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authorDavid Brown <davidb@codeaurora.org>2011-03-17 01:13:16 -0400
committerDavid Brown <davidb@codeaurora.org>2011-03-17 01:13:16 -0400
commit92c260f755c42337c550d8ac1f8ccd1b32bffb20 (patch)
tree6d04fefc1adeecabfb2b00c201e0db78fa2b5529 /drivers/rtc/rtc-ds1305.c
parent8e76a80960bf06c245160a484d5a363ca6b520bb (diff)
parent05e34754518b6a90d5c392790c032575fab12d66 (diff)
Merge remote branch 'rmk/for-linus' into for-linus
* rmk/for-linus: (1557 commits) ARM: 6806/1: irq: introduce entry and exit functions for chained handlers ARM: 6781/1: Thumb-2: Work around buggy Thumb-2 short branch relocations in gas ARM: 6747/1: P2V: Thumb2 support ARM: 6798/1: aout-core: zero thread debug registers in a.out core dump ARM: 6796/1: Footbridge: Fix I/O mappings for NOMMU mode ARM: 6784/1: errata: no automatic Store Buffer drain on Cortex-A9 ARM: 6772/1: errata: possible fault MMU translations following an ASID switch ARM: 6776/1: mach-ux500: activate fix for errata 753970 ARM: 6794/1: SPEAr: Append UL to device address macros. ARM: 6793/1: SPEAr: Remove unused *_SIZE macros from spear*.h files ARM: 6792/1: SPEAr: Replace SIZE macro's with SZ_4K macros ARM: 6791/1: SPEAr3xx: Declare device structures after shirq code ARM: 6790/1: SPEAr: Clock Framework: Rename usbd clock and align apb_clk entry ARM: 6789/1: SPEAr3xx: Rename sdio to sdhci ARM: 6788/1: SPEAr: Include mach/hardware.h instead of mach/spear.h ARM: 6787/1: SPEAr: Reorder #includes in .h & .c files. ARM: 6681/1: SPEAr: add debugfs support to clk API ARM: 6703/1: SPEAr: update clk API support ARM: 6679/1: SPEAr: make clk API functions more generic ARM: 6737/1: SPEAr: formalized timer support ... Conflicts: arch/arm/mach-msm/board-msm7x27.c arch/arm/mach-msm/board-msm7x30.c arch/arm/mach-msm/board-qsd8x50.c arch/arm/mach-msm/board-sapphire.c arch/arm/mach-msm/include/mach/memory.h
Diffstat (limited to 'drivers/rtc/rtc-ds1305.c')
-rw-r--r--drivers/rtc/rtc-ds1305.c43
1 files changed, 13 insertions, 30 deletions
diff --git a/drivers/rtc/rtc-ds1305.c b/drivers/rtc/rtc-ds1305.c
index 077af1d7b9e4..57fbcc149ba7 100644
--- a/drivers/rtc/rtc-ds1305.c
+++ b/drivers/rtc/rtc-ds1305.c
@@ -139,49 +139,32 @@ static u8 hour2bcd(bool hr12, int hour)
139 * Interface to RTC framework 139 * Interface to RTC framework
140 */ 140 */
141 141
142#ifdef CONFIG_RTC_INTF_DEV 142static int ds1305_alarm_irq_enable(struct device *dev, unsigned int enabled)
143
144/*
145 * Context: caller holds rtc->ops_lock (to protect ds1305->ctrl)
146 */
147static int ds1305_ioctl(struct device *dev, unsigned cmd, unsigned long arg)
148{ 143{
149 struct ds1305 *ds1305 = dev_get_drvdata(dev); 144 struct ds1305 *ds1305 = dev_get_drvdata(dev);
150 u8 buf[2]; 145 u8 buf[2];
151 int status = -ENOIOCTLCMD; 146 long err = -EINVAL;
152 147
153 buf[0] = DS1305_WRITE | DS1305_CONTROL; 148 buf[0] = DS1305_WRITE | DS1305_CONTROL;
154 buf[1] = ds1305->ctrl[0]; 149 buf[1] = ds1305->ctrl[0];
155 150
156 switch (cmd) { 151 if (enabled) {
157 case RTC_AIE_OFF:
158 status = 0;
159 if (!(buf[1] & DS1305_AEI0))
160 goto done;
161 buf[1] &= ~DS1305_AEI0;
162 break;
163
164 case RTC_AIE_ON:
165 status = 0;
166 if (ds1305->ctrl[0] & DS1305_AEI0) 152 if (ds1305->ctrl[0] & DS1305_AEI0)
167 goto done; 153 goto done;
168 buf[1] |= DS1305_AEI0; 154 buf[1] |= DS1305_AEI0;
169 break; 155 } else {
170 } 156 if (!(buf[1] & DS1305_AEI0))
171 if (status == 0) { 157 goto done;
172 status = spi_write_then_read(ds1305->spi, buf, sizeof buf, 158 buf[1] &= ~DS1305_AEI0;
173 NULL, 0);
174 if (status >= 0)
175 ds1305->ctrl[0] = buf[1];
176 } 159 }
177 160 err = spi_write_then_read(ds1305->spi, buf, sizeof buf, NULL, 0);
161 if (err >= 0)
162 ds1305->ctrl[0] = buf[1];
178done: 163done:
179 return status; 164 return err;
165
180} 166}
181 167
182#else
183#define ds1305_ioctl NULL
184#endif
185 168
186/* 169/*
187 * Get/set of date and time is pretty normal. 170 * Get/set of date and time is pretty normal.
@@ -460,12 +443,12 @@ done:
460#endif 443#endif
461 444
462static const struct rtc_class_ops ds1305_ops = { 445static const struct rtc_class_ops ds1305_ops = {
463 .ioctl = ds1305_ioctl,
464 .read_time = ds1305_get_time, 446 .read_time = ds1305_get_time,
465 .set_time = ds1305_set_time, 447 .set_time = ds1305_set_time,
466 .read_alarm = ds1305_get_alarm, 448 .read_alarm = ds1305_get_alarm,
467 .set_alarm = ds1305_set_alarm, 449 .set_alarm = ds1305_set_alarm,
468 .proc = ds1305_proc, 450 .proc = ds1305_proc,
451 .alarm_irq_enable = ds1305_alarm_irq_enable,
469}; 452};
470 453
471static void ds1305_work(struct work_struct *work) 454static void ds1305_work(struct work_struct *work)