mirror of https://gitee.com/openkylin/linux.git
drm/sun4i: backend: Use drm_fb_cma_get_gem_addr() to get display memory
Commit 4636ce93d5
("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>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171014040252.9621-4-wens@csie.org
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@ -209,22 +209,11 @@ int sun4i_backend_update_layer_buffer(struct sun4i_backend *backend,
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{
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{
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struct drm_plane_state *state = plane->state;
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struct drm_plane_state *state = plane->state;
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struct drm_framebuffer *fb = state->fb;
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struct drm_framebuffer *fb = state->fb;
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struct drm_gem_cma_object *gem;
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u32 lo_paddr, hi_paddr;
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u32 lo_paddr, hi_paddr;
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dma_addr_t paddr;
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dma_addr_t paddr;
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int bpp;
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/* Get the physical address of the buffer in memory */
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gem = drm_fb_cma_get_gem_obj(fb, 0);
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DRM_DEBUG_DRIVER("Using GEM @ %pad\n", &gem->paddr);
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/* Compute the start of the displayed memory */
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bpp = fb->format->cpp[0];
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paddr = gem->paddr + fb->offsets[0];
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paddr += (state->src_x >> 16) * bpp;
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paddr += (state->src_y >> 16) * fb->pitches[0];
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/* Get the start of the displayed memory */
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paddr = drm_fb_cma_get_gem_addr(fb, state, 0);
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DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr);
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DRM_DEBUG_DRIVER("Setting buffer address to %pad\n", &paddr);
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/* Write the 32 lower bits of the address (in bits) */
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/* Write the 32 lower bits of the address (in bits) */
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