/*
* 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,
};