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drm/i915: split i9xx CRTC enable/disable code 

So we can use it for CRTC prepare/commit.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Jesse Barnes 2010-09-10 10:31:34 -07:00 committed by Chris Wilson
parent 6be4a6078e
commit 0b8765c6e7
1 changed files with 105 additions and 84 deletions
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43
drivers/gpu/drm/i915/intel_display.c
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@ -2262,7 +2262,7 @@ static void intel_crtc_dpms_overlay(struct intel_crtc *intel_crtc, bool enable)
*/
}
static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
static void i9xx_crtc_enable(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
@ -2275,13 +2275,6 @@ static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
u32 temp;
/* XXX: When our outputs are all unaware of DPMS modes other than off
* and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
*/
switch (mode) {
case DRM_MODE_DPMS_ON:
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
/* Enable the DPLL */
temp = I915_READ(dpll_reg);
if ((temp & DPLL_VCO_ENABLE) == 0) {
@ -2319,8 +2312,21 @@ static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
/* Give the overlay scaler a chance to enable if it's on this pipe */
intel_crtc_dpms_overlay(intel_crtc, true);
break;
case DRM_MODE_DPMS_OFF:
}
static void i9xx_crtc_disable(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);
int pipe = intel_crtc->pipe;
int plane = intel_crtc->plane;
int dpll_reg = (pipe == 0) ? DPLL_A : DPLL_B;
int dspcntr_reg = (plane == 0) ? DSPACNTR : DSPBCNTR;
int dspbase_reg = (plane == 0) ? DSPAADDR : DSPBADDR;
int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
u32 temp;
/* Give the overlay scaler a chance to disable if it's on this pipe */
intel_crtc_dpms_overlay(intel_crtc, false);
drm_vblank_off(dev, pipe);
@ -2363,9 +2369,24 @@ static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
I915_WRITE(dpll_reg, temp & ~DPLL_VCO_ENABLE);
I915_READ(dpll_reg);
}
skip_pipe_off:
skip_pipe_off:
/* Wait for the clocks to turn off. */
udelay(150);
}
static void i9xx_crtc_dpms(struct drm_crtc *crtc, int mode)
{
/* XXX: When our outputs are all unaware of DPMS modes other than off
* and on, we should map those modes to DRM_MODE_DPMS_OFF in the CRTC.
*/
switch (mode) {
case DRM_MODE_DPMS_ON:
case DRM_MODE_DPMS_STANDBY:
case DRM_MODE_DPMS_SUSPEND:
i9xx_crtc_enable(crtc);
break;
case DRM_MODE_DPMS_OFF:
i9xx_crtc_disable(crtc);
break;
}
}