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media: i2c: smiapp: simplify getting state container 

The pointer to 'struct v4l2_subdev' is stored in drvdata via
v4l2_i2c_subdev_init() so there is no point of a dance like:

    struct i2c_client *client = to_i2c_client(struct device *dev)
    struct v4l2_subdev *sd = i2c_get_clientdata(client);

This allows to remove local variable 'client' and few pointer
dereferences.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Krzysztof Kozlowski 2020-09-21 18:23:41 +02:00 коммит произвёл Mauro Carvalho Chehab
Родитель 9a855b73e8
Коммит b5783c4d1f
1 изменённых файлов: 13 добавлений и 15 удалений
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28
drivers/media/i2c/smiapp/smiapp-core.c
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@ -1185,8 +1185,7 @@ out:
static int smiapp_power_on(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
struct v4l2_subdev *subdev = dev_get_drvdata(dev);
struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
/*
* The sub-device related to the I2C device is always the
@ -1199,14 +1198,14 @@ static int smiapp_power_on(struct device *dev)
rval = regulator_enable(sensor->vana);
if (rval) {
dev_err(&client->dev, "failed to enable vana regulator\n");
dev_err(dev, "failed to enable vana regulator\n");
return rval;
}
usleep_range(1000, 1000);
rval = clk_prepare_enable(sensor->ext_clk);
if (rval < 0) {
dev_dbg(&client->dev, "failed to enable xclk\n");
dev_dbg(dev, "failed to enable xclk\n");
goto out_xclk_fail;
}
usleep_range(1000, 1000);
@ -1230,7 +1229,7 @@ static int smiapp_power_on(struct device *dev)
if (sensor->hwcfg->i2c_addr_alt) {
rval = smiapp_change_cci_addr(sensor);
if (rval) {
dev_err(&client->dev, "cci address change error\n");
dev_err(dev, "cci address change error\n");
goto out_cci_addr_fail;
}
}
@ -1238,14 +1237,14 @@ static int smiapp_power_on(struct device *dev)
rval = smiapp_write(sensor, SMIAPP_REG_U8_SOFTWARE_RESET,
SMIAPP_SOFTWARE_RESET);
if (rval < 0) {
dev_err(&client->dev, "software reset failed\n");
dev_err(dev, "software reset failed\n");
goto out_cci_addr_fail;
}
if (sensor->hwcfg->i2c_addr_alt) {
rval = smiapp_change_cci_addr(sensor);
if (rval) {
dev_err(&client->dev, "cci address change error\n");
dev_err(dev, "cci address change error\n");
goto out_cci_addr_fail;
}
}
@ -1253,7 +1252,7 @@ static int smiapp_power_on(struct device *dev)
rval = smiapp_write(sensor, SMIAPP_REG_U16_COMPRESSION_MODE,
SMIAPP_COMPRESSION_MODE_SIMPLE_PREDICTOR);
if (rval) {
dev_err(&client->dev, "compression mode set failed\n");
dev_err(dev, "compression mode set failed\n");
goto out_cci_addr_fail;
}
@ -1261,28 +1260,28 @@ static int smiapp_power_on(struct device *dev)
sensor, SMIAPP_REG_U16_EXTCLK_FREQUENCY_MHZ,
sensor->hwcfg->ext_clk / (1000000 / (1 << 8)));
if (rval) {
dev_err(&client->dev, "extclk frequency set failed\n");
dev_err(dev, "extclk frequency set failed\n");
goto out_cci_addr_fail;
}
rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_LANE_MODE,
sensor->hwcfg->lanes - 1);
if (rval) {
dev_err(&client->dev, "csi lane mode set failed\n");
dev_err(dev, "csi lane mode set failed\n");
goto out_cci_addr_fail;
}
rval = smiapp_write(sensor, SMIAPP_REG_U8_FAST_STANDBY_CTRL,
SMIAPP_FAST_STANDBY_CTRL_IMMEDIATE);
if (rval) {
dev_err(&client->dev, "fast standby set failed\n");
dev_err(dev, "fast standby set failed\n");
goto out_cci_addr_fail;
}
rval = smiapp_write(sensor, SMIAPP_REG_U8_CSI_SIGNALLING_MODE,
sensor->hwcfg->csi_signalling_mode);
if (rval) {
dev_err(&client->dev, "csi signalling mode set failed\n");
dev_err(dev, "csi signalling mode set failed\n");
goto out_cci_addr_fail;
}
@ -1294,7 +1293,7 @@ static int smiapp_power_on(struct device *dev)
rval = smiapp_call_quirk(sensor, post_poweron);
if (rval) {
dev_err(&client->dev, "post_poweron quirks failed\n");
dev_err(dev, "post_poweron quirks failed\n");
goto out_cci_addr_fail;
}
@ -1312,8 +1311,7 @@ out_xclk_fail:
static int smiapp_power_off(struct device *dev)
{
struct i2c_client *client = to_i2c_client(dev);
struct v4l2_subdev *subdev = i2c_get_clientdata(client);
struct v4l2_subdev *subdev = dev_get_drvdata(dev);
struct smiapp_subdev *ssd = to_smiapp_subdev(subdev);
struct smiapp_sensor *sensor =
container_of(ssd, struct smiapp_sensor, ssds[0]);