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Subject[PATCH 20/20] media: sun6i: Convert to the image format API
Date
The image format API allows us to remove some of the computation we need to
handle the various video formats.

Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c | 89 ++---------
drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h | 49 +------
drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h | 6 +-
drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c | 11 +-
4 files changed, 31 insertions(+), 124 deletions(-)

diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
index 4c79eb64a7a7..cad90d4528f8 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.c
@@ -10,6 +10,7 @@
#include <linux/dma-mapping.h>
#include <linux/err.h>
#include <linux/fs.h>
+#include <linux/image-formats.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/ioctl.h>
@@ -497,72 +498,27 @@ static void sun6i_csi_set_format(struct sun6i_csi_dev *sdev)
static void sun6i_csi_set_window(struct sun6i_csi_dev *sdev)
{
struct sun6i_csi_config *config = &sdev->csi.config;
- u32 bytesperline_y;
- u32 bytesperline_c;
+ const struct image_format_info *info =
+ image_format_v4l2_lookup(config->pixelformat);
int *planar_offset = sdev->planar_offset;
- u32 width = config->width;
- u32 height = config->height;
- u32 hor_len = width;
+ u32 bytesperline_y = image_format_info_plane_stride(info, config->width, 0);
+ u32 bytesperline_c = image_format_info_plane_stride(info, config->width, 1);
+ unsigned int offset, i;

- switch (config->pixelformat) {
- case V4L2_PIX_FMT_YUYV:
- case V4L2_PIX_FMT_YVYU:
- case V4L2_PIX_FMT_UYVY:
- case V4L2_PIX_FMT_VYUY:
- dev_dbg(sdev->dev,
- "Horizontal length should be 2 times of width for packed YUV formats!\n");
- hor_len = width * 2;
- break;
- default:
- break;
+ offset = 0;
+ for (i = 0; i < info->num_planes; i++) {
+ planar_offset[i] = offset;
+
+ offset += image_format_info_plane_size(info, config->width,
+ config->height, i);
}

regmap_write(sdev->regmap, CSI_CH_HSIZE_REG,
- CSI_CH_HSIZE_HOR_LEN(hor_len) |
+ CSI_CH_HSIZE_HOR_LEN(bytesperline_c) |
CSI_CH_HSIZE_HOR_START(0));
regmap_write(sdev->regmap, CSI_CH_VSIZE_REG,
- CSI_CH_VSIZE_VER_LEN(height) |
+ CSI_CH_VSIZE_VER_LEN(config->height) |
CSI_CH_VSIZE_VER_START(0));
-
- planar_offset[0] = 0;
- switch (config->pixelformat) {
- case V4L2_PIX_FMT_HM12:
- case V4L2_PIX_FMT_NV12:
- case V4L2_PIX_FMT_NV21:
- case V4L2_PIX_FMT_NV16:
- case V4L2_PIX_FMT_NV61:
- bytesperline_y = width;
- bytesperline_c = width;
- planar_offset[1] = bytesperline_y * height;
- planar_offset[2] = -1;
- break;
- case V4L2_PIX_FMT_YUV420:
- case V4L2_PIX_FMT_YVU420:
- bytesperline_y = width;
- bytesperline_c = width / 2;
- planar_offset[1] = bytesperline_y * height;
- planar_offset[2] = planar_offset[1] +
- bytesperline_c * height / 2;
- break;
- case V4L2_PIX_FMT_YUV422P:
- bytesperline_y = width;
- bytesperline_c = width / 2;
- planar_offset[1] = bytesperline_y * height;
- planar_offset[2] = planar_offset[1] +
- bytesperline_c * height;
- break;
- default: /* raw */
- dev_dbg(sdev->dev,
- "Calculating pixelformat(0x%x)'s bytesperline as a packed format\n",
- config->pixelformat);
- bytesperline_y = (sun6i_csi_get_bpp(config->pixelformat) *
- config->width) / 8;
- bytesperline_c = 0;
- planar_offset[1] = -1;
- planar_offset[2] = -1;
- break;
- }
-
regmap_write(sdev->regmap, CSI_CH_BUF_LEN_REG,
CSI_CH_BUF_LEN_BUF_LEN_C(bytesperline_c) |
CSI_CH_BUF_LEN_BUF_LEN_Y(bytesperline_y));
@@ -588,15 +544,16 @@ int sun6i_csi_update_config(struct sun6i_csi *csi,
void sun6i_csi_update_buf_addr(struct sun6i_csi *csi, dma_addr_t addr)
{
struct sun6i_csi_dev *sdev = sun6i_csi_to_dev(csi);
+ struct sun6i_csi_config *config = &sdev->csi.config;
+ const struct image_format_info *info =
+ image_format_v4l2_lookup(config->pixelformat);
+ unsigned int i;
+
+ for (i = 0; i < info->num_planes; i++) {
+ regmap_write(sdev->regmap, CSI_CH_BUF_REG(i, 0),
+ (addr + sdev->planar_offset[i]) >> 2);

- regmap_write(sdev->regmap, CSI_CH_F0_BUFA_REG,
- (addr + sdev->planar_offset[0]) >> 2);
- if (sdev->planar_offset[1] != -1)
- regmap_write(sdev->regmap, CSI_CH_F1_BUFA_REG,
- (addr + sdev->planar_offset[1]) >> 2);
- if (sdev->planar_offset[2] != -1)
- regmap_write(sdev->regmap, CSI_CH_F2_BUFA_REG,
- (addr + sdev->planar_offset[2]) >> 2);
+ }
}

void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable)
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
index c626821aaedb..f3472d8821ab 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi.h
@@ -86,53 +86,4 @@ void sun6i_csi_update_buf_addr(struct sun6i_csi *csi, dma_addr_t addr);
*/
void sun6i_csi_set_stream(struct sun6i_csi *csi, bool enable);

-/* get bpp form v4l2 pixformat */
-static inline int sun6i_csi_get_bpp(unsigned int pixformat)
-{
- switch (pixformat) {
- case V4L2_PIX_FMT_SBGGR8:
- case V4L2_PIX_FMT_SGBRG8:
- case V4L2_PIX_FMT_SGRBG8:
- case V4L2_PIX_FMT_SRGGB8:
- case V4L2_PIX_FMT_JPEG:
- return 8;
- case V4L2_PIX_FMT_SBGGR10:
- case V4L2_PIX_FMT_SGBRG10:
- case V4L2_PIX_FMT_SGRBG10:
- case V4L2_PIX_FMT_SRGGB10:
- return 10;
- case V4L2_PIX_FMT_SBGGR12:
- case V4L2_PIX_FMT_SGBRG12:
- case V4L2_PIX_FMT_SGRBG12:
- case V4L2_PIX_FMT_SRGGB12:
- case V4L2_PIX_FMT_HM12:
- case V4L2_PIX_FMT_NV12:
- case V4L2_PIX_FMT_NV21:
- case V4L2_PIX_FMT_YUV420:
- case V4L2_PIX_FMT_YVU420:
- return 12;
- case V4L2_PIX_FMT_YUYV:
- case V4L2_PIX_FMT_YVYU:
- case V4L2_PIX_FMT_UYVY:
- case V4L2_PIX_FMT_VYUY:
- case V4L2_PIX_FMT_NV16:
- case V4L2_PIX_FMT_NV61:
- case V4L2_PIX_FMT_YUV422P:
- case V4L2_PIX_FMT_RGB565:
- case V4L2_PIX_FMT_RGB565X:
- return 16;
- case V4L2_PIX_FMT_RGB24:
- case V4L2_PIX_FMT_BGR24:
- return 24;
- case V4L2_PIX_FMT_RGB32:
- case V4L2_PIX_FMT_BGR32:
- return 32;
- default:
- WARN(1, "Unsupported pixformat: 0x%x\n", pixformat);
- break;
- }
-
- return 0;
-}
-
#endif /* __SUN6I_CSI_H__ */
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h
index 703fa14bb313..7c19d2bcbd7c 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_csi_reg.h
@@ -74,11 +74,7 @@
#define CSI_CH_SCALE_REG 0x4c
#define CSI_CH_SCALE_QUART_EN BIT(0)

-#define CSI_CH_F0_BUFA_REG 0x50
-
-#define CSI_CH_F1_BUFA_REG 0x58
-
-#define CSI_CH_F2_BUFA_REG 0x60
+#define CSI_CH_BUF_REG(plane, chan) (0x50 + (plane) * 8 + (chan) * 4)

#define CSI_CH_STA_REG 0x6c
#define CSI_CH_STA_FIELD_STA_MASK BIT(2)
diff --git a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
index f0dfe68486d1..0c783140c3a0 100644
--- a/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
+++ b/drivers/media/platform/sunxi/sun6i-csi/sun6i_video.c
@@ -5,6 +5,7 @@
* Author: Yong Deng <yong.deng@magewell.com>
*/

+#include <linux/image-formats.h>
#include <linux/of.h>

#include <media/v4l2-device.h>
@@ -351,17 +352,19 @@ static int sun6i_video_try_fmt(struct sun6i_video *video,
struct v4l2_format *f)
{
struct v4l2_pix_format *pixfmt = &f->fmt.pix;
- int bpp;
+ const struct image_format_info *info;

if (!is_pixformat_valid(pixfmt->pixelformat))
pixfmt->pixelformat = supported_pixformats[0];

+ info = image_format_v4l2_lookup(pixfmt->pixelformat);
+
v4l_bound_align_image(&pixfmt->width, MIN_WIDTH, MAX_WIDTH, 1,
&pixfmt->height, MIN_HEIGHT, MAX_WIDTH, 1, 1);

- bpp = sun6i_csi_get_bpp(pixfmt->pixelformat);
- pixfmt->bytesperline = (pixfmt->width * bpp) >> 3;
- pixfmt->sizeimage = pixfmt->bytesperline * pixfmt->height;
+ pixfmt->bytesperline = image_format_info_plane_stride(info, pixfmt->width, 0);
+ pixfmt->sizeimage = image_format_info_plane_size(info, pixfmt->width,
+ pixfmt->height, 0);

if (pixfmt->field == V4L2_FIELD_ANY)
pixfmt->field = V4L2_FIELD_NONE;
--
git-series 0.9.1
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