diff options
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/events/evevent.c | 6 | ||||
-rw-r--r-- | drivers/acpi/hardware/hwregs.c | 89 | ||||
-rw-r--r-- | drivers/acpi/hardware/hwsleep.c | 30 |
3 files changed, 48 insertions, 77 deletions
diff --git a/drivers/acpi/events/evevent.c b/drivers/acpi/events/evevent.c index a1f87b5def2a..e41287815ea1 100644 --- a/drivers/acpi/events/evevent.c +++ b/drivers/acpi/events/evevent.c @@ -239,10 +239,8 @@ u32 acpi_ev_fixed_event_detect(void) * Read the fixed feature status and enable registers, as all the cases * depend on their values. Ignore errors here. */ - (void)acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_STATUS, &fixed_status); - (void)acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_ENABLE, &fixed_enable); + (void)acpi_hw_register_read(ACPI_REGISTER_PM1_STATUS, &fixed_status); + (void)acpi_hw_register_read(ACPI_REGISTER_PM1_ENABLE, &fixed_enable); ACPI_DEBUG_PRINT((ACPI_DB_INTERRUPTS, "Fixed Event Block: Enable %08X Status %08X\n", diff --git a/drivers/acpi/hardware/hwregs.c b/drivers/acpi/hardware/hwregs.c index 1d371fa663f2..73f9c5fb1ba7 100644 --- a/drivers/acpi/hardware/hwregs.c +++ b/drivers/acpi/hardware/hwregs.c @@ -75,8 +75,7 @@ acpi_status acpi_hw_clear_acpi_status(void) lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock); - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_STATUS, + status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS, ACPI_BITMASK_ALL_FIXED_STATUS); if (ACPI_FAILURE(status)) { goto unlock_and_exit; @@ -259,7 +258,7 @@ struct acpi_bit_register_info *acpi_hw_get_bit_register_info(u32 register_id) * ******************************************************************************/ -acpi_status acpi_get_register(u32 register_id, u32 * return_value) +acpi_status acpi_get_register_unlocked(u32 register_id, u32 * return_value) { u32 register_value = 0; struct acpi_bit_register_info *bit_reg_info; @@ -276,8 +275,7 @@ acpi_status acpi_get_register(u32 register_id, u32 * return_value) /* Read from the register */ - status = acpi_hw_register_read(ACPI_MTX_LOCK, - bit_reg_info->parent_register, + status = acpi_hw_register_read(bit_reg_info->parent_register, ®ister_value); if (ACPI_SUCCESS(status)) { @@ -298,6 +296,16 @@ acpi_status acpi_get_register(u32 register_id, u32 * return_value) return_ACPI_STATUS(status); } +acpi_status acpi_get_register(u32 register_id, u32 * return_value) +{ + acpi_status status; + acpi_cpu_flags flags; + flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock); + status = acpi_get_register_unlocked(register_id, return_value); + acpi_os_release_lock(acpi_gbl_hardware_lock, flags); + return status; +} + ACPI_EXPORT_SYMBOL(acpi_get_register) /******************************************************************************* @@ -335,8 +343,7 @@ acpi_status acpi_set_register(u32 register_id, u32 value) /* Always do a register read first so we can insert the new bits */ - status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, - bit_reg_info->parent_register, + status = acpi_hw_register_read(bit_reg_info->parent_register, ®ister_value); if (ACPI_FAILURE(status)) { goto unlock_and_exit; @@ -363,8 +370,7 @@ acpi_status acpi_set_register(u32 register_id, u32 value) bit_reg_info-> access_bit_mask); if (value) { - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_STATUS, + status = acpi_hw_register_write(ACPI_REGISTER_PM1_STATUS, (u16) value); register_value = 0; } @@ -377,8 +383,7 @@ acpi_status acpi_set_register(u32 register_id, u32 value) bit_reg_info->access_bit_mask, value); - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_ENABLE, + status = acpi_hw_register_write(ACPI_REGISTER_PM1_ENABLE, (u16) register_value); break; @@ -397,15 +402,13 @@ acpi_status acpi_set_register(u32 register_id, u32 value) bit_reg_info->access_bit_mask, value); - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_CONTROL, + status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL, (u16) register_value); break; case ACPI_REGISTER_PM2_CONTROL: - status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM2_CONTROL, + status = acpi_hw_register_read(ACPI_REGISTER_PM2_CONTROL, ®ister_value); if (ACPI_FAILURE(status)) { goto unlock_and_exit; @@ -430,8 +433,7 @@ acpi_status acpi_set_register(u32 register_id, u32 value) xpm2_control_block. address))); - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM2_CONTROL, + status = acpi_hw_register_write(ACPI_REGISTER_PM2_CONTROL, (u8) (register_value)); break; @@ -461,8 +463,7 @@ ACPI_EXPORT_SYMBOL(acpi_set_register) * * FUNCTION: acpi_hw_register_read * - * PARAMETERS: use_lock - Lock hardware? True/False - * register_id - ACPI Register ID + * PARAMETERS: register_id - ACPI Register ID * return_value - Where the register value is returned * * RETURN: Status and the value read. @@ -471,19 +472,14 @@ ACPI_EXPORT_SYMBOL(acpi_set_register) * ******************************************************************************/ acpi_status -acpi_hw_register_read(u8 use_lock, u32 register_id, u32 * return_value) +acpi_hw_register_read(u32 register_id, u32 * return_value) { u32 value1 = 0; u32 value2 = 0; acpi_status status; - acpi_cpu_flags lock_flags = 0; ACPI_FUNCTION_TRACE(hw_register_read); - if (ACPI_MTX_LOCK == use_lock) { - lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock); - } - switch (register_id) { case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */ @@ -491,7 +487,7 @@ acpi_hw_register_read(u8 use_lock, u32 register_id, u32 * return_value) acpi_hw_low_level_read(16, &value1, &acpi_gbl_FADT.xpm1a_event_block); if (ACPI_FAILURE(status)) { - goto unlock_and_exit; + goto exit; } /* PM1B is optional */ @@ -507,7 +503,7 @@ acpi_hw_register_read(u8 use_lock, u32 register_id, u32 * return_value) status = acpi_hw_low_level_read(16, &value1, &acpi_gbl_xpm1a_enable); if (ACPI_FAILURE(status)) { - goto unlock_and_exit; + goto exit; } /* PM1B is optional */ @@ -523,7 +519,7 @@ acpi_hw_register_read(u8 use_lock, u32 register_id, u32 * return_value) acpi_hw_low_level_read(16, &value1, &acpi_gbl_FADT.xpm1a_control_block); if (ACPI_FAILURE(status)) { - goto unlock_and_exit; + goto exit; } status = @@ -558,10 +554,7 @@ acpi_hw_register_read(u8 use_lock, u32 register_id, u32 * return_value) break; } - unlock_and_exit: - if (ACPI_MTX_LOCK == use_lock) { - acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags); - } + exit: if (ACPI_SUCCESS(status)) { *return_value = value1; @@ -574,8 +567,7 @@ acpi_hw_register_read(u8 use_lock, u32 register_id, u32 * return_value) * * FUNCTION: acpi_hw_register_write * - * PARAMETERS: use_lock - Lock hardware? True/False - * register_id - ACPI Register ID + * PARAMETERS: register_id - ACPI Register ID * Value - The value to write * * RETURN: Status @@ -597,28 +589,22 @@ acpi_hw_register_read(u8 use_lock, u32 register_id, u32 * return_value) * ******************************************************************************/ -acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value) +acpi_status acpi_hw_register_write(u32 register_id, u32 value) { acpi_status status; - acpi_cpu_flags lock_flags = 0; u32 read_value; ACPI_FUNCTION_TRACE(hw_register_write); - if (ACPI_MTX_LOCK == use_lock) { - lock_flags = acpi_os_acquire_lock(acpi_gbl_hardware_lock); - } - switch (register_id) { case ACPI_REGISTER_PM1_STATUS: /* 16-bit access */ /* Perform a read first to preserve certain bits (per ACPI spec) */ - status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_STATUS, + status = acpi_hw_register_read(ACPI_REGISTER_PM1_STATUS, &read_value); if (ACPI_FAILURE(status)) { - goto unlock_and_exit; + goto exit; } /* Insert the bits to be preserved */ @@ -632,7 +618,7 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value) acpi_hw_low_level_write(16, value, &acpi_gbl_FADT.xpm1a_event_block); if (ACPI_FAILURE(status)) { - goto unlock_and_exit; + goto exit; } /* PM1B is optional */ @@ -647,7 +633,7 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value) status = acpi_hw_low_level_write(16, value, &acpi_gbl_xpm1a_enable); if (ACPI_FAILURE(status)) { - goto unlock_and_exit; + goto exit; } /* PM1B is optional */ @@ -661,11 +647,10 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value) /* * Perform a read first to preserve certain bits (per ACPI spec) */ - status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_CONTROL, + status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, &read_value); if (ACPI_FAILURE(status)) { - goto unlock_and_exit; + goto exit; } /* Insert the bits to be preserved */ @@ -679,7 +664,7 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value) acpi_hw_low_level_write(16, value, &acpi_gbl_FADT.xpm1a_control_block); if (ACPI_FAILURE(status)) { - goto unlock_and_exit; + goto exit; } status = @@ -728,11 +713,7 @@ acpi_status acpi_hw_register_write(u8 use_lock, u32 register_id, u32 value) break; } - unlock_and_exit: - if (ACPI_MTX_LOCK == use_lock) { - acpi_os_release_lock(acpi_gbl_hardware_lock, lock_flags); - } - + exit: return_ACPI_STATUS(status); } diff --git a/drivers/acpi/hardware/hwsleep.c b/drivers/acpi/hardware/hwsleep.c index 8181afbd1d4d..81b248429703 100644 --- a/drivers/acpi/hardware/hwsleep.c +++ b/drivers/acpi/hardware/hwsleep.c @@ -309,8 +309,7 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) /* Get current value of PM1A control */ - status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol); + status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } @@ -337,15 +336,13 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) /* Write #1: fill in SLP_TYP data */ - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1A_CONTROL, + status = acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1B_CONTROL, + status = acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); @@ -360,15 +357,13 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) ACPI_FLUSH_CPU_CACHE(); - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1A_CONTROL, + status = acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1B_CONTROL, + status = acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); @@ -388,8 +383,7 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) */ acpi_os_stall(10000000); - status = acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_CONTROL, + status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL, sleep_enable_reg_info-> access_bit_mask); if (ACPI_FAILURE(status)) { @@ -400,7 +394,8 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) /* Wait until we enter sleep state */ do { - status = acpi_get_register(ACPI_BITREG_WAKE_STATUS, &in_value); + status = acpi_get_register_unlocked(ACPI_BITREG_WAKE_STATUS, + &in_value); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } @@ -516,8 +511,7 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state) /* Get current value of PM1A control */ - status = acpi_hw_register_read(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1_CONTROL, + status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol); if (ACPI_SUCCESS(status)) { @@ -539,11 +533,9 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state) /* Just ignore any errors */ - (void)acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1A_CONTROL, + (void)acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL, PM1Acontrol); - (void)acpi_hw_register_write(ACPI_MTX_DO_NOT_LOCK, - ACPI_REGISTER_PM1B_CONTROL, + (void)acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL, PM1Bcontrol); } } |