1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * OnKey device driver for DA9063, DA9062 and DA9061 PMICs
4 * Copyright (C) 2015 Dialog Semiconductor Ltd.
7 #include <linux/module.h>
8 #include <linux/errno.h>
9 #include <linux/input.h>
10 #include <linux/interrupt.h>
11 #include <linux/platform_device.h>
12 #include <linux/workqueue.h>
13 #include <linux/regmap.h>
15 #include <linux/mfd/da9063/core.h>
16 #include <linux/mfd/da9063/pdata.h>
17 #include <linux/mfd/da9063/registers.h>
18 #include <linux/mfd/da9062/core.h>
19 #include <linux/mfd/da9062/registers.h>
21 struct da906x_chip_config
{
24 int onkey_pwr_signalling
;
28 int onkey_nonkey_mask
;
29 int onkey_nonkey_lock_mask
;
30 int onkey_key_reset_mask
;
31 int onkey_shutdown_mask
;
37 struct delayed_work work
;
38 struct input_dev
*input
;
40 struct regmap
*regmap
;
41 const struct da906x_chip_config
*config
;
46 static const struct da906x_chip_config da9063_regs
= {
48 .onkey_status
= DA9063_REG_STATUS_A
,
49 .onkey_pwr_signalling
= DA9063_REG_CONTROL_B
,
50 .onkey_fault_log
= DA9063_REG_FAULT_LOG
,
51 .onkey_shutdown
= DA9063_REG_CONTROL_F
,
53 .onkey_nonkey_mask
= DA9063_NONKEY
,
54 .onkey_nonkey_lock_mask
= DA9063_NONKEY_LOCK
,
55 .onkey_key_reset_mask
= DA9063_KEY_RESET
,
56 .onkey_shutdown_mask
= DA9063_SHUTDOWN
,
58 .name
= DA9063_DRVNAME_ONKEY
,
61 static const struct da906x_chip_config da9062_regs
= {
63 .onkey_status
= DA9062AA_STATUS_A
,
64 .onkey_pwr_signalling
= DA9062AA_CONTROL_B
,
65 .onkey_fault_log
= DA9062AA_FAULT_LOG
,
66 .onkey_shutdown
= DA9062AA_CONTROL_F
,
68 .onkey_nonkey_mask
= DA9062AA_NONKEY_MASK
,
69 .onkey_nonkey_lock_mask
= DA9062AA_NONKEY_LOCK_MASK
,
70 .onkey_key_reset_mask
= DA9062AA_KEY_RESET_MASK
,
71 .onkey_shutdown_mask
= DA9062AA_SHUTDOWN_MASK
,
73 .name
= "da9062-onkey",
76 static const struct of_device_id da9063_compatible_reg_id_table
[] = {
77 { .compatible
= "dlg,da9063-onkey", .data
= &da9063_regs
},
78 { .compatible
= "dlg,da9062-onkey", .data
= &da9062_regs
},
81 MODULE_DEVICE_TABLE(of
, da9063_compatible_reg_id_table
);
83 static void da9063_poll_on(struct work_struct
*work
)
85 struct da9063_onkey
*onkey
= container_of(work
,
88 const struct da906x_chip_config
*config
= onkey
->config
;
94 /* Poll to see when the pin is released */
95 error
= regmap_read(onkey
->regmap
,
100 "Failed to read ON status: %d\n", error
);
104 if (!(val
& config
->onkey_nonkey_mask
)) {
105 error
= regmap_update_bits(onkey
->regmap
,
106 config
->onkey_pwr_signalling
,
107 config
->onkey_nonkey_lock_mask
,
111 "Failed to reset the Key Delay %d\n", error
);
115 input_report_key(onkey
->input
, KEY_POWER
, 0);
116 input_sync(onkey
->input
);
122 * If the fault log KEY_RESET is detected, then clear it
123 * and shut down the system.
125 error
= regmap_read(onkey
->regmap
,
126 config
->onkey_fault_log
,
129 dev_warn(&onkey
->input
->dev
,
130 "Cannot read FAULT_LOG: %d\n", error
);
131 } else if (fault_log
& config
->onkey_key_reset_mask
) {
132 error
= regmap_write(onkey
->regmap
,
133 config
->onkey_fault_log
,
134 config
->onkey_key_reset_mask
);
136 dev_warn(&onkey
->input
->dev
,
137 "Cannot reset KEY_RESET fault log: %d\n",
140 /* at this point we do any S/W housekeeping
141 * and then send shutdown command
143 dev_dbg(&onkey
->input
->dev
,
144 "Sending SHUTDOWN to PMIC ...\n");
145 error
= regmap_write(onkey
->regmap
,
146 config
->onkey_shutdown
,
147 config
->onkey_shutdown_mask
);
149 dev_err(&onkey
->input
->dev
,
150 "Cannot SHUTDOWN PMIC: %d\n",
157 schedule_delayed_work(&onkey
->work
, msecs_to_jiffies(50));
160 static irqreturn_t
da9063_onkey_irq_handler(int irq
, void *data
)
162 struct da9063_onkey
*onkey
= data
;
163 const struct da906x_chip_config
*config
= onkey
->config
;
167 error
= regmap_read(onkey
->regmap
,
168 config
->onkey_status
,
170 if (onkey
->key_power
&& !error
&& (val
& config
->onkey_nonkey_mask
)) {
171 input_report_key(onkey
->input
, KEY_POWER
, 1);
172 input_sync(onkey
->input
);
173 schedule_delayed_work(&onkey
->work
, 0);
174 dev_dbg(onkey
->dev
, "KEY_POWER long press.\n");
176 input_report_key(onkey
->input
, KEY_POWER
, 1);
177 input_sync(onkey
->input
);
178 input_report_key(onkey
->input
, KEY_POWER
, 0);
179 input_sync(onkey
->input
);
180 dev_dbg(onkey
->dev
, "KEY_POWER short press.\n");
186 static void da9063_cancel_poll(void *data
)
188 struct da9063_onkey
*onkey
= data
;
190 cancel_delayed_work_sync(&onkey
->work
);
193 static int da9063_onkey_probe(struct platform_device
*pdev
)
195 struct da9063
*da9063
= dev_get_drvdata(pdev
->dev
.parent
);
196 struct da9063_pdata
*pdata
= dev_get_platdata(da9063
->dev
);
197 struct da9063_onkey
*onkey
;
198 const struct of_device_id
*match
;
202 match
= of_match_node(da9063_compatible_reg_id_table
,
207 onkey
= devm_kzalloc(&pdev
->dev
, sizeof(struct da9063_onkey
),
210 dev_err(&pdev
->dev
, "Failed to allocate memory.\n");
214 onkey
->config
= match
->data
;
215 onkey
->dev
= &pdev
->dev
;
217 onkey
->regmap
= dev_get_regmap(pdev
->dev
.parent
, NULL
);
218 if (!onkey
->regmap
) {
219 dev_err(&pdev
->dev
, "Parent regmap unavailable.\n");
224 onkey
->key_power
= pdata
->key_power
;
227 !of_property_read_bool(pdev
->dev
.of_node
,
228 "dlg,disable-key-power");
230 onkey
->input
= devm_input_allocate_device(&pdev
->dev
);
232 dev_err(&pdev
->dev
, "Failed to allocated input device.\n");
236 onkey
->input
->name
= onkey
->config
->name
;
237 snprintf(onkey
->phys
, sizeof(onkey
->phys
), "%s/input0",
238 onkey
->config
->name
);
239 onkey
->input
->phys
= onkey
->phys
;
240 onkey
->input
->dev
.parent
= &pdev
->dev
;
242 if (onkey
->key_power
)
243 input_set_capability(onkey
->input
, EV_KEY
, KEY_POWER
);
245 input_set_capability(onkey
->input
, EV_KEY
, KEY_SLEEP
);
247 INIT_DELAYED_WORK(&onkey
->work
, da9063_poll_on
);
249 error
= devm_add_action(&pdev
->dev
, da9063_cancel_poll
, onkey
);
252 "Failed to add cancel poll action: %d\n",
257 irq
= platform_get_irq_byname(pdev
, "ONKEY");
260 dev_err(&pdev
->dev
, "Failed to get platform IRQ: %d\n", error
);
264 error
= devm_request_threaded_irq(&pdev
->dev
, irq
,
265 NULL
, da9063_onkey_irq_handler
,
266 IRQF_TRIGGER_LOW
| IRQF_ONESHOT
,
270 "Failed to request IRQ %d: %d\n", irq
, error
);
274 error
= input_register_device(onkey
->input
);
277 "Failed to register input device: %d\n", error
);
284 static struct platform_driver da9063_onkey_driver
= {
285 .probe
= da9063_onkey_probe
,
287 .name
= DA9063_DRVNAME_ONKEY
,
288 .of_match_table
= da9063_compatible_reg_id_table
,
291 module_platform_driver(da9063_onkey_driver
);
293 MODULE_AUTHOR("S Twiss <stwiss.opensource@diasemi.com>");
294 MODULE_DESCRIPTION("Onkey device driver for Dialog DA9063, DA9062 and DA9061");
295 MODULE_LICENSE("GPL");
296 MODULE_ALIAS("platform:" DA9063_DRVNAME_ONKEY
);