diff options
| author | Angel Pons <th3fanbus@gmail.com> | 2020-10-29 15:34:48 +0100 |
|---|---|---|
| committer | Angel Pons <th3fanbus@gmail.com> | 2021-01-24 23:23:24 +0000 |
| commit | ae4eba9be55c8dd660a63ea45eecb2604cfae7ce (patch) | |
| tree | 2223248eebc2dd2c57979f82845d7d0350dcbb22 /src/soc/intel | |
| parent | 0ec903a73bd76e2f664259258933c42ce722b0f2 (diff) | |
soc/intel/broadwell: Drop enable check from LPD0/LPD3
When SerialIO devices are disabled, their _STA method evaluates to 0,
which means the device is not present. It is expected that OSPM would
not attempt to change the power state of a device that is not present.
Lynxpoint does not have these checks, thus remove them from Broadwell.
Also remove the now-unused Arg1 parameter to avoid warnings from IASL.
Change-Id: Ic5e999ac1171ce49db66bec45c58d8aa5711ec53
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/46966
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Diffstat (limited to 'src/soc/intel')
| -rw-r--r-- | src/soc/intel/broadwell/pch/acpi/serialio.asl | 40 |
1 files changed, 14 insertions, 26 deletions
diff --git a/src/soc/intel/broadwell/pch/acpi/serialio.asl b/src/soc/intel/broadwell/pch/acpi/serialio.asl index 91fa75831c..b03bcdd505 100644 --- a/src/soc/intel/broadwell/pch/acpi/serialio.asl +++ b/src/soc/intel/broadwell/pch/acpi/serialio.asl @@ -7,14 +7,8 @@ // Put SerialIO device in D0 state // Arg0 - BAR1 of device -// Arg1 - Set if device is in ACPI mode -Method (LPD0, 2, Serialized) +Method (LPD0, 1, Serialized) { - // PCI mode devices will be handled by OS PCI bus driver - If (Arg1 == 0) { - Return - } - OperationRegion (SPRT, SystemMemory, Arg0 + 0x84, 4) Field (SPRT, DWordAcc, NoLock, Preserve) { @@ -30,14 +24,8 @@ Method (LPD0, 2, Serialized) // Put SerialIO device in D3 state // Arg0 - BAR1 of device -// Arg1 - Set if device is in ACPI mode -Method (LPD3, 2, Serialized) +Method (LPD3, 1, Serialized) { - // PCI mode devices will be handled by OS PCI bus driver - If (Arg1 == 0) { - Return - } - OperationRegion (SPRT, SystemMemory, Arg0 + 0x84, 4) Field (SPRT, DWordAcc, NoLock, Preserve) { @@ -240,12 +228,12 @@ Device (I2C0) Method (_PS0, 0, Serialized) { - ^^LPD0 (\S1B1, \S1EN) + ^^LPD0 (\S1B1) } Method (_PS3, 0, Serialized) { - ^^LPD3 (\S1B1, \S1EN) + ^^LPD3 (\S1B1) } } @@ -311,12 +299,12 @@ Device (I2C1) Method (_PS0, 0, Serialized) { - ^^LPD0 (\S2B1, \S2EN) + ^^LPD0 (\S2B1) } Method (_PS3, 0, Serialized) { - ^^LPD3 (\S2B1, \S2EN) + ^^LPD3 (\S2B1) } } @@ -367,12 +355,12 @@ Device (SPI0) Method (_PS0, 0, Serialized) { - ^^LPD0 (\S3B1, \S3EN) + ^^LPD0 (\S3B1) } Method (_PS3, 0, Serialized) { - ^^LPD3 (\S3B1, \S3EN) + ^^LPD3 (\S3B1) } } @@ -435,12 +423,12 @@ Device (SPI1) Method (_PS0, 0, Serialized) { - ^^LPD0 (\S4B1, \S4EN) + ^^LPD0 (\S4B1) } Method (_PS3, 0, Serialized) { - ^^LPD3 (\S4B1, \S4EN) + ^^LPD3 (\S4B1) } } @@ -503,12 +491,12 @@ Device (UAR0) Method (_PS0, 0, Serialized) { - ^^LPD0 (\S5B1, \S5EN) + ^^LPD0 (\S5B1) } Method (_PS3, 0, Serialized) { - ^^LPD3 (\S5B1, \S5EN) + ^^LPD3 (\S5B1) } } @@ -559,12 +547,12 @@ Device (UAR1) Method (_PS0, 0, Serialized) { - ^^LPD0 (\S6B1, \S6EN) + ^^LPD0 (\S6B1) } Method (_PS3, 0, Serialized) { - ^^LPD3 (\S6B1, \S6EN) + ^^LPD3 (\S6B1) } } |