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tegrakernel/kernel/nvidia/drivers/media/i2c/imx274.c

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/*
* imx274.c - imx274 sensor driver
*
* Copyright (c) 2015-2021, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/slab.h>
#include <linux/uaccess.h>
#include <linux/gpio.h>
#include <linux/module.h>
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <media/tegra_v4l2_camera.h>
#include <media/tegracam_core.h>
#include <media/imx274.h>
#include "imx274_mode_tbls.h"
#define IMX274_GAIN_FACTOR 1000000
#define IMX274_MIN_GAIN (1 * IMX274_GAIN_FACTOR)
#define IMX274_MAX_ANALOG_GAIN (IMX274_MIN_GAIN * 111 / 5)
#define IMX274_MAX_DIGITAL_GAIN 64
#define IMX274_MAX_GAIN (IMX274_MAX_ANALOG_GAIN * IMX274_MAX_DIGITAL_GAIN)
#define IMX274_SENSOR_INTERNAL_CLK_FREQ 72000000
#define IMX274_4K_MODE_HMAX 263
#define IMX274_4K_MODE_MIN_VMAX 4550
#define IMX274_4K_MODE_OFFSET 112
#define IMX274_DOL_MODE_CLOCKS_OFFSET 112
#define IMX274_DOL_4K_MODE_HMAX 1052
#define IMX274_DOL_4K_MODE_MIN_VMAX 2284
#define IMX274_DOL_4K_MODE_DEFAULT_RHS1 50
#define IMX274_DOL_4K_MIN_SHR_DOL1 6
#define IMX274_DOL_1080P_MODE_HMAX 1040
#define IMX274_DOL_1080P_MODE_MIN_VMAX 1155
#define IMX274_DOL_1080P_MODE_DEFAULT_RHS1 38
#define IMX274_DOL_1080P_MIN_SHR_DOL1 4
#define IMX274_1080P_MODE_HMAX 260
#define IMX274_1080P_MODE_MIN_VMAX 4620
#define IMX274_1080P_MODE_OFFSET 112
#define IMX274_EEPROM_ADDRESS 0x57
#define IMX274_EEPROM_SIZE 256
#define IMX274_EEPROM_STR_SIZE (IMX274_EEPROM_SIZE * 2)
#define IMX274_EEPROM_BLOCK_SIZE (1 << 8)
#define IMX274_EEPROM_NUM_BLOCKS \
(IMX274_EEPROM_SIZE / IMX274_EEPROM_BLOCK_SIZE)
#define IMX274_FUSE_ID_START_ADDR 91
#define IMX274_FUSE_ID_SIZE 8
#define IMX274_FUSE_ID_STR_SIZE (IMX274_FUSE_ID_SIZE * 2)
static const struct of_device_id imx274_of_match[] = {
{ .compatible = "nvidia,imx274", },
{ },
};
MODULE_DEVICE_TABLE(of, imx274_of_match);
static const u32 ctrl_cid_list[] = {
TEGRA_CAMERA_CID_GAIN,
TEGRA_CAMERA_CID_EXPOSURE,
TEGRA_CAMERA_CID_EXPOSURE_SHORT,
TEGRA_CAMERA_CID_FRAME_RATE,
TEGRA_CAMERA_CID_HDR_EN,
TEGRA_CAMERA_CID_FUSE_ID,
};
struct imx274 {
struct i2c_client *i2c_client;
struct v4l2_subdev *subdev;
const char *devname;
struct dentry *debugfs_dir;
struct mutex streaming_lock;
bool streaming;
struct camera_common_eeprom_data eeprom[IMX274_EEPROM_NUM_BLOCKS];
u8 eeprom_buf[IMX274_EEPROM_STR_SIZE];
u8 fuse_id[IMX274_FUSE_ID_SIZE];
u32 frame_length;
u32 vmax;
s64 last_exposure_long;
s64 last_exposure_short;
s32 group_hold_prev;
bool group_hold_en;
struct regmap *regmap;
struct camera_common_data *s_data;
struct tegracam_device *tc_dev;
};
static const struct regmap_config sensor_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
.cache_type = REGCACHE_RBTREE,
};
static inline void imx274_get_vmax_regs(imx274_reg *regs,
u32 vmax)
{
regs->addr = IMX274_VMAX_ADDR_MSB;
regs->val = (vmax >> 16) & 0x0f;
(regs + 1)->addr = IMX274_VMAX_ADDR_MID;
(regs + 1)->val = (vmax >> 8) & 0xff;
(regs + 2)->addr = IMX274_VMAX_ADDR_LSB;
(regs + 2)->val = (vmax) & 0xff;
}
static inline void imx274_get_shr_regs(imx274_reg *regs,
u16 shr)
{
regs->addr = IMX274_SHR_ADDR_MSB;
regs->val = (shr >> 8) & 0xff;
(regs + 1)->addr = IMX274_SHR_ADDR_LSB;
(regs + 1)->val = (shr) & 0xff;
}
static inline void imx274_get_shr_dol1_regs(imx274_reg *regs,
u16 shr)
{
regs->addr = IMX274_SHR_DOL1_ADDR_MSB;
regs->val = (shr >> 8) & 0xff;
(regs + 1)->addr = IMX274_SHR_DOL1_ADDR_LSB;
(regs + 1)->val = (shr) & 0xff;
}
static inline void imx274_get_shr_dol2_regs(imx274_reg *regs,
u16 shr)
{
regs->addr = IMX274_SHR_DOL2_ADDR_MSB;
regs->val = (shr >> 8) & 0xff;
(regs + 1)->addr = IMX274_SHR_DOL2_ADDR_LSB;
(regs + 1)->val = (shr) & 0xff;
}
static inline void imx274_get_gain_reg(imx274_reg *regs,
u16 gain)
{
regs->addr = IMX274_ANALOG_GAIN_ADDR_MSB;
regs->val = (gain >> 8) & 0xff;
(regs + 1)->addr = IMX274_ANALOG_GAIN_ADDR_LSB;
(regs + 1)->val = (gain) & 0xff;
}
static int test_mode;
module_param(test_mode, int, 0644);
static inline int imx274_read_reg(struct camera_common_data *s_data,
u16 addr, u8 *val)
{
int err = 0;
u32 reg_val = 0;
err = regmap_read(s_data->regmap, addr, &reg_val);
*val = reg_val & 0xFF;
return err;
}
static int imx274_write_reg(struct camera_common_data *s_data, u16 addr, u8 val)
{
int err;
struct device *dev = s_data->dev;
err = regmap_write(s_data->regmap, addr, val);
if (err)
dev_err(dev, "%s: i2c write failed, %x = %x\n",
__func__, addr, val);
return err;
}
static int imx274_write_table(struct imx274 *priv,
const imx274_reg table[])
{
return regmap_util_write_table_8(priv->s_data->regmap,
table,
NULL, 0,
IMX274_TABLE_WAIT_MS,
IMX274_TABLE_END);
}
static int imx274_set_gain(struct tegracam_device *tc_dev, s64 val);
static int imx274_set_frame_rate(struct tegracam_device *tc_dev, s64 val);
static int imx274_set_exposure(struct tegracam_device *tc_dev, s64 val);
static int imx274_set_exposure_shr(struct tegracam_device *tc_dev, s64 val);
static int imx274_set_exposure_shr_dol_short(struct tegracam_device *tc_dev,
s64 val);
static int imx274_set_exposure_shr_dol_long(struct tegracam_device *tc_dev,
s64 val);
static bool imx274_in_dol_mode(const struct imx274 *priv);
static int imx274_set_group_hold(struct tegracam_device *tc_dev, bool val)
{
struct camera_common_data *s_data = tc_dev->s_data;
struct imx274 *priv = (struct imx274 *)tc_dev->priv;
struct device *dev = tc_dev->dev;
int err;
priv->group_hold_prev = val;
err = imx274_write_reg(s_data,
IMX274_GROUP_HOLD_ADDR, val);
if (err) {
dev_err(dev,
"%s: Group hold control error\n", __func__);
return err;
}
return 0;
}
static int imx274_set_gain(struct tegracam_device *tc_dev, s64 val)
{
struct camera_common_data *s_data = tc_dev->s_data;
struct imx274 *priv = (struct imx274 *)tc_dev->priv;
struct device *dev = tc_dev->dev;
const struct sensor_mode_properties *mode =
&s_data->sensor_props.sensor_modes[s_data->mode];
imx274_reg reg_list[2];
int err;
int i = 0;
u32 again;
u8 dgain;
u16 reg_again;
u8 reg_dgain;
dev_dbg(dev, "%s: val: %lld\n", __func__, val);
if (val < IMX274_MIN_GAIN)
val = IMX274_MIN_GAIN;
else if (val > IMX274_MAX_GAIN)
val = IMX274_MAX_GAIN;
if (val > (IMX274_MAX_ANALOG_GAIN * 32)) {
dgain = 64;
reg_dgain = 0x06;
} else if (val > (IMX274_MAX_ANALOG_GAIN * 16)) {
dgain = 32;
reg_dgain = 0x05;
} else if (val > (IMX274_MAX_ANALOG_GAIN * 8)) {
dgain = 16;
reg_dgain = 0x04;
} else if (val > (IMX274_MAX_ANALOG_GAIN * 4)) {
dgain = 8;
reg_dgain = 0x03;
} else if (val > (IMX274_MAX_ANALOG_GAIN * 2)) {
dgain = 4;
reg_dgain = 0x02;
} else if (val > (IMX274_MAX_ANALOG_GAIN)) {
dgain = 2;
reg_dgain = 0x01;
} else {
dgain = 1;
reg_dgain = 0x00;
}
reg_again = 2048 -
(2048 * dgain * mode->control_properties.gain_factor / val);
if (reg_again > 1957)
reg_again = 1957;
again = val / (dgain * mode->control_properties.gain_factor);
imx274_get_gain_reg(reg_list, reg_again);
dev_dbg(dev, "%s: val:%lld, gain:%lld, again:(%d, %d), dgain:(%d, %d)\n",
__func__,
val,
val / IMX274_MIN_GAIN,
again,
reg_again,
dgain,
reg_dgain);
/* writing analog gain */
for (i = 0; i < 2; i++) {
err = imx274_write_reg(priv->s_data, reg_list[i].addr,
reg_list[i].val);
if (err)
goto fail;
}
/* writing digital gain */
err = imx274_write_reg(priv->s_data, IMX274_DIGITAL_GAIN_ADDR,
reg_dgain);
if (err)
goto fail;
return 0;
fail:
dev_err(dev, "%s: GAIN control error\n", __func__);
return err;
}
static
int imx274_set_exposure_shr_dol_short(struct tegracam_device *tc_dev, s64 val)
{
struct camera_common_data *s_data = tc_dev->s_data;
struct imx274 *priv = (struct imx274 *)tc_dev->priv;
struct device *dev = tc_dev->dev;
const struct sensor_mode_properties *mode =
&s_data->sensor_props.sensor_modes[s_data->mode];
struct v4l2_control control;
int hdr_en;
imx274_reg reg_list[2];
u16 rhs1, hmax;
s32 shr_dol1, min_shr;
int err;
int i = 0;
u64 freq = IMX274_SENSOR_INTERNAL_CLK_FREQ;
control.id = TEGRA_CAMERA_CID_HDR_EN;
err = camera_common_g_ctrl(priv->s_data, &control);
if (err < 0) {
dev_err(dev, "could not find device ctrl.\n");
return err;
}
hdr_en = switch_ctrl_qmenu[control.value];
if (hdr_en != SWITCH_ON) {
dev_dbg(dev, "%s: SHR DOL1 is ignored for non-HDR mode\n",
__func__);
return 0;
}
if (s_data->mode == IMX274_MODE_3840X2160_DOL_30FPS) {
rhs1 = IMX274_DOL_4K_MODE_DEFAULT_RHS1;
min_shr = IMX274_DOL_4K_MIN_SHR_DOL1;
hmax = IMX274_DOL_4K_MODE_HMAX;
} else if (s_data->mode == IMX274_MODE_1920X1080_DOL_60FPS) {
rhs1 = IMX274_DOL_1080P_MODE_DEFAULT_RHS1;
min_shr = IMX274_DOL_1080P_MIN_SHR_DOL1;
hmax = IMX274_DOL_1080P_MODE_HMAX;
} else {
dev_err(dev, "%s: error, invalid dol mode\n", __func__);
err = -EINVAL;
goto fail;
}
priv->last_exposure_short = val;
shr_dol1 = rhs1 -
(val * freq /
mode->control_properties.exposure_factor -
IMX274_DOL_MODE_CLOCKS_OFFSET) /
hmax - 1 / 4;
if (shr_dol1 <= min_shr)
shr_dol1 = min_shr;
if (shr_dol1 > rhs1 - 2)
shr_dol1 = rhs1 - 2;
dev_dbg(dev,
"%s: et:%d, shr_dol1:%d, rhs1:%d, Pclk:%lld, LL:%d, HMAX:%d\n",
__func__,
(int)(val * 1000000 / mode->control_properties.exposure_factor),
shr_dol1,
rhs1,
mode->signal_properties.pixel_clock.val,
mode->image_properties.line_length,
hmax);
imx274_get_shr_dol1_regs(reg_list, (u16)shr_dol1);
for (i = 0; i < 2; i++) {
err = imx274_write_reg(priv->s_data, reg_list[i].addr,
reg_list[i].val);
if (err)
goto fail;
}
return 0;
fail:
dev_err(dev, "%s: EXPOSURE short control is not set\n", __func__);
return err;
}
static
int imx274_set_exposure_shr_dol_long(struct tegracam_device *tc_dev, s64 val)
{
struct camera_common_data *s_data = tc_dev->s_data;
struct imx274 *priv = (struct imx274 *)tc_dev->priv;
struct device *dev = tc_dev->dev;
const struct sensor_mode_properties *mode =
&s_data->sensor_props.sensor_modes[s_data->mode];
imx274_reg reg_list[2];
u16 hmax, rhs1;
s32 shr_dol2, min_shr;
int err;
int i = 0;
u64 freq = IMX274_SENSOR_INTERNAL_CLK_FREQ;
if (s_data->mode == IMX274_MODE_3840X2160_DOL_30FPS) {
rhs1 = IMX274_DOL_4K_MODE_DEFAULT_RHS1;
min_shr = IMX274_DOL_4K_MIN_SHR_DOL1;
hmax = IMX274_DOL_4K_MODE_HMAX;
} else if (s_data->mode == IMX274_MODE_1920X1080_DOL_60FPS) {
rhs1 = IMX274_DOL_1080P_MODE_DEFAULT_RHS1;
min_shr = IMX274_DOL_1080P_MIN_SHR_DOL1;
hmax = IMX274_DOL_1080P_MODE_HMAX;
} else {
dev_err(dev, "%s: error, invalid dol mode\n", __func__);
err = -EINVAL;
goto fail;
}
priv->last_exposure_long = val;
shr_dol2 = priv->vmax -
(val * freq /
mode->control_properties.exposure_factor -
IMX274_DOL_MODE_CLOCKS_OFFSET) /
hmax - 1 / 4;
if (shr_dol2 < rhs1 + min_shr)
shr_dol2 = rhs1 + min_shr;
if (shr_dol2 > priv->vmax - 4)
shr_dol2 = priv->vmax - 4;
dev_dbg(dev,
"%s: et:%d, shr_dol2:%d, vmax:%d, Pclk:%lld, LL:%d, HMAX:%d\n",
__func__,
(int)(val * 1000000 / mode->control_properties.exposure_factor),
shr_dol2,
priv->vmax,
mode->signal_properties.pixel_clock.val,
mode->image_properties.line_length,
hmax);
imx274_get_shr_dol2_regs(reg_list, (u16)shr_dol2);
for (i = 0; i < 2; i++) {
err = imx274_write_reg(priv->s_data, reg_list[i].addr,
reg_list[i].val);
if (err)
goto fail;
}
return 0;
fail:
dev_err(dev, "%s: EXPOSURE_SHORT control error\n", __func__);
return err;
}
static bool imx274_in_dol_mode(const struct imx274 *priv)
{
const struct camera_common_data *s_data = priv->s_data;
switch (s_data->mode) {
case IMX274_MODE_3840X2160_DOL_30FPS:
case IMX274_MODE_1920X1080_DOL_60FPS:
return true;
default:
return false;
}
}
static int imx274_set_frame_rate(struct tegracam_device *tc_dev, s64 val)
{
struct camera_common_data *s_data = tc_dev->s_data;
struct imx274 *priv = (struct imx274 *)tc_dev->priv;
struct device *dev = tc_dev->dev;
const struct sensor_mode_properties *mode =
&s_data->sensor_props.sensor_modes[s_data->mode];
struct v4l2_control control;
int hdr_en;
imx274_reg reg_list[3];
int err;
int i = 0;
u8 svr;
u64 freq = IMX274_SENSOR_INTERNAL_CLK_FREQ;
dev_dbg(dev, "%s: val: %lld\n", __func__, val);
imx274_read_reg(priv->s_data, IMX274_SVR_ADDR, &svr);
if (s_data->mode == IMX274_MODE_3840X2160_DOL_30FPS) {
priv->vmax = (u32)(freq *
mode->control_properties.framerate_factor /
(val *
IMX274_DOL_4K_MODE_HMAX));
if (priv->vmax < IMX274_DOL_4K_MODE_MIN_VMAX)
priv->vmax = IMX274_DOL_4K_MODE_MIN_VMAX;
} else if (s_data->mode == IMX274_MODE_1920X1080_DOL_60FPS) {
priv->vmax = (u32)(freq *
mode->control_properties.framerate_factor /
(val *
IMX274_DOL_1080P_MODE_HMAX));
if (priv->vmax < IMX274_DOL_1080P_MODE_MIN_VMAX)
priv->vmax = IMX274_DOL_1080P_MODE_MIN_VMAX;
} else if (s_data->mode == IMX274_MODE_1920X1080) {
priv->vmax = (u32)(freq *
mode->control_properties.framerate_factor /
(val *
IMX274_1080P_MODE_HMAX));
if (priv->vmax < IMX274_1080P_MODE_MIN_VMAX)
priv->vmax = IMX274_1080P_MODE_MIN_VMAX;
} else {
priv->vmax = (u32)(freq *
mode->control_properties.framerate_factor /
(val *
IMX274_4K_MODE_HMAX));
if (priv->vmax < IMX274_4K_MODE_MIN_VMAX)
priv->vmax = IMX274_4K_MODE_MIN_VMAX;
}
imx274_get_vmax_regs(reg_list, priv->vmax);
for (i = 0; i < 3; i++) {
err = imx274_write_reg(priv->s_data, reg_list[i].addr,
reg_list[i].val);
if (err)
goto fail;
}
dev_dbg(dev, "%s: PCLK:%lld, LL:%d, fps:%lld, VMAX:%d\n", __func__,
mode->signal_properties.pixel_clock.val,
mode->image_properties.line_length,
val / mode->control_properties.framerate_factor,
priv->vmax);
control.id = TEGRA_CAMERA_CID_HDR_EN;
err = camera_common_g_ctrl(priv->s_data, &control);
if (err < 0) {
dev_err(dev, "could not find device ctrl.\n");
return err;
}
hdr_en = switch_ctrl_qmenu[control.value];
if ((hdr_en == SWITCH_ON && imx274_in_dol_mode(priv))
&& (priv->last_exposure_long != 0)) {
err = imx274_set_exposure_shr_dol_long(tc_dev,
priv->last_exposure_long);
if (err)
dev_err(dev, "%s: error exposure time dol long\n",
__func__);
err = imx274_set_exposure_shr_dol_short(tc_dev,
priv->last_exposure_short);
if (err)
dev_err(dev, "%s: error exposure time dol short\n",
__func__);
}
return 0;
fail:
dev_err(dev, "%s: FRAME_RATE control error\n", __func__);
return err;
}
static
u16 imx274_calculate_exposure_shr(struct tegracam_device *tc_dev, s64 val)
{
struct camera_common_data *s_data = tc_dev->s_data;
struct imx274 *priv = (struct imx274 *)tc_dev->priv;
struct device *dev = tc_dev->dev;
const struct sensor_mode_properties *mode =
&s_data->sensor_props.sensor_modes[s_data->mode];
u8 svr;
u16 shr;
u64 freq = IMX274_SENSOR_INTERNAL_CLK_FREQ;
dev_dbg(dev, "%s: val: %lld\n", __func__, val);
imx274_read_reg(priv->s_data, IMX274_SVR_ADDR, &svr);
if (s_data->mode == IMX274_MODE_1920X1080) {
shr = priv->vmax -
(u32) (val * freq /
mode->control_properties.exposure_factor -
IMX274_1080P_MODE_OFFSET) /
IMX274_1080P_MODE_HMAX;
if (shr > priv->vmax - 4)
shr = priv->vmax - 4;
if (shr < 8)
shr = 8;
} else {
shr = priv->vmax -
(u32) (val * freq /
mode->control_properties.exposure_factor -
IMX274_4K_MODE_OFFSET) /
IMX274_4K_MODE_HMAX;
if (shr < 12)
shr = 12;
if (shr > priv->vmax - 4)
shr = priv->vmax - 4;
}
dev_dbg(dev, "%s: shr: %u vmax: %d\n", __func__, shr, priv->vmax);
return shr;
}
static int imx274_set_exposure(struct tegracam_device *tc_dev, s64 val)
{
struct imx274 *priv = (struct imx274 *)tc_dev->priv;
struct device *dev = tc_dev->dev;
struct v4l2_control control;
int hdr_en;
int err;
dev_dbg(dev, "%s: val: %lld\n", __func__, val);
control.id = TEGRA_CAMERA_CID_HDR_EN;
err = camera_common_g_ctrl(priv->s_data, &control);
if (err < 0) {
dev_err(dev, "could not find device ctrl.\n");
return err;
}
hdr_en = switch_ctrl_qmenu[control.value];
if (hdr_en == SWITCH_ON && imx274_in_dol_mode(priv)) {
err = imx274_set_exposure_shr_dol_long(tc_dev, val);
if (err)
dev_err(dev,
"%s: error exposure time dol long override\n", __func__);
} else {
err = imx274_set_exposure_shr(tc_dev, val);
if (err)
dev_err(dev,
"%s: error exposure time SHR override\n", __func__);
}
return err;
}
static int imx274_set_exposure_shr(struct tegracam_device *tc_dev, s64 val)
{
struct imx274 *priv = (struct imx274 *)tc_dev->priv;
struct device *dev = tc_dev->dev;
imx274_reg reg_list[2];
int err;
u16 shr;
int i = 0;
dev_dbg(dev, "%s: val: %lld\n", __func__, val);
shr = imx274_calculate_exposure_shr(tc_dev, val);
imx274_get_shr_regs(reg_list, shr);
for (i = 0; i < 2; i++) {
err = imx274_write_reg(priv->s_data, reg_list[i].addr,
reg_list[i].val);
if (err)
goto fail;
}
return 0;
fail:
dev_err(dev, "%s: Exposure control error\n", __func__);
return err;
}
static int imx274_fill_string_ctrl(struct tegracam_device *tc_dev,
struct v4l2_ctrl *ctrl)
{
struct imx274 *priv = (struct imx274 *)tc_dev->priv;
int i;
switch (ctrl->id) {
case TEGRA_CAMERA_CID_FUSE_ID:
for (i = 0; i < IMX274_FUSE_ID_SIZE; i++)
sprintf(&ctrl->p_new.p_char[i*2], "%02x",
priv->fuse_id[i]);
break;
default:
return -EINVAL;
}
ctrl->p_cur.p_char = ctrl->p_new.p_char;
return 0;
}
static struct tegracam_ctrl_ops imx274_ctrl_ops = {
.numctrls = ARRAY_SIZE(ctrl_cid_list),
.ctrl_cid_list = ctrl_cid_list,
.string_ctrl_size = {0, IMX274_FUSE_ID_STR_SIZE},
.set_gain = imx274_set_gain,
.set_exposure = imx274_set_exposure,
.set_exposure_short = imx274_set_exposure_shr_dol_short,
.set_frame_rate = imx274_set_frame_rate,
.set_group_hold = imx274_set_group_hold,
.fill_string_ctrl = imx274_fill_string_ctrl,
};
static int imx274_power_on(struct camera_common_data *s_data)
{
int err = 0;
struct camera_common_power_rail *pw = s_data->power;
struct camera_common_pdata *pdata = s_data->pdata;
struct device *dev = s_data->dev;
dev_dbg(dev, "%s: power on\n", __func__);
if (pdata && pdata->power_on) {
err = pdata->power_on(pw);
if (err)
dev_err(dev, "%s failed.\n", __func__);
else
pw->state = SWITCH_ON;
return err;
}
if (pw->reset_gpio)
gpio_set_value(pw->reset_gpio, 0);
if (pw->af_gpio)
gpio_set_value(pw->af_gpio, 1);
if (pw->pwdn_gpio)
gpio_set_value(pw->pwdn_gpio, 0);
usleep_range(10, 20);
if (pw->dvdd)
err = regulator_enable(pw->dvdd);
if (err)
goto imx274_dvdd_fail;
if (pw->iovdd)
err = regulator_enable(pw->iovdd);
if (err)
goto imx274_iovdd_fail;
if (pw->avdd)
err = regulator_enable(pw->avdd);
if (err)
goto imx274_avdd_fail;
usleep_range(1, 2);
/* Added latency due to AVDD setup time on McCoy */
if (pdata->avdd_latency)
usleep_range(pdata->avdd_latency, pdata->avdd_latency + 10);
if (pw->reset_gpio)
gpio_set_value(pw->reset_gpio, 1);
if (pw->pwdn_gpio)
gpio_set_value(pw->pwdn_gpio, 1);
/* 1.2v input is generated on module board, adds more latency */
usleep_range(10000, 10010);
pw->state = SWITCH_ON;
return 0;
imx274_dvdd_fail:
if (pw->af_gpio)
gpio_set_value(pw->af_gpio, 0);
imx274_iovdd_fail:
if (pw->dvdd)
regulator_disable(pw->dvdd);
imx274_avdd_fail:
if (pw->iovdd)
regulator_disable(pw->iovdd);
dev_err(dev, "%s failed.\n", __func__);
return -ENODEV;
}
static int imx274_power_off(struct camera_common_data *s_data)
{
int err = 0;
struct camera_common_power_rail *pw = s_data->power;
struct camera_common_pdata *pdata = s_data->pdata;
struct device *dev = s_data->dev;
dev_dbg(dev, "%s: power off\n", __func__);
if (pdata && pdata->power_off) {
err = pdata->power_off(pw);
if (err) {
dev_err(dev, "%s failed.\n", __func__);
return err;
}
goto power_off_done;
}
usleep_range(1, 2);
if (pw->reset_gpio)
gpio_set_value(pw->reset_gpio, 0);
if (pw->af_gpio)
gpio_set_value(pw->af_gpio, 0);
if (pw->pwdn_gpio)
gpio_set_value(pw->pwdn_gpio, 0);
usleep_range(1, 2);
if (pw->avdd)
regulator_disable(pw->avdd);
if (pw->iovdd)
regulator_disable(pw->iovdd);
if (pw->dvdd)
regulator_disable(pw->dvdd);
power_off_done:
pw->state = SWITCH_OFF;
return 0;
}
static int imx274_power_put(struct tegracam_device *tc_dev)
{
struct camera_common_data *s_data = tc_dev->s_data;
struct camera_common_power_rail *pw = s_data->power;
if (unlikely(!pw))
return -EFAULT;
if (likely(pw->avdd))
devm_regulator_put(pw->avdd);
if (likely(pw->dvdd))
devm_regulator_put(pw->dvdd);
if (likely(pw->iovdd))
devm_regulator_put(pw->iovdd);
pw->avdd = NULL;
pw->dvdd = NULL;
pw->iovdd = NULL;
gpio_free(pw->pwdn_gpio);
gpio_free(pw->reset_gpio);
gpio_free(pw->af_gpio);
return 0;
}
static int imx274_power_get(struct tegracam_device *tc_dev)
{
struct device *dev = tc_dev->dev;
struct camera_common_data *s_data = tc_dev->s_data;
struct camera_common_power_rail *pw = s_data->power;
struct camera_common_pdata *pdata = s_data->pdata;
const char *mclk_name;
const char *parentclk_name;
struct clk *parent;
int err = 0, ret = 0;
mclk_name = pdata->mclk_name ?
pdata->mclk_name : "cam_mclk1";
pw->mclk = devm_clk_get(dev, mclk_name);
if (IS_ERR(pw->mclk)) {
dev_err(dev, "unable to get clock %s\n", mclk_name);
return PTR_ERR(pw->mclk);
}
parentclk_name = pdata->parentclk_name;
if (parentclk_name) {
parent = devm_clk_get(dev, parentclk_name);
if (IS_ERR(parent)) {
dev_err(dev, "unable to get parent clcok %s",
parentclk_name);
} else
clk_set_parent(pw->mclk, parent);
}
/* ananlog 2.7v */
err |= camera_common_regulator_get(dev,
&pw->avdd, pdata->regulators.avdd);
/* IO 1.8v */
err |= camera_common_regulator_get(dev,
&pw->iovdd, pdata->regulators.iovdd);
/* digital 1.2v, not all imx274 modules draw this from CVB */
if (pdata->regulators.dvdd != NULL)
err |= camera_common_regulator_get(dev,
&pw->dvdd, pdata->regulators.dvdd);
if (!err) {
pw->reset_gpio = pdata->reset_gpio;
pw->af_gpio = pdata->af_gpio;
pw->pwdn_gpio = pdata->pwdn_gpio;
}
ret = gpio_request(pw->reset_gpio, "cam_reset_gpio");
if (ret < 0)
dev_dbg(dev, "%s can't request reset_gpio %d\n", __func__, ret);
gpio_direction_output(pw->reset_gpio, 1);
ret = gpio_request(pw->af_gpio, "cam_af_gpio");
if (ret < 0)
dev_dbg(dev, "%s can't request af_gpio %d\n", __func__, ret);
gpio_direction_output(pw->af_gpio, 1);
ret = gpio_request(pw->pwdn_gpio, "cam_pwdn_gpio");
if (ret < 0)
dev_dbg(dev, "%s can't request pwdn_gpio %d\n", __func__, ret);
gpio_direction_output(pw->pwdn_gpio, 1);
pw->state = SWITCH_OFF;
return err;
}
static
struct camera_common_pdata *imx274_parse_dt(struct tegracam_device *tc_dev)
{
struct device *dev = tc_dev->dev;
struct device_node *node = dev->of_node;
struct camera_common_pdata *board_priv_pdata;
const struct of_device_id *match;
int err;
if (!node)
return NULL;
match = of_match_device(imx274_of_match, dev);
if (!match) {
dev_err(dev, "Failed to find matching dt id\n");
return NULL;
}
board_priv_pdata = devm_kzalloc(dev,
sizeof(*board_priv_pdata), GFP_KERNEL);
if (!board_priv_pdata)
return NULL;
err = of_property_read_string(node, "mclk",
&board_priv_pdata->mclk_name);
if (err)
dev_err(dev, "mclk not in DT\n");
board_priv_pdata->reset_gpio = of_get_named_gpio(node,
"reset-gpios", 0);
of_property_read_string(node, "avdd-reg",
&board_priv_pdata->regulators.avdd);
of_property_read_string(node, "dvdd-reg",
&board_priv_pdata->regulators.dvdd);
of_property_read_string(node, "iovdd-reg",
&board_priv_pdata->regulators.iovdd);
board_priv_pdata->has_eeprom =
of_property_read_bool(node, "has-eeprom");
of_property_read_u32(node, "fuse_id_start_addr",
&board_priv_pdata->fuse_id_addr);
of_property_read_u32(node, "avdd-setup-delay",
&board_priv_pdata->avdd_latency);
return board_priv_pdata;
}
static int imx274_set_mode(struct tegracam_device *tc_dev)
{
struct imx274 *priv = (struct imx274 *)tegracam_get_privdata(tc_dev);
struct camera_common_data *s_data = tc_dev->s_data;
struct device *dev = s_data->dev;
int err;
err = imx274_write_table(priv, mode_table[s_data->mode]);
if (err)
return err;
if (test_mode) {
err = imx274_write_table(priv,
mode_table[IMX274_MODE_TEST_PATTERN]);
if (err)
goto exit;
}
return 0;
exit:
dev_err(dev, "%s: error setting mode\n", __func__);
return err;
}
static int imx274_start_streaming(struct tegracam_device *tc_dev)
{
struct imx274 *priv = (struct imx274 *)tegracam_get_privdata(tc_dev);
struct camera_common_data *s_data = tc_dev->s_data;
struct device *dev = s_data->dev;
int err;
mutex_lock(&priv->streaming_lock);
err = imx274_write_table(priv, mode_table[IMX274_MODE_START_STREAM]);
if (err) {
mutex_unlock(&priv->streaming_lock);
goto exit;
} else {
priv->streaming = true;
mutex_unlock(&priv->streaming_lock);
}
return 0;
exit:
dev_err(dev, "%s: error starting stream\n", __func__);
return err;
}
static int imx274_stop_streaming(struct tegracam_device *tc_dev)
{
struct imx274 *priv = (struct imx274 *)tegracam_get_privdata(tc_dev);
struct camera_common_data *s_data = tc_dev->s_data;
struct device *dev = s_data->dev;
int err;
mutex_lock(&priv->streaming_lock);
err = imx274_write_table(priv, mode_table[IMX274_MODE_STOP_STREAM]);
if (err) {
mutex_unlock(&priv->streaming_lock);
goto exit;
} else {
priv->streaming = false;
mutex_unlock(&priv->streaming_lock);
}
return 0;
exit:
dev_err(dev, "%s: error stopping stream\n", __func__);
return err;
}
static struct camera_common_sensor_ops imx274_common_ops = {
.numfrmfmts = ARRAY_SIZE(imx274_frmfmt),
.frmfmt_table = imx274_frmfmt,
.power_on = imx274_power_on,
.power_off = imx274_power_off,
.write_reg = imx274_write_reg,
.read_reg = imx274_read_reg,
.parse_dt = imx274_parse_dt,
.power_get = imx274_power_get,
.power_put = imx274_power_put,
.set_mode = imx274_set_mode,
.start_streaming = imx274_start_streaming,
.stop_streaming = imx274_stop_streaming,
};
static int imx274_eeprom_device_release(struct imx274 *priv)
{
int i;
for (i = 0; i < IMX274_EEPROM_NUM_BLOCKS; i++) {
if (priv->eeprom[i].i2c_client != NULL) {
i2c_unregister_device(priv->eeprom[i].i2c_client);
priv->eeprom[i].i2c_client = NULL;
}
}
return 0;
}
static int imx274_eeprom_device_init(struct imx274 *priv)
{
char *dev_name = "eeprom_imx274";
struct camera_common_pdata *pdata = priv->s_data->pdata;
static struct regmap_config eeprom_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
int i;
int err;
if (!pdata || !pdata->has_eeprom)
return -EINVAL;
for (i = 0; i < IMX274_EEPROM_NUM_BLOCKS; i++) {
priv->eeprom[i].adap = i2c_get_adapter(
priv->i2c_client->adapter->nr);
memset(&priv->eeprom[i].brd, 0, sizeof(priv->eeprom[i].brd));
strncpy(priv->eeprom[i].brd.type, dev_name,
sizeof(priv->eeprom[i].brd.type));
priv->eeprom[i].brd.addr = IMX274_EEPROM_ADDRESS + i;
priv->eeprom[i].i2c_client = i2c_new_device(
priv->eeprom[i].adap, &priv->eeprom[i].brd);
priv->eeprom[i].regmap = devm_regmap_init_i2c(
priv->eeprom[i].i2c_client, &eeprom_regmap_config);
if (IS_ERR(priv->eeprom[i].regmap)) {
err = PTR_ERR(priv->eeprom[i].regmap);
imx274_eeprom_device_release(priv);
return err;
}
}
return 0;
}
static int imx274_read_fuse_id(struct imx274 *priv)
{
struct camera_common_pdata *pdata = priv->s_data->pdata;
int err, i;
if (!pdata->has_eeprom)
return -EINVAL;
for (i = 0; i < IMX274_EEPROM_NUM_BLOCKS; i++) {
err = regmap_bulk_read(priv->eeprom[i].regmap, 0,
&priv->eeprom_buf[i * IMX274_EEPROM_BLOCK_SIZE],
IMX274_EEPROM_BLOCK_SIZE);
if (err)
return err;
}
for (i = 0; i < IMX274_FUSE_ID_SIZE; i++)
priv->fuse_id[i] =
priv->eeprom_buf[i + pdata->fuse_id_addr];
return 0;
}
static int imx274_board_setup(struct imx274 *priv)
{
struct camera_common_data *s_data = priv->s_data;
struct device *dev = s_data->dev;
int err = 0;
if (!s_data->pdata->has_eeprom)
return 0;
/* eeprom for fuse id*/
err = imx274_eeprom_device_init(priv);
if (err && s_data->pdata->has_eeprom) {
dev_err(dev,
"Failed to allocate eeprom reg map: %d\n", err);
return err;
}
err = camera_common_mclk_enable(s_data);
if (err) {
dev_err(dev,
"Error %d turning on mclk\n", err);
return err;
}
err = imx274_power_on(s_data);
if (err) {
dev_err(dev,
"Error %d during power on sensor\n", err);
return err;
}
err = imx274_read_fuse_id(priv);
if (err) {
dev_err(dev,
"Error %d reading fuse id data\n", err);
goto error;
}
error:
imx274_power_off(s_data);
camera_common_mclk_disable(s_data);
return err;
}
static int imx274_debugfs_streaming_show(void *data, u64 *val)
{
struct imx274 *priv = data;
mutex_lock(&priv->streaming_lock);
*val = priv->streaming;
mutex_unlock(&priv->streaming_lock);
return 0;
}
static int imx274_debugfs_streaming_write(void *data, u64 val)
{
int err = 0;
struct imx274 *priv = data;
struct i2c_client *client = priv->i2c_client;
bool enable = (val != 0);
int mode_index = enable ?
(IMX274_MODE_START_STREAM) : (IMX274_MODE_STOP_STREAM);
dev_info(&client->dev, "%s: %s sensor\n",
__func__, (enable ? "enabling" : "disabling"));
mutex_lock(&priv->streaming_lock);
err = imx274_write_table(priv, mode_table[mode_index]);
if (err) {
dev_err(&client->dev, "%s: error setting sensor streaming\n",
__func__);
goto done;
}
priv->streaming = enable;
done:
mutex_unlock(&priv->streaming_lock);
return err;
}
DEFINE_SIMPLE_ATTRIBUTE(imx274_debugfs_streaming_fops,
imx274_debugfs_streaming_show,
imx274_debugfs_streaming_write,
"%lld\n");
static void imx274_debugfs_remove(struct imx274 *priv);
static int imx274_debugfs_create(struct imx274 *priv)
{
int err = 0;
struct i2c_client *client = priv->i2c_client;
const char *devnode;
char debugfs_dir[16];
err = of_property_read_string(client->dev.of_node, "devnode", &devnode);
if (err) {
dev_err(&client->dev, "devnode not in DT\n");
return err;
}
snprintf(debugfs_dir, sizeof(debugfs_dir), "camera-%s", devnode);
priv->debugfs_dir = debugfs_create_dir(debugfs_dir, NULL);
if (priv->debugfs_dir == NULL)
return -ENOMEM;
if (!debugfs_create_file("streaming", 0644, priv->debugfs_dir, priv,
&imx274_debugfs_streaming_fops))
goto error;
return 0;
error:
imx274_debugfs_remove(priv);
return -ENOMEM;
}
static void imx274_debugfs_remove(struct imx274 *priv)
{
debugfs_remove_recursive(priv->debugfs_dir);
priv->debugfs_dir = NULL;
}
static int imx274_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
dev_dbg(&client->dev, "%s:\n", __func__);
return 0;
}
static const struct v4l2_subdev_internal_ops imx274_subdev_internal_ops = {
.open = imx274_open,
};
static int imx274_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device_node *node = client->dev.of_node;
struct tegracam_device *tc_dev;
struct imx274 *priv;
int err;
dev_info(dev, "probing v4l2 sensor.\n");
if (!IS_ENABLED(CONFIG_OF) || !node)
return -EINVAL;
priv = devm_kzalloc(dev,
sizeof(struct imx274), GFP_KERNEL);
if (!priv)
return -ENOMEM;
tc_dev = devm_kzalloc(dev,
sizeof(struct tegracam_device), GFP_KERNEL);
if (!tc_dev)
return -ENOMEM;
priv->i2c_client = tc_dev->client = client;
tc_dev->dev = dev;
strncpy(tc_dev->name, "imx274", sizeof(tc_dev->name));
tc_dev->dev_regmap_config = &sensor_regmap_config;
tc_dev->sensor_ops = &imx274_common_ops;
tc_dev->v4l2sd_internal_ops = &imx274_subdev_internal_ops;
tc_dev->tcctrl_ops = &imx274_ctrl_ops;
mutex_init(&priv->streaming_lock);
err = tegracam_device_register(tc_dev);
if (err) {
dev_err(dev, "tegra camera driver registration failed\n");
return err;
}
priv->tc_dev = tc_dev;
priv->s_data = tc_dev->s_data;
priv->subdev = &tc_dev->s_data->subdev;
tegracam_set_privdata(tc_dev, (void *)priv);
err = imx274_board_setup(priv);
if (err) {
tegracam_device_unregister(tc_dev);
dev_err(dev, "board setup failed\n");
return err;
}
err = tegracam_v4l2subdev_register(tc_dev, true);
if (err) {
dev_err(dev, "tegra camera subdev registration failed\n");
return err;
}
err = imx274_debugfs_create(priv);
if (err) {
dev_err(&client->dev, "error creating debugfs interface");
imx274_debugfs_remove(priv);
return err;
}
dev_info(dev, "Detected IMX274 sensor\n");
return 0;
}
static int imx274_remove(struct i2c_client *client)
{
struct camera_common_data *s_data = to_camera_common_data(&client->dev);
struct imx274 *priv = (struct imx274 *)s_data->priv;
imx274_debugfs_remove(priv);
tegracam_v4l2subdev_unregister(priv->tc_dev);
tegracam_device_unregister(priv->tc_dev);
imx274_eeprom_device_release(priv);
mutex_destroy(&priv->streaming_lock);
return 0;
}
static const struct i2c_device_id imx274_id[] = {
{ "imx274", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, imx274_id);
static struct i2c_driver imx274_i2c_driver = {
.driver = {
.name = "imx274",
.owner = THIS_MODULE,
},
.probe = imx274_probe,
.remove = imx274_remove,
.id_table = imx274_id,
};
module_i2c_driver(imx274_i2c_driver);
MODULE_DESCRIPTION("Media Controller driver for Sony IMX274");
MODULE_AUTHOR("Josh Kuo <joshk@nvidia.com>");
MODULE_LICENSE("GPL v2");
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