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drm/i915: Move Pineview CxSR and watermark code into update_wm hook. 

Previously, after setting up the Pineview CxSR state, i9xx_update_wm would
get called and overwrite our state.

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@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
This commit is contained in:
Zhao Yakui 2010-03-22 22:45:36 +08:00 committed by Eric Anholt
parent a2c459ee9a
commit d4294342fd
2 changed files with 88 additions and 74 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/gpu/drm/i915/i915_reg.h
View File

@ -1986,15 +1986,24 @@
#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

153
drivers/gpu/drm/i915/intel_display.c
View File

@ -2645,66 +2645,6 @@ 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)
@ -2789,6 +2729,71 @@ 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)
{
@ -3078,12 +3083,6 @@ 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);
}
@ -5091,7 +5090,20 @@ 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;
@ -5164,13 +5176,6 @@ 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)