diff options
| author | Daniel Hellstrom <daniel@gaisler.com> | 2012-04-19 15:21:21 +0200 |
|---|---|---|
| committer | Gedare Bloom <gedare@rtems.org> | 2012-04-19 12:34:20 -0400 |
| commit | 07557c86fddef855d911a8d7c879d6ede27ba527 (patch) | |
| tree | ade089e64ebd8dcce9e6c52c379ba154a905b14a | |
| parent | LEON3: console, lower bus utilization waiting for UART TX ready (diff) | |
| download | rtems-07557c86fddef855d911a8d7c879d6ede27ba527.tar.bz2 | |
LEON3: add console attributes such as parity and baudrate
Signed-off-by: Daniel Hellstrom <daniel@gaisler.com>
| -rw-r--r-- | c/src/lib/libbsp/sparc/leon3/console/console.c | 71 |
1 files changed, 68 insertions, 3 deletions
diff --git a/c/src/lib/libbsp/sparc/leon3/console/console.c b/c/src/lib/libbsp/sparc/leon3/console/console.c index fa67d370ea..45ec82eff5 100644 --- a/c/src/lib/libbsp/sparc/leon3/console/console.c +++ b/c/src/lib/libbsp/sparc/leon3/console/console.c @@ -13,8 +13,6 @@ * The license and distribution terms for this file may be * found in the file LICENSE in this distribution or at * http://www.rtems.com/license/LICENSE. - * - * $Id$ */ #include <bsp.h> @@ -102,6 +100,73 @@ int console_pollRead(int minor) return apbuart_inbyte_nonblocking(apbuarts[port].regs); } +int console_set_attributes(int minor, const struct termios *t) +{ + unsigned int scaler; + unsigned int ctrl; + int baud; + struct apbuart_priv *uart; + + switch (t->c_cflag & CSIZE) { + default: + case CS5: + case CS6: + case CS7: + /* Hardware doesn't support other than CS8 */ + return -1; + case CS8: + break; + } + + if (minor == 0) + uart = &apbuarts[syscon_uart_index]; + else + uart = &apbuarts[minor - 1]; + + /* Read out current value */ + ctrl = uart->regs->ctrl; + + switch (t->c_cflag & (PARENB|PARODD)) { + case (PARENB|PARODD): + /* Odd parity */ + ctrl |= LEON_REG_UART_CTRL_PE|LEON_REG_UART_CTRL_PS; + break; + + case PARENB: + /* Even parity */ + ctrl &= ~LEON_REG_UART_CTRL_PS; + ctrl |= LEON_REG_UART_CTRL_PE; + break; + + default: + case 0: + case PARODD: + /* No Parity */ + ctrl &= ~(LEON_REG_UART_CTRL_PS|LEON_REG_UART_CTRL_PE); + } + + if (!(t->c_cflag & CLOCAL)) { + ctrl |= LEON_REG_UART_CTRL_FL; + } else { + ctrl &= ~LEON_REG_UART_CTRL_FL; + } + + /* Update new settings */ + uart->regs->ctrl = ctrl; + + /* Baud rate */ + baud = rtems_termios_baud_to_number(t->c_cflag); + if (baud > 0) { + /* Calculate Baud rate generator "scaler" number */ + scaler = (((uart->freq_hz * 10) / (baud * 8)) - 5) / 10; + + /* Set new baud rate by setting scaler */ + uart->regs->scaler = scaler; + } + + return 0; +} + /* AMBA PP find routine. Extract AMBA PnP information into data structure. */ int find_matching_apbuart(struct ambapp_dev *dev, int index, void *arg) { @@ -208,7 +273,7 @@ rtems_device_driver console_open( NULL, /* lastClose */ console_pollRead, /* pollRead */ console_write_support, /* write */ - NULL, /* setAttributes */ + console_set_attributes, /* setAttributes */ NULL, /* stopRemoteTx */ NULL, /* startRemoteTx */ 0 /* outputUsesInterrupts */ |