On Wed, Jul 27, 2022 at 01:33:10PM +0200, Thomas Zimmermann wrote:
> Update XRGB8888-to-GRAY8 conversion to support struct iosys_map
> and convert all users. Although these are single-plane color formats,
> the new interface supports multi-plane formats for consistency with
> drm_fb_blit().
>
> Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
Reviewed-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_format_helper.c | 25 +++++++++++++++++++------
> drivers/gpu/drm/gud/gud_pipe.c | 7 +++++--
> drivers/gpu/drm/tiny/st7586.c | 5 ++++-
> include/drm/drm_format_helper.h | 5 +++--
> 4 files changed, 31 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
> index 209f63b66c5f..521932fac491 100644
> --- a/drivers/gpu/drm/drm_format_helper.c
> +++ b/drivers/gpu/drm/drm_format_helper.c
> @@ -552,9 +552,9 @@ static void drm_fb_xrgb8888_to_gray8_line(void *dbuf, const void *sbuf, unsigned
>
> /**
> * drm_fb_xrgb8888_to_gray8 - Convert XRGB8888 to grayscale
> - * @dst: 8-bit grayscale destination buffer
> - * @dst_pitch: Number of bytes between two consecutive scanlines within dst
> - * @vaddr: XRGB8888 source buffer
> + * @dst: Array of 8-bit grayscale destination buffers
> + * @dst_pitch: Array of number of bytes between two consecutive scanlines within dst
> + * @vmap: Array of XRGB8888 source buffers
> * @fb: DRM framebuffer
> * @clip: Clip rectangle area to copy
> *
> @@ -567,10 +567,23 @@ static void drm_fb_xrgb8888_to_gray8_line(void *dbuf, const void *sbuf, unsigned
> *
> * ITU BT.601 is used for the RGB -> luma (brightness) conversion.
> */
> -void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void *vaddr,
> - const struct drm_framebuffer *fb, const struct drm_rect *clip)
> +void drm_fb_xrgb8888_to_gray8(struct iosys_map *dst, const unsigned int *dst_pitch,
> + const struct iosys_map *vmap, const struct drm_framebuffer *fb,
> + const struct drm_rect *clip)
> {
> - drm_fb_xfrm(dst, dst_pitch, 1, vaddr, fb, clip, false, drm_fb_xrgb8888_to_gray8_line);
> + static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = {
> + 0, 0, 0, 0
> + };
> +
> + if (!dst_pitch)
> + dst_pitch = default_dst_pitch;
> +
> + if (dst[0].is_iomem)
> + drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], 1, vmap[0].vaddr, fb,
> + clip, false, drm_fb_xrgb8888_to_gray8_line);
> + else
> + drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], 1, vmap[0].vaddr, fb,
> + clip, false, drm_fb_xrgb8888_to_gray8_line);
> }
> EXPORT_SYMBOL(drm_fb_xrgb8888_to_gray8);
>
> diff --git a/drivers/gpu/drm/gud/gud_pipe.c b/drivers/gpu/drm/gud/gud_pipe.c
> index 0caa228f736d..7c6dc2bcd14a 100644
> --- a/drivers/gpu/drm/gud/gud_pipe.c
> +++ b/drivers/gpu/drm/gud/gud_pipe.c
> @@ -59,6 +59,7 @@ static size_t gud_xrgb8888_to_r124(u8 *dst, const struct drm_format_info *format
> unsigned int bits_per_pixel = 8 / block_width;
> unsigned int x, y, width, height;
> u8 pix, *pix8, *block = dst; /* Assign to silence compiler warning */
> + struct iosys_map dst_map, vmap;
> size_t len;
> void *buf;
>
> @@ -74,7 +75,9 @@ static size_t gud_xrgb8888_to_r124(u8 *dst, const struct drm_format_info *format
> if (!buf)
> return 0;
>
> - drm_fb_xrgb8888_to_gray8(buf, 0, src, fb, rect);
> + iosys_map_set_vaddr(&dst_map, buf);
> + iosys_map_set_vaddr(&vmap, src);
> + drm_fb_xrgb8888_to_gray8(&dst_map, NULL, &vmap, fb, rect);
> pix8 = buf;
>
> for (y = 0; y < height; y++) {
> @@ -194,7 +197,7 @@ static int gud_prep_flush(struct gud_device *gdrm, struct drm_framebuffer *fb,
> goto end_cpu_access;
> }
> } else if (format->format == DRM_FORMAT_R8) {
> - drm_fb_xrgb8888_to_gray8(buf, 0, vaddr, fb, rect);
> + drm_fb_xrgb8888_to_gray8(&dst, NULL, map_data, fb, rect);
> } else if (format->format == DRM_FORMAT_RGB332) {
> drm_fb_xrgb8888_to_rgb332(&dst, NULL, map_data, fb, rect);
> } else if (format->format == DRM_FORMAT_RGB565) {
> diff --git a/drivers/gpu/drm/tiny/st7586.c b/drivers/gpu/drm/tiny/st7586.c
> index 8eddb020c43e..702350d0f8bc 100644
> --- a/drivers/gpu/drm/tiny/st7586.c
> +++ b/drivers/gpu/drm/tiny/st7586.c
> @@ -69,12 +69,15 @@ static void st7586_xrgb8888_to_gray332(u8 *dst, void *vaddr,
> size_t len = (clip->x2 - clip->x1) * (clip->y2 - clip->y1);
> unsigned int x, y;
> u8 *src, *buf, val;
> + struct iosys_map dst_map, vmap;
>
> buf = kmalloc(len, GFP_KERNEL);
> if (!buf)
> return;
>
> - drm_fb_xrgb8888_to_gray8(buf, 0, vaddr, fb, clip);
> + iosys_map_set_vaddr(&dst_map, buf);
> + iosys_map_set_vaddr(&vmap, vaddr);
> + drm_fb_xrgb8888_to_gray8(&dst_map, NULL, &vmap, fb, clip);
> src = buf;
>
> for (y = clip->y1; y < clip->y2; y++) {
> diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h
> index 6807440ce29c..68087c982497 100644
> --- a/include/drm/drm_format_helper.h
> +++ b/include/drm/drm_format_helper.h
> @@ -32,8 +32,9 @@ void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int *dst_pi
> void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int *dst_pitch,
> const struct iosys_map *vmap, const struct drm_framebuffer *fb,
> const struct drm_rect *clip);
> -void drm_fb_xrgb8888_to_gray8(void *dst, unsigned int dst_pitch, const void *vaddr,
> - const struct drm_framebuffer *fb, const struct drm_rect *clip);
> +void drm_fb_xrgb8888_to_gray8(struct iosys_map *dst, const unsigned int *dst_pitch,
> + const struct iosys_map *vmap, const struct drm_framebuffer *fb,
> + const struct drm_rect *clip);
>
> int drm_fb_blit(struct iosys_map *dst, const unsigned int *dst_pitch, uint32_t dst_format,
> const struct iosys_map *vmap, const struct drm_framebuffer *fb,
> --
> 2.37.1
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