Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 1 | /* |
| 2 | * da9063-core.c: Device access for Dialog DA9063 modules |
| 3 | * |
| 4 | * Copyright 2012 Dialog Semiconductors Ltd. |
| 5 | * Copyright 2013 Philipp Zabel, Pengutronix |
| 6 | * |
Steve Twiss | 37778d8 | 2016-08-08 14:16:11 +0100 | [diff] [blame] | 7 | * Author: Krystian Garbaciak, Dialog Semiconductor |
| 8 | * Author: Michal Hajduk, Dialog Semiconductor |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms of the GNU General Public License as published by the |
| 12 | * Free Software Foundation; either version 2 of the License, or (at your |
| 13 | * option) any later version. |
| 14 | * |
| 15 | */ |
| 16 | |
| 17 | #include <linux/kernel.h> |
| 18 | #include <linux/module.h> |
| 19 | #include <linux/init.h> |
| 20 | #include <linux/slab.h> |
| 21 | #include <linux/device.h> |
| 22 | #include <linux/delay.h> |
| 23 | #include <linux/interrupt.h> |
| 24 | #include <linux/mutex.h> |
| 25 | #include <linux/mfd/core.h> |
| 26 | #include <linux/regmap.h> |
| 27 | |
| 28 | #include <linux/mfd/da9063/core.h> |
| 29 | #include <linux/mfd/da9063/pdata.h> |
| 30 | #include <linux/mfd/da9063/registers.h> |
| 31 | |
| 32 | #include <linux/proc_fs.h> |
| 33 | #include <linux/kthread.h> |
| 34 | #include <linux/uaccess.h> |
| 35 | |
| 36 | |
Krystian Garbaciak | a0e08b8 | 2013-07-29 19:00:44 +0200 | [diff] [blame] | 37 | static struct resource da9063_regulators_resources[] = { |
| 38 | { |
| 39 | .name = "LDO_LIM", |
| 40 | .start = DA9063_IRQ_LDO_LIM, |
| 41 | .end = DA9063_IRQ_LDO_LIM, |
| 42 | .flags = IORESOURCE_IRQ, |
| 43 | }, |
| 44 | }; |
| 45 | |
| 46 | static struct resource da9063_rtc_resources[] = { |
| 47 | { |
| 48 | .name = "ALARM", |
| 49 | .start = DA9063_IRQ_ALARM, |
| 50 | .end = DA9063_IRQ_ALARM, |
| 51 | .flags = IORESOURCE_IRQ, |
| 52 | }, |
| 53 | { |
| 54 | .name = "TICK", |
| 55 | .start = DA9063_IRQ_TICK, |
| 56 | .end = DA9063_IRQ_TICK, |
| 57 | .flags = IORESOURCE_IRQ, |
| 58 | } |
| 59 | }; |
| 60 | |
| 61 | static struct resource da9063_onkey_resources[] = { |
| 62 | { |
Steve Twiss | 9011e4a | 2015-05-19 11:32:45 +0100 | [diff] [blame] | 63 | .name = "ONKEY", |
Krystian Garbaciak | a0e08b8 | 2013-07-29 19:00:44 +0200 | [diff] [blame] | 64 | .start = DA9063_IRQ_ONKEY, |
| 65 | .end = DA9063_IRQ_ONKEY, |
| 66 | .flags = IORESOURCE_IRQ, |
| 67 | }, |
| 68 | }; |
| 69 | |
| 70 | static struct resource da9063_hwmon_resources[] = { |
| 71 | { |
| 72 | .start = DA9063_IRQ_ADC_RDY, |
| 73 | .end = DA9063_IRQ_ADC_RDY, |
| 74 | .flags = IORESOURCE_IRQ, |
| 75 | }, |
| 76 | }; |
| 77 | |
| 78 | |
Geert Uytterhoeven | c8f675f | 2013-11-18 14:32:57 +0100 | [diff] [blame] | 79 | static const struct mfd_cell da9063_devs[] = { |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 80 | { |
| 81 | .name = DA9063_DRVNAME_REGULATORS, |
Krystian Garbaciak | a0e08b8 | 2013-07-29 19:00:44 +0200 | [diff] [blame] | 82 | .num_resources = ARRAY_SIZE(da9063_regulators_resources), |
| 83 | .resources = da9063_regulators_resources, |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 84 | }, |
| 85 | { |
| 86 | .name = DA9063_DRVNAME_LEDS, |
| 87 | }, |
| 88 | { |
| 89 | .name = DA9063_DRVNAME_WATCHDOG, |
Steve Twiss | 71e03de | 2015-01-20 13:54:25 +0000 | [diff] [blame] | 90 | .of_compatible = "dlg,da9063-watchdog", |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 91 | }, |
| 92 | { |
| 93 | .name = DA9063_DRVNAME_HWMON, |
Krystian Garbaciak | a0e08b8 | 2013-07-29 19:00:44 +0200 | [diff] [blame] | 94 | .num_resources = ARRAY_SIZE(da9063_hwmon_resources), |
| 95 | .resources = da9063_hwmon_resources, |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 96 | }, |
| 97 | { |
| 98 | .name = DA9063_DRVNAME_ONKEY, |
Krystian Garbaciak | a0e08b8 | 2013-07-29 19:00:44 +0200 | [diff] [blame] | 99 | .num_resources = ARRAY_SIZE(da9063_onkey_resources), |
| 100 | .resources = da9063_onkey_resources, |
Steve Twiss | 9011e4a | 2015-05-19 11:32:45 +0100 | [diff] [blame] | 101 | .of_compatible = "dlg,da9063-onkey", |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 102 | }, |
| 103 | { |
| 104 | .name = DA9063_DRVNAME_RTC, |
Krystian Garbaciak | a0e08b8 | 2013-07-29 19:00:44 +0200 | [diff] [blame] | 105 | .num_resources = ARRAY_SIZE(da9063_rtc_resources), |
| 106 | .resources = da9063_rtc_resources, |
Steve Twiss | 71e03de | 2015-01-20 13:54:25 +0000 | [diff] [blame] | 107 | .of_compatible = "dlg,da9063-rtc", |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 108 | }, |
| 109 | { |
| 110 | .name = DA9063_DRVNAME_VIBRATION, |
| 111 | }, |
| 112 | }; |
| 113 | |
Steve Twiss | 9011e4a | 2015-05-19 11:32:45 +0100 | [diff] [blame] | 114 | static int da9063_clear_fault_log(struct da9063 *da9063) |
| 115 | { |
| 116 | int ret = 0; |
| 117 | int fault_log = 0; |
| 118 | |
| 119 | ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log); |
| 120 | if (ret < 0) { |
| 121 | dev_err(da9063->dev, "Cannot read FAULT_LOG.\n"); |
| 122 | return -EIO; |
| 123 | } |
| 124 | |
| 125 | if (fault_log) { |
| 126 | if (fault_log & DA9063_TWD_ERROR) |
| 127 | dev_dbg(da9063->dev, |
| 128 | "Fault log entry detected: DA9063_TWD_ERROR\n"); |
| 129 | if (fault_log & DA9063_POR) |
| 130 | dev_dbg(da9063->dev, |
| 131 | "Fault log entry detected: DA9063_POR\n"); |
| 132 | if (fault_log & DA9063_VDD_FAULT) |
| 133 | dev_dbg(da9063->dev, |
| 134 | "Fault log entry detected: DA9063_VDD_FAULT\n"); |
| 135 | if (fault_log & DA9063_VDD_START) |
| 136 | dev_dbg(da9063->dev, |
| 137 | "Fault log entry detected: DA9063_VDD_START\n"); |
| 138 | if (fault_log & DA9063_TEMP_CRIT) |
| 139 | dev_dbg(da9063->dev, |
| 140 | "Fault log entry detected: DA9063_TEMP_CRIT\n"); |
| 141 | if (fault_log & DA9063_KEY_RESET) |
| 142 | dev_dbg(da9063->dev, |
| 143 | "Fault log entry detected: DA9063_KEY_RESET\n"); |
| 144 | if (fault_log & DA9063_NSHUTDOWN) |
| 145 | dev_dbg(da9063->dev, |
| 146 | "Fault log entry detected: DA9063_NSHUTDOWN\n"); |
| 147 | if (fault_log & DA9063_WAIT_SHUT) |
| 148 | dev_dbg(da9063->dev, |
| 149 | "Fault log entry detected: DA9063_WAIT_SHUT\n"); |
| 150 | } |
| 151 | |
| 152 | ret = regmap_write(da9063->regmap, |
| 153 | DA9063_REG_FAULT_LOG, |
| 154 | fault_log); |
| 155 | if (ret < 0) |
| 156 | dev_err(da9063->dev, |
| 157 | "Cannot reset FAULT_LOG values %d\n", ret); |
| 158 | |
| 159 | return ret; |
| 160 | } |
| 161 | |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 162 | int da9063_device_init(struct da9063 *da9063, unsigned int irq) |
| 163 | { |
| 164 | struct da9063_pdata *pdata = da9063->dev->platform_data; |
Opensource [Steve Twiss] | c1d12c7 | 2014-02-14 14:08:11 +0000 | [diff] [blame] | 165 | int model, variant_id, variant_code; |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 166 | int ret; |
| 167 | |
Steve Twiss | 9011e4a | 2015-05-19 11:32:45 +0100 | [diff] [blame] | 168 | ret = da9063_clear_fault_log(da9063); |
| 169 | if (ret < 0) |
| 170 | dev_err(da9063->dev, "Cannot clear fault log\n"); |
| 171 | |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 172 | if (pdata) { |
| 173 | da9063->flags = pdata->flags; |
| 174 | da9063->irq_base = pdata->irq_base; |
| 175 | } else { |
| 176 | da9063->flags = 0; |
Dmitry Lavnikevich | 439b8bd | 2014-11-21 18:29:07 +0300 | [diff] [blame] | 177 | da9063->irq_base = -1; |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 178 | } |
| 179 | da9063->chip_irq = irq; |
| 180 | |
| 181 | if (pdata && pdata->init != NULL) { |
| 182 | ret = pdata->init(da9063); |
| 183 | if (ret != 0) { |
| 184 | dev_err(da9063->dev, |
| 185 | "Platform initialization failed.\n"); |
| 186 | return ret; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_ID, &model); |
| 191 | if (ret < 0) { |
| 192 | dev_err(da9063->dev, "Cannot read chip model id.\n"); |
| 193 | return -EIO; |
| 194 | } |
| 195 | if (model != PMIC_DA9063) { |
| 196 | dev_err(da9063->dev, "Invalid chip model id: 0x%02x\n", model); |
| 197 | return -ENODEV; |
| 198 | } |
| 199 | |
Opensource [Steve Twiss] | c1d12c7 | 2014-02-14 14:08:11 +0000 | [diff] [blame] | 200 | ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id); |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 201 | if (ret < 0) { |
Opensource [Steve Twiss] | c1d12c7 | 2014-02-14 14:08:11 +0000 | [diff] [blame] | 202 | dev_err(da9063->dev, "Cannot read chip variant id.\n"); |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 203 | return -EIO; |
| 204 | } |
Opensource [Steve Twiss] | c1d12c7 | 2014-02-14 14:08:11 +0000 | [diff] [blame] | 205 | |
| 206 | variant_code = variant_id >> DA9063_CHIP_VARIANT_SHIFT; |
| 207 | |
| 208 | dev_info(da9063->dev, |
| 209 | "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n", |
| 210 | model, variant_id); |
| 211 | |
Opensource [Steve Twiss] | 9cb42e2 | 2014-07-21 11:39:33 +0100 | [diff] [blame] | 212 | if (variant_code < PMIC_DA9063_BB && variant_code != PMIC_DA9063_AD) { |
| 213 | dev_err(da9063->dev, |
| 214 | "Cannot support variant code: 0x%02X\n", variant_code); |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 215 | return -ENODEV; |
| 216 | } |
| 217 | |
| 218 | da9063->model = model; |
Opensource [Steve Twiss] | c1d12c7 | 2014-02-14 14:08:11 +0000 | [diff] [blame] | 219 | da9063->variant_code = variant_code; |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 220 | |
Krystian Garbaciak | a0e08b8 | 2013-07-29 19:00:44 +0200 | [diff] [blame] | 221 | ret = da9063_irq_init(da9063); |
| 222 | if (ret) { |
| 223 | dev_err(da9063->dev, "Cannot initialize interrupts.\n"); |
| 224 | return ret; |
| 225 | } |
| 226 | |
Dmitry Lavnikevich | 439b8bd | 2014-11-21 18:29:07 +0300 | [diff] [blame] | 227 | da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq); |
| 228 | |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 229 | ret = mfd_add_devices(da9063->dev, -1, da9063_devs, |
| 230 | ARRAY_SIZE(da9063_devs), NULL, da9063->irq_base, |
| 231 | NULL); |
| 232 | if (ret) |
| 233 | dev_err(da9063->dev, "Cannot add MFD cells\n"); |
| 234 | |
| 235 | return ret; |
| 236 | } |
| 237 | |
| 238 | void da9063_device_exit(struct da9063 *da9063) |
| 239 | { |
| 240 | mfd_remove_devices(da9063->dev); |
Krystian Garbaciak | a0e08b8 | 2013-07-29 19:00:44 +0200 | [diff] [blame] | 241 | da9063_irq_exit(da9063); |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | MODULE_DESCRIPTION("PMIC driver for Dialog DA9063"); |
Steve Twiss | 37778d8 | 2016-08-08 14:16:11 +0100 | [diff] [blame] | 245 | MODULE_AUTHOR("Krystian Garbaciak"); |
| 246 | MODULE_AUTHOR("Michal Hajduk"); |
Krystian Garbaciak | 8e68548 | 2013-07-29 19:00:43 +0200 | [diff] [blame] | 247 | MODULE_LICENSE("GPL"); |