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Commit cff2192f authored by Chen-Yu Tsai's avatar Chen-Yu Tsai Committed by Maxime Ripard
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drm/sun4i: backend: Use drm_fb_cma_get_gem_addr() to get display memory 



Commit 4636ce93 ("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: default avatarChen-Yu Tsai <wens@csie.org>
Signed-off-by: default avatarMaxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171014040252.9621-4-wens@csie.org
parent 8270249f

drivers/gpu/drm/sun4i/sun4i_backend.c

+2 −13
Original line number Diff line number Diff line
@@ -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) */