drivers/video/fbdev/omap2/omapfb/displays/panel-dpi.c

Source file repositories/reference/linux-study-clean/drivers/video/fbdev/omap2/omapfb/displays/panel-dpi.c

File Facts

System
Linux kernel
Corpus path
drivers/video/fbdev/omap2/omapfb/displays/panel-dpi.c
Extension
.c
Size
5697 bytes
Lines
249
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

struct panel_drv_data {
	struct omap_dss_device dssdev;
	struct omap_dss_device *in;

	int data_lines;

	struct omap_video_timings videomode;

	struct gpio_desc *enable_gpio;
};

#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev)

static int panel_dpi_connect(struct omap_dss_device *dssdev)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	if (omapdss_device_is_connected(dssdev))
		return 0;

	return in->ops.dpi->connect(in, dssdev);
}

static void panel_dpi_disconnect(struct omap_dss_device *dssdev)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	if (!omapdss_device_is_connected(dssdev))
		return;

	in->ops.dpi->disconnect(in, dssdev);
}

static int panel_dpi_enable(struct omap_dss_device *dssdev)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;
	int r;

	if (!omapdss_device_is_connected(dssdev))
		return -ENODEV;

	if (omapdss_device_is_enabled(dssdev))
		return 0;

	if (ddata->data_lines)
		in->ops.dpi->set_data_lines(in, ddata->data_lines);
	in->ops.dpi->set_timings(in, &ddata->videomode);

	r = in->ops.dpi->enable(in);
	if (r)
		return r;

	gpiod_set_value_cansleep(ddata->enable_gpio, 1);

	dssdev->state = OMAP_DSS_DISPLAY_ACTIVE;

	return 0;
}

static void panel_dpi_disable(struct omap_dss_device *dssdev)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	if (!omapdss_device_is_enabled(dssdev))
		return;

	gpiod_set_value_cansleep(ddata->enable_gpio, 0);

	in->ops.dpi->disable(in);

	dssdev->state = OMAP_DSS_DISPLAY_DISABLED;
}

static void panel_dpi_set_timings(struct omap_dss_device *dssdev,
		struct omap_video_timings *timings)
{
	struct panel_drv_data *ddata = to_panel_data(dssdev);
	struct omap_dss_device *in = ddata->in;

	ddata->videomode = *timings;
	dssdev->panel.timings = *timings;

	in->ops.dpi->set_timings(in, timings);
}

static void panel_dpi_get_timings(struct omap_dss_device *dssdev,

Annotation

Implementation Notes