power(4) driver for the power switch on many landisk models, hooked

up to machdep.kbdreset; modelled after the sparc64 power(4) driver

discussed with miod@ and jsg@

1 files changed, 110 insertions, 0 deletions

diff --git a/sys/arch/landisk/dev/power.c b/sys/arch/landisk/dev/power.c
new file mode 100644
index 00000000000..7553d724b5c
--- /dev/null
+++ b/sys/arch/landisk/dev/power.c
@@ -0,0 +1,110 @@
+/*	$OpenBSD: power.c,v 1.1 2007/01/15 22:22:18 martin Exp $	*/
+
+/*
+ * Copyright (c) 2007 Martin Reindl.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/systm.h>
+#include <sys/kernel.h>
+#include <sys/device.h>
+#include <sys/conf.h>
+#include <sys/proc.h>
+#include <sys/signalvar.h>
+
+#include <machine/bus.h>
+#include <machine/autoconf.h>
+
+#include <sh/include/devreg.h>
+
+#include <landisk/landisk/landiskreg.h>
+#include <landisk/dev/obiovar.h>
+
+struct power_softc {
+	struct device		sc_dev;
+	void			*sc_ih;
+};
+
+int	power_match(struct device *, void *, void *);
+void	power_attach(struct device *, struct device *, void *);
+int	power_intr(void *aux);
+
+struct cfattach power_ca = {
+	sizeof(struct power_softc),
+	power_match,
+	power_attach
+};
+
+struct cfdriver power_cd = {
+	NULL, "power", DV_DULL
+};
+
+struct power_softc *power_softc;
+
+int
+power_match(struct device *parent, void *match, void *aux)
+{
+	struct obio_attach_args *oa = aux;
+
+	oa->oa_nio = 0;
+	oa->oa_niomem = 0;
+	oa->oa_nirq = 1;
+	oa->oa_irq[0].or_irq = LANDISK_INTR_PWRSW;
+
+	return (1);
+}
+
+void
+power_attach(struct device *parent, struct device *self, void *aux)
+{
+	struct power_softc *sc = (void *)self;
+
+	power_softc = sc;
+
+	sc->sc_ih = extintr_establish(LANDISK_INTR_PWRSW, IPL_TTY,
+	    power_intr, sc, sc->sc_dev.dv_xname);
+	if (sc->sc_ih == NULL) {
+		printf(": couldn't map interrupt");
+		return;
+	}
+
+	printf("\n");
+}
+
+int
+power_intr(void *arg)
+{
+	extern int kbd_reset;
+	int status;
+
+	status = (int8_t)_reg_read_1(LANDISK_BTNSTAT);
+	if (status == -1) {
+		return (0);
+	}
+
+	status = ~status;
+	if ((status & BTN_POWER_BIT) && (kbd_reset == 1)) {
+#ifdef DEBUG
+		printf("%s switched\n", sc->sc_dev.dv_xname);
+#endif
+		Debugger();
+		kbd_reset = 0;
+		_reg_write_1(LANDISK_PWRSW_INTCLR, 1);
+		psignal(initproc, SIGUSR1);
+		return (1);
+	}
+	return (0);
+}