mirror of https://gitee.com/openkylin/linux.git
drm/ast: Add plane atomic_check() functions
Introducing atomic_check() for priamry and cursor plane. The functions validate the plane state and will later set format information for the CRTC's atomic_flush(). Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Acked-by: Gerd Hoffmann <kraxel@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20191202111557.15176-5-tzimmermann@suse.de
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@ -31,6 +31,7 @@
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#include <linux/export.h>
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#include <linux/pci.h>
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#include <drm/drm_atomic.h>
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#include <drm/drm_atomic_helper.h>
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#include <drm/drm_atomic_state_helper.h>
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#include <drm/drm_crtc.h>
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@ -530,9 +531,24 @@ static const uint32_t ast_primary_plane_formats[] = {
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DRM_FORMAT_C8,
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};
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int ast_primary_plane_helper_atomic_check(struct drm_plane *plane,
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struct drm_plane_state *state)
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static int ast_primary_plane_helper_atomic_check(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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struct drm_crtc_state *crtc_state;
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int ret;
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if (!state->crtc)
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return 0;
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crtc_state = drm_atomic_get_new_crtc_state(state->state, state->crtc);
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ret = drm_atomic_helper_check_plane_state(state, crtc_state,
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DRM_PLANE_HELPER_NO_SCALING,
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DRM_PLANE_HELPER_NO_SCALING,
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false, true);
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if (ret)
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return ret;
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return 0;
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}
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@ -603,8 +619,9 @@ ast_cursor_plane_helper_prepare_fb(struct drm_plane *plane,
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if (!crtc || !fb)
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return 0;
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if (fb->width > AST_MAX_HWC_WIDTH || fb->height > AST_MAX_HWC_HEIGHT)
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return -EINVAL;
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if (WARN_ON_ONCE(fb->width > AST_MAX_HWC_WIDTH) ||
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WARN_ON_ONCE(fb->height > AST_MAX_HWC_HEIGHT))
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return -EINVAL; /* BUG: didn't test in atomic_check() */
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ast = crtc->dev->dev_private;
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@ -646,6 +663,28 @@ ast_cursor_plane_helper_prepare_fb(struct drm_plane *plane,
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static int ast_cursor_plane_helper_atomic_check(struct drm_plane *plane,
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struct drm_plane_state *state)
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{
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struct drm_framebuffer *fb = state->fb;
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struct drm_crtc_state *crtc_state;
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int ret;
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if (!state->crtc)
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return 0;
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crtc_state = drm_atomic_get_new_crtc_state(state->state, state->crtc);
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ret = drm_atomic_helper_check_plane_state(state, crtc_state,
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DRM_PLANE_HELPER_NO_SCALING,
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DRM_PLANE_HELPER_NO_SCALING,
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true, true);
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if (ret)
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return ret;
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if (!state->visible)
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return 0;
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if (fb->width > AST_MAX_HWC_WIDTH || fb->height > AST_MAX_HWC_HEIGHT)
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return -EINVAL;
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return 0;
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}
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