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Date: Thu, 17 Sep 2020 11:58:16 +0200
From: Hans Verkuil <hverkuil@...all.nl>
To: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
Niklas Söderlund <niklas.soderlund@...natech.se>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
linux-media@...r.kernel.org, linux-renesas-soc@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
Prabhakar <prabhakar.csengg@...il.com>
Subject: Re: [PATCH v3] media: rcar-vin: Enable YDS bit depending on bus_width
and data_shift
On 17/09/2020 10:57, Hans Verkuil wrote:
> Hi Prabhakar,
>
> Can you rebase this patch? It no longer applies.
Never mind, my mistake. When I was preparing this patch I also had this patch
applied: https://patchwork.linuxtv.org/project/linux-media/patch/1595602732-25582-3-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com/
And that caused the conflict with this YDS patch.
However, I backed out the two renesas-vin-ycbcr-8b-g patches since there were a
bunch comments for https://patchwork.linuxtv.org/project/linux-media/patch/1595602732-25582-2-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com/
So after dropping those two patches this YDS patch now applies fine and will
be included in the PR.
Sorry for the confusion,
Hans
>
> Regards,
>
> Hans
>
> On 13/09/2020 20:16, 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@...renesas.com>
>> Reviewed-by: Biju Das <biju.das.jz@...renesas.com>
>> ---
>> 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");
>> + 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 &&
>> + 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;
>>
>> unsigned int source_pad;
>> unsigned int sink_pad;
>>
>
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