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authorMarek Vasut <marex@denx.de>2012-07-21 05:02:21 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-10-18 06:52:02 +0200
commitd731282e7c210bb002cc0a2f3859be4efd3120c7 (patch)
tree71bb7a9566069ccd482fa2792ce1803076658d7e /arch/arm
parentb9f4bc34ac0ee40f8d6a952036b4cd62b854aa74 (diff)
downloadu-boot-linaro-stable-d731282e7c210bb002cc0a2f3859be4efd3120c7.tar.gz
dm: wdt: arm: Move tnetv107x into drivers/watchdog/
Signed-off-by: Marek Vasut <marex@denx.de> Cc: Oliver Brown <obrown@adventnetworks.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Albert Aribaud <albert.u.boot@aribaud.net> Cc: U-Boot DM <u-boot-dm@lists.denx.de>
Diffstat (limited to 'arch/arm')
-rw-r--r--arch/arm/cpu/arm1176/tnetv107x/Makefile2
-rw-r--r--arch/arm/cpu/arm1176/tnetv107x/wdt.c180
2 files changed, 1 insertions, 181 deletions
diff --git a/arch/arm/cpu/arm1176/tnetv107x/Makefile b/arch/arm/cpu/arm1176/tnetv107x/Makefile
index c63dc925e..c1d4d678c 100644
--- a/arch/arm/cpu/arm1176/tnetv107x/Makefile
+++ b/arch/arm/cpu/arm1176/tnetv107x/Makefile
@@ -21,7 +21,7 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(SOC).o
-COBJS += aemif.o clock.o init.o mux.o timer.o wdt.o
+COBJS += aemif.o clock.o init.o mux.o timer.o
SOBJS += lowlevel_init.o
SRCS := $(START:.o=.S) $(SOBJS:.o=.S) $(COBJS:.o=.c)
diff --git a/arch/arm/cpu/arm1176/tnetv107x/wdt.c b/arch/arm/cpu/arm1176/tnetv107x/wdt.c
deleted file mode 100644
index 18aadb0c6..000000000
--- a/arch/arm/cpu/arm1176/tnetv107x/wdt.c
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
- * TNETV107X: Watchdog timer implementation (for reset)
- *
- * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-#include <common.h>
-#include <asm/io.h>
-#include <asm/arch/clock.h>
-
-#define MAX_DIV 0xFFFE0001
-
-struct wdt_regs {
- u32 kick_lock;
-#define KICK_LOCK_1 0x5555
-#define KICK_LOCK_2 0xaaaa
- u32 kick;
-
- u32 change_lock;
-#define CHANGE_LOCK_1 0x6666
-#define CHANGE_LOCK_2 0xbbbb
- u32 change;
-
- u32 disable_lock;
-#define DISABLE_LOCK_1 0x7777
-#define DISABLE_LOCK_2 0xcccc
-#define DISABLE_LOCK_3 0xdddd
- u32 disable;
-
- u32 prescale_lock;
-#define PRESCALE_LOCK_1 0x5a5a
-#define PRESCALE_LOCK_2 0xa5a5
- u32 prescale;
-};
-
-static struct wdt_regs* regs = (struct wdt_regs *)TNETV107X_WDT0_ARM_BASE;
-
-#define wdt_reg_read(reg) __raw_readl(&regs->reg)
-#define wdt_reg_write(reg, val) __raw_writel((val), &regs->reg)
-
-static int write_prescale_reg(unsigned long prescale_value)
-{
- wdt_reg_write(prescale_lock, PRESCALE_LOCK_1);
- if ((wdt_reg_read(prescale_lock) & 0x3) != 0x1)
- return -1;
-
- wdt_reg_write(prescale_lock, PRESCALE_LOCK_2);
- if ((wdt_reg_read(prescale_lock) & 0x3) != 0x3)
- return -1;
-
- wdt_reg_write(prescale, prescale_value);
-
- return 0;
-}
-
-static int write_change_reg(unsigned long initial_timer_value)
-{
- wdt_reg_write(change_lock, CHANGE_LOCK_1);
- if ((wdt_reg_read(change_lock) & 0x3) != 0x1)
- return -1;
-
- wdt_reg_write(change_lock, CHANGE_LOCK_2);
- if ((wdt_reg_read(change_lock) & 0x3) != 0x3)
- return -1;
-
- wdt_reg_write(change, initial_timer_value);
-
- return 0;
-}
-
-static int wdt_control(unsigned long disable_value)
-{
- wdt_reg_write(disable_lock, DISABLE_LOCK_1);
- if ((wdt_reg_read(disable_lock) & 0x3) != 0x1)
- return -1;
-
- wdt_reg_write(disable_lock, DISABLE_LOCK_2);
- if ((wdt_reg_read(disable_lock) & 0x3) != 0x2)
- return -1;
-
- wdt_reg_write(disable_lock, DISABLE_LOCK_3);
- if ((wdt_reg_read(disable_lock) & 0x3) != 0x3)
- return -1;
-
- wdt_reg_write(disable, disable_value);
- return 0;
-}
-
-static int wdt_set_period(unsigned long msec)
-{
- unsigned long change_value, count_value;
- unsigned long prescale_value = 1;
- unsigned long refclk_khz, maxdiv;
- int ret;
-
- refclk_khz = clk_get_rate(TNETV107X_LPSC_WDT_ARM);
- maxdiv = (MAX_DIV / refclk_khz);
-
- if ((!msec) || (msec > maxdiv))
- return -1;
-
- count_value = refclk_khz * msec;
- if (count_value > 0xffff) {
- change_value = count_value / 0xffff + 1;
- prescale_value = count_value / change_value;
- } else {
- change_value = count_value;
- }
-
- ret = write_prescale_reg(prescale_value - 1);
- if (ret)
- return ret;
-
- ret = write_change_reg(change_value);
- if (ret)
- return ret;
-
- return 0;
-}
-
-unsigned long last_wdt = -1;
-
-int wdt_start(unsigned long msecs)
-{
- int ret;
- ret = wdt_control(0);
- if (ret)
- return ret;
- ret = wdt_set_period(msecs);
- if (ret)
- return ret;
- ret = wdt_control(1);
- if (ret)
- return ret;
- ret = wdt_kick();
- last_wdt = msecs;
- return ret;
-}
-
-int wdt_stop(void)
-{
- last_wdt = -1;
- return wdt_control(0);
-}
-
-int wdt_kick(void)
-{
- wdt_reg_write(kick_lock, KICK_LOCK_1);
- if ((wdt_reg_read(kick_lock) & 0x3) != 0x1)
- return -1;
-
- wdt_reg_write(kick_lock, KICK_LOCK_2);
- if ((wdt_reg_read(kick_lock) & 0x3) != 0x3)
- return -1;
-
- wdt_reg_write(kick, 1);
- return 0;
-}
-
-void reset_cpu(ulong addr)
-{
- clk_enable(TNETV107X_LPSC_WDT_ARM);
- wdt_start(1);
- wdt_kick();
-}