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authorLinus Torvalds <torvalds@linux-foundation.org>2008-12-30 20:36:49 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-30 20:36:49 -0500
commit14a3c4ab0e58d143c7928c9eb2f2610205e13bf2 (patch)
tree885992999d7a1a2fd3586efcf32ebcbcbc3a72aa /drivers/rtc
parent1af237a099a3b8ff56aa384f605c6a68af7bf288 (diff)
parent47992cbdaef2f18a47871b2ed01ad27f568c8b73 (diff)
Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (407 commits) [ARM] pxafb: add support for overlay1 and overlay2 as framebuffer devices [ARM] pxafb: cleanup of the timing checking code [ARM] pxafb: cleanup of the color format manipulation code [ARM] pxafb: add palette format support for LCCR4_PAL_FOR_3 [ARM] pxafb: add support for FBIOPAN_DISPLAY by dma braching [ARM] pxafb: allow pxafb_set_par() to start from arbitrary yoffset [ARM] pxafb: allow video memory size to be configurable [ARM] pxa: add document on the MFP design and how to use it [ARM] sa1100_wdt: don't assume CLOCK_TICK_RATE to be a constant [ARM] rtc-sa1100: don't assume CLOCK_TICK_RATE to be a constant [ARM] pxa/tavorevb: update board support (smartpanel LCD + keypad) [ARM] pxa: Update eseries defconfig [ARM] 5352/1: add w90p910-plat config file [ARM] s3c: S3C options should depend on PLAT_S3C [ARM] mv78xx0: implement GPIO and GPIO interrupt support [ARM] Kirkwood: implement GPIO and GPIO interrupt support [ARM] Orion: share GPIO IRQ handling code [ARM] Orion: share GPIO handling code [ARM] s3c: define __io using the typesafe version [ARM] S3C64XX: Ensure CPU_V6 is selected ...
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-at91sam9.c1
-rw-r--r--drivers/rtc/rtc-s3c.c2
-rw-r--r--drivers/rtc/rtc-sa1100.c12
3 files changed, 9 insertions, 6 deletions
diff --git a/drivers/rtc/rtc-at91sam9.c b/drivers/rtc/rtc-at91sam9.c
index 2133f37906f2..d5e4e637ddec 100644
--- a/drivers/rtc/rtc-at91sam9.c
+++ b/drivers/rtc/rtc-at91sam9.c
@@ -21,6 +21,7 @@
21 21
22#include <mach/board.h> 22#include <mach/board.h>
23#include <mach/at91_rtt.h> 23#include <mach/at91_rtt.h>
24#include <mach/cpu.h>
24 25
25 26
26/* 27/*
diff --git a/drivers/rtc/rtc-s3c.c b/drivers/rtc/rtc-s3c.c
index f59277bbedaa..7a568beba3f0 100644
--- a/drivers/rtc/rtc-s3c.c
+++ b/drivers/rtc/rtc-s3c.c
@@ -26,7 +26,7 @@
26#include <asm/uaccess.h> 26#include <asm/uaccess.h>
27#include <asm/io.h> 27#include <asm/io.h>
28#include <asm/irq.h> 28#include <asm/irq.h>
29#include <asm/plat-s3c/regs-rtc.h> 29#include <plat/regs-rtc.h>
30 30
31/* I have yet to find an S3C implementation with more than one 31/* I have yet to find an S3C implementation with more than one
32 * of these rtc blocks in */ 32 * of these rtc blocks in */
diff --git a/drivers/rtc/rtc-sa1100.c b/drivers/rtc/rtc-sa1100.c
index 66a9bb85bbe8..d26a5f82aaba 100644
--- a/drivers/rtc/rtc-sa1100.c
+++ b/drivers/rtc/rtc-sa1100.c
@@ -38,11 +38,11 @@
38#include <mach/pxa-regs.h> 38#include <mach/pxa-regs.h>
39#endif 39#endif
40 40
41#define TIMER_FREQ CLOCK_TICK_RATE
42#define RTC_DEF_DIVIDER 32768 - 1 41#define RTC_DEF_DIVIDER 32768 - 1
43#define RTC_DEF_TRIM 0 42#define RTC_DEF_TRIM 0
44 43
45static unsigned long rtc_freq = 1024; 44static unsigned long rtc_freq = 1024;
45static unsigned long timer_freq;
46static struct rtc_time rtc_alarm; 46static struct rtc_time rtc_alarm;
47static DEFINE_SPINLOCK(sa1100_rtc_lock); 47static DEFINE_SPINLOCK(sa1100_rtc_lock);
48 48
@@ -157,7 +157,7 @@ static irqreturn_t timer1_interrupt(int irq, void *dev_id)
157 rtc_update_irq(rtc, rtc_timer1_count, RTC_PF | RTC_IRQF); 157 rtc_update_irq(rtc, rtc_timer1_count, RTC_PF | RTC_IRQF);
158 158
159 if (rtc_timer1_count == 1) 159 if (rtc_timer1_count == 1)
160 rtc_timer1_count = (rtc_freq * ((1<<30)/(TIMER_FREQ>>2))); 160 rtc_timer1_count = (rtc_freq * ((1 << 30) / (timer_freq >> 2)));
161 161
162 return IRQ_HANDLED; 162 return IRQ_HANDLED;
163} 163}
@@ -166,7 +166,7 @@ static int sa1100_rtc_read_callback(struct device *dev, int data)
166{ 166{
167 if (data & RTC_PF) { 167 if (data & RTC_PF) {
168 /* interpolate missed periods and set match for the next */ 168 /* interpolate missed periods and set match for the next */
169 unsigned long period = TIMER_FREQ/rtc_freq; 169 unsigned long period = timer_freq / rtc_freq;
170 unsigned long oscr = OSCR; 170 unsigned long oscr = OSCR;
171 unsigned long osmr1 = OSMR1; 171 unsigned long osmr1 = OSMR1;
172 unsigned long missed = (oscr - osmr1)/period; 172 unsigned long missed = (oscr - osmr1)/period;
@@ -263,7 +263,7 @@ static int sa1100_rtc_ioctl(struct device *dev, unsigned int cmd,
263 return 0; 263 return 0;
264 case RTC_PIE_ON: 264 case RTC_PIE_ON:
265 spin_lock_irq(&sa1100_rtc_lock); 265 spin_lock_irq(&sa1100_rtc_lock);
266 OSMR1 = TIMER_FREQ/rtc_freq + OSCR; 266 OSMR1 = timer_freq / rtc_freq + OSCR;
267 OIER |= OIER_E1; 267 OIER |= OIER_E1;
268 rtc_timer1_count = 1; 268 rtc_timer1_count = 1;
269 spin_unlock_irq(&sa1100_rtc_lock); 269 spin_unlock_irq(&sa1100_rtc_lock);
@@ -271,7 +271,7 @@ static int sa1100_rtc_ioctl(struct device *dev, unsigned int cmd,
271 case RTC_IRQP_READ: 271 case RTC_IRQP_READ:
272 return put_user(rtc_freq, (unsigned long *)arg); 272 return put_user(rtc_freq, (unsigned long *)arg);
273 case RTC_IRQP_SET: 273 case RTC_IRQP_SET:
274 if (arg < 1 || arg > TIMER_FREQ) 274 if (arg < 1 || arg > timer_freq)
275 return -EINVAL; 275 return -EINVAL;
276 rtc_freq = arg; 276 rtc_freq = arg;
277 return 0; 277 return 0;
@@ -352,6 +352,8 @@ static int sa1100_rtc_probe(struct platform_device *pdev)
352{ 352{
353 struct rtc_device *rtc; 353 struct rtc_device *rtc;
354 354
355 timer_freq = get_clock_tick_rate();
356
355 /* 357 /*
356 * According to the manual we should be able to let RTTR be zero 358 * According to the manual we should be able to let RTTR be zero
357 * and then a default diviser for a 32.768KHz clock is used. 359 * and then a default diviser for a 32.768KHz clock is used.