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drm/armada: improve efficiency of armada_drm_plane_calc_addrs()

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Lookup the drm_format_info structure once when computing all the
framebuffer plane addresses by using drm_format_info(), rather than
repetitive lookups via drm_format_plane_cpp().

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Russell King 2017-12-08 12:16:22 +00:00
parent 9c898c4954
commit d6a48965db
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/armada/armada_crtc.c
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@ -168,8 +168,9 @@ static void armada_drm_crtc_update(struct armada_crtc *dcrtc)
void armada_drm_plane_calc_addrs(u32 *addrs, struct drm_framebuffer *fb,
int x, int y)
{
const struct drm_format_info *format = fb->format;
unsigned int num_planes = format->num_planes;
u32 addr = drm_fb_obj(fb)->dev_addr;
int num_planes = fb->format->num_planes;
int i;
if (num_planes > 3)
@ -177,7 +178,7 @@ void armada_drm_plane_calc_addrs(u32 *addrs, struct drm_framebuffer *fb,
for (i = 0; i < num_planes; i++)
addrs[i] = addr + fb->offsets[i] + y * fb->pitches[i] +
x * fb->format->cpp[i];
x * format->cpp[i];
for (; i < 3; i++)
addrs[i] = 0;
}