[src/trunk]: src/sys/dev/pad Add support to be built as a kernel module.

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

details:   https://anonhg.NetBSD.org/src/rev/391462b19f18
branches:  trunk
changeset: 753765:391462b19f18
user:      ahoka <ahoka%NetBSD.org@localhost>
date:      Fri Apr 09 13:39:17 2010 +0000

description:
Add support to be built as a kernel module.

diffstat:

 sys/dev/pad/pad.c |  102 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 1 files changed, 100 insertions(+), 2 deletions(-)

diffs (127 lines):

diff -r 435a7cb733d2 -r 391462b19f18 sys/dev/pad/pad.c
--- a/sys/dev/pad/pad.c Fri Apr 09 12:50:34 2010 +0000
+++ b/sys/dev/pad/pad.c Fri Apr 09 13:39:17 2010 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: pad.c,v 1.12 2010/01/18 23:57:14 dyoung Exp $ */
+/* $NetBSD: pad.c,v 1.13 2010/04/09 13:39:17 ahoka Exp $ */
 
 /*-
  * Copyright (c) 2007 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: pad.c,v 1.12 2010/01/18 23:57:14 dyoung Exp $");
+__KERNEL_RCSID(0, "$NetBSD: pad.c,v 1.13 2010/04/09 13:39:17 ahoka Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -41,6 +41,7 @@
 #include <sys/select.h>
 #include <sys/audioio.h>
 #include <sys/vnode.h>
+#include <sys/module.h>
 
 #include <dev/audio_if.h>
 #include <dev/audiovar.h>
@@ -566,3 +567,100 @@
 {
        return PAD_BLKSIZE;
 }
+
+#ifdef _MODULE
+
+MODULE(MODULE_CLASS_DRIVER, pad, NULL);
+
+static const struct cfiattrdata audiobuscf_iattrdata = {
+       "audiobus", 0, { { NULL, NULL, 0 }, }
+};
+static const struct cfiattrdata * const pad_attrs[] = {
+       &audiobuscf_iattrdata, NULL
+};
+
+CFDRIVER_DECL(pad, DV_DULL, pad_attrs);
+extern struct cfattach pad_ca;
+static int padloc[] = { -1, -1 };
+
+static struct cfdata pad_cfdata[] = {
+       {
+               .cf_name = "pad",
+               .cf_atname = "pad",
+               .cf_unit = 0,
+               .cf_fstate = FSTATE_STAR,
+               .cf_loc = padloc,
+               .cf_flags = 0,
+               .cf_pspec = NULL,
+       },
+       { NULL }
+};
+
+static int
+pad_modcmd(modcmd_t cmd, void *arg)
+{
+       devmajor_t cmajor = NODEVMAJOR, bmajor = NODEVMAJOR;
+       int error, s;
+
+       switch (cmd) {
+       case MODULE_CMD_INIT:
+               error = config_cfdriver_attach(&pad_cd);
+               if (error) {
+                       return error;
+               }
+
+               error = config_cfattach_attach(pad_cd.cd_name, &pad_ca);
+               if (error) {
+                       config_cfdriver_detach(&pad_cd);
+                       aprint_error("%s: unable to register cfattach\n",
+                               pad_cd.cd_name);
+
+                       return error;
+               }
+
+               s = splaudio();
+               error = config_cfdata_attach(pad_cfdata, 1);
+               splx(s);
+               if (error) {
+                       config_cfattach_detach(pad_cd.cd_name, &pad_ca);
+                       config_cfdriver_detach(&pad_cd);
+                       aprint_error("%s: unable to register cfdata\n",
+                               pad_cd.cd_name);
+
+                       return error;
+               }
+
+               error = devsw_attach(pad_cd.cd_name, NULL, &bmajor, &pad_cdevsw, &cmajor);
+               if (error) {
+                       error = config_cfdata_detach(pad_cfdata);
+                       if (error) {
+                               return error;
+                       }
+                       config_cfattach_detach(pad_cd.cd_name, &pad_ca);
+                       config_cfdriver_detach(&pad_cd);
+                       aprint_error("%s: unable to register devsw\n",
+                               pad_cd.cd_name);
+
+                       return error;
+               }
+
+               (void)config_attach_pseudo(pad_cfdata);
+
+               return 0;
+       case MODULE_CMD_FINI:
+               error = config_cfdata_detach(pad_cfdata);
+               if (error) {
+                       return error;
+               }
+
+               config_cfattach_detach(pad_cd.cd_name, &pad_ca);
+               config_cfdriver_detach(&pad_cd);
+               devsw_detach(NULL, &pad_cdevsw);
+
+               return 0;
+       default:
+               return ENOTTY;
+       }
+}
+
+#endif