1/*
2 * Copyright (C) 2013 Red Hat
3 * Author: Rob Clark <robdclark@gmail.com>
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program.  If not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef __HDMI_CONNECTOR_H__
19#define __HDMI_CONNECTOR_H__
20
21#include <linux/i2c.h>
22#include <linux/clk.h>
23#include <linux/platform_device.h>
24#include <linux/regulator/consumer.h>
25#include <linux/hdmi.h>
26
27#include "msm_drv.h"
28#include "hdmi.xml.h"
29
30
31struct hdmi_phy;
32struct hdmi_platform_config;
33
34struct hdmi_audio {
35	bool enabled;
36	struct hdmi_audio_infoframe infoframe;
37	int rate;
38};
39
40struct hdmi {
41	struct drm_device *dev;
42	struct platform_device *pdev;
43
44	const struct hdmi_platform_config *config;
45
46	/* audio state: */
47	struct hdmi_audio audio;
48
49	/* video state: */
50	bool power_on;
51	unsigned long int pixclock;
52
53	void __iomem *mmio;
54
55	struct regulator **hpd_regs;
56	struct regulator **pwr_regs;
57	struct clk **hpd_clks;
58	struct clk **pwr_clks;
59
60	struct hdmi_phy *phy;
61	struct i2c_adapter *i2c;
62	struct drm_connector *connector;
63	struct drm_bridge *bridge;
64
65	/* the encoder we are hooked to (outside of hdmi block) */
66	struct drm_encoder *encoder;
67
68	bool hdmi_mode;               /* are we in hdmi mode? */
69
70	int irq;
71};
72
73/* platform config data (ie. from DT, or pdata) */
74struct hdmi_platform_config {
75	struct hdmi_phy *(*phy_init)(struct hdmi *hdmi);
76	const char *mmio_name;
77
78	/* regulators that need to be on for hpd: */
79	const char **hpd_reg_names;
80	int hpd_reg_cnt;
81
82	/* regulators that need to be on for screen pwr: */
83	const char **pwr_reg_names;
84	int pwr_reg_cnt;
85
86	/* clks that need to be on for hpd: */
87	const char **hpd_clk_names;
88	const long unsigned *hpd_freq;
89	int hpd_clk_cnt;
90
91	/* clks that need to be on for screen pwr (ie pixel clk): */
92	const char **pwr_clk_names;
93	int pwr_clk_cnt;
94
95	/* gpio's: */
96	int ddc_clk_gpio, ddc_data_gpio, hpd_gpio, mux_en_gpio, mux_sel_gpio;
97	int mux_lpm_gpio;
98};
99
100void hdmi_set_mode(struct hdmi *hdmi, bool power_on);
101
102static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data)
103{
104	msm_writel(data, hdmi->mmio + reg);
105}
106
107static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg)
108{
109	return msm_readl(hdmi->mmio + reg);
110}
111
112/*
113 * The phy appears to be different, for example between 8960 and 8x60,
114 * so split the phy related functions out and load the correct one at
115 * runtime:
116 */
117
118struct hdmi_phy_funcs {
119	void (*destroy)(struct hdmi_phy *phy);
120	void (*reset)(struct hdmi_phy *phy);
121	void (*powerup)(struct hdmi_phy *phy, unsigned long int pixclock);
122	void (*powerdown)(struct hdmi_phy *phy);
123};
124
125struct hdmi_phy {
126	const struct hdmi_phy_funcs *funcs;
127};
128
129struct hdmi_phy *hdmi_phy_8960_init(struct hdmi *hdmi);
130struct hdmi_phy *hdmi_phy_8x60_init(struct hdmi *hdmi);
131struct hdmi_phy *hdmi_phy_8x74_init(struct hdmi *hdmi);
132
133/*
134 * audio:
135 */
136
137int hdmi_audio_update(struct hdmi *hdmi);
138int hdmi_audio_info_setup(struct hdmi *hdmi, bool enabled,
139	uint32_t num_of_channels, uint32_t channel_allocation,
140	uint32_t level_shift, bool down_mix);
141void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
142
143
144/*
145 * hdmi bridge:
146 */
147
148struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi);
149void hdmi_bridge_destroy(struct drm_bridge *bridge);
150
151/*
152 * hdmi connector:
153 */
154
155void hdmi_connector_irq(struct drm_connector *connector);
156struct drm_connector *hdmi_connector_init(struct hdmi *hdmi);
157
158/*
159 * i2c adapter for ddc:
160 */
161
162void hdmi_i2c_irq(struct i2c_adapter *i2c);
163void hdmi_i2c_destroy(struct i2c_adapter *i2c);
164struct i2c_adapter *hdmi_i2c_init(struct hdmi *hdmi);
165
166#endif /* __HDMI_CONNECTOR_H__ */
167