linux/drivers/tty/serial, branch v4.6

Revert "serial: 8250: Add hardware dependency to RT288X option"

2016-04-19T06:17:37Z

This reverts commit 8d2acdb9fc3a544ab0442634531834d6007b5467. It's causing problems, and somehow I missed that Peter didn't like it at all :( So revert it for now until it gets sorted out. Reported-by: Mason Cc: Peter Hurley Cc: Jean Delvare Cc: Mans Rullgard Cc: Jiri Slaby Cc: John Crispin Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org

tty/serial/8250: fix RS485 half-duplex RX

2016-04-19T06:15:38Z

When in half-duplex mode RX will be disabled before TX, but not enabled after deactivating transmitter. This patch enables UART_IER_RLSI and UART_IER_RDI interrupts after TX is over. Cc: Matwey V. Kornilov Signed-off-by: Yegor Yefremov Fixes: e490c9144cfa ("tty: Add software emulated RS485 support for 8250") Acked-by: Matwey V. Kornilov Signed-off-by: Greg Kroah-Hartman

Revert "serial-uartlite: Constify uartlite_be/uartlite_le"

2016-04-19T06:15:38Z

This reverts commit 2905697a82eaf20606ced164d853b52d1b94aaa8. The commit introduced two build warnings: drivers/tty/serial/uartlite.c: In function ‘ulite_request_port’: drivers/tty/serial/uartlite.c:348:21: warning: assignment discards ‘const’ qualifier from pointer target type port->private_data = &uartlite_be; ^ drivers/tty/serial/uartlite.c:354:22: warning: assignment discards ‘const’ qualifier from pointer target type port->private_data = &uartlite_le; ^ Signed-off-by: Sudip Mukherjee Cc: Maarten Brock Cc: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman

serial: 8250: describe CONFIG_SERIAL_8250_RSA

2016-03-08T00:11:14Z

CONFIG_SERIAL_8250_RSA has waited for a long time to have meaningful help text so let's finally describe what this option actually does. Signed-off-by: Maciej S. Szmigiero Signed-off-by: Greg Kroah-Hartman

serial: samsung: optimize UART rx fifo access routine

2016-03-08T00:11:14Z

This patch optimizes UART rx fifo access routine by reading UART SFR when necessary. At first, the "fifocnt" variable will be initialized as Rx FIFO count. So we don't need to access UFSTAT(FIFO status) register every time to check FIFO count because we know that count with "fifocnt". After all data were read out from Rx FIFO, the "fifocnt" will be set as 0. Lastly, UFSTAT will be accessed again to check whether the data remains by any chance. Signed-off-by: Youngmin Nam Reviewed-by: Jung-Ick Guack Signed-off-by: Greg Kroah-Hartman

serial: pl011: add mark/space parity support

2016-03-08T00:11:14Z

PL011 UART has hardware mark/space parity ability, this trivial patch adds support for it. Tested on Raspberry Pi v1, v2 (BCM2835 and BCM2836) Signed-off-by: Ed Spiridonov Signed-off-by: Greg Kroah-Hartman

tty: serial: 8250: add MOXA Smartio MUE boards support

2016-03-08T00:11:14Z

Add support for : - CP-102E: 2 ports RS232 PCIE card - CP-102EL: 2 ports RS232 PCIE card - CP-132EL: 2 ports RS422/485 PCIE card - CP-114EL: 4 ports RS232/422/485 PCIE card - CP-104EL-A: 4 ports RS232 PCIE card - CP-168EL-A: 8 ports RS232 PCIE card - CP-118EL-A: 8 ports RS232/422/485 PCIE card - CP-118E-A: 8 ports RS422/485 PCIE card - CP-138E-A: 8 ports RS422/485 PCIE card - CP-134EL-A: 4 ports RS422/485 PCIE card - CP-116E-A (A): 8 ports RS232/422/485 PCIE card - CP-116E-A (B): 8 ports RS232/422/485 PCIE card This patch is based on information extracted from vendor mxupcie driver available on MOXA website. I was able to test it on a CP-168EL-A on PC. Signed-off-by: Mathieu OTHACEHE Reviewed-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman

serial: 8250: convert drivers to use up_to_u8250p()

2016-03-08T00:11:14Z

up_to_u8250p() casts struct uart_port * to struct uart_8250_port *. Update code to use it instead of open coded variant. Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman

serial: 8250/mediatek: fix building with SERIAL_8250=m

2016-03-08T00:11:14Z

The Mediatek 8250 driver has a 'bool' Kconfig symbol, but that breaks when SERIAL_8250 is a loadable module: drivers/tty/built-in.o: In function `mtk8250_set_termios': :(.text+0x1bee8): undefined reference to `serial8250_do_set_termios' :(.text+0x1bf10): undefined reference to `uart_get_baud_rate' :(.text+0x1c09c): undefined reference to `uart_get_divisor' drivers/tty/built-in.o: In function `mtk8250_do_pm': :(.text+0x1c0d0): undefined reference to `serial8250_do_pm' drivers/tty/built-in.o: In function `mtk8250_probe': :(.text+0x1c2e4): undefined reference to `serial8250_register_8250_port' serial/8250/8250_mtk.c:287:242: error: data definition has no type or storage class [-Werror] serial/8250/8250_mtk.c:287:122: error: 'mtk8250_platform_driver_init' defined but not used [-Werror=unused-function] This changes the symbol to a 'tristate', so the dependency on SERIAL_8250 also works when that is set to 'm'. To actually build the driver, we also need to include . Signed-off-by: Arnd Bergmann Acked-by: Matthias Brugger Signed-off-by: Greg Kroah-Hartman

serial: 8250/ingenic: fix building with SERIAL_8250=m

2016-03-08T00:11:14Z

The Ingenic 8250 driver has a 'bool' Kconfig symbol, but that breaks when SERIAL_8250 is a loadable module: drivers/tty/built-in.o: In function `ingenic_uart_probe': 8250_ingenic.c:(.text+0x1c1a0): undefined reference to `serial8250_register_8250_port' This changes the symbol to a 'tristate', plus a dependency on SERIAL_8250, which makes it work again. Unlike the other soc-specific backends, this one has no dependency on an architecture or a platform. I'm adding a dependency on MIPS || COMPILE_TEST as well here, to avoid showing the driver on architectures that are not interested in it. Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman