diff options
| author | Felipe Balbi <balbi@ti.com> | 2012-09-06 15:45:40 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-06 09:17:02 -0700 |
| commit | 6721ab7f77f2614ab43e3de2f908b1d7436331df (patch) | |
| tree | d77f97af3e60931b62d6ec775f5fbb6b2bab7b23 | |
| parent | d37c6cebcb0c7ab4fc9e000061c93cca9d2a3941 (diff) | |
| download | op-kernel-dev-6721ab7f77f2614ab43e3de2f908b1d7436331df.zip op-kernel-dev-6721ab7f77f2614ab43e3de2f908b1d7436331df.tar.gz | |
serial: omap: enable RX and TX FIFO usage
enable RX FIFO for 16 characters and TX FIFO
for 16 spaces.
Tested-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/tty/serial/omap-serial.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/tty/serial/omap-serial.c b/drivers/tty/serial/omap-serial.c index 164c3c9..cfd2094 100644 --- a/drivers/tty/serial/omap-serial.c +++ b/drivers/tty/serial/omap-serial.c @@ -56,8 +56,8 @@ #define OMAP_UART_SCR_RX_TRIG_GRANU1_MASK (1 << 7) /* FCR register bitmasks */ -#define OMAP_UART_FCR_RX_FIFO_TRIG_SHIFT 6 #define OMAP_UART_FCR_RX_FIFO_TRIG_MASK (0x3 << 6) +#define OMAP_UART_FCR_TX_FIFO_TRIG_MASK (0x3 << 4) /* MVR register bitmasks */ #define OMAP_UART_MVR_SCHEME_SHIFT 30 @@ -834,9 +834,13 @@ serial_omap_set_termios(struct uart_port *port, struct ktermios *termios, up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK; - /* Set receive FIFO threshold to 1 byte */ + /* Set receive FIFO threshold to 16 characters and + * transmit FIFO threshold to 16 spaces + */ up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK; - up->fcr |= (0x1 << OMAP_UART_FCR_RX_FIFO_TRIG_SHIFT); + up->fcr &= ~OMAP_UART_FCR_TX_FIFO_TRIG_MASK; + up->fcr |= UART_FCR6_R_TRIGGER_16 | UART_FCR6_T_TRIGGER_24 | + UART_FCR_ENABLE_FIFO; serial_out(up, UART_FCR, up->fcr); serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B); |
