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drm: pin new and unpin old buffer when setting a mode.

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This removes the requirement for user space to pin a buffer before
setting a mode that is backed by the pixels from that buffer.

Signed-off-by: Kristian Høgsberg <krh@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Dave Airlie <airlied@linux.ie>
This commit is contained in:
Kristian Høgsberg
2008-12-17 22:14:46 -05:00
committed by Dave Airlie
parent d1e22c6ed0
commit 3c4fdcfb29
3 changed files with 55 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/i915/intel_display.c
+36 -8
View File
@@ -344,7 +344,8 @@ intel_wait_for_vblank(struct drm_device *dev)
}
static void
intel_pipe_set_base(struct drm_crtc *crtc, int x, int y)
intel_pipe_set_base(struct drm_crtc *crtc, int x, int y,
struct drm_framebuffer *old_fb)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -359,7 +360,7 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y)
int dspsurf = (pipe == 0 ? DSPASURF : DSPBSURF);
int dspstride = (pipe == 0) ? DSPASTRIDE : DSPBSTRIDE;
int dspcntr_reg = (pipe == 0) ? DSPACNTR : DSPBCNTR;
u32 dspcntr;
u32 dspcntr, alignment;
/* no fb bound */
if (!crtc->fb) {
@@ -368,10 +369,32 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y)
}
intel_fb = to_intel_framebuffer(crtc->fb);
obj = intel_fb->obj;
obj_priv = obj->driver_private;
switch (obj_priv->tiling_mode) {
case I915_TILING_NONE:
alignment = 64 * 1024;
break;
case I915_TILING_X:
if (IS_I9XX(dev))
alignment = 1024 * 1024;
else
alignment = 512 * 1024;
break;
case I915_TILING_Y:
/* FIXME: Is this true? */
DRM_ERROR("Y tiled not allowed for scan out buffers\n");
return;
default:
BUG();
}
if (i915_gem_object_pin(intel_fb->obj, alignment))
return;
i915_gem_object_set_to_gtt_domain(intel_fb->obj, 1);
Start = obj_priv->gtt_offset;
Offset = y * crtc->fb->pitch + x * (crtc->fb->bits_per_pixel / 8);
@@ -409,6 +432,12 @@ intel_pipe_set_base(struct drm_crtc *crtc, int x, int y)
I915_READ(dspbase);
}
intel_wait_for_vblank(dev);
if (old_fb) {
intel_fb = to_intel_framebuffer(old_fb);
i915_gem_object_unpin(intel_fb->obj);
}
if (!dev->primary->master)
return;
@@ -680,7 +709,8 @@ static int intel_panel_fitter_pipe (struct drm_device *dev)
static void intel_crtc_mode_set(struct drm_crtc *crtc,
struct drm_display_mode *mode,
struct drm_display_mode *adjusted_mode,
int x, int y)
int x, int y,
struct drm_framebuffer *old_fb)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
@@ -915,9 +945,7 @@ static void intel_crtc_mode_set(struct drm_crtc *crtc,
I915_WRITE(dspcntr_reg, dspcntr);
/* Flush the plane changes */
intel_pipe_set_base(crtc, x, y);
intel_wait_for_vblank(dev);
intel_pipe_set_base(crtc, x, y, old_fb);
drm_vblank_post_modeset(dev, pipe);
}
@@ -1153,7 +1181,7 @@ struct drm_crtc *intel_get_load_detect_pipe(struct intel_output *intel_output,
if (!crtc->enabled) {
if (!mode)
mode = &load_detect_mode;
drm_crtc_helper_set_mode(crtc, mode, 0, 0);
drm_crtc_helper_set_mode(crtc, mode, 0, 0, crtc->fb);
} else {
if (intel_crtc->dpms_mode != DRM_MODE_DPMS_ON) {
crtc_funcs = crtc->helper_private;