1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) 2013 Red Hat
4 * Author: Rob Clark <robdclark@gmail.com>
5 */
6
7 #ifndef __HDMI_CONNECTOR_H__
8 #define __HDMI_CONNECTOR_H__
9
10 #include <linux/i2c.h>
11 #include <linux/clk.h>
12 #include <linux/platform_device.h>
13 #include <linux/regulator/consumer.h>
14 #include <linux/gpio/consumer.h>
15 #include <linux/hdmi.h>
16
17 #include <drm/drm_bridge.h>
18
19 #include "msm_drv.h"
20 #include "hdmi.xml.h"
21
22 struct hdmi_phy;
23 struct hdmi_platform_config;
24
25 struct hdmi_audio {
26 bool enabled;
27 struct hdmi_audio_infoframe infoframe;
28 int rate;
29 };
30
31 struct hdmi_hdcp_ctrl;
32
33 struct hdmi {
34 struct drm_device *dev;
35 struct platform_device *pdev;
36 struct platform_device *audio_pdev;
37
38 const struct hdmi_platform_config *config;
39
40 /* audio state: */
41 struct hdmi_audio audio;
42
43 /* video state: */
44 bool power_on;
45 unsigned long int pixclock;
46
47 void __iomem *mmio;
48 void __iomem *qfprom_mmio;
49 phys_addr_t mmio_phy_addr;
50
51 struct regulator_bulk_data *hpd_regs;
52 struct regulator_bulk_data *pwr_regs;
53 struct clk **hpd_clks;
54 struct clk **pwr_clks;
55
56 struct gpio_desc *hpd_gpiod;
57
58 struct hdmi_phy *phy;
59 struct device *phy_dev;
60
61 struct i2c_adapter *i2c;
62 struct drm_connector *connector;
63 struct drm_bridge *bridge;
64
65 struct drm_bridge *next_bridge;
66
67 /* the encoder we are hooked to (outside of hdmi block) */
68 struct drm_encoder *encoder;
69
70 bool hdmi_mode; /* are we in hdmi mode? */
71
72 int irq;
73 struct workqueue_struct *workq;
74
75 struct hdmi_hdcp_ctrl *hdcp_ctrl;
76
77 /*
78 * spinlock to protect registers shared by different execution
79 * REG_HDMI_CTRL
80 * REG_HDMI_DDC_ARBITRATION
81 * REG_HDMI_HDCP_INT_CTRL
82 * REG_HDMI_HPD_CTRL
83 */
84 spinlock_t reg_lock;
85 };
86
87 /* platform config data (ie. from DT, or pdata) */
88 struct hdmi_platform_config {
89 const char *mmio_name;
90 const char *qfprom_mmio_name;
91
92 /* regulators that need to be on for hpd: */
93 const char **hpd_reg_names;
94 int hpd_reg_cnt;
95
96 /* regulators that need to be on for screen pwr: */
97 const char **pwr_reg_names;
98 int pwr_reg_cnt;
99
100 /* clks that need to be on for hpd: */
101 const char **hpd_clk_names;
102 const long unsigned *hpd_freq;
103 int hpd_clk_cnt;
104
105 /* clks that need to be on for screen pwr (ie pixel clk): */
106 const char **pwr_clk_names;
107 int pwr_clk_cnt;
108 };
109
110 struct hdmi_bridge {
111 struct drm_bridge base;
112 struct hdmi *hdmi;
113 struct work_struct hpd_work;
114 };
115 #define to_hdmi_bridge(x) container_of(x, struct hdmi_bridge, base)
116
117 void msm_hdmi_set_mode(struct hdmi *hdmi, bool power_on);
118
hdmi_write(struct hdmi * hdmi,u32 reg,u32 data)119 static inline void hdmi_write(struct hdmi *hdmi, u32 reg, u32 data)
120 {
121 msm_writel(data, hdmi->mmio + reg);
122 }
123
hdmi_read(struct hdmi * hdmi,u32 reg)124 static inline u32 hdmi_read(struct hdmi *hdmi, u32 reg)
125 {
126 return msm_readl(hdmi->mmio + reg);
127 }
128
hdmi_qfprom_read(struct hdmi * hdmi,u32 reg)129 static inline u32 hdmi_qfprom_read(struct hdmi *hdmi, u32 reg)
130 {
131 return msm_readl(hdmi->qfprom_mmio + reg);
132 }
133
134 /*
135 * hdmi phy:
136 */
137
138 enum hdmi_phy_type {
139 MSM_HDMI_PHY_8x60,
140 MSM_HDMI_PHY_8960,
141 MSM_HDMI_PHY_8x74,
142 MSM_HDMI_PHY_8996,
143 MSM_HDMI_PHY_MAX,
144 };
145
146 struct hdmi_phy_cfg {
147 enum hdmi_phy_type type;
148 void (*powerup)(struct hdmi_phy *phy, unsigned long int pixclock);
149 void (*powerdown)(struct hdmi_phy *phy);
150 const char * const *reg_names;
151 int num_regs;
152 const char * const *clk_names;
153 int num_clks;
154 };
155
156 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x60_cfg;
157 extern const struct hdmi_phy_cfg msm_hdmi_phy_8960_cfg;
158 extern const struct hdmi_phy_cfg msm_hdmi_phy_8x74_cfg;
159 extern const struct hdmi_phy_cfg msm_hdmi_phy_8996_cfg;
160
161 struct hdmi_phy {
162 struct platform_device *pdev;
163 void __iomem *mmio;
164 struct hdmi_phy_cfg *cfg;
165 const struct hdmi_phy_funcs *funcs;
166 struct regulator_bulk_data *regs;
167 struct clk **clks;
168 };
169
hdmi_phy_write(struct hdmi_phy * phy,u32 reg,u32 data)170 static inline void hdmi_phy_write(struct hdmi_phy *phy, u32 reg, u32 data)
171 {
172 msm_writel(data, phy->mmio + reg);
173 }
174
hdmi_phy_read(struct hdmi_phy * phy,u32 reg)175 static inline u32 hdmi_phy_read(struct hdmi_phy *phy, u32 reg)
176 {
177 return msm_readl(phy->mmio + reg);
178 }
179
180 int msm_hdmi_phy_resource_enable(struct hdmi_phy *phy);
181 void msm_hdmi_phy_resource_disable(struct hdmi_phy *phy);
182 void msm_hdmi_phy_powerup(struct hdmi_phy *phy, unsigned long int pixclock);
183 void msm_hdmi_phy_powerdown(struct hdmi_phy *phy);
184 void __init msm_hdmi_phy_driver_register(void);
185 void __exit msm_hdmi_phy_driver_unregister(void);
186
187 #ifdef CONFIG_COMMON_CLK
188 int msm_hdmi_pll_8960_init(struct platform_device *pdev);
189 int msm_hdmi_pll_8996_init(struct platform_device *pdev);
190 #else
msm_hdmi_pll_8960_init(struct platform_device * pdev)191 static inline int msm_hdmi_pll_8960_init(struct platform_device *pdev)
192 {
193 return -ENODEV;
194 }
195
msm_hdmi_pll_8996_init(struct platform_device * pdev)196 static inline int msm_hdmi_pll_8996_init(struct platform_device *pdev)
197 {
198 return -ENODEV;
199 }
200 #endif
201
202 /*
203 * audio:
204 */
205 /* Supported HDMI Audio channels and rates */
206 #define MSM_HDMI_AUDIO_CHANNEL_2 0
207 #define MSM_HDMI_AUDIO_CHANNEL_4 1
208 #define MSM_HDMI_AUDIO_CHANNEL_6 2
209 #define MSM_HDMI_AUDIO_CHANNEL_8 3
210
211 #define HDMI_SAMPLE_RATE_32KHZ 0
212 #define HDMI_SAMPLE_RATE_44_1KHZ 1
213 #define HDMI_SAMPLE_RATE_48KHZ 2
214 #define HDMI_SAMPLE_RATE_88_2KHZ 3
215 #define HDMI_SAMPLE_RATE_96KHZ 4
216 #define HDMI_SAMPLE_RATE_176_4KHZ 5
217 #define HDMI_SAMPLE_RATE_192KHZ 6
218
219 int msm_hdmi_audio_update(struct hdmi *hdmi);
220 int msm_hdmi_audio_info_setup(struct hdmi *hdmi, bool enabled,
221 uint32_t num_of_channels, uint32_t channel_allocation,
222 uint32_t level_shift, bool down_mix);
223 void msm_hdmi_audio_set_sample_rate(struct hdmi *hdmi, int rate);
224
225
226 /*
227 * hdmi bridge:
228 */
229
230 struct drm_bridge *msm_hdmi_bridge_init(struct hdmi *hdmi);
231 void msm_hdmi_bridge_destroy(struct drm_bridge *bridge);
232
233 void msm_hdmi_hpd_irq(struct drm_bridge *bridge);
234 enum drm_connector_status msm_hdmi_bridge_detect(
235 struct drm_bridge *bridge);
236 int msm_hdmi_hpd_enable(struct drm_bridge *bridge);
237 void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge);
238
239 /*
240 * i2c adapter for ddc:
241 */
242
243 void msm_hdmi_i2c_irq(struct i2c_adapter *i2c);
244 void msm_hdmi_i2c_destroy(struct i2c_adapter *i2c);
245 struct i2c_adapter *msm_hdmi_i2c_init(struct hdmi *hdmi);
246
247 /*
248 * hdcp
249 */
250 #ifdef CONFIG_DRM_MSM_HDMI_HDCP
251 struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi);
252 void msm_hdmi_hdcp_destroy(struct hdmi *hdmi);
253 void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl);
254 void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl);
255 void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl);
256 #else
msm_hdmi_hdcp_init(struct hdmi * hdmi)257 static inline struct hdmi_hdcp_ctrl *msm_hdmi_hdcp_init(struct hdmi *hdmi)
258 {
259 return ERR_PTR(-ENXIO);
260 }
msm_hdmi_hdcp_destroy(struct hdmi * hdmi)261 static inline void msm_hdmi_hdcp_destroy(struct hdmi *hdmi) {}
msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl * hdcp_ctrl)262 static inline void msm_hdmi_hdcp_on(struct hdmi_hdcp_ctrl *hdcp_ctrl) {}
msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl * hdcp_ctrl)263 static inline void msm_hdmi_hdcp_off(struct hdmi_hdcp_ctrl *hdcp_ctrl) {}
msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl * hdcp_ctrl)264 static inline void msm_hdmi_hdcp_irq(struct hdmi_hdcp_ctrl *hdcp_ctrl) {}
265 #endif
266
267 #endif /* __HDMI_CONNECTOR_H__ */
268