From: Michal Simek <michal.simek@xilinx.com>
Date: Wed, 23 Feb 2022 14:52:02 +0000 (+0100)
Subject: video: Add skeleton driver for ZynqMP Display port driver
X-Git-Url: http://git.dujemihanovic.xyz/login.html?a=commitdiff_plain;h=98cacab76542dba7fa7d42e32fc848d89d88d55a;p=u-boot.git

video: Add skeleton driver for ZynqMP Display port driver

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@xilinx.com>
Link: https://lore.kernel.org/r/598cb9515bbabc803f72e287464e3d107cd106a3.1645627920.git.michal.simek@xilinx.com
---

diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index ff8e11f648..646fec7026 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 4038395b12..2530791eb4 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 0000000000..4ead663cd5
--- /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),
+};