[src/trunk]: src/sys/arch/arm/broadcom capture peer version; if less than 2, ...

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

details:   https://anonhg.NetBSD.org/src/rev/021b79a69fc7
branches:  trunk
changeset: 802107:021b79a69fc7
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Tue Sep 02 21:46:35 2014 +0000

description:
capture peer version; if less than 2, bail out as bulk mode is not supported. report the peer version with "audioctl version"

diffstat:

 sys/arch/arm/broadcom/bcm2835_vcaudio.c |  33 +++++++++++++++++++++++----------
 1 files changed, 23 insertions(+), 10 deletions(-)

diffs (87 lines):

diff -r cf6763a85403 -r 021b79a69fc7 sys/arch/arm/broadcom/bcm2835_vcaudio.c
--- a/sys/arch/arm/broadcom/bcm2835_vcaudio.c   Tue Sep 02 21:38:28 2014 +0000
+++ b/sys/arch/arm/broadcom/bcm2835_vcaudio.c   Tue Sep 02 21:46:35 2014 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: bcm2835_vcaudio.c,v 1.5 2014/09/02 10:40:51 jmcneill Exp $ */
+/* $NetBSD: bcm2835_vcaudio.c,v 1.6 2014/09/02 21:46:35 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2013 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: bcm2835_vcaudio.c,v 1.5 2014/09/02 10:40:51 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: bcm2835_vcaudio.c,v 1.6 2014/09/02 21:46:35 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/types.h>
@@ -102,6 +102,8 @@
        VCHI_CONNECTION_T               sc_connection;
        VCHI_SERVICE_HANDLE_T           sc_service;
 
+       short                           sc_peer_version;
+
        struct workqueue                *sc_wq;
        struct vcaudio_work             sc_work;
 
@@ -197,11 +199,6 @@
        aprint_naive("\n");
        aprint_normal(": AUDS\n");
 
-       if (vcaudio_init(sc) != 0) {
-               aprint_error_dev(self, "not configured\n");
-               return;
-       }
-
        vcaudio_rescan(self, NULL, NULL);
 }
 
@@ -209,8 +206,13 @@
 vcaudio_rescan(device_t self, const char *ifattr, const int *locs)
 {
        struct vcaudio_softc *sc = device_private(self);
+       int error;
 
        if (ifattr_match(ifattr, "audiobus") && sc->sc_audiodev == NULL) {
+               error = vcaudio_init(sc);
+               if (error)
+                       return error;
+
                sc->sc_audiodev = audio_attach_mi(&vcaudio_hw_if,
                    sc, sc->sc_dev);
        }
@@ -285,9 +287,16 @@
                    error);
                return EIO;
        }
-       vchi_service_release(sc->sc_service);
+
+       vchi_get_peer_version(sc->sc_service, &sc->sc_peer_version);
 
-       vchi_service_use(sc->sc_service);
+       if (sc->sc_peer_version < 2) {
+               aprint_error_dev(sc->sc_dev,
+                   "peer version (%d) is less than the required version (2)\n",
+                   sc->sc_peer_version);
+               return EINVAL;
+       }
+
        memset(&msg, 0, sizeof(msg));
        msg.type = VC_AUDIO_MSG_TYPE_OPEN;
        error = vchi_msg_queue(sc->sc_service, &msg, sizeof(msg),
@@ -656,9 +665,13 @@
 static int
 vcaudio_getdev(void *priv, struct audio_device *audiodev)
 {
+       struct vcaudio_softc *sc = priv;
+
        snprintf(audiodev->name, sizeof(audiodev->name), "VCHIQ AUDS");
-       snprintf(audiodev->version, sizeof(audiodev->version), "");
+       snprintf(audiodev->version, sizeof(audiodev->version),
+           "%d", sc->sc_peer_version);
        snprintf(audiodev->config, sizeof(audiodev->config), "vcaudio");
+
        return 0;
 }