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uapi: sound: add wcd-dsp-glink header file

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Add support for WCD-DSP audio codec communication over glink.
This file defines all the required structures for the userspace
component to communicate with the DSP in WCD audio codec.

CRs-Fixed: 1053381
Change-Id: I141a72c879b4c15590ad94c852a2771a360b55f9
Signed-off-by: Vidyakumar Athota <vathota@codeaurora.org>
This commit is contained in:
Vidyakumar Athota 2016-08-10 20:45:29 -07:00 • committed by Gerrit - the friendly Code Review server
parent 008f057bba
commit 99c16706c7
2 changed files with 59 additions and 0 deletions
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1
include/uapi/sound/Kbuild
View file

@ -18,3 +18,4 @@ header-y += audio_effects.h
header-y += voice_svc.h
header-y += devdep_params.h
header-y += msmcal-hwdep.h
header-y += wcd-dsp-glink.h

58
include/uapi/sound/wcd-dsp-glink.h Normal file
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@ -0,0 +1,58 @@
#ifndef _WCD_DSP_GLINK_H
#define _WCD_DSP_GLINK_H
#include <linux/types.h>
#define WDSP_CH_NAME_MAX_LEN 50
enum {
WDSP_REG_PKT = 1,
WDSP_CMD_PKT,
};
/*
* struct wdsp_reg_pkt - Glink channel information structure format
* @no_of_channels: Number of glink channels to open
* @payload[0]: Dynamic array contains all the glink channels information
*/
struct wdsp_reg_pkt {
__u8 no_of_channels;
__u8 payload[0];
};
/*
* struct wdsp_cmd_pkt - WDSP command packet format
* @ch_name: Name of the glink channel
* @payload_size: Size of the payload
* @payload[0]: Actual data payload
*/
struct wdsp_cmd_pkt {
char ch_name[WDSP_CH_NAME_MAX_LEN];
__u32 payload_size;
__u8 payload[0];
};
/*
* struct wdsp_write_pkt - Format that userspace send the data to driver.
* @pkt_type: Type of the packet(REG or CMD PKT)
* @payload[0]: Payload is either cmd or reg pkt structure based on pkt type
*/
struct wdsp_write_pkt {
__u8 pkt_type;
__u8 payload[0];
};
/*
* struct wdsp_glink_ch_cfg - Defines the glink channel configuration.
* @ch_name: Name of the glink channel
* @latency_in_us: Latency specified in micro seconds for QOS
* @no_of_intents: Number of intents prequeued
* @intents_size[0]: Dynamic array to specify size of each intent
*/
struct wdsp_glink_ch_cfg {
char name[WDSP_CH_NAME_MAX_LEN];
__u32 latency_in_us;
__u32 no_of_intents;
__u32 intents_size[0];
};
#endif /* _WCD_DSP_GLINK_H */