This should allow BIOS fb inheritance to work on ILK+ machines too.
Signed-off-by: Jesse Barnes <jbar...@virtuousgeek.org>
---
drivers/gpu/drm/i915/intel_display.c | 92 ++++++++++++++++++++++++++++++++++
1 file changed, 92 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index 2eb1108..f93ea6e 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6571,6 +6571,96 @@ static void ironlake_get_pfit_config(struct intel_crtc
*crtc,
}
}
+static void ironlake_get_plane_config(struct intel_crtc *crtc,
+ struct intel_plane_config *plane_config)
+{
+ struct drm_device *dev = crtc->base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_i915_gem_object *obj = NULL;
+ struct drm_mode_fb_cmd2 mode_cmd = { 0 };
+ u32 val, base, offset;
+ int pipe = crtc->pipe, plane = crtc->plane;
+ int fourcc, pixel_format;
+ int aligned_height;
+
+ plane_config->fb = kzalloc(sizeof(*plane_config->fb), GFP_KERNEL);
+ if (!plane_config->fb) {
+ DRM_DEBUG_KMS("failed to alloc fb\n");
+ return;
+ }
+
+ val = I915_READ(DSPCNTR(plane));
+
+ if (INTEL_INFO(dev)->gen >= 4)
+ if (val & DISPPLANE_TILED)
+ plane_config->tiled = true;
+
+ pixel_format = val & DISPPLANE_PIXFORMAT_MASK;
+ fourcc = intel_format_to_fourcc(pixel_format);
+ plane_config->fb->base.pixel_format = fourcc;
+ plane_config->fb->base.bits_per_pixel =
+ drm_format_plane_cpp(fourcc, 0) * 8;
+
+ base = I915_READ(DSPSURF(plane)) & 0xfffff000;
+ if (IS_HASWELL(dev) || IS_BROADWELL(dev)) {
+ offset = I915_READ(DSPOFFSET(plane));
+ } else {
+ if (plane_config->tiled)
+ offset = I915_READ(DSPTILEOFF(plane));
+ else
+ offset = I915_READ(DSPLINOFF(plane));
+ }
+
+ val = I915_READ(PIPESRC(pipe));
+ plane_config->fb->base.width = ((val >> 16) & 0xfff) + 1;
+ plane_config->fb->base.height = ((val >> 0) & 0xfff) + 1;
+
+ val = I915_READ(DSPSTRIDE(pipe));
+ plane_config->fb->base.pitches[0] = val & 0xffffff80;
+
+ aligned_height = intel_align_height(dev, plane_config->fb->base.height,
+ plane_config->tiled);
+
+ plane_config->size = ALIGN(plane_config->fb->base.pitches[0] *
+ aligned_height, PAGE_SIZE);
+
+ DRM_DEBUG_KMS("pipe/plane %d/%d with fb: size=%dx%d@%d, offset=%x,
pitch %d, size 0x%x\n",
+ pipe, plane, plane_config->fb->base.width,
+ plane_config->fb->base.height,
+ plane_config->fb->base.bits_per_pixel, base,
+ plane_config->fb->base.pitches[0],
+ plane_config->size);
+
+ /*
+ * If the fb is shared between multiple heads, we'll just get the
+ * first one.
+ */
+ obj = i915_gem_object_create_stolen_for_preallocated(dev, base, base,
+
plane_config->size);
+ if (!obj)
+ return;
+
+ mode_cmd.pixel_format = fourcc;
+ mode_cmd.width = plane_config->fb->base.width;
+ mode_cmd.height = plane_config->fb->base.height;
+ mode_cmd.pitches[0] = plane_config->fb->base.pitches[0];
+
+ mutex_lock(&dev->struct_mutex);
+
+ if (intel_framebuffer_init(dev, plane_config->fb, &mode_cmd, obj)) {
+ DRM_DEBUG_KMS("intel fb init failed\n");
+ goto out_unref_obj;
+ }
+
+ mutex_unlock(&dev->struct_mutex);
+ DRM_DEBUG_KMS("plane fb obj %p\n", plane_config->fb->obj);
+ return;
+
+out_unref_obj:
+ drm_gem_object_unreference(&obj->base);
+ mutex_unlock(&dev->struct_mutex);
+}
+
static bool ironlake_get_pipe_config(struct intel_crtc *crtc,
struct intel_crtc_config *pipe_config)
{
@@ -10833,6 +10923,7 @@ static void intel_init_display(struct drm_device *dev)
if (HAS_DDI(dev)) {
dev_priv->display.get_pipe_config = haswell_get_pipe_config;
+ dev_priv->display.get_plane_config = ironlake_get_plane_config;
dev_priv->display.crtc_mode_set = haswell_crtc_mode_set;
dev_priv->display.crtc_enable = haswell_crtc_enable;
dev_priv->display.crtc_disable = haswell_crtc_disable;
@@ -10840,6 +10931,7 @@ static void intel_init_display(struct drm_device *dev)
dev_priv->display.update_plane = ironlake_update_plane;
} else if (HAS_PCH_SPLIT(dev)) {
dev_priv->display.get_pipe_config = ironlake_get_pipe_config;
+ dev_priv->display.get_plane_config = ironlake_get_plane_config;
dev_priv->display.crtc_mode_set = ironlake_crtc_mode_set;
dev_priv->display.crtc_enable = ironlake_crtc_enable;
dev_priv->display.crtc_disable = ironlake_crtc_disable;
--
1.7.9.5
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