| Message ID | 20200917174224.11430-2-prabhakar.mahadev-lad.rj@bp.renesas.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v6,1/3] media: i2c: ov772x: Parse endpoint properties | expand |
Hi On Thu, Sep 17, 2020 at 06:42:22PM +0100, Lad Prabhakar wrote: > Parse endpoint properties using v4l2_fwnode_endpoint_alloc_parse() > to determine the bus type and store it in the driver structure. > > Set bus_type to V4L2_MBUS_PARALLEL as it's the only supported one > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Looks good! Reviewed-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Thanks j > --- > drivers/media/i2c/ov772x.c | 34 ++++++++++++++++++++++++++++++++++ > 1 file changed, 34 insertions(+) > > diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c > index 2cc6a678069a..f61a3f09ad64 100644 > --- a/drivers/media/i2c/ov772x.c > +++ b/drivers/media/i2c/ov772x.c > @@ -31,6 +31,7 @@ > #include <media/v4l2-ctrls.h> > #include <media/v4l2-device.h> > #include <media/v4l2-event.h> > +#include <media/v4l2-fwnode.h> > #include <media/v4l2-image-sizes.h> > #include <media/v4l2-subdev.h> > > @@ -434,6 +435,7 @@ struct ov772x_priv { > #ifdef CONFIG_MEDIA_CONTROLLER > struct media_pad pad; > #endif > + enum v4l2_mbus_type bus_type; > }; > > /* > @@ -1348,6 +1350,34 @@ static const struct v4l2_subdev_ops ov772x_subdev_ops = { > .pad = &ov772x_subdev_pad_ops, > }; > > +static int ov772x_parse_dt(struct i2c_client *client, > + struct ov772x_priv *priv) > +{ > + struct v4l2_fwnode_endpoint bus_cfg; > + struct fwnode_handle *ep; > + int ret; > + > + ep = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), > + NULL); > + if (!ep) { > + dev_err(&client->dev, "Endpoint node not found\n"); > + return -EINVAL; > + } > + > + bus_cfg.bus_type = V4L2_MBUS_PARALLEL; > + ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); > + if (ret) > + goto error_fwnode_put; > + > + priv->bus_type = bus_cfg.bus_type; > + v4l2_fwnode_endpoint_free(&bus_cfg); > + > +error_fwnode_put: > + fwnode_handle_put(ep); > + > + return ret; > +} > + > /* > * i2c_driver function > */ > @@ -1415,6 +1445,10 @@ static int ov772x_probe(struct i2c_client *client) > goto error_clk_put; > } > > + ret = ov772x_parse_dt(client, priv); > + if (ret) > + goto error_clk_put; > + > ret = ov772x_video_probe(priv); > if (ret < 0) > goto error_gpio_put; > -- > 2.17.1 >
Hi Prabhakar, On Thu, Sep 17, 2020 at 06:42:22PM +0100, Lad Prabhakar wrote: > Parse endpoint properties using v4l2_fwnode_endpoint_alloc_parse() > to determine the bus type and store it in the driver structure. > > Set bus_type to V4L2_MBUS_PARALLEL as it's the only supported one > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> > --- > drivers/media/i2c/ov772x.c | 34 ++++++++++++++++++++++++++++++++++ > 1 file changed, 34 insertions(+) > > diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c > index 2cc6a678069a..f61a3f09ad64 100644 > --- a/drivers/media/i2c/ov772x.c > +++ b/drivers/media/i2c/ov772x.c > @@ -31,6 +31,7 @@ > #include <media/v4l2-ctrls.h> > #include <media/v4l2-device.h> > #include <media/v4l2-event.h> > +#include <media/v4l2-fwnode.h> > #include <media/v4l2-image-sizes.h> > #include <media/v4l2-subdev.h> > > @@ -434,6 +435,7 @@ struct ov772x_priv { > #ifdef CONFIG_MEDIA_CONTROLLER > struct media_pad pad; > #endif > + enum v4l2_mbus_type bus_type; > }; > > /* > @@ -1348,6 +1350,34 @@ static const struct v4l2_subdev_ops ov772x_subdev_ops = { > .pad = &ov772x_subdev_pad_ops, > }; > > +static int ov772x_parse_dt(struct i2c_client *client, > + struct ov772x_priv *priv) > +{ > + struct v4l2_fwnode_endpoint bus_cfg; > + struct fwnode_handle *ep; > + int ret; > + > + ep = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), > + NULL); > + if (!ep) { > + dev_err(&client->dev, "Endpoint node not found\n"); > + return -EINVAL; > + } > + > + bus_cfg.bus_type = V4L2_MBUS_PARALLEL; Please zero the entire struct, i.e. do this assignment in the declaration. You can also use v4l2_fwnode_endpoint_parse() if you're not using the link frequencies --- sensor drivers generally should but you could only add them as optional at this point (out of scope of this patch). > + ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); > + if (ret) > + goto error_fwnode_put; > + > + priv->bus_type = bus_cfg.bus_type; > + v4l2_fwnode_endpoint_free(&bus_cfg); > + > +error_fwnode_put: > + fwnode_handle_put(ep); > + > + return ret; > +} > + > /* > * i2c_driver function > */ > @@ -1415,6 +1445,10 @@ static int ov772x_probe(struct i2c_client *client) > goto error_clk_put; > } > > + ret = ov772x_parse_dt(client, priv); > + if (ret) > + goto error_clk_put; > + > ret = ov772x_video_probe(priv); > if (ret < 0) > goto error_gpio_put; > -- > 2.17.1 >
HI Sakari, Thank you for the review. On Wed, Sep 30, 2020 at 12:45 PM Sakari Ailus <sakari.ailus@linux.intel.com> wrote: > > Hi Prabhakar, > > On Thu, Sep 17, 2020 at 06:42:22PM +0100, Lad Prabhakar wrote: > > Parse endpoint properties using v4l2_fwnode_endpoint_alloc_parse() > > to determine the bus type and store it in the driver structure. > > > > Set bus_type to V4L2_MBUS_PARALLEL as it's the only supported one > > > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> > > --- > > drivers/media/i2c/ov772x.c | 34 ++++++++++++++++++++++++++++++++++ > > 1 file changed, 34 insertions(+) > > > > diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c > > index 2cc6a678069a..f61a3f09ad64 100644 > > --- a/drivers/media/i2c/ov772x.c > > +++ b/drivers/media/i2c/ov772x.c > > @@ -31,6 +31,7 @@ > > #include <media/v4l2-ctrls.h> > > #include <media/v4l2-device.h> > > #include <media/v4l2-event.h> > > +#include <media/v4l2-fwnode.h> > > #include <media/v4l2-image-sizes.h> > > #include <media/v4l2-subdev.h> > > > > @@ -434,6 +435,7 @@ struct ov772x_priv { > > #ifdef CONFIG_MEDIA_CONTROLLER > > struct media_pad pad; > > #endif > > + enum v4l2_mbus_type bus_type; > > }; > > > > /* > > @@ -1348,6 +1350,34 @@ static const struct v4l2_subdev_ops ov772x_subdev_ops = { > > .pad = &ov772x_subdev_pad_ops, > > }; > > > > +static int ov772x_parse_dt(struct i2c_client *client, > > + struct ov772x_priv *priv) > > +{ > > + struct v4l2_fwnode_endpoint bus_cfg; > > + struct fwnode_handle *ep; > > + int ret; > > + > > + ep = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), > > + NULL); > > + if (!ep) { > > + dev_err(&client->dev, "Endpoint node not found\n"); > > + return -EINVAL; > > + } > > + > > + bus_cfg.bus_type = V4L2_MBUS_PARALLEL; > > Please zero the entire struct, i.e. do this assignment in the declaration. > Agreed, but instead at the declaration I would prefer here as below, since patch 2/3 has a comment related to backward compatibility with the bindings. Is this OK with you ? bus_cfg = (struct v4l2_fwnode_endpoint) { .bus_type = V4L2_MBUS_PARALLEL }; > You can also use v4l2_fwnode_endpoint_parse() if you're not using the link > frequencies --- sensor drivers generally should but you could only add them > as optional at this point (out of scope of this patch). > will stick with this for now :) Cheers, Prabhakar
On Wed, Sep 30, 2020 at 01:19:40PM +0100, Lad, Prabhakar wrote: > HI Sakari, > > Thank you for the review. > > On Wed, Sep 30, 2020 at 12:45 PM Sakari Ailus > <sakari.ailus@linux.intel.com> wrote: > > > > Hi Prabhakar, > > > > On Thu, Sep 17, 2020 at 06:42:22PM +0100, Lad Prabhakar wrote: > > > Parse endpoint properties using v4l2_fwnode_endpoint_alloc_parse() > > > to determine the bus type and store it in the driver structure. > > > > > > Set bus_type to V4L2_MBUS_PARALLEL as it's the only supported one > > > > > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> > > > --- > > > drivers/media/i2c/ov772x.c | 34 ++++++++++++++++++++++++++++++++++ > > > 1 file changed, 34 insertions(+) > > > > > > diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c > > > index 2cc6a678069a..f61a3f09ad64 100644 > > > --- a/drivers/media/i2c/ov772x.c > > > +++ b/drivers/media/i2c/ov772x.c > > > @@ -31,6 +31,7 @@ > > > #include <media/v4l2-ctrls.h> > > > #include <media/v4l2-device.h> > > > #include <media/v4l2-event.h> > > > +#include <media/v4l2-fwnode.h> > > > #include <media/v4l2-image-sizes.h> > > > #include <media/v4l2-subdev.h> > > > > > > @@ -434,6 +435,7 @@ struct ov772x_priv { > > > #ifdef CONFIG_MEDIA_CONTROLLER > > > struct media_pad pad; > > > #endif > > > + enum v4l2_mbus_type bus_type; > > > }; > > > > > > /* > > > @@ -1348,6 +1350,34 @@ static const struct v4l2_subdev_ops ov772x_subdev_ops = { > > > .pad = &ov772x_subdev_pad_ops, > > > }; > > > > > > +static int ov772x_parse_dt(struct i2c_client *client, > > > + struct ov772x_priv *priv) > > > +{ > > > + struct v4l2_fwnode_endpoint bus_cfg; > > > + struct fwnode_handle *ep; > > > + int ret; > > > + > > > + ep = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), > > > + NULL); > > > + if (!ep) { > > > + dev_err(&client->dev, "Endpoint node not found\n"); > > > + return -EINVAL; > > > + } > > > + > > > + bus_cfg.bus_type = V4L2_MBUS_PARALLEL; > > > > Please zero the entire struct, i.e. do this assignment in the declaration. > > > Agreed, but instead at the declaration I would prefer here as below, > since patch 2/3 has a comment related to backward compatibility with > the bindings. Is this OK with you ? > bus_cfg = (struct v4l2_fwnode_endpoint) > { .bus_type = V4L2_MBUS_PARALLEL }; Why not in variable declaration?
diff --git a/drivers/media/i2c/ov772x.c b/drivers/media/i2c/ov772x.c index 2cc6a678069a..f61a3f09ad64 100644 --- a/drivers/media/i2c/ov772x.c +++ b/drivers/media/i2c/ov772x.c @@ -31,6 +31,7 @@ #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> #include <media/v4l2-event.h> +#include <media/v4l2-fwnode.h> #include <media/v4l2-image-sizes.h> #include <media/v4l2-subdev.h> @@ -434,6 +435,7 @@ struct ov772x_priv { #ifdef CONFIG_MEDIA_CONTROLLER struct media_pad pad; #endif + enum v4l2_mbus_type bus_type; }; /* @@ -1348,6 +1350,34 @@ static const struct v4l2_subdev_ops ov772x_subdev_ops = { .pad = &ov772x_subdev_pad_ops, }; +static int ov772x_parse_dt(struct i2c_client *client, + struct ov772x_priv *priv) +{ + struct v4l2_fwnode_endpoint bus_cfg; + struct fwnode_handle *ep; + int ret; + + ep = fwnode_graph_get_next_endpoint(dev_fwnode(&client->dev), + NULL); + if (!ep) { + dev_err(&client->dev, "Endpoint node not found\n"); + return -EINVAL; + } + + bus_cfg.bus_type = V4L2_MBUS_PARALLEL; + ret = v4l2_fwnode_endpoint_alloc_parse(ep, &bus_cfg); + if (ret) + goto error_fwnode_put; + + priv->bus_type = bus_cfg.bus_type; + v4l2_fwnode_endpoint_free(&bus_cfg); + +error_fwnode_put: + fwnode_handle_put(ep); + + return ret; +} + /* * i2c_driver function */ @@ -1415,6 +1445,10 @@ static int ov772x_probe(struct i2c_client *client) goto error_clk_put; } + ret = ov772x_parse_dt(client, priv); + if (ret) + goto error_clk_put; + ret = ov772x_video_probe(priv); if (ret < 0) goto error_gpio_put;
Parse endpoint properties using v4l2_fwnode_endpoint_alloc_parse() to determine the bus type and store it in the driver structure. Set bus_type to V4L2_MBUS_PARALLEL as it's the only supported one Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> --- drivers/media/i2c/ov772x.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+)