From 2a5913a8670a6925c04e397e0a8ebd72cb4b2d26 Mon Sep 17 00:00:00 2001 From: Ben Widawsky Date: Wed, 19 Mar 2014 18:31:13 -0700 Subject: [PATCH] drm/i915: remove rps local variables With the renamed RPS struct members, it's easier to skip the local variables which no longer clarify anything, and if anything just make the code harder to read. The real motivation for this patch is actually the next patch, which attempts to consolidate some of the functionality. Cc: Jeff McGee Signed-off-by: Ben Widawsky Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_sysfs.c | 36 ++++++++++------------------ drivers/gpu/drm/i915/intel_pm.c | 40 ++++++++++++++++--------------- 2 files changed, 33 insertions(+), 43 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 49554d9a6b71..9c57029f6f4b 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -313,7 +313,7 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev, struct drm_minor *minor = dev_to_drm_minor(kdev); struct drm_device *dev = minor->dev; struct drm_i915_private *dev_priv = dev->dev_private; - u32 val, hw_max, hw_min, non_oc_max; + u32 val; ssize_t ret; ret = kstrtou32(buf, 0, &val); @@ -324,26 +324,19 @@ static ssize_t gt_max_freq_mhz_store(struct device *kdev, mutex_lock(&dev_priv->rps.hw_lock); - if (IS_VALLEYVIEW(dev_priv->dev)) { + if (IS_VALLEYVIEW(dev_priv->dev)) val = vlv_freq_opcode(dev_priv, val); - - non_oc_max = hw_max = dev_priv->rps.max_freq; - hw_min = dev_priv->rps.min_freq; - } else { + else val /= GT_FREQUENCY_MULTIPLIER; - hw_max = dev_priv->rps.max_freq; - non_oc_max = dev_priv->rps.rp0_freq; - hw_min = dev_priv->rps.min_freq; - } - - if (val < hw_min || val > hw_max || + if (val < dev_priv->rps.min_freq || + val > dev_priv->rps.max_freq || val < dev_priv->rps.min_freq_softlimit) { mutex_unlock(&dev_priv->rps.hw_lock); return -EINVAL; } - if (val > non_oc_max) + if (val > dev_priv->rps.rp0_freq) DRM_DEBUG("User requested overclocking to %d\n", val * GT_FREQUENCY_MULTIPLIER); @@ -392,7 +385,7 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev, struct drm_minor *minor = dev_to_drm_minor(kdev); struct drm_device *dev = minor->dev; struct drm_i915_private *dev_priv = dev->dev_private; - u32 val, hw_max, hw_min; + u32 val; ssize_t ret; ret = kstrtou32(buf, 0, &val); @@ -403,19 +396,14 @@ static ssize_t gt_min_freq_mhz_store(struct device *kdev, mutex_lock(&dev_priv->rps.hw_lock); - if (IS_VALLEYVIEW(dev)) { + if (IS_VALLEYVIEW(dev)) val = vlv_freq_opcode(dev_priv, val); - - hw_max = dev_priv->rps.max_freq; - hw_min = dev_priv->rps.min_freq; - } else { + else val /= GT_FREQUENCY_MULTIPLIER; - hw_max = dev_priv->rps.max_freq; - hw_min = dev_priv->rps.min_freq; - } - - if (val < hw_min || val > hw_max || val > dev_priv->rps.max_freq_softlimit) { + if (val < dev_priv->rps.min_freq || + val > dev_priv->rps.max_freq || + val > dev_priv->rps.max_freq_softlimit) { mutex_unlock(&dev_priv->rps.hw_lock); return -EINVAL; } diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 3db7c40cc9ae..fd68f93671bb 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3324,7 +3324,7 @@ static void gen6_enable_rps(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; struct intel_ring_buffer *ring; - u32 rp_state_cap, hw_max, hw_min; + u32 rp_state_cap; u32 gt_perf_status; u32 rc6vids, pcu_mbox = 0, rc6_mask = 0; u32 gtfifodbg; @@ -3353,21 +3353,22 @@ static void gen6_enable_rps(struct drm_device *dev) gt_perf_status = I915_READ(GEN6_GT_PERF_STATUS); /* All of these values are in units of 50MHz */ - dev_priv->rps.cur_freq = 0; - /* hw_max = RP0 until we check for overclocking */ - dev_priv->rps.max_freq = hw_max = rp_state_cap & 0xff; + dev_priv->rps.cur_freq = 0; /* static values from HW: RP0 < RPe < RP1 < RPn (min_freq) */ - dev_priv->rps.rp1_freq = (rp_state_cap >> 8) & 0xff; - dev_priv->rps.rp0_freq = (rp_state_cap >> 0) & 0xff; - dev_priv->rps.efficient_freq = dev_priv->rps.rp1_freq; - dev_priv->rps.min_freq = hw_min = (rp_state_cap >> 16) & 0xff; + dev_priv->rps.rp1_freq = (rp_state_cap >> 8) & 0xff; + dev_priv->rps.rp0_freq = (rp_state_cap >> 0) & 0xff; + dev_priv->rps.min_freq = (rp_state_cap >> 16) & 0xff; + /* XXX: only BYT has a special efficient freq */ + dev_priv->rps.efficient_freq = dev_priv->rps.rp1_freq; + /* hw_max = RP0 until we check for overclocking */ + dev_priv->rps.max_freq = dev_priv->rps.rp0_freq; /* Preserve min/max settings in case of re-init */ if (dev_priv->rps.max_freq_softlimit == 0) - dev_priv->rps.max_freq_softlimit = hw_max; + dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; if (dev_priv->rps.min_freq_softlimit == 0) - dev_priv->rps.min_freq_softlimit = hw_min; + dev_priv->rps.min_freq_softlimit = dev_priv->rps.min_freq; /* disable the counters and set deterministic thresholds */ I915_WRITE(GEN6_RC_CONTROL, 0); @@ -3597,7 +3598,7 @@ static void valleyview_enable_rps(struct drm_device *dev) { struct drm_i915_private *dev_priv = dev->dev_private; struct intel_ring_buffer *ring; - u32 gtfifodbg, val, hw_max, hw_min, rc6_mode = 0; + u32 gtfifodbg, val, rc6_mode = 0; int i; WARN_ON(!mutex_is_locked(&dev_priv->rps.hw_lock)); @@ -3657,27 +3658,28 @@ static void valleyview_enable_rps(struct drm_device *dev) vlv_gpu_freq(dev_priv, dev_priv->rps.cur_freq), dev_priv->rps.cur_freq); - dev_priv->rps.max_freq = hw_max = valleyview_rps_max_freq(dev_priv); + dev_priv->rps.max_freq = valleyview_rps_max_freq(dev_priv); + dev_priv->rps.rp0_freq = dev_priv->rps.max_freq; DRM_DEBUG_DRIVER("max GPU freq: %d MHz (%u)\n", - vlv_gpu_freq(dev_priv, hw_max), - hw_max); + vlv_gpu_freq(dev_priv, dev_priv->rps.max_freq), + dev_priv->rps.max_freq); dev_priv->rps.efficient_freq = valleyview_rps_rpe_freq(dev_priv); DRM_DEBUG_DRIVER("RPe GPU freq: %d MHz (%u)\n", vlv_gpu_freq(dev_priv, dev_priv->rps.efficient_freq), dev_priv->rps.efficient_freq); - hw_min = valleyview_rps_min_freq(dev_priv); + dev_priv->rps.min_freq = valleyview_rps_min_freq(dev_priv); DRM_DEBUG_DRIVER("min GPU freq: %d MHz (%u)\n", - vlv_gpu_freq(dev_priv, hw_min), - hw_min); + vlv_gpu_freq(dev_priv, dev_priv->rps.min_freq), + dev_priv->rps.min_freq); /* Preserve min/max settings in case of re-init */ if (dev_priv->rps.max_freq_softlimit == 0) - dev_priv->rps.max_freq_softlimit = hw_max; + dev_priv->rps.max_freq_softlimit = dev_priv->rps.max_freq; if (dev_priv->rps.min_freq_softlimit == 0) - dev_priv->rps.min_freq_softlimit = hw_min; + dev_priv->rps.min_freq_softlimit = dev_priv->rps.min_freq; DRM_DEBUG_DRIVER("setting GPU freq to %d MHz (%u)\n", vlv_gpu_freq(dev_priv, dev_priv->rps.efficient_freq),