text: // 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_rk3399.h>
  #include <power/regulator.h>
  #include "rk_hdmi.h"
  
  static int rk3399_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 rk3399_grf_regs *grf = priv->grf;
  
  	/* select the hdmi encoder input data from our source_id */
  	rk_clrsetreg(&grf->soc_con20, GRF_RK3399_HDMI_VOP_SEL_MASK,
  		     (vop_id == 1) ? GRF_RK3399_HDMI_VOP_SEL_L : 0);
  
  	return dw_hdmi_enable(&priv->hdmi, edid);
  }
  
  static int rk3399_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;
  
  	return rk_hdmi_ofdata_to_platdata(dev);
  }
  
  static const char * const rk3399_regulator_names[] = {
  	"vcc1v8_hdmi",
  	"vcc0v9_hdmi"
  };
  
  static int rk3399_hdmi_probe(struct udevice *dev)
  {
  	/* Enable regulators required for HDMI */
  	rk_hdmi_probe_regulators(dev, rk3399_regulator_names,
  				 ARRAY_SIZE(rk3399_regulator_names));
  
  	return rk_hdmi_probe(dev);
  }
  
  static const struct dm_display_ops rk3399_hdmi_ops = {
  	.read_edid = rk_hdmi_read_edid,
  	.enable = rk3399_hdmi_enable,
  };
  
  static const struct udevice_id rk3399_hdmi_ids[] = {
  	{ .compatible = "rockchip,rk3399-dw-hdmi" },
  	{ }
  };
  
  U_BOOT_DRIVER(rk3399_hdmi_rockchip) = {
  	.name = "rk3399_hdmi_rockchip",
  	.id = UCLASS_DISPLAY,
  	.of_match = rk3399_hdmi_ids,
  	.ops = &rk3399_hdmi_ops,
  	.ofdata_to_platdata = rk3399_hdmi_ofdata_to_platdata,
  	.probe = rk3399_hdmi_probe,
  	.priv_auto_alloc_size = sizeof(struct rk_hdmi_priv),
  };
  