linux/drivers/rtc/rtc-pl031.c, branch v4.9

rtc: pl031: remove misuse of IRQF_NO_SUSPEND flag

2015-11-08T13:12:24Z

The IRQF_NO_SUSPEND flag is used to identify the interrupts that should be left enabled so as to allow them to work as expected during the suspend-resume cycle, but doesn't guarantee that it will wake the system from a suspended state, enable_irq_wake is recommended to be used for the wakeup. This patch removes the use of IRQF_NO_SUSPEND flags and uses newly introduce PM wakeup APIs dev_pm_{set,clear}_wake_irq. Cc: Linus Walleij Cc: Alessandro Zummo Cc: Alexandre Belloni Cc: rtc-linux@googlegroups.com Signed-off-by: Sudeep Holla Acked-by: Linus Walleij Signed-off-by: Alexandre Belloni

rtc: pl031: fix typo for author email

2015-09-05T11:19:08Z

The email address missed character ">", so add it. Signed-off-by: Leo Yan Signed-off-by: Alexandre Belloni

drivers/rtc/rtc-pl03x.c: remove unnecessary amba_set_drvdata()

2013-11-13T03:09:31Z

Driver core clears the driver data to NULL after device_release or on probe failure, so just remove it from here. The relevant driver core change was commit 0998d0631001 ("device-core: Ensure drvdata = NULL when no driver is bound"). Signed-off-by: Michal Simek Cc: Linus Walleij Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rtc: rtc-pl031: Set wakeup flag prior to registering rtcdev

2013-09-18T21:37:50Z

In some recent testing, I noticed the CLOCK_REALTIME_ALARM clockid wasn't functioning on my vexpress qemu environment. Looking into it I noticed the pl031 rtc driver doesn't set the wakeup flag on the device until after registering the device with the RTC subsystem. This causes the alarmtimer subsystem to not see the pl031 driver as a valid backing device, and that resuls in alarm clockids getting ENOTSUPP errors. Thus be sure to set the wakeup flag on the device prior to registering the rtcdev so the pl031 rtc driver can be used as the backing alarmtimer device. Cc: Linus Walleij Cc: Alessandro Zummo Cc: "Jon Medhurst (Tixy)" Cc: linux-arm-kernel@lists.infradead.org Acked-by: Linus Walleij Signed-off-by: John Stultz

drivers/rtc/rtc-pl031.c: pass correct pointer to free_irq()

2013-05-24T23:22:52Z

free_irq() expects the same pointer that was passed to request_irq(), otherwise the IRQ is not freed. The issue was found using the following coccinelle script: @r1@ type T; T devid; @@ request_irq(..., devid) @r2@ type r1.T; T devid; position p; @@ free_irq@p(..., devid) @@ position p != r2.p; @@ *free_irq@p(...) Signed-off-by: Lars-Peter Clausen Cc: Srinidhi Kasagar Cc: Linus Walleij Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: add wakeup support

2013-02-22T01:22:28Z

Mark the pl031 as wake-up capable so that rtcwake and suspend test can work. Signed-off-by: Rob Herring Cc: Srinidhi Kasagar Cc: Linus Walleij Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: restore ST variant functionality

2013-02-12T22:34:00Z

Commit e7e034e18a0a ("drivers/rtc/rtc-pl031.c: fix the missing operation on enable") accidentally broke the ST variants of PL031. The bit that is being poked as "clockwatch" enable bit for the ST variants does the work of bit 0 on this variant. Bit 0 is used for a clock divider on the ST variants, and setting it to 1 will affect timekeeping in a very bad way. Signed-off-by: Linus Walleij Acked-by: Haojian Zhuang Cc: Mian Yousaf KAUKAB Cc: Srinidhi Kasagar Cc: Alessandro Zummo Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

drivers/rtc/rtc-pl031.c: fix the missing operation on enable

2013-02-05T09:38:49Z

The RTC control register should be enabled in the process of initializing. Without this patch, I failed to enable RTC in Hisilicon Hi3620 SoC. The register mapping section in RTC is always read as zero. So I doubt that ST guys may already enable this register in bootloader. So they won't meet this issue. Signed-off-by: Haojian Zhuang Cc: Srinidhi Kasagar Cc: Linus Walleij Cc: Alessandro Zummo Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rtc: pl031: fix up IRQ flags

2012-07-31T00:25:18Z

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 Signed-off-by: Linus Walleij Reviewed-by: Rickard Andersson Reviewed-by: Jonas Aberg Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

rtc: pl031: use per-vendor variables for special init

2012-07-31T00:25:18Z

Instead of hard-checking for certain vendor codes, follow the pattern of other AMBA (PrimeCell) drivers and use variables in the vendor data. Get rid of the locally cached vendor and hardware revision since we already have the nice vendor data variable in the state. Signed-off-by: Linus Walleij Cc: Alessandro Zummo Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds