diff options
Diffstat (limited to 'drivers/acpi/hardware/hwtimer.c')
| -rw-r--r-- | drivers/acpi/hardware/hwtimer.c | 77 |
1 files changed, 30 insertions, 47 deletions
diff --git a/drivers/acpi/hardware/hwtimer.c b/drivers/acpi/hardware/hwtimer.c index 49d7b395322..aff6dc14178 100644 --- a/drivers/acpi/hardware/hwtimer.c +++ b/drivers/acpi/hardware/hwtimer.c @@ -46,8 +46,7 @@ #include <acpi/acpi.h> #define _COMPONENT ACPI_HARDWARE - ACPI_MODULE_NAME ("hwtimer") - +ACPI_MODULE_NAME("hwtimer") /****************************************************************************** * @@ -60,29 +59,23 @@ * DESCRIPTION: Obtains resolution of the ACPI PM Timer (24 or 32 bits). * ******************************************************************************/ - -acpi_status -acpi_get_timer_resolution ( - u32 *resolution) +acpi_status acpi_get_timer_resolution(u32 * resolution) { - ACPI_FUNCTION_TRACE ("acpi_get_timer_resolution"); - + ACPI_FUNCTION_TRACE("acpi_get_timer_resolution"); if (!resolution) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } if (0 == acpi_gbl_FADT->tmr_val_ext) { *resolution = 24; - } - else { + } else { *resolution = 32; } - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } - /****************************************************************************** * * FUNCTION: acpi_get_timer @@ -95,26 +88,22 @@ acpi_get_timer_resolution ( * ******************************************************************************/ -acpi_status -acpi_get_timer ( - u32 *ticks) +acpi_status acpi_get_timer(u32 * ticks) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_get_timer"); + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_get_timer"); if (!ticks) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_hw_low_level_read (32, ticks, &acpi_gbl_FADT->xpm_tmr_blk); + status = acpi_hw_low_level_read(32, ticks, &acpi_gbl_FADT->xpm_tmr_blk); - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } -EXPORT_SYMBOL(acpi_get_timer); +EXPORT_SYMBOL(acpi_get_timer); /****************************************************************************** * @@ -146,21 +135,16 @@ EXPORT_SYMBOL(acpi_get_timer); ******************************************************************************/ acpi_status -acpi_get_timer_duration ( - u32 start_ticks, - u32 end_ticks, - u32 *time_elapsed) +acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 * time_elapsed) { - acpi_status status; - u32 delta_ticks; - acpi_integer quotient; - - - ACPI_FUNCTION_TRACE ("acpi_get_timer_duration"); + acpi_status status; + u32 delta_ticks; + acpi_integer quotient; + ACPI_FUNCTION_TRACE("acpi_get_timer_duration"); if (!time_elapsed) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } /* @@ -169,22 +153,22 @@ acpi_get_timer_duration ( */ if (start_ticks < end_ticks) { delta_ticks = end_ticks - start_ticks; - } - else if (start_ticks > end_ticks) { + } else if (start_ticks > end_ticks) { if (0 == acpi_gbl_FADT->tmr_val_ext) { /* 24-bit Timer */ - delta_ticks = (((0x00FFFFFF - start_ticks) + end_ticks) & 0x00FFFFFF); - } - else { + delta_ticks = + (((0x00FFFFFF - start_ticks) + + end_ticks) & 0x00FFFFFF); + } else { /* 32-bit Timer */ delta_ticks = (0xFFFFFFFF - start_ticks) + end_ticks; } - } - else /* start_ticks == end_ticks */ { + } else { /* start_ticks == end_ticks */ + *time_elapsed = 0; - return_ACPI_STATUS (AE_OK); + return_ACPI_STATUS(AE_OK); } /* @@ -192,12 +176,11 @@ acpi_get_timer_duration ( * * time_elapsed = (delta_ticks * 1000000) / PM_TIMER_FREQUENCY; */ - status = acpi_ut_short_divide (((u64) delta_ticks) * 1000000, - PM_TIMER_FREQUENCY, "ient, NULL); + status = acpi_ut_short_divide(((u64) delta_ticks) * 1000000, + PM_TIMER_FREQUENCY, "ient, NULL); *time_elapsed = (u32) quotient; - return_ACPI_STATUS (status); + return_ACPI_STATUS(status); } EXPORT_SYMBOL(acpi_get_timer_duration); - |