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Commit 6930afdc authored by Steve Longerbeam's avatar Steve Longerbeam Committed by Philipp Zabel
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gpu: ipu-v3: Add ipu_stride_to_bytes() 



Adds ipu_stride_to_bytes(), which converts a pixel stride to bytes,
suitable for passing to cpmem.

Signed-off-by: default avatarSteve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent e7268c69

drivers/gpu/ipu-v3/ipu-common.c

+30 −0
Original line number Diff line number Diff line
@@ -126,6 +126,36 @@ enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code) 
}

EXPORT_SYMBOL_GPL(ipu_mbus_code_to_colorspace);



int ipu_stride_to_bytes(u32 pixel_stride, u32 pixelformat)

{

	switch (pixelformat) {

	case V4L2_PIX_FMT_YUV420:

	case V4L2_PIX_FMT_YVU420:

		/*

		 * for the planar YUV formats, the stride passed to

		 * cpmem must be the stride in bytes of the Y plane.

		 * And all the planar YUV formats have an 8-bit

		 * Y component.

		 */

		return (8 * pixel_stride) >> 3;

	case V4L2_PIX_FMT_RGB565:

	case V4L2_PIX_FMT_YUYV:

	case V4L2_PIX_FMT_UYVY:

		return (16 * pixel_stride) >> 3;

	case V4L2_PIX_FMT_BGR24:

	case V4L2_PIX_FMT_RGB24:

		return (24 * pixel_stride) >> 3;

	case V4L2_PIX_FMT_BGR32:

	case V4L2_PIX_FMT_RGB32:

		return (32 * pixel_stride) >> 3;

	default:

		break;

	}



	return -EINVAL;

}

EXPORT_SYMBOL_GPL(ipu_stride_to_bytes);



int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees,

			    bool hflip, bool vflip)

{

include/video/imx-ipu-v3.h

+1 −0
Original line number Diff line number Diff line
@@ -333,6 +333,7 @@ int ipu_smfc_set_watermark(struct ipu_smfc *smfc, u32 set_level, u32 clr_level); 
enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc);

enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat);

enum ipu_color_space ipu_mbus_code_to_colorspace(u32 mbus_code);

int ipu_stride_to_bytes(u32 pixel_stride, u32 pixelformat);

bool ipu_pixelformat_is_planar(u32 pixelformat);

int ipu_degrees_to_rot_mode(enum ipu_rotate_mode *mode, int degrees,

			    bool hflip, bool vflip);