Loading...
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
32static const 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
41static const 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
56static const 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
65static const 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
74static 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 */
104static 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
113static 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
161int 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
203MODULE_DESCRIPTION("PMIC driver for Dialog DA9063");
204MODULE_AUTHOR("Krystian Garbaciak");
205MODULE_AUTHOR("Michal Hajduk");
206MODULE_LICENSE("GPL");
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 *
7 * Author: Krystian Garbaciak <krystian.garbaciak@diasemi.com>,
8 * Michal Hajduk <michal.hajduk@diasemi.com>
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
37static 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
46static 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
61static struct resource da9063_onkey_resources[] = {
62 {
63 .name = "ONKEY",
64 .start = DA9063_IRQ_ONKEY,
65 .end = DA9063_IRQ_ONKEY,
66 .flags = IORESOURCE_IRQ,
67 },
68};
69
70static 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
79static const struct mfd_cell da9063_devs[] = {
80 {
81 .name = DA9063_DRVNAME_REGULATORS,
82 .num_resources = ARRAY_SIZE(da9063_regulators_resources),
83 .resources = da9063_regulators_resources,
84 },
85 {
86 .name = DA9063_DRVNAME_LEDS,
87 },
88 {
89 .name = DA9063_DRVNAME_WATCHDOG,
90 .of_compatible = "dlg,da9063-watchdog",
91 },
92 {
93 .name = DA9063_DRVNAME_HWMON,
94 .num_resources = ARRAY_SIZE(da9063_hwmon_resources),
95 .resources = da9063_hwmon_resources,
96 },
97 {
98 .name = DA9063_DRVNAME_ONKEY,
99 .num_resources = ARRAY_SIZE(da9063_onkey_resources),
100 .resources = da9063_onkey_resources,
101 .of_compatible = "dlg,da9063-onkey",
102 },
103 {
104 .name = DA9063_DRVNAME_RTC,
105 .num_resources = ARRAY_SIZE(da9063_rtc_resources),
106 .resources = da9063_rtc_resources,
107 .of_compatible = "dlg,da9063-rtc",
108 },
109 {
110 .name = DA9063_DRVNAME_VIBRATION,
111 },
112};
113
114static 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
162int da9063_device_init(struct da9063 *da9063, unsigned int irq)
163{
164 struct da9063_pdata *pdata = da9063->dev->platform_data;
165 int model, variant_id, variant_code;
166 int ret;
167
168 ret = da9063_clear_fault_log(da9063);
169 if (ret < 0)
170 dev_err(da9063->dev, "Cannot clear fault log\n");
171
172 if (pdata) {
173 da9063->flags = pdata->flags;
174 da9063->irq_base = pdata->irq_base;
175 } else {
176 da9063->flags = 0;
177 da9063->irq_base = -1;
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
200 ret = regmap_read(da9063->regmap, DA9063_REG_CHIP_VARIANT, &variant_id);
201 if (ret < 0) {
202 dev_err(da9063->dev, "Cannot read chip variant id.\n");
203 return -EIO;
204 }
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
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);
215 return -ENODEV;
216 }
217
218 da9063->model = model;
219 da9063->variant_code = variant_code;
220
221 ret = da9063_irq_init(da9063);
222 if (ret) {
223 dev_err(da9063->dev, "Cannot initialize interrupts.\n");
224 return ret;
225 }
226
227 da9063->irq_base = regmap_irq_chip_get_base(da9063->regmap_irq);
228
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
238void da9063_device_exit(struct da9063 *da9063)
239{
240 mfd_remove_devices(da9063->dev);
241 da9063_irq_exit(da9063);
242}
243
244MODULE_DESCRIPTION("PMIC driver for Dialog DA9063");
245MODULE_AUTHOR("Krystian Garbaciak <krystian.garbaciak@diasemi.com>, Michal Hajduk <michal.hajduk@diasemi.com>");
246MODULE_LICENSE("GPL");