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linux/drivers/rtc
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Rasmus Villemoes 0a2abbfd85 rtc: isl12022: drop redundant write to HR register 
There's nothing in the data sheet that says writing to one of the time
keeping registers is necessary to start the RTC. It does so at the
stop condition of the i2c transfer setting the WRTC bit:

  Upon initialization or power-up, the WRTC must be set to "1" to
  enable the RTC. Upon the completion of a valid write (STOP), the RTC
  starts counting.

Moreover, even if such a write to one of the timekeeping registers was
necessary, that's exactly what we do anyway just below when we
actually write the given struct rtc_time to the device.

Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Link: https://lore.kernel.org/r/20220921114624.3250848-8-linux@rasmusvillemoes.dk
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2022-10-13 00:17:21 +02:00
..
class.c
rtc: Directly use ida_alloc()/free()
2022-06-24 21:44:53 +02:00
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: Add NCT3018Y real time clock driver
2022-07-26 17:07:04 +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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
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
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-bq4802.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
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: rtc-cmos: Do not check ACPI_FADT_LOW_POWER_S0
2022-08-08 20:36:01 +02:00
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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
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: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-ds1374.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +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: drop no_irq
2022-03-23 19:58:38 +01:00
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: switch to RTC_FEATURE_UPDATE_INTERRUPT
2022-03-23 19:58:40 +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
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
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: drop redundant write to HR register
2022-10-13 00:17:21 +02:00
rtc-isl12026.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-jz4740.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
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
rtc: m41t80: switch to RTC_FEATURE_UPDATE_INTERRUPT
2022-03-23 19:58:39 +01:00
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: max8997: Fix the returned value in case of error in 'max8997_rtc_read_alarm()'
2018-11-22 18:11:35 +01:00
rtc-max8998.c
rtc: maxim: Add SPDX license identifiers
2018-08-14 23:38:45 +02:00
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: Remove printing of stray CR
2022-08-23 22:17:29 +02:00
rtc-msc313.c
rtc: msc313: Fix unintentional sign extension issues with left shift of a u16
2021-10-01 23:28:46 +02:00
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 MODULE_DEVICE_TABLE
2021-05-25 00:33:17 +02:00
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: set RTC_FEATURE_ALARM_RES_2S
2022-03-23 19:58:39 +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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
rtc-pcf85063.c
rtc: pcf85063: Add a compatible entry for pca85073a
2022-05-18 00:15:50 +02:00
rtc-pcf85363.c
rtc: use simple i2c probe
2022-06-24 21:24:02 +02:00
rtc-pic32.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201
2019-05-30 11:29:52 -07:00
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
rtc: rs5c372: fix incorrect oscillation value on r2221tl
2022-01-05 00:52:10 +01:00
rtc-rtd119x.c
rtc: rtd119x: Fix format of SPDX identifier
2021-07-10 01:53:39 +02:00
rtc-rv3028.c
rtc: rv3028: add BSM support
2021-10-18 17:20:50 +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: Fix a variable type
2022-05-25 01:24:21 +02:00
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: rework rtc_register_device() resource management
2020-11-19 12:50:12 +01:00
rtc-spear.c
rtc: spear: set range max
2022-08-09 00:56:41 +02:00
rtc-st-lpc.c
rtc: rework rtc_register_device() resource management
2020-11-19 12:50:12 +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 return value in sp_rtc_probe()
2022-01-16 23:50:34 +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: detect SoC to determine erratum fix
2022-08-23 22:25:28 +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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
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
rtc: use simple i2c probe
2022-06-24 21:24:02 +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