diff options
Diffstat (limited to 'drivers/acpi/acpica/hwgpe.c')
| -rw-r--r-- | drivers/acpi/acpica/hwgpe.c | 52 |
1 files changed, 40 insertions, 12 deletions
diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c index bd72319a38f0..d989b8e786cc 100644 --- a/drivers/acpi/acpica/hwgpe.c +++ b/drivers/acpi/acpica/hwgpe.c @@ -57,6 +57,27 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, /****************************************************************************** * + * FUNCTION: acpi_hw_gpe_register_bit + * + * PARAMETERS: gpe_event_info - Info block for the GPE + * gpe_register_info - Info block for the GPE register + * + * RETURN: Status + * + * DESCRIPTION: Compute GPE enable mask with one bit corresponding to the given + * GPE set. + * + ******************************************************************************/ + +u32 acpi_hw_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info, + struct acpi_gpe_register_info *gpe_register_info) +{ + return (u32)1 << (gpe_event_info->gpe_number - + gpe_register_info->base_gpe_number); +} + +/****************************************************************************** + * * FUNCTION: acpi_hw_low_disable_gpe * * PARAMETERS: gpe_event_info - Info block for the GPE to be disabled @@ -72,6 +93,7 @@ acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info) struct acpi_gpe_register_info *gpe_register_info; acpi_status status; u32 enable_mask; + u32 register_bit; /* Get the info block for the entire GPE register */ @@ -89,9 +111,9 @@ acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info) /* Clear just the bit that corresponds to this GPE */ - ACPI_CLEAR_BIT(enable_mask, ((u32)1 << - (gpe_event_info->gpe_number - - gpe_register_info->base_gpe_number))); + register_bit = acpi_hw_gpe_register_bit(gpe_event_info, + gpe_register_info); + ACPI_CLEAR_BIT(enable_mask, register_bit); /* Write the updated enable mask */ @@ -150,21 +172,28 @@ acpi_hw_write_gpe_enable_reg(struct acpi_gpe_event_info * gpe_event_info) acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info) { + struct acpi_gpe_register_info *gpe_register_info; acpi_status status; - u8 register_bit; + u32 register_bit; ACPI_FUNCTION_ENTRY(); - register_bit = (u8)(1 << - (gpe_event_info->gpe_number - - gpe_event_info->register_info->base_gpe_number)); + /* Get the info block for the entire GPE register */ + + gpe_register_info = gpe_event_info->register_info; + if (!gpe_register_info) { + return (AE_NOT_EXIST); + } + + register_bit = acpi_hw_gpe_register_bit(gpe_event_info, + gpe_register_info); /* * Write a one to the appropriate bit in the status register to * clear this GPE. */ status = acpi_hw_write(register_bit, - &gpe_event_info->register_info->status_address); + &gpe_register_info->status_address); return (status); } @@ -187,7 +216,7 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info, acpi_event_status * event_status) { u32 in_byte; - u8 register_bit; + u32 register_bit; struct acpi_gpe_register_info *gpe_register_info; acpi_status status; acpi_event_status local_event_status = 0; @@ -204,9 +233,8 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info, /* Get the register bitmask for this GPE */ - register_bit = (u8)(1 << - (gpe_event_info->gpe_number - - gpe_event_info->register_info->base_gpe_number)); + register_bit = acpi_hw_gpe_register_bit(gpe_event_info, + gpe_register_info); /* GPE currently enabled? (enabled for runtime?) */ |