diff options
| author | Sonic Zhang <sonic.zhang@analog.com> | 2012-05-16 14:22:25 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-17 13:25:56 -0700 |
| commit | 3c2d0ed221a22ce2c1c9fe1e2d6142374917642e (patch) | |
| tree | 2cd3baf5f365b8cf0b6f5be019594f77b409d3c0 /drivers/tty | |
| parent | 239c25b1a03cf57193b9a52623deb918adf6132e (diff) | |
| download | lwn-3c2d0ed221a22ce2c1c9fe1e2d6142374917642e.tar.gz lwn-3c2d0ed221a22ce2c1c9fe1e2d6142374917642e.zip | |
serial: bfin_uart: RTS and CTS MMRs can be either 16-bit width or 32-bit width.
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>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/bfin_uart.c | 22 |
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/tty/serial/bfin_uart.c b/drivers/tty/serial/bfin_uart.c index 56b95b0447d9..7924ba6d5dfb 100644 --- a/drivers/tty/serial/bfin_uart.c +++ b/drivers/tty/serial/bfin_uart.c @@ -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)) { |