Remove uart_dev_mtk_ns8250

The purpose of this file was to simply detect the UART speed before
attaching the actual ns8250 driver so that we don't have to specify the
UART speed in DTS files.

However, OpenWRT DTS files specify ns16550a as a compatible string in
their DTS files and this makes the original ns8250 driver attach to
the device. So we would have to edit the DTS files anyway and since this
is only the case for MT7621 and MT7628/MT7688 for now, it's better to
just add the clock-frequency property to those (UART is always clocked
by the same clock in both these SoCs, so that's fine) instead of having
a separate driver and still having to change the DTS files.

Approved by:	adrian (mentor)
Sponsored by:	Smartcom - Bulgaria AD
Differential Revision:	https://reviews.freebsd.org/D6044

2 files changed, 0 insertions, 114 deletions

diff --git a/sys/mips/mediatek/files.mediatek b/sys/mips/mediatek/files.mediatek
index 1345920..b99f6a5 100644
--- a/sys/mips/mediatek/files.mediatek
+++ b/sys/mips/mediatek/files.mediatek
@@ -11,7 +11,6 @@ mips/mediatek/mtk_intr_v1.c 		optional mtk_intr_v1
 mips/mediatek/mtk_intr_v2.c 		optional mtk_intr_v2
 mips/mediatek/mtk_intr_gic.c 		optional mtk_intr_gic
 mips/mediatek/uart_dev_mtk.c 		optional uart uart_dev_mtk
-mips/mediatek/uart_dev_mtk_ns8250.c 	optional uart uart_ns8250
 mips/mediatek/mtk_spi_v1.c 		optional spibus mtk_spi_v1
 mips/mediatek/mtk_spi_v2.c 		optional spibus mtk_spi_v2
 mips/mediatek/mtk_usb_phy.c 		optional usb mtk_usb_phy
diff --git a/sys/mips/mediatek/uart_dev_mtk_ns8250.c b/sys/mips/mediatek/uart_dev_mtk_ns8250.c
deleted file mode 100644
index 3c259ff..0000000
--- a/sys/mips/mediatek/uart_dev_mtk_ns8250.c
+++ /dev/null
@@ -1,113 +0,0 @@
-/*-
- * 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);
-}