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| author | Sunil V L <sunilvl@ventanamicro.com> | 2023-05-15 11:19:25 +0530 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-06-01 08:45:12 -0700 |
| commit | 21f4f92410dc302b43c6c8307191704ba93c748d (patch) | |
| tree | 11e144ff8e51a6445280837d3e1b9ebd602c2210 /drivers/clocksource | |
| parent | cd12d206685af04b30a222a42137a700bff3c7fd (diff) | |
| download | linux-stable-21f4f92410dc302b43c6c8307191704ba93c748d.tar.gz linux-stable-21f4f92410dc302b43c6c8307191704ba93c748d.tar.bz2 linux-stable-21f4f92410dc302b43c6c8307191704ba93c748d.zip | |
clocksource/timer-riscv: Add ACPI support
Initialize the timer driver based on RHCT table on ACPI based
platforms.
Currently, ACPI doesn't support a flag to indicate that the
timer interrupt can wake up the cpu irrespective of its
power state. It will be added in future update.
Signed-off-by: Sunil V L <sunilvl@ventanamicro.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230515054928.2079268-19-sunilvl@ventanamicro.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'drivers/clocksource')
| -rw-r--r-- | drivers/clocksource/timer-riscv.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/clocksource/timer-riscv.c b/drivers/clocksource/timer-riscv.c index cecc4662293b..da3071b387eb 100644 --- a/drivers/clocksource/timer-riscv.c +++ b/drivers/clocksource/timer-riscv.c @@ -10,6 +10,7 @@ #define pr_fmt(fmt) "riscv-timer: " fmt +#include <linux/acpi.h> #include <linux/clocksource.h> #include <linux/clockchips.h> #include <linux/cpu.h> @@ -207,3 +208,13 @@ static int __init riscv_timer_init_dt(struct device_node *n) } TIMER_OF_DECLARE(riscv_timer, "riscv", riscv_timer_init_dt); + +#ifdef CONFIG_ACPI +static int __init riscv_timer_acpi_init(struct acpi_table_header *table) +{ + return riscv_timer_init_common(); +} + +TIMER_ACPI_DECLARE(aclint_mtimer, ACPI_SIG_RHCT, riscv_timer_acpi_init); + +#endif |