diff options
Diffstat (limited to 'arch/x86/cpu/sc520/sc520_timer.c')
| -rw-r--r-- | arch/x86/cpu/sc520/sc520_timer.c | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/arch/x86/cpu/sc520/sc520_timer.c b/arch/x86/cpu/sc520/sc520_timer.c deleted file mode 100644 index 41f121f86..000000000 --- a/arch/x86/cpu/sc520/sc520_timer.c +++ /dev/null @@ -1,89 +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/arch/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; - - readw(&sc520_mmcr->swtmrmilli); - readw(&sc520_mmcr->swtmrmicro); - - do { - m += readw(&sc520_mmcr->swtmrmilli); - u = readw(&sc520_mmcr->swtmrmicro) + (m * 1000); - } while (u < usec); -} |