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authorMattias Wallin <mattias.wallin@stericsson.com>2012-07-31 01:41:39 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-31 04:25:18 +0400
commit559a6fc0508392a665a26d93db9ff875bfdc6540 (patch)
tree960faef493c6470fc0f50e94a543a5eb54c15d99 /drivers/rtc
parent1bb457fc9268bb75156af8db78b72a4463baaec4 (diff)
downloadlinux-559a6fc0508392a665a26d93db9ff875bfdc6540.tar.xz
rtc: pl031: fix up IRQ flags
The pl031 interrupt is shared between the timer part and the clockwatch part of the same HW block on the ux500, so mark it IRQF_SHARED on this variant. This patch also adds the IRQF_NO_SUSPEND flag to the rtc irq on all variants as we don't want this pretty important IRQ to be disabled in suspend. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Rickard Andersson <rickard.andersson@stericsson.com> Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/rtc')
-rw-r--r--drivers/rtc/rtc-pl031.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c
index e66afb816d61..08378e3cc21c 100644
--- a/drivers/rtc/rtc-pl031.c
+++ b/drivers/rtc/rtc-pl031.c
@@ -75,11 +75,13 @@
* clockwatch function
* @st_weekday: if this is an ST Microelectronics silicon version that need
* the weekday fix
+ * @irqflags: special IRQ flags per variant
*/
struct pl031_vendor_data {
struct rtc_class_ops ops;
bool clockwatch;
bool st_weekday;
+ unsigned long irqflags;
};
struct pl031_local {
@@ -373,7 +375,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id)
}
if (request_irq(adev->irq[0], pl031_interrupt,
- 0, "rtc-pl031", ldata)) {
+ vendor->irqflags, "rtc-pl031", ldata)) {
ret = -EIO;
goto out_no_irq;
}
@@ -403,6 +405,7 @@ static struct pl031_vendor_data arm_pl031 = {
.set_alarm = pl031_set_alarm,
.alarm_irq_enable = pl031_alarm_irq_enable,
},
+ .irqflags = IRQF_NO_SUSPEND,
};
/* The First ST derivative */
@@ -416,6 +419,7 @@ static struct pl031_vendor_data stv1_pl031 = {
},
.clockwatch = true,
.st_weekday = true,
+ .irqflags = IRQF_NO_SUSPEND,
};
/* And the second ST derivative */
@@ -429,6 +433,11 @@ static struct pl031_vendor_data stv2_pl031 = {
},
.clockwatch = true,
.st_weekday = true,
+ /*
+ * This variant shares the IRQ with another block and must not
+ * suspend that IRQ line.
+ */
+ .irqflags = IRQF_SHARED | IRQF_NO_SUSPEND,
};
static struct amba_id pl031_ids[] = {