From 4157a04d5d7def8661559cd98eb285a520d50075 Mon Sep 17 00:00:00 2001 From: Philippe De Muyter Date: Sat, 22 Jan 2011 00:21:25 +0100 Subject: m68knommu: Rename m548x_wdt.c to m54xx_wdt.c All m548x files were renamed to m54xx, except m548x_wdt.c. Fix that. Signed-off-by: Philippe De Muyter Signed-off-by: Greg Ungerer --- drivers/watchdog/Kconfig | 6 +- drivers/watchdog/Makefile | 2 +- drivers/watchdog/m548x_wdt.c | 227 ------------------------------------------- drivers/watchdog/m54xx_wdt.c | 227 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 231 insertions(+), 231 deletions(-) delete mode 100644 drivers/watchdog/m548x_wdt.c create mode 100644 drivers/watchdog/m54xx_wdt.c (limited to 'drivers/watchdog') diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 2e2400e7322..31649b7b672 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -862,12 +862,12 @@ config SBC_EPX_C3_WATCHDOG # M68K Architecture -config M548x_WATCHDOG - tristate "MCF548x watchdog support" +config M54xx_WATCHDOG + tristate "MCF54xx watchdog support" depends on M548x help To compile this driver as a module, choose M here: the - module will be called m548x_wdt. + module will be called m54xx_wdt. # MIPS Architecture diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index dd776651917..20e44c4782b 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -106,7 +106,7 @@ obj-$(CONFIG_SBC_EPX_C3_WATCHDOG) += sbc_epx_c3.o # M32R Architecture # M68K Architecture -obj-$(CONFIG_M548x_WATCHDOG) += m548x_wdt.o +obj-$(CONFIG_M54xx_WATCHDOG) += m54xx_wdt.o # MIPS Architecture obj-$(CONFIG_ATH79_WDT) += ath79_wdt.o diff --git a/drivers/watchdog/m548x_wdt.c b/drivers/watchdog/m548x_wdt.c deleted file mode 100644 index 4d43286074a..00000000000 --- a/drivers/watchdog/m548x_wdt.c +++ /dev/null @@ -1,227 +0,0 @@ -/* - * drivers/watchdog/m54xx_wdt.c - * - * Watchdog driver for ColdFire MCF547x & MCF548x processors - * Copyright 2010 (c) Philippe De Muyter - * - * Adapted from the IXP4xx watchdog driver, which carries these notices: - * - * Author: Deepak Saxena - * - * Copyright 2004 (c) MontaVista, Software, Inc. - * Based on sa1100 driver, Copyright (C) 2000 Oleg Drokin - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include - -static int nowayout = WATCHDOG_NOWAYOUT; -static unsigned int heartbeat = 30; /* (secs) Default is 0.5 minute */ -static unsigned long wdt_status; - -#define WDT_IN_USE 0 -#define WDT_OK_TO_CLOSE 1 - -static void wdt_enable(void) -{ - unsigned int gms0; - - /* preserve GPIO usage, if any */ - gms0 = __raw_readl(MCF_MBAR + MCF_GPT_GMS0); - if (gms0 & MCF_GPT_GMS_TMS_GPIO) - gms0 &= (MCF_GPT_GMS_TMS_GPIO | MCF_GPT_GMS_GPIO_MASK - | MCF_GPT_GMS_OD); - else - gms0 = MCF_GPT_GMS_TMS_GPIO | MCF_GPT_GMS_OD; - __raw_writel(gms0, MCF_MBAR + MCF_GPT_GMS0); - __raw_writel(MCF_GPT_GCIR_PRE(heartbeat*(MCF_BUSCLK/0xffff)) | - MCF_GPT_GCIR_CNT(0xffff), MCF_MBAR + MCF_GPT_GCIR0); - gms0 |= MCF_GPT_GMS_OCPW(0xA5) | MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE; - __raw_writel(gms0, MCF_MBAR + MCF_GPT_GMS0); -} - -static void wdt_disable(void) -{ - unsigned int gms0; - - /* disable watchdog */ - gms0 = __raw_readl(MCF_MBAR + MCF_GPT_GMS0); - gms0 &= ~(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE); - __raw_writel(gms0, MCF_MBAR + MCF_GPT_GMS0); -} - -static void wdt_keepalive(void) -{ - unsigned int gms0; - - gms0 = __raw_readl(MCF_MBAR + MCF_GPT_GMS0); - gms0 |= MCF_GPT_GMS_OCPW(0xA5); - __raw_writel(gms0, MCF_MBAR + MCF_GPT_GMS0); -} - -static int m54xx_wdt_open(struct inode *inode, struct file *file) -{ - if (test_and_set_bit(WDT_IN_USE, &wdt_status)) - return -EBUSY; - - clear_bit(WDT_OK_TO_CLOSE, &wdt_status); - wdt_enable(); - return nonseekable_open(inode, file); -} - -static ssize_t m54xx_wdt_write(struct file *file, const char *data, - size_t len, loff_t *ppos) -{ - if (len) { - if (!nowayout) { - size_t i; - - clear_bit(WDT_OK_TO_CLOSE, &wdt_status); - - for (i = 0; i != len; i++) { - char c; - - if (get_user(c, data + i)) - return -EFAULT; - if (c == 'V') - set_bit(WDT_OK_TO_CLOSE, &wdt_status); - } - } - wdt_keepalive(); - } - return len; -} - -static const struct watchdog_info ident = { - .options = WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT | - WDIOF_KEEPALIVEPING, - .identity = "Coldfire M54xx Watchdog", -}; - -static long m54xx_wdt_ioctl(struct file *file, unsigned int cmd, - unsigned long arg) -{ - int ret = -ENOTTY; - int time; - - switch (cmd) { - case WDIOC_GETSUPPORT: - ret = copy_to_user((struct watchdog_info *)arg, &ident, - sizeof(ident)) ? -EFAULT : 0; - break; - - case WDIOC_GETSTATUS: - ret = put_user(0, (int *)arg); - break; - - case WDIOC_GETBOOTSTATUS: - ret = put_user(0, (int *)arg); - break; - - case WDIOC_KEEPALIVE: - wdt_keepalive(); - ret = 0; - break; - - case WDIOC_SETTIMEOUT: - ret = get_user(time, (int *)arg); - if (ret) - break; - - if (time <= 0 || time > 30) { - ret = -EINVAL; - break; - } - - heartbeat = time; - wdt_enable(); - /* Fall through */ - - case WDIOC_GETTIMEOUT: - ret = put_user(heartbeat, (int *)arg); - break; - } - return ret; -} - -static int m54xx_wdt_release(struct inode *inode, struct file *file) -{ - if (test_bit(WDT_OK_TO_CLOSE, &wdt_status)) - wdt_disable(); - else { - printk(KERN_CRIT "WATCHDOG: Device closed unexpectedly - " - "timer will not stop\n"); - wdt_keepalive(); - } - clear_bit(WDT_IN_USE, &wdt_status); - clear_bit(WDT_OK_TO_CLOSE, &wdt_status); - - return 0; -} - - -static const struct file_operations m54xx_wdt_fops = { - .owner = THIS_MODULE, - .llseek = no_llseek, - .write = m54xx_wdt_write, - .unlocked_ioctl = m54xx_wdt_ioctl, - .open = m54xx_wdt_open, - .release = m54xx_wdt_release, -}; - -static struct miscdevice m54xx_wdt_miscdev = { - .minor = WATCHDOG_MINOR, - .name = "watchdog", - .fops = &m54xx_wdt_fops, -}; - -static int __init m54xx_wdt_init(void) -{ - if (!request_mem_region(MCF_MBAR + MCF_GPT_GCIR0, 4, - "Coldfire M54xx Watchdog")) { - printk(KERN_WARNING - "Coldfire M54xx Watchdog : I/O region busy\n"); - return -EBUSY; - } - printk(KERN_INFO "ColdFire watchdog driver is loaded.\n"); - - return misc_register(&m54xx_wdt_miscdev); -} - -static void __exit m54xx_wdt_exit(void) -{ - misc_deregister(&m54xx_wdt_miscdev); - release_mem_region(MCF_MBAR + MCF_GPT_GCIR0, 4); -} - -module_init(m54xx_wdt_init); -module_exit(m54xx_wdt_exit); - -MODULE_AUTHOR("Philippe De Muyter "); -MODULE_DESCRIPTION("Coldfire M54xx Watchdog"); - -module_param(heartbeat, int, 0); -MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds (default 30s)"); - -module_param(nowayout, int, 0); -MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started"); - -MODULE_LICENSE("GPL"); -MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); diff --git a/drivers/watchdog/m54xx_wdt.c b/drivers/watchdog/m54xx_wdt.c new file mode 100644 index 00000000000..4d43286074a --- /dev/null +++ b/drivers/watchdog/m54xx_wdt.c @@ -0,0 +1,227 @@ +/* + * drivers/watchdog/m54xx_wdt.c + * + * Watchdog driver for ColdFire MCF547x & MCF548x processors + * Copyright 2010 (c) Philippe De Muyter + * + * Adapted from the IXP4xx watchdog driver, which carries these notices: + * + * Author: Deepak Saxena + * + * Copyright 2004 (c) MontaVista, Software, Inc. + * Based on sa1100 driver, Copyright (C) 2000 Oleg Drokin + * + * This file is licensed under the terms of the GNU General Public + * License version 2. This program is licensed "as is" without any + * warranty of any kind, whether express or implied. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include + +static int nowayout = WATCHDOG_NOWAYOUT; +static unsigned int heartbeat = 30; /* (secs) Default is 0.5 minute */ +static unsigned long wdt_status; + +#define WDT_IN_USE 0 +#define WDT_OK_TO_CLOSE 1 + +static void wdt_enable(void) +{ + unsigned int gms0; + + /* preserve GPIO usage, if any */ + gms0 = __raw_readl(MCF_MBAR + MCF_GPT_GMS0); + if (gms0 & MCF_GPT_GMS_TMS_GPIO) + gms0 &= (MCF_GPT_GMS_TMS_GPIO | MCF_GPT_GMS_GPIO_MASK + | MCF_GPT_GMS_OD); + else + gms0 = MCF_GPT_GMS_TMS_GPIO | MCF_GPT_GMS_OD; + __raw_writel(gms0, MCF_MBAR + MCF_GPT_GMS0); + __raw_writel(MCF_GPT_GCIR_PRE(heartbeat*(MCF_BUSCLK/0xffff)) | + MCF_GPT_GCIR_CNT(0xffff), MCF_MBAR + MCF_GPT_GCIR0); + gms0 |= MCF_GPT_GMS_OCPW(0xA5) | MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE; + __raw_writel(gms0, MCF_MBAR + MCF_GPT_GMS0); +} + +static void wdt_disable(void) +{ + unsigned int gms0; + + /* disable watchdog */ + gms0 = __raw_readl(MCF_MBAR + MCF_GPT_GMS0); + gms0 &= ~(MCF_GPT_GMS_WDEN | MCF_GPT_GMS_CE); + __raw_writel(gms0, MCF_MBAR + MCF_GPT_GMS0); +} + +static void wdt_keepalive(void) +{ + unsigned int gms0; + + gms0 = __raw_readl(MCF_MBAR + MCF_GPT_GMS0); + gms0 |= MCF_GPT_GMS_OCPW(0xA5); + __raw_writel(gms0, MCF_MBAR + MCF_GPT_GMS0); +} + +static int m54xx_wdt_open(struct inode *inode, struct file *file) +{ + if (test_and_set_bit(WDT_IN_USE, &wdt_status)) + return -EBUSY; + + clear_bit(WDT_OK_TO_CLOSE, &wdt_status); + wdt_enable(); + return nonseekable_open(inode, file); +} + +static ssize_t m54xx_wdt_write(struct file *file, const char *data, + size_t len, loff_t *ppos) +{ + if (len) { + if (!nowayout) { + size_t i; + + clear_bit(WDT_OK_TO_CLOSE, &wdt_status); + + for (i = 0; i != len; i++) { + char c; + + if (get_user(c, data + i)) + return -EFAULT; + if (c == 'V') + set_bit(WDT_OK_TO_CLOSE, &wdt_status); + } + } + wdt_keepalive(); + } + return len; +} + +static const struct watchdog_info ident = { + .options = WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT | + WDIOF_KEEPALIVEPING, + .identity = "Coldfire M54xx Watchdog", +}; + +static long m54xx_wdt_ioctl(struct file *file, unsigned int cmd, + unsigned long arg) +{ + int ret = -ENOTTY; + int time; + + switch (cmd) { + case WDIOC_GETSUPPORT: + ret = copy_to_user((struct watchdog_info *)arg, &ident, + sizeof(ident)) ? -EFAULT : 0; + break; + + case WDIOC_GETSTATUS: + ret = put_user(0, (int *)arg); + break; + + case WDIOC_GETBOOTSTATUS: + ret = put_user(0, (int *)arg); + break; + + case WDIOC_KEEPALIVE: + wdt_keepalive(); + ret = 0; + break; + + case WDIOC_SETTIMEOUT: + ret = get_user(time, (int *)arg); + if (ret) + break; + + if (time <= 0 || time > 30) { + ret = -EINVAL; + break; + } + + heartbeat = time; + wdt_enable(); + /* Fall through */ + + case WDIOC_GETTIMEOUT: + ret = put_user(heartbeat, (int *)arg); + break; + } + return ret; +} + +static int m54xx_wdt_release(struct inode *inode, struct file *file) +{ + if (test_bit(WDT_OK_TO_CLOSE, &wdt_status)) + wdt_disable(); + else { + printk(KERN_CRIT "WATCHDOG: Device closed unexpectedly - " + "timer will not stop\n"); + wdt_keepalive(); + } + clear_bit(WDT_IN_USE, &wdt_status); + clear_bit(WDT_OK_TO_CLOSE, &wdt_status); + + return 0; +} + + +static const struct file_operations m54xx_wdt_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .write = m54xx_wdt_write, + .unlocked_ioctl = m54xx_wdt_ioctl, + .open = m54xx_wdt_open, + .release = m54xx_wdt_release, +}; + +static struct miscdevice m54xx_wdt_miscdev = { + .minor = WATCHDOG_MINOR, + .name = "watchdog", + .fops = &m54xx_wdt_fops, +}; + +static int __init m54xx_wdt_init(void) +{ + if (!request_mem_region(MCF_MBAR + MCF_GPT_GCIR0, 4, + "Coldfire M54xx Watchdog")) { + printk(KERN_WARNING + "Coldfire M54xx Watchdog : I/O region busy\n"); + return -EBUSY; + } + printk(KERN_INFO "ColdFire watchdog driver is loaded.\n"); + + return misc_register(&m54xx_wdt_miscdev); +} + +static void __exit m54xx_wdt_exit(void) +{ + misc_deregister(&m54xx_wdt_miscdev); + release_mem_region(MCF_MBAR + MCF_GPT_GCIR0, 4); +} + +module_init(m54xx_wdt_init); +module_exit(m54xx_wdt_exit); + +MODULE_AUTHOR("Philippe De Muyter "); +MODULE_DESCRIPTION("Coldfire M54xx Watchdog"); + +module_param(heartbeat, int, 0); +MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds (default 30s)"); + +module_param(nowayout, int, 0); +MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started"); + +MODULE_LICENSE("GPL"); +MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR); -- cgit v1.2.3-70-g09d2