From b98971271bf4c4566db2133ad0a36e4f24819fbe Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Wed, 27 Aug 2014 16:51:22 +0300 Subject: [PATCH] drm/i915: s, fb->bits_per_pixel/8, pixel_size, in primary plane code MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Use the pixel_size we got from drm_format_plane_cpp() instead of fb->bits_per_pixel/8 when computing the primary plane page/linear offsets. Avoids a few divs and makes the code more future proof against funky pixel formats where bits_per_pixel isn't well defined. This is what we already did in the sprite code. Note that the relevant sprite patch was commit ca320ac456099c29290568353d924157e626ede9 Author: Chris Wilson Date: Wed Dec 19 12:14:22 2012 +0000 drm/i915: Use pixel size for computing linear offsets into a sprite This change was required on sprites because they support yuv formats which have fb->bits_per_pixel undefined. Signed-off-by: Ville Syrjälä Reviewed-by: Chris Wilson [danvet: Add Chris' software archeology as a note to the commit message.] Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_display.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index c95d423e10bb..127eb0ae8511 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2466,12 +2466,12 @@ static void i9xx_update_primary_plane(struct drm_crtc *crtc, if (IS_G4X(dev)) dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE; - linear_offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8); + linear_offset = y * fb->pitches[0] + x * pixel_size; if (INTEL_INFO(dev)->gen >= 4) { intel_crtc->dspaddr_offset = intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode, - fb->bits_per_pixel / 8, + pixel_size, fb->pitches[0]); linear_offset -= intel_crtc->dspaddr_offset; } else { @@ -2574,10 +2574,10 @@ static void ironlake_update_primary_plane(struct drm_crtc *crtc, if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE; - linear_offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8); + linear_offset = y * fb->pitches[0] + x * pixel_size; intel_crtc->dspaddr_offset = intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode, - fb->bits_per_pixel / 8, + pixel_size, fb->pitches[0]); linear_offset -= intel_crtc->dspaddr_offset; if (to_intel_plane(crtc->primary)->rotation == BIT(DRM_ROTATE_180)) { -- 2.45.2