m68k: Drop CONFIG_MCFPIT support

[platform/kernel/u-boot.git] / arch / m68k / lib / time.c

diff --git a/arch/m68k/lib/time.c b/arch/m68k/lib/time.c
index 7eaea5e..bde1f4c 100644 (file)
--- a/arch/m68k/lib/time.c
+++ b/arch/m68k/lib/time.c
@@ -1,29 +1,14 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2003 Josef Baumgartner <josef.baumgartner@telex.de>
  *
  * (C) Copyright 2000
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * 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 <irq_func.h>
+#include <time.h>
 
 #include <asm/timer.h>
 #include <asm/immap.h>
@@ -91,7 +76,7 @@ void dtimer_interrupt(void *not_used)
        }
 }
 
-void timer_init(void)
+int timer_init(void)
 {
        volatile dtmr_t *timerp = (dtmr_t *) (CONFIG_SYS_TMR_BASE);
 
@@ -114,11 +99,8 @@ void timer_init(void)
        /* set a period of 1us, set timer mode to restart and enable timer and interrupt */
        timerp->tmr = CONFIG_SYS_TIMER_PRESCALER | DTIM_DTMR_CLK_DIV1 |
            DTIM_DTMR_FRR | DTIM_DTMR_ORRI | DTIM_DTMR_RST_EN;
-}
 
-void reset_timer(void)
-{
-       timestamp = 0;
+       return 0;
 }
 
 ulong get_timer(ulong base)
@@ -126,81 +108,8 @@ ulong get_timer(ulong base)
        return (timestamp - base);
 }
 
-void set_timer(ulong t)
-{
-       timestamp = t;
-}
 #endif                         /* CONFIG_MCFTMR */
 
-#if defined(CONFIG_MCFPIT)
-#if !defined(CONFIG_SYS_PIT_BASE)
-#      error   "CONFIG_SYS_PIT_BASE not defined!"
-#endif
-
-static unsigned short lastinc;
-
-void __udelay(unsigned long usec)
-{
-       volatile pit_t *timerp = (pit_t *) (CONFIG_SYS_UDELAY_BASE);
-       uint tmp;
-
-       while (usec > 0) {
-               if (usec > 65000)
-                       tmp = 65000;
-               else
-                       tmp = usec;
-               usec = usec - tmp;
-
-               /* Set up TIMER 3 as timebase clock */
-               timerp->pcsr = PIT_PCSR_OVW;
-               timerp->pmr = 0;
-               /* set period to 1 us */
-               timerp->pcsr |= PIT_PCSR_PRE(CONFIG_SYS_PIT_PRESCALE) | PIT_PCSR_EN;
-
-               timerp->pmr = tmp;
-               while (timerp->pcntr > 0) ;
-       }
-}
-
-void timer_init(void)
-{
-       volatile pit_t *timerp = (pit_t *) (CONFIG_SYS_PIT_BASE);
-       timestamp = 0;
-
-       /* Set up TIMER 4 as poll clock */
-       timerp->pcsr = PIT_PCSR_OVW;
-       timerp->pmr = lastinc = 0;
-       timerp->pcsr |= PIT_PCSR_PRE(CONFIG_SYS_PIT_PRESCALE) | PIT_PCSR_EN;
-}
-
-void set_timer(ulong t)
-{
-       volatile pit_t *timerp = (pit_t *) (CONFIG_SYS_PIT_BASE);
-
-       timestamp = 0;
-       timerp->pmr = lastinc = 0;
-}
-
-ulong get_timer(ulong base)
-{
-       unsigned short now, diff;
-       volatile pit_t *timerp = (pit_t *) (CONFIG_SYS_PIT_BASE);
-
-       now = timerp->pcntr;
-       diff = -(now - lastinc);
-
-       timestamp += diff;
-       lastinc = now;
-       return timestamp - base;
-}
-
-void wait_ticks(unsigned long ticks)
-{
-       set_timer(0);
-       while (get_timer(0) < ticks) ;
-}
-#endif                         /* CONFIG_MCFPIT */
-
 /*
  * This function is derived from PowerPC code (read timebase as long long).
  * On M68K it just returns the timer value.
@@ -221,7 +130,5 @@ unsigned long usec2ticks(unsigned long usec)
  */
 ulong get_tbclk(void)
 {
-       ulong tbclk;
-       tbclk = CONFIG_SYS_HZ;
-       return tbclk;
+       return CONFIG_SYS_HZ;
 }