drivers/thermal/qcom/tsens-8974.c - arm/linux - Git at Google

 /*
  * Copyright (c) 2015, 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
  * only version 2 as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  */

 #include <linux/platform_device.h>
 #include "tsens.h"

 /* eeprom layout data for 8974 */
 #define BASE1_MASK		0xff
 #define S0_P1_MASK		0x3f00
 #define S1_P1_MASK		0xfc000
 #define S2_P1_MASK		0x3f00000
 #define S3_P1_MASK		0xfc000000
 #define S4_P1_MASK		0x3f
 #define S5_P1_MASK		0xfc0
 #define S6_P1_MASK		0x3f000
 #define S7_P1_MASK		0xfc0000
 #define S8_P1_MASK		0x3f000000
 #define S8_P1_MASK_BKP		0x3f
 #define S9_P1_MASK		0x3f
 #define S9_P1_MASK_BKP		0xfc0
 #define S10_P1_MASK		0xfc0
 #define S10_P1_MASK_BKP		0x3f000
 #define CAL_SEL_0_1		0xc0000000
 #define CAL_SEL_2		0x40000000
 #define CAL_SEL_SHIFT		30
 #define CAL_SEL_SHIFT_2		28

 #define S0_P1_SHIFT		8
 #define S1_P1_SHIFT		14
 #define S2_P1_SHIFT		20
 #define S3_P1_SHIFT		26
 #define S5_P1_SHIFT		6
 #define S6_P1_SHIFT		12
 #define S7_P1_SHIFT		18
 #define S8_P1_SHIFT		24
 #define S9_P1_BKP_SHIFT		6
 #define S10_P1_SHIFT		6
 #define S10_P1_BKP_SHIFT	12

 #define BASE2_SHIFT		12
 #define BASE2_BKP_SHIFT		18
 #define S0_P2_SHIFT		20
 #define S0_P2_BKP_SHIFT		26
 #define S1_P2_SHIFT		26
 #define S2_P2_BKP_SHIFT		6
 #define S3_P2_SHIFT		6
 #define S3_P2_BKP_SHIFT		12
 #define S4_P2_SHIFT		12
 #define S4_P2_BKP_SHIFT		18
 #define S5_P2_SHIFT		18
 #define S5_P2_BKP_SHIFT		24
 #define S6_P2_SHIFT		24
 #define S7_P2_BKP_SHIFT		6
 #define S8_P2_SHIFT		6
 #define S8_P2_BKP_SHIFT		12
 #define S9_P2_SHIFT		12
 #define S9_P2_BKP_SHIFT		18
 #define S10_P2_SHIFT		18
 #define S10_P2_BKP_SHIFT	24

 #define BASE2_MASK		0xff000
 #define BASE2_BKP_MASK		0xfc0000
 #define S0_P2_MASK		0x3f00000
 #define S0_P2_BKP_MASK		0xfc000000
 #define S1_P2_MASK		0xfc000000
 #define S1_P2_BKP_MASK		0x3f
 #define S2_P2_MASK		0x3f
 #define S2_P2_BKP_MASK		0xfc0
 #define S3_P2_MASK		0xfc0
 #define S3_P2_BKP_MASK		0x3f000
 #define S4_P2_MASK		0x3f000
 #define S4_P2_BKP_MASK		0xfc0000
 #define S5_P2_MASK		0xfc0000
 #define S5_P2_BKP_MASK		0x3f000000
 #define S6_P2_MASK		0x3f000000
 #define S6_P2_BKP_MASK		0x3f
 #define S7_P2_MASK		0x3f
 #define S7_P2_BKP_MASK		0xfc0
 #define S8_P2_MASK		0xfc0
 #define S8_P2_BKP_MASK		0x3f000
 #define S9_P2_MASK		0x3f000
 #define S9_P2_BKP_MASK		0xfc0000
 #define S10_P2_MASK		0xfc0000
 #define S10_P2_BKP_MASK		0x3f000000

 #define BKP_SEL			0x3
 #define BKP_REDUN_SEL		0xe0000000
 #define BKP_REDUN_SHIFT		29

 #define BIT_APPEND		0x3

 static int calibrate_8974(struct tsens_device *tmdev)
 {
 	int base1 = 0, base2 = 0, i;
 	u32 p1[11], p2[11];
 	int mode = 0;
 	u32 *calib, *bkp;
 	u32 calib_redun_sel;

 	calib = (u32 *)qfprom_read(tmdev->dev, "calib");
 	if (IS_ERR(calib))
 		return PTR_ERR(calib);

 	bkp = (u32 *)qfprom_read(tmdev->dev, "calib_backup");
 	if (IS_ERR(bkp))
 		return PTR_ERR(bkp);

 	calib_redun_sel =  bkp[1] & BKP_REDUN_SEL;
 	calib_redun_sel >>= BKP_REDUN_SHIFT;

 	if (calib_redun_sel == BKP_SEL) {
 		mode = (calib[4] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
 		mode |= (calib[5] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;

 		switch (mode) {
 		case TWO_PT_CALIB:
 			base2 = (bkp[2] & BASE2_BKP_MASK) >> BASE2_BKP_SHIFT;
 			p2[0] = (bkp[2] & S0_P2_BKP_MASK) >> S0_P2_BKP_SHIFT;
 			p2[1] = (bkp[3] & S1_P2_BKP_MASK);
 			p2[2] = (bkp[3] & S2_P2_BKP_MASK) >> S2_P2_BKP_SHIFT;
 			p2[3] = (bkp[3] & S3_P2_BKP_MASK) >> S3_P2_BKP_SHIFT;
 			p2[4] = (bkp[3] & S4_P2_BKP_MASK) >> S4_P2_BKP_SHIFT;
 			p2[5] = (calib[4] & S5_P2_BKP_MASK) >> S5_P2_BKP_SHIFT;
 			p2[6] = (calib[5] & S6_P2_BKP_MASK);
 			p2[7] = (calib[5] & S7_P2_BKP_MASK) >> S7_P2_BKP_SHIFT;
 			p2[8] = (calib[5] & S8_P2_BKP_MASK) >> S8_P2_BKP_SHIFT;
 			p2[9] = (calib[5] & S9_P2_BKP_MASK) >> S9_P2_BKP_SHIFT;
 			p2[10] = (calib[5] & S10_P2_BKP_MASK) >> S10_P2_BKP_SHIFT;
 			/* Fall through */
 		case ONE_PT_CALIB:
 		case ONE_PT_CALIB2:
 			base1 = bkp[0] & BASE1_MASK;
 			p1[0] = (bkp[0] & S0_P1_MASK) >> S0_P1_SHIFT;
 			p1[1] = (bkp[0] & S1_P1_MASK) >> S1_P1_SHIFT;
 			p1[2] = (bkp[0] & S2_P1_MASK) >> S2_P1_SHIFT;
 			p1[3] = (bkp[0] & S3_P1_MASK) >> S3_P1_SHIFT;
 			p1[4] = (bkp[1] & S4_P1_MASK);
 			p1[5] = (bkp[1] & S5_P1_MASK) >> S5_P1_SHIFT;
 			p1[6] = (bkp[1] & S6_P1_MASK) >> S6_P1_SHIFT;
 			p1[7] = (bkp[1] & S7_P1_MASK) >> S7_P1_SHIFT;
 			p1[8] = (bkp[2] & S8_P1_MASK_BKP) >> S8_P1_SHIFT;
 			p1[9] = (bkp[2] & S9_P1_MASK_BKP) >> S9_P1_BKP_SHIFT;
 			p1[10] = (bkp[2] & S10_P1_MASK_BKP) >> S10_P1_BKP_SHIFT;
 			break;
 		}
 	} else {
 		mode = (calib[1] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
 		mode |= (calib[3] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;

 		switch (mode) {
 		case TWO_PT_CALIB:
 			base2 = (calib[2] & BASE2_MASK) >> BASE2_SHIFT;
 			p2[0] = (calib[2] & S0_P2_MASK) >> S0_P2_SHIFT;
 			p2[1] = (calib[2] & S1_P2_MASK) >> S1_P2_SHIFT;
 			p2[2] = (calib[3] & S2_P2_MASK);
 			p2[3] = (calib[3] & S3_P2_MASK) >> S3_P2_SHIFT;
 			p2[4] = (calib[3] & S4_P2_MASK) >> S4_P2_SHIFT;
 			p2[5] = (calib[3] & S5_P2_MASK) >> S5_P2_SHIFT;
 			p2[6] = (calib[3] & S6_P2_MASK) >> S6_P2_SHIFT;
 			p2[7] = (calib[4] & S7_P2_MASK);
 			p2[8] = (calib[4] & S8_P2_MASK) >> S8_P2_SHIFT;
 			p2[9] = (calib[4] & S9_P2_MASK) >> S9_P2_SHIFT;
 			p2[10] = (calib[4] & S10_P2_MASK) >> S10_P2_SHIFT;
 			/* Fall through */
 		case ONE_PT_CALIB:
 		case ONE_PT_CALIB2:
 			base1 = calib[0] & BASE1_MASK;
 			p1[0] = (calib[0] & S0_P1_MASK) >> S0_P1_SHIFT;
 			p1[1] = (calib[0] & S1_P1_MASK) >> S1_P1_SHIFT;
 			p1[2] = (calib[0] & S2_P1_MASK) >> S2_P1_SHIFT;
 			p1[3] = (calib[0] & S3_P1_MASK) >> S3_P1_SHIFT;
 			p1[4] = (calib[1] & S4_P1_MASK);
 			p1[5] = (calib[1] & S5_P1_MASK) >> S5_P1_SHIFT;
 			p1[6] = (calib[1] & S6_P1_MASK) >> S6_P1_SHIFT;
 			p1[7] = (calib[1] & S7_P1_MASK) >> S7_P1_SHIFT;
 			p1[8] = (calib[1] & S8_P1_MASK) >> S8_P1_SHIFT;
 			p1[9] = (calib[2] & S9_P1_MASK);
 			p1[10] = (calib[2] & S10_P1_MASK) >> S10_P1_SHIFT;
 			break;
 		}
 	}

 	switch (mode) {
 	case ONE_PT_CALIB:
 		for (i = 0; i < tmdev->num_sensors; i++)
 			p1[i] += (base1 << 2) | BIT_APPEND;
 		break;
 	case TWO_PT_CALIB:
 		for (i = 0; i < tmdev->num_sensors; i++) {
 			p2[i] += base2;
 			p2[i] <<= 2;
 			p2[i] |= BIT_APPEND;
 		}
 		/* Fall through */
 	case ONE_PT_CALIB2:
 		for (i = 0; i < tmdev->num_sensors; i++) {
 			p1[i] += base1;
 			p1[i] <<= 2;
 			p1[i] |= BIT_APPEND;
 		}
 		break;
 	default:
 		for (i = 0; i < tmdev->num_sensors; i++)
 			p2[i] = 780;
 		p1[0] = 502;
 		p1[1] = 509;
 		p1[2] = 503;
 		p1[3] = 509;
 		p1[4] = 505;
 		p1[5] = 509;
 		p1[6] = 507;
 		p1[7] = 510;
 		p1[8] = 508;
 		p1[9] = 509;
 		p1[10] = 508;
 		break;
 	}

 	compute_intercept_slope(tmdev, p1, p2, mode);

 	return 0;
 }

 static const struct tsens_ops ops_8974 = {
 	.init		= init_common,
 	.calibrate	= calibrate_8974,
 	.get_temp	= get_temp_common,
 };

 const struct tsens_data data_8974 = {
 	.num_sensors	= 11,
 	.ops		= &ops_8974,
 };
	/*
	* Copyright (c) 2015, 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
	* only version 2 as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	*/

	#include <linux/platform_device.h>
	#include "tsens.h"

	/* eeprom layout data for 8974 */
	#define BASE1_MASK 0xff
	#define S0_P1_MASK 0x3f00
	#define S1_P1_MASK 0xfc000
	#define S2_P1_MASK 0x3f00000
	#define S3_P1_MASK 0xfc000000
	#define S4_P1_MASK 0x3f
	#define S5_P1_MASK 0xfc0
	#define S6_P1_MASK 0x3f000
	#define S7_P1_MASK 0xfc0000
	#define S8_P1_MASK 0x3f000000
	#define S8_P1_MASK_BKP 0x3f
	#define S9_P1_MASK 0x3f
	#define S9_P1_MASK_BKP 0xfc0
	#define S10_P1_MASK 0xfc0
	#define S10_P1_MASK_BKP 0x3f000
	#define CAL_SEL_0_1 0xc0000000
	#define CAL_SEL_2 0x40000000
	#define CAL_SEL_SHIFT 30
	#define CAL_SEL_SHIFT_2 28

	#define S0_P1_SHIFT 8
	#define S1_P1_SHIFT 14
	#define S2_P1_SHIFT 20
	#define S3_P1_SHIFT 26
	#define S5_P1_SHIFT 6
	#define S6_P1_SHIFT 12
	#define S7_P1_SHIFT 18
	#define S8_P1_SHIFT 24
	#define S9_P1_BKP_SHIFT 6
	#define S10_P1_SHIFT 6
	#define S10_P1_BKP_SHIFT 12

	#define BASE2_SHIFT 12
	#define BASE2_BKP_SHIFT 18
	#define S0_P2_SHIFT 20
	#define S0_P2_BKP_SHIFT 26
	#define S1_P2_SHIFT 26
	#define S2_P2_BKP_SHIFT 6
	#define S3_P2_SHIFT 6
	#define S3_P2_BKP_SHIFT 12
	#define S4_P2_SHIFT 12
	#define S4_P2_BKP_SHIFT 18
	#define S5_P2_SHIFT 18
	#define S5_P2_BKP_SHIFT 24
	#define S6_P2_SHIFT 24
	#define S7_P2_BKP_SHIFT 6
	#define S8_P2_SHIFT 6
	#define S8_P2_BKP_SHIFT 12
	#define S9_P2_SHIFT 12
	#define S9_P2_BKP_SHIFT 18
	#define S10_P2_SHIFT 18
	#define S10_P2_BKP_SHIFT 24

	#define BASE2_MASK 0xff000
	#define BASE2_BKP_MASK 0xfc0000
	#define S0_P2_MASK 0x3f00000
	#define S0_P2_BKP_MASK 0xfc000000
	#define S1_P2_MASK 0xfc000000
	#define S1_P2_BKP_MASK 0x3f
	#define S2_P2_MASK 0x3f
	#define S2_P2_BKP_MASK 0xfc0
	#define S3_P2_MASK 0xfc0
	#define S3_P2_BKP_MASK 0x3f000
	#define S4_P2_MASK 0x3f000
	#define S4_P2_BKP_MASK 0xfc0000
	#define S5_P2_MASK 0xfc0000
	#define S5_P2_BKP_MASK 0x3f000000
	#define S6_P2_MASK 0x3f000000
	#define S6_P2_BKP_MASK 0x3f
	#define S7_P2_MASK 0x3f
	#define S7_P2_BKP_MASK 0xfc0
	#define S8_P2_MASK 0xfc0
	#define S8_P2_BKP_MASK 0x3f000
	#define S9_P2_MASK 0x3f000
	#define S9_P2_BKP_MASK 0xfc0000
	#define S10_P2_MASK 0xfc0000
	#define S10_P2_BKP_MASK 0x3f000000

	#define BKP_SEL 0x3
	#define BKP_REDUN_SEL 0xe0000000
	#define BKP_REDUN_SHIFT 29

	#define BIT_APPEND 0x3

	static int calibrate_8974(struct tsens_device *tmdev)
	{
	int base1 = 0, base2 = 0, i;
	u32 p1[11], p2[11];
	int mode = 0;
	u32 calib, bkp;
	u32 calib_redun_sel;

	calib = (u32 *)qfprom_read(tmdev->dev, "calib");
	if (IS_ERR(calib))
	return PTR_ERR(calib);

	bkp = (u32 *)qfprom_read(tmdev->dev, "calib_backup");
	if (IS_ERR(bkp))
	return PTR_ERR(bkp);

	calib_redun_sel = bkp[1] & BKP_REDUN_SEL;
	calib_redun_sel >>= BKP_REDUN_SHIFT;

	if (calib_redun_sel == BKP_SEL) {
	mode = (calib[4] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
	mode \|= (calib[5] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;

	switch (mode) {
	case TWO_PT_CALIB:
	base2 = (bkp[2] & BASE2_BKP_MASK) >> BASE2_BKP_SHIFT;
	p2[0] = (bkp[2] & S0_P2_BKP_MASK) >> S0_P2_BKP_SHIFT;
	p2[1] = (bkp[3] & S1_P2_BKP_MASK);
	p2[2] = (bkp[3] & S2_P2_BKP_MASK) >> S2_P2_BKP_SHIFT;
	p2[3] = (bkp[3] & S3_P2_BKP_MASK) >> S3_P2_BKP_SHIFT;
	p2[4] = (bkp[3] & S4_P2_BKP_MASK) >> S4_P2_BKP_SHIFT;
	p2[5] = (calib[4] & S5_P2_BKP_MASK) >> S5_P2_BKP_SHIFT;
	p2[6] = (calib[5] & S6_P2_BKP_MASK);
	p2[7] = (calib[5] & S7_P2_BKP_MASK) >> S7_P2_BKP_SHIFT;
	p2[8] = (calib[5] & S8_P2_BKP_MASK) >> S8_P2_BKP_SHIFT;
	p2[9] = (calib[5] & S9_P2_BKP_MASK) >> S9_P2_BKP_SHIFT;
	p2[10] = (calib[5] & S10_P2_BKP_MASK) >> S10_P2_BKP_SHIFT;
	/* Fall through */
	case ONE_PT_CALIB:
	case ONE_PT_CALIB2:
	base1 = bkp[0] & BASE1_MASK;
	p1[0] = (bkp[0] & S0_P1_MASK) >> S0_P1_SHIFT;
	p1[1] = (bkp[0] & S1_P1_MASK) >> S1_P1_SHIFT;
	p1[2] = (bkp[0] & S2_P1_MASK) >> S2_P1_SHIFT;
	p1[3] = (bkp[0] & S3_P1_MASK) >> S3_P1_SHIFT;
	p1[4] = (bkp[1] & S4_P1_MASK);
	p1[5] = (bkp[1] & S5_P1_MASK) >> S5_P1_SHIFT;
	p1[6] = (bkp[1] & S6_P1_MASK) >> S6_P1_SHIFT;
	p1[7] = (bkp[1] & S7_P1_MASK) >> S7_P1_SHIFT;
	p1[8] = (bkp[2] & S8_P1_MASK_BKP) >> S8_P1_SHIFT;
	p1[9] = (bkp[2] & S9_P1_MASK_BKP) >> S9_P1_BKP_SHIFT;
	p1[10] = (bkp[2] & S10_P1_MASK_BKP) >> S10_P1_BKP_SHIFT;
	break;
	}
	} else {
	mode = (calib[1] & CAL_SEL_0_1) >> CAL_SEL_SHIFT;
	mode \|= (calib[3] & CAL_SEL_2) >> CAL_SEL_SHIFT_2;

	switch (mode) {
	case TWO_PT_CALIB:
	base2 = (calib[2] & BASE2_MASK) >> BASE2_SHIFT;
	p2[0] = (calib[2] & S0_P2_MASK) >> S0_P2_SHIFT;
	p2[1] = (calib[2] & S1_P2_MASK) >> S1_P2_SHIFT;
	p2[2] = (calib[3] & S2_P2_MASK);
	p2[3] = (calib[3] & S3_P2_MASK) >> S3_P2_SHIFT;
	p2[4] = (calib[3] & S4_P2_MASK) >> S4_P2_SHIFT;
	p2[5] = (calib[3] & S5_P2_MASK) >> S5_P2_SHIFT;
	p2[6] = (calib[3] & S6_P2_MASK) >> S6_P2_SHIFT;
	p2[7] = (calib[4] & S7_P2_MASK);
	p2[8] = (calib[4] & S8_P2_MASK) >> S8_P2_SHIFT;
	p2[9] = (calib[4] & S9_P2_MASK) >> S9_P2_SHIFT;
	p2[10] = (calib[4] & S10_P2_MASK) >> S10_P2_SHIFT;
	/* Fall through */
	case ONE_PT_CALIB:
	case ONE_PT_CALIB2:
	base1 = calib[0] & BASE1_MASK;
	p1[0] = (calib[0] & S0_P1_MASK) >> S0_P1_SHIFT;
	p1[1] = (calib[0] & S1_P1_MASK) >> S1_P1_SHIFT;
	p1[2] = (calib[0] & S2_P1_MASK) >> S2_P1_SHIFT;
	p1[3] = (calib[0] & S3_P1_MASK) >> S3_P1_SHIFT;
	p1[4] = (calib[1] & S4_P1_MASK);
	p1[5] = (calib[1] & S5_P1_MASK) >> S5_P1_SHIFT;
	p1[6] = (calib[1] & S6_P1_MASK) >> S6_P1_SHIFT;
	p1[7] = (calib[1] & S7_P1_MASK) >> S7_P1_SHIFT;
	p1[8] = (calib[1] & S8_P1_MASK) >> S8_P1_SHIFT;
	p1[9] = (calib[2] & S9_P1_MASK);
	p1[10] = (calib[2] & S10_P1_MASK) >> S10_P1_SHIFT;
	break;
	}
	}

	switch (mode) {
	case ONE_PT_CALIB:
	for (i = 0; i < tmdev->num_sensors; i++)
	p1[i] += (base1 << 2) \| BIT_APPEND;
	break;
	case TWO_PT_CALIB:
	for (i = 0; i < tmdev->num_sensors; i++) {
	p2[i] += base2;
	p2[i] <<= 2;
	p2[i] \|= BIT_APPEND;
	}
	/* Fall through */
	case ONE_PT_CALIB2:
	for (i = 0; i < tmdev->num_sensors; i++) {
	p1[i] += base1;
	p1[i] <<= 2;
	p1[i] \|= BIT_APPEND;
	}
	break;
	default:
	for (i = 0; i < tmdev->num_sensors; i++)
	p2[i] = 780;
	p1[0] = 502;
	p1[1] = 509;
	p1[2] = 503;
	p1[3] = 509;
	p1[4] = 505;
	p1[5] = 509;
	p1[6] = 507;
	p1[7] = 510;
	p1[8] = 508;
	p1[9] = 509;
	p1[10] = 508;
	break;
	}

	compute_intercept_slope(tmdev, p1, p2, mode);

	return 0;
	}

	static const struct tsens_ops ops_8974 = {
	.init = init_common,
	.calibrate = calibrate_8974,
	.get_temp = get_temp_common,
	};

	const struct tsens_data data_8974 = {
	.num_sensors = 11,
	.ops = &ops_8974,
	};