[PATCH v2 14/15] drm/i915: Call .update_primary_plane in intel_{enable, disable}_primary_hw_plane()

ville.syrjala
2014-06-06T19:46:10Z

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Make the intel_{enable,disable}_primary_hw_plane() simply call
.update_primary_plane(), thus eliminating the rmw from these functions
which should help the poor old 830M.

Now we can also remove the .update_primary_plane() from the
.crtc_enable() hooks because we end up calling it via
intel_crtc_enable_planes()->intel_enable_primary_hw_plane().

This also has the nice benefit of making primary planes a bit closer to
the way we handle sprite planes during modesets.

v2: Just write 0 to DSPCNTR and DSPSURF/DSPADDR if the plane is (to be)
disabled. Quicker, and more importantly avoids an oops when fb==NULL
due to BIOS fb takeover failure.
Pimp the commit message a bit (Matt)

Reviewed-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 107 ++++++++++++++---------------------
1 file changed, 42 insertions(+), 65 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index e14e71b..5d652da 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2147,63 +2147,51 @@ void intel_flush_primary_plane(struct drm_i915_private *dev_priv,

/**
* intel_enable_primary_hw_plane - enable the primary plane on a given pipe
- * @dev_priv: i915 private structure
- * @plane: plane to enable
- * @pipe: pipe being fed
+ * @plane: plane to be enabled
+ * @crtc: crtc for the plane
*
- * Enable @plane on @pipe, making sure that @pipe is running first.
+ * Enable @plane on @crtc, making sure that the pipe is running first.
*/
-static void intel_enable_primary_hw_plane(struct drm_i915_private *dev_priv,
- enum plane plane, enum pipe pipe)
+static void intel_enable_primary_hw_plane(struct drm_plane *plane,
+ struct drm_crtc *crtc)
{
- struct intel_crtc *intel_crtc =
- to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
- int reg;
- u32 val;
+ struct drm_i915_private *dev_priv = crtc->dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);

/* If the pipe isn't enabled, we can't pump pixels and may hang */
- assert_pipe_enabled(dev_priv, pipe);
+ assert_pipe_enabled(dev_priv, intel_crtc->pipe);

if (intel_crtc->primary_enabled)
return;

intel_crtc->primary_enabled = true;

- reg = DSPCNTR(plane);
- val = I915_READ(reg);
- WARN_ON(val & DISPLAY_PLANE_ENABLE);
-
- I915_WRITE(reg, val | DISPLAY_PLANE_ENABLE);
- intel_flush_primary_plane(dev_priv, plane);
+ dev_priv->display.update_primary_plane(crtc, plane->fb,
+ crtc->x, crtc->y);
}

/**
* intel_disable_primary_hw_plane - disable the primary hardware plane
- * @dev_priv: i915 private structure
- * @plane: plane to disable
- * @pipe: pipe consuming the data
+ * @plane: plane to be disabled
+ * @crtc: crtc for the plane
*
- * Disable @plane; should be an independent operation.
+ * Disable @plane on @crtc, making sure that the pipe is running first.
*/
-static void intel_disable_primary_hw_plane(struct drm_i915_private *dev_priv,
- enum plane plane, enum pipe pipe)
+static void intel_disable_primary_hw_plane(struct drm_plane *plane,
+ struct drm_crtc *crtc)
{
- struct intel_crtc *intel_crtc =
- to_intel_crtc(dev_priv->pipe_to_crtc_mapping[pipe]);
- int reg;
- u32 val;
+ struct drm_i915_private *dev_priv = crtc->dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+
+ assert_pipe_enabled(dev_priv, intel_crtc->pipe);

if (!intel_crtc->primary_enabled)
return;

intel_crtc->primary_enabled = false;

- reg = DSPCNTR(plane);
- val = I915_READ(reg);
- WARN_ON((val & DISPLAY_PLANE_ENABLE) == 0);
-
- I915_WRITE(reg, val & ~DISPLAY_PLANE_ENABLE);
- intel_flush_primary_plane(dev_priv, plane);
+ dev_priv->display.update_primary_plane(crtc, plane->fb,
+ crtc->x, crtc->y);
}

static bool need_vtd_wa(struct drm_device *dev)
@@ -2438,6 +2426,15 @@ static void i9xx_update_primary_plane(struct drm_crtc *crtc,
u32 dspcntr;
u32 reg = DSPCNTR(plane);

+ if (!intel_crtc->primary_enabled) {
+ I915_WRITE(reg, 0);
+ if (INTEL_INFO(dev)->gen >= 4)
+ I915_WRITE(DSPSURF(plane), 0);
+ else
+ I915_WRITE(DSPADDR(plane), 0);
+ return;
+ }
+
intel_fb = to_intel_framebuffer(fb);
obj = intel_fb->obj;

@@ -2539,6 +2536,12 @@ static void ironlake_update_primary_plane(struct drm_crtc *crtc,
u32 dspcntr;
u32 reg = DSPCNTR(plane);

+ if (!intel_crtc->primary_enabled) {
+ I915_WRITE(reg, 0);
+ I915_WRITE(DSPSURF(plane), 0);
+ return;
+ }
+
intel_fb = to_intel_framebuffer(fb);
obj = intel_fb->obj;

@@ -3961,11 +3964,10 @@ static void intel_crtc_enable_planes(struct drm_crtc *crtc)
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
int pipe = intel_crtc->pipe;
- int plane = intel_crtc->plane;

drm_vblank_on(dev, pipe);

- intel_enable_primary_hw_plane(dev_priv, plane, pipe);
+ intel_enable_primary_hw_plane(crtc->primary, crtc);
intel_enable_planes(crtc);
/* The fixup needs to happen before cursor is enabled */
if (IS_G4X(dev))
@@ -3999,7 +4001,7 @@ static void intel_crtc_disable_planes(struct drm_crtc *crtc)
intel_crtc_dpms_overlay(intel_crtc, false);
intel_crtc_update_cursor(crtc, false);
intel_disable_planes(crtc);
- intel_disable_primary_hw_plane(dev_priv, plane, pipe);
+ intel_disable_primary_hw_plane(crtc->primary, crtc);

drm_vblank_off(dev, pipe);
}
@@ -4032,9 +4034,6 @@ static void ironlake_crtc_enable(struct drm_crtc *crtc)

ironlake_set_pipeconf(crtc);

- dev_priv->display.update_primary_plane(crtc, crtc->primary->fb,
- crtc->x, crtc->y);
-
intel_crtc->active = true;

intel_set_cpu_fifo_underrun_reporting(dev, pipe, true);
@@ -4139,9 +4138,6 @@ static void haswell_crtc_enable(struct drm_crtc *crtc)

intel_set_pipe_csc(crtc);

- dev_priv->display.update_primary_plane(crtc, crtc->primary->fb,
- crtc->x, crtc->y);
-
intel_crtc->active = true;

intel_set_cpu_fifo_underrun_reporting(dev, pipe, true);
@@ -4620,7 +4616,6 @@ static void valleyview_modeset_global_resources(struct drm_device *dev)
static void valleyview_crtc_enable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_encoder *encoder;
int pipe = intel_crtc->pipe;
@@ -4640,9 +4635,6 @@ static void valleyview_crtc_enable(struct drm_crtc *crtc)

i9xx_set_pipeconf(intel_crtc);

- dev_priv->display.update_primary_plane(crtc, crtc->primary->fb,
- crtc->x, crtc->y);
-
intel_crtc->active = true;

intel_set_cpu_fifo_underrun_reporting(dev, pipe, true);
@@ -4692,7 +4684,6 @@ static void i9xx_set_pll_dividers(struct intel_crtc *crtc)
static void i9xx_crtc_enable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_encoder *encoder;
int pipe = intel_crtc->pipe;
@@ -4711,9 +4702,6 @@ static void i9xx_crtc_enable(struct drm_crtc *crtc)

i9xx_set_pipeconf(intel_crtc);

- dev_priv->display.update_primary_plane(crtc, crtc->primary->fb,
- crtc->x, crtc->y);
-
intel_crtc->active = true;

if (!IS_GEN2(dev))
@@ -10860,7 +10848,6 @@ static int intel_crtc_set_config(struct drm_mode_set *set)
ret = intel_set_mode(set->crtc, set->mode,
set->x, set->y, set->fb);
} else if (config->fb_changed) {
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(set->crtc);

intel_crtc_wait_for_pending_flips(set->crtc);
@@ -10874,8 +10861,7 @@ static int intel_crtc_set_config(struct drm_mode_set *set)
*/
if (!intel_crtc->primary_enabled && ret == 0) {
WARN_ON(!intel_crtc->active);
- intel_enable_primary_hw_plane(dev_priv, intel_crtc->plane,
- intel_crtc->pipe);
+ intel_enable_primary_hw_plane(set->crtc->primary, set->crtc);
}

/*
@@ -11030,9 +11016,6 @@ static void intel_shared_dpll_init(struct drm_device *dev)
static int
intel_primary_plane_disable(struct drm_plane *plane)
{
- 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 intel_crtc *intel_crtc;

if (!plane->fb)
@@ -11055,8 +11038,7 @@ intel_primary_plane_disable(struct drm_plane *plane)
goto disable_unpin;

intel_crtc_wait_for_pending_flips(plane->crtc);
- intel_disable_primary_hw_plane(dev_priv, intel_plane->plane,
- intel_plane->pipe);
+ intel_disable_primary_hw_plane(plane, plane->crtc);

disable_unpin:
intel_unpin_fb_obj(to_intel_framebuffer(plane->fb)->obj);
@@ -11073,9 +11055,7 @@ intel_primary_plane_setplane(struct drm_plane *plane, struct drm_crtc *crtc,
uint32_t src_w, uint32_t src_h)
{
struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct intel_plane *intel_plane = to_intel_plane(plane);
struct drm_rect dest = {
/* integer pixels */
.x1 = crtc_x,
@@ -11149,9 +11129,7 @@ intel_primary_plane_setplane(struct drm_plane *plane, struct drm_crtc *crtc,
}

if (intel_crtc->primary_enabled)
- intel_disable_primary_hw_plane(dev_priv,
- intel_plane->plane,
- intel_plane->pipe);
+ intel_disable_primary_hw_plane(plane, crtc);

if (plane->fb != fb)
@@ -11166,8 +11144,7 @@ intel_primary_plane_setplane(struct drm_plane *plane, struct drm_crtc *crtc,
return ret;

if (!intel_crtc->primary_enabled)
- intel_enable_primary_hw_plane(dev_priv, intel_crtc->plane,
- intel_crtc->pipe);
+ intel_enable_primary_hw_plane(plane, crtc);

return 0;
}
--
1.8.5.5

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