Commit Graph

1461758 Commits

Author SHA1 Message Date
Geert Uytterhoeven
db005bdaa5 rtc: hym8563: Make sure clk_init_data is fully initialized
The clk_init_data structure contains several mutually-exclusive members
for different methods to specify the possible parents of a clock,
prompting drivers to initialize only the members they need.  However,
not initializing all members may cause subtle issues, which are only
exposed when CONFIG_INIT_STACK_ALL_PATTERN or CONFIG_INIT_STACK_NONE is
enabled.

Make sure all members are fully initialized, to avoid such bugs, and to
prevent future breakage when converting drivers to a different method
for specifying the parents.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/657f2b3a871074087aee0b7a70bf527ab0f48da8.1787241693.git.geert+renesas@glider.be
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:49:51 +02:00
Lad Prabhakar
b418fa370e rtc: rzn1: Add support for Renesas RZ/T2H and RZ/N2H SoCs
Add support for the RTC block found on the Renesas RZ/T2H (R9A09G077)
and RZ/N2H (R9A09G087) SoCs.

These SoCs integrate a closely related variant of the RZ/N1 RTC IP, but
do not implement the RTCA0SUBU register. Use variant-specific match data
to disable SUBU support for these SoCs.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-18-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
8af6331c6e rtc: rzn1: Drop trailing comma from OF match table sentinel
Drop the trailing comma from the final empty entry in the RZN1 RTC OF
match table and mark it explicitly as the sentinel.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-17-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
38a3a3b099 rtc: rzn1: Add OF match data to gate SUBU register access
The RZ/N1 RTC driver selects SCMP mode only when an optional xtal clock
is provided at a valid rate other than 32768 Hz. Without an xtal clock,
or when it runs at 32768 Hz, the driver uses SUBU mode.

However, the RTCA0SUBU register used by SUBU mode is not present on all
SoCs that integrate a similar variant of the RTC block. Allowing SUBU
mode on those variants would expose RTC offset operations that access a
non-existent register.

Add OF match data to describe whether the RTC supports the SUBU register.
Reject probe with -EOPNOTSUPP when SUBU mode would be selected on a
variant without SUBU support.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Suggested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-16-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
5ae93269d3 rtc: rzn1: use FIELD_PREP/FIELD_GET and GENMASK for register access
Replace open-coded shift and mask operations with the bitfield API.

Note that the weekday field is changed from an explicit 0x0f mask to
an 8-bit field definition, matching the hardware manual. This does not
change behaviour, as valid weekday values cannot exceed 7.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-15-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
0e1ae8c654 rtc: rzn1: Consistently use dev_err_probe()
Use dev_err_probe() in the IRQ request error path to make error handling
consistent with the rest of rzn1_rtc_probe().

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-14-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
b587001387 rtc: rzn1: Use temporary variable for struct device
Use a temporary variable for the struct device pointers to avoid
dereferencing.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-13-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
afb8972b9e rtc: rzn1: Dynamically calculate synchronization delay based on clock rate
Replace the hardcoded hardware synchronization delays with a calculated
time window derived from the operating sub-clock frequency.

The driver currently hardcodes microsecond ranges assuming a fixed
sub-clock frequency of 32.768 kHz. Newer SoC variants, such as the
RZ/T2H, drive this hardware block using a much faster clock rate
(~195.3 kHz). Hardcoding these wait windows forces faster blocks to
over-sleep, introducing unnecessary delays during clock initialization
and register configuration.

Calculate the duration of the required clock cycles in microseconds based
on the runtime clock rate, and store this value in the driver private
structure to adjust the usleep_range() and readl_poll_timeout() boundaries
dynamically.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-12-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
6e0d7d480f rtc: rzn1: Replace remove callback with devm_add_action_or_reset()
Simplify the driver teardown by registering a managed cleanup action with
devm_add_action_or_reset(). This eliminates the explicit probe error path
and allows the .remove() callback to be dropped.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-11-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
ea0ef2e7f8 rtc: rzn1: Use pm_runtime_put_sync()
pm_runtime_put() may trigger the idle check after pm_runtime_disable()
is run as part of devm_pm_runtime_enable()'s cleanup action, leaving
runtime PM active.

Use pm_runtime_put_sync() to ensure the idle check runs synchronously.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-10-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
960987abe5 rtc: Kconfig: Broaden RTC_DRV_RZN1 dependency to ARCH_RENESAS
Replace the ARCH_RZN1 dependency with ARCH_RENESAS for the RTC_DRV_RZN1
config option to make the driver available across both ARM32 and ARM64
Renesas architectures.

The newer RZ/T2H and RZ/N2H ARM64 SoCs integrate a closely related variant
of the RTC IP block found on the RZ/N1 SoCs. Update the build dependency
and expand the Kconfig help text to allow this driver to be selected for
these additional platforms.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-9-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:57 +02:00
Lad Prabhakar
cd54d8f09d rtc: rzn1: Fix malformed MODULE_AUTHOR string
Fix a malformed MODULE_AUTHOR macro in the rtc-rzn1 driver where a missing
closing angle bracket on the second author entry creates an invalid format.
Correct it to the standard "Name <email>" format.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-8-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:56 +02:00
Lad Prabhakar
51458d5b0a rtc: rzn1: Disable alarm interrupt before reprogramming alarm registers
rzn1_rtc_set_alarm() updates RZN1_RTC_ALM, RZN1_RTC_ALH and
RZN1_RTC_ALW using separate MMIO writes without first disabling the
alarm interrupt. If a previous alarm is still enabled, the interrupt
can fire while the alarm registers contain a mixture of old and newly
written values.

Fix this by disabling the alarm interrupt before reprogramming ALM, ALH
and ALW with a call to rzn1_rtc_alarm_irq_enable().

Fixes: b5ad1bf00d ("rtc: rzn1: Add alarm support")
Cc: stable@vger.kernel.org
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-7-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:56 +02:00
Lad Prabhakar
c3e735e9f6 rtc: rzn1: Fix alarm range check truncation on 32-bit systems
alarm and farest were declared as unsigned long, but
rtc_tm_to_time64() returns time64_t (s64). On 32-bit systems where
unsigned long is 32 bits, the assignment silently truncates the upper
32 bits of the timestamp.

Fix by declaring alarm and farest as time64_t and replacing
time_after() with a direct signed comparison, which is correct for
time64_t values that will never realistically overflow.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-6-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:56 +02:00
Lad Prabhakar
457b5dbce3 rtc: rzn1: Handle unset alarm weekday in rzn1_rtc_read_alarm
RZN1_RTC_ALW is a weekday bitmask where bit N represents weekday N.
When no alarm has been configured, the register has its power-on-reset
value of zero.

rzn1_rtc_read_alarm() uses fls() to convert the weekday bitmask into a
weekday number. When RZN1_RTC_ALW is zero, fls(0) returns zero and
fls(wday) - 1 evaluates to -1. This invalid weekday is then used to
calculate the alarm date and can either leave tm_wday set to -1 or
produce a fabricated alarm date.

Treat a zero RZN1_RTC_ALW value as an unset alarm weekday and return
without calculating the alarm date. Move reading RZN1_RTC_CTL1 before
this check so that alrm->enabled is updated for both configured and
unconfigured alarms.

Fixes: b5ad1bf00d ("rtc: rzn1: Add alarm support")
Cc: stable@vger.kernel.org
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-5-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:56 +02:00
Lad Prabhakar
022a2839a5 rtc: rzn1: Fix weekday underflow when alarm crosses month boundary
rzn1_rtc_set_alarm() calculates the alarm weekday from the difference
between the alarm day and the current day of the month. When the alarm
crosses a month boundary, this difference can become negative. Since
days_ahead is unsigned, it underflows and results in an incorrect
weekday being programmed into RZN1_RTC_ALW.

The RTC core already provides a fully populated struct rtc_time for
the alarm, including the correct tm_wday. Use tm->tm_wday directly
instead of recalculating the weekday from the day-of-month.

This avoids the underflow and ensures alarms scheduled across a month
boundary use the correct weekday.

Fixes: b5ad1bf00d ("rtc: rzn1: Add alarm support")
Cc: stable@vger.kernel.org
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Suggested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-4-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:56 +02:00
Lad Prabhakar
708546aa39 rtc: rzn1: Handle EPROBE_DEFER for optional pps interrupt
Check for -EPROBE_DEFER from platform_get_irq_byname_optional() and handle
the deferred probe request properly.

Although the "pps" interrupt is optional, an error code of -EPROBE_DEFER
indicates that the interrupt subsystem is not yet ready. Intercept this
specific error condition, assign it to the return value, and jump to the
dis_runtime_pm label to avoid ignoring a valid probe deferral.

Fixes: eea7791e00 ("rtc: rzn1: implement one-second accuracy for alarms")
Cc: stable@vger.kernel.org
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:56 +02:00
Lad Prabhakar
1ffb5be3e4 dt-bindings: rtc: renesas,rzn1-rtc: Add RZ/T2H and RZ/N2H support
Add compatible strings for the RTC block found on the Renesas RZ/T2H
(R9A09G077) and RZ/N2H (R9A09G087) SoCs.

These SoCs integrate a closely related variant of the RZ/N1 RTC IP.
Unlike RZ/N1, they do not implement the RTCA0SUBU register. This is
not a limitation for Linux support, as these registers are not used
when the RTC operates in "scmp" clock mode, which is required on
RZ/T2H and RZ/N2H due to their 195.3 kHz input clock.

The RZ/T2H RTC variant also supports a 1Hz output signal on the
RTCAT1HZ pin, controlled by the RTCA0CTL1[RTCA01HZE] bit. This bit is
marked as reserved in the RZ/N1 hardware manual.

Update the binding schema to require the additional clock inputs used by
these SoCs.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-2-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-23 21:23:56 +02:00
Cosmo Chou
78acddfde7 rtc: pcf85363: Add error checking to regmap calls in probe()
The probe() function ignores errors returned by regmap operations.
If an I2C transport error occurs (e.g., -ENXIO), the driver continues
probing and may register a non-functional RTC device.

Propagate errors from all unchecked regmap calls in probe() using
dev_err_probe().

Fixes: fd9a6a1394 ("rtc: pcf85363: add support for the quartz-load-femtofarads property")
Signed-off-by: Cosmo Chou <chou.cosmo@gmail.com>
Link: https://lore.kernel.org/linux-rtc/20260716125142.1801599-1-chou.cosmo@gmail.com/
Link: https://patch.msgid.link/20260717193705.2003175-1-chou.cosmo@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-21 15:53:05 +02:00
Linkai Gong
ca45cfa743 rtc: gamecube: check return value of devm_rtc_register_device()
gamecube_rtc_probe() ignored the return value of
devm_rtc_register_device() and always returned success. Propagate the
error so probe fails when RTC registration fails.

Fixes: 86559400b3 ("rtc: gamecube: Add a RTC driver for the GameCube, Wii and Wii U")
Signed-off-by: Linkai Gong <gonglinkai@kylinos.cn>
Link: https://patch.msgid.link/20260731080458.417532-1-gonglinkai@kylinos.cn
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-20 01:04:38 +02:00
Robert Leussler
878d93aaa5 rtc: ds1307: fix RX8130 wakeup alarm WADA bit for day-of-month mode
The RX8130 wakeup alarm never fired when set via
/sys/class/rtc/rtc0/wakealarm. The root cause is that the WADA bit
(bit 3) in the Extension register (0x1c) was never set before
programming the alarm registers.

Per the RX8130 datasheet:
WADA=0 - Week alarm: register 0x19 is compared against day-of-week
WADA=1 - Day alarm:  register 0x19 is compared against day-of-month

rx8130_set_alarm() always writes a BCD day-of-month value to alarm
register 0x19, so WADA must be 1. With WADA=0 the hardware matched the
day-of-month value (e.g. 15) as a day-of-week index, which is always
out of range (valid weekdays are 0-6), so the alarm interrupt was never
asserted.

Fix by setting the WADA bit in rx8130_set_alarm() before writing the
Extension register back to the device.

This is consistent with rx8130_read_alarm(), which decodes the same
register under the same assumption (24-hour and day-of-month mode).

Signed-off-by: Robert Leussler <robert.leussler@leica-geosystems.com>
Link: https://patch.msgid.link/20260721081907.3518648-1-robert.leussler@leica-geosystems.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-20 00:28:44 +02:00
Sang-Heon Jeon
b1407862fb rtc: pcf2127: remove conditional return with no effect
Both branches of the check return the same value, so the check has
no effect. Remove it and return the value directly.

This is the result of running the Coccinelle script from
scripts/coccinelle/misc/cond_return_no_effect.cocci.

Signed-off-by: Sang-Heon Jeon <ekffu200098@gmail.com>
Reviewed-by: Bruno Thomsen <bruno.thomsen@gmail.com>
Link: https://patch.msgid.link/20260723184538.3888637-30-ekffu200098@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-20 00:08:35 +02:00
Eduard Bostina
4d31434fea dt-bindings: rtc: Convert TI Palmas RTC to DT schema
Convert the Texas Instruments Palmas RTC controller bindings
to DT schema.

As part of the conversion, declare 'wakeup-source: true'.
This documents the Palmas PMIC's capability to wake the system.

Signed-off-by: Eduard Bostina <egbostina@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260719141008.3562347-2-egbostina@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-20 00:04:31 +02:00
Teja Sai Charan Bellamkonda
745ca1b959 dt-bindings: rtc: Convert rtc-cmos binding to YAML
Convert the rtc-cmos devicetree bindings to dt schema.

The original text binding documents only the motorola,mc146818
compatible. Existing in-tree Devicetree sources also use the
intel,ce4100-rtc compatible together with the motorola,mc146818
fallback, but this was not documented. Document the Intel variant in the
schema so that these existing configurations are accepted during schema
validation.

Signed-off-by: Teja Sai Charan Bellamkonda <tejaasaye@gmail.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://patch.msgid.link/20260709221944.159244-1-tejaasaye@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-20 00:03:16 +02:00
Udaya Kiran Challa
1190db8edc dt-bindings: rtc: microchip,pic32mzda-rtc: Convert to DT schema
Convert Microchip PIC32 Real Time Clock and Calendar devicetree binding
from legacy text format to DT schema.

Signed-off-by: Udaya Kiran Challa <challauday369@gmail.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://patch.msgid.link/20260703110442.205026-1-challauday369@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 23:51:41 +02:00
Bhargav Joshi
315d11a891 dt-bindings: rtc: ti,omap-rtc: Convert to DT schema
Convert the Texas Instruments OMAP Real Time Clock (RTC) binding from
the legacy text format to the DT schema. Mark 'ti,hwmods' as deprecated
as it is no longer used, it is kept to support legacy boards.

Signed-off-by: Bhargav Joshi <j.bhargav.u@gmail.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20260804-ti-omap-rtc-v3-4-ba3bbd8af570@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 23:22:01 +02:00
Rosen Penev
da5e8713ae rtc: st-lpc: get IRQ via platform_get_irq()
Replace irq_of_parse_and_map() with platform_get_irq(), which resolves
the interrupt from pdev->dev.of_node directly and returns a positive IRQ
or a negative errno (it never returns 0). Propagate the error on failure
instead of the previous open-coded "IRQ missing or invalid" / -EINVAL
message, so -EPROBE_DEFER is handled correctly. The rtc->irq field is a
signed short, so the negative error code is preserved.

np is still used by of_property_read_u32() for "st,lpc-mode", so it is
not removed.

Built for ARM (multi_v7_defconfig + CONFIG_RTC_DRV_ST_LPC) with LLVM=1;
drivers/rtc/rtc-st-lpc.o compiles cleanly.

Assisted-by: opencode:hy3-free
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Link: https://patch.msgid.link/20260714002259.1392655-1-rosenp@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 18:17:03 +02:00
Alexandre Belloni
12b1843fee rtc: mv: remove mv_rtc_remove
Use devm_device_init_wakeup() so we can avoid having to explicitly teardown
of module removal.

Link: https://patch.msgid.link/20260625130202.1621692-2-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 18:11:38 +02:00
Alexandre Belloni
bcad3667a3 rtc: mv: fix potential race condition
Since the driver allocates the IRQ using devm_request_irq(), this means the
IRQ is going to be automatically unregistered by devres after
mv_rtc_remove() returns.

However, mv_rtc_remove() explicitly disables the hardware clock before
devres teardown happens so the interrupt handler may run while the clock is
disabled leading to a possible bus hang when accessing registers.

Link: https://patch.msgid.link/20260625130202.1621692-1-alexandre.belloni@bootlin.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 18:11:38 +02:00
Pengpeng Hou
7490b8356e rtc: ab-eoz9: add missing MODULE_DEVICE_TABLE()
The driver has a match table for the i2c bus wired into its driver
structure, but the table is not exported with MODULE_DEVICE_TABLE().

Add the missing MODULE_DEVICE_TABLE() entry so module alias information
is generated for automatic module loading.

This is a source-level fix.  It does not claim dynamic hardware
reproduction; the evidence is the driver-owned match table, its use by
the driver registration structure, and the missing module alias
publication.

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260704152528.53258-1-pengpeng@iscas.ac.cn
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 18:11:38 +02:00
Pengpeng Hou
402c89d28f rtc: brcmstb-waketimer: add missing MODULE_DEVICE_TABLE()
The driver has an OF match table wired to .of_match_table, but does
not export the table with MODULE_DEVICE_TABLE().

Add the missing MODULE_DEVICE_TABLE(of, ...) entry so module alias
information is generated for OF based module autoloading.

This is a source-level fix.  It does not claim dynamic hardware
reproduction; the evidence is the driver-owned match table, its use by
the platform driver, and the missing module alias publication.

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Link: https://patch.msgid.link/20260704121734.54941-1-pengpeng@iscas.ac.cn
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 18:11:38 +02:00
Pengpeng Hou
f1daef2834 rtc: s32g: add missing MODULE_DEVICE_TABLE()
The driver has an OF match table wired to .of_match_table, but does
not export the table with MODULE_DEVICE_TABLE().

Add the missing MODULE_DEVICE_TABLE(of, ...) entry so module alias
information is generated for OF based module autoloading.

This is a source-level fix.  It does not claim dynamic hardware
reproduction; the evidence is the driver-owned match table, its use by
the platform driver, and the missing module alias publication.

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Reviewed-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
Link: https://patch.msgid.link/20260704122003.70108-1-pengpeng@iscas.ac.cn
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 17:54:55 +02:00
Pengpeng Hou
5904c41095 rtc: zynqmp: Return optional clock lookup errors
devm_clk_get_optional() returns NULL when the optional clock is absent,
but returns an ERR_PTR when the clock provider lookup fails.  Probe
currently keeps the ERR_PTR and then passes it to clk_get_rate().

Return the lookup error instead.  A truly absent optional clock still
reaches the existing calibration fallback through clk_get_rate(NULL).

Signed-off-by: Pengpeng Hou <pengpeng@iscas.ac.cn>
Fixes: 07dcc6f9c7 ("rtc: zynqmp: Add calibration set and get support")
Reviewed-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260624055524.38522-1-pengpeng@iscas.ac.cn
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 17:42:05 +02:00
Jack Lee
2943ec93ee rtc: ds1343: replace symbolic permissions with octal
Symbolic permissions S_IRUGO and S_IWUSR are deprecated in favor of
octal permissions. Replace S_IRUGO|S_IWUSR with 0644 and S_IRUGO
with 0444.

Signed-off-by: Jack Lee <skunkolee@gmail.com>
Link: https://patch.msgid.link/20260612223534.77412-1-skunkolee@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 17:41:09 +02:00
Surendra Singh Chouhan
092755367e rtc: spacemit: handle regmap_test_bits() error return
p1_rtc_read_time() called if (!regmap_test_bits(regmap, RTC_CTRL, RTC_EN))
to check if the RTC was enabled.

regmap_test_bits() returns 1 if the bit is set, 0 if not set, and a
negative error code (e.g. -EIO) if reading the control register fails.
Using !regmap_test_bits(...) evaluates a negative error code as boolean
false, causing I2C/regmap read failures to be ignored and incorrectly
proceeding to read time registers from a failing device.

Fix this by capturing the return value of regmap_test_bits() and returning
the error code if negative, or -EINVAL if the RTC is disabled.

Fixes: a6de182daa ("rtc: spacemit: support the SpacemiT P1 RTC")
Reviewed-by: Alex Elder <elder@riscstar.com>
Signed-off-by: Surendra Singh Chouhan <kr494167@gmail.com>
Link: https://patch.msgid.link/20260724135803.81223-1-kr494167@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 16:41:00 +02:00
Yi Ding
9c48a53685 rtc: pcf8563: fix clock provider leak on unbind
pcf8563_clkout_register_clk() registers the CLKOUT clock provider with
of_clk_add_provider(), but nothing ever unwinds it: there is no
of_clk_del_provider() call and the driver has no remove callback. Each
of_clk_add_provider() allocates a struct of_clk_provider, takes a
reference on the OF node and adds an entry to the global of_clk_providers
list, none of which is released when the device is unbound. Every
bind/unbind (or module reload) therefore leaks a provider structure and
an of_node reference.

The clock itself is already device-managed (devm_clk_register()); only
the provider registration was not. Use devm_of_clk_add_hw_provider() so
the provider is removed automatically on unbind. Tie it to the parent
i2c device, whose OF node carries the #clock-cells and clock-output-names
properties (the RTC class device has no OF node of its own).

Fixes: a39a6405d5 ("rtc: pcf8563: add CLKOUT to common clock framework")
Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Yi Ding <yi.s.ding@gmail.com>
Link: https://patch.msgid.link/20260602035135.62264-1-yi.s.ding@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2026-08-19 15:19:05 +02:00
Linus Torvalds
dc59e4fea9 Linux 7.2-rc1 v7.2-rc1 2026-06-28 12:01:31 -07:00
Linus Torvalds
0716f9b933 Merge tag 'ntb-7.2' of https://github.com/jonmason/ntb
Pull NTB updates from Jon Mason:
 "An EPF bug fix to prevent an invalid unmap during device removal,
  along with documentation fixes and minor AMD driver cleanups"

* tag 'ntb-7.2' of https://github.com/jonmason/ntb:
  ntb: amd: Use named initializer for pci_device_id::driver_data
  NTB: fix kernel-doc warnings in ntb.h
  NTB: epf: Avoid pci_iounmap() with offset when PEER_SPAD and CONFIG share BAR
  ntb_hw_amd: Fix incorrect debug message in link disable path
2026-06-28 07:46:12 -07:00
Linus Torvalds
8b69c04758 Merge tag 'input-for-v7.2-rc0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull more input updates from Dmitry Torokhov:

 - Updates to Synaptics RMI4 driver to fix potential OOB accesses in F30
   and F3A keymap handling

 - A workaround in Synaptics RMI4 to tolerate buggy firmware on some
   touchpads (e.g. ThinkPad T14 Gen 1) that report incomplete register
   descriptor structures, preventing probe failures

 - A revert of an incorrect register descriptor address calculation in
   Synaptics RMI4 driver

 - A fix for a regression in HP GSC PS/2 (gscps2) driver where the
   receive buffer write index was not advanced, leaving keyboard and
   mouse unusable.

* tag 'input-for-v7.2-rc0-2' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: gscps2 - advance receive buffer write index
  Input: rmi4 - tolerate short register descriptor structure
  Revert "Input: rmi4 - fix register descriptor address calculation"
  Input: synaptics-rmi4 - bound the F30 keymap to the GPIO/LED count
  Input: synaptics-rmi4 - bound the F3A keymap to the GPIO count
2026-06-28 04:40:05 -07:00
Linus Torvalds
780d569e6c Merge tag 'pwm/for-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux
Pull pwm fixes from Uwe Kleine-König:
 "Two more fixes that I managed to put into the public branch merged
  into next before my first pull request but missed to include them in
  it.

  The first change is a relevant change that fixes misconfigurations due
  to a variable overflow. The second is only cosmetic but very obviously
  an improvement"

* tag 'pwm/for-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux:
  pwm: rzg2l-gpt: Add missing newlines to dev_err_probe() messages
  pwm: rzg2l-gpt: Fix period_ticks type from u32 to u64
2026-06-27 13:48:12 -07:00
Linus Torvalds
f21df87320 Merge tag 'fbdev-for-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
Pull more fbdev updates from Helge Deller:
 "Fixes for generic fbdev & fbcon code for the handling of modelists
  and preventing a potential NULL ptr dereference in the console code.

  Fix missed cleanups in the error path of various fbdev drivers.

  And Uwe Kleine-König contributed a cleanup patch to use named
  initializers in the vga16fb driver"

* tag 'fbdev-for-7.2-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  fbdev: Fix fb_new_modelist to prevent null-ptr-deref in fb_videomode_to_var
  fbcon: fix NULL pointer dereference for a console without vc_data
  fbdev: fix use-after-free in store_modes()
  fbdev: viafb: return an error when DMA copy times out
  fbdev: goldfishfb: fail pan display on base-update timeout
  fbdev: fbcon: fix out-of-bounds read in err_out of fbcon_do_set_font()
  fbdev: pm2fb: unwind WC setup on probe failure
  fbdev: vga16fb: Drop unused assignment of platform_device_id driver data
2026-06-27 12:52:20 -07:00
Linus Torvalds
14923571e7 Merge tag 'sound-fix-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
 "A collection of small bug fixes accumulated over the last week.
  Most are device-specific fixes while there are a few core fixes as
  well.

  Here are the highlights:

  ALSA Core:
   - A fix for an uninitialised heap leak in ALSA sequencer core
   - A fix for error handling/resource leak in compress-offload API

  USB-audio:
   - A teardown-ordering fix in USB MIDI 2.0 to prevent use-after-free
   - Bounds and length checks for packet data in Native Instruments
     caiaq / Traktor Kontrol input parsers
   - Avoidance of expensive kobject path lookups in DualSense controller
     matches
   - Robustness/memory leak fixes for Qualcomm USB offload driver
   - Focusrite Control Protocol (FCP) NULL-pointer dereference fix and a
     new device quirk (ISA C8X)
   - Device-specific quirks for Yamaha CDS3000 and SC13A

  HD-Audio:
   - A bunch of quirks and mute/mic-mute LED fixups for various laptops
     (Acer, Clevo, Lenovo, HP)

  ASoC & SoundWire:
   - Avoid failing card registration if the device_link creation fails
   - A workaround for SoundWire randconfig build failures by making
     helper functions static inline
   - Corrected MCLK reference validation for CS530x codecs
   - Clean up of untested, problematic guard() macro replacements in
     Rockchip SAI driver
   - Fix for eDMA maxburst misalignment with channel count in Freescale
     ASRC
   - Miscellaneous hardware-specific fixes (qcom, rt5650, tlv320aic3x,
     tas2781/3)

  Others:
   - Bounds and length checks for packet data in Apple iSight"

* tag 'sound-fix-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (46 commits)
  ALSA: FCP: Fix NULL pointer dereference in interface lookup
  ALSA: hda/realtek: Update Acer Nitro ANV15-41 quirk to enable mute LED
  ASoC: fsl_asrc_dma: fix eDMA maxburst misalignment with channel count
  ASoC: codecs: pcm512x: only print info once on no sclk
  ASoC: tas2781: Update default register address to TAS2563
  ALSA: firewire: isight: bound the sample count to the packet payload
  ALSA: usb-audio: qcom: Free QMI handle
  ALSA: hda: Add Lenovo Legion 7i 16IAX7 17AA3874 quirk
  ALSA: usb-audio: avoid kobject path lookup in DualSense match
  ALSA: hda/realtek: Add quirk for Acer Nitro ANV15-41
  ASoC: soc-core: Don't fail if device_link could not be created
  ASoC: rockchip: rockchip_sai: #include <linux/platform_device.h> explicitly
  ALSA: seq: Fix uninitialised heap leak in snd_seq_event_dup()
  ASoC: rt5575: Use __le32 for SPI burst write address
  ASoC: tas2783: Update loaded firmware names to linux-firmware 20260519
  ASoC: SDCA: Validate written enum value in ge_put_enum_double()
  ASoC: realtek: Add back local call to sdw_show_ping_status()
  ASoC: ti: Add back local call to sdw_show_ping_status()
  ASoC: max98373: Add back local call to sdw_show_ping_status()
  ASoC: es9356: Add back local call to sdw_show_ping_status()
  ...
2026-06-27 12:15:23 -07:00
Linus Torvalds
4bf54e4752 Merge tag 'i2c-fixes-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux
Pull i2c fixes from Andi Shyti:

 - i801: fix error path in smbus transfer

 - mpc: fix timeout calculation

* tag 'i2c-fixes-7.2-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/andi.shyti/linux:
  i2c: i801: fix hardware state machine corruption in error path
  i2c: mpc: Fix timeout calculations
2026-06-27 11:33:30 -07:00
Linus Torvalds
da7ca04e33 Merge tag 'rtc-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
Pull RTC updates from Alexandre Belloni:
 "Most of the work and improvements are for features of the m41t93.

  The ds1307 also gets support for OSF (Oscillator Stop Flag) for
  new variants.

  The pcap driver is being removed as the Motorola EZX support was
  removed a while ago.

  Subsystem:
   - add rtc_read_next_alarm() to read next expiring timer

  Drivers:
   - ds1307: handle OSF for ds1337/ds1339/ds3231, add clock provider for
     ds1307, fix wday for rx8130
   - m41t93: DT support, alarm, clock provider, watchdog support
   - mv: add suspend/resume support for wakeup
   - pcap: remove driver
   - renesas-rtca3: many fixes"

* tag 'rtc-7.2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (36 commits)
  rtc: ds1307: update reference to removed CONFIG_RTC_DRV_DS1307_HWMON
  platform/x86: amd-pmc: Fix S0i3 wakeup with alarmtimer
  rtc: s35390a: fix typo in comment
  rtc: cmos: unregister HPET IRQ handler on probe failure
  rtc: ds1307: Fix off-by-one issue with wday for rx8130
  dt-bindings: rtc: ds1307: Add epson,rx8901
  rtc: bq32000: add delay between RTC reads
  rtc: m41t93: Add watchdog support
  rtc: m41t93: Add square wave clock provider support
  rtc: m41t93: Add alarm support
  rtc: m41t93: migrate to regmap api for register access
  rtc: m41t93: add device tree support
  dt-bindings: rtc: Add ST m41t93
  rtc: ds1307: add support for clock provider in ds1307
  rtc: mv: add suspend/resume support for wakeup
  rtc: aspeed: add AST2700 compatible
  dt-bindings: rtc: add ASPEED AST2700 compatible
  rtc: interface: fix typos in rtc_handle_legacy_irq() documentation
  rtc: msc313: fix NULL deref in shared IRQ handler at probe
  rtc: remove unused pcap driver
  ...
2026-06-27 11:00:18 -07:00
Linus Torvalds
6ca693ea90 Merge tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux
Pull fscrypt fixes from Eric Biggers:

 - Fix a bug where in a specific edge case, file contents en/decryption
   could be done with the wrong data unit size

 - Fix the data structure used for keeping track of users that have
   added an fscrypt key to be a simple list instead of a 'struct key'
   keyring

   This fixes issues such as a lockdep report found by syzbot and
   possible unintended interactions with the keyctl() system calls

* tag 'fscrypt-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/linux:
  fscrypt: Replace mk_users keyring with simple list
  fscrypt: Fix key setup in edge case with multiple data unit sizes
2026-06-27 09:20:16 -07:00
Xu Rao
d86d4f8cbb Input: gscps2 - advance receive buffer write index
Commit 44f9200699 ("Input: gscps2 - use guard notation when
acquiring spinlock") moved the receive loop into gscps2_read_data()
and gscps2_report_data().

While moving the code, it preserved the writes to
buffer[ps2port->append], but omitted the following producer index
update from the original loop:

	ps2port->append = (ps2port->append + 1) & BUFFER_SIZE;

As a result, append never advances. Since gscps2_report_data() only
reports bytes while act != append, the receive buffer always appears
empty and no keyboard or mouse data reaches the serio core.

Restore the omitted index update.

Fixes: 44f9200699 ("Input: gscps2 - use guard notation when acquiring spinlock")
Cc: stable@vger.kernel.org # 6.13+
Signed-off-by: Xu Rao <raoxu@uniontech.com>
Link: https://patch.msgid.link/460B5655BA580C60+20260624094739.850306-1-raoxu@uniontech.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-06-26 22:42:56 -07:00
Dmitry Torokhov
2d6d33e45d Input: rmi4 - tolerate short register descriptor structure
Some touchpads (e.g. ThinkPad T14 Gen 1) have buggy firmware that reports
a register descriptor structure size that is too small for the number of
registers it claims to have in the presence map. The remaining bytes in
the structure are 0, which with the new strict bounds checking causes the
parser to fail with -EIO, aborting the device probe.

Tolerate such short reads by dropping the remaining (unparseable or
0-size) registers from the list instead of failing the probe,
preventing the driver from trying to use them.

Fixes: 0adb483fbf ("Input: rmi4 - refactor register descriptor parsing")
Reported-by: Barry K. Nathan <barryn@pobox.com>
Tested-by: Barry K. Nathan <barryn@pobox.com>
Cc: stable@vger.kernel.org
Assisted-by: Antigravity:gemini-3.5-flash
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-06-26 22:23:40 -07:00
Dmitry Torokhov
d85589879f Revert "Input: rmi4 - fix register descriptor address calculation"
The register descriptor presence register is a packet register, which
means its bytes share a single RMI address. It does not occupy
consecutive addresses, and the register structure that follows it
is located at the next RMI address (presence_address + 1), not
(presence_address + presence_size).

Revert the incorrect address calculation introduced in commit
a98518e724.

Reported-by: "Barry K. Nathan" <barryn@pobox.com>
Tested-by: "Barry K. Nathan" <barryn@pobox.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2026-06-26 22:22:42 -07:00
Uwe Kleine-König (The Capable Hub)
d1c3d45f87 ntb: amd: Use named initializer for pci_device_id::driver_data
The current list initialisation depends on the well hidden two zeros in
the PCI_VDEVICE macro. Instead use a named initialisation that is more
robust and easier to understand.

Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2026-06-26 22:18:34 -04:00
Randy Dunlap
8df969463b NTB: fix kernel-doc warnings in ntb.h
Correct a function name and function parameter name to avoid
kernel-doc warnings:

Warning: include/linux/ntb.h:575 expecting prototype for
 ntb_default_port_count(). Prototype was for ntb_default_peer_port_count()
 instead
Warning: include/linux/ntb.h:590 function parameter 'pidx' not
 described in 'ntb_default_peer_port_number'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
2026-06-26 22:18:34 -04:00