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2022-08-09rtc: spear: set range maxZeng Jingxiang1-1/+1
In the commit f395e1d3b28d7c2c67b73bd467c4fb79523e1c65 ("rtc: spear: set range"), the value of RTC_TIMESTAMP_END_9999 was incorrectly set to range_min. 390 config->rtc->range_min = RTC_TIMESTAMP_BEGIN_0000; 391 config->rtc->range_max = RTC_TIMESTAMP_END_9999; Fixes: f395e1d3b28d ("rtc: spear: set range") Signed-off-by: Zeng Jingxiang <linuszeng@tencent.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220728100101.1906801-1-zengjx95@gmail.com
2022-08-08rtc: rtc-cmos: Do not check ACPI_FADT_LOW_POWER_S0Rafael J. Wysocki1-3/+0
The ACPI_FADT_LOW_POWER_S0 flag merely means that it is better to use low-power S0 idle on the given platform than S3 (provided that the latter is supported) and it doesn't preclude using either of them (which of them will be used depends on the choices made by user space). For this reason, there is no benefit from checking that flag in use_acpi_alarm_quirks(). First off, it cannot be a bug to do S3 with use_acpi_alarm set, because S3 can be used on systems with ACPI_FADT_LOW_POWER_S0 and it must work if really supported, so the ACPI_FADT_LOW_POWER_S0 check is not needed to protect the S3-capable systems from failing. Second, suspend-to-idle can be carried out on a system with ACPI_FADT_LOW_POWER_S0 unset and it is expected to work, so if setting use_acpi_alarm is needed to handle that case correctly, it should be set regardless of the ACPI_FADT_LOW_POWER_S0 value. Accordingly, drop the ACPI_FADT_LOW_POWER_S0 check from use_acpi_alarm_quirks(). Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Reviewed-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/12054246.O9o76ZdvQC@kreacher
2022-08-08rtc: zynqmp: initialize fract_tickAlexandre Belloni1-1/+1
fract_tick is used uninitialized when fract_offset is 0 Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/20220727100018.3301470-1-alexandre.belloni@bootlin.com
2022-07-26rtc: Add NCT3018Y real time clock driverMia Lin3-0/+564
Add real time clock support for NCT3018Y. Signed-off-by: Mia Lin <mimi05633@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220713090647.8028-4-mimi05633@gmail.com
2022-07-26rtc: rx8025: fix 12/24 hour mode detection on RX-8035Mathew McBride1-4/+18
The 12/24hr flag in the RX-8035 can be found in the hour register, instead of the CTRL1 on the RX-8025. This was overlooked when support for the RX-8035 was added, and was causing read errors when the hour register 'overflowed'. To deal with the relevant register not always being visible in the relevant functions, determine the 12/24 mode at startup and store it in the driver state. Signed-off-by: Mathew McBride <matt@traverse.com.au> Fixes: f120e2e33ac8 ("rtc: rx8025: implement RX-8035 support") Cc: stable@vger.kernel.org Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220706074236.24011-1-matt@traverse.com.au
2022-07-26rtc: cros-ec: Only warn once in .remove() about notifier_chain problemsUwe Kleine-König1-3/+1
When a remove platform device callback returns an error code, the driver core emits an error message ("remove callback returned a non-zero value. This will be ignored.\n") and still removes the device. As the driver already emits a more specific error message, return 0 to suppress the core's error message. This is a preparation for making platform remove callbacks return void. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Tzung-Bi Shih <tzungbi@kernel.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220707153156.214841-1-u.kleine-koenig@pengutronix.de
2022-07-26rtc: vr41xx: remove driverThomas Bogendoerfer3-374/+0
Commit d3164e2f3b0a ("MIPS: Remove VR41xx support") removed support for MIPS VR41xx platform, so remove exclusive drivers for this platform, too. Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220715135330.134684-1-tsbogend@alpha.franken.de
2022-07-26rtc: mpfs: remove 'pending' variable from mpfs_rtc_wakeup_irq_handler()Tom Rix1-3/+0
cppcheck reports [drivers/rtc/rtc-mpfs.c:219]: (style) Variable 'pending' is assigned a value that is never used. The fetched CONTROL_REG stored in pending is unused and partially duplicates the functionality of the later call to mpfs_rtc_clear(). This looks like leftover development code, so remove pending. Fixes: 0b31d703598d ("rtc: Add driver for Microchip PolarFire SoC") Signed-off-by: Tom Rix <trix@redhat.com> Reviewed-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220627205943.2075043-1-trix@redhat.com
2022-07-26rtc: rv8803: fix missing unlock on error in rv8803_set_time()Yang Yingliang1-1/+3
Add the missing unlock before return from function rv8803_set_time() in the error handling case. Fixes: f8176e0bb83f ("rtc: rv8803: initialize registers on post-probe voltage loss") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220627080822.3881072-1-yangyingliang@huawei.com
2022-07-26rtc: zynqmp: Add calibration set and get supportSrinivas Neeli1-19/+94
Zynqmp RTC controller has a calibration feature to compensate time deviation due to input clock inaccuracy. Set and get calibration API's are used for setting and getting calibration value from the controller calibration register. Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220626070817.3780977-3-srinivas.neeli@xilinx.com
2022-07-26rtc: zynqmp: Updated calibration valueSrinivas Neeli1-1/+1
As per RTC spec default calibration value is 0x7FFF. We are in process to update the 0x7FFF as default value in the next version of TRM. Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com> Acked-by: Peter Korsgaard <peter@korsgaard.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220626070817.3780977-2-srinivas.neeli@xilinx.com
2022-07-26rtc: sun6i: add support for R329 RTCIcenowy Zheng1-0/+2
Allwinner R329 has a RTC with a similar time storage with H616 but a slightly different clock part. As we have already handled the R329 RTC clocks in the CCU driver, add a compatible string to RTC driver to allow probing of the RTC. Signed-off-by: Icenowy Zheng <icenowy@aosc.io> Signed-off-by: Samuel Holland <samuel@sholland.org> Tested-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220626042756.58961-1-samuel@sholland.org
2022-06-24rtc: Directly use ida_alloc()/free()keliu1-3/+3
Use ida_alloc()/ida_free() instead of deprecated ida_simple_get()/ida_simple_remove() . Signed-off-by: keliu <liuke94@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220527073636.2474546-1-liuke94@huawei.com
2022-06-24rtc: Introduce ti-k3-rtcNishanth Menon3-0/+692
Introduce support for Texas Instruments Real Time Clock controller on newer K3 family of SoCs such as AM62x. The hardware module that is being supported is the "digital only" version which doesn't have capability of external wakeup sources and external power backup. However, for many practical applications, this should suffice as RTC is operational across low power sequences. The hardware block by itself is split into two distinct domains internally to further reduce the power consumption with the actual counter block and comparators clocked off a 32k clock source (which based on SoC integration can be sourced by an external crystal) and an register interface block which is driven by the bus clock. While optimal from power perspective, it does create some complicated synchronizations and sequences that one must be wary of in the driver handling. Acked-by: Andrew Davis <afd@ti.com> Signed-off-by: Nishanth Menon <nm@ti.com> Tested-by: Georgi Vlaev <g-vlaev@ti.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220623170808.20998-3-nm@ti.com
2022-06-24rtc: Add driver for Microchip PolarFire SoCConor Dooley3-0/+337
Add support for the built-in RTC on Microchip PolarFire SoC Co-Developed-by: Daire McNamara <daire.mcnamara@microchip.com> Signed-off-by: Daire McNamara <daire.mcnamara@microchip.com> Signed-off-by: Conor Dooley <conor.dooley@microchip.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220601123320.2861043-2-conor.dooley@microchip.com
2022-06-24rtc: use simple i2c probeStephen Kitt21-63/+42
All these drivers have an i2c probe function which doesn't use the "struct i2c_device_id *id" parameter, so they can trivially be converted to the "probe_new" style of probe with a single argument. This change was done using the following Coccinelle script, and fixed up for whitespace changes: @ rule1 @ identifier fn; identifier client, id; @@ - static int fn(struct i2c_client *client, const struct i2c_device_id *id) + static int fn(struct i2c_client *client) { ...when != id } @ rule2 depends on rule1 @ identifier rule1.fn; identifier driver; @@ struct i2c_driver driver = { - .probe + .probe_new = ( fn | - &fn + fn ) , }; Signed-off-by: Stephen Kitt <steve@sk2.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220610162346.4134094-1-steve@sk2.org
2022-06-24rtc: Remove unused rtc_dev_exit().Tetsuo Handa2-11/+0
Commit 270a3bd6bdc21407 ("rtc: make class.c explicitly non-modular") removed rtc_dev_exit() call. Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/1e2f9a99-435d-e149-7456-dfacd53be85a@I-love.SAKURA.ne.jp
2022-06-24rtc: Replace flush_scheduled_work() with flush_work().Tetsuo Handa1-1/+1
Since "struct rtc_device" is per a device struct, I assume that clear_uie() needs to wait for only one work associated with that device. Therefore, wait for only that work using flush_work(). Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/8d3a0f55-d861-ba93-0d25-b1172eaa8343@I-love.SAKURA.ne.jp
2022-06-24rtc: isl1208: do not advertise update interrupt feature if no interrupt ↵Quentin Schulz1-3/+7
specified If an ISL1208 device does not have an interrupt line routed, the feature shouldn't be advertised (it is by default in rtc core) or it'll confuse userspace requesting that feature (such as hwclock from util-linux). Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220523145320.123713-1-foss+kernel@0leil.net
2022-06-24rtc: rv8803: re-initialize all Epson RX8803 registers on voltage lossAhmad Fatoum1-2/+38
The reference manuals of both the RX8803 and RV8803 dictate that "[On V2F/VLF = ] all registers must be initialized". The RV-8803 application manual (rev. 1.6) further specifies that crossing V_LOW2 threshold enables flag V2F and triggers a Power-On reset. According to table 3.11 in the document, all control registers are defined to sensible values. However, The Epson RX-8803 doesn't offer the same guarantees. It explicitly states: During the initial power-up, the TEST bit is reset to "0" and the VLF bit is set to "1". ∗ At this point, all other register values are _undefined_, so be sure to perform a reset before using the module. Commit d3700b6b6479 ("rtc: rv8803: Stop the clock while setting the time") also had this rationale: Indeed, all the registers must be initialized if the voltage has been lower than VLOW2 (triggering V2F), but not low enough to trigger a POR. We should follow the advice and initialize all applicable registers. We can group the registers into 3 groups: A) Already correctly handled registers: * 0B-0Ch | Timer Counter | unused and disabled by clearing TE in 0Dh * 0Dh | Extension Reg | already initialized in rv8803_regs_configure * 0Eh | Flag Reg | handled in IRQ handler, except for VLF, VDET * 0Eh | VLF, VDET | cleared in ->set_time * 10h | 100th Seconds | Already reset via RESET bit * 20-21h | Capture Buffer | holds timestamp unused by driver * 2Fh | Event Control | resets automatically B) Registers that are hardware initialized on POR, but not on VLF: * 0Fh | Control Reg * 2Ch | OSC Offset C) RAM that is undefined on voltage loss: * 00-06h | Date/Time * 07h | RAM * 08-0Ah | Alarm This means we should initialize after VLF the registers in group B (RV8803_CTRL and RV8803_OSC_OFFSET). Group C is all-zero after voltage loss on the RV-8803, but undefined on the RX-8803. This is ok for Date/Time because ->get_time returns an error code for as long as the voltage loss flag is active. It's cleared on ->set_time however. Zeroing both RAM and alarm ensures a fixed value is read afterwards. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220426071056.1187235-4-s.hauer@pengutronix.de
2022-06-24rtc: rv8803: initialize registers on post-probe voltage lossAhmad Fatoum1-0/+13
The driver probe currently initializes some registers to non-POR values. These values are not reinstated if the RTC experiences voltage loss later on. Fix this. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220426071056.1187235-3-s.hauer@pengutronix.de
2022-06-24rtc: rv8803: factor out existing register initialization to functionAhmad Fatoum1-14/+29
The driver probe currently initializes some registers to non-POR values. These values are not reinstated if the RTC experiences voltage loss later on. Prepare for fixing this by factoring out the initialization to a separate function. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220426071056.1187235-2-s.hauer@pengutronix.de
2022-06-24rtc: mc146818-lib: reduce RTC_UIP polling periodMateusz Jończyk1-4/+4
Waiting 1ms every time is not necessary, for example on some AMD boxes the RTC_UIP bit is documented as being high for around 270 microseconds in some cases [1], which agreed with experiments on an SB710 southbridge. So 100us seems optimal. This in preparation for mach_get_cmos_time() refactoring. The functions mc146818_get_time() and mach_get_cmos_time() in arch/x86/kernel/rtc.c perform the same function and the code is duplicated. mach_get_cmos_time() is busy waiting for the RTC_UIP bit to clear, so make mc146818_get_time() more similar to it by reducing the polling period. [1] AMD SB700/710/750 Register Reference Guide, page 307, https://developer.amd.com/wordpress/media/2012/10/43009_sb7xx_rrg_pub_1.00.pdf "SB700 A12: The UIP high pulse is 270 μS Typical when SS on SRC clock is OFF and 100μ min when SRC SS is ON." [sic] Signed-off-by: Mateusz Jończyk <mat.jonczyk@o2.pl> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@redhat.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: x86@kernel.org Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Alexandre Belloni <alexandre.belloni@bootlin.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220225215011.861477-2-mat.jonczyk@o2.pl
2022-06-03Merge tag 'arm-multiplatform-5.19-2' of ↵Linus Torvalds1-2/+0
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull more ARM multiplatform updates from Arnd Bergmann: "The second part of the multiplatform changes now converts the Intel/Marvell PXA platform along with the rest. The patches went through several rebases before the merge window as bugs were found, so they remained separate. This has to touch a lot of drivers, in particular the touchscreen, pcmcia, sound and clk bits, to detach the driver files from the platform and board specific header files" * tag 'arm-multiplatform-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (48 commits) ARM: pxa/mmp: remove traces of plat-pxa ARM: pxa: convert to multiplatform ARM: pxa/sa1100: move I/O space to PCI_IOBASE ARM: pxa: remove support for MTD_XIP ARM: pxa: move mach/*.h to mach-pxa/ ARM: PXA: fix multi-cpu build of xsc3 ARM: pxa: move plat-pxa to drivers/soc/ ARM: mmp: rename pxa_register_device ARM: mmp: remove tavorevb board support ARM: pxa: remove unused mach/bitfield.h ARM: pxa: move clk register definitions to driver ARM: pxa: move smemc register access from clk to platform cpufreq: pxa3: move clk register access to clk driver ARM: pxa: remove get_clk_frequency_khz() ARM: pxa: pcmcia: move smemc configuration back to arch ASoC: pxa: i2s: use normal MMIO accessors ASoC: pxa: ac97: use normal MMIO accessors ASoC: pxa: use pdev resource for FIFO regs Input: wm97xx - get rid of irq_enable method in wm97xx_mach_ops Input: wm97xx - switch to using threaded IRQ ...
2022-06-02Merge tag 'rtc-5.19' of ↵Linus Torvalds11-18/+500
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "A new driver represents the bulk of the changes and then we get the usual small fixes. New driver: - Renesas RZN1 rtc Drivers: - sun6i: Add nvmem support" * tag 'rtc-5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: rtc: mxc: Silence a clang warning rtc: rzn1: Fix a variable type rtc: rzn1: Fix error code in probe rtc: rzn1: Avoid mixing variables rtc: ftrtc010: Fix error handling in ftrtc010_rtc_probe rtc: mt6397: check return value after calling platform_get_resource() rtc: rzn1: fix platform_no_drv_owner.cocci warning rtc: gamecube: Add missing iounmap in gamecube_rtc_read_offset_from_sram rtc: meson: Fix email address in MODULE_AUTHOR rtc: simplify the return expression of rx8025_set_offset() rtc: pcf85063: Add a compatible entry for pca85073a dt-binding: pcf85063: Add an entry for pca85073a MAINTAINERS: Add myself as maintainer of the RZN1 RTC driver rtc: rzn1: Add oscillator offset support rtc: rzn1: Add alarm support rtc: rzn1: Add new RTC driver dt-bindings: rtc: rzn1: Describe the RZN1 RTC rtc: sun6i: Add NVMEM provider
2022-06-02rtc: mxc: Silence a clang warningFabio Estevam1-1/+1
Change the of_device_get_match_data() cast to (uintptr_t) to silence the following clang warning: drivers/rtc/rtc-mxc.c:315:19: warning: cast to smaller integer type 'enum imx_rtc_type' from 'const void *' [-Wvoid-pointer-to-enum-cast] Reported-by: kernel test robot <lkp@intel.com> Fixes: ba7aa63000f2 ("rtc: mxc: use of_device_get_match_data") Signed-off-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220526011459.1167197-1-festevam@gmail.com
2022-05-25rtc: rzn1: Fix a variable typeMiquel Raynal1-2/+1
The calculation in ->set_offset() handles both negative and positive offsets. The 'steps' variable will be checked to be in a specific [-x; +x] range, which means it must be a signed integer rather than unsigned. This also fixes the following smatch warning: warn: 'steps' 'true' implies 'steps > 0' is 'true' Fixes: be4a11cf98af ("rtc: rzn1: Add oscillator offset support") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220520082500.489248-1-miquel.raynal@bootlin.com
2022-05-25rtc: rzn1: Fix error code in probeDan Carpenter1-1/+1
There is a copy and paste error so this code returns the wrong variable. Fixes: deeb4b5393e1 ("rtc: rzn1: Add new RTC driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/YoZMg1dmHHSJEfE9@kili
2022-05-25rtc: rzn1: Avoid mixing variablesMiquel Raynal1-8/+8
In the ->set_offset() callback, the 'val' variable is used for two different purposes at the same time, which is oviously wrong: - It contains the intermediate value of the SUBU register that must be written at the end of ->set_offset(). - It is used in the middle of the above calculations to poll the CTL2 register for a specific value. Let's introduce a 'ctl2' variable just for the readl_poll_timeout() call and use it there in place of 'var'. In order to avoid mixing those two variables again, let's rename the remaining occurences of 'val' into 'subu' and initialize it to 0 to avoid the uninitialized variable situation reported by Tom Rix and Colin Ian King already. Fixes: be4a11cf98af ("rtc: rzn1: Add oscillator offset support") Reported-by: Tom Rix <trix@redhat.com> Reported-by: Colin Ian King <colin.i.king@gmail.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220520082221.488849-1-miquel.raynal@bootlin.com
2022-05-24Merge tag 'm68k-for-v5.19-tag1' of ↵Linus Torvalds1-27/+17
git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k Pull m68k updates from Geert Uytterhoeven: - Introduce virtual m68k machine based on Android Goldfish devices - defconfig updates - Minor fixes and improvements * tag 'm68k-for-v5.19-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: atari: Make Atari ROM port I/O write macros return void m68k: math-emu: Fix dependencies of math emulation support m68k: math-emu: Fix typos in comments m68k: Wire up syscall_trace_enter/leave for m68k m68k: defconfig: Update defconfigs for v5.18-rc1 m68k: Introduce a virtual m68k machine clocksource/drivers: Add a goldfish-timer clocksource rtc: goldfish: Use gf_ioread32()/gf_iowrite32() tty: goldfish: Introduce gf_ioread32()/gf_iowrite32()
2022-05-19rtc: ftrtc010: Fix error handling in ftrtc010_rtc_probeMiaoqian Lin1-10/+24
In the error handling path, the clk_prepare_enable() function call should be balanced by a corresponding 'clk_disable_unprepare()' call , as already done in the remove function. clk_disable_unprepare calls clk_disable() and clk_unprepare(). They will use IS_ERR_OR_NULL to check the argument. Fixes: ac05fba39cc5 ("rtc: gemini: Add optional clock handling") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220403054912.31739-1-linmq006@gmail.com
2022-05-19rtc: mt6397: check return value after calling platform_get_resource()Yang Yingliang1-0/+2
It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Fixes: fc2979118f3f ("rtc: mediatek: Add MT6397 RTC driver") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220505125043.1594771-1-yangyingliang@huawei.com
2022-05-19rtc: rzn1: fix platform_no_drv_owner.cocci warningYang Li1-1/+0
Remove .owner field if calls are used which set it automatically. ./drivers/rtc/rtc-rzn1.c:411:3-8: No need to set .owner here. The core will do it. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Yang Li <yang.lee@linux.alibaba.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220518232445.79156-1-yang.lee@linux.alibaba.com
2022-05-18rtc: gamecube: Add missing iounmap in gamecube_rtc_read_offset_from_sramYuan Can1-0/+1
The hw_srnprot needs to be unmapped when gamecube_rtc_read_offset_from_sram returns. Fixs: 86559400b3ef9d (rtc: gamecube: Add a RTC driver for the GameCube, Wii and Wii U) Signed-off-by: Yuan Can <yuancan@huawei.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220511071354.46202-1-yuancan@huawei.com
2022-05-18rtc: meson: Fix email address in MODULE_AUTHORNobuhiro Iwamatsu1-1/+1
Ben Dooks's email address is <ben.dooks@codethink.co.uk>. Fix Ben Dooks's email address in MODULE_AUTHOR. Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220506232850.220582-1-nobuhiro1.iwamatsu@toshiba.co.jp
2022-05-18rtc: simplify the return expression of rx8025_set_offset()Minghao Chi1-6/+1
Simplify the return expression. Reported-by: Zeal Robot <zealci@zte.com.cn> Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn> Reviewed-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220505022314.59822-1-chi.minghao@zte.com.cn
2022-05-18rtc: pcf85063: Add a compatible entry for pca85073aFabio Estevam1-0/+2
The PCA85073A RTC has the same programming model as the PCF85063A. Add a compatible entry for it. Tested on a custom i.MX6SX based board. Signed-off-by: Fabio Estevam <festevam@denx.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220419014445.341444-2-festevam@gmail.com
2022-05-18rtc: rzn1: Add oscillator offset supportMiquel Raynal1-0/+73
The RZN1 RTC can compensate the imprecision of the oscillator up to approximately 190ppm. Seconds can last slightly shorter or longer depending on the configuration. Below ~65ppm of correction, we can change the time spent in a second every minute, which is the most accurate compensation that the RTC can offer. Above, the compensation will be active every 20s. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220516082504.33913-5-miquel.raynal@bootlin.com
2022-05-18rtc: rzn1: Add alarm supportMiquel Raynal1-1/+105
The RZN1 RTC can trigger an interrupt when reaching a particular date up to 7 days ahead. Bring support for this alarm. One drawback though, the granularity is about a minute. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220516082504.33913-4-miquel.raynal@bootlin.com
2022-05-18rtc: rzn1: Add new RTC driverMichel Pollet3-0/+251
Add a basic RTC driver for the RZ/N1. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Co-developed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220516082504.33913-3-miquel.raynal@bootlin.com
2022-05-17rtc: sun6i: Add NVMEM providerSamuel Holland1-0/+42
The sun6i RTC provides 32 bytes of general-purpose data registers. They can be used to save data in the always-on RTC power domain. The registers are writable via 32-bit MMIO accesses only. Expose them with a NVMEM provider so they can be used by other drivers. Signed-off-by: Samuel Holland <samuel@sholland.org> Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220413231731.56709-1-samuel@sholland.org
2022-05-17Revert "clk: sunxi-ng: sun6i-rtc: Add support for H6"Jernej Skrabec1-0/+17
This reverts commit 1738890a3165ccd0da98ebd3e2d5f9b230d5afa8. Commit 1738890a3165 ("clk: sunxi-ng: sun6i-rtc: Add support for H6") breaks HDMI output on Tanix TX6 mini board. Exact reason isn't known, but because that commit doesn't actually improve anything, let's just revert it. Cc: stable@vger.kernel.org Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com> Link: https://lore.kernel.org/r/20220511200206.2458274-1-jernej.skrabec@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2022-04-19ARM: pxa: split up mach/hardware.hArnd Bergmann1-2/+0
The mach/hardware.h is included in lots of places, and it provides three different things on pxa: - the cpu_is_pxa* macros - an indirect inclusion of mach/addr-map.h - the __REG() and io_pv2() helper macros Split it up into separate <linux/soc/pxa/cpu.h> and mach/pxa-regs.h headers, then change all the files that use mach/hardware.h to include the exact set of those three headers that they actually need, allowing for further more targeted cleanup. linux/soc/pxa/cpu.h can remain permanently exported and is now in a global location along with similar headers. pxa-regs.h and addr-map.h are only used in a very small number of drivers now and can be moved to arch/arm/mach-pxa/ directly when those drivers are to pass the necessary data as resources. Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@kernel.org> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Jacek Anaszewski <jacek.anaszewski@gmail.com> Cc: Pavel Machek <pavel@ucw.cz> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Guenter Roeck <linux@roeck-us.net> Acked-by: Mark Brown <broonie@kernel.org> Cc: linux-clk@vger.kernel.org Cc: linux-pm@vger.kernel.org Cc: linux-input@vger.kernel.org Cc: linux-leds@vger.kernel.org Cc: linux-mmc@vger.kernel.org Cc: linux-mtd@lists.infradead.org Cc: linux-rtc@vger.kernel.org Cc: linux-usb@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-fbdev@vger.kernel.org Cc: linux-watchdog@vger.kernel.org Cc: alsa-devel@alsa-project.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2022-04-11clocksource/drivers: Add a goldfish-timer clocksourceLaurent Vivier1-12/+1
Add a clocksource based on the goldfish-rtc device. Move the timer register definition to <clocksource/timer-goldfish.h> This kernel implementation is based on the QEMU upstream implementation: https://git.qemu.org/?p=qemu.git;a=blob_plain;f=hw/rtc/goldfish_rtc.c goldfish-timer is a high-precision signed 64-bit nanosecond timer. It is part of the 'goldfish' virtual hardware platform used to run some emulated Android systems under QEMU. This timer only supports oneshot event. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20220406201523.243733-4-laurent@vivier.eu Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2022-04-11rtc: goldfish: Use gf_ioread32()/gf_iowrite32()Laurent Vivier1-15/+16
Replace readl()/writel() by gf_ioread32()/gf_iowrite32() as done for goldfish-tty. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220406201523.243733-3-laurent@vivier.eu Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2022-04-01Merge tag 'rtc-5.18' of ↵Linus Torvalds25-202/+617
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "The bulk of the patches are about replacing the uie_unsupported struct rtc_device member by a feature bit. Subsystem: - remove uie_unsupported, all users have been converted to clear RTC_FEATURE_UPDATE_INTERRUPT and provide a reason - RTCs with an alarm with a resolution of a minute are now letting the core handle rounding down the alarm time - fix use-after-free on device removal New driver: - OP-TEE RTC PTA Drivers: - sun6i: Add H616 support - cmos: Fix the AltCentury for AMD platforms - spear: set range" * tag 'rtc-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (56 commits) rtc: check if __rtc_read_time was successful rtc: gamecube: Fix refcount leak in gamecube_rtc_read_offset_from_sram rtc: mc146818-lib: Fix the AltCentury for AMD platforms rtc: optee: add RTC driver for OP-TEE RTC PTA rtc: pm8xxx: Return -ENODEV if set_time disallowed rtc: pm8xxx: Attach wake irq to device clk: sunxi-ng: sun6i-rtc: include clk/sunxi-ng.h rtc: remove uie_unsupported rtc: xgene: stop using uie_unsupported rtc: hym8563: switch to RTC_FEATURE_UPDATE_INTERRUPT rtc: hym8563: let the core handle the alarm resolution rtc: hym8563: switch to devm_rtc_allocate_device rtc: efi: switch to RTC_FEATURE_UPDATE_INTERRUPT rtc: efi: switch to devm_rtc_allocate_device rtc: add new RTC_FEATURE_ALARM_WAKEUP_ONLY feature rtc: spear: fix spear_rtc_read_time rtc: spear: drop uie_unsupported rtc: spear: set range rtc: spear: switch to devm_rtc_allocate_device rtc: pcf8563: switch to RTC_FEATURE_UPDATE_INTERRUPT ...
2022-03-29rtc: check if __rtc_read_time was successfulTom Rix1-2/+5
Clang static analysis reports this issue interface.c:810:8: warning: Passed-by-value struct argument contains uninitialized data now = rtc_tm_to_ktime(tm); ^~~~~~~~~~~~~~~~~~~ tm is set by a successful call to __rtc_read_time() but its return status is not checked. Check if it was successful before setting the enabled flag. Move the decl of err to function scope. Fixes: 2b2f5ff00f63 ("rtc: interface: ignore expired timers when enqueuing new timers") Signed-off-by: Tom Rix <trix@redhat.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220326194236.2916310-1-trix@redhat.com
2022-03-29rtc: gamecube: Fix refcount leak in gamecube_rtc_read_offset_from_sramMiaoqian Lin1-0/+1
The of_find_compatible_node() function returns a node pointer with refcount incremented, We should use of_node_put() on it when done Add the missing of_node_put() to release the refcount. Fixes: 86559400b3ef ("rtc: gamecube: Add a RTC driver for the GameCube, Wii and Wii U") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220309092225.6930-1-linmq006@gmail.com
2022-03-29rtc: mc146818-lib: Fix the AltCentury for AMD platformsMario Limonciello1-1/+15
Setting the century forward has been failing on AMD platforms. There was a previous attempt at fixing this for family 0x17 as part of commit 7ad295d5196a ("rtc: Fix the AltCentury value on AMD/Hygon platform") but this was later reverted due to some problems reported that appeared to stem from an FW bug on a family 0x17 desktop system. The same comments mentioned in the previous commit continue to apply to the newer platforms as well. ``` MC146818 driver use function mc146818_set_time() to set register RTC_FREQ_SELECT(RTC_REG_A)'s bit4-bit6 field which means divider stage reset value on Intel platform to 0x7. While AMD/Hygon RTC_REG_A(0Ah)'s bit4 is defined as DV0 [Reference]: DV0 = 0 selects Bank 0, DV0 = 1 selects Bank 1. Bit5-bit6 is defined as reserved. DV0 is set to 1, it will select Bank 1, which will disable AltCentury register(0x32) access. As UEFI pass acpi_gbl_FADT.century 0x32 (AltCentury), the CMOS write will be failed on code: CMOS_WRITE(century, acpi_gbl_FADT.century). Correct RTC_REG_A bank select bit(DV0) to 0 on AMD/Hygon CPUs, it will enable AltCentury(0x32) register writing and finally setup century as expected. ``` However in closer examination the change previously submitted was also modifying bits 5 & 6 which are declared reserved in the AMD documentation. So instead modify just the DV0 bank selection bit. Being cognizant that there was a failure reported before, split the code change out to a static function that can also be used for exclusions if any regressions such as Mikhail's pop up again. Cc: Jinke Fan <fanjinke@hygon.cn> Cc: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com> Link: https://lore.kernel.org/all/CABXGCsMLob0DC25JS8wwAYydnDoHBSoMh2_YLPfqm3TTvDE-Zw@mail.gmail.com/ Link: https://www.amd.com/system/files/TechDocs/51192_Bolton_FCH_RRG.pdf Signed-off-by: Raul E Rangel <rrangel@chromium.org> Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Link: https://lore.kernel.org/r/20220111225750.1699-1-mario.limonciello@amd.com
2022-03-25Merge tag 'mfd-next-5.18' of ↵Linus Torvalds2-31/+46
git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd Pull MFD updates from Lee Jones: "New Drivers: - Add support for Maxim MAX77714 PMIC Removed Drivers: - Remove support for ST-Ericsson AB8500 DebugFS New Device Support: - Add support for Silergy SY7636A to Simple MFD I2C - Add support for MediaTek MT6366 PMIC to MT6358 IRQ - Add support for Charger to Intel PMIC CRC - Add support for Raptor Lake to Intel LPSS PCI New Functionality: - Add support for Reboot to Rockchip RK808 Fix-ups: - Device Tree changes (includcing YAML conversion) for silergy,sy7636a, maxim,max77843, google,cros-ec, maxim,max14577, maxim,max77802, maxim,max77714, qcom,tcsr, qcom,spmi-pmic, stericsson,ab8500, stericsson,db8500-prcmu, samsung,exynos5433-lpass, mt6397, syscon, brcm,cru - Visible to menuconfig; simple-mfd-i2c - Clean-up or clarify code; max77686, intel_soc_pmic_crc - Improve error handling; mc13xxx-core, stmfx, asic3 - Pass device information to child devices; iqs62x, intel-lpss-acpi - Individually identify IRQ domains; intel_soc_pmic_core - Remove superfluous code; dbx500-prcmu, exynos-lpass - Staticify and constify; arizona-i2c - Mark sometimes used data as __maybe_unused; atmel-flexcom - Account for different ACPI tables on AOSP/Windows platforms; arizona-spi - Use provided (platform) APIs; ab8500-core - Trivial (whitespace, spelling); rohm-bd9576" * tag 'mfd-next-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (50 commits) dt-bindings: mfd: syscon: Add microchip,lan966x-cpu-syscon compatible mfd: bd9576: fix typos in comments mfd: Use platform_get_irq() to get the interrupt mfd: db8500-prcmu: Remove unused inline function mfd: arizona-spi: Add Android board ACPI table handling mfd: arizona-spi: Split Windows ACPI init code into its own function mfd: asic3: Add missing iounmap() on error asic3_mfd_probe MAINTAINERS: Rectify entry for ROHM MULTIFUNCTION BD9571MWV-M PMIC DEVICE DRIVERS mfd: intel-lpss: Provide an SSP type to the driver dt-bindings: mfd: brcm,cru: Rename pinctrl node dt-bindings: Add compatibles for undocumented trivial syscons mfd: atmel-flexcom: Fix compilation warning dt-bindings: mfd: Add compatible for the MediaTek MT6366 PMIC dt-bindings: mfd: samsung,exynos5433-lpass: Convert to dtschema mfd: exynos-lpass: Drop unneeded syscon.h include mfd: intel-lpss: Add Intel Raptor Lake PCH-S PCI IDs mfd: ab8500: Drop debugfs module mfd: sta2x11: Use GFP_KERNEL instead of GFP_ATOMIC mfd: ab8500: Rewrite bindings in YAML mfd: qcom-spmi-pmic: Add pm8953 compatible ...
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