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
31 struct hdmi_phy;
32 struct hdmi_platform_config;
33
34 struct hdmi_audio {
35 bool enabled;
36 struct hdmi_audio_infoframe infoframe;
37 int rate;
38 };
39
40 struct 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) */
74 struct 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
100 void hdmi_set_mode(struct hdmi *hdmi, bool power_on);
101
hdmi_write(struct hdmi * hdmi,u32 reg,u32 data)102 static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data)
103 {
104 msm_writel(data, hdmi->mmio + reg);
105 }
106
hdmi_read(struct hdmi * hdmi,u32 reg)107 static 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
118 struct 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
125 struct hdmi_phy {
126 const struct hdmi_phy_funcs *funcs;
127 };
128
129 struct hdmi_phy *hdmi_phy_8960_init(struct hdmi *hdmi);
130 struct hdmi_phy *hdmi_phy_8x60_init(struct hdmi *hdmi);
131 struct hdmi_phy *hdmi_phy_8x74_init(struct hdmi *hdmi);
132
133 /*
134 * audio:
135 */
136
137 int hdmi_audio_update(struct hdmi *hdmi);
138 int 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);
141 void hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
142
143
144 /*
145 * hdmi bridge:
146 */
147
148 struct drm_bridge *hdmi_bridge_init(struct hdmi *hdmi);
149 void hdmi_bridge_destroy(struct drm_bridge *bridge);
150
151 /*
152 * hdmi connector:
153 */
154
155 void hdmi_connector_irq(struct drm_connector *connector);
156 struct drm_connector *hdmi_connector_init(struct hdmi *hdmi);
157
158 /*
159 * i2c adapter for ddc:
160 */
161
162 void hdmi_i2c_irq(struct i2c_adapter *i2c);
163 void hdmi_i2c_destroy(struct i2c_adapter *i2c);
164 struct i2c_adapter *hdmi_i2c_init(struct hdmi *hdmi);
165
166 #endif /* __HDMI_CONNECTOR_H__ */
167