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Subject[PATCH 04/10] drm/sun4i: Add support for A10 display pipeline components
Date
The A10 display pipeline has 2 frontends, 2 backends, and 2 TCONs.
This patch adds support (or a compatible string in the frontend's
case) for these components.

The TCONs support directly outputting to CPU/RGB/LVDS LCD panels,
or it can output to HDMI via an on-chip HDMI controller, or
CVBS/YPbPr/VGA signals via on-chip TV encoders. These additional
encoders are not covered in this patch.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt | 3 +++
drivers/gpu/drm/sun4i/sun4i_backend.c | 8 ++++++++
drivers/gpu/drm/sun4i/sun4i_drv.c | 4 +++-
3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
index 5650efcfd2ac..8f9a58181f89 100644
--- a/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
+++ b/Documentation/devicetree/bindings/display/sunxi/sun4i-drm.txt
@@ -155,6 +155,7 @@ system.

Required properties:
- compatible: value must be one of:
+ * allwinner,sun4i-a10-display-backend
* allwinner,sun5i-a13-display-backend
* allwinner,sun6i-a31-display-backend
* allwinner,sun8i-a33-display-backend
@@ -187,6 +188,7 @@ deinterlacing and color space conversion.

Required properties:
- compatible: value must be one of:
+ * allwinner,sun4i-a10-display-frontend
* allwinner,sun5i-a13-display-frontend
* allwinner,sun6i-a31-display-frontend
* allwinner,sun8i-a33-display-frontend
@@ -233,6 +235,7 @@ extra node.

Required properties:
- compatible: value must be one of:
+ * allwinner,sun4i-a10-display-engine
* allwinner,sun5i-a10s-display-engine
* allwinner,sun5i-a13-display-engine
* allwinner,sun6i-a31-display-engine
diff --git a/drivers/gpu/drm/sun4i/sun4i_backend.c b/drivers/gpu/drm/sun4i/sun4i_backend.c
index e8477321f978..77f9e183df00 100644
--- a/drivers/gpu/drm/sun4i/sun4i_backend.c
+++ b/drivers/gpu/drm/sun4i/sun4i_backend.c
@@ -514,6 +514,10 @@ static int sun4i_backend_remove(struct platform_device *pdev)
return 0;
}

+static const struct sun4i_backend_quirks sun4i_backend_quirks = {
+ .needs_output_muxing = true,
+};
+
static const struct sun4i_backend_quirks sun5i_backend_quirks = {
};

@@ -524,6 +528,10 @@ static const struct sun4i_backend_quirks sun8i_a33_backend_quirks = {
};

static const struct of_device_id sun4i_backend_of_table[] = {
+ {
+ .compatible = "allwinner,sun4i-a10-display-backend",
+ .data = &sun4i_backend_quirks,
+ },
{
.compatible = "allwinner,sun5i-a13-display-backend",
.data = &sun5i_backend_quirks,
diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index b8089ac6feef..5dbaf8bb414d 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -177,7 +177,8 @@ static bool sun4i_drv_node_is_connector(struct device_node *node)

static bool sun4i_drv_node_is_frontend(struct device_node *node)
{
- return of_device_is_compatible(node, "allwinner,sun5i-a13-display-frontend") ||
+ return of_device_is_compatible(node, "allwinner,sun4i-a10-display-frontend") ||
+ 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,sun8i-a33-display-frontend");
}
@@ -388,6 +389,7 @@ static int sun4i_drv_remove(struct platform_device *pdev)
}

static const struct of_device_id sun4i_drv_of_table[] = {
+ { .compatible = "allwinner,sun4i-a10-display-engine" },
{ .compatible = "allwinner,sun5i-a10s-display-engine" },
{ .compatible = "allwinner,sun5i-a13-display-engine" },
{ .compatible = "allwinner,sun6i-a31-display-engine" },
--
2.14.2
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