ff1e858180
Most prominently, add support for a transfer where a write with no-stop flag is followed by a write with no-start flag. Logically, it's a single larger write, but consumers may want to split it like that because one part can be a register ID and the other part can be data to be written to (or starting at) that register. Such a transfer can be created by i2c tool and iic(4) driver, e.g., for an EEPROM write at specific offset: i2c -m tr -a 0x50 -d w -w 16 -o 0 -c 8 -v < /dev/random This should be fixed by new code that handles the end of data transfer for both reads and writes. It handles two existing conditions and one new. Namely: - the last message has been completed -- end of transfer; - a message has been completed and the next one requires the start condition; - a message has been completed and the next one should be sent without the start condition. In the last case we simply switch to the next message and start sending its data. Reads without the start condition are not supported yet, though. That's because we NACK the last byte of the previous message, so the device stops sending data. To fix this we will need to add a look-ahead at the next message when handling the penultimate byte of the current one. This change also fixed a bug where msg_idx was not incremented after a read message. Apparently, typically a read message is a last message in a transfer, so the bug did not cause much trouble. PR: 258994 MFC after: 3 weeks |
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.. | ||
gpio | ||
mux | ||
pmic | ||
rtc | ||
twsi | ||
acpi_iicbus.c | ||
ad7417.c | ||
ad7418.c | ||
adm1030.c | ||
ads111x.c | ||
adt746x.c | ||
ds13rtc.c | ||
ds1307.c | ||
ds1307reg.h | ||
ds1631.c | ||
ds1672.c | ||
ds1775.c | ||
ds3231.c | ||
ds3231reg.h | ||
htu21.c | ||
icee.c | ||
if_ic.c | ||
iic_recover_bus.c | ||
iic_recover_bus.h | ||
iic.c | ||
iic.h | ||
iicbb_if.m | ||
iicbb.c | ||
iicbus_if.m | ||
iicbus.c | ||
iicbus.h | ||
iichid.c | ||
iicoc_fdt.c | ||
iicoc_pci.c | ||
iicoc.c | ||
iicoc.h | ||
iiconf.c | ||
iiconf.h | ||
iicsmb.c | ||
isl12xx.c | ||
lm75.c | ||
max6690.c | ||
max44009.c | ||
nxprtc.c | ||
ofw_iicbus.c | ||
pcf8591.c | ||
rtc8583.c | ||
s35390a.c | ||
sy8106a.c | ||
syr827.c |