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serial: bfin_uart: RTS and CTS MMRs can be either 16-bit width or 32-bit width.

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Change hardware flow control code to adapt to both bf5xx and bf60x.
Disabled serial device before set termios for bf60x.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bob Liu <lliubbo@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sonic Zhang
2012-05-16 14:22:25 +08:00
committed by Greg Kroah-Hartman
parent 239c25b1a0
commit 3c2d0ed221
1 changed files with 10 additions and 12 deletions
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22
drivers/tty/serial/bfin_uart.c
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@ -549,7 +549,7 @@ static irqreturn_t bfin_serial_dma_tx_int(int irq, void *dev_id)
static irqreturn_t bfin_serial_dma_rx_int(int irq, void *dev_id)
{
struct bfin_serial_port *uart = dev_id;
unsigned short irqstat;
unsigned int irqstat;
int x_pos, pos;
spin_lock(&uart->rx_lock);
@ -582,7 +582,7 @@ static irqreturn_t bfin_serial_dma_rx_int(int irq, void *dev_id)
static unsigned int bfin_serial_tx_empty(struct uart_port *port)
{
struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
unsigned short lsr;
unsigned int lsr;
lsr = UART_GET_LSR(uart);
if (lsr & TEMT)
@ -741,7 +741,7 @@ static int bfin_serial_startup(struct uart_port *port)
}
/* CTS RTS PINs are negative assertive. */
UART_PUT_MCR(uart, ACTS);
UART_PUT_MCR(uart, UART_GET_MCR(uart) | ACTS);
UART_SET_IER(uart, EDSSI);
}
#endif
@ -799,7 +799,7 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
unsigned long flags;
unsigned int baud, quot;
unsigned short val, ier, lcr = 0;
unsigned int ier, lcr = 0;
switch (termios->c_cflag & CSIZE) {
case CS8:
@ -871,6 +871,7 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
/* Disable UART */
ier = UART_GET_IER(uart);
UART_PUT_GCTL(uart, UART_GET_GCTL(uart) & ~UCEN);
UART_DISABLE_INTS(uart);
/* Set DLAB in LCR to Access CLK */
@ -882,14 +883,11 @@ bfin_serial_set_termios(struct uart_port *port, struct ktermios *termios,
/* Clear DLAB in LCR to Access THR RBR IER */
UART_CLEAR_DLAB(uart);
UART_PUT_LCR(uart, lcr);
UART_PUT_LCR(uart, (UART_GET_LCR(uart) & ~LCR_MASK) | lcr);
/* Enable UART */
UART_ENABLE_INTS(uart, ier);
val = UART_GET_GCTL(uart);
val |= UCEN;
UART_PUT_GCTL(uart, val);
UART_PUT_GCTL(uart, UART_GET_GCTL(uart) | UCEN);
/* Port speed changed, update the per-port timeout. */
uart_update_timeout(port, termios->c_cflag, baud);
@ -949,7 +947,7 @@ bfin_serial_verify_port(struct uart_port *port, struct serial_struct *ser)
static void bfin_serial_set_ldisc(struct uart_port *port, int ld)
{
struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
unsigned short val;
unsigned int val;
switch (ld) {
case N_IRDA:
@ -967,7 +965,7 @@ static void bfin_serial_set_ldisc(struct uart_port *port, int ld)
static void bfin_serial_reset_irda(struct uart_port *port)
{
struct bfin_serial_port *uart = (struct bfin_serial_port *)port;
unsigned short val;
unsigned int val;
val = UART_GET_GCTL(uart);
val &= ~(UMOD_MASK | RPOLC);
@ -1065,7 +1063,7 @@ static void __init
bfin_serial_console_get_options(struct bfin_serial_port *uart, int *baud,
int *parity, int *bits)
{
unsigned short status;
unsigned int status;
status = UART_GET_IER(uart) & (ERBFI | ETBEI);
if (status == (ERBFI | ETBEI)) {