On 07/31/2015 02:00 PM, Robert ABEL wrote: > CONFIG_I2C_XILINX_ERRATA makes resetting XIIC after every > Master Transmit error configurable. > Also mention proper module name for XIIC kernel module.
Datasheet? version. > > Signed-off-by: Robert ABEL <[email protected]> > --- > drivers/i2c/busses/Kconfig | 9 ++++++++- > drivers/i2c/busses/i2c-xiic.c | 9 +++++++++ > 2 files changed, 17 insertions(+), 1 deletion(-) > > diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig > index 46d5488..3255e89 100644 > --- a/drivers/i2c/busses/Kconfig > +++ b/drivers/i2c/busses/Kconfig > @@ -886,7 +886,14 @@ config I2C_XILINX > Xilinx I2C controller. > > This driver can also be built as a module. If so, the module > - will be called xilinx_i2c. > + will be called i2c-xiic. > + > +config I2C_XILINX_ERRATA > + bool "Reset on " > + depends on I2C_XILINX > + help > + By enabling this option, the Xilinx I2C Controller will be reset > + after Master Transmit Errors. > > config I2C_XLR > tristate "XLR I2C support" > diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c > index 5c9897e..6a834bc 100644 > --- a/drivers/i2c/busses/i2c-xiic.c > +++ b/drivers/i2c/busses/i2c-xiic.c > @@ -509,6 +509,15 @@ static irqreturn_t xiic_process(int irq, void *dev_id) > break; > } > > +#if defined(CONFIG_I2C_XILINX_ERRATA) > + if (!(msg->flags & I2C_M_RD)) { > + /* dynamic mode seem to suffer from problems if we just > flush > + * fifos and the next message is a TX with len 0 (only > addr) > + * reset the IP instead of just flushing fifos > + */ > + xiic_reinit(i2c); > + } > +#endif > } > > /* Receive FIFO is full */ > Make it DT configurable. Thanks, Michal -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
