Author: ian
Date: Wed Oct 30 14:38:24 2013
New Revision: 257384
URL: http://svnweb.freebsd.org/changeset/base/257384
Log:
Add a "no-op" USB PHY driver for imx-family SoCs. This is used when the
phy clocks need to be enabled, but no other hardware setup is needed to
make the phy work.
Added:
head/sys/arm/freescale/imx/imx_nop_usbphy.c (contents, props changed)
Modified:
head/sys/arm/freescale/imx/files.imx51
head/sys/arm/freescale/imx/files.imx53
Modified: head/sys/arm/freescale/imx/files.imx51
==============================================================================
--- head/sys/arm/freescale/imx/files.imx51 Wed Oct 30 14:33:15 2013
(r257383)
+++ head/sys/arm/freescale/imx/files.imx51 Wed Oct 30 14:38:24 2013
(r257384)
@@ -37,7 +37,8 @@ dev/ata/chipsets/ata-fsl.c optional imx
# UART driver
dev/uart/uart_dev_imx.c optional uart
-# USB join controller (1 OTG, 3 EHCI)
+# USB OH3 controller (1 OTG, 3 EHCI)
+arm/freescale/imx/imx_nop_usbphy.c optional echi
dev/usb/controller/ehci_imx.c optional ehci
# Watchdog
Modified: head/sys/arm/freescale/imx/files.imx53
==============================================================================
--- head/sys/arm/freescale/imx/files.imx53 Wed Oct 30 14:33:15 2013
(r257383)
+++ head/sys/arm/freescale/imx/files.imx53 Wed Oct 30 14:38:24 2013
(r257384)
@@ -37,7 +37,8 @@ arm/freescale/imx/imx51_ccm.c standard
# i.MX5xx PATA controller
dev/ata/chipsets/ata-fsl.c optional imxata
-# USB join controller (1 OTG, 3 EHCI)
+# USB OH3 controller (1 OTG, 3 EHCI)
+arm/freescale/imx/imx_nop_usbphy.c optional ehci
dev/usb/controller/ehci_imx.c optional ehci
# Watchdog
Added: head/sys/arm/freescale/imx/imx_nop_usbphy.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/arm/freescale/imx/imx_nop_usbphy.c Wed Oct 30 14:38:24 2013
(r257384)
@@ -0,0 +1,118 @@
+/*-
+ * Copyright (c) 2013 Ian Lepore <i...@freebsd.org>
+ * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+/*
+ * USBPHY "no-op" driver for Freescale family of SoCs. This driver is used on
+ * SoCs which have usbphy hardware whose clocks need to be enabled, but no
other
+ * action has to be taken to make the hardware work.
+ */
+
+#include "opt_bus.h"
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/module.h>
+#include <sys/bus.h>
+#include <sys/rman.h>
+
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+
+#include <machine/bus.h>
+
+#include <arm/freescale/imx/imx_machdep.h>
+
+/*
+ * Table of supported FDT compat strings.
+ */
+static struct ofw_compat_data compat_data[] = {
+ {"nop-usbphy", true},
+ {"usb-nop-xceiv", true},
+ {NULL, false},
+};
+
+struct usbphy_softc {
+ device_t dev;
+ u_int phy_num;
+};
+
+static int
+usbphy_detach(device_t dev)
+{
+
+ return (0);
+}
+
+static int
+usbphy_attach(device_t dev)
+{
+ struct usbphy_softc *sc;
+
+ sc = device_get_softc(dev);
+
+ /*
+ * Turn on the phy clocks.
+ */
+ imx_ccm_usbphy_enable(dev);
+
+ return (0);
+}
+
+static int
+usbphy_probe(device_t dev)
+{
+
+ if (ofw_bus_search_compatible(dev, compat_data)->ocd_data != 0) {
+ device_set_desc(dev, "Freescale USB PHY");
+ return (BUS_PROBE_DEFAULT);
+ }
+
+ return (ENXIO);
+}
+
+static device_method_t usbphy_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, usbphy_probe),
+ DEVMETHOD(device_attach, usbphy_attach),
+ DEVMETHOD(device_detach, usbphy_detach),
+
+ DEVMETHOD_END
+};
+
+static driver_t usbphy_driver = {
+ "usbphy",
+ usbphy_methods,
+ sizeof(struct usbphy_softc)
+};
+
+static devclass_t usbphy_devclass;
+
+DRIVER_MODULE(usbphy, simplebus, usbphy_driver, usbphy_devclass, 0, 0);
+
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