We are moving to device tree support on OMAP3, but that currently
breaks ADP1653 driver. This adds device tree support, plus required
documentation.
Signed-off-by: Pavel Machek <[email protected]>
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/adp1653.txt
@@ -0,0 +1,38 @@
+* Analog Devices ADP1653 flash LED driver
+
+Required Properties:
+
+ - compatible: Must contain one of the following
+ - "adi,adp1653"
+
+ - reg: I2C slave address
+
+ - gpios: References to the GPIO that controls the power for the chip.
+
+There are two led outputs available - flash and indicator. One led is
+represented by one child node, nodes need to be named "flash" and "indicator".
+
+Required properties of the LED child node:
+- max-microamp : see Documentation/devicetree/bindings/leds/common.txt
+
+Required properties of the flash LED child node:
+
+- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
+- flash-timeout-microsec : see Documentation/devicetree/bindings/leds/common.txt
+
+Example:
+
+ adp1653: led-controller@30 {
+ compatible = "adi,adp1653";
+ reg = <0x30>;
+ gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
+
+ flash {
+ flash-timeout-microsec = <500000>;
+ flash-max-microamp = <320000>;
+ max-microamp = <50000>;
+ };
+ indicator {
+ max-microamp = <17500>;
+ };
+ };
diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts
index cfddc3d..11d8afd 100644
--- a/arch/arm/boot/dts/omap3-n900.dts
+++ b/arch/arm/boot/dts/omap3-n900.dts
@@ -560,6 +567,22 @@
ti,usb-charger-detection = <&isp1704>;
};
+
+ adp1653: led-controller@30 {
+ compatible = "adi,adp1653";
+ reg = <0x30>;
+ gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
+
+ flash {
+ flash-timeout-microsec = <500000>;
+ flash-max-microamp = <320000>;
+ max-microamp = <50000>;
+ };
+
+ indicator {
+ max-microamp = <17500>;
+ };
+ };
};
&i2c3 {
diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c
index 873fe19..62601b2 100644
--- a/drivers/media/i2c/adp1653.c
+++ b/drivers/media/i2c/adp1653.c
@@ -8,6 +8,7 @@
* Contributors:
* Sakari Ailus <[email protected]>
* Tuukka Toivonen <[email protected]>
+ * Pavel Machek <[email protected]>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -34,9 +35,11 @@
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
+#include <linux/of_gpio.h>
+#include <linux/gpio.h>
#include <media/adp1653.h>
#include <media/v4l2-device.h>
#define TIMEOUT_MAX 820000
#define TIMEOUT_STEP 54600
#define TIMEOUT_MIN (TIMEOUT_MAX - ADP1653_REG_CONFIG_TMR_SET_MAX \
@@ -306,9 +318,18 @@ adp1653_init_device(struct adp1653_flash *flash)
static int
__adp1653_set_power(struct adp1653_flash *flash, int on)
{
- int ret;
+ int ret = 0;
- ret = flash->platform_data->power(&flash->subdev, on);
+ if (flash->platform_data->power)
+ ret = flash->platform_data->power(&flash->subdev, on);
+ else {
+ gpio_set_value(flash->platform_data->power_gpio, on);
+ if (on) {
+ /* Some delay is apparently required. */
+ udelay(20);
+ }
+ }
+
if (ret < 0)
return ret;
@@ -316,8 +337,13 @@ __adp1653_set_power(struct adp1653_flash *flash, int on)
return 0;
ret = adp1653_init_device(flash);
- if (ret < 0)
+ if (ret >= 0)
+ return ret;
+
+ if (flash->platform_data->power)
flash->platform_data->power(&flash->subdev, 0);
+ else
+ gpio_set_value(flash->platform_data->power_gpio, 0);
return ret;
}
@@ -407,21 +433,69 @@ static int adp1653_resume(struct device *dev)
#endif /* CONFIG_PM */
+static int adp1653_of_init(struct i2c_client *client, struct adp1653_flash *flash,
+ struct device_node *node)
+{
+ u32 val;
+ struct adp1653_platform_data *pd;
+ enum of_gpio_flags flags;
+ int gpio;
+ struct device_node *child;
+
+ if (!node)
+ return -EINVAL;
+
+ pd = devm_kzalloc(&client->dev, sizeof(*pd), GFP_KERNEL);
+ if (!pd)
+ return -ENOMEM;
+ flash->platform_data = pd;
+
+ child = of_get_child_by_name(node, "flash");
+ if (!child) return -EINVAL;
+ if (of_property_read_u32(child, "flash-timeout-microsec", &val)) return -EINVAL;
+ pd->max_flash_timeout = val;
+ if (of_property_read_u32(child, "flash-max-microamp", &val)) return -EINVAL;
+ pd->max_flash_intensity = val/1000;
+ if (of_property_read_u32(child, "max-microamp", &val)) return -EINVAL;
+ pd->max_torch_intensity = val/1000;
+
+ child = of_get_child_by_name(node, "indicator");
+ if (!child) return -EINVAL;
+ if (of_property_read_u32(child, "max-microamp", &val)) return -EINVAL;
+ pd->max_indicator_intensity = val;
+
+ if (!of_find_property(node, "gpios", NULL)) {
+ dev_err(&client->dev, "No gpio node\n");
+ return -EINVAL;
+ }
+
+ gpio = of_get_gpio_flags(node, 0, &flags);
+ if (gpio < 0) {
+ dev_err(&client->dev, "Error getting GPIO\n");
+ return -EINVAL;
+ }
+
+ pd->power_gpio = gpio;
+ return 0;
+}
+
+
static int adp1653_probe(struct i2c_client *client,
const struct i2c_device_id *devid)
{
struct adp1653_flash *flash;
int ret;
- /* we couldn't work without platform data */
- if (client->dev.platform_data == NULL)
- return -ENODEV;
-
flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
if (flash == NULL)
return -ENOMEM;
flash->platform_data = client->dev.platform_data;
+ if (!flash->platform_data) {
+ ret = adp1653_of_init(client, flash, client->dev.of_node);
+ if (ret)
+ return ret;
+ }
mutex_init(&flash->power_lock);
diff --git a/include/media/adp1653.h b/include/media/adp1653.h
index 1d9b48a..b556580 100644
--- a/include/media/adp1653.h
+++ b/include/media/adp1653.h
@@ -100,9 +100,11 @@ struct adp1653_platform_data {
int (*power)(struct v4l2_subdev *sd, int on);
u32 max_flash_timeout; /* flash light timeout in us */
- u32 max_flash_intensity; /* led intensity, flash mode */
- u32 max_torch_intensity; /* led intensity, torch mode */
- u32 max_indicator_intensity; /* indicator led intensity */
+ u32 max_flash_intensity; /* led intensity, flash mode, mA */
+ u32 max_torch_intensity; /* led intensity, torch mode, mA */
+ u32 max_indicator_intensity; /* indicator led intensity, uA */
+
+ int power_gpio; /* for device-tree based boot */
};
#define to_adp1653_flash(sd) container_of(sd, struct adp1653_flash, subdev)
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
Em Wed, 3 Dec 2014 22:46:41 +0100
Pavel Machek <[email protected]> escreveu:
>
> We are moving to device tree support on OMAP3, but that currently
> breaks ADP1653 driver. This adds device tree support, plus required
> documentation.
>
> Signed-off-by: Pavel Machek <[email protected]>
Please be sure to check your patch with checkpatch. There are several
issues on it:
WARNING: DT compatible string "adi,adp1653" appears un-documented -- check ./Documentation/devicetree/bindings/
#78: FILE: arch/arm/boot/dts/omap3-n900.dts:572:
+ compatible = "adi,adp1653";
ERROR: trailing whitespace
#136: FILE: drivers/media/i2c/adp1653.c:332:
+^I^I^I$
ERROR: trailing whitespace
#159: FILE: drivers/media/i2c/adp1653.c:436:
+static int adp1653_of_init(struct i2c_client *client, struct adp1653_flash *flash, $
WARNING: line over 80 characters
#159: FILE: drivers/media/i2c/adp1653.c:436:
+static int adp1653_of_init(struct i2c_client *client, struct adp1653_flash *flash,
ERROR: trailing statements should be on next line
#177: FILE: drivers/media/i2c/adp1653.c:454:
+ if (!child) return -EINVAL;
WARNING: line over 80 characters
#178: FILE: drivers/media/i2c/adp1653.c:455:
+ if (of_property_read_u32(child, "flash-timeout-microsec", &val)) return -EINVAL;
ERROR: trailing statements should be on next line
#178: FILE: drivers/media/i2c/adp1653.c:455:
+ if (of_property_read_u32(child, "flash-timeout-microsec", &val)) return -EINVAL;
WARNING: line over 80 characters
#180: FILE: drivers/media/i2c/adp1653.c:457:
+ if (of_property_read_u32(child, "flash-max-microamp", &val)) return -EINVAL;
ERROR: trailing statements should be on next line
#180: FILE: drivers/media/i2c/adp1653.c:457:
+ if (of_property_read_u32(child, "flash-max-microamp", &val)) return -EINVAL;
ERROR: trailing statements should be on next line
#182: FILE: drivers/media/i2c/adp1653.c:459:
+ if (of_property_read_u32(child, "max-microamp", &val)) return -EINVAL;
ERROR: trailing statements should be on next line
#186: FILE: drivers/media/i2c/adp1653.c:463:
+ if (!child) return -EINVAL;
ERROR: trailing statements should be on next line
#187: FILE: drivers/media/i2c/adp1653.c:464:
+ if (of_property_read_u32(child, "max-microamp", &val)) return -EINVAL;
ERROR: trailing whitespace
#197: FILE: drivers/media/i2c/adp1653.c:474:
+^I^Idev_err(&client->dev, "Error getting GPIO\n"); $
total: 9 errors, 4 warnings, 199 lines checked
NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or
scripts/cleanfile
>
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/adp1653.txt
> @@ -0,0 +1,38 @@
> +* Analog Devices ADP1653 flash LED driver
> +
> +Required Properties:
> +
> + - compatible: Must contain one of the following
> + - "adi,adp1653"
> +
> + - reg: I2C slave address
> +
> + - gpios: References to the GPIO that controls the power for the chip.
> +
> +There are two led outputs available - flash and indicator. One led is
> +represented by one child node, nodes need to be named "flash" and "indicator".
> +
> +Required properties of the LED child node:
> +- max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> +
> +Required properties of the flash LED child node:
> +
> +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> +- flash-timeout-microsec : see Documentation/devicetree/bindings/leds/common.txt
> +
> +Example:
> +
> + adp1653: led-controller@30 {
> + compatible = "adi,adp1653";
> + reg = <0x30>;
> + gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
> +
> + flash {
> + flash-timeout-microsec = <500000>;
> + flash-max-microamp = <320000>;
> + max-microamp = <50000>;
> + };
> + indicator {
> + max-microamp = <17500>;
> + };
> + };
> diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts
> index cfddc3d..11d8afd 100644
> --- a/arch/arm/boot/dts/omap3-n900.dts
> +++ b/arch/arm/boot/dts/omap3-n900.dts
> @@ -560,6 +567,22 @@
>
> ti,usb-charger-detection = <&isp1704>;
> };
> +
> + adp1653: led-controller@30 {
> + compatible = "adi,adp1653";
> + reg = <0x30>;
> + gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
> +
> + flash {
> + flash-timeout-microsec = <500000>;
> + flash-max-microamp = <320000>;
> + max-microamp = <50000>;
> + };
> +
> + indicator {
> + max-microamp = <17500>;
> + };
> + };
> };
>
> &i2c3 {
> diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c
> index 873fe19..62601b2 100644
> --- a/drivers/media/i2c/adp1653.c
> +++ b/drivers/media/i2c/adp1653.c
> @@ -8,6 +8,7 @@
> * Contributors:
> * Sakari Ailus <[email protected]>
> * Tuukka Toivonen <[email protected]>
> + * Pavel Machek <[email protected]>
> *
> * This program is free software; you can redistribute it and/or
> * modify it under the terms of the GNU General Public License
> @@ -34,9 +35,11 @@
> #include <linux/module.h>
> #include <linux/i2c.h>
> #include <linux/slab.h>
> +#include <linux/of_gpio.h>
> +#include <linux/gpio.h>
> #include <media/adp1653.h>
> #include <media/v4l2-device.h>
>
> #define TIMEOUT_MAX 820000
> #define TIMEOUT_STEP 54600
> #define TIMEOUT_MIN (TIMEOUT_MAX - ADP1653_REG_CONFIG_TMR_SET_MAX \
> @@ -306,9 +318,18 @@ adp1653_init_device(struct adp1653_flash *flash)
> static int
> __adp1653_set_power(struct adp1653_flash *flash, int on)
> {
> - int ret;
> + int ret = 0;
>
> - ret = flash->platform_data->power(&flash->subdev, on);
> + if (flash->platform_data->power)
> + ret = flash->platform_data->power(&flash->subdev, on);
> + else {
> + gpio_set_value(flash->platform_data->power_gpio, on);
> + if (on) {
> + /* Some delay is apparently required. */
> + udelay(20);
> + }
> + }
> +
> if (ret < 0)
> return ret;
>
> @@ -316,8 +337,13 @@ __adp1653_set_power(struct adp1653_flash *flash, int on)
> return 0;
>
> ret = adp1653_init_device(flash);
> - if (ret < 0)
> + if (ret >= 0)
> + return ret;
> +
> + if (flash->platform_data->power)
> flash->platform_data->power(&flash->subdev, 0);
> + else
> + gpio_set_value(flash->platform_data->power_gpio, 0);
>
> return ret;
> }
> @@ -407,21 +433,69 @@ static int adp1653_resume(struct device *dev)
>
> #endif /* CONFIG_PM */
>
> +static int adp1653_of_init(struct i2c_client *client, struct adp1653_flash *flash,
> + struct device_node *node)
> +{
> + u32 val;
> + struct adp1653_platform_data *pd;
> + enum of_gpio_flags flags;
> + int gpio;
> + struct device_node *child;
> +
> + if (!node)
> + return -EINVAL;
> +
> + pd = devm_kzalloc(&client->dev, sizeof(*pd), GFP_KERNEL);
> + if (!pd)
> + return -ENOMEM;
> + flash->platform_data = pd;
> +
> + child = of_get_child_by_name(node, "flash");
> + if (!child) return -EINVAL;
One statement per line, please. Same for other lines below.
> + if (of_property_read_u32(child, "flash-timeout-microsec", &val)) return -EINVAL;
> + pd->max_flash_timeout = val;
> + if (of_property_read_u32(child, "flash-max-microamp", &val)) return -EINVAL;
> + pd->max_flash_intensity = val/1000;
> + if (of_property_read_u32(child, "max-microamp", &val)) return -EINVAL;
> + pd->max_torch_intensity = val/1000;
> +
> + child = of_get_child_by_name(node, "indicator");
> + if (!child) return -EINVAL;
> + if (of_property_read_u32(child, "max-microamp", &val)) return -EINVAL;
> + pd->max_indicator_intensity = val;
> +
> + if (!of_find_property(node, "gpios", NULL)) {
> + dev_err(&client->dev, "No gpio node\n");
> + return -EINVAL;
> + }
> +
> + gpio = of_get_gpio_flags(node, 0, &flags);
> + if (gpio < 0) {
> + dev_err(&client->dev, "Error getting GPIO\n");
> + return -EINVAL;
> + }
> +
> + pd->power_gpio = gpio;
> + return 0;
> +}
> +
> +
> static int adp1653_probe(struct i2c_client *client,
> const struct i2c_device_id *devid)
> {
> struct adp1653_flash *flash;
> int ret;
>
> - /* we couldn't work without platform data */
> - if (client->dev.platform_data == NULL)
> - return -ENODEV;
> -
> flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
> if (flash == NULL)
> return -ENOMEM;
>
> flash->platform_data = client->dev.platform_data;
> + if (!flash->platform_data) {
> + ret = adp1653_of_init(client, flash, client->dev.of_node);
> + if (ret)
> + return ret;
> + }
>
> mutex_init(&flash->power_lock);
>
> diff --git a/include/media/adp1653.h b/include/media/adp1653.h
> index 1d9b48a..b556580 100644
> --- a/include/media/adp1653.h
> +++ b/include/media/adp1653.h
> @@ -100,9 +100,11 @@ struct adp1653_platform_data {
> int (*power)(struct v4l2_subdev *sd, int on);
>
> u32 max_flash_timeout; /* flash light timeout in us */
> - u32 max_flash_intensity; /* led intensity, flash mode */
> - u32 max_torch_intensity; /* led intensity, torch mode */
> - u32 max_indicator_intensity; /* indicator led intensity */
> + u32 max_flash_intensity; /* led intensity, flash mode, mA */
> + u32 max_torch_intensity; /* led intensity, torch mode, mA */
> + u32 max_indicator_intensity; /* indicator led intensity, uA */
> +
> + int power_gpio; /* for device-tree based boot */
> };
>
> #define to_adp1653_flash(sd) container_of(sd, struct adp1653_flash, subdev)
>
--
Cheers,
Mauro
On Tue 2014-12-23 15:23:25, Mauro Carvalho Chehab wrote:
> Em Wed, 3 Dec 2014 22:46:41 +0100
> Pavel Machek <[email protected]> escreveu:
>
> >
> > We are moving to device tree support on OMAP3, but that currently
> > breaks ADP1653 driver. This adds device tree support, plus required
> > documentation.
> >
> > Signed-off-by: Pavel Machek <[email protected]>
>
> Please be sure to check your patch with checkpatch. There are several
> issues on it:
> WARNING: DT compatible string "adi,adp1653" appears un-documented -- check ./Documentation/devicetree/bindings/
> #78: FILE: arch/arm/boot/dts/omap3-n900.dts:572:
> + compatible = "adi,adp1653";
Hmm. Take a look at part quoted below. Someone needs to fix
checkpatch. Ccing authors.
> ERROR: trailing whitespace
> WARNING: line over 80 characters
Will fix.
> ERROR: trailing statements should be on next line
> #177: FILE: drivers/media/i2c/adp1653.c:454:
> + if (!child) return -EINVAL;
I actually did these on purporse... the function is trivial, and by
keeping returns on one line it fits into screen. I see you want it
fixed below, so I'll do that for next version.
Pavel
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/i2c/adp1653.txt
> > @@ -0,0 +1,38 @@
> > +* Analog Devices ADP1653 flash LED driver
> > +
> > +Required Properties:
> > +
> > + - compatible: Must contain one of the following
> > + - "adi,adp1653"
> > +
> > + - reg: I2C slave address
> > +
> > + - gpios: References to the GPIO that controls the power for the chip.
> > +
> > +There are two led outputs available - flash and indicator. One led is
> > +represented by one child node, nodes need to be named "flash" and "indicator".
> > +
> > +Required properties of the LED child node:
> > +- max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> > +
> > +Required properties of the flash LED child node:
> > +
> > +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> > +- flash-timeout-microsec : see Documentation/devicetree/bindings/leds/common.txt
> > +
> > +Example:
> > +
> > + adp1653: led-controller@30 {
> > + compatible = "adi,adp1653";
> > + reg = <0x30>;
> > + gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
> > +
> > + flash {
> > + flash-timeout-microsec = <500000>;
> > + flash-max-microamp = <320000>;
> > + max-microamp = <50000>;
> > + };
> > + indicator {
> > + max-microamp = <17500>;
> > + };
> > + };
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
We are moving to device tree support on OMAP3, but that currently
breaks ADP1653 driver. This adds device tree support, plus required
documentation.
Signed-off-by: Pavel Machek <[email protected]>
---
Changed -microsec to -us, as requested by devicetree people.
Fixed checkpatch issues.
diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
index 2d88816..2c6c7c5 100644
--- a/Documentation/devicetree/bindings/leds/common.txt
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -14,6 +14,15 @@ Optional properties for child nodes:
"ide-disk" - LED indicates disk activity
"timer" - LED flashes at a fixed, configurable rate
+- max-microamp : maximum intensity in microamperes of the LED
+ (torch LED for flash devices)
+- flash-max-microamp : maximum intensity in microamperes of the
+ flash LED; it is mandatory if the LED should
+ support the flash mode
+- flash-timeout-microsec : timeout in microseconds after which the flash
+ LED is turned off
+
+
Examples:
system-status {
@@ -21,3 +30,10 @@ system-status {
linux,default-trigger = "heartbeat";
...
};
+
+camera-flash {
+ label = "Flash";
+ max-microamp = <50000>;
+ flash-max-microamp = <320000>;
+ flash-timeout-microsec = <500000>;
+}
diff --git a/Documentation/devicetree/bindings/media/i2c/adp1653.txt b/Documentation/devicetree/bindings/media/i2c/adp1653.txt
new file mode 100644
index 0000000..3c7065f
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/adp1653.txt
@@ -0,0 +1,38 @@
+* Analog Devices ADP1653 flash LED driver
+
+Required Properties:
+
+ - compatible: Must contain one of the following
+ - "adi,adp1653"
+
+ - reg: I2C slave address
+
+ - gpios: References to the GPIO that controls the power for the chip.
+
+There are two led outputs available - flash and indicator. One led is
+represented by one child node, nodes need to be named "flash" and "indicator".
+
+Required properties of the LED child node:
+- max-microamp : see Documentation/devicetree/bindings/leds/common.txt
+
+Required properties of the flash LED child node:
+
+- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
+- flash-timeout-us : see Documentation/devicetree/bindings/leds/common.txt
+
+Example:
+
+ adp1653: led-controller@30 {
+ compatible = "adi,adp1653";
+ reg = <0x30>;
+ gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
+
+ flash {
+ flash-timeout-us = <500000>;
+ flash-max-microamp = <320000>;
+ max-microamp = <50000>;
+ };
+ indicator {
+ max-microamp = <17500>;
+ };
+ };
diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts
index bc82a12..d04e7cc 100644
--- a/arch/arm/boot/dts/omap3-n900.dts
+++ b/arch/arm/boot/dts/omap3-n900.dts
@@ -553,6 +558,22 @@
ti,usb-charger-detection = <&isp1704>;
};
+
+ adp1653: led-controller@30 {
+ compatible = "adi,adp1653";
+ reg = <0x30>;
+ gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
+
+ flash {
+ flash-timeout-us = <500000>;
+ flash-max-microamp = <320000>;
+ max-microamp = <50000>;
+ };
+
+ indicator {
+ max-microamp = <17500>;
+ };
+ };
};
&i2c3 {
diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c
index 873fe19..78341d0 100644
--- a/drivers/media/i2c/adp1653.c
+++ b/drivers/media/i2c/adp1653.c
@@ -8,6 +8,7 @@
* Contributors:
* Sakari Ailus <[email protected]>
* Tuukka Toivonen <[email protected]>
+ * Pavel Machek <[email protected]>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
@@ -34,9 +35,12 @@
#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/slab.h>
+#include <linux/of_gpio.h>
#include <media/adp1653.h>
#include <media/v4l2-device.h>
+#include <linux/gpio.h>
+
#define TIMEOUT_MAX 820000
#define TIMEOUT_STEP 54600
#define TIMEOUT_MIN (TIMEOUT_MAX - ADP1653_REG_CONFIG_TMR_SET_MAX \
@@ -306,9 +318,18 @@ adp1653_init_device(struct adp1653_flash *flash)
static int
__adp1653_set_power(struct adp1653_flash *flash, int on)
{
- int ret;
+ int ret = 0;
+
+ if (flash->platform_data->power)
+ ret = flash->platform_data->power(&flash->subdev, on);
+ else {
+ gpio_set_value(flash->platform_data->power_gpio, on);
+ if (on) {
+ /* Some delay is apparently required. */
+ udelay(20);
+ }
+ }
- ret = flash->platform_data->power(&flash->subdev, on);
if (ret < 0)
return ret;
@@ -316,8 +337,13 @@ __adp1653_set_power(struct adp1653_flash *flash, int on)
return 0;
ret = adp1653_init_device(flash);
- if (ret < 0)
+ if (ret >= 0)
+ return ret;
+
+ if (flash->platform_data->power)
flash->platform_data->power(&flash->subdev, 0);
+ else
+ gpio_set_value(flash->platform_data->power_gpio, 0);
return ret;
}
@@ -407,21 +433,78 @@ static int adp1653_resume(struct device *dev)
#endif /* CONFIG_PM */
+static int adp1653_of_init(struct i2c_client *client,
+ struct adp1653_flash *flash,
+ struct device_node *node)
+{
+ u32 val;
+ struct adp1653_platform_data *pd;
+ enum of_gpio_flags flags;
+ int gpio;
+ struct device_node *child;
+
+ if (!node)
+ return -EINVAL;
+
+ pd = devm_kzalloc(&client->dev, sizeof(*pd), GFP_KERNEL);
+ if (!pd)
+ return -ENOMEM;
+ flash->platform_data = pd;
+
+ child = of_get_child_by_name(node, "flash");
+ if (!child)
+ return -EINVAL;
+ if (of_property_read_u32(child, "flash-timeout-microsec", &val))
+ return -EINVAL;
+
+ pd->max_flash_timeout = val;
+ if (of_property_read_u32(child, "flash-max-microamp", &val))
+ return -EINVAL;
+ pd->max_flash_intensity = val/1000;
+
+ if (of_property_read_u32(child, "max-microamp", &val))
+ return -EINVAL;
+ pd->max_torch_intensity = val/1000;
+
+ child = of_get_child_by_name(node, "indicator");
+ if (!child)
+ return -EINVAL;
+ if (of_property_read_u32(child, "max-microamp", &val))
+ return -EINVAL;
+ pd->max_indicator_intensity = val;
+
+ if (!of_find_property(node, "gpios", NULL)) {
+ dev_err(&client->dev, "No gpio node\n");
+ return -EINVAL;
+ }
+
+ gpio = of_get_gpio_flags(node, 0, &flags);
+ if (gpio < 0) {
+ dev_err(&client->dev, "Error getting GPIO\n");
+ return -EINVAL;
+ }
+
+ pd->power_gpio = gpio;
+ return 0;
+}
+
+
static int adp1653_probe(struct i2c_client *client,
const struct i2c_device_id *devid)
{
struct adp1653_flash *flash;
int ret;
- /* we couldn't work without platform data */
- if (client->dev.platform_data == NULL)
- return -ENODEV;
-
flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
if (flash == NULL)
return -ENOMEM;
flash->platform_data = client->dev.platform_data;
+ if (!flash->platform_data) {
+ ret = adp1653_of_init(client, flash, client->dev.of_node);
+ if (ret)
+ return ret;
+ }
mutex_init(&flash->power_lock);
@@ -438,10 +521,11 @@ static int adp1653_probe(struct i2c_client *client,
goto free_and_quit;
flash->subdev.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
-
+
return 0;
free_and_quit:
+ dev_err(&client->dev, "adp1653: failed to register device\n");
v4l2_ctrl_handler_free(&flash->ctrls);
return ret;
}
@@ -464,7 +551,7 @@ static const struct i2c_device_id adp1653_id_table[] = {
};
MODULE_DEVICE_TABLE(i2c, adp1653_id_table);
-static struct dev_pm_ops adp1653_pm_ops = {
+static const struct dev_pm_ops adp1653_pm_ops = {
.suspend = adp1653_suspend,
.resume = adp1653_resume,
};
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
On Tue 2014-12-23 21:49:04, Pavel Machek wrote:
> On Tue 2014-12-23 15:23:25, Mauro Carvalho Chehab wrote:
> > Em Wed, 3 Dec 2014 22:46:41 +0100
> > Pavel Machek <[email protected]> escreveu:
> >
> > >
> > > We are moving to device tree support on OMAP3, but that currently
> > > breaks ADP1653 driver. This adds device tree support, plus required
> > > documentation.
> > >
> > > Signed-off-by: Pavel Machek <[email protected]>
> >
> > Please be sure to check your patch with checkpatch. There are several
> > issues on it:
Ok, you should have fixed version in your inbox.
Happy holidays!
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
On Wed, Dec 24, 2014 at 4:34 PM, Pavel Machek <[email protected]> wrote:
>
> We are moving to device tree support on OMAP3, but that currently
> breaks ADP1653 driver. This adds device tree support, plus required
> documentation.
>
> Signed-off-by: Pavel Machek <[email protected]>
>
> ---
>
> Changed -microsec to -us, as requested by devicetree people.
>
> Fixed checkpatch issues.
>
> diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
> index 2d88816..2c6c7c5 100644
> --- a/Documentation/devicetree/bindings/leds/common.txt
> +++ b/Documentation/devicetree/bindings/leds/common.txt
> @@ -14,6 +14,15 @@ Optional properties for child nodes:
> "ide-disk" - LED indicates disk activity
> "timer" - LED flashes at a fixed, configurable rate
>
> +- max-microamp : maximum intensity in microamperes of the LED
> + (torch LED for flash devices)
> +- flash-max-microamp : maximum intensity in microamperes of the
> + flash LED; it is mandatory if the LED should
> + support the flash mode
> +- flash-timeout-microsec : timeout in microseconds after which the flash
> + LED is turned off
Doesn't all this go in your flash led binding patch?
> +
> +
> Examples:
>
> system-status {
> @@ -21,3 +30,10 @@ system-status {
> linux,default-trigger = "heartbeat";
> ...
> };
> +
> +camera-flash {
> + label = "Flash";
> + max-microamp = <50000>;
> + flash-max-microamp = <320000>;
> + flash-timeout-microsec = <500000>;
> +}
> diff --git a/Documentation/devicetree/bindings/media/i2c/adp1653.txt b/Documentation/devicetree/bindings/media/i2c/adp1653.txt
> new file mode 100644
> index 0000000..3c7065f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/adp1653.txt
> @@ -0,0 +1,38 @@
> +* Analog Devices ADP1653 flash LED driver
> +
> +Required Properties:
> +
> + - compatible: Must contain one of the following
> + - "adi,adp1653"
> +
> + - reg: I2C slave address
> +
> + - gpios: References to the GPIO that controls the power for the chip.
> +
> +There are two led outputs available - flash and indicator. One led is
> +represented by one child node, nodes need to be named "flash" and "indicator".
> +
> +Required properties of the LED child node:
> +- max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> +
> +Required properties of the flash LED child node:
> +
> +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> +- flash-timeout-us : see Documentation/devicetree/bindings/leds/common.txt
> +
> +Example:
> +
> + adp1653: led-controller@30 {
> + compatible = "adi,adp1653";
> + reg = <0x30>;
> + gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
> +
> + flash {
> + flash-timeout-us = <500000>;
> + flash-max-microamp = <320000>;
> + max-microamp = <50000>;
> + };
> + indicator {
These are different LEDs or different modes?
> + max-microamp = <17500>;
This is a bit inconsistent. The binding says this is for flash LEDs
torch mode, but I see no reason why it can't be common. Can you update
the binding doc to be clear here.
Also, aren't you missing label properties?
Rob
Hi!
> > We are moving to device tree support on OMAP3, but that currently
> > breaks ADP1653 driver. This adds device tree support, plus required
> > documentation.
> >
> > Signed-off-by: Pavel Machek <[email protected]>
> >
> > ---
> >
> > Changed -microsec to -us, as requested by devicetree people.
> >
> > Fixed checkpatch issues.
> >
> > diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
> > index 2d88816..2c6c7c5 100644
> > --- a/Documentation/devicetree/bindings/leds/common.txt
> > +++ b/Documentation/devicetree/bindings/leds/common.txt
> > @@ -14,6 +14,15 @@ Optional properties for child nodes:
> > "ide-disk" - LED indicates disk activity
> > "timer" - LED flashes at a fixed, configurable rate
> >
> > +- max-microamp : maximum intensity in microamperes of the LED
> > + (torch LED for flash devices)
> > +- flash-max-microamp : maximum intensity in microamperes of the
> > + flash LED; it is mandatory if the LED should
> > + support the flash mode
> > +- flash-timeout-microsec : timeout in microseconds after which the flash
> > + LED is turned off
>
> Doesn't all this go in your flash led binding patch?
No, I should not have included this part.
> > +Example:
> > +
> > + adp1653: led-controller@30 {
> > + compatible = "adi,adp1653";
> > + reg = <0x30>;
> > + gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
> > +
> > + flash {
> > + flash-timeout-us = <500000>;
> > + flash-max-microamp = <320000>;
> > + max-microamp = <50000>;
> > + };
> > + indicator {
>
> These are different LEDs or different modes?
flash & indicator are different LEDs. One is white, one is red. Flash
can be used as a flash and as a torch.
> > + max-microamp = <17500>;
>
> This is a bit inconsistent. The binding says this is for flash LEDs
> torch mode, but I see no reason why it can't be common. Can you update
> the binding doc to be clear here.
By inconsisnent, you mean you want patch below?
> Also, aren't you missing label properties?
label is optional, and as my driver does not yet use it, I forgot
about it.
Signed-off-by: Pavel Machek <[email protected]>
index 2c6c7c5..92d4dac 100644
--- a/Documentation/devicetree/bindings/leds/common.txt
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -15,7 +15,6 @@ Optional properties for child nodes:
"timer" - LED flashes at a fixed, configurable rate
- max-microamp : maximum intensity in microamperes of the LED
- (torch LED for flash devices)
- flash-max-microamp : maximum intensity in microamperes of the
flash LED; it is mandatory if the LED should
support the flash mode
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
On Fri, Dec 26, 2014 at 2:33 PM, Pavel Machek <[email protected]> wrote:
> Hi!
>
>> > We are moving to device tree support on OMAP3, but that currently
>> > breaks ADP1653 driver. This adds device tree support, plus required
>> > documentation.
>> >
>> > Signed-off-by: Pavel Machek <[email protected]>
>> >
>> > ---
>> >
>> > Changed -microsec to -us, as requested by devicetree people.
>> >
>> > Fixed checkpatch issues.
>> >
>> > diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
>> > index 2d88816..2c6c7c5 100644
>> > --- a/Documentation/devicetree/bindings/leds/common.txt
>> > +++ b/Documentation/devicetree/bindings/leds/common.txt
>> > @@ -14,6 +14,15 @@ Optional properties for child nodes:
>> > "ide-disk" - LED indicates disk activity
>> > "timer" - LED flashes at a fixed, configurable rate
>> >
>> > +- max-microamp : maximum intensity in microamperes of the LED
>> > + (torch LED for flash devices)
>> > +- flash-max-microamp : maximum intensity in microamperes of the
>> > + flash LED; it is mandatory if the LED should
>> > + support the flash mode
>> > +- flash-timeout-microsec : timeout in microseconds after which the flash
>> > + LED is turned off
>>
>> Doesn't all this go in your flash led binding patch?
>
> No, I should not have included this part.
>
>> > +Example:
>> > +
>> > + adp1653: led-controller@30 {
>> > + compatible = "adi,adp1653";
>> > + reg = <0x30>;
>> > + gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
>> > +
>> > + flash {
>> > + flash-timeout-us = <500000>;
>> > + flash-max-microamp = <320000>;
>> > + max-microamp = <50000>;
>> > + };
>> > + indicator {
>>
>> These are different LEDs or different modes?
>
> flash & indicator are different LEDs. One is white, one is red. Flash
> can be used as a flash and as a torch.
>
>> > + max-microamp = <17500>;
>>
>> This is a bit inconsistent. The binding says this is for flash LEDs
>> torch mode, but I see no reason why it can't be common. Can you update
>> the binding doc to be clear here.
>
> By inconsisnent, you mean you want patch below?
Yes.
>> Also, aren't you missing label properties?
>
> label is optional, and as my driver does not yet use it, I forgot
> about it.
Based on your node names, there are obviously user defined functions
for them already. So they should have labels whether or not the driver
uses them.
Rob
> Signed-off-by: Pavel Machek <[email protected]>
>
> index 2c6c7c5..92d4dac 100644
> --- a/Documentation/devicetree/bindings/leds/common.txt
> +++ b/Documentation/devicetree/bindings/leds/common.txt
> @@ -15,7 +15,6 @@ Optional properties for child nodes:
> "timer" - LED flashes at a fixed, configurable rate
>
> - max-microamp : maximum intensity in microamperes of the LED
> - (torch LED for flash devices)
> - flash-max-microamp : maximum intensity in microamperes of the
> flash LED; it is mandatory if the LED should
> support the flash mode
>
>
> --
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
Hi Pavel,
Thanks for the patch! A few comments below.
On Wed, Dec 24, 2014 at 11:34:34PM +0100, Pavel Machek wrote:
>
> We are moving to device tree support on OMAP3, but that currently
> breaks ADP1653 driver. This adds device tree support, plus required
> documentation.
>
> Signed-off-by: Pavel Machek <[email protected]>
>
> ---
>
> Changed -microsec to -us, as requested by devicetree people.
>
> Fixed checkpatch issues.
>
> diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
> index 2d88816..2c6c7c5 100644
> --- a/Documentation/devicetree/bindings/leds/common.txt
> +++ b/Documentation/devicetree/bindings/leds/common.txt
> @@ -14,6 +14,15 @@ Optional properties for child nodes:
> "ide-disk" - LED indicates disk activity
> "timer" - LED flashes at a fixed, configurable rate
>
> +- max-microamp : maximum intensity in microamperes of the LED
> + (torch LED for flash devices)
s/torch LED/torch mode/
> +- flash-max-microamp : maximum intensity in microamperes of the
> + flash LED; it is mandatory if the LED should
> + support the flash mode
> +- flash-timeout-microsec : timeout in microseconds after which the flash
> + LED is turned off
These should go to a different patch.
> +
> +
> Examples:
>
> system-status {
> @@ -21,3 +30,10 @@ system-status {
> linux,default-trigger = "heartbeat";
> ...
> };
> +
> +camera-flash {
> + label = "Flash";
> + max-microamp = <50000>;
> + flash-max-microamp = <320000>;
> + flash-timeout-microsec = <500000>;
> +}
> diff --git a/Documentation/devicetree/bindings/media/i2c/adp1653.txt b/Documentation/devicetree/bindings/media/i2c/adp1653.txt
> new file mode 100644
> index 0000000..3c7065f
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/adp1653.txt
> @@ -0,0 +1,38 @@
> +* Analog Devices ADP1653 flash LED driver
> +
> +Required Properties:
> +
> + - compatible: Must contain one of the following
> + - "adi,adp1653"
I doubt whether there are going to be more chips supported with the driver.
There hasn't been since the driver was written not I'm aware of one now.
> + - reg: I2C slave address
> +
> + - gpios: References to the GPIO that controls the power for the chip.
> +
> +There are two led outputs available - flash and indicator. One led is
> +represented by one child node, nodes need to be named "flash" and "indicator".
80 characters per line.
> +
> +Required properties of the LED child node:
> +- max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> +
> +Required properties of the flash LED child node:
> +
> +- flash-max-microamp : see Documentation/devicetree/bindings/leds/common.txt
> +- flash-timeout-us : see Documentation/devicetree/bindings/leds/common.txt
> +
> +Example:
> +
> + adp1653: led-controller@30 {
> + compatible = "adi,adp1653";
> + reg = <0x30>;
> + gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
Please use tabs for indentation above (and below).
> +
> + flash {
> + flash-timeout-us = <500000>;
> + flash-max-microamp = <320000>;
> + max-microamp = <50000>;
> + };
> + indicator {
> + max-microamp = <17500>;
> + };
> + };
> diff --git a/arch/arm/boot/dts/omap3-n900.dts b/arch/arm/boot/dts/omap3-n900.dts
> index bc82a12..d04e7cc 100644
> --- a/arch/arm/boot/dts/omap3-n900.dts
> +++ b/arch/arm/boot/dts/omap3-n900.dts
> @@ -553,6 +558,22 @@
>
> ti,usb-charger-detection = <&isp1704>;
> };
> +
> + adp1653: led-controller@30 {
> + compatible = "adi,adp1653";
> + reg = <0x30>;
> + gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>; /* 88 */
> +
> + flash {
> + flash-timeout-us = <500000>;
> + flash-max-microamp = <320000>;
> + max-microamp = <50000>;
> + };
> +
> + indicator {
> + max-microamp = <17500>;
> + };
> + };
This should go to a separate patch as well.
> };
>
> &i2c3 {
> diff --git a/drivers/media/i2c/adp1653.c b/drivers/media/i2c/adp1653.c
> index 873fe19..78341d0 100644
> --- a/drivers/media/i2c/adp1653.c
> +++ b/drivers/media/i2c/adp1653.c
> @@ -8,6 +8,7 @@
> * Contributors:
> * Sakari Ailus <[email protected]>
> * Tuukka Toivonen <[email protected]>
> + * Pavel Machek <[email protected]>
> *
> * This program is free software; you can redistribute it and/or
> * modify it under the terms of the GNU General Public License
> @@ -34,9 +35,12 @@
> #include <linux/module.h>
> #include <linux/i2c.h>
> #include <linux/slab.h>
> +#include <linux/of_gpio.h>
> #include <media/adp1653.h>
> #include <media/v4l2-device.h>
>
> +#include <linux/gpio.h>
Please arrange along with the rest of headers.
> +
> #define TIMEOUT_MAX 820000
> #define TIMEOUT_STEP 54600
> #define TIMEOUT_MIN (TIMEOUT_MAX - ADP1653_REG_CONFIG_TMR_SET_MAX \
> @@ -306,9 +318,18 @@ adp1653_init_device(struct adp1653_flash *flash)
> static int
> __adp1653_set_power(struct adp1653_flash *flash, int on)
> {
> - int ret;
> + int ret = 0;
> +
> + if (flash->platform_data->power)
> + ret = flash->platform_data->power(&flash->subdev, on);
if () {
} else {
}
> + else {
> + gpio_set_value(flash->platform_data->power_gpio, on);
Shouldn't you add this to the platform data struct?
power_gpio is actually a poor name for this, as is the "power" callback.
This is really "EN" gpio in the spec, I'd call it perhaps just "gpio", or
"enable_gpio".
> + if (on) {
> + /* Some delay is apparently required. */
> + udelay(20);
The driver should always handle the delay, platform data or not. This
reminds me --- is there a need to retain the support for platform data? I
don't think it's being used anywhere. I'm fine with both keeping and
removing it.
> + }
> + }
>
> - ret = flash->platform_data->power(&flash->subdev, on);
> if (ret < 0)
> return ret;
>
> @@ -316,8 +337,13 @@ __adp1653_set_power(struct adp1653_flash *flash, int on)
> return 0;
>
> ret = adp1653_init_device(flash);
> - if (ret < 0)
> + if (ret >= 0)
> + return ret;
> +
> + if (flash->platform_data->power)
> flash->platform_data->power(&flash->subdev, 0);
> + else
> + gpio_set_value(flash->platform_data->power_gpio, 0);
>
> return ret;
> }
> @@ -407,21 +433,78 @@ static int adp1653_resume(struct device *dev)
>
> #endif /* CONFIG_PM */
>
> +static int adp1653_of_init(struct i2c_client *client,
> + struct adp1653_flash *flash,
> + struct device_node *node)
> +{
> + u32 val;
> + struct adp1653_platform_data *pd;
> + enum of_gpio_flags flags;
> + int gpio;
> + struct device_node *child;
> +
> + if (!node)
> + return -EINVAL;
> +
> + pd = devm_kzalloc(&client->dev, sizeof(*pd), GFP_KERNEL);
> + if (!pd)
> + return -ENOMEM;
> + flash->platform_data = pd;
> +
> + child = of_get_child_by_name(node, "flash");
> + if (!child)
> + return -EINVAL;
> + if (of_property_read_u32(child, "flash-timeout-microsec", &val))
> + return -EINVAL;
> +
> + pd->max_flash_timeout = val;
> + if (of_property_read_u32(child, "flash-max-microamp", &val))
> + return -EINVAL;
> + pd->max_flash_intensity = val/1000;
> +
> + if (of_property_read_u32(child, "max-microamp", &val))
> + return -EINVAL;
> + pd->max_torch_intensity = val/1000;
> +
> + child = of_get_child_by_name(node, "indicator");
> + if (!child)
> + return -EINVAL;
Do you require an indicator to be connected? I think it shouldn't be
mandatory, at least the driver should work without it, even if it exposes
the control (making that conditional would be a subject for another patch,
but that doesn't need to be done now).
> + if (of_property_read_u32(child, "max-microamp", &val))
> + return -EINVAL;
> + pd->max_indicator_intensity = val;
> +
> + if (!of_find_property(node, "gpios", NULL)) {
> + dev_err(&client->dev, "No gpio node\n");
> + return -EINVAL;
> + }
> +
> + gpio = of_get_gpio_flags(node, 0, &flags);
You could assign to pd->... here.
> + if (gpio < 0) {
> + dev_err(&client->dev, "Error getting GPIO\n");
> + return -EINVAL;
> + }
> +
> + pd->power_gpio = gpio;
> + return 0;
> +}
> +
> +
> static int adp1653_probe(struct i2c_client *client,
> const struct i2c_device_id *devid)
> {
> struct adp1653_flash *flash;
> int ret;
>
> - /* we couldn't work without platform data */
> - if (client->dev.platform_data == NULL)
> - return -ENODEV;
> -
> flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
> if (flash == NULL)
> return -ENOMEM;
>
> flash->platform_data = client->dev.platform_data;
> + if (!flash->platform_data) {
> + ret = adp1653_of_init(client, flash, client->dev.of_node);
> + if (ret)
> + return ret;
> + }
>
> mutex_init(&flash->power_lock);
>
> @@ -438,10 +521,11 @@ static int adp1653_probe(struct i2c_client *client,
> goto free_and_quit;
>
> flash->subdev.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_FLASH;
> -
> +
Huh? :-)
> return 0;
>
> free_and_quit:
> + dev_err(&client->dev, "adp1653: failed to register device\n");
> v4l2_ctrl_handler_free(&flash->ctrls);
> return ret;
> }
> @@ -464,7 +551,7 @@ static const struct i2c_device_id adp1653_id_table[] = {
> };
> MODULE_DEVICE_TABLE(i2c, adp1653_id_table);
>
> -static struct dev_pm_ops adp1653_pm_ops = {
> +static const struct dev_pm_ops adp1653_pm_ops = {
> .suspend = adp1653_suspend,
> .resume = adp1653_resume,
> };
>
>
--
Kind regards,
Sakari Ailus
e-mail: [email protected] XMPP: [email protected]