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linux/drivers/rtc
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Shanker Donthineni 8c3203f47d rtc: efi: Enable SET/GET WAKEUP services as optional 
commit 101ca8d05913b7d1e6e8b9dd792193d4082fff86 upstream.

The current implementation of rtc-efi is expecting all the 4
time services GET{SET}_TIME{WAKEUP} must be supported by UEFI
firmware. As per the EFI_RT_PROPERTIES_TABLE, the platform
specific implementations can choose to enable selective time
services based on the RTC device capabilities.

This patch does the following changes to provide GET/SET RTC
services on platforms that do not support the WAKEUP feature.

1) Relax time services cap check when creating a platform device.
2) Clear RTC_FEATURE_ALARM bit in the absence of WAKEUP services.
3) Conditional alarm entries in '/proc/driver/rtc'.

Cc: <stable@vger.kernel.org> # v6.0+
Signed-off-by: Shanker Donthineni <sdonthineni@nvidia.com>
Link: https://lore.kernel.org/r/20230102230630.192911-1-sdonthineni@nvidia.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-02-09 11:28:17 +01:00
..
class.c
rtc: class: Fix potential memleak in devm_rtc_allocate_device()
2022-12-31 13:32:49 +01:00
dev.c
rtc: Remove unused rtc_dev_exit().
2022-06-24 21:24:02 +02:00
interface.c
rtc: check if __rtc_read_time was successful
2022-03-29 22:45:50 +02:00
Kconfig
rtc: isl12022: switch to using regmap API
2022-10-13 00:17:22 +02:00
lib_test.c
rtc: lib_test: add MODULE_LICENSE
2021-08-10 23:21:46 +02:00
lib.c
rtc: Improve performance of rtc_time64_to_tm(). Add tests.
2021-08-10 00:09:21 +02:00
Makefile
rtc: Add NCT3018Y real time clock driver
2022-07-26 17:07:04 +02:00
nvmem.c
rtc: nvmem: emit an error message when nvmem registration fails
2020-11-19 12:50:12 +01:00
proc.c
rtc: fix snprintf() checking in is_rtc_hctosys()
2021-05-25 00:36:11 +02:00
rtc-88pm80x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-88pm860x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ab8500.c
rtc: ab8500: let the core handle the alarm resolution
2021-11-10 00:45:57 +01:00
rtc-ab-b5ze-s3.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-ab-eoz9.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-abx80x.c
rtc: abx80x: Add utility function for writing configuration key
2021-02-13 23:03:26 +01:00
rtc-ac100.c
rtc: ac100: use rtc_lock/rtc_unlock
2021-01-25 23:45:37 +01:00
rtc-armada38x.c
rtc: armada38x: remove armada38x_rtc_ops_noirq
2021-01-16 23:19:26 +01:00
rtc-as3722.c
…
rtc-asm9260.c
rtc: asm9260: use rtc_lock/rtc_unlock
2021-01-25 23:46:16 +01:00
rtc-aspeed.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-at91rm9200.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-at91sam9.c
rtc: at91sam9: Remove unnecessary offset variable checks
2021-07-10 02:42:08 +02:00
rtc-au1xxx.c
rtc: au1xxx: convert to SPDX identifier
2021-07-10 01:53:39 +02:00
rtc-bd70528.c
rtc: bd70528: Drop BD70528 support
2021-06-20 22:24:52 +02:00
rtc-bq32k.c
i2c: Make remove callback return void
2022-08-16 12:46:26 +02:00
rtc-bq4802.c
…
rtc-brcmstb-waketimer.c
rtc: brcmstb-waketimer: quiet maybe-unused variable warning
2021-02-06 00:58:24 +01:00
rtc-cadence.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-cmos.c
rtc: cmos: Disable ACPI RTC event on removal
2022-12-31 13:32:49 +01:00
rtc-core.h
rtc: Remove unused rtc_dev_exit().
2022-06-24 21:24:02 +02:00
rtc-cpcap.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-cros-ec.c
rtc: cros-ec: Only warn once in .remove() about notifier_chain problems
2022-07-26 16:43:46 +02:00
rtc-da9052.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-da9055.c
…
rtc-da9063.c
rtc: da9063: add as wakeup source
2021-12-02 23:23:38 +01:00
rtc-davinci.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-digicolor.c
rtc: digicolor: quiet maybe-unused variable warning
2021-02-06 00:58:24 +01:00
rtc-dm355evm.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1216.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-ds1286.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-ds1302.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
rtc-ds1305.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
rtc-ds1307.c
rtc: ds1307: switch to RTC_FEATURE_UPDATE_INTERRUPT
2022-03-23 19:58:38 +01:00
rtc-ds1343.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
rtc-ds1347.c
rtc: ds1347: fix value written to century register
2023-01-07 11:11:50 +01:00
rtc-ds1374.c
i2c: Make remove callback return void
2022-08-16 12:46:26 +02:00
rtc-ds1390.c
rtc: ds1390: Add SPI ID table
2021-09-25 23:22:28 +02:00
rtc-ds1511.c
rtc: ds1511: remove unused function
2021-04-17 11:21:04 +02:00
rtc-ds1553.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1672.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-ds1685.c
rtc: ds1685: Fix spelling of function name in comment block
2022-10-13 00:21:28 +02:00
rtc-ds1742.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds2404.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds3232.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-efi.c
rtc: efi: Enable SET/GET WAKEUP services as optional
2023-02-09 11:28:17 +01:00
rtc-em3027.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-ep93xx.c
rtc: ep93xx: Fix NULL pointer dereference in ep93xx_rtc_read_time
2020-12-03 23:49:31 +01:00
rtc-fm3130.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-fsl-ftm-alarm.c
rtc: fsl-ftm-alarm: add MODULE_TABLE()
2021-04-17 11:21:04 +02:00
rtc-ftrtc010.c
rtc: ftrtc010: Fix error handling in ftrtc010_rtc_probe
2022-05-19 12:08:17 +02:00
rtc-gamecube.c
rtc: gamecube: Always reset HW_SRNPROT after read
2022-08-23 22:27:58 +02:00
rtc-generic.c
…
rtc-goldfish.c
clocksource/drivers: Add a goldfish-timer clocksource
2022-04-11 11:48:01 +02:00
rtc-hid-sensor-time.c
iio: hid-sensors: lighten exported symbols by moving to IIO_HID namespace
2021-06-16 14:53:13 +01:00
rtc-hym8563.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-imx-sc.c
rtc: imx-sc: remove .read_alarm
2021-04-29 23:03:26 +02:00
rtc-imxdi.c
rtc: imxdi: add wakeup support
2021-05-25 00:41:25 +02:00
rtc-isl1208.c
rtc: isl1208: do not advertise update interrupt feature if no interrupt specified
2022-06-24 21:24:02 +02:00
rtc-isl12022.c
rtc: isl12022: switch to using regmap API
2022-10-13 00:17:22 +02:00
rtc-isl12026.c
i2c: Make remove callback return void
2022-08-16 12:46:26 +02:00
rtc-jz4740.c
rtc: jz4740: Use devm_clk_get_enabled() helper
2022-10-13 00:31:37 +02:00
rtc-lp8788.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-lpc24xx.c
rtc: remove unnecessary error message after platform_get_irq
2020-04-15 09:56:17 +02:00
rtc-lpc32xx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ls1x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-m41t80.c
i2c: Make remove callback return void
2022-08-16 12:46:26 +02:00
rtc-m41t93.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-m41t94.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-m48t35.c
rtc: m48t35: remove SGI-IP27 kludge
2020-03-16 11:12:11 +01:00
rtc-m48t59.c
rtc: m48t59: use platform_get_irq_optional
2021-03-11 09:48:09 +01:00
rtc-m48t86.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-max6900.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-max6902.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-max6916.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-max8907.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-max8925.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-max8997.c
…
rtc-max8998.c
…
rtc-max77686.c
rtc: max77686: Add MAX77714 support
2022-03-07 13:55:04 +00:00
rtc-mc13xxx.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-mc146818-lib.c
rtc: mc146818-lib: reduce RTC_UIP polling period
2022-06-24 21:23:50 +02:00
rtc-mcp795.c
rtc: mcp795: Add SPI ID table
2021-10-01 23:28:28 +02:00
rtc-meson-vrtc.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-meson.c
rtc: meson: Fix email address in MODULE_AUTHOR
2022-05-18 00:20:39 +02:00
rtc-moxart.c
rtc: moxart: Convert to SPDX identifier
2019-12-23 11:23:49 +01:00
rtc-mpc5121.c
rtc: mpc5121: switch to RTC_FEATURE_UPDATE_INTERRUPT
2022-03-23 19:58:38 +01:00
rtc-mpfs.c
rtc: mpfs: Use devm_clk_get_enabled() helper
2022-10-13 00:31:18 +02:00
rtc-msc313.c
rtc: msc313: Fix function prototype mismatch in msc313_rtc_probe()
2023-01-04 11:28:58 +01:00
rtc-msm6242.c
rtc: msm6242: Remove unneeded msm6242_set()/msm6242_clear() functions
2019-11-18 15:23:54 +01:00
rtc-mt2712.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-mt6397.c
rtc: mt6397: check return value after calling platform_get_resource()
2022-05-19 12:05:48 +02:00
rtc-mt7622.c
rtc: use devm_platform_ioremap_resource() to simplify code
2019-10-07 01:07:35 +02:00
rtc-mv.c
rtc: mv: remove mv_rtc_alarm_ops
2021-01-16 23:19:26 +01:00
rtc-mxc_v2.c
rtc: mxc_v2: Add missing clk_disable_unprepare()
2022-12-31 13:32:55 +01:00
rtc-mxc.c
rtc: mxc: Use devm_clk_get_enabled() helper
2022-08-23 22:33:38 +02:00
rtc-nct3018y.c
rtc: Add NCT3018Y real time clock driver
2022-07-26 17:07:04 +02:00
rtc-ntxec.c
rtc: New driver for RTC in Netronix embedded controller
2021-03-10 11:06:33 +00:00
rtc-omap.c
rtc: omap: drop unneeded MODULE_ALIAS
2021-09-25 23:26:37 +02:00
rtc-opal.c
rtc: opal: switch to RTC_FEATURE_UPDATE_INTERRUPT
2022-03-23 19:58:39 +01:00
rtc-optee.c
rtc: optee: add RTC driver for OP-TEE RTC PTA
2022-03-25 11:42:50 +01:00
rtc-palmas.c
rtc: palmas: convert to SPDX identifier
2021-07-10 01:53:39 +02:00
rtc-pcap.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pcf2123.c
rtc: pcf2123: set RTC_FEATURE_ALARM_RES_MINUTE
2022-03-23 19:58:39 +01:00
rtc-pcf2127.c
rtc: pcf2127: Convert to .probe_new()
2022-12-31 13:32:49 +01:00
rtc-pcf8523.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-pcf8563.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-pcf8583.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-pcf50633.c
…
rtc-pcf85063.c
rtc: pcf85063: fix pcf85063_clkout_control
2022-12-31 13:32:53 +01:00
rtc-pcf85363.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-pic32.c
rtc: pic32: Move devm_rtc_allocate_device earlier in pic32_rtc_probe()
2022-12-31 13:32:53 +01:00
rtc-pl030.c
amba: Make the remove callback return void
2021-02-02 14:25:50 +01:00
rtc-pl031.c
rtc: pl031: fix rtc features null pointer dereference
2022-03-23 19:58:37 +01:00
rtc-pm8xxx.c
rtc: pm8xxx: Return -ENODEV if set_time disallowed
2022-03-25 11:38:33 +01:00
rtc-ps3.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-pxa.c
ARM: pxa: split up mach/hardware.h
2022-04-19 16:27:05 +02:00
rtc-r7301.c
rtc: r7301: Replace spin_lock_irqsave with spin_lock in hard IRQ
2021-02-06 00:50:47 +01:00
rtc-r9701.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rc5t583.c
…
rtc-rc5t619.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rk808.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rp5c01.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rs5c313.c
rtc: rtc-rs5c313: Convert to module_platform_driver()
2020-08-21 00:13:44 +02:00
rtc-rs5c348.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-rs5c372.c
i2c: Make remove callback return void
2022-08-16 12:46:26 +02:00
rtc-rtd119x.c
rtc: rtd119x: Fix format of SPDX identifier
2021-07-10 01:53:39 +02:00
rtc-rv3028.c
rtc: rv3028: Fix codestyle errors
2022-10-13 23:36:52 +02:00
rtc-rv3029c2.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-rv3032.c
rtc: rv3032: let the core handle the alarm resolution
2021-11-10 00:45:57 +01:00
rtc-rv8803.c
rtc: rv8803: fix missing unlock on error in rv8803_set_time()
2022-07-26 11:29:05 +02:00
rtc-rx4581.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-rx6110.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-rx8010.c
rtc: rx8010: quiet maybe-unused variable warning
2021-02-06 00:58:25 +01:00
rtc-rx8025.c
rtc: rx8025: fix 12/24 hour mode detection on RX-8035
2022-07-26 16:49:45 +02:00
rtc-rx8581.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-rzn1.c
rtc: rzn1: Check return value in rzn1_rtc_probe
2022-12-31 13:32:49 +01:00
rtc-s3c.c
rtc: s3c: Add time range
2021-10-23 23:57:23 +02:00
rtc-s3c.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
rtc-s5m.c
rtc: s5m: drop unneeded MODULE_ALIAS
2021-09-25 23:26:37 +02:00
rtc-s35390a.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-sa1100.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sa1100.h
…
rtc-sc27xx.c
rtc: sc27xx: Fix format of SPDX identifier
2021-07-10 01:53:39 +02:00
rtc-sd3078.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-sh.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-snvs.c
rtc: snvs: Allow a time difference on clock register read
2022-12-31 13:32:49 +01:00
rtc-spear.c
rtc: spear: set range max
2022-08-09 00:56:41 +02:00
rtc-st-lpc.c
rtc: st-lpc: Add missing clk_disable_unprepare in st_rtc_probe()
2022-12-31 13:32:53 +01:00
rtc-starfire.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-stk17ta8.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-stm32.c
rtc: stm32: Fix unbalanced clk_disable_unprepare() on probe error path
2021-06-20 22:28:02 +02:00
rtc-stmp3xxx.c
rtc: stmp3xxx: Add failure handling for stmp3xxx_wdt_register()
2022-10-13 00:03:11 +02:00
rtc-sun4v.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-sun6i.c
rtc: sun6i: add support for R329 RTC
2022-07-26 11:17:01 +02:00
rtc-sunplus.c
rtc: sunplus: fix format string for printing resource
2023-02-09 11:28:11 +01:00
rtc-sunxi.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-tegra.c
rtc: tegra: Replace spin_lock_irqsave with spin_lock in hard IRQ
2021-02-06 00:50:47 +01:00
rtc-test.c
rtc: test: remove debug message
2020-12-03 23:43:23 +01:00
rtc-ti-k3.c
rtc: k3: Use devm_clk_get_enabled() helper
2022-10-13 00:31:57 +02:00
rtc-tps6586x.c
rtc: tps6586x: convert to SPDX identifier
2021-07-10 01:53:40 +02:00
rtc-tps65910.c
rtc: tps65910: Correct driver module alias
2021-08-17 23:36:22 +02:00
rtc-twl.c
…
rtc-v3020.c
rtc: v3020: remove redundant initialization of variable retval
2021-06-20 22:29:50 +02:00
rtc-vt8500.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-wilco-ec.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-wm831x.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-wm8350.c
rtc: wm8350: Handle error for wm8350_register_irq
2022-03-23 19:58:38 +01:00
rtc-x1205.c
i2c: Make remove callback return void
2022-08-16 12:46:26 +02:00
rtc-xgene.c
rtc: xgene: stop using uie_unsupported
2022-03-23 19:58:41 +01:00
rtc-zynqmp.c
rtc: zynqmp: initialize fract_tick
2022-08-08 20:35:41 +02:00
sysfs.c
rtc: sysfs: Correct kerneldoc function name hctosys_show()
2021-06-20 22:18:05 +02:00