[PATCH 1/2] video: Add skeleton driver for ZynqMP Display port driver

[Michal Simek]

The reason for this driver is to use call power management driver to enable
it in PMUFW. There is missing functionality now but should be added in
near future.

Signed-off-by: Michal Simek <michal.simek at xilinx.com>
---

 drivers/video/Kconfig        |  8 +++++
 drivers/video/Makefile       |  1 +
 drivers/video/zynqmp_dpsub.c | 66 ++++++++++++++++++++++++++++++++++++
 3 files changed, 75 insertions(+)
 create mode 100644 drivers/video/zynqmp_dpsub.c

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index ff8e11f6489d..646fec70262c 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -680,6 +680,14 @@ config VIDEO_SEPS525
 	  Enable support for the Syncoam PM-OLED display driver (RGB 160x128).
 	  Currently driver is supporting only SPI interface.
 
+config VIDEO_ZYNQMP_DPSUB
+	bool "Enable video support for ZynqMP Display Port"
+	depends on DM_VIDEO && ZYNQMP_POWER_DOMAIN
+	help
+	  Enable support for Xilinx ZynqMP Display Port. Currently this file
+	  is used as placeholder for driver. The main reason is to record
+	  compatible string and calling power domain driver.
+
 source "drivers/video/nexell/Kconfig"
 
 config VIDEO
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 4038395b1289..2530791eb43a 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -74,6 +74,7 @@ obj-$(CONFIG_VIDEO_TEGRA20) += tegra.o
 obj-$(CONFIG_VIDEO_VCXK) += bus_vcxk.o
 obj-$(CONFIG_VIDEO_VESA) += vesa.o
 obj-$(CONFIG_VIDEO_SEPS525) += seps525.o
+obj-$(CONFIG_VIDEO_ZYNQMP_DPSUB) += zynqmp_dpsub.o
 
 obj-y += bridge/
 obj-y += sunxi/
diff --git a/drivers/video/zynqmp_dpsub.c b/drivers/video/zynqmp_dpsub.c
new file mode 100644
index 000000000000..4ead663cd59f
--- /dev/null
+++ b/drivers/video/zynqmp_dpsub.c
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 Xilinx Inc.
+ */
+
+#include <common.h>
+#include <cpu_func.h>
+#include <dm.h>
+#include <errno.h>
+#include <video.h>
+#include <dm/device_compat.h>
+
+#define WIDTH	640
+#define HEIGHT	480
+
+/**
+ * struct zynqmp_dpsub_priv - Private structure
+ * @dev: Device uclass for video_ops
+ */
+struct zynqmp_dpsub_priv {
+	struct udevice *dev;
+};
+
+static int zynqmp_dpsub_probe(struct udevice *dev)
+{
+	struct video_priv *uc_priv = dev_get_uclass_priv(dev);
+	struct zynqmp_dpsub_priv *priv = dev_get_priv(dev);
+
+	uc_priv->bpix = VIDEO_BPP16;
+	uc_priv->xsize = WIDTH;
+	uc_priv->ysize = HEIGHT;
+	uc_priv->rot = 0;
+
+	priv->dev = dev;
+
+	/* Only placeholder for power domain driver */
+	return 0;
+}
+
+static int zynqmp_dpsub_bind(struct udevice *dev)
+{
+	struct video_uc_plat *plat = dev_get_uclass_plat(dev);
+
+	plat->size = WIDTH * HEIGHT * 16;
+
+	return 0;
+}
+
+static const struct video_ops zynqmp_dpsub_ops = {
+};
+
+static const struct udevice_id zynqmp_dpsub_ids[] = {
+	{ .compatible = "xlnx,zynqmp-dpsub-1.7" },
+	{ }
+};
+
+U_BOOT_DRIVER(zynqmp_dpsub_video) = {
+	.name = "zynqmp_dpsub_video",
+	.id = UCLASS_VIDEO,
+	.of_match = zynqmp_dpsub_ids,
+	.ops = &zynqmp_dpsub_ops,
+	.plat_auto = sizeof(struct video_uc_plat),
+	.bind = zynqmp_dpsub_bind,
+	.probe = zynqmp_dpsub_probe,
+	.priv_auto = sizeof(struct zynqmp_dpsub_priv),
+};
-- 
2.35.1