drivers/video/rockchip/rk3399_hdmi.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
   4  */
   5
   6 #include <common.h>
   7 #include <clk.h>
   8 #include <display.h>
   9 #include <dm.h>
  10 #include <dw_hdmi.h>
  11 #include <edid.h>
  12 #include <regmap.h>
  13 #include <syscon.h>
  14 #include <asm/gpio.h>
  15 #include <asm/io.h>
  16 #include <asm/arch/clock.h>
  17 #include <asm/arch/hardware.h>
  18 #include <asm/arch/grf_rk3399.h>
  19 #include <power/regulator.h>
  20 #include "rk_hdmi.h"
  21
  22 static int rk3399_hdmi_enable(struct udevice *dev, int panel_bpp,
  23                               const struct display_timing *edid)
  24 {
  25         struct rk_hdmi_priv *priv = dev_get_priv(dev);
  26         struct display_plat *uc_plat = dev_get_uclass_platdata(dev);
  27         int vop_id = uc_plat->source_id;
  28         struct rk3399_grf_regs *grf = priv->grf;
  29
  30         /* select the hdmi encoder input data from our source_id */
  31         rk_clrsetreg(&grf->soc_con20, GRF_RK3399_HDMI_VOP_SEL_MASK,
  32                      (vop_id == 1) ? GRF_RK3399_HDMI_VOP_SEL_L : 0);
  33
  34         return dw_hdmi_enable(&priv->hdmi, edid);
  35 }
  36
  37 static int rk3399_hdmi_ofdata_to_platdata(struct udevice *dev)
  38 {
  39         struct rk_hdmi_priv *priv = dev_get_priv(dev);
  40         struct dw_hdmi *hdmi = &priv->hdmi;
  41
  42         hdmi->i2c_clk_high = 0x7a;
  43         hdmi->i2c_clk_low = 0x8d;
  44
  45         return rk_hdmi_ofdata_to_platdata(dev);
  46 }
  47
  48 static const char * const rk3399_regulator_names[] = {
  49         "vcc1v8_hdmi",
  50         "vcc0v9_hdmi"
  51 };
  52
  53 static int rk3399_hdmi_probe(struct udevice *dev)
  54 {
  55         /* Enable regulators required for HDMI */
  56         rk_hdmi_probe_regulators(dev, rk3399_regulator_names,
  57                                  ARRAY_SIZE(rk3399_regulator_names));
  58
  59         return rk_hdmi_probe(dev);
  60 }
  61
  62 static const struct dm_display_ops rk3399_hdmi_ops = {
  63         .read_edid = rk_hdmi_read_edid,
  64         .enable = rk3399_hdmi_enable,
  65 };
  66
  67 static const struct udevice_id rk3399_hdmi_ids[] = {
  68         { .compatible = "rockchip,rk3399-dw-hdmi" },
  69         { }
  70 };
  71
  72 U_BOOT_DRIVER(rk3399_hdmi_rockchip) = {
  73         .name = "rk3399_hdmi_rockchip",
  74         .id = UCLASS_DISPLAY,
  75         .of_match = rk3399_hdmi_ids,
  76         .ops = &rk3399_hdmi_ops,
  77         .ofdata_to_platdata = rk3399_hdmi_ofdata_to_platdata,
  78         .probe = rk3399_hdmi_probe,
  79         .priv_auto_alloc_size = sizeof(struct rk_hdmi_priv),
  80 };