machctl: r23 - sys

Author: vedge
Date: 2009-03-25 05:24:59 -0300 (Wed, 25 Mar 2009)
New Revision: 23

Added:
   sys/cnc_statled.c
   sys/cnc_statledvar.h
Log:
driver for general-purpose status LED

Added: sys/cnc_statled.c
===================================================================
--- sys/cnc_statled.c	                        (rev 0)
+++ sys/cnc_statled.c	2009-03-25 08:24:59 UTC (rev 23)
@@ -0,0 +1,127 @@
+/*
+ * Copyright (c) 2009 Hypertriton, Inc. <http://www.hypertriton.com/>
+ * 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 COPYRIGHT HOLDERS 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.
+ */
+
+/*
+ * Status LED for CNC operations.
+ */
+
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/ioctl.h>
+#include <sys/fcntl.h>
+#include <sys/vnode.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/pool.h>
+#include <sys/conf.h>
+#include <sys/lock.h>
+
+#include <sys/gpio.h>
+#include <sys/cnc.h>
+
+#include <dev/gpio/gpiovar.h>
+
+#include <dev/cnc/cnc_devicevar.h>
+#include <dev/cnc/cncvar.h>
+#include <dev/cnc/cnc_statledvar.h>
+
+int	cncstatled_match(struct device *, void *, void *);
+void	cncstatled_attach(struct device *, struct device *, void *);
+int	cncstatled_detach(struct device *, int);
+int	cncstatled_activate(struct device *, enum devact);
+void	cncstatled_abort_all(void);
+
+struct cfattach cncstatled_ca = {
+	sizeof(struct cncstatled_softc),
+	cncstatled_match,
+	cncstatled_attach,
+	cncstatled_detach,
+	cncstatled_activate
+};
+
+struct cfdriver cncstatled_cd = {
+	NULL, "cncstatled", DV_DULL
+};
+
+int
+cncstatled_match(struct device *parent, void *match, void *aux)
+{
+	struct cfdata *cf = match;
+
+	return (strcmp(cf->cf_driver->cd_name, "cncstatled") == 0);
+}
+
+void
+cncstatled_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct cncstatled_softc *sc = (struct cncstatled_softc *)self;
+	struct gpio_attach_args *ga = aux;
+
+	cnc_status_led = sc;
+
+	if (gpio_npins(ga->ga_mask) != 1) {
+		printf(": invalid pin mask\n");
+		return;
+	}
+	sc->sc_gpio = ga->ga_gpio;
+	sc->sc_map.pm_map = sc->__map;
+	if (gpio_pin_map(sc->sc_gpio, ga->ga_offset, ga->ga_mask,
+	    &sc->sc_map)) {
+		printf(": can't map pins\n");
+		return;
+	}
+
+	/* Map the output signal. */
+	CNC_MAP_OUTPUT(sc, 0, "LED");
+
+	printf("\n");
+	return;
+fail:
+	gpio_pin_unmap(sc->sc_gpio, &sc->sc_map);
+}
+
+int
+cncstatled_detach(struct device *self, int flags)
+{
+	return (0);
+}
+
+int
+cncstatled_activate(struct device *self, enum devact act)
+{
+	return (0);
+}
+
+/* Set the state of the LED. */
+void
+cncstatled_set(int state)
+{
+	struct cncstatled_softc *sc;
+
+	if ((sc = cnc_status_led) != NULL)
+		gpio_pin_write(sc->sc_gpio, &sc->sc_map, 0,
+	                       state ? GPIO_PIN_HIGH : GPIO_PIN_LOW);
+}

Added: sys/cnc_statledvar.h
===================================================================
--- sys/cnc_statledvar.h	                        (rev 0)
+++ sys/cnc_statledvar.h	2009-03-25 08:24:59 UTC (rev 23)
@@ -0,0 +1,10 @@
+/*	Public domain	*/
+
+struct cncstatled_softc {
+	struct cnc_device sc_cdev;
+	void *sc_gpio;
+	struct gpio_pinmap sc_map;
+	int __map[1];
+};
+
+void cncstatled_set(int);