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Commit c6d99bb0 authored by Vidyakumar Athota's avatar Vidyakumar Athota
Browse files

ASoC: apq8084: Add run-time PM support for voice over Bluetooth. 



When external modem is paired with the apps processor, voice call
over BT uses Slimbus to transfer voice packets from the modem to
the application processor. Enable run-time PM so that Slimbus
driver keeps the clocks enabled in the BT usecase.

Change-Id: Ice9b50877049fe1edfc028035cf3005e50bd722d
Signed-off-by: default avatarVidyakumar Athota <vathota@codeaurora.org>
parent 14a5d3a3

sound/soc/msm/apq8084.c

+35 −2
Original line number Diff line number Diff line
@@ -20,6 +20,8 @@ 
#include <linux/qpnp/clkdiv.h>

#include <linux/regulator/consumer.h>

#include <linux/io.h>

#include <linux/pm_runtime.h>

#include <linux/slimbus/slimbus.h>

#include <sound/core.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>
@@ -1880,6 +1882,37 @@ static struct snd_soc_ops apq8084_be_ops = { 
	.shutdown = apq8084_snd_shudown,

};



static int apq8084_slimbus_1_startup(struct snd_pcm_substream *substream)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct slim_controller *slim = slim_busnum_to_ctrl(1);



	pr_debug("%s(): dai_link_str_name = %s cpu_dai = %s codec_dai = %s\n",

		  __func__, rtd->dai_link->stream_name,

		  rtd->dai_link->cpu_dai_name,

		  rtd->dai_link->codec_dai_name);



	if (slim != NULL)

		pm_runtime_get_sync(slim->dev.parent);



	return 0;

}



static void apq8084_slimbus_1_shudown(struct snd_pcm_substream *substream)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct slim_controller *slim = slim_busnum_to_ctrl(1);



	pr_debug("%s(): dai_link_str_name = %s cpu_dai = %s codec_dai = %s\n",

		  __func__, rtd->dai_link->stream_name,

		  rtd->dai_link->cpu_dai_name, rtd->dai_link->codec_dai_name);



	if (slim != NULL) {

		pm_runtime_mark_last_busy(slim->dev.parent);

		pm_runtime_put(slim->dev.parent);

	}

}



static int apq8084_slimbus_2_hw_params(struct snd_pcm_substream *substream,

				       struct snd_pcm_hw_params *params)

{
@@ -2001,9 +2034,9 @@ end: 
}



static struct snd_soc_ops apq8084_slimbus_1_be_ops = {

	.startup = apq8084_snd_startup,

	.startup = apq8084_slimbus_1_startup,

	.hw_params = apq8084_slimbus_1_hw_params,

	.shutdown = apq8084_snd_shudown,

	.shutdown = apq8084_slimbus_1_shudown,

};



static struct snd_soc_ops apq8084_slimbus_2_be_ops = {