[media] DVB: add support for LG Electronics LGDT3306A ATSC/QAM-B Demodulator

This ATSC/QAM-B demodulator is used by several new devices.

Add support for it. Other patches will fix CodingStyle issues.

Signed-off-by: Fred Richter <frichter@hauppauge.com>
Signed-off-by: Michael Ira Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

1 files changed, 80 insertions, 0 deletions

diff --git a/drivers/media/dvb-frontends/lgdt3306a.h b/drivers/media/dvb-frontends/lgdt3306a.h
new file mode 100644
index 000000000000..47e48d485eac
--- /dev/null
+++ b/drivers/media/dvb-frontends/lgdt3306a.h
@@ -0,0 +1,80 @@
+/*
+ *    Support for LGDT3306A - 8VSB/QAM-B
+ *
+ *    Copyright (C) 2013,2014 Fred Richter <frichter@hauppauge.com>
+ *      based on lgdt3305.[ch] by Michael Krufky
+ *
+ *    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 _LGDT3306A_H_
+#define _LGDT3306A_H_
+
+#include <linux/i2c.h>
+#include "dvb_frontend.h"
+
+
+enum lgdt3306a_mpeg_mode {
+	LGDT3306A_MPEG_PARALLEL = 0,
+	LGDT3306A_MPEG_SERIAL = 1,
+};
+
+enum lgdt3306a_tp_clock_edge {
+	LGDT3306A_TPCLK_RISING_EDGE = 0,
+	LGDT3306A_TPCLK_FALLING_EDGE = 1,
+};
+
+enum lgdt3306a_tp_valid_polarity {
+	LGDT3306A_TP_VALID_LOW = 0,
+	LGDT3306A_TP_VALID_HIGH = 1,
+};
+
+struct lgdt3306a_config {
+	u8 i2c_addr;
+
+	/* user defined IF frequency in KHz */
+	u16 qam_if_khz;
+	u16 vsb_if_khz;
+
+	/* disable i2c repeater - 0:repeater enabled 1:repeater disabled */
+	int deny_i2c_rptr:1;
+
+	/* spectral inversion - 0:disabled 1:enabled */
+	int spectral_inversion:1;
+
+	enum lgdt3306a_mpeg_mode mpeg_mode;
+	enum lgdt3306a_tp_clock_edge tpclk_edge;
+	enum lgdt3306a_tp_valid_polarity tpvalid_polarity;
+
+	int  xtalMHz;//demod clock freq in MHz; 24 or 25 supported
+};
+
+#if defined(CONFIG_DVB_LGDT3306A) || (defined(CONFIG_DVB_LGDT3306A_MODULE) && \
+				     defined(MODULE))
+extern
+struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
+				     struct i2c_adapter *i2c_adap);
+#else
+static inline
+struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
+				     struct i2c_adapter *i2c_adap)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif /* CONFIG_DVB_LGDT3306A */
+
+#endif /* _LGDT3306A_H_ */