Commit 0e580290 authored by AngeloGioacchino Del Regno's avatar AngeloGioacchino Del Regno Committed by Daniel Lezcano
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thermal: qcom: tsens-v1: Add support for MSM8956 and MSM8976 



Add support for reading calibrated value from thermistors in
MSM8956, MSM8976 and their APQ variants.

Signed-off-by: default avatarAngeloGioacchino Del Regno <kholk11@gmail.com>
Reviewed-by: default avatarAmit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: default avatarDaniel Lezcano <daniel.lezcano@linaro.org>
Link: https://lore.kernel.org/r/20191005104133.30297-2-kholk11@gmail.com
parent 573ae2d9

drivers/thermal/qcom/tsens-v1.c

+170 −1
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 
#include <linux/bitops.h>

#include <linux/regmap.h>

#include <linux/delay.h>

#include <linux/slab.h>

#include "tsens.h"



/* ----- SROT ------ */
@@ -20,6 +21,68 @@ 
#define TM_HIGH_LOW_INT_STATUS_OFF		0x0088

#define TM_HIGH_LOW_Sn_INT_THRESHOLD_OFF	0x0090



/* eeprom layout data for msm8956/76 (v1) */

#define MSM8976_BASE0_MASK	0xff

#define MSM8976_BASE1_MASK	0xff

#define MSM8976_BASE1_SHIFT	8



#define MSM8976_S0_P1_MASK	0x3f00

#define MSM8976_S1_P1_MASK	0x3f00000

#define MSM8976_S2_P1_MASK	0x3f

#define MSM8976_S3_P1_MASK	0x3f000

#define MSM8976_S4_P1_MASK	0x3f00

#define MSM8976_S5_P1_MASK	0x3f00000

#define MSM8976_S6_P1_MASK	0x3f

#define MSM8976_S7_P1_MASK	0x3f000

#define MSM8976_S8_P1_MASK	0x1f8

#define MSM8976_S9_P1_MASK	0x1f8000

#define MSM8976_S10_P1_MASK	0xf8000000

#define MSM8976_S10_P1_MASK_1	0x1



#define MSM8976_S0_P2_MASK	0xfc000

#define MSM8976_S1_P2_MASK	0xfc000000

#define MSM8976_S2_P2_MASK	0xfc0

#define MSM8976_S3_P2_MASK	0xfc0000

#define MSM8976_S4_P2_MASK	0xfc000

#define MSM8976_S5_P2_MASK	0xfc000000

#define MSM8976_S6_P2_MASK	0xfc0

#define MSM8976_S7_P2_MASK	0xfc0000

#define MSM8976_S8_P2_MASK	0x7e00

#define MSM8976_S9_P2_MASK	0x7e00000

#define MSM8976_S10_P2_MASK	0x7e



#define MSM8976_S0_P1_SHIFT	8

#define MSM8976_S1_P1_SHIFT	20

#define MSM8976_S2_P1_SHIFT	0

#define MSM8976_S3_P1_SHIFT	12

#define MSM8976_S4_P1_SHIFT	8

#define MSM8976_S5_P1_SHIFT	20

#define MSM8976_S6_P1_SHIFT	0

#define MSM8976_S7_P1_SHIFT	12

#define MSM8976_S8_P1_SHIFT	3

#define MSM8976_S9_P1_SHIFT	15

#define MSM8976_S10_P1_SHIFT	27

#define MSM8976_S10_P1_SHIFT_1	0



#define MSM8976_S0_P2_SHIFT	14

#define MSM8976_S1_P2_SHIFT	26

#define MSM8976_S2_P2_SHIFT	6

#define MSM8976_S3_P2_SHIFT	18

#define MSM8976_S4_P2_SHIFT	14

#define MSM8976_S5_P2_SHIFT	26

#define MSM8976_S6_P2_SHIFT	6

#define MSM8976_S7_P2_SHIFT	18

#define MSM8976_S8_P2_SHIFT	9

#define MSM8976_S9_P2_SHIFT	21

#define MSM8976_S10_P2_SHIFT	1



#define MSM8976_CAL_SEL_MASK	0x3



#define MSM8976_CAL_DEGC_PT1	30

#define MSM8976_CAL_DEGC_PT2	120

#define MSM8976_SLOPE_FACTOR	1000

#define MSM8976_SLOPE_DEFAULT	3200



/* eeprom layout data for qcs404/405 (v1) */

#define BASE0_MASK	0x000007f8

#define BASE1_MASK	0x0007f800
@@ -79,6 +142,30 @@ 
#define CAL_SEL_MASK	7

#define CAL_SEL_SHIFT	0



static void compute_intercept_slope_8976(struct tsens_priv *priv,

			      u32 *p1, u32 *p2, u32 mode)

{

	int i;



	priv->sensor[0].slope = 3313;

	priv->sensor[1].slope = 3275;

	priv->sensor[2].slope = 3320;

	priv->sensor[3].slope = 3246;

	priv->sensor[4].slope = 3279;

	priv->sensor[5].slope = 3257;

	priv->sensor[6].slope = 3234;

	priv->sensor[7].slope = 3269;

	priv->sensor[8].slope = 3255;

	priv->sensor[9].slope = 3239;

	priv->sensor[10].slope = 3286;



	for (i = 0; i < priv->num_sensors; i++) {

		priv->sensor[i].offset = (p1[i] * MSM8976_SLOPE_FACTOR) -

				(MSM8976_CAL_DEGC_PT1 *

				priv->sensor[i].slope);

	}

}



static int calibrate_v1(struct tsens_priv *priv)

{

	u32 base0 = 0, base1 = 0;
@@ -145,7 +232,74 @@ static int calibrate_v1(struct tsens_priv *priv) 
	return 0;

}



/* v1.x: qcs404,405 */

static int calibrate_8976(struct tsens_priv *priv)

{

	int base0 = 0, base1 = 0, i;

	u32 p1[11], p2[11];

	int mode = 0, tmp = 0;

	u32 *qfprom_cdata;



	qfprom_cdata = (u32 *)qfprom_read(priv->dev, "calib");

	if (IS_ERR(qfprom_cdata)) {

		kfree(qfprom_cdata);

		return PTR_ERR(qfprom_cdata);

	}



	mode = (qfprom_cdata[4] & MSM8976_CAL_SEL_MASK);

	dev_dbg(priv->dev, "calibration mode is %d\n", mode);



	switch (mode) {

	case TWO_PT_CALIB:

		base1 = (qfprom_cdata[2] & MSM8976_BASE1_MASK) >> MSM8976_BASE1_SHIFT;

		p2[0] = (qfprom_cdata[0] & MSM8976_S0_P2_MASK) >> MSM8976_S0_P2_SHIFT;

		p2[1] = (qfprom_cdata[0] & MSM8976_S1_P2_MASK) >> MSM8976_S1_P2_SHIFT;

		p2[2] = (qfprom_cdata[1] & MSM8976_S2_P2_MASK) >> MSM8976_S2_P2_SHIFT;

		p2[3] = (qfprom_cdata[1] & MSM8976_S3_P2_MASK) >> MSM8976_S3_P2_SHIFT;

		p2[4] = (qfprom_cdata[2] & MSM8976_S4_P2_MASK) >> MSM8976_S4_P2_SHIFT;

		p2[5] = (qfprom_cdata[2] & MSM8976_S5_P2_MASK) >> MSM8976_S5_P2_SHIFT;

		p2[6] = (qfprom_cdata[3] & MSM8976_S6_P2_MASK) >> MSM8976_S6_P2_SHIFT;

		p2[7] = (qfprom_cdata[3] & MSM8976_S7_P2_MASK) >> MSM8976_S7_P2_SHIFT;

		p2[8] = (qfprom_cdata[4] & MSM8976_S8_P2_MASK) >> MSM8976_S8_P2_SHIFT;

		p2[9] = (qfprom_cdata[4] & MSM8976_S9_P2_MASK) >> MSM8976_S9_P2_SHIFT;

		p2[10] = (qfprom_cdata[5] & MSM8976_S10_P2_MASK) >> MSM8976_S10_P2_SHIFT;



		for (i = 0; i < priv->num_sensors; i++)

			p2[i] = ((base1 + p2[i]) << 2);

		/* Fall through */

	case ONE_PT_CALIB2:

		base0 = qfprom_cdata[0] & MSM8976_BASE0_MASK;

		p1[0] = (qfprom_cdata[0] & MSM8976_S0_P1_MASK) >> MSM8976_S0_P1_SHIFT;

		p1[1] = (qfprom_cdata[0] & MSM8976_S1_P1_MASK) >> MSM8976_S1_P1_SHIFT;

		p1[2] = (qfprom_cdata[1] & MSM8976_S2_P1_MASK) >> MSM8976_S2_P1_SHIFT;

		p1[3] = (qfprom_cdata[1] & MSM8976_S3_P1_MASK) >> MSM8976_S3_P1_SHIFT;

		p1[4] = (qfprom_cdata[2] & MSM8976_S4_P1_MASK) >> MSM8976_S4_P1_SHIFT;

		p1[5] = (qfprom_cdata[2] & MSM8976_S5_P1_MASK) >> MSM8976_S5_P1_SHIFT;

		p1[6] = (qfprom_cdata[3] & MSM8976_S6_P1_MASK) >> MSM8976_S6_P1_SHIFT;

		p1[7] = (qfprom_cdata[3] & MSM8976_S7_P1_MASK) >> MSM8976_S7_P1_SHIFT;

		p1[8] = (qfprom_cdata[4] & MSM8976_S8_P1_MASK) >> MSM8976_S8_P1_SHIFT;

		p1[9] = (qfprom_cdata[4] & MSM8976_S9_P1_MASK) >> MSM8976_S9_P1_SHIFT;

		p1[10] = (qfprom_cdata[4] & MSM8976_S10_P1_MASK) >> MSM8976_S10_P1_SHIFT;

		tmp = (qfprom_cdata[5] & MSM8976_S10_P1_MASK_1) << MSM8976_S10_P1_SHIFT_1;

		p1[10] |= tmp;



		for (i = 0; i < priv->num_sensors; i++)

			p1[i] = (((base0) + p1[i]) << 2);

		break;

	default:

		for (i = 0; i < priv->num_sensors; i++) {

			p1[i] = 500;

			p2[i] = 780;

		}

		break;

	}



	compute_intercept_slope_8976(priv, p1, p2, mode);

	kfree(qfprom_cdata);



	return 0;

}



/* v1.x: msm8956,8976,qcs404,405 */



static const struct tsens_features tsens_v1_feat = {

	.ver_major	= VER_1_X,
@@ -221,3 +375,18 @@ const struct tsens_plat_data data_tsens_v1 = { 
	.feat		= &tsens_v1_feat,

	.fields	= tsens_v1_regfields,

};



static const struct tsens_ops ops_8976 = {

	.init		= init_common,

	.calibrate	= calibrate_8976,

	.get_temp	= get_temp_tsens_valid,

};



/* Valid for both MSM8956 and MSM8976. Sensor ID 3 is unused. */

const struct tsens_plat_data data_8976 = {

	.num_sensors	= 11,

	.ops		= &ops_8976,

	.hw_ids		= (unsigned int[]){0, 1, 2, 4, 5, 6, 7, 8, 9, 10},

	.feat		= &tsens_v1_feat,

	.fields		= tsens_v1_regfields,

};

drivers/thermal/qcom/tsens.c

+3 −0
Original line number Diff line number Diff line
@@ -62,6 +62,9 @@ static const struct of_device_id tsens_table[] = { 
	}, {

		.compatible = "qcom,msm8974-tsens",

		.data = &data_8974,

	}, {

		.compatible = "qcom,msm8976-tsens",

		.data = &data_8976,

	}, {

		.compatible = "qcom,msm8996-tsens",

		.data = &data_8996,

drivers/thermal/qcom/tsens.h

+1 −1
Original line number Diff line number Diff line
@@ -508,7 +508,7 @@ extern const struct tsens_plat_data data_8960; 
extern const struct tsens_plat_data data_8916, data_8974;



/* TSENS v1 targets */

extern const struct tsens_plat_data data_tsens_v1;

extern const struct tsens_plat_data data_tsens_v1, data_8976;



/* TSENS v2 targets */

extern const struct tsens_plat_data data_8996, data_tsens_v2;

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