[Intel-gfx] [PATCH 5/6] drm/i915: Add 180 degree primary plane rotation support
sonika.jindal at intel.com
sonika.jindal at intel.com
Wed Aug 6 06:25:26 CEST 2014
From: Sonika Jindal <sonika.jindal at intel.com>
Primary planes support 180 degree rotation. Expose the feature
through rotation drm property.
v2: Calculating linear/tiled offsets based on pipe source width and
height. Added 180 degree rotation support in ironlake_update_plane.
v3: Checking if CRTC is active before issueing update_plane. Added
wait for vblank to make sure we dont overtake page flips. Disabling
FBC since it does not work with rotated planes.
v4: Updated rotation checks for pending flips, fbc disable. Creating
rotation property only for Gen4 onwards. Property resetting as part
of lastclose.
v5: Resetting property in i915_driver_lastclose properly for planes
and crtcs. Fixed linear offset calculation that was off by 1 w.r.t
width in i9xx_update_plane and ironlake_update_plane. Removed tab
based indentation and unnecessary braces in intel_crtc_set_property
and intel_update_fbc. FBC and flip related checks should be done only
for valid crtcs.
v6: Minor nits in FBC disable checks for comments in intel_crtc_set_property
and positioning the disable code in intel_update_fbc.
v7: In case rotation property on inactive crtc is updated, we return
successfully printing debug log as crtc is inactive and only property change
is preserved.
v8: update_plane is changed to update_primary_plane, crtc->fb is changed to
crtc->primary->fb and return value of update_primary_plane is ignored.
v9: added rotation property to primary plane instead of crtc. Removing reset
of rotation property from lastclose. rotation_property is moved to
drm_mode_config, so drm layer will take care of resetting. Adding updation of
fbc when rotation is set to 0. Allowing rotation only if value is
different than old one.
Testcase: igt/kms_rotation_crc
Signed-off-by: Uma Shankar <uma.shankar at intel.com>
Signed-off-by: Sagar Kamble <sagar.a.kamble at intel.com>
Signed-off-by: Sonika Jindal <sonika.jindal at intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_display.c | 109 ++++++++++++++++++++++++++++++++--
drivers/gpu/drm/i915/intel_pm.c | 6 ++
3 files changed, 112 insertions(+), 4 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 1ece0c3..b4527ab 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4134,6 +4134,7 @@ enum punit_power_well {
#define DISPPLANE_NO_LINE_DOUBLE 0
#define DISPPLANE_STEREO_POLARITY_FIRST 0
#define DISPPLANE_STEREO_POLARITY_SECOND (1<<18)
+#define DISPPLANE_ROTATE_180 (1<<15)
#define DISPPLANE_TRICKLE_FEED_DISABLE (1<<14) /* Ironlake */
#define DISPPLANE_TILED (1<<10)
#define _DSPAADDR 0x70184
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 883af0b..8e0d3b5 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2389,11 +2389,15 @@ static void i9xx_update_primary_plane(struct drm_crtc *crtc,
unsigned long linear_offset;
u32 dspcntr;
u32 reg;
+ int pixel_size;
+
+ pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
reg = DSPCNTR(plane);
dspcntr = I915_READ(reg);
/* Mask out pixel format bits in case we change it */
dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
+ dspcntr &= ~DISPPLANE_ROTATE_180;
switch (fb->pixel_format) {
case DRM_FORMAT_C8:
dspcntr |= DISPPLANE_8BPP;
@@ -2435,8 +2439,6 @@ static void i9xx_update_primary_plane(struct drm_crtc *crtc,
if (IS_G4X(dev))
dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
- I915_WRITE(reg, dspcntr);
-
linear_offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
if (INTEL_INFO(dev)->gen >= 4) {
@@ -2448,6 +2450,20 @@ static void i9xx_update_primary_plane(struct drm_crtc *crtc,
} else {
intel_crtc->dspaddr_offset = linear_offset;
}
+ if (to_intel_plane(crtc->primary)->rotation == BIT(DRM_ROTATE_180)) {
+ dspcntr |= DISPPLANE_ROTATE_180;
+
+ x += (intel_crtc->config.pipe_src_w - 1);
+ y += (intel_crtc->config.pipe_src_h - 1);
+
+ /* Finding the last pixel of the last line of the display data and
+ * adding to linear_offset*/
+ linear_offset += (intel_crtc->config.pipe_src_h - 1) *
+ fb->pitches[0] +
+ (intel_crtc->config.pipe_src_w - 1) * pixel_size;
+ }
+
+ I915_WRITE(reg, dspcntr);
DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
i915_gem_obj_ggtt_offset(obj), linear_offset, x, y,
@@ -2475,11 +2491,14 @@ static void ironlake_update_primary_plane(struct drm_crtc *crtc,
unsigned long linear_offset;
u32 dspcntr;
u32 reg;
+ int pixel_size;
+ pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
reg = DSPCNTR(plane);
dspcntr = I915_READ(reg);
/* Mask out pixel format bits in case we change it */
dspcntr &= ~DISPPLANE_PIXFORMAT_MASK;
+ dspcntr &= ~DISPPLANE_ROTATE_180;
switch (fb->pixel_format) {
case DRM_FORMAT_C8:
dspcntr |= DISPPLANE_8BPP;
@@ -2517,14 +2536,26 @@ static void ironlake_update_primary_plane(struct drm_crtc *crtc,
else
dspcntr |= DISPPLANE_TRICKLE_FEED_DISABLE;
- I915_WRITE(reg, dspcntr);
-
linear_offset = y * fb->pitches[0] + x * (fb->bits_per_pixel / 8);
intel_crtc->dspaddr_offset =
intel_gen4_compute_page_offset(&x, &y, obj->tiling_mode,
fb->bits_per_pixel / 8,
fb->pitches[0]);
linear_offset -= intel_crtc->dspaddr_offset;
+ if (to_intel_plane(crtc->primary)->rotation == BIT(DRM_ROTATE_180)) {
+ dspcntr |= DISPPLANE_ROTATE_180;
+
+ if (!IS_HASWELL(dev) && !IS_BROADWELL(dev)) {
+ x += (intel_crtc->config.pipe_src_w - 1);
+ y += (intel_crtc->config.pipe_src_h - 1);
+ linear_offset +=
+ (intel_crtc->config.pipe_src_h - 1) *
+ fb->pitches[0] + (intel_crtc->config.pipe_src_w - 1) *
+ pixel_size;
+ }
+ }
+
+ I915_WRITE(reg, dspcntr);
DRM_DEBUG_KMS("Writing base %08lX %08lX %d %d %d\n",
i915_gem_obj_ggtt_offset(obj), linear_offset, x, y,
@@ -11664,11 +11695,67 @@ static void intel_plane_destroy(struct drm_plane *plane)
drm_plane_cleanup(plane);
kfree(intel_plane);
}
+static int intel_primary_plane_set_property(struct drm_plane *plane,
+ struct drm_property *prop,
+ uint64_t val)
+{
+ struct drm_device *dev = plane->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_plane *intel_plane = to_intel_plane(plane);
+ struct drm_crtc *crtc = plane->crtc;
+ struct intel_crtc *intel_crtc;
+ uint64_t old_val;
+
+ if (prop == dev->mode_config.rotation_property) {
+ /* exactly one rotation angle please */
+ if (hweight32(val & 0xf) != 1)
+ return -EINVAL;
+
+ old_val = intel_plane->rotation;
+ intel_plane->rotation = val;
+
+ if (old_val == intel_plane->rotation)
+ return 0;
+
+ if (crtc == NULL)
+ return -EINVAL;
+
+ intel_crtc = to_intel_crtc(plane->crtc);
+
+ if (intel_crtc && intel_crtc->active &&
+ intel_crtc->primary_enabled) {
+ intel_crtc_wait_for_pending_flips(crtc);
+
+ /* FBC does not work on some platforms for rotated planes, so
+ * disable it when rotation is not 0 and update it when rotation is
+ * set back to 0 */
+ if (INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev)) {
+ if (dev_priv->fbc.plane == intel_crtc->plane &&
+ intel_plane->rotation != BIT(DRM_ROTATE_0))
+ intel_disable_fbc(dev);
+ else if (intel_plane->rotation == BIT(DRM_ROTATE_0)) {
+ mutex_lock(&dev->struct_mutex);
+ intel_update_fbc(dev);
+ mutex_unlock(&dev->struct_mutex);
+ }
+ }
+
+ dev_priv->display.update_primary_plane(crtc,
+ crtc->primary->fb, 0, 0);
+
+ } else {
+ DRM_DEBUG_KMS("[CRTC:%d] inactive. Only rotation"
+ "property is updated\n", crtc->base.id);
+ }
+ }
+ return 0;
+}
static const struct drm_plane_funcs intel_primary_plane_funcs = {
.update_plane = intel_primary_plane_setplane,
.disable_plane = intel_primary_plane_disable,
.destroy = intel_plane_destroy,
+ .set_property = intel_primary_plane_set_property
};
static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
@@ -11686,6 +11773,7 @@ static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
primary->max_downscale = 1;
primary->pipe = pipe;
primary->plane = pipe;
+ primary->rotation = BIT(DRM_ROTATE_0);
if (HAS_FBC(dev) && INTEL_INFO(dev)->gen < 4)
primary->plane = !pipe;
@@ -11701,6 +11789,19 @@ static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
&intel_primary_plane_funcs,
intel_primary_formats, num_formats,
DRM_PLANE_TYPE_PRIMARY);
+
+ if (INTEL_INFO(dev)->gen >= 4) {
+ if (!dev->mode_config.rotation_property)
+ dev->mode_config.rotation_property =
+ drm_mode_create_rotation_property(dev,
+ BIT(DRM_ROTATE_0) |
+ BIT(DRM_ROTATE_180));
+ if (dev->mode_config.rotation_property)
+ drm_object_attach_property(&primary->base.base,
+ dev->mode_config.rotation_property,
+ primary->rotation);
+ }
+
return &primary->base;
}
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 684dc5f..d789e5f 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -581,6 +581,12 @@ void intel_update_fbc(struct drm_device *dev)
DRM_DEBUG_KMS("framebuffer not tiled or fenced, disabling compression\n");
goto out_disable;
}
+ if (INTEL_INFO(dev)->gen <= 4 && !IS_G4X(dev) &&
+ to_intel_plane(crtc->primary)->rotation != BIT(DRM_ROTATE_0)) {
+ if (set_no_fbc_reason(dev_priv, FBC_UNSUPPORTED_MODE))
+ DRM_DEBUG_KMS("Rotation unsupported, disabling\n");
+ goto out_disable;
+ }
/* If the kernel debugger is active, always disable compression */
if (in_dbg_master())
--
1.7.10.4
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