Qortal/Brooklyn
3
0
Fork 1
mirror of https://github.com/Qortal/Brooklyn.git synced 2025-01-31 15:22:18 +00:00
Code Issues Projects Releases Wiki Activity
8b701010de
Brooklyn/drivers/media/i2c/ov2311.c
Raziel K. Crowe 758ed8d513 cleaning up the git
2022-04-02 18:12:00 +05:00

1182 lines
28 KiB
C
Raw Blame History

// SPDX-License-Identifier: GPL-2.0
/*
* Omnivision OV2311 1600x1300 global shutter image sensor driver
* Copyright (C) 2022, Raspberry Pi (Trading) Ltd
*
* This driver is based on the OV9281 driver.
* Copyright (C) 2017 Fuzhou Rockchip Electronics Co., Ltd.
* Register configuration from
* https://github.com/ArduCAM/ArduCAM_USB_Camera_Shield/tree/master/Config/USB3.0_UC-425_Rev.C%2BUC-628_Rev.B/OV2311
* with additional exposure and gain register information from
* https://github.com/renesas-rcar/linux-bsp/tree/0cf6e36f5bf49e1c2aab87139ec5b588623c56f8/drivers/media/i2c/imagers
*/
#include <linux/clk.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <media/media-entity.h>
#include <media/v4l2-async.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-event.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>
#define OV2311_LINK_FREQ 400000000
#define OV2311_LANES 2
/* pixel rate = link frequency * 2 * lanes / BITS_PER_SAMPLE */
#define OV2311_PIXEL_RATE_10BIT (OV2311_LINK_FREQ * 2 * \
OV2311_LANES / 10)
#define OV2311_PIXEL_RATE_8BIT (OV2311_LINK_FREQ * 2 * \
OV2311_LANES / 8)
#define OV2311_XVCLK_FREQ 24000000
#define CHIP_ID 0x2311
#define OV2311_REG_CHIP_ID 0x300a
#define OV2311_REG_CTRL_MODE 0x0100
#define OV2311_MODE_SW_STANDBY 0x0
#define OV2311_MODE_STREAMING BIT(0)
#define OV2311_REG_V_FLIP 0x3820
#define OV2311_REG_H_FLIP 0x3821
#define OV2311_FLIP_BIT BIT(2)
#define OV2311_REG_EXPOSURE 0x3501
#define OV2311_EXPOSURE_MIN 4
#define OV2311_EXPOSURE_STEP 1
#define OV2311_VTS_MAX 0xffff
#define OV2311_REG_GAIN_H 0x3508
#define OV2311_REG_GAIN_L 0x3509
#define OV2311_GAIN_H_MASK 0x07
#define OV2311_GAIN_H_SHIFT 8
#define OV2311_GAIN_L_MASK 0xff
#define OV2311_GAIN_MIN 0x100
#define OV2311_GAIN_MAX 0x780
#define OV2311_GAIN_STEP 1
#define OV2311_GAIN_DEFAULT OV2311_GAIN_MIN
#define OV2311_REG_TEST_PATTERN 0x5e00
#define OV2311_TEST_PATTERN_ENABLE 0x80
#define OV2311_TEST_PATTERN_DISABLE 0x0
#define OV2311_REG_VTS 0x380e
/*
* OV2311 native and active pixel array size.
* Datasheet not available to confirm these values. renesas-rcar linux-bsp tree
* has these values.
*/
#define OV2311_NATIVE_WIDTH 1616U
#define OV2311_NATIVE_HEIGHT 1316U
#define OV2311_PIXEL_ARRAY_LEFT 8U
#define OV2311_PIXEL_ARRAY_TOP 8U
#define OV2311_PIXEL_ARRAY_WIDTH 1600U
#define OV2311_PIXEL_ARRAY_HEIGHT 1300U
#define REG_NULL 0xFFFF
#define OV2311_REG_VALUE_08BIT 1
#define OV2311_REG_VALUE_16BIT 2
#define OV2311_REG_VALUE_24BIT 3
#define OV2311_NAME "ov2311"
static const char * const ov2311_supply_names[] = {
"avdd", /* Analog power */
"dovdd", /* Digital I/O power */
"dvdd", /* Digital core power */
};
#define OV2311_NUM_SUPPLIES ARRAY_SIZE(ov2311_supply_names)
struct regval {
u16 addr;
u8 val;
};
struct ov2311_mode {
u32 width;
u32 height;
u32 hts_def;
u32 vts_def;
u32 exp_def;
struct v4l2_rect crop;
const struct regval *reg_list;
};
struct ov2311 {
struct i2c_client *client;
struct clk *xvclk;
struct gpio_desc *reset_gpio;
struct gpio_desc *pwdn_gpio;
struct regulator_bulk_data supplies[OV2311_NUM_SUPPLIES];
struct v4l2_subdev subdev;
struct media_pad pad;
struct v4l2_ctrl_handler ctrl_handler;
struct v4l2_ctrl *exposure;
struct v4l2_ctrl *hblank;
struct v4l2_ctrl *vblank;
struct v4l2_ctrl *pixel_rate;
/*
* Mutex for serialized access:
* Protect sensor module set pad format and start/stop streaming safely.
*/
struct mutex mutex;
/* Streaming on/off */
bool streaming;
const struct ov2311_mode *cur_mode;
u32 code;
};
#define to_ov2311(sd) container_of(sd, struct ov2311, subdev)
/*
* Xclk 24Mhz
* max_framerate 60fps for 10 bit, 74.6fps for 8 bit.
*/
static const struct regval ov2311_common_regs[] = {
{ 0x0103, 0x01 },
{ 0x0100, 0x00 },
{ 0x0300, 0x01 },
{ 0x0302, 0x32 },
{ 0x0303, 0x00 },
{ 0x0304, 0x03 },
{ 0x0305, 0x02 },
{ 0x0306, 0x01 },
{ 0x030e, 0x04 },
{ 0x3001, 0x02 },
{ 0x3004, 0x00 },
{ 0x3005, 0x00 },
{ 0x3006, 0x00 },
{ 0x3011, 0x0d },
{ 0x3014, 0x04 },
{ 0x301c, 0xf0 },
{ 0x3020, 0x00 },
{ 0x302c, 0x00 },
{ 0x302d, 0x12 },
{ 0x302e, 0x4c },
{ 0x302f, 0x8c },
{ 0x3030, 0x10 },
{ 0x303f, 0x03 },
{ 0x3103, 0x00 },
{ 0x3106, 0x08 },
{ 0x31ff, 0x01 },
{ 0x3501, 0x05 },
{ 0x3502, 0xba },
{ 0x3506, 0x00 },
{ 0x3507, 0x00 },
{ 0x3620, 0x67 },
{ 0x3633, 0x78 },
{ 0x3666, 0x00 },
{ 0x3670, 0x68 },
{ 0x3674, 0x10 },
{ 0x3675, 0x00 },
{ 0x3680, 0x84 },
{ 0x36a2, 0x04 },
{ 0x36a3, 0x80 },
{ 0x36b0, 0x00 },
{ 0x3700, 0x35 },
{ 0x3704, 0x59 },
{ 0x3712, 0x00 },
{ 0x3713, 0x02 },
{ 0x379b, 0x01 },
{ 0x379c, 0x10 },
{ 0x3800, 0x00 },
{ 0x3801, 0x00 },
{ 0x3804, 0x06 },
{ 0x3805, 0x4f },
{ 0x3810, 0x00 },
{ 0x3811, 0x08 },
{ 0x3812, 0x00 },
{ 0x3813, 0x08 },
{ 0x3814, 0x11 },
{ 0x3815, 0x11 },
{ 0x3816, 0x00 },
{ 0x3817, 0x00 },
{ 0x3818, 0x04 },
{ 0x3819, 0x00 },
{ 0x382b, 0x5a },
{ 0x382c, 0x09 },
{ 0x382d, 0x9a },
{ 0x3882, 0x02 },
{ 0x3883, 0x6c },
{ 0x3885, 0x07 },
{ 0x389d, 0x03 },
{ 0x38a6, 0x00 },
{ 0x38a7, 0x01 },
{ 0x38b3, 0x07 },
{ 0x38b1, 0x00 },
{ 0x38e5, 0x02 },
{ 0x38e7, 0x00 },
{ 0x38e8, 0x00 },
{ 0x3910, 0xff },
{ 0x3911, 0xff },
{ 0x3912, 0x08 },
{ 0x3913, 0x00 },
{ 0x3914, 0x00 },
{ 0x3915, 0x00 },
{ 0x391c, 0x00 },
{ 0x3920, 0xa5 },
{ 0x3921, 0x00 },
{ 0x3922, 0x00 },
{ 0x3923, 0x00 },
{ 0x3924, 0x05 },
{ 0x3925, 0x00 },
{ 0x3926, 0x00 },
{ 0x3927, 0x00 },
{ 0x3928, 0x1a },
{ 0x392d, 0x05 },
{ 0x392e, 0xf2 },
{ 0x392f, 0x40 },
{ 0x4001, 0x00 },
{ 0x4003, 0x40 },
{ 0x4008, 0x12 },
{ 0x4009, 0x1b },
{ 0x400c, 0x0c },
{ 0x400d, 0x13 },
{ 0x4010, 0xf0 },
{ 0x4011, 0x00 },
{ 0x4016, 0x00 },
{ 0x4017, 0x04 },
{ 0x4042, 0x11 },
{ 0x4043, 0x70 },
{ 0x4045, 0x00 },
{ 0x4409, 0x5f },
{ 0x450b, 0x00 },
{ 0x4600, 0x00 },
{ 0x4601, 0xa0 },
{ 0x4708, 0x09 },
{ 0x470c, 0x81 },
{ 0x4710, 0x06 },
{ 0x4711, 0x00 },
{ 0x4800, 0x00 },
{ 0x481f, 0x30 },
{ 0x4837, 0x14 },
{ 0x4f00, 0x00 },
{ 0x4f07, 0x00 },
{ 0x4f08, 0x03 },
{ 0x4f09, 0x08 },
{ 0x4f0c, 0x06 },
{ 0x4f0d, 0x02 },
{ 0x4f10, 0x00 },
{ 0x4f11, 0x00 },
{ 0x4f12, 0x07 },
{ 0x4f13, 0xe2 },
{ 0x5000, 0x9f },
{ 0x5001, 0x20 },
{ 0x5026, 0x00 },
{ 0x5c00, 0x00 },
{ 0x5c01, 0x2c },
{ 0x5c02, 0x00 },
{ 0x5c03, 0x7f },
{ 0x5e00, 0x00 },
{ 0x5e01, 0x41 },
{REG_NULL, 0x00},
};
static const struct regval ov2311_1600x1300_regs[] = {
{ 0x3802, 0x00 },
{ 0x3803, 0x00 },
{ 0x3806, 0x05 },
{ 0x3807, 0x23 },
{ 0x3808, 0x06 },
{ 0x3809, 0x40 },
{ 0x380a, 0x05 },
{ 0x380b, 0x14 },
{ 0x380c, 0x03 },
{ 0x380d, 0x88 },
{REG_NULL, 0x00},
};
static const struct regval ov2311_1600x1080_regs[] = {
{ 0x3802, 0x00 },
{ 0x3803, 0x6e },
{ 0x3806, 0x04 },
{ 0x3807, 0xae },
{ 0x3808, 0x06 },
{ 0x3809, 0x40 },
{ 0x380a, 0x04 },
{ 0x380b, 0x38 },
{ 0x380c, 0x03 },
{ 0x380d, 0x88 },
{ 0x5d01, 0x00 },
{ 0x5d02, 0x04 },
{ 0x5d03, 0x00 },
{ 0x5d04, 0x04 },
{ 0x5d05, 0x00 },
{REG_NULL, 0x00},
};
static const struct regval op_10bit[] = {
{ 0x030d, 0x5a },
{ 0x3662, 0x65 },
{REG_NULL, 0x00},
};
static const struct regval op_8bit[] = {
{ 0x030d, 0x70 },
{ 0x3662, 0x67 },
{REG_NULL, 0x00},
};
static const struct ov2311_mode supported_modes[] = {
{
.width = 1600,
.height = 1300,
.exp_def = 0x0320,
.hts_def = (0x0388 * 2),/* Registers 0x380c / 0x380d * 2 */
.vts_def = 0x5c2, /* Registers 0x380e / 0x380f
* 60fps for 10bpp
*/
.crop = {
.left = OV2311_PIXEL_ARRAY_LEFT,
.top = OV2311_PIXEL_ARRAY_TOP,
.width = 1600,
.height = 1300
},
.reg_list = ov2311_1600x1300_regs,
},
{
.width = 1600,
.height = 1080,
.exp_def = 0x0320,
.hts_def = (0x0388 * 2),/* Registers 0x380c / 0x380d * 2 */
.vts_def = 0x5c2, /* Registers 0x380e / 0x380f
* 60fps for 10bpp
*/
.crop = {
.left = OV2311_PIXEL_ARRAY_LEFT,
.top = 110 + OV2311_PIXEL_ARRAY_TOP,
.width = 1600,
.height = 1080
},
.reg_list = ov2311_1600x1080_regs,
},
};
static const s64 link_freq_menu_items[] = {
OV2311_LINK_FREQ
};
static const char * const ov2311_test_pattern_menu[] = {
"Disabled",
"Vertical Color Bar Type 1",
"Vertical Color Bar Type 2",
"Vertical Color Bar Type 3",
"Vertical Color Bar Type 4"
};
/* Write registers up to 4 at a time */
static int ov2311_write_reg(struct i2c_client *client, u16 reg,
u32 len, u32 val)
{
u32 buf_i, val_i;
u8 buf[6];
u8 *val_p;
__be32 val_be;
if (len > 4)
return -EINVAL;
buf[0] = reg >> 8;
buf[1] = reg & 0xff;
val_be = cpu_to_be32(val);
val_p = (u8 *)&val_be;
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;
}
static int ov2311_write_array(struct i2c_client *client,
const struct regval *regs)
{
u32 i;
int ret = 0;
for (i = 0; ret == 0 && regs[i].addr != REG_NULL; i++)
ret = ov2311_write_reg(client, regs[i].addr,
OV2311_REG_VALUE_08BIT, regs[i].val);
return ret;
}
/* Read registers up to 4 at a time */
static int ov2311_read_reg(struct i2c_client *client, u16 reg, unsigned int len,
u32 *val)
{
struct i2c_msg msgs[2];
u8 *data_be_p;
__be32 data_be = 0;
__be16 reg_addr_be = cpu_to_be16(reg);
int ret;
if (len > 4 || !len)
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 *)&reg_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;
}
static int ov2311_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct ov2311 *ov2311 = to_ov2311(sd);
const struct ov2311_mode *mode;
s64 h_blank, vblank_def, pixel_rate;
mutex_lock(&ov2311->mutex);
mode = v4l2_find_nearest_size(supported_modes,
ARRAY_SIZE(supported_modes),
width, height,
fmt->format.width,
fmt->format.height);
if (fmt->format.code != MEDIA_BUS_FMT_Y8_1X8)
fmt->format.code = MEDIA_BUS_FMT_Y10_1X10;
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.field = V4L2_FIELD_NONE;
fmt->format.colorspace = V4L2_COLORSPACE_RAW;
fmt->format.ycbcr_enc =
V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
fmt->format.quantization =
V4L2_MAP_QUANTIZATION_DEFAULT(true, fmt->format.colorspace,
fmt->format.ycbcr_enc);
fmt->format.xfer_func =
V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
*v4l2_subdev_get_try_format(sd, sd_state, fmt->pad) =
fmt->format;
} else {
ov2311->cur_mode = mode;
ov2311->code = fmt->format.code;
h_blank = mode->hts_def - mode->width;
__v4l2_ctrl_modify_range(ov2311->hblank, h_blank,
h_blank, 1, h_blank);
__v4l2_ctrl_s_ctrl(ov2311->hblank, h_blank);
vblank_def = mode->vts_def - mode->height;
__v4l2_ctrl_modify_range(ov2311->vblank, vblank_def,
OV2311_VTS_MAX - mode->height,
1, vblank_def);
__v4l2_ctrl_s_ctrl(ov2311->vblank, vblank_def);
pixel_rate = (fmt->format.code == MEDIA_BUS_FMT_Y10_1X10) ?
OV2311_PIXEL_RATE_10BIT : OV2311_PIXEL_RATE_8BIT;
__v4l2_ctrl_modify_range(ov2311->pixel_rate, pixel_rate,
pixel_rate, 1, pixel_rate);
}
mutex_unlock(&ov2311->mutex);
return 0;
}
static int ov2311_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *fmt)
{
struct ov2311 *ov2311 = to_ov2311(sd);
const struct ov2311_mode *mode = ov2311->cur_mode;
mutex_lock(&ov2311->mutex);
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
fmt->format = *v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
} else {
fmt->format.width = mode->width;
fmt->format.height = mode->height;
fmt->format.code = ov2311->code;
fmt->format.field = V4L2_FIELD_NONE;
fmt->format.colorspace = V4L2_COLORSPACE_SRGB;
fmt->format.ycbcr_enc =
V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->format.colorspace);
fmt->format.quantization =
V4L2_MAP_QUANTIZATION_DEFAULT(true,
fmt->format.colorspace,
fmt->format.ycbcr_enc);
fmt->format.xfer_func =
V4L2_MAP_XFER_FUNC_DEFAULT(fmt->format.colorspace);
}
mutex_unlock(&ov2311->mutex);
return 0;
}
static int ov2311_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
switch (code->index) {
default:
return -EINVAL;
case 0:
code->code = MEDIA_BUS_FMT_Y10_1X10;
break;
case 1:
code->code = MEDIA_BUS_FMT_Y8_1X8;
break;
}
return 0;
}
static int ov2311_enum_frame_sizes(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
if (fse->index >= ARRAY_SIZE(supported_modes))
return -EINVAL;
if (fse->code != MEDIA_BUS_FMT_Y10_1X10 &&
fse->code != MEDIA_BUS_FMT_Y8_1X8)
return -EINVAL;
fse->min_width = supported_modes[fse->index].width;
fse->max_width = supported_modes[fse->index].width;
fse->max_height = supported_modes[fse->index].height;
fse->min_height = supported_modes[fse->index].height;
return 0;
}
static int ov2311_enable_test_pattern(struct ov2311 *ov2311, u32 pattern)
{
u32 val;
if (pattern)
val = (pattern - 1) | OV2311_TEST_PATTERN_ENABLE;
else
val = OV2311_TEST_PATTERN_DISABLE;
return ov2311_write_reg(ov2311->client, OV2311_REG_TEST_PATTERN,
OV2311_REG_VALUE_08BIT, val);
}
static const struct v4l2_rect *
__ov2311_get_pad_crop(struct ov2311 *ov2311, struct v4l2_subdev_state *sd_state,
unsigned int pad, enum v4l2_subdev_format_whence which)
{
switch (which) {
case V4L2_SUBDEV_FORMAT_TRY:
return v4l2_subdev_get_try_crop(&ov2311->subdev, sd_state, pad);
case V4L2_SUBDEV_FORMAT_ACTIVE:
return &ov2311->cur_mode->crop;
}
return NULL;
}
static int ov2311_get_selection(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_selection *sel)
{
switch (sel->target) {
case V4L2_SEL_TGT_CROP: {
struct ov2311 *ov2311 = to_ov2311(sd);
mutex_lock(&ov2311->mutex);
sel->r = *__ov2311_get_pad_crop(ov2311, sd_state, sel->pad,
sel->which);
mutex_unlock(&ov2311->mutex);
return 0;
}
case V4L2_SEL_TGT_NATIVE_SIZE:
sel->r.top = 0;
sel->r.left = 0;
sel->r.width = OV2311_NATIVE_WIDTH;
sel->r.height = OV2311_NATIVE_HEIGHT;
return 0;
case V4L2_SEL_TGT_CROP_DEFAULT:
case V4L2_SEL_TGT_CROP_BOUNDS:
sel->r.top = OV2311_PIXEL_ARRAY_TOP;
sel->r.left = OV2311_PIXEL_ARRAY_LEFT;
sel->r.width = OV2311_PIXEL_ARRAY_WIDTH;
sel->r.height = OV2311_PIXEL_ARRAY_HEIGHT;
return 0;
}
return -EINVAL;
}
static int ov2311_start_stream(struct ov2311 *ov2311)
{
int ret;
ret = ov2311_write_array(ov2311->client, ov2311_common_regs);
if (ret)
return ret;
ret = ov2311_write_array(ov2311->client, ov2311->cur_mode->reg_list);
if (ret)
return ret;
if (ov2311->code == MEDIA_BUS_FMT_Y10_1X10)
ret = ov2311_write_array(ov2311->client, op_10bit);
else
ret = ov2311_write_array(ov2311->client, op_8bit);
if (ret)
return ret;
/* In case these controls are set before streaming */
mutex_unlock(&ov2311->mutex);
ret = v4l2_ctrl_handler_setup(&ov2311->ctrl_handler);
mutex_lock(&ov2311->mutex);
if (ret)
return ret;
return ov2311_write_reg(ov2311->client, OV2311_REG_CTRL_MODE,
OV2311_REG_VALUE_08BIT, OV2311_MODE_STREAMING);
}
static int ov2311_stop_stream(struct ov2311 *ov2311)
{
return ov2311_write_reg(ov2311->client, OV2311_REG_CTRL_MODE,
OV2311_REG_VALUE_08BIT, OV2311_MODE_SW_STANDBY);
}
static int ov2311_s_stream(struct v4l2_subdev *sd, int enable)
{
struct ov2311 *ov2311 = to_ov2311(sd);
struct i2c_client *client = ov2311->client;
int ret = 0;
mutex_lock(&ov2311->mutex);
if (ov2311->streaming == enable) {
mutex_unlock(&ov2311->mutex);
return 0;
}
if (enable) {
ret = pm_runtime_resume_and_get(&client->dev);
if (ret < 0)
goto unlock_and_return;
ret = ov2311_start_stream(ov2311);
if (ret) {
v4l2_err(sd, "start stream failed while write regs\n");
pm_runtime_put(&client->dev);
goto unlock_and_return;
}
} else {
ov2311_stop_stream(ov2311);
pm_runtime_put(&client->dev);
}
ov2311->streaming = enable;
unlock_and_return:
mutex_unlock(&ov2311->mutex);
return ret;
}
static int ov2311_power_on(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct ov2311 *ov2311 = to_ov2311(sd);
int ret;
ret = clk_set_rate(ov2311->xvclk, OV2311_XVCLK_FREQ);
if (ret < 0)
dev_warn(dev, "Failed to set xvclk rate (24MHz)\n");
if (clk_get_rate(ov2311->xvclk) != OV2311_XVCLK_FREQ)
dev_warn(dev, "xvclk mismatched, modes are based on 24MHz - rate is %lu\n",
clk_get_rate(ov2311->xvclk));
ret = clk_prepare_enable(ov2311->xvclk);
if (ret < 0) {
dev_err(dev, "Failed to enable xvclk\n");
return ret;
}
gpiod_set_value_cansleep(ov2311->reset_gpio, 0);
ret = regulator_bulk_enable(OV2311_NUM_SUPPLIES, ov2311->supplies);
if (ret < 0) {
dev_err(dev, "Failed to enable regulators\n");
goto disable_clk;
}
gpiod_set_value_cansleep(ov2311->reset_gpio, 1);
usleep_range(500, 1000);
gpiod_set_value_cansleep(ov2311->pwdn_gpio, 1);
usleep_range(1000, 2000);
return 0;
disable_clk:
clk_disable_unprepare(ov2311->xvclk);
return ret;
}
static int ov2311_power_off(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct ov2311 *ov2311 = to_ov2311(sd);
gpiod_set_value_cansleep(ov2311->pwdn_gpio, 0);
clk_disable_unprepare(ov2311->xvclk);
gpiod_set_value_cansleep(ov2311->reset_gpio, 0);
regulator_bulk_disable(OV2311_NUM_SUPPLIES, ov2311->supplies);
return 0;
}
static int ov2311_runtime_resume(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct ov2311 *ov2311 = to_ov2311(sd);
int ret;
if (ov2311->streaming) {
ret = ov2311_start_stream(ov2311);
if (ret)
goto error;
}
return 0;
error:
ov2311_stop_stream(ov2311);
ov2311->streaming = 0;
return ret;
}
static int ov2311_runtime_suspend(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct ov2311 *ov2311 = to_ov2311(sd);
if (ov2311->streaming)
ov2311_stop_stream(ov2311);
return 0;
}
static int ov2311_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct ov2311 *ov2311 = to_ov2311(sd);
struct v4l2_mbus_framefmt *try_fmt =
v4l2_subdev_get_try_format(sd, fh->state, 0);
const struct ov2311_mode *def_mode = &supported_modes[0];
mutex_lock(&ov2311->mutex);
/* Initialize try_fmt */
try_fmt->width = def_mode->width;
try_fmt->height = def_mode->height;
try_fmt->code = MEDIA_BUS_FMT_Y10_1X10;
try_fmt->field = V4L2_FIELD_NONE;
try_fmt->colorspace = V4L2_COLORSPACE_RAW;
try_fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(try_fmt->colorspace);
try_fmt->quantization =
V4L2_MAP_QUANTIZATION_DEFAULT(true, try_fmt->colorspace,
try_fmt->ycbcr_enc);
try_fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(try_fmt->colorspace);
mutex_unlock(&ov2311->mutex);
/* No crop or compose */
return 0;
}
static const struct dev_pm_ops ov2311_pm_ops = {
SET_RUNTIME_PM_OPS(ov2311_runtime_suspend, ov2311_runtime_resume, NULL)
SET_RUNTIME_PM_OPS(ov2311_power_off, ov2311_power_on, NULL)
};
static const struct v4l2_subdev_internal_ops ov2311_internal_ops = {
.open = ov2311_open,
};
static const struct v4l2_subdev_core_ops ov2311_core_ops = {
.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
};
static const struct v4l2_subdev_video_ops ov2311_video_ops = {
.s_stream = ov2311_s_stream,
};
static const struct v4l2_subdev_pad_ops ov2311_pad_ops = {
.enum_mbus_code = ov2311_enum_mbus_code,
.enum_frame_size = ov2311_enum_frame_sizes,
.get_fmt = ov2311_get_fmt,
.set_fmt = ov2311_set_fmt,
.get_selection = ov2311_get_selection,
};
static const struct v4l2_subdev_ops ov2311_subdev_ops = {
.core = &ov2311_core_ops,
.video = &ov2311_video_ops,
.pad = &ov2311_pad_ops,
};
static int ov2311_set_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov2311 *ov2311 = container_of(ctrl->handler,
struct ov2311, ctrl_handler);
struct i2c_client *client = ov2311->client;
s64 max;
int ret = 0;
/* Propagate change of current control to all related controls */
switch (ctrl->id) {
case V4L2_CID_VBLANK:
/* Update max exposure while meeting expected vblanking */
max = ov2311->cur_mode->height + ctrl->val - 4;
__v4l2_ctrl_modify_range(ov2311->exposure,
ov2311->exposure->minimum, max,
ov2311->exposure->step,
ov2311->exposure->default_value);
break;
}
if (pm_runtime_get(&client->dev) <= 0)
return 0;
switch (ctrl->id) {
case V4L2_CID_EXPOSURE:
ret = ov2311_write_reg(ov2311->client, OV2311_REG_EXPOSURE,
OV2311_REG_VALUE_16BIT, ctrl->val);
break;
case V4L2_CID_ANALOGUE_GAIN:
ret = ov2311_write_reg(ov2311->client, OV2311_REG_GAIN_H,
OV2311_REG_VALUE_08BIT,
(ctrl->val >> OV2311_GAIN_H_SHIFT) &
OV2311_GAIN_H_MASK);
ret |= ov2311_write_reg(ov2311->client, OV2311_REG_GAIN_L,
OV2311_REG_VALUE_08BIT,
ctrl->val & OV2311_GAIN_L_MASK);
break;
case V4L2_CID_VBLANK:
ret = ov2311_write_reg(ov2311->client, OV2311_REG_VTS,
OV2311_REG_VALUE_16BIT,
ctrl->val + ov2311->cur_mode->height);
break;
case V4L2_CID_TEST_PATTERN:
ret = ov2311_enable_test_pattern(ov2311, ctrl->val);
break;
case V4L2_CID_HFLIP:
ret = ov2311_write_reg(ov2311->client, OV2311_REG_H_FLIP,
OV2311_REG_VALUE_08BIT,
ctrl->val ? OV2311_FLIP_BIT : 0);
break;
case V4L2_CID_VFLIP:
ret = ov2311_write_reg(ov2311->client, OV2311_REG_V_FLIP,
OV2311_REG_VALUE_08BIT,
ctrl->val ? OV2311_FLIP_BIT : 0);
break;
default:
dev_warn(&client->dev, "%s Unhandled id:0x%x, val:0x%x\n",
__func__, ctrl->id, ctrl->val);
break;
}
pm_runtime_put(&client->dev);
return ret;
}
static const struct v4l2_ctrl_ops ov2311_ctrl_ops = {
.s_ctrl = ov2311_set_ctrl,
};
static int ov2311_initialize_controls(struct ov2311 *ov2311)
{
struct v4l2_fwnode_device_properties props;
const struct ov2311_mode *mode;
struct v4l2_ctrl_handler *handler;
struct v4l2_ctrl *ctrl;
s64 exposure_max, vblank_def;
u32 h_blank;
int ret;
handler = &ov2311->ctrl_handler;
mode = ov2311->cur_mode;
ret = v4l2_ctrl_handler_init(handler, 11);
if (ret)
return ret;
handler->lock = &ov2311->mutex;
ctrl = v4l2_ctrl_new_int_menu(handler, NULL, V4L2_CID_LINK_FREQ,
0, 0, link_freq_menu_items);
if (ctrl)
ctrl->flags |= V4L2_CTRL_FLAG_READ_ONLY;
ov2311->pixel_rate = v4l2_ctrl_new_std(handler, NULL,
V4L2_CID_PIXEL_RATE,
OV2311_PIXEL_RATE_10BIT,
OV2311_PIXEL_RATE_10BIT, 1,
OV2311_PIXEL_RATE_10BIT);
h_blank = mode->hts_def - mode->width;
ov2311->hblank = v4l2_ctrl_new_std(handler, NULL, V4L2_CID_HBLANK,
h_blank, h_blank, 1, h_blank);
if (ov2311->hblank)
ov2311->hblank->flags |= V4L2_CTRL_FLAG_READ_ONLY;
vblank_def = mode->vts_def - mode->height;
ov2311->vblank = v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops,
V4L2_CID_VBLANK, vblank_def,
OV2311_VTS_MAX - mode->height, 1,
vblank_def);
exposure_max = mode->vts_def - 4;
ov2311->exposure = v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops,
V4L2_CID_EXPOSURE,
OV2311_EXPOSURE_MIN, exposure_max,
OV2311_EXPOSURE_STEP,
mode->exp_def);
v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops, V4L2_CID_ANALOGUE_GAIN,
OV2311_GAIN_MIN, OV2311_GAIN_MAX, OV2311_GAIN_STEP,
OV2311_GAIN_DEFAULT);
v4l2_ctrl_new_std_menu_items(handler, &ov2311_ctrl_ops,
V4L2_CID_TEST_PATTERN,
ARRAY_SIZE(ov2311_test_pattern_menu) - 1,
0, 0, ov2311_test_pattern_menu);
v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
v4l2_ctrl_new_std(handler, &ov2311_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
ret = v4l2_fwnode_device_parse(&ov2311->client->dev, &props);
if (ret)
goto err_free_handler;
ret = v4l2_ctrl_new_fwnode_properties(handler, &ov2311_ctrl_ops,
&props);
if (ret)
goto err_free_handler;
if (handler->error) {
ret = handler->error;
dev_err(&ov2311->client->dev,
"Failed to init controls(%d)\n", ret);
goto err_free_handler;
}
ov2311->subdev.ctrl_handler = handler;
return 0;
err_free_handler:
v4l2_ctrl_handler_free(handler);
return ret;
}
static int ov2311_check_sensor_id(struct ov2311 *ov2311,
struct i2c_client *client)
{
struct device *dev = &ov2311->client->dev;
u32 id = 0, id_msb;
int ret;
ret = ov2311_read_reg(client, OV2311_REG_CHIP_ID + 1,
OV2311_REG_VALUE_08BIT, &id);
if (!ret)
ret = ov2311_read_reg(client, OV2311_REG_CHIP_ID,
OV2311_REG_VALUE_08BIT, &id_msb);
id |= (id_msb << 8);
if (ret || id != CHIP_ID) {
dev_err(dev, "Unexpected sensor id(%04x), ret(%d)\n", id, ret);
return -ENODEV;
}
dev_info(dev, "Detected OV%06x sensor\n", CHIP_ID);
return 0;
}
static int ov2311_configure_regulators(struct ov2311 *ov2311)
{
unsigned int i;
for (i = 0; i < OV2311_NUM_SUPPLIES; i++)
ov2311->supplies[i].supply = ov2311_supply_names[i];
return devm_regulator_bulk_get(&ov2311->client->dev,
OV2311_NUM_SUPPLIES,
ov2311->supplies);
}
static int ov2311_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct ov2311 *ov2311;
struct v4l2_subdev *sd;
int ret;
ov2311 = devm_kzalloc(dev, sizeof(*ov2311), GFP_KERNEL);
if (!ov2311)
return -ENOMEM;
ov2311->client = client;
ov2311->cur_mode = &supported_modes[0];
ov2311->xvclk = devm_clk_get(dev, "xvclk");
if (IS_ERR(ov2311->xvclk)) {
dev_err(dev, "Failed to get xvclk\n");
return -EINVAL;
}
ov2311->reset_gpio = devm_gpiod_get_optional(dev, "reset",
GPIOD_OUT_LOW);
if (IS_ERR(ov2311->reset_gpio))
dev_warn(dev, "Failed to get reset-gpios\n");
ov2311->pwdn_gpio = devm_gpiod_get_optional(dev, "pwdn", GPIOD_OUT_LOW);
if (IS_ERR(ov2311->pwdn_gpio))
dev_warn(dev, "Failed to get pwdn-gpios\n");
ret = ov2311_configure_regulators(ov2311);
if (ret) {
dev_err(dev, "Failed to get power regulators\n");
return ret;
}
mutex_init(&ov2311->mutex);
sd = &ov2311->subdev;
v4l2_i2c_subdev_init(sd, client, &ov2311_subdev_ops);
ret = ov2311_initialize_controls(ov2311);
if (ret)
goto err_destroy_mutex;
ret = ov2311_power_on(&client->dev);
if (ret)
goto err_free_handler;
ret = ov2311_check_sensor_id(ov2311, client);
if (ret)
goto err_power_off;
sd->internal_ops = &ov2311_internal_ops;
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
ov2311->pad.flags = MEDIA_PAD_FL_SOURCE;
sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&sd->entity, 1, &ov2311->pad);
if (ret < 0)
goto err_power_off;
ret = v4l2_async_register_subdev(sd);
if (ret) {
dev_err(dev, "v4l2 async register subdev failed\n");
goto err_clean_entity;
}
pm_runtime_set_active(dev);
pm_runtime_enable(dev);
pm_runtime_idle(dev);
return 0;
err_clean_entity:
media_entity_cleanup(&sd->entity);
err_power_off:
ov2311_power_off(&client->dev);
err_free_handler:
v4l2_ctrl_handler_free(&ov2311->ctrl_handler);
err_destroy_mutex:
mutex_destroy(&ov2311->mutex);
return ret;
}
static int ov2311_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct ov2311 *ov2311 = to_ov2311(sd);
v4l2_async_unregister_subdev(sd);
media_entity_cleanup(&sd->entity);
v4l2_ctrl_handler_free(&ov2311->ctrl_handler);
mutex_destroy(&ov2311->mutex);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev))
ov2311_power_off(&client->dev);
pm_runtime_set_suspended(&client->dev);
return 0;
}
static const struct of_device_id ov2311_of_match[] = {
{ .compatible = "ovti,ov2311" },
{},
};
MODULE_DEVICE_TABLE(of, ov2311_of_match);
static const struct i2c_device_id ov2311_match_id[] = {
{ "ovti,ov2311", 0 },
{ },
};
static struct i2c_driver ov2311_i2c_driver = {
.driver = {
.name = OV2311_NAME,
.pm = &ov2311_pm_ops,
.of_match_table = of_match_ptr(ov2311_of_match),
},
.probe = &ov2311_probe,
.remove = &ov2311_remove,
.id_table = ov2311_match_id,
};
module_i2c_driver(ov2311_i2c_driver);
MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com");
MODULE_DESCRIPTION("OmniVision OV2311 sensor driver");
MODULE_LICENSE("GPL v2");
Reference in New Issue View Git Blame Copy Permalink