--- /dev/null
+/*
+ * HD-audio core stuff
+ */
+
+#ifndef __SOUND_HDAUDIO_H
+#define __SOUND_HDAUDIO_H
+
+#include <linux/device.h>
+#include <sound/hda_verbs.h>
+
+/* codec node id */
+typedef u16 hda_nid_t;
+
+struct hdac_bus;
+struct hdac_device;
+struct hdac_driver;
+struct hdac_widget_tree;
+
+/*
+ * exported bus type
+ */
+extern struct bus_type snd_hda_bus_type;
+
+/*
+ * generic arrays
+ */
+struct snd_array {
+ unsigned int used;
+ unsigned int alloced;
+ unsigned int elem_size;
+ unsigned int alloc_align;
+ void *list;
+};
+
+/*
+ * HD-audio codec base device
+ */
+struct hdac_device {
+ struct device dev;
+ int type;
+ struct hdac_bus *bus;
+ unsigned int addr; /* codec address */
+ struct list_head list; /* list point for bus codec_list */
+
+ hda_nid_t afg; /* AFG node id */
+ hda_nid_t mfg; /* MFG node id */
+
+ /* ids */
+ unsigned int vendor_id;
+ unsigned int subsystem_id;
+ unsigned int revision_id;
+ unsigned int afg_function_id;
+ unsigned int mfg_function_id;
+ unsigned int afg_unsol:1;
+ unsigned int mfg_unsol:1;
+
+ unsigned int power_caps; /* FG power caps */
+
+ const char *vendor_name; /* codec vendor name */
+ const char *chip_name; /* codec chip name */
+
+ /* verb exec op override */
+ int (*exec_verb)(struct hdac_device *dev, unsigned int cmd,
+ unsigned int flags, unsigned int *res);
+
+ /* widgets */
+ unsigned int num_nodes;
+ hda_nid_t start_nid, end_nid;
+
+ /* misc flags */
+ atomic_t in_pm; /* suspend/resume being performed */
+
+ /* sysfs */
+ struct hdac_widget_tree *widgets;
+
+ /* regmap */
+ struct regmap *regmap;
+ struct snd_array vendor_verbs;
+ bool lazy_cache:1; /* don't wake up for writes */
+ bool caps_overwriting:1; /* caps overwrite being in process */
+ bool cache_coef:1; /* cache COEF read/write too */
+};
+
+/* device/driver type used for matching */
+enum {
+ HDA_DEV_CORE,
+ HDA_DEV_LEGACY,
+};
+
+/* direction */
+enum {
+ HDA_INPUT, HDA_OUTPUT
+};
+
+#define dev_to_hdac_dev(_dev) container_of(_dev, struct hdac_device, dev)
+
+int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus,
+ const char *name, unsigned int addr);
+void snd_hdac_device_exit(struct hdac_device *dev);
+int snd_hdac_device_register(struct hdac_device *codec);
+void snd_hdac_device_unregister(struct hdac_device *codec);
+
+int snd_hdac_refresh_widgets(struct hdac_device *codec);
+
+unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
+ unsigned int verb, unsigned int parm);
+int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
+ unsigned int flags, unsigned int *res);
+int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
+ unsigned int verb, unsigned int parm, unsigned int *res);
+int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
+ unsigned int *res);
+int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
+ int parm);
+int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
+ unsigned int parm, unsigned int val);
+int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
+ hda_nid_t *conn_list, int max_conns);
+int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
+ hda_nid_t *start_id);
+
+/**
+ * snd_hdac_read_parm - read a codec parameter
+ * @codec: the codec object
+ * @nid: NID to read a parameter
+ * @parm: parameter to read
+ *
+ * Returns -1 for error. If you need to distinguish the error more
+ * strictly, use _snd_hdac_read_parm() directly.
+ */
+static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
+ int parm)
+{
+ unsigned int val;
+
+ return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val;
+}
+
+#ifdef CONFIG_PM
+void snd_hdac_power_up(struct hdac_device *codec);
+void snd_hdac_power_down(struct hdac_device *codec);
+void snd_hdac_power_up_pm(struct hdac_device *codec);
+void snd_hdac_power_down_pm(struct hdac_device *codec);
+#else
+static inline void snd_hdac_power_up(struct hdac_device *codec) {}
+static inline void snd_hdac_power_down(struct hdac_device *codec) {}
+static inline void snd_hdac_power_up_pm(struct hdac_device *codec) {}
+static inline void snd_hdac_power_down_pm(struct hdac_device *codec) {}
+#endif
+
+/*
+ * HD-audio codec base driver
+ */
+struct hdac_driver {
+ struct device_driver driver;
+ int type;
+ int (*match)(struct hdac_device *dev, struct hdac_driver *drv);
+ void (*unsol_event)(struct hdac_device *dev, unsigned int event);
+};
+
+#define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)
+
+/*
+ * HD-audio bus base driver
+ */
+struct hdac_bus_ops {
+ /* send a single command */
+ int (*command)(struct hdac_bus *bus, unsigned int cmd);
+ /* get a response from the last command */
+ int (*get_response)(struct hdac_bus *bus, unsigned int addr,
+ unsigned int *res);
+};
+
+#define HDA_UNSOL_QUEUE_SIZE 64
+
+struct hdac_bus {
+ struct device *dev;
+ const struct hdac_bus_ops *ops;
+
+ /* codec linked list */
+ struct list_head codec_list;
+ unsigned int num_codecs;
+
+ /* link caddr -> codec */
+ struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];
+
+ /* unsolicited event queue */
+ u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */
+ unsigned int unsol_rp, unsol_wp;
+ struct work_struct unsol_work;
+
+ /* bit flags of powered codecs */
+ unsigned long codec_powered;
+
+ /* flags */
+ bool sync_write:1; /* sync after verb write */
+
+ /* locks */
+ struct mutex cmd_mutex;
+};
+
+int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
+ const struct hdac_bus_ops *ops);
+void snd_hdac_bus_exit(struct hdac_bus *bus);
+int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
+ unsigned int cmd, unsigned int *res);
+int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
+ unsigned int cmd, unsigned int *res);
+void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);
+
+int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
+void snd_hdac_bus_remove_device(struct hdac_bus *bus,
+ struct hdac_device *codec);
+
+static inline void snd_hdac_codec_link_up(struct hdac_device *codec)
+{
+ set_bit(codec->addr, &codec->bus->codec_powered);
+}
+
+static inline void snd_hdac_codec_link_down(struct hdac_device *codec)
+{
+ clear_bit(codec->addr, &codec->bus->codec_powered);
+}
+
+/*
+ * generic array helpers
+ */
+void *snd_array_new(struct snd_array *array);
+void snd_array_free(struct snd_array *array);
+static inline void snd_array_init(struct snd_array *array, unsigned int size,
+ unsigned int align)
+{
+ array->elem_size = size;
+ array->alloc_align = align;
+}
+
+static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
+{
+ return array->list + idx * array->elem_size;
+}
+
+static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
+{
+ return (unsigned long)(ptr - array->list) / array->elem_size;
+}
+
+#endif /* __SOUND_HDAUDIO_H */
Code Review / kvmfornfv.git / blobdiff