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Commit c624cc61 authored by Laxminath Kasam's avatar Laxminath Kasam Committed by Gerrit - the friendly Code Review server
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ASoC: msm: Add second session ASM loopback support on 8909 



Update routing and loopback platform drivers to support
ASM loopback in RX path for HFP feature using MultiMedia8.

CRs-Fixed: 985385
Change-Id: Iecd0b7b4f819fc31202d835994a48681cb64b61b
Signed-off-by: default avatarSurendar Karka <sukark@codeaurora.org>
Signed-off-by: default avatarLaxminath Kasam <lkasam@codeaurora.org>
parent 53d1dd96

sound/soc/msm/qdsp6v2/msm-pcm-loopback-v2.c

+39 −17
Original line number Diff line number Diff line 
/* Copyright (c) 2013-2015, The Linux Foundation. All rights reserved.

/* Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.



* This program is free software; you can redistribute it and/or modify

* it under the terms of the GNU General Public License version 2 and
@@ -33,6 +33,12 @@ 
static const DECLARE_TLV_DB_LINEAR(loopback_rx_vol_gain, 0,

				LOOPBACK_VOL_MAX_STEPS);



enum {

	LOOPBACK_SESSION_1,

	LOOPBACK_SESSION_2,

	LOOPBACK_SESSION_MAX,

};



struct msm_pcm_loopback {

	struct snd_pcm_substream *playback_substream;

	struct snd_pcm_substream *capture_substream;
@@ -51,6 +57,10 @@ struct msm_pcm_loopback { 
	int volume;

};



struct loopback_info {

	struct msm_pcm_loopback loop[LOOPBACK_SESSION_MAX];

};



static void stop_pcm(struct msm_pcm_loopback *pcm);



static void msm_pcm_route_event_handler(enum msm_pcm_routing_event event,
@@ -116,13 +126,22 @@ static int msm_pcm_open(struct snd_pcm_substream *substream) 
	struct snd_pcm_runtime *runtime = substream->runtime;

	struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream);

	struct msm_pcm_loopback *pcm;

	struct loopback_info *loopback_info;

	int ret = 0;

	uint16_t bits_per_sample = 16;

	struct msm_pcm_routing_evt event;

	struct asm_session_mtmx_strtr_param_window_v2_t asm_mtmx_strtr_window;

	uint32_t param_id;



	pcm = dev_get_drvdata(rtd->platform->dev);

	dev_dbg(rtd->platform->dev, "%s: stream name: %s\n", __func__,

			rtd->dai_link->stream_name);



	loopback_info = dev_get_drvdata(rtd->platform->dev);

	if (!strcmp(rtd->dai_link->stream_name, "MultiMedia6"))

		pcm = &loopback_info->loop[LOOPBACK_SESSION_1];

	else

		pcm = &loopback_info->loop[LOOPBACK_SESSION_2];



	mutex_lock(&pcm->lock);



	pcm->volume = 0x2000;
@@ -368,32 +387,35 @@ static struct snd_soc_platform_driver msm_soc_platform = { 


static int msm_pcm_probe(struct platform_device *pdev)

{

	struct msm_pcm_loopback *pcm;



	struct loopback_info *loopback;

	int i = 0;



	dev_dbg(&pdev->dev, "%s: dev name %s\n",

		__func__, dev_name(&pdev->dev));



	pcm = kzalloc(sizeof(struct msm_pcm_loopback), GFP_KERNEL);

	if (!pcm) {

		dev_err(&pdev->dev, "%s Failed to allocate memory for pcm\n",

			__func__);

	loopback = kzalloc(sizeof(struct loopback_info), GFP_KERNEL);

	if (!loopback)

		return -ENOMEM;

	} else {

		mutex_init(&pcm->lock);

		dev_set_drvdata(&pdev->dev, pcm);

	}



	for (i = 0; i < LOOPBACK_SESSION_MAX; i++)

		mutex_init(&loopback->loop[i].lock);



	dev_set_drvdata(&pdev->dev, loopback);

	return snd_soc_register_platform(&pdev->dev,

				   &msm_soc_platform);

}



static int msm_pcm_remove(struct platform_device *pdev)

{

	struct msm_pcm_loopback *pcm;



	pcm = dev_get_drvdata(&pdev->dev);

	mutex_destroy(&pcm->lock);

	kfree(pcm);

	struct loopback_info *loopback;

	int i = 0;



	loopback = dev_get_drvdata(&pdev->dev);

	if (loopback) {

		for (i = 0; i < LOOPBACK_SESSION_MAX; i++)

			mutex_destroy(&loopback->loop[i].lock);

		kfree(loopback);

	}



	snd_soc_unregister_platform(&pdev->dev);

	return 0;