drm/sun4i: Add support for A23 display pipeline

The A23's display pipeline is similar to the A33. Differences include:

  - Display backend supports larger layers, 8192x8192 instead of 2048x2048

  - TCON has DMA input

  - There is no SAT module packed in the display backend

Add support for the display pipeline and its components.

As the MIPI DSI output device is not officially documented, and there
are no A23 reference devices to test it, it is not covered by this
patch.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190125032314.20915-7-wens@csie.org

drivers/gpu/drm/sun4i/sun4i_backend.c

@@ -1011,6 +1011,10 @@ static const struct of_device_id sun4i_backend_of_table[] = {
 		.compatible = "allwinner,sun7i-a20-display-backend",
 		.data = &sun7i_backend_quirks,
 	},
+	{
+		.compatible = "allwinner,sun8i-a23-display-backend",
+		.data = &sun8i_a33_backend_quirks,
+	},
 	{
 		.compatible = "allwinner,sun8i-a33-display-backend",
 		.data = &sun8i_a33_backend_quirks,

drivers/gpu/drm/sun4i/sun4i_drv.c

@@ -165,6 +165,7 @@ static bool sun4i_drv_node_is_frontend(struct device_node *node)
 		of_device_is_compatible(node, "allwinner,sun5i-a13-display-frontend") ||
 		of_device_is_compatible(node, "allwinner,sun6i-a31-display-frontend") ||
 		of_device_is_compatible(node, "allwinner,sun7i-a20-display-frontend") ||
+		of_device_is_compatible(node, "allwinner,sun8i-a23-display-frontend") ||
 		of_device_is_compatible(node, "allwinner,sun8i-a33-display-frontend") ||
 		of_device_is_compatible(node, "allwinner,sun9i-a80-display-frontend");
 }
@@ -404,6 +405,7 @@ static const struct of_device_id sun4i_drv_of_table[] = {
 	{ .compatible = "allwinner,sun6i-a31-display-engine" },
 	{ .compatible = "allwinner,sun6i-a31s-display-engine" },
 	{ .compatible = "allwinner,sun7i-a20-display-engine" },
+	{ .compatible = "allwinner,sun8i-a23-display-engine" },
 	{ .compatible = "allwinner,sun8i-a33-display-engine" },
 	{ .compatible = "allwinner,sun8i-a83t-display-engine" },
 	{ .compatible = "allwinner,sun8i-h3-display-engine" },

drivers/gpu/drm/sun4i/sun4i_frontend.c

@@ -719,6 +719,10 @@ const struct of_device_id sun4i_frontend_of_table[] = {
 		.compatible = "allwinner,sun7i-a20-display-frontend",
 		.data = &sun4i_a10_frontend
 	},
+	{
+		.compatible = "allwinner,sun8i-a23-display-frontend",
+		.data = &sun8i_a33_frontend
+	},
 	{
 		.compatible = "allwinner,sun8i-a33-display-frontend",
 		.data = &sun8i_a33_frontend

drivers/gpu/drm/sun4i/sun4i_tcon.c

@@ -1494,6 +1494,7 @@ const struct of_device_id sun4i_tcon_of_table[] = {
 	{ .compatible = "allwinner,sun6i-a31-tcon", .data = &sun6i_a31_quirks },
 	{ .compatible = "allwinner,sun6i-a31s-tcon", .data = &sun6i_a31s_quirks },
 	{ .compatible = "allwinner,sun7i-a20-tcon", .data = &sun7i_a20_quirks },
+	{ .compatible = "allwinner,sun8i-a23-tcon", .data = &sun8i_a33_quirks },
 	{ .compatible = "allwinner,sun8i-a33-tcon", .data = &sun8i_a33_quirks },
 	{ .compatible = "allwinner,sun8i-a83t-tcon-lcd", .data = &sun8i_a83t_lcd_quirks },
 	{ .compatible = "allwinner,sun8i-a83t-tcon-tv", .data = &sun8i_a83t_tv_quirks },

drivers/gpu/drm/sun4i/sun6i_drc.c

@@ -101,6 +101,7 @@ static int sun6i_drc_remove(struct platform_device *pdev)
 static const struct of_device_id sun6i_drc_of_table[] = {
 	{ .compatible = "allwinner,sun6i-a31-drc" },
 	{ .compatible = "allwinner,sun6i-a31s-drc" },
+	{ .compatible = "allwinner,sun8i-a23-drc" },
 	{ .compatible = "allwinner,sun8i-a33-drc" },
 	{ .compatible = "allwinner,sun9i-a80-drc" },
 	{ }