From 99ac9612799475bdd4e3a7a0f0f40a93d6c9eaa6 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 13 Jul 2016 09:10:34 +0100 Subject: [PATCH] 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 Reviewed-by: Mika Kuoppala Link: http://patchwork.freedesktop.org/patch/msgid/1468397438-21226-4-git-send-email-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/intel_pm.c | 24 +++++++++++++++--------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 54f739f..24b23a5 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -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, ¶ms); + 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); } -- 2.7.4