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kernel: Add notifier for SSR

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Add support for  subsystem register in audioreach dummy driver.
This will receive SSR events and will update soundcard status

Change-Id:I97392800eaf5cd22f6bfdea76bd16951976a9233
This commit is contained in:
Sitong 2022-05-18 17:05:24 +08:00
commit 86f3ddf9cf
1 changed files with 30 additions and 0 deletions
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30
asoc/gvm_auto_spf_dummy.c Executable file → Normal file
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@ -29,6 +29,8 @@
#include <sound/info.h>
#include <dsp/audio_notifier.h>
#include "msm_dailink.h"
#include <soc/qcom/subsystem_restart.h>
#include <soc/qcom/subsystem_notif.h>
#define DRV_NAME "spf-asoc-snd"
@ -823,6 +825,31 @@ void msm_common_set_pdata(struct snd_soc_card *card,
pdata->common_pdata = common_pdata;
}
static int auto_spf_dummy_ssr_cb(struct notifier_block *this,
unsigned long code,
void *data)
{
struct snd_soc_card *card = platform_get_drvdata(spdev);
switch (code) {
case SUBSYS_BEFORE_SHUTDOWN:
snd_soc_card_change_online_state(card, 0); // change sndcard status to OFFLINE
dev_info(&spdev->dev, "ssr restart, mark sndcard offline\n");
break;
case SUBSYS_AFTER_POWERUP:
snd_soc_card_change_online_state(card, 1); // change sndcard status to ONLINE
dev_info(&spdev->dev, "ssr complete, mark sndcard online\n");
break;
default:
break;
}
return 0;
}
static struct notifier_block auto_spf_dummy_ssr_notifier = {
.notifier_call = auto_spf_dummy_ssr_cb,
};
static int msm_asoc_machine_probe(struct platform_device *pdev)
{
struct snd_soc_card *card;
@ -883,6 +910,9 @@ static int msm_asoc_machine_probe(struct platform_device *pdev)
pr_err("Sound card %s registered\n", card->name);
spdev = pdev;
subsys_notif_register_notifier("adsp", &auto_spf_dummy_ssr_notifier);
dev_info(&pdev->dev, "Audio driver register for SSR complete\n");
return 0;
err:
devm_kfree(&pdev->dev, pdata);