diff options
author | Ben Dooks <ben-linux@fluff.org> | 2006-09-29 05:00:19 -0400 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-29 12:18:13 -0400 |
commit | d202a6c0883cf17a4a6e61a12e138598ec3ed32d (patch) | |
tree | 385e5fd11d45071fc49abf21fe7718b205901a88 | |
parent | 99f932f02627b211f7efa9602ddc389d1ccbed2b (diff) |
[PATCH] Remove old drivers/char/s3c2410_rtc.c
This can now be removed, since there is now a drivers/rtc/rtc-s3c.c driver.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r-- | drivers/char/Kconfig | 8 | ||||
-rw-r--r-- | drivers/char/Makefile | 1 | ||||
-rw-r--r-- | drivers/char/s3c2410-rtc.c | 591 |
3 files changed, 0 insertions, 600 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 1b21c3a911d9..4cc619edf424 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig | |||
@@ -831,14 +831,6 @@ config DS1302 | |||
831 | will get access to the real time clock (or hardware clock) built | 831 | will get access to the real time clock (or hardware clock) built |
832 | into your computer. | 832 | into your computer. |
833 | 833 | ||
834 | config S3C2410_RTC | ||
835 | bool "S3C2410 RTC Driver" | ||
836 | depends on ARCH_S3C2410 | ||
837 | help | ||
838 | RTC (Realtime Clock) driver for the clock inbuilt into the | ||
839 | Samsung S3C2410. This can provide periodic interrupt rates | ||
840 | from 1Hz to 64Hz for user programs, and wakeup from Alarm. | ||
841 | |||
842 | config COBALT_LCD | 834 | config COBALT_LCD |
843 | bool "Support for Cobalt LCD" | 835 | bool "Support for Cobalt LCD" |
844 | depends on MIPS_COBALT | 836 | depends on MIPS_COBALT |
diff --git a/drivers/char/Makefile b/drivers/char/Makefile index b583d0cd9fbe..19114df59bbd 100644 --- a/drivers/char/Makefile +++ b/drivers/char/Makefile | |||
@@ -69,7 +69,6 @@ obj-$(CONFIG_EFI_RTC) += efirtc.o | |||
69 | obj-$(CONFIG_SGI_DS1286) += ds1286.o | 69 | obj-$(CONFIG_SGI_DS1286) += ds1286.o |
70 | obj-$(CONFIG_SGI_IP27_RTC) += ip27-rtc.o | 70 | obj-$(CONFIG_SGI_IP27_RTC) += ip27-rtc.o |
71 | obj-$(CONFIG_DS1302) += ds1302.o | 71 | obj-$(CONFIG_DS1302) += ds1302.o |
72 | obj-$(CONFIG_S3C2410_RTC) += s3c2410-rtc.o | ||
73 | ifeq ($(CONFIG_GENERIC_NVRAM),y) | 72 | ifeq ($(CONFIG_GENERIC_NVRAM),y) |
74 | obj-$(CONFIG_NVRAM) += generic_nvram.o | 73 | obj-$(CONFIG_NVRAM) += generic_nvram.o |
75 | else | 74 | else |
diff --git a/drivers/char/s3c2410-rtc.c b/drivers/char/s3c2410-rtc.c deleted file mode 100644 index 5458ef1634e5..000000000000 --- a/drivers/char/s3c2410-rtc.c +++ /dev/null | |||
@@ -1,591 +0,0 @@ | |||
1 | /* drivers/char/s3c2410_rtc.c | ||
2 | * | ||
3 | * Copyright (c) 2004 Simtec Electronics <linux@simtec.co.uk> | ||
4 | * http://www.simtec.co.uk/products/SWLINUX/ | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or modify | ||
7 | * it under the terms of the GNU General Public License version 2 as | ||
8 | * published by the Free Software Foundation. | ||
9 | * | ||
10 | * S3C2410 Internal RTC Driver | ||
11 | * | ||
12 | * Changelog: | ||
13 | * 08-Nov-2004 BJD Initial creation | ||
14 | * 12-Nov-2004 BJD Added periodic IRQ and PM code | ||
15 | * 22-Nov-2004 BJD Sign-test on alarm code to check for <0 | ||
16 | * 10-Mar-2005 LCVR Changed S3C2410_VA_RTC to S3C24XX_VA_RTC | ||
17 | */ | ||
18 | |||
19 | #include <linux/module.h> | ||
20 | #include <linux/fs.h> | ||
21 | #include <linux/string.h> | ||
22 | #include <linux/init.h> | ||
23 | #include <linux/platform_device.h> | ||
24 | #include <linux/interrupt.h> | ||
25 | #include <linux/rtc.h> | ||
26 | #include <linux/bcd.h> | ||
27 | #include <linux/clk.h> | ||
28 | |||
29 | #include <asm/hardware.h> | ||
30 | #include <asm/uaccess.h> | ||
31 | #include <asm/io.h> | ||
32 | #include <asm/irq.h> | ||
33 | #include <asm/rtc.h> | ||
34 | |||
35 | #include <asm/mach/time.h> | ||
36 | |||
37 | #include <asm/arch/regs-rtc.h> | ||
38 | |||
39 | /* need this for the RTC_AF definitions */ | ||
40 | #include <linux/mc146818rtc.h> | ||
41 | |||
42 | #undef S3C24XX_VA_RTC | ||
43 | #define S3C24XX_VA_RTC s3c2410_rtc_base | ||
44 | |||
45 | static struct resource *s3c2410_rtc_mem; | ||
46 | |||
47 | static void __iomem *s3c2410_rtc_base; | ||
48 | static int s3c2410_rtc_alarmno = NO_IRQ; | ||
49 | static int s3c2410_rtc_tickno = NO_IRQ; | ||
50 | static int s3c2410_rtc_freq = 1; | ||
51 | |||
52 | static DEFINE_SPINLOCK(s3c2410_rtc_pie_lock); | ||
53 | |||
54 | /* IRQ Handlers */ | ||
55 | |||
56 | static irqreturn_t s3c2410_rtc_alarmirq(int irq, void *id, struct pt_regs *r) | ||
57 | { | ||
58 | rtc_update(1, RTC_AF | RTC_IRQF); | ||
59 | return IRQ_HANDLED; | ||
60 | } | ||
61 | |||
62 | static irqreturn_t s3c2410_rtc_tickirq(int irq, void *id, struct pt_regs *r) | ||
63 | { | ||
64 | rtc_update(1, RTC_PF | RTC_IRQF); | ||
65 | return IRQ_HANDLED; | ||
66 | } | ||
67 | |||
68 | /* Update control registers */ | ||
69 | static void s3c2410_rtc_setaie(int to) | ||
70 | { | ||
71 | unsigned int tmp; | ||
72 | |||
73 | pr_debug("%s: aie=%d\n", __FUNCTION__, to); | ||
74 | |||
75 | tmp = readb(S3C2410_RTCALM); | ||
76 | |||
77 | if (to) | ||
78 | tmp |= S3C2410_RTCALM_ALMEN; | ||
79 | else | ||
80 | tmp &= ~S3C2410_RTCALM_ALMEN; | ||
81 | |||
82 | |||
83 | writeb(tmp, S3C2410_RTCALM); | ||
84 | } | ||
85 | |||
86 | static void s3c2410_rtc_setpie(int to) | ||
87 | { | ||
88 | unsigned int tmp; | ||
89 | |||
90 | pr_debug("%s: pie=%d\n", __FUNCTION__, to); | ||
91 | |||
92 | spin_lock_irq(&s3c2410_rtc_pie_lock); | ||
93 | tmp = readb(S3C2410_TICNT) & ~S3C2410_TICNT_ENABLE; | ||
94 | |||
95 | if (to) | ||
96 | tmp |= S3C2410_TICNT_ENABLE; | ||
97 | |||
98 | writeb(tmp, S3C2410_TICNT); | ||
99 | spin_unlock_irq(&s3c2410_rtc_pie_lock); | ||
100 | } | ||
101 | |||
102 | static void s3c2410_rtc_setfreq(int freq) | ||
103 | { | ||
104 | unsigned int tmp; | ||
105 | |||
106 | spin_lock_irq(&s3c2410_rtc_pie_lock); | ||
107 | tmp = readb(S3C2410_TICNT) & S3C2410_TICNT_ENABLE; | ||
108 | |||
109 | s3c2410_rtc_freq = freq; | ||
110 | |||
111 | tmp |= (128 / freq)-1; | ||
112 | |||
113 | writeb(tmp, S3C2410_TICNT); | ||
114 | spin_unlock_irq(&s3c2410_rtc_pie_lock); | ||
115 | } | ||
116 | |||
117 | /* Time read/write */ | ||
118 | |||
119 | static int s3c2410_rtc_gettime(struct rtc_time *rtc_tm) | ||
120 | { | ||
121 | unsigned int have_retried = 0; | ||
122 | |||
123 | retry_get_time: | ||
124 | rtc_tm->tm_min = readb(S3C2410_RTCMIN); | ||
125 | rtc_tm->tm_hour = readb(S3C2410_RTCHOUR); | ||
126 | rtc_tm->tm_mday = readb(S3C2410_RTCDATE); | ||
127 | rtc_tm->tm_mon = readb(S3C2410_RTCMON); | ||
128 | rtc_tm->tm_year = readb(S3C2410_RTCYEAR); | ||
129 | rtc_tm->tm_sec = readb(S3C2410_RTCSEC); | ||
130 | |||
131 | /* the only way to work out wether the system was mid-update | ||
132 | * when we read it is to check the second counter, and if it | ||
133 | * is zero, then we re-try the entire read | ||
134 | */ | ||
135 | |||
136 | if (rtc_tm->tm_sec == 0 && !have_retried) { | ||
137 | have_retried = 1; | ||
138 | goto retry_get_time; | ||
139 | } | ||
140 | |||
141 | pr_debug("read time %02x.%02x.%02x %02x/%02x/%02x\n", | ||
142 | rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday, | ||
143 | rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec); | ||
144 | |||
145 | BCD_TO_BIN(rtc_tm->tm_sec); | ||
146 | BCD_TO_BIN(rtc_tm->tm_min); | ||
147 | BCD_TO_BIN(rtc_tm->tm_hour); | ||
148 | BCD_TO_BIN(rtc_tm->tm_mday); | ||
149 | BCD_TO_BIN(rtc_tm->tm_mon); | ||
150 | BCD_TO_BIN(rtc_tm->tm_year); | ||
151 | |||
152 | rtc_tm->tm_year += 100; | ||
153 | rtc_tm->tm_mon -= 1; | ||
154 | |||
155 | return 0; | ||
156 | } | ||
157 | |||
158 | |||
159 | static int s3c2410_rtc_settime(struct rtc_time *tm) | ||
160 | { | ||
161 | /* the rtc gets round the y2k problem by just not supporting it */ | ||
162 | |||
163 | if (tm->tm_year < 100) | ||
164 | return -EINVAL; | ||
165 | |||
166 | writeb(BIN2BCD(tm->tm_sec), S3C2410_RTCSEC); | ||
167 | writeb(BIN2BCD(tm->tm_min), S3C2410_RTCMIN); | ||
168 | writeb(BIN2BCD(tm->tm_hour), S3C2410_RTCHOUR); | ||
169 | writeb(BIN2BCD(tm->tm_mday), S3C2410_RTCDATE); | ||
170 | writeb(BIN2BCD(tm->tm_mon + 1), S3C2410_RTCMON); | ||
171 | writeb(BIN2BCD(tm->tm_year - 100), S3C2410_RTCYEAR); | ||
172 | |||
173 | return 0; | ||
174 | } | ||
175 | |||
176 | static int s3c2410_rtc_getalarm(struct rtc_wkalrm *alrm) | ||
177 | { | ||
178 | struct rtc_time *alm_tm = &alrm->time; | ||
179 | unsigned int alm_en; | ||
180 | |||
181 | alm_tm->tm_sec = readb(S3C2410_ALMSEC); | ||
182 | alm_tm->tm_min = readb(S3C2410_ALMMIN); | ||
183 | alm_tm->tm_hour = readb(S3C2410_ALMHOUR); | ||
184 | alm_tm->tm_mon = readb(S3C2410_ALMMON); | ||
185 | alm_tm->tm_mday = readb(S3C2410_ALMDATE); | ||
186 | alm_tm->tm_year = readb(S3C2410_ALMYEAR); | ||
187 | |||
188 | alm_en = readb(S3C2410_RTCALM); | ||
189 | |||
190 | pr_debug("read alarm %02x %02x.%02x.%02x %02x/%02x/%02x\n", | ||
191 | alm_en, | ||
192 | alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday, | ||
193 | alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec); | ||
194 | |||
195 | |||
196 | /* decode the alarm enable field */ | ||
197 | |||
198 | if (alm_en & S3C2410_RTCALM_SECEN) { | ||
199 | BCD_TO_BIN(alm_tm->tm_sec); | ||
200 | } else { | ||
201 | alm_tm->tm_sec = 0xff; | ||
202 | } | ||
203 | |||
204 | if (alm_en & S3C2410_RTCALM_MINEN) { | ||
205 | BCD_TO_BIN(alm_tm->tm_min); | ||
206 | } else { | ||
207 | alm_tm->tm_min = 0xff; | ||
208 | } | ||
209 | |||
210 | if (alm_en & S3C2410_RTCALM_HOUREN) { | ||
211 | BCD_TO_BIN(alm_tm->tm_hour); | ||
212 | } else { | ||
213 | alm_tm->tm_hour = 0xff; | ||
214 | } | ||
215 | |||
216 | if (alm_en & S3C2410_RTCALM_DAYEN) { | ||
217 | BCD_TO_BIN(alm_tm->tm_mday); | ||
218 | } else { | ||
219 | alm_tm->tm_mday = 0xff; | ||
220 | } | ||
221 | |||
222 | if (alm_en & S3C2410_RTCALM_MONEN) { | ||
223 | BCD_TO_BIN(alm_tm->tm_mon); | ||
224 | alm_tm->tm_mon -= 1; | ||
225 | } else { | ||
226 | alm_tm->tm_mon = 0xff; | ||
227 | } | ||
228 | |||
229 | if (alm_en & S3C2410_RTCALM_YEAREN) { | ||
230 | BCD_TO_BIN(alm_tm->tm_year); | ||
231 | } else { | ||
232 | alm_tm->tm_year = 0xffff; | ||
233 | } | ||
234 | |||
235 | /* todo - set alrm->enabled ? */ | ||
236 | |||
237 | return 0; | ||
238 | } | ||
239 | |||
240 | static int s3c2410_rtc_setalarm(struct rtc_wkalrm *alrm) | ||
241 | { | ||
242 | struct rtc_time *tm = &alrm->time; | ||
243 | unsigned int alrm_en; | ||
244 | |||
245 | pr_debug("s3c2410_rtc_setalarm: %d, %02x/%02x/%02x %02x.%02x.%02x\n", | ||
246 | alrm->enabled, | ||
247 | tm->tm_mday & 0xff, tm->tm_mon & 0xff, tm->tm_year & 0xff, | ||
248 | tm->tm_hour & 0xff, tm->tm_min & 0xff, tm->tm_sec); | ||
249 | |||
250 | if (alrm->enabled || 1) { | ||
251 | alrm_en = readb(S3C2410_RTCALM) & S3C2410_RTCALM_ALMEN; | ||
252 | writeb(0x00, S3C2410_RTCALM); | ||
253 | |||
254 | if (tm->tm_sec < 60 && tm->tm_sec >= 0) { | ||
255 | alrm_en |= S3C2410_RTCALM_SECEN; | ||
256 | writeb(BIN2BCD(tm->tm_sec), S3C2410_ALMSEC); | ||
257 | } | ||
258 | |||
259 | if (tm->tm_min < 60 && tm->tm_min >= 0) { | ||
260 | alrm_en |= S3C2410_RTCALM_MINEN; | ||
261 | writeb(BIN2BCD(tm->tm_min), S3C2410_ALMMIN); | ||
262 | } | ||
263 | |||
264 | if (tm->tm_hour < 24 && tm->tm_hour >= 0) { | ||
265 | alrm_en |= S3C2410_RTCALM_HOUREN; | ||
266 | writeb(BIN2BCD(tm->tm_hour), S3C2410_ALMHOUR); | ||
267 | } | ||
268 | |||
269 | pr_debug("setting S3C2410_RTCALM to %08x\n", alrm_en); | ||
270 | |||
271 | writeb(alrm_en, S3C2410_RTCALM); | ||
272 | enable_irq_wake(s3c2410_rtc_alarmno); | ||
273 | } else { | ||
274 | alrm_en = readb(S3C2410_RTCALM); | ||
275 | alrm_en &= ~S3C2410_RTCALM_ALMEN; | ||
276 | writeb(alrm_en, S3C2410_RTCALM); | ||
277 | disable_irq_wake(s3c2410_rtc_alarmno); | ||
278 | } | ||
279 | |||
280 | return 0; | ||
281 | } | ||
282 | |||
283 | static int s3c2410_rtc_ioctl(unsigned int cmd, unsigned long arg) | ||
284 | { | ||
285 | switch (cmd) { | ||
286 | case RTC_AIE_OFF: | ||
287 | case RTC_AIE_ON: | ||
288 | s3c2410_rtc_setaie((cmd == RTC_AIE_ON) ? 1 : 0); | ||
289 | return 0; | ||
290 | |||
291 | case RTC_PIE_OFF: | ||
292 | case RTC_PIE_ON: | ||
293 | s3c2410_rtc_setpie((cmd == RTC_PIE_ON) ? 1 : 0); | ||
294 | return 0; | ||
295 | |||
296 | case RTC_IRQP_READ: | ||
297 | return put_user(s3c2410_rtc_freq, (unsigned long __user *)arg); | ||
298 | |||
299 | case RTC_IRQP_SET: | ||
300 | if (arg < 1 || arg > 64) | ||
301 | return -EINVAL; | ||
302 | |||
303 | if (!capable(CAP_SYS_RESOURCE)) | ||
304 | return -EACCES; | ||
305 | |||
306 | /* check for power of 2 */ | ||
307 | |||
308 | if ((arg & (arg-1)) != 0) | ||
309 | return -EINVAL; | ||
310 | |||
311 | pr_debug("s3c2410_rtc: setting frequency %ld\n", arg); | ||
312 | |||
313 | s3c2410_rtc_setfreq(arg); | ||
314 | return 0; | ||
315 | |||
316 | case RTC_UIE_ON: | ||
317 | case RTC_UIE_OFF: | ||
318 | return -EINVAL; | ||
319 | } | ||
320 | |||
321 | return -EINVAL; | ||
322 | } | ||
323 | |||
324 | static int s3c2410_rtc_proc(char *buf) | ||
325 | { | ||
326 | unsigned int rtcalm = readb(S3C2410_RTCALM); | ||
327 | unsigned int ticnt = readb (S3C2410_TICNT); | ||
328 | char *p = buf; | ||
329 | |||
330 | p += sprintf(p, "alarm_IRQ\t: %s\n", | ||
331 | (rtcalm & S3C2410_RTCALM_ALMEN) ? "yes" : "no" ); | ||
332 | p += sprintf(p, "periodic_IRQ\t: %s\n", | ||
333 | (ticnt & S3C2410_TICNT_ENABLE) ? "yes" : "no" ); | ||
334 | p += sprintf(p, "periodic_freq\t: %d\n", s3c2410_rtc_freq); | ||
335 | |||
336 | return p - buf; | ||
337 | } | ||
338 | |||
339 | static int s3c2410_rtc_open(void) | ||
340 | { | ||
341 | int ret; | ||
342 | |||
343 | ret = request_irq(s3c2410_rtc_alarmno, s3c2410_rtc_alarmirq, | ||
344 | IRQF_DISABLED, "s3c2410-rtc alarm", NULL); | ||
345 | |||
346 | if (ret) | ||
347 | printk(KERN_ERR "IRQ%d already in use\n", s3c2410_rtc_alarmno); | ||
348 | |||
349 | ret = request_irq(s3c2410_rtc_tickno, s3c2410_rtc_tickirq, | ||
350 | IRQF_DISABLED, "s3c2410-rtc tick", NULL); | ||
351 | |||
352 | if (ret) { | ||
353 | printk(KERN_ERR "IRQ%d already in use\n", s3c2410_rtc_tickno); | ||
354 | goto tick_err; | ||
355 | } | ||
356 | |||
357 | return ret; | ||
358 | |||
359 | tick_err: | ||
360 | free_irq(s3c2410_rtc_alarmno, NULL); | ||
361 | return ret; | ||
362 | } | ||
363 | |||
364 | static void s3c2410_rtc_release(void) | ||
365 | { | ||
366 | /* do not clear AIE here, it may be needed for wake */ | ||
367 | |||
368 | s3c2410_rtc_setpie(0); | ||
369 | free_irq(s3c2410_rtc_alarmno, NULL); | ||
370 | free_irq(s3c2410_rtc_tickno, NULL); | ||
371 | } | ||
372 | |||
373 | static struct rtc_ops s3c2410_rtcops = { | ||
374 | .owner = THIS_MODULE, | ||
375 | .open = s3c2410_rtc_open, | ||
376 | .release = s3c2410_rtc_release, | ||
377 | .ioctl = s3c2410_rtc_ioctl, | ||
378 | .read_time = s3c2410_rtc_gettime, | ||
379 | .set_time = s3c2410_rtc_settime, | ||
380 | .read_alarm = s3c2410_rtc_getalarm, | ||
381 | .set_alarm = s3c2410_rtc_setalarm, | ||
382 | .proc = s3c2410_rtc_proc, | ||
383 | }; | ||
384 | |||
385 | static void s3c2410_rtc_enable(struct platform_device *pdev, int en) | ||
386 | { | ||
387 | unsigned int tmp; | ||
388 | |||
389 | if (s3c2410_rtc_base == NULL) | ||
390 | return; | ||
391 | |||
392 | if (!en) { | ||
393 | tmp = readb(S3C2410_RTCCON); | ||
394 | writeb(tmp & ~S3C2410_RTCCON_RTCEN, S3C2410_RTCCON); | ||
395 | |||
396 | tmp = readb(S3C2410_TICNT); | ||
397 | writeb(tmp & ~S3C2410_TICNT_ENABLE, S3C2410_TICNT); | ||
398 | } else { | ||
399 | /* re-enable the device, and check it is ok */ | ||
400 | |||
401 | if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_RTCEN) == 0){ | ||
402 | dev_info(&pdev->dev, "rtc disabled, re-enabling\n"); | ||
403 | |||
404 | tmp = readb(S3C2410_RTCCON); | ||
405 | writeb(tmp | S3C2410_RTCCON_RTCEN , S3C2410_RTCCON); | ||
406 | } | ||
407 | |||
408 | if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_CNTSEL)){ | ||
409 | dev_info(&pdev->dev, "removing S3C2410_RTCCON_CNTSEL\n"); | ||
410 | |||
411 | tmp = readb(S3C2410_RTCCON); | ||
412 | writeb(tmp& ~S3C2410_RTCCON_CNTSEL , S3C2410_RTCCON); | ||
413 | } | ||
414 | |||
415 | if ((readb(S3C2410_RTCCON) & S3C2410_RTCCON_CLKRST)){ | ||
416 | dev_info(&pdev->dev, "removing S3C2410_RTCCON_CLKRST\n"); | ||
417 | |||
418 | tmp = readb(S3C2410_RTCCON); | ||
419 | writeb(tmp & ~S3C2410_RTCCON_CLKRST, S3C2410_RTCCON); | ||
420 | } | ||
421 | } | ||
422 | } | ||
423 | |||
424 | static int s3c2410_rtc_remove(struct platform_device *dev) | ||
425 | { | ||
426 | unregister_rtc(&s3c2410_rtcops); | ||
427 | |||
428 | s3c2410_rtc_setpie(0); | ||
429 | s3c2410_rtc_setaie(0); | ||
430 | |||
431 | if (s3c2410_rtc_mem != NULL) { | ||
432 | pr_debug("s3c2410_rtc: releasing s3c2410_rtc_mem\n"); | ||
433 | iounmap(s3c2410_rtc_base); | ||
434 | release_resource(s3c2410_rtc_mem); | ||
435 | kfree(s3c2410_rtc_mem); | ||
436 | } | ||
437 | |||
438 | return 0; | ||
439 | } | ||
440 | |||
441 | static int s3c2410_rtc_probe(struct platform_device *pdev) | ||
442 | { | ||
443 | struct resource *res; | ||
444 | int ret; | ||
445 | |||
446 | pr_debug("%s: probe=%p\n", __FUNCTION__, pdev); | ||
447 | |||
448 | /* find the IRQs */ | ||
449 | |||
450 | s3c2410_rtc_tickno = platform_get_irq(pdev, 1); | ||
451 | if (s3c2410_rtc_tickno < 0) { | ||
452 | dev_err(&pdev->dev, "no irq for rtc tick\n"); | ||
453 | return -ENOENT; | ||
454 | } | ||
455 | |||
456 | s3c2410_rtc_alarmno = platform_get_irq(pdev, 0); | ||
457 | if (s3c2410_rtc_alarmno < 0) { | ||
458 | dev_err(&pdev->dev, "no irq for alarm\n"); | ||
459 | return -ENOENT; | ||
460 | } | ||
461 | |||
462 | pr_debug("s3c2410_rtc: tick irq %d, alarm irq %d\n", | ||
463 | s3c2410_rtc_tickno, s3c2410_rtc_alarmno); | ||
464 | |||
465 | /* get the memory region */ | ||
466 | |||
467 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | ||
468 | if (res == NULL) { | ||
469 | dev_err(&pdev->dev, "failed to get memory region resource\n"); | ||
470 | return -ENOENT; | ||
471 | } | ||
472 | |||
473 | s3c2410_rtc_mem = request_mem_region(res->start, res->end-res->start+1, | ||
474 | pdev->name); | ||
475 | |||
476 | if (s3c2410_rtc_mem == NULL) { | ||
477 | dev_err(&pdev->dev, "failed to reserve memory region\n"); | ||
478 | ret = -ENOENT; | ||
479 | goto exit_err; | ||
480 | } | ||
481 | |||
482 | s3c2410_rtc_base = ioremap(res->start, res->end - res->start + 1); | ||
483 | if (s3c2410_rtc_base == NULL) { | ||
484 | dev_err(&pdev->dev, "failed ioremap()\n"); | ||
485 | ret = -EINVAL; | ||
486 | goto exit_err; | ||
487 | } | ||
488 | |||
489 | s3c2410_rtc_mem = res; | ||
490 | pr_debug("s3c2410_rtc_base=%p\n", s3c2410_rtc_base); | ||
491 | |||
492 | pr_debug("s3c2410_rtc: RTCCON=%02x\n", readb(S3C2410_RTCCON)); | ||
493 | |||
494 | /* check to see if everything is setup correctly */ | ||
495 | |||
496 | s3c2410_rtc_enable(pdev, 1); | ||
497 | |||
498 | pr_debug("s3c2410_rtc: RTCCON=%02x\n", readb(S3C2410_RTCCON)); | ||
499 | |||
500 | s3c2410_rtc_setfreq(s3c2410_rtc_freq); | ||
501 | |||
502 | /* register RTC and exit */ | ||
503 | |||
504 | register_rtc(&s3c2410_rtcops); | ||
505 | return 0; | ||
506 | |||
507 | exit_err: | ||
508 | dev_err(&pdev->dev, "error %d during initialisation\n", ret); | ||
509 | |||
510 | return ret; | ||
511 | } | ||
512 | |||
513 | #ifdef CONFIG_PM | ||
514 | |||
515 | /* S3C2410 RTC Power management control */ | ||
516 | |||
517 | static struct timespec s3c2410_rtc_delta; | ||
518 | |||
519 | static int ticnt_save; | ||
520 | |||
521 | static int s3c2410_rtc_suspend(struct platform_device *pdev, pm_message_t state) | ||
522 | { | ||
523 | struct rtc_time tm; | ||
524 | struct timespec time; | ||
525 | |||
526 | time.tv_nsec = 0; | ||
527 | |||
528 | /* save TICNT for anyone using periodic interrupts */ | ||
529 | |||
530 | ticnt_save = readb(S3C2410_TICNT); | ||
531 | |||
532 | /* calculate time delta for suspend */ | ||
533 | |||
534 | s3c2410_rtc_gettime(&tm); | ||
535 | rtc_tm_to_time(&tm, &time.tv_sec); | ||
536 | save_time_delta(&s3c2410_rtc_delta, &time); | ||
537 | s3c2410_rtc_enable(pdev, 0); | ||
538 | |||
539 | return 0; | ||
540 | } | ||
541 | |||
542 | static int s3c2410_rtc_resume(struct platform_device *pdev) | ||
543 | { | ||
544 | struct rtc_time tm; | ||
545 | struct timespec time; | ||
546 | |||
547 | time.tv_nsec = 0; | ||
548 | |||
549 | s3c2410_rtc_enable(pdev, 1); | ||
550 | s3c2410_rtc_gettime(&tm); | ||
551 | rtc_tm_to_time(&tm, &time.tv_sec); | ||
552 | restore_time_delta(&s3c2410_rtc_delta, &time); | ||
553 | |||
554 | writeb(ticnt_save, S3C2410_TICNT); | ||
555 | return 0; | ||
556 | } | ||
557 | #else | ||
558 | #define s3c2410_rtc_suspend NULL | ||
559 | #define s3c2410_rtc_resume NULL | ||
560 | #endif | ||
561 | |||
562 | static struct platform_driver s3c2410_rtcdrv = { | ||
563 | .probe = s3c2410_rtc_probe, | ||
564 | .remove = s3c2410_rtc_remove, | ||
565 | .suspend = s3c2410_rtc_suspend, | ||
566 | .resume = s3c2410_rtc_resume, | ||
567 | .driver = { | ||
568 | .name = "s3c2410-rtc", | ||
569 | .owner = THIS_MODULE, | ||
570 | }, | ||
571 | }; | ||
572 | |||
573 | static char __initdata banner[] = "S3C2410 RTC, (c) 2004 Simtec Electronics\n"; | ||
574 | |||
575 | static int __init s3c2410_rtc_init(void) | ||
576 | { | ||
577 | printk(banner); | ||
578 | return platform_driver_register(&s3c2410_rtcdrv); | ||
579 | } | ||
580 | |||
581 | static void __exit s3c2410_rtc_exit(void) | ||
582 | { | ||
583 | platform_driver_unregister(&s3c2410_rtcdrv); | ||
584 | } | ||
585 | |||
586 | module_init(s3c2410_rtc_init); | ||
587 | module_exit(s3c2410_rtc_exit); | ||
588 | |||
589 | MODULE_DESCRIPTION("S3C24XX RTC Driver"); | ||
590 | MODULE_AUTHOR("Ben Dooks, <ben@simtec.co.uk>"); | ||
591 | MODULE_LICENSE("GPL"); | ||