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); 101 102 static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data) 103 { 104 msm_writel(data, hdmi->mmio + reg); 105 } 106 107 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