With this change both earlyprintk and earlycon coexist We switch over to latter in next patch
Signed-off-by: Vineet Gupta <[email protected]> --- drivers/tty/serial/Kconfig | 1 + drivers/tty/serial/arc_uart.c | 30 ++++++++++++++++++++++++++++++ 2 files changed, 31 insertions(+) diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index fb57159bad3a..2311443be7dc 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1473,6 +1473,7 @@ config SERIAL_ARC_CONSOLE bool "Console on ARC UART" depends on SERIAL_ARC=y select SERIAL_CORE_CONSOLE + select SERIAL_EARLYCON help Enable system Console on ARC UART diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c index a6da10f84293..0c8ba5bb97c7 100644 --- a/drivers/tty/serial/arc_uart.c +++ b/drivers/tty/serial/arc_uart.c @@ -646,6 +646,36 @@ static int __init arc_serial_probe_earlyprintk(struct platform_device *pdev) register_console(&arc_early_serial_console); return 0; } + +static __init void arc_early_serial_write(struct console *con, const char *s, + unsigned int n) +{ + struct earlycon_device *dev = con->data; + + uart_console_write(&dev->port, s, n, arc_serial_poll_putchar); +} + +static int __init arc_early_console_setup(struct earlycon_device *dev, + const char *opt) +{ + struct uart_port *port = &dev->port; + unsigned int l, h, hw_val; + + if (!dev->port.membase) + return -ENODEV; + + hw_val = port->uartclk / (dev->baud * 4) - 1; + l = hw_val & 0xFF; + h = (hw_val >> 8) & 0xFF; + + UART_SET_BAUDL(port, l); + UART_SET_BAUDH(port, h); + + dev->con->write = arc_early_serial_write; + return 0; +} +EARLYCON_DECLARE(arc_uart, arc_early_console_setup); + #endif /* CONFIG_SERIAL_ARC_CONSOLE */ static int arc_serial_probe(struct platform_device *pdev) -- 1.8.3.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
