diff options
Diffstat (limited to 'sys/arm/at91/uart_bus_at91usart.c')
-rw-r--r-- | sys/arm/at91/uart_bus_at91usart.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/sys/arm/at91/uart_bus_at91usart.c b/sys/arm/at91/uart_bus_at91usart.c new file mode 100644 index 0000000..c2dcc29 --- /dev/null +++ b/sys/arm/at91/uart_bus_at91usart.c @@ -0,0 +1,111 @@ +/*- + * Copyright (c) 2005 Olivier Houchard. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include "opt_uart.h" + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/systm.h> +#include <sys/bus.h> +#include <sys/conf.h> +#include <sys/kernel.h> +#include <sys/module.h> +#include <machine/bus.h> +#include <sys/rman.h> +#include <machine/resource.h> + +#include <dev/pci/pcivar.h> + +#include <dev/uart/uart.h> +#include <dev/uart/uart_bus.h> +#include <dev/uart/uart_cpu.h> + +#include <arm/at91/at91rm92reg.h> + +#include "uart_if.h" + +static int usart_at91rm92_probe(device_t dev); + +extern struct uart_class at91_usart_class; + +static device_method_t usart_at91rm92_methods[] = { + /* Device interface */ + DEVMETHOD(device_probe, usart_at91rm92_probe), + DEVMETHOD(device_attach, uart_bus_attach), + DEVMETHOD(device_detach, uart_bus_detach), + { 0, 0 } +}; + +static driver_t usart_at91rm92_driver = { + uart_driver_name, + usart_at91rm92_methods, + sizeof(struct uart_softc), +}; + +extern SLIST_HEAD(uart_devinfo_list, uart_devinfo) uart_sysdevs; + +static int +usart_at91rm92_probe(device_t dev) +{ + struct uart_softc *sc; + + sc = device_get_softc(dev); + switch (device_get_unit(dev)) + { + case 0: + device_set_desc(dev, "DBGU"); +#ifndef USART0_CONSOLE + /* + * Setting sc_sysdev makes this device a 'system device' and + * indirectly makes it the system console. + */ + sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs); + bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas)); +#endif + break; + case 1: + device_set_desc(dev, "USART0"); +#ifdef USART0_CONSOLE + sc->sc_sysdev = SLIST_FIRST(&uart_sysdevs); + bcopy(&sc->sc_sysdev->bas, &sc->sc_bas, sizeof(sc->sc_bas)); +#endif + break; + case 2: + device_set_desc(dev, "USART1"); + break; + case 3: + device_set_desc(dev, "USART2"); + break; + case 4: + device_set_desc(dev, "USART3"); + break; + } + sc->sc_class = &at91_usart_class; + return (uart_bus_probe(dev, 0, 0, 0, device_get_unit(dev), 0)); +} + + +DRIVER_MODULE(uart, atmelarm, usart_at91rm92_driver, uart_devclass, 0, 0); |