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authorThomas Chou <thomas@wytron.com.tw>2015-10-22 22:28:53 +0800
committerThomas Chou <thomas@wytron.com.tw>2015-10-23 07:37:03 +0800
commita54915d8a13ce800645655728a2f203aeda98740 (patch)
treeb78265a3c855d30a49a75c9271ae63cd5bd6e1c8 /arch/nios2
parent8f41b8785be20da320a544206f8c6e4f352bc9f4 (diff)
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nios2: convert altera timer to driver model
Convert altera timer to driver model. Signed-off-by: Thomas Chou <thomas@wytron.com.tw> Acked-by: Chin Liang See <clsee@altera.com>
Diffstat (limited to 'arch/nios2')
-rw-r--r--arch/nios2/cpu/Makefile2
-rw-r--r--arch/nios2/cpu/timer.c65
2 files changed, 1 insertions, 66 deletions
diff --git a/arch/nios2/cpu/Makefile b/arch/nios2/cpu/Makefile
index c85e261..3fe7847 100644
--- a/arch/nios2/cpu/Makefile
+++ b/arch/nios2/cpu/Makefile
@@ -7,5 +7,5 @@
extra-y = start.o
obj-y = exceptions.o
-obj-y += cpu.o interrupts.o sysid.o timer.o traps.o
+obj-y += cpu.o interrupts.o sysid.o traps.o
obj-y += fdt.o
diff --git a/arch/nios2/cpu/timer.c b/arch/nios2/cpu/timer.c
deleted file mode 100644
index b8aa9dd..0000000
--- a/arch/nios2/cpu/timer.c
+++ /dev/null
@@ -1,65 +0,0 @@
-/*
- * (C) Copyright 2000-2002
- * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * (C) Copyright 2004, Psyent Corporation <www.psyent.com>
- * Scott McNutt <smcnutt@psyent.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/nios2.h>
-#include <asm/types.h>
-#include <asm/io.h>
-
-struct nios_timer {
- u32 status; /* Timer status reg */
- u32 control; /* Timer control reg */
- u32 periodl; /* Timeout period low */
- u32 periodh; /* Timeout period high */
- u32 snapl; /* Snapshot low */
- u32 snaph; /* Snapshot high */
-};
-
-/* status register */
-#define NIOS_TIMER_TO (1 << 0) /* Timeout */
-#define NIOS_TIMER_RUN (1 << 1) /* Timer running */
-
-/* control register */
-#define NIOS_TIMER_ITO (1 << 0) /* Timeout interrupt enable */
-#define NIOS_TIMER_CONT (1 << 1) /* Continuous mode */
-#define NIOS_TIMER_START (1 << 2) /* Start timer */
-#define NIOS_TIMER_STOP (1 << 3) /* Stop timer */
-
-/*************************************************************************/
-unsigned long notrace timer_read_counter(void)
-{
- struct nios_timer *tmr = (struct nios_timer *)CONFIG_SYS_TIMER_BASE;
- u32 val;
-
- /* Trigger update */
- writel(0x0, &tmr->snapl);
-
- /* Read timer value */
- val = readl(&tmr->snapl) & 0xffff;
- val |= (readl(&tmr->snaph) & 0xffff) << 16;
-
- return ~val;
-}
-
-int timer_init(void)
-{
- struct nios_timer *tmr = (struct nios_timer *)CONFIG_SYS_TIMER_BASE;
-
- writel(0, &tmr->status);
- writel(0, &tmr->control);
- writel(NIOS_TIMER_STOP, &tmr->control);
-
- writel(0xffff, &tmr->periodl);
- writel(0xffff, &tmr->periodh);
-
- writel(NIOS_TIMER_CONT | NIOS_TIMER_START, &tmr->control);
-
- return 0;
-}