1 files changed, 0 insertions, 378 deletions
diff --git a/target/linux/gemini/files-4.4/drivers/watchdog/gemini_wdt.c b/target/linux/gemini/files-4.4/drivers/watchdog/gemini_wdt.c
deleted file mode 100644
index 20d30b64eb..0000000000
--- a/target/linux/gemini/files-4.4/drivers/watchdog/gemini_wdt.c
+++ /dev/null
@@ -1,378 +0,0 @@
-/*
- *  Watchdog driver for Cortina Systems Gemini SoC
- *
- *  Copyright (C) 2009 Paulius Zaleckas <paulius.zaleckas@teltonika.lt>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <linux/fs.h>
-#include <linux/uaccess.h>
-#include <linux/miscdevice.h>
-#include <linux/platform_device.h>
-#include <linux/watchdog.h>
-#include <linux/slab.h>
-
-#define GEMINI_WDCOUNTER	0x0
-#define GEMINI_WDLOAD		0x4
-#define GEMINI_WDRESTART	0x8
-
-#define WDRESTART_MAGIC		0x5AB9
-
-#define GEMINI_WDCR		0xC
-
-#define WDCR_CLOCK_5MHZ		(1 << 4)
-#define WDCR_SYS_RST		(1 << 1)
-#define WDCR_ENABLE		(1 << 0)
-
-#define WDT_CLOCK		5000000		/* 5 MHz */
-#define WDT_DEFAULT_TIMEOUT	13
-#define WDT_MAX_TIMEOUT		(0xFFFFFFFF / WDT_CLOCK)
-
-/* status bits */
-#define WDT_ACTIVE		0
-#define WDT_OK_TO_CLOSE		1
-
-static unsigned int timeout = WDT_DEFAULT_TIMEOUT;
-static int nowayout = WATCHDOG_NOWAYOUT;
-
-static DEFINE_SPINLOCK(gemini_wdt_lock);
-
-static struct platform_device *gemini_wdt_dev;
-
-struct gemini_wdt_struct {
-	struct resource		*res;
-	struct device		*dev;
-	void __iomem		*base;
-	unsigned long		status;
-};
-
-static struct watchdog_info gemini_wdt_info = {
-	.identity	= "Gemini watchdog",
-	.options	= WDIOF_MAGICCLOSE | WDIOF_KEEPALIVEPING |
-			  WDIOF_SETTIMEOUT,
-};
-
-/* Disable the watchdog. */
-static void gemini_wdt_stop(struct gemini_wdt_struct *gemini_wdt)
-{
-	spin_lock(&gemini_wdt_lock);
-
-	__raw_writel(0, gemini_wdt->base + GEMINI_WDCR);
-
-	clear_bit(WDT_ACTIVE, &gemini_wdt->status);
-
-	spin_unlock(&gemini_wdt_lock);
-}
-
-/* Service the watchdog */
-static void gemini_wdt_service(struct gemini_wdt_struct *gemini_wdt)
-{
-	__raw_writel(WDRESTART_MAGIC, gemini_wdt->base + GEMINI_WDRESTART);
-}
-
-/* Enable and reset the watchdog. */
-static void gemini_wdt_start(struct gemini_wdt_struct *gemini_wdt)
-{
-	spin_lock(&gemini_wdt_lock);
-
-	__raw_writel(timeout * WDT_CLOCK, gemini_wdt->base + GEMINI_WDLOAD);
-
-	gemini_wdt_service(gemini_wdt);
-
-	/* set clock before enabling */
-	__raw_writel(WDCR_CLOCK_5MHZ | WDCR_SYS_RST,
-			gemini_wdt->base + GEMINI_WDCR);
-
-	__raw_writel(WDCR_CLOCK_5MHZ | WDCR_SYS_RST | WDCR_ENABLE,
-			gemini_wdt->base + GEMINI_WDCR);
-
-	set_bit(WDT_ACTIVE, &gemini_wdt->status);
-
-	spin_unlock(&gemini_wdt_lock);
-}
-
-/* Watchdog device is opened, and watchdog starts running. */
-static int gemini_wdt_open(struct inode *inode, struct file *file)
-{
-	struct gemini_wdt_struct *gemini_wdt = platform_get_drvdata(gemini_wdt_dev);
-
-	if (test_bit(WDT_ACTIVE, &gemini_wdt->status))
-		return -EBUSY;
-
-	file->private_data = gemini_wdt;
-
-	gemini_wdt_start(gemini_wdt);
-
-	return nonseekable_open(inode, file);
-}
-
-/* Close the watchdog device. */
-static int gemini_wdt_close(struct inode *inode, struct file *file)
-{
-	struct gemini_wdt_struct *gemini_wdt = file->private_data;
-
-	/* Disable the watchdog if possible */
-	if (test_bit(WDT_OK_TO_CLOSE, &gemini_wdt->status))
-		gemini_wdt_stop(gemini_wdt);
-	else
-		dev_warn(gemini_wdt->dev, "Device closed unexpectedly - timer will not stop\n");
-
-	return 0;
-}
-
-/* Handle commands from user-space. */
-static long gemini_wdt_ioctl(struct file *file, unsigned int cmd,
-			     unsigned long arg)
-{
-	struct gemini_wdt_struct *gemini_wdt = file->private_data;
-
-	int value;
-
-	switch (cmd) {
-	case WDIOC_KEEPALIVE:
-		gemini_wdt_service(gemini_wdt);
-		return 0;
-
-	case WDIOC_GETSUPPORT:
-		return copy_to_user((struct watchdog_info *)arg, &gemini_wdt_info,
-			sizeof(gemini_wdt_info)) ? -EFAULT : 0;
-
-	case WDIOC_SETTIMEOUT:
-		if (get_user(value, (int *)arg))
-			return -EFAULT;
-
-		if ((value < 1) || (value > WDT_MAX_TIMEOUT))
-			return -EINVAL;
-
-		timeout = value;
-
-		/* restart wdt to use new timeout */
-		gemini_wdt_stop(gemini_wdt);
-		gemini_wdt_start(gemini_wdt);
-
-		/* Fall through */
-	case WDIOC_GETTIMEOUT:
-		return put_user(timeout, (int *)arg);
-
-	case WDIOC_GETTIMELEFT:
-		value = __raw_readl(gemini_wdt->base + GEMINI_WDCOUNTER);
-		return put_user(value / WDT_CLOCK, (int *)arg);
-
-	default:
-		return -ENOTTY;
-	}
-}
-
-/* Refresh the watchdog whenever device is written to. */
-static ssize_t gemini_wdt_write(struct file *file, const char *data,
-						size_t len, loff_t *ppos)
-{
-	struct gemini_wdt_struct *gemini_wdt = file->private_data;
-
-	if (len) {
-		if (!nowayout) {
-			size_t i;
-
-			clear_bit(WDT_OK_TO_CLOSE, &gemini_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,
-						&gemini_wdt->status);
-			}
-		}
-		gemini_wdt_service(gemini_wdt);
-	}
-
-	return len;
-}
-
-static const struct file_operations gemini_wdt_fops = {
-	.owner		= THIS_MODULE,
-	.llseek		= no_llseek,
-	.unlocked_ioctl = gemini_wdt_ioctl,
-	.open		= gemini_wdt_open,
-	.release	= gemini_wdt_close,
-	.write		= gemini_wdt_write,
-};
-
-static struct miscdevice gemini_wdt_miscdev = {
-	.minor		= WATCHDOG_MINOR,
-	.name		= "watchdog",
-	.fops		= &gemini_wdt_fops,
-};
-
-static void gemini_wdt_shutdown(struct platform_device *pdev)
-{
-	struct gemini_wdt_struct *gemini_wdt = platform_get_drvdata(pdev);
-
-	gemini_wdt_stop(gemini_wdt);
-}
-
-static int gemini_wdt_probe(struct platform_device *pdev)
-{
-	int ret;
-	int res_size;
-	struct resource *res;
-	void __iomem *base;
-	struct gemini_wdt_struct *gemini_wdt;
-	unsigned int reg;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "can't get device resources\n");
-		return -ENODEV;
-	}
-
-	res_size = resource_size(res);
-	if (!request_mem_region(res->start, res_size, res->name)) {
-		dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n",
-			res_size, res->start);
-		return -ENOMEM;
-	}
-
-	base = ioremap(res->start, res_size);
-	if (!base) {
-		dev_err(&pdev->dev, "ioremap failed\n");
-		ret = -EIO;
-		goto fail0;
-	}
-
-	gemini_wdt = kzalloc(sizeof(struct gemini_wdt_struct), GFP_KERNEL);
-	if (!gemini_wdt) {
-		dev_err(&pdev->dev, "can't allocate interface\n");
-		ret = -ENOMEM;
-		goto fail1;
-	}
-
-	/* Setup gemini_wdt driver structure */
-	gemini_wdt->base = base;
-	gemini_wdt->res = res;
-
-	/* Set up platform driver data */
-	platform_set_drvdata(pdev, gemini_wdt);
-	gemini_wdt_dev = pdev;
-
-	if (gemini_wdt_miscdev.parent) {
-		ret = -EBUSY;
-		goto fail2;
-	}
-
-	gemini_wdt_miscdev.parent = &pdev->dev;
-
-	reg = __raw_readw(gemini_wdt->base + GEMINI_WDCR);
-	if (reg & WDCR_ENABLE) {
-		/* Watchdog was enabled by the bootloader, disable it. */
-		reg &= ~(WDCR_ENABLE);
-		__raw_writel(reg, gemini_wdt->base + GEMINI_WDCR);
-	}
-
-	ret = misc_register(&gemini_wdt_miscdev);
-	if (ret)
-		goto fail2;
-
-	return 0;
-
-fail2:
-	platform_set_drvdata(pdev, NULL);
-	kfree(gemini_wdt);
-fail1:
-	iounmap(base);
-fail0:
-	release_mem_region(res->start, res_size);
-
-	return ret;
-}
-
-static int gemini_wdt_remove(struct platform_device *pdev)
-{
-	struct gemini_wdt_struct *gemini_wdt = platform_get_drvdata(pdev);
-
-	platform_set_drvdata(pdev, NULL);
-	misc_deregister(&gemini_wdt_miscdev);
-	gemini_wdt_dev = NULL;
-	iounmap(gemini_wdt->base);
-	release_mem_region(gemini_wdt->res->start, resource_size(gemini_wdt->res));
-
-	kfree(gemini_wdt);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM
-static int gemini_wdt_suspend(struct platform_device *pdev, pm_message_t message)
-{
-	struct gemini_wdt_struct *gemini_wdt = platform_get_drvdata(pdev);
-	unsigned int reg;
-
-	reg = __raw_readw(gemini_wdt->base + GEMINI_WDCR);
-	reg &= ~(WDCR_WDENABLE);
-	__raw_writel(reg, gemini_wdt->base + GEMINI_WDCR);
-
-	return 0;
-}
-
-static int gemini_wdt_resume(struct platform_device *pdev)
-{
-	struct gemini_wdt_struct *gemini_wdt = platform_get_drvdata(pdev);
-	unsigned int reg;
-
-	if (gemini_wdt->status) {
-		reg = __raw_readw(gemini_wdt->base + GEMINI_WDCR);
-		reg |= WDCR_WDENABLE;
-		__raw_writel(reg, gemini_wdt->base + GEMINI_WDCR);
-	}
-
-	return 0;
-}
-#else
-#define gemini_wdt_suspend	NULL
-#define gemini_wdt_resume	NULL
-#endif
-
-static struct platform_driver gemini_wdt_driver = {
-	.probe		= gemini_wdt_probe,
-	.remove		= gemini_wdt_remove,
-	.shutdown	= gemini_wdt_shutdown,
-	.suspend	= gemini_wdt_suspend,
-	.resume		= gemini_wdt_resume,
-	.driver		= {
-		.name	= "gemini-wdt",
-		.owner	= THIS_MODULE,
-	},
-};
-
-static int __init gemini_wdt_init(void)
-{
-	return platform_driver_probe(&gemini_wdt_driver, gemini_wdt_probe);
-}
-
-static void __exit gemini_wdt_exit(void)
-{
-	platform_driver_unregister(&gemini_wdt_driver);
-}
-
-module_init(gemini_wdt_init);
-module_exit(gemini_wdt_exit);
-
-module_param(timeout, uint, 0);
-MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds");
-
-module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
-
-MODULE_AUTHOR("Paulius Zaleckas");
-MODULE_DESCRIPTION("Watchdog driver for Gemini");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-MODULE_ALIAS("platform:gemini-wdt");