kernel/linux.git/include/uapi/linux/serial_core.h, branch v6.1.168

serial: remove VR41XX serial driver

2022-07-16T06:16:01+00:00

Commit d3164e2f3b0a ("MIPS: Remove VR41xx support") removed support for MIPS VR41xx platform, so remove exclusive drivers for this platform, too. Signed-off-by: Thomas Bogendoerfer Link: https://lore.kernel.org/r/20220715140322.135825-1-tsbogend@alpha.franken.de Signed-off-by: Greg Kroah-Hartman

serial: sunplus-uart: Add Sunplus SoC UART Driver

2022-02-26T09:03:21+00:00

Add Sunplus SoC UART Driver. SP7021 UART block contains 5 UARTs. There are UART0~4 that supported in SP7021, the features list as below. Support Full-duplex communication. Support data packet length configurable. Support stop bit number configurable. Support force break condition. Support baud rate configurable. Support error detection and report. Support RXD Noise Rejection Vote configurable. UART0 pinout only support TX/RX two pins. UART1 to UART4 pinout support TX/RX/CTS/RTS four pins. Normally UART0 used for kernel console, also can be used for normal uart. Command line set "console=ttySUP0,115200", SUP means Sunplus Uart Port. UART driver probe will create path named "/dev/ttySUPx". https://sunplus.atlassian.net/wiki/spaces/doc/pages/1873412290/13.+Universal+Asynchronous+Receiver+Transmitter+UART Signed-off-by: Hammer Hsieh Link: https://lore.kernel.org/r/1645522563-17183-3-git-send-email-hammerh0314@gmail.com Signed-off-by: Greg Kroah-Hartman

serial: 8250_aspeed_vuart: add PORT_ASPEED_VUART port type

2022-02-21T18:48:34+00:00

Commit 54da3e381c2b ("serial: 8250_aspeed_vuart: use UPF_IOREMAP to set up register mapping") fixed a bug that had, as a side-effect, prevented the 8250_aspeed_vuart driver from enabling the VUART's FIFOs. However, fixing that (and hence enabling the FIFOs) has in turn revealed what appears to be a hardware bug in the ASPEED VUART in which the host-side THRE bit doesn't get if the BMC-side receive FIFO trigger level is set to anything but one byte. This causes problems for polled-mode writes from the host -- for example, Linux kernel console writes proceed at a glacial pace (less than 100 bytes per second) because the write path waits for a 10ms timeout to expire after every character instead of being able to continue on to the next character upon seeing THRE asserted. (GRUB behaves similarly.) As a workaround, introduce a new port type for the ASPEED VUART that's identical to PORT_16550A as it had previously been using, but with UART_FCR_R_TRIG_00 instead to set the receive FIFO trigger level to one byte, which (experimentally) seems to avoid the problematic THRE behavior. Fixes: 54da3e381c2b ("serial: 8250_aspeed_vuart: use UPF_IOREMAP to set up register mapping") Tested-by: Konstantin Aladyshev Reviewed-by: Andy Shevchenko Signed-off-by: Zev Weiss Link: https://lore.kernel.org/r/20220211004203.14915-1-zev@bewilderbeest.net Signed-off-by: Greg Kroah-Hartman

tty: serial: Drop unused efm32 serial driver

2021-01-15T16:14:49+00:00

Support for this machine was just removed, so drop the now unused UART driver, too. Signed-off-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20210115155130.185010-7-u.kleine-koenig@pengutronix.de Signed-off-by: Greg Kroah-Hartman

tty: serial: remove pnx8xxx uart driver

2020-11-06T16:04:36+00:00

Commit 625326ea9c84 ("MIPS: Remove PNX833x alias NXP_STB22x") removed support for PNX833x, so it's time to remove serial driver, too. Signed-off-by: Thomas Bogendoerfer Link: https://lore.kernel.org/r/20201106130332.103476-1-tsbogend@alpha.franken.de Signed-off-by: Greg Kroah-Hartman

serial: Remove duplicated macro definition of port type

2020-07-06T12:06:08+00:00

There exists the same macro definition of port type from 0 to 13 in include/uapi/linux/serial.h, remove these duplicated code in include/uapi/linux/serial_core.h which includes the former header. Acked-by: Jiri Slaby Signed-off-by: Tiezhu Yang Link: https://lore.kernel.org/r/1588853015-28392-1-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Greg Kroah-Hartman

serial: fsl_linflexuart: Be consistent with the name

2019-10-16T13:11:24+00:00

For consistency reasons, spell the controller name as "LINFlexD" in comments and documentation. Signed-off-by: Stefan-Gabriel Mirea Link: https://lore.kernel.org/r/1571230107-8493-4-git-send-email-stefan-gabriel.mirea@nxp.com Signed-off-by: Greg Kroah-Hartman

tty: serial: Fix PORT_LINFLEXUART definition

2019-10-04T13:57:51+00:00

The port type macros should have different values for different devices. Currently, PORT_LINFLEXUART conflicts with PORT_SUNIX. Fixes: 09864c1cdf5c ("tty: serial: Add linflexuart driver for S32V234") Signed-off-by: Stefan-Gabriel Mirea Link: https://lore.kernel.org/r/20191004135058.18007-1-stefan-gabriel.mirea@nxp.com Signed-off-by: Greg Kroah-Hartman

tty: serial: Add linflexuart driver for S32V234

2019-09-04T10:43:54+00:00

Introduce support for LINFlex driver, based on: - the version of Freescale LPUART driver after commit b3e3bf2ef2c7 ("Merge 4.0-rc7 into tty-next"); - commit abf1e0a98083 ("tty: serial: fsl_lpuart: lock port on console write"). In this basic version, the driver can be tested using initramfs and relies on the clocks and pin muxing set up by U-Boot. Remarks concerning the earlycon support: - LinFlexD does not allow character transmissions in the INIT mode (see section 47.4.2.1 in the reference manual[1]). Therefore, a mutual exclusion between the first linflex_setup_watermark/linflex_set_termios executions and linflex_earlycon_putchar was employed and the characters normally sent to earlycon during initialization are kept in a buffer and sent afterwards. - Empirically, character transmission is also forbidden within the last 1-2 ms before entering the INIT mode, so we use an explicit timeout (PREINIT_DELAY) between linflex_earlycon_putchar and the first call to linflex_setup_watermark. - U-Boot currently uses the UART FIFO mode, while this driver makes the transition to the buffer mode. Therefore, the earlycon putchar function matches the U-Boot behavior before initializations and the Linux behavior after. [1] https://www.nxp.com/webapp/Download?colCode=S32V234RM Signed-off-by: Stoica Cosmin-Stefan Signed-off-by: Adrian.Nitu Signed-off-by: Larisa Grigore Signed-off-by: Ana Nedelcu Signed-off-by: Mihaela Martinas Signed-off-by: Matthew Nunez [stefan-gabriel.mirea@nxp.com: Reduced for upstreaming and implemented earlycon support] Signed-off-by: Stefan-Gabriel Mirea Link: https://lore.kernel.org/r/20190809112853.15846-6-stefan-gabriel.mirea@nxp.com Signed-off-by: Greg Kroah-Hartman

serial: 8250_pci: Add support for Sunix serial boards

2019-09-04T10:43:53+00:00

Add support to Sunix serial boards with up to 16 ports. Sunix board need its own setup callback instead of using Timedia's, to properly support more than 4 ports. Cc: Morris Ku Cc: Debbie Liu Signed-off-by: Kai-Heng Feng Link: https://lore.kernel.org/r/20190809190130.30773-1-kai.heng.feng@canonical.com Signed-off-by: Greg Kroah-Hartman