Messages in this thread Patch in this message | | | Date | Fri, 24 Jan 2003 03:22:22 +0100 | From | Sergio Visinoni <> | Subject | [TRIVIAL] Re: [PATCH] ACPI update (20030122) |
| |
* Grover, Andrew (andrew.grover@intel.com) wrote: > (2.4) S4BIOS support (Ducrot Bruno)
Attached is the missing s4bios portion (the acpi_enter_sleep_state_s4bios function ) + fixes to make it build correctly on a 2.4.20 tree.
It should apply correctly on 2.4.21-pre3 as well (not tested).
Greetings, Sergio Visinoni --- linux-2.4.20/include/acpi/acpixf.h.s4bios~ 2003-01-24 02:34:04.000000000 +0100 +++ linux-2.4.20/include/acpi/acpixf.h 2003-01-24 02:37:01.000000000 +0100 @@ -380,6 +380,10 @@ u8 sleep_state); acpi_status +acpi_enter_sleep_state_s4bios ( + void); + +acpi_status acpi_leave_sleep_state ( u8 sleep_state); --- linux-2.4.20/drivers/acpi/hardware/hwsleep.c.s4bios~ 2003-01-24 02:35:41.000000000 +0100 +++ linux-2.4.20/drivers/acpi/hardware/hwsleep.c 2003-01-24 02:35:53.000000000 +0100 @@ -316,6 +316,54 @@ return_ACPI_STATUS (AE_OK); } + +/****************************************************************************** + * + * FUNCTION: acpi_enter_sleep_state_s4bios + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Perform a s4 bios request. + * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED + * + ******************************************************************************/ + +acpi_status +acpi_enter_sleep_state_s4bios ( + void) +{ + u32 in_value; + acpi_status status; + + + ACPI_FUNCTION_TRACE ("Acpi_enter_sleep_state_s4bios"); + + + acpi_set_register (ACPI_BITREG_WAKE_STATUS, 1, ACPI_MTX_LOCK); + acpi_hw_clear_acpi_status(); + + acpi_hw_disable_non_wakeup_gpes(); + + ACPI_FLUSH_CPU_CACHE(); + + status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, (acpi_integer) acpi_gbl_FADT->S4bios_req, 8); + + do { + acpi_os_stall(1000); + status = acpi_get_register (ACPI_BITREG_WAKE_STATUS, &in_value, ACPI_MTX_LOCK); + if (ACPI_FAILURE (status)) { + return_ACPI_STATUS (status); + } + } while (!in_value); + + printk(KERN_DEBUG "acpi: s4bios coming to live\n"); + + return_ACPI_STATUS (AE_OK); +} + + /****************************************************************************** * * FUNCTION: acpi_leave_sleep_state @@ -339,6 +387,8 @@ ACPI_FUNCTION_TRACE ("acpi_leave_sleep_state"); + /* Be sure to have BM arbitration */ + status = acpi_set_register (ACPI_BITREG_ARB_DISABLE, 0, ACPI_MTX_LOCK); /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */ @@ -371,8 +421,5 @@ return_ACPI_STATUS (status); } - /* Disable BM arbitration */ - status = acpi_set_register (ACPI_BITREG_ARB_DISABLE, 0, ACPI_MTX_LOCK); - return_ACPI_STATUS (status); } --- linux-2.4.20/drivers/acpi/include/acpixf.h.s4bios~ 2001-10-24 23:06:22.000000000 +0200 +++ linux-2.4.20/drivers/acpi/include/acpixf.h 2003-01-24 02:38:17.000000000 +0100 @@ -320,6 +320,10 @@ u8 sleep_state); acpi_status +acpi_enter_sleep_state_s4bios ( + void); + +acpi_status acpi_leave_sleep_state ( u8 sleep_state); | |