diff options
| author |   Darren Hart <dvhart@linux.intel.com> | 2012-03-09 09:51:48 -0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-09 12:43:19 -0800 |
| commit | a8a3ec9df2158d217494c9dd8db8a099ef4fb921 (patch) | |
| tree | 902ea3aabd31c27640458c2026e10409153007a2 /drivers/tty/serial/pch_uart.c | |
| parent | mpc5200b/uart: select more tolerant uart prescaler on low baudrates (diff) | |
| download | linux-dev-a8a3ec9df2158d217494c9dd8db8a099ef4fb921.tar.xz linux-dev-a8a3ec9df2158d217494c9dd8db8a099ef4fb921.zip | |
pch_uart: Use uartclk instead of base_baud
The term "base baud" refers to the fastest baud rate the device can communicate
at. This is clock/16. pch_uart is using base_baud as the clock itself. Rename
the variables to be semantically correct.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Tomoya MORINAGA <tomoya.rohm@gmail.com>
CC: Feng Tang <feng.tang@intel.com>
CC: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/pch_uart.c')
| -rw-r--r-- | drivers/tty/serial/pch_uart.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index aa4d07b4a9d5..5178213835c6 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -206,7 +206,7 @@ enum { #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE) -#define DEFAULT_BAUD_RATE 1843200 /* 1.8432MHz */ +#define DEFAULT_UARTCLK 1843200 /* 1.8432MHz */ struct pch_uart_buffer { unsigned char *buf; @@ -221,7 +221,7 @@ struct eg20t_port { unsigned int iobase; struct pci_dev *pdev; int fifo_size; - int base_baud; + int uartclk; int start_tx; int start_rx; int tx_empty; @@ -387,7 +387,7 @@ static int pch_uart_hal_set_line(struct eg20t_port *priv, int baud, unsigned int dll, dlm, lcr; int div; - div = DIV_ROUND_CLOSEST(priv->base_baud / 16, baud); + div = DIV_ROUND_CLOSEST(priv->uartclk / 16, baud); if (div < 0 || USHRT_MAX <= div) { dev_err(priv->port.dev, "Invalid Baud(div=0x%x)\n", div); return -EINVAL; @@ -1205,9 +1205,9 @@ static int pch_uart_startup(struct uart_port *port) priv->tx_empty = 1; if (port->uartclk) - priv->base_baud = port->uartclk; + priv->uartclk = port->uartclk; else - port->uartclk = priv->base_baud; + port->uartclk = priv->uartclk; pch_uart_hal_disable_interrupt(priv, PCH_UART_HAL_ALL_INT); ret = pch_uart_hal_set_line(priv, default_baud, @@ -1557,7 +1557,7 @@ static int __init pch_console_setup(struct console *co, char *options) return -ENODEV; /* setup uartclock */ - port->uartclk = DEFAULT_BAUD_RATE; + port->uartclk = DEFAULT_UARTCLK; if (options) uart_parse_options(options, &baud, &parity, &bits, &flow); @@ -1600,7 +1600,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, unsigned int iobase; unsigned int mapbase; unsigned char *rxbuf; - int fifosize, base_baud; + int fifosize, uartclk; int port_type; struct pch_uart_driver_data *board; const char *board_name; @@ -1617,12 +1617,12 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, if (!rxbuf) goto init_port_free_txbuf; - base_baud = DEFAULT_BAUD_RATE; + uartclk = DEFAULT_UARTCLK; /* quirk for CM-iTC board */ board_name = dmi_get_system_info(DMI_BOARD_NAME); if (board_name && strstr(board_name, "CM-iTC")) - base_baud = 192000000; /* 192.0MHz */ + uartclk = 192000000; /* 192.0MHz */ switch (port_type) { case PORT_UNKNOWN: @@ -1648,7 +1648,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, priv->rxbuf.size = PAGE_SIZE; priv->fifo_size = fifosize; - priv->base_baud = base_baud; + priv->uartclk = uartclk; priv->port_type = PORT_MAX_8250 + port_type + 1; priv->port.dev = &pdev->dev; priv->port.iobase = iobase; |