^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * ACPI Time and Alarm (TAD) Device Driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2018 Intel Corporation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Author: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * This driver is based on Section 9.18 of the ACPI 6.2 specification revision.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * It only supports the system wakeup capabilities of the TAD.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Provided are sysfs attributes, available under the TAD platform device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * allowing user space to manage the AC and DC wakeup timers of the TAD:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * set and read their values, set and check their expire timer wake policies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * check and clear their status and check the capabilities of the TAD reported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * by AML. The DC timer attributes are only present if the TAD supports a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * separate DC alarm timer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * The wakeup events handling and power management of the TAD is expected to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * be taken care of by the ACPI PM domain attached to its platform device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/suspend.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) MODULE_AUTHOR("Rafael J. Wysocki");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) /* ACPI TAD capability flags (ACPI 6.2, Section 9.18.2) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define ACPI_TAD_AC_WAKE BIT(0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define ACPI_TAD_DC_WAKE BIT(1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define ACPI_TAD_RT BIT(2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define ACPI_TAD_RT_IN_MS BIT(3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define ACPI_TAD_S4_S5__GWS BIT(4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #define ACPI_TAD_AC_S4_WAKE BIT(5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) #define ACPI_TAD_AC_S5_WAKE BIT(6)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) #define ACPI_TAD_DC_S4_WAKE BIT(7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #define ACPI_TAD_DC_S5_WAKE BIT(8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) /* ACPI TAD alarm timer selection */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #define ACPI_TAD_AC_TIMER (u32)0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #define ACPI_TAD_DC_TIMER (u32)1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) /* Special value for disabled timer or expired timer wake policy. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #define ACPI_TAD_WAKE_DISABLED (~(u32)0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct acpi_tad_driver_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) u32 capabilities;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct acpi_tad_rt {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) u16 year; /* 1900 - 9999 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u8 month; /* 1 - 12 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) u8 day; /* 1 - 31 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) u8 hour; /* 0 - 23 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) u8 minute; /* 0 - 59 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) u8 second; /* 0 - 59 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) u8 valid; /* 0 (failed) or 1 (success) for reads, 0 for writes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) u16 msec; /* 1 - 1000 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) s16 tz; /* -1440 to 1440 or 2047 (unspecified) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) u8 daylight;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) u8 padding[3]; /* must be 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) } __packed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static int acpi_tad_set_real_time(struct device *dev, struct acpi_tad_rt *rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) acpi_handle handle = ACPI_HANDLE(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) union acpi_object args[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) { .type = ACPI_TYPE_BUFFER, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) struct acpi_object_list arg_list = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) .pointer = args,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) .count = ARRAY_SIZE(args),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) unsigned long long retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (rt->year < 1900 || rt->year > 9999 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) rt->month < 1 || rt->month > 12 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) rt->hour > 23 || rt->minute > 59 || rt->second > 59 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) rt->tz < -1440 || (rt->tz > 1440 && rt->tz != 2047) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) rt->daylight > 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return -ERANGE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) args[0].buffer.pointer = (u8 *)rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) args[0].buffer.length = sizeof(*rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) status = acpi_evaluate_integer(handle, "_SRT", &arg_list, &retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) pm_runtime_put_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) if (ACPI_FAILURE(status) || retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) static int acpi_tad_get_real_time(struct device *dev, struct acpi_tad_rt *rt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) acpi_handle handle = ACPI_HANDLE(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct acpi_buffer output = { ACPI_ALLOCATE_BUFFER };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) union acpi_object *out_obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct acpi_tad_rt *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) int ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) status = acpi_evaluate_object(handle, "_GRT", NULL, &output);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) pm_runtime_put_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) out_obj = output.pointer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (out_obj->type != ACPI_TYPE_BUFFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (out_obj->buffer.length != sizeof(*rt))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) data = (struct acpi_tad_rt *)(out_obj->buffer.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) if (!data->valid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) memcpy(rt, data, sizeof(*rt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) ACPI_FREE(output.pointer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static char *acpi_tad_rt_next_field(char *s, int *val)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) char *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) p = strchr(s, ':');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) *p = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) if (kstrtoint(s, 10, val))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) return p + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) static ssize_t time_store(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct acpi_tad_rt rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) char *str, *s;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) int val, ret = -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) str = kmemdup_nul(buf, count, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) if (!str)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) s = acpi_tad_rt_next_field(str, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) if (!s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) rt.year = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) s = acpi_tad_rt_next_field(s, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (!s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) rt.month = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) s = acpi_tad_rt_next_field(s, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) if (!s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) rt.day = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) s = acpi_tad_rt_next_field(s, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) if (!s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) rt.hour = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) s = acpi_tad_rt_next_field(s, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (!s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) rt.minute = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) s = acpi_tad_rt_next_field(s, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) if (!s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) rt.second = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) s = acpi_tad_rt_next_field(s, &val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (!s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) rt.tz = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) if (kstrtoint(s, 10, &val))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) rt.daylight = val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) rt.valid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) rt.msec = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) memset(rt.padding, 0, 3);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) ret = acpi_tad_set_real_time(dev, &rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) kfree(str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return ret ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) static ssize_t time_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) struct acpi_tad_rt rt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) ret = acpi_tad_get_real_time(dev, &rt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) return sprintf(buf, "%u:%u:%u:%u:%u:%u:%d:%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) rt.year, rt.month, rt.day, rt.hour, rt.minute, rt.second,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) rt.tz, rt.daylight);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) static DEVICE_ATTR_RW(time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static struct attribute *acpi_tad_time_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) &dev_attr_time.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static const struct attribute_group acpi_tad_time_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) .attrs = acpi_tad_time_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) static int acpi_tad_wake_set(struct device *dev, char *method, u32 timer_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) u32 value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) acpi_handle handle = ACPI_HANDLE(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) union acpi_object args[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) { .type = ACPI_TYPE_INTEGER, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) { .type = ACPI_TYPE_INTEGER, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) struct acpi_object_list arg_list = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) .pointer = args,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) .count = ARRAY_SIZE(args),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) unsigned long long retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) args[0].integer.value = timer_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) args[1].integer.value = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) status = acpi_evaluate_integer(handle, method, &arg_list, &retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) pm_runtime_put_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (ACPI_FAILURE(status) || retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) static int acpi_tad_wake_write(struct device *dev, const char *buf, char *method,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) u32 timer_id, const char *specval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) u32 value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) if (sysfs_streq(buf, specval)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) value = ACPI_TAD_WAKE_DISABLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) int ret = kstrtou32(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (value == ACPI_TAD_WAKE_DISABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) return acpi_tad_wake_set(dev, method, timer_id, value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) static ssize_t acpi_tad_wake_read(struct device *dev, char *buf, char *method,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) u32 timer_id, const char *specval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) acpi_handle handle = ACPI_HANDLE(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) union acpi_object args[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) { .type = ACPI_TYPE_INTEGER, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) struct acpi_object_list arg_list = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) .pointer = args,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) .count = ARRAY_SIZE(args),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) unsigned long long retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) args[0].integer.value = timer_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) status = acpi_evaluate_integer(handle, method, &arg_list, &retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) pm_runtime_put_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) if ((u32)retval == ACPI_TAD_WAKE_DISABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) return sprintf(buf, "%s\n", specval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) return sprintf(buf, "%u\n", (u32)retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) static const char *alarm_specval = "disabled";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) static int acpi_tad_alarm_write(struct device *dev, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) u32 timer_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) return acpi_tad_wake_write(dev, buf, "_STV", timer_id, alarm_specval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) static ssize_t acpi_tad_alarm_read(struct device *dev, char *buf, u32 timer_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return acpi_tad_wake_read(dev, buf, "_TIV", timer_id, alarm_specval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) static const char *policy_specval = "never";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) static int acpi_tad_policy_write(struct device *dev, const char *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) u32 timer_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) return acpi_tad_wake_write(dev, buf, "_STP", timer_id, policy_specval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) static ssize_t acpi_tad_policy_read(struct device *dev, char *buf, u32 timer_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) return acpi_tad_wake_read(dev, buf, "_TIP", timer_id, policy_specval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) static int acpi_tad_clear_status(struct device *dev, u32 timer_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) acpi_handle handle = ACPI_HANDLE(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) union acpi_object args[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) { .type = ACPI_TYPE_INTEGER, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) struct acpi_object_list arg_list = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) .pointer = args,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) .count = ARRAY_SIZE(args),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) unsigned long long retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) args[0].integer.value = timer_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) status = acpi_evaluate_integer(handle, "_CWS", &arg_list, &retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) pm_runtime_put_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (ACPI_FAILURE(status) || retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) static int acpi_tad_status_write(struct device *dev, const char *buf, u32 timer_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) int ret, value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) ret = kstrtoint(buf, 0, &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) if (value)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) return acpi_tad_clear_status(dev, timer_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) static ssize_t acpi_tad_status_read(struct device *dev, char *buf, u32 timer_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) acpi_handle handle = ACPI_HANDLE(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) union acpi_object args[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) { .type = ACPI_TYPE_INTEGER, },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) struct acpi_object_list arg_list = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) .pointer = args,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) .count = ARRAY_SIZE(args),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) unsigned long long retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) args[0].integer.value = timer_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) status = acpi_evaluate_integer(handle, "_GWS", &arg_list, &retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) pm_runtime_put_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) if (ACPI_FAILURE(status))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) return sprintf(buf, "0x%02X\n", (u32)retval);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static ssize_t caps_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) struct acpi_tad_driver_data *dd = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) return sprintf(buf, "0x%02X\n", dd->capabilities);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static DEVICE_ATTR_RO(caps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) static ssize_t ac_alarm_store(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) int ret = acpi_tad_alarm_write(dev, buf, ACPI_TAD_AC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) return ret ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) static ssize_t ac_alarm_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) return acpi_tad_alarm_read(dev, buf, ACPI_TAD_AC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) static DEVICE_ATTR_RW(ac_alarm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) static ssize_t ac_policy_store(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) int ret = acpi_tad_policy_write(dev, buf, ACPI_TAD_AC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) return ret ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) static ssize_t ac_policy_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) return acpi_tad_policy_read(dev, buf, ACPI_TAD_AC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) static DEVICE_ATTR_RW(ac_policy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) static ssize_t ac_status_store(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) int ret = acpi_tad_status_write(dev, buf, ACPI_TAD_AC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) return ret ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) static ssize_t ac_status_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return acpi_tad_status_read(dev, buf, ACPI_TAD_AC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) static DEVICE_ATTR_RW(ac_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) static struct attribute *acpi_tad_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) &dev_attr_caps.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) &dev_attr_ac_alarm.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) &dev_attr_ac_policy.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) &dev_attr_ac_status.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) static const struct attribute_group acpi_tad_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) .attrs = acpi_tad_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) static ssize_t dc_alarm_store(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) int ret = acpi_tad_alarm_write(dev, buf, ACPI_TAD_DC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) return ret ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) static ssize_t dc_alarm_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) return acpi_tad_alarm_read(dev, buf, ACPI_TAD_DC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) static DEVICE_ATTR_RW(dc_alarm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) static ssize_t dc_policy_store(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) int ret = acpi_tad_policy_write(dev, buf, ACPI_TAD_DC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) return ret ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) static ssize_t dc_policy_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) return acpi_tad_policy_read(dev, buf, ACPI_TAD_DC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) static DEVICE_ATTR_RW(dc_policy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) static ssize_t dc_status_store(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) int ret = acpi_tad_status_write(dev, buf, ACPI_TAD_DC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) return ret ? ret : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) static ssize_t dc_status_show(struct device *dev, struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) return acpi_tad_status_read(dev, buf, ACPI_TAD_DC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) static DEVICE_ATTR_RW(dc_status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) static struct attribute *acpi_tad_dc_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) &dev_attr_dc_alarm.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) &dev_attr_dc_policy.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) &dev_attr_dc_status.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) static const struct attribute_group acpi_tad_dc_attr_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) .attrs = acpi_tad_dc_attrs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) static int acpi_tad_disable_timer(struct device *dev, u32 timer_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) return acpi_tad_wake_set(dev, "_STV", timer_id, ACPI_TAD_WAKE_DISABLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) static int acpi_tad_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) struct acpi_tad_driver_data *dd = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) device_init_wakeup(dev, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) if (dd->capabilities & ACPI_TAD_DC_WAKE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) sysfs_remove_group(&dev->kobj, &acpi_tad_dc_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) sysfs_remove_group(&dev->kobj, &acpi_tad_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) acpi_tad_disable_timer(dev, ACPI_TAD_AC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) acpi_tad_clear_status(dev, ACPI_TAD_AC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) if (dd->capabilities & ACPI_TAD_DC_WAKE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) acpi_tad_disable_timer(dev, ACPI_TAD_DC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) acpi_tad_clear_status(dev, ACPI_TAD_DC_TIMER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) pm_runtime_put_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) pm_runtime_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) static int acpi_tad_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) acpi_handle handle = ACPI_HANDLE(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) struct acpi_tad_driver_data *dd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) unsigned long long caps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) * Initialization failure messages are mostly about firmware issues, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) * print them at the "info" level.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) status = acpi_evaluate_integer(handle, "_GCP", NULL, &caps);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) dev_info(dev, "Unable to get capabilities\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) if (!(caps & ACPI_TAD_AC_WAKE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) dev_info(dev, "Unsupported capabilities\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) if (!acpi_has_method(handle, "_PRW")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) dev_info(dev, "Missing _PRW\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) dd = devm_kzalloc(dev, sizeof(*dd), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) if (!dd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) dd->capabilities = caps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) dev_set_drvdata(dev, dd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) * Assume that the ACPI PM domain has been attached to the device and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) * simply enable system wakeup and runtime PM and put the device into
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) * runtime suspend. Everything else should be taken care of by the ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * PM domain callbacks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) device_init_wakeup(dev, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) dev_pm_set_driver_flags(dev, DPM_FLAG_SMART_SUSPEND |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) DPM_FLAG_MAY_SKIP_RESUME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) * The platform bus type layer tells the ACPI PM domain powers up the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) * device, so set the runtime PM status of it to "active".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) pm_runtime_set_active(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) pm_runtime_enable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) pm_runtime_suspend(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) ret = sysfs_create_group(&dev->kobj, &acpi_tad_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) if (caps & ACPI_TAD_DC_WAKE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) ret = sysfs_create_group(&dev->kobj, &acpi_tad_dc_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) if (caps & ACPI_TAD_RT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) ret = sysfs_create_group(&dev->kobj, &acpi_tad_time_attr_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) goto fail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) fail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) acpi_tad_remove(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) static const struct acpi_device_id acpi_tad_ids[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) {"ACPI000E", 0},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) {}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) static struct platform_driver acpi_tad_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) .name = "acpi-tad",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) .acpi_match_table = acpi_tad_ids,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) .probe = acpi_tad_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) .remove = acpi_tad_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) MODULE_DEVICE_TABLE(acpi, acpi_tad_ids);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) module_platform_driver(acpi_tad_driver);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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