Rework the common helper function for retrieving rs485 properties to be platform agnostic (patch [1/5]) and to allow specifying the RTS polarity (patch [2/5] and [3/5]). Amend the fsl_lpuart and imx drivers to take advantage of this and fix a bunch of bugs while at it (patch [4/5] and [5/5]). Note that Michal Oleszczyk posted a patch yesterday which documents the "rs485-rts-active-high" property supported by omap-serial in a way which suggests that *all* drivers default to active low, which is not the case (all other drivers default to active high). I think the present series is a better approach, but let's have a technical discussion about that. I posted an earlier version of patch [1/5] a while back but withdrew it because I wanted to change uart_get_rs485_mode() to take a struct dev and a struct serial_rs485, instead of a struct uart_port (which seemed too fragile on second thought). That change has been made now. Thanks, Lukas Lukas Wunner (5): serial: Make retrieval of rs485 properties platform-agnostic dt-bindings: serial: Add common rs485 binding for RTS polarity serial: core: Support common rs485 binding for RTS polarity serial: fsl_lpuart: Support common rs485 binding for RTS polarity serial: imx: Support common rs485 binding for RTS polarity .../devicetree/bindings/serial/fsl-imx-uart.txt | 3 ++- .../devicetree/bindings/serial/fsl-lpuart.txt | 3 ++- .../devicetree/bindings/serial/omap_serial.txt | 1 + Documentation/devicetree/bindings/serial/rs485.txt | 1 + drivers/tty/serial/atmel_serial.c | 2 +- drivers/tty/serial/fsl_lpuart.c | 15 ++++---------- drivers/tty/serial/imx.c | 11 ++++++++--- drivers/tty/serial/omap-serial.c | 11 +++++++---- drivers/tty/serial/serial_core.c | 23 +++++++++++++++------- include/linux/serial_core.h | 3 +-- 10 files changed, 43 insertions(+), 30 deletions(-) -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
