leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

serial: omap: enable RX and TX FIFO usage

Browse Source 
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>
This commit is contained in:
Felipe Balbi 2012-09-06 15:45:40 +03:00 committed by Greg Kroah-Hartman
parent d37c6cebcb
commit 6721ab7f77
1 changed files with 7 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/tty/serial/omap-serial.c
View File

@ -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);