diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /include/linux/i8253.h | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/linux/i8253.h')
-rw-r--r-- | include/linux/i8253.h | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/include/linux/i8253.h b/include/linux/i8253.h new file mode 100644 index 000000000..8336b2f6f --- /dev/null +++ b/include/linux/i8253.h @@ -0,0 +1,30 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Machine specific IO port address definition for generic. + * Written by Osamu Tomita <tomita@cinet.co.jp> + */ +#ifndef __LINUX_I8253_H +#define __LINUX_I8253_H + +#include <linux/param.h> +#include <linux/spinlock.h> +#include <linux/timex.h> + +/* i8253A PIT registers */ +#define PIT_MODE 0x43 +#define PIT_CH0 0x40 +#define PIT_CH2 0x42 + +#define PIT_LATCH ((PIT_TICK_RATE + HZ/2) / HZ) + +extern raw_spinlock_t i8253_lock; +extern bool i8253_clear_counter_on_shutdown; +extern struct clock_event_device i8253_clockevent; +extern void clockevent_i8253_init(bool oneshot); + +extern void setup_pit_timer(void); + +#endif /* __LINUX_I8253_H */ |