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Commit f44af122 authored by Dhanalakshmi Siddani's avatar Dhanalakshmi Siddani Committed by Gerrit - the friendly Code Review server
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audio: HAL to support for peripheral manager 

- Peripheral manager takes care of modem/adsp image loading/unloading

- Add support to register with PM and call subsystem_put to unload
  modem/adsp image to transfer the control to PM

Change-Id: I6fccff8821f737790f040751aaa03584006a23a1
parent 7ac445ae

hal/Android.mk

+7 −0
Original line number Diff line number Diff line
@@ -186,6 +186,13 @@ ifeq ($(strip $(AUDIO_FEATURE_ENABLED_AUXPCM_BT)),true) 
    LOCAL_CFLAGS += -DAUXPCM_BT_ENABLED

endif



ifeq ($(strip $(AUDIO_FEATURE_ENABLED_PM_SUPPORT)),true)

    LOCAL_CFLAGS += -DPM_SUPPORT_ENABLED

    LOCAL_SRC_FILES += audio_extn/pm.c

    LOCAL_C_INCLUDES += $(TARGET_OUT_HEADERS)/libperipheralclient/inc

    LOCAL_SHARED_LIBRARIES += libperipheral_client

endif



LOCAL_COPY_HEADERS_TO   := mm-audio

LOCAL_COPY_HEADERS      := audio_extn/audio_defs.h

hal/audio_extn/audio_extn.c

+1 −0
Original line number Diff line number Diff line
@@ -462,6 +462,7 @@ void audio_extn_set_parameters(struct audio_device *adev, 
   audio_extn_hfp_set_parameters(adev, parms);

   audio_extn_ddp_set_parameters(adev, parms);

   audio_extn_customstereo_set_parameters(adev, parms);

   audio_extn_pm_set_parameters(parms);

}



void audio_extn_get_parameters(const struct audio_device *adev,

hal/audio_extn/audio_extn.h

+10 −0
Original line number Diff line number Diff line
@@ -300,6 +300,16 @@ int audio_extn_dev_arbi_acquire(snd_device_t snd_device); 
int audio_extn_dev_arbi_release(snd_device_t snd_device);

#endif



#ifndef PM_SUPPORT_ENABLED

#define audio_extn_pm_set_parameters(params) (0)

#define audio_extn_pm_vote(void) (0)

#define audio_extn_pm_unvote(void) (0)

#else

void audio_extn_pm_set_parameters(struct str_parms *parms);

int audio_extn_pm_vote (void);

void audio_extn_pm_unvote(void);

#endif



void audio_extn_utils_update_streams_output_cfg_list(void *platform,

                                  struct mixer *mixer,

                                  struct listnode *streams_output_cfg_list);

hal/audio_extn/pm.c

0 → 100644
+149 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2014, The Linux Foundation. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 *       copyright notice, this list of conditions and the following

 *       disclaimer in the documentation and/or other materials provided

 *       with the distribution.

 *     * Neither the name of The Linux Foundation nor the names of its

 *       contributors may be used to endorse or promote products derived

 *       from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED

 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS

 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR

 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE

 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN

 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 */



#define LOG_TAG "audio_hw_pm"

/*#define LOG_NDEBUG 0*/



#include "pm.h"

#include <cutils/log.h>



static s_audio_subsys audio_ss;



int audio_extn_pm_vote(void)

{

    int err, intfd, ret;

    FILE *fd;

    enum pm_event subsys_state;

    char halPropVal[PROPERTY_VALUE_MAX];

    bool prop_unload_image = false;

    bool pm_reg = false;

    bool pm_supp = false;



    platform_get_subsys_image_name((char *)&audio_ss.img_name);

    ALOGD("%s: register with peripheral manager for %s",__func__, audio_ss.img_name);

    ret = pm_client_register(audio_extn_pm_event_notifier,

                      &audio_ss,

                      audio_ss.img_name,

                      PM_CLIENT_NAME,

                      &subsys_state,

                      &audio_ss.pm_handle);

    if (ret == PM_RET_SUCCESS) {

        pm_reg = true;

        pm_supp = true;

        ALOGV("%s: registered with peripheral manager for %s",

                  __func__, audio_ss.img_name);

    } else if (ret == PM_RET_UNSUPPORTED) {

        pm_reg = true;

        pm_supp = false;

        ALOGV("%s: peripheral mgr unsupported for %s",

              __func__, audio_ss.img_name);

        return ret;

    } else {

       return ret;

    }

    if (pm_supp == true &&

       pm_reg == true) {

       ALOGD("%s: Voting for subsystem power up", __func__);

       pm_client_connect(audio_ss.pm_handle);



       if (property_get("sys.audio.init", halPropVal, NULL)) {

           prop_unload_image = !(strncmp("false", halPropVal, sizeof("false")));

       }

       /*

        * adsp-loader loads modem/adsp image at boot up to play boot tone,

        * before peripheral manager service is up. Once PM is up, vote to PM

        * and unload the image to give control to PM to load/unload image

        */

       if (prop_unload_image) {

           intfd = open(BOOT_IMG_SYSFS_PATH, O_WRONLY);

           if (intfd == -1) {

               ALOGE("failed to open fd in write mode, %d", errno);

           } else {

               ALOGD("%s: write to sysfs to unload image", __func__);

               err = write(intfd, UNLOAD_IMAGE, 1);

               close(intfd);

               property_set("sys.audio.init", "true");

          }

       }

    }

    return 0;

}



void audio_extn_pm_unvote(void)

{

    ALOGD("%s", __func__);

    if (audio_ss.pm_handle) {

        pm_client_disconnect(audio_ss.pm_handle);

        pm_client_unregister(audio_ss.pm_handle);

    }

}



void audio_extn_pm_set_parameters(struct str_parms *parms)

{

    int ret;

    char value[32];



    ret = str_parms_get_str(parms, AUDIO_PARAMETER_KEY_DEV_SHUTDOWN, value, sizeof(value));

    if (ret >= 0) {

        if (strstr(value, "true")) {

            ALOGD("Device shutdown notification received, unregister with PM");

            audio_extn_pm_unvote();

        }

    }

}



void audio_extn_pm_event_notifier(void *client_data, enum pm_event event)

{

    pm_client_event_acknowledge(audio_ss.pm_handle, event);



    /* Closing and re-opening of session is done based on snd card status given

     * by AudioDaemon during SS offline/online (legacy code). Just return for now.

     */

    switch (event) {

    case EVENT_PERIPH_GOING_OFFLINE:

        ALOGV("%s: %s is going offline", __func__, audio_ss.img_name);

    break;



    case EVENT_PERIPH_IS_OFFLINE:

        ALOGV("%s: %s is offline", __func__, audio_ss.img_name);

    break;



    case EVENT_PERIPH_GOING_ONLINE:

        ALOGV("%s: %s is going online", __func__, audio_ss.img_name);

    break;



    case EVENT_PERIPH_IS_ONLINE:

        ALOGV("%s: %s is online", __func__, audio_ss.img_name);

    break;



    default:

        ALOGV("%s: invalid event received from PM", __func__);

    break;

    }

}

hal/audio_extn/pm.h

0 → 100644
+68 −0
Original line number Diff line number Diff line 
/* Copyright (c) 2014, The Linux Foundation. All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are

 * met:

 *     * Redistributions of source code must retain the above copyright

 *       notice, this list of conditions and the following disclaimer.

 *     * Redistributions in binary form must reproduce the above

 *       copyright notice, this list of conditions and the following

 *       disclaimer in the documentation and/or other materials provided

 *       with the distribution.

 *     * Neither the name of The Linux Foundation nor the names of its

 *       contributors may be used to endorse or promote products derived

 *       from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED

 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS

 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR

 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,

 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE

 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN

 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 *

 */



#ifndef AUDIO_EXTN_PM_H

#define AUDIO_EXTN_PM_H



#include <errno.h>

#include <math.h>

#include <pthread.h>

#include <stdlib.h>

#include <fcntl.h>

#include <pm-service.h>

#include "audio_hw.h"

#include <platform.h>

#include <cutils/properties.h>

#include <cutils/log.h>





/* Client name to be registered with PM */

#define PM_CLIENT_NAME "audio"

/* Command to sysfs to unload image */

#define UNLOAD_IMAGE "0"

#define MAX_NAME_LEN 32

#define BOOT_IMG_SYSFS_PATH "/sys/kernel/boot_adsp/boot"



typedef struct {

    //MAX_NAME_LEN defined in mdm_detect.h

    char img_name[MAX_NAME_LEN];

    //this handle is used by peripheral mgr

    void *pm_handle;

}s_audio_subsys;



/* Vote to peripheral manager for required subsystem */

int audio_extn_pm_vote (void);



/* Unvote to peripheral manager */

void audio_extn_pm_unvote (void);



/* Get subsytem status notification from PM */

void audio_extn_pm_event_notifier (void *client_data, enum pm_event event);



#endif // AUDIO_EXTN_PM_H