From: Thomas Zimmermann <tzimmermann@suse.de>
To: daniel@ffwll.ch, airlied@linux.ie,
maarten.lankhorst@linux.intel.com, mripard@kernel.org,
kraxel@redhat.com, corbet@lwn.net, lgirdwood@gmail.com,
broonie@kernel.org, sam@ravnborg.org, robh@kernel.org,
emil.l.velikov@gmail.com, geert+renesas@glider.be,
hdegoede@redhat.com, bluescreen_avenger@verizon.net,
gregkh@linuxfoundation.org
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>,
virtualization@lists.linux-foundation.org,
Thomas Zimmermann <tzimmermann@suse.de>,
dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org
Subject: [PATCH v3 1/9] drm/format-helper: Pass destination pitch to drm_fb_memcpy_dstclip()
Date: Thu, 15 Apr 2021 10:53:18 +0200 [thread overview]
Message-ID: <20210415085326.8824-2-tzimmermann@suse.de> (raw)
In-Reply-To: <20210415085326.8824-1-tzimmermann@suse.de>
The memcpy's destination buffer might have a different pitch than the
source. Support different pitches as function argument.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Tested-by: nerdopolis <bluescreen_avenger@verizon.net>
---
drivers/gpu/drm/drm_format_helper.c | 9 +++++----
drivers/gpu/drm/mgag200/mgag200_mode.c | 2 +-
drivers/gpu/drm/tiny/cirrus.c | 2 +-
include/drm/drm_format_helper.h | 2 +-
4 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/drm_format_helper.c b/drivers/gpu/drm/drm_format_helper.c
index c043ca364c86..8d5a683afea7 100644
--- a/drivers/gpu/drm/drm_format_helper.c
+++ b/drivers/gpu/drm/drm_format_helper.c
@@ -52,6 +52,7 @@ EXPORT_SYMBOL(drm_fb_memcpy);
/**
* drm_fb_memcpy_dstclip - Copy clip buffer
* @dst: Destination buffer (iomem)
+ * @dst_pitch: Number of bytes between two consecutive scanlines within dst
* @vaddr: Source buffer
* @fb: DRM framebuffer
* @clip: Clip rectangle area to copy
@@ -59,12 +60,12 @@ EXPORT_SYMBOL(drm_fb_memcpy);
* This function applies clipping on dst, i.e. the destination is a
* full (iomem) framebuffer but only the clip rect content is copied over.
*/
-void drm_fb_memcpy_dstclip(void __iomem *dst, void *vaddr,
- struct drm_framebuffer *fb,
+void drm_fb_memcpy_dstclip(void __iomem *dst, unsigned int dst_pitch,
+ void *vaddr, struct drm_framebuffer *fb,
struct drm_rect *clip)
{
unsigned int cpp = fb->format->cpp[0];
- unsigned int offset = clip_offset(clip, fb->pitches[0], cpp);
+ unsigned int offset = clip_offset(clip, dst_pitch, cpp);
size_t len = (clip->x2 - clip->x1) * cpp;
unsigned int y, lines = clip->y2 - clip->y1;
@@ -73,7 +74,7 @@ void drm_fb_memcpy_dstclip(void __iomem *dst, void *vaddr,
for (y = 0; y < lines; y++) {
memcpy_toio(dst, vaddr, len);
vaddr += fb->pitches[0];
- dst += fb->pitches[0];
+ dst += dst_pitch;
}
}
EXPORT_SYMBOL(drm_fb_memcpy_dstclip);
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index cece3e57fb27..9d576240faed 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -1554,7 +1554,7 @@ mgag200_handle_damage(struct mga_device *mdev, struct drm_framebuffer *fb,
{
void *vmap = map->vaddr; /* TODO: Use mapping abstraction properly */
- drm_fb_memcpy_dstclip(mdev->vram, vmap, fb, clip);
+ drm_fb_memcpy_dstclip(mdev->vram, fb->pitches[0], vmap, fb, clip);
/* Always scanout image at VRAM offset 0 */
mgag200_set_startadd(mdev, (u32)0);
diff --git a/drivers/gpu/drm/tiny/cirrus.c b/drivers/gpu/drm/tiny/cirrus.c
index e3afb45d9a5c..42611dacde88 100644
--- a/drivers/gpu/drm/tiny/cirrus.c
+++ b/drivers/gpu/drm/tiny/cirrus.c
@@ -324,7 +324,7 @@ static int cirrus_fb_blit_rect(struct drm_framebuffer *fb, const struct dma_buf_
return -ENODEV;
if (cirrus->cpp == fb->format->cpp[0])
- drm_fb_memcpy_dstclip(cirrus->vram,
+ drm_fb_memcpy_dstclip(cirrus->vram, fb->pitches[0],
vmap, fb, rect);
else if (fb->format->cpp[0] == 4 && cirrus->cpp == 2)
diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h
index 5f9e37032468..2b5036a5fbe7 100644
--- a/include/drm/drm_format_helper.h
+++ b/include/drm/drm_format_helper.h
@@ -11,7 +11,7 @@ struct drm_rect;
void drm_fb_memcpy(void *dst, void *vaddr, struct drm_framebuffer *fb,
struct drm_rect *clip);
-void drm_fb_memcpy_dstclip(void __iomem *dst, void *vaddr,
+void drm_fb_memcpy_dstclip(void __iomem *dst, unsigned int dst_pitch, void *vaddr,
struct drm_framebuffer *fb,
struct drm_rect *clip);
void drm_fb_swab(void *dst, void *src, struct drm_framebuffer *fb,
--
2.31.1
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next prev parent reply other threads:[~2021-04-15 8:53 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-15 8:53 [PATCH v3 0/9] drm: Support simple-framebuffer devices and firmware fbs Thomas Zimmermann
2021-04-15 8:53 ` Thomas Zimmermann [this message]
2021-04-15 8:53 ` [PATCH v3 2/9] drm/format-helper: Add blitter functions Thomas Zimmermann
2021-04-15 8:53 ` [PATCH v3 3/9] drm/aperture: Add infrastructure for aperture ownership Thomas Zimmermann
2021-04-15 8:53 ` [PATCH v3 4/9] drm: Add simpledrm driver Thomas Zimmermann
2021-04-15 8:53 ` [PATCH v3 5/9] drm/simpledrm: Add fbdev emulation Thomas Zimmermann
2021-04-15 8:53 ` [PATCH v3 6/9] drm/simpledrm: Initialize framebuffer data from device-tree node Thomas Zimmermann
2021-04-15 8:53 ` [PATCH v3 7/9] drm/simpledrm: Acquire clocks from DT device node Thomas Zimmermann
2021-04-15 8:53 ` [PATCH v3 8/9] drm/simpledrm: Acquire regulators " Thomas Zimmermann
2021-04-15 8:53 ` [PATCH v3 9/9] drm/simpledrm: Acquire memory aperture for framebuffer Thomas Zimmermann
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