Hi Mauro,
On 19-03-20 11:18, Mauro Carvalho Chehab wrote:
> Em Sat, 2 Feb 2019 13:10:04 +0100
> Marco Felsch <m.fel...@pengutronix.de> escreveu:
>
> > The tvp5150 accepts NTSC(M,J,4.43), PAL (B,D,G,H,I,M,N) and SECAM video
> > data and is able to auto-detect the input signal.
>
> Hmm... I'm afraid of this change. As far as I remember, I tested some
> weird format variants like V4L2_STD_PAL_60 a long time ago, but there's
> no way to force video to use those. The format selection logic simply
> places the device on auto-detect mode for those weirdos, and that
> works fine at the devices I know.
Sorry I didn't get this. The format is set to autodetect during probe().
If there is no format limitation this won't be changed during
media.link_setup(). You're right I forgot to check if the cur_connector
is available during tvp5150_s_std(), in case of pdata related devices.
In such a case we should set supported_norms to V4L2_STD_ALL as it is
done by v4l2_fwnode_parse_connector() if no limitations are given.
Btw, how does it look with the other patchset?
Regards,
Marco
>
> A change like that may break things. So I would actually have a quirk
> to optionally disable auto-detection on devices that this is not know
> to work.
>
> > The auto-detection
> > does not work if the connector does not receive an input signal and the
> > tvp5150 might not be configured correctly. This misconfiguration leads
> > into wrong decoded video streams if the tvp5150 gets powered on before
> > the video signal is present.
> >
> > Limit the supported tv norms according to the actual selected connector
> > to avoid a misconfiguration.
> >
> > Signed-off-by: Marco Felsch <m.fel...@pengutronix.de>
> > ---
> > drivers/media/i2c/tvp5150.c | 42 ++++++++++++++++++++++++++++++++++++-
> > 1 file changed, 41 insertions(+), 1 deletion(-)
> >
> > diff --git a/drivers/media/i2c/tvp5150.c b/drivers/media/i2c/tvp5150.c
> > index f3a2ad00a40d..7619793dee67 100644
> > --- a/drivers/media/i2c/tvp5150.c
> > +++ b/drivers/media/i2c/tvp5150.c
> > @@ -32,6 +32,13 @@
> > #define TVP5150_MBUS_FMT MEDIA_BUS_FMT_UYVY8_2X8
> > #define TVP5150_FIELD V4L2_FIELD_ALTERNATE
> > #define TVP5150_COLORSPACE V4L2_COLORSPACE_SMPTE170M
> > +#define TVP5150_STD_MASK (V4L2_STD_NTSC | \
> > + V4L2_STD_NTSC_443 | \
> > + V4L2_STD_PAL | \
> > + V4L2_STD_PAL_M | \
> > + V4L2_STD_PAL_N | \
> > + V4L2_STD_PAL_Nc | \
> > + V4L2_STD_SECAM)
> >
> > MODULE_DESCRIPTION("Texas Instruments TVP5150A/TVP5150AM1/TVP5151 video
> > decoder driver");
> > MODULE_AUTHOR("Mauro Carvalho Chehab");
> > @@ -74,6 +81,7 @@ struct tvp5150 {
> > struct media_pad pads[TVP5150_NUM_PADS];
> > int pads_state[TVP5150_NUM_PADS];
> > struct tvp5150_connector *connectors;
> > + struct tvp5150_connector *cur_connector;
> > int connectors_num;
> > bool modify_second_link;
> > #endif
> > @@ -794,17 +802,27 @@ static int tvp5150_g_std(struct v4l2_subdev *sd,
> > v4l2_std_id *std)
> > static int tvp5150_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
> > {
> > struct tvp5150 *decoder = to_tvp5150(sd);
> > + v4l2_std_id supported_norms =
> > + decoder->cur_connector->base.connector.analog.supported_tvnorms;
> >
> > if (decoder->norm == std)
> > return 0;
> >
> > + /*
> > + * check if requested std or group of std's is/are supported by the
> > + * connector
> > + */
> > + if ((supported_norms & std) == 0)
> > + return -EINVAL;
> > +
> > /* Change cropping height limits */
> > if (std & V4L2_STD_525_60)
> > decoder->rect.height = TVP5150_V_MAX_525_60;
> > else
> > decoder->rect.height = TVP5150_V_MAX_OTHERS;
> >
> > - decoder->norm = std;
> > + /* set only the specific supported std in case of group of std's */
> > + decoder->norm = supported_norms & std;
> >
> > return tvp5150_set_std(sd, std);
> > }
> > @@ -1298,6 +1316,7 @@ static int tvp5150_link_setup(struct media_entity
> > *entity,
> > int *pad_state = &decoder->pads_state[0];
> > int i, active_pad, ret = 0;
> > bool is_svideo = false;
> > + bool update_cur_connector = false;
> >
> > /*
> > * The tvp state is determined by the enabled sink pad link.
> > @@ -1344,10 +1363,12 @@ static int tvp5150_link_setup(struct media_entity
> > *entity,
> > decoder->modify_second_link = false;
> > tvp5150_s_routing(sd, TVP5150_SVIDEO,
> > TVP5150_NORMAL, 0);
> > + update_cur_connector = true;
> > }
> > } else {
> > tvp5150_s_routing(sd, tvp5150_pad->index,
> > TVP5150_NORMAL, 0);
> > + update_cur_connector = true;
> > }
> > } else {
> > /*
> > @@ -1376,6 +1397,14 @@ static int tvp5150_link_setup(struct media_entity
> > *entity,
> > active_pad, TVP5150_BLACK_SCREEN, 0);
> > decoder->modify_second_link = false;
> > }
> > +
> > + if (update_cur_connector) {
> > + /* Update tvnorm according to connector */
> > + decoder->cur_connector =
> > + container_of(remote, struct tvp5150_connector, pad);
> > + tvp5150_s_std(sd,
> > +
> > decoder->cur_connector->base.connector.analog.supported_tvnorms);
> > + }
> > out:
> > return ret;
> > }
> > @@ -1605,6 +1634,9 @@ static int tvp5150_registered(struct v4l2_subdev *sd)
> > }
> > tvp5150_selmux(sd);
> > decoder->modify_second_link = false;
> > + decoder->cur_connector = &decoder->connectors[i];
> > + tvp5150_s_std(sd,
> > +
> > decoder->connectors[i].base.connector.analog.supported_tvnorms);
> > }
> > }
> > #endif
> > @@ -1925,6 +1957,14 @@ static int tvp5150_parse_dt(struct tvp5150 *decoder,
> > struct device_node *np)
> > ret = -EINVAL;
> > goto err;
> > }
> > + if (!(c.connector.analog.supported_tvnorms &
> > + TVP5150_STD_MASK)) {
> > + dev_err(dev,
> > + "Invalid tv norm(s) on connector %s.\n",
> > + c.label);
> > + ret = -EINVAL;
> > + goto err;
> > + }
> > in++;
> > break;
> > case TVP5150_PAD_VID_OUT:
>
>
>
> Thanks,
> Mauro
>
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