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df17f631 | 1 | /* |
2 | * Freescale STMP37XX/STMP378X Real Time Clock driver | |
3 | * | |
4 | * Copyright (c) 2007 Sigmatel, Inc. | |
5 | * Peter Hartley, <peter.hartley@sigmatel.com> | |
6 | * | |
7 | * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved. | |
8 | * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved. | |
7e794cb7 | 9 | * Copyright 2011 Wolfram Sang, Pengutronix e.K. |
df17f631 | 10 | */ |
11 | ||
12 | /* | |
13 | * The code contained herein is licensed under the GNU General Public | |
14 | * License. You may obtain a copy of the GNU General Public License | |
15 | * Version 2 or later at the following locations: | |
16 | * | |
17 | * http://www.opensource.org/licenses/gpl-license.html | |
18 | * http://www.gnu.org/copyleft/gpl.html | |
19 | */ | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/module.h> | |
b5167159 | 22 | #include <linux/io.h> |
df17f631 | 23 | #include <linux/init.h> |
24 | #include <linux/platform_device.h> | |
25 | #include <linux/interrupt.h> | |
28a0c883 | 26 | #include <linux/delay.h> |
df17f631 | 27 | #include <linux/rtc.h> |
5a0e3ad6 | 28 | #include <linux/slab.h> |
dd8d20a3 | 29 | #include <linux/of_device.h> |
c8a6046e | 30 | #include <linux/of.h> |
1a71fb84 WS |
31 | #include <linux/stmp_device.h> |
32 | #include <linux/stmp3xxx_rtc_wdt.h> | |
df17f631 | 33 | |
47eac337 WS |
34 | #define STMP3XXX_RTC_CTRL 0x0 |
35 | #define STMP3XXX_RTC_CTRL_ALARM_IRQ_EN 0x00000001 | |
36 | #define STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN 0x00000002 | |
37 | #define STMP3XXX_RTC_CTRL_ALARM_IRQ 0x00000004 | |
1a71fb84 | 38 | #define STMP3XXX_RTC_CTRL_WATCHDOGEN 0x00000010 |
47eac337 WS |
39 | |
40 | #define STMP3XXX_RTC_STAT 0x10 | |
41 | #define STMP3XXX_RTC_STAT_STALE_SHIFT 16 | |
42 | #define STMP3XXX_RTC_STAT_RTC_PRESENT 0x80000000 | |
7f48b21b UKK |
43 | #define STMP3XXX_RTC_STAT_XTAL32000_PRESENT 0x10000000 |
44 | #define STMP3XXX_RTC_STAT_XTAL32768_PRESENT 0x08000000 | |
47eac337 WS |
45 | |
46 | #define STMP3XXX_RTC_SECONDS 0x30 | |
47 | ||
48 | #define STMP3XXX_RTC_ALARM 0x40 | |
49 | ||
1a71fb84 WS |
50 | #define STMP3XXX_RTC_WATCHDOG 0x50 |
51 | ||
47eac337 | 52 | #define STMP3XXX_RTC_PERSISTENT0 0x60 |
7f48b21b UKK |
53 | #define STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE (1 << 0) |
54 | #define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN (1 << 1) | |
55 | #define STMP3XXX_RTC_PERSISTENT0_ALARM_EN (1 << 2) | |
56 | #define STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP (1 << 4) | |
57 | #define STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP (1 << 5) | |
58 | #define STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ (1 << 6) | |
59 | #define STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE (1 << 7) | |
df17f631 | 60 | |
1a71fb84 WS |
61 | #define STMP3XXX_RTC_PERSISTENT1 0x70 |
62 | /* missing bitmask in headers */ | |
63 | #define STMP3XXX_RTC_PERSISTENT1_FORCE_UPDATER 0x80000000 | |
64 | ||
df17f631 | 65 | struct stmp3xxx_rtc_data { |
66 | struct rtc_device *rtc; | |
df17f631 | 67 | void __iomem *io; |
7e794cb7 | 68 | int irq_alarm; |
df17f631 | 69 | }; |
70 | ||
1a71fb84 WS |
71 | #if IS_ENABLED(CONFIG_STMP3XXX_RTC_WATCHDOG) |
72 | /** | |
73 | * stmp3xxx_wdt_set_timeout - configure the watchdog inside the STMP3xxx RTC | |
74 | * @dev: the parent device of the watchdog (= the RTC) | |
75 | * @timeout: the desired value for the timeout register of the watchdog. | |
76 | * 0 disables the watchdog | |
77 | * | |
78 | * The watchdog needs one register and two bits which are in the RTC domain. | |
79 | * To handle the resource conflict, the RTC driver will create another | |
80 | * platform_device for the watchdog driver as a child of the RTC device. | |
81 | * The watchdog driver is passed the below accessor function via platform_data | |
82 | * to configure the watchdog. Locking is not needed because accessing SET/CLR | |
83 | * registers is atomic. | |
84 | */ | |
85 | ||
86 | static void stmp3xxx_wdt_set_timeout(struct device *dev, u32 timeout) | |
87 | { | |
88 | struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev); | |
89 | ||
90 | if (timeout) { | |
91 | writel(timeout, rtc_data->io + STMP3XXX_RTC_WATCHDOG); | |
92 | writel(STMP3XXX_RTC_CTRL_WATCHDOGEN, | |
93 | rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_SET); | |
94 | writel(STMP3XXX_RTC_PERSISTENT1_FORCE_UPDATER, | |
95 | rtc_data->io + STMP3XXX_RTC_PERSISTENT1 + STMP_OFFSET_REG_SET); | |
96 | } else { | |
97 | writel(STMP3XXX_RTC_CTRL_WATCHDOGEN, | |
98 | rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR); | |
99 | writel(STMP3XXX_RTC_PERSISTENT1_FORCE_UPDATER, | |
100 | rtc_data->io + STMP3XXX_RTC_PERSISTENT1 + STMP_OFFSET_REG_CLR); | |
101 | } | |
102 | } | |
103 | ||
104 | static struct stmp3xxx_wdt_pdata wdt_pdata = { | |
105 | .wdt_set_timeout = stmp3xxx_wdt_set_timeout, | |
106 | }; | |
107 | ||
108 | static void stmp3xxx_wdt_register(struct platform_device *rtc_pdev) | |
109 | { | |
110 | struct platform_device *wdt_pdev = | |
111 | platform_device_alloc("stmp3xxx_rtc_wdt", rtc_pdev->id); | |
112 | ||
113 | if (wdt_pdev) { | |
114 | wdt_pdev->dev.parent = &rtc_pdev->dev; | |
115 | wdt_pdev->dev.platform_data = &wdt_pdata; | |
116 | platform_device_add(wdt_pdev); | |
117 | } | |
118 | } | |
119 | #else | |
120 | static void stmp3xxx_wdt_register(struct platform_device *rtc_pdev) | |
121 | { | |
122 | } | |
123 | #endif /* CONFIG_STMP3XXX_RTC_WATCHDOG */ | |
124 | ||
28a0c883 | 125 | static int stmp3xxx_wait_time(struct stmp3xxx_rtc_data *rtc_data) |
df17f631 | 126 | { |
28a0c883 | 127 | int timeout = 5000; /* 3ms according to i.MX28 Ref Manual */ |
df17f631 | 128 | /* |
28a0c883 LW |
129 | * The i.MX28 Applications Processor Reference Manual, Rev. 1, 2010 |
130 | * states: | |
131 | * | The order in which registers are updated is | |
132 | * | Persistent 0, 1, 2, 3, 4, 5, Alarm, Seconds. | |
133 | * | (This list is in bitfield order, from LSB to MSB, as they would | |
134 | * | appear in the STALE_REGS and NEW_REGS bitfields of the HW_RTC_STAT | |
135 | * | register. For example, the Seconds register corresponds to | |
136 | * | STALE_REGS or NEW_REGS containing 0x80.) | |
df17f631 | 137 | */ |
28a0c883 LW |
138 | do { |
139 | if (!(readl(rtc_data->io + STMP3XXX_RTC_STAT) & | |
140 | (0x80 << STMP3XXX_RTC_STAT_STALE_SHIFT))) | |
141 | return 0; | |
142 | udelay(1); | |
143 | } while (--timeout > 0); | |
144 | return (readl(rtc_data->io + STMP3XXX_RTC_STAT) & | |
145 | (0x80 << STMP3XXX_RTC_STAT_STALE_SHIFT)) ? -ETIME : 0; | |
df17f631 | 146 | } |
147 | ||
148 | /* Time read/write */ | |
149 | static int stmp3xxx_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm) | |
150 | { | |
28a0c883 | 151 | int ret; |
df17f631 | 152 | struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev); |
153 | ||
28a0c883 LW |
154 | ret = stmp3xxx_wait_time(rtc_data); |
155 | if (ret) | |
156 | return ret; | |
157 | ||
b5167159 | 158 | rtc_time_to_tm(readl(rtc_data->io + STMP3XXX_RTC_SECONDS), rtc_tm); |
df17f631 | 159 | return 0; |
160 | } | |
161 | ||
162 | static int stmp3xxx_rtc_set_mmss(struct device *dev, unsigned long t) | |
163 | { | |
164 | struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev); | |
165 | ||
b5167159 | 166 | writel(t, rtc_data->io + STMP3XXX_RTC_SECONDS); |
28a0c883 | 167 | return stmp3xxx_wait_time(rtc_data); |
df17f631 | 168 | } |
169 | ||
170 | /* interrupt(s) handler */ | |
171 | static irqreturn_t stmp3xxx_rtc_interrupt(int irq, void *dev_id) | |
172 | { | |
173 | struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev_id); | |
7e794cb7 | 174 | u32 status = readl(rtc_data->io + STMP3XXX_RTC_CTRL); |
df17f631 | 175 | |
47eac337 | 176 | if (status & STMP3XXX_RTC_CTRL_ALARM_IRQ) { |
b5167159 | 177 | writel(STMP3XXX_RTC_CTRL_ALARM_IRQ, |
24417829 | 178 | rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR); |
7e794cb7 WS |
179 | rtc_update_irq(rtc_data->rtc, 1, RTC_AF | RTC_IRQF); |
180 | return IRQ_HANDLED; | |
df17f631 | 181 | } |
182 | ||
7e794cb7 | 183 | return IRQ_NONE; |
df17f631 | 184 | } |
185 | ||
186 | static int stmp3xxx_alarm_irq_enable(struct device *dev, unsigned int enabled) | |
187 | { | |
188 | struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev); | |
df17f631 | 189 | |
190 | if (enabled) { | |
b5167159 WS |
191 | writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN | |
192 | STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN, | |
24417829 HG |
193 | rtc_data->io + STMP3XXX_RTC_PERSISTENT0 + |
194 | STMP_OFFSET_REG_SET); | |
b5167159 | 195 | writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, |
24417829 | 196 | rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_SET); |
df17f631 | 197 | } else { |
b5167159 WS |
198 | writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN | |
199 | STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN, | |
24417829 HG |
200 | rtc_data->io + STMP3XXX_RTC_PERSISTENT0 + |
201 | STMP_OFFSET_REG_CLR); | |
b5167159 | 202 | writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, |
24417829 | 203 | rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR); |
df17f631 | 204 | } |
205 | return 0; | |
206 | } | |
207 | ||
df17f631 | 208 | static int stmp3xxx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alm) |
209 | { | |
210 | struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev); | |
211 | ||
b5167159 | 212 | rtc_time_to_tm(readl(rtc_data->io + STMP3XXX_RTC_ALARM), &alm->time); |
df17f631 | 213 | return 0; |
214 | } | |
215 | ||
216 | static int stmp3xxx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alm) | |
217 | { | |
218 | unsigned long t; | |
219 | struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev); | |
220 | ||
221 | rtc_tm_to_time(&alm->time, &t); | |
b5167159 | 222 | writel(t, rtc_data->io + STMP3XXX_RTC_ALARM); |
7e794cb7 WS |
223 | |
224 | stmp3xxx_alarm_irq_enable(dev, alm->enabled); | |
225 | ||
df17f631 | 226 | return 0; |
227 | } | |
228 | ||
229 | static struct rtc_class_ops stmp3xxx_rtc_ops = { | |
230 | .alarm_irq_enable = | |
231 | stmp3xxx_alarm_irq_enable, | |
df17f631 | 232 | .read_time = stmp3xxx_rtc_gettime, |
233 | .set_mmss = stmp3xxx_rtc_set_mmss, | |
234 | .read_alarm = stmp3xxx_rtc_read_alarm, | |
235 | .set_alarm = stmp3xxx_rtc_set_alarm, | |
236 | }; | |
237 | ||
238 | static int stmp3xxx_rtc_remove(struct platform_device *pdev) | |
239 | { | |
240 | struct stmp3xxx_rtc_data *rtc_data = platform_get_drvdata(pdev); | |
241 | ||
242 | if (!rtc_data) | |
243 | return 0; | |
244 | ||
7e794cb7 | 245 | writel(STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, |
24417829 | 246 | rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR); |
df17f631 | 247 | |
248 | return 0; | |
249 | } | |
250 | ||
251 | static int stmp3xxx_rtc_probe(struct platform_device *pdev) | |
252 | { | |
253 | struct stmp3xxx_rtc_data *rtc_data; | |
254 | struct resource *r; | |
7f48b21b UKK |
255 | u32 rtc_stat; |
256 | u32 pers0_set, pers0_clr; | |
257 | u32 crystalfreq = 0; | |
df17f631 | 258 | int err; |
259 | ||
87a81420 | 260 | rtc_data = devm_kzalloc(&pdev->dev, sizeof(*rtc_data), GFP_KERNEL); |
df17f631 | 261 | if (!rtc_data) |
262 | return -ENOMEM; | |
263 | ||
264 | r = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
265 | if (!r) { | |
266 | dev_err(&pdev->dev, "failed to get resource\n"); | |
87a81420 | 267 | return -ENXIO; |
df17f631 | 268 | } |
269 | ||
87a81420 | 270 | rtc_data->io = devm_ioremap(&pdev->dev, r->start, resource_size(r)); |
df17f631 | 271 | if (!rtc_data->io) { |
272 | dev_err(&pdev->dev, "ioremap failed\n"); | |
87a81420 | 273 | return -EIO; |
df17f631 | 274 | } |
275 | ||
276 | rtc_data->irq_alarm = platform_get_irq(pdev, 0); | |
df17f631 | 277 | |
7f48b21b UKK |
278 | rtc_stat = readl(rtc_data->io + STMP3XXX_RTC_STAT); |
279 | if (!(rtc_stat & STMP3XXX_RTC_STAT_RTC_PRESENT)) { | |
df17f631 | 280 | dev_err(&pdev->dev, "no device onboard\n"); |
87a81420 | 281 | return -ENODEV; |
df17f631 | 282 | } |
283 | ||
a91d2bab WS |
284 | platform_set_drvdata(pdev, rtc_data); |
285 | ||
4e80b188 FE |
286 | err = stmp_reset_block(rtc_data->io); |
287 | if (err) { | |
288 | dev_err(&pdev->dev, "stmp_reset_block failed: %d\n", err); | |
289 | return err; | |
290 | } | |
291 | ||
7f48b21b UKK |
292 | /* |
293 | * Obviously the rtc needs a clock input to be able to run. | |
294 | * This clock can be provided by an external 32k crystal. If that one is | |
295 | * missing XTAL must not be disabled in suspend which consumes a | |
296 | * lot of power. Normally the presence and exact frequency (supported | |
297 | * are 32000 Hz and 32768 Hz) is detectable from fuses, but as reality | |
298 | * proves these fuses are not blown correctly on all machines, so the | |
299 | * frequency can be overridden in the device tree. | |
300 | */ | |
301 | if (rtc_stat & STMP3XXX_RTC_STAT_XTAL32000_PRESENT) | |
302 | crystalfreq = 32000; | |
303 | else if (rtc_stat & STMP3XXX_RTC_STAT_XTAL32768_PRESENT) | |
304 | crystalfreq = 32768; | |
305 | ||
306 | of_property_read_u32(pdev->dev.of_node, "stmp,crystal-freq", | |
307 | &crystalfreq); | |
308 | ||
309 | switch (crystalfreq) { | |
310 | case 32000: | |
311 | /* keep 32kHz crystal running in low-power mode */ | |
312 | pers0_set = STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ | | |
313 | STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP | | |
314 | STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE; | |
315 | pers0_clr = STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP; | |
316 | break; | |
317 | case 32768: | |
318 | /* keep 32.768kHz crystal running in low-power mode */ | |
319 | pers0_set = STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP | | |
320 | STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE; | |
321 | pers0_clr = STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP | | |
322 | STMP3XXX_RTC_PERSISTENT0_XTAL32_FREQ; | |
323 | break; | |
324 | default: | |
325 | dev_warn(&pdev->dev, | |
326 | "invalid crystal-freq specified in device-tree. Assuming no crystal\n"); | |
327 | /* fall-through */ | |
328 | case 0: | |
329 | /* keep XTAL on in low-power mode */ | |
330 | pers0_set = STMP3XXX_RTC_PERSISTENT0_XTAL24MHZ_PWRUP; | |
331 | pers0_clr = STMP3XXX_RTC_PERSISTENT0_XTAL32KHZ_PWRUP | | |
332 | STMP3XXX_RTC_PERSISTENT0_CLOCKSOURCE; | |
333 | } | |
334 | ||
24417829 HG |
335 | writel(pers0_set, rtc_data->io + STMP3XXX_RTC_PERSISTENT0 + |
336 | STMP_OFFSET_REG_SET); | |
7f48b21b | 337 | |
b5167159 | 338 | writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN | |
47eac337 | 339 | STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN | |
7f48b21b | 340 | STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE | pers0_clr, |
24417829 | 341 | rtc_data->io + STMP3XXX_RTC_PERSISTENT0 + STMP_OFFSET_REG_CLR); |
a91d2bab | 342 | |
7e794cb7 WS |
343 | writel(STMP3XXX_RTC_CTRL_ONEMSEC_IRQ_EN | |
344 | STMP3XXX_RTC_CTRL_ALARM_IRQ_EN, | |
24417829 | 345 | rtc_data->io + STMP3XXX_RTC_CTRL + STMP_OFFSET_REG_CLR); |
7e794cb7 | 346 | |
87a81420 | 347 | rtc_data->rtc = devm_rtc_device_register(&pdev->dev, pdev->name, |
df17f631 | 348 | &stmp3xxx_rtc_ops, THIS_MODULE); |
dfd2a178 JH |
349 | if (IS_ERR(rtc_data->rtc)) |
350 | return PTR_ERR(rtc_data->rtc); | |
df17f631 | 351 | |
87a81420 JH |
352 | err = devm_request_irq(&pdev->dev, rtc_data->irq_alarm, |
353 | stmp3xxx_rtc_interrupt, 0, "RTC alarm", &pdev->dev); | |
df17f631 | 354 | if (err) { |
355 | dev_err(&pdev->dev, "Cannot claim IRQ%d\n", | |
356 | rtc_data->irq_alarm); | |
dfd2a178 | 357 | return err; |
df17f631 | 358 | } |
df17f631 | 359 | |
1a71fb84 | 360 | stmp3xxx_wdt_register(pdev); |
df17f631 | 361 | return 0; |
df17f631 | 362 | } |
363 | ||
ef69a7f0 JH |
364 | #ifdef CONFIG_PM_SLEEP |
365 | static int stmp3xxx_rtc_suspend(struct device *dev) | |
df17f631 | 366 | { |
367 | return 0; | |
368 | } | |
369 | ||
ef69a7f0 | 370 | static int stmp3xxx_rtc_resume(struct device *dev) |
df17f631 | 371 | { |
ef69a7f0 | 372 | struct stmp3xxx_rtc_data *rtc_data = dev_get_drvdata(dev); |
df17f631 | 373 | |
36d1da1d | 374 | stmp_reset_block(rtc_data->io); |
b5167159 | 375 | writel(STMP3XXX_RTC_PERSISTENT0_ALARM_EN | |
47eac337 WS |
376 | STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE_EN | |
377 | STMP3XXX_RTC_PERSISTENT0_ALARM_WAKE, | |
24417829 | 378 | rtc_data->io + STMP3XXX_RTC_PERSISTENT0 + STMP_OFFSET_REG_CLR); |
df17f631 | 379 | return 0; |
380 | } | |
df17f631 | 381 | #endif |
382 | ||
ef69a7f0 JH |
383 | static SIMPLE_DEV_PM_OPS(stmp3xxx_rtc_pm_ops, stmp3xxx_rtc_suspend, |
384 | stmp3xxx_rtc_resume); | |
385 | ||
dd8d20a3 MV |
386 | static const struct of_device_id rtc_dt_ids[] = { |
387 | { .compatible = "fsl,stmp3xxx-rtc", }, | |
388 | { /* sentinel */ } | |
389 | }; | |
390 | MODULE_DEVICE_TABLE(of, rtc_dt_ids); | |
391 | ||
df17f631 | 392 | static struct platform_driver stmp3xxx_rtcdrv = { |
393 | .probe = stmp3xxx_rtc_probe, | |
394 | .remove = stmp3xxx_rtc_remove, | |
df17f631 | 395 | .driver = { |
396 | .name = "stmp3xxx-rtc", | |
ef69a7f0 | 397 | .pm = &stmp3xxx_rtc_pm_ops, |
462a465b | 398 | .of_match_table = rtc_dt_ids, |
df17f631 | 399 | }, |
400 | }; | |
401 | ||
0c4eae66 | 402 | module_platform_driver(stmp3xxx_rtcdrv); |
df17f631 | 403 | |
404 | MODULE_DESCRIPTION("STMP3xxx RTC Driver"); | |
7e794cb7 WS |
405 | MODULE_AUTHOR("dmitry pervushin <dpervushin@embeddedalley.com> and " |
406 | "Wolfram Sang <w.sang@pengutronix.de>"); | |
df17f631 | 407 | MODULE_LICENSE("GPL"); |