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linux/drivers/media/i2c/thp7312.c
Laurent Pinchart a3e28ea777 media: i2c: thp7312: Store frame interval in subdev state 
Use the newly added storage for frame interval in the subdev state to
simplify the driver.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
2023-12-13 16:52:35 +01:00

2257 lines
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// SPDX-License-Identifier: GPL-2.0-only
/*
* Copyright (C) 2021 THine Electronics, Inc.
* Copyright (C) 2023 Ideas on Board Oy
*/
#include <asm/unaligned.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/firmware.h>
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/iopoll.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mtd/spi-nor.h>
#include <linux/pm_runtime.h>
#include <linux/property.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <media/v4l2-async.h>
#include <media/v4l2-cci.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/v4l2-event.h>
#include <media/v4l2-fwnode.h>
#include <media/v4l2-subdev.h>
#include <uapi/linux/thp7312.h>
/* ISP registers */
#define THP7312_REG_FIRMWARE_VERSION_1 CCI_REG8(0xf000)
#define THP7312_REG_CAMERA_STATUS CCI_REG8(0xf001)
#define THP7312_REG_FIRMWARE_VERSION_2 CCI_REG8(0xf005)
#define THP7312_REG_SET_OUTPUT_ENABLE CCI_REG8(0xf008)
#define THP7312_OUTPUT_ENABLE 0x01
#define THP7312_OUTPUT_DISABLE 0x00
#define THP7312_REG_SET_OUTPUT_COLOR_COMPRESSION CCI_REG8(0xf009)
#define THP7312_REG_SET_OUTPUT_COLOR_UYVY 0x00
#define THP7312_REG_SET_OUTPUT_COLOR_YUY2 0x04
#define THP7312_REG_FLIP_MIRROR CCI_REG8(0xf00c)
#define THP7312_REG_FLIP_MIRROR_FLIP BIT(0)
#define THP7312_REG_FLIP_MIRROR_MIRROR BIT(1)
#define THP7312_REG_VIDEO_IMAGE_SIZE CCI_REG8(0xf00d)
#define THP7312_VIDEO_IMAGE_SIZE_640x360 0x52
#define THP7312_VIDEO_IMAGE_SIZE_640x460 0x03
#define THP7312_VIDEO_IMAGE_SIZE_1280x720 0x0a
#define THP7312_VIDEO_IMAGE_SIZE_1920x1080 0x0b
#define THP7312_VIDEO_IMAGE_SIZE_3840x2160 0x0d
#define THP7312_VIDEO_IMAGE_SIZE_4160x3120 0x14
#define THP7312_VIDEO_IMAGE_SIZE_2016x1512 0x20
#define THP7312_VIDEO_IMAGE_SIZE_2048x1536 0x21
#define THP7312_REG_VIDEO_FRAME_RATE_MODE CCI_REG8(0xf00f)
#define THP7312_VIDEO_FRAME_RATE_MODE1 0x80
#define THP7312_VIDEO_FRAME_RATE_MODE2 0x81
#define THP7312_VIDEO_FRAME_RATE_MODE3 0x82
#define THP7312_REG_SET_DRIVING_MODE CCI_REG8(0xf010)
#define THP7312_REG_DRIVING_MODE_STATUS CCI_REG8(0xf011)
#define THP7312_REG_JPEG_COMPRESSION_FACTOR CCI_REG8(0xf01b)
#define THP7312_REG_AE_EXPOSURE_COMPENSATION CCI_REG8(0xf022)
#define THP7312_REG_AE_FLICKER_MODE CCI_REG8(0xf023)
#define THP7312_AE_FLICKER_MODE_50 0x00
#define THP7312_AE_FLICKER_MODE_60 0x01
#define THP7312_AE_FLICKER_MODE_DISABLE 0x80
#define THP7312_REG_AE_FIX_FRAME_RATE CCI_REG8(0xf02e)
#define THP7312_REG_MANUAL_WB_RED_GAIN CCI_REG8(0xf036)
#define THP7312_REG_MANUAL_WB_BLUE_GAIN CCI_REG8(0xf037)
#define THP7312_REG_WB_MODE CCI_REG8(0xf039)
#define THP7312_WB_MODE_AUTO 0x00
#define THP7312_WB_MODE_MANUAL 0x11
#define THP7312_REG_MANUAL_FOCUS_POSITION CCI_REG16(0xf03c)
#define THP7312_REG_AF_CONTROL CCI_REG8(0xf040)
#define THP7312_REG_AF_CONTROL_AF 0x01
#define THP7312_REG_AF_CONTROL_MANUAL 0x10
#define THP7312_REG_AF_CONTROL_LOCK 0x80
#define THP7312_REG_AF_SETTING CCI_REG8(0xf041)
#define THP7312_REG_AF_SETTING_ONESHOT_CONTRAST 0x00
#define THP7312_REG_AF_SETTING_ONESHOT_PDAF 0x40
#define THP7312_REG_AF_SETTING_ONESHOT_HYBRID 0x80
#define THP7312_REG_AF_SETTING_CONTINUOUS_CONTRAST 0x30
#define THP7312_REG_AF_SETTING_CONTINUOUS_PDAF 0x70
#define THP7312_REG_AF_SETTING_CONTINUOUS_HYBRID 0xf0
#define THP7312_REG_AF_SUPPORT CCI_REG8(0xf043)
#define THP7312_AF_SUPPORT_PDAF BIT(1)
#define THP7312_AF_SUPPORT_CONTRAST BIT(0)
#define THP7312_REG_SATURATION CCI_REG8(0xf052)
#define THP7312_REG_SHARPNESS CCI_REG8(0xf053)
#define THP7312_REG_BRIGHTNESS CCI_REG8(0xf056)
#define THP7312_REG_CONTRAST CCI_REG8(0xf057)
#define THP7312_REG_NOISE_REDUCTION CCI_REG8(0xf059)
#define THP7312_REG_NOISE_REDUCTION_FIXED BIT(7)
#define TH7312_REG_CUSTOM_MIPI_SET CCI_REG8(0xf0f6)
#define TH7312_REG_CUSTOM_MIPI_STATUS CCI_REG8(0xf0f7)
#define TH7312_REG_CUSTOM_MIPI_RD CCI_REG8(0xf0f8)
#define TH7312_REG_CUSTOM_MIPI_TD CCI_REG8(0xf0f9)
/*
* Firmware update registers. Those use a different address space than the
* normal operation ISP registers.
*/
#define THP7312_REG_FW_DRIVABILITY CCI_REG32(0xd65c)
#define THP7312_REG_FW_DEST_BANK_ADDR CCI_REG32(0xff08)
#define THP7312_REG_FW_VERIFY_RESULT CCI_REG8(0xff60)
#define THP7312_REG_FW_RESET_FLASH CCI_REG8(0xff61)
#define THP7312_REG_FW_MEMORY_IO_SETTING CCI_REG8(0xff62)
#define THP7312_FW_MEMORY_IO_GPIO0 1
#define THP7312_FW_MEMORY_IO_GPIO1 0
#define THP7312_REG_FW_CRC_RESULT CCI_REG32(0xff64)
#define THP7312_REG_FW_STATUS CCI_REG8(0xfffc)
#define THP7312_FW_VERSION(major, minor) (((major) << 8) | (minor))
#define THP7312_FW_VERSION_MAJOR(v) ((v) >> 8)
#define THP7312_FW_VERSION_MINOR(v) ((v) & 0xff)
enum thp7312_focus_method {
THP7312_FOCUS_METHOD_CONTRAST,
THP7312_FOCUS_METHOD_PDAF,
THP7312_FOCUS_METHOD_HYBRID,
};
/*
* enum thp7312_focus_state - State of the focus handler
*
* @THP7312_FOCUS_STATE_MANUAL: Manual focus, controlled through the
* V4L2_CID_FOCUS_ABSOLUTE control
* @THP7312_FOCUS_STATE_AUTO: Continuous auto-focus
* @THP7312_FOCUS_STATE_LOCKED: Lock the focus to a fixed position. This state
* is entered when switching from auto to manual mode.
* @THP7312_FOCUS_STATE_ONESHOT: One-shot auto-focus
*
* Valid transitions are as follow:
*
* digraph fsm {
* node [shape=circle];
*
* manual [label="MANUAL"];
* auto [label="AUTO"];
* locked [label="LOCKED"];
* oneshot [label="ONESHOT"];
*
* manual -> auto [label="FOCUS_AUTO <- true"]
* locked -> auto [label="FOCUS_AUTO <- true"]
* oneshot -> auto [label="FOCUS_AUTO <- true"]
* auto -> locked [label="FOCUS_AUTO <- false"]
*
* locked -> manual [label="FOCUS_ABSOLUTE <- *"]
* oneshot -> manual [label="FOCUS_ABSOLUTE <- *"]
*
* manual -> oneshot [label="FOCUS_START <- *"]
* locked -> oneshot [label="FOCUS_START <- *"]
* }
*/
enum thp7312_focus_state {
THP7312_FOCUS_STATE_MANUAL,
THP7312_FOCUS_STATE_AUTO,
THP7312_FOCUS_STATE_LOCKED,
THP7312_FOCUS_STATE_ONESHOT,
};
enum thp7312_boot_mode {
THP7312_BOOT_MODE_2WIRE_SLAVE = 0,
THP7312_BOOT_MODE_SPI_MASTER = 1,
};
struct thp7312_frame_rate {
u32 fps;
u32 link_freq;
u8 reg_frame_rate_mode;
};
struct thp7312_mode_info {
u32 width;
u32 height;
u8 reg_image_size;
const struct thp7312_frame_rate *rates;
};
static const u32 thp7312_colour_fmts[] = {
MEDIA_BUS_FMT_YUYV8_1X16,
};
/* regulator supplies */
static const char * const thp7312_supply_name[] = {
"vddcore",
"vhtermrx",
"vddtx",
"vddhost",
"vddcmos",
"vddgpio-0",
"vddgpio-1",
};
static const struct thp7312_mode_info thp7312_mode_info_data[] = {
{
.width = 1920,
.height = 1080,
.reg_image_size = THP7312_VIDEO_IMAGE_SIZE_1920x1080,
.rates = (const struct thp7312_frame_rate[]) {
{ 30, 300000000, 0x81 },
{ 60, 387500000, 0x82 },
{ 0 }
},
}, {
.width = 2048,
.height = 1536,
.reg_image_size = THP7312_VIDEO_IMAGE_SIZE_2048x1536,
.rates = (const struct thp7312_frame_rate[]) {
{ 30, 300000000, 0x81 },
{ 0 }
}
}, {
.width = 3840,
.height = 2160,
.reg_image_size = THP7312_VIDEO_IMAGE_SIZE_3840x2160,
.rates = (const struct thp7312_frame_rate[]) {
{ 30, 600000000, 0x81 },
{ 0 }
},
}, {
.width = 4160,
.height = 3120,
.reg_image_size = THP7312_VIDEO_IMAGE_SIZE_4160x3120,
.rates = (const struct thp7312_frame_rate[]) {
{ 20, 600000000, 0x81 },
{ 0 }
},
},
};
struct thp7312_device;
struct thp7312_sensor_info {
const char *model;
};
struct thp7312_sensor {
const struct thp7312_sensor_info *info;
u8 lane_remap;
};
struct thp7312_device {
struct device *dev;
struct regmap *regmap;
struct v4l2_subdev sd;
struct media_pad pad;
struct gpio_desc *reset_gpio;
struct regulator_bulk_data supplies[ARRAY_SIZE(thp7312_supply_name)];
struct clk *iclk;
u8 lane_remap;
struct thp7312_sensor sensors[1];
enum thp7312_boot_mode boot_mode;
struct v4l2_ctrl_handler ctrl_handler;
bool ctrls_applied;
s64 link_freq;
struct {
struct v4l2_ctrl *hflip;
struct v4l2_ctrl *vflip;
};
struct {
struct v4l2_ctrl *focus_auto;
struct v4l2_ctrl *focus_absolute;
struct v4l2_ctrl *focus_start;
struct v4l2_ctrl *focus_method;
};
enum thp7312_focus_state focus_state;
struct {
struct v4l2_ctrl *noise_reduction_auto;
struct v4l2_ctrl *noise_reduction_absolute;
};
/* Lock to protect fw_cancel */
struct mutex fw_lock;
struct fw_upload *fwl;
u8 *fw_write_buf;
bool fw_cancel;
u16 fw_version;
};
static const struct thp7312_sensor_info thp7312_sensor_info[] = {
{
.model = "sony,imx258",
},
};
static inline struct thp7312_device *to_thp7312_dev(struct v4l2_subdev *sd)
{
return container_of(sd, struct thp7312_device, sd);
}
static const struct thp7312_mode_info *
thp7312_find_mode(unsigned int width, unsigned int height, bool nearest)
{
const struct thp7312_mode_info *mode;
mode = v4l2_find_nearest_size(thp7312_mode_info_data,
ARRAY_SIZE(thp7312_mode_info_data),
width, height, width, height);
if (!nearest && (mode->width != width || mode->height != height))
return NULL;
return mode;
}
static const struct thp7312_frame_rate *
thp7312_find_rate(const struct thp7312_mode_info *mode, unsigned int fps,
bool nearest)
{
const struct thp7312_frame_rate *best_rate = NULL;
const struct thp7312_frame_rate *rate;
unsigned int best_delta = UINT_MAX;
if (!mode)
return NULL;
for (rate = mode->rates; rate->fps && best_delta; ++rate) {
unsigned int delta = abs(rate->fps - fps);
if (delta <= best_delta) {
best_delta = delta;
best_rate = rate;
}
}
if (!nearest && best_delta)
return NULL;
return best_rate;
}
/* -----------------------------------------------------------------------------
* Device Access & Configuration
*/
#define thp7312_read_poll_timeout(dev, addr, val, cond, sleep_us, timeout_us) \
({ \
int __ret, __err; \
__ret = read_poll_timeout(cci_read, __err, __err || (cond), sleep_us, \
timeout_us, false, (dev)->regmap, addr, \
&(val), NULL); \
__ret ? : __err; \
})
static int thp7312_map_data_lanes(u8 *lane_remap, const u8 *lanes, u8 num_lanes)
{
u8 used_lanes = 0;
u8 val = 0;
unsigned int i;
/*
* The value that we write to the register is the index in the
* data-lanes array, so we need to do a conversion. Do this in the same
* pass as validating data-lanes.
*/
for (i = 0; i < num_lanes; i++) {
if (lanes[i] < 1 || lanes[i] > 4)
return -EINVAL;
if (used_lanes & (BIT(lanes[i])))
return -EINVAL;
used_lanes |= BIT(lanes[i]);
/*
* data-lanes is 1-indexed while the field position in the
* register is 0-indexed.
*/
val |= i << ((lanes[i] - 1) * 2);
}
*lane_remap = val;
return 0;
}
static int thp7312_set_mipi_lanes(struct thp7312_device *thp7312)
{
struct device *dev = thp7312->dev;
int ret = 0;
u64 val;
cci_write(thp7312->regmap, TH7312_REG_CUSTOM_MIPI_RD,
thp7312->sensors[0].lane_remap, &ret);
cci_write(thp7312->regmap, TH7312_REG_CUSTOM_MIPI_TD,
thp7312->lane_remap, &ret);
cci_write(thp7312->regmap, TH7312_REG_CUSTOM_MIPI_SET, 1, &ret);
if (ret)
return ret;
ret = thp7312_read_poll_timeout(thp7312, TH7312_REG_CUSTOM_MIPI_STATUS,
val, val == 0x00, 100000, 2000000);
if (ret) {
dev_err(dev, "Failed to poll MIPI lane status: %d\n", ret);
return ret;
}
return 0;
}
static int thp7312_change_mode(struct thp7312_device *thp7312,
const struct thp7312_mode_info *mode,
const struct thp7312_frame_rate *rate)
{
struct device *dev = thp7312->dev;
u64 val = 0;
int ret;
ret = thp7312_read_poll_timeout(thp7312, THP7312_REG_CAMERA_STATUS, val,
val == 0x80, 20000, 200000);
if (ret < 0) {
dev_err(dev, "%s(): failed to poll ISP: %d\n", __func__, ret);
return ret;
}
cci_write(thp7312->regmap, THP7312_REG_VIDEO_IMAGE_SIZE,
mode->reg_image_size, &ret);
cci_write(thp7312->regmap, THP7312_REG_VIDEO_FRAME_RATE_MODE,
rate->reg_frame_rate_mode, &ret);
cci_write(thp7312->regmap, THP7312_REG_JPEG_COMPRESSION_FACTOR, 0x5e,
&ret);
cci_write(thp7312->regmap, THP7312_REG_SET_DRIVING_MODE, 0x01, &ret);
if (ret)
return ret;
ret = thp7312_read_poll_timeout(thp7312, THP7312_REG_DRIVING_MODE_STATUS,
val, val == 0x01, 20000, 100000);
if (ret < 0) {
dev_err(dev, "%s(): failed\n", __func__);
return ret;
}
return 0;
}
static int thp7312_set_framefmt(struct thp7312_device *thp7312,
struct v4l2_mbus_framefmt *format)
{
u8 val;
switch (format->code) {
case MEDIA_BUS_FMT_UYVY8_1X16:
/* YUV422, UYVY */
val = THP7312_REG_SET_OUTPUT_COLOR_UYVY;
break;
case MEDIA_BUS_FMT_YUYV8_1X16:
/* YUV422, YUYV */
val = THP7312_REG_SET_OUTPUT_COLOR_YUY2;
break;
default:
/* Should never happen */
return -EINVAL;
}
return cci_write(thp7312->regmap,
THP7312_REG_SET_OUTPUT_COLOR_COMPRESSION, val, NULL);
}
static int thp7312_init_mode(struct thp7312_device *thp7312,
struct v4l2_subdev_state *sd_state)
{
const struct thp7312_mode_info *mode;
const struct thp7312_frame_rate *rate;
struct v4l2_mbus_framefmt *fmt;
struct v4l2_fract *interval;
int ret;
/*
* TODO: The mode and rate should be cached in the subdev state, once
* support for extending states will be available.
*/
fmt = v4l2_subdev_state_get_format(sd_state, 0);
interval = v4l2_subdev_state_get_interval(sd_state, 0);
mode = thp7312_find_mode(fmt->width, fmt->height, false);
rate = thp7312_find_rate(mode, interval->denominator, false);
if (WARN_ON(!mode || !rate))
return -EINVAL;
ret = thp7312_set_framefmt(thp7312, fmt);
if (ret)
return ret;
return thp7312_change_mode(thp7312, mode, rate);
}
static int thp7312_stream_enable(struct thp7312_device *thp7312, bool enable)
{
return cci_write(thp7312->regmap, THP7312_REG_SET_OUTPUT_ENABLE,
enable ? THP7312_OUTPUT_ENABLE : THP7312_OUTPUT_DISABLE,
NULL);
}
static int thp7312_check_status_stream_mode(struct thp7312_device *thp7312)
{
struct device *dev = thp7312->dev;
u64 status = 0;
int ret;
while (status != 0x80) {
ret = cci_read(thp7312->regmap, THP7312_REG_CAMERA_STATUS,
&status, NULL);
if (ret)
return ret;
if (status == 0x80) {
dev_dbg(dev, "Camera initialization done\n");
return 0;
}
if (status != 0x00) {
dev_err(dev, "Invalid camera status %llx\n", status);
return -EINVAL;
}
dev_dbg(dev, "Camera initializing...\n");
usleep_range(70000, 80000);
}
return 0;
}
static void thp7312_reset(struct thp7312_device *thp7312)
{
unsigned long rate;
gpiod_set_value_cansleep(thp7312->reset_gpio, 1);
/*
* The minimum reset duration is 8 clock cycles, make it 10 to provide
* a safety margin.
*/
rate = clk_get_rate(thp7312->iclk);
fsleep(DIV_ROUND_UP(10 * USEC_PER_SEC, rate));
gpiod_set_value_cansleep(thp7312->reset_gpio, 0);
/*
* TODO: The documentation states that the device needs 2ms to
* initialize after reset is deasserted. It then proceeds to load the
* firmware from the flash memory, which takes an unspecified amount of
* time. Check if this delay could be reduced.
*/
fsleep(300000);
}
/* -----------------------------------------------------------------------------
* Power Management
*/
static void __thp7312_power_off(struct thp7312_device *thp7312)
{
regulator_bulk_disable(ARRAY_SIZE(thp7312->supplies), thp7312->supplies);
clk_disable_unprepare(thp7312->iclk);
}
static void thp7312_power_off(struct thp7312_device *thp7312)
{
__thp7312_power_off(thp7312);
}
static int __thp7312_power_on(struct thp7312_device *thp7312)
{
struct device *dev = thp7312->dev;
int ret;
ret = regulator_bulk_enable(ARRAY_SIZE(thp7312->supplies),
thp7312->supplies);
if (ret < 0)
return ret;
ret = clk_prepare_enable(thp7312->iclk);
if (ret < 0) {
dev_err(dev, "clk prepare enable failed\n");
regulator_bulk_disable(ARRAY_SIZE(thp7312->supplies),
thp7312->supplies);
return ret;
}
/*
* We cannot assume that turning off and on again will reset, so do a
* software reset on power up.
*/
thp7312_reset(thp7312);
return 0;
}
static int thp7312_power_on(struct thp7312_device *thp7312)
{
int ret;
ret = __thp7312_power_on(thp7312);
if (ret < 0)
return ret;
ret = thp7312_check_status_stream_mode(thp7312);
if (ret < 0)
goto error;
ret = thp7312_set_mipi_lanes(thp7312);
if (ret)
goto error;
return 0;
error:
thp7312_power_off(thp7312);
return ret;
}
static int __maybe_unused thp7312_pm_runtime_suspend(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct thp7312_device *thp7312 = to_thp7312_dev(sd);
thp7312_power_off(thp7312);
thp7312->ctrls_applied = false;
return 0;
}
static int __maybe_unused thp7312_pm_runtime_resume(struct device *dev)
{
struct v4l2_subdev *sd = dev_get_drvdata(dev);
struct thp7312_device *thp7312 = to_thp7312_dev(sd);
return thp7312_power_on(thp7312);
}
static const struct dev_pm_ops thp7312_pm_ops = {
SET_RUNTIME_PM_OPS(thp7312_pm_runtime_suspend,
thp7312_pm_runtime_resume, NULL)
};
/* -----------------------------------------------------------------------------
* V4L2 Subdev Operations
*/
static bool thp7312_find_bus_code(u32 code)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(thp7312_colour_fmts); ++i) {
if (thp7312_colour_fmts[i] == code)
return true;
}
return false;
}
static int thp7312_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->index >= ARRAY_SIZE(thp7312_colour_fmts))
return -EINVAL;
code->code = thp7312_colour_fmts[code->index];
return 0;
}
static int thp7312_enum_frame_size(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_size_enum *fse)
{
if (!thp7312_find_bus_code(fse->code))
return -EINVAL;
if (fse->index >= ARRAY_SIZE(thp7312_mode_info_data))
return -EINVAL;
fse->min_width = thp7312_mode_info_data[fse->index].width;
fse->max_width = fse->min_width;
fse->min_height = thp7312_mode_info_data[fse->index].height;
fse->max_height = fse->min_height;
return 0;
}
static int thp7312_enum_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval_enum *fie)
{
const struct thp7312_frame_rate *rate;
const struct thp7312_mode_info *mode;
unsigned int index = fie->index;
if (!thp7312_find_bus_code(fie->code))
return -EINVAL;
mode = thp7312_find_mode(fie->width, fie->height, false);
if (!mode)
return -EINVAL;
for (rate = mode->rates; rate->fps; ++rate, --index) {
if (!index) {
fie->interval.numerator = 1;
fie->interval.denominator = rate->fps;
return 0;
}
}
return -EINVAL;
}
static int thp7312_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_format *format)
{
struct thp7312_device *thp7312 = to_thp7312_dev(sd);
struct v4l2_mbus_framefmt *mbus_fmt = &format->format;
struct v4l2_mbus_framefmt *fmt;
struct v4l2_fract *interval;
const struct thp7312_mode_info *mode;
if (!thp7312_find_bus_code(mbus_fmt->code))
mbus_fmt->code = thp7312_colour_fmts[0];
mode = thp7312_find_mode(mbus_fmt->width, mbus_fmt->height, true);
fmt = v4l2_subdev_state_get_format(sd_state, 0);
fmt->code = mbus_fmt->code;
fmt->width = mode->width;
fmt->height = mode->height;
fmt->colorspace = V4L2_COLORSPACE_SRGB;
fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
*mbus_fmt = *fmt;
interval = v4l2_subdev_state_get_interval(sd_state, 0);
interval->numerator = 1;
interval->denominator = mode->rates[0].fps;
if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
thp7312->link_freq = mode->rates[0].link_freq;
return 0;
}
static int thp7312_set_frame_interval(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state,
struct v4l2_subdev_frame_interval *fi)
{
struct thp7312_device *thp7312 = to_thp7312_dev(sd);
const struct thp7312_mode_info *mode;
const struct thp7312_frame_rate *rate;
const struct v4l2_mbus_framefmt *fmt;
struct v4l2_fract *interval;
unsigned int fps;
/* Avoid divisions by 0, pick the highest frame if the interval is 0. */
fps = fi->interval.numerator
? DIV_ROUND_CLOSEST(fi->interval.denominator, fi->interval.numerator)
: UINT_MAX;
fmt = v4l2_subdev_state_get_format(sd_state, 0);
mode = thp7312_find_mode(fmt->width, fmt->height, false);
rate = thp7312_find_rate(mode, fps, true);
interval = v4l2_subdev_state_get_interval(sd_state, 0);
interval->numerator = 1;
interval->denominator = rate->fps;
if (fi->which == V4L2_SUBDEV_FORMAT_ACTIVE)
thp7312->link_freq = rate->link_freq;
fi->interval = *interval;
return 0;
}
static int thp7312_s_stream(struct v4l2_subdev *sd, int enable)
{
struct thp7312_device *thp7312 = to_thp7312_dev(sd);
struct v4l2_subdev_state *sd_state;
int ret;
sd_state = v4l2_subdev_lock_and_get_active_state(sd);
if (!enable) {
thp7312_stream_enable(thp7312, false);
pm_runtime_mark_last_busy(thp7312->dev);
pm_runtime_put_autosuspend(thp7312->dev);
v4l2_subdev_unlock_state(sd_state);
return 0;
}
ret = pm_runtime_resume_and_get(thp7312->dev);
if (ret)
goto finish_unlock;
ret = thp7312_init_mode(thp7312, sd_state);
if (ret)
goto finish_pm;
if (!thp7312->ctrls_applied) {
ret = __v4l2_ctrl_handler_setup(&thp7312->ctrl_handler);
if (ret)
goto finish_pm;
thp7312->ctrls_applied = true;
}
ret = thp7312_stream_enable(thp7312, true);
if (ret)
goto finish_pm;
goto finish_unlock;
finish_pm:
pm_runtime_mark_last_busy(thp7312->dev);
pm_runtime_put_autosuspend(thp7312->dev);
finish_unlock:
v4l2_subdev_unlock_state(sd_state);
return ret;
}
static int thp7312_init_state(struct v4l2_subdev *sd,
struct v4l2_subdev_state *sd_state)
{
const struct thp7312_mode_info *default_mode = &thp7312_mode_info_data[0];
struct v4l2_mbus_framefmt *fmt;
struct v4l2_fract *interval;
fmt = v4l2_subdev_state_get_format(sd_state, 0);
interval = v4l2_subdev_state_get_interval(sd_state, 0);
/*
* default init sequence initialize thp7312 to
* YUV422 YUYV VGA@30fps
*/
fmt->code = MEDIA_BUS_FMT_YUYV8_1X16;
fmt->colorspace = V4L2_COLORSPACE_SRGB;
fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
fmt->quantization = V4L2_QUANTIZATION_FULL_RANGE;
fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
fmt->width = default_mode->width;
fmt->height = default_mode->height;
fmt->field = V4L2_FIELD_NONE;
interval->numerator = 1;
interval->denominator = default_mode->rates[0].fps;
return 0;
}
static const struct v4l2_subdev_core_ops thp7312_core_ops = {
.log_status = v4l2_ctrl_subdev_log_status,
.subscribe_event = v4l2_ctrl_subdev_subscribe_event,
.unsubscribe_event = v4l2_event_subdev_unsubscribe,
};
static const struct v4l2_subdev_video_ops thp7312_video_ops = {
.s_stream = thp7312_s_stream,
};
static const struct v4l2_subdev_pad_ops thp7312_pad_ops = {
.enum_mbus_code = thp7312_enum_mbus_code,
.get_fmt = v4l2_subdev_get_fmt,
.set_fmt = thp7312_set_fmt,
.get_frame_interval = v4l2_subdev_get_frame_interval,
.set_frame_interval = thp7312_set_frame_interval,
.enum_frame_size = thp7312_enum_frame_size,
.enum_frame_interval = thp7312_enum_frame_interval,
};
static const struct v4l2_subdev_ops thp7312_subdev_ops = {
.core = &thp7312_core_ops,
.video = &thp7312_video_ops,
.pad = &thp7312_pad_ops,
};
static const struct v4l2_subdev_internal_ops thp7312_internal_ops = {
.init_state = thp7312_init_state,
};
/* -----------------------------------------------------------------------------
* V4L2 Control Operations
*/
static inline struct thp7312_device *to_thp7312_from_ctrl(struct v4l2_ctrl *ctrl)
{
return container_of(ctrl->handler, struct thp7312_device, ctrl_handler);
}
/* 0: 3000cm, 18: 8cm */
static const u16 thp7312_focus_values[] = {
3000, 1000, 600, 450, 350,
290, 240, 200, 170, 150,
140, 130, 120, 110, 100,
93, 87, 83, 80,
};
static int thp7312_set_focus(struct thp7312_device *thp7312)
{
enum thp7312_focus_state new_state = thp7312->focus_state;
bool continuous;
u8 af_control;
u8 af_setting;
int ret = 0;
/* Start by programming the manual focus position if it has changed. */
if (thp7312->focus_absolute->is_new) {
unsigned int value;
value = thp7312_focus_values[thp7312->focus_absolute->val];
ret = cci_write(thp7312->regmap,
THP7312_REG_MANUAL_FOCUS_POSITION, value, NULL);
if (ret)
return ret;
}
/* Calculate the new focus state. */
switch (thp7312->focus_state) {
case THP7312_FOCUS_STATE_MANUAL:
default:
if (thp7312->focus_auto->val)
new_state = THP7312_FOCUS_STATE_AUTO;
else if (thp7312->focus_start->is_new)
new_state = THP7312_FOCUS_STATE_ONESHOT;
break;
case THP7312_FOCUS_STATE_AUTO:
if (!thp7312->focus_auto->val)
new_state = THP7312_FOCUS_STATE_LOCKED;
break;
case THP7312_FOCUS_STATE_LOCKED:
if (thp7312->focus_auto->val)
new_state = THP7312_FOCUS_STATE_AUTO;
else if (thp7312->focus_start->is_new)
new_state = THP7312_FOCUS_STATE_ONESHOT;
else if (thp7312->focus_absolute->is_new)
new_state = THP7312_FOCUS_STATE_MANUAL;
break;
case THP7312_FOCUS_STATE_ONESHOT:
if (thp7312->focus_auto->val)
new_state = THP7312_FOCUS_STATE_AUTO;
else if (thp7312->focus_start->is_new)
new_state = THP7312_FOCUS_STATE_ONESHOT;
else if (thp7312->focus_absolute->is_new)
new_state = THP7312_FOCUS_STATE_MANUAL;
break;
}
/*
* If neither the state nor the focus method has changed, and no new
* one-shot focus is requested, there's nothing new to program to the
* hardware.
*/
if (thp7312->focus_state == new_state &&
!thp7312->focus_method->is_new && !thp7312->focus_start->is_new)
return 0;
continuous = new_state == THP7312_FOCUS_STATE_MANUAL ||
new_state == THP7312_FOCUS_STATE_ONESHOT;
switch (thp7312->focus_method->val) {
case THP7312_FOCUS_METHOD_CONTRAST:
default:
af_setting = continuous
? THP7312_REG_AF_SETTING_CONTINUOUS_CONTRAST
: THP7312_REG_AF_SETTING_ONESHOT_CONTRAST;
break;
case THP7312_FOCUS_METHOD_PDAF:
af_setting = continuous
? THP7312_REG_AF_SETTING_CONTINUOUS_PDAF
: THP7312_REG_AF_SETTING_ONESHOT_PDAF;
break;
case THP7312_FOCUS_METHOD_HYBRID:
af_setting = continuous
? THP7312_REG_AF_SETTING_CONTINUOUS_HYBRID
: THP7312_REG_AF_SETTING_ONESHOT_HYBRID;
break;
}
switch (new_state) {
case THP7312_FOCUS_STATE_MANUAL:
default:
af_control = THP7312_REG_AF_CONTROL_MANUAL;
break;
case THP7312_FOCUS_STATE_AUTO:
case THP7312_FOCUS_STATE_ONESHOT:
af_control = THP7312_REG_AF_CONTROL_AF;
break;
case THP7312_FOCUS_STATE_LOCKED:
af_control = THP7312_REG_AF_CONTROL_LOCK;
break;
}
cci_write(thp7312->regmap, THP7312_REG_AF_SETTING, af_setting, &ret);
if (new_state == THP7312_FOCUS_STATE_MANUAL &&
(thp7312->focus_state == THP7312_FOCUS_STATE_AUTO ||
thp7312->focus_state == THP7312_FOCUS_STATE_ONESHOT)) {
/* When switching to manual state, lock AF first. */
cci_write(thp7312->regmap, THP7312_REG_AF_CONTROL,
THP7312_REG_AF_CONTROL_LOCK, &ret);
}
cci_write(thp7312->regmap, THP7312_REG_AF_CONTROL, af_control, &ret);
if (ret)
return ret;
thp7312->focus_state = new_state;
return 0;
}
static int thp7312_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct thp7312_device *thp7312 = to_thp7312_from_ctrl(ctrl);
int ret = 0;
u8 value;
if (ctrl->flags & V4L2_CTRL_FLAG_INACTIVE)
return -EINVAL;
if (!pm_runtime_get_if_active(thp7312->dev, true))
return 0;
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
cci_write(thp7312->regmap, THP7312_REG_BRIGHTNESS,
ctrl->val + 10, &ret);
break;
case V4L2_CID_THP7312_LOW_LIGHT_COMPENSATION:
/* 0 = Auto adjust frame rate, 1 = Fix frame rate */
cci_write(thp7312->regmap, THP7312_REG_AE_FIX_FRAME_RATE,
ctrl->val ? 0 : 1, &ret);
break;
case V4L2_CID_FOCUS_AUTO:
case V4L2_CID_FOCUS_ABSOLUTE:
case V4L2_CID_AUTO_FOCUS_START:
case V4L2_CID_THP7312_AUTO_FOCUS_METHOD:
ret = thp7312_set_focus(thp7312);
break;
case V4L2_CID_HFLIP:
case V4L2_CID_VFLIP:
value = (thp7312->hflip->val ? THP7312_REG_FLIP_MIRROR_MIRROR : 0)
| (thp7312->vflip->val ? THP7312_REG_FLIP_MIRROR_FLIP : 0);
cci_write(thp7312->regmap, THP7312_REG_FLIP_MIRROR, value, &ret);
break;
case V4L2_CID_THP7312_NOISE_REDUCTION_AUTO:
case V4L2_CID_THP7312_NOISE_REDUCTION_ABSOLUTE:
value = thp7312->noise_reduction_auto->val ? 0
: THP7312_REG_NOISE_REDUCTION_FIXED |
thp7312->noise_reduction_absolute->val;
cci_write(thp7312->regmap, THP7312_REG_NOISE_REDUCTION, value,
&ret);
break;
case V4L2_CID_AUTO_WHITE_BALANCE:
value = ctrl->val ? THP7312_WB_MODE_AUTO : THP7312_WB_MODE_MANUAL;
cci_write(thp7312->regmap, THP7312_REG_WB_MODE, value, &ret);
break;
case V4L2_CID_RED_BALANCE:
cci_write(thp7312->regmap, THP7312_REG_MANUAL_WB_RED_GAIN,
ctrl->val, &ret);
break;
case V4L2_CID_BLUE_BALANCE:
cci_write(thp7312->regmap, THP7312_REG_MANUAL_WB_BLUE_GAIN,
ctrl->val, &ret);
break;
case V4L2_CID_AUTO_EXPOSURE_BIAS:
cci_write(thp7312->regmap, THP7312_REG_AE_EXPOSURE_COMPENSATION,
ctrl->val, &ret);
break;
case V4L2_CID_POWER_LINE_FREQUENCY:
if (ctrl->val == V4L2_CID_POWER_LINE_FREQUENCY_60HZ) {
value = THP7312_AE_FLICKER_MODE_60;
} else if (ctrl->val == V4L2_CID_POWER_LINE_FREQUENCY_50HZ) {
value = THP7312_AE_FLICKER_MODE_50;
} else {
if (thp7312->fw_version == THP7312_FW_VERSION(40, 3)) {
/* THP7312_AE_FLICKER_MODE_DISABLE is not supported */
value = THP7312_AE_FLICKER_MODE_50;
} else {
value = THP7312_AE_FLICKER_MODE_DISABLE;
}
}
cci_write(thp7312->regmap, THP7312_REG_AE_FLICKER_MODE,
value, &ret);
break;
case V4L2_CID_SATURATION:
cci_write(thp7312->regmap, THP7312_REG_SATURATION,
ctrl->val, &ret);
break;
case V4L2_CID_CONTRAST:
cci_write(thp7312->regmap, THP7312_REG_CONTRAST,
ctrl->val, &ret);
break;
case V4L2_CID_SHARPNESS:
cci_write(thp7312->regmap, THP7312_REG_SHARPNESS,
ctrl->val, &ret);
break;
default:
break;
}
pm_runtime_mark_last_busy(thp7312->dev);
pm_runtime_put_autosuspend(thp7312->dev);
return ret;
}
static const struct v4l2_ctrl_ops thp7312_ctrl_ops = {
.s_ctrl = thp7312_s_ctrl,
};
/*
* Refer to Documentation/userspace-api/media/drivers/thp7312.rst for details.
*/
static const struct v4l2_ctrl_config thp7312_ctrl_focus_method_cdaf = {
.ops = &thp7312_ctrl_ops,
.id = V4L2_CID_THP7312_AUTO_FOCUS_METHOD,
.name = "Auto-Focus Method",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = THP7312_FOCUS_METHOD_CONTRAST,
.def = THP7312_FOCUS_METHOD_CONTRAST,
.max = THP7312_FOCUS_METHOD_CONTRAST,
.step = 1,
};
static const struct v4l2_ctrl_config thp7312_ctrl_focus_method_pdaf = {
.ops = &thp7312_ctrl_ops,
.id = V4L2_CID_THP7312_AUTO_FOCUS_METHOD,
.name = "Auto-Focus Method",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = THP7312_FOCUS_METHOD_CONTRAST,
.def = THP7312_FOCUS_METHOD_HYBRID,
.max = THP7312_FOCUS_METHOD_HYBRID,
.step = 1,
};
static const struct v4l2_ctrl_config thp7312_v4l2_ctrls_custom[] = {
{
.ops = &thp7312_ctrl_ops,
.id = V4L2_CID_THP7312_LOW_LIGHT_COMPENSATION,
.name = "Low Light Compensation",
.type = V4L2_CTRL_TYPE_BOOLEAN,
.min = 0,
.def = 1,
.max = 1,
.step = 1,
}, {
.ops = &thp7312_ctrl_ops,
.id = V4L2_CID_THP7312_NOISE_REDUCTION_AUTO,
.name = "Noise Reduction Auto",
.type = V4L2_CTRL_TYPE_BOOLEAN,
.min = 0,
.def = 1,
.max = 1,
.step = 1,
}, {
.ops = &thp7312_ctrl_ops,
.id = V4L2_CID_THP7312_NOISE_REDUCTION_ABSOLUTE,
.name = "Noise Reduction Level",
.type = V4L2_CTRL_TYPE_INTEGER,
.min = 0,
.def = 0,
.max = 10,
.step = 1,
},
};
static const s64 exp_bias_qmenu[] = {
-2000, -1667, -1333, -1000, -667, -333, 0, 333, 667, 1000, 1333, 1667, 2000
};
static int thp7312_init_controls(struct thp7312_device *thp7312)
{
struct v4l2_ctrl_handler *hdl = &thp7312->ctrl_handler;
struct device *dev = thp7312->dev;
struct v4l2_fwnode_device_properties props;
struct v4l2_ctrl *link_freq;
unsigned int num_controls;
unsigned int i;
u8 af_support;
int ret;
/*
* Check what auto-focus methods the connected sensor supports, if any.
* Firmwares before v90.03 didn't expose the AF_SUPPORT register,
* consider both CDAF and PDAF as supported in that case.
*/
if (thp7312->fw_version >= THP7312_FW_VERSION(90, 3)) {
u64 val;
ret = cci_read(thp7312->regmap, THP7312_REG_AF_SUPPORT, &val,
NULL);
if (ret)
return ret;
af_support = val & (THP7312_AF_SUPPORT_PDAF |
THP7312_AF_SUPPORT_CONTRAST);
} else {
af_support = THP7312_AF_SUPPORT_PDAF
| THP7312_AF_SUPPORT_CONTRAST;
}
num_controls = 14 + ARRAY_SIZE(thp7312_v4l2_ctrls_custom)
+ (af_support ? 4 : 0);
v4l2_ctrl_handler_init(hdl, num_controls);
if (af_support) {
const struct v4l2_ctrl_config *af_method;
af_method = af_support & THP7312_AF_SUPPORT_PDAF
? &thp7312_ctrl_focus_method_pdaf
: &thp7312_ctrl_focus_method_cdaf;
thp7312->focus_state = THP7312_FOCUS_STATE_MANUAL;
thp7312->focus_auto =
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops,
V4L2_CID_FOCUS_AUTO,
0, 1, 1, 1);
thp7312->focus_absolute =
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops,
V4L2_CID_FOCUS_ABSOLUTE,
0, ARRAY_SIZE(thp7312_focus_values),
1, 0);
thp7312->focus_method =
v4l2_ctrl_new_custom(hdl, af_method, NULL);
thp7312->focus_start =
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops,
V4L2_CID_AUTO_FOCUS_START,
1, 1, 1, 1);
v4l2_ctrl_cluster(4, &thp7312->focus_auto);
}
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_AUTO_WHITE_BALANCE,
0, 1, 1, 1);
/* 32: 1x, 255: 7.95x */
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_RED_BALANCE,
32, 255, 1, 64);
/* 32: 1x, 255: 7.95x */
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_BLUE_BALANCE,
32, 255, 1, 50);
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_BRIGHTNESS,
-10, 10, 1, 0);
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_SATURATION,
0, 31, 1, 10);
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_CONTRAST,
0, 20, 1, 10);
v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops, V4L2_CID_SHARPNESS,
0, 31, 1, 8);
thp7312->hflip = v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops,
V4L2_CID_HFLIP, 0, 1, 1, 0);
thp7312->vflip = v4l2_ctrl_new_std(hdl, &thp7312_ctrl_ops,
V4L2_CID_VFLIP, 0, 1, 1, 0);
v4l2_ctrl_cluster(2, &thp7312->hflip);
v4l2_ctrl_new_int_menu(hdl, &thp7312_ctrl_ops,
V4L2_CID_AUTO_EXPOSURE_BIAS,
ARRAY_SIZE(exp_bias_qmenu) - 1,
ARRAY_SIZE(exp_bias_qmenu) / 2, exp_bias_qmenu);
v4l2_ctrl_new_std_menu(hdl, &thp7312_ctrl_ops,
V4L2_CID_POWER_LINE_FREQUENCY,
V4L2_CID_POWER_LINE_FREQUENCY_60HZ, 0,
V4L2_CID_POWER_LINE_FREQUENCY_50HZ);
thp7312->link_freq = thp7312_mode_info_data[0].rates[0].link_freq;
link_freq = v4l2_ctrl_new_int_menu(hdl, &thp7312_ctrl_ops,
V4L2_CID_LINK_FREQ, 0, 0,
&thp7312->link_freq);
/* Set properties from fwnode (e.g. rotation, orientation). */
ret = v4l2_fwnode_device_parse(dev, &props);
if (ret) {
dev_err(dev, "Failed to parse fwnode: %d\n", ret);
goto error;
}
ret = v4l2_ctrl_new_fwnode_properties(hdl, &thp7312_ctrl_ops, &props);
if (ret) {
dev_err(dev, "Failed to create new v4l2 ctrl for fwnode properties: %d\n", ret);
goto error;
}
for (i = 0; i < ARRAY_SIZE(thp7312_v4l2_ctrls_custom); i++) {
const struct v4l2_ctrl_config *ctrl_cfg =
&thp7312_v4l2_ctrls_custom[i];
struct v4l2_ctrl *ctrl;
ctrl = v4l2_ctrl_new_custom(hdl, ctrl_cfg, NULL);
if (ctrl_cfg->id == V4L2_CID_THP7312_NOISE_REDUCTION_AUTO)
thp7312->noise_reduction_auto = ctrl;
else if (ctrl_cfg->id == V4L2_CID_THP7312_NOISE_REDUCTION_ABSOLUTE)
thp7312->noise_reduction_absolute = ctrl;
}
v4l2_ctrl_cluster(2, &thp7312->noise_reduction_auto);
if (hdl->error) {
dev_err(dev, "v4l2_ctrl_handler error\n");
ret = hdl->error;
goto error;
}
link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
return ret;
error:
v4l2_ctrl_handler_free(hdl);
return ret;
}
/* -----------------------------------------------------------------------------
* Firmware Update
*/
/*
* The firmware data is made of 128kB of RAM firmware, followed by a
* variable-size "header". Both are stored in flash memory.
*/
#define THP7312_FW_RAM_SIZE (128 * 1024)
#define THP7312_FW_MIN_SIZE (THP7312_FW_RAM_SIZE + 4)
#define THP7312_FW_MAX_SIZE (THP7312_FW_RAM_SIZE + 64 * 1024)
/*
* Data is first uploaded to the THP7312 128kB SRAM, and then written to flash.
* The SRAM is exposed over I2C as 32kB banks, and up to 4kB of data can be
* transferred in a single I2C write.
*/
#define THP7312_RAM_BANK_SIZE (32 * 1024)
#define THP7312_FW_DOWNLOAD_UNIT (4 * 1024)
#define THP7312_FLASH_MEMORY_ERASE_TIMEOUT 40
#define THP7312_FLASH_MAX_REG_READ_SIZE 10
#define THP7312_FLASH_MAX_REG_DATA_SIZE 10
static const u8 thp7312_cmd_config_flash_mem_if[] = {
0xd5, 0x18, 0x00, 0x00, 0x00, 0x80
};
static const u8 thp7312_cmd_write_to_reg[] = {
0xd5, 0x0c, 0x80, 0x00, 0x00, 0x00
};
static const u8 thp7312_cmd_read_reg[] = {
0xd5, 0x04
};
/*
* THP7312 Write data from RAM to Flash Memory
* Command ID FF700F
* Format: FF700F AA AA AA BB BB BB
* AA AA AA: destination start address
* BB BB BB: (write size - 1)
* Source address always starts from 0
*/
static const u8 thp7312_cmd_write_ram_to_flash[] = { 0xff, 0x70, 0x0f };
/*
* THP7312 Calculate CRC command
* Command ID: FF70 09
* Format: FF70 09 AA AA AA BB BB BB
* AA AA AA: Start address of calculation
* BB BB BB: (calculate size - 1)
*/
static const u8 thp7312_cmd_calc_crc[] = { 0xff, 0x70, 0x09 };
static const u8 thp7312_jedec_rdid[] = { SPINOR_OP_RDID, 0x00, 0x00, 0x00 };
static const u8 thp7312_jedec_rdsr[] = { SPINOR_OP_RDSR, 0x00, 0x00, 0x00 };
static const u8 thp7312_jedec_wen[] = { SPINOR_OP_WREN };
static int thp7312_read_firmware_version(struct thp7312_device *thp7312)
{
u64 val = 0;
int ret = 0;
u8 major;
u8 minor;
cci_read(thp7312->regmap, THP7312_REG_FIRMWARE_VERSION_1, &val, &ret);
major = val;
cci_read(thp7312->regmap, THP7312_REG_FIRMWARE_VERSION_2, &val, &ret);
minor = val;
thp7312->fw_version = THP7312_FW_VERSION(major, minor);
return ret;
}
static int thp7312_write_buf(struct thp7312_device *thp7312,
const u8 *write_buf, u16 write_size)
{
struct i2c_client *client = to_i2c_client(thp7312->dev);
int ret;
ret = i2c_master_send(client, write_buf, write_size);
return ret >= 0 ? 0 : ret;
}
static int __thp7312_flash_reg_write(struct thp7312_device *thp7312,
const u8 *write_buf, u16 write_size)
{
struct device *dev = thp7312->dev;
u8 temp_write_buf[THP7312_FLASH_MAX_REG_DATA_SIZE + 2];
int ret;
if (write_size > THP7312_FLASH_MAX_REG_DATA_SIZE) {
dev_err(dev, "%s: Write size error size = %d\n",
__func__, write_size);
return -EINVAL;
}
ret = thp7312_write_buf(thp7312, thp7312_cmd_config_flash_mem_if,
sizeof(thp7312_cmd_config_flash_mem_if));
if (ret < 0) {
dev_err(dev, "%s: Failed to config flash memory IF: %d\n",
__func__, ret);
return ret;
}
temp_write_buf[0] = 0xd5;
temp_write_buf[1] = 0x00;
memcpy((temp_write_buf + 2), write_buf, write_size);
ret = thp7312_write_buf(thp7312, temp_write_buf, write_size + 2);
if (ret < 0)
return ret;
thp7312_write_buf(thp7312, thp7312_cmd_write_to_reg,
sizeof(thp7312_cmd_write_to_reg));
return 0;
}
static int __thp7312_flash_reg_read(struct thp7312_device *thp7312,
const u8 *write_buf, u16 write_size,
u8 *read_buf, u16 read_size)
{
struct i2c_client *client = to_i2c_client(thp7312->dev);
struct i2c_msg msgs[2];
int ret;
ret = __thp7312_flash_reg_write(thp7312, write_buf, write_size);
if (ret)
return ret;
msgs[0].addr = client->addr;
msgs[0].flags = 0;
msgs[0].len = sizeof(thp7312_cmd_read_reg),
msgs[0].buf = (u8 *)thp7312_cmd_read_reg;
msgs[1].addr = client->addr;
msgs[1].flags = I2C_M_RD;
msgs[1].len = read_size;
msgs[1].buf = read_buf;
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
return ret >= 0 ? 0 : ret;
}
#define thp7312_flash_reg_write(thp7312, wrbuf) \
__thp7312_flash_reg_write(thp7312, wrbuf, sizeof(wrbuf))
#define thp7312_flash_reg_read(thp7312, wrbuf, rdbuf) \
__thp7312_flash_reg_read(thp7312, wrbuf, sizeof(wrbuf), \
rdbuf, sizeof(rdbuf))
static enum fw_upload_err thp7312_fw_prepare_config(struct thp7312_device *thp7312)
{
struct device *dev = thp7312->dev;
int ret;
ret = cci_write(thp7312->regmap, THP7312_REG_FW_MEMORY_IO_SETTING,
THP7312_FW_MEMORY_IO_GPIO0, NULL);
if (ret) {
dev_err(dev, "Failed to set flash memory I/O\n");
return FW_UPLOAD_ERR_HW_ERROR;
}
/* Set max drivability. */
ret = cci_write(thp7312->regmap, THP7312_REG_FW_DRIVABILITY, 0x00777777,
NULL);
if (ret) {
dev_err(dev, "Failed to set drivability: %d\n", ret);
return FW_UPLOAD_ERR_HW_ERROR;
}
return FW_UPLOAD_ERR_NONE;
}
static enum fw_upload_err thp7312_fw_prepare_check(struct thp7312_device *thp7312)
{
struct device *dev = thp7312->dev;
u8 read_buf[3] = { 0 };
int ret;
/* Get JEDEC ID */
ret = thp7312_flash_reg_read(thp7312, thp7312_jedec_rdid, read_buf);
if (ret) {
dev_err(dev, "Failed to get JEDEC ID: %d\n", ret);
return FW_UPLOAD_ERR_HW_ERROR;
}
dev_dbg(dev, "Flash Memory: JEDEC ID = 0x%x 0x%x 0x%x\n",
read_buf[0], read_buf[1], read_buf[2]);
return FW_UPLOAD_ERR_NONE;
}
static enum fw_upload_err thp7312_fw_prepare_reset(struct thp7312_device *thp7312)
{
struct device *dev = thp7312->dev;
int ret;
ret = cci_write(thp7312->regmap, THP7312_REG_FW_RESET_FLASH, 0x81, NULL);
if (ret) {
dev_err(dev, "Failed to reset flash memory: %d\n", ret);
return FW_UPLOAD_ERR_HW_ERROR;
}
return FW_UPLOAD_ERR_NONE;
}
/* TODO: Erase only the amount of blocks necessary */
static enum fw_upload_err thp7312_flash_erase(struct thp7312_device *thp7312)
{
struct device *dev = thp7312->dev;
u8 read_buf[1] = { 0 };
unsigned int i;
u8 block;
int ret;
for (block = 0; block < 3; block++) {
const u8 jedec_se[] = { SPINOR_OP_SE, block, 0x00, 0x00 };
ret = thp7312_flash_reg_write(thp7312, thp7312_jedec_wen);
if (ret < 0) {
dev_err(dev, "Failed to enable flash for writing\n");
return FW_UPLOAD_ERR_RW_ERROR;
}
ret = thp7312_flash_reg_write(thp7312, jedec_se);
if (ret < 0) {
dev_err(dev, "Failed to erase flash sector\n");
return FW_UPLOAD_ERR_RW_ERROR;
}
for (i = 0; i < THP7312_FLASH_MEMORY_ERASE_TIMEOUT; i++) {
usleep_range(100000, 101000);
thp7312_flash_reg_read(thp7312, thp7312_jedec_rdsr,
read_buf);
/* Check Busy bit. Busy == 0x0 means erase complete. */
if (!(read_buf[0] & SR_WIP))
break;
}
if (i == THP7312_FLASH_MEMORY_ERASE_TIMEOUT)
return FW_UPLOAD_ERR_TIMEOUT;
}
thp7312_flash_reg_read(thp7312, thp7312_jedec_rdsr, read_buf);
/* Check WEL bit. */
if (read_buf[0] & SR_WEL)
return FW_UPLOAD_ERR_HW_ERROR;
return FW_UPLOAD_ERR_NONE;
}
static enum fw_upload_err
thp7312_write_download_data_by_unit(struct thp7312_device *thp7312,
unsigned int addr, const u8 *data,
unsigned int size)
{
struct device *dev = thp7312->dev;
u8 *write_buf = thp7312->fw_write_buf;
int ret;
dev_dbg(dev, "%s: addr = 0x%04x, data = 0x%p, size = %u\n",
__func__, addr, data, size);
write_buf[0] = (addr >> 8) & 0xff;
write_buf[1] = (addr >> 0) & 0xff;
memcpy(&write_buf[2], data, size);
/*
* THP7312 Firmware download to RAM
* Command ID (address to download): 0x0000 - 0x7fff
* Format:: 0000 XX XX XX ........ XX
*/
ret = thp7312_write_buf(thp7312, write_buf, size + 2);
if (ret < 0)
dev_err(dev, "Unit transfer ERROR %s(): ret = %d\n", __func__, ret);
return ret >= 0 ? FW_UPLOAD_ERR_NONE : FW_UPLOAD_ERR_RW_ERROR;
}
static enum fw_upload_err thp7312_fw_load_to_ram(struct thp7312_device *thp7312,
const u8 *data, u32 size)
{
struct device *dev = thp7312->dev;
enum fw_upload_err ret;
unsigned int num_banks;
unsigned int i, j;
num_banks = DIV_ROUND_UP(size, THP7312_RAM_BANK_SIZE);
dev_dbg(dev, "%s: loading %u bytes in SRAM (%u banks)\n", __func__,
size, num_banks);
for (i = 0; i < num_banks; i++) {
const u32 bank_addr = 0x10000000 | (i * THP7312_RAM_BANK_SIZE);
unsigned int bank_size;
unsigned int num_chunks;
ret = cci_write(thp7312->regmap, THP7312_REG_FW_DEST_BANK_ADDR,
bank_addr, NULL);
if (ret)
return FW_UPLOAD_ERR_HW_ERROR;
bank_size = min_t(u32, size, THP7312_RAM_BANK_SIZE);
num_chunks = DIV_ROUND_UP(bank_size, THP7312_FW_DOWNLOAD_UNIT);
dev_dbg(dev, "%s: loading %u bytes in SRAM bank %u (%u chunks)\n",
__func__, bank_size, i, num_chunks);
for (j = 0 ; j < num_chunks; j++) {
unsigned int chunk_addr;
unsigned int chunk_size;
chunk_addr = j * THP7312_FW_DOWNLOAD_UNIT;
chunk_size = min_t(u32, size, THP7312_FW_DOWNLOAD_UNIT);
ret = thp7312_write_download_data_by_unit(thp7312, chunk_addr,
data, chunk_size);
if (ret != FW_UPLOAD_ERR_NONE) {
dev_err(dev, "Unit transfer ERROR at bank transfer %s(): %d\n",
__func__, j);
return ret;
}
data += chunk_size;
size -= chunk_size;
}
}
return FW_UPLOAD_ERR_NONE;
}
static enum fw_upload_err thp7312_fw_write_to_flash(struct thp7312_device *thp7312,
u32 dest, u32 write_size)
{
u8 command[sizeof(thp7312_cmd_write_ram_to_flash) + 6];
static const u32 cmd_size = sizeof(thp7312_cmd_write_ram_to_flash);
u64 val;
int ret;
memcpy(command, thp7312_cmd_write_ram_to_flash, cmd_size);
command[cmd_size] = (dest & 0xff0000) >> 16;
command[cmd_size + 1] = (dest & 0x00ff00) >> 8;
command[cmd_size + 2] = (dest & 0x0000ff);
command[cmd_size + 3] = ((write_size - 1) & 0xff0000) >> 16;
command[cmd_size + 4] = ((write_size - 1) & 0x00ff00) >> 8;
command[cmd_size + 5] = ((write_size - 1) & 0x0000ff);
ret = thp7312_write_buf(thp7312, command, sizeof(command));
if (ret < 0)
return FW_UPLOAD_ERR_RW_ERROR;
usleep_range(8000000, 8100000);
ret = cci_read(thp7312->regmap, THP7312_REG_FW_VERIFY_RESULT, &val,
NULL);
if (ret < 0)
return FW_UPLOAD_ERR_RW_ERROR;
return val ? FW_UPLOAD_ERR_HW_ERROR : FW_UPLOAD_ERR_NONE;
}
static enum fw_upload_err thp7312_fw_check_crc(struct thp7312_device *thp7312,
const u8 *fw_data, u32 fw_size)
{
struct device *dev = thp7312->dev;
u16 header_size = fw_size - THP7312_FW_RAM_SIZE;
u8 command[sizeof(thp7312_cmd_calc_crc) + 6];
static const u32 cmd_size = sizeof(thp7312_cmd_calc_crc);
u32 size = THP7312_FW_RAM_SIZE - 4;
u32 fw_crc;
u64 crc;
int ret;
memcpy(command, thp7312_cmd_calc_crc, cmd_size);
command[cmd_size] = 0;
command[cmd_size + 1] = (header_size >> 8) & 0xff;
command[cmd_size + 2] = header_size & 0xff;
command[cmd_size + 3] = (size >> 16) & 0xff;
command[cmd_size + 4] = (size >> 8) & 0xff;
command[cmd_size + 5] = size & 0xff;
ret = thp7312_write_buf(thp7312, command, sizeof(command));
if (ret < 0)
return FW_UPLOAD_ERR_RW_ERROR;
usleep_range(2000000, 2100000);
fw_crc = get_unaligned_be32(&fw_data[fw_size - 4]);
ret = cci_read(thp7312->regmap, THP7312_REG_FW_CRC_RESULT, &crc, NULL);
if (ret < 0)
return FW_UPLOAD_ERR_RW_ERROR;
if (fw_crc != crc) {
dev_err(dev, "CRC mismatch: firmware 0x%08x, flash 0x%08llx\n",
fw_crc, crc);
return FW_UPLOAD_ERR_HW_ERROR;
}
return FW_UPLOAD_ERR_NONE;
}
static enum fw_upload_err thp7312_fw_prepare(struct fw_upload *fw_upload,
const u8 *data, u32 size)
{
struct thp7312_device *thp7312 = fw_upload->dd_handle;
struct device *dev = thp7312->dev;
enum fw_upload_err ret;
mutex_lock(&thp7312->fw_lock);
thp7312->fw_cancel = false;
mutex_unlock(&thp7312->fw_lock);
if (size < THP7312_FW_MIN_SIZE || size > THP7312_FW_MAX_SIZE) {
dev_err(dev, "%s: Invalid firmware size %d; must be between %d and %d\n",
__func__, size, THP7312_FW_MIN_SIZE, THP7312_FW_MAX_SIZE);
return FW_UPLOAD_ERR_INVALID_SIZE;
}
ret = thp7312_fw_prepare_config(thp7312);
if (ret != FW_UPLOAD_ERR_NONE)
return ret;
ret = thp7312_fw_prepare_check(thp7312);
if (ret != FW_UPLOAD_ERR_NONE)
return ret;
ret = thp7312_fw_prepare_reset(thp7312);
if (ret != FW_UPLOAD_ERR_NONE)
return ret;
mutex_lock(&thp7312->fw_lock);
ret = thp7312->fw_cancel ? FW_UPLOAD_ERR_CANCELED : FW_UPLOAD_ERR_NONE;
mutex_unlock(&thp7312->fw_lock);
return ret;
}
static enum fw_upload_err thp7312_fw_write(struct fw_upload *fw_upload,
const u8 *data, u32 offset,
u32 size, u32 *written)
{
struct thp7312_device *thp7312 = fw_upload->dd_handle;
struct device *dev = thp7312->dev;
u16 header_size = size - THP7312_FW_RAM_SIZE;
enum fw_upload_err ret;
bool cancel;
mutex_lock(&thp7312->fw_lock);
cancel = thp7312->fw_cancel;
mutex_unlock(&thp7312->fw_lock);
if (cancel)
return FW_UPLOAD_ERR_CANCELED;
ret = thp7312_flash_erase(thp7312);
if (ret != FW_UPLOAD_ERR_NONE)
return ret;
ret = thp7312_fw_load_to_ram(thp7312, data, THP7312_FW_RAM_SIZE);
if (ret != FW_UPLOAD_ERR_NONE)
return ret;
ret = thp7312_fw_write_to_flash(thp7312, 0, 0x1ffff);
if (ret != FW_UPLOAD_ERR_NONE)
return ret;
ret = thp7312_fw_load_to_ram(thp7312, data + THP7312_FW_RAM_SIZE, header_size);
if (ret != FW_UPLOAD_ERR_NONE)
return ret;
ret = thp7312_fw_write_to_flash(thp7312, 0x20000, header_size - 1);
if (ret != FW_UPLOAD_ERR_NONE)
return ret;
ret = thp7312_fw_check_crc(thp7312, data, size);
if (ret != FW_UPLOAD_ERR_NONE)
return ret;
dev_info(dev, "Successfully wrote firmware\n");
*written = size;
return FW_UPLOAD_ERR_NONE;
}
static enum fw_upload_err thp7312_fw_poll_complete(struct fw_upload *fw_upload)
{
return FW_UPLOAD_ERR_NONE;
}
/*
* This may be called asynchronously with an on-going update. All other
* functions are called sequentially in a single thread. To avoid contention on
* register accesses, only update the cancel_request flag. Other functions will
* check this flag and handle the cancel request synchronously.
*/
static void thp7312_fw_cancel(struct fw_upload *fw_upload)
{
struct thp7312_device *thp7312 = fw_upload->dd_handle;
mutex_lock(&thp7312->fw_lock);
thp7312->fw_cancel = true;
mutex_unlock(&thp7312->fw_lock);
}
static const struct fw_upload_ops thp7312_fw_upload_ops = {
.prepare = thp7312_fw_prepare,
.write = thp7312_fw_write,
.poll_complete = thp7312_fw_poll_complete,
.cancel = thp7312_fw_cancel,
};
static int thp7312_register_flash_mode(struct thp7312_device *thp7312)
{
struct device *dev = thp7312->dev;
struct fw_upload *fwl;
u64 val;
int ret;
dev_info(dev, "booted in flash mode\n");
mutex_init(&thp7312->fw_lock);
thp7312->fw_write_buf = devm_kzalloc(dev, THP7312_FW_DOWNLOAD_UNIT + 2,
GFP_KERNEL);
if (!thp7312->fw_write_buf)
return -ENOMEM;
ret = __thp7312_power_on(thp7312);
if (ret < 0)
return dev_err_probe(dev, ret, "Failed to power on\n");
ret = cci_read(thp7312->regmap, THP7312_REG_FW_STATUS, &val, NULL);
if (ret) {
dev_err_probe(dev, ret, "Camera status read failed\n");
goto error;
}
fwl = firmware_upload_register(THIS_MODULE, dev, "thp7312-firmware",
&thp7312_fw_upload_ops, thp7312);
if (IS_ERR(fwl)) {
ret = PTR_ERR(fwl);
dev_err_probe(dev, ret, "Failed to register firmware upload\n");
goto error;
}
thp7312->fwl = fwl;
return 0;
error:
__thp7312_power_off(thp7312);
return ret;
}
/* -----------------------------------------------------------------------------
* Probe & Remove
*/
static int thp7312_get_regulators(struct thp7312_device *thp7312)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(thp7312->supplies); i++)
thp7312->supplies[i].supply = thp7312_supply_name[i];
return devm_regulator_bulk_get(thp7312->dev,
ARRAY_SIZE(thp7312->supplies),
thp7312->supplies);
}
static int thp7312_sensor_parse_dt(struct thp7312_device *thp7312,
struct fwnode_handle *node)
{
struct device *dev = thp7312->dev;
struct thp7312_sensor *sensor;
const char *model;
u8 data_lanes[4];
u32 values[4];
unsigned int i;
u32 reg;
int ret;
/* Retrieve the sensor index from the reg property. */
ret = fwnode_property_read_u32(node, "reg", &reg);
if (ret < 0) {
dev_err(dev, "'reg' property missing in sensor node\n");
return -EINVAL;
}
if (reg >= ARRAY_SIZE(thp7312->sensors)) {
dev_err(dev, "Out-of-bounds 'reg' value %u\n", reg);
return -EINVAL;
}
sensor = &thp7312->sensors[reg];
if (sensor->info) {
dev_err(dev, "Duplicate entry for sensor %u\n", reg);
return -EINVAL;
}
ret = fwnode_property_read_string(node, "thine,model", &model);
if (ret < 0) {
dev_err(dev, "'thine,model' property missing in sensor node\n");
return -EINVAL;
}
for (i = 0; i < ARRAY_SIZE(thp7312_sensor_info); i++) {
const struct thp7312_sensor_info *info =
&thp7312_sensor_info[i];
if (!strcmp(info->model, model)) {
sensor->info = info;
break;
}
}
if (!sensor->info) {
dev_err(dev, "Unsupported sensor model %s\n", model);
return -EINVAL;
}
ret = fwnode_property_read_u32_array(node, "data-lanes", values,
ARRAY_SIZE(values));
if (ret < 0) {
dev_err(dev, "Failed to read property data-lanes: %d\n", ret);
return ret;
}
for (i = 0; i < ARRAY_SIZE(data_lanes); ++i)
data_lanes[i] = values[i];
ret = thp7312_map_data_lanes(&sensor->lane_remap, data_lanes,
ARRAY_SIZE(data_lanes));
if (ret) {
dev_err(dev, "Invalid sensor@%u data-lanes value\n", reg);
return ret;
}
return 0;
}
static int thp7312_parse_dt(struct thp7312_device *thp7312)
{
struct v4l2_fwnode_endpoint ep = {
.bus_type = V4L2_MBUS_CSI2_DPHY,
};
struct device *dev = thp7312->dev;
struct fwnode_handle *endpoint;
struct fwnode_handle *sensors;
unsigned int num_sensors = 0;
struct fwnode_handle *node;
int ret;
endpoint = fwnode_graph_get_next_endpoint(dev_fwnode(dev), NULL);
if (!endpoint)
return dev_err_probe(dev, -EINVAL, "Endpoint node not found\n");
ret = v4l2_fwnode_endpoint_parse(endpoint, &ep);
fwnode_handle_put(endpoint);
if (ret)
return dev_err_probe(dev, ret, "Could not parse endpoint\n");
ret = thp7312_map_data_lanes(&thp7312->lane_remap,
ep.bus.mipi_csi2.data_lanes,
ep.bus.mipi_csi2.num_data_lanes);
if (ret) {
dev_err(dev, "Invalid data-lanes value\n");
return ret;
}
/*
* The thine,boot-mode property is optional and default to
* THP7312_BOOT_MODE_SPI_MASTER (1).
*/
thp7312->boot_mode = THP7312_BOOT_MODE_SPI_MASTER;
ret = device_property_read_u32(dev, "thine,boot-mode",
&thp7312->boot_mode);
if (ret && ret != -EINVAL)
return dev_err_probe(dev, ret, "Property '%s' is invalid\n",
"thine,boot-mode");
if (thp7312->boot_mode != THP7312_BOOT_MODE_2WIRE_SLAVE &&
thp7312->boot_mode != THP7312_BOOT_MODE_SPI_MASTER)
return dev_err_probe(dev, -EINVAL, "Invalid '%s' value %u\n",
"thine,boot-mode", thp7312->boot_mode);
/* Sensors */
sensors = device_get_named_child_node(dev, "sensors");
if (!sensors) {
dev_err(dev, "'sensors' child node not found\n");
return -EINVAL;
}
fwnode_for_each_available_child_node(sensors, node) {
if (fwnode_name_eq(node, "sensor")) {
if (!thp7312_sensor_parse_dt(thp7312, node))
num_sensors++;
}
}
fwnode_handle_put(sensors);
if (!num_sensors) {
dev_err(dev, "No sensor found\n");
return -EINVAL;
}
return 0;
}
static int thp7312_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
struct thp7312_device *thp7312;
int ret;
thp7312 = devm_kzalloc(dev, sizeof(*thp7312), GFP_KERNEL);
if (!thp7312)
return -ENOMEM;
thp7312->dev = dev;
thp7312->regmap = devm_cci_regmap_init_i2c(client, 16);
if (IS_ERR(thp7312->regmap))
return dev_err_probe(dev, PTR_ERR(thp7312->regmap),
"Unable to initialize I2C\n");
ret = thp7312_parse_dt(thp7312);
if (ret < 0)
return ret;
ret = thp7312_get_regulators(thp7312);
if (ret)
return dev_err_probe(dev, ret, "Failed to get regulators\n");
thp7312->iclk = devm_clk_get(dev, NULL);
if (IS_ERR(thp7312->iclk))
return dev_err_probe(dev, PTR_ERR(thp7312->iclk),
"Failed to get iclk\n");
thp7312->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(thp7312->reset_gpio))
return dev_err_probe(dev, PTR_ERR(thp7312->reset_gpio),
"Failed to get reset gpio\n");
if (thp7312->boot_mode == THP7312_BOOT_MODE_2WIRE_SLAVE)
return thp7312_register_flash_mode(thp7312);
v4l2_i2c_subdev_init(&thp7312->sd, client, &thp7312_subdev_ops);
thp7312->sd.internal_ops = &thp7312_internal_ops;
thp7312->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
thp7312->pad.flags = MEDIA_PAD_FL_SOURCE;
thp7312->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
ret = media_entity_pads_init(&thp7312->sd.entity, 1, &thp7312->pad);
if (ret)
return ret;
/*
* Enable power management. The driver supports runtime PM, but needs to
* work when runtime PM is disabled in the kernel. To that end, power
* the device manually here.
*/
ret = thp7312_power_on(thp7312);
if (ret)
goto err_entity_cleanup;
ret = thp7312_read_firmware_version(thp7312);
if (ret < 0) {
dev_err(dev, "Camera is not found\n");
goto err_power_off;
}
ret = thp7312_init_controls(thp7312);
if (ret) {
dev_err(dev, "Failed to initialize controls\n");
goto err_power_off;
}
thp7312->sd.ctrl_handler = &thp7312->ctrl_handler;
thp7312->sd.state_lock = thp7312->ctrl_handler.lock;
ret = v4l2_subdev_init_finalize(&thp7312->sd);
if (ret < 0) {
dev_err(dev, "Subdev active state initialization failed\n");
goto err_free_ctrls;
}
/*
* Enable runtime PM with autosuspend. As the device has been powered
* manually, mark it as active, and increase the usage count without
* resuming the device.
*/
pm_runtime_set_active(dev);
pm_runtime_get_noresume(dev);
pm_runtime_enable(dev);
pm_runtime_set_autosuspend_delay(dev, 1000);
pm_runtime_use_autosuspend(dev);
ret = v4l2_async_register_subdev(&thp7312->sd);
if (ret < 0) {
dev_err(dev, "Subdev registration failed\n");
goto err_pm;
}
/*
* Decrease the PM usage count. The device will get suspended after the
* autosuspend delay, turning the power off.
*/
pm_runtime_mark_last_busy(dev);
pm_runtime_put_autosuspend(dev);
dev_info(dev, "THP7312 firmware version %02u.%02u\n",
THP7312_FW_VERSION_MAJOR(thp7312->fw_version),
THP7312_FW_VERSION_MINOR(thp7312->fw_version));
return 0;
err_pm:
pm_runtime_disable(dev);
pm_runtime_put_noidle(dev);
v4l2_subdev_cleanup(&thp7312->sd);
err_free_ctrls:
v4l2_ctrl_handler_free(&thp7312->ctrl_handler);
err_power_off:
thp7312_power_off(thp7312);
err_entity_cleanup:
media_entity_cleanup(&thp7312->sd.entity);
return ret;
}
static void thp7312_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct thp7312_device *thp7312 = to_thp7312_dev(sd);
if (thp7312->boot_mode == THP7312_BOOT_MODE_2WIRE_SLAVE) {
firmware_upload_unregister(thp7312->fwl);
__thp7312_power_off(thp7312);
return;
}
v4l2_async_unregister_subdev(&thp7312->sd);
v4l2_subdev_cleanup(&thp7312->sd);
media_entity_cleanup(&thp7312->sd.entity);
v4l2_ctrl_handler_free(&thp7312->ctrl_handler);
/*
* Disable runtime PM. In case runtime PM is disabled in the kernel,
* make sure to turn power off manually.
*/
pm_runtime_disable(thp7312->dev);
if (!pm_runtime_status_suspended(thp7312->dev))
thp7312_power_off(thp7312);
pm_runtime_set_suspended(thp7312->dev);
}
static const struct of_device_id thp7312_dt_ids[] = {
{ .compatible = "thine,thp7312" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, thp7312_dt_ids);
static struct i2c_driver thp7312_i2c_driver = {
.driver = {
.name = "thp7312",
.pm = &thp7312_pm_ops,
.of_match_table = thp7312_dt_ids,
},
.probe = thp7312_probe,
.remove = thp7312_remove,
};
module_i2c_driver(thp7312_i2c_driver);
MODULE_DESCRIPTION("THP7312 MIPI Camera Subdev Driver");
MODULE_LICENSE("GPL");
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