| Message ID | 1368422224-19590-1-git-send-email-prabhakar.csengg@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Prabhakar, Thank you for the patch. On Monday 13 May 2013 10:47:04 Lad Prabhakar wrote: > From: Lad, Prabhakar <prabhakar.csengg@gmail.com> > > add OF support for the mt9p031 sensor driver. > Alongside this patch sorts the header inclusion alphabetically. > > Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com> > Cc: Hans Verkuil <hans.verkuil@cisco.com> > Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > Cc: Mauro Carvalho Chehab <mchehab@redhat.com> > Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> > Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> > Cc: Sakari Ailus <sakari.ailus@iki.fi> > Cc: Grant Likely <grant.likely@secretlab.ca> > Cc: Sascha Hauer <s.hauer@pengutronix.de> > Cc: Rob Herring <rob.herring@calxeda.com> > Cc: Rob Landley <rob@landley.net> > Cc: Arnd Bergmann <arnd@arndb.de> > Cc: devicetree-discuss@lists.ozlabs.org > Cc: davinci-linux-open-source@linux.davincidsp.com > Cc: linux-doc@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > --- > Changes for v4: > 1: Renamed "gpio-reset" property to "reset-gpios". > 2: Dropped assigning the driver data from the of node. > > Changes for v3: > 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 v2: > 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. > > .../devicetree/bindings/media/i2c/mt9p031.txt | 40 +++++++++++++++++ > drivers/media/i2c/mt9p031.c | 42 ++++++++++++++++- > 2 files changed, 80 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 28cf95b..a58207c 100644 > --- a/drivers/media/i2c/mt9p031.c > +++ b/drivers/media/i2c/mt9p031.c > @@ -16,9 +16,11 @@ > #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_device.h> > +#include <linux/of_gpio.h> > #include <linux/pm.h> > #include <linux/regulator/consumer.h> > #include <linux/slab.h> > @@ -28,6 +30,7 @@ > #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 +931,35 @@ 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 device_node *np; > + struct mt9p031_platform_data *pdata; > + > + 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) As mentioned in my review of your tvp514x OF support patch, you're missing of_node_put() calls here and at the end of this function. > + return NULL; > + > + 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); > + > + 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 +1098,18 @@ 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,
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 28cf95b..a58207c 100644 --- a/drivers/media/i2c/mt9p031.c +++ b/drivers/media/i2c/mt9p031.c @@ -16,9 +16,11 @@ #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_device.h> +#include <linux/of_gpio.h> #include <linux/pm.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> @@ -28,6 +30,7 @@ #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 +931,35 @@ 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 device_node *np; + struct mt9p031_platform_data *pdata; + + 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) + return NULL; + + 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); + + 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 +1098,18 @@ 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,