[media] si2168: Silicon Labs Si2168 DVB-T/T2/C demod driver

Silicon Labs Si2168 DVB-T/T2/C demod driver.
That driver version supports only DVB-T.
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

drivers/media/dvb-frontends/Kconfig

@@ -446,6 +446,13 @@ config DVB_RTL2832
 	help
 	  Say Y when you want to support this frontend.
 
+config DVB_SI2168
+	tristate "Silicon Labs Si2168"
+	depends on DVB_CORE && I2C && I2C_MUX
+	default m if !MEDIA_SUBDRV_AUTOSELECT
+	help
+	  Say Y when you want to support this frontend.
+
 comment "DVB-C (cable) frontends"
 	depends on DVB_CORE
 

drivers/media/dvb-frontends/Makefile

@@ -78,6 +78,7 @@ obj-$(CONFIG_DVB_AF9013) += af9013.o
 obj-$(CONFIG_DVB_CX24116) += cx24116.o
 obj-$(CONFIG_DVB_CX24117) += cx24117.o
 obj-$(CONFIG_DVB_SI21XX) += si21xx.o
+obj-$(CONFIG_DVB_SI2168) += si2168.o
 obj-$(CONFIG_DVB_STV0288) += stv0288.o
 obj-$(CONFIG_DVB_STB6000) += stb6000.o
 obj-$(CONFIG_DVB_S921) += s921.o

drivers/media/dvb-frontends/si2168.h

+#ifndef SI2168_H
+#define SI2168_H
+
+#include <linux/dvb/frontend.h>
+/*
+ * I2C address
+ * 0x64
+ */
+struct si2168_config {
+	/*
+	 * frontend
+	 * returned by driver
+	 */
+	struct dvb_frontend **fe;
+
+	/*
+	 * tuner I2C adapter
+	 * returned by driver
+	 */
+	struct i2c_adapter **i2c_adapter;
+};
+
+#endif

drivers/media/dvb-frontends/si2168_priv.h

+#ifndef SI2168_PRIV_H
+#define SI2168_PRIV_H
+
+#include "si2168.h"
+#include "dvb_frontend.h"
+#include <linux/firmware.h>
+#include <linux/i2c-mux.h>
+
+#define SI2168_FIRMWARE "dvb-demod-si2168-01.fw"
+
+/* state struct */
+struct si2168 {
+	struct i2c_client *client;
+	struct i2c_adapter *adapter;
+	struct mutex i2c_mutex;
+	struct dvb_frontend fe;
+	fe_delivery_system_t delivery_system;
+	fe_status_t fe_status;
+	bool active;
+};
+
+/* firmare command struct */
+#define SI2157_ARGLEN      30
+struct si2168_cmd {
+	u8 args[SI2157_ARGLEN];
+	unsigned wlen;
+	unsigned rlen;
+};
+
+#endif