aboutsummaryrefslogtreecommitdiffstats
path: root/drivers
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2014-07-04 08:56:57 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-07-04 08:56:57 -0700
commit88b5a850c88a3fd0e9d050d35962259e029e43f4 (patch)
tree6e37e46376110e23dfc1f08cd2f629c0677ec9b3 /drivers
parentb82207b8e8bffae5b2df8c054a35b0994cbb9896 (diff)
parente4d9e513dedb5ac4e166c1053314fa935ddecc8c (diff)
Merge tag 'sound-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai: "This contains a few fixes for HD-audio: yet another Dell headset pin quirk, a fixup for Thinkpad T540P, and an improved fix for Haswell/Broadwell HDMI clock setup" * tag 'sound-3.16-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - restore BCLK M/N value as per CDCLK for HSW/BDW display HDA controller drm/i915: provide interface for audio driver to query cdclk ALSA: hda - Add a fixup for Thinkpad T540p ALSA: hda - Add another headset pin quirk for some Dell machines
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/i915/intel_pm.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 9ad0c6afc487..61cb90e729a6 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -6038,6 +6038,27 @@ int i915_release_power_well(void)
}
EXPORT_SYMBOL_GPL(i915_release_power_well);
+/*
+ * Private interface for the audio driver to get CDCLK in kHz.
+ *
+ * Caller must request power well using i915_request_power_well() prior to
+ * making the call.
+ */
+int i915_get_cdclk_freq(void)
+{
+ struct drm_i915_private *dev_priv;
+
+ if (!hsw_pwr)
+ return -ENODEV;
+
+ dev_priv = container_of(hsw_pwr, struct drm_i915_private,
+ power_domains);
+
+ return intel_ddi_get_cdclk_freq(dev_priv);
+}
+EXPORT_SYMBOL_GPL(i915_get_cdclk_freq);
+
+
#define POWER_DOMAIN_MASK (BIT(POWER_DOMAIN_NUM) - 1)
#define HSW_ALWAYS_ON_POWER_DOMAINS ( \

Privacy Policy