// SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2015, The Linux Foundation. All rights reserved. */ #include <linux/platform_device.h> #include "tsens.h" /* eeprom layout data for 8916 */ #define BASE0_MASK 0x0000007f #define BASE1_MASK 0xfe000000 #define BASE0_SHIFT 0 #define BASE1_SHIFT 25 #define S0_P1_MASK 0x00000f80 #define S1_P1_MASK 0x003e0000 #define S2_P1_MASK 0xf8000000 #define S3_P1_MASK 0x000003e0 #define S4_P1_MASK 0x000f8000 #define S0_P2_MASK 0x0001f000 #define S1_P2_MASK 0x07c00000 #define S2_P2_MASK 0x0000001f #define S3_P2_MASK 0x00007c00 #define S4_P2_MASK 0x01f00000 #define S0_P1_SHIFT 7 #define S1_P1_SHIFT 17 #define S2_P1_SHIFT 27 #define S3_P1_SHIFT 5 #define S4_P1_SHIFT 15 #define S0_P2_SHIFT 12 #define S1_P2_SHIFT 22 #define S2_P2_SHIFT 0 #define S3_P2_SHIFT 10 #define S4_P2_SHIFT 20 #define CAL_SEL_MASK 0xe0000000 #define CAL_SEL_SHIFT 29 static int calibrate_8916(struct tsens_device *tmdev) { int base0 = 0, base1 = 0, i; u32 p1[5], p2[5]; int mode = 0; u32 *qfprom_cdata, *qfprom_csel; qfprom_cdata = (u32 *)qfprom_read(tmdev->dev, "calib"); if (IS_ERR(qfprom_cdata)) return PTR_ERR(qfprom_cdata); qfprom_csel = (u32 *)qfprom_read(tmdev->dev, "calib_sel"); if (IS_ERR(qfprom_csel)) return PTR_ERR(qfprom_csel); mode = (qfprom_csel[0] & CAL_SEL_MASK) >> CAL_SEL_SHIFT; dev_dbg(tmdev->dev, "calibration mode is %d\n", mode); switch (mode) { case TWO_PT_CALIB: base1 = (qfprom_cdata[1] & BASE1_MASK) >> BASE1_SHIFT; p2[0] = (qfprom_cdata[0] & S0_P2_MASK) >> S0_P2_SHIFT; p2[1] = (qfprom_cdata[0] & S1_P2_MASK) >> S1_P2_SHIFT; p2[2] = (qfprom_cdata[1] & S2_P2_MASK) >> S2_P2_SHIFT; p2[3] = (qfprom_cdata[1] & S3_P2_MASK) >> S3_P2_SHIFT; p2[4] = (qfprom_cdata[1] & S4_P2_MASK) >> S4_P2_SHIFT; for (i = 0; i < tmdev->num_sensors; i++) p2[i] = ((base1 + p2[i]) << 3); /* Fall through */ case ONE_PT_CALIB2: base0 = (qfprom_cdata[0] & BASE0_MASK); p1[0] = (qfprom_cdata[0] & S0_P1_MASK) >> S0_P1_SHIFT; p1[1] = (qfprom_cdata[0] & S1_P1_MASK) >> S1_P1_SHIFT; p1[2] = (qfprom_cdata[0] & S2_P1_MASK) >> S2_P1_SHIFT; p1[3] = (qfprom_cdata[1] & S3_P1_MASK) >> S3_P1_SHIFT; p1[4] = (qfprom_cdata[1] & S4_P1_MASK) >> S4_P1_SHIFT; for (i = 0; i < tmdev->num_sensors; i++) p1[i] = (((base0) + p1[i]) << 3); break; default: for (i = 0; i < tmdev->num_sensors; i++) { p1[i] = 500; p2[i] = 780; } break; } compute_intercept_slope(tmdev, p1, p2, mode); return 0; } static const struct tsens_ops ops_8916 = { .init = init_common, .calibrate = calibrate_8916, .get_temp = get_temp_common, }; const struct tsens_data data_8916 = { .num_sensors = 5, .ops = &ops_8916, .reg_offsets = { [SROT_CTRL_OFFSET] = 0x0 }, .hw_ids = (unsigned int []){0, 1, 2, 4, 5 }, };