diff options
Diffstat (limited to 'drivers/acpi/hardware/hwacpi.c')
| -rw-r--r-- | drivers/acpi/hardware/hwacpi.c | 116 |
1 files changed, 51 insertions, 65 deletions
diff --git a/drivers/acpi/hardware/hwacpi.c b/drivers/acpi/hardware/hwacpi.c index b51001e74ee..1bb3463d704 100644 --- a/drivers/acpi/hardware/hwacpi.c +++ b/drivers/acpi/hardware/hwacpi.c @@ -42,13 +42,10 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include <acpi/acpi.h> - #define _COMPONENT ACPI_HARDWARE - ACPI_MODULE_NAME ("hwacpi") - +ACPI_MODULE_NAME("hwacpi") /****************************************************************************** * @@ -62,36 +59,30 @@ * the FADT. * ******************************************************************************/ - -acpi_status -acpi_hw_initialize ( - void) +acpi_status acpi_hw_initialize(void) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("hw_initialize"); + acpi_status status; + ACPI_FUNCTION_TRACE("hw_initialize"); /* We must have the ACPI tables by the time we get here */ if (!acpi_gbl_FADT) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No FADT is present\n")); + ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "No FADT is present\n")); - return_ACPI_STATUS (AE_NO_ACPI_TABLES); + return_ACPI_STATUS(AE_NO_ACPI_TABLES); } /* Sanity check the FADT for valid values */ - status = acpi_ut_validate_fadt (); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_validate_fadt(); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } - /****************************************************************************** * * FUNCTION: acpi_hw_set_mode @@ -104,24 +95,21 @@ acpi_hw_initialize ( * ******************************************************************************/ -acpi_status -acpi_hw_set_mode ( - u32 mode) +acpi_status acpi_hw_set_mode(u32 mode) { - acpi_status status; - u32 retry; - + acpi_status status; + u32 retry; - ACPI_FUNCTION_TRACE ("hw_set_mode"); + ACPI_FUNCTION_TRACE("hw_set_mode"); /* * ACPI 2.0 clarified that if SMI_CMD in FADT is zero, * system does not support mode transition. */ if (!acpi_gbl_FADT->smi_cmd) { - ACPI_REPORT_ERROR (("No SMI_CMD in FADT, mode transition failed.\n")); - return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); + ACPI_REPORT_ERROR(("No SMI_CMD in FADT, mode transition failed.\n")); + return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE); } /* @@ -132,9 +120,8 @@ acpi_hw_set_mode ( * transitions are not supported. */ if (!acpi_gbl_FADT->acpi_enable && !acpi_gbl_FADT->acpi_disable) { - ACPI_REPORT_ERROR (( - "No ACPI mode transition supported in this system (enable/disable both zero)\n")); - return_ACPI_STATUS (AE_OK); + ACPI_REPORT_ERROR(("No ACPI mode transition supported in this system (enable/disable both zero)\n")); + return_ACPI_STATUS(AE_OK); } switch (mode) { @@ -142,9 +129,11 @@ acpi_hw_set_mode ( /* BIOS should have disabled ALL fixed and GP events */ - status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, - (u32) acpi_gbl_FADT->acpi_enable, 8); - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Attempting to enable ACPI mode\n")); + status = acpi_os_write_port(acpi_gbl_FADT->smi_cmd, + (u32) acpi_gbl_FADT->acpi_enable, + 8); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Attempting to enable ACPI mode\n")); break; case ACPI_SYS_MODE_LEGACY: @@ -153,20 +142,21 @@ acpi_hw_set_mode ( * BIOS should clear all fixed status bits and restore fixed event * enable bits to default */ - status = acpi_os_write_port (acpi_gbl_FADT->smi_cmd, - (u32) acpi_gbl_FADT->acpi_disable, 8); - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, - "Attempting to enable Legacy (non-ACPI) mode\n")); + status = acpi_os_write_port(acpi_gbl_FADT->smi_cmd, + (u32) acpi_gbl_FADT->acpi_disable, + 8); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Attempting to enable Legacy (non-ACPI) mode\n")); break; default: - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - if (ACPI_FAILURE (status)) { - ACPI_REPORT_ERROR (("Could not write mode change, %s\n", - acpi_format_exception (status))); - return_ACPI_STATUS (status); + if (ACPI_FAILURE(status)) { + ACPI_REPORT_ERROR(("Could not write mode change, %s\n", + acpi_format_exception(status))); + return_ACPI_STATUS(status); } /* @@ -176,19 +166,19 @@ acpi_hw_set_mode ( retry = 3000; while (retry) { if (acpi_hw_get_mode() == mode) { - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Mode %X successfully enabled\n", - mode)); - return_ACPI_STATUS (AE_OK); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Mode %X successfully enabled\n", + mode)); + return_ACPI_STATUS(AE_OK); } acpi_os_stall(1000); retry--; } - ACPI_REPORT_ERROR (("Hardware never changed modes\n")); - return_ACPI_STATUS (AE_NO_HARDWARE_RESPONSE); + ACPI_REPORT_ERROR(("Hardware never changed modes\n")); + return_ACPI_STATUS(AE_NO_HARDWARE_RESPONSE); } - /******************************************************************************* * * FUNCTION: acpi_hw_get_mode @@ -202,34 +192,30 @@ acpi_hw_set_mode ( * ******************************************************************************/ -u32 -acpi_hw_get_mode ( - void) +u32 acpi_hw_get_mode(void) { - acpi_status status; - u32 value; - - - ACPI_FUNCTION_TRACE ("hw_get_mode"); + acpi_status status; + u32 value; + ACPI_FUNCTION_TRACE("hw_get_mode"); /* * ACPI 2.0 clarified that if SMI_CMD in FADT is zero, * system does not support mode transition. */ if (!acpi_gbl_FADT->smi_cmd) { - return_VALUE (ACPI_SYS_MODE_ACPI); + return_VALUE(ACPI_SYS_MODE_ACPI); } - status = acpi_get_register (ACPI_BITREG_SCI_ENABLE, &value, ACPI_MTX_LOCK); - if (ACPI_FAILURE (status)) { - return_VALUE (ACPI_SYS_MODE_LEGACY); + status = + acpi_get_register(ACPI_BITREG_SCI_ENABLE, &value, ACPI_MTX_LOCK); + if (ACPI_FAILURE(status)) { + return_VALUE(ACPI_SYS_MODE_LEGACY); } if (value) { - return_VALUE (ACPI_SYS_MODE_ACPI); - } - else { - return_VALUE (ACPI_SYS_MODE_LEGACY); + return_VALUE(ACPI_SYS_MODE_ACPI); + } else { + return_VALUE(ACPI_SYS_MODE_LEGACY); } } |