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From: Warner Losh <imp@FreeBSD.org>
To: Perforce Change Reviews <perforce@freebsd.org>
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Subject: PERFORCE change 105480 for review
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http://perforce.freebsd.org/chv.cgi?CH=105480

Change 105480 by imp@imp_lighthouse on 2006/09/01 19:45:57

	quick hack: implement in/out gpio good.
	# Still need to do configuration and status query

Affected files ...

.. //depot/projects/arm/src/sys/arm/at91/at91_pio.c#16 edit
.. //depot/projects/arm/src/sys/sys/gpio.h#1 add

Differences ...

==== //depot/projects/arm/src/sys/arm/at91/at91_pio.c#16 (text+ko) ====

@@ -29,6 +29,7 @@
 #include <sys/systm.h>
 #include <sys/bus.h>
 #include <sys/conf.h>
+#include <sys/gpio.h>
 #include <sys/kernel.h>
 #include <sys/lock.h>
 #include <sys/mbuf.h>
@@ -271,7 +272,26 @@
 at91_pio_ioctl(struct cdev *dev, u_long cmd, caddr_t data, int fflag,
     struct thread *td)
 {
-	return (ENXIO);
+	struct at91_pio_softc *sc = CDEV2SOFTC(dev);
+
+	switch(cmd) {
+	case GPIO_SET:	/* turn bits on */
+		WR4(sc, PIO_SODR, *(uint32_t *)data);
+		return (0);
+	case GPIO_CLR:	/* turn bits off */
+		WR4(sc, PIO_CODR, *(uint32_t *)data);
+		return (0);
+	case GPIO_GET:	/* Get the status of output bits */
+		*(uint32_t *)data = RD4(sc, PIO_ODSR);
+		return (0);
+	case GPIO_READ:	/* Get the status of input bits */
+		*(uint32_t *)data = RD4(sc, PIO_PDSR);
+		return (0);
+	case GPIO_INFO:	/* Learn about this device's GPIO bits */
+	case GPIO_CFG:	/* Configure GPIO pins */
+		break;
+	}
+	return (ENOTTY);
 }
 
 /*