diff options
author | Imre Deak <imre.deak@intel.com> | 2014-07-01 12:36:17 +0300 |
---|---|---|
committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2014-07-07 11:33:36 +0200 |
commit | 5209b1f4c4f8036f52f5ac2df2afc806254f247f (patch) | |
tree | 6935ff6a0c599d8b145ab99cae02b3db1b0ad97e /drivers/gpu/drm/i915/intel_pm.c | |
parent | d2011dc8d41b20dc0ec0bf741c61fe500dc8d0bc (diff) | |
download | op-kernel-dev-5209b1f4c4f8036f52f5ac2df2afc806254f247f.zip op-kernel-dev-5209b1f4c4f8036f52f5ac2df2afc806254f247f.tar.gz |
drm/i915: gmch: factor out intel_set_memory_cxsr
This functionality will be also needed by an upcoming patch, so factor
it out. As a bonus this also makes things a bit more uniform across
platforms. Note that this also changes the register read-modify-write
to a simple write during disabling. This is what we do during enabling
anyway and according to the spec all the relevant bits are reserved-MBZ
or reserved with a 0 default value.
v2:
- unchanged
v3:
- fix missing cxsr disabling on pineview (Deepak)
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_pm.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 76 |
1 files changed, 38 insertions, 38 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 01498fa..ded4294 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -816,12 +816,33 @@ static const struct cxsr_latency *intel_get_cxsr_latency(int is_desktop, return NULL; } -static void pineview_disable_cxsr(struct drm_device *dev) +void intel_set_memory_cxsr(struct drm_i915_private *dev_priv, bool enable) { - struct drm_i915_private *dev_priv = dev->dev_private; + struct drm_device *dev = dev_priv->dev; + u32 val; - /* deactivate cxsr */ - I915_WRITE(DSPFW3, I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN); + if (IS_VALLEYVIEW(dev)) { + I915_WRITE(FW_BLC_SELF_VLV, enable ? FW_CSPWRDWNEN : 0); + } else if (IS_G4X(dev) || IS_CRESTLINE(dev)) { + I915_WRITE(FW_BLC_SELF, enable ? FW_BLC_SELF_EN : 0); + } else if (IS_PINEVIEW(dev)) { + val = I915_READ(DSPFW3) & ~PINEVIEW_SELF_REFRESH_EN; + val |= enable ? PINEVIEW_SELF_REFRESH_EN : 0; + I915_WRITE(DSPFW3, val); + } else if (IS_I945G(dev) || IS_I945GM(dev)) { + val = enable ? _MASKED_BIT_ENABLE(FW_BLC_SELF_EN) : + _MASKED_BIT_DISABLE(FW_BLC_SELF_EN); + I915_WRITE(FW_BLC_SELF, val); + } else if (IS_I915GM(dev)) { + val = enable ? _MASKED_BIT_ENABLE(INSTPM_SELF_EN) : + _MASKED_BIT_DISABLE(INSTPM_SELF_EN); + I915_WRITE(INSTPM, val); + } else { + return; + } + + DRM_DEBUG_KMS("memory self-refresh is %s\n", + enable ? "enabled" : "disabled"); } /* @@ -1060,7 +1081,7 @@ static void pineview_update_wm(struct drm_crtc *unused_crtc) dev_priv->fsb_freq, dev_priv->mem_freq); if (!latency) { DRM_DEBUG_KMS("Unknown FSB/MEM found, disable CxSR\n"); - pineview_disable_cxsr(dev); + intel_set_memory_cxsr(dev_priv, false); return; } @@ -1111,13 +1132,9 @@ static void pineview_update_wm(struct drm_crtc *unused_crtc) I915_WRITE(DSPFW3, reg); DRM_DEBUG_KMS("DSPFW3 register is %x\n", reg); - /* activate cxsr */ - I915_WRITE(DSPFW3, - I915_READ(DSPFW3) | PINEVIEW_SELF_REFRESH_EN); - DRM_DEBUG_KMS("Self-refresh is enabled\n"); + intel_set_memory_cxsr(dev_priv, true); } else { - pineview_disable_cxsr(dev); - DRM_DEBUG_KMS("Self-refresh is disabled\n"); + intel_set_memory_cxsr(dev_priv, false); } } @@ -1369,10 +1386,9 @@ static void valleyview_update_wm(struct drm_crtc *crtc) &valleyview_wm_info, &valleyview_cursor_wm_info, &ignore_plane_sr, &cursor_sr)) { - I915_WRITE(FW_BLC_SELF_VLV, FW_CSPWRDWNEN); + intel_set_memory_cxsr(dev_priv, true); } else { - I915_WRITE(FW_BLC_SELF_VLV, - I915_READ(FW_BLC_SELF_VLV) & ~FW_CSPWRDWNEN); + intel_set_memory_cxsr(dev_priv, false); plane_sr = cursor_sr = 0; } @@ -1421,10 +1437,9 @@ static void g4x_update_wm(struct drm_crtc *crtc) &g4x_wm_info, &g4x_cursor_wm_info, &plane_sr, &cursor_sr)) { - I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); + intel_set_memory_cxsr(dev_priv, true); } else { - I915_WRITE(FW_BLC_SELF, - I915_READ(FW_BLC_SELF) & ~FW_BLC_SELF_EN); + intel_set_memory_cxsr(dev_priv, false); plane_sr = cursor_sr = 0; } @@ -1495,13 +1510,10 @@ static void i965_update_wm(struct drm_crtc *unused_crtc) DRM_DEBUG_KMS("self-refresh watermark: display plane %d " "cursor %d\n", srwm, cursor_sr); - if (IS_CRESTLINE(dev)) - I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN); + intel_set_memory_cxsr(dev_priv, true); } else { /* Turn off self refresh if both pipes are enabled */ - if (IS_CRESTLINE(dev)) - I915_WRITE(FW_BLC_SELF, I915_READ(FW_BLC_SELF) - & ~FW_BLC_SELF_EN); + intel_set_memory_cxsr(dev_priv, false); } DRM_DEBUG_KMS("Setting FIFO watermarks - A: 8, B: 8, C: 8, SR %d\n", @@ -1587,10 +1599,7 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc) cwm = 2; /* Play safe and disable self-refresh before adjusting watermarks. */ - if (IS_I945G(dev) || IS_I945GM(dev)) - I915_WRITE(FW_BLC_SELF, FW_BLC_SELF_EN_MASK | 0); - else if (IS_I915GM(dev)) - I915_WRITE(INSTPM, _MASKED_BIT_DISABLE(INSTPM_SELF_EN)); + intel_set_memory_cxsr(dev_priv, false); /* Calc sr entries for one plane configs */ if (HAS_FW_BLC(dev) && enabled) { @@ -1636,17 +1645,8 @@ static void i9xx_update_wm(struct drm_crtc *unused_crtc) I915_WRITE(FW_BLC, fwater_lo); I915_WRITE(FW_BLC2, fwater_hi); - if (HAS_FW_BLC(dev)) { - if (enabled) { - if (IS_I945G(dev) || IS_I945GM(dev)) - I915_WRITE(FW_BLC_SELF, - FW_BLC_SELF_EN_MASK | FW_BLC_SELF_EN); - else if (IS_I915GM(dev)) - I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_SELF_EN)); - DRM_DEBUG_KMS("memory self refresh enabled\n"); - } else - DRM_DEBUG_KMS("memory self refresh disabled\n"); - } + if (enabled) + intel_set_memory_cxsr(dev_priv, true); } static void i845_update_wm(struct drm_crtc *unused_crtc) @@ -6782,7 +6782,7 @@ void intel_init_pm(struct drm_device *dev) (dev_priv->is_ddr3 == 1) ? "3" : "2", dev_priv->fsb_freq, dev_priv->mem_freq); /* Disable CxSR and never update its watermark again */ - pineview_disable_cxsr(dev); + intel_set_memory_cxsr(dev_priv, false); dev_priv->display.update_wm = NULL; } else dev_priv->display.update_wm = pineview_update_wm; |