diff options
Diffstat (limited to 'drivers/tty/serial/8250/8250.h')
| -rw-r--r-- | drivers/tty/serial/8250/8250.h | 51 |
1 files changed, 43 insertions, 8 deletions
diff --git a/drivers/tty/serial/8250/8250.h b/drivers/tty/serial/8250/8250.h index 215a99237e95..122e0e4029fe 100644 --- a/drivers/tty/serial/8250/8250.h +++ b/drivers/tty/serial/8250/8250.h @@ -15,6 +15,8 @@ #include <linux/serial_reg.h> #include <linux/dmaengine.h> +#include "../serial_mctrl_gpio.h" + struct uart_8250_dma { int (*tx_dma)(struct uart_8250_port *p); int (*rx_dma)(struct uart_8250_port *p); @@ -53,11 +55,9 @@ struct old_serial_port { unsigned int port; unsigned int irq; upf_t flags; - unsigned char hub6; unsigned char io_type; unsigned char __iomem *iomem_base; unsigned short iomem_reg_shift; - unsigned long irqflags; }; struct serial8250_config { @@ -131,6 +131,47 @@ void serial8250_rpm_put(struct uart_8250_port *p); int serial8250_em485_init(struct uart_8250_port *p); void serial8250_em485_destroy(struct uart_8250_port *p); +static inline void serial8250_out_MCR(struct uart_8250_port *up, int value) +{ + int mctrl_gpio = 0; + + serial_out(up, UART_MCR, value); + + if (value & UART_MCR_RTS) + mctrl_gpio |= TIOCM_RTS; + if (value & UART_MCR_DTR) + mctrl_gpio |= TIOCM_DTR; + + mctrl_gpio_set(up->gpios, mctrl_gpio); +} + +static inline int serial8250_in_MCR(struct uart_8250_port *up) +{ + int mctrl, mctrl_gpio = 0; + + mctrl = serial_in(up, UART_MCR); + + /* save current MCR values */ + if (mctrl & UART_MCR_RTS) + mctrl_gpio |= TIOCM_RTS; + if (mctrl & UART_MCR_DTR) + mctrl_gpio |= TIOCM_DTR; + + mctrl_gpio = mctrl_gpio_get_outputs(up->gpios, &mctrl_gpio); + + if (mctrl_gpio & TIOCM_RTS) + mctrl |= UART_MCR_RTS; + else + mctrl &= ~UART_MCR_RTS; + + if (mctrl_gpio & TIOCM_DTR) + mctrl |= UART_MCR_DTR; + else + mctrl &= ~UART_MCR_DTR; + + return mctrl; +} + #if defined(__alpha__) && !defined(CONFIG_PCI) /* * Digital did something really horribly wrong with the OUT1 and OUT2 @@ -237,9 +278,3 @@ static inline int serial_index(struct uart_port *port) { return port->minor - 64; } - -#if 0 -#define DEBUG_INTR(fmt...) printk(fmt) -#else -#define DEBUG_INTR(fmt...) do { } while (0) -#endif |