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Subject[PATCH 3/7] drm/sun4i: backend: Use drm_fb_cma_get_gem_addr() to get display memory
Date
Commit 4636ce93d5b2 ("drm/fb-cma-helper: Add drm_fb_cma_get_gem_addr()")
adds a new helper, which covers fetching a drm_framebuffer's GEM object
and calculating the buffer address for a given plane.

This patch uses this helper to replace our own open coded version of the
same function.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
drivers/gpu/drm/sun4i/sun4i_backend.c | 15 ++-------------
1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c
index 1cc1780f5091..243ddfdc9403 100644
--- a/drivers/gpu/drm/sun4i/sun4i_backend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.c
@@ -209,22 +209,11 @@ int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
{
struct drm_plane_state *state = plane->state;
struct drm_framebuffer *fb = state->fb;
- struct drm_gem_cma_object *gem;
u32 lo_paddr, hi_paddr;
dma_addr_t paddr;
- int bpp;
-
- /* Get the physical address of the buffer in memory */
- gem = drm_fb_cma_get_gem_obj(fb, 0);
-
- DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);
-
- /* Compute the start of the displayed memory */
- bpp = fb->format->cpp[0];
- paddr = gem->paddr + fb->offsets[0];
- paddr += (state->src_x >> 16) * bpp;
- paddr += (state->src_y >> 16) * fb->pitches[0];

+ /* Get the start of the displayed memory */
+ paddr = drm_fb_cma_get_gem_addr(fb, state, 0);
DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr);

/* Write the 32 lower bits of the address (in bits) */
--
2.14.2
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