summaryrefslogtreecommitdiff
path: root/arch/i386/cpu/sc520/sc520_timer.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/i386/cpu/sc520/sc520_timer.c')
-rw-r--r--arch/i386/cpu/sc520/sc520_timer.c90
1 files changed, 0 insertions, 90 deletions
diff --git a/arch/i386/cpu/sc520/sc520_timer.c b/arch/i386/cpu/sc520/sc520_timer.c
deleted file mode 100644
index 1bcfe67..0000000
--- a/arch/i386/cpu/sc520/sc520_timer.c
+++ /dev/null
@@ -1,90 +0,0 @@
-/*
- * (C) Copyright 2008-2011
- * Graeme Russ, <graeme.russ@gmail.com>
- *
- * (C) Copyright 2002
- * Daniel Engström, Omicron Ceti AB, <daniel@omicron.se>
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of
- * the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/interrupt.h>
-#include <asm/ic/sc520.h>
-
-void sc520_timer_isr(void)
-{
- /* Ack the GP Timer Interrupt */
- writeb(0x02, &sc520_mmcr->gptmrsta);
-}
-
-int timer_init(void)
-{
- /* Register the SC520 specific timer interrupt handler */
- register_timer_isr (sc520_timer_isr);
-
- /* Install interrupt handler for GP Timer 1 */
- irq_install_handler (0, timer_isr, NULL);
-
- /* Map GP Timer 1 to Master PIC IR0 */
- writeb(0x01, &sc520_mmcr->gp_tmr_int_map[1]);
-
- /* Disable GP Timers 1 & 2 - Allow configuration writes */
- writew(0x4000, &sc520_mmcr->gptmr1ctl);
- writew(0x4000, &sc520_mmcr->gptmr2ctl);
-
- /* Reset GP Timers 1 & 2 */
- writew(0x0000, &sc520_mmcr->gptmr1cnt);
- writew(0x0000, &sc520_mmcr->gptmr2cnt);
-
- /* Setup GP Timer 2 as a 100kHz (10us) prescaler */
- writew(83, &sc520_mmcr->gptmr2maxcmpa);
- writew(0xc001, &sc520_mmcr->gptmr2ctl);
-
- /* Setup GP Timer 1 as a 1000 Hz (1ms) interrupt generator */
- writew(100, &sc520_mmcr->gptmr1maxcmpa);
- writew(0xe009, &sc520_mmcr->gptmr1ctl);
-
- unmask_irq (0);
-
- /* Clear the GP Timer 1 status register to get the show rolling*/
- writeb(0x02, &sc520_mmcr->gptmrsta);
-
- return 0;
-}
-
-/* Allow boards to override udelay implementation */
-void __udelay(unsigned long usec)
- __attribute__((weak, alias("sc520_udelay")));
-
-void sc520_udelay(unsigned long usec)
-{
- int m = 0;
- long u;
- long temp;
-
- temp = readw(&sc520_mmcr->swtmrmilli);
- temp = readw(&sc520_mmcr->swtmrmicro);
-
- do {
- m += readw(&sc520_mmcr->swtmrmilli);
- u = readw(&sc520_mmcr->swtmrmicro) + (m * 1000);
- } while (u < usec);
-}