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Commit 6f0e2d72 authored by Sudheer Papothi's avatar Sudheer Papothi
Browse files

ASoC: wsa881x: Add support for temperature sensor 



wsa881x has inbuilt temperature sensor. Temperature sensor
is used for speaker protection and over temperature protection.
Add support for temperature sensor in wsa881x driver.

Change-Id: I04de1301d3e107599ce9098231253265e86fc994
Signed-off-by: default avatarSudheer Papothi <spapothi@codeaurora.org>
parent 21bb23d1

sound/soc/codecs/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -119,7 +119,7 @@ snd-soc-wcd9335-objs := wcd9335.o wcd9xxx-common-v2.o wcd9xxx-resmgr-v2.o 
snd-soc-wcd9xxx-objs := wcd9xxx-resmgr.o wcd9xxx-mbhc.o wcd9xxx-common.o

audio-ext-clock-objs := audio-ext-clk.o

snd-soc-wcd-cpe-objs := wcd_cpe_services.o wcd_cpe_core.o

snd-soc-wsa881x-objs := wsa881x.o wsa881x-tables.o wsa881x-regmap.o

snd-soc-wsa881x-objs := wsa881x.o wsa881x-tables.o wsa881x-regmap.o wsa881x-temp-sensor.o

snd-soc-wcd-mbhc-objs := wcd-mbhc-v2.o

snd-soc-wl1273-objs := wl1273.o

snd-soc-wm-adsp-objs := wm_adsp.o

sound/soc/codecs/wsa881x-regmap.c

+9 −0
Original line number Diff line number Diff line
@@ -181,6 +181,15 @@ static bool wsa881x_volatile_register(struct device *dev, unsigned int reg) 
	case WSA881X_SPKR_STATUS1:

	case WSA881X_SPKR_STATUS2:

	case WSA881X_SPKR_STATUS3:

	case WSA881X_OTP_REG_0:

	case WSA881X_OTP_REG_1:

	case WSA881X_OTP_REG_2:

	case WSA881X_OTP_REG_3:

	case WSA881X_OTP_REG_4:

	case WSA881X_OTP_REG_5:

	case WSA881X_TEMP_DOUT_MSB:

	case WSA881X_TEMP_DOUT_LSB:

	case WSA881X_TEMP_OP:

		return true;

	default:

		return false;

sound/soc/codecs/wsa881x.c

+45 −5
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ 
#include <sound/soc-dapm.h>

#include <sound/tlv.h>

#include "wsa881x.h"

#include "wsa881x-temp-sensor.h"



enum {

	G_18DB = 0,
@@ -83,6 +84,9 @@ struct wsa881x_priv { 
	bool visense_enable;

	struct swr_port port[WSA881X_MAX_SWR_PORTS];

	int pd_gpio;

	struct wsa881x_tz_priv tz_pdata;

	int bg_cnt;

	struct mutex bg_lock;

};



#define SWR_SLV_MAX_REG_ADDR	0x390
@@ -338,13 +342,28 @@ static int wsa881x_visense_adc_ctrl(struct snd_soc_codec *codec, bool enable) 


static int wsa881x_bandgap_ctrl(struct snd_soc_codec *codec, bool enable)

{

	dev_dbg(codec->dev, "%s: enable:%d\n", __func__, enable);

	struct wsa881x_priv *wsa881x = snd_soc_codec_get_drvdata(codec);



	dev_dbg(codec->dev, "%s: enable:%d, bg_count:%d\n", __func__,

		enable, wsa881x->bg_cnt);

	mutex_lock(&wsa881x->bg_lock);

	if (enable) {

		snd_soc_update_bits(codec, WSA881X_TEMP_OP, 0x08, 0x08);

		++wsa881x->bg_cnt;

		if (wsa881x->bg_cnt == 1) {

			snd_soc_update_bits(codec, WSA881X_TEMP_OP,

					    0x08, 0x08);

			/* 400usec sleep is needed as per HW requirement */

			usleep_range(400, 410);

		}

	} else {

		--wsa881x->bg_cnt;

		if (wsa881x->bg_cnt <= 0) {

			WARN_ON(wsa881x->bg_cnt < 0);

			wsa881x->bg_cnt = 0;

			snd_soc_update_bits(codec, WSA881X_TEMP_OP, 0x08, 0x00);

		}

	}

	mutex_unlock(&wsa881x->bg_lock);

	return 0;

}
@@ -695,6 +714,12 @@ static void wsa881x_init(struct snd_soc_codec *codec) 
	snd_soc_update_bits(codec, WSA881X_BOOST_ZX_CTL, 0x20, 0x00);

}



static int32_t wsa881x_resource_acquire(struct snd_soc_codec *codec,

						bool enable)

{

	return wsa881x_bandgap_ctrl(codec, enable);

}



static int wsa881x_probe(struct snd_soc_codec *codec)

{

	struct wsa881x_priv *wsa881x = snd_soc_codec_get_drvdata(codec);
@@ -720,13 +745,28 @@ static int wsa881x_probe(struct snd_soc_codec *codec) 
		return ret;

	}

	dev->dev_num = devnum;

	mutex_init(&wsa881x->bg_lock);

	snprintf(wsa881x->tz_pdata.name, sizeof(wsa881x->tz_pdata.name),

		"%s.%x", "wsatz", (u8)dev->addr);

	wsa881x->bg_cnt = 0;

	wsa881x->tz_pdata.codec = codec;

	wsa881x->tz_pdata.dig_base = WSA881X_DIGITAL_BASE;

	wsa881x->tz_pdata.ana_base = WSA881X_ANALOG_BASE;

	wsa881x->tz_pdata.wsa_resource_acquire = wsa881x_resource_acquire;

	wsa881x_init_thermal(&wsa881x->tz_pdata);

	wsa881x_init(codec);



	return ret;

}



static int wsa881x_remove(struct snd_soc_codec *codec)

{

	/* Add codec shutdown sequence */

	struct wsa881x_priv *wsa881x = snd_soc_codec_get_drvdata(codec);



	if (wsa881x->tz_pdata.tz_dev)

		wsa881x_deinit_thermal(wsa881x->tz_pdata.tz_dev);

	mutex_destroy(&wsa881x->bg_lock);



	return 0;

}