From 58abf1daae8264e5adc90733dcabeb48a8245439 Mon Sep 17 00:00:00 2001 From: Rodrigo Vivi Date: Tue, 7 Oct 2014 07:06:50 -0700 Subject: [PATCH] drm/i915: Do not export RC6p and RC6pp if they don't exist Avoid to expose RC6 and RC6pp to the platforms that doesn't support it. So powertop can be changed to show RC6p and RC6pp only on the platforms they are available. v2: Simplify by merging RC6p and RC6pp groups and respect the spec that mentions deep and deepest RC6 on SNB and IVB although they keep disabled by default. v3: Remove unecessary space. v4: RC6p and RC6pp is only for SNB and IVB; unify debug msg and use has_rc6p() on sanitize options instead of is gen 6 and ivb. v5: yet another fix on has_rc6p macro. final is_gen6 or is_ivb! To make sure we are excluding hsw and baytrail. References: https://bugs.freedesktop.org/show_bug.cgi?id=84524 Cc: Josh Triplett Cc: Paulo Zanoni Cc: Daniel Vetter Signed-off-by: Rodrigo Vivi Reviewed-by: Paulo Zanoni Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_drv.h | 2 ++ drivers/gpu/drm/i915/i915_sysfs.c | 22 +++++++++++++++++++--- drivers/gpu/drm/i915/intel_pm.c | 15 ++++++++++----- 3 files changed, 31 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 1e476b5d9106..ac6232bc1341 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -2184,6 +2184,8 @@ struct drm_i915_cmd_table { #define HAS_PSR(dev) (IS_HASWELL(dev) || IS_BROADWELL(dev)) #define HAS_RUNTIME_PM(dev) (IS_GEN6(dev) || IS_HASWELL(dev) || \ IS_BROADWELL(dev) || IS_VALLEYVIEW(dev)) +#define HAS_RC6(dev) (INTEL_INFO(dev)->gen >= 6) +#define HAS_RC6p(dev) (INTEL_INFO(dev)->gen == 6 || IS_IVYBRIDGE(dev)) #define INTEL_PCH_DEVICE_ID_MASK 0xff00 #define INTEL_PCH_IBX_DEVICE_ID_TYPE 0x3b00 diff --git a/drivers/gpu/drm/i915/i915_sysfs.c b/drivers/gpu/drm/i915/i915_sysfs.c index 503847f18fdd..4a5af695307e 100644 --- a/drivers/gpu/drm/i915/i915_sysfs.c +++ b/drivers/gpu/drm/i915/i915_sysfs.c @@ -139,8 +139,6 @@ static DEVICE_ATTR(rc6pp_residency_ms, S_IRUGO, show_rc6pp_ms, NULL); static struct attribute *rc6_attrs[] = { &dev_attr_rc6_enable.attr, &dev_attr_rc6_residency_ms.attr, - &dev_attr_rc6p_residency_ms.attr, - &dev_attr_rc6pp_residency_ms.attr, NULL }; @@ -148,6 +146,17 @@ static struct attribute_group rc6_attr_group = { .name = power_group_name, .attrs = rc6_attrs }; + +static struct attribute *rc6p_attrs[] = { + &dev_attr_rc6p_residency_ms.attr, + &dev_attr_rc6pp_residency_ms.attr, + NULL +}; + +static struct attribute_group rc6p_attr_group = { + .name = power_group_name, + .attrs = rc6p_attrs +}; #endif static int l3_access_valid(struct drm_device *dev, loff_t offset) @@ -595,12 +604,18 @@ void i915_setup_sysfs(struct drm_device *dev) int ret; #ifdef CONFIG_PM - if (INTEL_INFO(dev)->gen >= 6) { + if (HAS_RC6(dev)) { ret = sysfs_merge_group(&dev->primary->kdev->kobj, &rc6_attr_group); if (ret) DRM_ERROR("RC6 residency sysfs setup failed\n"); } + if (HAS_RC6p(dev)) { + ret = sysfs_merge_group(&dev->primary->kdev->kobj, + &rc6p_attr_group); + if (ret) + DRM_ERROR("RC6p residency sysfs setup failed\n"); + } #endif if (HAS_L3_DPF(dev)) { ret = device_create_bin_file(dev->primary->kdev, &dpf_attrs); @@ -640,5 +655,6 @@ void i915_teardown_sysfs(struct drm_device *dev) device_remove_bin_file(dev->primary->kdev, &dpf_attrs); #ifdef CONFIG_PM sysfs_unmerge_group(&dev->primary->kdev->kobj, &rc6_attr_group); + sysfs_unmerge_group(&dev->primary->kdev->kobj, &rc6p_attr_group); #endif } diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index a14be5d56c6b..daa99e7e805b 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -3629,10 +3629,15 @@ static void intel_print_rc6_info(struct drm_device *dev, u32 mode) else mode = 0; } - DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s, RC6p %s, RC6pp %s\n", - (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off", - (mode & GEN6_RC_CTL_RC6p_ENABLE) ? "on" : "off", - (mode & GEN6_RC_CTL_RC6pp_ENABLE) ? "on" : "off"); + if (HAS_RC6p(dev)) + DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s RC6p %s RC6pp %s\n", + (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off", + (mode & GEN6_RC_CTL_RC6p_ENABLE) ? "on" : "off", + (mode & GEN6_RC_CTL_RC6pp_ENABLE) ? "on" : "off"); + + else + DRM_DEBUG_KMS("Enabling RC6 states: RC6 %s\n", + (mode & GEN6_RC_CTL_RC6_ENABLE) ? "on" : "off"); } static int sanitize_rc6_option(const struct drm_device *dev, int enable_rc6) @@ -3649,7 +3654,7 @@ static int sanitize_rc6_option(const struct drm_device *dev, int enable_rc6) if (enable_rc6 >= 0) { int mask; - if (INTEL_INFO(dev)->gen == 6 || IS_IVYBRIDGE(dev)) + if (HAS_RC6p(dev)) mask = INTEL_RC6_ENABLE | INTEL_RC6p_ENABLE | INTEL_RC6pp_ENABLE; else -- 2.34.1