diff options
Diffstat (limited to 'arch/mips/philips/pnx8550/common/time.c')
| -rw-r--r-- | arch/mips/philips/pnx8550/common/time.c | 105 |
1 files changed, 0 insertions, 105 deletions
diff --git a/arch/mips/philips/pnx8550/common/time.c b/arch/mips/philips/pnx8550/common/time.c deleted file mode 100644 index 70664ea96b9..00000000000 --- a/arch/mips/philips/pnx8550/common/time.c +++ /dev/null @@ -1,105 +0,0 @@ -/* - * Copyright 2001, 2002, 2003 MontaVista Software Inc. - * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net - * - * Common time service routines for MIPS machines. See - * Documents/MIPS/README.txt. - * - * 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. - */ -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/sched.h> -#include <linux/param.h> -#include <linux/time.h> -#include <linux/timer.h> -#include <linux/smp.h> -#include <linux/kernel_stat.h> -#include <linux/spinlock.h> -#include <linux/interrupt.h> -#include <linux/module.h> - -#include <asm/bootinfo.h> -#include <asm/cpu.h> -#include <asm/time.h> -#include <asm/hardirq.h> -#include <asm/div64.h> -#include <asm/debug.h> - -#include <int.h> -#include <cm.h> - -extern unsigned int mips_hpt_frequency; - -/* - * pnx8550_time_init() - it does the following things: - * - * 1) board_time_init() - - * a) (optional) set up RTC routines, - * b) (optional) calibrate and set the mips_hpt_frequency - * (only needed if you intended to use fixed_rate_gettimeoffset - * or use cpu counter as timer interrupt source) - */ - -void pnx8550_time_init(void) -{ - unsigned int n; - unsigned int m; - unsigned int p; - unsigned int pow2p; - - /* PLL0 sets MIPS clock (PLL1 <=> TM1, PLL6 <=> TM2, PLL5 <=> mem) */ - /* (but only if CLK_MIPS_CTL select value [bits 3:1] is 1: FIXME) */ - - n = (PNX8550_CM_PLL0_CTL & PNX8550_CM_PLL_N_MASK) >> 16; - m = (PNX8550_CM_PLL0_CTL & PNX8550_CM_PLL_M_MASK) >> 8; - p = (PNX8550_CM_PLL0_CTL & PNX8550_CM_PLL_P_MASK) >> 2; - pow2p = (1 << p); - - db_assert(m != 0 && pow2p != 0); - - /* - * Compute the frequency as in the PNX8550 User Manual 1.0, p.186 - * (a.k.a. 8-10). Divide by HZ for a timer offset that results in - * HZ timer interrupts per second. - */ - mips_hpt_frequency = 27UL * ((1000000UL * n)/(m * pow2p)); -} - -/* - * pnx8550_timer_setup() - it does the following things: - * - * 5) board_timer_setup() - - * a) (optional) over-write any choices made above by time_init(). - * b) machine specific code should setup the timer irqaction. - * c) enable the timer interrupt - */ - -void __init pnx8550_timer_setup(struct irqaction *irq) -{ - int configPR; - - setup_irq(PNX8550_INT_TIMER1, irq); - - /* Start timer1 */ - configPR = read_c0_config7(); - configPR &= ~0x00000008; - write_c0_config7(configPR); - - /* Timer 2 stop */ - configPR = read_c0_config7(); - configPR |= 0x00000010; - write_c0_config7(configPR); - - write_c0_count2(0); - write_c0_compare2(0xffffffff); - - /* Timer 3 stop */ - configPR = read_c0_config7(); - configPR |= 0x00000020; - write_c0_config7(configPR); -} |
