[lantiq]

* backport 2.6.8 patches to .39 / .32.33
* remove lqtapi
* bump tapi/dsl to .39
* migrate to new ltq_ style api
* add amazon_se support

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27026 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 310 insertions, 0 deletions

diff --git a/target/linux/lantiq/patches-2.6.32/0013-MIPS-Lantiq-Add-watchdog-support.patch b/target/linux/lantiq/patches-2.6.32/0013-MIPS-Lantiq-Add-watchdog-support.patch
new file mode 100644
index 000000000..903f67468
--- /dev/null
+++ b/target/linux/lantiq/patches-2.6.32/0013-MIPS-Lantiq-Add-watchdog-support.patch
@@ -0,0 +1,310 @@
+From 3466449c8f455da0cb646231602e6af16190f592 Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 5 May 2011 23:00:23 +0200
+Subject: [PATCH 13/13] MIPS: Lantiq: Add watchdog support
+
+This patch adds the driver for the watchdog found inside the Lantiq SoC family.
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+Signed-off-by: Ralph Hempel <ralph.hempel@lantiq.com>
+Cc: Wim Van Sebroeck <wim@iguana.be>
+Cc: linux-mips@linux-mips.org
+Cc: linux-watchdog@vger.kernel.org
+Patchwork: https://patchwork.linux-mips.org/patch/2327/
+Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
+---
+ drivers/watchdog/Kconfig      |    6 +
+ drivers/watchdog/Makefile     |    1 +
+ drivers/watchdog/lantiq_wdt.c |  261 +++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 268 insertions(+), 0 deletions(-)
+ create mode 100644 drivers/watchdog/lantiq_wdt.c
+
+--- a/drivers/watchdog/Kconfig
++++ b/drivers/watchdog/Kconfig
+@@ -850,6 +850,12 @@
+ 	help
+ 	  Hardware driver for the built-in watchdog timer on TXx9 MIPS SoCs.
+ 
++config LANTIQ_WDT
++	tristate "Lantiq SoC watchdog"
++	depends on LANTIQ
++	help
++	  Hardware driver for the Lantiq SoC Watchdog Timer.
++
+ # PARISC Architecture
+ 
+ # POWERPC Architecture
+--- a/drivers/watchdog/Makefile
++++ b/drivers/watchdog/Makefile
+@@ -113,6 +113,7 @@
+ obj-$(CONFIG_SIBYTE_WDOG) += sb_wdog.o
+ obj-$(CONFIG_AR7_WDT) += ar7_wdt.o
+ obj-$(CONFIG_TXX9_WDT) += txx9wdt.o
++obj-$(CONFIG_LANTIQ_WDT) += lantiq_wdt.o
+ 
+ # PARISC Architecture
+ 
+--- /dev/null
++++ b/drivers/watchdog/lantiq_wdt.c
+@@ -0,0 +1,261 @@
++/*
++ *  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.
++ *
++ *  Copyright (C) 2010 John Crispin <blogic@openwrt.org>
++ *  Based on EP93xx wdt driver
++ */
++
++#include <linux/module.h>
++#include <linux/fs.h>
++#include <linux/miscdevice.h>
++#include <linux/watchdog.h>
++#include <linux/platform_device.h>
++#include <linux/uaccess.h>
++#include <linux/clk.h>
++#include <linux/io.h>
++
++#include <lantiq.h>
++
++/* Section 3.4 of the datasheet
++ * The password sequence protects the WDT control register from unintended
++ * write actions, which might cause malfunction of the WDT.
++ *
++ * essentially the following two magic passwords need to be written to allow
++ * IO access to the WDT core
++ */
++#define LTQ_WDT_PW1		0x00BE0000
++#define LTQ_WDT_PW2		0x00DC0000
++
++#define LTQ_WDT_CR		0x0	/* watchdog control register */
++#define LTQ_WDT_SR		0x8	/* watchdog status register */
++
++#define LTQ_WDT_SR_EN		(0x1 << 31)	/* enable bit */
++#define LTQ_WDT_SR_PWD		(0x3 << 26)	/* turn on power */
++#define LTQ_WDT_SR_CLKDIV	(0x3 << 24)	/* turn on clock and set */
++						/* divider to 0x40000 */
++#define LTQ_WDT_DIVIDER		0x40000
++#define LTQ_MAX_TIMEOUT		((1 << 16) - 1)	/* the reload field is 16 bit */
++
++static int nowayout = WATCHDOG_NOWAYOUT;
++
++static void __iomem *ltq_wdt_membase;
++static unsigned long ltq_io_region_clk_rate;
++
++static unsigned long ltq_wdt_bootstatus;
++static unsigned long ltq_wdt_in_use;
++static int ltq_wdt_timeout = 30;
++static int ltq_wdt_ok_to_close;
++
++static void
++ltq_wdt_enable(void)
++{
++	ltq_wdt_timeout = ltq_wdt_timeout *
++			(ltq_io_region_clk_rate / LTQ_WDT_DIVIDER) + 0x1000;
++	if (ltq_wdt_timeout > LTQ_MAX_TIMEOUT)
++		ltq_wdt_timeout = LTQ_MAX_TIMEOUT;
++
++	/* write the first password magic */
++	ltq_w32(LTQ_WDT_PW1, ltq_wdt_membase + LTQ_WDT_CR);
++	/* write the second magic plus the configuration and new timeout */
++	ltq_w32(LTQ_WDT_SR_EN | LTQ_WDT_SR_PWD | LTQ_WDT_SR_CLKDIV |
++		LTQ_WDT_PW2 | ltq_wdt_timeout, ltq_wdt_membase + LTQ_WDT_CR);
++}
++
++static void
++ltq_wdt_disable(void)
++{
++	/* write the first password magic */
++	ltq_w32(LTQ_WDT_PW1, ltq_wdt_membase + LTQ_WDT_CR);
++	/* write the second password magic with no config
++	 * this turns the watchdog off
++	 */
++	ltq_w32(LTQ_WDT_PW2, ltq_wdt_membase + LTQ_WDT_CR);
++}
++
++static ssize_t
++ltq_wdt_write(struct file *file, const char __user *data,
++		size_t len, loff_t *ppos)
++{
++	if (len) {
++		if (!nowayout) {
++			size_t i;
++
++			ltq_wdt_ok_to_close = 0;
++			for (i = 0; i != len; i++) {
++				char c;
++
++				if (get_user(c, data + i))
++					return -EFAULT;
++				if (c == 'V')
++					ltq_wdt_ok_to_close = 1;
++				else
++					ltq_wdt_ok_to_close = 0;
++			}
++		}
++		ltq_wdt_enable();
++	}
++
++	return len;
++}
++
++static struct watchdog_info ident = {
++	.options = WDIOF_MAGICCLOSE | WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING |
++			WDIOF_CARDRESET,
++	.identity = "ltq_wdt",
++};
++
++static long
++ltq_wdt_ioctl(struct file *file,
++		unsigned int cmd, unsigned long arg)
++{
++	int ret = -ENOTTY;
++
++	switch (cmd) {
++	case WDIOC_GETSUPPORT:
++		ret = copy_to_user((struct watchdog_info __user *)arg, &ident,
++				sizeof(ident)) ? -EFAULT : 0;
++		break;
++
++	case WDIOC_GETBOOTSTATUS:
++		ret = put_user(ltq_wdt_bootstatus, (int __user *)arg);
++		break;
++
++	case WDIOC_GETSTATUS:
++		ret = put_user(0, (int __user *)arg);
++		break;
++
++	case WDIOC_SETTIMEOUT:
++		ret = get_user(ltq_wdt_timeout, (int __user *)arg);
++		if (!ret)
++			ltq_wdt_enable();
++		/* intentional drop through */
++	case WDIOC_GETTIMEOUT:
++		ret = put_user(ltq_wdt_timeout, (int __user *)arg);
++		break;
++
++	case WDIOC_KEEPALIVE:
++		ltq_wdt_enable();
++		ret = 0;
++		break;
++	}
++	return ret;
++}
++
++static int
++ltq_wdt_open(struct inode *inode, struct file *file)
++{
++	if (test_and_set_bit(0, &ltq_wdt_in_use))
++		return -EBUSY;
++	ltq_wdt_in_use = 1;
++	ltq_wdt_enable();
++
++	return nonseekable_open(inode, file);
++}
++
++static int
++ltq_wdt_release(struct inode *inode, struct file *file)
++{
++	if (ltq_wdt_ok_to_close)
++		ltq_wdt_disable();
++	else
++		pr_err("ltq_wdt: watchdog closed without warning\n");
++	ltq_wdt_ok_to_close = 0;
++	clear_bit(0, &ltq_wdt_in_use);
++
++	return 0;
++}
++
++static const struct file_operations ltq_wdt_fops = {
++	.owner		= THIS_MODULE,
++	.write		= ltq_wdt_write,
++	.unlocked_ioctl	= ltq_wdt_ioctl,
++	.open		= ltq_wdt_open,
++	.release	= ltq_wdt_release,
++	.llseek		= no_llseek,
++};
++
++static struct miscdevice ltq_wdt_miscdev = {
++	.minor	= WATCHDOG_MINOR,
++	.name	= "watchdog",
++	.fops	= &ltq_wdt_fops,
++};
++
++static int __init
++ltq_wdt_probe(struct platform_device *pdev)
++{
++	struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++	struct clk *clk;
++
++	if (!res) {
++		dev_err(&pdev->dev, "cannot obtain I/O memory region");
++		return -ENOENT;
++	}
++	res = devm_request_mem_region(&pdev->dev, res->start,
++		resource_size(res), dev_name(&pdev->dev));
++	if (!res) {
++		dev_err(&pdev->dev, "cannot request I/O memory region");
++		return -EBUSY;
++	}
++	ltq_wdt_membase = devm_ioremap_nocache(&pdev->dev, res->start,
++		resource_size(res));
++	if (!ltq_wdt_membase) {
++		dev_err(&pdev->dev, "cannot remap I/O memory region\n");
++		return -ENOMEM;
++	}
++
++	/* we do not need to enable the clock as it is always running */
++	clk = clk_get(&pdev->dev, "io");
++	WARN_ON(!clk);
++	ltq_io_region_clk_rate = clk_get_rate(clk);
++	clk_put(clk);
++
++	if (ltq_reset_cause() == LTQ_RST_CAUSE_WDTRST)
++		ltq_wdt_bootstatus = WDIOF_CARDRESET;
++
++	return misc_register(&ltq_wdt_miscdev);
++}
++
++static int __devexit
++ltq_wdt_remove(struct platform_device *pdev)
++{
++	misc_deregister(&ltq_wdt_miscdev);
++
++	if (ltq_wdt_membase)
++		iounmap(ltq_wdt_membase);
++
++	return 0;
++}
++
++
++static struct platform_driver ltq_wdt_driver = {
++	.remove = __devexit_p(ltq_wdt_remove),
++	.driver = {
++		.name = "ltq_wdt",
++		.owner = THIS_MODULE,
++	},
++};
++
++static int __init
++init_ltq_wdt(void)
++{
++	return platform_driver_probe(&ltq_wdt_driver, ltq_wdt_probe);
++}
++
++static void __exit
++exit_ltq_wdt(void)
++{
++	return platform_driver_unregister(&ltq_wdt_driver);
++}
++
++module_init(init_ltq_wdt);
++module_exit(exit_ltq_wdt);
++
++module_param(nowayout, int, 0);
++MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started");
++
++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
++MODULE_DESCRIPTION("Lantiq SoC Watchdog");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);