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