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Komal Shah7768a132006-09-29 01:59:18 -07001/*
Felipe Balbi28171422008-09-20 04:14:01 +03002 * omap_wdt.c
Komal Shah7768a132006-09-29 01:59:18 -07003 *
Felipe Balbi28171422008-09-20 04:14:01 +03004 * Watchdog driver for the TI OMAP 16xx & 24xx/34xx 32KHz (non-secure) watchdog
Komal Shah7768a132006-09-29 01:59:18 -07005 *
6 * Author: MontaVista Software, Inc.
7 * <gdavis@mvista.com> or <source@mvista.com>
8 *
9 * 2003 (c) MontaVista Software, Inc. This file is licensed under the
10 * terms of the GNU General Public License version 2. This program is
11 * licensed "as is" without any warranty of any kind, whether express
12 * or implied.
13 *
14 * History:
15 *
16 * 20030527: George G. Davis <gdavis@mvista.com>
17 * Initially based on linux-2.4.19-rmk7-pxa1/drivers/char/sa1100_wdt.c
18 * (c) Copyright 2000 Oleg Drokin <green@crimea.edu>
Alan Cox29fa0582008-10-27 15:17:56 +000019 * Based on SoftDog driver by Alan Cox <alan@lxorguk.ukuu.org.uk>
Komal Shah7768a132006-09-29 01:59:18 -070020 *
21 * Copyright (c) 2004 Texas Instruments.
22 * 1. Modified to support OMAP1610 32-KHz watchdog timer
23 * 2. Ported to 2.6 kernel
24 *
25 * Copyright (c) 2005 David Brownell
26 * Use the driver model and standard identifiers; handle bigger timeouts.
27 */
28
Joe Perches27c766a2012-02-15 15:06:19 -080029#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30
Komal Shah7768a132006-09-29 01:59:18 -070031#include <linux/module.h>
Komal Shah7768a132006-09-29 01:59:18 -070032#include <linux/types.h>
33#include <linux/kernel.h>
Komal Shah7768a132006-09-29 01:59:18 -070034#include <linux/mm.h>
Komal Shah7768a132006-09-29 01:59:18 -070035#include <linux/watchdog.h>
36#include <linux/reboot.h>
Komal Shah7768a132006-09-29 01:59:18 -070037#include <linux/err.h>
38#include <linux/platform_device.h>
39#include <linux/moduleparam.h>
Wim Van Sebroeck089ab072008-07-15 11:46:11 +000040#include <linux/io.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +090041#include <linux/slab.h>
Varadarajan, Charulatha7ec5ad02010-09-23 20:02:43 +053042#include <linux/pm_runtime.h>
Paul Walmsley129f5572012-10-29 20:49:44 -060043#include <linux/platform_data/omap-wd-timer.h>
Komal Shah7768a132006-09-29 01:59:18 -070044
45#include "omap_wdt.h"
46
Pali Rohár2dd7b242013-02-17 00:49:26 +010047static bool nowayout = WATCHDOG_NOWAYOUT;
48module_param(nowayout, bool, 0);
49MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started "
50 "(default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
51
Komal Shah7768a132006-09-29 01:59:18 -070052static unsigned timer_margin;
53module_param(timer_margin, uint, 0);
54MODULE_PARM_DESC(timer_margin, "initial watchdog timeout (in seconds)");
55
Felipe Balbi28171422008-09-20 04:14:01 +030056struct omap_wdt_dev {
57 void __iomem *base; /* physical */
58 struct device *dev;
Aaro Koskinen67c0f552012-10-10 23:23:32 +030059 bool omap_wdt_users;
Aaro Koskinen67c0f552012-10-10 23:23:32 +030060 int wdt_trgr_pattern;
61 struct mutex lock; /* to avoid races with PM */
Felipe Balbi28171422008-09-20 04:14:01 +030062};
63
Aaro Koskinen67c0f552012-10-10 23:23:32 +030064static void omap_wdt_reload(struct omap_wdt_dev *wdev)
Komal Shah7768a132006-09-29 01:59:18 -070065{
Felipe Balbi28171422008-09-20 04:14:01 +030066 void __iomem *base = wdev->base;
Felipe Balbib3112182008-09-20 04:14:03 +030067
Komal Shah7768a132006-09-29 01:59:18 -070068 /* wait for posted write to complete */
Victor Kamensky4a7e94a2013-11-16 02:01:05 +020069 while ((readl_relaxed(base + OMAP_WATCHDOG_WPS)) & 0x08)
Komal Shah7768a132006-09-29 01:59:18 -070070 cpu_relax();
Felipe Balbib3112182008-09-20 04:14:03 +030071
Aaro Koskinen67c0f552012-10-10 23:23:32 +030072 wdev->wdt_trgr_pattern = ~wdev->wdt_trgr_pattern;
Victor Kamensky4a7e94a2013-11-16 02:01:05 +020073 writel_relaxed(wdev->wdt_trgr_pattern, (base + OMAP_WATCHDOG_TGR));
Felipe Balbib3112182008-09-20 04:14:03 +030074
Komal Shah7768a132006-09-29 01:59:18 -070075 /* wait for posted write to complete */
Victor Kamensky4a7e94a2013-11-16 02:01:05 +020076 while ((readl_relaxed(base + OMAP_WATCHDOG_WPS)) & 0x08)
Komal Shah7768a132006-09-29 01:59:18 -070077 cpu_relax();
78 /* reloaded WCRR from WLDR */
79}
80
Felipe Balbi28171422008-09-20 04:14:01 +030081static void omap_wdt_enable(struct omap_wdt_dev *wdev)
Komal Shah7768a132006-09-29 01:59:18 -070082{
Felipe Balbib3112182008-09-20 04:14:03 +030083 void __iomem *base = wdev->base;
84
Komal Shah7768a132006-09-29 01:59:18 -070085 /* Sequence to enable the watchdog */
Victor Kamensky4a7e94a2013-11-16 02:01:05 +020086 writel_relaxed(0xBBBB, base + OMAP_WATCHDOG_SPR);
87 while ((readl_relaxed(base + OMAP_WATCHDOG_WPS)) & 0x10)
Komal Shah7768a132006-09-29 01:59:18 -070088 cpu_relax();
Felipe Balbib3112182008-09-20 04:14:03 +030089
Victor Kamensky4a7e94a2013-11-16 02:01:05 +020090 writel_relaxed(0x4444, base + OMAP_WATCHDOG_SPR);
91 while ((readl_relaxed(base + OMAP_WATCHDOG_WPS)) & 0x10)
Komal Shah7768a132006-09-29 01:59:18 -070092 cpu_relax();
93}
94
Felipe Balbi28171422008-09-20 04:14:01 +030095static void omap_wdt_disable(struct omap_wdt_dev *wdev)
Komal Shah7768a132006-09-29 01:59:18 -070096{
Felipe Balbib3112182008-09-20 04:14:03 +030097 void __iomem *base = wdev->base;
98
Komal Shah7768a132006-09-29 01:59:18 -070099 /* sequence required to disable watchdog */
Victor Kamensky4a7e94a2013-11-16 02:01:05 +0200100 writel_relaxed(0xAAAA, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */
101 while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x10)
Komal Shah7768a132006-09-29 01:59:18 -0700102 cpu_relax();
Felipe Balbib3112182008-09-20 04:14:03 +0300103
Victor Kamensky4a7e94a2013-11-16 02:01:05 +0200104 writel_relaxed(0x5555, base + OMAP_WATCHDOG_SPR); /* TIMER_MODE */
105 while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x10)
Komal Shah7768a132006-09-29 01:59:18 -0700106 cpu_relax();
107}
108
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300109static void omap_wdt_set_timer(struct omap_wdt_dev *wdev,
110 unsigned int timeout)
Komal Shah7768a132006-09-29 01:59:18 -0700111{
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300112 u32 pre_margin = GET_WLDR_VAL(timeout);
Felipe Balbib3112182008-09-20 04:14:03 +0300113 void __iomem *base = wdev->base;
Komal Shah7768a132006-09-29 01:59:18 -0700114
115 /* just count up at 32 KHz */
Victor Kamensky4a7e94a2013-11-16 02:01:05 +0200116 while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x04)
Komal Shah7768a132006-09-29 01:59:18 -0700117 cpu_relax();
Felipe Balbib3112182008-09-20 04:14:03 +0300118
Victor Kamensky4a7e94a2013-11-16 02:01:05 +0200119 writel_relaxed(pre_margin, base + OMAP_WATCHDOG_LDR);
120 while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x04)
Komal Shah7768a132006-09-29 01:59:18 -0700121 cpu_relax();
122}
123
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300124static int omap_wdt_start(struct watchdog_device *wdog)
Komal Shah7768a132006-09-29 01:59:18 -0700125{
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300126 struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
Felipe Balbib3112182008-09-20 04:14:03 +0300127 void __iomem *base = wdev->base;
128
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300129 mutex_lock(&wdev->lock);
130
131 wdev->omap_wdt_users = true;
Komal Shah7768a132006-09-29 01:59:18 -0700132
Varadarajan, Charulatha7ec5ad02010-09-23 20:02:43 +0530133 pm_runtime_get_sync(wdev->dev);
Komal Shah7768a132006-09-29 01:59:18 -0700134
135 /* initialize prescaler */
Victor Kamensky4a7e94a2013-11-16 02:01:05 +0200136 while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x01)
Komal Shah7768a132006-09-29 01:59:18 -0700137 cpu_relax();
Felipe Balbib3112182008-09-20 04:14:03 +0300138
Victor Kamensky4a7e94a2013-11-16 02:01:05 +0200139 writel_relaxed((1 << 5) | (PTV << 2), base + OMAP_WATCHDOG_CNTRL);
140 while (readl_relaxed(base + OMAP_WATCHDOG_WPS) & 0x01)
Komal Shah7768a132006-09-29 01:59:18 -0700141 cpu_relax();
142
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300143 omap_wdt_set_timer(wdev, wdog->timeout);
144 omap_wdt_reload(wdev); /* trigger loading of new timeout value */
Felipe Balbi28171422008-09-20 04:14:01 +0300145 omap_wdt_enable(wdev);
Felipe Balbib3112182008-09-20 04:14:03 +0300146
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300147 mutex_unlock(&wdev->lock);
Felipe Balbib3112182008-09-20 04:14:03 +0300148
Komal Shah7768a132006-09-29 01:59:18 -0700149 return 0;
150}
151
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300152static int omap_wdt_stop(struct watchdog_device *wdog)
Komal Shah7768a132006-09-29 01:59:18 -0700153{
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300154 struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
Felipe Balbib3112182008-09-20 04:14:03 +0300155
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300156 mutex_lock(&wdev->lock);
157 omap_wdt_disable(wdev);
158 pm_runtime_put_sync(wdev->dev);
159 wdev->omap_wdt_users = false;
160 mutex_unlock(&wdev->lock);
161 return 0;
Komal Shah7768a132006-09-29 01:59:18 -0700162}
163
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300164static int omap_wdt_ping(struct watchdog_device *wdog)
Komal Shah7768a132006-09-29 01:59:18 -0700165{
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300166 struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
Felipe Balbib3112182008-09-20 04:14:03 +0300167
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300168 mutex_lock(&wdev->lock);
169 omap_wdt_reload(wdev);
170 mutex_unlock(&wdev->lock);
Komal Shah7768a132006-09-29 01:59:18 -0700171
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300172 return 0;
Komal Shah7768a132006-09-29 01:59:18 -0700173}
174
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300175static int omap_wdt_set_timeout(struct watchdog_device *wdog,
176 unsigned int timeout)
177{
178 struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
179
180 mutex_lock(&wdev->lock);
181 omap_wdt_disable(wdev);
182 omap_wdt_set_timer(wdev, timeout);
183 omap_wdt_enable(wdev);
184 omap_wdt_reload(wdev);
185 wdog->timeout = timeout;
186 mutex_unlock(&wdev->lock);
187
188 return 0;
189}
190
191static const struct watchdog_info omap_wdt_info = {
192 .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
193 .identity = "OMAP Watchdog",
194};
195
196static const struct watchdog_ops omap_wdt_ops = {
197 .owner = THIS_MODULE,
198 .start = omap_wdt_start,
199 .stop = omap_wdt_stop,
200 .ping = omap_wdt_ping,
201 .set_timeout = omap_wdt_set_timeout,
Komal Shah7768a132006-09-29 01:59:18 -0700202};
203
Bill Pemberton2d991a12012-11-19 13:21:41 -0500204static int omap_wdt_probe(struct platform_device *pdev)
Komal Shah7768a132006-09-29 01:59:18 -0700205{
Jingoo Hanbc8fdfb2013-07-30 19:58:51 +0900206 struct omap_wd_timer_platform_data *pdata = dev_get_platdata(&pdev->dev);
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300207 struct watchdog_device *omap_wdt;
Jingoo Han6e272062014-02-11 21:44:12 +0900208 struct resource *res;
Felipe Balbi28171422008-09-20 04:14:01 +0300209 struct omap_wdt_dev *wdev;
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300210 u32 rs;
Felipe Balbib3112182008-09-20 04:14:03 +0300211 int ret;
Komal Shah7768a132006-09-29 01:59:18 -0700212
Aaro Koskinen4f4753d2012-10-10 23:23:33 +0300213 omap_wdt = devm_kzalloc(&pdev->dev, sizeof(*omap_wdt), GFP_KERNEL);
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300214 if (!omap_wdt)
215 return -ENOMEM;
216
Aaro Koskinen4f4753d2012-10-10 23:23:33 +0300217 wdev = devm_kzalloc(&pdev->dev, sizeof(*wdev), GFP_KERNEL);
218 if (!wdev)
219 return -ENOMEM;
Felipe Balbib3112182008-09-20 04:14:03 +0300220
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300221 wdev->omap_wdt_users = false;
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300222 wdev->dev = &pdev->dev;
223 wdev->wdt_trgr_pattern = 0x1234;
224 mutex_init(&wdev->lock);
Komal Shah7768a132006-09-29 01:59:18 -0700225
Jingoo Han6e272062014-02-11 21:44:12 +0900226 /* reserve static register mappings */
227 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
228 wdev->base = devm_ioremap_resource(&pdev->dev, res);
229 if (IS_ERR(wdev->base))
230 return PTR_ERR(wdev->base);
Felipe Balbi9f69e3b2008-09-20 04:14:02 +0300231
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300232 omap_wdt->info = &omap_wdt_info;
233 omap_wdt->ops = &omap_wdt_ops;
234 omap_wdt->min_timeout = TIMER_MARGIN_MIN;
235 omap_wdt->max_timeout = TIMER_MARGIN_MAX;
236
237 if (timer_margin >= TIMER_MARGIN_MIN &&
238 timer_margin <= TIMER_MARGIN_MAX)
239 omap_wdt->timeout = timer_margin;
240 else
241 omap_wdt->timeout = TIMER_MARGIN_DEFAULT;
242
243 watchdog_set_drvdata(omap_wdt, wdev);
244 watchdog_set_nowayout(omap_wdt, nowayout);
245
246 platform_set_drvdata(pdev, omap_wdt);
Felipe Balbi28171422008-09-20 04:14:01 +0300247
Varadarajan, Charulatha7ec5ad02010-09-23 20:02:43 +0530248 pm_runtime_enable(wdev->dev);
249 pm_runtime_get_sync(wdev->dev);
Ulrik Bech Hald789cd472009-06-12 16:18:32 -0500250
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300251 if (pdata && pdata->read_reset_sources)
252 rs = pdata->read_reset_sources();
253 else
254 rs = 0;
255 omap_wdt->bootstatus = (rs & (1 << OMAP_MPU_WD_RST_SRC_ID_SHIFT)) ?
256 WDIOF_CARDRESET : 0;
257
Felipe Balbi28171422008-09-20 04:14:01 +0300258 omap_wdt_disable(wdev);
Komal Shah7768a132006-09-29 01:59:18 -0700259
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300260 ret = watchdog_register_device(omap_wdt);
Aaro Koskinen1ba85382012-10-10 23:23:37 +0300261 if (ret) {
262 pm_runtime_disable(wdev->dev);
263 return ret;
264 }
Komal Shah7768a132006-09-29 01:59:18 -0700265
Felipe Balbi28171422008-09-20 04:14:01 +0300266 pr_info("OMAP Watchdog Timer Rev 0x%02x: initial timeout %d sec\n",
Victor Kamensky4a7e94a2013-11-16 02:01:05 +0200267 readl_relaxed(wdev->base + OMAP_WATCHDOG_REV) & 0xFF,
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300268 omap_wdt->timeout);
Komal Shah7768a132006-09-29 01:59:18 -0700269
Varadarajan, Charulatha7ec5ad02010-09-23 20:02:43 +0530270 pm_runtime_put_sync(wdev->dev);
Ulrik Bech Hald789cd472009-06-12 16:18:32 -0500271
Komal Shah7768a132006-09-29 01:59:18 -0700272 return 0;
Komal Shah7768a132006-09-29 01:59:18 -0700273}
274
275static void omap_wdt_shutdown(struct platform_device *pdev)
276{
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300277 struct watchdog_device *wdog = platform_get_drvdata(pdev);
278 struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
Felipe Balbi28171422008-09-20 04:14:01 +0300279
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300280 mutex_lock(&wdev->lock);
Paul Walmsley0503add2011-03-10 22:40:05 -0700281 if (wdev->omap_wdt_users) {
Felipe Balbi28171422008-09-20 04:14:01 +0300282 omap_wdt_disable(wdev);
Paul Walmsley0503add2011-03-10 22:40:05 -0700283 pm_runtime_put_sync(wdev->dev);
284 }
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300285 mutex_unlock(&wdev->lock);
Komal Shah7768a132006-09-29 01:59:18 -0700286}
287
Bill Pemberton4b12b892012-11-19 13:26:24 -0500288static int omap_wdt_remove(struct platform_device *pdev)
Komal Shah7768a132006-09-29 01:59:18 -0700289{
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300290 struct watchdog_device *wdog = platform_get_drvdata(pdev);
291 struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
Felipe Balbi28171422008-09-20 04:14:01 +0300292
Shubhrajyoti D12c583d2012-01-11 19:50:18 +0530293 pm_runtime_disable(wdev->dev);
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300294 watchdog_unregister_device(wdog);
Felipe Balbib3112182008-09-20 04:14:03 +0300295
Komal Shah7768a132006-09-29 01:59:18 -0700296 return 0;
297}
298
299#ifdef CONFIG_PM
300
301/* REVISIT ... not clear this is the best way to handle system suspend; and
302 * it's very inappropriate for selective device suspend (e.g. suspending this
303 * through sysfs rather than by stopping the watchdog daemon). Also, this
304 * may not play well enough with NOWAYOUT...
305 */
306
307static int omap_wdt_suspend(struct platform_device *pdev, pm_message_t state)
308{
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300309 struct watchdog_device *wdog = platform_get_drvdata(pdev);
310 struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
Felipe Balbib3112182008-09-20 04:14:03 +0300311
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300312 mutex_lock(&wdev->lock);
Paul Walmsley0503add2011-03-10 22:40:05 -0700313 if (wdev->omap_wdt_users) {
Felipe Balbi28171422008-09-20 04:14:01 +0300314 omap_wdt_disable(wdev);
Paul Walmsley0503add2011-03-10 22:40:05 -0700315 pm_runtime_put_sync(wdev->dev);
316 }
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300317 mutex_unlock(&wdev->lock);
Felipe Balbib3112182008-09-20 04:14:03 +0300318
Komal Shah7768a132006-09-29 01:59:18 -0700319 return 0;
320}
321
322static int omap_wdt_resume(struct platform_device *pdev)
323{
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300324 struct watchdog_device *wdog = platform_get_drvdata(pdev);
325 struct omap_wdt_dev *wdev = watchdog_get_drvdata(wdog);
Felipe Balbib3112182008-09-20 04:14:03 +0300326
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300327 mutex_lock(&wdev->lock);
Felipe Balbi28171422008-09-20 04:14:01 +0300328 if (wdev->omap_wdt_users) {
Paul Walmsley0503add2011-03-10 22:40:05 -0700329 pm_runtime_get_sync(wdev->dev);
Felipe Balbi28171422008-09-20 04:14:01 +0300330 omap_wdt_enable(wdev);
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300331 omap_wdt_reload(wdev);
Komal Shah7768a132006-09-29 01:59:18 -0700332 }
Aaro Koskinen67c0f552012-10-10 23:23:32 +0300333 mutex_unlock(&wdev->lock);
Felipe Balbib3112182008-09-20 04:14:03 +0300334
Komal Shah7768a132006-09-29 01:59:18 -0700335 return 0;
336}
337
338#else
339#define omap_wdt_suspend NULL
340#define omap_wdt_resume NULL
341#endif
342
Xiao Jiange6ca04e2012-06-01 12:44:16 +0800343static const struct of_device_id omap_wdt_of_match[] = {
344 { .compatible = "ti,omap3-wdt", },
345 {},
346};
347MODULE_DEVICE_TABLE(of, omap_wdt_of_match);
348
Komal Shah7768a132006-09-29 01:59:18 -0700349static struct platform_driver omap_wdt_driver = {
350 .probe = omap_wdt_probe,
Bill Pemberton82268712012-11-19 13:21:12 -0500351 .remove = omap_wdt_remove,
Komal Shah7768a132006-09-29 01:59:18 -0700352 .shutdown = omap_wdt_shutdown,
353 .suspend = omap_wdt_suspend,
354 .resume = omap_wdt_resume,
355 .driver = {
356 .owner = THIS_MODULE,
357 .name = "omap_wdt",
Xiao Jiange6ca04e2012-06-01 12:44:16 +0800358 .of_match_table = omap_wdt_of_match,
Komal Shah7768a132006-09-29 01:59:18 -0700359 },
360};
361
Axel Linb8ec6112011-11-29 13:56:27 +0800362module_platform_driver(omap_wdt_driver);
Komal Shah7768a132006-09-29 01:59:18 -0700363
364MODULE_AUTHOR("George G. Davis");
365MODULE_LICENSE("GPL");
Kay Sieversf37d1932008-04-10 21:29:23 -0700366MODULE_ALIAS("platform:omap_wdt");