rk_hdmi.h
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
*/
#ifndef __RK_HDMI_H__
#define __RK_HDMI_H__
struct rkhdmi_driverdata {
/* configuration */
u8 i2c_clk_high;
u8 i2c_clk_low;
const char * const *regulator_names;
u32 regulator_names_cnt;
/* setters/getters */
int (*set_input_vop)(struct udevice *dev);
int (*clk_config)(struct udevice *dev);
};
struct rk_hdmi_priv {
struct dw_hdmi hdmi;
void *grf;
};
/**
* rk_hdmi_read_edid() - read the attached HDMI/DVI monitor's EDID
*
* N.B.: The buffer should be large enough to hold 2 EDID blocks, as
* this function calls dw_hdmi_read_edid, which ignores buf_size
* argument and assumes that there's always enough space for 2
* EDID blocks.
*
* @dev: device
* @buf: output buffer for the EDID
* @buf_size: number of bytes in the buffer
* @return number of bytes read if OK, -ve if something went wrong
*/
int rk_hdmi_read_edid(struct udevice *dev, u8 *buf, int buf_size);
/**
* rk_hdmi_probe_regulators() - probe (autoset + enable) regulators
*
* Probes a list of regulators by performing autoset and enable
* operations on them. The list of regulators is an array of string
* pointers and any individual regulator-probe may fail without
* counting as an error.
*
* @dev: device
* @names: array of string-pointers to regulator names to probe
* @cnt: number of elements in the 'names' array
*/
void rk_hdmi_probe_regulators(struct udevice *dev,
const char * const *names, int cnt);
/**
* rk_hdmi_ofdata_to_platdata() - common ofdata_to_platdata implementation
*
* @dev: device
* @return 0 if OK, -ve if something went wrong
*/
int rk_hdmi_ofdata_to_platdata(struct udevice *dev);
/**
* rk_hdmi_probe() - common probe implementation
*
* Performs the following, common initialisation steps:
* 1. checks for HPD (i.e. a HDMI monitor being attached)
* 2. initialises the Designware HDMI core
* 3. initialises the Designware HDMI PHY
*
* @dev: device
* @return 0 if OK, -ve if something went wrong
*/
int rk_hdmi_probe(struct udevice *dev);
#endif