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| author | John Crispin <blogic@openwrt.org> | 2013-01-25 19:39:51 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-30 00:15:34 -0500 |
| commit | c420811f117a59a4a7d4e34b362437b91c7fafa1 (patch) | |
| tree | d7085982248f5347c65da5977a3dfd79eefb3ef6 | |
| parent | 9fe8074b82ed14358be50c62ab9d081bcb911607 (diff) | |
| download | linux-c420811f117a59a4a7d4e34b362437b91c7fafa1.tar.gz linux-c420811f117a59a4a7d4e34b362437b91c7fafa1.tar.bz2 linux-c420811f117a59a4a7d4e34b362437b91c7fafa1.zip | |
serial: ralink: adds support for the serial core found on ralink wisoc
The MIPS based Ralink WiSoC platform has 1 or more 8250 compatible serial cores.
To make them work we require the same quirks that are used by AU1x00.
Signed-off-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/8250/8250.c | 6 | ||||
| -rw-r--r-- | drivers/tty/serial/8250/Kconfig | 8 | ||||
| -rw-r--r-- | include/linux/serial_core.h | 2 |
3 files changed, 12 insertions, 4 deletions
diff --git a/drivers/tty/serial/8250/8250.c b/drivers/tty/serial/8250/8250.c index 24939ca3eedc..0efc815a4968 100644 --- a/drivers/tty/serial/8250/8250.c +++ b/drivers/tty/serial/8250/8250.c @@ -317,9 +317,9 @@ static void default_serial_dl_write(struct uart_8250_port *up, int value) serial_out(up, UART_DLM, value >> 8 & 0xff); } -#ifdef CONFIG_MIPS_ALCHEMY +#if defined(CONFIG_MIPS_ALCHEMY) || defined(CONFIG_SERIAL_8250_RT288X) -/* Au1x00 UART hardware has a weird register layout */ +/* Au1x00/RT288x UART hardware has a weird register layout */ static const u8 au_io_in_map[] = { [UART_RX] = 0, [UART_IER] = 2, @@ -440,7 +440,7 @@ static void set_io_from_upio(struct uart_port *p) p->serial_out = mem32_serial_out; break; -#ifdef CONFIG_MIPS_ALCHEMY +#if defined(CONFIG_MIPS_ALCHEMY) || defined(CONFIG_SERIAL_8250_RT288X) case UPIO_AU: p->serial_in = au_serial_in; p->serial_out = au_serial_out; diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig index d31f4c63d4ba..2ef9537bcb2c 100644 --- a/drivers/tty/serial/8250/Kconfig +++ b/drivers/tty/serial/8250/Kconfig @@ -276,3 +276,11 @@ config SERIAL_8250_EM Selecting this option will add support for the integrated serial port hardware found on the Emma Mobile line of processors. If unsure, say N. + +config SERIAL_8250_RT288X + bool "Ralink RT288x/RT305x/RT3662/RT3883 serial port support" + depends on SERIAL_8250 && (SOC_RT288X || SOC_RT305X || SOC_RT3883) + help + If you have a Ralink RT288x/RT305x SoC based board and want to use the + serial port, say Y to this option. The driver can handle up to 2 serial + ports. If unsure, say N. diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 82aebc8ff77f..d97142159e0f 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -134,7 +134,7 @@ struct uart_port { #define UPIO_HUB6 (1) #define UPIO_MEM (2) #define UPIO_MEM32 (3) -#define UPIO_AU (4) /* Au1x00 type IO */ +#define UPIO_AU (4) /* Au1x00 and RT288x type IO */ #define UPIO_TSI (5) /* Tsi108/109 type IO */ unsigned int read_status_mask; /* driver specific */ |