Commit | Line | Data |
---|---|---|
cd6100fc | 1 | // SPDX-License-Identifier: GPL-2.0 |
bb2fd8a8 WS |
2 | /* |
3 | * Watchdog driver for IMX2 and later processors | |
4 | * | |
5 | * Copyright (C) 2010 Wolfram Sang, Pengutronix e.K. <w.sang@pengutronix.de> | |
1a9c5efa | 6 | * Copyright (C) 2014 Freescale Semiconductor, Inc. |
bb2fd8a8 WS |
7 | * |
8 | * some parts adapted by similar drivers from Darius Augulis and Vladimir | |
9 | * Zapolskiy, additional improvements by Wim Van Sebroeck. | |
10 | * | |
bb2fd8a8 WS |
11 | * NOTE: MX1 has a slightly different Watchdog than MX2 and later: |
12 | * | |
13 | * MX1: MX2+: | |
14 | * ---- ----- | |
15 | * Registers: 32-bit 16-bit | |
16 | * Stopable timer: Yes No | |
17 | * Need to enable clk: No Yes | |
18 | * Halt on suspend: Manual Can be automatic | |
19 | */ | |
20 | ||
30cb042a | 21 | #include <linux/clk.h> |
334a9d81 | 22 | #include <linux/delay.h> |
bb2fd8a8 | 23 | #include <linux/init.h> |
39487f66 | 24 | #include <linux/interrupt.h> |
30cb042a | 25 | #include <linux/io.h> |
bb2fd8a8 | 26 | #include <linux/kernel.h> |
bb2fd8a8 WS |
27 | #include <linux/module.h> |
28 | #include <linux/moduleparam.h> | |
f728f4bf | 29 | #include <linux/of_address.h> |
bb2fd8a8 | 30 | #include <linux/platform_device.h> |
a7977003 | 31 | #include <linux/regmap.h> |
30cb042a | 32 | #include <linux/watchdog.h> |
bb2fd8a8 WS |
33 | |
34 | #define DRIVER_NAME "imx2-wdt" | |
35 | ||
36 | #define IMX2_WDT_WCR 0x00 /* Control Register */ | |
37 | #define IMX2_WDT_WCR_WT (0xFF << 8) /* -> Watchdog Timeout Field */ | |
68d4cb80 VZ |
38 | #define IMX2_WDT_WCR_WDA BIT(5) /* -> External Reset WDOG_B */ |
39 | #define IMX2_WDT_WCR_SRS BIT(4) /* -> Software Reset Signal */ | |
40 | #define IMX2_WDT_WCR_WRE BIT(3) /* -> WDOG Reset Enable */ | |
41 | #define IMX2_WDT_WCR_WDE BIT(2) /* -> Watchdog Enable */ | |
42 | #define IMX2_WDT_WCR_WDZST BIT(0) /* -> Watchdog timer Suspend */ | |
bb2fd8a8 WS |
43 | |
44 | #define IMX2_WDT_WSR 0x02 /* Service Register */ | |
45 | #define IMX2_WDT_SEQ1 0x5555 /* -> service sequence 1 */ | |
46 | #define IMX2_WDT_SEQ2 0xAAAA /* -> service sequence 2 */ | |
47 | ||
474ef121 | 48 | #define IMX2_WDT_WRSR 0x04 /* Reset Status Register */ |
68d4cb80 | 49 | #define IMX2_WDT_WRSR_TOUT BIT(1) /* -> Reset due to Timeout */ |
474ef121 | 50 | |
39487f66 VZ |
51 | #define IMX2_WDT_WICR 0x06 /* Interrupt Control Register */ |
52 | #define IMX2_WDT_WICR_WIE BIT(15) /* -> Interrupt Enable */ | |
53 | #define IMX2_WDT_WICR_WTIS BIT(14) /* -> Interrupt Status */ | |
54 | #define IMX2_WDT_WICR_WICT 0xFF /* -> Interrupt Count Timeout */ | |
55 | ||
5fe65ce7 MP |
56 | #define IMX2_WDT_WMCR 0x08 /* Misc Register */ |
57 | ||
bb2fd8a8 WS |
58 | #define IMX2_WDT_MAX_TIME 128 |
59 | #define IMX2_WDT_DEFAULT_TIME 60 /* in seconds */ | |
60 | ||
61 | #define WDOG_SEC_TO_COUNT(s) ((s * 2 - 1) << 8) | |
62 | ||
faad5de0 | 63 | struct imx2_wdt_device { |
bb2fd8a8 | 64 | struct clk *clk; |
a7977003 | 65 | struct regmap *regmap; |
faad5de0 | 66 | struct watchdog_device wdog; |
bc677ff4 | 67 | bool ext_reset; |
faad5de0 | 68 | }; |
bb2fd8a8 | 69 | |
86a1e189 WVS |
70 | static bool nowayout = WATCHDOG_NOWAYOUT; |
71 | module_param(nowayout, bool, 0); | |
bb2fd8a8 WS |
72 | MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" |
73 | __MODULE_STRING(WATCHDOG_NOWAYOUT) ")"); | |
74 | ||
75 | ||
2b77f008 | 76 | static unsigned timeout; |
bb2fd8a8 WS |
77 | module_param(timeout, uint, 0); |
78 | MODULE_PARM_DESC(timeout, "Watchdog timeout in seconds (default=" | |
79 | __MODULE_STRING(IMX2_WDT_DEFAULT_TIME) ")"); | |
80 | ||
81 | static const struct watchdog_info imx2_wdt_info = { | |
82 | .identity = "imx2+ watchdog", | |
83 | .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE, | |
84 | }; | |
85 | ||
39487f66 VZ |
86 | static const struct watchdog_info imx2_wdt_pretimeout_info = { |
87 | .identity = "imx2+ watchdog", | |
88 | .options = WDIOF_KEEPALIVEPING | WDIOF_SETTIMEOUT | WDIOF_MAGICCLOSE | | |
89 | WDIOF_PRETIMEOUT, | |
90 | }; | |
91 | ||
4d8b229d GR |
92 | static int imx2_wdt_restart(struct watchdog_device *wdog, unsigned long action, |
93 | void *data) | |
334a9d81 | 94 | { |
2d9d2475 | 95 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); |
334a9d81 | 96 | unsigned int wcr_enable = IMX2_WDT_WCR_WDE; |
2d9d2475 | 97 | |
bc677ff4 TH |
98 | /* Use internal reset or external - not both */ |
99 | if (wdev->ext_reset) | |
100 | wcr_enable |= IMX2_WDT_WCR_SRS; /* do not assert int reset */ | |
101 | else | |
102 | wcr_enable |= IMX2_WDT_WCR_WDA; /* do not assert ext-reset */ | |
103 | ||
334a9d81 | 104 | /* Assert SRS signal */ |
9493c0d8 | 105 | regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable); |
334a9d81 JL |
106 | /* |
107 | * Due to imx6q errata ERR004346 (WDOG: WDOG SRS bit requires to be | |
108 | * written twice), we add another two writes to ensure there must be at | |
109 | * least two writes happen in the same one 32kHz clock period. We save | |
110 | * the target check here, since the writes shouldn't be a huge burden | |
111 | * for other platforms. | |
112 | */ | |
9493c0d8 FE |
113 | regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable); |
114 | regmap_write(wdev->regmap, IMX2_WDT_WCR, wcr_enable); | |
334a9d81 JL |
115 | |
116 | /* wait for reset to assert... */ | |
117 | mdelay(500); | |
118 | ||
2d9d2475 | 119 | return 0; |
334a9d81 JL |
120 | } |
121 | ||
faad5de0 | 122 | static inline void imx2_wdt_setup(struct watchdog_device *wdog) |
bb2fd8a8 | 123 | { |
faad5de0 | 124 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); |
a7977003 XL |
125 | u32 val; |
126 | ||
faad5de0 | 127 | regmap_read(wdev->regmap, IMX2_WDT_WCR, &val); |
bb2fd8a8 | 128 | |
1a9c5efa AH |
129 | /* Suspend timer in low power mode, write once-only */ |
130 | val |= IMX2_WDT_WCR_WDZST; | |
bb2fd8a8 WS |
131 | /* Strip the old watchdog Time-Out value */ |
132 | val &= ~IMX2_WDT_WCR_WT; | |
bc677ff4 TH |
133 | /* Generate internal chip-level reset if WDOG times out */ |
134 | if (!wdev->ext_reset) | |
135 | val &= ~IMX2_WDT_WCR_WRE; | |
136 | /* Or if external-reset assert WDOG_B reset only on time-out */ | |
137 | else | |
138 | val |= IMX2_WDT_WCR_WRE; | |
bb2fd8a8 WS |
139 | /* Keep Watchdog Disabled */ |
140 | val &= ~IMX2_WDT_WCR_WDE; | |
141 | /* Set the watchdog's Time-Out value */ | |
faad5de0 | 142 | val |= WDOG_SEC_TO_COUNT(wdog->timeout); |
bb2fd8a8 | 143 | |
faad5de0 | 144 | regmap_write(wdev->regmap, IMX2_WDT_WCR, val); |
bb2fd8a8 WS |
145 | |
146 | /* enable the watchdog */ | |
147 | val |= IMX2_WDT_WCR_WDE; | |
faad5de0 | 148 | regmap_write(wdev->regmap, IMX2_WDT_WCR, val); |
bb2fd8a8 WS |
149 | } |
150 | ||
faad5de0 | 151 | static inline bool imx2_wdt_is_running(struct imx2_wdt_device *wdev) |
bb2fd8a8 | 152 | { |
faad5de0 | 153 | u32 val; |
bb2fd8a8 | 154 | |
faad5de0 AG |
155 | regmap_read(wdev->regmap, IMX2_WDT_WCR, &val); |
156 | ||
157 | return val & IMX2_WDT_WCR_WDE; | |
bb2fd8a8 WS |
158 | } |
159 | ||
faad5de0 | 160 | static int imx2_wdt_ping(struct watchdog_device *wdog) |
bb2fd8a8 | 161 | { |
faad5de0 | 162 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); |
bb2fd8a8 | 163 | |
faad5de0 AG |
164 | regmap_write(wdev->regmap, IMX2_WDT_WSR, IMX2_WDT_SEQ1); |
165 | regmap_write(wdev->regmap, IMX2_WDT_WSR, IMX2_WDT_SEQ2); | |
166 | return 0; | |
bb2fd8a8 WS |
167 | } |
168 | ||
0be26725 MK |
169 | static void __imx2_wdt_set_timeout(struct watchdog_device *wdog, |
170 | unsigned int new_timeout) | |
bb2fd8a8 | 171 | { |
faad5de0 AG |
172 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); |
173 | ||
174 | regmap_update_bits(wdev->regmap, IMX2_WDT_WCR, IMX2_WDT_WCR_WT, | |
a7977003 | 175 | WDOG_SEC_TO_COUNT(new_timeout)); |
0be26725 MK |
176 | } |
177 | ||
178 | static int imx2_wdt_set_timeout(struct watchdog_device *wdog, | |
179 | unsigned int new_timeout) | |
180 | { | |
181 | __imx2_wdt_set_timeout(wdog, new_timeout); | |
182 | ||
183 | wdog->timeout = new_timeout; | |
faad5de0 | 184 | return 0; |
bb2fd8a8 WS |
185 | } |
186 | ||
39487f66 VZ |
187 | static int imx2_wdt_set_pretimeout(struct watchdog_device *wdog, |
188 | unsigned int new_pretimeout) | |
189 | { | |
190 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); | |
191 | ||
192 | if (new_pretimeout >= IMX2_WDT_MAX_TIME) | |
193 | return -EINVAL; | |
194 | ||
195 | wdog->pretimeout = new_pretimeout; | |
196 | ||
197 | regmap_update_bits(wdev->regmap, IMX2_WDT_WICR, | |
198 | IMX2_WDT_WICR_WIE | IMX2_WDT_WICR_WICT, | |
199 | IMX2_WDT_WICR_WIE | (new_pretimeout << 1)); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | static irqreturn_t imx2_wdt_isr(int irq, void *wdog_arg) | |
204 | { | |
205 | struct watchdog_device *wdog = wdog_arg; | |
206 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); | |
207 | ||
208 | regmap_write_bits(wdev->regmap, IMX2_WDT_WICR, | |
209 | IMX2_WDT_WICR_WTIS, IMX2_WDT_WICR_WTIS); | |
210 | ||
211 | watchdog_notify_pretimeout(wdog); | |
212 | ||
213 | return IRQ_HANDLED; | |
214 | } | |
215 | ||
faad5de0 | 216 | static int imx2_wdt_start(struct watchdog_device *wdog) |
bb2fd8a8 | 217 | { |
faad5de0 | 218 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); |
bb2fd8a8 | 219 | |
11d7aba9 | 220 | if (imx2_wdt_is_running(wdev)) |
faad5de0 | 221 | imx2_wdt_set_timeout(wdog, wdog->timeout); |
11d7aba9 | 222 | else |
faad5de0 AG |
223 | imx2_wdt_setup(wdog); |
224 | ||
11d7aba9 | 225 | set_bit(WDOG_HW_RUNNING, &wdog->status); |
bb2fd8a8 | 226 | |
11d7aba9 | 227 | return imx2_wdt_ping(wdog); |
bb2fd8a8 WS |
228 | } |
229 | ||
4bd8ce33 | 230 | static const struct watchdog_ops imx2_wdt_ops = { |
bb2fd8a8 | 231 | .owner = THIS_MODULE, |
faad5de0 | 232 | .start = imx2_wdt_start, |
faad5de0 AG |
233 | .ping = imx2_wdt_ping, |
234 | .set_timeout = imx2_wdt_set_timeout, | |
39487f66 | 235 | .set_pretimeout = imx2_wdt_set_pretimeout, |
2d9d2475 | 236 | .restart = imx2_wdt_restart, |
bb2fd8a8 WS |
237 | }; |
238 | ||
4bd8ce33 | 239 | static const struct regmap_config imx2_wdt_regmap_config = { |
a7977003 XL |
240 | .reg_bits = 16, |
241 | .reg_stride = 2, | |
242 | .val_bits = 16, | |
243 | .max_register = 0x8, | |
244 | }; | |
245 | ||
bb2fd8a8 WS |
246 | static int __init imx2_wdt_probe(struct platform_device *pdev) |
247 | { | |
faad5de0 AG |
248 | struct imx2_wdt_device *wdev; |
249 | struct watchdog_device *wdog; | |
bb2fd8a8 | 250 | struct resource *res; |
a7977003 XL |
251 | void __iomem *base; |
252 | int ret; | |
faad5de0 AG |
253 | u32 val; |
254 | ||
255 | wdev = devm_kzalloc(&pdev->dev, sizeof(*wdev), GFP_KERNEL); | |
256 | if (!wdev) | |
257 | return -ENOMEM; | |
bb2fd8a8 WS |
258 | |
259 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
a7977003 XL |
260 | base = devm_ioremap_resource(&pdev->dev, res); |
261 | if (IS_ERR(base)) | |
262 | return PTR_ERR(base); | |
263 | ||
faad5de0 AG |
264 | wdev->regmap = devm_regmap_init_mmio_clk(&pdev->dev, NULL, base, |
265 | &imx2_wdt_regmap_config); | |
266 | if (IS_ERR(wdev->regmap)) { | |
a7977003 | 267 | dev_err(&pdev->dev, "regmap init failed\n"); |
faad5de0 | 268 | return PTR_ERR(wdev->regmap); |
a7977003 | 269 | } |
bb2fd8a8 | 270 | |
faad5de0 AG |
271 | wdev->clk = devm_clk_get(&pdev->dev, NULL); |
272 | if (IS_ERR(wdev->clk)) { | |
bb2fd8a8 | 273 | dev_err(&pdev->dev, "can't get Watchdog clock\n"); |
faad5de0 | 274 | return PTR_ERR(wdev->clk); |
bb2fd8a8 WS |
275 | } |
276 | ||
faad5de0 AG |
277 | wdog = &wdev->wdog; |
278 | wdog->info = &imx2_wdt_info; | |
279 | wdog->ops = &imx2_wdt_ops; | |
280 | wdog->min_timeout = 1; | |
2b77f008 | 281 | wdog->timeout = IMX2_WDT_DEFAULT_TIME; |
11d7aba9 | 282 | wdog->max_hw_heartbeat_ms = IMX2_WDT_MAX_TIME * 1000; |
8135193c | 283 | wdog->parent = &pdev->dev; |
bb2fd8a8 | 284 | |
39487f66 VZ |
285 | ret = platform_get_irq(pdev, 0); |
286 | if (ret > 0) | |
287 | if (!devm_request_irq(&pdev->dev, ret, imx2_wdt_isr, 0, | |
288 | dev_name(&pdev->dev), wdog)) | |
289 | wdog->info = &imx2_wdt_pretimeout_info; | |
290 | ||
aefb163c FE |
291 | ret = clk_prepare_enable(wdev->clk); |
292 | if (ret) | |
293 | return ret; | |
bb2fd8a8 | 294 | |
faad5de0 AG |
295 | regmap_read(wdev->regmap, IMX2_WDT_WRSR, &val); |
296 | wdog->bootstatus = val & IMX2_WDT_WRSR_TOUT ? WDIOF_CARDRESET : 0; | |
bb2fd8a8 | 297 | |
bc677ff4 TH |
298 | wdev->ext_reset = of_property_read_bool(pdev->dev.of_node, |
299 | "fsl,ext-reset-output"); | |
faad5de0 AG |
300 | platform_set_drvdata(pdev, wdog); |
301 | watchdog_set_drvdata(wdog, wdev); | |
302 | watchdog_set_nowayout(wdog, nowayout); | |
2d9d2475 | 303 | watchdog_set_restart_priority(wdog, 128); |
faad5de0 AG |
304 | watchdog_init_timeout(wdog, timeout, &pdev->dev); |
305 | ||
11d7aba9 GR |
306 | if (imx2_wdt_is_running(wdev)) { |
307 | imx2_wdt_set_timeout(wdog, wdog->timeout); | |
308 | set_bit(WDOG_HW_RUNNING, &wdog->status); | |
309 | } | |
faad5de0 | 310 | |
5fe65ce7 MP |
311 | /* |
312 | * Disable the watchdog power down counter at boot. Otherwise the power | |
313 | * down counter will pull down the #WDOG interrupt line for one clock | |
314 | * cycle. | |
315 | */ | |
316 | regmap_write(wdev->regmap, IMX2_WDT_WMCR, 0); | |
317 | ||
faad5de0 AG |
318 | ret = watchdog_register_device(wdog); |
319 | if (ret) { | |
320 | dev_err(&pdev->dev, "cannot register watchdog device\n"); | |
db11cba2 | 321 | goto disable_clk; |
faad5de0 AG |
322 | } |
323 | ||
324 | dev_info(&pdev->dev, "timeout %d sec (nowayout=%d)\n", | |
325 | wdog->timeout, nowayout); | |
326 | ||
327 | return 0; | |
db11cba2 FE |
328 | |
329 | disable_clk: | |
330 | clk_disable_unprepare(wdev->clk); | |
331 | return ret; | |
bb2fd8a8 WS |
332 | } |
333 | ||
334 | static int __exit imx2_wdt_remove(struct platform_device *pdev) | |
335 | { | |
faad5de0 AG |
336 | struct watchdog_device *wdog = platform_get_drvdata(pdev); |
337 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); | |
bb2fd8a8 | 338 | |
faad5de0 | 339 | watchdog_unregister_device(wdog); |
bb2fd8a8 | 340 | |
faad5de0 | 341 | if (imx2_wdt_is_running(wdev)) { |
faad5de0 AG |
342 | imx2_wdt_ping(wdog); |
343 | dev_crit(&pdev->dev, "Device removed: Expect reboot!\n"); | |
bdf49574 | 344 | } |
bb2fd8a8 WS |
345 | return 0; |
346 | } | |
347 | ||
348 | static void imx2_wdt_shutdown(struct platform_device *pdev) | |
349 | { | |
faad5de0 AG |
350 | struct watchdog_device *wdog = platform_get_drvdata(pdev); |
351 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); | |
352 | ||
353 | if (imx2_wdt_is_running(wdev)) { | |
354 | /* | |
11d7aba9 GR |
355 | * We are running, configure max timeout before reboot |
356 | * will take place. | |
faad5de0 | 357 | */ |
faad5de0 AG |
358 | imx2_wdt_set_timeout(wdog, IMX2_WDT_MAX_TIME); |
359 | imx2_wdt_ping(wdog); | |
360 | dev_crit(&pdev->dev, "Device shutdown: Expect reboot!\n"); | |
bb2fd8a8 WS |
361 | } |
362 | } | |
363 | ||
aefbaf3a | 364 | #ifdef CONFIG_PM_SLEEP |
bbd59009 | 365 | /* Disable watchdog if it is active or non-active but still running */ |
aefbaf3a XL |
366 | static int imx2_wdt_suspend(struct device *dev) |
367 | { | |
368 | struct watchdog_device *wdog = dev_get_drvdata(dev); | |
369 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); | |
370 | ||
bbd59009 XL |
371 | /* The watchdog IP block is running */ |
372 | if (imx2_wdt_is_running(wdev)) { | |
0be26725 MK |
373 | /* |
374 | * Don't update wdog->timeout, we'll restore the current value | |
375 | * during resume. | |
376 | */ | |
377 | __imx2_wdt_set_timeout(wdog, IMX2_WDT_MAX_TIME); | |
bbd59009 | 378 | imx2_wdt_ping(wdog); |
bbd59009 | 379 | } |
aefbaf3a XL |
380 | |
381 | clk_disable_unprepare(wdev->clk); | |
382 | ||
383 | return 0; | |
384 | } | |
385 | ||
386 | /* Enable watchdog and configure it if necessary */ | |
387 | static int imx2_wdt_resume(struct device *dev) | |
388 | { | |
389 | struct watchdog_device *wdog = dev_get_drvdata(dev); | |
390 | struct imx2_wdt_device *wdev = watchdog_get_drvdata(wdog); | |
aefb163c | 391 | int ret; |
aefbaf3a | 392 | |
aefb163c FE |
393 | ret = clk_prepare_enable(wdev->clk); |
394 | if (ret) | |
395 | return ret; | |
aefbaf3a XL |
396 | |
397 | if (watchdog_active(wdog) && !imx2_wdt_is_running(wdev)) { | |
bbd59009 XL |
398 | /* |
399 | * If the watchdog is still active and resumes | |
400 | * from deep sleep state, need to restart the | |
401 | * watchdog again. | |
aefbaf3a XL |
402 | */ |
403 | imx2_wdt_setup(wdog); | |
11d7aba9 GR |
404 | } |
405 | if (imx2_wdt_is_running(wdev)) { | |
aefbaf3a XL |
406 | imx2_wdt_set_timeout(wdog, wdog->timeout); |
407 | imx2_wdt_ping(wdog); | |
aefbaf3a XL |
408 | } |
409 | ||
410 | return 0; | |
411 | } | |
412 | #endif | |
413 | ||
414 | static SIMPLE_DEV_PM_OPS(imx2_wdt_pm_ops, imx2_wdt_suspend, | |
415 | imx2_wdt_resume); | |
416 | ||
f5a427ee SG |
417 | static const struct of_device_id imx2_wdt_dt_ids[] = { |
418 | { .compatible = "fsl,imx21-wdt", }, | |
419 | { /* sentinel */ } | |
420 | }; | |
813296a1 | 421 | MODULE_DEVICE_TABLE(of, imx2_wdt_dt_ids); |
f5a427ee | 422 | |
bb2fd8a8 | 423 | static struct platform_driver imx2_wdt_driver = { |
bb2fd8a8 WS |
424 | .remove = __exit_p(imx2_wdt_remove), |
425 | .shutdown = imx2_wdt_shutdown, | |
426 | .driver = { | |
427 | .name = DRIVER_NAME, | |
aefbaf3a | 428 | .pm = &imx2_wdt_pm_ops, |
f5a427ee | 429 | .of_match_table = imx2_wdt_dt_ids, |
bb2fd8a8 WS |
430 | }, |
431 | }; | |
432 | ||
1cb9204c | 433 | module_platform_driver_probe(imx2_wdt_driver, imx2_wdt_probe); |
bb2fd8a8 WS |
434 | |
435 | MODULE_AUTHOR("Wolfram Sang"); | |
436 | MODULE_DESCRIPTION("Watchdog driver for IMX2 and later"); | |
437 | MODULE_LICENSE("GPL v2"); | |
bb2fd8a8 | 438 | MODULE_ALIAS("platform:" DRIVER_NAME); |