diff options
Diffstat (limited to 'drivers/tty/serial/atmel_serial.c')
-rw-r--r-- | drivers/tty/serial/atmel_serial.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c index c0e7246..d9439e6 100644 --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -159,6 +159,7 @@ struct atmel_uart_port { u32 rts_high; u32 rts_low; bool ms_irq_enabled; + u32 rtor; /* address of receiver timeout register if it exists */ bool has_hw_timer; struct timer_list uart_timer; @@ -1718,12 +1719,16 @@ static void atmel_get_ip_name(struct uart_port *port) atmel_port->has_hw_timer = false; - if (name == usart || name == new_uart) { - dev_dbg(port->dev, "Usart or uart with hw timer\n"); + if (name == new_uart) { + dev_dbg(port->dev, "Uart with hw timer"); atmel_port->has_hw_timer = true; + atmel_port->rtor = ATMEL_UA_RTOR; + } else if (name == usart) { + dev_dbg(port->dev, "Usart\n"); + atmel_port->has_hw_timer = true; + atmel_port->rtor = ATMEL_US_RTOR; } else if (name == dbgu_uart) { dev_dbg(port->dev, "Dbgu or uart without hw timer\n"); - atmel_port->has_hw_timer = false; } else { /* fallback for older SoCs: use version field */ version = atmel_uart_readl(port, ATMEL_US_VERSION); @@ -1732,11 +1737,11 @@ static void atmel_get_ip_name(struct uart_port *port) case 0x10213: dev_dbg(port->dev, "This version is usart\n"); atmel_port->has_hw_timer = true; + atmel_port->rtor = ATMEL_US_RTOR; break; case 0x203: case 0x10202: dev_dbg(port->dev, "This version is uart\n"); - atmel_port->has_hw_timer = false; break; default: dev_err(port->dev, "Not supported ip name nor version, set to uart\n"); @@ -1841,7 +1846,8 @@ static int atmel_startup(struct uart_port *port) jiffies + uart_poll_timeout(port)); /* set USART timeout */ } else { - atmel_uart_writel(port, ATMEL_US_RTOR, PDC_RX_TIMEOUT); + atmel_uart_writel(port, atmel_port->rtor, + PDC_RX_TIMEOUT); atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); atmel_uart_writel(port, ATMEL_US_IER, @@ -1856,7 +1862,8 @@ static int atmel_startup(struct uart_port *port) jiffies + uart_poll_timeout(port)); /* set USART timeout */ } else { - atmel_uart_writel(port, ATMEL_US_RTOR, PDC_RX_TIMEOUT); + atmel_uart_writel(port, atmel_port->rtor, + PDC_RX_TIMEOUT); atmel_uart_writel(port, ATMEL_US_CR, ATMEL_US_STTTO); atmel_uart_writel(port, ATMEL_US_IER, |