ASoC: mfld_machine: Enabled PM Functionality Audio codec driver

During voice call and System in S3, disconnect the call.  HAL opens the
headset-dai and plays a short tone after call is disconnected.  Audio driver
responds to Headset-close(), by disabling the PLL. But DAPM for disabling the
widgets and VAUD is trigger after 5 seconds,by this time system goes to S3 and
function to invoke vaud off is not called.This will cause power dissipation.

This patch implements PM in ASoC driver which disable VAUD when system enters
S3.

Change-Id: If5383fd70f2bfb8a0c350d1eeb2a13a44be3ef1c
Signed-off-by: Jeeja <jeeja.kp@intel.com>

diff --git a/sound/soc/mid-x86/mfld_machine.c b/sound/soc/mid-x86/mfld_machine.c
index de5d153..175d62c 100644 (file)
--- a/sound/soc/mid-x86/mfld_machine.c
+++ b/sound/soc/mid-x86/mfld_machine.c
@@ -243,8 +243,18 @@ static int mfld_init(struct snd_soc_pcm_runtime *runtime)
        /* we dont use linein in this so set to NC */
        snd_soc_dapm_disable_pin(dapm, "LINEINL");
        snd_soc_dapm_disable_pin(dapm, "LINEINR");
-       snd_soc_dapm_sync(dapm);
 
+
+       snd_soc_dapm_ignore_suspend(dapm, "PCM1_IN");
+       snd_soc_dapm_ignore_suspend(dapm, "PCM1_OUT");
+       snd_soc_dapm_ignore_suspend(dapm, "PCM2_IN");
+       snd_soc_dapm_ignore_suspend(dapm, "PCM2_OUT");
+       snd_soc_dapm_ignore_suspend(dapm, "IHFDAC Right");
+       snd_soc_dapm_ignore_suspend(dapm, "IHFDAC Left");
+       snd_soc_dapm_ignore_suspend(dapm, "HSDAC Right");
+       snd_soc_dapm_ignore_suspend(dapm, "HSDAC Left");
+
+       snd_soc_dapm_sync(dapm);
        /* Headset and button jack detection */
        ret_val = snd_soc_jack_new(codec, "Intel(R) MID Audio Jack",
                        SND_JACK_HEADSET | SND_JACK_BTN_0 |
@@ -277,6 +287,7 @@ struct snd_soc_dai_link mfld_msic_dailink[] = {
                .codec_name = "sn95031",
                .platform_name = "sst-platform",
                .init = mfld_init,
+               .ignore_suspend = 1,
        },
        {
                .name = "Medfield Speaker",
@@ -286,6 +297,7 @@ struct snd_soc_dai_link mfld_msic_dailink[] = {
                .codec_name = "sn95031",
                .platform_name = "sst-platform",
                .init = NULL,
+               .ignore_suspend = 1,
        },
 /*
  *     This configurtaion doesnt need Vibra as PCM device
@@ -300,6 +312,7 @@ struct snd_soc_dai_link mfld_msic_dailink[] = {
                .codec_name = "sn95031",
                .platform_name = "sst-platform",
                .init = NULL,
+               .ignore_suspend = 1,
        },
        {
                .name = "Medfield Haptics",
@@ -309,6 +322,7 @@ struct snd_soc_dai_link mfld_msic_dailink[] = {
                .codec_name = "sn95031",
                .platform_name = "sst-platform",
                .init = NULL,
+               .ignore_suspend = 1,
        },
 */     {
                .name = "Medfield Voice",
@@ -318,9 +332,38 @@ struct snd_soc_dai_link mfld_msic_dailink[] = {
                .codec_name = "sn95031",
                .platform_name = "sst-platform",
                .init = NULL,
+               .ignore_suspend = 1,
        },
 };
 
+#ifdef CONFIG_PM
+
+static int snd_mfld_mc_suspend(struct device *dev)
+{
+       pr_debug("In %s device name\n", __func__);
+       snd_soc_suspend(dev);
+       return 0;
+}
+static int snd_mfld_mc_resume(struct device *dev)
+{
+       pr_debug("In %s\n", __func__);
+       snd_soc_resume(dev);
+       return 0;
+}
+
+static int snd_mfld_mc_poweroff(struct device *dev)
+{
+       pr_debug("In %s\n", __func__);
+       snd_soc_poweroff(dev);
+       return 0;
+}
+
+#else
+#define snd_mfld_mc_suspend NULL
+#define snd_mfld_mc_resume NULL
+#define snd_mfld_mc_poweroff NULL
+#endif
+
 /* SoC card */
 static struct snd_soc_card snd_soc_card_mfld = {
        .name = "medfield_audio",
@@ -457,6 +500,7 @@ static int __devinit snd_mfld_mc_probe(struct platform_device *pdev)
                goto freeirq;
        }
        platform_set_drvdata(pdev, mc_drv_ctx);
+       dev_set_drvdata(&pdev->dev, &snd_soc_card_mfld);
        pr_debug("successfully exited probe\n");
        return ret_val;
 
@@ -470,7 +514,6 @@ unalloc:
 static int __devexit snd_mfld_mc_remove(struct platform_device *pdev)
 {
        struct mfld_mc_private *mc_drv_ctx = platform_get_drvdata(pdev);
-
        pr_debug("snd_mfld_mc_remove called\n");
        free_irq(platform_get_irq(pdev, 0), mc_drv_ctx);
        snd_soc_unregister_card(&snd_soc_card_mfld);
@@ -478,11 +521,17 @@ static int __devexit snd_mfld_mc_remove(struct platform_device *pdev)
        platform_set_drvdata(pdev, NULL);
        return 0;
 }
+const struct dev_pm_ops snd_mfld_mc_pm_ops = {
+       .suspend = snd_mfld_mc_suspend,
+       .resume = snd_mfld_mc_resume,
+       .poweroff = snd_mfld_mc_poweroff,
+};
 
 static struct platform_driver snd_mfld_mc_driver = {
        .driver = {
                .owner = THIS_MODULE,
                .name = "msic_audio",
+               .pm   = &snd_mfld_mc_pm_ops,
        },
        .probe = snd_mfld_mc_probe,
        .remove = __devexit_p(snd_mfld_mc_remove),