[Intel-gfx] [PATCH 2/4] drm/i915: Enabling constant alpha drm property
sagar.a.kamble at intel.com
sagar.a.kamble at intel.com
Sat Mar 8 09:21:17 CET 2014
From: Sagar Kamble <sagar.a.kamble at intel.com>
This patch enables constant alpha property for Sprite planes.
Client has to set BIT(DRM_BLEND_CONSTANT_ALPHA) | (8 bit alpha value)
for applying constant alpha on a plane. To disable constant alpha,
client has to set BIT(DRM_BLEND_NONE)
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Cc: Jani Nikula <jani.nikula at linux.intel.com>
Cc: David Airlie <airlied at linux.ie>
Signed-off-by: Sagar Kamble <sagar.a.kamble at intel.com>
---
drivers/gpu/drm/i915/i915_dma.c | 11 ++++++-
drivers/gpu/drm/i915/i915_drv.h | 1 +
drivers/gpu/drm/i915/i915_reg.h | 2 ++
drivers/gpu/drm/i915/intel_drv.h | 7 +++++
drivers/gpu/drm/i915/intel_sprite.c | 61 ++++++++++++++++++++++++++++++++++++-
5 files changed, 80 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_dma.c b/drivers/gpu/drm/i915/i915_dma.c
index e4d2b9f..286251d 100644
--- a/drivers/gpu/drm/i915/i915_dma.c
+++ b/drivers/gpu/drm/i915/i915_dma.c
@@ -1897,13 +1897,22 @@ int i915_driver_open(struct drm_device *dev, struct drm_file *file)
void i915_driver_lastclose(struct drm_device * dev)
{
drm_i915_private_t *dev_priv = dev->dev_private;
-
+ struct intel_plane *plane;
/* On gen6+ we refuse to init without kms enabled, but then the drm core
* goes right around and calls lastclose. Check for this and don't clean
* up anything. */
if (!dev_priv)
return;
+ if (dev_priv->blend_property) {
+ list_for_each_entry(plane, &dev->mode_config.plane_list, base.head) {
+ plane->blend_param.value = BIT(DRM_BLEND_NONE);
+ drm_object_property_set_value(&plane->base.base,
+ dev_priv->blend_property,
+ plane->blend_param.value);
+ }
+ }
+
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
intel_fbdev_restore_mode(dev);
vga_switcheroo_process_delayed_switch();
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 2a319ba..8a82fb7 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1604,6 +1604,7 @@ typedef struct drm_i915_private {
struct drm_property *broadcast_rgb_property;
struct drm_property *force_audio_property;
+ struct drm_property *blend_property;
uint32_t hw_context_size;
struct list_head context_list;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 146609a..292d55d 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3772,6 +3772,8 @@ enum punit_power_well {
#define SPRITE_INT_GAMMA_ENABLE (1<<13)
#define SPRITE_TILED (1<<10)
#define SPRITE_DEST_KEY (1<<2)
+#define SPRITE_CONSTANT_ALPHA_ENABLE (1<<31)
+#define SPRITE_CONSTANT_ALPHA_MASK (0xFF)
#define _SPRA_LINOFF 0x70284
#define _SPRA_STRIDE 0x70288
#define _SPRA_POS 0x7028c
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 4a4c6dd..e33124c 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -405,6 +405,13 @@ struct intel_plane {
unsigned int crtc_w, crtc_h;
uint32_t src_x, src_y;
uint32_t src_w, src_h;
+ union {
+ uint64_t value;
+ struct {
+ unsigned int type;
+ unsigned int factor;
+ } details;
+ } blend_param;
/* Since we need to change the watermarks before/after
* enabling/disabling the planes, we need to store the parameters here
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index 9436f18..4c3d2a2 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -51,11 +51,15 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
int pipe = intel_plane->pipe;
int plane = intel_plane->plane;
u32 sprctl;
+ u32 sprconstalpha;
+ unsigned int blend_type, blend_factor;
unsigned long sprsurf_offset, linear_offset;
int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
sprctl = I915_READ(SPCNTR(pipe, plane));
+ sprconstalpha = SPCONSTALPHA(pipe, plane);
+
/* Mask out pixel format bits in case we change it */
sprctl &= ~SP_PIXFORMAT_MASK;
sprctl &= ~SP_YUV_BYTE_ORDER_MASK;
@@ -104,6 +108,23 @@ vlv_update_plane(struct drm_plane *dplane, struct drm_crtc *crtc,
break;
}
+ /* Handle plane alpha and color blending properties */
+ blend_type = intel_plane->blend_param.details.type;
+ blend_factor = intel_plane->blend_param.details.factor;
+
+ switch (blend_type) {
+ case DRM_BLEND_NONE:
+ I915_WRITE(sprconstalpha, ~SPRITE_CONSTANT_ALPHA_ENABLE);
+ break;
+ case DRM_BLEND_CONSTANT_ALPHA:
+ I915_WRITE(sprconstalpha, (blend_factor & SPRITE_CONSTANT_ALPHA_MASK) |
+ SPRITE_CONSTANT_ALPHA_ENABLE);
+ break;
+ default:
+ DRM_DEBUG_DRIVER("%x Blending operation not supported", intel_plane->blend_param.details.type);
+ break;
+ }
+
/*
* Enable gamma to match primary/cursor plane behaviour.
* FIXME should be user controllable via propertiesa.
@@ -1011,6 +1032,26 @@ out_unlock:
return ret;
}
+static int intel_plane_set_property(struct drm_plane *plane,
+ struct drm_property *prop,
+ uint64_t val)
+{
+ struct drm_i915_private *dev_priv = plane->dev->dev_private;
+ struct intel_plane *intel_plane = to_intel_plane(plane);
+ uint64_t old_val;
+ int ret = -ENOENT;
+
+ if (prop == dev_priv->blend_property) {
+ old_val = intel_plane->blend_param.value;
+ intel_plane->blend_param.value = val;
+ ret = intel_plane_restore(plane);
+ if (ret)
+ intel_plane->blend_param.value = old_val;
+ }
+
+ return ret;
+}
+
int intel_plane_restore(struct drm_plane *plane)
{
struct intel_plane *intel_plane = to_intel_plane(plane);
@@ -1037,6 +1078,7 @@ static const struct drm_plane_funcs intel_plane_funcs = {
.update_plane = intel_update_plane,
.disable_plane = intel_disable_plane,
.destroy = intel_destroy_plane,
+ .set_property = intel_plane_set_property,
};
static uint32_t ilk_plane_formats[] = {
@@ -1073,6 +1115,7 @@ static uint32_t vlv_plane_formats[] = {
int
intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_plane *intel_plane;
unsigned long possible_crtcs;
const uint32_t *plane_formats;
@@ -1141,13 +1184,29 @@ intel_plane_init(struct drm_device *dev, enum pipe pipe, int plane)
intel_plane->pipe = pipe;
intel_plane->plane = plane;
+ /* Initialize drm properties for plane */
+ intel_plane->blend_param.details.type = BIT(DRM_BLEND_NONE);
+ intel_plane->blend_param.details.factor = 0;
+
possible_crtcs = (1 << pipe);
ret = drm_plane_init(dev, &intel_plane->base, possible_crtcs,
&intel_plane_funcs,
plane_formats, num_plane_formats,
false);
- if (ret)
+ if (ret) {
kfree(intel_plane);
+ goto out;
+ }
+
+ if (!dev_priv->blend_property)
+ dev_priv->blend_property = drm_mode_create_blend_property(dev,
+ BIT(DRM_BLEND_NONE) |
+ BIT(DRM_BLEND_CONSTANT_ALPHA));
+ if (dev_priv->blend_property)
+ drm_object_attach_property(&intel_plane->base.base,
+ dev_priv->blend_property,
+ intel_plane->blend_param.value);
+out:
return ret;
}
--
1.8.5
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