diff options
| author | Paulo Zanoni | 2014-07-04 16:27:38 +0200 |
|---|---|---|
| committer | Daniel Vetter | 2014-07-10 22:12:37 +0200 |
| commit | bd2bb1b9a1c8b8f7b673db22d628ffd491669deb (patch) | |
| tree | 43ba68484caf27b4c34bc4e73470cce779cab73f | |
| parent | drm/i915: Document that the pll->mode_set hook is optional (diff) | |
| download | kernel-qcow2-linux-bd2bb1b9a1c8b8f7b673db22d628ffd491669deb.tar.gz kernel-qcow2-linux-bd2bb1b9a1c8b8f7b673db22d628ffd491669deb.tar.xz kernel-qcow2-linux-bd2bb1b9a1c8b8f7b673db22d628ffd491669deb.zip | |
drm/i915: add POWER_DOMAIN_PLLS
And get/put it when needed. The special thing about this commit is
that it will now return false in ibx_pch_dpll_get_hw_state() in case
the power domain is not enabled. This will fix some WARNs we have when
we run pm_rpm on SNB.
Testcase: igt/pm_rpm
Bugzilla:https://bugs.freedesktop.org/show_bug.cgi?id=80463
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
| -rw-r--r-- | drivers/gpu/drm/i915/i915_debugfs.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_pm.c | 1 |
4 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index f22a81dba64a..2effe1a37815 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -2043,6 +2043,8 @@ static const char *power_domain_str(enum intel_display_power_domain domain) return "VGA"; case POWER_DOMAIN_AUDIO: return "AUDIO"; + case POWER_DOMAIN_PLLS: + return "PLLS"; case POWER_DOMAIN_INIT: return "INIT"; default: diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 26982d12039f..479a9aa77ee3 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -129,6 +129,7 @@ enum intel_display_power_domain { POWER_DOMAIN_PORT_OTHER, POWER_DOMAIN_VGA, POWER_DOMAIN_AUDIO, + POWER_DOMAIN_PLLS, POWER_DOMAIN_INIT, POWER_DOMAIN_NUM, diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 0874f3589722..d61c5e43fc19 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1814,6 +1814,8 @@ static void intel_enable_shared_dpll(struct intel_crtc *crtc) } WARN_ON(pll->on); + intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS); + DRM_DEBUG_KMS("enabling %s\n", pll->name); pll->enable(dev_priv, pll); pll->on = true; @@ -1850,6 +1852,8 @@ static void intel_disable_shared_dpll(struct intel_crtc *crtc) DRM_DEBUG_KMS("disabling %s\n", pll->name); pll->disable(dev_priv, pll); pll->on = false; + + intel_display_power_put(dev_priv, POWER_DOMAIN_PLLS); } static void ironlake_enable_pch_transcoder(struct drm_i915_private *dev_priv, @@ -11302,6 +11306,9 @@ static bool ibx_pch_dpll_get_hw_state(struct drm_i915_private *dev_priv, { uint32_t val; + if (!intel_display_power_enabled(dev_priv, POWER_DOMAIN_PLLS)) + return false; + val = I915_READ(PCH_DPLL(pll->id)); hw_state->dpll = val; hw_state->fp0 = I915_READ(PCH_FP0(pll->id)); @@ -12867,6 +12874,9 @@ static void intel_modeset_readout_hw_state(struct drm_device *dev) DRM_DEBUG_KMS("%s hw state readout: refcount %i, on %i\n", pll->name, pll->refcount, pll->on); + + if (pll->refcount) + intel_display_power_get(dev_priv, POWER_DOMAIN_PLLS); } list_for_each_entry(encoder, &dev->mode_config.encoder_list, diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c index 19c5c26badae..55228df5cf23 100644 --- a/drivers/gpu/drm/i915/intel_pm.c +++ b/drivers/gpu/drm/i915/intel_pm.c @@ -6346,6 +6346,7 @@ EXPORT_SYMBOL_GPL(i915_get_cdclk_freq); BIT(POWER_DOMAIN_PORT_DDI_D_2_LANES) | \ BIT(POWER_DOMAIN_PORT_DDI_D_4_LANES) | \ BIT(POWER_DOMAIN_PORT_CRT) | \ + BIT(POWER_DOMAIN_PLLS) | \ BIT(POWER_DOMAIN_INIT)) #define HSW_DISPLAY_POWER_DOMAINS ( \ (POWER_DOMAIN_MASK & ~HSW_ALWAYS_ON_POWER_DOMAINS) | \ |