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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2023 Edgeble AI Technologies Pvt. Ltd.
*/
#include <clk.h>
#include <display.h>
#include <dm.h>
#include <dw_hdmi.h>
#include <asm/io.h>
#include <asm/arch-rockchip/grf_rk3328.h>
#include "rk_hdmi.h"
#define RK3328_IO_3V_DOMAIN (7 << (9 + 16))
#define RK3328_IO_5V_DOMAIN ((7 << 9) | (3 << (9 + 16)))
#define RK3328_IO_DDC_IN_MSK ((3 << 10) | (3 << (10 + 16)))
#define RK3328_IO_CTRL_BY_HDMI ((1 << 13) | (1 << (13 + 16)))
static int rk3328_hdmi_enable(struct udevice *dev, int panel_bpp,
const struct display_timing *edid)
{
struct rk_hdmi_priv *priv = dev_get_priv(dev);
return dw_hdmi_enable(&priv->hdmi, edid);
}
static int rk3328_dw_hdmi_phy_cfg(struct dw_hdmi *hdmi, uint pixclock)
{
struct rk_hdmi_priv *priv = container_of(hdmi, struct rk_hdmi_priv, hdmi);
int ret;
ret = generic_phy_init(&priv->phy);
if (ret) {
printf("failed to init phy (ret=%d)\n", ret);
return ret;
}
ret = generic_phy_power_on(&priv->phy);
if (ret) {
printf("failed to power on phy (ret=%d)\n", ret);
return ret;
}
return 0;
}
static void rk3328_dw_hdmi_setup_hpd(struct dw_hdmi *hdmi)
{
struct rk_hdmi_priv *priv = container_of(hdmi, struct rk_hdmi_priv, hdmi);
struct rk3328_grf_regs *grf = priv->grf;
writel(RK3328_IO_DDC_IN_MSK, &grf->soc_con[2]);
writel(RK3328_IO_CTRL_BY_HDMI, &grf->soc_con[3]);
}
static void rk3328_dw_hdmi_read_hpd(struct dw_hdmi *hdmi, bool hpd_status)
{
struct rk_hdmi_priv *priv = container_of(hdmi, struct rk_hdmi_priv, hdmi);
struct rk3328_grf_regs *grf = priv->grf;
if (hpd_status)
writel(RK3328_IO_5V_DOMAIN, &grf->soc_con[4]);
else
writel(RK3328_IO_3V_DOMAIN, &grf->soc_con[4]);
}
static const struct dw_hdmi_phy_ops dw_hdmi_rk3328_phy_ops = {
.phy_set = rk3328_dw_hdmi_phy_cfg,
.setup_hpd = rk3328_dw_hdmi_setup_hpd,
.read_hpd = rk3328_dw_hdmi_read_hpd,
};
static int rk3328_hdmi_of_to_plat(struct udevice *dev)
{
struct rk_hdmi_priv *priv = dev_get_priv(dev);
struct dw_hdmi *hdmi = &priv->hdmi;
hdmi->i2c_clk_high = 0x71;
hdmi->i2c_clk_low = 0x76;
rk_hdmi_of_to_plat(dev);
hdmi->ops = &dw_hdmi_rk3328_phy_ops;
return 0;
}
static int rk3328_hdmi_probe(struct udevice *dev)
{
struct rk_hdmi_priv *priv = dev_get_priv(dev);
int ret;
ret = generic_phy_get_by_name(dev, "hdmi", &priv->phy);
if (ret) {
printf("failed to get hdmi phy\n");
return ret;
};
ret = rk_hdmi_probe(dev);
if (ret) {
printf("failed to probe rk hdmi\n");
return ret;
}
return 0;
}
static const struct dm_display_ops rk3328_hdmi_ops = {
.read_edid = rk_hdmi_read_edid,
.enable = rk3328_hdmi_enable,
};
static const struct udevice_id rk3328_hdmi_ids[] = {
{ .compatible = "rockchip,rk3328-dw-hdmi" },
{ }
};
U_BOOT_DRIVER(rk3328_hdmi_rockchip) = {
.name = "rk3328_hdmi_rockchip",
.id = UCLASS_DISPLAY,
.of_match = rk3328_hdmi_ids,
.ops = &rk3328_hdmi_ops,
.of_to_plat = rk3328_hdmi_of_to_plat,
.probe = rk3328_hdmi_probe,
.priv_auto = sizeof(struct rk_hdmi_priv),
};
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