linux/drivers/rtc, branch v6.3

Merge tag 'rtc-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux

2023-03-03T17:15:50Z

Pull RTC updates from Alexandre Belloni: "A few drivers got some nice cleanups and a new driver are making the bulk of the changes. Subsystem: - allow rtc_read_alarm without read_alarm callback New driver: - NXP BBNSM module RTC Drivers: - use IRQ flags from fwnode when available - abx80x: nvmem support - brcmstb-waketimer: add non-wake alarm support - ingenic: provide CLK32K clock - isl12022: cleanups - moxart: switch to using gpiod API - pcf85363: allow setting quartz load - pm8xxx: cleanups and support for setting time - rv3028, rv3032: add ACPI support" * tag 'rtc-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (64 commits) rtc: pm8xxx: add support for nvmem offset dt-bindings: rtc: qcom-pm8xxx: add nvmem-cell offset rtc: abx80x: Add nvmem support rtc: rx6110: Remove unused of_gpio,h rtc: efi: Avoid spamming the log on RTC read failure rtc: isl12022: sort header inclusion alphabetically rtc: isl12022: Join string literals back rtc: isl12022: Drop unneeded OF guards and of_match_ptr() rtc: isl12022: Explicitly use __le16 type for ISL12022_REG_TEMP_L rtc: isl12022: Get rid of unneeded private struct isl12022 rtc: pcf85363: add support for the quartz-load-femtofarads property dt-bindings: rtc: nxp,pcf8563: move pcf85263/pcf85363 to a dedicated binding rtc: allow rtc_read_alarm without read_alarm callback rtc: rv3032: add ACPI support rtc: rv3028: add ACPI support rtc: bbnsm: Add the bbnsm rtc support rtc: jz4740: Register clock provider for the CLK32K pin rtc: jz4740: Use dev_err_probe() rtc: jz4740: Use readl_poll_timeout dt-bindings: rtc: Add #clock-cells property ...

rtc: pm8xxx: add support for nvmem offset

2023-02-25T22:34:22Z

On many Qualcomm platforms the PMIC RTC control and time registers are read-only so that the RTC time can not be updated. Instead an offset needs be stored in some machine-specific non-volatile memory, which the driver can take into account. Add support for storing a 32-bit offset from the Epoch in an nvmem cell so that the RTC time can be set on such platforms. Signed-off-by: Johan Hovold Link: https://lore.kernel.org/r/20230202155448.6715-18-johan+linaro@kernel.org Signed-off-by: Alexandre Belloni

Merge tag 'rtc-6.2-fixes' into rtc-next

2023-02-25T22:31:23Z

rtc: abx80x: Add nvmem support

2023-02-23T23:02:30Z

This adds support for the 256-byte internal RAM. There are two windows which can be used to access this RAM: 64 bytes at 0x40 (the "standard" address space) and 128 bytes at 0x80 (the "alternate" address space). We use the standard address space because it is also accessible over SPI (if such a port is ever done). We are limited to 32-byte reads for SMBus compatibility, so there's no advantage to using the alternate address space. There are some reserved bits in the EXTRAM register, and the datasheet doesn't say what to do with them. I've opted to skip a read/modify/write and just write the whole thing. If this driver is ever converted to regmap, this would be a good place to use regmap_update_bits. Signed-off-by: Sean Anderson Link: https://lore.kernel.org/r/20221222214532.1873718-1-sean.anderson@seco.com Signed-off-by: Alexandre Belloni

rtc: rx6110: Remove unused of_gpio,h

2023-02-22T20:08:27Z

of_gpio.h provides a single function, which is not used in this driver. Remove unused header. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230215165030.83621-1-andriy.shevchenko@linux.intel.com Signed-off-by: Alexandre Belloni

rtc: efi: Avoid spamming the log on RTC read failure

2023-02-22T20:07:53Z

There are cases where the EFI runtime services may end up in a funny state, e.g., due to a crash in the variable services, and this affects other EFI runtime services as well. That means that, even though GetTime() should not return an error, there are cases where it might, and there is no point in logging such an occurrence multiple times. This works around an issue where user space -apparently- keeps hitting on /dev/rtc if it fails to read the h/w clock, resulting in a tsunami of log spam and a non-responsive system as a result. Cc: Pierre Gondois Cc: Alexandru Elisei Link: https://lore.kernel.org/all/Y2o1hdZK9GGDVJsS@monolith.localdoman/ Signed-off-by: Ard Biesheuvel Link: https://lore.kernel.org/r/20230217142338.1444509-1-ardb@kernel.org Signed-off-by: Alexandre Belloni

rtc: isl12022: sort header inclusion alphabetically

2023-02-22T20:06:30Z

Sort header inclusion alphabetically for better maintenance. Signed-off-by: Andy Shevchenko Acked-by: Rasmus Villemoes Link: https://lore.kernel.org/r/20230110140806.87432-6-andriy.shevchenko@linux.intel.com Signed-off-by: Alexandre Belloni

rtc: isl12022: Join string literals back

2023-02-22T20:06:30Z

For easy grepping on debug purposes join string literals back in the messages. While at it, drop __func__ parameter from unique enough dev_dbg() message as Dynamic Debug can retrieve this at run time. Signed-off-by: Andy Shevchenko Acked-by: Rasmus Villemoes Link: https://lore.kernel.org/r/20230110140806.87432-5-andriy.shevchenko@linux.intel.com Signed-off-by: Alexandre Belloni

rtc: isl12022: Drop unneeded OF guards and of_match_ptr()

2023-02-22T20:06:30Z

Drop unneeded OF guards and of_match_ptr(). This allows use of the driver with other types of firmware such as ACPI PRP0001 based probing. Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20230110140806.87432-4-andriy.shevchenko@linux.intel.com Signed-off-by: Alexandre Belloni

rtc: isl12022: Explicitly use __le16 type for ISL12022_REG_TEMP_L

2023-02-22T20:06:30Z

We are reading 10-bit value in a 16-bit register in LE format. Make this explicit by using __le16 type for it and corresponding conversion function. Signed-off-by: Andy Shevchenko Acked-by: Rasmus Villemoes Link: https://lore.kernel.org/r/20230110140806.87432-3-andriy.shevchenko@linux.intel.com Signed-off-by: Alexandre Belloni