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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
*/
#include <common.h>
#include <clk.h>
#include <display.h>
#include <dm.h>
#include <dw_hdmi.h>
#include <edid.h>
#include <regmap.h>
#include <syscon.h>
#include <asm/gpio.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/hardware.h>
#include <asm/arch/grf_rk3288.h>
#include <power/regulator.h>
#include "rk_hdmi.h"
static int rk3288_hdmi_enable(struct udevice *dev, int panel_bpp,
const struct display_timing *edid)
{
struct rk_hdmi_priv *priv = dev_get_priv(dev);
struct display_plat *uc_plat = dev_get_uclass_platdata(dev);
int vop_id = uc_plat->source_id;
struct rk3288_grf *grf = priv->grf;
/* hdmi source select hdmi controller */
rk_setreg(&grf->soc_con6, 1 << 15);
/* hdmi data from vop id */
rk_clrsetreg(&grf->soc_con6, 1 << 4, (vop_id == 1) ? (1 << 4) : 0);
return 0;
}
static int rk3288_hdmi_ofdata_to_platdata(struct udevice *dev)
{
struct rk_hdmi_priv *priv = dev_get_priv(dev);
struct dw_hdmi *hdmi = &priv->hdmi;
hdmi->i2c_clk_high = 0x7a;
hdmi->i2c_clk_low = 0x8d;
/*
* TODO(sjg@chromium.org): The above values don't work - these
* ones work better, but generate lots of errors in the data.
*/
hdmi->i2c_clk_high = 0x0d;
hdmi->i2c_clk_low = 0x0d;
return rk_hdmi_ofdata_to_platdata(dev);
}
static int rk3288_clk_config(struct udevice *dev)
{
struct display_plat *uc_plat = dev_get_uclass_platdata(dev);
struct clk clk;
int ret;
/*
* Configure the maximum clock to permit whatever resolution the
* monitor wants
*/
ret = clk_get_by_index(uc_plat->src_dev, 0, &clk);
if (ret >= 0) {
ret = clk_set_rate(&clk, 384000000);
clk_free(&clk);
}
if (ret < 0) {
debug("%s: Failed to set clock in source device '%s': ret=%d\n",
__func__, uc_plat->src_dev->name, ret);
return ret;
}
return 0;
}
static const char * const rk3288_regulator_names[] = {
"vcc50_hdmi"
};
static int rk3288_hdmi_probe(struct udevice *dev)
{
/* Enable VOP clock for RK3288 */
rk3288_clk_config(dev);
/* Enable regulators required for HDMI */
rk_hdmi_probe_regulators(dev, rk3288_regulator_names,
ARRAY_SIZE(rk3288_regulator_names));
return rk_hdmi_probe(dev);
}
static const struct dm_display_ops rk3288_hdmi_ops = {
.read_edid = rk_hdmi_read_edid,
.enable = rk3288_hdmi_enable,
};
static const struct udevice_id rk3288_hdmi_ids[] = {
{ .compatible = "rockchip,rk3288-dw-hdmi" },
{ }
};
U_BOOT_DRIVER(rk3288_hdmi_rockchip) = {
.name = "rk3288_hdmi_rockchip",
.id = UCLASS_DISPLAY,
.of_match = rk3288_hdmi_ids,
.ops = &rk3288_hdmi_ops,
.ofdata_to_platdata = rk3288_hdmi_ofdata_to_platdata,
.probe = rk3288_hdmi_probe,
.priv_auto_alloc_size = sizeof(struct rk_hdmi_priv),
};
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