^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Name: hwsleep.c - ACPI Hardware Sleep/Wake Support functions for the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * original/legacy sleep/PM registers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2000 - 2020, Intel Corp.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) *****************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <acpi/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "accommon.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #define _COMPONENT ACPI_HARDWARE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) ACPI_MODULE_NAME("hwsleep")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #if (!ACPI_REDUCED_HARDWARE) /* Entire module */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * FUNCTION: acpi_hw_legacy_sleep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * PARAMETERS: sleep_state - Which sleep state to enter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * DESCRIPTION: Enter a system sleep state via the legacy FADT PM registers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) acpi_status acpi_hw_legacy_sleep(u8 sleep_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct acpi_bit_register_info *sleep_type_reg_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct acpi_bit_register_info *sleep_enable_reg_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) u32 pm1a_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) u32 pm1b_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) u32 in_value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) ACPI_FUNCTION_TRACE(hw_legacy_sleep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) sleep_type_reg_info =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) sleep_enable_reg_info =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* Clear wake status */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) status = acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) ACPI_CLEAR_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) /* Disable all GPEs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) status = acpi_hw_disable_all_gpes();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) status = acpi_hw_clear_acpi_status();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) acpi_gbl_system_awake_and_running = FALSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) /* Enable all wakeup GPEs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) status = acpi_hw_enable_all_wakeup_gpes();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* Get current value of PM1A control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) &pm1a_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) ACPI_DEBUG_PRINT((ACPI_DB_INIT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) "Entering sleep state [S%u]\n", sleep_state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /* Clear the SLP_EN and SLP_TYP fields */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) pm1a_control &= ~(sleep_type_reg_info->access_bit_mask |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) sleep_enable_reg_info->access_bit_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) pm1b_control = pm1a_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) /* Insert the SLP_TYP bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) pm1a_control |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) (acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) pm1b_control |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) (acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * We split the writes of SLP_TYP and SLP_EN to workaround
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * poorly implemented hardware.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) /* Write #1: write the SLP_TYP data to the PM1 Control registers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) /* Insert the sleep enable (SLP_EN) bit */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) pm1a_control |= sleep_enable_reg_info->access_bit_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) pm1b_control |= sleep_enable_reg_info->access_bit_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) /* Flush caches, as per ACPI specification */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (sleep_state < ACPI_STATE_S4) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) ACPI_FLUSH_CPU_CACHE();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) status = acpi_os_enter_sleep(sleep_state, pm1a_control, pm1b_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (status == AE_CTRL_TERMINATE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* Write #2: Write both SLP_TYP + SLP_EN */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) status = acpi_hw_write_pm1_control(pm1a_control, pm1b_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) if (sleep_state > ACPI_STATE_S3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * We wanted to sleep > S3, but it didn't happen (by virtue of the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * fact that we are still executing!)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * Wait ten seconds, then try again. This is to get S4/S5 to work on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) * all machines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) * We wait so long to allow chipsets that poll this reg very slowly
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) * to still read the right value. Ideally, this block would go
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) * away entirely.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) acpi_os_stall(10 * ACPI_USEC_PER_SEC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) sleep_enable_reg_info->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) access_bit_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) /* Wait for transition back to Working State */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) } while (!in_value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) return_ACPI_STATUS(AE_OK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * FUNCTION: acpi_hw_legacy_wake_prep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) * PARAMETERS: sleep_state - Which sleep state we just exited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * sleep.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * Called with interrupts ENABLED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) acpi_status status = AE_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) struct acpi_bit_register_info *sleep_type_reg_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) struct acpi_bit_register_info *sleep_enable_reg_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) u32 pm1a_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) u32 pm1b_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) ACPI_FUNCTION_TRACE(hw_legacy_wake_prep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) * Set SLP_TYPE and SLP_EN to state S0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) * This is unclear from the ACPI Spec, but it is required
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) * by some machines.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (acpi_gbl_sleep_type_a_s0 != ACPI_SLEEP_TYPE_INVALID) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) sleep_type_reg_info =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) sleep_enable_reg_info =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) /* Get current value of PM1A control */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) &pm1a_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (ACPI_SUCCESS(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) /* Clear the SLP_EN and SLP_TYP fields */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) pm1a_control &= ~(sleep_type_reg_info->access_bit_mask |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) sleep_enable_reg_info->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) access_bit_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) pm1b_control = pm1a_control;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) /* Insert the SLP_TYP bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) pm1a_control |= (acpi_gbl_sleep_type_a_s0 <<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) sleep_type_reg_info->bit_position);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) pm1b_control |= (acpi_gbl_sleep_type_b_s0 <<
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) sleep_type_reg_info->bit_position);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) /* Write the control registers and ignore any errors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) (void)acpi_hw_write_pm1_control(pm1a_control,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) pm1b_control);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /*******************************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * FUNCTION: acpi_hw_legacy_wake
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * PARAMETERS: sleep_state - Which sleep state we just exited
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * RETURN: Status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) * Called with interrupts ENABLED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) ******************************************************************************/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) acpi_status acpi_hw_legacy_wake(u8 sleep_state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) acpi_status status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) ACPI_FUNCTION_TRACE(hw_legacy_wake);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WAKING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) * GPEs must be enabled before _WAK is called as GPEs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * might get fired there
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) * Restore the GPEs:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) * 1) Disable all GPEs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) * 2) Enable all runtime GPEs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) status = acpi_hw_disable_all_gpes();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) status = acpi_hw_enable_all_runtime_gpes();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) if (ACPI_FAILURE(status)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * Now we can execute _WAK, etc. Some machines require that the GPEs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * are enabled before the wake methods are executed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) acpi_hw_execute_sleep_method(METHOD_PATHNAME__WAK, sleep_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) * Some BIOS code assumes that WAK_STS will be cleared on resume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) * and use it to determine whether the system is rebooting or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) * resuming. Clear WAK_STS for compatibility.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) (void)acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) ACPI_CLEAR_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) acpi_gbl_system_awake_and_running = TRUE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) /* Enable power button */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) (void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) acpi_write_bit_register(acpi_gbl_fixed_event_info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) [ACPI_EVENT_POWER_BUTTON].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) enable_register_id, ACPI_ENABLE_EVENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) (void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) acpi_write_bit_register(acpi_gbl_fixed_event_info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) [ACPI_EVENT_POWER_BUTTON].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) status_register_id, ACPI_CLEAR_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) /* Enable sleep button */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) (void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) acpi_write_bit_register(acpi_gbl_fixed_event_info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) [ACPI_EVENT_SLEEP_BUTTON].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) enable_register_id, ACPI_ENABLE_EVENT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) (void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) acpi_write_bit_register(acpi_gbl_fixed_event_info
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) [ACPI_EVENT_SLEEP_BUTTON].
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) status_register_id, ACPI_CLEAR_STATUS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) return_ACPI_STATUS(status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) #endif /* !ACPI_REDUCED_HARDWARE */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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