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/*
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __HDMI_CONNECTOR_H__
#define __HDMI_CONNECTOR_H__
#include <linux/i2c.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/regulator/consumer.h>
#include <linux/hdmi.h>
#include "msm_drv.h"
#include "hdmi.xml.h"
struct hdmi_phy;
struct hdmi_platform_config;
struct hdmi_audio {
bool enabled;
struct hdmi_audio_infoframe infoframe;
int rate;
};
struct hdmi {
struct kref refcount;
struct drm_device *dev;
struct platform_device *pdev;
const struct hdmi_platform_config *config;
/* audio state: */
struct hdmi_audio audio;
/* video state: */
bool power_on;
unsigned long int pixclock;
void __iomem *mmio;
struct regulator *hpd_regs[2];
struct regulator *pwr_regs[2];
struct clk *hpd_clks[3];
struct clk *pwr_clks[2];
struct hdmi_phy *phy;
struct i2c_adapter *i2c;
struct drm_connector *connector;
struct drm_bridge *bridge;
/* the encoder we are hooked to (outside of hdmi block) */
struct drm_encoder *encoder;
bool hdmi_mode; /* are we in hdmi mode? */
int irq;
};
/* platform config data (ie. from DT, or pdata) */
struct hdmi_platform_config {
struct hdmi_phy *(*phy_init)(struct hdmi *hdmi);
const char *mmio_name;
/* regulators that need to be on for hpd: */
const char **hpd_reg_names;
int hpd_reg_cnt;
/* regulators that need to be on for screen pwr: */
const char **pwr_reg_names;
int pwr_reg_cnt;
/* clks that need to be on for hpd: */
const char **hpd_clk_names;
const long unsigned *hpd_freq;
int hpd_clk_cnt;
/* clks that need to be on for screen pwr (ie pixel clk): */
const char **pwr_clk_names;
int pwr_clk_cnt;
/* gpio's: */
int ddc_clk_gpio, ddc_data_gpio, hpd_gpio, mux_en_gpio, mux_sel_gpio;
/* older devices had their own irq, mdp5+ it is shared w/ mdp: */
bool shared_irq;
};
void hdmi_set_mode(struct hdmi *hdmi, bool power_on);
void hdmi_destroy(struct kref *kref);
static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data)
{
msm_writel(data, hdmi->mmio + reg);
}
static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg)
{
return msm_readl(hdmi->mmio + reg);
}
static inline struct hdmi * hdmi_reference(struct hdmi *hdmi)
{
kref_get(&hdmi->refcount);
return hdmi;
}
static inline void hdmi_unreference(struct hdmi *hdmi)
{
kref_put(&hdmi->refcount, hdmi_destroy);
}
/*
* The phy appears to be different, for example between 8960 and 8x60,
* so split the phy related functions out and load the correct one at
* runtime:
*/
struct hdmi_phy_funcs {
void (*destroy)(struct hdmi_phy *phy);
void (*reset)(struct hdmi_phy *phy);
void (*powerup)(struct hdmi_phy *phy, unsigned long int pixclock);
void (*powerdown)(struct hdmi_phy *phy);
};
struct hdmi_phy {
const struct hdmi_phy_funcs *funcs;
};
struct hdmi_phy *hdmi_phy_8960_init(struct hdmi *hdmi);
struct hdmi_phy *hdmi_phy_8x60_init(struct hdmi *hdmi);
struct hdmi_phy *hdmi_phy_8x74_init(struct hdmi *hdmi);
/*
* audio:
*/
int hdmi_audio_update(struct hdmi *hdmi);
int hdmi_audio_info_setup(struct hdmi *hdmi, bool enabled,
uint32_t num_of_channels, uint32_t channel_allocation,
uint32_t level_shift, bool down_mix);
void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
/*
* hdmi bridge:
*/
struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi);
/*
* hdmi connector:
*/
void hdmi_connector_irq(struct drm_connector *connector);
struct drm_connector *hdmi_connector_init(struct hdmi *hdmi);
/*
* i2c adapter for ddc:
*/
void hdmi_i2c_irq(struct i2c_adapter *i2c);
void hdmi_i2c_destroy(struct i2c_adapter *i2c);
struct i2c_adapter *hdmi_i2c_init(struct hdmi *hdmi);
#endif /* __HDMI_CONNECTOR_H__ */
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