1*91f16700Schasinglulu /* 2*91f16700Schasinglulu * Copyright (C) 2018 Marvell International Ltd. 3*91f16700Schasinglulu * 4*91f16700Schasinglulu * SPDX-License-Identifier: BSD-3-Clause 5*91f16700Schasinglulu * https://spdx.org/licenses 6*91f16700Schasinglulu */ 7*91f16700Schasinglulu 8*91f16700Schasinglulu /* Driver for thermal unit located in Marvell ARMADA 8K and compatible SoCs */ 9*91f16700Schasinglulu 10*91f16700Schasinglulu #include <common/debug.h> 11*91f16700Schasinglulu #include <drivers/marvell/thermal.h> 12*91f16700Schasinglulu 13*91f16700Schasinglulu int marvell_thermal_init(struct tsen_config *tsen_cfg) 14*91f16700Schasinglulu { 15*91f16700Schasinglulu if (tsen_cfg->tsen_ready == 1) { 16*91f16700Schasinglulu INFO("thermal sensor is already initialized\n"); 17*91f16700Schasinglulu return 0; 18*91f16700Schasinglulu } 19*91f16700Schasinglulu 20*91f16700Schasinglulu if (tsen_cfg->ptr_tsen_probe == NULL) { 21*91f16700Schasinglulu ERROR("initial thermal sensor configuration is missing\n"); 22*91f16700Schasinglulu return -1; 23*91f16700Schasinglulu } 24*91f16700Schasinglulu 25*91f16700Schasinglulu if (tsen_cfg->ptr_tsen_probe(tsen_cfg)) { 26*91f16700Schasinglulu ERROR("thermal sensor initialization failed\n"); 27*91f16700Schasinglulu return -1; 28*91f16700Schasinglulu } 29*91f16700Schasinglulu 30*91f16700Schasinglulu VERBOSE("thermal sensor was initialized\n"); 31*91f16700Schasinglulu 32*91f16700Schasinglulu return 0; 33*91f16700Schasinglulu } 34*91f16700Schasinglulu 35*91f16700Schasinglulu int marvell_thermal_read(struct tsen_config *tsen_cfg, int *temp) 36*91f16700Schasinglulu { 37*91f16700Schasinglulu if (temp == NULL) { 38*91f16700Schasinglulu ERROR("NULL pointer for temperature read\n"); 39*91f16700Schasinglulu return -1; 40*91f16700Schasinglulu } 41*91f16700Schasinglulu 42*91f16700Schasinglulu if (tsen_cfg->ptr_tsen_read == NULL || 43*91f16700Schasinglulu tsen_cfg->tsen_ready == 0) { 44*91f16700Schasinglulu ERROR("thermal sensor was not initialized\n"); 45*91f16700Schasinglulu return -1; 46*91f16700Schasinglulu } 47*91f16700Schasinglulu 48*91f16700Schasinglulu if (tsen_cfg->ptr_tsen_read(tsen_cfg, temp)) { 49*91f16700Schasinglulu ERROR("temperature read failed\n"); 50*91f16700Schasinglulu return -1; 51*91f16700Schasinglulu } 52*91f16700Schasinglulu 53*91f16700Schasinglulu return 0; 54*91f16700Schasinglulu } 55