185f812c41
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Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
76 lines
2.1 KiB
C
76 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (c) 2017 Theobroma Systems Design und Consulting GmbH
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*/
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#ifndef __RK_HDMI_H__
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#define __RK_HDMI_H__
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struct rkhdmi_driverdata {
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/* configuration */
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u8 i2c_clk_high;
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u8 i2c_clk_low;
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const char * const *regulator_names;
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u32 regulator_names_cnt;
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/* setters/getters */
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int (*set_input_vop)(struct udevice *dev);
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int (*clk_config)(struct udevice *dev);
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};
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struct rk_hdmi_priv {
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struct dw_hdmi hdmi;
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void *grf;
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};
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/**
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* rk_hdmi_read_edid() - read the attached HDMI/DVI monitor's EDID
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*
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* N.B.: The buffer should be large enough to hold 2 EDID blocks, as
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* this function calls dw_hdmi_read_edid, which ignores buf_size
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* argument and assumes that there's always enough space for 2
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* EDID blocks.
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*
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* @dev: device
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* @buf: output buffer for the EDID
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* @buf_size: number of bytes in the buffer
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* Return: number of bytes read if OK, -ve if something went wrong
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*/
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int rk_hdmi_read_edid(struct udevice *dev, u8 *buf, int buf_size);
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/**
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* rk_hdmi_probe_regulators() - probe (autoset + enable) regulators
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*
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* Probes a list of regulators by performing autoset and enable
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* operations on them. The list of regulators is an array of string
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* pointers and any individual regulator-probe may fail without
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* counting as an error.
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*
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* @dev: device
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* @names: array of string-pointers to regulator names to probe
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* @cnt: number of elements in the 'names' array
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*/
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void rk_hdmi_probe_regulators(struct udevice *dev,
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const char * const *names, int cnt);
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/**
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* rk_hdmi_of_to_plat() - common of_to_plat implementation
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*
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* @dev: device
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* Return: 0 if OK, -ve if something went wrong
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*/
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int rk_hdmi_of_to_plat(struct udevice *dev);
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/**
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* rk_hdmi_probe() - common probe implementation
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*
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* Performs the following, common initialisation steps:
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* 1. checks for HPD (i.e. a HDMI monitor being attached)
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* 2. initialises the Designware HDMI core
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* 3. initialises the Designware HDMI PHY
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*
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* @dev: device
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* Return: 0 if OK, -ve if something went wrong
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*/
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int rk_hdmi_probe(struct udevice *dev);
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#endif
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