diff options
| author | Prarit Bhargava <prarit@redhat.com> | 2018-01-18 18:09:51 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-02-07 13:39:58 +0300 |
| commit | 0231d00082f61cfe03f2b7c27e5356f8cdf0312c (patch) | |
| tree | 24f036cb972640ccdeed395a55d1c37571fcb3db /include/linux/acpi.h | |
| parent | 890674343bb2d546825f713542b1e199f0728732 (diff) | |
| download | linux-0231d00082f61cfe03f2b7c27e5356f8cdf0312c.tar.xz | |
ACPI: SPCR: Make SPCR available to x86
SPCR is currently only enabled or ARM64 and x86 can use SPCR to setup
an early console.
General fixes include updating Documentation & Kconfig (for x86),
updating comments, and changing parse_spcr() to acpi_parse_spcr(),
and earlycon_init_is_deferred to earlycon_acpi_spcr_enable to be
more descriptive.
On x86, many systems have a valid SPCR table but the table version is
not 2 so the table version check must be a warning.
On ARM64 when the kernel parameter earlycon is used both the early console
and console are enabled. On x86, only the earlycon should be enabled by
by default. Modify acpi_parse_spcr() to allow options for initializing
the early console and console separately.
Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Mark Salter <msalter@redhat.com>
Tested-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/acpi.h')
| -rw-r--r-- | include/linux/acpi.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/acpi.h b/include/linux/acpi.h index b8f4c3c776e5..e6b98a32495f 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -1249,9 +1249,12 @@ static inline bool acpi_has_watchdog(void) { return false; } #ifdef CONFIG_ACPI_SPCR_TABLE extern bool qdf2400_e44_present; -int parse_spcr(bool earlycon); +int acpi_parse_spcr(bool enable_earlycon, bool enable_console); #else -static inline int parse_spcr(bool earlycon) { return 0; } +static inline int acpi_parse_spcr(bool enable_earlycon, bool enable_console) +{ + return 0; +} #endif #if IS_ENABLED(CONFIG_ACPI_GENERIC_GSI) |