From 6383cf7d7839bf52aa4efa20cc921773126797f4 Mon Sep 17 00:00:00 2001 From: Mario Kleiner Date: Tue, 5 Oct 2010 19:57:36 -0400 Subject: drm/radeon: Add function for display scanout position query. radeon_get_crtc_scanoutpos() returns the current horizontal and vertical scanout position of a crtc. It also reports if the display scanout is currently inside the vblank area. hpos reports current horizontal pixel scanout position. vpos reports the current scanned out line as a value >= 0 in active scanout. If the scanout is inside vblank area, it reports a negative value, the number of scanlines until end of vblank aka start of active scanout, e.g., -3 == "At most 3 scanlines until end of vblank". This code is derived from radeon_pm_in_vbl(), tested on R500 and R600. Signed-off-by: Mario Kleiner Signed-off-by: Alex Deucher Signed-off-by: Dave Airlie --- drivers/gpu/drm/radeon/radeon_mode.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'drivers/gpu/drm/radeon/radeon_mode.h') diff --git a/drivers/gpu/drm/radeon/radeon_mode.h b/drivers/gpu/drm/radeon/radeon_mode.h index d25cf093c84d..f4396d71b417 100644 --- a/drivers/gpu/drm/radeon/radeon_mode.h +++ b/drivers/gpu/drm/radeon/radeon_mode.h @@ -428,6 +428,11 @@ struct radeon_framebuffer { struct drm_gem_object *obj; }; +/* radeon_get_crtc_scanoutpos() return flags */ +#define RADEON_SCANOUTPOS_VALID (1 << 0) +#define RADEON_SCANOUTPOS_INVBL (1 << 1) +#define RADEON_SCANOUTPOS_ACCURATE (1 << 2) + extern enum radeon_tv_std radeon_combios_get_tv_info(struct radeon_device *rdev); extern enum radeon_tv_std @@ -531,6 +536,8 @@ extern int radeon_crtc_cursor_set(struct drm_crtc *crtc, extern int radeon_crtc_cursor_move(struct drm_crtc *crtc, int x, int y); +extern int radeon_get_crtc_scanoutpos(struct radeon_device *rdev, int crtc, int *vpos, int *hpos); + extern bool radeon_combios_check_hardcoded_edid(struct radeon_device *rdev); extern struct edid * radeon_combios_get_hardcoded_edid(struct radeon_device *rdev); -- cgit v1.2.3