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-rw-r--r--arch/unicore32/kernel/Makefile1
-rw-r--r--arch/unicore32/kernel/rtc.c371
-rw-r--r--arch/unicore32/kernel/vmlinux.lds.S2
3 files changed, 1 insertions, 373 deletions
diff --git a/arch/unicore32/kernel/Makefile b/arch/unicore32/kernel/Makefile
index ec23a2fb2f50..aeb0f181568e 100644
--- a/arch/unicore32/kernel/Makefile
+++ b/arch/unicore32/kernel/Makefile
@@ -16,7 +16,6 @@ obj-$(CONFIG_UNICORE_FPU_F64) += fpu-ucf64.o
16obj-$(CONFIG_ARCH_PUV3) += clock.o irq.o time.o 16obj-$(CONFIG_ARCH_PUV3) += clock.o irq.o time.o
17 17
18obj-$(CONFIG_PUV3_GPIO) += gpio.o 18obj-$(CONFIG_PUV3_GPIO) += gpio.o
19obj-$(CONFIG_PUV3_RTC) += rtc.o
20obj-$(CONFIG_PUV3_PWM) += pwm.o 19obj-$(CONFIG_PUV3_PWM) += pwm.o
21obj-$(CONFIG_PUV3_PM) += pm.o sleep.o 20obj-$(CONFIG_PUV3_PM) += pm.o sleep.o
22obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate_asm.o 21obj-$(CONFIG_HIBERNATION) += hibernate.o hibernate_asm.o
diff --git a/arch/unicore32/kernel/rtc.c b/arch/unicore32/kernel/rtc.c
deleted file mode 100644
index 8cad70b3302c..000000000000
--- a/arch/unicore32/kernel/rtc.c
+++ /dev/null
@@ -1,371 +0,0 @@
1/*
2 * linux/arch/unicore32/kernel/rtc.c
3 *
4 * Code specific to PKUnity SoC and UniCore ISA
5 *
6 * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
7 * Copyright (C) 2001-2010 Guan Xuetao
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/module.h>
15#include <linux/fs.h>
16#include <linux/string.h>
17#include <linux/init.h>
18#include <linux/platform_device.h>
19#include <linux/interrupt.h>
20#include <linux/rtc.h>
21#include <linux/bcd.h>
22#include <linux/clk.h>
23#include <linux/log2.h>
24#include <linux/slab.h>
25#include <linux/uaccess.h>
26#include <linux/io.h>
27
28#include <asm/irq.h>
29#include <mach/hardware.h>
30
31static struct resource *puv3_rtc_mem;
32
33static int puv3_rtc_alarmno = IRQ_RTCAlarm;
34static int puv3_rtc_tickno = IRQ_RTC;
35
36static DEFINE_SPINLOCK(puv3_rtc_pie_lock);
37
38/* IRQ Handlers */
39
40static irqreturn_t puv3_rtc_alarmirq(int irq, void *id)
41{
42 struct rtc_device *rdev = id;
43
44 writel(readl(RTC_RTSR) | RTC_RTSR_AL, RTC_RTSR);
45 rtc_update_irq(rdev, 1, RTC_AF | RTC_IRQF);
46 return IRQ_HANDLED;
47}
48
49static irqreturn_t puv3_rtc_tickirq(int irq, void *id)
50{
51 struct rtc_device *rdev = id;
52
53 writel(readl(RTC_RTSR) | RTC_RTSR_HZ, RTC_RTSR);
54 rtc_update_irq(rdev, 1, RTC_PF | RTC_IRQF);
55 return IRQ_HANDLED;
56}
57
58/* Update control registers */
59static void puv3_rtc_setaie(int to)
60{
61 unsigned int tmp;
62
63 pr_debug("%s: aie=%d\n", __func__, to);
64
65 tmp = readl(RTC_RTSR) & ~RTC_RTSR_ALE;
66
67 if (to)
68 tmp |= RTC_RTSR_ALE;
69
70 writel(tmp, RTC_RTSR);
71}
72
73static int puv3_rtc_setpie(struct device *dev, int enabled)
74{
75 unsigned int tmp;
76
77 pr_debug("%s: pie=%d\n", __func__, enabled);
78
79 spin_lock_irq(&puv3_rtc_pie_lock);
80 tmp = readl(RTC_RTSR) & ~RTC_RTSR_HZE;
81
82 if (enabled)
83 tmp |= RTC_RTSR_HZE;
84
85 writel(tmp, RTC_RTSR);
86 spin_unlock_irq(&puv3_rtc_pie_lock);
87
88 return 0;
89}
90
91/* Time read/write */
92
93static int puv3_rtc_gettime(struct device *dev, struct rtc_time *rtc_tm)
94{
95 rtc_time_to_tm(readl(RTC_RCNR), rtc_tm);
96
97 pr_debug("read time %02x.%02x.%02x %02x/%02x/%02x\n",
98 rtc_tm->tm_year, rtc_tm->tm_mon, rtc_tm->tm_mday,
99 rtc_tm->tm_hour, rtc_tm->tm_min, rtc_tm->tm_sec);
100
101 return 0;
102}
103
104static int puv3_rtc_settime(struct device *dev, struct rtc_time *tm)
105{
106 unsigned long rtc_count = 0;
107
108 pr_debug("set time %02d.%02d.%02d %02d/%02d/%02d\n",
109 tm->tm_year, tm->tm_mon, tm->tm_mday,
110 tm->tm_hour, tm->tm_min, tm->tm_sec);
111
112 rtc_tm_to_time(tm, &rtc_count);
113 writel(rtc_count, RTC_RCNR);
114
115 return 0;
116}
117
118static int puv3_rtc_getalarm(struct device *dev, struct rtc_wkalrm *alrm)
119{
120 struct rtc_time *alm_tm = &alrm->time;
121
122 rtc_time_to_tm(readl(RTC_RTAR), alm_tm);
123
124 alrm->enabled = readl(RTC_RTSR) & RTC_RTSR_ALE;
125
126 pr_debug("read alarm %02x %02x.%02x.%02x %02x/%02x/%02x\n",
127 alrm->enabled,
128 alm_tm->tm_year, alm_tm->tm_mon, alm_tm->tm_mday,
129 alm_tm->tm_hour, alm_tm->tm_min, alm_tm->tm_sec);
130
131 return 0;
132}
133
134static int puv3_rtc_setalarm(struct device *dev, struct rtc_wkalrm *alrm)
135{
136 struct rtc_time *tm = &alrm->time;
137 unsigned long rtcalarm_count = 0;
138
139 pr_debug("puv3_rtc_setalarm: %d, %02x/%02x/%02x %02x.%02x.%02x\n",
140 alrm->enabled,
141 tm->tm_mday & 0xff, tm->tm_mon & 0xff, tm->tm_year & 0xff,
142 tm->tm_hour & 0xff, tm->tm_min & 0xff, tm->tm_sec);
143
144 rtc_tm_to_time(tm, &rtcalarm_count);
145 writel(rtcalarm_count, RTC_RTAR);
146
147 puv3_rtc_setaie(alrm->enabled);
148
149 if (alrm->enabled)
150 enable_irq_wake(puv3_rtc_alarmno);
151 else
152 disable_irq_wake(puv3_rtc_alarmno);
153
154 return 0;
155}
156
157static int puv3_rtc_proc(struct device *dev, struct seq_file *seq)
158{
159 seq_printf(seq, "periodic_IRQ\t: %s\n",
160 (readl(RTC_RTSR) & RTC_RTSR_HZE) ? "yes" : "no");
161 return 0;
162}
163
164static int puv3_rtc_open(struct device *dev)
165{
166 struct platform_device *pdev = to_platform_device(dev);
167 struct rtc_device *rtc_dev = platform_get_drvdata(pdev);
168 int ret;
169
170 ret = request_irq(puv3_rtc_alarmno, puv3_rtc_alarmirq,
171 IRQF_DISABLED, "pkunity-rtc alarm", rtc_dev);
172
173 if (ret) {
174 dev_err(dev, "IRQ%d error %d\n", puv3_rtc_alarmno, ret);
175 return ret;
176 }
177
178 ret = request_irq(puv3_rtc_tickno, puv3_rtc_tickirq,
179 IRQF_DISABLED, "pkunity-rtc tick", rtc_dev);
180
181 if (ret) {
182 dev_err(dev, "IRQ%d error %d\n", puv3_rtc_tickno, ret);
183 goto tick_err;
184 }
185
186 return ret;
187
188 tick_err:
189 free_irq(puv3_rtc_alarmno, rtc_dev);
190 return ret;
191}
192
193static void puv3_rtc_release(struct device *dev)
194{
195 struct platform_device *pdev = to_platform_device(dev);
196 struct rtc_device *rtc_dev = platform_get_drvdata(pdev);
197
198 /* do not clear AIE here, it may be needed for wake */
199
200 puv3_rtc_setpie(dev, 0);
201 free_irq(puv3_rtc_alarmno, rtc_dev);
202 free_irq(puv3_rtc_tickno, rtc_dev);
203}
204
205static const struct rtc_class_ops puv3_rtcops = {
206 .open = puv3_rtc_open,
207 .release = puv3_rtc_release,
208 .read_time = puv3_rtc_gettime,
209 .set_time = puv3_rtc_settime,
210 .read_alarm = puv3_rtc_getalarm,
211 .set_alarm = puv3_rtc_setalarm,
212 .proc = puv3_rtc_proc,
213};
214
215static void puv3_rtc_enable(struct platform_device *pdev, int en)
216{
217 if (!en) {
218 writel(readl(RTC_RTSR) & ~RTC_RTSR_HZE, RTC_RTSR);
219 } else {
220 /* re-enable the device, and check it is ok */
221
222 if ((readl(RTC_RTSR) & RTC_RTSR_HZE) == 0) {
223 dev_info(&pdev->dev, "rtc disabled, re-enabling\n");
224 writel(readl(RTC_RTSR) | RTC_RTSR_HZE, RTC_RTSR);
225 }
226 }
227}
228
229static int puv3_rtc_remove(struct platform_device *dev)
230{
231 struct rtc_device *rtc = platform_get_drvdata(dev);
232
233 platform_set_drvdata(dev, NULL);
234 rtc_device_unregister(rtc);
235
236 puv3_rtc_setpie(&dev->dev, 0);
237 puv3_rtc_setaie(0);
238
239 release_resource(puv3_rtc_mem);
240 kfree(puv3_rtc_mem);
241
242 return 0;
243}
244
245static int puv3_rtc_probe(struct platform_device *pdev)
246{
247 struct rtc_device *rtc;
248 struct resource *res;
249 int ret;
250
251 pr_debug("%s: probe=%p\n", __func__, pdev);
252
253 /* find the IRQs */
254
255 puv3_rtc_tickno = platform_get_irq(pdev, 1);
256 if (puv3_rtc_tickno < 0) {
257 dev_err(&pdev->dev, "no irq for rtc tick\n");
258 return -ENOENT;
259 }
260
261 puv3_rtc_alarmno = platform_get_irq(pdev, 0);
262 if (puv3_rtc_alarmno < 0) {
263 dev_err(&pdev->dev, "no irq for alarm\n");
264 return -ENOENT;
265 }
266
267 pr_debug("PKUnity_rtc: tick irq %d, alarm irq %d\n",
268 puv3_rtc_tickno, puv3_rtc_alarmno);
269
270 /* get the memory region */
271
272 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
273 if (res == NULL) {
274 dev_err(&pdev->dev, "failed to get memory region resource\n");
275 return -ENOENT;
276 }
277
278 puv3_rtc_mem = request_mem_region(res->start,
279 res->end-res->start+1,
280 pdev->name);
281
282 if (puv3_rtc_mem == NULL) {
283 dev_err(&pdev->dev, "failed to reserve memory region\n");
284 ret = -ENOENT;
285 goto err_nores;
286 }
287
288 puv3_rtc_enable(pdev, 1);
289
290 /* register RTC and exit */
291
292 rtc = rtc_device_register("pkunity", &pdev->dev, &puv3_rtcops,
293 THIS_MODULE);
294
295 if (IS_ERR(rtc)) {
296 dev_err(&pdev->dev, "cannot attach rtc\n");
297 ret = PTR_ERR(rtc);
298 goto err_nortc;
299 }
300
301 /* platform setup code should have handled this; sigh */
302 if (!device_can_wakeup(&pdev->dev))
303 device_init_wakeup(&pdev->dev, 1);
304
305 platform_set_drvdata(pdev, rtc);
306 return 0;
307
308 err_nortc:
309 puv3_rtc_enable(pdev, 0);
310 release_resource(puv3_rtc_mem);
311
312 err_nores:
313 return ret;
314}
315
316#ifdef CONFIG_PM
317
318/* RTC Power management control */
319
320static int ticnt_save;
321
322static int puv3_rtc_suspend(struct platform_device *pdev, pm_message_t state)
323{
324 /* save RTAR for anyone using periodic interrupts */
325 ticnt_save = readl(RTC_RTAR);
326 puv3_rtc_enable(pdev, 0);
327 return 0;
328}
329
330static int puv3_rtc_resume(struct platform_device *pdev)
331{
332 puv3_rtc_enable(pdev, 1);
333 writel(ticnt_save, RTC_RTAR);
334 return 0;
335}
336#else
337#define puv3_rtc_suspend NULL
338#define puv3_rtc_resume NULL
339#endif
340
341static struct platform_driver puv3_rtcdrv = {
342 .probe = puv3_rtc_probe,
343 .remove = __devexit_p(puv3_rtc_remove),
344 .suspend = puv3_rtc_suspend,
345 .resume = puv3_rtc_resume,
346 .driver = {
347 .name = "PKUnity-v3-RTC",
348 .owner = THIS_MODULE,
349 }
350};
351
352static char __initdata banner[] = "PKUnity-v3 RTC, (c) 2009 PKUnity Co.\n";
353
354static int __init puv3_rtc_init(void)
355{
356 printk(banner);
357 return platform_driver_register(&puv3_rtcdrv);
358}
359
360static void __exit puv3_rtc_exit(void)
361{
362 platform_driver_unregister(&puv3_rtcdrv);
363}
364
365module_init(puv3_rtc_init);
366module_exit(puv3_rtc_exit);
367
368MODULE_DESCRIPTION("RTC Driver for the PKUnity v3 chip");
369MODULE_AUTHOR("Hu Dongliang");
370MODULE_LICENSE("GPL v2");
371
diff --git a/arch/unicore32/kernel/vmlinux.lds.S b/arch/unicore32/kernel/vmlinux.lds.S
index 9bf7f7af52c5..77e407e49a63 100644
--- a/arch/unicore32/kernel/vmlinux.lds.S
+++ b/arch/unicore32/kernel/vmlinux.lds.S
@@ -30,7 +30,7 @@ SECTIONS
30 HEAD_TEXT_SECTION 30 HEAD_TEXT_SECTION
31 INIT_TEXT_SECTION(PAGE_SIZE) 31 INIT_TEXT_SECTION(PAGE_SIZE)
32 INIT_DATA_SECTION(16) 32 INIT_DATA_SECTION(16)
33 PERCPU(L1_CACHE_BYTES, PAGE_SIZE) 33 PERCPU_SECTION(L1_CACHE_BYTES)
34 __init_end = .; 34 __init_end = .;
35 35
36 _stext = .; 36 _stext = .;
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-11 14:12:09 -0500