kernel/linux.git/drivers/rtc/rtc-snvs.c, branch v5.9.12

rtc: snvs: Add necessary clock operations for RTC APIs

2020-05-30T01:17:48+00:00

There could be still RTC registers access after RTC suspend with clock disabled, need to add clock operations for each RTC API to make sure accessing RTC registers is successfully. Signed-off-by: Anson Huang Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/1590113996-31845-2-git-send-email-Anson.Huang@nxp.com

rtc: snvs: Make SNVS clock always prepared

2020-05-30T01:17:48+00:00

In IRQ handler, ONLY clock enable/disable is called due to clock prepare can NOT be called in interrupt context, but clock enable/disable will return failure if prepare count is 0, to fix this issue, just make SNVS clock always prepared there, the SNVS clock has no prepare function implemented, so it won't impact anything. Signed-off-by: Anson Huang Signed-off-by: Alexandre Belloni Link: https://lore.kernel.org/r/1590113996-31845-1-git-send-email-Anson.Huang@nxp.com

rtc: snvs: Use devm_add_action_or_reset() for calls to clk_disable_unprepare()

2020-03-16T10:55:55+00:00

Use devm_add_action_or_reset() for calls to clk_disable_unprepare(), which can simplify the error handling. Signed-off-by: Anson Huang Link: https://lore.kernel.org/r/1584109849-21402-1-git-send-email-Anson.Huang@nxp.com Link: https://lore.kernel.org/r/1584233264-26025-1-git-send-email-Anson.Huang@nxp.com Signed-off-by: Alexandre Belloni

rtc: snvs: Remove unused include of of_device.h

2020-02-18T21:39:23+00:00

There is nothing in use from of_device.h, remove it. Signed-off-by: Anson Huang Link: https://lore.kernel.org/r/1581823666-16944-1-git-send-email-Anson.Huang@nxp.com Signed-off-by: Alexandre Belloni

rtc: snvs: switch to rtc_time64_to_tm/rtc_tm_to_time64

2019-09-01T06:48:23+00:00

Call the 64bit versions of rtc_tm time conversion now that the range is enforced by the core. Link: https://lore.kernel.org/r/20190828205056.31321-2-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni

rtc: snvs: set range

2019-09-01T06:48:15+00:00

The SNVS is a 47-bit counter incremented at 32768Hz, it is then a 32-bit second counter. Link: https://lore.kernel.org/r/20190828205056.31321-1-alexandre.belloni@bootlin.com Signed-off-by: Alexandre Belloni

rtc: snvs: fix possible race condition

2019-08-29T15:53:12+00:00

The RTC IRQ is requested before the struct rtc_device is allocated, this may lead to a NULL pointer dereference in IRQ handler. To fix this issue, allocating the rtc_device struct before requesting the RTC IRQ using devm_rtc_allocate_device, and use rtc_register_device to register the RTC device. Signed-off-by: Anson Huang Reviewed-by: Dong Aisheng Link: https://lore.kernel.org/r/20190716071858.36750-1-Anson.Huang@nxp.com Signed-off-by: Alexandre Belloni

rtc: snvs: Use __maybe_unused instead of #if CONFIG_PM_SLEEP

2019-05-08T20:14:36+00:00

Use __maybe_unused for power management related functions instead of #if CONFIG_PM_SLEEP to simply the code. Signed-off-by: Anson Huang Reviewed-by: Dong Aisheng Signed-off-by: Alexandre Belloni

rtc: snvs: use devm_platform_ioremap_resource() to simplify code

2019-04-04T08:07:11+00:00

Use the new helper devm_platform_ioremap_resource() which wraps the platform_get_resource() and devm_ioremap_resource() together, to simplify the code. Signed-off-by: Anson Huang Signed-off-by: Alexandre Belloni

rtc: snvs: use dev_pm_set_wake_irq() to simplify code

2019-04-04T08:07:11+00:00

With calling dev_pm_set_wake_irq() to set SNVS RTC as wakeup source for suspend, generic wake irq mechanism will automatically enable it as wakeup source when suspend, then the suspend/resume callback which are ONLY for enabling/disabling irq wake can be removed, it simplifies the code. Signed-off-by: Anson Huang Signed-off-by: Alexandre Belloni