ALSA: hda - allow a codec to control the link power

[firefly-linux-kernel-4.4.55.git] / include / sound / hdaudio.h

diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 6a2e030c836c8e7c957b99d85ce70631ba04e1a9..b97c59eab7ab383472461dbf4048f2387f019ca2 100644 (file)
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -74,6 +74,7 @@ struct hdac_device {
 
        /* misc flags */
        atomic_t in_pm;         /* suspend/resume being performed */
+       bool  link_power_control:1;
 
        /* sysfs */
        struct hdac_widget_tree *widgets;
@@ -184,6 +185,8 @@ struct hdac_bus_ops {
        /* get a response from the last command */
        int (*get_response)(struct hdac_bus *bus, unsigned int addr,
                            unsigned int *res);
+       /* control the link power  */
+       int (*link_power)(struct hdac_bus *bus, bool enable);
 };
 
 /*
@@ -311,6 +314,7 @@ static inline void snd_hdac_codec_link_down(struct hdac_device *codec)
 int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val);
 int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,
                              unsigned int *res);
+int snd_hdac_link_power(struct hdac_device *codec, bool enable);
 
 bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset);
 void snd_hdac_bus_stop_chip(struct hdac_bus *bus);