Source-Changes-HG archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Old Index]
[src/trunk]: src/sys/dev/fdt Add support for system controller nodes.
details: https://anonhg.NetBSD.org/src/rev/a01eaff403f9
branches: trunk
changeset: 991150:a01eaff403f9
user: jmcneill <jmcneill%NetBSD.org@localhost>
date: Sat Jun 30 12:35:18 2018 +0000
description:
Add support for system controller nodes.
diffstat:
sys/dev/fdt/fdt_syscon.c | 98 +++++++++++++++++++++++++++++++++
sys/dev/fdt/fdtvar.h | 6 +-
sys/dev/fdt/files.fdt | 7 ++-
sys/dev/fdt/syscon.c | 138 +++++++++++++++++++++++++++++++++++++++++++++++
sys/dev/fdt/syscon.h | 54 ++++++++++++++++++
5 files changed, 301 insertions(+), 2 deletions(-)
diffs (truncated from 364 to 300 lines):
diff -r d582b2290613 -r a01eaff403f9 sys/dev/fdt/fdt_syscon.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/fdt/fdt_syscon.c Sat Jun 30 12:35:18 2018 +0000
@@ -0,0 +1,98 @@
+/* $NetBSD: fdt_syscon.c,v 1.1 2018/06/30 12:35:18 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2018 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * 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 <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: fdt_syscon.c,v 1.1 2018/06/30 12:35:18 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/kmem.h>
+#include <sys/queue.h>
+
+#include <libfdt.h>
+#include <dev/fdt/fdtvar.h>
+
+struct syscon;
+
+struct fdtbus_syscon {
+ device_t sc_dev;
+ int sc_phandle;
+ struct syscon *sc_syscon;
+
+ LIST_ENTRY(fdtbus_syscon) sc_next;
+};
+
+LIST_HEAD(fdtbus_syscon_h, fdtbus_syscon);
+static struct fdtbus_syscon_h fdtbus_syscons =
+ LIST_HEAD_INITIALIZER(fdtbus_syscons);
+
+int
+fdtbus_register_syscon(device_t dev, int phandle,
+ struct syscon *syscon)
+{
+ struct fdtbus_syscon *sc;
+
+ sc = kmem_alloc(sizeof(*sc), KM_SLEEP);
+ sc->sc_dev = dev;
+ sc->sc_phandle = phandle;
+ sc->sc_syscon = syscon;
+
+ LIST_INSERT_HEAD(&fdtbus_syscons, sc, sc_next);
+
+ return 0;
+}
+
+static struct fdtbus_syscon *
+fdtbus_get_syscon(int phandle)
+{
+ struct fdtbus_syscon *sc;
+
+ LIST_FOREACH(sc, &fdtbus_syscons, sc_next) {
+ if (sc->sc_phandle == phandle)
+ return sc;
+ }
+
+ return NULL;
+}
+
+struct syscon *
+fdtbus_syscon_acquire(int phandle, const char *prop)
+{
+ struct fdtbus_syscon *sc;
+ int sc_phandle;
+
+ sc_phandle = fdtbus_get_phandle(phandle, prop);
+ if (sc_phandle < 0)
+ return NULL;
+
+ sc = fdtbus_get_syscon(sc_phandle);
+ if (sc == NULL)
+ return NULL;
+
+ return sc->sc_syscon;
+}
diff -r d582b2290613 -r a01eaff403f9 sys/dev/fdt/fdtvar.h
--- a/sys/dev/fdt/fdtvar.h Sat Jun 30 12:23:24 2018 +0000
+++ b/sys/dev/fdt/fdtvar.h Sat Jun 30 12:35:18 2018 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: fdtvar.h,v 1.34 2018/06/12 10:28:55 jmcneill Exp $ */
+/* $NetBSD: fdtvar.h,v 1.35 2018/06/30 12:35:18 jmcneill Exp $ */
/*-
* Copyright (c) 2015 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -210,6 +210,8 @@
void (*reset)(device_t);
};
+struct syscon;
+
struct fdt_console {
int (*match)(int);
void (*consinit)(struct fdt_attach_args *, u_int);
@@ -256,6 +258,7 @@
const struct fdtbus_pwm_controller_func *);
int fdtbus_register_mmc_pwrseq(device_t, int,
const struct fdtbus_mmc_pwrseq_func *);
+int fdtbus_register_syscon(device_t, int, struct syscon *);
void fdtbus_set_decoderegprop(bool);
@@ -292,6 +295,7 @@
u_int, u_int);
int fdtbus_regulator_get_voltage(struct fdtbus_regulator *,
u_int *);
+struct syscon * fdtbus_syscon_acquire(int, const char *);
struct fdtbus_dma *fdtbus_dma_get(int, const char *, void (*)(void *), void *);
struct fdtbus_dma *fdtbus_dma_get_index(int, u_int, void (*)(void *),
diff -r d582b2290613 -r a01eaff403f9 sys/dev/fdt/files.fdt
--- a/sys/dev/fdt/files.fdt Sat Jun 30 12:23:24 2018 +0000
+++ b/sys/dev/fdt/files.fdt Sat Jun 30 12:35:18 2018 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.fdt,v 1.33 2018/06/30 10:50:30 jmcneill Exp $
+# $NetBSD: files.fdt,v 1.34 2018/06/30 12:35:18 jmcneill Exp $
include "external/bsd/libfdt/conf/files.libfdt"
@@ -59,6 +59,7 @@
file dev/fdt/fdt_regulator.c fdtbus
file dev/fdt/fdt_reset.c fdtbus
file dev/fdt/fdt_rtc.c fdtbus
+file dev/fdt/fdt_syscon.c fdtbus
file dev/fdt/fdt_pinctrl.c fdtbus
device cpus { } : fdtbus
@@ -69,6 +70,10 @@
attach mmcpwrseq at fdt
file dev/fdt/mmc_pwrseq_simple.c mmcpwrseq
+device syscon
+attach syscon at fdt
+file dev/fdt/syscon.c syscon
+
device pwmbacklight
attach pwmbacklight at fdt
file dev/fdt/pwm_backlight.c pwmbacklight
diff -r d582b2290613 -r a01eaff403f9 sys/dev/fdt/syscon.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/dev/fdt/syscon.c Sat Jun 30 12:35:18 2018 +0000
@@ -0,0 +1,138 @@
+/* $NetBSD: syscon.c,v 1.1 2018/06/30 12:35:18 jmcneill Exp $ */
+
+/*-
+ * Copyright (c) 2018 Jared McNeill <jmcneill%invisible.ca@localhost>
+ * 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 <sys/cdefs.h>
+__KERNEL_RCSID(0, "$NetBSD: syscon.c,v 1.1 2018/06/30 12:35:18 jmcneill Exp $");
+
+#include <sys/param.h>
+#include <sys/bus.h>
+#include <sys/device.h>
+#include <sys/systm.h>
+#include <sys/sysctl.h>
+#include <sys/kmem.h>
+#include <sys/gpio.h>
+
+#include <dev/fdt/fdtvar.h>
+#include <dev/fdt/syscon.h>
+
+struct syscon_softc {
+ device_t sc_dev;
+ bus_space_tag_t sc_bst;
+ bus_space_handle_t sc_bsh;
+ kmutex_t sc_lock;
+
+ struct syscon sc_syscon;
+};
+
+static int syscon_match(device_t, cfdata_t, void *);
+static void syscon_attach(device_t, device_t, void *);
+
+static const char *compatible[] = {
+ "syscon",
+ NULL
+};
+
+CFATTACH_DECL_NEW(syscon, sizeof(struct syscon_softc),
+ syscon_match, syscon_attach, NULL, NULL);
+
+static void
+syscon_generic_lock(void *priv)
+{
+ struct syscon_softc * const sc = priv;
+
+ mutex_enter(&sc->sc_lock);
+}
+
+static void
+syscon_generic_unlock(void *priv)
+{
+ struct syscon_softc * const sc = priv;
+
+ mutex_exit(&sc->sc_lock);
+}
+
+static uint32_t
+syscon_generic_read_4(void *priv, bus_size_t reg)
+{
+ struct syscon_softc * const sc = priv;
+
+ KASSERT(mutex_owned(&sc->sc_lock));
+
+ return bus_space_read_4(sc->sc_bst, sc->sc_bsh, reg);
+}
+
+static void
+syscon_generic_write_4(void *priv, bus_size_t reg, uint32_t val)
+{
+ struct syscon_softc * const sc = priv;
+
+ KASSERT(mutex_owned(&sc->sc_lock));
+
+ bus_space_write_4(sc->sc_bst, sc->sc_bsh, reg, val);
+}
+
+static int
+syscon_match(device_t parent, cfdata_t cf, void *aux)
+{
+ struct fdt_attach_args * const faa = aux;
+
+ return of_match_compatible(faa->faa_phandle, compatible);
+}
+
+static void
+syscon_attach(device_t parent, device_t self, void *aux)
+{
+ struct syscon_softc * const sc = device_private(self);
+ struct fdt_attach_args * const faa = aux;
+ const int phandle = faa->faa_phandle;
+ bus_addr_t addr;
+ bus_size_t size;
+
+ if (fdtbus_get_reg(phandle, 0, &addr, &size) != 0) {
+ aprint_error(": couldn't get registers\n");
+ return;
+ }
+
+ sc->sc_dev = self;
+ sc->sc_bst = faa->faa_bst;
+ if (bus_space_map(sc->sc_bst, addr, size, 0, &sc->sc_bsh) != 0) {
+ aprint_error(": couldn't map registers\n");
+ return;
+ }
+ mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_VM);
+ sc->sc_syscon.priv = sc;
+ sc->sc_syscon.lock = syscon_generic_lock;
+ sc->sc_syscon.unlock = syscon_generic_unlock;
+ sc->sc_syscon.read_4 = syscon_generic_read_4;
+ sc->sc_syscon.write_4 = syscon_generic_write_4;
Home |
Main Index |
Thread Index |
Old Index