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Date: Wed, 27 Apr 2022 21:28:46 +0200
From: Jernej Škrabec <jernej.skrabec@...il.com>
To: linux-kernel@...r.kernel.org, linux-media@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Cc: Yong Deng <yong.deng@...ewell.com>,
Paul Kocialkowski <paul.kocialkowski@...tlin.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Chen-Yu Tsai <wens@...e.org>,
Samuel Holland <samuel@...lland.org>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Maxime Ripard <mripard@...nel.org>,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v4 25/45] media: sun6i-csi: Rework capture format management with helper
Dne petek, 15. april 2022 ob 17:27:51 CEST je Paul Kocialkowski napisal(a):
> Remove the need for local copies of the v4l2 format and add a common
> helper to prepare a format compatible with the driver, using the
> relevant v4l2 helpers.
>
> Report a raw colorspace for bayer-encoded pixel formats instead of SRGB.
> Also cleanup the size bound defines while at it.
>
> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Acked-by: Jernej Skrabec <jernej.skrabec@...il.com>
Best regards,
Jernej
> ---
> .../sunxi/sun6i-csi/sun6i_csi_capture.c | 122 +++++++++---------
> .../sunxi/sun6i-csi/sun6i_csi_capture.h | 5 +
> 2 files changed, 66 insertions(+), 61 deletions(-)
>
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
> b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c index
> c1d3b352d988..2aa65a4ddb85 100644
> --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.c
> @@ -20,12 +20,6 @@
> #include "sun6i_csi_capture.h"
> #include "sun6i_csi_reg.h"
>
> -/* This is got from BSP sources. */
> -#define MIN_WIDTH (32)
> -#define MIN_HEIGHT (32)
> -#define MAX_WIDTH (4800)
> -#define MAX_HEIGHT (4800)
> -
> /* Helpers */
>
> void sun6i_csi_capture_dimensions(struct sun6i_csi_device *csi_dev,
> @@ -833,6 +827,55 @@ static const struct vb2_ops sun6i_csi_capture_queue_ops
> = {
>
> /* V4L2 Device */
>
> +static void sun6i_csi_capture_format_prepare(struct v4l2_format *format)
> +{
> + struct v4l2_pix_format *pix_format = &format->fmt.pix;
> + const struct v4l2_format_info *info;
> + unsigned int width, height;
> +
> + v4l_bound_align_image(&pix_format->width,
SUN6I_CSI_CAPTURE_WIDTH_MIN,
> + SUN6I_CSI_CAPTURE_WIDTH_MAX, 1,
> + &pix_format->height,
SUN6I_CSI_CAPTURE_HEIGHT_MIN,
> + SUN6I_CSI_CAPTURE_HEIGHT_MAX, 1, 0);
> +
> + if (!sun6i_csi_capture_format_check(pix_format->pixelformat))
> + pix_format->pixelformat = sun6i_csi_capture_formats[0];
> +
> + width = pix_format->width;
> + height = pix_format->height;
> +
> + info = v4l2_format_info(pix_format->pixelformat);
> +
> + switch (pix_format->pixelformat) {
> + case V4L2_PIX_FMT_NV12_16L16:
> + pix_format->bytesperline = width * 12 / 8;
> + pix_format->sizeimage = pix_format->bytesperline *
height;
> + break;
> + case V4L2_PIX_FMT_JPEG:
> + pix_format->bytesperline = width;
> + pix_format->sizeimage = pix_format->bytesperline *
height;
> + break;
> + default:
> + v4l2_fill_pixfmt(pix_format, pix_format->pixelformat,
> + width, height);
> + break;
> + }
> +
> + if (pix_format->field == V4L2_FIELD_ANY)
> + pix_format->field = V4L2_FIELD_NONE;
> +
> + if (pix_format->pixelformat == V4L2_PIX_FMT_JPEG)
> + pix_format->colorspace = V4L2_COLORSPACE_JPEG;
> + else if (info && info->pixel_enc == V4L2_PIXEL_ENC_BAYER)
> + pix_format->colorspace = V4L2_COLORSPACE_RAW;
> + else
> + pix_format->colorspace = V4L2_COLORSPACE_SRGB;
> +
> + pix_format->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
> + pix_format->quantization = V4L2_QUANTIZATION_DEFAULT;
> + pix_format->xfer_func = V4L2_XFER_FUNC_DEFAULT;
> +}
> +
> static int sun6i_csi_capture_querycap(struct file *file, void *private,
> struct v4l2_capability
*capability)
> {
> @@ -864,54 +907,8 @@ static int sun6i_csi_capture_g_fmt(struct file *file,
> void *private, struct v4l2_format *format)
> {
> struct sun6i_csi_device *csi_dev = video_drvdata(file);
> - struct sun6i_csi_capture *capture = &csi_dev->capture;
>
> - *format = capture->format;
> -
> - return 0;
> -}
> -
> -static int sun6i_csi_capture_format_try(struct sun6i_csi_capture *capture,
> - struct v4l2_format
*format)
> -{
> - struct v4l2_pix_format *pix_format = &format->fmt.pix;
> - int bpp;
> -
> - if (!sun6i_csi_capture_format_check(pix_format->pixelformat))
> - pix_format->pixelformat = sun6i_csi_capture_formats[0];
> -
> - v4l_bound_align_image(&pix_format->width, MIN_WIDTH, MAX_WIDTH, 1,
> - &pix_format->height, MIN_HEIGHT,
MAX_WIDTH, 1, 1);
> -
> - bpp = sun6i_csi_get_bpp(pix_format->pixelformat);
> - pix_format->bytesperline = (pix_format->width * bpp) >> 3;
> - pix_format->sizeimage = pix_format->bytesperline * pix_format-
>height;
> -
> - if (pix_format->field == V4L2_FIELD_ANY)
> - pix_format->field = V4L2_FIELD_NONE;
> -
> - if (pix_format->pixelformat == V4L2_PIX_FMT_JPEG)
> - pix_format->colorspace = V4L2_COLORSPACE_JPEG;
> - else
> - pix_format->colorspace = V4L2_COLORSPACE_SRGB;
> -
> - pix_format->ycbcr_enc = V4L2_YCBCR_ENC_DEFAULT;
> - pix_format->quantization = V4L2_QUANTIZATION_DEFAULT;
> - pix_format->xfer_func = V4L2_XFER_FUNC_DEFAULT;
> -
> - return 0;
> -}
> -
> -static int sun6i_csi_capture_format_set(struct sun6i_csi_capture *capture,
> - struct v4l2_format
*format)
> -{
> - int ret;
> -
> - ret = sun6i_csi_capture_format_try(capture, format);
> - if (ret)
> - return ret;
> -
> - capture->format = *format;
> + *format = csi_dev->capture.format;
>
> return 0;
> }
> @@ -925,16 +922,19 @@ static int sun6i_csi_capture_s_fmt(struct file *file,
> void *private, if (vb2_is_busy(&capture->queue))
> return -EBUSY;
>
> - return sun6i_csi_capture_format_set(capture, format);
> + sun6i_csi_capture_format_prepare(format);
> +
> + csi_dev->capture.format = *format;
> +
> + return 0;
> }
>
> static int sun6i_csi_capture_try_fmt(struct file *file, void *private,
> struct v4l2_format *format)
> {
> - struct sun6i_csi_device *csi_dev = video_drvdata(file);
> - struct sun6i_csi_capture *capture = &csi_dev->capture;
> + sun6i_csi_capture_format_prepare(format);
>
> - return sun6i_csi_capture_format_try(capture, format);
> + return 0;
> }
>
> static int sun6i_csi_capture_enum_input(struct file *file, void *private,
> @@ -1129,8 +1129,8 @@ int sun6i_csi_capture_setup(struct sun6i_csi_device
> *csi_dev) struct video_device *video_dev = &capture->video_dev;
> struct vb2_queue *queue = &capture->queue;
> struct media_pad *pad = &capture->pad;
> - struct v4l2_format format = { 0 };
> - struct v4l2_pix_format *pix_format = &format.fmt.pix;
> + struct v4l2_format *format = &csi_dev->capture.format;
> + struct v4l2_pix_format *pix_format = &format->fmt.pix;
> int ret;
>
> /* State */
> @@ -1173,13 +1173,13 @@ int sun6i_csi_capture_setup(struct sun6i_csi_device
> *csi_dev)
>
> /* V4L2 Format */
>
> - format.type = queue->type;
> + format->type = queue->type;
> pix_format->pixelformat = sun6i_csi_capture_formats[0];
> pix_format->width = 1280;
> pix_format->height = 720;
> pix_format->field = V4L2_FIELD_NONE;
>
> - sun6i_csi_capture_format_set(capture, &format);
> + sun6i_csi_capture_format_prepare(format);
>
> /* Video Device */
>
> diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.h
> b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.h index
> 935f35b7049a..02bdf45f7ca5 100644
> --- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.h
> +++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_capture.h
> @@ -11,6 +11,11 @@
> #include <media/v4l2-dev.h>
> #include <media/videobuf2-core.h>
>
> +#define SUN6I_CSI_CAPTURE_WIDTH_MIN 32
> +#define SUN6I_CSI_CAPTURE_WIDTH_MAX 4800
> +#define SUN6I_CSI_CAPTURE_HEIGHT_MIN 32
> +#define SUN6I_CSI_CAPTURE_HEIGHT_MAX 4800
> +
> struct sun6i_csi_device;
>
> #undef current
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