[media] Re-write the s921 frontend
On our tests with Leadership ISDBT, the s921 frontend were not work. As its
design contained some weird things, it ended to be easier to just re-write
it, getting another frontend as an example (cx24123).
As the old s921 driver weren't used, there's no regression. Some info from
the old frontend were used as a way to double check the behavior that were
noticed on the USB dumps retrieved from Leadership driver.
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/dvb/frontends/s921.h b/drivers/media/dvb/frontends/s921.h
new file mode 100644
index 0000000..f220d82
--- /dev/null
+++ b/drivers/media/dvb/frontends/s921.h
@@ -0,0 +1,47 @@
+/*
+ * Sharp s921 driver
+ *
+ * Copyright (C) 2009 Mauro Carvalho Chehab <mchehab@redhat.com>
+ * Copyright (C) 2009 Douglas Landgraf <dougsland@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 S921_H
+#define S921_H
+
+#include <linux/dvb/frontend.h>
+
+struct s921_config {
+ /* the demodulator's i2c address */
+ u8 demod_address;
+};
+
+#if defined(CONFIG_DVB_S921) || (defined(CONFIG_DVB_S921_MODULE) \
+ && defined(MODULE))
+extern struct dvb_frontend *s921_attach(const struct s921_config *config,
+ struct i2c_adapter *i2c);
+extern struct i2c_adapter *s921_get_tuner_i2c_adapter(struct dvb_frontend *);
+#else
+static inline struct dvb_frontend *s921_attach(
+ const struct s921_config *config, struct i2c_adapter *i2c)
+{
+ printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+ return NULL;
+}
+static struct i2c_adapter *
+ s921_get_tuner_i2c_adapter(struct dvb_frontend *fe)
+{
+ printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+ return NULL;
+}
+#endif
+
+#endif /* S921_H */