OMAPDSS: HDMI: Implement DSS driver interface for audio
Implement the DSS device driver audio support interface in the HDMI
panel driver and generic driver. The implementation relies on the
IP-specific functions that are defined at DSS probe time.
A mixed locking strategy is used. The panel's mutex is used when
the state of the panel is queried as required by the audio functions.
The audio state is protected using a spinlock as users of DSS HDMI
audio functionality might start/stop audio while holding a spinlock.
The mutex and the spinlock are held and released as needed by each
individual function to protect the panel state and the audio state.
Although the panel's audio_start functions does not check whether
the panel is active, the audio _ENABLED state can be reached only
from audio_enable, which does check the state of the panel. Also,
if the panel is ever disabled, the audio state will transition
to _DISABLED. Transitions are always protected by the audio lock.
Signed-off-by: Ricardo Neri <ricardo.neri@ti.com>
diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c
index 09fdbf8..8195c71 100644
--- a/drivers/video/omap2/dss/hdmi.c
+++ b/drivers/video/omap2/dss/hdmi.c
@@ -654,6 +654,48 @@
return 0;
}
+
+int hdmi_audio_enable(void)
+{
+ DSSDBG("audio_enable\n");
+
+ return hdmi.ip_data.ops->audio_enable(&hdmi.ip_data);
+}
+
+void hdmi_audio_disable(void)
+{
+ DSSDBG("audio_disable\n");
+
+ hdmi.ip_data.ops->audio_disable(&hdmi.ip_data);
+}
+
+int hdmi_audio_start(void)
+{
+ DSSDBG("audio_start\n");
+
+ return hdmi.ip_data.ops->audio_start(&hdmi.ip_data);
+}
+
+void hdmi_audio_stop(void)
+{
+ DSSDBG("audio_stop\n");
+
+ hdmi.ip_data.ops->audio_stop(&hdmi.ip_data);
+}
+
+bool hdmi_mode_has_audio(void)
+{
+ if (hdmi.ip_data.cfg.cm.mode == HDMI_HDMI)
+ return true;
+ else
+ return false;
+}
+
+int hdmi_audio_config(struct omap_dss_audio *audio)
+{
+ return hdmi.ip_data.ops->audio_config(&hdmi.ip_data, audio);
+}
+
#endif
static void __init hdmi_probe_pdata(struct platform_device *pdev)