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linux/drivers/rtc
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Alejandro González d76a81d0c2 rtc: sun6i: Allow using as wakeup source from suspend 
This patch allows userspace to set up wakeup alarms on any RTC handled by the
sun6i driver, and adds the necessary PM operations to allow resuming from
suspend when the configured wakeup alarm fires a IRQ. Of course, that the
device actually resumes depends on the suspend state and how a particular
hardware reacts to it, but that is out of scope for this patch.

I've tested these changes on a Pine H64 model B, which contains a
Allwinner H6 SoC, with the help of CONFIG_PM_TEST_SUSPEND kernel option.
These are the interesting outputs from the kernel and commands which
show that it works. As every RTC handled by this driver is largely the
same, I think that it shouldn't introduce any regression on other SoCs,
but I may be wrong.

[    1.092705] PM: test RTC wakeup from 'freeze' suspend
[    1.098230] PM: suspend entry (s2idle)
[    1.212907] PM: suspend devices took 0.080 seconds
(The SoC freezes for some seconds)
[    3.197604] PM: resume devices took 0.104 seconds
[    3.215937] PM: suspend exit

[    1.092812] PM: test RTC wakeup from 'mem' suspend
[    1.098089] PM: suspend entry (deep)
[    1.102033] PM: suspend exit
[    1.105205] PM: suspend test failed, error -22

In any case, the RTC alarm interrupt gets fired as exptected:

$ echo +5 > /sys/class/rtc/rtc0/wakealarm && sleep 5 && grep rtc /proc/interrupts
 29:          1          0          0          0     GICv2 133 Level     7000000.rtc

Signed-off-by: Alejandro González <alejandro.gonzalez.correo@gmail.com>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Link: https://lore.kernel.org/r/20190821210056.11995-1-alejandro.gonzalez.correo@gmail.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2019-09-01 11:01:02 +02:00
..
class.c rtc: class: add debug message when registration fails 2019-08-20 21:44:45 +02:00
dev.c rtc: core: correct trivial checkpatch warnings 2019-04-04 10:07:08 +02:00
hctosys.c rtc: core: correct trivial checkpatch warnings 2019-04-04 10:07:08 +02:00
interface.c rtc: interface: Change type of 'count' from int to u64 2019-07-13 13:53:22 +02:00
Kconfig rtc: pcf2127: bugfix: watchdog build dependency 2019-08-27 18:24:15 +02:00
lib.c rtc: lib: check whether tm->tm_year in int32 range 2019-04-06 15:05:31 +02:00
Makefile rtc: fsl-ftm-alarm: add FTM alarm driver 2019-08-23 16:20:50 +02:00
nvmem.c rtc: core: correct trivial checkpatch warnings 2019-04-04 10:07:08 +02:00
proc.c rtc: core: correct trivial checkpatch warnings 2019-04-04 10:07:08 +02:00
rtc-88pm80x.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-88pm860x.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-ab-b5ze-s3.c rtc: ab-b5ze-s3: correct checkpatch issues 2019-04-04 10:07:08 +02:00
rtc-ab-eoz9.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-ab3100.c rtc: ab3100: convert to SPDX identifier 2019-04-11 16:42:55 +02:00
rtc-ab8500.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
rtc-abx80x.c rtc: abx80x: remove useless .remove 2019-03-18 03:36:01 +01:00
rtc-ac100.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-armada38x.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-as3722.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
rtc-asm9260.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-aspeed.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-at91rm9200.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-at91rm9200.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-at91sam9.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-au1xxx.c rtc: stop validating rtc_time in .read_time 2018-03-02 10:09:58 +01:00
rtc-bd70528.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-bq32k.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +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: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-cadence.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-cmos.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-coh901331.c rtc: coh901331: convert to SPDX identifier 2019-04-08 14:40:12 +02:00
rtc-core.h rtc: move rtc_add_group/s definitions 2018-09-28 14:20:59 +02:00
rtc-cpcap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
rtc-cros-ec.c rtc: cros-ec: Fail suspend/resume if wake IRQ can't be configured 2019-03-20 11:36:46 +01:00
rtc-da9052.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-da9055.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-da9063.c RTC for 5.2 2019-05-09 14:46:33 -07:00
rtc-davinci.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-digicolor.c rtc: digicolor: convert to SPDX identifier 2019-05-08 22:14:31 +02:00
rtc-dm355evm.c rtc: dm355evm: convert to SPDX identifier 2019-04-04 10:07:09 +02:00
rtc-ds1216.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-ds1286.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-ds1302.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 377 2019-06-05 17:37:10 +02:00
rtc-ds1305.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-ds1307.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-ds1343.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1347.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1374.c *: convert stream-like files from nonseekable_open -> stream_open 2019-05-06 17:46:41 +03:00
rtc-ds1390.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1511.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1553.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1672.c rtc: ds1672: remove unnecessary check 2019-08-21 09:57:23 +02:00
rtc-ds1685.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds1742.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ds2404.c rtc: ds2404: use hw endiannes variable 2019-05-23 17:42:25 +02:00
rtc-ds3232.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-efi-platform.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rtc-efi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-em3027.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-ep93xx.c rtc: ep93xx: fix checkpatch issues 2019-04-19 22:37:16 +02:00
rtc-fm3130.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-fsl-ftm-alarm.c rtc: fsl-ftm-alarm: add FTM alarm driver 2019-08-23 16:20:50 +02:00
rtc-ftrtc010.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
rtc-generic.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-goldfish.c rtc: goldfish: convert to SPDX identifier 2019-04-04 10:07:09 +02:00
rtc-hid-sensor-time.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 335 2019-06-05 17:37:06 +02:00
rtc-hym8563.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
rtc-imx-sc.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-imxdi.c rtc: imxdi: use devm_platform_ioremap_resource() to simplify code 2019-07-22 22:16:14 +02:00
rtc-isl1208.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-isl12022.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-isl12026.c rtc: isl12026: convert to i2c_new_dummy_device 2019-07-22 22:30:19 +02:00
rtc-jz4740.c rtc: remove superfluous error message 2019-08-21 09:57:23 +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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-lpc32xx.c rtc: lpc32xx: convert to SPDX identifier 2019-04-12 12:23:20 +02:00
rtc-ls1x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-m41t80.c RTC for 5.3 2019-07-17 10:03:50 -07:00
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 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-m48t59.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-m48t86.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-max6900.c rtc: max6900: remove useless indirection 2018-03-17 14:20:46 +01:00
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: convert to devm_i2c_new_dummy_device() 2019-09-01 09:18:35 +02:00
rtc-mc13xxx.c rtc: mc13xxx: fix style issue 2019-04-16 18:06:54 +02:00
rtc-mc146818-lib.c treewide: Add SPDX license identifier for missed files 2019-05-21 10:50:45 +02:00
rtc-mcp795.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-meson-vrtc.c rtc: Add Amlogic Virtual Wake RTC 2019-08-22 23:08:32 +02:00
rtc-meson.c rtc: meson: remove useless rtc_nvmem_unregister call 2019-02-17 21:28:39 +01:00
rtc-moxart.c
rtc-mpc5121.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-mrst.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
rtc-msm6242.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-mt6397.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-mt7622.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-mv.c rtc: mv: add range 2019-04-04 10:06:54 +02:00
rtc-mxc.c rtc: mxc: use spin_lock_irqsave instead of spin_lock_irq in IRQ context 2019-08-12 23:04:25 +02:00
rtc-mxc_v2.c rtc: mxc_v2: use devm_platform_ioremap_resource() to simplify code 2019-07-22 22:16:12 +02:00
rtc-omap.c ARM: SoC-related driver updates 2019-05-16 09:19:14 -07:00
rtc-opal.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114 2019-05-24 17:39:01 +02:00
rtc-palmas.c
rtc-pcap.c rtc: pcap: convert to SPDX identifier 2019-05-08 22:14:36 +02:00
rtc-pcf2123.c rtc: pcf2123: add proper compatible string 2019-08-20 21:42:19 +02:00
rtc-pcf2127.c rtc: pcf2127: bugfix: watchdog build dependency 2019-08-27 18:24:15 +02:00
rtc-pcf8523.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-pcf8563.c rtc: pcf8563: let the core handle range offsetting 2019-09-01 10:57:47 +02:00
rtc-pcf8583.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +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 RTC_VL_READ/RTC_VL_CLR support 2019-04-04 10:07:11 +02:00
rtc-pcf85363.c rtc: pcf85363/pcf85263: fix regmap error in set_time 2019-09-01 08:48:28 +02:00
rtc-pic32.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-pl030.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-pl031.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-pm8xxx.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-ps3.c rtc: ps3: set range 2019-04-04 10:07:10 +02:00
rtc-puv3.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-pxa.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-r7301.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-r9701.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-rc5t583.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
rtc-rk808.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-rp5c01.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
rtc-rs5c313.c
rtc-rs5c348.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-rs5c372.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-rtd119x.c rtc: Add Realtek RTD1295 2017-09-05 09:55:02 +02:00
rtc-rv3028.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-rv3029c2.c rtc: rv3029: revert error handling patch to rv3029_eeprom_write() 2019-08-21 09:57:23 +02:00
rtc-rv8803.c rtc: remove superfluous error message 2019-08-21 09:57:23 +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: rx6110: declare missing of table 2019-04-29 15:53:42 +02:00
rtc-rx8010.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-rx8025.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-rx8581.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-s3c.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +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: convert to i2c_new_dummy_device 2019-07-23 20:34:31 +02:00
rtc-s35390a.c rtc: s35390a: convert to devm_i2c_new_dummy_device() 2019-09-01 09:18:35 +02:00
rtc-sa1100.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-sa1100.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rtc-sc27xx.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-sd3078.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-sh.c RTC for 5.2 2019-05-09 14:46:33 -07:00
rtc-sirfsoc.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4 2019-05-21 11:28:40 +02:00
rtc-snvs.c rtc: snvs: switch to rtc_time64_to_tm/rtc_tm_to_time64 2019-09-01 08:48:23 +02:00
rtc-spear.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-st-lpc.c RTC for 5.3 2019-07-17 10:03:50 -07:00
rtc-starfire.c rtc: stop validating rtc_time after rtc_time_to_tm 2018-03-01 10:49:41 +01:00
rtc-stk17ta8.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-stm32.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-stmp3xxx.c rtc: stmp3xxx: convert to SPDX identifier 2019-04-11 16:42:55 +02:00
rtc-sun4v.c rtc: sun4v: switch to SPDX identifier 2019-04-04 10:07:10 +02:00
rtc-sun6i.c rtc: sun6i: Allow using as wakeup source from suspend 2019-09-01 11:01:02 +02:00
rtc-sunxi.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-tegra.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-test.c rtc: test: enable wakeup flags 2019-05-23 17:44:52 +02:00
rtc-tps6586x.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-tps65910.c rtc: remove superfluous error message 2019-08-21 09:57:23 +02:00
rtc-tps80031.c
rtc-twl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-tx4939.c rtc: Use dev_get_drvdata() 2019-04-29 15:53:43 +02:00
rtc-v3020.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-vr41xx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
rtc-vt8500.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-wilco-ec.c platform/chrome: wilco_ec: Standardize mailbox interface 2019-04-15 16:07:42 +02:00
rtc-wm831x.c rtc: wm831x: Add IRQF_ONESHOT flag 2019-07-13 21:39:51 +02:00
rtc-wm8350.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
rtc-x1205.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
rtc-xgene.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
rtc-zynqmp.c rtc: Remove dev_err() usage after platform_get_irq() 2019-08-13 10:53:10 +02:00
sysfs.c rtc: core: correct trivial checkpatch warnings 2019-04-04 10:07:08 +02:00
systohc.c rtc: drop set_mms and set_mmss64 2019-05-08 22:14:36 +02:00