diff options
| author | Timothy Pearson <tpearson@raptorengineering.com> | 2017-04-13 17:08:18 -0500 |
|---|---|---|
| committer | Timothy Pearson <tpearson@raptorengineering.com> | 2017-04-17 23:33:09 +0200 |
| commit | 0f3a18ad28b3d44e57806e5d77f15f04acd05543 (patch) | |
| tree | 945fb528273de8dbc46d811bf38ef1eed60d2e36 /src/southbridge | |
| parent | 79a27ac8b810e15509ec5656fa4b44b906f09385 (diff) | |
[nb|sb]/amd/[amdfam10|sb700]: Add LPC bridge ACPI names for NB/SB
Adds the necessary plumbing for acpi_device_path() to find the LPC
bridge on the AMD Family10h/15h northbridges and SB700 southbridge.
This is necessary for TPM support since the acpi path to the LPC bridge
doesn't match the built-in default in tpm.c
This is a port of GIT hash d8a2c1fb by Tobias Diedrich.
BUG=https://ticket.coreboot.org/issues/102
Change-Id: I1c514e335e194b2864599e5419cfaee830b94e38
Signed-off-by: Timothy Pearson <tpearson@raptorengineering.com>
Reviewed-on: https://review.coreboot.org/19282
Tested-by: build bot (Jenkins)
Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src/southbridge')
| -rw-r--r-- | src/southbridge/amd/sb700/lpc.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/southbridge/amd/sb700/lpc.c b/src/southbridge/amd/sb700/lpc.c index 7b53820e0f..8270f8a450 100644 --- a/src/southbridge/amd/sb700/lpc.c +++ b/src/southbridge/amd/sb700/lpc.c @@ -271,6 +271,17 @@ static void southbridge_acpi_fill_ssdt_generator(device_t device) { amd_generate_powernow(ACPI_CPU_CONTROL, 6, 1); } +static const char *lpc_acpi_name(struct device *dev) { + if (dev->path.type != DEVICE_PATH_PCI) + return NULL; + + switch (dev->path.pci.devfn) { + case PCI_DEVFN(0x14, 3): + return "LPC"; + } + + return NULL; +} #endif @@ -283,7 +294,8 @@ static struct device_operations lpc_ops = { .set_resources = sb700_lpc_set_resources, .enable_resources = sb700_lpc_enable_resources, #if IS_ENABLED(CONFIG_HAVE_ACPI_TABLES) - .write_acpi_tables = acpi_write_hpet, + .acpi_name = lpc_acpi_name, + .write_acpi_tables = acpi_write_hpet, .acpi_fill_ssdt_generator = southbridge_acpi_fill_ssdt_generator, #endif .init = lpc_init, |