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tegrakernel/kernel/nvidia/drivers/media/i2c/ov10823.c

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/*
* ov10823.c - ov10823 sensor driver
*
* Copyright (c) 2016-2018, 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/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/tegra-v4l2-camera.h>
#include <media/camera_common.h>
#include <media/ov10823.h>
#include "ov10823_mode_tbls.h"
#define OV10823_SC_CHIP_ID_HIGH_ADDR 0x300A
#define OV10823_SC_CHIP_ID_LOW_ADDR 0x300B
#define OV10823_SC_SCCB_ID_ADDR 0x300C
#define OV10823_MAX_COARSE_DIFF 8
#define OV10823_GAIN_SHIFT 8
#define OV10823_MIN_GAIN (1 << OV10823_GAIN_SHIFT)
#define OV10823_MAX_GAIN \
((15 << OV10823_GAIN_SHIFT) | (1 << (OV10823_GAIN_SHIFT - 1)))
#define OV10823_MIN_FRAME_LENGTH (0x04F0)
#define OV10823_MAX_FRAME_LENGTH (0x7FFF)
#define OV10823_MIN_EXPOSURE_COARSE (0x8)
#define OV10823_MAX_EXPOSURE_COARSE \
(OV10823_MAX_FRAME_LENGTH-OV10823_MAX_COARSE_DIFF)
#define OV10823_DEFAULT_GAIN OV10823_MIN_GAIN
#define OV10823_DEFAULT_FRAME_LENGTH OV10823_MIN_FRAME_LENGTH
#define OV10823_DEFAULT_EXPOSURE_COARSE \
(OV10823_DEFAULT_FRAME_LENGTH-OV10823_MAX_COARSE_DIFF)
#define OV10823_DEFAULT_MODE OV10823_MODE_2168X1220_60FPS
#define OV10823_DEFAULT_WIDTH 2168
#define OV10823_DEFAULT_HEIGHT 1220
#define OV10823_MAX_WIDTH 4336
#define OV10823_MAX_HEIGHT 2440
#define OV10823_DEFAULT_DATAFMT MEDIA_BUS_FMT_SBGGR10_1X10
#define OV10823_DEFAULT_CLK_FREQ 26000000
#define OV10823_DEFAULT_I2C_ADDRESS_20 (0x20 >> 1)
#define OV10823_DEFAULT_I2C_ADDRESS_6C (0x6C >> 1)
struct ov10823 {
struct camera_common_power_rail power;
int num_ctrls;
int fsync;
int cam_sid_gpio;
int mcu_boot_gpio;
int mcu_reset_gpio;
bool mirror;
bool flip;
struct v4l2_ctrl_handler ctrl_handler;
struct i2c_client *i2c_client;
struct v4l2_subdev *subdev;
struct media_pad pad;
s32 group_hold_prev;
bool group_hold_en;
struct regmap *regmap;
struct camera_common_data *s_data;
struct camera_common_pdata *pdata;
struct v4l2_ctrl *ctrls[];
};
static const struct regmap_config sensor_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
.cache_type = REGCACHE_RBTREE,
};
static u16 ov10823_to_gain(u32 rep, int shift)
{
u16 gain;
int gain_int;
int gain_dec;
int min_int = (1 << shift);
if (rep < OV10823_MIN_GAIN)
rep = OV10823_MIN_GAIN;
else if (rep > OV10823_MAX_GAIN)
rep = OV10823_MAX_GAIN;
/* shift indicates number of least significant bits */
/* used for decimal representation of gain */
gain_int = (int)(rep >> shift);
gain_dec = (int)(rep & ~(0xffff << shift));
/* derived from formulat gain = (x * 16 + 0.5) */
gain = ((gain_int * min_int + gain_dec) * 32 + min_int) / (2 * min_int);
return gain;
}
static int ov10823_g_volatile_ctrl(struct v4l2_ctrl *ctrl);
static int ov10823_s_ctrl(struct v4l2_ctrl *ctrl);
static const struct v4l2_ctrl_ops ov10823_ctrl_ops = {
.g_volatile_ctrl = ov10823_g_volatile_ctrl,
.s_ctrl = ov10823_s_ctrl,
};
static struct v4l2_ctrl_config ctrl_config_list[] = {
/* Do not change the name field for the controls! */
{
.ops = &ov10823_ctrl_ops,
.id = TEGRA_CAMERA_CID_GAIN,
.name = "Gain",
.type = V4L2_CTRL_TYPE_INTEGER,
.flags = V4L2_CTRL_FLAG_SLIDER,
.min = OV10823_MIN_GAIN,
.max = OV10823_MAX_GAIN,
.def = OV10823_DEFAULT_GAIN,
.step = 1,
},
{
.ops = &ov10823_ctrl_ops,
.id = TEGRA_CAMERA_CID_FRAME_LENGTH,
.name = "Frame Length",
.type = V4L2_CTRL_TYPE_INTEGER,
.flags = V4L2_CTRL_FLAG_SLIDER,
.min = OV10823_MIN_FRAME_LENGTH,
.max = OV10823_MAX_FRAME_LENGTH,
.def = OV10823_DEFAULT_FRAME_LENGTH,
.step = 1,
},
{
.ops = &ov10823_ctrl_ops,
.id = TEGRA_CAMERA_CID_COARSE_TIME,
.name = "Coarse Time",
.type = V4L2_CTRL_TYPE_INTEGER,
.flags = V4L2_CTRL_FLAG_SLIDER,
.min = OV10823_MIN_EXPOSURE_COARSE,
.max = OV10823_MAX_EXPOSURE_COARSE,
.def = OV10823_DEFAULT_EXPOSURE_COARSE,
.step = 1,
},
{
.ops = &ov10823_ctrl_ops,
.id = TEGRA_CAMERA_CID_GROUP_HOLD,
.name = "Group Hold",
.type = V4L2_CTRL_TYPE_INTEGER_MENU,
.min = 0,
.max = ARRAY_SIZE(switch_ctrl_qmenu) - 1,
.menu_skip_mask = 0,
.def = 0,
.qmenu_int = switch_ctrl_qmenu,
},
{
.ops = &ov10823_ctrl_ops,
.id = TEGRA_CAMERA_CID_HDR_EN,
.name = "HDR enable",
.type = V4L2_CTRL_TYPE_INTEGER_MENU,
.min = 0,
.max = ARRAY_SIZE(switch_ctrl_qmenu) - 1,
.menu_skip_mask = 0,
.def = 0,
.qmenu_int = switch_ctrl_qmenu,
},
{
.ops = &ov10823_ctrl_ops,
.id = TEGRA_CAMERA_CID_OTP_DATA,
.name = "OTP Data",
.type = V4L2_CTRL_TYPE_STRING,
.flags = V4L2_CTRL_FLAG_READ_ONLY,
.min = 0,
.max = OV10823_OTP_STR_SIZE,
.step = 2,
},
{
.ops = &ov10823_ctrl_ops,
.id = TEGRA_CAMERA_CID_FUSE_ID,
.name = "Fuse ID",
.type = V4L2_CTRL_TYPE_STRING,
.flags = V4L2_CTRL_FLAG_READ_ONLY,
.min = 0,
.max = OV10823_FUSE_ID_STR_SIZE,
.step = 2,
},
};
static inline void ov10823_get_frame_length_regs(ov10823_reg *regs,
u16 frame_length, int fsync)
{
/* 2 registers for FL, i.e., 2-byte FL */
regs->addr = 0x380e;
regs->val = (frame_length >> 8) & 0xff;
(regs + 1)->addr = 0x380f;
(regs + 1)->val = (frame_length) & 0xff;
if (fsync == OV10823_FSYNC_SLAVE) {
(regs + 2)->addr = 0x3826;
(regs + 2)->val = ((frame_length - 4) >> 8) & 0xff;
(regs + 3)->addr = 0x3827;
(regs + 3)->val = (frame_length - 4) & 0xff;
} else {
(regs + 2)->addr = 0x3830;
(regs + 2)->val = ((frame_length - 4) >> 8) & 0xff;
(regs + 3)->addr = 0x3831;
(regs + 3)->val = (frame_length - 4) & 0xff;
}
(regs + 4)->addr = OV10823_TABLE_END;
(regs + 4)->val = 0;
}
static inline void ov10823_get_coarse_time_regs(ov10823_reg *regs,
u16 coarse_time)
{
/* 3 registers for CT, i.e., 3-byte CT */
regs->addr = 0x3500;
regs->val = (coarse_time >> 12) & 0xff;
(regs + 1)->addr = 0x3501;
(regs + 1)->val = (coarse_time >> 4) & 0xff;
(regs + 2)->addr = 0x3502;
(regs + 2)->val = (coarse_time & 0xf) << 4;
(regs + 3)->addr = OV10823_TABLE_END;
(regs + 3)->val = 0;
}
static inline void ov10823_get_gain_reg(ov10823_reg *regs,
u16 gain)
{
/* 2 register for gain, i.e., 2-byte gain */
regs->addr = 0x350a;
regs->val = (gain >> 8) & 0xff;
(regs + 1)->addr = 0x350b;
(regs + 1)->val = (gain) & 0xff;
(regs + 2)->addr = OV10823_TABLE_END;
(regs + 2)->val = 0;
}
static inline int ov10823_read_reg(struct camera_common_data *s_data,
u16 addr, u8 *val)
{
struct ov10823 *priv = (struct ov10823 *)s_data->priv;
unsigned int temp_val;
int err;
err = regmap_read(priv->regmap, addr, &temp_val);
if (!err)
*val = temp_val;
return err;
}
static int ov10823_write_reg(struct camera_common_data *s_data,
u16 addr, u8 val)
{
int err;
struct ov10823 *priv = (struct ov10823 *)s_data->priv;
struct device *dev = &priv->i2c_client->dev;
err = regmap_write(priv->regmap, addr, val);
if (err)
dev_err(dev, "%s: i2c write failed, %x = %x\n",
__func__, addr, val);
return err;
}
static int ov10823_write_table(struct ov10823 *priv,
const ov10823_reg table[])
{
return regmap_util_write_table_8(priv->regmap,
table,
NULL, 0,
OV10823_TABLE_WAIT_MS,
OV10823_TABLE_END);
}
static int ov10823_i2c_addr_assign(struct ov10823 *priv, u8 i2c_addr)
{
struct device *dev = &priv->i2c_client->dev;
struct i2c_msg msg;
unsigned char data[3];
int err = 0;
/*
* It seems that the way SID works for the OV10823 I2C slave address is
* that:
*
* SID 0 = 0x20
* SID 1 = 0x6c
*
* Address 0x20 is programmable via register 0x300c, and
* address 0x6c is programmable via register 0x3661.
*
* So, the scheme to assign addresses to an (almost) arbitrary
* number of sensors is to consider 0x20 to be the "off" address.
* Start each sensor with SID as 0 so that they appear to be off.
*
* Then, to assign an address to one sensor:
*
* 0. Set corresponding SID to 1 (now only that sensor responds
* to 0x6c).
* 1. Use 0x6C to program address 0x20 to the new address.
* 2. Set corresponding SID back to 0 (so it no longer responds
* to 0x6c, but instead responds to the new address).
*/
if (i2c_addr == OV10823_DEFAULT_I2C_ADDRESS_20) {
dev_info(dev, "Using default I2C address 0x%02x\n", i2c_addr);
if (gpio_is_valid(priv->cam_sid_gpio)) {
gpio_set_value(priv->cam_sid_gpio, 0);
msleep_range(1);
}
return 0;
} else if (i2c_addr == OV10823_DEFAULT_I2C_ADDRESS_6C) {
dev_info(dev, "Using default I2C address 0x%02x\n", i2c_addr);
if (gpio_is_valid(priv->cam_sid_gpio)) {
gpio_set_value(priv->cam_sid_gpio, 1);
msleep_range(1);
}
return 0;
}
/*
* From this point on, we are trying to program the programmable
* slave address. We necessarily need to have a cam-sid-gpio for this.
*/
if (!gpio_is_valid(priv->cam_sid_gpio)) {
dev_err(dev, "Missing cam-sid-gpio, cannot program I2C addr\n");
return -EINVAL;
}
gpio_set_value(priv->cam_sid_gpio, 1);
msleep_range(1);
/*
* Have to make the I2C message manually because we are using a
* different I2C slave address for this transaction, rather than
* the one in the device tree for this device.
*/
data[0] = (OV10823_SC_SCCB_ID_ADDR >> 8) & 0xff;
data[1] = OV10823_SC_SCCB_ID_ADDR & 0xff;
data[2] = ((i2c_addr) << 1) & 0xff;
/*
* Use the programmable default I2C slave address so that if we have
* multiple sensors of this same kind, when we change one sensor's
* address, the next sensor address change message won't go to that
* same sensor.
*/
msg.addr = OV10823_DEFAULT_I2C_ADDRESS_6C;
msg.flags = 0;
msg.len = 3;
msg.buf = data;
if (i2c_transfer(priv->i2c_client->adapter, &msg, 1) != 1) {
dev_err(dev, "Error assigning I2C address to 0x%02x\n",
i2c_addr);
err = -EIO;
}
gpio_set_value(priv->cam_sid_gpio, 0);
msleep_range(1);
return err;
}
static int ov10823_power_on(struct camera_common_data *s_data)
{
struct ov10823 *priv = (struct ov10823 *)s_data->priv;
struct camera_common_power_rail *pw = &priv->power;
struct device *dev = &priv->i2c_client->dev;
int err;
dev_dbg(dev, "%s: power on\n", __func__);
if (priv->pdata->power_on) {
err = priv->pdata->power_on(pw);
if (err)
dev_err(dev, "%s failed.\n", __func__);
else
pw->state = SWITCH_ON;
return err;
}
if (pw->avdd) {
err = regulator_enable(pw->avdd);
if (err)
goto avdd_fail;
}
if (pw->dvdd) {
err = regulator_enable(pw->dvdd);
if (err)
goto dvdd_fail;
}
if (pw->iovdd) {
err = regulator_enable(pw->iovdd);
if (err)
goto iovdd_fail;
}
usleep_range(5350, 5360);
err = ov10823_i2c_addr_assign(priv, priv->i2c_client->addr);
if (err)
goto addr_assign_fail;
pw->state = SWITCH_ON;
return 0;
addr_assign_fail:
if (pw->iovdd)
regulator_disable(pw->iovdd);
iovdd_fail:
if (pw->dvdd)
regulator_disable(pw->dvdd);
dvdd_fail:
if (pw->avdd)
regulator_disable(pw->avdd);
avdd_fail:
dev_err(dev, "%s failed.\n", __func__);
return -ENODEV;
}
static int ov10823_power_off(struct camera_common_data *s_data)
{
int err = 0;
struct ov10823 *priv = (struct ov10823 *)s_data->priv;
struct camera_common_power_rail *pw = &priv->power;
struct device *dev = &priv->i2c_client->dev;
dev_dbg(dev, "%s: power off\n", __func__);
ov10823_write_table(priv, mode_table[OV10823_MODE_STOP_STREAM]);
if (priv->pdata->power_off) {
err = priv->pdata->power_off(pw);
if (err)
dev_err(dev, "%s failed.\n", __func__);
else
goto power_off_done;
}
if (pw->iovdd)
regulator_disable(pw->iovdd);
if (pw->dvdd)
regulator_disable(pw->dvdd);
if (pw->avdd)
regulator_disable(pw->avdd);
return err;
power_off_done:
pw->state = SWITCH_OFF;
return 0;
}
static int ov10823_power_put(struct ov10823 *priv)
{
return 0;
}
static int ov10823_power_get(struct ov10823 *priv)
{
struct camera_common_power_rail *pw = &priv->power;
struct camera_common_pdata *pdata = priv->pdata;
struct device *dev = &priv->i2c_client->dev;
const char *mclk_name;
int err = 0;
mclk_name = priv->pdata->mclk_name ?
priv->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);
}
if (priv->pdata->regulators.avdd) {
err = camera_common_regulator_get(dev,
&pw->avdd, pdata->regulators.avdd);
if (err) {
dev_err(dev, "unable to get regulator %s, err = %d\n",
pdata->regulators.avdd, err);
goto done;
}
}
if (priv->pdata->regulators.dvdd) {
err = camera_common_regulator_get(dev,
&pw->dvdd, pdata->regulators.dvdd);
if (err) {
dev_err(dev, "unable to get regulator %s, err = %d\n",
pdata->regulators.dvdd, err);
goto done;
}
}
if (priv->pdata->regulators.iovdd) {
err = camera_common_regulator_get(dev,
&pw->iovdd, pdata->regulators.iovdd);
if (err) {
dev_err(dev, "unable to get regulator %s, err = %d\n",
pdata->regulators.iovdd, err);
goto done;
}
}
done:
pw->state = SWITCH_OFF;
return err;
}
static int ov10823_verify_chip_id(struct ov10823 *priv)
{
struct i2c_client *client = priv->i2c_client;
struct camera_common_data *s_data = priv->s_data;
u8 chip_id_hi, chip_id_lo;
u16 chip_id;
int err;
err = ov10823_read_reg(s_data, OV10823_SC_CHIP_ID_HIGH_ADDR,
&chip_id_hi);
if (err) {
dev_err(&client->dev, "Failed to read chip ID\n");
return err;
}
err = ov10823_read_reg(s_data, OV10823_SC_CHIP_ID_LOW_ADDR,
&chip_id_lo);
if (err) {
dev_err(&client->dev, "Failed to read chip ID\n");
return err;
}
chip_id = (chip_id_hi << 8) | chip_id_lo;
if (chip_id != 0xA820) {
dev_err(&client->dev, "Read unknown chip ID 0x%04x\n", chip_id);
return -EINVAL;
}
return 0;
}
static int ov10823_set_gain(struct ov10823 *priv, s32 val);
static int ov10823_set_frame_length(struct ov10823 *priv, s32 val);
static int ov10823_set_coarse_time(struct ov10823 *priv, s32 val);
static int ov10823_s_stream(struct v4l2_subdev *sd, int enable)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct camera_common_data *s_data = to_camera_common_data(&client->dev);
struct ov10823 *priv = (struct ov10823 *)s_data->priv;
struct v4l2_control control;
int err;
if (!enable) {
dev_dbg(&client->dev, "%s: stream off\n", __func__);
return ov10823_write_table(priv,
mode_table[OV10823_MODE_STOP_STREAM]);
}
dev_dbg(&client->dev, "%s: write mode table %d\n",
__func__, s_data->mode);
err = ov10823_write_table(priv, mode_table[s_data->mode]);
if (fsync_table[priv->fsync]) {
dev_dbg(&client->dev, "%s: write fsync table %d\n", __func__,
priv->fsync);
err = ov10823_write_table(priv, fsync_table[priv->fsync]);
if (err)
goto exit;
}
if ((priv->fsync == OV10823_FSYNC_SLAVE) &&
fsync_slave_mode_table[s_data->mode]) {
dev_dbg(&client->dev, "%s: write fsync slave mode table %d\n",
__func__, s_data->mode);
err = ov10823_write_table(
priv, fsync_slave_mode_table[s_data->mode]);
if (err)
goto exit;
}
if (s_data->override_enable) {
/* write list of override regs for the asking frame length, */
/* coarse integration time, and gain. Failures to write */
/* overrides are non-fatal. */
control.id = TEGRA_CAMERA_CID_GAIN;
err = v4l2_g_ctrl(&priv->ctrl_handler, &control);
err |= ov10823_set_gain(priv, control.value);
if (err)
dev_dbg(&client->dev,
"%s: error gain override\n", __func__);
control.id = TEGRA_CAMERA_CID_FRAME_LENGTH;
err = v4l2_g_ctrl(&priv->ctrl_handler, &control);
err |= ov10823_set_frame_length(priv, control.value);
if (err)
dev_dbg(&client->dev,
"%s: error frame length override\n", __func__);
control.id = TEGRA_CAMERA_CID_COARSE_TIME;
err = v4l2_g_ctrl(&priv->ctrl_handler, &control);
err |= ov10823_set_coarse_time(priv, control.value);
if (err)
dev_dbg(&client->dev,
"%s: error coarse time override\n", __func__);
}
/*
* Handle mirror and flip.
* Horizontal and vertical binning needs to be enabled for mirror and
* flip, respectively, so doing this operation is probably not ideal
* if the full resolution of the sensor is to be used.
*/
if (priv->mirror) {
if (s_data->frmfmt->size.width > (OV10823_MAX_WIDTH / 2))
ov10823_write_reg(s_data, 0x3821, 0x04);
else
ov10823_write_reg(s_data, 0x3821, 0x06);
}
if (priv->flip) {
if (s_data->frmfmt->size.height > (OV10823_MAX_HEIGHT / 2))
ov10823_write_reg(s_data, 0x3820, 0x04);
else
ov10823_write_reg(s_data, 0x3820, 0x06);
}
dev_dbg(&client->dev, "%s: stream on\n", __func__);
err = ov10823_write_table(priv, mode_table[OV10823_MODE_START_STREAM]);
if (err)
goto exit;
/*
* If the sensor is in fsync slave mode, and is in the middle of
* sending a frame when it gets a strobe on the fsin pin, it may
* prematurely end the frame, resulting in a short frame on our
* camera host. So, after starting streaming, we assume fsync
* master has already been told to start streaming, and we wait some
* amount of time in order to skip the possible short frame. The
* length of time to wait should be at least our sample period.
* Assume worse case of 30fps (33.3ms), and add a bit more.
*/
if (priv->fsync == OV10823_FSYNC_SLAVE)
msleep(40);
return 0;
exit:
dev_dbg(&client->dev, "%s: error setting stream\n", __func__);
return err;
}
static int ov10823_g_input_status(struct v4l2_subdev *sd, u32 *status)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct camera_common_data *s_data = to_camera_common_data(&client->dev);
struct ov10823 *priv = (struct ov10823 *)s_data->priv;
struct camera_common_power_rail *pw = &priv->power;
*status = pw->state == SWITCH_ON;
return 0;
}
static struct v4l2_subdev_video_ops ov10823_subdev_video_ops = {
.s_stream = ov10823_s_stream,
.g_mbus_config = camera_common_g_mbus_config,
.g_input_status = ov10823_g_input_status,
};
static struct v4l2_subdev_core_ops ov10823_subdev_core_ops = {
.s_power = camera_common_s_power,
};
static int ov10823_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
return camera_common_g_fmt(sd, &format->format);
}
static int ov10823_set_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
int ret;
if (format->which == V4L2_SUBDEV_FORMAT_TRY)
ret = camera_common_try_fmt(sd, &format->format);
else
ret = camera_common_s_fmt(sd, &format->format);
return ret;
}
static struct v4l2_subdev_pad_ops ov10823_subdev_pad_ops = {
.set_fmt = ov10823_set_fmt,
.get_fmt = ov10823_get_fmt,
.enum_mbus_code = camera_common_enum_mbus_code,
.enum_frame_size = camera_common_enum_framesizes,
.enum_frame_interval = camera_common_enum_frameintervals,
};
static struct v4l2_subdev_ops ov10823_subdev_ops = {
.core = &ov10823_subdev_core_ops,
.video = &ov10823_subdev_video_ops,
.pad = &ov10823_subdev_pad_ops,
};
static struct of_device_id ov10823_of_match[] = {
{ .compatible = "nvidia,ov10823", },
{ },
};
static struct camera_common_sensor_ops ov10823_common_ops = {
.power_on = ov10823_power_on,
.power_off = ov10823_power_off,
.write_reg = ov10823_write_reg,
.read_reg = ov10823_read_reg,
};
static int ov10823_set_group_hold(struct ov10823 *priv)
{
struct device *dev = &priv->i2c_client->dev;
int err;
int gh_prev = switch_ctrl_qmenu[priv->group_hold_prev];
if (priv->group_hold_en == true && gh_prev == SWITCH_OFF) {
/* group hold start */
err = ov10823_write_reg(priv->s_data,
OV10823_GROUP_HOLD_ADDR, 0x00);
if (err)
goto fail;
priv->group_hold_prev = 1;
} else if (priv->group_hold_en == false && gh_prev == SWITCH_ON) {
/* group hold end */
err = ov10823_write_reg(priv->s_data,
OV10823_GROUP_HOLD_ADDR, 0x10);
/* quick launch */
err |= ov10823_write_reg(priv->s_data,
OV10823_GROUP_HOLD_ADDR, 0xA0);
if (err)
goto fail;
priv->group_hold_prev = 0;
}
return 0;
fail:
dev_dbg(dev, "%s: Group hold control error\n", __func__);
return err;
}
static int ov10823_set_gain(struct ov10823 *priv, s32 val)
{
struct device *dev = &priv->i2c_client->dev;
ov10823_reg reg_list[3];
int err;
u16 gain;
/* max_gain 15.5x ---> 0x350A=0x00, 0x350B=0xF8 */
/* min_gain 1.0x ---> 0x350A=0x00, 0x350B=0x10 */
/* translate value */
gain = ov10823_to_gain((u32)val, OV10823_GAIN_SHIFT);
dev_dbg(dev, "%s: gain: %d\n", __func__, gain);
ov10823_get_gain_reg(reg_list, gain);
ov10823_set_group_hold(priv);
err = ov10823_write_table(priv, reg_list);
if (err)
goto fail;
return 0;
fail:
dev_dbg(dev, "%s: GAIN control error\n", __func__);
return err;
}
static int ov10823_set_frame_length(struct ov10823 *priv, s32 val)
{
struct device *dev = &priv->i2c_client->dev;
ov10823_reg reg_list[5];
int err;
u16 frame_length;
frame_length = (u16)val;
dev_dbg(dev, "%s: frame_length: %d\n", __func__, frame_length);
ov10823_get_frame_length_regs(reg_list, frame_length, priv->fsync);
ov10823_set_group_hold(priv);
err = ov10823_write_table(priv, reg_list);
if (err)
goto fail;
return 0;
fail:
dev_dbg(dev, "%s: FRAME_LENGTH control error\n", __func__);
return err;
}
static int ov10823_set_coarse_time(struct ov10823 *priv, s32 val)
{
struct device *dev = &priv->i2c_client->dev;
ov10823_reg reg_list[4];
int err;
u16 coarse_time;
coarse_time = (u16)val;
dev_dbg(dev, "%s: coarse_time: %d\n", __func__, coarse_time);
ov10823_get_coarse_time_regs(reg_list, coarse_time);
ov10823_set_group_hold(priv);
err = ov10823_write_table(priv, reg_list);
if (err)
goto fail;
return 0;
fail:
dev_dbg(dev, "%s: COARSE_TIME control error\n", __func__);
return err;
}
static int ov10823_read_otp(struct ov10823 *priv, u8 *buf,
u16 addr, int size)
{
int err;
err = ov10823_write_reg(priv->s_data, OV10823_ISP_CTRL_ADDR, 0x00);
if (err)
return err;
/* Start streaming before write or read */
err = ov10823_write_reg(priv->s_data, 0x0100, 0x01);
if (err)
return err;
msleep(20);
/* By default otp loading works in auto mode, but we can switch to */
/* manual mode through OV10823_OTP_MODE_CTRL_ADDR[6] and the start */
/* addr and end addr of manual mode can be configured by registers */
/* accordingly */
/* Loading enable */
/* 1: manual mode */
/* 0: auto mode */
err = ov10823_write_reg(priv->s_data, OV10823_OTP_LOAD_CTRL_ADDR, 0x01);
if (err)
return err;
msleep(20);
err = regmap_bulk_read(priv->regmap, addr, buf, size);
if (err)
return err;
return 0;
}
static int ov10823_otp_setup(struct ov10823 *priv)
{
struct device *dev = &priv->i2c_client->dev;
int i;
struct v4l2_ctrl *ctrl;
u8 otp_buf[OV10823_OTP_SIZE];
ov10823_read_otp(priv, &otp_buf[0],
OV10823_OTP_SRAM_START_ADDR,
OV10823_OTP_SIZE);
ctrl = v4l2_ctrl_find(&priv->ctrl_handler, TEGRA_CAMERA_CID_OTP_DATA);
if (!ctrl) {
dev_err(dev, "could not find device ctrl.\n");
return -EINVAL;
}
for (i = 0; i < OV10823_OTP_SIZE; i++)
sprintf(&ctrl->p_new.p_char[i*2], "%02x",
otp_buf[i]);
ctrl->p_cur.p_char = ctrl->p_new.p_char;
return 0;
}
static int ov10823_fuse_id_setup(struct ov10823 *priv)
{
struct device *dev = &priv->i2c_client->dev;
int i;
struct v4l2_ctrl *ctrl;
u8 fuse_id[OV10823_FUSE_ID_SIZE];
ov10823_read_otp(priv, &fuse_id[0],
OV10823_FUSE_ID_OTP_BASE_ADDR,
OV10823_FUSE_ID_SIZE);
ctrl = v4l2_ctrl_find(&priv->ctrl_handler, TEGRA_CAMERA_CID_FUSE_ID);
if (!ctrl) {
dev_err(dev, "could not find device ctrl.\n");
return -EINVAL;
}
for (i = 0; i < OV10823_FUSE_ID_SIZE; i++)
sprintf(&ctrl->p_new.p_char[i*2], "%02x",
fuse_id[i]);
ctrl->p_cur.p_char = ctrl->p_new.p_char;
return 0;
}
static int ov10823_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov10823 *priv =
container_of(ctrl->handler, struct ov10823, ctrl_handler);
struct device *dev = &priv->i2c_client->dev;
int err = 0;
if (priv->power.state == SWITCH_OFF)
return 0;
switch (ctrl->id) {
default:
dev_err(dev, "%s: unknown ctrl id.\n", __func__);
return -EINVAL;
}
return err;
}
static int ov10823_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct ov10823 *priv =
container_of(ctrl->handler, struct ov10823, ctrl_handler);
struct device *dev = &priv->i2c_client->dev;
int err = 0;
if (priv->power.state == SWITCH_OFF)
return 0;
switch (ctrl->id) {
case TEGRA_CAMERA_CID_GAIN:
err = ov10823_set_gain(priv, ctrl->val);
break;
case TEGRA_CAMERA_CID_FRAME_LENGTH:
/*
* This is a workaround for nvbug 1865041, where setting the
* VTS timing registers when the sensor is set up for fsync
* master or slave leads to instability if streaming has
* already started.
*/
if (priv->fsync == OV10823_FSYNC_NONE)
err = ov10823_set_frame_length(priv, ctrl->val);
break;
case TEGRA_CAMERA_CID_COARSE_TIME:
err = ov10823_set_coarse_time(priv, ctrl->val);
break;
case TEGRA_CAMERA_CID_GROUP_HOLD:
if (switch_ctrl_qmenu[ctrl->val] == SWITCH_ON) {
priv->group_hold_en = true;
} else {
priv->group_hold_en = false;
err = ov10823_set_group_hold(priv);
}
break;
case TEGRA_CAMERA_CID_HDR_EN:
break;
default:
dev_err(dev, "%s: unknown ctrl id.\n", __func__);
return -EINVAL;
}
return err;
}
static int ov10823_ctrls_init(struct ov10823 *priv)
{
struct i2c_client *client = priv->i2c_client;
struct v4l2_ctrl *ctrl;
int num_ctrls;
int err;
int i;
dev_dbg(&client->dev, "%s++\n", __func__);
num_ctrls = ARRAY_SIZE(ctrl_config_list);
v4l2_ctrl_handler_init(&priv->ctrl_handler, num_ctrls);
for (i = 0; i < num_ctrls; i++) {
ctrl = v4l2_ctrl_new_custom(&priv->ctrl_handler,
&ctrl_config_list[i], NULL);
if (ctrl == NULL) {
dev_err(&client->dev, "Failed to init %s ctrl\n",
ctrl_config_list[i].name);
continue;
}
if (ctrl_config_list[i].type == V4L2_CTRL_TYPE_STRING &&
ctrl_config_list[i].flags & V4L2_CTRL_FLAG_READ_ONLY) {
ctrl->p_new.p_char = devm_kzalloc(&client->dev,
ctrl_config_list[i].max + 1, GFP_KERNEL);
}
priv->ctrls[i] = ctrl;
}
priv->num_ctrls = num_ctrls;
priv->subdev->ctrl_handler = &priv->ctrl_handler;
if (priv->ctrl_handler.error) {
dev_err(&client->dev, "Error %d adding controls\n",
priv->ctrl_handler.error);
err = priv->ctrl_handler.error;
goto error;
}
err = v4l2_ctrl_handler_setup(&priv->ctrl_handler);
if (err) {
dev_err(&client->dev,
"Error %d setting default controls\n", err);
goto error;
}
return 0;
error:
v4l2_ctrl_handler_free(&priv->ctrl_handler);
return err;
}
MODULE_DEVICE_TABLE(of, ov10823_of_match);
static int ov10823_parse_dt(struct i2c_client *client, struct ov10823 *priv)
{
struct device_node *np = client->dev.of_node;
const char *fsync_str;
int gpio;
int err;
err = of_property_read_string(np, "mclk", &priv->pdata->mclk_name);
if (err) {
dev_err(&client->dev, "mclk not in DT\n");
return -EINVAL;
}
err = of_property_read_string(np, "fsync", &fsync_str);
if (!err && fsync_str && (strcmp(fsync_str, "master") == 0))
priv->fsync = OV10823_FSYNC_MASTER;
else if (!err && fsync_str && (strcmp(fsync_str, "slave") == 0))
priv->fsync = OV10823_FSYNC_SLAVE;
else
priv->fsync = OV10823_FSYNC_NONE;
gpio = of_get_named_gpio(np, "pwdn-gpios", 0);
if (gpio < 0) {
dev_dbg(&client->dev, "pwdn gpios not in DT\n");
gpio = 0;
}
priv->pdata->pwdn_gpio = (unsigned int)gpio;
gpio = of_get_named_gpio(np, "reset-gpios", 0);
if (gpio < 0) {
dev_dbg(&client->dev, "reset gpios not in DT\n");
gpio = 0;
}
priv->pdata->reset_gpio = (unsigned int)gpio;
priv->mcu_boot_gpio =
of_get_named_gpio(np, "mcu-boot-gpios", 0);
priv->mcu_reset_gpio =
of_get_named_gpio(np, "mcu-reset-gpios", 0);
priv->cam_sid_gpio = of_get_named_gpio(np, "cam-sid-gpios", 0);
priv->mirror = of_property_read_bool(np, "mirror");
priv->flip = of_property_read_bool(np, "flip");
err = of_property_read_string(np, "avdd-reg",
&priv->pdata->regulators.avdd);
if (err)
dev_warn(&client->dev, "avdd-reg not in DT\n");
err = of_property_read_string(np, "dvdd-reg",
&priv->pdata->regulators.dvdd);
if (err)
dev_warn(&client->dev, "dvdd-reg not in DT\n");
err = of_property_read_string(np, "iovdd-reg",
&priv->pdata->regulators.iovdd);
if (err)
dev_warn(&client->dev, "iovdd-reg not in DT\n");
return 0;
}
static int ov10823_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 ov10823_subdev_internal_ops = {
.open = ov10823_open,
};
static const struct media_entity_operations ov10823_media_ops = {
.link_validate = v4l2_subdev_link_validate,
};
static int ov10823_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct camera_common_data *common_data;
struct ov10823 *priv;
int err;
dev_info(&client->dev, "probing v4l2 sensor.\n");
common_data = devm_kzalloc(&client->dev,
sizeof(struct camera_common_data), GFP_KERNEL);
priv = devm_kzalloc(&client->dev,
sizeof(struct ov10823) + sizeof(struct v4l2_ctrl *) *
ARRAY_SIZE(ctrl_config_list),
GFP_KERNEL);
if (!priv) {
dev_err(&client->dev, "unable to allocate memory!\n");
return -ENOMEM;
}
priv->regmap = devm_regmap_init_i2c(client, &sensor_regmap_config);
if (IS_ERR(priv->regmap)) {
dev_err(&client->dev,
"regmap init failed: %ld\n", PTR_ERR(priv->regmap));
return -ENODEV;
}
priv->pdata = devm_kzalloc(&client->dev,
sizeof(struct camera_common_pdata),
GFP_KERNEL);
if (!priv->pdata) {
dev_err(&client->dev,
"unable to allocate camera_common_pdata\n");
return -ENOMEM;
}
err = ov10823_parse_dt(client, priv);
if (err)
return err;
common_data->ops = &ov10823_common_ops;
common_data->ctrl_handler = &priv->ctrl_handler;
common_data->dev = &client->dev;
common_data->frmfmt = ov10823_frmfmt;
common_data->colorfmt = camera_common_find_datafmt(
OV10823_DEFAULT_DATAFMT);
common_data->power = &priv->power;
common_data->ctrls = priv->ctrls;
common_data->priv = (void *)priv;
common_data->numctrls = ARRAY_SIZE(ctrl_config_list);
common_data->numfmts = ARRAY_SIZE(ov10823_frmfmt);
common_data->def_mode = OV10823_DEFAULT_MODE;
common_data->def_width = OV10823_DEFAULT_WIDTH;
common_data->def_height = OV10823_DEFAULT_HEIGHT;
common_data->def_clk_freq = OV10823_DEFAULT_CLK_FREQ;
common_data->fmt_width = common_data->def_width;
common_data->fmt_height = common_data->def_height;
priv->i2c_client = client;
priv->s_data = common_data;
priv->subdev = &common_data->subdev;
priv->subdev->dev = &client->dev;
priv->group_hold_prev = 0;
err = ov10823_power_get(priv);
if (err)
return err;
/*
* If our device tree node is given MCU GPIOs, then we are expected to
* reset the MCU.
*/
if (gpio_is_valid(priv->mcu_boot_gpio) &&
gpio_is_valid(priv->mcu_reset_gpio)) {
dev_info(&client->dev, "Resetting MCU\n");
gpio_set_value(priv->mcu_boot_gpio, 0);
gpio_set_value(priv->mcu_reset_gpio, 0);
msleep_range(1);
gpio_set_value(priv->mcu_reset_gpio, 1);
}
err = camera_common_initialize(common_data, "ov10823");
if (err) {
dev_err(&client->dev, "Failed to initialize ov10823\n");
return err;
}
v4l2_i2c_subdev_init(&common_data->subdev, client,
&ov10823_subdev_ops);
err = ov10823_ctrls_init(priv);
if (err)
return err;
err = camera_common_s_power(priv->subdev, true);
if (err)
return -ENODEV;
err = ov10823_verify_chip_id(priv);
if (err)
goto error;
err = ov10823_otp_setup(priv);
if (err) {
dev_err(&client->dev,
"Error %d reading otp data\n", err);
goto error;
}
err = ov10823_fuse_id_setup(priv);
if (err) {
dev_err(&client->dev,
"Error %d reading fuse id data\n", err);
goto error;
}
priv->subdev->internal_ops = &ov10823_subdev_internal_ops;
priv->subdev->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
V4L2_SUBDEV_FL_HAS_EVENTS;
#if defined(CONFIG_MEDIA_CONTROLLER)
priv->pad.flags = MEDIA_PAD_FL_SOURCE;
priv->subdev->entity.ops = &ov10823_media_ops;
err = tegra_media_entity_init(&priv->subdev->entity, 1,
&priv->pad, true, true);
if (err < 0) {
dev_err(&client->dev, "unable to init media entity\n");
return err;
}
#endif
err = v4l2_async_register_subdev(priv->subdev);
if (err)
return err;
dev_info(&client->dev, "Probed v4l2 sensor.\n");
camera_common_s_power(priv->subdev, false);
return 0;
error:
camera_common_s_power(priv->subdev, false);
return err;
}
static int
ov10823_remove(struct i2c_client *client)
{
struct camera_common_data *s_data = to_camera_common_data(&client->dev);
struct ov10823 *priv = (struct ov10823 *)s_data->priv;
v4l2_async_unregister_subdev(priv->subdev);
#if defined(CONFIG_MEDIA_CONTROLLER)
media_entity_cleanup(&priv->subdev->entity);
#endif
v4l2_ctrl_handler_free(&priv->ctrl_handler);
ov10823_power_put(priv);
camera_common_cleanup(s_data);
return 0;
}
static const struct i2c_device_id ov10823_id[] = {
{ "ov10823", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, ov10823_id);
static struct i2c_driver ov10823_i2c_driver = {
.driver = {
.name = "ov10823",
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(ov10823_of_match),
},
.probe = ov10823_probe,
.remove = ov10823_remove,
.id_table = ov10823_id,
};
module_i2c_driver(ov10823_i2c_driver);
MODULE_DESCRIPTION("SoC Camera driver for Omnivison OV10823");
MODULE_AUTHOR("NVIDIA Corporation");
MODULE_LICENSE("GPL v2");
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