[media] add a driver for mb86a20s

This adds the trivial bits to mb86a20s. As the driver won't touch
at the channel/layer parameters, this may not be enough for
receiving all channels, especially ISDB-Tsb, but the driver worked
properly for receiving video channels on my tests.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/Kconfig

@@ -512,6 +512,14 @@ config DVB_DIB8000
 	  A driver for DiBcom's DiB8000 ISDB-T/ISDB-Tsb demodulator.
 	  Say Y when you want to support this frontend.
 
+config DVB_MB86A20S
+	tristate "Fujitsu mb86a20s"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  A driver for Fujitsu mb86a20s ISDB-T/ISDB-Tsb demodulator.
+	  Say Y when you want to support this frontend.
+
 comment "Digital terrestrial only tuners/PLL"
 	depends on DVB_CORE
 

drivers/media/dvb/frontends/Makefile

@@ -81,4 +81,5 @@ obj-$(CONFIG_DVB_ISL6423) += isl6423.o
 obj-$(CONFIG_DVB_EC100) += ec100.o
 obj-$(CONFIG_DVB_DS3000) += ds3000.o
 obj-$(CONFIG_DVB_MB86A16) += mb86a16.o
+obj-$(CONFIG_DVB_MB86A20S) += mb86a20s.o
 obj-$(CONFIG_DVB_IX2505V) += ix2505v.o

drivers/media/dvb/frontends/mb86a20s.h

+/*
+ *   Fujitsu mb86a20s driver
+ *
+ *   Copyright (C) 2010 Mauro Carvalho Chehab <mchehab@redhat.com>
+ *
+ *   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 version 2.
+ *
+ *   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.
+ */
+
+#ifndef MB86A20S_H
+#define MB86A20S_H
+
+#include <linux/dvb/frontend.h>
+
+/**
+ * struct mb86a20s_config - Define the per-device attributes of the frontend
+ *
+ * @demod_address:	the demodulator's i2c address
+ */
+
+struct mb86a20s_config {
+	u8 demod_address;
+};
+
+#if defined(CONFIG_DVB_MB86A20S) || (defined(CONFIG_DVB_MB86A20S_MODULE) \
+	&& defined(MODULE))
+extern struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
+					   struct i2c_adapter *i2c);
+extern struct i2c_adapter *mb86a20s_get_tuner_i2c_adapter(struct dvb_frontend *);
+#else
+static inline struct dvb_frontend *mb86a20s_attach(
+	const struct mb86a20s_config *config, struct i2c_adapter *i2c)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+static struct i2c_adapter *
+	mb86a20s_get_tuner_i2c_adapter(struct dvb_frontend *fe)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif
+
+#endif /* MB86A20S */