Ondrej Jirman 02fe0fbd8a i2c: rk3x: Handle a spurious start completion interrupt flag ... In a typical read transfer, start completion flag is being set after read finishes (notice ipd bit 4 being set): trasnfer poll=0 i2c start rk3x-i2c fdd40000.i2c: IRQ: state 1, ipd: 10 i2c read rk3x-i2c fdd40000.i2c: IRQ: state 2, ipd: 1b i2c stop rk3x-i2c fdd40000.i2c: IRQ: state 4, ipd: 33 This causes I2C transfer being aborted in polled mode from a stop completion handler: trasnfer poll=1 i2c start rk3x-i2c fdd40000.i2c: IRQ: state 1, ipd: 10 i2c read rk3x-i2c fdd40000.i2c: IRQ: state 2, ipd: 0 rk3x-i2c fdd40000.i2c: IRQ: state 2, ipd: 1b i2c stop rk3x-i2c fdd40000.i2c: IRQ: state 4, ipd: 13 i2c stop rk3x-i2c fdd40000.i2c: unexpected irq in STOP: 0x10 Clearing the START flag after read fixes the issue without any obvious side effects. This issue was dicovered on RK3566 when adding support for powering off the RK817 PMIC. Signed-off-by: Ondrej Jirman <megous@megous.com> Reviewed-by: John Keeping <john@metanate.com> Signed-off-by: Wolfram Sang <wsa@kernel.org>		2021-11-30 22:38:15 +01:00
..
algos	i2c: algo: bit: use new macro to specifiy capabilities	2021-01-22 09:59:21 +01:00
busses	i2c: rk3x: Handle a spurious start completion interrupt flag	2021-11-30 22:38:15 +01:00
muxes	i2c: muxes: i2c-arb-gpio-challenge: Demote non-conformant kernel-doc headers	2021-05-27 21:29:03 +02:00
Kconfig	i2c: add slave testunit driver	2020-09-21 11:02:17 +02:00
Makefile	i2c: add slave testunit driver	2020-09-21 11:02:17 +02:00
i2c-boardinfo.c	i2c: Remove support for dangling device properties	2021-04-10 21:43:02 +02:00
i2c-core-acpi.c	More ACPI updates for 5.16-rc1	2021-11-10 11:52:40 -08:00
i2c-core-base.c	i2c: Allow an ACPI driver to manage the device's power state during probe	2021-11-03 19:03:55 +01:00
i2c-core-of.c	i2c: use my kernel.org address from now on	2020-05-05 16:29:09 +02:00
i2c-core-slave.c	i2c: slave: add sanity check when unregistering	2020-07-28 18:37:17 +02:00
i2c-core-smbus.c	i2c: core-smbus: Expose PEC calculate function for generic use	2021-06-25 17:09:34 +02:00
i2c-core.h	i2c: acpi: Remove dead code, i.e. i2c_acpi_match_device()	2020-08-25 09:22:09 +02:00
i2c-dev.c	Merge branch 'i2c/for-mergewindow' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux	2021-08-31 14:34:01 -07:00
i2c-mux.c	i2c: mux: add sysfs header	2019-06-22 07:32:33 +02:00
i2c-slave-eeprom.c	i2c: busses: Use fallthrough pseudo-keyword	2020-07-23 22:04:08 +02:00
i2c-slave-testunit.c	i2c: testunit: add support for block process calls	2021-02-12 11:11:04 +01:00
i2c-smbus.c	i2c: smbus: add core function handling SMBus host-notify	2020-09-09 10:38:28 +02:00
i2c-stub.c	i2c: stub: remove definition of DEBUG	2021-01-17 13:00:10 +01:00