1 // SPDX-License-Identifier: GPL-2.0
10  * It only supports the system wakeup capabilities of the TAD.
13  * allowing user space to manage the AC and DC wakeup timers of the TAD:
19  * The wakeup events handling and power management of the TAD is expected to
56 	u16 year;  /* 1900 - 9999 */
57 	u8 month;  /* 1 - 12 */
58 	u8 day;    /* 1 - 31 */
59 	u8 hour;   /* 0 - 23 */
60 	u8 minute; /* 0 - 59 */
61 	u8 second; /* 0 - 59 */
63 	u16 msec;  /* 1 - 1000 */
64 	s16 tz;    /* -1440 to 1440 or 2047 (unspecified) */
82 	if (rt->year < 1900 || rt->year > 9999 ||  in acpi_tad_set_real_time()
83 	    rt->month < 1 || rt->month > 12 ||  in acpi_tad_set_real_time()
84 	    rt->hour > 23 || rt->minute > 59 || rt->second > 59 ||  in acpi_tad_set_real_time()
85 	    rt->tz < -1440 || (rt->tz > 1440 && rt->tz != 2047) ||  in acpi_tad_set_real_time()
86 	    rt->daylight > 3)  in acpi_tad_set_real_time()
87 		return -ERANGE;  in acpi_tad_set_real_time()
99 		return -EIO;  in acpi_tad_set_real_time()
111 	int ret = -EIO;  in acpi_tad_get_real_time()
123 	if (out_obj->type != ACPI_TYPE_BUFFER)  in acpi_tad_get_real_time()
126 	if (out_obj->buffer.length != sizeof(*rt))  in acpi_tad_get_real_time()
129 	data = (struct acpi_tad_rt *)(out_obj->buffer.pointer);  in acpi_tad_get_real_time()
130 	if (!data->valid)  in acpi_tad_get_real_time()
161 	int val, ret = -ENODATA;  in time_store()
165 		return -ENOMEM;  in time_store()
250 static int acpi_tad_wake_set(struct device *dev, char *method, u32 timer_id,  in acpi_tad_wake_set()  argument
270 	status = acpi_evaluate_integer(handle, method, &arg_list, &retval);  in acpi_tad_wake_set()
275 		return -EIO;  in acpi_tad_wake_set()
280 static int acpi_tad_wake_write(struct device *dev, const char *buf, char *method,  in acpi_tad_wake_write()  argument
294 			return -EINVAL;  in acpi_tad_wake_write()
297 	return acpi_tad_wake_set(dev, method, timer_id, value);  in acpi_tad_wake_write()
300 static ssize_t acpi_tad_wake_read(struct device *dev, char *buf, char *method,  in acpi_tad_wake_read()  argument
318 	status = acpi_evaluate_integer(handle, method, &arg_list, &retval);  in acpi_tad_wake_read()
323 		return -EIO;  in acpi_tad_wake_read()
379 		return -EIO;  in acpi_tad_clear_status()
393 		return -EINVAL;  in acpi_tad_status_write()
420 		return -EIO;  in acpi_tad_status_read()
430 	return sprintf(buf, "0x%02X\n", dd->capabilities);  in caps_show()
559 	struct device *dev = &pdev->dev;  in acpi_tad_remove()
566 	if (dd->capabilities & ACPI_TAD_DC_WAKE)  in acpi_tad_remove()
567 		sysfs_remove_group(&dev->kobj, &acpi_tad_dc_attr_group);  in acpi_tad_remove()
569 	sysfs_remove_group(&dev->kobj, &acpi_tad_attr_group);  in acpi_tad_remove()
573 	if (dd->capabilities & ACPI_TAD_DC_WAKE) {  in acpi_tad_remove()
585 	struct device *dev = &pdev->dev;  in acpi_tad_probe()
599 		return -ENODEV;  in acpi_tad_probe()
604 		return -ENODEV;  in acpi_tad_probe()
609 		return -ENODEV;  in acpi_tad_probe()
614 		return -ENOMEM;  in acpi_tad_probe()
616 	dd->capabilities = caps;  in acpi_tad_probe()
621 	 * simply enable system wakeup and runtime PM and put the device into  in acpi_tad_probe()
636 	ret = sysfs_create_group(&dev->kobj, &acpi_tad_attr_group);  in acpi_tad_probe()
641 		ret = sysfs_create_group(&dev->kobj, &acpi_tad_dc_attr_group);  in acpi_tad_probe()
647 		ret = sysfs_create_group(&dev->kobj, &acpi_tad_time_attr_group);  in acpi_tad_probe()
666 		.name = "acpi-tad",