Hi Lad, Thanks for your work. On 2020-09-15 02:45:32 +0300, Laurent Pinchart wrote: > Hi Prabhakar, > > Thank you for the patch. > > On Sun, Sep 13, 2020 at 07:16:08PM +0100, Lad Prabhakar wrote: > > Enable YDS bit if bus_width and data_shift is set to 8 in parallel mode > > for MEDIA_BUS_FMT_UYVY8_2X8 format. > > > > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> > > Reviewed-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx> > > --- > > Changes for v3: > > * Dropped BIT macro > > * Introduced struct v4l2_fwnode_bus_parallel > > > > Changes for v2: > > * Dropped DT binding documentation patch > > * Select the data pins depending on bus-width and data-shift > > > > v1 - > > https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=323799 > > --- > > drivers/media/platform/rcar-vin/rcar-core.c | 9 ++++----- > > drivers/media/platform/rcar-vin/rcar-dma.c | 17 ++++++++++++++--- > > drivers/media/platform/rcar-vin/rcar-vin.h | 5 +++-- > > 3 files changed, 21 insertions(+), 10 deletions(-) > > > > diff --git a/drivers/media/platform/rcar-vin/rcar-core.c b/drivers/media/platform/rcar-vin/rcar-core.c > > index 7440c8965d27..1149ab76cf5c 100644 > > --- a/drivers/media/platform/rcar-vin/rcar-core.c > > +++ b/drivers/media/platform/rcar-vin/rcar-core.c > > @@ -626,12 +626,11 @@ static int rvin_parallel_parse_v4l2(struct device *dev, > > > > switch (vin->parallel->mbus_type) { > > case V4L2_MBUS_PARALLEL: > > - vin_dbg(vin, "Found PARALLEL media bus\n"); > > - vin->parallel->mbus_flags = vep->bus.parallel.flags; > > - break; > > case V4L2_MBUS_BT656: > > - vin_dbg(vin, "Found BT656 media bus\n"); > > - vin->parallel->mbus_flags = 0; > > + vin_dbg(vin, "Found %s media bus\n", > > + vin->parallel->mbus_type == V4L2_MBUS_PARALLEL ? > > + "PARALLEL" : "BT656"); > > I'd write "parallel" and "BT.656". I agree with this change. > > > + vin->parallel->bus = vep->bus.parallel; > > break; > > default: > > vin_err(vin, "Unknown media bus type\n"); > > diff --git a/drivers/media/platform/rcar-vin/rcar-dma.c b/drivers/media/platform/rcar-vin/rcar-dma.c > > index a5dbb90c5210..d067439b0b0d 100644 > > --- a/drivers/media/platform/rcar-vin/rcar-dma.c > > +++ b/drivers/media/platform/rcar-vin/rcar-dma.c > > @@ -125,6 +125,7 @@ > > #define VNDMR2_VPS (1 << 30) > > #define VNDMR2_HPS (1 << 29) > > #define VNDMR2_CES (1 << 28) > > +#define VNDMR2_YDS (1 << 22) > > #define VNDMR2_FTEV (1 << 17) > > #define VNDMR2_VLV(n) ((n & 0xf) << 12) > > > > @@ -698,16 +699,26 @@ static int rvin_setup(struct rvin_dev *vin) > > > > if (!vin->is_csi) { > > /* Hsync Signal Polarity Select */ > > - if (!(vin->parallel->mbus_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) > > + if (!(vin->parallel->bus.flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) > > dmr2 |= VNDMR2_HPS; > > > > /* Vsync Signal Polarity Select */ > > - if (!(vin->parallel->mbus_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) > > + if (!(vin->parallel->bus.flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) > > dmr2 |= VNDMR2_VPS; > > > > /* Data Enable Polarity Select */ > > - if (vin->parallel->mbus_flags & V4L2_MBUS_DATA_ENABLE_LOW) > > + if (vin->parallel->bus.flags & V4L2_MBUS_DATA_ENABLE_LOW) > > dmr2 |= VNDMR2_CES; > > + > > + switch (vin->mbus_code) { > > + case MEDIA_BUS_FMT_UYVY8_2X8: > > + if (vin->parallel->bus.bus_width == 8 && > > You can possibly drop this check, as UYVY8_2X8 implies a bus_width equal > to 8. Apart from that, I agree here as well, I think the check for UYVY8_2X8 may be dropped. > > Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> > > > + vin->parallel->bus.data_shift == 8) > > + dmr2 |= VNDMR2_YDS; > > + break; > > + default: > > + break; > > + } > > } > > > > /* > > diff --git a/drivers/media/platform/rcar-vin/rcar-vin.h b/drivers/media/platform/rcar-vin/rcar-vin.h > > index c19d077ce1cb..8396e0e45478 100644 > > --- a/drivers/media/platform/rcar-vin/rcar-vin.h > > +++ b/drivers/media/platform/rcar-vin/rcar-vin.h > > @@ -19,6 +19,7 @@ > > #include <media/v4l2-ctrls.h> > > #include <media/v4l2-dev.h> > > #include <media/v4l2-device.h> > > +#include <media/v4l2-fwnode.h> > > #include <media/videobuf2-v4l2.h> > > > > /* Number of HW buffers */ > > @@ -92,7 +93,7 @@ struct rvin_video_format { > > * @asd: sub-device descriptor for async framework > > * @subdev: subdevice matched using async framework > > * @mbus_type: media bus type > > - * @mbus_flags: media bus configuration flags > > + * @bus: media bus parallel configuration > > * @source_pad: source pad of remote subdevice > > * @sink_pad: sink pad of remote subdevice > > * > > @@ -102,7 +103,7 @@ struct rvin_parallel_entity { > > struct v4l2_subdev *subdev; > > > > enum v4l2_mbus_type mbus_type; > > - unsigned int mbus_flags; > > + struct v4l2_fwnode_bus_parallel bus; I think you could break this change (and the fallout) out to a separate patch to make the functional change clearer. > > > > unsigned int source_pad; > > unsigned int sink_pad; > > -- > Regards, > > Laurent Pinchart -- Regards, Niklas Söderlund
