Chris Zhong c412c6034a drivers/rtc/rtc-rk808.c: fix rtc time reading issue ...

After we set the GET_TIME bit, the rtc time can't be read immediately.  We
should wait up to 31.25 us, about one cycle of 32khz.  Otherwise reading
RTC time will return a old time.  If we clear the GET_TIME bit after
setting, the time of i2c transfer is certainly more than 31.25us.

Doug said:

: I think we are safe.  At 400kHz (the max speed of this part) each bit can
: be transferred no faster than 2.5us.  In order to do a valid i2c
: transaction we need to _at least_ write the address of the device and the
: data onto the bus, which is 16 bits.  16 * 2.5us = 40us.  That's above the
: 31.25us

[akpm@linux-foundation.org: tweak comment per review discussion]
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Reviewed-by: Doug Anderson <dianders@chromium.org>
Cc: Sonny Rao <sonnyrao@chromium.org>
Cc: Heiko Stübner <heiko@sntech.de>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2015-02-13 21:21:43 -08:00

..

class.c

rtc: Update suspend/resume timing to use 64bit time

2014-11-21 12:00:00 -08:00

hctosys.c

rtc: Remove redundant rtc_valid_tm() from rtc_hctosys()

2015-01-23 17:21:57 -08:00

interface.c

rtc: Update interface.c to use y2038-safe time interfaces

2015-01-23 17:21:55 -08:00

Kconfig

powerpc updates for 3.19

2014-12-11 17:48:14 -08:00

Makefile

rtc/tpo: Driver to support rtc and wakeup on PowerNV platform

2014-11-17 18:04:01 +11:00

rtc-88pm80x.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-88pm860x.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ab3100.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ab8500.c

Driver core patches for 3.19-rc1

2014-12-14 16:10:09 -08:00

rtc-as3722.c

drivers/rtc/rtc-as3722.c: use SIMPLE_DEV_PM_OPS macro

2014-04-03 16:21:22 -07:00

rtc-at32ap700x.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-at91rm9200.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-at91rm9200.h

…

rtc-at91sam9.c

drivers/rtc/rtc-at91sam9.c: constify struct regmap_config

2015-02-13 21:21:43 -08:00

rtc-au1xxx.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-bfin.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-bq32k.c

drivers/rtc/rtc-bq32k.c: fix register value

2014-10-29 16:33:14 -07:00

rtc-bq4802.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-cmos.c

rtc-cmos: fix wakeup from S5 without CONFIG_PM_SLEEP

2014-10-14 02:18:19 +02:00

rtc-coh901331.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-core.h

…

rtc-da9052.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-da9055.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-da9063.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-davinci.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-dev.c

rtc: Update rtc-dev to use y2038-safe time interfaces

2015-01-23 17:21:56 -08:00

rtc-dm355evm.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ds1216.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ds1286.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ds1302.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ds1305.c

rtc: fix potential race condition

2014-04-03 16:21:16 -07:00

rtc-ds1307.c

rtc: ds1307: add support for mcp7940x chips

2014-12-10 17:41:15 -08:00

rtc-ds1343.c

drivers/rtc/rtc-ds1343.c: add support of nvram for maxim dallas rtc ds1343

2014-08-08 15:57:19 -07:00

rtc-ds1347.c

rtc: add support for maxim dallas rtc ds1347

2014-04-03 16:21:23 -07:00

rtc-ds1374.c

drivers/rtc/rtc-ds1374.c: add watchdog support

2014-12-10 17:41:15 -08:00

rtc-ds1390.c

rtc: rtc-ds1390: remove unnecessary OOM messages

2014-04-03 16:21:17 -07:00

rtc-ds1511.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ds1553.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ds1672.c

rtc: fix potential race condition

2014-04-03 16:21:16 -07:00

rtc-ds1742.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ds2404.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ds3232.c

drivers/rtc/rtc-ds3232.c: enable ds3232 to work as wakeup source

2014-04-03 16:21:22 -07:00

rtc-ds3234.c

…

rtc-efi-platform.c

rtc: ia64: allow other architectures to use EFI RTC

2014-08-08 15:57:19 -07:00

rtc-efi.c

* Move efivarfs from the misc filesystem section to pseudo filesystem,

2015-01-29 19:16:40 +01:00

rtc-em3027.c

drivers/rtc/rtc-em3027.c: remove empty function

2013-07-03 16:07:56 -07:00

rtc-ep93xx.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-fm3130.c

drivers/rtc/rtc-fm3130.c: remove empty function

2013-07-03 16:07:56 -07:00

rtc-generic.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-hid-sensor-time.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-hym8563.c

drivers/rtc/rtc-hym8563.c: add optional clock-output-names property

2014-06-06 16:08:08 -07:00

rtc-imxdi.c

drivers/rtc/rtc-imxdi.c: add more known register bits

2015-02-13 21:21:43 -08:00

rtc-isl1208.c

drivers/rtc/rtc-isl1208.c: use devm_* APIs

2013-11-13 12:09:27 +09:00

rtc-isl12022.c

rtc: make of_device_ids const

2014-10-14 02:18:17 +02:00

rtc-isl12057.c

drivers/rtc/rtc-isl12057.c: constify struct regmap_config

2015-02-13 21:21:43 -08:00

rtc-jz4740.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-lib.c

rtc/lib: Provide y2038 safe rtc_tm_to_time()/rtc_time_to_tm() replacement

2014-11-21 12:00:00 -08:00

rtc-lp8788.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-lpc32xx.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-ls1x.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-m41t80.c

drivers/rtc/rtc-m41t80.c: add support for MicroCrystal rv4162

2014-06-06 16:08:07 -07:00

rtc-m41t93.c

drivers/rtc/rtc-m41t93.c: remove empty function

2013-07-03 16:07:56 -07:00

rtc-m41t94.c

drivers/rtc/rtc-m41t94.c: remove empty function

2013-07-03 16:07:57 -07:00

rtc-m48t35.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-m48t59.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-m48t86.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-max6900.c

drivers/rtc/rtc-max6900.c: remove redundant checks

2013-11-13 12:09:27 +09:00

rtc-max6902.c

drivers/rtc/rtc-max6902.c: remove empty function

2013-07-03 16:07:57 -07:00

rtc-max8907.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-max8925.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-max8997.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-max8998.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-max77686.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-max77802.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-mc13xxx.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-mcp795.c

drivers/rtc: add support for Microchip MCP795

2014-06-06 16:08:08 -07:00

rtc-moxart.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-mpc5121.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-mrst.c

drivers/rtc/rtc-mrst.c: remove redundant dev_set_drvdata

2013-11-13 12:09:27 +09:00

rtc-msm6242.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-mv.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-mxc.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-nuc900.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-omap.c

Driver core patches for 3.19-rc1

2014-12-14 16:10:09 -08:00

rtc-opal.c

rtc/tpo: Driver to support rtc and wakeup on PowerNV platform

2014-11-17 18:04:01 +11:00

rtc-palmas.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-pcap.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-pcf2123.c

drivers/rtc/rtc-pcf2123.c: add support for devicetree

2015-02-13 21:21:42 -08:00

rtc-pcf2127.c

drivers/rtc/rtc-pcf2127.c: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO

2014-01-23 16:37:00 -08:00

rtc-pcf8523.c

drivers/rtc/rtc-pcf8523.c: fix month definition

2014-05-06 13:04:58 -07:00

rtc-pcf8563.c

rtc: pcf8563: clear expired alarm at boot time

2014-12-10 17:41:15 -08:00

rtc-pcf8583.c

rtc: use c99 initializers in structures

2014-10-14 02:18:17 +02:00

rtc-pcf50633.c

…

rtc-pcf85063.c

rtc: add pcf85063 support

2014-08-08 15:57:20 -07:00

rtc-pl030.c

drivers/rtc/rtc-pl030.c: use devm_kzalloc() instead of kmalloc()

2013-11-13 12:09:31 +09:00

rtc-pl031.c

drivers/rtc/rtc-pl03x.c: remove unnecessary amba_set_drvdata()

2013-11-13 12:09:31 +09:00

rtc-pm8xxx.c

Merge branch 'platform/remove_owner' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next

2014-11-03 19:53:56 -08:00

rtc-proc.c

…

rtc-ps3.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-puv3.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-pxa.c

drivers/rtc/rtc-pxa.c: make of_device_id array const

2014-06-06 16:08:09 -07:00

rtc-r9701.c

…

rtc-rc5t583.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-rk808.c

drivers/rtc/rtc-rk808.c: fix rtc time reading issue

2015-02-13 21:21:43 -08:00

rtc-rp5c01.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-rs5c313.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-rs5c348.c

drivers/rtc/rtc-rs5c348.c: use dev_get_platdata()

2013-11-13 12:09:29 +09:00

rtc-rs5c372.c

drivers/rtc/rtc-rs5c372.c: use %*ph to dump small buffers

2014-10-14 02:18:19 +02:00

rtc-rv3029c2.c

drivers/rtc/rtc-rv3029c2.c: fix potential race condition

2014-04-03 16:21:24 -07:00

rtc-rx4581.c

drivers/rtc/rtc-rx4581.c: remove empty function

2013-07-03 16:07:58 -07:00

rtc-rx8025.c

rtc: rtc-rx8025: remove unnecessary OOM messages

2014-04-03 16:21:18 -07:00

rtc-rx8581.c

drivers/rtc/rtc-rx8581.c: add SMBus-only adapters support

2014-01-23 16:37:00 -08:00

rtc-s3c.c

Merge branch 'platform/remove_owner' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux into driver-core-next

2014-11-03 19:53:56 -08:00

rtc-s3c.h

…

rtc-s5m.c

drivers/rtc/rtc-s5m.c: terminate s5m_rtc_id array with empty element

2015-01-26 13:37:19 -08:00

rtc-s35390a.c

…

rtc-sa1100.c

drivers/rtc/rtc-sa1100.c: make of_device_id array const

2014-06-06 16:08:09 -07:00

rtc-sh.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-sirfsoc.c

Driver core patches for 3.19-rc1

2014-12-14 16:10:09 -08:00

rtc-snvs.c

Driver core patches for 3.19-rc1

2014-12-14 16:10:09 -08:00

rtc-spear.c

rtc: rtc-spear: remove unnecessary OOM messages

2014-04-03 16:21:18 -07:00

rtc-starfire.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-stk17ta8.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-stmp3xxx.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-sun4v.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-sun6i.c

rtc: sun6i: Add sun6i RTC driver

2014-09-19 12:39:19 +02:00

rtc-sunxi.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-sysfs.c

rtc: convert class code to use dev_groups

2013-07-29 13:10:58 -07:00

rtc-tegra.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-test.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-tile.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-tps6586x.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-tps65910.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-tps80031.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-twl.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-tx4939.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-v3020.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-vr41xx.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-vt8500.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

rtc-wm831x.c

drivers/rtc/rtc-wm831x.c: remove empty function

2013-07-03 16:07:59 -07:00

rtc-wm8350.c

…

rtc-x1205.c

rtc: fix potential race condition

2014-04-03 16:21:16 -07:00

rtc-xgene.c

rtc: drop owner assignment from platform_drivers

2014-10-20 16:21:31 +02:00

systohc.c

rtc: Convert rtc_set_ntp_time() to use timespec64

2015-01-23 17:21:57 -08:00