1 files changed, 113 insertions, 0 deletions
diff --git a/sys/mips/mediatek/uart_dev_mtk_ns8250.c b/sys/mips/mediatek/uart_dev_mtk_ns8250.c
new file mode 100644
index 0000000..3c259ff
--- /dev/null
+++ b/sys/mips/mediatek/uart_dev_mtk_ns8250.c
@@ -0,0 +1,113 @@
+/*-
+ * Copyright (c) 2013 Ian Lepore
+ * 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_platform.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/sysctl.h>
+#include <machine/bus.h>
+
+#include <mips/mediatek/mtk_soc.h>
+#include <mips/mediatek/mtk_sysctl.h>
+
+#include <dev/fdt/fdt_common.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <dev/uart/uart.h>
+#include <dev/uart/uart_cpu.h>
+#include <dev/uart/uart_cpu_fdt.h>
+#include <dev/uart/uart_bus.h>
+#include <dev/uart/uart_dev_ns8250.h>
+
+#include "uart_if.h"
+
+/*
+ * High-level UART interface.
+ */
+static struct uart_class uart_mtk_ns8250_class;
+static int mtk_ns8250_bus_probe(struct uart_softc *);
+
+static kobj_method_t mtk_ns8250_methods[] = {
+	KOBJMETHOD(uart_probe,		mtk_ns8250_bus_probe),
+
+	KOBJMETHOD(uart_attach,		ns8250_bus_attach),
+	KOBJMETHOD(uart_detach,		ns8250_bus_detach),
+	KOBJMETHOD(uart_flush,		ns8250_bus_flush),
+	KOBJMETHOD(uart_getsig,		ns8250_bus_getsig),
+	KOBJMETHOD(uart_ioctl,		ns8250_bus_ioctl),
+	KOBJMETHOD(uart_ipend,		ns8250_bus_ipend),
+	KOBJMETHOD(uart_param,		ns8250_bus_param),
+	KOBJMETHOD(uart_receive,	ns8250_bus_receive),
+	KOBJMETHOD(uart_setsig,		ns8250_bus_setsig),
+	KOBJMETHOD(uart_transmit,	ns8250_bus_transmit),
+	KOBJMETHOD_END
+};
+
+static struct uart_class uart_mtk_ns8250_class = {
+	"mtk8250",
+	mtk_ns8250_methods,
+	sizeof(struct ns8250_softc),
+	.uc_ops = &uart_ns8250_ops,
+	.uc_range = 1, /* use hinted range */
+	.uc_rclk = 0,
+	.uc_rshift = 2
+};
+
+static struct ofw_compat_data compat_data[] = {
+	{ "mtk,ns16550a",	(uintptr_t)&uart_mtk_ns8250_class },
+	{ "ns16550a",		(uintptr_t)&uart_mtk_ns8250_class },
+	{ NULL,			(uintptr_t)NULL },
+};
+UART_FDT_CLASS_AND_DEVICE(compat_data);
+
+static int
+mtk_ns8250_bus_probe(struct uart_softc *sc)
+{       
+	int status;
+       
+	if (!ofw_bus_status_okay(sc->sc_dev))
+		return (ENXIO);
+        
+	if (ofw_bus_search_compatible(sc->sc_dev, compat_data)->ocd_data ==
+	    (uintptr_t)NULL)
+		return (ENXIO);
+        
+	sc->sc_bas.rclk = mtk_soc_get_uartclk();
+        
+	status = ns8250_bus_probe(sc);
+	if (status == 0)
+		device_set_desc(sc->sc_dev, "MTK UART Controller (ns16550a)");
+        
+	return (status);
+}