From: Daniel Golle Date: Thu, 11 Apr 2019 17:19:49 +0000 (+0200) Subject: kernel: move and replace accepted patch X-Git-Tag: v19.07.0-rc1~792 X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=commitdiff_plain;h=b6acb7b718e3bf47f8dfa615345120aad0930bad;hp=44ae5f37fb705b7023a387b650151df09c089e6a kernel: move and replace accepted patch Signed-off-by: Daniel Golle --- diff --git a/target/linux/generic/backport-4.14/950-tty-serial-exar-generalize-rs485-setup.patch b/target/linux/generic/backport-4.14/950-tty-serial-exar-generalize-rs485-setup.patch new file mode 100644 index 0000000000..42c4705e51 --- /dev/null +++ b/target/linux/generic/backport-4.14/950-tty-serial-exar-generalize-rs485-setup.patch @@ -0,0 +1,75 @@ +From 9d9398944488cd3a3e1e0912b26fbc4d5921e547 Mon Sep 17 00:00:00 2001 +From: Daniel Golle +Date: Mon, 4 Jun 2018 23:33:07 +0200 +Subject: [PATCH] tty: serial: exar: generalize RS485 setup + +Move the non-board-specific part of the RS485 initialization from +iot2040_rs485_config function to a new generic function used also for +other boards. +This allows using TIOCGRS485 and TIOCSRS485 on boards (such as mPCIe +serial IO modules) which are hard-wired to RS485 or have jumpers for +their configurations. + +Signed-off-by: Daniel Golle +Reviewed-by: Jan Kiszka +Signed-off-by: Greg Kroah-Hartman +--- + drivers/tty/serial/8250/8250_exar.c | 38 +++++++++++++++++++---------- + 1 file changed, 25 insertions(+), 13 deletions(-) + +--- a/drivers/tty/serial/8250/8250_exar.c ++++ b/drivers/tty/serial/8250/8250_exar.c +@@ -275,8 +275,32 @@ static int xr17v35x_register_gpio(struct + return 0; + } + ++static int generic_rs485_config(struct uart_port *port, ++ struct serial_rs485 *rs485) ++{ ++ bool is_rs485 = !!(rs485->flags & SER_RS485_ENABLED); ++ u8 __iomem *p = port->membase; ++ u8 value; ++ ++ value = readb(p + UART_EXAR_FCTR); ++ if (is_rs485) ++ value |= UART_FCTR_EXAR_485; ++ else ++ value &= ~UART_FCTR_EXAR_485; ++ ++ writeb(value, p + UART_EXAR_FCTR); ++ ++ if (is_rs485) ++ writeb(UART_EXAR_RS485_DLY(4), p + UART_MSR); ++ ++ port->rs485 = *rs485; ++ ++ return 0; ++} ++ + static const struct exar8250_platform exar8250_default_platform = { + .register_gpio = xr17v35x_register_gpio, ++ .rs485_config = generic_rs485_config, + }; + + static int iot2040_rs485_config(struct uart_port *port, +@@ -309,19 +333,7 @@ static int iot2040_rs485_config(struct u + value |= mode; + writeb(value, p + UART_EXAR_MPIOLVL_7_0); + +- value = readb(p + UART_EXAR_FCTR); +- if (is_rs485) +- value |= UART_FCTR_EXAR_485; +- else +- value &= ~UART_FCTR_EXAR_485; +- writeb(value, p + UART_EXAR_FCTR); +- +- if (is_rs485) +- writeb(UART_EXAR_RS485_DLY(4), p + UART_MSR); +- +- port->rs485 = *rs485; +- +- return 0; ++ return generic_rs485_config(port, rs485); + } + + static const struct property_entry iot2040_gpio_properties[] = { diff --git a/target/linux/generic/pending-4.14/950-tty-serial-exar-generalize-rs485-setup.patch b/target/linux/generic/pending-4.14/950-tty-serial-exar-generalize-rs485-setup.patch deleted file mode 100644 index 869bf7b9b2..0000000000 --- a/target/linux/generic/pending-4.14/950-tty-serial-exar-generalize-rs485-setup.patch +++ /dev/null @@ -1,76 +0,0 @@ -From 24d5ba8ad40c3ac7903f688580c345aafa764dc7 Mon Sep 17 00:00:00 2001 -From: Daniel Golle -Date: Mon, 4 Jun 2018 14:51:29 +0200 -Subject: [PATCH] tty: serial: exar: generalize rs485 setup -To: linux-serial@vger.kernel.org, - Greg Kroah-Hartman -Cc: Linus Walleij , - Jan Kiszka - -Move the non-board-specific part of the RS485 initialization -from iot2040_rs485_config function to a new generic function -used also for other boards. -This allows using PCIe boards which are hard-wired to RS485 -or have jumpers for their configurations. - -Signed-off-by: Daniel Golle ---- - drivers/tty/serial/8250/8250_exar.c | 38 +++++++++++++++++++---------- - 1 file changed, 25 insertions(+), 13 deletions(-) - ---- a/drivers/tty/serial/8250/8250_exar.c -+++ b/drivers/tty/serial/8250/8250_exar.c -@@ -275,8 +275,32 @@ static int xr17v35x_register_gpio(struct - return 0; - } - -+static int generic_rs485_config(struct uart_port *port, -+ struct serial_rs485 *rs485) -+{ -+ bool is_rs485 = !!(rs485->flags & SER_RS485_ENABLED); -+ u8 __iomem *p = port->membase; -+ u8 value; -+ -+ value = readb(p + UART_EXAR_FCTR); -+ if (is_rs485) -+ value |= UART_FCTR_EXAR_485; -+ else -+ value &= ~UART_FCTR_EXAR_485; -+ -+ writeb(value, p + UART_EXAR_FCTR); -+ -+ if (is_rs485) -+ writeb(UART_EXAR_RS485_DLY(4), p + UART_MSR); -+ -+ port->rs485 = *rs485; -+ -+ return 0; -+} -+ - static const struct exar8250_platform exar8250_default_platform = { - .register_gpio = xr17v35x_register_gpio, -+ .rs485_config = generic_rs485_config, - }; - - static int iot2040_rs485_config(struct uart_port *port, -@@ -309,19 +333,7 @@ static int iot2040_rs485_config(struct u - value |= mode; - writeb(value, p + UART_EXAR_MPIOLVL_7_0); - -- value = readb(p + UART_EXAR_FCTR); -- if (is_rs485) -- value |= UART_FCTR_EXAR_485; -- else -- value &= ~UART_FCTR_EXAR_485; -- writeb(value, p + UART_EXAR_FCTR); -- -- if (is_rs485) -- writeb(UART_EXAR_RS485_DLY(4), p + UART_MSR); -- -- port->rs485 = *rs485; -- -- return 0; -+ return generic_rs485_config(port, rs485); - } - - static const struct property_entry iot2040_gpio_properties[] = {