1 // SPDX-License-Identifier: GPL-2.0+
3 * Device access for Dialog DA9063 modules
5 * Copyright 2012 Dialog Semiconductors Ltd.
6 * Copyright 2013 Philipp Zabel, Pengutronix
8 * Author: Krystian Garbaciak, Dialog Semiconductor
9 * Author: Michal Hajduk, Dialog Semiconductor
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>
24 #include <linux/mfd/da9063/core.h>
25 #include <linux/mfd/da9063/pdata.h>
26 #include <linux/mfd/da9063/registers.h>
28 #include <linux/proc_fs.h>
29 #include <linux/kthread.h>
30 #include <linux/uaccess.h>
33 static struct resource da9063_regulators_resources[] = {
36 .start = DA9063_IRQ_LDO_LIM,
37 .end = DA9063_IRQ_LDO_LIM,
38 .flags = IORESOURCE_IRQ,
42 static struct resource da9063_rtc_resources[] = {
45 .start = DA9063_IRQ_ALARM,
46 .end = DA9063_IRQ_ALARM,
47 .flags = IORESOURCE_IRQ,
51 .start = DA9063_IRQ_TICK,
52 .end = DA9063_IRQ_TICK,
53 .flags = IORESOURCE_IRQ,
57 static struct resource da9063_onkey_resources[] = {
60 .start = DA9063_IRQ_ONKEY,
61 .end = DA9063_IRQ_ONKEY,
62 .flags = IORESOURCE_IRQ,
66 static struct resource da9063_hwmon_resources[] = {
68 .start = DA9063_IRQ_ADC_RDY,
69 .end = DA9063_IRQ_ADC_RDY,
70 .flags = IORESOURCE_IRQ,
75 static const struct mfd_cell da9063_common_devs[] = {
77 .name = DA9063_DRVNAME_REGULATORS,
78 .num_resources = ARRAY_SIZE(da9063_regulators_resources),
79 .resources = da9063_regulators_resources,
82 .name = DA9063_DRVNAME_LEDS,
85 .name = DA9063_DRVNAME_WATCHDOG,
86 .of_compatible = "dlg,da9063-watchdog",
89 .name = DA9063_DRVNAME_HWMON,
90 .num_resources = ARRAY_SIZE(da9063_hwmon_resources),
91 .resources = da9063_hwmon_resources,
94 .name = DA9063_DRVNAME_ONKEY,
95 .num_resources = ARRAY_SIZE(da9063_onkey_resources),
96 .resources = da9063_onkey_resources,
97 .of_compatible = "dlg,da9063-onkey",
100 .name = DA9063_DRVNAME_VIBRATION,
104 /* Only present on DA9063 , not on DA9063L */
105 static const struct mfd_cell da9063_devs[] = {
107 .name = DA9063_DRVNAME_RTC,
108 .num_resources = ARRAY_SIZE(da9063_rtc_resources),
109 .resources = da9063_rtc_resources,
110 .of_compatible = "dlg,da9063-rtc",
114 static int da9063_clear_fault_log(struct da9063 *da9063)
119 ret = regmap_read(da9063->regmap, DA9063_REG_FAULT_LOG, &fault_log);
121 dev_err(da9063->dev, "Cannot read FAULT_LOG.\n");
126 if (fault_log & DA9063_TWD_ERROR)
128 "Fault log entry detected: DA9063_TWD_ERROR\n");
129 if (fault_log & DA9063_POR)
131 "Fault log entry detected: DA9063_POR\n");
132 if (fault_log & DA9063_VDD_FAULT)
134 "Fault log entry detected: DA9063_VDD_FAULT\n");
135 if (fault_log & DA9063_VDD_START)
137 "Fault log entry detected: DA9063_VDD_START\n");
138 if (fault_log & DA9063_TEMP_CRIT)
140 "Fault log entry detected: DA9063_TEMP_CRIT\n");
141 if (fault_log & DA9063_KEY_RESET)
143 "Fault log entry detected: DA9063_KEY_RESET\n");
144 if (fault_log & DA9063_NSHUTDOWN)
146 "Fault log entry detected: DA9063_NSHUTDOWN\n");
147 if (fault_log & DA9063_WAIT_SHUT)
149 "Fault log entry detected: DA9063_WAIT_SHUT\n");
152 ret = regmap_write(da9063->regmap,
153 DA9063_REG_FAULT_LOG,
157 "Cannot reset FAULT_LOG values %d\n", ret);
162 int da9063_device_init(struct da9063 *da9063, unsigned int irq)
164 struct da9063_pdata *pdata = da9063->dev->platform_data;
165 int model, variant_id, variant_code;
168 ret = da9063_clear_fault_log(da9063);
170 dev_err(da9063->dev, "Cannot clear fault log\n");
173 da9063->flags = pdata->flags;
174 da9063->irq_base = pdata->irq_base;
177 da9063->irq_base = -1;
179 da9063->chip_irq = irq;
181 if (pdata && pdata->init != NULL) {
182 ret = pdata->init(da9063);
185 "Platform initialization failed.\n");
190 ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_ID, &model);
192 dev_err(da9063->dev, "Cannot read chip model id.\n");
195 if (model != PMIC_CHIP_ID_DA9063) {
196 dev_err(da9063->dev, "Invalid chip model id: 0x%02x\n", model);
200 ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id);
202 dev_err(da9063->dev, "Cannot read chip variant id.\n");
206 variant_code = variant_id >> DA9063_CHIP_VARIANT_SHIFT;
208 dev_info(da9063->dev,
209 "Device detected (chip-ID: 0x%02X, var-ID: 0x%02X)\n",
212 if (variant_code < PMIC_DA9063_BB && variant_code != PMIC_DA9063_AD) {
214 "Cannot support variant code: 0x%02X\n", variant_code);
218 da9063->variant_code = variant_code;
220 ret = da9063_irq_init(da9063);
222 dev_err(da9063->dev, "Cannot initialize interrupts.\n");
226 da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq);
228 ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE,
230 ARRAY_SIZE(da9063_common_devs),
231 NULL, da9063->irq_base, NULL);
233 dev_err(da9063->dev, "Failed to add child devices\n");
237 if (da9063->type == PMIC_TYPE_DA9063) {
238 ret = devm_mfd_add_devices(da9063->dev, PLATFORM_DEVID_NONE,
239 da9063_devs, ARRAY_SIZE(da9063_devs),
240 NULL, da9063->irq_base, NULL);
242 dev_err(da9063->dev, "Failed to add child devices\n");
250 MODULE_DESCRIPTION("PMIC driver for Dialog DA9063");
251 MODULE_AUTHOR("Krystian Garbaciak");
252 MODULE_AUTHOR("Michal Hajduk");
253 MODULE_LICENSE("GPL");