diff options
Diffstat (limited to 'drivers/tty/serial/bfin_sport_uart.c')
| -rw-r--r-- | drivers/tty/serial/bfin_sport_uart.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/drivers/tty/serial/bfin_sport_uart.c b/drivers/tty/serial/bfin_sport_uart.c index ee101c0d358f..7fbc3a08f10d 100644 --- a/drivers/tty/serial/bfin_sport_uart.c +++ b/drivers/tty/serial/bfin_sport_uart.c @@ -299,8 +299,13 @@ static int sport_startup(struct uart_port *port) dev_info(port->dev, "Unable to attach BlackFin UART over SPORT CTS interrupt. So, disable it.\n"); } } - if (up->rts_pin >= 0) - gpio_direction_output(up->rts_pin, 0); + if (up->rts_pin >= 0) { + if (gpio_request(up->rts_pin, DRV_NAME)) { + dev_info(port->dev, "fail to request RTS PIN at GPIO_%d\n", up->rts_pin); + up->rts_pin = -1; + } else + gpio_direction_output(up->rts_pin, 0); + } #endif return 0; @@ -445,6 +450,8 @@ static void sport_shutdown(struct uart_port *port) #ifdef CONFIG_SERIAL_BFIN_SPORT_CTSRTS if (up->cts_pin >= 0) free_irq(gpio_to_irq(up->cts_pin), up); + if (up->rts_pin >= 0) + gpio_free(up->rts_pin); #endif } @@ -803,17 +810,16 @@ static int __devinit sport_uart_probe(struct platform_device *pdev) res = platform_get_resource(pdev, IORESOURCE_IO, 0); if (res == NULL) sport->cts_pin = -1; - else + else { sport->cts_pin = res->start; + sport->port.flags |= ASYNC_CTS_FLOW; + } res = platform_get_resource(pdev, IORESOURCE_IO, 1); if (res == NULL) sport->rts_pin = -1; else sport->rts_pin = res->start; - - if (sport->rts_pin >= 0) - gpio_request(sport->rts_pin, DRV_NAME); #endif } @@ -853,10 +859,6 @@ static int __devexit sport_uart_remove(struct platform_device *pdev) if (sport) { uart_remove_one_port(&sport_uart_reg, &sport->port); -#ifdef CONFIG_SERIAL_BFIN_CTSRTS - if (sport->rts_pin >= 0) - gpio_free(sport->rts_pin); -#endif iounmap(sport->port.membase); peripheral_free_list( (unsigned short *)pdev->dev.platform_data); |