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drm/arm: hdlcd: Use CMA helper for plane buffer address calculation

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CMA has gained a recent helper function for calculating the start
of the plane buffer's physical address. Use that instead of the
hand rolled version.

Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
Liviu Dudau 2017-06-13 12:18:03 +01:00
parent de5cc8155c
commit 49a58f26af
1 changed files with 1 additions and 8 deletions
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9
drivers/gpu/drm/arm/hdlcd_crtc.c
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@ -261,21 +261,14 @@ static void hdlcd_plane_atomic_update(struct drm_plane *plane,
{
struct drm_framebuffer *fb = plane->state->fb;
struct hdlcd_drm_private *hdlcd;
struct drm_gem_cma_object *gem;
u32 src_x, src_y, dest_h;
dma_addr_t scanout_start;
if (!fb)
return;
src_x = plane->state->src.x1 >> 16;
src_y = plane->state->src.y1 >> 16;
dest_h = drm_rect_height(&plane->state->dst);
gem = drm_fb_cma_get_gem_obj(fb, 0);
scanout_start = gem->paddr + fb->offsets[0] +
src_y * fb->pitches[0] +
src_x * fb->format->cpp[0];
scanout_start = drm_fb_cma_get_gem_addr(fb, plane->state, 0);
hdlcd = plane->dev->dev_private;
hdlcd_write(hdlcd, HDLCD_REG_FB_LINE_LENGTH, fb->pitches[0]);