[v2,2/4,media] davinci: vpif_capture: get subdevs from DT when available
Commit Message
Enable getting of subdevs from DT ports and endpoints.
The _get_pdata() function was larely inspired by (i.e. stolen from)
am437x-vpfe.c
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
---
drivers/media/platform/davinci/vpif_capture.c | 126 +++++++++++++++++++++++++-
drivers/media/platform/davinci/vpif_display.c | 5 +
include/media/davinci/vpif_types.h | 9 +-
3 files changed, 134 insertions(+), 6 deletions(-)
Comments
On 07/06/17 01:37, Kevin Hilman wrote:
> Enable getting of subdevs from DT ports and endpoints.
>
> The _get_pdata() function was larely inspired by (i.e. stolen from)
> am437x-vpfe.c
>
> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
> ---
> drivers/media/platform/davinci/vpif_capture.c | 126 +++++++++++++++++++++++++-
> drivers/media/platform/davinci/vpif_display.c | 5 +
> include/media/davinci/vpif_types.h | 9 +-
> 3 files changed, 134 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
> index fc5c7622660c..b9d927d1e5a8 100644
> --- a/drivers/media/platform/davinci/vpif_capture.c
> +++ b/drivers/media/platform/davinci/vpif_capture.c
> @@ -22,6 +22,8 @@
> #include <linux/slab.h>
>
> #include <media/v4l2-ioctl.h>
> +#include <media/v4l2-of.h>
v4l2-of.h no longer exists, so this v2 is wrong. Unfortunately this patch has
already been merged in our master. I'm not sure how this could have slipped past
both my and Mauro's patch testing (and yours, for that matter).
Can you fix this and post a patch on top of the media master that makes this
compile again?
Regards,
Hans
On Wed, Jun 7, 2017 at 11:29 PM, Hans Verkuil <hverkuil@xs4all.nl> wrote:
> On 07/06/17 01:37, Kevin Hilman wrote:
>> Enable getting of subdevs from DT ports and endpoints.
>>
>> The _get_pdata() function was larely inspired by (i.e. stolen from)
>> am437x-vpfe.c
>>
>> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
>> ---
>> drivers/media/platform/davinci/vpif_capture.c | 126 +++++++++++++++++++++++++-
>> drivers/media/platform/davinci/vpif_display.c | 5 +
>> include/media/davinci/vpif_types.h | 9 +-
>> 3 files changed, 134 insertions(+), 6 deletions(-)
>>
>> diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
>> index fc5c7622660c..b9d927d1e5a8 100644
>> --- a/drivers/media/platform/davinci/vpif_capture.c
>> +++ b/drivers/media/platform/davinci/vpif_capture.c
>> @@ -22,6 +22,8 @@
>> #include <linux/slab.h>
>>
>> #include <media/v4l2-ioctl.h>
>> +#include <media/v4l2-of.h>
>
> v4l2-of.h no longer exists, so this v2 is wrong. Unfortunately this patch has
> already been merged in our master. I'm not sure how this could have slipped past
> both my and Mauro's patch testing (and yours, for that matter).
I have that file in the various trees I tested agains.
> Can you fix this and post a patch on top of the media master that makes this
> compile again?
Sorry for the dumb question, but what tree are you referring to? I
tried the master branch of both [1] and [2] and both seem to have that
include.
Kevin
[1] https://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media.git
[2] git://linuxtv.org/mchehab/media-next.git
Hi Kevin,
Thanks for the patch.
On Fri, Jun 9, 2017 at 2:01 AM, Kevin Hilman <khilman@baylibre.com> wrote:
> On Wed, Jun 7, 2017 at 11:29 PM, Hans Verkuil <hverkuil@xs4all.nl> wrote:
>> On 07/06/17 01:37, Kevin Hilman wrote:
>>> Enable getting of subdevs from DT ports and endpoints.
>>>
>>> The _get_pdata() function was larely inspired by (i.e. stolen from)
>>> am437x-vpfe.c
>>>
>>> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
>>> ---
>>> drivers/media/platform/davinci/vpif_capture.c | 126 +++++++++++++++++++++++++-
>>> drivers/media/platform/davinci/vpif_display.c | 5 +
Can you make this as a separate patch.
>>> include/media/davinci/vpif_types.h | 9 +-
>>> 3 files changed, 134 insertions(+), 6 deletions(-)
>>>
>>> diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
>>> index fc5c7622660c..b9d927d1e5a8 100644
>>> --- a/drivers/media/platform/davinci/vpif_capture.c
>>> +++ b/drivers/media/platform/davinci/vpif_capture.c
>>> @@ -22,6 +22,8 @@
>>> #include <linux/slab.h>
>>>
>>> #include <media/v4l2-ioctl.h>
>>> +#include <media/v4l2-of.h>
>>
>> v4l2-of.h no longer exists, so this v2 is wrong. Unfortunately this patch has
>> already been merged in our master. I'm not sure how this could have slipped past
>> both my and Mauro's patch testing (and yours, for that matter).
>
> I have that file in the various trees I tested agains.
>
>> Can you fix this and post a patch on top of the media master that makes this
>> compile again?
>
> Sorry for the dumb question, but what tree are you referring to? I
> tried the master branch of both [1] and [2] and both seem to have that
> include.
>
> Kevin
>
> [1] https://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media.git
> [2] git://linuxtv.org/mchehab/media-next.git
media master is https://git.linuxtv.org/media_tree.git/
Cheers,
--Prabhakar Lad
Hi Kevin,
On Thu, Jun 08, 2017 at 06:01:45PM -0700, Kevin Hilman wrote:
> On Wed, Jun 7, 2017 at 11:29 PM, Hans Verkuil <hverkuil@xs4all.nl> wrote:
> > On 07/06/17 01:37, Kevin Hilman wrote:
> >> Enable getting of subdevs from DT ports and endpoints.
> >>
> >> The _get_pdata() function was larely inspired by (i.e. stolen from)
> >> am437x-vpfe.c
> >>
> >> Signed-off-by: Kevin Hilman <khilman@baylibre.com>
> >> ---
> >> drivers/media/platform/davinci/vpif_capture.c | 126 +++++++++++++++++++++++++-
> >> drivers/media/platform/davinci/vpif_display.c | 5 +
> >> include/media/davinci/vpif_types.h | 9 +-
> >> 3 files changed, 134 insertions(+), 6 deletions(-)
> >>
> >> diff --git a/drivers/media/platform/davinci/vpif_capture.c b/drivers/media/platform/davinci/vpif_capture.c
> >> index fc5c7622660c..b9d927d1e5a8 100644
> >> --- a/drivers/media/platform/davinci/vpif_capture.c
> >> +++ b/drivers/media/platform/davinci/vpif_capture.c
> >> @@ -22,6 +22,8 @@
> >> #include <linux/slab.h>
> >>
> >> #include <media/v4l2-ioctl.h>
> >> +#include <media/v4l2-of.h>
> >
> > v4l2-of.h no longer exists, so this v2 is wrong. Unfortunately this patch has
> > already been merged in our master. I'm not sure how this could have slipped past
> > both my and Mauro's patch testing (and yours, for that matter).
>
> I have that file in the various trees I tested agains.
>
> > Can you fix this and post a patch on top of the media master that makes this
> > compile again?
>
> Sorry for the dumb question, but what tree are you referring to? I
> tried the master branch of both [1] and [2] and both seem to have that
> include.
These patches are now merged as well as the changes requested:
<URL:https://git.linuxtv.org/media_tree.git/commit/?id=a2d17962c9ca7ac66a132bbbfc6054559856e14e>
@@ -22,6 +22,8 @@
#include <linux/slab.h>
#include <media/v4l2-ioctl.h>
+#include <media/v4l2-of.h>
+#include <media/i2c/tvp514x.h>
#include "vpif.h"
#include "vpif_capture.h"
@@ -655,7 +657,7 @@ static int vpif_input_to_subdev(
/* loop through the sub device list to get the sub device info */
for (i = 0; i < vpif_cfg->subdev_count; i++) {
subdev_info = &vpif_cfg->subdev_info[i];
- if (!strcmp(subdev_info->name, subdev_name))
+ if (subdev_info && !strcmp(subdev_info->name, subdev_name))
return i;
}
return -1;
@@ -1308,6 +1310,21 @@ static int vpif_async_bound(struct v4l2_async_notifier *notifier,
{
int i;
+ for (i = 0; i < vpif_obj.config->asd_sizes[0]; i++) {
+ struct v4l2_async_subdev *_asd = vpif_obj.config->asd[i];
+ const struct device_node *node = _asd->match.of.node;
+
+ if (node == subdev->of_node) {
+ vpif_obj.sd[i] = subdev;
+ vpif_obj.config->chan_config->inputs[i].subdev_name =
+ (char *)subdev->of_node->full_name;
+ vpif_dbg(2, debug,
+ "%s: setting input %d subdev_name = %s\n",
+ __func__, i, subdev->of_node->full_name);
+ return 0;
+ }
+ }
+
for (i = 0; i < vpif_obj.config->subdev_count; i++)
if (!strcmp(vpif_obj.config->subdev_info[i].name,
subdev->name)) {
@@ -1403,6 +1420,105 @@ static int vpif_async_complete(struct v4l2_async_notifier *notifier)
return vpif_probe_complete();
}
+static struct vpif_capture_config *
+vpif_capture_get_pdata(struct platform_device *pdev)
+{
+ struct device_node *endpoint = NULL;
+ struct v4l2_of_endpoint bus_cfg;
+ struct vpif_capture_config *pdata;
+ struct vpif_subdev_info *sdinfo;
+ struct vpif_capture_chan_config *chan;
+ unsigned int i;
+
+ /*
+ * DT boot: OF node from parent device contains
+ * video ports & endpoints data.
+ */
+ if (pdev->dev.parent && pdev->dev.parent->of_node)
+ pdev->dev.of_node = pdev->dev.parent->of_node;
+ if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
+ return pdev->dev.platform_data;
+
+ pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+ if (!pdata)
+ return NULL;
+ pdata->subdev_info =
+ devm_kzalloc(&pdev->dev, sizeof(*pdata->subdev_info) *
+ VPIF_CAPTURE_NUM_CHANNELS, GFP_KERNEL);
+
+ if (!pdata->subdev_info)
+ return NULL;
+
+ for (i = 0; i < VPIF_CAPTURE_NUM_CHANNELS; i++) {
+ struct device_node *rem;
+ unsigned int flags;
+ int err;
+
+ endpoint = of_graph_get_next_endpoint(pdev->dev.of_node,
+ endpoint);
+ if (!endpoint)
+ break;
+
+ sdinfo = &pdata->subdev_info[i];
+ chan = &pdata->chan_config[i];
+ chan->inputs = devm_kzalloc(&pdev->dev,
+ sizeof(*chan->inputs) *
+ VPIF_CAPTURE_NUM_CHANNELS,
+ GFP_KERNEL);
+
+ chan->input_count++;
+ chan->inputs[i].input.type = V4L2_INPUT_TYPE_CAMERA;
+ chan->inputs[i].input.std = V4L2_STD_ALL;
+ chan->inputs[i].input.capabilities = V4L2_IN_CAP_STD;
+
+ err = v4l2_of_parse_endpoint(endpoint, &bus_cfg);
+ if (err) {
+ dev_err(&pdev->dev, "Could not parse the endpoint\n");
+ goto done;
+ }
+ dev_dbg(&pdev->dev, "Endpoint %s, bus_width = %d\n",
+ endpoint->full_name, bus_cfg.bus.parallel.bus_width);
+ flags = bus_cfg.bus.parallel.flags;
+
+ if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
+ chan->vpif_if.hd_pol = 1;
+
+ if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
+ chan->vpif_if.vd_pol = 1;
+
+ rem = of_graph_get_remote_port_parent(endpoint);
+ if (!rem) {
+ dev_dbg(&pdev->dev, "Remote device at %s not found\n",
+ endpoint->full_name);
+ goto done;
+ }
+
+ dev_dbg(&pdev->dev, "Remote device %s, %s found\n",
+ rem->name, rem->full_name);
+ sdinfo->name = rem->full_name;
+
+ pdata->asd[i] = devm_kzalloc(&pdev->dev,
+ sizeof(struct v4l2_async_subdev),
+ GFP_KERNEL);
+ if (!pdata->asd[i]) {
+ of_node_put(rem);
+ pdata = NULL;
+ goto done;
+ }
+
+ pdata->asd[i]->match_type = V4L2_ASYNC_MATCH_OF;
+ pdata->asd[i]->match.of.node = rem;
+ of_node_put(rem);
+ }
+
+done:
+ pdata->asd_sizes[0] = i;
+ pdata->subdev_count = i;
+ pdata->card_name = "DA850/OMAP-L138 Video Capture";
+
+ return pdata;
+}
+
/**
* vpif_probe : This function probes the vpif capture driver
* @pdev: platform device pointer
@@ -1419,6 +1535,12 @@ static __init int vpif_probe(struct platform_device *pdev)
int res_idx = 0;
int i, err;
+ pdev->dev.platform_data = vpif_capture_get_pdata(pdev);
+ if (!pdev->dev.platform_data) {
+ dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
+ return -EINVAL;
+ }
+
if (!pdev->dev.platform_data) {
dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
return -EINVAL;
@@ -1459,7 +1581,7 @@ static __init int vpif_probe(struct platform_device *pdev)
goto vpif_unregister;
}
- if (!vpif_obj.config->asd_sizes) {
+ if (!vpif_obj.config->asd_sizes[0]) {
int i2c_id = vpif_obj.config->i2c_adapter_id;
i2c_adap = i2c_get_adapter(i2c_id);
@@ -1250,6 +1250,11 @@ static __init int vpif_probe(struct platform_device *pdev)
return -EINVAL;
}
+ if (!pdev->dev.platform_data) {
+ dev_warn(&pdev->dev, "Missing platform data. Giving up.\n");
+ return -EINVAL;
+ }
+
vpif_dev = &pdev->dev;
err = initialize_vpif();
@@ -62,14 +62,14 @@ struct vpif_display_config {
struct vpif_input {
struct v4l2_input input;
- const char *subdev_name;
+ char *subdev_name;
u32 input_route;
u32 output_route;
};
struct vpif_capture_chan_config {
struct vpif_interface vpif_if;
- const struct vpif_input *inputs;
+ struct vpif_input *inputs;
int input_count;
};
@@ -81,7 +81,8 @@ struct vpif_capture_config {
int subdev_count;
int i2c_adapter_id;
const char *card_name;
- struct v4l2_async_subdev **asd; /* Flat array, arranged in groups */
- int *asd_sizes; /* 0-terminated array of asd group sizes */
+
+ struct v4l2_async_subdev *asd[VPIF_CAPTURE_MAX_CHANNELS];
+ int asd_sizes[VPIF_CAPTURE_MAX_CHANNELS];
};
#endif /* _VPIF_TYPES_H */