This commit was manufactured by cvs2svn to create branch 'vserver'.

[linux-2.6.git] / drivers / media / video / pvrusb2 / pvrusb2-tuner.c

diff --git a/drivers/media/video/pvrusb2/pvrusb2-tuner.c b/drivers/media/video/pvrusb2/pvrusb2-tuner.c
new file mode 100644 (file)
index 0000000..af9f246
--- /dev/null
+++ b/drivers/media/video/pvrusb2/pvrusb2-tuner.c
@@ -0,0 +1,122 @@
+/*
+ *
+ *  $Id$
+ *
+ *  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.h"
+#include "pvrusb2-util.h"
+#include "pvrusb2-tuner.h"
+#include "pvrusb2-hdw-internal.h"
+#include "pvrusb2-debug.h"
+#include <linux/videodev2.h>
+#include <media/tuner.h>
+#include <media/v4l2-common.h>
+
+struct pvr2_tuner_handler {
+       struct pvr2_hdw *hdw;
+       struct pvr2_i2c_client *client;
+       struct pvr2_i2c_handler i2c_handler;
+       int type_update_fl;
+};
+
+
+static void set_type(struct pvr2_tuner_handler *ctxt)
+{
+       struct pvr2_hdw *hdw = ctxt->hdw;
+       struct tuner_setup setup;
+       pvr2_trace(PVR2_TRACE_CHIPS,"i2c tuner set_type(%d)",hdw->tuner_type);
+       if (((int)(hdw->tuner_type)) < 0) return;
+
+       setup.addr = ADDR_UNSET;
+       setup.type = hdw->tuner_type;
+       setup.mode_mask = T_RADIO | T_ANALOG_TV;
+       /* We may really want mode_mask to be T_ANALOG_TV for now */
+       pvr2_i2c_client_cmd(ctxt->client,TUNER_SET_TYPE_ADDR,&setup);
+       ctxt->type_update_fl = 0;
+}
+
+
+static int tuner_check(struct pvr2_tuner_handler *ctxt)
+{
+       struct pvr2_hdw *hdw = ctxt->hdw;
+       if (hdw->tuner_updated) ctxt->type_update_fl = !0;
+       return ctxt->type_update_fl != 0;
+}
+
+
+static void tuner_update(struct pvr2_tuner_handler *ctxt)
+{
+       if (ctxt->type_update_fl) set_type(ctxt);
+}
+
+
+static void pvr2_tuner_detach(struct pvr2_tuner_handler *ctxt)
+{
+       ctxt->client->handler = NULL;
+       kfree(ctxt);
+}
+
+
+static unsigned int pvr2_tuner_describe(struct pvr2_tuner_handler *ctxt,char *buf,unsigned int cnt)
+{
+       return scnprintf(buf,cnt,"handler: pvrusb2-tuner");
+}
+
+
+const static struct pvr2_i2c_handler_functions tuner_funcs = {
+       .detach = (void (*)(void *))pvr2_tuner_detach,
+       .check = (int (*)(void *))tuner_check,
+       .update = (void (*)(void *))tuner_update,
+       .describe = (unsigned int (*)(void *,char *,unsigned int))pvr2_tuner_describe,
+};
+
+
+int pvr2_i2c_tuner_setup(struct pvr2_hdw *hdw,struct pvr2_i2c_client *cp)
+{
+       struct pvr2_tuner_handler *ctxt;
+       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 = &tuner_funcs;
+       ctxt->type_update_fl = !0;
+       ctxt->client = cp;
+       ctxt->hdw = hdw;
+       cp->handler = &ctxt->i2c_handler;
+       pvr2_trace(PVR2_TRACE_CHIPS,"i2c 0x%x tuner 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: ***
+  */