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Commit da769ef1 authored by Meng Wang's avatar Meng Wang
Browse files

Asoc: Add audio backend to hwdep interface 



Add audio backend to hwdep interface. This is to provide
ioctl interface to communicate to routing driver.
Currently codec driver uses request_firmware to get calibration data
but as this firmware file is also written by userspace process after
bootup, it is not recommended to use request_firmware. ALSA core
provides mechanism to get hardware dependent data using hwdep nodes.
Codec will use aforementioned nodes to get calibration data from
userspace.
This commit adds hwdep interface for codec calibration.

Change-Id: I7ecdcdb3c16b0b4d232e05f17f44b346ac796fd2
Signed-off-by: default avatarSubhash Chandra Bose Naripeddy <snariped@codeaurora.org>
Signed-off-by: default avatarKrishnankutty Kolathappilly <kkolat@codeaurora.org>
Signed-off-by: default avatarBanajit Goswami <bgoswami@codeaurora.org>
Signed-off-by: default avatarSudheer Papothi <spapothi@codeaurora.org>
Signed-off-by: default avatarMeng Wang <mengw@codeaurora.org>
parent a70116e1

include/uapi/sound/asound.h

+2 −0
Original line number Diff line number Diff line
@@ -112,6 +112,7 @@ enum { 
	SNDRV_HWDEP_IFACE_FW_MOTU,	/* MOTU FireWire series */

	SNDRV_HWDEP_IFACE_FW_FIREFACE,	/* RME Fireface series */

#ifdef CONFIG_AUDIO_QGKI

	SNDRV_HWDEP_IFACE_AUDIO_BE,	/* Backend Audio Control */

	SNDRV_HWDEP_IFACE_AUDIO_CODEC,  /* codec Audio Control */



	/* Don't forget to change the following: */
@@ -122,6 +123,7 @@ enum { 
};



#ifdef CONFIG_AUDIO_QGKI

#define SNDRV_HWDEP_IFACE_AUDIO_BE SNDRV_HWDEP_IFACE_AUDIO_BE

#define SNDRV_HWDEP_IFACE_AUDIO_CODEC SNDRV_HWDEP_IFACE_AUDIO_CODEC

#endif