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Commit a9d940cb authored by Bhalchandra Gajare's avatar Bhalchandra Gajare
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ASoC: wcd9335: Configure DMIC clock drive stength from pdata 



It is possible that differnt platforms could configure to DMIC clock
drive strength differently. Allow this configuration by setting the DMIC
clock drive strength through pdata.

CRs-fixed: 938006
Change-Id: I6f9f8a947e0efca31d0c50dec9a5973079bb48c4
Signed-off-by: default avatarBhalchandra Gajare <gajare@codeaurora.org>
parent 1468823d

sound/soc/codecs/wcd9335.c

+34 −2
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2015, The Linux Foundation. All rights reserved.

 * Copyright (c) 2015-2016 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
@@ -11694,7 +11694,7 @@ static int tasha_handle_pdata(struct tasha_priv *tasha, 
	struct snd_soc_codec *codec = tasha->codec;

	u8 dmic_ctl_val, mad_dmic_ctl_val;

	u8 anc_ctl_value;

	u32 def_dmic_rate;

	u32 def_dmic_rate, dmic_clk_drv;

	int vout_ctl_1, vout_ctl_2, vout_ctl_3, vout_ctl_4;

	int rc = 0;
@@ -11752,6 +11752,38 @@ static int tasha_handle_pdata(struct tasha_priv *tasha, 
		pdata->mad_dmic_sample_rate = pdata->dmic_sample_rate;

	}



	if (pdata->dmic_clk_drv ==

	    WCD9XXX_DMIC_CLK_DRIVE_UNDEFINED) {

		pdata->dmic_clk_drv = WCD9335_DMIC_CLK_DRIVE_DEFAULT;

		dev_info(codec->dev,

			 "%s: dmic_clk_strength invalid, default = %d\n",

			 __func__, pdata->dmic_clk_drv);

	}



	switch (pdata->dmic_clk_drv) {

	case 2:

		dmic_clk_drv = 0;

		break;

	case 4:

		dmic_clk_drv = 1;

		break;

	case 8:

		dmic_clk_drv = 2;

		break;

	case 16:

		dmic_clk_drv = 3;

		break;

	default:

		dev_err(codec->dev,

			"%s: invalid dmic_clk_drv %d, using default\n",

			__func__, pdata->dmic_clk_drv);

		dmic_clk_drv = 0;

		break;

	}



	snd_soc_update_bits(codec, WCD9335_TEST_DEBUG_PAD_DRVCTL,

			    0x0C, dmic_clk_drv << 2);



	/*

	 * Default the DMIC clk rates to mad_dmic_sample_rate,

	 * whereas, the anc/txfe dmic rates to dmic_sample_rate

sound/soc/codecs/wcd9335.h

+2 −1
Original line number Diff line number Diff line 
/*

 * Copyright (c) 2015, The Linux Foundation. All rights reserved.

 * Copyright (c) 2015-2016, 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
@@ -40,6 +40,7 @@ 
#define WCD9335_DMIC_CLK_DIV_6  0x3

#define WCD9335_DMIC_CLK_DIV_8  0x4

#define WCD9335_DMIC_CLK_DIV_16  0x5

#define WCD9335_DMIC_CLK_DRIVE_DEFAULT 0x02



#define WCD9335_ANC_DMIC_X2_FULL_RATE 1

#define WCD9335_ANC_DMIC_X2_HALF_RATE 0