From: Lad, Prabhakar <[email protected]>
add OF support for the mt9p031 sensor driver.
Alongside this patch sorts the header inclusion alphabetically.
Signed-off-by: Lad, Prabhakar <[email protected]>
Cc: Hans Verkuil <[email protected]>
Cc: Laurent Pinchart <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Guennadi Liakhovetski <[email protected]>
Cc: Sylwester Nawrocki <[email protected]>
Cc: Sakari Ailus <[email protected]>
Cc: Grant Likely <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: Rob Herring <[email protected]>
Cc: Rob Landley <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
---
Changes for NON RFC v1:
1: added missing call for of_node_put().
Changes for RFC v4 (https://patchwork.kernel.org/patch/2556251/):
1: Renamed "gpio-reset" property to "reset-gpios".
2: Dropped assigning the driver data from the of node.
Changes for RFC v3(https://patchwork.kernel.org/patch/2515921/):
1: Dropped check if gpio-reset is valid.
2: Fixed some code nits.
3: Included a reference to the V4L2 DT bindings documentation.
Changes for RFC v2 (https://patchwork.kernel.org/patch/2510201/):
1: Used '-' instead of '_' for device properties.
2: Specified gpio reset pin as phandle in device node.
3: Handle platform data properly even if kernel is compiled with
devicetree support.
4: Used dev_* for messages in drivers instead of pr_*.
5: Changed compatible property to "aptina,mt9p031" and "aptina,mt9p031m".
6: Sorted the header inclusion alphabetically and fixed some minor code nits.
RFC v1: https://patchwork.kernel.org/patch/2498791/
.../devicetree/bindings/media/i2c/mt9p031.txt | 40 ++++++++++++++++++
drivers/media/i2c/mt9p031.c | 43 +++++++++++++++++++-
2 files changed, 81 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/i2c/mt9p031.txt
diff --git a/Documentation/devicetree/bindings/media/i2c/mt9p031.txt b/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
new file mode 100644
index 0000000..59d613c
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
@@ -0,0 +1,40 @@
+* Aptina 1/2.5-Inch 5Mp CMOS Digital Image Sensor
+
+The Aptina MT9P031 is a 1/2.5-inch CMOS active pixel digital image sensor with
+an active array size of 2592H x 1944V. It is programmable through a simple
+two-wire serial interface.
+
+Required Properties :
+- compatible : value should be either one among the following
+ (a) "aptina,mt9p031" for mt9p031 sensor
+ (b) "aptina,mt9p031m" for mt9p031m sensor
+
+- input-clock-frequency : Input clock frequency.
+
+- pixel-clock-frequency : Pixel clock frequency.
+
+Optional Properties :
+- reset-gpios: Chip reset GPIO
+
+For further reading of port node refer Documentation/devicetree/bindings/media/
+video-interfaces.txt.
+
+Example:
+
+ i2c0@1c22000 {
+ ...
+ ...
+ mt9p031@5d {
+ compatible = "aptina,mt9p031";
+ reg = <0x5d>;
+ reset-gpios = <&gpio3 30 0>;
+
+ port {
+ mt9p031_1: endpoint {
+ input-clock-frequency = <6000000>;
+ pixel-clock-frequency = <96000000>;
+ };
+ };
+ };
+ ...
+ };
diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c
index bf49899..bb1f993 100644
--- a/drivers/media/i2c/mt9p031.c
+++ b/drivers/media/i2c/mt9p031.c
@@ -16,9 +16,10 @@
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/gpio.h>
-#include <linux/module.h>
#include <linux/i2c.h>
#include <linux/log2.h>
+#include <linux/module.h>
+#include <linux/of_gpio.h>
#include <linux/pm.h>
#include <linux/regulator/consumer.h>
#include <linux/slab.h>
@@ -28,6 +29,7 @@
#include <media/v4l2-chip-ident.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
+#include <media/v4l2-of.h>
#include <media/v4l2-subdev.h>
#include "aptina-pll.h"
@@ -928,10 +930,37 @@ static const struct v4l2_subdev_internal_ops mt9p031_subdev_internal_ops = {
* Driver initialization and probing
*/
+static struct mt9p031_platform_data *
+mt9p031_get_pdata(struct i2c_client *client)
+{
+ struct mt9p031_platform_data *pdata = NULL;
+ struct device_node *np;
+
+ if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
+ return client->dev.platform_data;
+
+ np = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
+ if (!np)
+ return NULL;
+
+ pdata = devm_kzalloc(&client->dev, sizeof(struct mt9p031_platform_data),
+ GFP_KERNEL);
+ if (!pdata)
+ goto done;
+
+ pdata->reset = of_get_named_gpio(client->dev.of_node, "reset-gpios", 0);
+ of_property_read_u32(np, "input-clock-frequency", &pdata->ext_freq);
+ of_property_read_u32(np, "pixel-clock-frequency", &pdata->target_freq);
+
+done:
+ of_node_put(np);
+ return pdata;
+}
+
static int mt9p031_probe(struct i2c_client *client,
const struct i2c_device_id *did)
{
- struct mt9p031_platform_data *pdata = client->dev.platform_data;
+ struct mt9p031_platform_data *pdata = mt9p031_get_pdata(client);
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
struct mt9p031 *mt9p031;
unsigned int i;
@@ -1070,8 +1099,18 @@ static const struct i2c_device_id mt9p031_id[] = {
};
MODULE_DEVICE_TABLE(i2c, mt9p031_id);
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id mt9p031_of_match[] = {
+ { .compatible = "aptina,mt9p031", },
+ { .compatible = "aptina,mt9p031m", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, mt9p031_of_match);
+#endif
+
static struct i2c_driver mt9p031_i2c_driver = {
.driver = {
+ .of_match_table = of_match_ptr(mt9p031_of_match),
.name = "mt9p031",
},
.probe = mt9p031_probe,
--
1.7.0.4
On Sun, May 26, 2013 at 06:38:54PM +0530, Prabhakar Lad wrote:
> From: Lad, Prabhakar <[email protected]>
>
> add OF support for the mt9p031 sensor driver.
> Alongside this patch sorts the header inclusion alphabetically.
>
> Signed-off-by: Lad, Prabhakar <[email protected]>
> Cc: Hans Verkuil <[email protected]>
> Cc: Laurent Pinchart <[email protected]>
> Cc: Mauro Carvalho Chehab <[email protected]>
> Cc: Guennadi Liakhovetski <[email protected]>
> Cc: Sylwester Nawrocki <[email protected]>
> Cc: Sakari Ailus <[email protected]>
> Cc: Grant Likely <[email protected]>
> Cc: Sascha Hauer <[email protected]>
> Cc: Rob Herring <[email protected]>
> Cc: Rob Landley <[email protected]>
> Cc: Arnd Bergmann <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
Reviewed-by: Sascha Hauer <[email protected]>
Sascha
> ---
> Changes for NON RFC v1:
> 1: added missing call for of_node_put().
>
> Changes for RFC v4 (https://patchwork.kernel.org/patch/2556251/):
> 1: Renamed "gpio-reset" property to "reset-gpios".
> 2: Dropped assigning the driver data from the of node.
>
> Changes for RFC v3(https://patchwork.kernel.org/patch/2515921/):
> 1: Dropped check if gpio-reset is valid.
> 2: Fixed some code nits.
> 3: Included a reference to the V4L2 DT bindings documentation.
>
> Changes for RFC v2 (https://patchwork.kernel.org/patch/2510201/):
> 1: Used '-' instead of '_' for device properties.
> 2: Specified gpio reset pin as phandle in device node.
> 3: Handle platform data properly even if kernel is compiled with
> devicetree support.
> 4: Used dev_* for messages in drivers instead of pr_*.
> 5: Changed compatible property to "aptina,mt9p031" and "aptina,mt9p031m".
> 6: Sorted the header inclusion alphabetically and fixed some minor code nits.
>
> RFC v1: https://patchwork.kernel.org/patch/2498791/
>
> .../devicetree/bindings/media/i2c/mt9p031.txt | 40 ++++++++++++++++++
> drivers/media/i2c/mt9p031.c | 43 +++++++++++++++++++-
> 2 files changed, 81 insertions(+), 2 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/media/i2c/mt9p031.txt
>
> diff --git a/Documentation/devicetree/bindings/media/i2c/mt9p031.txt b/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> new file mode 100644
> index 0000000..59d613c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> @@ -0,0 +1,40 @@
> +* Aptina 1/2.5-Inch 5Mp CMOS Digital Image Sensor
> +
> +The Aptina MT9P031 is a 1/2.5-inch CMOS active pixel digital image sensor with
> +an active array size of 2592H x 1944V. It is programmable through a simple
> +two-wire serial interface.
> +
> +Required Properties :
> +- compatible : value should be either one among the following
> + (a) "aptina,mt9p031" for mt9p031 sensor
> + (b) "aptina,mt9p031m" for mt9p031m sensor
> +
> +- input-clock-frequency : Input clock frequency.
> +
> +- pixel-clock-frequency : Pixel clock frequency.
> +
> +Optional Properties :
> +- reset-gpios: Chip reset GPIO
> +
> +For further reading of port node refer Documentation/devicetree/bindings/media/
> +video-interfaces.txt.
> +
> +Example:
> +
> + i2c0@1c22000 {
> + ...
> + ...
> + mt9p031@5d {
> + compatible = "aptina,mt9p031";
> + reg = <0x5d>;
> + reset-gpios = <&gpio3 30 0>;
> +
> + port {
> + mt9p031_1: endpoint {
> + input-clock-frequency = <6000000>;
> + pixel-clock-frequency = <96000000>;
> + };
> + };
> + };
> + ...
> + };
> diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c
> index bf49899..bb1f993 100644
> --- a/drivers/media/i2c/mt9p031.c
> +++ b/drivers/media/i2c/mt9p031.c
> @@ -16,9 +16,10 @@
> #include <linux/delay.h>
> #include <linux/device.h>
> #include <linux/gpio.h>
> -#include <linux/module.h>
> #include <linux/i2c.h>
> #include <linux/log2.h>
> +#include <linux/module.h>
> +#include <linux/of_gpio.h>
> #include <linux/pm.h>
> #include <linux/regulator/consumer.h>
> #include <linux/slab.h>
> @@ -28,6 +29,7 @@
> #include <media/v4l2-chip-ident.h>
> #include <media/v4l2-ctrls.h>
> #include <media/v4l2-device.h>
> +#include <media/v4l2-of.h>
> #include <media/v4l2-subdev.h>
>
> #include "aptina-pll.h"
> @@ -928,10 +930,37 @@ static const struct v4l2_subdev_internal_ops mt9p031_subdev_internal_ops = {
> * Driver initialization and probing
> */
>
> +static struct mt9p031_platform_data *
> +mt9p031_get_pdata(struct i2c_client *client)
> +{
> + struct mt9p031_platform_data *pdata = NULL;
> + struct device_node *np;
> +
> + if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
> + return client->dev.platform_data;
> +
> + np = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
> + if (!np)
> + return NULL;
> +
> + pdata = devm_kzalloc(&client->dev, sizeof(struct mt9p031_platform_data),
> + GFP_KERNEL);
> + if (!pdata)
> + goto done;
> +
> + pdata->reset = of_get_named_gpio(client->dev.of_node, "reset-gpios", 0);
> + of_property_read_u32(np, "input-clock-frequency", &pdata->ext_freq);
> + of_property_read_u32(np, "pixel-clock-frequency", &pdata->target_freq);
> +
> +done:
> + of_node_put(np);
> + return pdata;
> +}
> +
> static int mt9p031_probe(struct i2c_client *client,
> const struct i2c_device_id *did)
> {
> - struct mt9p031_platform_data *pdata = client->dev.platform_data;
> + struct mt9p031_platform_data *pdata = mt9p031_get_pdata(client);
> struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
> struct mt9p031 *mt9p031;
> unsigned int i;
> @@ -1070,8 +1099,18 @@ static const struct i2c_device_id mt9p031_id[] = {
> };
> MODULE_DEVICE_TABLE(i2c, mt9p031_id);
>
> +#if IS_ENABLED(CONFIG_OF)
> +static const struct of_device_id mt9p031_of_match[] = {
> + { .compatible = "aptina,mt9p031", },
> + { .compatible = "aptina,mt9p031m", },
> + { /* sentinel */ },
> +};
> +MODULE_DEVICE_TABLE(of, mt9p031_of_match);
> +#endif
> +
> static struct i2c_driver mt9p031_i2c_driver = {
> .driver = {
> + .of_match_table = of_match_ptr(mt9p031_of_match),
> .name = "mt9p031",
> },
> .probe = mt9p031_probe,
> --
> 1.7.0.4
>
>
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
Hi Prabhakar,
Thanks for the patch.
On Sunday 26 May 2013 18:38:54 Prabhakar Lad wrote:
> From: Lad, Prabhakar <[email protected]>
>
> add OF support for the mt9p031 sensor driver.
> Alongside this patch sorts the header inclusion alphabetically.
>
> Signed-off-by: Lad, Prabhakar <[email protected]>
> Cc: Hans Verkuil <[email protected]>
> Cc: Laurent Pinchart <[email protected]>
> Cc: Mauro Carvalho Chehab <[email protected]>
> Cc: Guennadi Liakhovetski <[email protected]>
> Cc: Sylwester Nawrocki <[email protected]>
> Cc: Sakari Ailus <[email protected]>
> Cc: Grant Likely <[email protected]>
> Cc: Sascha Hauer <[email protected]>
> Cc: Rob Herring <[email protected]>
> Cc: Rob Landley <[email protected]>
> Cc: Arnd Bergmann <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
Acked-by: Laurent Pinchart <[email protected]>
And added to my tree with three small changes (please see below).
> ---
> Changes for NON RFC v1:
> 1: added missing call for of_node_put().
>
> Changes for RFC v4 (https://patchwork.kernel.org/patch/2556251/):
> 1: Renamed "gpio-reset" property to "reset-gpios".
> 2: Dropped assigning the driver data from the of node.
>
> Changes for RFC v3(https://patchwork.kernel.org/patch/2515921/):
> 1: Dropped check if gpio-reset is valid.
> 2: Fixed some code nits.
> 3: Included a reference to the V4L2 DT bindings documentation.
>
> Changes for RFC v2 (https://patchwork.kernel.org/patch/2510201/):
> 1: Used '-' instead of '_' for device properties.
> 2: Specified gpio reset pin as phandle in device node.
> 3: Handle platform data properly even if kernel is compiled with
> devicetree support.
> 4: Used dev_* for messages in drivers instead of pr_*.
> 5: Changed compatible property to "aptina,mt9p031" and "aptina,mt9p031m".
> 6: Sorted the header inclusion alphabetically and fixed some minor code
> nits.
>
> RFC v1: https://patchwork.kernel.org/patch/2498791/
>
> .../devicetree/bindings/media/i2c/mt9p031.txt | 40
> ++++++++++++++++++ drivers/media/i2c/mt9p031.c |
> 43 +++++++++++++++++++- 2 files changed, 81 insertions(+), 2 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/media/i2c/mt9p031.txt
>
> diff --git a/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> b/Documentation/devicetree/bindings/media/i2c/mt9p031.txt new file mode
> 100644
> index 0000000..59d613c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/i2c/mt9p031.txt
> @@ -0,0 +1,40 @@
> +* Aptina 1/2.5-Inch 5Mp CMOS Digital Image Sensor
> +
> +The Aptina MT9P031 is a 1/2.5-inch CMOS active pixel digital image sensor
> with +an active array size of 2592H x 1944V. It is programmable through a
> simple +two-wire serial interface.
> +
> +Required Properties :
> +- compatible : value should be either one among the following
> + (a) "aptina,mt9p031" for mt9p031 sensor
> + (b) "aptina,mt9p031m" for mt9p031m sensor
> +
> +- input-clock-frequency : Input clock frequency.
> +
> +- pixel-clock-frequency : Pixel clock frequency.
> +
> +Optional Properties :
> +- reset-gpios: Chip reset GPIO
There's usually no space before a colon in English.
> +For further reading of port node refer
> Documentation/devicetree/bindings/media/video-interfaces.txt.
> +
> +Example:
> +
> + i2c0@1c22000 {
> + ...
> + ...
> + mt9p031@5d {
> + compatible = "aptina,mt9p031";
> + reg = <0x5d>;
> + reset-gpios = <&gpio3 30 0>;
> +
> + port {
> + mt9p031_1: endpoint {
> + input-clock-frequency = <6000000>;
> + pixel-clock-frequency = <96000000>;
> + };
> + };
> + };
> + ...
> + };
> diff --git a/drivers/media/i2c/mt9p031.c b/drivers/media/i2c/mt9p031.c
> index bf49899..bb1f993 100644
> --- a/drivers/media/i2c/mt9p031.c
> +++ b/drivers/media/i2c/mt9p031.c
> @@ -16,9 +16,10 @@
> #include <linux/delay.h>
> #include <linux/device.h>
> #include <linux/gpio.h>
> -#include <linux/module.h>
> #include <linux/i2c.h>
> #include <linux/log2.h>
> +#include <linux/module.h>
> +#include <linux/of_gpio.h>
> #include <linux/pm.h>
> #include <linux/regulator/consumer.h>
> #include <linux/slab.h>
> @@ -28,6 +29,7 @@
> #include <media/v4l2-chip-ident.h>
> #include <media/v4l2-ctrls.h>
> #include <media/v4l2-device.h>
> +#include <media/v4l2-of.h>
> #include <media/v4l2-subdev.h>
>
> #include "aptina-pll.h"
> @@ -928,10 +930,37 @@ static const struct v4l2_subdev_internal_ops
> mt9p031_subdev_internal_ops = { * Driver initialization and probing
> */
>
> +static struct mt9p031_platform_data *
> +mt9p031_get_pdata(struct i2c_client *client)
> +{
> + struct mt9p031_platform_data *pdata = NULL;
No need to initialize pdata to NULL here.
> + struct device_node *np;
> +
> + if (!IS_ENABLED(CONFIG_OF) || !client->dev.of_node)
> + return client->dev.platform_data;
> +
> + np = v4l2_of_get_next_endpoint(client->dev.of_node, NULL);
> + if (!np)
> + return NULL;
> +
> + pdata = devm_kzalloc(&client->dev, sizeof(struct mt9p031_platform_data),
> + GFP_KERNEL);
The preferred way to use sizeof in the kernel is sizeof(*var) instead of
sizeof(type). I've thus replaced the above line with
pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
> + if (!pdata)
> + goto done;
> +
> + pdata->reset = of_get_named_gpio(client->dev.of_node, "reset-gpios", 0);
> + of_property_read_u32(np, "input-clock-frequency", &pdata->ext_freq);
> + of_property_read_u32(np, "pixel-clock-frequency", &pdata->target_freq);
> +
> +done:
> + of_node_put(np);
> + return pdata;
> +}
> +
> static int mt9p031_probe(struct i2c_client *client,
> const struct i2c_device_id *did)
> {
> - struct mt9p031_platform_data *pdata = client->dev.platform_data;
> + struct mt9p031_platform_data *pdata = mt9p031_get_pdata(client);
> struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
> struct mt9p031 *mt9p031;
> unsigned int i;
> @@ -1070,8 +1099,18 @@ static const struct i2c_device_id mt9p031_id[] = {
> };
> MODULE_DEVICE_TABLE(i2c, mt9p031_id);
>
> +#if IS_ENABLED(CONFIG_OF)
> +static const struct of_device_id mt9p031_of_match[] = {
> + { .compatible = "aptina,mt9p031", },
> + { .compatible = "aptina,mt9p031m", },
> + { /* sentinel */ },
> +};
> +MODULE_DEVICE_TABLE(of, mt9p031_of_match);
> +#endif
> +
> static struct i2c_driver mt9p031_i2c_driver = {
> .driver = {
> + .of_match_table = of_match_ptr(mt9p031_of_match),
> .name = "mt9p031",
> },
> .probe = mt9p031_probe,
--
Regards,
Laurent Pinchart
Hi Laurent,
On Wed, May 29, 2013 at 9:01 AM, Laurent Pinchart
<[email protected]> wrote:
> Hi Prabhakar,
>
> Thanks for the patch.
>
> On Sunday 26 May 2013 18:38:54 Prabhakar Lad wrote:
>> From: Lad, Prabhakar <[email protected]>
>>
>> add OF support for the mt9p031 sensor driver.
>> Alongside this patch sorts the header inclusion alphabetically.
>>
>> Signed-off-by: Lad, Prabhakar <[email protected]>
>> Cc: Hans Verkuil <[email protected]>
>> Cc: Laurent Pinchart <[email protected]>
>> Cc: Mauro Carvalho Chehab <[email protected]>
>> Cc: Guennadi Liakhovetski <[email protected]>
>> Cc: Sylwester Nawrocki <[email protected]>
>> Cc: Sakari Ailus <[email protected]>
>> Cc: Grant Likely <[email protected]>
>> Cc: Sascha Hauer <[email protected]>
>> Cc: Rob Herring <[email protected]>
>> Cc: Rob Landley <[email protected]>
>> Cc: Arnd Bergmann <[email protected]>
>> Cc: [email protected]
>> Cc: [email protected]
>> Cc: [email protected]
>> Cc: [email protected]
>
> Acked-by: Laurent Pinchart <[email protected]>
>
> And added to my tree with three small changes (please see below).
>
Thanks for applying it, with the changes :)
Regards,
--Prabhakar lad