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author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/m68k/sun3x/time.c | |
download | kernel_samsung_smdk4412-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.zip kernel_samsung_smdk4412-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz kernel_samsung_smdk4412-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.bz2 |
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/m68k/sun3x/time.c')
-rw-r--r-- | arch/m68k/sun3x/time.c | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/arch/m68k/sun3x/time.c b/arch/m68k/sun3x/time.c new file mode 100644 index 0000000..6f4204f --- /dev/null +++ b/arch/m68k/sun3x/time.c @@ -0,0 +1,103 @@ +/* + * linux/arch/m68k/sun3x/time.c + * + * Sun3x-specific time handling + */ + +#include <linux/types.h> +#include <linux/kd.h> +#include <linux/init.h> +#include <linux/sched.h> +#include <linux/kernel_stat.h> +#include <linux/interrupt.h> +#include <linux/rtc.h> +#include <linux/bcd.h> + +#include <asm/irq.h> +#include <asm/io.h> +#include <asm/system.h> +#include <asm/traps.h> +#include <asm/sun3x.h> +#include <asm/sun3ints.h> +#include <asm/rtc.h> + +#include "time.h" + +#define M_CONTROL 0xf8 +#define M_SEC 0xf9 +#define M_MIN 0xfa +#define M_HOUR 0xfb +#define M_DAY 0xfc +#define M_DATE 0xfd +#define M_MONTH 0xfe +#define M_YEAR 0xff + +#define C_WRITE 0x80 +#define C_READ 0x40 +#define C_SIGN 0x20 +#define C_CALIB 0x1f + +int sun3x_hwclk(int set, struct rtc_time *t) +{ + volatile struct mostek_dt *h = + (struct mostek_dt *)(SUN3X_EEPROM+M_CONTROL); + unsigned long flags; + + local_irq_save(flags); + + if(set) { + h->csr |= C_WRITE; + h->sec = BIN2BCD(t->tm_sec); + h->min = BIN2BCD(t->tm_min); + h->hour = BIN2BCD(t->tm_hour); + h->wday = BIN2BCD(t->tm_wday); + h->mday = BIN2BCD(t->tm_mday); + h->month = BIN2BCD(t->tm_mon); + h->year = BIN2BCD(t->tm_year); + h->csr &= ~C_WRITE; + } else { + h->csr |= C_READ; + t->tm_sec = BCD2BIN(h->sec); + t->tm_min = BCD2BIN(h->min); + t->tm_hour = BCD2BIN(h->hour); + t->tm_wday = BCD2BIN(h->wday); + t->tm_mday = BCD2BIN(h->mday); + t->tm_mon = BCD2BIN(h->month); + t->tm_year = BCD2BIN(h->year); + h->csr &= ~C_READ; + } + + local_irq_restore(flags); + + return 0; +} +/* Not much we can do here */ +unsigned long sun3x_gettimeoffset (void) +{ + return 0L; +} + +#if 0 +static void sun3x_timer_tick(int irq, void *dev_id, struct pt_regs *regs) +{ + void (*vector)(int, void *, struct pt_regs *) = dev_id; + + /* Clear the pending interrupt - pulse the enable line low */ + disable_irq(5); + enable_irq(5); + + vector(irq, NULL, regs); +} +#endif + +void __init sun3x_sched_init(irqreturn_t (*vector)(int, void *, struct pt_regs *)) +{ + + sun3_disable_interrupts(); + + + /* Pulse enable low to get the clock started */ + sun3_disable_irq(5); + sun3_enable_irq(5); + sun3_enable_interrupts(); +} |