138 lines
3.5 KiB
Diff
138 lines
3.5 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Paolo Sabatino <[email protected]>
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Date: Sun, 30 Jun 2024 17:41:01 +0200
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Subject: rk3228 vop driver
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---
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drivers/video/rockchip/Makefile | 1 +
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drivers/video/rockchip/rk3228_vop.c | 107 ++++++++++
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2 files changed, 108 insertions(+)
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diff --git a/drivers/video/rockchip/Makefile b/drivers/video/rockchip/Makefile
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index 111111111111..222222222222 100644
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--- a/drivers/video/rockchip/Makefile
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+++ b/drivers/video/rockchip/Makefile
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@@ -5,6 +5,7 @@
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ifdef CONFIG_VIDEO_ROCKCHIP
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obj-y += rk_vop.o
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+obj-$(CONFIG_ROCKCHIP_RK322X) += rk3228_vop.o
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obj-$(CONFIG_ROCKCHIP_RK3288) += rk3288_vop.o
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obj-$(CONFIG_ROCKCHIP_RK3328) += rk3328_vop.o
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obj-$(CONFIG_ROCKCHIP_RK3399) += rk3399_vop.o
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diff --git a/drivers/video/rockchip/rk3228_vop.c b/drivers/video/rockchip/rk3228_vop.c
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new file mode 100644
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index 000000000000..111111111111
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--- /dev/null
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+++ b/drivers/video/rockchip/rk3228_vop.c
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@@ -0,0 +1,106 @@
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+// SPDX-License-Identifier: GPL-2.0+
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+/*
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+ * Copyright (c) 2023 Edgeble AI Technologies Pvt. Ltd.
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+ */
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+#include <dm.h>
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+#include <video.h>
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+#include <asm/io.h>
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+#include <reset.h>
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+#include <clk.h>
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+#include <linux/delay.h>
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+#include "rk_vop.h"
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+
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+DECLARE_GLOBAL_DATA_PTR;
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+
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+static void rk3228_set_pin_polarity(struct udevice *dev,
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+ enum vop_modes mode, u32 polarity)
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+{
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+ struct rk_vop_priv *priv = dev_get_priv(dev);
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+ struct rk3288_vop *regs = priv->regs;
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+
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+ switch (mode) {
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+ case VOP_MODE_HDMI:
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+ clrsetbits_le32(®s->dsp_ctrl1,
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+ M_RK3399_DSP_HDMI_POL,
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+ V_RK3399_DSP_HDMI_POL(polarity));
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+ break;
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+ default:
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+ debug("%s: unsupported output mode %x\n", __func__, mode);
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+ }
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+}
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+
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+static int rk3228_vop_probe(struct udevice *dev)
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+{
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+ /* Before relocation we don't need to do anything */
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+ if (!(gd->flags & GD_FLG_RELOC))
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+ return 0;
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+
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+ return rk_vop_probe(dev);
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+}
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+
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+/**
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+ * During remove phase we assert the resets and deassert them,
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+ * so in practice we "turn off" the VOP resetting it and then
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+ * "turn on" it. This is especially true for the dlck because
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+ * this avoids iommu complaining later during kernel boot
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+ * @see https://lore.kernel.org/linux-arm-kernel/[email protected]/
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+ */
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+static int rk3228_vop_remove(struct udevice *dev)
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+{
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+ struct rk_vop_priv *priv = dev_get_priv(dev);
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+ struct rk3288_vop *regs = priv->regs;
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+ struct reset_ctl_bulk resets;
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+
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+ int ret;
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+
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+ debug("%s\n", __func__);
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+
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+ /* set to standby */
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+ setbits_le32(®s->sys_ctrl, V_STANDBY_EN(1));
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+ clrsetbits_le32(®s->sys_ctrl, M_ALL_OUT_EN, 0x0);
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+
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+ ret = reset_get_bulk(dev, &resets);
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+ if (ret) {
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+ printf("failed to get resets (ret=%d)\n", ret);
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+ return ret;
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+ }
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+
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+ reset_assert_bulk(&resets);
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+ udelay(20);
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+
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+ reset_deassert_bulk(&resets);
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+ udelay(20);
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+
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+ return 0;
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+
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+}
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+
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+struct rkvop_driverdata rk3228_driverdata = {
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+ .dsp_offset = 0x0,
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+ .win_offset = 0x0,
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+ .features = VOP_FEATURE_OUTPUT_10BIT,
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+ .set_pin_polarity = rk3228_set_pin_polarity,
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+};
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+
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+static const struct udevice_id rk3228_vop_ids[] = {
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+ {
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+ .compatible = "rockchip,rk3228-vop",
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+ .data = (ulong)&rk3228_driverdata
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+ },
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+ { /* sentile */ }
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+};
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+
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+static const struct video_ops rk3228_vop_ops = {
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+};
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+
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+U_BOOT_DRIVER(rockchip_rk3228_vop) = {
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+ .name = "rockchip_rk3228_vop",
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+ .id = UCLASS_VIDEO,
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+ .of_match = rk3228_vop_ids,
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+ .ops = &rk3228_vop_ops,
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+ .bind = rk_vop_bind,
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+ .probe = rk3228_vop_probe,
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+ .remove = rk3228_vop_remove,
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+ .priv_auto = sizeof(struct rk_vop_priv),
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+ .flags = DM_FLAG_OS_PREPARE
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+};
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--
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Armbian
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