ALSA: hda - add HDA default codec match function

HDA codec drivers can be matched using vendor id and revision id typically.
So provide a match function which does this and is loaded when driver hasn't
provided one (default behaviour)

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 14 insertions, 0 deletions

diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 64fff4db81bb..4caf1fde8a4f 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -28,6 +28,16 @@ struct hdac_widget_tree;
 extern struct bus_type snd_hda_bus_type;
 
 /*
+ * HDA device table
+ */
+struct hda_device_id {
+        __u32 vendor_id;
+        __u32 rev_id;
+        const char *name;
+        unsigned long driver_data;
+};
+
+/*
  * generic arrays
  */
 struct snd_array {
@@ -171,12 +181,16 @@ static inline void snd_hdac_power_down_pm(struct hdac_device *codec) {}
 struct hdac_driver {
         struct device_driver driver;
         int type;
+        const struct hda_device_id *id_table;
         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)
 
+const struct hda_device_id *
+hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv);
+
 /*
  * Bus verb operators
  */