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Commit 63d573b3 authored by Jishnu Prakash's avatar Jishnu Prakash Committed by Gerrit - the friendly Code Review server
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drivers: hwmon: Update support for reading bat_therm on VADC on QM215 



Add correct voltage-temperature LUT for bat_therm for QM215.

Change-Id: I9521e7430f835ef5ec08cdaf4dcfcf178ed34663
Signed-off-by: default avatarJishnu Prakash <jprakash@codeaurora.org>
parent d1a99118

drivers/hwmon/qpnp-adc-common.c

+89 −19
Original line number Diff line number Diff line
@@ -751,6 +751,61 @@ static const struct qpnp_vadc_map_pt adcmap_batt_therm_qrd[] = { 
	{107,	980}

};



/* Voltage to temperature */

static const struct qpnp_vadc_map_pt adcmap_batt_therm_qrd_215[] = {

	{1575,	-200},

	{1549,	-180},

	{1522,	-160},

	{1493,	-140},

	{1463,	-120},

	{1431,	-100},

	{1398,	-80},

	{1364,	-60},

	{1329,	-40},

	{1294,	-20},

	{1258,	0},

	{1222,	20},

	{1187,	40},

	{1151,	60},

	{1116,	80},

	{1082,	100},

	{1049,	120},

	{1016,	140},

	{985,	160},

	{955,	180},

	{926,	200},

	{899,	220},

	{873,	240},

	{849,	260},

	{825,	280},

	{804,	300},

	{783,	320},

	{764,	340},

	{746,	360},

	{729,	380},

	{714,	400},

	{699,	420},

	{686,	440},

	{673,	460},

	{662,	480},

	{651,	500},

	{641,	520},

	{632,	540},

	{623,	560},

	{615,	580},

	{608,	600},

	{601,	620},

	{595,	640},

	{589,	660},

	{583,	680},

	{578,	700},

	{574,	720},

	{569,	740},

	{565,	760},

	{562,	780},

	{558,	800}

};



/* Voltage to temperature */

static const struct qpnp_vadc_map_pt adcmap_batt_therm_pu30[] = {

	{1842,	-400},
@@ -1263,19 +1318,6 @@ int32_t qpnp_adc_batt_therm_qrd(struct qpnp_vadc_chip *chip, 
		qpnp_adc_map_voltage_temp(adcmap_batt_therm_qrd,

			ARRAY_SIZE(adcmap_batt_therm_qrd),

			batt_thm_voltage, &adc_chan_result->physical);

	} else {



		qpnp_adc_scale_with_calib_param(adc_code,

			adc_properties, chan_properties, &batt_thm_voltage);



		adc_chan_result->measurement = batt_thm_voltage;



		return qpnp_adc_map_voltage_temp(

				adcmap_batt_therm_qrd,

				ARRAY_SIZE(adcmap_batt_therm_qrd),

				batt_thm_voltage,

				&adc_chan_result->physical);



	}

	return 0;

}
@@ -1337,6 +1379,34 @@ int32_t qpnp_adc_batt_therm_pu400(struct qpnp_vadc_chip *chip, 
}

EXPORT_SYMBOL(qpnp_adc_batt_therm_pu400);



int32_t qpnp_adc_batt_therm_qrd_215(struct qpnp_vadc_chip *chip,

		int32_t adc_code,

		const struct qpnp_adc_properties *adc_properties,

		const struct qpnp_vadc_chan_properties *chan_properties,

		struct qpnp_vadc_result *adc_chan_result)

{

	int64_t batt_thm_voltage = 0;



	if (!chan_properties || !chan_properties->offset_gain_numerator ||

		!chan_properties->offset_gain_denominator || !adc_properties

		|| !adc_chan_result)

		return -EINVAL;



	qpnp_adc_scale_with_calib_param(adc_code,

		adc_properties, chan_properties, &batt_thm_voltage);



	adc_chan_result->measurement = batt_thm_voltage;



	return qpnp_adc_map_voltage_temp(

			adcmap_batt_therm_qrd_215,

			ARRAY_SIZE(adcmap_batt_therm_qrd_215),

			batt_thm_voltage,

			&adc_chan_result->physical);



	return 0;

}

EXPORT_SYMBOL(qpnp_adc_batt_therm_qrd_215);



int32_t qpnp_adc_scale_batt_therm(struct qpnp_vadc_chip *chip,

		int32_t adc_code,

		const struct qpnp_adc_properties *adc_properties,
@@ -2182,9 +2252,9 @@ int32_t qpnp_adc_qrd_215_btm_scaler(struct qpnp_vadc_chip *chip, 


	pr_debug("warm_temp:%d and cool_temp:%d\n", param->high_temp,

				param->low_temp);

	rc = qpnp_adc_map_voltage_temp(

		adcmap_batt_therm_qrd,

		ARRAY_SIZE(adcmap_batt_therm_qrd),

	rc = qpnp_adc_map_temp_voltage(

		adcmap_batt_therm_qrd_215,

		ARRAY_SIZE(adcmap_batt_therm_qrd_215),

		(param->low_temp),

		&low_output);

	if (rc) {
@@ -2197,9 +2267,9 @@ int32_t qpnp_adc_qrd_215_btm_scaler(struct qpnp_vadc_chip *chip, 
	low_output = div64_s64(low_output, btm_param.adc_vref);

	low_output += btm_param.adc_gnd;



	rc = qpnp_adc_map_voltage_temp(

		adcmap_batt_therm_qrd,

		ARRAY_SIZE(adcmap_batt_therm_qrd),

	rc = qpnp_adc_map_temp_voltage(

		adcmap_batt_therm_qrd_215,

		ARRAY_SIZE(adcmap_batt_therm_qrd_215),

		(param->high_temp),

		&high_output);

	if (rc) {

drivers/hwmon/qpnp-adc-voltage.c

+1 −0
Original line number Diff line number Diff line
@@ -232,6 +232,7 @@ static struct qpnp_vadc_scale_fn vadc_scale_fn[] = { 
	[SCALE_SMB1390_DIE_TEMP] = {qpnp_adc_scale_die_temp_1390},

	[SCALE_BATT_THERM_TEMP_PU30] = {qpnp_adc_batt_therm_pu30},

	[SCALE_BATT_THERM_TEMP_PU400] = {qpnp_adc_batt_therm_pu400},

	[SCALE_BATT_THERM_TEMP_QRD_215] = {qpnp_adc_batt_therm_qrd_215}

};



static struct qpnp_vadc_rscale_fn adc_vadc_rscale_fn[] = {

include/linux/qpnp/qpnp-adc.h

+26 −0
Original line number Diff line number Diff line
@@ -406,6 +406,8 @@ enum qpnp_adc_channel_scaling_param { 
 * %SCALE_BATT_THERM_TEMP_PU400: Conversion to temperature(decidegC) for 400k

 * pullup.

 * %SCALE_SMB1390_DIE_TEMP: Conversion for SMB1390 die temp

 * %SCALE_BATT_THERM_TEMP_QRD_215: Conversion to temperature(decidegC) based on

 *			btm parameters for QRD.

 * %SCALE_NONE: Do not use this scaling type.

 */

enum qpnp_adc_scale_fn_type {
@@ -432,6 +434,7 @@ enum qpnp_adc_scale_fn_type { 
	SCALE_SMB1390_DIE_TEMP,

	SCALE_BATT_THERM_TEMP_PU30,

	SCALE_BATT_THERM_TEMP_PU400,

	SCALE_BATT_THERM_TEMP_QRD_215,

	SCALE_NONE,

};
@@ -1509,6 +1512,23 @@ int32_t qpnp_adc_batt_therm_pu400(struct qpnp_vadc_chip *dev, 
			const struct qpnp_adc_properties *adc_prop,

			const struct qpnp_vadc_chan_properties *chan_prop,

			struct qpnp_vadc_result *chan_rslt);

/**

 * qpnp_adc_batt_therm_qrd_215() - Scales the pre-calibrated digital output

 *		of an ADC to the ADC reference and compensates for the

 *		gain and offset. Returns the temperature in decidegC for QRD.

 * @dev:	Structure device for qpnp vadc

 * @adc_code:	pre-calibrated digital output of the ADC.

 * @adc_prop:	adc properties of the pm8xxx adc such as bit resolution,

 *		reference voltage.

 * @chan_prop:	individual channel properties to compensate the i/p scaling,

 *		slope and offset.

 * @chan_rslt:	physical result to be stored.

 */

int32_t qpnp_adc_batt_therm_qrd_215(struct qpnp_vadc_chip *dev,

			int32_t adc_code,

			const struct qpnp_adc_properties *adc_prop,

			const struct qpnp_vadc_chan_properties *chan_prop,

			struct qpnp_vadc_result *chan_rslt);

/**

 * qpnp_adc_scale_batt_therm() - Scales the pre-calibrated digital output

 *		of an ADC to the ADC reference and compensates for the
@@ -2164,6 +2184,12 @@ static inline int32_t qpnp_adc_batt_therm_pu400(struct qpnp_vadc_chip *vadc, 
			const struct qpnp_vadc_chan_properties *chan_prop,

			struct qpnp_vadc_result *chan_rslt)

{ return -ENXIO; }

static inline int32_t qpnp_adc_batt_therm_qrd_215(struct qpnp_vadc_chip *vadc,

			int32_t adc_code,

			const struct qpnp_adc_properties *adc_prop,

			const struct qpnp_vadc_chan_properties *chan_prop,

			struct qpnp_vadc_result *chan_rslt)

{ return -ENXIO; }

static inline int32_t qpnp_adc_scale_batt_therm(struct qpnp_vadc_chip *vadc,

			int32_t adc_code,

			const struct qpnp_adc_properties *adc_prop,