1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Dollar Cove TI PMIC operation region driver 4 * Copyright (C) 2014 Intel Corporation. All rights reserved. 5 * 6 * Rewritten and cleaned up 7 * Copyright (C) 2017 Takashi Iwai <tiwai@suse.de> 8 */ 9 10 #include <linux/acpi.h> 11 #include <linux/bits.h> 12 #include <linux/init.h> 13 #include <linux/mfd/intel_soc_pmic.h> 14 #include <linux/platform_device.h> 15 #include <asm/byteorder.h> 16 #include "intel_pmic.h" 17 18 /* registers stored in 16bit BE (high:low, total 10bit) */ 19 #define PMIC_REG_MASK GENMASK(9, 0) 20 21 #define CHTDC_TI_VBAT 0x54 22 #define CHTDC_TI_DIETEMP 0x56 23 #define CHTDC_TI_BPTHERM 0x58 24 #define CHTDC_TI_GPADC 0x5a 25 26 static const struct pmic_table chtdc_ti_power_table[] = { 27 { .address = 0x00, .reg = 0x41 }, /* LDO1 */ 28 { .address = 0x04, .reg = 0x42 }, /* LDO2 */ 29 { .address = 0x08, .reg = 0x43 }, /* LDO3 */ 30 { .address = 0x0c, .reg = 0x45 }, /* LDO5 */ 31 { .address = 0x10, .reg = 0x46 }, /* LDO6 */ 32 { .address = 0x14, .reg = 0x47 }, /* LDO7 */ 33 { .address = 0x18, .reg = 0x48 }, /* LDO8 */ 34 { .address = 0x1c, .reg = 0x49 }, /* LDO9 */ 35 { .address = 0x20, .reg = 0x4a }, /* LD10 */ 36 { .address = 0x24, .reg = 0x4b }, /* LD11 */ 37 { .address = 0x28, .reg = 0x4c }, /* LD12 */ 38 { .address = 0x2c, .reg = 0x4d }, /* LD13 */ 39 { .address = 0x30, .reg = 0x4e }, /* LD14 */ 40 }; 41 42 static const struct pmic_table chtdc_ti_thermal_table[] = { 43 { 44 .address = 0x00, 45 .reg = CHTDC_TI_GPADC 46 }, 47 { 48 .address = 0x0c, 49 .reg = CHTDC_TI_GPADC 50 }, 51 /* TMP2 -> SYSTEMP */ 52 { 53 .address = 0x18, 54 .reg = CHTDC_TI_GPADC 55 }, 56 /* TMP3 -> BPTHERM */ 57 { 58 .address = 0x24, 59 .reg = CHTDC_TI_BPTHERM 60 }, 61 { 62 .address = 0x30, 63 .reg = CHTDC_TI_GPADC 64 }, 65 /* TMP5 -> DIETEMP */ 66 { 67 .address = 0x3c, 68 .reg = CHTDC_TI_DIETEMP 69 }, 70 }; 71 72 static int chtdc_ti_pmic_get_power(struct regmap *regmap, int reg, int bit, 73 u64 *value) 74 { 75 int data; 76 77 if (regmap_read(regmap, reg, &data)) 78 return -EIO; 79 80 *value = data & BIT(0); 81 return 0; 82 } 83 84 static int chtdc_ti_pmic_update_power(struct regmap *regmap, int reg, int bit, 85 bool on) 86 { 87 return regmap_update_bits(regmap, reg, 1, on); 88 } 89 90 static int chtdc_ti_pmic_get_raw_temp(struct regmap *regmap, int reg) 91 { 92 __be16 buf; 93 94 if (regmap_bulk_read(regmap, reg, &buf, sizeof(buf))) 95 return -EIO; 96 97 return be16_to_cpu(buf) & PMIC_REG_MASK; 98 } 99 100 static const struct intel_pmic_opregion_data chtdc_ti_pmic_opregion_data = { 101 .get_power = chtdc_ti_pmic_get_power, 102 .update_power = chtdc_ti_pmic_update_power, 103 .get_raw_temp = chtdc_ti_pmic_get_raw_temp, 104 .lpat_raw_to_temp = acpi_lpat_raw_to_temp, 105 .power_table = chtdc_ti_power_table, 106 .power_table_count = ARRAY_SIZE(chtdc_ti_power_table), 107 .thermal_table = chtdc_ti_thermal_table, 108 .thermal_table_count = ARRAY_SIZE(chtdc_ti_thermal_table), 109 .pmic_i2c_address = 0x5e, 110 }; 111 112 static int chtdc_ti_pmic_opregion_probe(struct platform_device *pdev) 113 { 114 struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent); 115 int err; 116 117 err = intel_pmic_install_opregion_handler(&pdev->dev, 118 ACPI_HANDLE(pdev->dev.parent), pmic->regmap, 119 &chtdc_ti_pmic_opregion_data); 120 if (err < 0) 121 return err; 122 123 /* Re-enumerate devices depending on PMIC */ 124 acpi_dev_clear_dependencies(ACPI_COMPANION(pdev->dev.parent)); 125 return 0; 126 } 127 128 static const struct platform_device_id chtdc_ti_pmic_opregion_id_table[] = { 129 { .name = "chtdc_ti_region" }, 130 {}, 131 }; 132 133 static struct platform_driver chtdc_ti_pmic_opregion_driver = { 134 .probe = chtdc_ti_pmic_opregion_probe, 135 .driver = { 136 .name = "cht_dollar_cove_ti_pmic", 137 }, 138 .id_table = chtdc_ti_pmic_opregion_id_table, 139 }; 140 builtin_platform_driver(chtdc_ti_pmic_opregion_driver); 141