/*
* imx390.c - imx390 sensor driver
*
* Copyright (c) 2018-2020, 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 .
*/
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "imx390_mode_tbls.h"
#define IMX390_MIN_GAIN (0)
#define IMX390_MAX_GAIN (30)
#define IMX390_MAX_GAIN_REG ((IMX390_MAX_GAIN - IMX390_MIN_GAIN) * 10 / 3)
#define IMX390_DEFAULT_FRAME_LENGTH (1125)
#define IMX390_FRAME_LENGTH_ADDR_MSB 0x200A
#define IMX390_FRAME_LENGTH_ADDR_MID 0x2009
#define IMX390_FRAME_LENGTH_ADDR_LSB 0x2008
#define IMX390_COARSE_TIME_SHS1_ADDR_MSB 0x000E
#define IMX390_COARSE_TIME_SHS1_ADDR_MID 0x000D
#define IMX390_COARSE_TIME_SHS1_ADDR_LSB 0x000C
#define IMX390_COARSE_TIME_SHS2_ADDR_MSB 0x0012
#define IMX390_COARSE_TIME_SHS2_ADDR_MID 0x0011
#define IMX390_COARSE_TIME_SHS2_ADDR_LSB 0x0010
#define IMX390_GROUP_HOLD_ADDR 0x0008
#define IMX390_ANALOG_GAIN_SP1H_ADDR 0x0018
#define IMX390_ANALOG_GAIN_SP1L_ADDR 0x001A
const struct of_device_id imx390_of_match[] = {
{ .compatible = "nvidia,imx390",},
{ },
};
MODULE_DEVICE_TABLE(of, imx390_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,
};
struct imx390 {
struct i2c_client *i2c_client;
const struct i2c_device_id *id;
struct v4l2_subdev *subdev;
struct device *ser_dev;
struct device *dser_dev;
struct gmsl_link_ctx g_ctx;
u32 frame_length;
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 imx390_get_frame_length_regs(imx390_reg *regs,
u32 frame_length)
{
regs->addr = IMX390_FRAME_LENGTH_ADDR_MSB;
regs->val = (frame_length >> 16) & 0x01;
(regs + 1)->addr = IMX390_FRAME_LENGTH_ADDR_MID;
(regs + 1)->val = (frame_length >> 8) & 0xff;
(regs + 2)->addr = IMX390_FRAME_LENGTH_ADDR_LSB;
(regs + 2)->val = (frame_length) & 0xff;
}
static inline void imx390_get_coarse_time_regs_shs1(imx390_reg *regs,
u32 coarse_time)
{
regs->addr = IMX390_COARSE_TIME_SHS1_ADDR_MSB;
regs->val = (coarse_time >> 16) & 0x0f;
(regs + 1)->addr = IMX390_COARSE_TIME_SHS1_ADDR_MID;
(regs + 1)->val = (coarse_time >> 8) & 0xff;
(regs + 2)->addr = IMX390_COARSE_TIME_SHS1_ADDR_LSB;
(regs + 2)->val = (coarse_time) & 0xff;
}
static inline void imx390_get_coarse_time_regs_shs2(imx390_reg *regs,
u32 coarse_time)
{
regs->addr = IMX390_COARSE_TIME_SHS2_ADDR_MSB;
regs->val = (coarse_time >> 16) & 0x0f;
(regs + 1)->addr = IMX390_COARSE_TIME_SHS2_ADDR_MID;
(regs + 1)->val = (coarse_time >> 8) & 0xff;
(regs + 2)->addr = IMX390_COARSE_TIME_SHS2_ADDR_LSB;
(regs + 2)->val = (coarse_time) & 0xff;
}
static inline void imx390_get_gain_reg(imx390_reg *regs,
u16 gain)
{
regs->addr = IMX390_ANALOG_GAIN_SP1H_ADDR;
regs->val = (gain) & 0xff;
(regs + 1)->addr = IMX390_ANALOG_GAIN_SP1H_ADDR + 1;
(regs + 1)->val = (gain >> 8) & 0xff;
(regs + 2)->addr = IMX390_ANALOG_GAIN_SP1L_ADDR;
(regs + 2)->val = (gain) & 0xff;
(regs + 3)->addr = IMX390_ANALOG_GAIN_SP1L_ADDR + 1;
(regs + 3)->val = (gain >> 8) & 0xff;
}
static int test_mode;
module_param(test_mode, int, 0644);
static inline int imx390_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, ®_val);
*val = reg_val & 0xFF;
return err;
}
static int imx390_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, 0x%x = %x\n",
__func__, addr, val);
return err;
}
static int imx390_write_table(struct imx390 *priv,
const imx390_reg table[])
{
struct camera_common_data *s_data = priv->s_data;
return regmap_util_write_table_8(s_data->regmap,
table,
NULL, 0,
IMX390_TABLE_WAIT_MS,
IMX390_TABLE_END);
}
static struct mutex serdes_lock__;
static int imx390_gmsl_serdes_setup(struct imx390 *priv)
{
int err = 0;
int des_err = 0;
struct device *dev;
if (!priv || !priv->ser_dev || !priv->dser_dev || !priv->i2c_client)
return -EINVAL;
dev = &priv->i2c_client->dev;
mutex_lock(&serdes_lock__);
/* For now no separate power on required for serializer device */
max9296_power_on(priv->dser_dev);
/* setup serdes addressing and control pipeline */
err = max9296_setup_link(priv->dser_dev, &priv->i2c_client->dev);
if (err) {
dev_err(dev, "gmsl deserializer link config failed\n");
goto error;
}
err = max9295_setup_control(priv->ser_dev);
/* proceed even if ser setup failed, to setup deser correctly */
if (err)
dev_err(dev, "gmsl serializer setup failed\n");
des_err = max9296_setup_control(priv->dser_dev, &priv->i2c_client->dev);
if (des_err) {
dev_err(dev, "gmsl deserializer setup failed\n");
/* overwrite err only if deser setup also failed */
err = des_err;
}
error:
mutex_unlock(&serdes_lock__);
return err;
}
static void imx390_gmsl_serdes_reset(struct imx390 *priv)
{
mutex_lock(&serdes_lock__);
/* reset serdes addressing and control pipeline */
max9295_reset_control(priv->ser_dev);
max9296_reset_control(priv->dser_dev, &priv->i2c_client->dev);
max9296_power_off(priv->dser_dev);
mutex_unlock(&serdes_lock__);
}
static int imx390_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;
}
pw->state = SWITCH_ON;
return 0;
}
static int imx390_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:\n", __func__);
if (pdata && pdata->power_off) {
err = pdata->power_off(pw);
if (!err)
goto power_off_done;
else
dev_err(dev, "%s failed.\n", __func__);
return err;
}
power_off_done:
pw->state = SWITCH_OFF;
return 0;
}
static int imx390_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;
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);
}
pw->state = SWITCH_OFF;
return err;
}
static int imx390_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;
return 0;
}
static int imx390_set_group_hold(struct tegracam_device *tc_dev, bool val)
{
struct camera_common_data *s_data = tc_dev->s_data;
struct device *dev = tc_dev->dev;
int err;
err = imx390_write_reg(s_data,
IMX390_GROUP_HOLD_ADDR, val);
if (err) {
dev_dbg(dev,
"%s: Group hold control error\n", __func__);
return err;
}
return 0;
}
static int imx390_set_gain(struct tegracam_device *tc_dev, s64 val)
{
struct camera_common_data *s_data = tc_dev->s_data;
struct device *dev = tc_dev->dev;
const struct sensor_mode_properties *mode =
&s_data->sensor_props.sensor_modes[s_data->mode_prop_idx];
imx390_reg reg_list[4];
int err, i;
u16 gain;
gain = (u16)(val / mode->control_properties.step_gain_val);
dev_dbg(dev, "%s: db: %d\n", __func__, gain);
if (gain > IMX390_MAX_GAIN_REG)
gain = IMX390_MAX_GAIN_REG;
imx390_get_gain_reg(reg_list, gain);
for (i = 0; i < 4; i++) {
err = imx390_write_reg(s_data, reg_list[i].addr,
reg_list[i].val);
if (err)
goto fail;
}
return 0;
fail:
dev_info(dev, "%s: GAIN control error\n", __func__);
return err;
}
static int imx390_set_frame_rate(struct tegracam_device *tc_dev, s64 val)
{
struct imx390 *priv = (struct imx390 *)tegracam_get_privdata(tc_dev);
/* fixed 30fps */
priv->frame_length = IMX390_DEFAULT_FRAME_LENGTH;
return 0;
}
static int imx390_set_exposure(struct tegracam_device *tc_dev, s64 val)
{
struct imx390 *priv = (struct imx390 *)tegracam_get_privdata(tc_dev);
struct camera_common_data *s_data = tc_dev->s_data;
const struct sensor_mode_properties *mode =
&s_data->sensor_props.sensor_modes[s_data->mode];
imx390_reg reg_list[3];
int err;
u32 coarse_time;
u32 shs1;
int i = 0;
if (priv->frame_length == 0)
priv->frame_length = IMX390_DEFAULT_FRAME_LENGTH;
/* coarse time in lines */
coarse_time = (u32) (val * s_data->frmfmt[s_data->mode].framerates[0] *
priv->frame_length / mode->control_properties.exposure_factor);
shs1 = priv->frame_length - coarse_time;
/* 0 and 1 are prohibited */
if (shs1 < 2)
shs1 = 2;
imx390_get_coarse_time_regs_shs1(reg_list, shs1);
for (i = 0; i < 3; i++) {
err = imx390_write_reg(priv->s_data, reg_list[i].addr,
reg_list[i].val);
if (err)
goto fail;
}
imx390_get_coarse_time_regs_shs2(reg_list, shs1);
for (i = 0; i < 3; i++) {
err = imx390_write_reg(priv->s_data, reg_list[i].addr,
reg_list[i].val);
if (err)
goto fail;
}
return 0;
fail:
dev_dbg(&priv->i2c_client->dev,
"%s: set coarse time error\n", __func__);
return err;
}
static struct tegracam_ctrl_ops imx390_ctrl_ops = {
.numctrls = ARRAY_SIZE(ctrl_cid_list),
.ctrl_cid_list = ctrl_cid_list,
.set_gain = imx390_set_gain,
.set_exposure = imx390_set_exposure,
.set_exposure_short = imx390_set_exposure,
.set_frame_rate = imx390_set_frame_rate,
.set_group_hold = imx390_set_group_hold,
};
static struct camera_common_pdata *imx390_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(imx390_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);
err = of_property_read_string(node, "mclk",
&board_priv_pdata->mclk_name);
if (err)
dev_err(dev, "mclk not in DT\n");
return board_priv_pdata;
}
static int imx390_set_mode(struct tegracam_device *tc_dev)
{
struct imx390 *priv = (struct imx390 *)tegracam_get_privdata(tc_dev);
struct camera_common_data *s_data = tc_dev->s_data;
struct device *dev = tc_dev->dev;
const struct of_device_id *match;
int err;
match = of_match_device(imx390_of_match, dev);
if (!match) {
dev_err(dev, "Failed to find matching dt id\n");
return -EINVAL;
}
err = imx390_write_table(priv, mode_table[s_data->mode_prop_idx]);
if (err)
return err;
return 0;
}
static int imx390_start_streaming(struct tegracam_device *tc_dev)
{
struct imx390 *priv = (struct imx390 *)tegracam_get_privdata(tc_dev);
struct device *dev = tc_dev->dev;
int err;
/* enable serdes streaming */
err = max9295_setup_streaming(priv->ser_dev);
if (err)
goto exit;
err = max9296_setup_streaming(priv->dser_dev, dev);
if (err)
goto exit;
err = max9296_start_streaming(priv->dser_dev, dev);
if (err)
goto exit;
err = imx390_write_table(priv,
mode_table[IMX390_MODE_START_STREAM]);
if (err)
return err;
msleep(20);
return 0;
exit:
dev_err(dev, "%s: error setting stream\n", __func__);
return err;
}
static int imx390_stop_streaming(struct tegracam_device *tc_dev)
{
struct device *dev = tc_dev->dev;
struct imx390 *priv = (struct imx390 *)tegracam_get_privdata(tc_dev);
int err;
/* disable serdes streaming */
max9296_stop_streaming(priv->dser_dev, dev);
err = imx390_write_table(priv, mode_table[IMX390_MODE_STOP_STREAM]);
if (err)
return err;
return 0;
}
static struct camera_common_sensor_ops imx390_common_ops = {
.numfrmfmts = ARRAY_SIZE(imx390_frmfmt),
.frmfmt_table = imx390_frmfmt,
.power_on = imx390_power_on,
.power_off = imx390_power_off,
.write_reg = imx390_write_reg,
.read_reg = imx390_read_reg,
.parse_dt = imx390_parse_dt,
.power_get = imx390_power_get,
.power_put = imx390_power_put,
.set_mode = imx390_set_mode,
.start_streaming = imx390_start_streaming,
.stop_streaming = imx390_stop_streaming,
};
static int imx390_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 imx390_subdev_internal_ops = {
.open = imx390_open,
};
static int imx390_board_setup(struct imx390 *priv)
{
struct tegracam_device *tc_dev = priv->tc_dev;
struct device *dev = tc_dev->dev;
struct device_node *node = dev->of_node;
struct device_node *ser_node;
struct i2c_client *ser_i2c = NULL;
struct device_node *dser_node;
struct i2c_client *dser_i2c = NULL;
struct device_node *gmsl;
int value = 0xFFFF;
const char *str_value;
const char *str_value1[2];
int i;
int err;
err = of_property_read_u32(node, "reg", &priv->g_ctx.sdev_reg);
if (err < 0) {
dev_err(dev, "reg not found\n");
goto error;
}
err = of_property_read_u32(node, "def-addr",
&priv->g_ctx.sdev_def);
if (err < 0) {
dev_err(dev, "def-addr not found\n");
goto error;
}
ser_node = of_parse_phandle(node, "nvidia,gmsl-ser-device", 0);
if (ser_node == NULL) {
dev_err(dev,
"missing %s handle\n",
"nvidia,gmsl-ser-device");
goto error;
}
err = of_property_read_u32(ser_node, "reg", &priv->g_ctx.ser_reg);
if (err < 0) {
dev_err(dev, "serializer reg not found\n");
goto error;
}
ser_i2c = of_find_i2c_device_by_node(ser_node);
of_node_put(ser_node);
if (ser_i2c == NULL) {
dev_err(dev, "missing serializer dev handle\n");
goto error;
}
if (ser_i2c->dev.driver == NULL) {
dev_err(dev, "missing serializer driver\n");
goto error;
}
priv->ser_dev = &ser_i2c->dev;
dser_node = of_parse_phandle(node, "nvidia,gmsl-dser-device", 0);
if (dser_node == NULL) {
dev_err(dev,
"missing %s handle\n",
"nvidia,gmsl-dser-device");
goto error;
}
dser_i2c = of_find_i2c_device_by_node(dser_node);
of_node_put(dser_node);
if (dser_i2c == NULL) {
dev_err(dev, "missing deserializer dev handle\n");
goto error;
}
if (dser_i2c->dev.driver == NULL) {
dev_err(dev, "missing deserializer driver\n");
goto error;
}
priv->dser_dev = &dser_i2c->dev;
/* populate g_ctx from DT */
gmsl = of_get_child_by_name(node, "gmsl-link");
if (gmsl == NULL) {
dev_err(dev, "missing gmsl-link device node\n");
err = -EINVAL;
goto error;
}
err = of_property_read_string(gmsl, "dst-csi-port", &str_value);
if (err < 0) {
dev_err(dev, "No dst-csi-port found\n");
goto error;
}
priv->g_ctx.dst_csi_port =
(!strcmp(str_value, "a")) ? GMSL_CSI_PORT_A : GMSL_CSI_PORT_B;
err = of_property_read_string(gmsl, "src-csi-port", &str_value);
if (err < 0) {
dev_err(dev, "No src-csi-port found\n");
goto error;
}
priv->g_ctx.src_csi_port =
(!strcmp(str_value, "a")) ? GMSL_CSI_PORT_A : GMSL_CSI_PORT_B;
err = of_property_read_string(gmsl, "csi-mode", &str_value);
if (err < 0) {
dev_err(dev, "No csi-mode found\n");
goto error;
}
if (!strcmp(str_value, "1x4")) {
priv->g_ctx.csi_mode = GMSL_CSI_1X4_MODE;
} else if (!strcmp(str_value, "2x4")) {
priv->g_ctx.csi_mode = GMSL_CSI_2X4_MODE;
} else if (!strcmp(str_value, "4x2")) {
priv->g_ctx.csi_mode = GMSL_CSI_4X2_MODE;
} else if (!strcmp(str_value, "2x2")) {
priv->g_ctx.csi_mode = GMSL_CSI_2X2_MODE;
} else {
dev_err(dev, "invalid csi mode\n");
goto error;
}
err = of_property_read_string(gmsl, "serdes-csi-link", &str_value);
if (err < 0) {
dev_err(dev, "No serdes-csi-link found\n");
goto error;
}
priv->g_ctx.serdes_csi_link =
(!strcmp(str_value, "a")) ?
GMSL_SERDES_CSI_LINK_A : GMSL_SERDES_CSI_LINK_B;
err = of_property_read_u32(gmsl, "st-vc", &value);
if (err < 0) {
dev_err(dev, "No st-vc info\n");
goto error;
}
priv->g_ctx.st_vc = value;
err = of_property_read_u32(gmsl, "vc-id", &value);
if (err < 0) {
dev_err(dev, "No vc-id info\n");
goto error;
}
priv->g_ctx.dst_vc = value;
err = of_property_read_u32(gmsl, "num-lanes", &value);
if (err < 0) {
dev_err(dev, "No num-lanes info\n");
goto error;
}
priv->g_ctx.num_csi_lanes = value;
priv->g_ctx.num_streams =
of_property_count_strings(gmsl, "streams");
if (priv->g_ctx.num_streams <= 0) {
dev_err(dev, "No streams found\n");
err = -EINVAL;
goto error;
}
for (i = 0; i < priv->g_ctx.num_streams; i++) {
of_property_read_string_index(gmsl, "streams", i,
&str_value1[i]);
if (!str_value1[i]) {
dev_err(dev, "invalid stream info\n");
goto error;
}
if (!strcmp(str_value1[i], "raw12")) {
priv->g_ctx.streams[i].st_data_type =
GMSL_CSI_DT_RAW_12;
} else if (!strcmp(str_value1[i], "embed")) {
priv->g_ctx.streams[i].st_data_type =
GMSL_CSI_DT_EMBED;
} else if (!strcmp(str_value1[i], "ued-u1")) {
priv->g_ctx.streams[i].st_data_type =
GMSL_CSI_DT_UED_U1;
} else {
dev_err(dev, "invalid stream data type\n");
goto error;
}
}
priv->g_ctx.s_dev = dev;
return 0;
error:
dev_err(dev, "board setup failed\n");
return err;
}
static int imx390_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct device *dev = &client->dev;
struct device_node *node = dev->of_node;
struct tegracam_device *tc_dev;
struct imx390 *priv;
int err;
dev_info(dev, "probing v4l2 sensor.\n");
if (!IS_ENABLED(CONFIG_OF) || !node)
return -EINVAL;
priv = devm_kzalloc(dev, sizeof(struct imx390), GFP_KERNEL);
if (!priv) {
dev_err(dev, "unable to allocate memory!\n");
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, "imx390", sizeof(tc_dev->name));
tc_dev->dev_regmap_config = &sensor_regmap_config;
tc_dev->sensor_ops = &imx390_common_ops;
tc_dev->v4l2sd_internal_ops = &imx390_subdev_internal_ops;
tc_dev->tcctrl_ops = &imx390_ctrl_ops;
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 = imx390_board_setup(priv);
if (err) {
tegracam_device_unregister(tc_dev);
dev_err(dev, "board setup failed\n");
return err;
}
/* Pair sensor to serializer dev */
err = max9295_sdev_pair(priv->ser_dev, &priv->g_ctx);
if (err) {
dev_err(&client->dev, "gmsl ser pairing failed\n");
return err;
}
/* Register sensor to deserializer dev */
err = max9296_sdev_register(priv->dser_dev, &priv->g_ctx);
if (err) {
dev_err(&client->dev, "gmsl deserializer register failed\n");
return err;
}
/*
* gmsl serdes setup
*
* Sensor power on/off should be the right place for serdes
* setup/reset. But the problem is, the total required delay
* in serdes setup/reset exceeds the frame wait timeout, looks to
* be related to multiple channel open and close sequence
* issue (#BUG 200477330).
* Once this bug is fixed, these may be moved to power on/off.
* The delays in serdes is as per guidelines and can't be reduced,
* so it is placed in probe/remove, though for that, deserializer
* would be powered on always post boot, until 1.2v is supplied
* to deserializer from CVB.
*/
err = imx390_gmsl_serdes_setup(priv);
if (err) {
dev_err(&client->dev,
"%s gmsl serdes setup failed\n", __func__);
return err;
}
err = tegracam_v4l2subdev_register(tc_dev, true);
if (err) {
dev_err(dev, "tegra camera subdev registration failed\n");
return err;
}
dev_info(&client->dev, "Detected IMX390 sensor\n");
return 0;
}
static int imx390_remove(struct i2c_client *client)
{
struct camera_common_data *s_data = to_camera_common_data(&client->dev);
struct imx390 *priv = (struct imx390 *)s_data->priv;
imx390_gmsl_serdes_reset(priv);
tegracam_v4l2subdev_unregister(priv->tc_dev);
tegracam_device_unregister(priv->tc_dev);
return 0;
}
static const struct i2c_device_id imx390_id[] = {
{ "imx390", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, imx390_id);
static struct i2c_driver imx390_i2c_driver = {
.driver = {
.name = "imx390",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(imx390_of_match),
},
.probe = imx390_probe,
.remove = imx390_remove,
.id_table = imx390_id,
};
static int __init imx390_init(void)
{
mutex_init(&serdes_lock__);
return i2c_add_driver(&imx390_i2c_driver);
}
static void __exit imx390_exit(void)
{
mutex_destroy(&serdes_lock__);
i2c_del_driver(&imx390_i2c_driver);
}
module_init(imx390_init);
module_exit(imx390_exit);
MODULE_DESCRIPTION("Media Controller driver for Sony IMX390");
MODULE_AUTHOR("NVIDIA Corporation");
MODULE_AUTHOR("Sudhir Vyas