OMAPDSS: DPI: Add ops

Add "ops" style method for using DPI functionality.

Ops style calls will allow us to have arbitrarily long display
pipelines, where each entity can call ops in the previous display
entity.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 70 insertions, 0 deletions

diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c
index 5351d02e3064..6433eab6bcf2 100644
--- a/drivers/video/omap2/dss/dpi.c
+++ b/drivers/video/omap2/dss/dpi.c
@@ -461,6 +461,16 @@ void omapdss_dpi_set_timings(struct omap_dss_device *dssdev,
 }
 EXPORT_SYMBOL(omapdss_dpi_set_timings);
 
+static void dpi_get_timings(struct omap_dss_device *dssdev,
+		struct omap_video_timings *timings)
+{
+	mutex_lock(&dpi.lock);
+
+	*timings = dpi.timings;
+
+	mutex_unlock(&dpi.lock);
+}
+
 int dpi_check_timings(struct omap_dss_device *dssdev,
 			struct omap_video_timings *timings)
 {
@@ -678,6 +688,65 @@ static int dpi_probe_pdata(struct platform_device *dpidev)
 	return 0;
 }
 
+static int dpi_connect(struct omap_dss_device *dssdev,
+		struct omap_dss_device *dst)
+{
+	struct omap_overlay_manager *mgr;
+	int r;
+
+	r = dpi_init_regulator();
+	if (r)
+		return r;
+
+	dpi_init_pll();
+
+	mgr = omap_dss_get_overlay_manager(dssdev->dispc_channel);
+	if (!mgr)
+		return -ENODEV;
+
+	r = dss_mgr_connect(mgr, dssdev);
+	if (r)
+		return r;
+
+	r = omapdss_output_set_device(dssdev, dst);
+	if (r) {
+		DSSERR("failed to connect output to new device: %s\n",
+				dst->name);
+		dss_mgr_disconnect(mgr, dssdev);
+		return r;
+	}
+
+	return 0;
+}
+
+static void dpi_disconnect(struct omap_dss_device *dssdev,
+		struct omap_dss_device *dst)
+{
+	WARN_ON(dst != dssdev->device);
+
+	if (dst != dssdev->device)
+		return;
+
+	omapdss_output_unset_device(dssdev);
+
+	if (dssdev->manager)
+		dss_mgr_disconnect(dssdev->manager, dssdev);
+}
+
+static const struct omapdss_dpi_ops dpi_ops = {
+	.connect = dpi_connect,
+	.disconnect = dpi_disconnect,
+
+	.enable = omapdss_dpi_display_enable,
+	.disable = omapdss_dpi_display_disable,
+
+	.check_timings = dpi_check_timings,
+	.set_timings = omapdss_dpi_set_timings,
+	.get_timings = dpi_get_timings,
+
+	.set_data_lines = omapdss_dpi_set_data_lines,
+};
+
 static void dpi_init_output(struct platform_device *pdev)
 {
 	struct omap_dss_device *out = &dpi.output;
@@ -687,6 +756,7 @@ static void dpi_init_output(struct platform_device *pdev)
 	out->output_type = OMAP_DISPLAY_TYPE_DPI;
 	out->name = "dpi.0";
 	out->dispc_channel = dpi_get_channel();
+	out->ops.dpi = &dpi_ops;
 	out->owner = THIS_MODULE;
 
 	omapdss_register_output(out);