diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/sirfsoc_uart.c | 52 |
1 files changed, 23 insertions, 29 deletions
diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c index 10718c0d543..d37609dfcf7 100644 --- a/drivers/tty/serial/sirfsoc_uart.c +++ b/drivers/tty/serial/sirfsoc_uart.c @@ -649,37 +649,10 @@ static void sirfsoc_uart_set_termios(struct uart_port *port, spin_unlock_irqrestore(&port->lock, flags); } -static void startup_uart_controller(struct uart_port *port) -{ - struct sirfsoc_uart_port *sirfport = to_sirfport(port); - struct sirfsoc_register *ureg = &sirfport->uart_reg->uart_reg; - unsigned long temp_regv; - int temp; - temp_regv = rd_regl(port, ureg->sirfsoc_tx_dma_io_ctrl); - wr_regl(port, ureg->sirfsoc_tx_dma_io_ctrl, temp_regv | - SIRFUART_IO_MODE); - temp_regv = rd_regl(port, ureg->sirfsoc_rx_dma_io_ctrl); - wr_regl(port, ureg->sirfsoc_rx_dma_io_ctrl, temp_regv | - SIRFUART_IO_MODE); - wr_regl(port, ureg->sirfsoc_tx_dma_io_len, 0); - wr_regl(port, ureg->sirfsoc_rx_dma_io_len, 0); - wr_regl(port, ureg->sirfsoc_tx_rx_en, SIRFUART_RX_EN | SIRFUART_TX_EN); - if (sirfport->uart_reg->uart_type == SIRF_USP_UART) - wr_regl(port, ureg->sirfsoc_mode1, - SIRFSOC_USP_ENDIAN_CTRL_LSBF | - SIRFSOC_USP_EN); - wr_regl(port, ureg->sirfsoc_tx_fifo_op, SIRFUART_FIFO_RESET); - wr_regl(port, ureg->sirfsoc_tx_fifo_op, 0); - wr_regl(port, ureg->sirfsoc_rx_fifo_op, SIRFUART_FIFO_RESET); - wr_regl(port, ureg->sirfsoc_rx_fifo_op, 0); - temp = SIRFUART_FIFO_THD(port); - wr_regl(port, ureg->sirfsoc_tx_fifo_ctrl, temp); - wr_regl(port, ureg->sirfsoc_rx_fifo_ctrl, temp); -} - static int sirfsoc_uart_startup(struct uart_port *port) { struct sirfsoc_uart_port *sirfport = to_sirfport(port); + struct sirfsoc_register *ureg = &sirfport->uart_reg->uart_reg; unsigned int index = port->line; int ret; set_irq_flags(port->irq, IRQF_VALID | IRQF_NOAUTOEN); @@ -693,7 +666,27 @@ static int sirfsoc_uart_startup(struct uart_port *port) index, port->irq); goto irq_err; } - startup_uart_controller(port); + + /* initial hardware settings */ + wr_regl(port, ureg->sirfsoc_tx_dma_io_ctrl, + rd_regl(port, ureg->sirfsoc_tx_dma_io_ctrl) | + SIRFUART_IO_MODE); + wr_regl(port, ureg->sirfsoc_rx_dma_io_ctrl, + rd_regl(port, ureg->sirfsoc_rx_dma_io_ctrl) | + SIRFUART_IO_MODE); + wr_regl(port, ureg->sirfsoc_tx_dma_io_len, 0); + wr_regl(port, ureg->sirfsoc_rx_dma_io_len, 0); + wr_regl(port, ureg->sirfsoc_tx_rx_en, SIRFUART_RX_EN | SIRFUART_TX_EN); + if (sirfport->uart_reg->uart_type == SIRF_USP_UART) + wr_regl(port, ureg->sirfsoc_mode1, + SIRFSOC_USP_ENDIAN_CTRL_LSBF | + SIRFSOC_USP_EN); + wr_regl(port, ureg->sirfsoc_tx_fifo_op, SIRFUART_FIFO_RESET); + wr_regl(port, ureg->sirfsoc_tx_fifo_op, 0); + wr_regl(port, ureg->sirfsoc_rx_fifo_op, SIRFUART_FIFO_RESET); + wr_regl(port, ureg->sirfsoc_rx_fifo_op, 0); + wr_regl(port, ureg->sirfsoc_tx_fifo_ctrl, SIRFUART_FIFO_THD(port)); + wr_regl(port, ureg->sirfsoc_rx_fifo_ctrl, SIRFUART_FIFO_THD(port)); sirfport->ms_enabled = false; if (sirfport->uart_reg->uart_type == SIRF_USP_UART && @@ -711,6 +704,7 @@ static int sirfsoc_uart_startup(struct uart_port *port) enable_irq(port->irq); + return 0; init_rx_err: free_irq(port->irq, sirfport); irq_err: |