[src/trunk]: src/sys/dev/gpio Add glue code to build as module.

[mbalmer <mbalmer%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/81d772090ea7
branches:  trunk
changeset: 769089:81d772090ea7
user:      mbalmer <mbalmer%NetBSD.org@localhost>
date:      Wed Aug 31 12:23:32 2011 +0000

description:
Add glue code to build as module.

diffstat:

 sys/dev/gpio/gpioow.c |  51 +++++++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 43 insertions(+), 8 deletions(-)

diffs (100 lines):

diff -r 8915a3a47e53 -r 81d772090ea7 sys/dev/gpio/gpioow.c
--- a/sys/dev/gpio/gpioow.c     Wed Aug 31 12:20:35 2011 +0000
+++ b/sys/dev/gpio/gpioow.c     Wed Aug 31 12:23:32 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: gpioow.c,v 1.12 2009/11/12 19:22:08 dyoung Exp $ */
+/* $NetBSD: gpioow.c,v 1.13 2011/08/31 12:23:32 mbalmer Exp $ */
 /*     $OpenBSD: gpioow.c,v 1.1 2006/03/04 16:27:03 grange Exp $       */
 
 /*
@@ -18,7 +18,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gpioow.c,v 1.12 2009/11/12 19:22:08 dyoung Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gpioow.c,v 1.13 2011/08/31 12:23:32 mbalmer Exp $");
 
 /*
  * 1-Wire bus bit-banging through GPIO pin.
@@ -28,6 +28,7 @@
 #include <sys/systm.h>
 #include <sys/device.h>
 #include <sys/gpio.h>
+#include <sys/module.h>
 
 #include <dev/gpio/gpiovar.h>
 
@@ -107,18 +108,20 @@
        if (gpio_pin_map(sc->sc_gpio, ga->ga_offset, ga->ga_mask,
            &sc->sc_map)) {
                aprint_error(": can't map pins\n");
-               return;
+               goto finish;
        }
 
        /* Configure data pin */
        caps = gpio_pin_caps(sc->sc_gpio, &sc->sc_map, GPIOOW_PIN_DATA);
        if (!(caps & GPIO_PIN_OUTPUT)) {
                aprint_error(": data pin is unable to drive output\n");
-               goto fail;
+               gpio_pin_unmap(sc->sc_gpio, &sc->sc_map);
+               goto finish;
        }
        if (!(caps & GPIO_PIN_INPUT)) {
                aprint_error(": data pin is unable to read input\n");
-               goto fail;
+               gpio_pin_unmap(sc->sc_gpio, &sc->sc_map);
+               goto finish;
        }
        aprint_normal(": DATA[%d]", sc->sc_map.pm_map[GPIOOW_PIN_DATA]);
        sc->sc_data = GPIO_PIN_OUTPUT;
@@ -149,10 +152,8 @@
        if (!pmf_device_register(self, NULL, NULL))
                aprint_error("%s: could not establish power handler\n",
                    device_xname(self));
+finish:
        return;
-
-fail:
-       gpio_pin_unmap(sc->sc_gpio, &sc->sc_map);
 }
 
 int
@@ -246,3 +247,37 @@
        gpio_pin_write(sc->sc_gpio, &sc->sc_map, GPIOOW_PIN_DATA,
            value ? GPIO_PIN_HIGH : GPIO_PIN_LOW);
 }
+
+MODULE(MODULE_CLASS_DRIVER, gpioow, "gpio,onewire");
+
+#ifdef _MODULE
+#include "ioconf.c"
+#endif
+
+static int
+gpioow_modcmd(modcmd_t cmd, void *opaque)
+{
+       int error;
+
+       error = 0;
+       switch (cmd) {
+       case MODULE_CMD_INIT:
+#ifdef _MODULE
+               error = config_init_component(cfdriver_ioconf_gpioow,
+                   cfattach_ioconf_gpioow, cfdata_ioconf_gpioow);
+               if (error)
+                       aprint_error("%s: unable to init component\n",
+                           gpioow_cd.cd_name);
+#endif
+               break;
+       case MODULE_CMD_FINI:
+#ifdef _MODULE
+               config_fini_component(cfdriver_ioconf_gpioow,
+                   cfattach_ioconf_gpioow, cfdata_ioconf_gpioow);
+#endif
+               break;
+       default:
+               error = ENOTTY;
+       }
+       return error;
+}