On Thu, Jan 11, 2018 at 02:47:16PM +0800, Ji-Ze Hong (Peter Hong) wrote: > The F81532/534 had auto RTS direction support for RS485 mode. > We'll read it from internal Flash with address 0x2f01~0x2f04 for 4 ports. > There are 4 conditions below: > 0: F81534_PORT_CONF_RS232. > 1: F81534_PORT_CONF_RS485. > 2: value error, default to F81534_PORT_CONF_RS232. > 3: F81534_PORT_CONF_RS485_INVERT. > > F81532/534 Clock register (offset +08h) > > Bit0: UART Enable (always on) > Bit2-1: Clock source selector > 00: 1.846MHz. > 01: 18.46MHz. > 10: 24MHz. > 11: 14.77MHz. > Bit4: Auto direction(RTS) control (RTS pin Low when TX) > Bit5: Invert direction(RTS) when Bit4 enabled (RTS pin high when TX) > > Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@xxxxxxxxx> > --- > V3: > 1: change some BIT() operation to GENMASK(). > 2: change some dev_info() to dev_dbg(). > > V2: > 1: Read the configure data from flash and save it to shadow clock > register. Series now applied with a few minor tweaks. > +#define F81534_PORT_CONF_RS232 0 > +#define F81534_PORT_CONF_RS485 BIT(0) > +#define F81534_PORT_CONF_RS485_INVERT GENMASK(1, 0) I replaced GENMASK() with your original (BIT(x) | BIT(y)) for register values like this one. > #define F81534_PORT_CONF_DISABLE_PORT BIT(3) > #define F81534_PORT_CONF_NOT_EXIST_PORT BIT(7) > #define F81534_PORT_UNAVAILABLE \ > (F81534_PORT_CONF_DISABLE_PORT | F81534_PORT_CONF_NOT_EXIST_PORT) > > +#define F81534_UART_MODE_MASK GENMASK(1, 0) And renamed this mask to F81534_PORT_CONF_MODE_MASK so its more obvious to what it applies. Thanks, Johan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
