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replicant-device_samsung_ga.../yamaha-mc1n2-audio/yamaha-mc1n2-audio.c
Andrew Dodd cdc1a96ac0 mc1n2: Opensource audio HAL from Replicant 
Thanks to Paul Kocialkowski of the Replicant project for this work.

Original sources:
https://gitorious.org/replicant/hardware_tinyalsa-audio

http://git.paulk.fr/gitweb/?p=yamaha-mc1n2-audio.git;a=summary

Change-Id: Ia3d89c67d64decb56e3d6518c5f382d38e5a1fa9
2012-12-02 15:33:50 +01:00

675 lines
19 KiB
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/*
* Copyright (C) 2012 Paul Kocialkowski <contact@paulk.fr>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <linux/ioctl.h>
#define LOG_TAG "Yamaha-MC1N2-Audio"
#include <cutils/log.h>
#include <system/audio.h>
#include <yamaha-mc1n2-audio.h>
struct yamaha_mc1n2_audio_pdata *yamaha_mc1n2_audio_platforms[] = {
&galaxys2_pdata,
};
int yamaha_mc1n2_audio_platforms_count = sizeof(yamaha_mc1n2_audio_platforms) /
sizeof(struct yamaha_mc1n2_audio_pdata *);
/*
* IOCTL
*/
int yamaha_mc1n2_audio_ioctl(struct yamaha_mc1n2_audio_pdata *pdata,
int command, struct mc1n2_ctrl_args *hw_ctrl)
{
char *hw_node = NULL;
int hw_fd = -1;
int rc = -1;
if(pdata == NULL || pdata->ops == NULL)
return -1;
hw_node = pdata->ops->hw_node;
if(hw_node == NULL) {
ALOGE("%s: error, missing hw_node!", __func__);
return -1;
}
if(pdata->ops->hw_fd <= 0) {
hw_fd = open(hw_node, O_RDWR);
if(hw_fd < 0) {
ALOGE("%s: error, unable to open hw_node (fd is %d)!", __func__, hw_fd);
return -1;
}
pdata->ops->hw_fd = hw_fd;
}
rc = ioctl(pdata->ops->hw_fd, command, hw_ctrl);
if(rc < 0) {
ALOGE("%s: error, ioctl on hw_node failed (rc is %d)!", __func__, rc);
return -1;
}
return rc;
}
int yamaha_mc1n2_audio_ioctl_set_ctrl(struct yamaha_mc1n2_audio_pdata *pdata,
unsigned long command, void *data, unsigned long update_info)
{
struct mc1n2_ctrl_args hw_ctrl;
if(pdata == NULL)
return -1;
memset(&hw_ctrl, 0, sizeof(hw_ctrl));
hw_ctrl.dCmd = command;
hw_ctrl.pvPrm = data;
hw_ctrl.dPrm = update_info;
return yamaha_mc1n2_audio_ioctl(pdata, MC1N2_IOCTL_SET_CTRL, &hw_ctrl);
}
int yamaha_mc1n2_audio_ioctl_notify(struct yamaha_mc1n2_audio_pdata *pdata,
unsigned long command)
{
struct mc1n2_ctrl_args hw_ctrl;
if(pdata == NULL)
return -1;
memset(&hw_ctrl, 0, sizeof(hw_ctrl));
hw_ctrl.dCmd = command;
return yamaha_mc1n2_audio_ioctl(pdata, MC1N2_IOCTL_NOTIFY, &hw_ctrl);
}
/*
* Routines
*/
int yamaha_mc1n2_audio_init(struct yamaha_mc1n2_audio_pdata *pdata)
{
struct yamaha_mc1n2_audio_params_init *params = NULL;
int rc = -1;
if(pdata == NULL || pdata->ops == NULL)
return -1;
params = pdata->ops->params.init;
if(params == NULL)
return -1;
rc = yamaha_mc1n2_audio_ioctl_set_ctrl(pdata, MCDRV_SET_DAC,
&params->dac_info, 0x07);
if(rc < 0) {
ALOGE("SET_DAC IOCTL failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_set_ctrl(pdata, MCDRV_SET_ADC,
&params->adc_info, 0x07);
if(rc < 0) {
ALOGE("SET_ADC IOCTL failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_set_ctrl(pdata, MCDRV_SET_SP,
&params->sp_info, 0x00);
if(rc < 0) {
ALOGE("SET_SP IOCTL failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_set_ctrl(pdata, MCDRV_SET_PDM,
&params->pdm_info, 0x7f);
if(rc < 0) {
ALOGE("SET_PDM IOCTL failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_set_ctrl(pdata, MCDRV_SET_DNG,
&params->dng_info, 0x3f3f3f);
if(rc < 0) {
ALOGE("SET_DNG IOCTL failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_set_ctrl(pdata, MCDRV_SET_SYSEQ,
&params->syseq_info, 0x03);
if(rc < 0) {
ALOGE("SET_SYSEQ IOCTL failed, aborting!");
return -1;
}
return 0;
}
struct yamaha_mc1n2_audio_params_route *
yamaha_mc1n2_audio_params_route_find(struct yamaha_mc1n2_audio_pdata *pdata,
audio_devices_t device, enum yamaha_mc1n2_audio_direction direction)
{
struct yamaha_mc1n2_audio_params_route *params = NULL;
int params_count = 0;
int i;
if(pdata == NULL || pdata->ops == NULL)
return NULL;
ALOGD("(%s): device = %d, direction = %d",__func__,device,direction);
params = pdata->ops->params.routes;
params_count = pdata->ops->params.routes_count;
if(params == NULL || params_count <= 0)
return NULL;
for(i=0 ; i < params_count ; i++) {
if(params[i].device == device && params[i].direction == direction)
return &params[i];
}
return NULL;
}
int yamaha_mc1n2_audio_params_route_simple_array_merge(int length,
unsigned char *array_src, unsigned char *array_dst)
{
int i;
if(length <= 0 || array_src == NULL || array_dst == NULL)
return -1;
for(i=0 ; i < length ; i++) {
if(array_dst[i] == 0)
array_dst[i] = array_src[i];
}
return 0;
}
int yamaha_mc1n2_audio_params_route_path_array_merge(int length,
unsigned char *array_src, unsigned char *array_dst)
{
int i, j;
unsigned char v;
if(length <= 0 || array_src == NULL || array_dst == NULL)
return -1;
for(i=0 ; i < length ; i++) {
if(array_dst[i] == 0) {
array_dst[i] = array_src[i];
} else {
v = array_src[i];
for(j=0; j < 8 ; j++) {
if((1 << j) & array_dst[i]) {
if(j % 2 == 0)
v &= ~(1 << (j+1));
else
v &= ~(1 << (j-1));
v |= (1 << j);
}
}
array_dst[i] = v;
}
}
return 0;
}
int yamaha_mc1n2_audio_params_route_merge(
struct yamaha_mc1n2_audio_params_route *params_src,
struct yamaha_mc1n2_audio_params_route *params_dst)
{
if(params_src == NULL || params_dst == NULL)
return -1;
// ae_info
yamaha_mc1n2_audio_params_route_simple_array_merge(sizeof(params_src->ae_info.bOnOff),
&params_src->ae_info.bOnOff, &params_dst->ae_info.bOnOff);
yamaha_mc1n2_audio_params_route_simple_array_merge(sizeof(params_src->ae_info.abBex),
params_src->ae_info.abBex, params_dst->ae_info.abBex);
yamaha_mc1n2_audio_params_route_simple_array_merge(sizeof(params_src->ae_info.abWide),
params_src->ae_info.abWide, params_dst->ae_info.abWide);
yamaha_mc1n2_audio_params_route_simple_array_merge(sizeof(params_src->ae_info.abDrc),
params_src->ae_info.abDrc, params_dst->ae_info.abDrc);
yamaha_mc1n2_audio_params_route_simple_array_merge(sizeof(params_src->ae_info.abEq5),
params_src->ae_info.abEq5, params_dst->ae_info.abEq5);
yamaha_mc1n2_audio_params_route_simple_array_merge(sizeof(params_src->ae_info.abEq3),
params_src->ae_info.abEq3, params_dst->ae_info.abEq3);
// path_info
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asHpOut[0].abSrcOnOff),
params_src->path_info.asHpOut[0].abSrcOnOff, params_dst->path_info.asHpOut[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asHpOut[1].abSrcOnOff),
params_src->path_info.asHpOut[1].abSrcOnOff, params_dst->path_info.asHpOut[1].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asSpOut[0].abSrcOnOff),
params_src->path_info.asSpOut[0].abSrcOnOff, params_dst->path_info.asSpOut[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asSpOut[1].abSrcOnOff),
params_src->path_info.asSpOut[1].abSrcOnOff, params_dst->path_info.asSpOut[1].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asRcOut[0].abSrcOnOff),
params_src->path_info.asRcOut[0].abSrcOnOff, params_dst->path_info.asRcOut[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asLout1[0].abSrcOnOff),
params_src->path_info.asLout1[0].abSrcOnOff, params_dst->path_info.asLout1[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asLout1[1].abSrcOnOff),
params_src->path_info.asLout1[1].abSrcOnOff, params_dst->path_info.asLout1[1].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asLout2[0].abSrcOnOff),
params_src->path_info.asLout2[0].abSrcOnOff, params_dst->path_info.asLout2[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asLout2[1].abSrcOnOff),
params_src->path_info.asLout2[1].abSrcOnOff, params_dst->path_info.asLout2[1].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asPeak[0].abSrcOnOff),
params_src->path_info.asPeak[0].abSrcOnOff, params_dst->path_info.asPeak[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asDit0[0].abSrcOnOff),
params_src->path_info.asDit0[0].abSrcOnOff, params_dst->path_info.asDit0[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asDit1[0].abSrcOnOff),
params_src->path_info.asDit1[0].abSrcOnOff, params_dst->path_info.asDit1[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asDit2[0].abSrcOnOff),
params_src->path_info.asDit2[0].abSrcOnOff, params_dst->path_info.asDit2[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asDac[0].abSrcOnOff),
params_src->path_info.asDac[0].abSrcOnOff, params_dst->path_info.asDac[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asDac[1].abSrcOnOff),
params_src->path_info.asDac[1].abSrcOnOff, params_dst->path_info.asDac[1].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asAe[0].abSrcOnOff),
params_src->path_info.asAe[0].abSrcOnOff, params_dst->path_info.asAe[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asCdsp[0].abSrcOnOff),
params_src->path_info.asCdsp[0].abSrcOnOff, params_dst->path_info.asCdsp[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asCdsp[1].abSrcOnOff),
params_src->path_info.asCdsp[1].abSrcOnOff, params_dst->path_info.asCdsp[1].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asCdsp[2].abSrcOnOff),
params_src->path_info.asCdsp[2].abSrcOnOff, params_dst->path_info.asCdsp[2].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asCdsp[3].abSrcOnOff),
params_src->path_info.asCdsp[3].abSrcOnOff, params_dst->path_info.asCdsp[3].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asAdc0[0].abSrcOnOff),
params_src->path_info.asAdc0[0].abSrcOnOff, params_dst->path_info.asAdc0[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asAdc0[1].abSrcOnOff),
params_src->path_info.asAdc0[1].abSrcOnOff, params_dst->path_info.asAdc0[1].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asAdc1[0].abSrcOnOff),
params_src->path_info.asAdc1[0].abSrcOnOff, params_dst->path_info.asAdc1[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asMix[0].abSrcOnOff),
params_src->path_info.asMix[0].abSrcOnOff, params_dst->path_info.asMix[0].abSrcOnOff);
yamaha_mc1n2_audio_params_route_path_array_merge(sizeof(params_src->path_info.asBias[0].abSrcOnOff),
params_src->path_info.asBias[0].abSrcOnOff, params_dst->path_info.asBias[0].abSrcOnOff);
// dac_info
yamaha_mc1n2_audio_params_route_simple_array_merge(sizeof(params_src->dac_info.bMasterSwap),
&params_src->dac_info.bMasterSwap, &params_dst->dac_info.bMasterSwap);
yamaha_mc1n2_audio_params_route_simple_array_merge(sizeof(params_src->dac_info.bVoiceSwap),
&params_src->dac_info.bVoiceSwap, &params_dst->dac_info.bVoiceSwap);
yamaha_mc1n2_audio_params_route_simple_array_merge(sizeof(params_src->dac_info.bDcCut),
&params_src->dac_info.bDcCut, &params_dst->dac_info.bDcCut);
return 0;
}
int yamaha_mc1n2_audio_route_start(struct yamaha_mc1n2_audio_pdata *pdata)
{
struct yamaha_mc1n2_audio_params_route *params_route = NULL;
struct yamaha_mc1n2_audio_params_init *params_init = NULL;
struct yamaha_mc1n2_audio_params_route *params = NULL;
struct yamaha_mc1n2_audio_params_route params_src;
struct yamaha_mc1n2_audio_params_route params_dst;
int rc;
ALOGD("%s()", __func__);
if(pdata == NULL || pdata->ops == NULL)
return -1;
params_init = pdata->ops->params.init;
if(params_init == NULL)
return -1;
// Copy the init params
memcpy(&params_src.ae_info, &params_init->ae_info, sizeof(params_src.ae_info));
memcpy(&params_src.path_info, &params_init->path_info, sizeof(params_src.path_info));
memcpy(&params_src.dac_info, &params_init->dac_info, sizeof(params_src.dac_info));
output_merge:
if(pdata->output_state) {
params_route = yamaha_mc1n2_audio_params_route_find(pdata,
pdata->output_device, YAMAHA_MC1N2_AUDIO_DIRECTION_OUTPUT);
if(params_route == NULL)
goto input_merge;
memcpy(&params_dst, params_route, sizeof(params_dst));
yamaha_mc1n2_audio_params_route_merge(&params_src, &params_dst);
memcpy(&params_src, &params_dst, sizeof(params_src));
}
input_merge:
if(pdata->input_state) {
params_route = yamaha_mc1n2_audio_params_route_find(pdata,
pdata->input_device, YAMAHA_MC1N2_AUDIO_DIRECTION_INPUT);
if(params_route == NULL)
goto modem_merge;
memcpy(&params_dst, params_route, sizeof(params_dst));
yamaha_mc1n2_audio_params_route_merge(&params_src, &params_dst);
memcpy(&params_src, &params_dst, sizeof(params_src));
}
modem_merge:
if(pdata->modem_state) {
params_route = yamaha_mc1n2_audio_params_route_find(pdata,
pdata->output_device, YAMAHA_MC1N2_AUDIO_DIRECTION_MODEM);
if(params_route == NULL)
goto route_start;
memcpy(&params_dst, params_route, sizeof(params_dst));
yamaha_mc1n2_audio_params_route_merge(&params_src, &params_dst);
memcpy(&params_src, &params_dst, sizeof(params_src));
}
route_start:
params = &(params_src);
rc = yamaha_mc1n2_audio_ioctl_set_ctrl(pdata, MCDRV_SET_AUDIOENGINE,
&params->ae_info, 0x0f);
if(rc < 0) {
ALOGE("SET_AUDIOENGINE IOCTL failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_set_ctrl(pdata, MCDRV_SET_PATH,
&params->path_info, 0x00);
if(rc < 0) {
ALOGE("SET_PATH IOCTL failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_set_ctrl(pdata, MCDRV_SET_DAC,
&params->dac_info, 0x07);
if(rc < 0) {
ALOGE("SET_DAC IOCTL failed, aborting!");
return -1;
}
return 0;
}
int yamaha_mc1n2_audio_output_start(struct yamaha_mc1n2_audio_pdata *pdata)
{
int rc;
ALOGD("%s()", __func__);
if(pdata == NULL || pdata->ops == NULL)
return -1;
pdata->output_state = 1;
rc = yamaha_mc1n2_audio_route_start(pdata);
if(rc < 0) {
ALOGE("Route start failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_notify(pdata, MCDRV_NOTIFY_MEDIA_PLAY_START);
if(rc < 0) {
ALOGE("NOTIFY_MEDIA_PLAY_START IOCTL failed, aborting!");
return -1;
}
return 0;
}
int yamaha_mc1n2_audio_output_stop(struct yamaha_mc1n2_audio_pdata *pdata)
{
int rc;
ALOGD("%s()", __func__);
if(pdata == NULL || pdata->ops == NULL)
return -1;
pdata->output_state = 0;
rc = yamaha_mc1n2_audio_route_start(pdata);
if(rc < 0) {
ALOGE("Route start failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_notify(pdata, MCDRV_NOTIFY_MEDIA_PLAY_STOP);
if(rc < 0) {
ALOGE("NOTIFY_MEDIA_PLAY_STOP IOCTL failed, aborting!");
return -1;
}
return 0;
}
int yamaha_mc1n2_audio_input_start(struct yamaha_mc1n2_audio_pdata *pdata)
{
int rc;
ALOGD("%s()", __func__);
if(pdata == NULL || pdata->ops == NULL)
return -1;
pdata->input_state = 1;
rc = yamaha_mc1n2_audio_route_start(pdata);
if(rc < 0) {
ALOGE("Route start failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_notify(pdata, MCDRV_NOTIFY_VOICE_REC_START);
if(rc < 0) {
ALOGE("NOTIFY_VOICE_REC_START IOCTL failed, aborting!");
return -1;
}
return 0;
}
int yamaha_mc1n2_audio_input_stop(struct yamaha_mc1n2_audio_pdata *pdata)
{
int rc;
ALOGD("%s()", __func__);
if(pdata == NULL || pdata->ops == NULL)
return -1;
pdata->input_state = 0;
rc = yamaha_mc1n2_audio_route_start(pdata);
if(rc < 0) {
ALOGE("Route start failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_notify(pdata, MCDRV_NOTIFY_VOICE_REC_STOP);
if(rc < 0) {
ALOGE("NOTIFY_VOICE_REC_START IOCTL failed, aborting!");
return -1;
}
return 0;
}
int yamaha_mc1n2_audio_modem_start(struct yamaha_mc1n2_audio_pdata *pdata)
{
int rc;
ALOGD("%s()", __func__);
if(pdata == NULL || pdata->ops == NULL)
return -1;
pdata->modem_state = 1;
rc = yamaha_mc1n2_audio_route_start(pdata);
if(rc < 0) {
ALOGE("Route start failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_notify(pdata, MCDRV_NOTIFY_CALL_START);
if(rc < 0) {
ALOGE("NOTIFY_CALL_START IOCTL failed, aborting!");
return -1;
}
return 0;
}
int yamaha_mc1n2_audio_modem_stop(struct yamaha_mc1n2_audio_pdata *pdata)
{
int rc;
ALOGD("%s()", __func__);
if(pdata == NULL || pdata->ops == NULL)
return -1;
pdata->modem_state = 0;
rc = yamaha_mc1n2_audio_route_start(pdata);
if(rc < 0) {
ALOGE("Route start failed, aborting!");
return -1;
}
rc = yamaha_mc1n2_audio_ioctl_notify(pdata, MCDRV_NOTIFY_CALL_STOP);
if(rc < 0) {
ALOGE("NOTIFY_CALL_START IOCTL failed, aborting!");
return -1;
}
return 0;
}
/*
* Values configuration
*/
int yamaha_mc1n2_audio_set_route(struct yamaha_mc1n2_audio_pdata *pdata,
audio_devices_t device)
{
int changed = 0;
ALOGD("%s(%x)", __func__, device);
if(pdata == NULL)
return -1;
if(audio_is_output_device(device) && pdata->output_device != device) {
pdata->output_device = device;
changed = 1;
} else if(audio_is_input_device(device) && pdata->input_device != device) {
pdata->input_device = device;
changed = 1;
}
if(changed && (pdata->output_state || pdata->input_state || pdata->modem_state))
return yamaha_mc1n2_audio_route_start(pdata);
return 0;
}
char *yamaha_mc1n2_audio_get_hw_node(struct yamaha_mc1n2_audio_pdata *pdata)
{
if(pdata == NULL)
return NULL;
return pdata->ops->hw_node;
}
/*
* Init/Deinit
*/
struct yamaha_mc1n2_audio_pdata *yamaha_mc1n2_audio_platform_get(
char *device_name)
{
int i;
if(device_name == NULL)
return NULL;
ALOGD("Found %d registered platforms",
yamaha_mc1n2_audio_platforms_count);
for(i=0 ; i < yamaha_mc1n2_audio_platforms_count ; i++) {
if(yamaha_mc1n2_audio_platforms[i] != NULL &&
yamaha_mc1n2_audio_platforms[i]->name != NULL) {
if(strcmp(yamaha_mc1n2_audio_platforms[i]->name, device_name) == 0) {
return yamaha_mc1n2_audio_platforms[i];
}
}
}
return NULL;
}
int yamaha_mc1n2_audio_start(struct yamaha_mc1n2_audio_pdata **pdata_p,
char *device_name)
{
struct yamaha_mc1n2_audio_pdata *pdata = NULL;
int rc;
ALOGD("%s(%s)", __func__, device_name);
if(pdata_p == NULL || device_name == NULL)
return -1;
pdata = yamaha_mc1n2_audio_platform_get(device_name);
if(pdata == NULL || pdata->ops == NULL) {
ALOGE("Unable to find requested platform: %s", device_name);
return -1;
}
pdata->ops->hw_fd = -1;
*pdata_p = pdata;
return 0;
}
int yamaha_mc1n2_audio_stop(struct yamaha_mc1n2_audio_pdata *pdata)
{
ALOGD("%s()", __func__);
if(pdata == NULL || pdata->ops == NULL)
return -1;
if(pdata->ops->hw_fd >= 0) {
close(pdata->ops->hw_fd);
}
return 0;
}
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