V4L/DVB (4606): Add driver for TUA6100

This driver was originally in budget-av.c, however I have extracted it into
a seperate file to permit reuse.
I also reworked the code to make it maintainable. I then examined the KNC1
windows drivers and rewrote the code in order to configure the PLL as they
do. This solves a lot of reported tuning problems.

Signed-off-by: Andrew de Quincey <adq_dvb@lidskialf.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/drivers/media/dvb/frontends/tua6100.h b/drivers/media/dvb/frontends/tua6100.h
new file mode 100644
index 000000000000..2e5d8fb8d9ba
--- /dev/null
+++ b/drivers/media/dvb/frontends/tua6100.h
@@ -0,0 +1,47 @@
+/**
+ * Driver for Infineon tua6100 PLL.
+ *
+ * (c) 2006 Andrew de Quincey
+ *
+ * Based on code found in budget-av.c, which has the following:
+ * Compiled from various sources by Michael Hunold <michael@mihu.de>
+ *
+ * CI interface support (c) 2004 Olivier Gournet <ogournet@anevia.com> &
+ *                               Andrew de Quincey <adq_dvb@lidskialf.net>
+ *
+ * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
+ *
+ * Copyright (C) 1999-2002 Ralph  Metzler
+ *                       & Marcus Metzler for convergence integrated media GmbH
+ * 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, or
+ * (at your option) any later version.
+ *
+ * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef __DVB_TUA6100_H__
+#define __DVB_TUA6100_H__
+
+#include <linux/i2c.h>
+#include "dvb_frontend.h"
+
+/**
+ * Attach a tua6100 pll to the supplied frontend structure.
+ *
+ * @param fe Frontend to attach to.
+ * @param addr i2c address of the pll.
+ * @param i2c i2c adapter to use.
+ * @return FE pointer on success, NULL on failure.
+ */
+extern struct dvb_frontend *tua6100_attach(struct dvb_frontend *fe, int addr, struct i2c_adapter *i2c);
+
+#endif