V4L/DVB (8971): initial driver for af9013 demodulator

- initial driver for the Afatech AF9013 demodulator
Signed-off-by: NAntti Palosaari <crope@iki.fi>
[mchehab.redhat.com: having a global var called 'debug' is not a good idea. rename it to af9013_debug]
Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/dvb/frontends/Kconfig

@@ -398,4 +398,10 @@ config DVB_DUMMY_FE
 	tristate "Dummy frontend driver"
 	default n
 
+config DVB_AF9013
+	tristate "Afatech AF9013 demodulator"
+	depends on DVB_CORE && I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  Say Y when you want to support this frontend.
 endmenu

drivers/media/dvb/frontends/Makefile

@@ -50,3 +50,4 @@ obj-$(CONFIG_DVB_TDA10048) += tda10048.o
 obj-$(CONFIG_DVB_S5H1411) += s5h1411.o
 obj-$(CONFIG_DVB_LGS8GL5) += lgs8gl5.o
 obj-$(CONFIG_DVB_DUMMY_FE) += dvb_dummy_fe.o
+obj-$(CONFIG_DVB_AF9013) += af9013.o

drivers/media/dvb/frontends/af9013.h

+/*
+ * DVB USB Linux driver for Afatech AF9015 DVB-T USB2.0 receiver
+ *
+ * Copyright (C) 2007 Antti Palosaari <crope@iki.fi>
+ *
+ * Thanks to Afatech who kindly provided information.
+ *
+ *    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 _AF9013_H_
+#define _AF9013_H_
+
+#include <linux/dvb/frontend.h>
+
+enum af9013_ts_mode {
+	AF9013_OUTPUT_MODE_PARALLEL,
+	AF9013_OUTPUT_MODE_SERIAL,
+	AF9013_OUTPUT_MODE_USB, /* only for AF9015 */
+};
+
+enum af9013_tuner {
+	AF9013_TUNER_MXL5003D   =   3, /* MaxLinear */
+	AF9013_TUNER_MXL5005D   =  13, /* MaxLinear */
+	AF9013_TUNER_MXL5005R   =  30, /* MaxLinear */
+	AF9013_TUNER_ENV77H11D5 = 129, /* Panasonic */
+	AF9013_TUNER_MT2060     = 130, /* Microtune */
+	AF9013_TUNER_MC44S803   = 133, /* Freescale */
+	AF9013_TUNER_QT1010     = 134, /* Quantek */
+	AF9013_TUNER_UNKNOWN    = 140, /* for can tuners ? */
+	AF9013_TUNER_MT2060_2   = 147, /* Microtune */
+	AF9013_TUNER_TDA18271   = 156, /* NXP */
+	AF9013_TUNER_QT1010A    = 162, /* Quantek */
+};
+
+/* AF9013/5 GPIOs (mostly guessed)
+   demod#1-gpio#0 - set demod#2 i2c-addr for dual devices
+   demod#1-gpio#1 - xtal setting (?)
+   demod#1-gpio#3 - tuner#1
+   demod#2-gpio#0 - tuner#2
+   demod#2-gpio#1 - xtal setting (?)
+*/
+#define AF9013_GPIO_ON (1 << 0)
+#define AF9013_GPIO_EN (1 << 1)
+#define AF9013_GPIO_O  (1 << 2)
+#define AF9013_GPIO_I  (1 << 3)
+
+#define AF9013_GPIO_LO (AF9013_GPIO_ON|AF9013_GPIO_EN)
+#define AF9013_GPIO_HI (AF9013_GPIO_ON|AF9013_GPIO_EN|AF9013_GPIO_O)
+
+#define AF9013_GPIO_TUNER_ON  (AF9013_GPIO_ON|AF9013_GPIO_EN)
+#define AF9013_GPIO_TUNER_OFF (AF9013_GPIO_ON|AF9013_GPIO_EN|AF9013_GPIO_O)
+
+struct af9013_config {
+	/* demodulator's I2C address */
+	u8 demod_address;
+
+	/* frequencies in kHz */
+	u32 adc_clock;
+
+	/* tuner ID */
+	u8 tuner;
+
+	/* tuner IF */
+	u16 tuner_if;
+
+	/* TS data output mode */
+	u8 output_mode:2;
+
+	/* RF spectrum inversion */
+	u8 rf_spec_inv:1;
+
+	/* API version */
+	u8 api_version[4];
+
+	/* GPIOs */
+	u8 gpio[4];
+};
+
+
+#if defined(CONFIG_DVB_AF9013) || \
+	(defined(CONFIG_DVB_AF9013_MODULE) && defined(MODULE))
+extern struct dvb_frontend *af9013_attach(const struct af9013_config *config,
+	struct i2c_adapter *i2c);
+#else
+static inline struct dvb_frontend *af9013_attach(
+const struct af9013_config *config, struct i2c_adapter *i2c)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif /* CONFIG_DVB_AF9013 */
+
+#endif /* _AF9013_H_ */