1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Device access for Dialog DA9063 modules 4 * 5 * Copyright 2012 Dialog Semiconductors Ltd. 6 * Copyright 2013 Philipp Zabel, Pengutronix 7 * 8 * Author: Krystian Garbaciak, Dialog Semiconductor 9 * Author: Michal Hajduk, Dialog Semiconductor 10 * 11 */ 12 13 #include <linux/kernel.h> 14 #include <linux/module.h> 15 #include <linux/init.h> 16 #include <linux/slab.h> 17 #include <linux/device.h> 18 #include <linux/delay.h> 19 #include <linux/interrupt.h> 20 #include <linux/mutex.h> 21 #include <linux/mfd/core.h> 22 #include <linux/regmap.h> 23 24 #include <linux/mfd/da9063/core.h> 25 #include <linux/mfd/da9063/registers.h> 26 27 #include <linux/proc_fs.h> 28 #include <linux/kthread.h> 29 #include <linux/uaccess.h> 30 31 32 static struct resource da9063_regulators_resources[] = { 33 { 34 .name = "LDO_LIM", 35 .start = DA9063_IRQ_LDO_LIM, 36 .end = DA9063_IRQ_LDO_LIM, 37 .flags = IORESOURCE_IRQ, 38 }, 39 }; 40 41 static struct resource da9063_rtc_resources[] = { 42 { 43 .name = "ALARM", 44 .start = DA9063_IRQ_ALARM, 45 .end = DA9063_IRQ_ALARM, 46 .flags = IORESOURCE_IRQ, 47 }, 48 { 49 .name = "TICK", 50 .start = DA9063_IRQ_TICK, 51 .end = DA9063_IRQ_TICK, 52 .flags = IORESOURCE_IRQ, 53 } 54 }; 55 56 static struct resource da9063_onkey_resources[] = { 57 { 58 .name = "ONKEY", 59 .start = DA9063_IRQ_ONKEY, 60 .end = DA9063_IRQ_ONKEY, 61 .flags = IORESOURCE_IRQ, 62 }, 63 }; 64 65 static struct resource da9063_hwmon_resources[] = { 66 { 67 .start = DA9063_IRQ_ADC_RDY, 68 .end = DA9063_IRQ_ADC_RDY, 69 .flags = IORESOURCE_IRQ, 70 }, 71 }; 72 73 74 static const struct mfd_cell da9063_common_devs[] = { 75 { 76 .name = DA9063_DRVNAME_REGULATORS, 77 .num_resources = ARRAY_SIZE(da9063_regulators_resources), 78 .resources = da9063_regulators_resources, 79 }, 80 { 81 .name = DA9063_DRVNAME_LEDS, 82 }, 83 { 84 .name = DA9063_DRVNAME_WATCHDOG, 85 .of_compatible = "dlg,da9063-watchdog", 86 }, 87 { 88 .name = DA9063_DRVNAME_HWMON, 89 .num_resources = ARRAY_SIZE(da9063_hwmon_resources), 90 .resources = da9063_hwmon_resources, 91 }, 92 { 93 .name = DA9063_DRVNAME_ONKEY, 94 .num_resources = ARRAY_SIZE(da9063_onkey_resources), 95 .resources = da9063_onkey_resources, 96 .of_compatible = "dlg,da9063-onkey", 97 }, 98 { 99 .name = DA9063_DRVNAME_VIBRATION, 100 }, 101 }; 102 103 /* Only present on DA9063 , not on DA9063L */ 104 static const struct mfd_cell da9063_devs[] = { 105 { 106 .name = DA9063_DRVNAME_RTC, 107 .num_resources = ARRAY_SIZE(da9063_rtc_resources), 108 .resources = da9063_rtc_resources, 109 .of_compatible = "dlg,da9063-rtc", 110 }, 111 }; 112 113 static int da9063_clear_fault_log(struct da9063 *da9063) 114 { 115 int ret = 0; 116 int fault_log = 0; 117 118 ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log); 119 if (ret < 0) { 120 dev_err(da9063->dev, "Cannot read FAULT_LOG.\n"); 121 return -EIO; 122 } 123 124 if (fault_log) { 125 if (fault_log & DA9063_TWD_ERROR) 126 dev_dbg(da9063->dev, 127 "Fault log entry detected: DA9063_TWD_ERROR\n"); 128 if (fault_log & DA9063_POR) 129 dev_dbg(da9063->dev, 130 "Fault log entry detected: DA9063_POR\n"); 131 if (fault_log & DA9063_VDD_FAULT) 132 dev_dbg(da9063->dev, 133 "Fault log entry detected: DA9063_VDD_FAULT\n"); 134 if (fault_log & DA9063_VDD_START) 135 dev_dbg(da9063->dev, 136 "Fault log entry detected: DA9063_VDD_START\n"); 137 if (fault_log & DA9063_TEMP_CRIT) 138 dev_dbg(da9063->dev, 139 "Fault log entry detected: DA9063_TEMP_CRIT\n"); 140 if (fault_log & DA9063_KEY_RESET) 141 dev_dbg(da9063->dev, 142 "Fault log entry detected: DA9063_KEY_RESET\n"); 143 if (fault_log & DA9063_NSHUTDOWN) 144 dev_dbg(da9063->dev, 145 "Fault log entry detected: DA9063_NSHUTDOWN\n"); 146 if (fault_log & DA9063_WAIT_SHUT) 147 dev_dbg(da9063->dev, 148 "Fault log entry detected: DA9063_WAIT_SHUT\n"); 149 } 150 151 ret = regmap_write(da9063->regmap, 152 DA9063_REG_FAULT_LOG, 153 fault_log); 154 if (ret < 0) 155 dev_err(da9063->dev, 156 "Cannot reset FAULT_LOG values %d\n", ret); 157 158 return ret; 159 } 160 161 int da9063_device_init(struct da9063 *da9063, unsigned int irq) 162 { 163 int ret; 164 165 ret = da9063_clear_fault_log(da9063); 166 if (ret < 0) 167 dev_err(da9063->dev, "Cannot clear fault log\n"); 168 169 da9063->flags = 0; 170 da9063->irq_base = -1; 171 da9063->chip_irq = irq; 172 173 ret = da9063_irq_init(da9063); 174 if (ret) { 175 dev_err(da9063->dev, "Cannot initialize interrupts.\n"); 176 return ret; 177 } 178 179 da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq); 180 181 ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, 182 da9063_common_devs, 183 ARRAY_SIZE(da9063_common_devs), 184 NULL, da9063->irq_base, NULL); 185 if (ret) { 186 dev_err(da9063->dev, "Failed to add child devices\n"); 187 return ret; 188 } 189 190 if (da9063->type == PMIC_TYPE_DA9063) { 191 ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE, 192 da9063_devs, ARRAY_SIZE(da9063_devs), 193 NULL, da9063->irq_base, NULL); 194 if (ret) { 195 dev_err(da9063->dev, "Failed to add child devices\n"); 196 return ret; 197 } 198 } 199 200 return ret; 201 } 202 203 MODULE_DESCRIPTION("PMIC driver for Dialog DA9063"); 204 MODULE_AUTHOR("Krystian Garbaciak"); 205 MODULE_AUTHOR("Michal Hajduk"); 206 MODULE_LICENSE("GPL"); 207