diff options
Diffstat (limited to 'drivers/rtc')
-rw-r--r-- | drivers/rtc/rtc-bfin.c | 48 |
1 files changed, 22 insertions, 26 deletions
diff --git a/drivers/rtc/rtc-bfin.c b/drivers/rtc/rtc-bfin.c index 343f2849106d..b14a9c46f3b2 100644 --- a/drivers/rtc/rtc-bfin.c +++ b/drivers/rtc/rtc-bfin.c | |||
@@ -45,8 +45,7 @@ | |||
45 | 45 | ||
46 | #include <asm/blackfin.h> | 46 | #include <asm/blackfin.h> |
47 | 47 | ||
48 | #define stamp(fmt, args...) pr_debug("%s:%i: " fmt "\n", __func__, __LINE__, ## args) | 48 | #define dev_dbg_stamp(dev) dev_dbg(dev, "%s:%i: here i am\n", __func__, __LINE__) |
49 | #define stampit() stamp("here i am") | ||
50 | 49 | ||
51 | struct bfin_rtc { | 50 | struct bfin_rtc { |
52 | struct rtc_device *rtc_dev; | 51 | struct rtc_device *rtc_dev; |
@@ -120,7 +119,6 @@ static inline void rtc_bfin_to_tm(u32 rtc_bfin, struct rtc_time *tm) | |||
120 | */ | 119 | */ |
121 | static void rtc_bfin_sync_pending(void) | 120 | static void rtc_bfin_sync_pending(void) |
122 | { | 121 | { |
123 | stampit(); | ||
124 | while (!(bfin_read_RTC_ISTAT() & RTC_ISTAT_WRITE_COMPLETE)) { | 122 | while (!(bfin_read_RTC_ISTAT() & RTC_ISTAT_WRITE_COMPLETE)) { |
125 | if (!(bfin_read_RTC_ISTAT() & RTC_ISTAT_WRITE_PENDING)) | 123 | if (!(bfin_read_RTC_ISTAT() & RTC_ISTAT_WRITE_PENDING)) |
126 | break; | 124 | break; |
@@ -128,8 +126,9 @@ static void rtc_bfin_sync_pending(void) | |||
128 | bfin_write_RTC_ISTAT(RTC_ISTAT_WRITE_COMPLETE); | 126 | bfin_write_RTC_ISTAT(RTC_ISTAT_WRITE_COMPLETE); |
129 | } | 127 | } |
130 | 128 | ||
131 | static void rtc_bfin_reset(struct bfin_rtc *rtc) | 129 | static void rtc_bfin_reset(struct device *dev) |
132 | { | 130 | { |
131 | struct bfin_rtc *rtc = dev_get_drvdata(dev); | ||
133 | /* Initialize the RTC. Enable pre-scaler to scale RTC clock | 132 | /* Initialize the RTC. Enable pre-scaler to scale RTC clock |
134 | * to 1Hz and clear interrupt/status registers. */ | 133 | * to 1Hz and clear interrupt/status registers. */ |
135 | spin_lock_irq(&rtc->lock); | 134 | spin_lock_irq(&rtc->lock); |
@@ -149,7 +148,7 @@ static irqreturn_t bfin_rtc_interrupt(int irq, void *dev_id) | |||
149 | unsigned long events = 0; | 148 | unsigned long events = 0; |
150 | u16 rtc_istat; | 149 | u16 rtc_istat; |
151 | 150 | ||
152 | stampit(); | 151 | dev_dbg_stamp(dev); |
153 | 152 | ||
154 | spin_lock_irq(&rtc->lock); | 153 | spin_lock_irq(&rtc->lock); |
155 | 154 | ||
@@ -180,10 +179,9 @@ static irqreturn_t bfin_rtc_interrupt(int irq, void *dev_id) | |||
180 | 179 | ||
181 | static int bfin_rtc_open(struct device *dev) | 180 | static int bfin_rtc_open(struct device *dev) |
182 | { | 181 | { |
183 | struct bfin_rtc *rtc = dev_get_drvdata(dev); | ||
184 | int ret; | 182 | int ret; |
185 | 183 | ||
186 | stampit(); | 184 | dev_dbg_stamp(dev); |
187 | 185 | ||
188 | ret = request_irq(IRQ_RTC, bfin_rtc_interrupt, IRQF_DISABLED, "rtc-bfin", dev); | 186 | ret = request_irq(IRQ_RTC, bfin_rtc_interrupt, IRQF_DISABLED, "rtc-bfin", dev); |
189 | if (unlikely(ret)) { | 187 | if (unlikely(ret)) { |
@@ -191,16 +189,15 @@ static int bfin_rtc_open(struct device *dev) | |||
191 | return ret; | 189 | return ret; |
192 | } | 190 | } |
193 | 191 | ||
194 | rtc_bfin_reset(rtc); | 192 | rtc_bfin_reset(dev); |
195 | 193 | ||
196 | return ret; | 194 | return ret; |
197 | } | 195 | } |
198 | 196 | ||
199 | static void bfin_rtc_release(struct device *dev) | 197 | static void bfin_rtc_release(struct device *dev) |
200 | { | 198 | { |
201 | struct bfin_rtc *rtc = dev_get_drvdata(dev); | 199 | dev_dbg_stamp(dev); |
202 | stampit(); | 200 | rtc_bfin_reset(dev); |
203 | rtc_bfin_reset(rtc); | ||
204 | free_irq(IRQ_RTC, dev); | 201 | free_irq(IRQ_RTC, dev); |
205 | } | 202 | } |
206 | 203 | ||
@@ -208,11 +205,11 @@ static int bfin_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long ar | |||
208 | { | 205 | { |
209 | struct bfin_rtc *rtc = dev_get_drvdata(dev); | 206 | struct bfin_rtc *rtc = dev_get_drvdata(dev); |
210 | 207 | ||
211 | stampit(); | 208 | dev_dbg_stamp(dev); |
212 | 209 | ||
213 | switch (cmd) { | 210 | switch (cmd) { |
214 | case RTC_PIE_ON: | 211 | case RTC_PIE_ON: |
215 | stampit(); | 212 | dev_dbg_stamp(dev); |
216 | spin_lock_irq(&rtc->lock); | 213 | spin_lock_irq(&rtc->lock); |
217 | rtc_bfin_sync_pending(); | 214 | rtc_bfin_sync_pending(); |
218 | bfin_write_RTC_ISTAT(RTC_ISTAT_STOPWATCH); | 215 | bfin_write_RTC_ISTAT(RTC_ISTAT_STOPWATCH); |
@@ -221,7 +218,7 @@ static int bfin_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long ar | |||
221 | spin_unlock_irq(&rtc->lock); | 218 | spin_unlock_irq(&rtc->lock); |
222 | return 0; | 219 | return 0; |
223 | case RTC_PIE_OFF: | 220 | case RTC_PIE_OFF: |
224 | stampit(); | 221 | dev_dbg_stamp(dev); |
225 | spin_lock_irq(&rtc->lock); | 222 | spin_lock_irq(&rtc->lock); |
226 | rtc_bfin_sync_pending(); | 223 | rtc_bfin_sync_pending(); |
227 | bfin_write_RTC_SWCNT(0); | 224 | bfin_write_RTC_SWCNT(0); |
@@ -230,7 +227,7 @@ static int bfin_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long ar | |||
230 | return 0; | 227 | return 0; |
231 | 228 | ||
232 | case RTC_UIE_ON: | 229 | case RTC_UIE_ON: |
233 | stampit(); | 230 | dev_dbg_stamp(dev); |
234 | spin_lock_irq(&rtc->lock); | 231 | spin_lock_irq(&rtc->lock); |
235 | rtc_bfin_sync_pending(); | 232 | rtc_bfin_sync_pending(); |
236 | bfin_write_RTC_ISTAT(RTC_ISTAT_SEC); | 233 | bfin_write_RTC_ISTAT(RTC_ISTAT_SEC); |
@@ -238,7 +235,7 @@ static int bfin_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long ar | |||
238 | spin_unlock_irq(&rtc->lock); | 235 | spin_unlock_irq(&rtc->lock); |
239 | return 0; | 236 | return 0; |
240 | case RTC_UIE_OFF: | 237 | case RTC_UIE_OFF: |
241 | stampit(); | 238 | dev_dbg_stamp(dev); |
242 | spin_lock_irq(&rtc->lock); | 239 | spin_lock_irq(&rtc->lock); |
243 | rtc_bfin_sync_pending(); | 240 | rtc_bfin_sync_pending(); |
244 | bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() & ~RTC_ISTAT_SEC); | 241 | bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() & ~RTC_ISTAT_SEC); |
@@ -250,7 +247,7 @@ static int bfin_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long ar | |||
250 | u16 which_alarm; | 247 | u16 which_alarm; |
251 | int ret = 0; | 248 | int ret = 0; |
252 | 249 | ||
253 | stampit(); | 250 | dev_dbg_stamp(dev); |
254 | 251 | ||
255 | spin_lock_irq(&rtc->lock); | 252 | spin_lock_irq(&rtc->lock); |
256 | 253 | ||
@@ -278,7 +275,7 @@ static int bfin_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long ar | |||
278 | return ret; | 275 | return ret; |
279 | } | 276 | } |
280 | case RTC_AIE_OFF: | 277 | case RTC_AIE_OFF: |
281 | stampit(); | 278 | dev_dbg_stamp(dev); |
282 | spin_lock_irq(&rtc->lock); | 279 | spin_lock_irq(&rtc->lock); |
283 | rtc_bfin_sync_pending(); | 280 | rtc_bfin_sync_pending(); |
284 | bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() & ~(RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY)); | 281 | bfin_write_RTC_ICTL(bfin_read_RTC_ICTL() & ~(RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY)); |
@@ -293,7 +290,7 @@ static int bfin_rtc_read_time(struct device *dev, struct rtc_time *tm) | |||
293 | { | 290 | { |
294 | struct bfin_rtc *rtc = dev_get_drvdata(dev); | 291 | struct bfin_rtc *rtc = dev_get_drvdata(dev); |
295 | 292 | ||
296 | stampit(); | 293 | dev_dbg_stamp(dev); |
297 | 294 | ||
298 | spin_lock_irq(&rtc->lock); | 295 | spin_lock_irq(&rtc->lock); |
299 | rtc_bfin_sync_pending(); | 296 | rtc_bfin_sync_pending(); |
@@ -309,7 +306,7 @@ static int bfin_rtc_set_time(struct device *dev, struct rtc_time *tm) | |||
309 | int ret; | 306 | int ret; |
310 | unsigned long now; | 307 | unsigned long now; |
311 | 308 | ||
312 | stampit(); | 309 | dev_dbg_stamp(dev); |
313 | 310 | ||
314 | spin_lock_irq(&rtc->lock); | 311 | spin_lock_irq(&rtc->lock); |
315 | 312 | ||
@@ -327,7 +324,7 @@ static int bfin_rtc_set_time(struct device *dev, struct rtc_time *tm) | |||
327 | static int bfin_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) | 324 | static int bfin_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
328 | { | 325 | { |
329 | struct bfin_rtc *rtc = dev_get_drvdata(dev); | 326 | struct bfin_rtc *rtc = dev_get_drvdata(dev); |
330 | stampit(); | 327 | dev_dbg_stamp(dev); |
331 | memcpy(&alrm->time, &rtc->rtc_alarm, sizeof(struct rtc_time)); | 328 | memcpy(&alrm->time, &rtc->rtc_alarm, sizeof(struct rtc_time)); |
332 | alrm->pending = !!(bfin_read_RTC_ICTL() & (RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY)); | 329 | alrm->pending = !!(bfin_read_RTC_ICTL() & (RTC_ISTAT_ALARM | RTC_ISTAT_ALARM_DAY)); |
333 | return 0; | 330 | return 0; |
@@ -336,7 +333,7 @@ static int bfin_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) | |||
336 | static int bfin_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) | 333 | static int bfin_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) |
337 | { | 334 | { |
338 | struct bfin_rtc *rtc = dev_get_drvdata(dev); | 335 | struct bfin_rtc *rtc = dev_get_drvdata(dev); |
339 | stampit(); | 336 | dev_dbg_stamp(dev); |
340 | memcpy(&rtc->rtc_alarm, &alrm->time, sizeof(struct rtc_time)); | 337 | memcpy(&rtc->rtc_alarm, &alrm->time, sizeof(struct rtc_time)); |
341 | return 0; | 338 | return 0; |
342 | } | 339 | } |
@@ -345,7 +342,7 @@ static int bfin_rtc_proc(struct device *dev, struct seq_file *seq) | |||
345 | { | 342 | { |
346 | #define yesno(x) ((x) ? "yes" : "no") | 343 | #define yesno(x) ((x) ? "yes" : "no") |
347 | u16 ictl = bfin_read_RTC_ICTL(); | 344 | u16 ictl = bfin_read_RTC_ICTL(); |
348 | stampit(); | 345 | dev_dbg_stamp(dev); |
349 | seq_printf(seq, | 346 | seq_printf(seq, |
350 | "alarm_IRQ\t: %s\n" | 347 | "alarm_IRQ\t: %s\n" |
351 | "wkalarm_IRQ\t: %s\n" | 348 | "wkalarm_IRQ\t: %s\n" |
@@ -369,7 +366,7 @@ static int bfin_rtc_proc(struct device *dev, struct seq_file *seq) | |||
369 | */ | 366 | */ |
370 | static int bfin_irq_set_freq(struct device *dev, int freq) | 367 | static int bfin_irq_set_freq(struct device *dev, int freq) |
371 | { | 368 | { |
372 | stampit(); | 369 | dev_dbg_stamp(dev); |
373 | return -ENOTTY; | 370 | return -ENOTTY; |
374 | } | 371 | } |
375 | 372 | ||
@@ -390,7 +387,7 @@ static int __devinit bfin_rtc_probe(struct platform_device *pdev) | |||
390 | struct bfin_rtc *rtc; | 387 | struct bfin_rtc *rtc; |
391 | int ret = 0; | 388 | int ret = 0; |
392 | 389 | ||
393 | stampit(); | 390 | dev_dbg_stamp(&pdev->dev); |
394 | 391 | ||
395 | rtc = kzalloc(sizeof(*rtc), GFP_KERNEL); | 392 | rtc = kzalloc(sizeof(*rtc), GFP_KERNEL); |
396 | if (unlikely(!rtc)) | 393 | if (unlikely(!rtc)) |
@@ -436,7 +433,6 @@ static struct platform_driver bfin_rtc_driver = { | |||
436 | 433 | ||
437 | static int __init bfin_rtc_init(void) | 434 | static int __init bfin_rtc_init(void) |
438 | { | 435 | { |
439 | stampit(); | ||
440 | return platform_driver_register(&bfin_rtc_driver); | 436 | return platform_driver_register(&bfin_rtc_driver); |
441 | } | 437 | } |
442 | 438 | ||