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
57 	u16 year;  /* 1900 - 9999 */
58 	u8 month;  /* 1 - 12 */
59 	u8 day;    /* 1 - 31 */
60 	u8 hour;   /* 0 - 23 */
61 	u8 minute; /* 0 - 59 */
62 	u8 second; /* 0 - 59 */
64 	u16 msec;  /* 1 - 1000 */
65 	s16 tz;    /* -1440 to 1440 or 2047 (unspecified) */
83 	if (rt->year < 1900 || rt->year > 9999 ||  in acpi_tad_set_real_time()
84 	    rt->month < 1 || rt->month > 12 ||  in acpi_tad_set_real_time()
85 	    rt->hour > 23 || rt->minute > 59 || rt->second > 59 ||  in acpi_tad_set_real_time()
86 	    rt->tz < -1440 || (rt->tz > 1440 && rt->tz != 2047) ||  in acpi_tad_set_real_time()
87 	    rt->daylight > 3)  in acpi_tad_set_real_time()
88 		return -ERANGE;  in acpi_tad_set_real_time()
100 		return -EIO;  in acpi_tad_set_real_time()
112 	int ret = -EIO;  in acpi_tad_get_real_time()
124 	if (out_obj->type != ACPI_TYPE_BUFFER)  in acpi_tad_get_real_time()
127 	if (out_obj->buffer.length != sizeof(*rt))  in acpi_tad_get_real_time()
130 	data = (struct acpi_tad_rt *)(out_obj->buffer.pointer);  in acpi_tad_get_real_time()
131 	if (!data->valid)  in acpi_tad_get_real_time()
162 	int val, ret = -ENODATA;  in time_store()
166 		return -ENOMEM;  in time_store()
251 static int acpi_tad_wake_set(struct device *dev, char *method, u32 timer_id,  in acpi_tad_wake_set()  argument
271 	status = acpi_evaluate_integer(handle, method, &arg_list, &retval);  in acpi_tad_wake_set()
276 		return -EIO;  in acpi_tad_wake_set()
281 static int acpi_tad_wake_write(struct device *dev, const char *buf, char *method,  in acpi_tad_wake_write()  argument
295 			return -EINVAL;  in acpi_tad_wake_write()
298 	return acpi_tad_wake_set(dev, method, timer_id, value);  in acpi_tad_wake_write()
301 static ssize_t acpi_tad_wake_read(struct device *dev, char *buf, char *method,  in acpi_tad_wake_read()  argument
319 	status = acpi_evaluate_integer(handle, method, &arg_list, &retval);  in acpi_tad_wake_read()
324 		return -EIO;  in acpi_tad_wake_read()
380 		return -EIO;  in acpi_tad_clear_status()
394 		return -EINVAL;  in acpi_tad_status_write()
421 		return -EIO;  in acpi_tad_status_read()
431 	return sprintf(buf, "0x%02X\n", dd->capabilities);  in caps_show()
560 	struct device *dev = &pdev->dev;  in acpi_tad_remove()
568 	if (dd->capabilities & ACPI_TAD_DC_WAKE)  in acpi_tad_remove()
569 		sysfs_remove_group(&dev->kobj, &acpi_tad_dc_attr_group);  in acpi_tad_remove()
571 	sysfs_remove_group(&dev->kobj, &acpi_tad_attr_group);  in acpi_tad_remove()
575 	if (dd->capabilities & ACPI_TAD_DC_WAKE) {  in acpi_tad_remove()
587 	struct device *dev = &pdev->dev;  in acpi_tad_probe()
597 		return -ENODEV;  in acpi_tad_probe()
606 		ret = -ENODEV;  in acpi_tad_probe()
612 		ret = -ENODEV;  in acpi_tad_probe()
618 		ret = -ENODEV;  in acpi_tad_probe()
624 		ret = -ENOMEM;  in acpi_tad_probe()
628 	dd->capabilities = caps;  in acpi_tad_probe()
633 	 * simply enable system wakeup and runtime PM and put the device into  in acpi_tad_probe()
648 	ret = sysfs_create_group(&dev->kobj, &acpi_tad_attr_group);  in acpi_tad_probe()
653 		ret = sysfs_create_group(&dev->kobj, &acpi_tad_dc_attr_group);  in acpi_tad_probe()
659 		ret = sysfs_create_group(&dev->kobj, &acpi_tad_time_attr_group);  in acpi_tad_probe()
683 		.name = "acpi-tad",