
/* Write registers up to 4 at a time */
static int ov13b10_write_reg(struct ov13b10 *ov13b,
u16 reg, u32 len, u32 __val)
{
struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
int buf_i, val_i;
u8 buf[6 ], *val_p;
__be32 val;
if (len > 4 )
return -EINVAL;
buf[0 ] = reg >> 8 ;
buf[1 ] = reg & 0 xff;
val = cpu_to_be32(__val);
val_p = (u8 *)&val;
buf_i = 2 ;
val_i = 4 - len;
while (val_i < 4 )
buf[buf_i++] = val_p[val_i++];
if (i2c_master_send(client, buf, len + 2 ) != len + 2 )
return -EIO;
return 0 ;
}
/* Write a list of registers */
static int ov13b10_write_regs(struct ov13b10 *ov13b,
const struct ov13b10_reg *regs, u32 len)
{
struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
int ret;
u32 i;
for (i = 0 ; i < len; i++) {
ret = ov13b10_write_reg(ov13b, 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 ;
}
static int ov13b10_write_reg_list(struct ov13b10 *ov13b,
const struct ov13b10_reg_list *r_list)
{
return ov13b10_write_regs(ov13b, r_list->regs, r_list->num_of_regs);
}
/* Open sub-device */
static int ov13b10_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct ov13b10 *ov13b = to_ov13b10(sd);
const struct ov13b10_mode *default_mode = ov13b->supported_modes;
struct v4l2_mbus_framefmt *try_fmt = v4l2_subdev_state_get_format(fh->state,
0 );
mutex_lock(&ov13b->mutex);
/* Initialize try_fmt */
try_fmt->width = default_mode->width;
try_fmt->height = default_mode->height;
try_fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
try_fmt->field = V4L2_FIELD_NONE;
/* No crop or compose */
mutex_unlock(&ov13b->mutex);
return 0 ;
}
static int ov13b10_update_digital_gain(struct ov13b10 *ov13b, u32 d_gain)
{
int ret;
u32 val;
/*
* 0x350C[7:6], 0x350B[7:0], 0x350A[1:0]
*/
val = (d_gain & OV13B10_DGTL_GAIN_L_MASK) << OV13B10_DGTL_GAIN_L_SHIFT;
ret = ov13b10_write_reg(ov13b, OV13B10_REG_DGTL_GAIN_L,
OV13B10_REG_VALUE_08BIT, val);
if (ret)
return ret;
val = (d_gain >> OV13B10_DGTL_GAIN_M_SHIFT) & OV13B10_DGTL_GAIN_M_MASK;
ret = ov13b10_write_reg(ov13b, OV13B10_REG_DGTL_GAIN_M,
OV13B10_REG_VALUE_08BIT, val);
if (ret)
return ret;
val = (d_gain >> OV13B10_DGTL_GAIN_H_SHIFT) & OV13B10_DGTL_GAIN_H_MASK;
ret = ov13b10_write_reg(ov13b, OV13B10_REG_DGTL_GAIN_H,
OV13B10_REG_VALUE_08BIT, val);
return ret;
}
static int ov13b10_enable_test_pattern(struct ov13b10 *ov13b, u32 pattern)
{
int ret;
u32 val;
ret = ov13b10_read_reg(ov13b, OV13B10_REG_TEST_PATTERN,
OV13B10_REG_VALUE_08BIT, &val);
if (ret)
return ret;
if (pattern) {
val &= OV13B10_TEST_PATTERN_MASK;
val |= ((pattern - 1 ) << OV13B10_TEST_PATTERN_BAR_SHIFT) |
OV13B10_TEST_PATTERN_ENABLE;
} else {
val &= ~OV13B10_TEST_PATTERN_ENABLE;
}
return ov13b10_write_reg(ov13b, OV13B10_REG_TEST_PATTERN,
OV13B10_REG_VALUE_08BIT, val);
}
static int ov13b10_set_ctrl_hflip(struct ov13b10 *ov13b, u32 ctrl_val)
{
int ret;
u32 val;
ret = ov13b10_read_reg(ov13b, OV13B10_REG_FORMAT1,
OV13B10_REG_VALUE_08BIT, &val);
if (ret)
return ret;
ret = ov13b10_write_reg(ov13b, OV13B10_REG_FORMAT1,
OV13B10_REG_VALUE_08BIT,
ctrl_val ? val & ~BIT(3 ) : val);
if (ret)
return ret;
ret = ov13b10_read_reg(ov13b, OV13B10_REG_H_WIN_OFFSET,
OV13B10_REG_VALUE_08BIT, &val);
if (ret)
return ret;
/*
* Applying cropping offset to reverse the change of Bayer order
* after mirroring image
*/
return ov13b10_write_reg(ov13b, OV13B10_REG_H_WIN_OFFSET,
OV13B10_REG_VALUE_08BIT,
ctrl_val ? ++val : val);
}
static int ov13b10_set_ctrl_vflip(struct ov13b10 *ov13b, u32 ctrl_val)
{
int ret;
u32 val;
ret = ov13b10_read_reg(ov13b, OV13B10_REG_FORMAT1,
OV13B10_REG_VALUE_08BIT, &val);
if (ret)
return ret;
ret = ov13b10_write_reg(ov13b, OV13B10_REG_FORMAT1,
OV13B10_REG_VALUE_08BIT,
ctrl_val ? val | BIT(4 ) | BIT(5 ) : val);
if (ret)
return ret;
ret = ov13b10_read_reg(ov13b, OV13B10_REG_V_WIN_OFFSET,
OV13B10_REG_VALUE_08BIT, &val);
if (ret)
return ret;
/*
* Applying cropping offset to reverse the change of Bayer order
* after flipping image
*/
return ov13b10_write_reg(ov13b, OV13B10_REG_V_WIN_OFFSET,
OV13B10_REG_VALUE_08BIT,
ctrl_val ? --val : val);
}
static int ov13b10_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov13b10 *ov13b = container_of(ctrl->handler,
struct ov13b10, ctrl_handler);
struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
s64 max;
int ret;
/* Propagate change of current control to all related controls */
switch (ctrl->id) {
case V4L2_CID_VBLANK:
/* Update max exposure while meeting expected vblanking */
max = ov13b->cur_mode->height + ctrl->val - 8 ;
__v4l2_ctrl_modify_range(ov13b->exposure,
ov13b->exposure->minimum,
max, ov13b->exposure->step, max);
break ;
}
/*
* Applying V4L2 control value only happens
* when power is up for streaming
*/
if (!pm_runtime_get_if_in_use(&client->dev))
return 0 ;
ret = 0 ;
switch (ctrl->id) {
case V4L2_CID_ANALOGUE_GAIN:
ret = ov13b10_write_reg(ov13b, OV13B10_REG_ANALOG_GAIN,
OV13B10_REG_VALUE_16BIT,
ctrl->val << 1 );
break ;
case V4L2_CID_DIGITAL_GAIN:
ret = ov13b10_update_digital_gain(ov13b, ctrl->val);
break ;
case V4L2_CID_EXPOSURE:
ret = ov13b10_write_reg(ov13b, OV13B10_REG_EXPOSURE,
OV13B10_REG_VALUE_24BIT,
ctrl->val);
break ;
case V4L2_CID_VBLANK:
ret = ov13b10_write_reg(ov13b, OV13B10_REG_VTS,
OV13B10_REG_VALUE_16BIT,
ov13b->cur_mode->height
+ ctrl->val);
break ;
case V4L2_CID_TEST_PATTERN:
ret = ov13b10_enable_test_pattern(ov13b, ctrl->val);
break ;
case V4L2_CID_HFLIP:
ov13b10_set_ctrl_hflip(ov13b, ctrl->val);
break ;
case V4L2_CID_VFLIP:
ov13b10_set_ctrl_vflip(ov13b, ctrl->val);
break ;
default :
dev_info(&client->dev,
"ctrl(id:0x%x,val:0x%x) is not handled\n" ,
ctrl->id, ctrl->val);
break ;
}
pm_runtime_put(&client->dev);
return ret;
}
static const struct v4l2_ctrl_ops ov13b10_ctrl_ops = {
.s_ctrl = ov13b10_set_ctrl,
};
static int ov13b10_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
/* Only one bayer order(GRBG) is supported */
if (code->index > 0 )
return -EINVAL;
code->code = MEDIA_BUS_FMT_SGRBG10_1X10;
return 0 ;
}
static int ov13b10_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
struct ov13b10 *ov13b = to_ov13b10(sd);
const struct ov13b10_mode *supported_modes = ov13b->supported_modes;
if (fse->index >= ov13b->supported_modes_num)
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 void ov13b10_update_pad_format(const struct ov13b10_mode *mode,
struct v4l2_subdev_format *fmt)
{
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
fmt->format.field = V4L2_FIELD_NONE;
}
static int ov13b10_do_get_pad_format(struct ov13b10 *ov13b,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct v4l2_mbus_framefmt *framefmt;
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
fmt->format = *framefmt;
} else {
ov13b10_update_pad_format(ov13b->cur_mode, fmt);
}
return 0 ;
}
static int ov13b10_get_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct ov13b10 *ov13b = to_ov13b10(sd);
int ret;
mutex_lock(&ov13b->mutex);
ret = ov13b10_do_get_pad_format(ov13b, sd_state, fmt);
mutex_unlock(&ov13b->mutex);
return ret;
}
static int
ov13b10_set_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct ov13b10 *ov13b = to_ov13b10(sd);
const struct ov13b10_mode *mode;
const struct ov13b10_mode *supported_modes = ov13b->supported_modes;
struct v4l2_mbus_framefmt *framefmt;
s32 vblank_def;
s32 vblank_min;
s64 h_blank;
s64 pixel_rate;
s64 link_freq;
mutex_lock(&ov13b->mutex);
/* Only one raw bayer(GRBG) order is supported */
if (fmt->format.code != MEDIA_BUS_FMT_SGRBG10_1X10)
fmt->format.code = MEDIA_BUS_FMT_SGRBG10_1X10;
mode = v4l2_find_nearest_size(supported_modes,
ov13b->supported_modes_num,
width, height,
fmt->format.width, fmt->format.height);
ov13b10_update_pad_format(mode, fmt);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
framefmt = v4l2_subdev_state_get_format(sd_state, fmt->pad);
*framefmt = fmt->format;
} else {
ov13b->cur_mode = mode;
__v4l2_ctrl_s_ctrl(ov13b->link_freq, mode->link_freq_index);
link_freq = link_freq_menu_items[mode->link_freq_index];
pixel_rate = link_freq_to_pixel_rate(link_freq,
ov13b->data_lanes);
__v4l2_ctrl_s_ctrl_int64(ov13b->pixel_rate, pixel_rate);
/* Update limits and set FPS to default */
vblank_def = mode->vts_def - mode->height;
vblank_min = mode->vts_min - mode->height;
__v4l2_ctrl_modify_range(ov13b->vblank, vblank_min,
OV13B10_VTS_MAX - mode->height,
1 , vblank_def);
__v4l2_ctrl_s_ctrl(ov13b->vblank, vblank_def);
h_blank = mode->ppl - mode->width;
__v4l2_ctrl_modify_range(ov13b->hblank, h_blank,
h_blank, 1 , h_blank);
}
mutex_unlock(&ov13b->mutex);
return 0 ;
}
/* Verify chip ID */
static int ov13b10_identify_module(struct ov13b10 *ov13b)
{
struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
int ret;
u32 val;
if (ov13b->identified)
return 0 ;
ret = ov13b10_read_reg(ov13b, OV13B10_REG_CHIP_ID,
OV13B10_REG_VALUE_24BIT, &val);
if (ret)
return ret;
if (val != OV13B10_CHIP_ID) {
dev_err(&client->dev, "chip id mismatch: %x!=%x\n" ,
OV13B10_CHIP_ID, val);
return -EIO;
}
ov13b->identified = true ;
return 0 ;
}
static int ov13b10_power_off(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct ov13b10 *ov13b10 = to_ov13b10(sd);
gpiod_set_value_cansleep(ov13b10->reset, 1 );
if (ov13b10->avdd)
regulator_disable(ov13b10->avdd);
clk_disable_unprepare(ov13b10->img_clk);
return 0 ;
}
static int ov13b10_power_on(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct ov13b10 *ov13b10 = to_ov13b10(sd);
int ret;
ret = clk_prepare_enable(ov13b10->img_clk);
if (ret < 0 ) {
dev_err(dev, "failed to enable imaging clock: %d" , ret);
return ret;
}
if (ov13b10->avdd) {
ret = regulator_enable(ov13b10->avdd);
if (ret < 0 ) {
dev_err(dev, "failed to enable avdd: %d" , ret);
clk_disable_unprepare(ov13b10->img_clk);
return ret;
}
}
gpiod_set_value_cansleep(ov13b10->reset, 0 );
/* 5ms to wait ready after XSHUTDN assert */
usleep_range(5000 , 5500 );
return 0 ;
}
static int ov13b10_start_streaming(struct ov13b10 *ov13b)
{
struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
const struct ov13b10_reg_list *reg_list;
int ret, link_freq_index;
ret = ov13b10_identify_module(ov13b);
if (ret)
return ret;
/* Get out of from software reset */
ret = ov13b10_write_reg(ov13b, OV13B10_REG_SOFTWARE_RST,
OV13B10_REG_VALUE_08BIT, OV13B10_SOFTWARE_RST);
if (ret) {
dev_err(&client->dev, "%s failed to set powerup registers\n" ,
__func__);
return ret;
}
link_freq_index = ov13b->cur_mode->link_freq_index;
reg_list = &link_freq_configs[link_freq_index].reg_list;
ret = ov13b10_write_reg_list(ov13b, reg_list);
if (ret) {
dev_err(&client->dev, "%s failed to set plls\n" , __func__);
return ret;
}
/* Apply default values of current mode */
reg_list = &ov13b->cur_mode->reg_list;
ret = ov13b10_write_reg_list(ov13b, reg_list);
if (ret) {
dev_err(&client->dev, "%s failed to set mode\n" , __func__);
return ret;
}
/* Apply customized values from user */
ret = __v4l2_ctrl_handler_setup(ov13b->sd.ctrl_handler);
if (ret)
return ret;
return ov13b10_write_reg(ov13b, OV13B10_REG_MODE_SELECT,
OV13B10_REG_VALUE_08BIT,
OV13B10_MODE_STREAMING);
}
/* Stop streaming */
static int ov13b10_stop_streaming(struct ov13b10 *ov13b)
{
return ov13b10_write_reg(ov13b, OV13B10_REG_MODE_SELECT,
OV13B10_REG_VALUE_08BIT, OV13B10_MODE_STANDBY);
}
static int ov13b10_set_stream(struct v4l2_subdev *sd, int enable)
{
struct ov13b10 *ov13b = to_ov13b10(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret = 0 ;
mutex_lock(&ov13b->mutex);
if (enable) {
ret = pm_runtime_resume_and_get(&client->dev);
if (ret < 0 )
goto err_unlock;
/*
* Apply default & customized values
* and then start streaming.
*/
ret = ov13b10_start_streaming(ov13b);
if (ret)
goto err_rpm_put;
} else {
ov13b10_stop_streaming(ov13b);
pm_runtime_put(&client->dev);
}
mutex_unlock(&ov13b->mutex);
return ret;
err_rpm_put:
pm_runtime_put(&client->dev);
err_unlock:
mutex_unlock(&ov13b->mutex);
return ret;
}
static int ov13b10_suspend(struct device *dev)
{
ov13b10_power_off(dev);
return 0 ;
}
static int ov13b10_resume(struct device *dev)
{
return ov13b10_power_on(dev);
}
static const struct v4l2_subdev_video_ops ov13b10_video_ops = {
.s_stream = ov13b10_set_stream,
};
static const struct v4l2_subdev_pad_ops ov13b10_pad_ops = {
.enum_mbus_code = ov13b10_enum_mbus_code,
.get_fmt = ov13b10_get_pad_format,
.set_fmt = ov13b10_set_pad_format,
.enum_frame_size = ov13b10_enum_frame_size,
};
static const struct v4l2_subdev_ops ov13b10_subdev_ops = {
.video = &ov13b10_video_ops,
.pad = &ov13b10_pad_ops,
};
static const struct media_entity_operations ov13b10_subdev_entity_ops = {
.link_validate = v4l2_subdev_link_validate,
};
static const struct v4l2_subdev_internal_ops ov13b10_internal_ops = {
.open = ov13b10_open,
};
/* Initialize control handlers */
static int ov13b10_init_controls(struct ov13b10 *ov13b)
{
struct i2c_client *client = v4l2_get_subdevdata(&ov13b->sd);
struct v4l2_fwnode_device_properties props;
struct v4l2_ctrl_handler *ctrl_hdlr;
s64 exposure_max;
s64 vblank_def;
s64 vblank_min;
s64 hblank;
s64 pixel_rate_min;
s64 pixel_rate_max;
const struct ov13b10_mode *mode;
u32 max;
int ret;
ctrl_hdlr = &ov13b->ctrl_handler;
ret = v4l2_ctrl_handler_init(ctrl_hdlr, 10 );
if (ret)
return ret;
mutex_init(&ov13b->mutex);
ctrl_hdlr->lock = &ov13b->mutex;
max = ARRAY_SIZE(link_freq_menu_items) - 1 ;
ov13b->link_freq = v4l2_ctrl_new_int_menu(ctrl_hdlr,
&ov13b10_ctrl_ops,
V4L2_CID_LINK_FREQ,
max,
0 ,
link_freq_menu_items);
if (ov13b->link_freq)
ov13b->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
pixel_rate_max = link_freq_to_pixel_rate(link_freq_menu_items[0 ],
ov13b->data_lanes);
pixel_rate_min = 0 ;
/* By default, PIXEL_RATE is read only */
ov13b->pixel_rate = v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
V4L2_CID_PIXEL_RATE,
pixel_rate_min, pixel_rate_max,
1 , pixel_rate_max);
mode = ov13b->cur_mode;
vblank_def = mode->vts_def - mode->height;
vblank_min = mode->vts_min - mode->height;
ov13b->vblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
V4L2_CID_VBLANK,
vblank_min,
OV13B10_VTS_MAX - mode->height, 1 ,
vblank_def);
hblank = mode->ppl - mode->width;
ov13b->hblank = v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
V4L2_CID_HBLANK,
hblank, hblank, 1 , hblank);
if (ov13b->hblank)
ov13b->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
exposure_max = mode->vts_def - 8 ;
ov13b->exposure = v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
V4L2_CID_EXPOSURE,
OV13B10_EXPOSURE_MIN,
exposure_max, OV13B10_EXPOSURE_STEP,
exposure_max);
v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
OV13B10_ANA_GAIN_MIN, OV13B10_ANA_GAIN_MAX,
OV13B10_ANA_GAIN_STEP, OV13B10_ANA_GAIN_DEFAULT);
/* Digital gain */
v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops, V4L2_CID_DIGITAL_GAIN,
OV13B10_DGTL_GAIN_MIN, OV13B10_DGTL_GAIN_MAX,
OV13B10_DGTL_GAIN_STEP, OV13B10_DGTL_GAIN_DEFAULT);
v4l2_ctrl_new_std_menu_items(ctrl_hdlr, &ov13b10_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(ov13b10_test_pattern_menu) - 1 ,
0 , 0 , ov13b10_test_pattern_menu);
v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
V4L2_CID_HFLIP, 0 , 1 , 1 , 0 );
v4l2_ctrl_new_std(ctrl_hdlr, &ov13b10_ctrl_ops,
V4L2_CID_VFLIP, 0 , 1 , 1 , 0 );
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, &ov13b10_ctrl_ops,
&props);
if (ret)
goto error;
ov13b->sd.ctrl_handler = ctrl_hdlr;
return 0 ;
error:
v4l2_ctrl_handler_free(ctrl_hdlr);
mutex_destroy(&ov13b->mutex);
return ret;
}
static void ov13b10_free_controls(struct ov13b10 *ov13b)
{
v4l2_ctrl_handler_free(ov13b->sd.ctrl_handler);
mutex_destroy(&ov13b->mutex);
}
static int ov13b10_get_pm_resources(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct ov13b10 *ov13b = to_ov13b10(sd);
int ret;
ov13b->reset = devm_gpiod_get_optional(dev, "reset" , GPIOD_OUT_LOW);
if (IS_ERR(ov13b->reset))
return dev_err_probe(dev, PTR_ERR(ov13b->reset),
"failed to get reset gpio\n" );
ov13b->img_clk = devm_clk_get_optional(dev, NULL);
if (IS_ERR(ov13b->img_clk))
return dev_err_probe(dev, PTR_ERR(ov13b->img_clk),
"failed to get imaging clock\n" );
ov13b->avdd = devm_regulator_get_optional(dev, "avdd" );
if (IS_ERR(ov13b->avdd)) {
ret = PTR_ERR(ov13b->avdd);
ov13b->avdd = NULL;
if (ret != -ENODEV)
return dev_err_probe(dev, ret,
"failed to get avdd regulator\n" );
}
return 0 ;
}
static int ov13b10_check_hwcfg(struct device *dev, struct ov13b10 *ov13b)
{
struct v4l2_fwnode_endpoint bus_cfg = {
.bus_type = V4L2_MBUS_CSI2_DPHY
};
struct fwnode_handle *ep;
struct fwnode_handle *fwnode = dev_fwnode(dev);
unsigned int i, j;
int ret;
u32 ext_clk;
u8 dlane;
if (!fwnode)
return -ENXIO;
ep = fwnode_graph_get_next_endpoint(fwnode, NULL);
if (!ep)
return -EPROBE_DEFER;
ret = fwnode_property_read_u32(dev_fwnode(dev), "clock-frequency" ,
&ext_clk);
if (ret) {
dev_err(dev, "can't get clock frequency" );
return ret;
}
if (ext_clk != OV13B10_EXT_CLK) {
dev_err(dev, "external clock %d is not supported" ,
ext_clk);
return -EINVAL;
}
ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg);
fwnode_handle_put(ep);
if (ret)
return ret;
dlane = bus_cfg.bus.mipi_csi2.num_data_lanes;
switch (dlane) {
case OV13B10_4_DATA_LANES:
ov13b->supported_modes = supported_4_lanes_modes;
ov13b->supported_modes_num =
ARRAY_SIZE(supported_4_lanes_modes);
break ;
case OV13B10_2_DATA_LANES:
ov13b->supported_modes = supported_2_lanes_modes;
ov13b->supported_modes_num =
ARRAY_SIZE(supported_2_lanes_modes);
break ;
default :
dev_err(dev, "number of CSI2 data lanes %d is not supported" ,
dlane);
ret = -EINVAL;
goto out_err;
}
ov13b->data_lanes = dlane;
ov13b->cur_mode = ov13b->supported_modes;
dev_dbg(dev, "%u lanes with %u modes selected\n" ,
ov13b->data_lanes, ov13b->supported_modes_num);
if (!bus_cfg.nr_of_link_frequencies) {
dev_err(dev, "no link frequencies defined" );
ret = -EINVAL;
goto out_err;
}
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 out_err;
}
}
out_err:
v4l2_fwnode_endpoint_free(&bus_cfg);
return ret;
}
static int ov13b10_probe(struct i2c_client *client)
{
struct ov13b10 *ov13b;
bool full_power;
int ret;
ov13b = devm_kzalloc(&client->dev, sizeof (*ov13b), GFP_KERNEL);
if (!ov13b)
return -ENOMEM;
/* Check HW config */
ret = ov13b10_check_hwcfg(&client->dev, ov13b);
if (ret) {
dev_err(&client->dev, "failed to check hwcfg: %d" , ret);
return ret;
}
/* Initialize subdev */
v4l2_i2c_subdev_init(&ov13b->sd, client, &ov13b10_subdev_ops);
ret = ov13b10_get_pm_resources(&client->dev);
if (ret)
return ret;
full_power = acpi_dev_state_d0(&client->dev);
if (full_power) {
ret = ov13b10_power_on(&client->dev);
if (ret) {
dev_err(&client->dev, "failed to power on\n" );
return ret;
}
/* Check module identity */
ret = ov13b10_identify_module(ov13b);
if (ret) {
dev_err(&client->dev, "failed to find sensor: %d\n" , ret);
goto error_power_off;
}
}
ret = ov13b10_init_controls(ov13b);
if (ret)
goto error_power_off;
/* Initialize subdev */
ov13b->sd.internal_ops = &ov13b10_internal_ops;
ov13b->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
ov13b->sd.entity.ops = &ov13b10_subdev_entity_ops;
ov13b->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
/* Initialize source pad */
ov13b->pad.flags = MEDIA_PAD_FL_SOURCE;
ret = media_entity_pads_init(&ov13b->sd.entity, 1 , &ov13b->pad);
if (ret) {
dev_err(&client->dev, "%s failed:%d\n" , __func__, ret);
goto error_handler_free;
}
/*
* Device is already turned on by i2c-core with ACPI domain PM.
* Enable runtime PM and turn off the device.
*/
/* Set the device's state to active if it's in D0 state. */
if (full_power)
pm_runtime_set_active(&client->dev);
pm_runtime_enable(&client->dev);
pm_runtime_idle(&client->dev);
ret = v4l2_async_register_subdev_sensor(&ov13b->sd);
if (ret < 0 )
goto error_media_entity_runtime_pm;
return 0 ;
error_media_entity_runtime_pm:
pm_runtime_disable(&client->dev);
if (full_power)
pm_runtime_set_suspended(&client->dev);
media_entity_cleanup(&ov13b->sd.entity);
error_handler_free:
ov13b10_free_controls(ov13b);
dev_err(&client->dev, "%s failed:%d\n" , __func__, ret);
error_power_off:
ov13b10_power_off(&client->dev);
return ret;
}
static void ov13b10_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov13b10 *ov13b = to_ov13b10(sd);
v4l2_async_unregister_subdev(sd);
media_entity_cleanup(&sd->entity);
ov13b10_free_controls(ov13b);
pm_runtime_disable(&client->dev);
pm_runtime_set_suspended(&client->dev);
}
static DEFINE_RUNTIME_DEV_PM_OPS(ov13b10_pm_ops, ov13b10_suspend,
ov13b10_resume, NULL);
#ifdef CONFIG_ACPI
static const struct acpi_device_id ov13b10_acpi_ids[] = {
{"OVTIDB10" },
{"OVTI13B1" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(acpi, ov13b10_acpi_ids);
#endif
static struct i2c_driver ov13b10_i2c_driver = {
.driver = {
.name = "ov13b10" ,
.pm = pm_ptr(&ov13b10_pm_ops),
.acpi_match_table = ACPI_PTR(ov13b10_acpi_ids),
},
.probe = ov13b10_probe,
.remove = ov13b10_remove,
.flags = I2C_DRV_ACPI_WAIVE_D0_PROBE,
};
module_i2c_driver(ov13b10_i2c_driver);
MODULE_AUTHOR("Kao, Arec <arec.kao@intel.com>" );
MODULE_DESCRIPTION("Omnivision ov13b10 sensor driver" );
MODULE_LICENSE("GPL v2" );
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(vorverarbeitet am 2026-06-08)
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