| Message ID | 20141224223434.GA20669@amd (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Dec 24, 2014 at 4:34 PM, Pavel Machek <pavel@ucw.cz> 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 <pavel@ucw.cz> > > --- > > 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 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.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 <pavel@ucw.cz> > > --- > > 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 <sakari.ailus@iki.fi> > * Tuukka Toivonen <tuukkat76@gmail.com> > + * Pavel Machek <pavel@ucw.cz> > * > * 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, > }; > >
Hi! > 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 <pavel@ucw.cz> > > > > --- > > > > 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. Actually these both should not be in this patch in the first place. > > + - 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. Count them. It is. > > + > > +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). Ok. > > --- 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. How many patches do I need to do for one trivial change? :-(. > > + if (flash->platform_data->power) > > + ret = flash->platform_data->power(&flash->subdev, on); > > if () { > } else { > } Ok. > > + else { > > + gpio_set_value(flash->platform_data->power_gpio, on); > > Shouldn't you add this to the platform data struct? I don't see what you mean. > 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". Feel free to clean that that up in followup patch. > > + 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. Lets do that in followup patch, if needed. > > + 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). Another patch, if someone needs it, yes. > > + 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. Ok. Pavel
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 <sakari.ailus@iki.fi> * Tuukka Toivonen <tuukkat76@gmail.com> + * Pavel Machek <pavel@ucw.cz> * * 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, };
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 <pavel@ucw.cz> --- Changed -microsec to -us, as requested by devicetree people. Fixed checkpatch issues.