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[src/trunk]: src/sys/arch/evbarm Imported n900lckbtn(4), a driver for the loc...
details: https://anonhg.NetBSD.org/src/rev/06bdcb4d5907
branches: trunk
changeset: 786141:06bdcb4d5907
user: khorben <khorben%NetBSD.org@localhost>
date: Wed Apr 17 01:06:13 2013 +0000
description:
Imported n900lckbtn(4), a driver for the lock button on the Nokia N900
smartphone. Currently reporting events via a hotkey, named after the driver
instance.
Tasted and approved.
diffstat:
sys/arch/evbarm/conf/N900 | 11 +-
sys/arch/evbarm/conf/files.n900 | 7 +-
sys/arch/evbarm/n900/n900_lckbtn.c | 194 +++++++++++++++++++++++++++++++++++++
3 files changed, 207 insertions(+), 5 deletions(-)
diffs (249 lines):
diff -r 3d818da80eb5 -r 06bdcb4d5907 sys/arch/evbarm/conf/N900
--- a/sys/arch/evbarm/conf/N900 Wed Apr 17 00:57:22 2013 +0000
+++ b/sys/arch/evbarm/conf/N900 Wed Apr 17 01:06:13 2013 +0000
@@ -1,5 +1,5 @@
#
-# $NetBSD: N900,v 1.9 2013/04/17 00:57:22 khorben Exp $
+# $NetBSD: N900,v 1.10 2013/04/17 01:06:13 khorben Exp $
#
# N900 -- Nokia N900 Kernel
#
@@ -205,9 +205,9 @@
# Interrupt Controller
omapicu0 at obio0 addr 0x48200000 size 0x1000 intrbase 0
omapgpio0 at obio1 addr 0x48310000 size 0x0400 intrbase 96 intr 29
-#omapgpio1 at obio2 addr 0x49050000 size 0x0400 intrbase 128 intr 30
-#omapgpio2 at obio2 addr 0x49052000 size 0x0400 intrbase 160 intr 31
-#omapgpio3 at obio2 addr 0x49054000 size 0x0400 intrbase 192 intr 32
+omapgpio1 at obio2 addr 0x49050000 size 0x0400 intrbase 128 intr 30
+omapgpio2 at obio2 addr 0x49052000 size 0x0400 intrbase 160 intr 31
+omapgpio3 at obio2 addr 0x49054000 size 0x0400 intrbase 192 intr 32
omapgpio4 at obio2 addr 0x49056000 size 0x0400 intrbase 224 intr 33
#omapgpio5 at obio2 addr 0x49058000 size 0x0400 intrbase 256 intr 34
@@ -217,6 +217,9 @@
# Charging sensor
n900acad0 at gpio0 offset 7 mask 0x1 #intr 103
+# Lock button
+n900lckbtn0 at gpio3 offset 17 mask 0x1 #intr 209
+
# System Control Module
omapscm0 at obio0 addr 0x48002000 size 0x1000
diff -r 3d818da80eb5 -r 06bdcb4d5907 sys/arch/evbarm/conf/files.n900
--- a/sys/arch/evbarm/conf/files.n900 Wed Apr 17 00:57:22 2013 +0000
+++ b/sys/arch/evbarm/conf/files.n900 Wed Apr 17 01:06:13 2013 +0000
@@ -1,4 +1,4 @@
-# $NetBSD: files.n900,v 1.2 2013/04/14 19:17:06 khorben Exp $
+# $NetBSD: files.n900,v 1.3 2013/04/17 01:06:14 khorben Exp $
#
# Nokia N900 configuration info
#
@@ -24,3 +24,8 @@
device n900acad: sysmon_envsys
attach n900acad at gpio with n900acad
file arch/evbarm/n900/n900_acad.c n900acad
+
+# Lock button
+device n900lckbtn: sysmon_envsys
+attach n900lckbtn at gpio with n900lckbtn
+file arch/evbarm/n900/n900_lckbtn.c n900lckbtn
diff -r 3d818da80eb5 -r 06bdcb4d5907 sys/arch/evbarm/n900/n900_lckbtn.c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sys/arch/evbarm/n900/n900_lckbtn.c Wed Apr 17 01:06:13 2013 +0000
@@ -0,0 +1,194 @@
+/* $NetBSD: n900_lckbtn.c,v 1.1 2013/04/17 01:06:14 khorben Exp $ */
+
+/*
+ * Lock button driver for the Nokia N900.
+ *
+ * Copyright (c) 2013 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Pierre Pronchery (khorben%defora.org@localhost).
+ *
+ * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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>
+__KERNEL_RCSID(0, "$NetBSD: n900_lckbtn.c,v 1.1 2013/04/17 01:06:14 khorben Exp $");
+
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/device.h>
+#include <sys/gpio.h>
+
+#include <dev/gpio/gpiovar.h>
+#include <dev/sysmon/sysmonvar.h>
+
+#include <arm/omap/omap2_gpio.h>
+
+
+/* The base interrupt for the corresponding GPIO device where this driver
+ * attaches. This is an ugly workaround the current limitations of gpio(4),
+ * which does not seem to allow a better way to locate the interrupt yet. */
+#define N900LCKBTN_GPIO_BASE 192
+
+#define N900LCKBTN_PIN_INPUT 0
+#define N900LCKBTN_NPINS 1
+
+
+struct n900lckbtn_softc
+{
+ device_t sc_dev;
+ void * sc_gpio;
+ void * sc_intr;
+
+ struct gpio_pinmap sc_map;
+ int sc_map_pins[N900LCKBTN_NPINS];
+
+ struct sysmon_pswitch sc_smpsw;
+ int sc_event;
+};
+
+static int n900lckbtn_match(device_t, cfdata_t, void *);
+static void n900lckbtn_attach(device_t, device_t, void *);
+static int n900lckbtn_detach(device_t, int);
+
+CFATTACH_DECL_NEW(n900lckbtn, sizeof(struct n900lckbtn_softc),
+ n900lckbtn_match, n900lckbtn_attach, n900lckbtn_detach, NULL);
+
+static void n900lckbtn_refresh(struct n900lckbtn_softc *);
+
+static int n900lckbtn_intr(void *v);
+
+
+static int
+n900lckbtn_match(device_t parent, cfdata_t cf, void * aux)
+{
+ struct gpio_attach_args *ga = aux;
+
+ if (strcmp(ga->ga_dvname, cf->cf_name))
+ return 0;
+
+ if (ga->ga_offset == -1)
+ return 0;
+
+ /* check that we have enough pins */
+ if (gpio_npins(ga->ga_mask) != N900LCKBTN_NPINS) {
+ aprint_debug("%s: invalid pin mask 0x%02x\n", cf->cf_name,
+ ga->ga_mask);
+ return 0;
+ }
+
+ return 1;
+}
+
+static void
+n900lckbtn_attach(device_t parent, device_t self, void *aux)
+{
+ struct n900lckbtn_softc *sc = device_private(self);
+ struct gpio_attach_args *ga = aux;
+ int caps;
+
+ sc->sc_dev = self;
+ sc->sc_gpio = ga->ga_gpio;
+
+ /* map pins */
+ sc->sc_map.pm_map = sc->sc_map_pins;
+ if (gpio_pin_map(sc->sc_gpio, ga->ga_offset, ga->ga_mask,
+ &sc->sc_map)) {
+ aprint_error(": could not map the pins\n");
+ return;
+ }
+
+ /* configure the input pin */
+ caps = gpio_pin_caps(sc->sc_gpio, &sc->sc_map, N900LCKBTN_PIN_INPUT);
+ if (!(caps & GPIO_PIN_INPUT)) {
+ aprint_error(": pin is unable to read input\n");
+ gpio_pin_unmap(sc->sc_gpio, &sc->sc_map);
+ return;
+ }
+ gpio_pin_ctl(sc->sc_gpio, &sc->sc_map, N900LCKBTN_PIN_INPUT,
+ GPIO_PIN_INPUT);
+
+ sc->sc_intr = intr_establish(N900LCKBTN_GPIO_BASE + ga->ga_offset,
+ IST_EDGE_BOTH, IPL_VM, n900lckbtn_intr, sc);
+ if (sc->sc_intr == NULL) {
+ aprint_error(": could not establish interrupt\n");
+ gpio_pin_unmap(sc->sc_gpio, &sc->sc_map);
+ return;
+ }
+
+ aprint_normal(": N900 lock button\n");
+ aprint_naive(": N900 lock button\n");
+
+ if (!pmf_device_register(sc->sc_dev, NULL, NULL)) {
+ aprint_error_dev(sc->sc_dev,
+ "could not establish power handler\n");
+ }
+
+ sc->sc_smpsw.smpsw_name = device_xname(self);
+ sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_HOTKEY;
+ sc->sc_event = PSWITCH_EVENT_RELEASED;
+ sysmon_pswitch_register(&sc->sc_smpsw);
+}
+
+static int
+n900lckbtn_detach(device_t self, int flags)
+{
+ struct n900lckbtn_softc *sc = device_private(self);
+
+ if (sc->sc_intr != NULL) {
+ intr_disestablish(sc->sc_intr);
+ }
+
+ gpio_pin_unmap(sc->sc_gpio, &sc->sc_map);
+ pmf_device_deregister(self);
+
+ return 0;
+}
+
+static int
+n900lckbtn_intr(void *v)
+{
+ struct n900lckbtn_softc *sc = v;
+
+ n900lckbtn_refresh(sc);
+ return 1;
+}
+
+static void
+n900lckbtn_refresh(struct n900lckbtn_softc *sc)
+{
+ int i;
+ int event;
+
+ i = gpio_pin_read(sc->sc_gpio, &sc->sc_map, N900LCKBTN_PIN_INPUT);
+ event = (i == GPIO_PIN_HIGH)
+ ? PSWITCH_EVENT_RELEASED : PSWITCH_EVENT_PRESSED;
+
+ /* crude way to avoid duplicate events */
+ if(event == sc->sc_event)
+ return;
+ sc->sc_event = event;
+
+ /* report the event */
+ sysmon_pswitch_event(&sc->sc_smpsw, event);
+}
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