GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

source/bootloader/u-boot-2020.01/drivers/video/rockchip/rk3288_vop.c

@@ -0,0 +1,108 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
+ * Copyright (c) 2015 Google, Inc
+ * Copyright 2014 Rockchip Inc.
+ */
+
+#include <common.h>
+#include <display.h>
+#include <dm.h>
+#include <regmap.h>
+#include <syscon.h>
+#include <video.h>
+#include <asm/io.h>
+#include <asm/arch-rockchip/clock.h>
+#include <asm/arch-rockchip/grf_rk3288.h>
+#include <asm/arch-rockchip/hardware.h>
+#include "rk_vop.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static void rk3288_set_pin_polarity(struct udevice *dev,
+				    enum vop_modes mode, u32 polarity)
+{
+	struct rk_vop_priv *priv = dev_get_priv(dev);
+	struct rk3288_vop *regs = priv->regs;
+
+	/* The RK3328 VOP (v3.1) has its polarity configuration in ctrl0 */
+	clrsetbits_le32(&regs->dsp_ctrl0,
+			M_DSP_DCLK_POL | M_DSP_DEN_POL |
+			M_DSP_VSYNC_POL | M_DSP_HSYNC_POL,
+			V_DSP_PIN_POL(polarity));
+}
+
+static void rk3288_set_io_vsel(struct udevice *dev)
+{
+	struct rk3288_grf *grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
+
+	/* lcdc(vop) iodomain select 1.8V */
+	rk_setreg(&grf->io_vsel, 1 << 0);
+}
+
+/*
+ * Try some common regulators. We should really get these from the
+ * device tree somehow.
+ */
+static const char * const rk3288_regulator_names[] = {
+	"vcc18_lcd",
+	"VCC18_LCD",
+	"vdd10_lcd_pwren_h",
+	"vdd10_lcd",
+	"VDD10_LCD",
+	"vcc33_lcd"
+};
+
+static int rk3288_vop_probe(struct udevice *dev)
+{
+	/* Before relocation we don't need to do anything */
+	if (!(gd->flags & GD_FLG_RELOC))
+		return 0;
+
+	/* Set the LCDC(vop) iodomain to 1.8V */
+	rk3288_set_io_vsel(dev);
+
+	/* Probe regulators required for the RK3288 VOP */
+	rk_vop_probe_regulators(dev, rk3288_regulator_names,
+				ARRAY_SIZE(rk3288_regulator_names));
+
+	return rk_vop_probe(dev);
+}
+
+static int rk_vop_remove(struct udevice *dev)
+{
+	struct rk_vop_priv *priv = dev_get_priv(dev);
+        struct rk3288_vop *regs = priv->regs;
+
+	setbits_le32(&regs->sys_ctrl, V_STANDBY_EN(1));
+
+	/* wait frame complete (60Hz) to enter standby */
+	mdelay(17);
+
+	return 0;
+}
+
+struct rkvop_driverdata rk3288_driverdata = {
+	.features = VOP_FEATURE_OUTPUT_10BIT,
+	.set_pin_polarity = rk3288_set_pin_polarity,
+};
+
+static const struct udevice_id rk3288_vop_ids[] = {
+	{ .compatible = "rockchip,rk3288-vop",
+	  .data = (ulong)&rk3288_driverdata },
+	{ }
+};
+
+static const struct video_ops rk3288_vop_ops = {
+};
+
+U_BOOT_DRIVER(rk_vop) = {
+	.name	= "rk3288_vop",
+	.id	= UCLASS_VIDEO,
+	.of_match = rk3288_vop_ids,
+	.ops	= &rk3288_vop_ops,
+	.bind	= rk_vop_bind,
+	.probe	= rk3288_vop_probe,
+        .remove = rk_vop_remove,
+	.priv_auto_alloc_size	= sizeof(struct rk_vop_priv),
+};