--- /dev/null
+/*
+ *
+ * $Id$
+ *
+ * Copyright (C) 2005 Mike Isely <isely@pobox.com>
+ * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include "pvrusb2-audio.h"
+#include "pvrusb2-hdw-internal.h"
+#include "pvrusb2-debug.h"
+#include <linux/videodev2.h>
+#include <media/msp3400.h>
+#include <media/v4l2-common.h>
+
+struct pvr2_msp3400_handler {
+ struct pvr2_hdw *hdw;
+ struct pvr2_i2c_client *client;
+ struct pvr2_i2c_handler i2c_handler;
+ struct pvr2_audio_stat astat;
+ unsigned long stale_mask;
+};
+
+
+/* This function selects the correct audio input source */
+static void set_stereo(struct pvr2_msp3400_handler *ctxt)
+{
+ struct pvr2_hdw *hdw = ctxt->hdw;
+ struct v4l2_routing route;
+
+ pvr2_trace(PVR2_TRACE_CHIPS,"i2c msp3400 v4l2 set_stereo");
+
+ if (hdw->input_val == PVR2_CVAL_INPUT_TV) {
+ struct v4l2_tuner vt;
+ memset(&vt,0,sizeof(vt));
+ vt.audmode = hdw->audiomode_val;
+ pvr2_i2c_client_cmd(ctxt->client,VIDIOC_S_TUNER,&vt);
+ }
+
+ route.input = MSP_INPUT_DEFAULT;
+ route.output = MSP_OUTPUT(MSP_SC_IN_DSP_SCART1);
+ switch (hdw->input_val) {
+ case PVR2_CVAL_INPUT_TV:
+ break;
+ case PVR2_CVAL_INPUT_RADIO:
+ /* Assume that msp34xx also handle FM decoding, in which case
+ we're still using the tuner. */
+ /* HV: actually it is more likely to be the SCART2 input if
+ the ivtv experience is any indication. */
+ route.input = MSP_INPUT(MSP_IN_SCART2, MSP_IN_TUNER1,
+ MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
+ break;
+ case PVR2_CVAL_INPUT_SVIDEO:
+ case PVR2_CVAL_INPUT_COMPOSITE:
+ /* SCART 1 input */
+ route.input = MSP_INPUT(MSP_IN_SCART1, MSP_IN_TUNER1,
+ MSP_DSP_IN_SCART, MSP_DSP_IN_SCART);
+ break;
+ }
+ pvr2_i2c_client_cmd(ctxt->client,VIDIOC_INT_S_AUDIO_ROUTING,&route);
+}
+
+
+static int check_stereo(struct pvr2_msp3400_handler *ctxt)
+{
+ struct pvr2_hdw *hdw = ctxt->hdw;
+ return (hdw->input_dirty ||
+ hdw->audiomode_dirty);
+}
+
+
+struct pvr2_msp3400_ops {
+ void (*update)(struct pvr2_msp3400_handler *);
+ int (*check)(struct pvr2_msp3400_handler *);
+};
+
+
+static const struct pvr2_msp3400_ops msp3400_ops[] = {
+ { .update = set_stereo, .check = check_stereo},
+};
+
+
+static int msp3400_check(struct pvr2_msp3400_handler *ctxt)
+{
+ unsigned long msk;
+ unsigned int idx;
+
+ for (idx = 0; idx < sizeof(msp3400_ops)/sizeof(msp3400_ops[0]);
+ idx++) {
+ msk = 1 << idx;
+ if (ctxt->stale_mask & msk) continue;
+ if (msp3400_ops[idx].check(ctxt)) {
+ ctxt->stale_mask |= msk;
+ }
+ }
+ return ctxt->stale_mask != 0;
+}
+
+
+static void msp3400_update(struct pvr2_msp3400_handler *ctxt)
+{
+ unsigned long msk;
+ unsigned int idx;
+
+ for (idx = 0; idx < sizeof(msp3400_ops)/sizeof(msp3400_ops[0]);
+ idx++) {
+ msk = 1 << idx;
+ if (!(ctxt->stale_mask & msk)) continue;
+ ctxt->stale_mask &= ~msk;
+ msp3400_ops[idx].update(ctxt);
+ }
+}
+
+
+/* This reads back the current signal type */
+static int get_audio_status(struct pvr2_msp3400_handler *ctxt)
+{
+ struct v4l2_tuner vt;
+ int stat;
+
+ memset(&vt,0,sizeof(vt));
+ stat = pvr2_i2c_client_cmd(ctxt->client,VIDIOC_G_TUNER,&vt);
+ if (stat < 0) return stat;
+
+ ctxt->hdw->flag_stereo = (vt.audmode & V4L2_TUNER_MODE_STEREO) != 0;
+ ctxt->hdw->flag_bilingual =
+ (vt.audmode & V4L2_TUNER_MODE_LANG2) != 0;
+ return 0;
+}
+
+
+static void pvr2_msp3400_detach(struct pvr2_msp3400_handler *ctxt)
+{
+ ctxt->client->handler = NULL;
+ ctxt->hdw->audio_stat = NULL;
+ kfree(ctxt);
+}
+
+
+static unsigned int pvr2_msp3400_describe(struct pvr2_msp3400_handler *ctxt,
+ char *buf,unsigned int cnt)
+{
+ return scnprintf(buf,cnt,"handler: pvrusb2-audio v4l2");
+}
+
+
+const static struct pvr2_i2c_handler_functions msp3400_funcs = {
+ .detach = (void (*)(void *))pvr2_msp3400_detach,
+ .check = (int (*)(void *))msp3400_check,
+ .update = (void (*)(void *))msp3400_update,
+ .describe = (unsigned int (*)(void *,char *,unsigned int))pvr2_msp3400_describe,
+};
+
+
+int pvr2_i2c_msp3400_setup(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
+{
+ struct pvr2_msp3400_handler *ctxt;
+ if (hdw->audio_stat) return 0;
+ if (cp->handler) return 0;
+
+ ctxt = kmalloc(sizeof(*ctxt),GFP_KERNEL);
+ if (!ctxt) return 0;
+ memset(ctxt,0,sizeof(*ctxt));
+
+ ctxt->i2c_handler.func_data = ctxt;
+ ctxt->i2c_handler.func_table = &msp3400_funcs;
+ ctxt->client = cp;
+ ctxt->hdw = hdw;
+ ctxt->astat.ctxt = ctxt;
+ ctxt->astat.status = (int (*)(void *))get_audio_status;
+ ctxt->astat.detach = (void (*)(void *))pvr2_msp3400_detach;
+ ctxt->stale_mask = (1 << (sizeof(msp3400_ops)/
+ sizeof(msp3400_ops[0]))) - 1;
+ cp->handler = &ctxt->i2c_handler;
+ hdw->audio_stat = &ctxt->astat;
+ pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x msp3400 V4L2 handler set up",
+ cp->client->addr);
+ return !0;
+}
+
+
+/*
+ Stuff for Emacs to see, in order to encourage consistent editing style:
+ *** Local Variables: ***
+ *** mode: c ***
+ *** fill-column: 70 ***
+ *** tab-width: 8 ***
+ *** c-basic-offset: 8 ***
+ *** End: ***
+ */
git://git.onelab.eu / linux-2.6.git / blobdiff