openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915/chv: Set min freq to efficient frequency on chv 

After feedback from the hardware team, now we set the GPU min/idel freq to RPe.
Punit is expecting us to operate GPU between Rpe & Rp0. If we drop the
frequency to RPn, punit is failing to change the vgg input voltage to
minimum :(

Since Punit validates the rps range [RPe, RP0]. This patch
removes unused cherryview_rps_min_freq function.

v2: Change commit message

v3: set min_freq before idle_freq (chris)

v4: Squash 'Remove unused rps min function' patch

Signed-off-by: Deepak S <deepak.s@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Deepak S 2015-05-09 18:15:46 +05:30 committed by Daniel Vetter
parent 4a7624f664
commit 5b7c91b78b
1 changed files with 2 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/gpu/drm/i915/intel_pm.c
View File

@ -4743,24 +4743,6 @@ static int cherryview_rps_guar_freq(struct drm_i915_private *dev_priv)
return rp1;
}
static int cherryview_rps_min_freq(struct drm_i915_private *dev_priv)
{
struct drm_device *dev = dev_priv->dev;
u32 val, rpn;
if (dev->pdev->revision >= 0x20) {
val = vlv_punit_read(dev_priv, FB_GFX_FMIN_AT_VMIN_FUSE);
rpn = ((val >> FB_GFX_FMIN_AT_VMIN_FUSE_SHIFT) &
FB_GFX_FREQ_FUSE_MASK);
} else { /* For pre-production hardware */
val = vlv_punit_read(dev_priv, PUNIT_GPU_STATUS_REG);
rpn = ((val >> PUNIT_GPU_STATIS_GFX_MIN_FREQ_SHIFT) &
PUNIT_GPU_STATUS_GFX_MIN_FREQ_MASK);
}
return rpn;
}
static int valleyview_rps_guar_freq(struct drm_i915_private *dev_priv)
{
u32 val, rp1;
@ -5012,7 +4994,8 @@ static void cherryview_init_gt_powersave(struct drm_device *dev)
intel_gpu_freq(dev_priv, dev_priv->rps.rp1_freq),
dev_priv->rps.rp1_freq);
dev_priv->rps.min_freq = cherryview_rps_min_freq(dev_priv);
/* PUnit validated range is only [RPe, RP0] */
dev_priv->rps.min_freq = dev_priv->rps.efficient_freq;
DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n",
intel_gpu_freq(dev_priv, dev_priv->rps.min_freq),
dev_priv->rps.min_freq);