git.sur5r.net Git - u-boot/blob - drivers/video/rockchip/rk3399_hdmi.c

   1 /*
   2  * Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <clk.h>
   9 #include <display.h>
  10 #include <dm.h>
  11 #include <dw_hdmi.h>
  12 #include <edid.h>
  13 #include <regmap.h>
  14 #include <syscon.h>
  15 #include <asm/gpio.h>
  16 #include <asm/io.h>
  17 #include <asm/arch/clock.h>
  18 #include <asm/arch/hardware.h>
  19 #include <asm/arch/grf_rk3399.h>
  20 #include <power/regulator.h>
  21 #include "rk_hdmi.h"
  22
  23 static int rk3399_hdmi_enable(struct udevice *dev, int panel_bpp,
  24                               const struct display_timing *edid)
  25 {
  26         struct rk_hdmi_priv *priv = dev_get_priv(dev);
  27         struct display_plat *uc_plat = dev_get_uclass_platdata(dev);
  28         int vop_id = uc_plat->source_id;
  29         struct rk3399_grf_regs *grf = priv->grf;
  30
  31         /* select the hdmi encoder input data from our source_id */
  32         rk_clrsetreg(&grf->soc_con20, GRF_RK3399_HDMI_VOP_SEL_MASK,
  33                      (vop_id == 1) ? GRF_RK3399_HDMI_VOP_SEL_L : 0);
  34
  35         return dw_hdmi_enable(&priv->hdmi, edid);
  36 }
  37
  38 static int rk3399_hdmi_ofdata_to_platdata(struct udevice *dev)
  39 {
  40         struct rk_hdmi_priv *priv = dev_get_priv(dev);
  41         struct dw_hdmi *hdmi = &priv->hdmi;
  42
  43         hdmi->i2c_clk_high = 0x7a;
  44         hdmi->i2c_clk_low = 0x8d;
  45
  46         return rk_hdmi_ofdata_to_platdata(dev);
  47 }
  48
  49 static const char * const rk3399_regulator_names[] = {
  50         "vcc1v8_hdmi",
  51         "vcc0v9_hdmi"
  52 };
  53
  54 static int rk3399_hdmi_probe(struct udevice *dev)
  55 {
  56         /* Enable regulators required for HDMI */
  57         rk_hdmi_probe_regulators(dev, rk3399_regulator_names,
  58                                  ARRAY_SIZE(rk3399_regulator_names));
  59
  60         return rk_hdmi_probe(dev);
  61 }
  62
  63 static const struct dm_display_ops rk3399_hdmi_ops = {
  64         .read_edid = rk_hdmi_read_edid,
  65         .enable = rk3399_hdmi_enable,
  66 };
  67
  68 static const struct udevice_id rk3399_hdmi_ids[] = {
  69         { .compatible = "rockchip,rk3399-dw-hdmi" },
  70         { }
  71 };
  72
  73 U_BOOT_DRIVER(rk3399_hdmi_rockchip) = {
  74         .name = "rk3399_hdmi_rockchip",
  75         .id = UCLASS_DISPLAY,
  76         .of_match = rk3399_hdmi_ids,
  77         .ops = &rk3399_hdmi_ops,
  78         .ofdata_to_platdata = rk3399_hdmi_ofdata_to_platdata,
  79         .probe = rk3399_hdmi_probe,
  80         .priv_auto_alloc_size = sizeof(struct rk_hdmi_priv),
  81 };