LXR uboot/drivers/video/rockchip/rk

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
   4 */
   5
   6#ifndef __RK_HDMI_H__
   7#define __RK_HDMI_H__
   8
   9struct rkhdmi_driverdata {
  10        /* configuration */
  11        u8 i2c_clk_high;
  12        u8 i2c_clk_low;
  13        const char * const *regulator_names;
  14        u32 regulator_names_cnt;
  15        /* setters/getters */
  16        int (*set_input_vop)(struct udevice *dev);
  17        int (*clk_config)(struct udevice *dev);
  18};
  19
  20struct rk_hdmi_priv {
  21        struct dw_hdmi hdmi;
  22        void *grf;
  23};
  24
  25/**
  26 * rk_hdmi_read_edid() - read the attached HDMI/DVI monitor's EDID
  27 *
  28 * N.B.: The buffer should be large enough to hold 2 EDID blocks, as
  29 *       this function calls dw_hdmi_read_edid, which ignores buf_size
  30 *       argument and assumes that there's always enough space for 2
  31 *       EDID blocks.
  32 *
  33 * @dev:        device
  34 * @buf:        output buffer for the EDID
  35 * @buf_size:   number of bytes in the buffer
  36 * @return number of bytes read if OK, -ve if something went wrong
  37 */
  38int rk_hdmi_read_edid(struct udevice *dev, u8 *buf, int buf_size);
  39
  40/**
  41 * rk_hdmi_probe_regulators() - probe (autoset + enable) regulators
  42 *
  43 * Probes a list of regulators by performing autoset and enable
  44 * operations on them.  The list of regulators is an array of string
  45 * pointers and any individual regulator-probe may fail without
  46 * counting as an error.
  47 *
  48 * @dev:        device
  49 * @names:      array of string-pointers to regulator names to probe
  50 * @cnt:        number of elements in the 'names' array
  51 */
  52void rk_hdmi_probe_regulators(struct udevice *dev,
  53                              const char * const *names, int cnt);
  54/**
  55 * rk_hdmi_of_to_plat() - common of_to_plat implementation
  56 *
  57 * @dev:        device
  58 * @return 0 if OK, -ve if something went wrong
  59 */
  60int rk_hdmi_of_to_plat(struct udevice *dev);
  61
  62/**
  63 * rk_hdmi_probe() - common probe implementation
  64 *
  65 * Performs the following, common initialisation steps:
  66 * 1. checks for HPD (i.e. a HDMI monitor being attached)
  67 * 2. initialises the Designware HDMI core
  68 * 3. initialises the Designware HDMI PHY
  69 *
  70 * @dev:        device
  71 * @return 0 if OK, -ve if something went wrong
  72 */
  73int rk_hdmi_probe(struct udevice *dev);
  74
  75#endif
  76