V4L/DVB (5914): Add initial support for Dual-DVB-T stick

Add initial support for Dual-DVB-T stick based on DiB7700 and MT2266

- Microtune MT2266 driver.
- Preliminary support for these dual tuner devices :
  - Pinnacle Dual DVB-T diversity
  - Terratec Cinergy DT USB XS diversity
  - Hauppauge Nova TD USB

Signed-off-by: Olivier DANET <odanet@caramail.com>
Signed-off-by: Patrick Boettcher <pb@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

11 files changed, 609 insertions, 5 deletions

diff --git a/drivers/media/dvb/dvb-usb/Kconfig b/drivers/media/dvb/dvb-usb/Kconfig
index 40e41f2f5afe..dec03ee32e1a 100644
--- a/drivers/media/dvb/dvb-usb/Kconfig
+++ b/drivers/media/dvb/dvb-usb/Kconfig
@@ -74,6 +74,7 @@ config DVB_USB_DIB0700
 	select DVB_DIB7000M
 	select DVB_DIB3000MC
 	select DVB_TUNER_MT2060 if !DVB_FE_CUSTOMISE
+	select DVB_TUNER_MT2266 if !DVB_FE_CUSTOMISE
 	help
 	  Support for USB2.0/1.1 DVB receivers based on the DiB0700 USB bridge. The
 	  USB bridge is also present in devices having the DiB7700 DVB-T-USB
diff --git a/drivers/media/dvb/dvb-usb/dib0700.h b/drivers/media/dvb/dvb-usb/dib0700.h
index cda3adea24fb..74ae6c24087e 100644
--- a/drivers/media/dvb/dvb-usb/dib0700.h
+++ b/drivers/media/dvb/dvb-usb/dib0700.h
@@ -35,12 +35,13 @@ extern int dvb_usb_dib0700_debug;
 struct dib0700_state {
 	u8 channel_state;
 	u16 mt2060_if1[2];
-
+	u8 rc_toggle;
 	u8 is_dib7000pc;
 };
 
 extern int dib0700_set_gpio(struct dvb_usb_device *, enum dib07x0_gpios gpio, u8 gpio_dir, u8 gpio_val);
 extern int dib0700_ctrl_clock(struct dvb_usb_device *d, u32 clk_MHz, u8 clock_out_gp3);
+extern int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen);
 extern int dib0700_download_firmware(struct usb_device *udev, const struct firmware *fw);
 extern int dib0700_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff);
 extern struct i2c_algorithm dib0700_i2c_algo;
@@ -50,5 +51,4 @@ extern int dib0700_identify_state(struct usb_device *udev, struct dvb_usb_device
 extern int dib0700_device_count;
 extern struct dvb_usb_device_properties dib0700_devices[];
 extern struct usb_device_id dib0700_usb_id_table[];
-
 #endif
diff --git a/drivers/media/dvb/dvb-usb/dib0700_core.c b/drivers/media/dvb/dvb-usb/dib0700_core.c
index dddf164f269a..8a1ea114deb0 100644
--- a/drivers/media/dvb/dvb-usb/dib0700_core.c
+++ b/drivers/media/dvb/dvb-usb/dib0700_core.c
@@ -32,7 +32,7 @@ static int dib0700_ctrl_wr(struct dvb_usb_device *d, u8 *tx, u8 txlen)
 }
 
 /* expecting tx buffer: request data[0] ... data[n] (n <= 4) */
-static int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
+int dib0700_ctrl_rd(struct dvb_usb_device *d, u8 *tx, u8 txlen, u8 *rx, u8 rxlen)
 {
 	u16 index, value;
 	int status;
diff --git a/drivers/media/dvb/dvb-usb/dib0700_devices.c b/drivers/media/dvb/dvb-usb/dib0700_devices.c
index 2208757d9017..122d9d4b4baa 100644
--- a/drivers/media/dvb/dvb-usb/dib0700_devices.c
+++ b/drivers/media/dvb/dvb-usb/dib0700_devices.c
@@ -12,6 +12,7 @@
 #include "dib7000m.h"
 #include "dib7000p.h"
 #include "mt2060.h"
+#include "mt2266.h"
 
 static int force_lna_activation;
 module_param(force_lna_activation, int, 0644);
@@ -96,6 +97,228 @@ static int bristol_tuner_attach(struct dvb_usb_adapter *adap)
 		st->mt2060_if1[adap->id]) == NULL ? -ENODEV : 0;
 }
 
+/* STK7700D: Pinnacle Dual DVB-T Diversity */
+
+static struct dibx000_agc_config stk7700d_7000p_mt2266_agc_config = {
+	BAND_UHF/* | BAND_VHF*/,
+	0xE64, // setup
+	2372, // inv_gain
+	21,  // time_stabiliz
+
+	0,   // alpha_level
+	118, // thlock
+
+	0,    // wbd_inv
+	0,    // wbd_ref
+	0,    // wbd_sel
+	0,    // wbd_alpha
+
+	65535, // agc1_max
+	0,     // agc1_min
+	65535, // agc2_max
+	23592, // agc2_min
+	0,     // agc1_pt1
+	128,   // agc1_pt2
+	128,   // agc1_pt3
+	128,   // agc1_slope1
+	0,     // agc1_slope2
+	128,   // agc2_pt1
+	253,   // agc2_pt2
+	81,    // agc2_slope1
+	 0,    // agc2_slope2
+
+	17, // alpha_mant
+	27, // alpha_exp
+
+	23, // beta_mant
+	51, // beta_exp
+
+	0, // perform_agc_softsplit : 1 en vrai!
+};
+
+static struct dibx000_bandwidth_config stk7700d_mt2266_pll_config = {
+	60000, 30000, // internal, sampling
+	1, 8, 3, 1, 0, // pll_cfg: prediv, ratio, range, reset, bypass
+	0, 0, 1, 1, 2, // misc: refdiv, bypclk_div, IO_CLK_en_core, ADClkSrc, modulo
+	(3 << 14) | (1 << 12) | (524 << 0), // sad_cfg: refsel, sel, freq_15k
+	0, // ifreq
+	20452225, // timf
+};
+
+static struct dib7000p_config stk7700d_dib7000p_mt2266_config[] = {
+	{	.output_mpeg2_in_188_bytes = 1,
+		.hostbus_diversity = 1,
+		.tuner_is_baseband = 1,
+
+		.agc = &stk7700d_7000p_mt2266_agc_config,
+		.bw  = &stk7700d_mt2266_pll_config,
+
+		.gpio_dir = DIB7000M_GPIO_DEFAULT_DIRECTIONS,
+		.gpio_val = DIB7000M_GPIO_DEFAULT_VALUES,
+		.gpio_pwm_pos = DIB7000M_GPIO_DEFAULT_PWM_POS,
+	},
+	{	.output_mpeg2_in_188_bytes = 1,
+		.hostbus_diversity = 1,
+		.tuner_is_baseband = 1,
+
+		.agc = &stk7700d_7000p_mt2266_agc_config,
+		.bw  = &stk7700d_mt2266_pll_config,
+
+		.gpio_dir = DIB7000M_GPIO_DEFAULT_DIRECTIONS,
+		.gpio_val = DIB7000M_GPIO_DEFAULT_VALUES,
+		.gpio_pwm_pos = DIB7000M_GPIO_DEFAULT_PWM_POS,
+	}
+};
+
+static struct mt2266_config stk7700d_mt2266_config[2] = {
+	{	.i2c_address = 0x60
+	},
+	{	.i2c_address = 0x60
+	}
+};
+
+static int stk7700d_frontend_attach(struct dvb_usb_adapter *adap)
+{
+	if (adap->id == 0) {
+		dib0700_set_gpio(adap->dev, GPIO6, GPIO_OUT, 1);
+		msleep(10);
+		dib0700_set_gpio(adap->dev, GPIO9, GPIO_OUT, 1);
+		dib0700_set_gpio(adap->dev, GPIO4, GPIO_OUT, 1);
+		dib0700_set_gpio(adap->dev, GPIO7, GPIO_OUT, 1);
+		dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 0);
+		msleep(10);
+		dib0700_set_gpio(adap->dev, GPIO10, GPIO_OUT, 1);
+		msleep(10);
+		dib0700_set_gpio(adap->dev, GPIO0, GPIO_OUT, 1);
+		dib7000p_i2c_enumeration(&adap->dev->i2c_adap,2,18,stk7700d_dib7000p_mt2266_config);
+	}
+
+	adap->fe = dvb_attach(dib7000p_attach, &adap->dev->i2c_adap,0x80+(adap->id << 1),
+				&stk7700d_dib7000p_mt2266_config[adap->id]);
+
+	return adap->fe == NULL ? -ENODEV : 0;
+}
+
+static int stk7700d_tuner_attach(struct dvb_usb_adapter *adap)
+{
+	struct i2c_adapter *tun_i2c;
+	tun_i2c = dib7000p_get_i2c_master(adap->fe, DIBX000_I2C_INTERFACE_TUNER, 1);
+	return dvb_attach(mt2266_attach, adap->fe, tun_i2c,
+		&stk7700d_mt2266_config[adap->id]) == NULL ? -ENODEV : 0;;
+}
+
+#define DEFAULT_RC_INTERVAL 150
+
+static u8 rc_request[] = { REQUEST_POLL_RC, 0 };
+
+int stk7700d_rc_query(struct dvb_usb_device *d, u32 *event, int *state)
+{
+	u8 key[4];
+	int i;
+	struct dvb_usb_rc_key *keymap = d->props.rc_key_map;
+	struct dib0700_state *st = d->priv;
+	*event = 0;
+	*state = REMOTE_NO_KEY_PRESSED;
+	i=dib0700_ctrl_rd(d,rc_request,2,key,4);
+	if (i<=0) {
+		err("stk7700d:RC Query Failed\n");
+		return 0;
+	}
+	if (key[0]==0 && key[1]==0 && key[2]==0 && key[3]==0) return 0;
+	if (key[1]!=st->rc_toggle) {
+		for (i=0;i<d->props.rc_key_map_size; i++) {
+			if (keymap[i].custom == key[2] && keymap[i].data == key[3]) {
+				*event = keymap[i].event;
+				*state = REMOTE_KEY_PRESSED;
+				st->rc_toggle=key[1];
+				return 0;
+			}
+		}
+		err("stk7700d:Unknown remote controller key : %2X %2X\n",(int)key[2],(int)key[3]);
+	}
+	return 0;
+}
+
+#define KEY_MAP_SIZE (25+48)
+
+struct dvb_usb_rc_key stk7700d_rc_keys[] = {
+	/* Key codes for the tiny Pinnacle remote*/
+	{ 0x07, 0x00, KEY_MUTE },
+	{ 0x07, 0x01, KEY_MENU }, // Pinnacle logo
+	{ 0x07, 0x39, KEY_POWER },
+	{ 0x07, 0x03, KEY_VOLUMEUP },
+	{ 0x07, 0x09, KEY_VOLUMEDOWN },
+	{ 0x07, 0x06, KEY_CHANNELUP },
+	{ 0x07, 0x0c, KEY_CHANNELDOWN },
+	{ 0x07, 0x0f, KEY_1 },
+	{ 0x07, 0x15, KEY_2 },
+	{ 0x07, 0x10, KEY_3 },
+	{ 0x07, 0x18, KEY_4 },
+	{ 0x07, 0x1b, KEY_5 },
+	{ 0x07, 0x1e, KEY_6 },
+	{ 0x07, 0x11, KEY_7 },
+	{ 0x07, 0x21, KEY_8 },
+	{ 0x07, 0x12, KEY_9 },
+	{ 0x07, 0x27, KEY_0 },
+	{ 0x07, 0x24, KEY_SCREEN }, // 'Square' key
+	{ 0x07, 0x2a, KEY_TEXT },   // 'T' key
+	{ 0x07, 0x2d, KEY_REWIND },
+	{ 0x07, 0x30, KEY_PLAY },
+	{ 0x07, 0x33, KEY_FASTFORWARD },
+	{ 0x07, 0x36, KEY_RECORD },
+	{ 0x07, 0x3c, KEY_STOP },
+	{ 0x07, 0x3f, KEY_CANCEL }, // '?' key
+	/* Key codes for the Terratec Cinergy DT XS Diversity, similar to cinergyT2.c */
+	{ 0xeb, 0x01, KEY_POWER },
+	{ 0xeb, 0x02, KEY_1 },
+	{ 0xeb, 0x03, KEY_2 },
+	{ 0xeb, 0x04, KEY_3 },
+	{ 0xeb, 0x05, KEY_4 },
+	{ 0xeb, 0x06, KEY_5 },
+	{ 0xeb, 0x07, KEY_6 },
+	{ 0xeb, 0x08, KEY_7 },
+	{ 0xeb, 0x09, KEY_8 },
+	{ 0xeb, 0x0a, KEY_9 },
+	{ 0xeb, 0x0b, KEY_VIDEO },
+	{ 0xeb, 0x0c, KEY_0 },
+	{ 0xeb, 0x0d, KEY_REFRESH },
+	{ 0xeb, 0x0f, KEY_EPG },
+	{ 0xeb, 0x10, KEY_UP },
+	{ 0xeb, 0x11, KEY_LEFT },
+	{ 0xeb, 0x12, KEY_OK },
+	{ 0xeb, 0x13, KEY_RIGHT },
+	{ 0xeb, 0x14, KEY_DOWN },
+	{ 0xeb, 0x16, KEY_INFO },
+	{ 0xeb, 0x17, KEY_RED },
+	{ 0xeb, 0x18, KEY_GREEN },
+	{ 0xeb, 0x19, KEY_YELLOW },
+	{ 0xeb, 0x1a, KEY_BLUE },
+	{ 0xeb, 0x1b, KEY_CHANNELUP },
+	{ 0xeb, 0x1c, KEY_VOLUMEUP },
+	{ 0xeb, 0x1d, KEY_MUTE  },
+	{ 0xeb, 0x1e, KEY_VOLUMEDOWN },
+	{ 0xeb, 0x1f, KEY_CHANNELDOWN },
+	{ 0xeb, 0x40, KEY_PAUSE },
+	{ 0xeb, 0x41, KEY_HOME },
+	{ 0xeb, 0x42, KEY_MENU }, /* DVD Menu */
+	{ 0xeb, 0x43, KEY_SUBTITLE },
+	{ 0xeb, 0x44, KEY_TEXT }, /* Teletext */
+	{ 0xeb, 0x45, KEY_DELETE },
+	{ 0xeb, 0x46, KEY_TV },
+	{ 0xeb, 0x47, KEY_DVD },
+	{ 0xeb, 0x48, KEY_STOP },
+	{ 0xeb, 0x49, KEY_VIDEO },
+	{ 0xeb, 0x4a, KEY_AUDIO }, /* Music */
+	{ 0xeb, 0x4b, KEY_SCREEN }, /* Pic */
+	{ 0xeb, 0x4c, KEY_PLAY },
+	{ 0xeb, 0x4d, KEY_BACK },
+	{ 0xeb, 0x4e, KEY_REWIND },
+	{ 0xeb, 0x4f, KEY_FASTFORWARD },
+	{ 0xeb, 0x54, KEY_PREVIOUS },
+	{ 0xeb, 0x58, KEY_RECORD },
+	{ 0xeb, 0x5c, KEY_NEXT }
+	};
+
 /* STK7700P: Hauppauge Nova-T Stick, AVerMedia Volar */
 static struct dibx000_agc_config stk7700p_7000m_mt2060_agc_config = {
 	BAND_UHF | BAND_VHF,       // band_caps
@@ -280,6 +503,9 @@ struct usb_device_id dib0700_usb_id_table[] = {
 		{ USB_DEVICE(USB_VID_LEADTEK,   USB_PID_WINFAST_DTV_DONGLE_STK7700P) },
 		{ USB_DEVICE(USB_VID_HAUPPAUGE, USB_PID_HAUPPAUGE_NOVA_T_STICK_2) },
 		{ USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_VOLAR_2) },
+		{ USB_DEVICE(USB_VID_PINNACLE,  USB_PID_PINNACLE_PCTV2000E) },
+		{ USB_DEVICE(USB_VID_TERRATEC,  USB_PID_TERRATEC_CINERGY_DT_XS_DIVERSITY) },
+		{ USB_DEVICE(USB_VID_HAUPPAUGE, USB_PID_HAUPPAUGE_NOVA_TD_STICK) },
 		{ }		/* Terminating entry */
 };
 MODULE_DEVICE_TABLE(usb, dib0700_usb_id_table);
@@ -372,6 +598,42 @@ struct dvb_usb_device_properties dib0700_devices[] = {
 				{ NULL },
 			},
 		}
+	}, { DIB0700_DEFAULT_DEVICE_PROPERTIES,
+
+		.num_adapters = 2,
+		.adapter = {
+			{
+				.frontend_attach  = stk7700d_frontend_attach,
+				.tuner_attach     = stk7700d_tuner_attach,
+
+				DIB0700_DEFAULT_STREAMING_CONFIG(0x02),
+			}, {
+				.frontend_attach  = stk7700d_frontend_attach,
+				.tuner_attach     = stk7700d_tuner_attach,
+
+				DIB0700_DEFAULT_STREAMING_CONFIG(0x03),
+			}
+		},
+
+		.num_device_descs = 3,
+		.devices = {
+			{   "Pinnacle PCTV 2000e",
+				{ &dib0700_usb_id_table[11], NULL },
+				{ NULL },
+			},
+			{   "Terratec Cinergy DT XS Diversity",
+				{ &dib0700_usb_id_table[12], NULL },
+				{ NULL },
+			},
+			{   "Haupauge Nova-TD Stick",
+				{ &dib0700_usb_id_table[13], NULL },
+				{ NULL },
+			},
+		},
+		.rc_interval      = DEFAULT_RC_INTERVAL,
+		.rc_key_map       = stk7700d_rc_keys,
+		.rc_key_map_size  = KEY_MAP_SIZE,
+		.rc_query         = stk7700d_rc_query
 	}
 };
 
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-ids.h b/drivers/media/dvb/dvb-usb/dvb-usb-ids.h
index 78ea3b566ffc..2e38be3aa45b 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-ids.h
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-ids.h
@@ -12,7 +12,7 @@
 /* Vendor IDs */
 #define USB_VID_ADSTECH				0x06e1
 #define USB_VID_AFATECH				0x15a4
-#define USB_VID_ALCOR_MICRO		0x058f
+#define USB_VID_ALCOR_MICRO			0x058f
 #define USB_VID_ALINK				0x05e3
 #define USB_VID_ANCHOR				0x0547
 #define USB_VID_ANUBIS_ELECTRONIC		0x10fd
@@ -116,8 +116,11 @@
 #define USB_PID_HAUPPAUGE_NOVA_T_500_2			0x9950
 #define USB_PID_HAUPPAUGE_NOVA_T_STICK			0x7050
 #define USB_PID_HAUPPAUGE_NOVA_T_STICK_2		0x7060
+#define USB_PID_HAUPPAUGE_NOVA_TD_STICK			0x9580
 #define USB_PID_AVERMEDIA_VOLAR				0xa807
 #define USB_PID_AVERMEDIA_VOLAR_2			0xb808
+#define USB_PID_TERRATEC_CINERGY_DT_XS_DIVERSITY	0x005a
+#define USB_PID_PINNACLE_PCTV2000E			0x022c
 #define USB_PID_NEBULA_DIGITV				0x0201
 #define USB_PID_DVICO_BLUEBIRD_LGDT			0xd820
 #define USB_PID_DVICO_BLUEBIRD_LG064F_COLD		0xd500
diff --git a/drivers/media/dvb/frontends/Kconfig b/drivers/media/dvb/frontends/Kconfig
index ff448761dcef..ba70ad0c3f05 100644
--- a/drivers/media/dvb/frontends/Kconfig
+++ b/drivers/media/dvb/frontends/Kconfig
@@ -322,6 +322,13 @@ config DVB_TUNER_MT2060
 	help
 	  A driver for the silicon IF tuner MT2060 from Microtune.
 
+config DVB_TUNER_MT2266
+	tristate "Microtune MT2266 silicon tuner"
+	depends on I2C
+	default m if DVB_FE_CUSTOMISE
+	help
+	  A driver for the silicon baseband tuner MT2266 from Microtune.
+
 comment "Miscellaneous devices"
 	depends on DVB_CORE
 
diff --git a/drivers/media/dvb/frontends/Makefile b/drivers/media/dvb/frontends/Makefile
index 156b062e02c4..217265ca2849 100644
--- a/drivers/media/dvb/frontends/Makefile
+++ b/drivers/media/dvb/frontends/Makefile
@@ -40,5 +40,6 @@ obj-$(CONFIG_DVB_TDA10086) += tda10086.o
 obj-$(CONFIG_DVB_TDA826X) += tda826x.o
 obj-$(CONFIG_DVB_TDA827X) += tda827x.o
 obj-$(CONFIG_DVB_TUNER_MT2060) += mt2060.o
+obj-$(CONFIG_DVB_TUNER_MT2266) += mt2266.o
 obj-$(CONFIG_DVB_TUNER_QT1010) += qt1010.o
 obj-$(CONFIG_DVB_TUA6100) += tua6100.o
diff --git a/drivers/media/dvb/frontends/dib7000p.c b/drivers/media/dvb/frontends/dib7000p.c
index aece458cfe12..c24189fcbc89 100644
--- a/drivers/media/dvb/frontends/dib7000p.c
+++ b/drivers/media/dvb/frontends/dib7000p.c
@@ -112,6 +112,11 @@ static int dib7000p_set_output_mode(struct dib7000p_state *state, int mode)
 			break;
 	}
 
+	if (state->cfg.hostbus_diversity) {
+		ret |= dib7000p_write_word(state,  204, 1); // Diversity ?
+		ret |= dib7000p_write_word(state,  205, 0); // Diversity ?
+	}
+
 	if (state->cfg.output_mpeg2_in_188_bytes)
 		smo_mode |= (1 << 5) ;
 
diff --git a/drivers/media/dvb/frontends/dib7000p.h b/drivers/media/dvb/frontends/dib7000p.h
index 79465cf1aced..94829c1ed054 100644
--- a/drivers/media/dvb/frontends/dib7000p.h
+++ b/drivers/media/dvb/frontends/dib7000p.h
@@ -35,7 +35,7 @@ struct dib7000p_config {
 extern struct dvb_frontend * dib7000p_attach(struct i2c_adapter *i2c_adap, u8 i2c_addr, struct dib7000p_config *cfg);
 extern struct i2c_adapter * dib7000p_get_i2c_master(struct dvb_frontend *, enum dibx000_i2c_interface, int);
 extern int dib7000pc_detection(struct i2c_adapter *i2c_adap);
-
+extern int dib7000p_i2c_enumeration(struct i2c_adapter *i2c, int no_of_demods, u8 default_addr, struct dib7000p_config cfg[]);
 /* TODO
 extern INT dib7000p_set_gpio(struct dibDemod *demod, UCHAR num, UCHAR dir, UCHAR val);
 extern INT dib7000p_enable_vbg_voltage(struct dibDemod *demod);
diff --git a/drivers/media/dvb/frontends/mt2266.c b/drivers/media/dvb/frontends/mt2266.c
new file mode 100644
index 000000000000..145135778bce
--- /dev/null
+++ b/drivers/media/dvb/frontends/mt2266.c
@@ -0,0 +1,288 @@
+/*
+ *  Driver for Microtune MT2266 "Direct conversion low power broadband tuner"
+ *
+ *  Copyright (c) 2007 Olivier DANET <odanet@caramail.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; 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.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/delay.h>
+#include <linux/dvb/frontend.h>
+#include <linux/i2c.h>
+
+#include "dvb_frontend.h"
+#include "mt2266.h"
+
+#define I2C_ADDRESS 0x60
+
+#define REG_PART_REV   0
+#define REG_TUNE       1
+#define REG_BAND       6
+#define REG_BANDWIDTH  8
+#define REG_LOCK       0x12
+
+#define PART_REV 0x85
+
+struct mt2266_priv {
+	struct mt2266_config *cfg;
+	struct i2c_adapter   *i2c;
+
+	u32 frequency;
+	u32 bandwidth;
+};
+
+/* Here, frequencies are expressed in kiloHertz to avoid 32 bits overflows */
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
+
+#define dprintk(args...) do { if (debug) {printk(KERN_DEBUG "MT2266: " args); printk("\n"); }} while (0)
+
+// Reads a single register
+static int mt2266_readreg(struct mt2266_priv *priv, u8 reg, u8 *val)
+{
+	struct i2c_msg msg[2] = {
+		{ .addr = priv->cfg->i2c_address, .flags = 0,        .buf = &reg, .len = 1 },
+		{ .addr = priv->cfg->i2c_address, .flags = I2C_M_RD, .buf = val,  .len = 1 },
+	};
+	if (i2c_transfer(priv->i2c, msg, 2) != 2) {
+		printk(KERN_WARNING "MT2266 I2C read failed\n");
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+// Writes a single register
+static int mt2266_writereg(struct mt2266_priv *priv, u8 reg, u8 val)
+{
+	u8 buf[2] = { reg, val };
+	struct i2c_msg msg = {
+		.addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = 2
+	};
+	if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
+		printk(KERN_WARNING "MT2266 I2C write failed\n");
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+// Writes a set of consecutive registers
+static int mt2266_writeregs(struct mt2266_priv *priv,u8 *buf, u8 len)
+{
+	struct i2c_msg msg = {
+		.addr = priv->cfg->i2c_address, .flags = 0, .buf = buf, .len = len
+	};
+	if (i2c_transfer(priv->i2c, &msg, 1) != 1) {
+		printk(KERN_WARNING "MT2266 I2C write failed (len=%i)\n",(int)len);
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+// Initialisation sequences
+static u8 mt2266_init1[] = {
+	REG_TUNE,
+	0x00, 0x00, 0x28, 0x00, 0x52, 0x99, 0x3f };
+
+static u8 mt2266_init2[] = {
+	0x17,                                     0x6d, 0x71, 0x61, 0xc0, 0xbf, 0xff, 0xdc, 0x00, 0x0a,
+	0xd4, 0x03, 0x64, 0x64, 0x64, 0x64, 0x22, 0xaa, 0xf2, 0x1e, 0x80, 0x14, 0x01, 0x01, 0x01, 0x01,
+	0x01, 0x01, 0x7f, 0x5e, 0x3f, 0xff, 0xff, 0xff, 0x00, 0x77, 0x0f, 0x2d };
+
+static u8 mt2266_init_8mhz[] = {
+	REG_BANDWIDTH,
+	0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22, 0x22 };
+
+static u8 mt2266_init_7mhz[] = {
+	REG_BANDWIDTH,
+	0x32, 0x32, 0x32, 0x32, 0x32, 0x32, 0x32, 0x32 };
+
+static u8 mt2266_init_6mhz[] = {
+	REG_BANDWIDTH,
+	0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7, 0xa7 };
+
+#define FREF 30000       // Quartz oscillator 30 MHz
+
+static int mt2266_set_params(struct dvb_frontend *fe, struct dvb_frontend_parameters *params)
+{
+	struct mt2266_priv *priv;
+	int ret=0;
+	u32 freq;
+	u32 tune;
+	u8  lnaband;
+	u8  b[10];
+	int i;
+
+	priv = fe->tuner_priv;
+
+	mt2266_writereg(priv,0x17,0x6d);
+	mt2266_writereg(priv,0x1c,0xff);
+
+	freq = params->frequency / 1000; // Hz -> kHz
+	priv->bandwidth = (fe->ops.info.type == FE_OFDM) ? params->u.ofdm.bandwidth : 0;
+	priv->frequency = freq * 1000;
+	tune=2 * freq * (8192/16) / (FREF/16);
+
+	if (freq <= 495000) lnaband = 0xEE; else
+	if (freq <= 525000) lnaband = 0xDD; else
+	if (freq <= 550000) lnaband = 0xCC; else
+	if (freq <= 580000) lnaband = 0xBB; else
+	if (freq <= 605000) lnaband = 0xAA; else
+	if (freq <= 630000) lnaband = 0x99; else
+	if (freq <= 655000) lnaband = 0x88; else
+	if (freq <= 685000) lnaband = 0x77; else
+	if (freq <= 710000) lnaband = 0x66; else
+	if (freq <= 735000) lnaband = 0x55; else
+	if (freq <= 765000) lnaband = 0x44; else
+	if (freq <= 802000) lnaband = 0x33; else
+	if (freq <= 840000) lnaband = 0x22; else lnaband = 0x11;
+
+	msleep(100);
+	mt2266_writeregs(priv,(params->u.ofdm.bandwidth==BANDWIDTH_6_MHZ)?mt2266_init_6mhz:
+				(params->u.ofdm.bandwidth==BANDWIDTH_7_MHZ)?mt2266_init_7mhz:
+				mt2266_init_8mhz,sizeof(mt2266_init_8mhz));
+
+	b[0] = REG_TUNE;
+	b[1] = (tune >> 8) & 0x1F;
+	b[2] = tune & 0xFF;
+	b[3] = tune >> 13;
+	mt2266_writeregs(priv,b,4);
+
+	dprintk("set_parms: tune=%d band=%d\n",(int)tune,(int)lnaband);
+	dprintk("set_parms: [1..3]: %2x %2x %2x",(int)b[1],(int)b[2],(int)b[3]);
+
+	b[0] = 0x05;
+	b[1] = 0x62;
+	b[2] = lnaband;
+	mt2266_writeregs(priv,b,3);
+
+	//Waits for pll lock or timeout
+	i = 0;
+	do {
+		mt2266_readreg(priv,REG_LOCK,b);
+		if ((b[0] & 0x40)==0x40)
+			break;
+		msleep(10);
+		i++;
+	} while (i<10);
+	dprintk("Lock when i=%i\n",(int)i);
+	return ret;
+}
+
+static void mt2266_calibrate(struct mt2266_priv *priv)
+{
+	mt2266_writereg(priv,0x11,0x03);
+	mt2266_writereg(priv,0x11,0x01);
+
+	mt2266_writeregs(priv,mt2266_init1,sizeof(mt2266_init1));
+	mt2266_writeregs(priv,mt2266_init2,sizeof(mt2266_init2));
+
+	mt2266_writereg(priv,0x33,0x5e);
+	mt2266_writereg(priv,0x10,0x10);
+	mt2266_writereg(priv,0x10,0x00);
+
+	mt2266_writeregs(priv,mt2266_init_8mhz,sizeof(mt2266_init_8mhz));
+
+	msleep(25);
+	mt2266_writereg(priv,0x17,0x6d);
+	mt2266_writereg(priv,0x1c,0x00);
+	msleep(75);
+	mt2266_writereg(priv,0x17,0x6d);
+	mt2266_writereg(priv,0x1c,0xff);
+}
+
+static int mt2266_get_frequency(struct dvb_frontend *fe, u32 *frequency)
+{
+	struct mt2266_priv *priv = fe->tuner_priv;
+	*frequency = priv->frequency;
+	return 0;
+}
+
+static int mt2266_get_bandwidth(struct dvb_frontend *fe, u32 *bandwidth)
+{
+	struct mt2266_priv *priv = fe->tuner_priv;
+	*bandwidth = priv->bandwidth;
+	return 0;
+}
+
+static int mt2266_init(struct dvb_frontend *fe)
+{
+	struct mt2266_priv *priv = fe->tuner_priv;
+	mt2266_writereg(priv,0x17,0x6d);
+	mt2266_writereg(priv,0x1c,0xff);
+	return 0;
+}
+
+static int mt2266_sleep(struct dvb_frontend *fe)
+{
+	struct mt2266_priv *priv = fe->tuner_priv;
+	mt2266_writereg(priv,0x17,0x6d);
+	mt2266_writereg(priv,0x1c,0x00);
+	return 0;
+}
+
+static int mt2266_release(struct dvb_frontend *fe)
+{
+	kfree(fe->tuner_priv);
+	fe->tuner_priv = NULL;
+	return 0;
+}
+
+static const struct dvb_tuner_ops mt2266_tuner_ops = {
+	.info = {
+		.name           = "Microtune MT2266",
+		.frequency_min  = 470000000,
+		.frequency_max  = 860000000,
+		.frequency_step =     50000,
+	},
+	.release       = mt2266_release,
+	.init          = mt2266_init,
+	.sleep         = mt2266_sleep,
+	.set_params    = mt2266_set_params,
+	.get_frequency = mt2266_get_frequency,
+	.get_bandwidth = mt2266_get_bandwidth
+};
+
+struct dvb_frontend * mt2266_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2266_config *cfg)
+{
+	struct mt2266_priv *priv = NULL;
+	u8 id = 0;
+
+	priv = kzalloc(sizeof(struct mt2266_priv), GFP_KERNEL);
+	if (priv == NULL)
+		return NULL;
+
+	priv->cfg      = cfg;
+	priv->i2c      = i2c;
+
+	if (mt2266_readreg(priv,0,&id) != 0) {
+		kfree(priv);
+		return NULL;
+	}
+	if (id != PART_REV) {
+		kfree(priv);
+		return NULL;
+	}
+	printk(KERN_INFO "MT2266: successfully identified\n");
+	memcpy(&fe->ops.tuner_ops, &mt2266_tuner_ops, sizeof(struct dvb_tuner_ops));
+
+	fe->tuner_priv = priv;
+	mt2266_calibrate(priv);
+	return fe;
+}
+EXPORT_SYMBOL(mt2266_attach);
+
+MODULE_AUTHOR("Olivier DANET");
+MODULE_DESCRIPTION("Microtune MT2266 silicon tuner driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/dvb/frontends/mt2266.h b/drivers/media/dvb/frontends/mt2266.h
new file mode 100644
index 000000000000..f31dd613ad37
--- /dev/null
+++ b/drivers/media/dvb/frontends/mt2266.h
@@ -0,0 +1,37 @@
+/*
+ *  Driver for Microtune MT2266 "Direct conversion low power broadband tuner"
+ *
+ *  Copyright (c) 2007 Olivier DANET <odanet@caramail.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; 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.
+ */
+
+#ifndef MT2266_H
+#define MT2266_H
+
+struct dvb_frontend;
+struct i2c_adapter;
+
+struct mt2266_config {
+	u8 i2c_address;
+};
+
+#if defined(CONFIG_DVB_TUNER_MT2266) || (defined(CONFIG_DVB_TUNER_MT2266_MODULE) && defined(MODULE))
+extern struct dvb_frontend * mt2266_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2266_config *cfg);
+#else
+static inline struct dvb_frontend * mt2266_attach(struct dvb_frontend *fe, struct i2c_adapter *i2c, struct mt2266_config *cfg)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
+	return NULL;
+}
+#endif // CONFIG_DVB_TUNER_MT2266
+
+#endif