svn commit: r300550 - in head/sys: conf dev/iicbus dev/ofw
Luiz Otavio O Souza
loos at FreeBSD.org
Tue May 24 01:33:51 UTC 2016
Author: loos
Date: Tue May 24 01:33:49 2016
New Revision: 300550
URL: https://svnweb.freebsd.org/changeset/base/300550
Log:
Move the OFW iicbus code to dev/iicbus to stop polluting dev/ofw with
unrelated code.
Discussed with: nwhitehorn (a long time ago)
Added:
head/sys/dev/iicbus/ofw_iicbus.c
- copied unchanged from r300549, head/sys/dev/ofw/ofw_iicbus.c
Deleted:
head/sys/dev/ofw/ofw_iicbus.c
Modified:
head/sys/conf/files
head/sys/conf/files.powerpc
Modified: head/sys/conf/files
==============================================================================
--- head/sys/conf/files Tue May 24 01:20:30 2016 (r300549)
+++ head/sys/conf/files Tue May 24 01:33:49 2016 (r300550)
@@ -1575,6 +1575,7 @@ dev/iicbus/iicsmb.c optional iicsmb
dependency "iicbus_if.h"
dev/iicbus/iicoc.c optional iicoc
dev/iicbus/lm75.c optional lm75
+dev/iicbus/ofw_iicbus.c optional fdt iicbus
dev/iicbus/pcf8563.c optional pcf8563
dev/iicbus/s35390a.c optional s35390a
dev/iir/iir.c optional iir
@@ -2174,7 +2175,6 @@ dev/ofw/ofw_bus_if.m optional fdt
dev/ofw/ofw_bus_subr.c optional fdt
dev/ofw/ofw_fdt.c optional fdt
dev/ofw/ofw_if.m optional fdt
-dev/ofw/ofw_iicbus.c optional fdt iicbus
dev/ofw/ofw_subr.c optional fdt
dev/ofw/ofwbus.c optional fdt
dev/ofw/openfirm.c optional fdt
Modified: head/sys/conf/files.powerpc
==============================================================================
--- head/sys/conf/files.powerpc Tue May 24 01:20:30 2016 (r300549)
+++ head/sys/conf/files.powerpc Tue May 24 01:33:49 2016 (r300550)
@@ -44,6 +44,7 @@ dev/iicbus/adt746x.c optional ad
dev/iicbus/ds1631.c optional ds1631 powermac
dev/iicbus/ds1775.c optional ds1775 powermac
dev/iicbus/max6690.c optional max6690 powermac
+dev/iicbus/ofw_iicbus.c optional iicbus aim
dev/nand/nfc_fsl.c optional nand mpc85xx
dev/nand/nfc_rb.c optional nand mpc85xx
# ofw can be either aim or fdt: fdt case handled in files. aim only powerpc specific.
@@ -55,7 +56,6 @@ dev/ofw/ofw_if.m optional aim
dev/ofw/ofw_bus_subr.c optional aim
dev/ofw/ofw_console.c optional aim
dev/ofw/ofw_disk.c optional ofwd aim
-dev/ofw/ofw_iicbus.c optional iicbus aim
dev/ofw/ofwbus.c optional aim | fdt
dev/ofw/ofwpci.c optional pci
dev/ofw/ofw_standard.c optional aim powerpc
Copied: head/sys/dev/iicbus/ofw_iicbus.c (from r300549, head/sys/dev/ofw/ofw_iicbus.c)
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/iicbus/ofw_iicbus.c Tue May 24 01:33:49 2016 (r300550, copy of r300549, head/sys/dev/ofw/ofw_iicbus.c)
@@ -0,0 +1,238 @@
+/*-
+ * Copyright (c) 2009, Nathan Whitehorn <nwhitehorn at 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 unmodified, 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 <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/kernel.h>
+#include <sys/libkern.h>
+#include <sys/lock.h>
+#include <sys/module.h>
+#include <sys/mutex.h>
+
+#include <dev/iicbus/iicbus.h>
+#include <dev/iicbus/iiconf.h>
+#include <dev/ofw/ofw_bus.h>
+#include <dev/ofw/ofw_bus_subr.h>
+#include <dev/ofw/openfirm.h>
+
+#include "iicbus_if.h"
+
+/* Methods */
+static device_probe_t ofw_iicbus_probe;
+static device_attach_t ofw_iicbus_attach;
+static device_t ofw_iicbus_add_child(device_t dev, u_int order,
+ const char *name, int unit);
+static const struct ofw_bus_devinfo *ofw_iicbus_get_devinfo(device_t bus,
+ device_t dev);
+
+static device_method_t ofw_iicbus_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, ofw_iicbus_probe),
+ DEVMETHOD(device_attach, ofw_iicbus_attach),
+
+ /* Bus interface */
+ DEVMETHOD(bus_child_pnpinfo_str, ofw_bus_gen_child_pnpinfo_str),
+ DEVMETHOD(bus_add_child, ofw_iicbus_add_child),
+
+ /* ofw_bus interface */
+ DEVMETHOD(ofw_bus_get_devinfo, ofw_iicbus_get_devinfo),
+ DEVMETHOD(ofw_bus_get_compat, ofw_bus_gen_get_compat),
+ DEVMETHOD(ofw_bus_get_model, ofw_bus_gen_get_model),
+ DEVMETHOD(ofw_bus_get_name, ofw_bus_gen_get_name),
+ DEVMETHOD(ofw_bus_get_node, ofw_bus_gen_get_node),
+ DEVMETHOD(ofw_bus_get_type, ofw_bus_gen_get_type),
+
+ DEVMETHOD_END
+};
+
+struct ofw_iicbus_devinfo {
+ struct iicbus_ivar opd_dinfo; /* Must be the first. */
+ struct ofw_bus_devinfo opd_obdinfo;
+};
+
+devclass_t ofwiicbus_devclass;
+
+DEFINE_CLASS_1(iicbus, ofw_iicbus_driver, ofw_iicbus_methods,
+ sizeof(struct iicbus_softc), iicbus_driver);
+EARLY_DRIVER_MODULE(ofw_iicbus, iicbb, ofw_iicbus_driver, ofwiicbus_devclass,
+ 0, 0, BUS_PASS_BUS);
+EARLY_DRIVER_MODULE(ofw_iicbus, iichb, ofw_iicbus_driver, ofwiicbus_devclass,
+ 0, 0, BUS_PASS_BUS);
+MODULE_VERSION(ofw_iicbus, 1);
+MODULE_DEPEND(ofw_iicbus, iicbus, 1, 1, 1);
+
+static int
+ofw_iicbus_probe(device_t dev)
+{
+
+ if (ofw_bus_get_node(dev) == -1)
+ return (ENXIO);
+ device_set_desc(dev, "OFW I2C bus");
+
+ return (0);
+}
+
+static int
+ofw_iicbus_attach(device_t dev)
+{
+ struct iicbus_softc *sc = IICBUS_SOFTC(dev);
+ struct ofw_iicbus_devinfo *dinfo;
+ phandle_t child, node, root;
+ pcell_t freq, paddr;
+ device_t childdev;
+ ssize_t compatlen;
+ char compat[255];
+ char *curstr;
+ u_int iic_addr_8bit = 0;
+
+ sc->dev = dev;
+ mtx_init(&sc->lock, "iicbus", NULL, MTX_DEF);
+
+ /*
+ * If there is a clock-frequency property for the device node, use it as
+ * the starting value for the bus frequency. Then call the common
+ * routine that handles the tunable/sysctl which allows the FDT value to
+ * be overridden by the user.
+ */
+ node = ofw_bus_get_node(dev);
+ freq = 0;
+ OF_getencprop(node, "clock-frequency", &freq, sizeof(freq));
+ iicbus_init_frequency(dev, freq);
+
+ iicbus_reset(dev, IIC_FASTEST, 0, NULL);
+
+ bus_generic_probe(dev);
+ bus_enumerate_hinted_children(dev);
+
+ /*
+ * Check if we're running on a PowerMac, needed for the I2C
+ * address below.
+ */
+ root = OF_peer(0);
+ compatlen = OF_getprop(root, "compatible", compat,
+ sizeof(compat));
+ if (compatlen != -1) {
+ for (curstr = compat; curstr < compat + compatlen;
+ curstr += strlen(curstr) + 1) {
+ if (strncmp(curstr, "MacRISC", 7) == 0)
+ iic_addr_8bit = 1;
+ }
+ }
+
+ /*
+ * Attach those children represented in the device tree.
+ */
+ for (child = OF_child(node); child != 0; child = OF_peer(child)) {
+ /*
+ * Try to get the I2C address first from the i2c-address
+ * property, then try the reg property. It moves around
+ * on different systems.
+ */
+ if (OF_getencprop(child, "i2c-address", &paddr,
+ sizeof(paddr)) == -1)
+ if (OF_getencprop(child, "reg", &paddr,
+ sizeof(paddr)) == -1)
+ continue;
+
+ /*
+ * Now set up the I2C and OFW bus layer devinfo and add it
+ * to the bus.
+ */
+ dinfo = malloc(sizeof(struct ofw_iicbus_devinfo), M_DEVBUF,
+ M_NOWAIT | M_ZERO);
+ if (dinfo == NULL)
+ continue;
+ /*
+ * FreeBSD drivers expect I2C addresses to be expressed as
+ * 8-bit values. Apple OFW data contains 8-bit values, but
+ * Linux FDT data contains 7-bit values, so shift them up to
+ * 8-bit format.
+ */
+ if (iic_addr_8bit)
+ dinfo->opd_dinfo.addr = paddr;
+ else
+ dinfo->opd_dinfo.addr = paddr << 1;
+
+ if (ofw_bus_gen_setup_devinfo(&dinfo->opd_obdinfo, child) !=
+ 0) {
+ free(dinfo, M_DEVBUF);
+ continue;
+ }
+
+ childdev = device_add_child(dev, NULL, -1);
+ resource_list_init(&dinfo->opd_dinfo.rl);
+ ofw_bus_intr_to_rl(childdev, child,
+ &dinfo->opd_dinfo.rl, NULL);
+ device_set_ivars(childdev, dinfo);
+ }
+
+ /* Register bus */
+ OF_device_register_xref(OF_xref_from_node(node), dev);
+ return (bus_generic_attach(dev));
+}
+
+static device_t
+ofw_iicbus_add_child(device_t dev, u_int order, const char *name, int unit)
+{
+ device_t child;
+ struct ofw_iicbus_devinfo *devi;
+
+ child = device_add_child_ordered(dev, order, name, unit);
+ if (child == NULL)
+ return (child);
+ devi = malloc(sizeof(struct ofw_iicbus_devinfo), M_DEVBUF,
+ M_NOWAIT | M_ZERO);
+ if (devi == NULL) {
+ device_delete_child(dev, child);
+ return (0);
+ }
+
+ /*
+ * NULL all the OFW-related parts of the ivars for non-OFW
+ * children.
+ */
+ devi->opd_obdinfo.obd_node = -1;
+ devi->opd_obdinfo.obd_name = NULL;
+ devi->opd_obdinfo.obd_compat = NULL;
+ devi->opd_obdinfo.obd_type = NULL;
+ devi->opd_obdinfo.obd_model = NULL;
+
+ device_set_ivars(child, devi);
+
+ return (child);
+}
+
+static const struct ofw_bus_devinfo *
+ofw_iicbus_get_devinfo(device_t bus, device_t dev)
+{
+ struct ofw_iicbus_devinfo *dinfo;
+
+ dinfo = device_get_ivars(dev);
+ return (&dinfo->opd_obdinfo);
+}
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