linux/drivers/i2c
Jae Hyun Yoo 3e9efc3299 i2c: aspeed: Handle master/slave combined irq events properly
In most of cases, interrupt bits are set one by one but there are
also a lot of other cases that Aspeed I2C IP sends multiple
interrupt bits with combining master and slave events using a
single interrupt call. It happens much more in multi-master
environment than single-master. For an example, when master is
waiting for a NORMAL_STOP interrupt in its MASTER_STOP state,
SLAVE_MATCH and RX_DONE interrupts could come along with the
NORMAL_STOP in case of an another master immediately sends data
just after acquiring the bus. In this case, the NORMAL_STOP
interrupt should be handled by master_irq and the SLAVE_MATCH and
RX_DONE interrupts should be handled by slave_irq. This commit
modifies irq hadling logic to handle the master/slave combined
events properly.

Signed-off-by: Jae Hyun Yoo <jae.hyun.yoo@linux.intel.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2018-09-06 20:36:57 +02:00
..
algos i2c: algos: bit: make the error messages grepable 2018-08-30 23:11:42 +02:00
busses i2c: aspeed: Handle master/slave combined irq events properly 2018-09-06 20:36:57 +02:00
muxes Merge branch 'i2c-mux/for-next' of https://github.com/peda-r/i2c-mux into i2c/for-4.19 2018-08-04 23:05:11 +02:00
i2c-boardinfo.c i2c: i2c-boardinfo: fix memory leaks on devinfo 2017-11-27 19:14:29 +01:00
i2c-core-acpi.c i2c: core: ACPI: Make acpi_gsb_i2c_read_bytes() check i2c_transfer return value 2018-08-20 14:09:26 +02:00
i2c-core-base.c i2c: refactor function to release a DMA safe buffer 2018-08-30 23:13:15 +02:00
i2c-core-of.c i2c: Export of_i2c_get_board_info() 2018-05-22 13:42:16 +02:00
i2c-core-slave.c i2c: remove i2c_lock_adapter and use i2c_lock_bus directly 2018-07-13 00:09:37 +02:00
i2c-core-smbus.c i2c: smbus: add unlocked __i2c_smbus_xfer variant 2018-07-20 23:51:37 +02:00
i2c-core.h i2c: make i2c_check_addr_validity() static 2018-03-24 14:07:23 +01:00
i2c-dev.c treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
i2c-mux.c Merge branch 'i2c/for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2018-08-21 17:40:46 -07:00
i2c-slave-eeprom.c
i2c-smbus.c i2c: i2c-smbus: add of_i2c_setup_smbus_alert 2017-10-28 23:42:47 +02:00
i2c-stub.c treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
Kconfig Merge branch 'i2c/for-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2016-12-15 12:56:35 -08:00
Makefile i2c: don't use any __deprecated handling anymore 2018-08-24 17:26:43 +02:00