Hi Am 28.07.22 um 09:26 schrieb José Expósito:
Hi! On Wed, Jul 27, 2022 at 01:33:12PM +0200, Thomas Zimmermann wrote:The format-convertion helpers handle several cases for different values of destination buffer and pitch. Move that code into the internal helper drm_fb_xfrm() and avoid quite a bit of duplucation. Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx> --- drivers/gpu/drm/drm_format_helper.c | 169 +++++++++++----------------- 1 file changed, 64 insertions(+), 105 deletions(-) diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c index d296d181659d..35aebdb90165 100644 --- a/drivers/gpu/drm/drm_format_helper.c +++ b/drivers/gpu/drm/drm_format_helper.c @@ -41,11 +41,11 @@ unsigned int drm_fb_clip_offset(unsigned int pitch, const struct drm_format_info } EXPORT_SYMBOL(drm_fb_clip_offset);-/* TODO: Make this functon work with multi-plane formats. */-static int drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long dst_pixsize, - const void *vaddr, const struct drm_framebuffer *fb, - const struct drm_rect *clip, bool vaddr_cached_hint, - void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels)) +/* TODO: Make this function work with multi-plane formats. */ +static int __drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long dst_pixsize, + const void *vaddr, const struct drm_framebuffer *fb, + const struct drm_rect *clip, bool vaddr_cached_hint, + void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels)) { unsigned long linepixels = drm_rect_width(clip); unsigned long lines = drm_rect_height(clip); @@ -84,11 +84,11 @@ static int drm_fb_xfrm(void *dst, unsigned long dst_pitch, unsigned long dst_pix return 0; }-/* TODO: Make this functon work with multi-plane formats. */-static int drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch, unsigned long dst_pixsize, - const void *vaddr, const struct drm_framebuffer *fb, - const struct drm_rect *clip, bool vaddr_cached_hint, - void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels)) +/* TODO: Make this function work with multi-plane formats. */ +static int __drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch, unsigned long dst_pixsize, + const void *vaddr, const struct drm_framebuffer *fb, + const struct drm_rect *clip, bool vaddr_cached_hint, + void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels)) { unsigned long linepixels = drm_rect_width(clip); unsigned long lines = drm_rect_height(clip); @@ -129,6 +129,29 @@ static int drm_fb_xfrm_toio(void __iomem *dst, unsigned long dst_pitch, unsigned return 0; }+/* TODO: Make this function work with multi-plane formats. */+static int drm_fb_xfrm(struct iosys_map *dst, + const unsigned int *dst_pitch, const u8 *dst_pixsize, + const struct iosys_map *vmap, const struct drm_framebuffer *fb, + const struct drm_rect *clip, bool vaddr_cached_hint, + void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels)) +{ + 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) + return __drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], dst_pixsize[0], + vmap[0].vaddr, fb, clip, false, xfrm_line); + else + return __drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], dst_pixsize[0], + vmap[0].vaddr, fb, clip, false, xfrm_line); +} + +Nit: Extra blank line
Oh!
/** * drm_fb_memcpy - Copy clip buffer * @dst: Array of destination buffers @@ -213,14 +236,10 @@ 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) { - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { - 0, 0, 0, 0 - }; const struct drm_format_info *format = fb->format; - u8 cpp = format->cpp[0]; void (*swab_line)(void *dbuf, const void *sbuf, unsigned int npixels);- switch (cpp) {+ switch (format->cpp[0]) { case 4: swab_line = drm_fb_swab32_line; break; @@ -230,21 +249,10 @@ void drm_fb_swab(struct iosys_map *dst, const unsigned int *dst_pitch, default: drm_warn_once(fb->dev, "Format %p4cc has unsupported pixel size.\n", &format->format); - swab_line = NULL; - break; - } - if (!swab_line) return; + }- if (!dst_pitch)- dst_pitch = default_dst_pitch; - - if (dst->is_iomem) - drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], cpp, - vmap[0].vaddr, fb, clip, cached, swab_line); - else - drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], cpp, vmap[0].vaddr, fb, - clip, cached, swab_line); + drm_fb_xfrm(dst, dst_pitch, format->cpp, vmap, fb, clip, cached, swab_line); } EXPORT_SYMBOL(drm_fb_swab);@@ -277,19 +285,12 @@ void drm_fb_xrgb8888_to_rgb332(struct iosys_map *dst, const unsigned int *dst_piconst struct iosys_map *vmap, const struct drm_framebuffer *fb, const struct drm_rect *clip) { - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { - 0, 0, 0, 0 + static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { + 1, };Could "dst_pixsize" be obtained from "drm_format_info->cpp"? (in all conversion functions, not only in this one).
It could and I already considered it. But it would require a pointer to the destination format's info, which we don't yet have here. The info lookup is at [1], but it has linear complexity. So I was reluctant to use it.
The solution I have in mind is to pass in the dst format info from the calling driver. Drivers can look it up once and reuse it. But as that's a change to quite a few drivers, it's something for a separate patchset.
In general, we should make an effort to replace uses of 4CC codes with pointers to a format info.
Best regards Thomas[1] https://elixir.bootlin.com/linux/v5.18.14/source/drivers/gpu/drm/drm_fourcc.c#L132
I think they are similar structures, so we might be able to reuse that information.- 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); + drm_fb_xfrm(dst, dst_pitch, dst_pixsize, vmap, fb, clip, false, + drm_fb_xrgb8888_to_rgb332_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb332);@@ -344,9 +345,10 @@ void drm_fb_xrgb8888_to_rgb565(struct iosys_map *dst, const unsigned int *dst_piconst struct iosys_map *vmap, const struct drm_framebuffer *fb, const struct drm_rect *clip, bool swab) { - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { - 0, 0, 0, 0 + static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { + 2, }; + void (*xfrm_line)(void *dbuf, const void *sbuf, unsigned int npixels);if (swab)@@ -354,15 +356,7 @@ void drm_fb_xrgb8888_to_rgb565(struct iosys_map *dst, const unsigned int *dst_pi else xfrm_line = drm_fb_xrgb8888_to_rgb565_line;- if (!dst_pitch)- dst_pitch = default_dst_pitch; - - if (dst[0].is_iomem) - drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], 2, vmap[0].vaddr, fb, clip, - false, xfrm_line); - else - drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], 2, vmap[0].vaddr, fb, clip, - false, xfrm_line); + drm_fb_xfrm(dst, dst_pitch, dst_pixsize, vmap, fb, clip, false, xfrm_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb565);@@ -396,19 +390,12 @@ void drm_fb_xrgb8888_to_rgb888(struct iosys_map *dst, const unsigned int *dst_piconst struct iosys_map *vmap, const struct drm_framebuffer *fb, const struct drm_rect *clip) { - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { - 0, 0, 0, 0 + static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { + 3, };- if (!dst_pitch)- dst_pitch = default_dst_pitch; - - if (dst[0].is_iomem) - drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], 3, vmap[0].vaddr, fb, - clip, false, drm_fb_xrgb8888_to_rgb888_line); - else - drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], 3, vmap[0].vaddr, fb, - clip, false, drm_fb_xrgb8888_to_rgb888_line); + drm_fb_xfrm(dst, dst_pitch, dst_pixsize, vmap, fb, clip, false, + drm_fb_xrgb8888_to_rgb888_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_rgb888);@@ -435,19 +422,12 @@ static void drm_fb_rgb565_to_xrgb8888(struct iosys_map *dst, const unsigned intconst struct drm_framebuffer *fb, const struct drm_rect *clip) { - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { - 0, 0, 0, 0 + static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { + 4, };- if (!dst_pitch)- dst_pitch = default_dst_pitch; - - if (dst[0].is_iomem) - drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], 4, vmap[0].vaddr, fb, - clip, false, drm_fb_rgb565_to_xrgb8888_line); - else - drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], 4, vmap[0].vaddr, fb, - clip, false, drm_fb_rgb565_to_xrgb8888_line); + drm_fb_xfrm(dst, dst_pitch, dst_pixsize, vmap, fb, clip, false, + drm_fb_rgb565_to_xrgb8888_line); }static void drm_fb_rgb888_to_xrgb8888_line(void *dbuf, const void *sbuf, unsigned int pixels)@@ -470,19 +450,12 @@ static void drm_fb_rgb888_to_xrgb8888(struct iosys_map *dst, const unsigned int const struct drm_framebuffer *fb, const struct drm_rect *clip) { - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { - 0, 0, 0, 0 + static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { + 4, };- if (!dst_pitch)- dst_pitch = default_dst_pitch; - - if (dst[0].is_iomem) - drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], 4, vmap[0].vaddr, fb, - clip, false, drm_fb_rgb888_to_xrgb8888_line); - else - drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], 4, vmap[0].vaddr, fb, - clip, false, drm_fb_rgb888_to_xrgb8888_line); + drm_fb_xfrm(dst, dst_pitch, dst_pixsize, vmap, fb, clip, false, + drm_fb_rgb888_to_xrgb8888_line); }static void drm_fb_xrgb8888_to_xrgb2101010_line(void *dbuf, const void *sbuf, unsigned int pixels)@@ -518,19 +491,12 @@ void drm_fb_xrgb8888_to_xrgb2101010(struct iosys_map *dst, const unsigned int *d const struct iosys_map *vmap, const struct drm_framebuffer *fb, const struct drm_rect *clip) { - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { - 0, 0, 0, 0 + static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { + 4, };- if (!dst_pitch)- dst_pitch = default_dst_pitch; - - if (dst[0].is_iomem) - drm_fb_xfrm_toio(dst[0].vaddr_iomem, dst_pitch[0], 4, vmap[0].vaddr, fb, - clip, false, drm_fb_xrgb8888_to_xrgb2101010_line); - else - drm_fb_xfrm(dst[0].vaddr, dst_pitch[0], 4, vmap[0].vaddr, fb, - clip, false, drm_fb_xrgb8888_to_xrgb2101010_line); + drm_fb_xfrm(dst, dst_pitch, dst_pixsize, vmap, fb, clip, false, + drm_fb_xrgb8888_to_xrgb2101010_line); }static void drm_fb_xrgb8888_to_gray8_line(void *dbuf, const void *sbuf, unsigned int pixels)@@ -571,19 +537,12 @@ void drm_fb_xrgb8888_to_gray8(struct iosys_map *dst, const unsigned int *dst_pit const struct iosys_map *vmap, const struct drm_framebuffer *fb, const struct drm_rect *clip) { - static const unsigned int default_dst_pitch[DRM_FORMAT_MAX_PLANES] = { - 0, 0, 0, 0 + static const u8 dst_pixsize[DRM_FORMAT_MAX_PLANES] = { + 1, };- 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); + drm_fb_xfrm(dst, dst_pitch, dst_pixsize, vmap, fb, clip, false, + drm_fb_xrgb8888_to_gray8_line); } EXPORT_SYMBOL(drm_fb_xrgb8888_to_gray8);--2.37.1
-- Thomas Zimmermann Graphics Driver Developer SUSE Software Solutions Germany GmbH Maxfeldstr. 5, 90409 Nürnberg, Germany (HRB 36809, AG Nürnberg) Geschäftsführer: Ivo Totev
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