V4L/DVB (4228a): pvrusb2 to kernel 2.6.18
Implement V4L2 driver for the Hauppauge PVR USB2 TV tuner.
The Hauppauge PVR USB2 is a USB connected TV tuner with an embedded
cx23416 hardware MPEG2 encoder. There are two major variants of this
device; this driver handles both. Any V4L2 application which
understands MPEG2 video stream data should be able to work with this
device.
Signed-off-by: Mike Isely <isely@pobox.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/video/pvrusb2/pvrusb2-tuner.c b/drivers/media/video/pvrusb2/pvrusb2-tuner.c
new file mode 100644
index 0000000..f4aba81
--- /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 = 0;
+ 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: ***
+ */