drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c

Source file repositories/reference/linux-study-clean/drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c

File Facts

System
Linux kernel
Corpus path
drivers/video/fbdev/omap2/omapfb/dss/hdmi5.c
Extension
.c
Size
17474 bytes
Lines
855
Domain
Driver Families
Bucket
drivers/video
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

if (r) {
			DSSERR("Error restoring audio configuration: %d", r);
			hdmi.audio_abort_cb(&hdmi.pdev->dev);
			hdmi.audio_configured = false;
		}
	}

	spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
	if (hdmi.audio_configured && hdmi.audio_playing)
		hdmi_start_audio_stream(&hdmi);
	hdmi.display_enabled = true;
	spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);

	mutex_unlock(&hdmi.lock);
	return 0;

err0:
	mutex_unlock(&hdmi.lock);
	return r;
}

static void hdmi_display_disable(struct omap_dss_device *dssdev)
{
	unsigned long flags;

	DSSDBG("Enter hdmi_display_disable\n");

	mutex_lock(&hdmi.lock);

	spin_lock_irqsave(&hdmi.audio_playing_lock, flags);
	hdmi_stop_audio_stream(&hdmi);
	hdmi.display_enabled = false;
	spin_unlock_irqrestore(&hdmi.audio_playing_lock, flags);

	hdmi_power_off_full(dssdev);

	mutex_unlock(&hdmi.lock);
}

static int hdmi_core_enable(struct omap_dss_device *dssdev)
{
	int r = 0;

	DSSDBG("ENTER omapdss_hdmi_core_enable\n");

	mutex_lock(&hdmi.lock);

	r = hdmi_power_on_core(dssdev);
	if (r) {
		DSSERR("failed to power on device\n");
		goto err0;
	}

	mutex_unlock(&hdmi.lock);
	return 0;

err0:
	mutex_unlock(&hdmi.lock);
	return r;
}

static void hdmi_core_disable(struct omap_dss_device *dssdev)
{
	DSSDBG("Enter omapdss_hdmi_core_disable\n");

	mutex_lock(&hdmi.lock);

	hdmi_power_off_core(dssdev);

	mutex_unlock(&hdmi.lock);
}

static int hdmi_connect(struct omap_dss_device *dssdev,
		struct omap_dss_device *dst)
{
	struct omap_overlay_manager *mgr;
	int r;

	r = hdmi_init_regulator();
	if (r)
		return r;

	mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
	if (!mgr)
		return -ENODEV;

	r = dss_mgr_connect(mgr, dssdev);
	if (r)
		return r;

Annotation

Implementation Notes