Hi Thomas,
On Wed, Jul 27, 2022 at 01:33:04PM +0200, Thomas Zimmermann wrote:
> Update XRGB8888-to-RGB332 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>
I am not going to repeat my naming rant here, so
Reviewed-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_format_helper.c | 25 ++++++++++++++-----
> drivers/gpu/drm/gud/gud_pipe.c | 2 +-
> .../gpu/drm/tests/drm_format_helper_test.c | 14 ++++++-----
> include/drm/drm_format_helper.h | 5 ++--
> 4 files changed, 31 insertions(+), 15 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
> index fa22d3cb11e8..2b5c3746ff4a 100644
> --- a/drivers/gpu/drm/drm_format_helper.c
> +++ b/drivers/gpu/drm/drm_format_helper.c
> @@ -265,18 +265,31 @@ static void drm_fb_xrgb8888_to_rgb332_line(void *dbuf, const void *sbuf, unsigne
>
> /**
> * drm_fb_xrgb8888_to_rgb332 - Convert XRGB8888 to RGB332 clip buffer
> - * @dst: RGB332 destination buffer
> - * @dst_pitch: Number of bytes between two consecutive scanlines within dst
> - * @src: XRGB8888 source buffer
> + * @dst: Array of RGB332 destination buffers
> + * @dst_pitch: Array of numbers of bytes between two consecutive scanlines within dst
> + * @vmap: Array of XRGB8888 source buffers
> * @fb: DRM framebuffer
> * @clip: Clip rectangle area to copy
> *
> * Drivers can use this function for RGB332 devices that don't natively support XRGB8888.
> */
> -void drm_fb_xrgb8888_to_rgb332(void *dst, unsigned int dst_pitch, const void *src,
> - const struct drm_framebuffer *fb, const struct drm_rect *clip)
> +void drm_fb_xrgb8888_to_rgb332(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, src, fb, clip, false, drm_fb_xrgb8888_to_rgb332_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_rgb332_line);
> + else
> + drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], 1, vmap[0].vaddr, fb, clip,
> + false, drm_fb_xrgb8888_to_rgb332_line);
> }
> EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb332);
>
> diff --git a/drivers/gpu/drm/gud/gud_pipe.c b/drivers/gpu/drm/gud/gud_pipe.c
> index a15cda9ba058..426a3ae6cc50 100644
> --- a/drivers/gpu/drm/gud/gud_pipe.c
> +++ b/drivers/gpu/drm/gud/gud_pipe.c
> @@ -196,7 +196,7 @@ static int gud_prep_flush(struct gud_device *gdrm, struct drm_framebuffer *fb,
> } else if (format->format == DRM_FORMAT_R8) {
> drm_fb_xrgb8888_to_gray8(buf, 0, vaddr, fb, rect);
> } else if (format->format == DRM_FORMAT_RGB332) {
> - drm_fb_xrgb8888_to_rgb332(buf, 0, vaddr, fb, rect);
> + drm_fb_xrgb8888_to_rgb332(&dst, NULL, map_data, fb, rect);
> } else if (format->format == DRM_FORMAT_RGB565) {
> drm_fb_xrgb8888_to_rgb565(buf, 0, vaddr, fb, rect, gud_is_big_endian());
> } else if (format->format == DRM_FORMAT_RGB888) {
> diff --git a/drivers/gpu/drm/tests/drm_format_helper_test.c b/drivers/gpu/drm/tests/drm_format_helper_test.c
> index 98583bf56044..b74dba06f704 100644
> --- a/drivers/gpu/drm/tests/drm_format_helper_test.c
> +++ b/drivers/gpu/drm/tests/drm_format_helper_test.c
> @@ -124,7 +124,8 @@ static void xrgb8888_to_rgb332_test(struct kunit *test)
> {
> const struct xrgb8888_to_rgb332_case *params = test->param_value;
> size_t dst_size;
> - __u8 *dst = NULL;
> + struct iosys_map dst, xrgb8888;
> + __u8 *buf = NULL;
>
> struct drm_framebuffer fb = {
> .format = drm_format_info(DRM_FORMAT_XRGB8888),
> @@ -135,12 +136,13 @@ static void xrgb8888_to_rgb332_test(struct kunit *test)
> ¶ms->clip);
> KUNIT_ASSERT_GT(test, dst_size, 0);
>
> - dst = kunit_kzalloc(test, dst_size, GFP_KERNEL);
> - KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dst);
> + buf = kunit_kzalloc(test, dst_size, GFP_KERNEL);
> + KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
>
> - drm_fb_xrgb8888_to_rgb332(dst, params->dst_pitch, params->xrgb8888,
> - &fb, ¶ms->clip);
> - KUNIT_EXPECT_EQ(test, memcmp(dst, params->expected, dst_size), 0);
> + iosys_map_set_vaddr(&dst, buf);
> + iosys_map_set_vaddr(&xrgb8888, (void __force *)params->xrgb8888);
> + drm_fb_xrgb8888_to_rgb332(&dst, ¶ms->dst_pitch, &xrgb8888, &fb, ¶ms->clip);
> + KUNIT_EXPECT_EQ(test, memcmp(buf, params->expected, dst_size), 0);
> }
>
> static struct kunit_case drm_format_helper_test_cases[] = {
> diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h
> index 60944feaa936..3c28f099e3ed 100644
> --- a/include/drm/drm_format_helper.h
> +++ b/include/drm/drm_format_helper.h
> @@ -20,8 +20,9 @@ void drm_fb_memcpy(struct iosys_map *dst, const unsigned int *dst_pitch,
> void drm_fb_swab(struct iosys_map *dst, const unsigned int *dst_pitch,
> const struct iosys_map *vmap, const struct drm_framebuffer *fb,
> const struct drm_rect *clip, bool cached);
> -void drm_fb_xrgb8888_to_rgb332(void *dst, unsigned int dst_pitch, const void *vaddr,
> - const struct drm_framebuffer *fb, const struct drm_rect *clip);
> +void drm_fb_xrgb8888_to_rgb332(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_rgb565(void *dst, unsigned int dst_pitch, const void *vaddr,
> const struct drm_framebuffer *fb, const struct drm_rect *clip,
> bool swab);
> --
> 2.37.1
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