[WATCHDOG] rc32434_wdt: clean-up driver
Clean-up the rc32434 driver code: - name the platform driver rc32434_wdt_driver - Replace KBUILD_MODNAME ": " with PFX define. - Cleanup include files - Order the ioctl's Signed-off-by: Phil Sutter <n0-1@freewrt.org> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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371d3525e3
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@ -17,22 +17,22 @@
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*
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/fs.h>
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#include <linux/mm.h>
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#include <linux/miscdevice.h>
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#include <linux/watchdog.h>
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#include <linux/reboot.h>
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#include <linux/smp_lock.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/uaccess.h>
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#include <linux/module.h> /* For module specific items */
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#include <linux/moduleparam.h> /* For new moduleparam's */
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#include <linux/types.h> /* For standard types (like size_t) */
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#include <linux/errno.h> /* For the -ENODEV/... values */
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#include <linux/kernel.h> /* For printk/panic/... */
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#include <linux/fs.h> /* For file operations */
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#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV
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(WATCHDOG_MINOR) */
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#include <linux/watchdog.h> /* For the watchdog specific items */
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#include <linux/init.h> /* For __init/__exit/... */
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#include <linux/platform_device.h> /* For platform_driver framework */
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#include <linux/uaccess.h> /* For copy_to_user/put_user/... */
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#include <asm/bootinfo.h>
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#include <asm/time.h>
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#include <asm/mach-rc32434/integ.h>
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#include <asm/mach-rc32434/integ.h> /* For the Watchdog registers */
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#define PFX KBUILD_MODNAME ": "
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#define VERSION "0.4"
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@ -90,12 +90,16 @@ static void rc32434_wdt_start(void)
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or = 1 << RC32434_WTC_EN;
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SET_BITS(wdt_reg->wtc, or, nand);
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printk(KERN_INFO PFX "Started watchdog timer.\n");
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}
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static void rc32434_wdt_stop(void)
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{
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/* Disable WDT */
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SET_BITS(wdt_reg->wtc, 0, 1 << RC32434_WTC_EN);
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printk(KERN_INFO PFX "Stopped watchdog timer.\n");
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}
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static int rc32434_wdt_set(int new_timeout)
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@ -103,8 +107,7 @@ static int rc32434_wdt_set(int new_timeout)
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int max_to = WTCOMP2SEC((u32)-1);
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if (new_timeout < 0 || new_timeout > max_to) {
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printk(KERN_ERR KBUILD_MODNAME
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": timeout value must be between 0 and %d",
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printk(KERN_ERR PFX "timeout value must be between 0 and %d",
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max_to);
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return -EINVAL;
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}
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@ -137,11 +140,10 @@ static int rc32434_wdt_release(struct inode *inode, struct file *file)
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{
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if (expect_close == 42) {
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rc32434_wdt_stop();
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printk(KERN_INFO KBUILD_MODNAME ": disabling watchdog timer\n");
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module_put(THIS_MODULE);
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} else {
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printk(KERN_CRIT KBUILD_MODNAME
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": device closed unexpectedly. WDT will not stop !\n");
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printk(KERN_CRIT PFX
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"device closed unexpectedly. WDT will not stop!\n");
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rc32434_wdt_ping();
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}
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clear_bit(0, &rc32434_wdt_device.inuse);
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@ -185,8 +187,9 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
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.identity = "RC32434_WDT Watchdog",
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};
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switch (cmd) {
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case WDIOC_KEEPALIVE:
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rc32434_wdt_ping();
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case WDIOC_GETSUPPORT:
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if (copy_to_user(argp, &ident, sizeof(ident)))
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return -EFAULT;
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break;
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case WDIOC_GETSTATUS:
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case WDIOC_GETBOOTSTATUS:
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@ -194,10 +197,6 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
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if (copy_to_user(argp, &value, sizeof(int)))
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return -EFAULT;
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break;
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case WDIOC_GETSUPPORT:
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if (copy_to_user(argp, &ident, sizeof(ident)))
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return -EFAULT;
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break;
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case WDIOC_SETOPTIONS:
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if (copy_from_user(&value, argp, sizeof(int)))
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return -EFAULT;
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@ -212,6 +211,9 @@ static long rc32434_wdt_ioctl(struct file *file, unsigned int cmd,
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return -EINVAL;
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}
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break;
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case WDIOC_KEEPALIVE:
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rc32434_wdt_ping();
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break;
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case WDIOC_SETTIMEOUT:
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if (copy_from_user(&new_timeout, argp, sizeof(int)))
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return -EFAULT;
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@ -242,8 +244,8 @@ static struct miscdevice rc32434_wdt_miscdev = {
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.fops = &rc32434_wdt_fops,
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};
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static char banner[] __devinitdata = KERN_INFO KBUILD_MODNAME
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": Watchdog Timer version " VERSION ", timer margin: %d sec\n";
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static char banner[] __devinitdata = KERN_INFO PFX
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"Watchdog Timer version " VERSION ", timer margin: %d sec\n";
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static int __devinit rc32434_wdt_probe(struct platform_device *pdev)
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{
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@ -252,22 +254,19 @@ static int __devinit rc32434_wdt_probe(struct platform_device *pdev)
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r = platform_get_resource_byname(pdev, IORESOURCE_MEM, "rb532_wdt_res");
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if (!r) {
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printk(KERN_ERR KBUILD_MODNAME
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"failed to retrieve resources\n");
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printk(KERN_ERR PFX "failed to retrieve resources\n");
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return -ENODEV;
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}
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wdt_reg = ioremap_nocache(r->start, r->end - r->start);
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if (!wdt_reg) {
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printk(KERN_ERR KBUILD_MODNAME
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"failed to remap I/O resources\n");
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printk(KERN_ERR PFX "failed to remap I/O resources\n");
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return -ENXIO;
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}
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ret = misc_register(&rc32434_wdt_miscdev);
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if (ret < 0) {
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printk(KERN_ERR KBUILD_MODNAME
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"failed to register watchdog device\n");
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printk(KERN_ERR PFX "failed to register watchdog device\n");
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goto unmap;
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}
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@ -287,7 +286,7 @@ static int __devexit rc32434_wdt_remove(struct platform_device *pdev)
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return 0;
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}
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static struct platform_driver rc32434_wdt = {
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static struct platform_driver rc32434_wdt_driver = {
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.probe = rc32434_wdt_probe,
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.remove = __devexit_p(rc32434_wdt_remove),
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.driver = {
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@ -297,12 +296,12 @@ static struct platform_driver rc32434_wdt = {
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static int __init rc32434_wdt_init(void)
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{
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return platform_driver_register(&rc32434_wdt);
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return platform_driver_register(&rc32434_wdt_driver);
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}
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static void __exit rc32434_wdt_exit(void)
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{
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platform_driver_unregister(&rc32434_wdt);
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platform_driver_unregister(&rc32434_wdt_driver);
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}
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module_init(rc32434_wdt_init);
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