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drm/i915: Move overclocking detection to alongside RPS frequency detection 

Move the overclocking max frequency detection alongside the regular
frequency detection, before we expose the undefined value to userspace.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1468397438-21226-4-git-send-email-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2016-07-13 09:10:34 +01:00
parent 773ea9a801
commit 99ac961279
1 changed files with 15 additions and 9 deletions
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24
drivers/gpu/drm/i915/intel_pm.c
View File

@ -5343,7 +5343,7 @@ static void gen8_enable_rps(struct drm_i915_private *dev_priv)
static void gen6_enable_rps(struct drm_i915_private *dev_priv)
{
struct intel_engine_cs *engine;
u32 rc6vids, pcu_mbox = 0, rc6_mask = 0;
u32 rc6vids, rc6_mask = 0;
u32 gtfifodbg;
int rc6_mode;
int ret;
@ -5417,14 +5417,6 @@ static void gen6_enable_rps(struct drm_i915_private *dev_priv)
if (ret)
DRM_DEBUG_DRIVER("Failed to set the min frequency\n");
ret = sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, &pcu_mbox);
if (!ret && (pcu_mbox & (1<<31))) { /* OC supported */
DRM_DEBUG_DRIVER("Overclocking supported. Max: %dMHz, Overclock max: %dMHz\n",
(dev_priv->rps.max_freq_softlimit & 0xff) * 50,
(pcu_mbox & 0xff) * 50);
dev_priv->rps.max_freq = pcu_mbox & 0xff;
}
reset_rps(dev_priv, gen6_set_rps);
rc6vids = 0;
@ -6526,6 +6518,20 @@ void intel_init_gt_powersave(struct drm_i915_private *dev_priv)
dev_priv->rps.efficient_freq,
intel_freq_opcode(dev_priv, 450));
/* After setting max-softlimit, find the overclock max freq */
if (IS_GEN6(dev_priv) ||
IS_IVYBRIDGE(dev_priv) || IS_HASWELL(dev_priv)) {
u32 params = 0;
sandybridge_pcode_read(dev_priv, GEN6_READ_OC_PARAMS, &params);
if (params & BIT(31)) { /* OC supported */
DRM_DEBUG_DRIVER("Overclocking supported, max: %dMHz, overclock: %dMHz\n",
(dev_priv->rps.max_freq & 0xff) * 50,
(params & 0xff) * 50);
dev_priv->rps.max_freq = params & 0xff;
}
}
mutex_unlock(&dev_priv->rps.hw_lock);
}