5 #ifndef __SOUND_HDAUDIO_H
6 #define __SOUND_HDAUDIO_H
8 #include <linux/device.h>
9 #include <sound/hda_verbs.h>
12 typedef u16 hda_nid_t;
17 struct hdac_widget_tree;
22 extern struct bus_type snd_hda_bus_type;
25 * HD-audio codec base device
31 unsigned int addr; /* codec address */
32 struct list_head list; /* list point for bus codec_list */
34 hda_nid_t afg; /* AFG node id */
35 hda_nid_t mfg; /* MFG node id */
38 unsigned int vendor_id;
39 unsigned int subsystem_id;
40 unsigned int revision_id;
41 unsigned int afg_function_id;
42 unsigned int mfg_function_id;
43 unsigned int afg_unsol:1;
44 unsigned int mfg_unsol:1;
46 unsigned int power_caps; /* FG power caps */
48 const char *vendor_name; /* codec vendor name */
49 const char *chip_name; /* codec chip name */
52 unsigned int num_nodes;
53 hda_nid_t start_nid, end_nid;
56 atomic_t in_pm; /* suspend/resume being performed */
59 struct hdac_widget_tree *widgets;
62 /* device/driver type used for matching */
73 #define dev_to_hdac_dev(_dev) container_of(_dev, struct hdac_device, dev)
75 int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus,
76 const char *name, unsigned int addr);
77 void snd_hdac_device_exit(struct hdac_device *dev);
78 int snd_hdac_device_register(struct hdac_device *codec);
79 void snd_hdac_device_unregister(struct hdac_device *codec);
81 int snd_hdac_refresh_widgets(struct hdac_device *codec);
83 unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
84 unsigned int verb, unsigned int parm);
85 int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
86 unsigned int verb, unsigned int parm, unsigned int *res);
87 int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm);
88 int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
89 hda_nid_t *conn_list, int max_conns);
90 int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
94 void snd_hdac_power_up(struct hdac_device *codec);
95 void snd_hdac_power_down(struct hdac_device *codec);
97 static inline void snd_hdac_power_up(struct hdac_device *codec) {}
98 static inline void snd_hdac_power_down(struct hdac_device *codec) {}
102 * HD-audio codec base driver
105 struct device_driver driver;
107 int (*match)(struct hdac_device *dev, struct hdac_driver *drv);
108 void (*unsol_event)(struct hdac_device *dev, unsigned int event);
111 #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)
114 * HD-audio bus base driver
116 struct hdac_bus_ops {
117 /* send a single command */
118 int (*command)(struct hdac_bus *bus, unsigned int cmd);
119 /* get a response from the last command */
120 int (*get_response)(struct hdac_bus *bus, unsigned int addr,
124 #define HDA_UNSOL_QUEUE_SIZE 64
128 const struct hdac_bus_ops *ops;
130 /* codec linked list */
131 struct list_head codec_list;
132 unsigned int num_codecs;
134 /* link caddr -> codec */
135 struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];
137 /* unsolicited event queue */
138 u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */
139 unsigned int unsol_rp, unsol_wp;
140 struct work_struct unsol_work;
142 /* bit flags of powered codecs */
143 unsigned long codec_powered;
146 bool sync_write:1; /* sync after verb write */
149 struct mutex cmd_mutex;
152 int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
153 const struct hdac_bus_ops *ops);
154 void snd_hdac_bus_exit(struct hdac_bus *bus);
155 int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
156 unsigned int cmd, unsigned int *res);
157 int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
158 unsigned int cmd, unsigned int *res);
159 void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);
161 int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
162 void snd_hdac_bus_remove_device(struct hdac_bus *bus,
163 struct hdac_device *codec);
165 static inline void snd_hdac_codec_link_up(struct hdac_device *codec)
167 set_bit(codec->addr, &codec->bus->codec_powered);
170 static inline void snd_hdac_codec_link_down(struct hdac_device *codec)
172 clear_bit(codec->addr, &codec->bus->codec_powered);
175 #endif /* __SOUND_HDAUDIO_H */