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-rw-r--r--kernel/drivers/media/dvb-frontends/si2165.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/kernel/drivers/media/dvb-frontends/si2165.h b/kernel/drivers/media/dvb-frontends/si2165.h
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+++ b/kernel/drivers/media/dvb-frontends/si2165.h
@@ -0,0 +1,62 @@
+/*
+ Driver for Silicon Labs SI2165 DVB-C/-T Demodulator
+
+ Copyright (C) 2013-2014 Matthias Schwarzott <zzam@gentoo.org>
+
+ 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.
+
+ References:
+ http://www.silabs.com/Support%20Documents/TechnicalDocs/Si2165-short.pdf
+*/
+
+#ifndef _DVB_SI2165_H
+#define _DVB_SI2165_H
+
+#include <linux/dvb/frontend.h>
+
+enum {
+ SI2165_MODE_OFF = 0x00,
+ SI2165_MODE_PLL_EXT = 0x20,
+ SI2165_MODE_PLL_XTAL = 0x21
+};
+
+struct si2165_config {
+ /* i2c addr
+ * possible values: 0x64,0x65,0x66,0x67 */
+ u8 i2c_addr;
+
+ /* external clock or XTAL */
+ u8 chip_mode;
+
+ /* frequency of external clock or xtal in Hz
+ * possible values: 4000000, 16000000, 20000000, 240000000, 27000000
+ */
+ u32 ref_freq_Hz;
+
+ /* invert the spectrum */
+ bool inversion;
+};
+
+#if IS_REACHABLE(CONFIG_DVB_SI2165)
+struct dvb_frontend *si2165_attach(
+ const struct si2165_config *config,
+ struct i2c_adapter *i2c);
+#else
+static inline struct dvb_frontend *si2165_attach(
+ const struct si2165_config *config,
+ struct i2c_adapter *i2c)
+{
+ pr_warn("%s: driver disabled by Kconfig\n", __func__);
+ return NULL;
+}
+#endif /* CONFIG_DVB_SI2165 */
+
+#endif /* _DVB_SI2165_H */