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Commit 2b55a309 authored by Deven Patel's avatar Deven Patel Committed by Gerrit - the friendly Code Review server
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ASoC: codecs: Add audio MCLK support for APQ8096 



For APQ8096 target, codec MCLK control needs to be sent to DSP
when audio use cases are enabled.

CRs-fixed: 992134
Change-Id: I6c04f27119afde7203c38fc9c471a17ec2b37d0a
Signed-off-by: default avatarDeven Patel <cdevenp@codeaurora.org>
parent dc9078ea

include/dt-bindings/clock/msm-clocks-8996.h

+2 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2014-2015, The Linux Foundation. All rights reserved.

/* Copyright (c) 2014-2016, 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
@@ -542,4 +542,5 @@ 
#define clk_audio_ap_clk 0x312ac429

#define clk_audio_pmi_clk 0xb7ba2274

#define clk_audio_ap_clk2 0xf0fbaf5b

#define clk_audio_lpass_mclk2 0x0122abee

#endif

sound/soc/codecs/audio-ext-clk.c

+86 −0
Original line number Diff line number Diff line
@@ -28,6 +28,7 @@ 
enum clk_mux {

	AP_CLK2,

	LPASS_MCLK,

	LPASS_MCLK2,

};



struct pinctrl_info {
@@ -77,6 +78,15 @@ static const struct afe_clk_cfg lpass_default = { 
	0,

};



static struct afe_clk_set lpass_default2 = {

	Q6AFE_LPASS_CLK_CONFIG_API_VERSION,

	Q6AFE_LPASS_CLK_ID_SPEAKER_I2S_OSR,

	Q6AFE_LPASS_IBIT_CLK_12_P288_MHZ,

	Q6AFE_LPASS_CLK_ATTRIBUTE_COUPLE_NO,

	Q6AFE_LPASS_CLK_ROOT_DEFAULT,

	0,

};



static inline struct audio_ext_ap_clk *to_audio_ap_clk(struct clk *clk)

{

	return container_of(clk, struct audio_ext_ap_clk, c);
@@ -224,6 +234,54 @@ err: 
	kfree(lpass_clk);

}



static int audio_ext_lpass_mclk2_prepare(struct clk *clk)

{

	struct audio_ext_lpass_mclk *audio_lpass_mclk2;

	struct pinctrl_info *pnctrl_info;

	int ret;



	audio_lpass_mclk2 = container_of(clk, struct audio_ext_lpass_mclk, c);

	pnctrl_info = &audio_lpass_mclk2->pnctrl_info;



	ret = pinctrl_select_state(pnctrl_info->pinctrl,

				   pnctrl_info->active);

	if (ret) {

		pr_err("%s: active state select failed with %d\n",

			__func__, ret);

		return -EIO;

	}



	lpass_default2.enable = 1;

	ret = afe_set_lpass_clk_cfg(IDX_RSVD_3, &lpass_default2);

	if (ret < 0) {

		pr_err("%s: failed to set clock, ret = %d\n", __func__, ret);

		return -EINVAL;

	}



	return 0;

}



static void audio_ext_lpass_mclk2_unprepare(struct clk *clk)

{

	struct audio_ext_lpass_mclk *audio_lpass_mclk2;

	struct pinctrl_info *pnctrl_info;

	int ret;



	audio_lpass_mclk2 = container_of(clk, struct audio_ext_lpass_mclk, c);

	pnctrl_info = &audio_lpass_mclk2->pnctrl_info;



	ret = pinctrl_select_state(pnctrl_info->pinctrl,

				   pnctrl_info->sleep);

	if (ret)

		pr_err("%s: sleep state select failed with %d\n",

			__func__, ret);



	lpass_default2.enable = 0;

	ret = afe_set_lpass_clk_cfg(IDX_RSVD_3, &lpass_default2);

	if (ret < 0)

		pr_err("%s: failed to reset clock, ret = %d\n", __func__, ret);

}



static struct clk_ops audio_ext_ap_clk_ops = {

	.prepare = audio_ext_clk_prepare,

	.unprepare = audio_ext_clk_unprepare,
@@ -239,6 +297,11 @@ static struct clk_ops audio_ext_lpass_mclk_ops = { 
	.unprepare = audio_ext_lpass_mclk_unprepare,

};



static struct clk_ops audio_ext_lpass_mclk2_ops = {

	.prepare = audio_ext_lpass_mclk2_prepare,

	.unprepare = audio_ext_lpass_mclk2_unprepare,

};



static struct audio_ext_pmi_clk audio_pmi_clk = {

	.gpio = -EINVAL,

	.c = {
@@ -273,11 +336,20 @@ static struct audio_ext_lpass_mclk audio_lpass_mclk = { 
	},

};



static struct audio_ext_lpass_mclk audio_lpass_mclk2 = {

	.c = {

		.dbg_name = "audio_ext_lpass_mclk2",

		.ops = &audio_ext_lpass_mclk2_ops,

		CLK_INIT(audio_lpass_mclk2.c),

	},

};



static struct clk_lookup audio_ref_clock[] = {

	CLK_LIST(audio_ap_clk),

	CLK_LIST(audio_pmi_clk),

	CLK_LIST(audio_ap_clk2),

	CLK_LIST(audio_lpass_mclk),

	CLK_LIST(audio_lpass_mclk2),

};



static int audio_get_pinctrl(struct platform_device *pdev, enum clk_mux mux)
@@ -293,6 +365,9 @@ static int audio_get_pinctrl(struct platform_device *pdev, enum clk_mux mux) 
	case LPASS_MCLK:

		pnctrl_info = &audio_lpass_mclk.pnctrl_info;

		break;

	case LPASS_MCLK2:

		pnctrl_info = &audio_lpass_mclk2.pnctrl_info;

		break;

	default:

		dev_err(&pdev->dev, "%s Not a valid MUX ID: %d\n",

			__func__, mux);
@@ -368,6 +443,11 @@ static int audio_ref_clk_probe(struct platform_device *pdev) 
			dev_err(&pdev->dev, "%s: Parsing pinctrl %s failed\n",

				__func__, "LPASS_MCLK");



		ret = audio_get_pinctrl(pdev, LPASS_MCLK2);

		if (ret)

			dev_dbg(&pdev->dev, "%s: Parsing pinctrl %s failed\n",

				__func__, "LPASS_MCLK2");



		ret = of_msm_clock_register(pdev->dev.of_node, audio_ref_clock,

			      ARRAY_SIZE(audio_ref_clock));

		if (ret)
@@ -458,6 +538,12 @@ static int audio_ref_clk_remove(struct platform_device *pdev) 
		pnctrl_info->pinctrl = NULL;

	}



	pnctrl_info = &audio_lpass_mclk2.pnctrl_info;

	if (pnctrl_info->pinctrl) {

		devm_pinctrl_put(pnctrl_info->pinctrl);

		pnctrl_info->pinctrl = NULL;

	}



	return 0;

}