- 23 Feb, 2023 1 commit
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Sean Anderson authored
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 <sean.anderson@seco.com> Link: https://lore.kernel.org/r/20221222214532.1873718-1-sean.anderson@seco.comSigned-off-by:
Alexandre Belloni <alexandre.belloni@bootlin.com>
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- 22 Feb, 2023 13 commits
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Andy Shevchenko authored
of_gpio.h provides a single function, which is not used in this driver. Remove unused header. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Link: https://lore.kernel.org/r/20230215165030.83621-1-andriy.shevchenko@linux.intel.comSigned-off-by:
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Ard Biesheuvel authored
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 <pierre.gondois@arm.com> Cc: Alexandru Elisei <alexandru.elisei@arm.com> Link: https://lore.kernel.org/all/Y2o1hdZK9GGDVJsS@monolith.localdoman/Signed-off-by:
Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20230217142338.1444509-1-ardb@kernel.orgSigned-off-by:
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Andy Shevchenko authored
Sort header inclusion alphabetically for better maintenance. Signed-off-by:
Rasmus Villemoes <linux@rasmusvillemoes.dk> Link: https://lore.kernel.org/r/20230110140806.87432-6-andriy.shevchenko@linux.intel.comSigned-off-by:
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Andy Shevchenko authored
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:
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Andy Shevchenko authored
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:
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Andy Shevchenko authored
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:
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Andy Shevchenko authored
First of all, the struct rtc_device pointer is kept in the managed resources, no need to keep it outside (no users in the driver). Second, replace private struct isl12022 with a regmap. Signed-off-by:
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Javier Carrasco authored
The quartz oscillator load capacitance of the PCF85263 and PCF85363 can be adjusted to 6 pF, 7 pF (default) and 12.5 pF with the CL[1:0] bits in the oscillator control register (address 25h). Signed-off-by:
Javier Carrasco <javier.carrasco@wolfvision.net> Link: https://lore.kernel.org/r/20230215081815.3141776-3-javier.carrasco@wolfvision.netSigned-off-by:
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Javier Carrasco authored
These Real Time Clocks are managed by the rtc-pcf85363 device driver, which now supports the quartz-load-femtofarads property. Signed-off-by:
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Link: https://lore.kernel.org/r/20230215081815.3141776-2-javier.carrasco@wolfvision.netSigned-off-by:
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Alexandre Belloni authored
.read_alarm is not necessary to read the current alarm because it is recorded in the aie_timer and so rtc_read_alarm() will never call rtc_read_alarm_internal() which is the only function calling the callback. Reported-by:
Zhipeng Wang <zhipeng.wang_1@nxp.com> Reported-by:
Marcel Ziswiler <marcel.ziswiler@toradex.com> Fixes: 7ae41220 ("rtc: introduce features bitfield") Tested-by:
Philippe Schenker <philippe.schenker@toradex.com> Link: https://lore.kernel.org/r/20230214222754.582582-1-alexandre.belloni@bootlin.comSigned-off-by:
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Alexandre Belloni authored
The RV-3032 has been assigned the MCRY3032 ACPI ID. Link: https://lore.kernel.org/r/20230214202716.565749-1-alexandre.belloni@bootlin.comSigned-off-by:
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Alexandre Belloni authored
The RV-3028 has been assigned the MCRY3028 ACPI ID. Link: https://lore.kernel.org/r/20230214202653.565647-1-alexandre.belloni@bootlin.comSigned-off-by:
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Jacky Bai authored
The BBNSM module includes a real time counter with alarm. Add a RTC driver for this function. Signed-off-by:
Jacky Bai <ping.bai@nxp.com> Reviewed-by:
Peng Fan <peng.fan@nxp.com> Link: https://lore.kernel.org/r/20230215024117.3357341-3-ping.bai@nxp.comSigned-off-by:
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- 09 Feb, 2023 24 commits
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Paul Cercueil authored
On JZ4770 and JZ4780, the CLK32K pin is configurable. By default, it is configured as a GPIO in input mode, and its value can be read through GPIO PD14. With this change, clients can now request the 32 kHz clock on the CLK32K pin, through Device Tree. This clock is simply a pass-through of the input oscillator's clock with enable/disable operations. This will permit the WiFi/Bluetooth chip to work on the MIPS CI20 board, which does source one of its clocks from the CLK32K pin. Signed-off-by:
Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20230129120442.22858-5-paul@crapouillou.netSigned-off-by:
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Paul Cercueil authored
Use dev_err_probe() where it makes sense to simplify a bit the code. Signed-off-by:
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Paul Cercueil authored
Use readl_poll_timeout() from <iopoll.h> instead of using custom poll loops. The timeout settings are different, but that shouldn't be much of a problem. Instead of polling 10000 times in a close loop, it polls for one millisecond. Signed-off-by:
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Paul Cercueil authored
The RTC in the JZ4770 is compatible with the JZ4760, but has an extra register that permits to configure the behaviour of the CLK32K pin. The same goes for the RTC in the JZ4780. With this change, the RTC node is now also a clock provider on these SoCs, so a #clock-cells property is added. Signed-off-by:
Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20230129120442.22858-2-paul@crapouillou.netSigned-off-by:
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Dmitry Torokhov authored
MOXA ART RTC driver has been switched to gpiod API and is now using properly named properties for its gpios (with gpiolib implementing a quirk to recognize legacy names). Change binding document to use proper names as well. Signed-off-by:
Dmitry Torokhov <dmitry.torokhov@gmail.com> Link: https://lore.kernel.org/r/20230201054815.4112632-2-dmitry.torokhov@gmail.comSigned-off-by:
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Dmitry Torokhov authored
Switch the driver from legacy gpio API that is deprecated to the newer gpiod API that respects line polarities described in ACPI/DT. This makes driver use standard property name for its gpios ("rtc-*-gpios" vs "gpios-rtc-*"), however there is a quirk in gpiolib to also recognize legacy names and keep compatibility with older DTSes: eaf1a296 ("gpiolib: of: add a quirk for legacy names in MOXA ART RTC"). Signed-off-by: -
Johan Hovold authored
For consistency with the rest of the driver, drop the last two error messages for conditions that should only occur during development, if ever. Signed-off-by:
Johan Hovold <johan+linaro@kernel.org> Link: https://lore.kernel.org/r/20230202155448.6715-16-johan+linaro@kernel.orgSigned-off-by:
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Johan Hovold authored
Clean up local declarations somewhat by using the reverse xmas style consistently throughout. Signed-off-by:
David Collins <quic_collinsd@quicinc.com> Link: https://lore.kernel.org/r/20230202155448.6715-15-johan+linaro@kernel.orgSigned-off-by:
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Johan Hovold authored
In preparation for adding support for setting the time by means of an externally stored offset, refactor read_time() by adding a new helper that can be used to retrieve the raw time as stored in the RTC. Signed-off-by:
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Johan Hovold authored
The PMIC RTC registers are 32-bit so explicitly use u32 rather than unsigned long for timestamps to reflect the hardware. This will also help avoid unintentional range extensions when adding support for managing an external offset. Signed-off-by:
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Johan Hovold authored
Clean up the driver comments somewhat and remove obsolete, incorrect or redundant ones. Signed-off-by:
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Johan Hovold authored
Clean up the driver somewhat by renaming the driver-data alarm irq variable by dropping the redundant "rtc" prefix. Signed-off-by:
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Johan Hovold authored
Rename the driver-data struct device pointer by dropping the "rtc" prefix which is both redundant and misleading (as this is a pointer to the platform device and not the rtc class device). Signed-off-by:
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Johan Hovold authored
Clean up the time and alarm callback debugging by using a consistent and succinct human-readable (i.e. non-raw) format. Signed-off-by:
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Johan Hovold authored
Use the unaligned le32 helpers instead of open coding when accessing the time and alarm registers. Signed-off-by:
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Johan Hovold authored
Drop the original register defines which have been unused since commit c8d523a4 ("drivers/rtc/rtc-pm8xxx.c: rework to support pm8941 rtc"). Signed-off-by:
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Johan Hovold authored
In the unlikely event that disabling the alarm and clearing the status ever fails, return IRQ_NONE instead of IRQ_HANDLED. Signed-off-by:
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Johan Hovold authored
Since commit c8d523a4 ("drivers/rtc/rtc-pm8xxx.c: rework to support pm8941 rtc") which removed the shadow control register there is no need for a driver lock. Specifically, the rtc ops are serialised by rtc core and the interrupt handler only unconditionally disables the alarm using the alarm_ctrl register. Note that since only the alarm enable bit of alarm_ctrl is used after enabling the RTC at probe, the locking was not needed when doing open coded read-modify-write cycles either. Signed-off-by:
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Johan Hovold authored
Switch to using regmap_update_bits() instead of open coding read-modify-write accesses. Signed-off-by:
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Johan Hovold authored
Drop the unnecessary error messages after every spmi regmap access, which are not expected to fail. Signed-off-by:
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Johan Hovold authored
Make sure to disable the alarm before updating the four alarm time registers to avoid spurious alarms during the update. Note that the disable needs to be done outside of the ctrl_reg_lock section to prevent a racing alarm interrupt from disabling the newly set alarm when the lock is released. Fixes: 9a9a54ad ("drivers/rtc: add support for Qualcomm PMIC8xxx RTC") Cc: stable@vger.kernel.org # 3.1 Signed-off-by:
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Heiner Kallweit authored
Convert Amlogic Meson vrtc controller binding to yaml. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by:
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Sascha Hauer authored
RTC core never calls rv8803_set_alarm with an invalid alarm time, so if an invalid alarm time > 0 is set, external factors must have corrupted the RTC's alarm time and possibly other registers. Play it safe by marking the date/time invalid, so all registers are reinitialized on a ->set_time. This may cause existing setups to lose time if they so far set only date/time, but ignored that the alarm registers had an invalid date value, e.g.: rtc rtc0: invalid alarm value: 2020-3-27 7:82:0 These systems will have their ->get_time return -EINVAL till ->set_time initializes the alarm value (and sets a new time). Signed-off-by:
Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by:
Sascha Hauer <s.hauer@pengutronix.de> Link: https://lore.kernel.org/r/20221123095527.2771434-3-s.hauer@pengutronix.deSigned-off-by:
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Ahmad Fatoum authored
bcd2bin(0x0A) happily returns 10, despite this being an invalid BCD value. RTC drivers converting possibly corrupted BCD timestamps might want to validate their input before calling bcd2bin(). Provide a macro to do so. Unlike bcd2bin and bin2bcd, out-of-line versions are not implemented. Should the macro experience enough use, this can be retrofitted. Signed-off-by:
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- 01 Feb, 2023 2 commits
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Uwe Kleine-König authored
rtc-max8907 is a platform driver that doesn't use any symbol provided in <linux/i2c.h>. So drop the include. Signed-off-by:
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20221219081440.1399791-1-u.kleine-koenig@pengutronix.deSigned-off-by:
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Alexandre Belloni authored
Allow the IRQ type to be passed from the device tree if available as there may be components changing the trigger type of the interrupt between the RTC and the IRQ controller. Link: https://lore.kernel.org/r/20230123200217.1236011-1-alexandre.belloni@bootlin.comSigned-off-by:
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