Commit Graph

7 Commits

Author SHA1 Message Date
Alexandre Belloni 7e83f03fad rtc: mxc_v2: use rtc_time64_to_tm in mxc_rtc_read_alarm
Use the 64-bit version of rtc_time_to_tm in mxc_rtc_read_alarm

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-05-19 10:50:03 +02:00
Alexandre Belloni 95fbfa14b4 rtc: mxc_v2: let the core handle rtc range
This RTC is a 32-bit second counter.

This also solves an issue where mxc_rtc_set_alarm() can return with the
lock taken.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-05-19 10:47:46 +02:00
Alexandre Belloni 5490a1e018 rtc: mxc_v2: fix possible race condition
The IRQ is requested before the struct rtc is allocated and registered, but
this struct is used in the IRQ handler. This may lead to a NULL pointer
dereference.

Switch to devm_rtc_allocate_device/rtc_register_device to allocate the rtc
before requesting the IRQ.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-05-19 10:47:46 +02:00
Fabio Estevam 588519ff16 rtc: mxc_v2: Fix _iomem pointer notation
Fix the iomem pointer notation in order to fix the following sparse
warnings:

drivers/rtc/rtc-mxc_v2.c:280:18: warning: incorrect type in argument 1 (different address spaces)
drivers/rtc/rtc-mxc_v2.c:280:18:    expected void const volatile [noderef] <asn:2>*addr
drivers/rtc/rtc-mxc_v2.c:280:18:    got void *[noderef] <asn:2>ioaddr
drivers/rtc/rtc-mxc_v2.c:329:44: warning: incorrect type in argument 1 (different address spaces)
drivers/rtc/rtc-mxc_v2.c:329:44:    expected void *[noderef] <asn:2>ioaddr
drivers/rtc/rtc-mxc_v2.c:329:44:    got void [noderef] <asn:2>*
drivers/rtc/rtc-mxc_v2.c:339:44: warning: incorrect type in argument 1 (different address spaces)
drivers/rtc/rtc-mxc_v2.c:339:44:    expected void *[noderef] <asn:2>ioaddr
drivers/rtc/rtc-mxc_v2.c:339:44:    got void [noderef] <asn:2>*

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2018-03-01 10:49:36 +01:00
Arnd Bergmann db00d38e7b rtc: mxc_v2: remove __exit annotation
The mxc_rtc_remove is incorrectly annotated as __exit:

`mxc_rtc_remove' referenced in section `.data' of drivers/rtc/rtc-mxc_v2.o: defined in discarded section `.exit.text' of drivers/rtc/rtc-mxc_v2.o

This should not be done, as devices can be dynamically bound
and unbound to a driver.

Fixes: 54c47014b474 ("rtc: add mxc driver for i.MX53 SRTC")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2018-01-12 00:20:40 +01:00
Fabio Estevam a9c705a8bd rtc: mxc_v2: Remove unnecessary platform_get_resource() error check
devm_ioremap_resource() already checks if the resource is NULL, so
remove the unnecessary platform_get_resource() error check.

Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2018-01-12 00:20:40 +01:00
Patrick Bruenn 83c880f79e rtc: add mxc driver for i.MX53 SRTC
Neither rtc-imxdi, rtc-mxc nor rtc-snvs are compatible with i.MX53.

This is driver enables support for the low power domain SRTC features:
- 32-bit MSB of non-rollover time counter
- 32-bit alarm register

Select the new config option RTC_DRV_MXC_V2 to build this driver

Based on:
http://git.freescale.com/git/cgit.cgi/imx/linux-2.6-imx.git/tree/drivers/rtc/rtc-mxc_v2.c?h=imx_2.6.35_11.09.01

Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com>
Acked-by: Philippe Ombredanne <pombredanne@nexb.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2018-01-12 00:20:39 +01:00