[Intel-gfx] [PATCH 3/3] drm/i915: Add pineview_update_wm callback to update watermark for pineview
Zhenyu Wang
zhenyuw at linux.intel.com
Tue Mar 23 04:02:15 CET 2010
Now we don't define the update_wm callback function explicitly for
pineview platform. But as it also belongs to mobile platform, we will
use the function of i9xx_update_wm function to update its watermark again
after we configure the watermark. This is incorrect.
So we will add a update_wm callback function for pineview to update watermark.
BTW: We will disable the self-refresh and never enable it any more if we
can't find the appropriate the latency on pineview plaftorm. In such case
the update_wm callback will be NULL.
The bitmask macro is also defined to access the corresponding fifo
watermark register.
Signed-off-by: Zhao Yakui <yakui.zhao at intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw at linux.intel.com>
---
drivers/gpu/drm/i915/i915_reg.h | 9 ++
drivers/gpu/drm/i915/intel_display.c | 153 +++++++++++++++++----------------
2 files changed, 88 insertions(+), 74 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 36ebc12..b004907 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1998,15 +1998,24 @@
#define DSPFW1 0x70034
#define DSPFW_SR_SHIFT 23
+#define DSPFW_SR_MASK (0x1ff<<23)
#define DSPFW_CURSORB_SHIFT 16
+#define DSPFW_CURSORB_MASK (0x3f<<16)
#define DSPFW_PLANEB_SHIFT 8
+#define DSPFW_PLANEB_MASK (0x7f<<8)
+#define DSPFW_PLANEA_MASK (0x7f)
#define DSPFW2 0x70038
#define DSPFW_CURSORA_MASK 0x00003f00
#define DSPFW_CURSORA_SHIFT 8
+#define DSPFW_PLANEC_MASK (0x7f)
#define DSPFW3 0x7003c
#define DSPFW_HPLL_SR_EN (1<<31)
#define DSPFW_CURSOR_SR_SHIFT 24
#define PINEVIEW_SELF_REFRESH_EN (1<<30)
+#define DSPFW_CURSOR_SR_MASK (0x3f<<24)
+#define DSPFW_HPLL_CURSOR_SHIFT 16
+#define DSPFW_HPLL_CURSOR_MASK (0x3f<<16)
+#define DSPFW_HPLL_SR_MASK (0x1ff)
/* FIFO watermark sizes etc */
#define G4X_FIFO_LINE_SIZE 64
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index fe15fa1..e9f706c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2514,66 +2514,6 @@ static void pineview_disable_cxsr(struct drm_device *dev)
DRM_INFO("Big FIFO is disabled\n");
}
-static void pineview_enable_cxsr(struct drm_device *dev, unsigned long clock,
- int pixel_size)
-{
- struct drm_i915_private *dev_priv = dev->dev_private;
- u32 reg;
- unsigned long wm;
- struct cxsr_latency *latency;
-
- latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->fsb_freq,
- dev_priv->mem_freq);
- if (!latency) {
- DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
- pineview_disable_cxsr(dev);
- return;
- }
-
- /* Display SR */
- wm = intel_calculate_wm(clock, &pineview_display_wm, pixel_size,
- latency->display_sr);
- reg = I915_READ(DSPFW1);
- reg &= 0x7fffff;
- reg |= wm << 23;
- I915_WRITE(DSPFW1, reg);
- DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
-
- /* cursor SR */
- wm = intel_calculate_wm(clock, &pineview_cursor_wm, pixel_size,
- latency->cursor_sr);
- reg = I915_READ(DSPFW3);
- reg &= ~(0x3f << 24);
- reg |= (wm & 0x3f) << 24;
- I915_WRITE(DSPFW3, reg);
-
- /* Display HPLL off SR */
- wm = intel_calculate_wm(clock, &pineview_display_hplloff_wm,
- latency->display_hpll_disable, I915_FIFO_LINE_SIZE);
- reg = I915_READ(DSPFW3);
- reg &= 0xfffffe00;
- reg |= wm & 0x1ff;
- I915_WRITE(DSPFW3, reg);
-
- /* cursor HPLL off SR */
- wm = intel_calculate_wm(clock, &pineview_cursor_hplloff_wm, pixel_size,
- latency->cursor_hpll_disable);
- reg = I915_READ(DSPFW3);
- reg &= ~(0x3f << 16);
- reg |= (wm & 0x3f) << 16;
- I915_WRITE(DSPFW3, reg);
- DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
-
- /* activate cxsr */
- reg = I915_READ(DSPFW3);
- reg |= PINEVIEW_SELF_REFRESH_EN;
- I915_WRITE(DSPFW3, reg);
-
- DRM_INFO("Big FIFO is enabled\n");
-
- return;
-}
-
/*
* Latency for FIFO fetches is dependent on several factors:
* - memory configuration (speed, channels)
@@ -2658,6 +2598,71 @@ static int i830_get_fifo_size(struct drm_device *dev, int plane)
return size;
}
+static void pineview_update_wm(struct drm_device *dev, int planea_clock,
+ int planeb_clock, int sr_hdisplay, int pixel_size)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ u32 reg;
+ unsigned long wm;
+ struct cxsr_latency *latency;
+ int sr_clock;
+
+ latency = intel_get_cxsr_latency(IS_PINEVIEW_G(dev), dev_priv->fsb_freq,
+ dev_priv->mem_freq);
+ if (!latency) {
+ DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n");
+ pineview_disable_cxsr(dev);
+ return;
+ }
+
+ if (!planea_clock || !planeb_clock) {
+ sr_clock = planea_clock ? planea_clock : planeb_clock;
+
+ /* Display SR */
+ wm = intel_calculate_wm(sr_clock, &pineview_display_wm,
+ pixel_size, latency->display_sr);
+ reg = I915_READ(DSPFW1);
+ reg &= ~DSPFW_SR_MASK;
+ reg |= wm << DSPFW_SR_SHIFT;
+ I915_WRITE(DSPFW1, reg);
+ DRM_DEBUG_KMS("DSPFW1 register is %x\n", reg);
+
+ /* cursor SR */
+ wm = intel_calculate_wm(sr_clock, &pineview_cursor_wm,
+ pixel_size, latency->cursor_sr);
+ reg = I915_READ(DSPFW3);
+ reg &= ~DSPFW_CURSOR_SR_MASK;
+ reg |= (wm & 0x3f) << DSPFW_CURSOR_SR_SHIFT;
+ I915_WRITE(DSPFW3, reg);
+
+ /* Display HPLL off SR */
+ wm = intel_calculate_wm(sr_clock, &pineview_display_hplloff_wm,
+ pixel_size, latency->display_hpll_disable);
+ reg = I915_READ(DSPFW3);
+ reg &= ~DSPFW_HPLL_SR_MASK;
+ reg |= wm & DSPFW_HPLL_SR_MASK;
+ I915_WRITE(DSPFW3, reg);
+
+ /* cursor HPLL off SR */
+ wm = intel_calculate_wm(sr_clock, &pineview_cursor_hplloff_wm,
+ pixel_size, latency->cursor_hpll_disable);
+ reg = I915_READ(DSPFW3);
+ reg &= ~DSPFW_HPLL_CURSOR_MASK;
+ reg |= (wm & 0x3f) << DSPFW_HPLL_CURSOR_SHIFT;
+ I915_WRITE(DSPFW3, reg);
+ DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg);
+
+ /* activate cxsr */
+ reg = I915_READ(DSPFW3);
+ reg |= PINEVIEW_SELF_REFRESH_EN;
+ I915_WRITE(DSPFW3, reg);
+ DRM_DEBUG_KMS("Self-refresh is enabled\n");
+ } else {
+ pineview_disable_cxsr(dev);
+ DRM_DEBUG_KMS("Self-refresh is disabled\n");
+ }
+}
+
static void g4x_update_wm(struct drm_device *dev, int planea_clock,
int planeb_clock, int sr_hdisplay, int pixel_size)
{
@@ -2947,12 +2952,6 @@ static void intel_update_watermarks(struct drm_device *dev)
if (enabled <= 0)
return;
- /* Single plane configs can enable self refresh */
- if (enabled == 1 && IS_PINEVIEW(dev))
- pineview_enable_cxsr(dev, sr_clock, pixel_size);
- else if (IS_PINEVIEW(dev))
- pineview_disable_cxsr(dev);
-
dev_priv->display.update_wm(dev, planea_clock, planeb_clock,
sr_hdisplay, pixel_size);
}
@@ -4923,7 +4922,20 @@ static void intel_init_display(struct drm_device *dev)
/* For FIFO watermark updates */
if (HAS_PCH_SPLIT(dev))
dev_priv->display.update_wm = NULL;
- else if (IS_G4X(dev))
+ else if (IS_PINEVIEW(dev)) {
+ if (!intel_get_cxsr_latency(IS_PINEVIEW_G(dev),
+ dev_priv->fsb_freq,
+ dev_priv->mem_freq)) {
+ DRM_INFO("failed to find known CxSR latency "
+ "(found fsb freq %d, mem freq %d), "
+ "disabling CxSR\n",
+ dev_priv->fsb_freq, dev_priv->mem_freq);
+ /* Disable CxSR and never update its watermark again */
+ pineview_disable_cxsr(dev);
+ dev_priv->display.update_wm = NULL;
+ } else
+ dev_priv->display.update_wm = pineview_update_wm;
+ } else if (IS_G4X(dev))
dev_priv->display.update_wm = g4x_update_wm;
else if (IS_I965G(dev))
dev_priv->display.update_wm = i965_update_wm;
@@ -4996,13 +5008,6 @@ void intel_modeset_init(struct drm_device *dev)
(unsigned long)dev);
intel_setup_overlay(dev);
-
- if (IS_PINEVIEW(dev) && !intel_get_cxsr_latency(IS_PINEVIEW_G(dev),
- dev_priv->fsb_freq,
- dev_priv->mem_freq))
- DRM_INFO("failed to find known CxSR latency "
- "(found fsb freq %d, mem freq %d), disabling CxSR\n",
- dev_priv->fsb_freq, dev_priv->mem_freq);
}
void intel_modeset_cleanup(struct drm_device *dev)
--
1.6.3.3
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