From e4e9a735991c80fb0fc1bd4a13a93681c3c17ce0 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Tue, 8 Jun 2010 10:48:26 +0200 Subject: [PATCH] ACPI / ACPICA: Use helper function for computing GPE masks In quite a few places ACPICA needs to compute a GPE enable mask with only one bit, corresponding to a given GPE, set. Currently, that computation is always open coded which leads to unnecessary code duplication. Fix this by introducing a helper function for computing one-bit GPE enable masks and using it where appropriate. Signed-off-by: Rafael J. Wysocki Signed-off-by: Len Brown --- drivers/acpi/acpica/achware.h | 3 ++ drivers/acpi/acpica/evgpe.c | 7 ++--- drivers/acpi/acpica/hwgpe.c | 52 +++++++++++++++++++++++++++-------- 3 files changed, 46 insertions(+), 16 deletions(-) diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index 5900f135dc6d..c46277d179f0 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -90,6 +90,9 @@ acpi_status acpi_hw_write_port(acpi_io_address address, u32 value, u32 width); /* * hwgpe - GPE support */ +u32 acpi_hw_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info, + struct acpi_gpe_register_info *gpe_register_info); + acpi_status acpi_hw_low_disable_gpe(struct acpi_gpe_event_info *gpe_event_info); acpi_status diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index deb26f4c6623..57eeb3bde41e 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -69,7 +69,7 @@ acpi_status acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info) { struct acpi_gpe_register_info *gpe_register_info; - u8 register_bit; + u32 register_bit; ACPI_FUNCTION_TRACE(ev_update_gpe_enable_masks); @@ -78,9 +78,8 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info) return_ACPI_STATUS(AE_NOT_EXIST); } - register_bit = (u8) - (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); /* Clear the wake/run bits up front */ 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 @@ -55,6 +55,27 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, struct acpi_gpe_block_info *gpe_block, void *context); +/****************************************************************************** + * + * 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 @@ -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?) */ -- 2.34.1