| Message ID | 20240617161135.130719-8-jacopo.mondi@ideasonboard.com (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | Kieran Bingham |
| Headers | show |
| Series | media: renesas: rcar-csi2: Use the subdev active state | expand |
Hi Jacopo, Thank you for the patch. On Mon, Jun 17, 2024 at 06:11:30PM +0200, Jacopo Mondi wrote: > The adv748x-csi2 driver configures the CSI-2 transmitter to > automatically infer the image stream format from the connected > frontend (HDMI or AFE). > > Setting a new format on the subdevice hence does not actually control > the CSI-2 output format, but it's only there for the purpose of > pipeline validation. > > However, there is currently no validation that the supplied media bus > code is valid and supported by the device. > > With the introduction of enum_mbus_codes a list of supported format is > now available, use it to validate that the supplied format is correct > and use the default UYVY8 one if that's not the case. > > Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> > Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> > Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> > --- > drivers/media/i2c/adv748x/adv748x-csi2.c | 23 +++++++++++++++++++++++ > 1 file changed, 23 insertions(+) > > diff --git a/drivers/media/i2c/adv748x/adv748x-csi2.c b/drivers/media/i2c/adv748x/adv748x-csi2.c > index 29b18b6c8b0e..0cdb397d9e0a 100644 > --- a/drivers/media/i2c/adv748x/adv748x-csi2.c > +++ b/drivers/media/i2c/adv748x/adv748x-csi2.c > @@ -218,6 +218,22 @@ static int adv748x_csi2_get_format(struct v4l2_subdev *sd, > return 0; > } > > +static bool adv748x_csi2_is_fmt_supported(struct adv748x_csi2 *tx, u32 code) > +{ > + const unsigned int *codes = is_txa(tx) ? > + adv748x_csi2_txa_fmts : > + adv748x_csi2_txb_fmts; > + size_t num_fmts = is_txa(tx) ? ARRAY_SIZE(adv748x_csi2_txa_fmts) > + : ARRAY_SIZE(adv748x_csi2_txb_fmts); > + > + for (unsigned int i = 0; i < num_fmts; i++) { > + if (codes[i] == code) > + return true; > + } > + > + return false; > +} > + > static int adv748x_csi2_set_format(struct v4l2_subdev *sd, > struct v4l2_subdev_state *sd_state, > struct v4l2_subdev_format *sdformat) > @@ -227,6 +243,13 @@ static int adv748x_csi2_set_format(struct v4l2_subdev *sd, > struct v4l2_mbus_framefmt *mbusformat; > int ret = 0; > > + /* > + * Make sure the format is supported, if not default it to > + * UYVY8 as it's supported by both TXes. > + */ > + if (!adv748x_csi2_is_fmt_supported(tx, sdformat->format.code)) > + sdformat->format.code = MEDIA_BUS_FMT_UYVY8_1X16; > + > mbusformat = adv748x_csi2_get_pad_format(sd, sd_state, sdformat->pad, > sdformat->which); > if (!mbusformat)
diff --git a/drivers/media/i2c/adv748x/adv748x-csi2.c b/drivers/media/i2c/adv748x/adv748x-csi2.c index 29b18b6c8b0e..0cdb397d9e0a 100644 --- a/drivers/media/i2c/adv748x/adv748x-csi2.c +++ b/drivers/media/i2c/adv748x/adv748x-csi2.c @@ -218,6 +218,22 @@ static int adv748x_csi2_get_format(struct v4l2_subdev *sd, return 0; } +static bool adv748x_csi2_is_fmt_supported(struct adv748x_csi2 *tx, u32 code) +{ + const unsigned int *codes = is_txa(tx) ? + adv748x_csi2_txa_fmts : + adv748x_csi2_txb_fmts; + size_t num_fmts = is_txa(tx) ? ARRAY_SIZE(adv748x_csi2_txa_fmts) + : ARRAY_SIZE(adv748x_csi2_txb_fmts); + + for (unsigned int i = 0; i < num_fmts; i++) { + if (codes[i] == code) + return true; + } + + return false; +} + static int adv748x_csi2_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_state *sd_state, struct v4l2_subdev_format *sdformat) @@ -227,6 +243,13 @@ static int adv748x_csi2_set_format(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *mbusformat; int ret = 0; + /* + * Make sure the format is supported, if not default it to + * UYVY8 as it's supported by both TXes. + */ + if (!adv748x_csi2_is_fmt_supported(tx, sdformat->format.code)) + sdformat->format.code = MEDIA_BUS_FMT_UYVY8_1X16; + mbusformat = adv748x_csi2_get_pad_format(sd, sd_state, sdformat->pad, sdformat->which); if (!mbusformat)