drivers/video/rockchip/rk3399_vop.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
   4  * Copyright (c) 2015 Google, Inc
   5  * Copyright 2014 Rockchip Inc.
   6  */
   7
   8 #include <common.h>
   9 #include <display.h>
  10 #include <dm.h>
  11 #include <regmap.h>
  12 #include <video.h>
  13 #include <asm/arch-rockchip/hardware.h>
  14 #include <asm/io.h>
  15 #include "rk_vop.h"
  16
  17 DECLARE_GLOBAL_DATA_PTR;
  18
  19 static void rk3399_set_pin_polarity(struct udevice *dev,
  20                                     enum vop_modes mode, u32 polarity)
  21 {
  22         struct rk_vop_priv *priv = dev_get_priv(dev);
  23         struct rk3288_vop *regs = priv->regs;
  24
  25         /*
  26          * The RK3399 VOPs (v3.5 and v3.6) require a per-mode setting of
  27          * the polarity configuration (in ctrl1).
  28          */
  29         switch (mode) {
  30         case VOP_MODE_HDMI:
  31                 clrsetbits_le32(&regs->dsp_ctrl1,
  32                                 M_RK3399_DSP_HDMI_POL,
  33                                 V_RK3399_DSP_HDMI_POL(polarity));
  34                 break;
  35
  36         case VOP_MODE_EDP:
  37                 clrsetbits_le32(&regs->dsp_ctrl1,
  38                                 M_RK3399_DSP_EDP_POL,
  39                                 V_RK3399_DSP_EDP_POL(polarity));
  40                 break;
  41
  42         case VOP_MODE_MIPI:
  43                 clrsetbits_le32(&regs->dsp_ctrl1,
  44                                 M_RK3399_DSP_MIPI_POL,
  45                                 V_RK3399_DSP_MIPI_POL(polarity));
  46                 break;
  47
  48         case VOP_MODE_LVDS:
  49                 /* The RK3399 has neither parallel RGB nor LVDS output. */
  50         default:
  51                 debug("%s: unsupported output mode %x\n", __func__, mode);
  52         }
  53 }
  54
  55 /*
  56  * Try some common regulators. We should really get these from the
  57  * device tree somehow.
  58  */
  59 static const char * const rk3399_regulator_names[] = {
  60         "vcc33_lcd"
  61 };
  62
  63 static int rk3399_vop_probe(struct udevice *dev)
  64 {
  65         /* Before relocation we don't need to do anything */
  66         if (!(gd->flags & GD_FLG_RELOC))
  67                 return 0;
  68
  69         /* Probe regulators required for the RK3399 VOP */
  70         rk_vop_probe_regulators(dev, rk3399_regulator_names,
  71                                 ARRAY_SIZE(rk3399_regulator_names));
  72
  73         return rk_vop_probe(dev);
  74 }
  75
  76 struct rkvop_driverdata rk3399_lit_driverdata = {
  77         .set_pin_polarity = rk3399_set_pin_polarity,
  78 };
  79
  80 struct rkvop_driverdata rk3399_big_driverdata = {
  81         .features = VOP_FEATURE_OUTPUT_10BIT,
  82         .set_pin_polarity = rk3399_set_pin_polarity,
  83 };
  84
  85 static const struct udevice_id rk3399_vop_ids[] = {
  86         { .compatible = "rockchip,rk3399-vop-big",
  87           .data = (ulong)&rk3399_big_driverdata },
  88         { .compatible = "rockchip,rk3399-vop-lit",
  89           .data = (ulong)&rk3399_lit_driverdata },
  90         { }
  91 };
  92
  93 static const struct video_ops rk3399_vop_ops = {
  94 };
  95
  96 U_BOOT_DRIVER(rk3399_vop) = {
  97         .name   = "rk3399_vop",
  98         .id     = UCLASS_VIDEO,
  99         .of_match = rk3399_vop_ids,
 100         .ops    = &rk3399_vop_ops,
 101         .bind   = rk_vop_bind,
 102         .probe  = rk3399_vop_probe,
 103         .priv_auto_alloc_size   = sizeof(struct rk_vop_priv),
 104 };