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author | Jerome Anand <jerome.anand@intel.com> | 2017-01-25 04:27:50 +0530 |
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committer | Takashi Iwai <tiwai@suse.de> | 2017-01-25 14:23:12 +0100 |
commit | 46d196ec460b9c45ca225f815c0b05f9de67290d (patch) | |
tree | ac8e6af89a00188d175c8253b6a3d4bc13061ef9 /drivers/gpu/drm/i915/intel_lpe_audio.c | |
parent | eef57324d926f0d8c7a40069e7d26e0cb0651b47 (diff) | |
download | linux-stable-46d196ec460b9c45ca225f815c0b05f9de67290d.tar.gz linux-stable-46d196ec460b9c45ca225f815c0b05f9de67290d.tar.bz2 linux-stable-46d196ec460b9c45ca225f815c0b05f9de67290d.zip |
drm/i915: Add support for audio driver notifications
Notifiations like mode change, hot plug and edid to
the audio driver are added. This is inturn used by the
audio driver for its functionality.
A new interface file capturing the notifications needed by the
audio driver is added
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Jerome Anand <jerome.anand@intel.com>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/gpu/drm/i915/intel_lpe_audio.c')
-rw-r--r-- | drivers/gpu/drm/i915/intel_lpe_audio.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_lpe_audio.c b/drivers/gpu/drm/i915/intel_lpe_audio.c index 7ce1b5b99275..27d94255872d 100644 --- a/drivers/gpu/drm/i915/intel_lpe_audio.c +++ b/drivers/gpu/drm/i915/intel_lpe_audio.c @@ -319,3 +319,52 @@ void intel_lpe_audio_teardown(struct drm_i915_private *dev_priv) irq_free_desc(dev_priv->lpe_audio.irq); } + + +/** + * intel_lpe_audio_notify() - notify lpe audio event + * audio driver and i915 + * @dev_priv: the i915 drm device private data + * @eld : ELD data + * @port: port id + * @tmds_clk_speed: tmds clock frequency in Hz + * + * Notify lpe audio driver of eld change. + */ +void intel_lpe_audio_notify(struct drm_i915_private *dev_priv, + void *eld, int port, int tmds_clk_speed) +{ + unsigned long irq_flags; + struct intel_hdmi_lpe_audio_pdata *pdata = NULL; + + if (!HAS_LPE_AUDIO(dev_priv)) + return; + + pdata = dev_get_platdata( + &(dev_priv->lpe_audio.platdev->dev)); + + spin_lock_irqsave(&pdata->lpe_audio_slock, irq_flags); + + if (eld != NULL) { + memcpy(pdata->eld.eld_data, eld, + HDMI_MAX_ELD_BYTES); + pdata->eld.port_id = port; + pdata->hdmi_connected = true; + + if (tmds_clk_speed) + pdata->tmds_clock_speed = tmds_clk_speed; + } else { + memset(pdata->eld.eld_data, 0, + HDMI_MAX_ELD_BYTES); + pdata->hdmi_connected = false; + } + + if (pdata->notify_audio_lpe) + pdata->notify_audio_lpe( + (eld != NULL) ? &pdata->eld : NULL); + else + pdata->notify_pending = true; + + spin_unlock_irqrestore(&pdata->lpe_audio_slock, + irq_flags); +} |