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Commit 27b1bbc5 authored by Laxminath Kasam's avatar Laxminath Kasam
Browse files

soc: pinctrl-lpi: add SSR changes based on snd event fwk 



Add changes to support SSR in pinctrl lpi driver
based on snd event framework.

Change-Id: If4fb3085ab69ae04628ef10a8b528d0cdc20f40d
Signed-off-by: default avatarLaxminath Kasam <lkasam@codeaurora.org>
parent d7262ae1

soc/pinctrl-lpi.c

+26 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ 
#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/types.h>

#include <soc/snd_event.h>

#include <dsp/audio_notifier.h>



#include "core.h"
@@ -59,6 +60,7 @@ 
#define LPI_GPIO_FUNC_FUNC5			"func5"



static bool lpi_dev_up;

static struct device *lpi_dev;



/* The index of each function in lpi_gpio_functions[] array */

enum lpi_gpio_func_index {
@@ -384,12 +386,14 @@ static int lpi_notifier_service_cb(struct notifier_block *this, 
			initial_boot = false;

			break;

		}

		snd_event_notify(lpi_dev, SND_EVENT_DOWN);

		lpi_dev_up = false;

		break;

	case AUDIO_NOTIFIER_SERVICE_UP:

		if (initial_boot)

			initial_boot = false;

		lpi_dev_up = true;

		snd_event_notify(lpi_dev, SND_EVENT_UP);

		break;

	default:

		break;
@@ -402,6 +406,15 @@ static struct notifier_block service_nb = { 
	.priority = -INT_MAX,

};



static void lpi_pinctrl_ssr_disable(struct device *dev, void *data)

{

	lpi_dev_up = false;

}



static const struct snd_event_ops lpi_pinctrl_ssr_ops = {

	.disable = lpi_pinctrl_ssr_disable,

};



#ifdef CONFIG_DEBUG_FS

#include <linux/seq_file.h>
@@ -576,6 +589,7 @@ static int lpi_pinctrl_probe(struct platform_device *pdev) 
		goto err_range;

	}



	lpi_dev = &pdev->dev;

	lpi_dev_up = true;

	ret = audio_notifier_register("lpi_tlmm", AUDIO_NOTIFIER_ADSP_DOMAIN,

				      &service_nb);
@@ -585,8 +599,19 @@ static int lpi_pinctrl_probe(struct platform_device *pdev) 
		goto err_range;

	}



	ret = snd_event_client_register(dev, &lpi_pinctrl_ssr_ops, NULL);

	if (!ret) {

		snd_event_notify(dev, SND_EVENT_UP);

	} else {

		dev_err(dev, "%s: snd_event registration failed, ret [%d]\n",

			__func__, ret);

		goto err_snd_evt;

	}



	return 0;



err_snd_evt:

	audio_notifier_deregister("lpi_tlmm");

err_range:

	gpiochip_remove(&state->chip);

err_chip:
@@ -597,6 +622,7 @@ static int lpi_pinctrl_remove(struct platform_device *pdev) 
{

	struct lpi_gpio_state *state = platform_get_drvdata(pdev);



	snd_event_client_deregister(&pdev->dev);

	audio_notifier_deregister("lpi_tlmm");

	gpiochip_remove(&state->chip);

	return 0;