[media] dib0700: add initial code for PCTV 340e by Davide Ferri

This is initial code written by Davide Ferri for the PCTV 340e, including
a new xc4000 driver.  I am checking in all the code unmodified, and making
no assertions about its quality (other than confirming it compiles).

[mchehab@redhat.com: rebased on the top of the current tree]
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Davide Ferri <davidef1986@gmail.com>
Cc: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

5 files changed, 1159 insertions, 0 deletions

diff --git a/drivers/media/common/tuners/Kconfig b/drivers/media/common/tuners/Kconfig
index 22d3ca36370e..996302ae210e 100644
--- a/drivers/media/common/tuners/Kconfig
+++ b/drivers/media/common/tuners/Kconfig
@@ -23,6 +23,7 @@ config MEDIA_TUNER
 	depends on VIDEO_MEDIA && I2C
 	select MEDIA_TUNER_XC2028 if !MEDIA_TUNER_CUSTOMISE
 	select MEDIA_TUNER_XC5000 if !MEDIA_TUNER_CUSTOMISE
+	select MEDIA_TUNER_XC4000 if !MEDIA_TUNER_CUSTOMISE
 	select MEDIA_TUNER_MT20XX if !MEDIA_TUNER_CUSTOMISE
 	select MEDIA_TUNER_TDA8290 if !MEDIA_TUNER_CUSTOMISE
 	select MEDIA_TUNER_TEA5761 if !MEDIA_TUNER_CUSTOMISE
@@ -152,6 +153,15 @@ config MEDIA_TUNER_XC5000
 	  This device is only used inside a SiP called together with a
 	  demodulator for now.
 
+config MEDIA_TUNER_XC4000
+	tristate "Xceive XC4000 silicon tuner"
+	depends on VIDEO_MEDIA && I2C
+	default m if MEDIA_TUNER_CUSTOMISE
+	help
+	  A driver for the silicon tuner XC4000 from Xceive.
+	  This device is only used inside a SiP called together with a
+	  demodulator for now.
+
 config MEDIA_TUNER_MXL5005S
 	tristate "MaxLinear MSL5005S silicon tuner"
 	depends on VIDEO_MEDIA && I2C
diff --git a/drivers/media/common/tuners/Makefile b/drivers/media/common/tuners/Makefile
index 2cb4f5327843..20d24fca2cfb 100644
--- a/drivers/media/common/tuners/Makefile
+++ b/drivers/media/common/tuners/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_MEDIA_TUNER_TDA9887) += tda9887.o
 obj-$(CONFIG_MEDIA_TUNER_TDA827X) += tda827x.o
 obj-$(CONFIG_MEDIA_TUNER_TDA18271) += tda18271.o
 obj-$(CONFIG_MEDIA_TUNER_XC5000) += xc5000.o
+obj-$(CONFIG_MEDIA_TUNER_XC4000) += xc4000.o
 obj-$(CONFIG_MEDIA_TUNER_MT2060) += mt2060.o
 obj-$(CONFIG_MEDIA_TUNER_MT2266) += mt2266.o
 obj-$(CONFIG_MEDIA_TUNER_QT1010) += qt1010.o
diff --git a/drivers/media/common/tuners/tuner-types.c b/drivers/media/common/tuners/tuner-types.c
index afba6dc5e080..94a603a60842 100644
--- a/drivers/media/common/tuners/tuner-types.c
+++ b/drivers/media/common/tuners/tuner-types.c
@@ -1805,6 +1805,10 @@ struct tunertype tuners[] = {
 		.name   = "Xceive 5000 tuner",
 		/* see xc5000.c for details */
 	},
+	[TUNER_XC4000] = { /* Xceive 4000 */
+		.name   = "Xceive 4000 tuner",
+		/* see xc4000.c for details */
+	},
 	[TUNER_TCL_MF02GIP_5N] = { /* TCL tuner MF02GIP-5N-E */
 		.name   = "TCL tuner MF02GIP-5N-E",
 		.params = tuner_tcl_mf02gip_5n_params,
diff --git a/drivers/media/common/tuners/xc4000.c b/drivers/media/common/tuners/xc4000.c
new file mode 100644
index 000000000000..68f5e2beee1e
--- /dev/null
+++ b/drivers/media/common/tuners/xc4000.c
@@ -0,0 +1,1083 @@
+/*
+ *  Driver for Xceive XC4000 "QAM/8VSB single chip tuner"
+ *
+ *  Copyright (c) 2007 Xceive Corporation
+ *  Copyright (c) 2007 Steven Toth <stoth@linuxtv.org>
+ *  Copyright (c) 2009 Devin Heitmueller <dheitmueller@kernellabs.com>
+ *  Copyright (c) 2009 Davide Ferri <d.ferri@zero11.it>
+ *
+ *  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.
+ */
+
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/videodev2.h>
+#include <linux/delay.h>
+#include <linux/dvb/frontend.h>
+#include <linux/i2c.h>
+
+#include "dvb_frontend.h"
+
+#include "xc4000.h"
+#include "tuner-i2c.h"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
+
+static int no_poweroff;
+module_param(no_poweroff, int, 0644);
+MODULE_PARM_DESC(no_poweroff, "0 (default) powers device off when not used.\n"
+	"\t\t1 keep device energized and with tuner ready all the times.\n"
+	"\t\tFaster, but consumes more power and keeps the device hotter");
+
+static DEFINE_MUTEX(xc4000_list_mutex);
+static LIST_HEAD(hybrid_tuner_instance_list);
+
+#define dprintk(level, fmt, arg...) if (debug >= level) \
+	printk(KERN_INFO "%s: " fmt, "xc4000", ## arg)
+
+#define XC4000_DEFAULT_FIRMWARE "dvb-fe-xc4000-1.4.26.fw"
+#define XC4000_DEFAULT_FIRMWARE_SIZE 8236
+
+struct xc4000_priv {
+	struct tuner_i2c_props i2c_props;
+	struct list_head hybrid_tuner_instance_list;
+
+	u32 if_khz;
+	u32 freq_hz;
+	u32 bandwidth;
+	u8  video_standard;
+	u8  rf_mode;
+};
+
+/* Misc Defines */
+#define MAX_TV_STANDARD			23
+#define XC_MAX_I2C_WRITE_LENGTH		64
+
+/* Signal Types */
+#define XC_RF_MODE_AIR			0
+#define XC_RF_MODE_CABLE		1
+
+/* Result codes */
+#define XC_RESULT_SUCCESS		0
+#define XC_RESULT_RESET_FAILURE		1
+#define XC_RESULT_I2C_WRITE_FAILURE	2
+#define XC_RESULT_I2C_READ_FAILURE	3
+#define XC_RESULT_OUT_OF_RANGE		5
+
+/* Product id */
+#define XC_PRODUCT_ID_FW_NOT_LOADED	0x2000
+#define XC_PRODUCT_ID_FW_LOADED 	0x0FA0 /* WAS: 0x1388*/
+
+/* Registers */
+#define XREG_INIT         0x00
+#define XREG_VIDEO_MODE   0x01
+#define XREG_AUDIO_MODE   0x02
+#define XREG_RF_FREQ      0x03
+#define XREG_D_CODE       0x04
+#define XREG_IF_OUT       0x05 /* ?? */
+#define XREG_SEEK_MODE    0x07 /* WAS: 0x06 */
+#define XREG_POWER_DOWN   0x08 /* WAS: 0x0A Obsolete */
+#define XREG_SIGNALSOURCE 0x0A /* WAS: 0x0D 0=Air, 1=Cable */
+//#define XREG_SMOOTHEDCVBS 0x0E
+//#define XREG_XTALFREQ     0x0F
+//#define XREG_FINERFREQ    0x10
+//#define XREG_DDIMODE      0x11
+
+#define XREG_ADC_ENV      0x00
+#define XREG_QUALITY      0x01
+#define XREG_FRAME_LINES  0x02
+#define XREG_HSYNC_FREQ   0x03
+#define XREG_LOCK         0x04
+#define XREG_FREQ_ERROR   0x05
+#define XREG_SNR          0x06
+#define XREG_VERSION      0x07
+#define XREG_PRODUCT_ID   0x08
+//#define XREG_BUSY         0x09
+//#define XREG_BUILD        0x0D
+
+/*
+   Basic firmware description. This will remain with
+   the driver for documentation purposes.
+
+   This represents an I2C firmware file encoded as a
+   string of unsigned char. Format is as follows:
+
+   char[0  ]=len0_MSB  -> len = len_MSB * 256 + len_LSB
+   char[1  ]=len0_LSB  -> length of first write transaction
+   char[2  ]=data0 -> first byte to be sent
+   char[3  ]=data1
+   char[4  ]=data2
+   char[   ]=...
+   char[M  ]=dataN  -> last byte to be sent
+   char[M+1]=len1_MSB  -> len = len_MSB * 256 + len_LSB
+   char[M+2]=len1_LSB  -> length of second write transaction
+   char[M+3]=data0
+   char[M+4]=data1
+   ...
+   etc.
+
+   The [len] value should be interpreted as follows:
+
+   len= len_MSB _ len_LSB
+   len=1111_1111_1111_1111   : End of I2C_SEQUENCE
+   len=0000_0000_0000_0000   : Reset command: Do hardware reset
+   len=0NNN_NNNN_NNNN_NNNN   : Normal transaction: number of bytes = {1:32767)
+   len=1WWW_WWWW_WWWW_WWWW   : Wait command: wait for {1:32767} ms
+
+   For the RESET and WAIT commands, the two following bytes will contain
+   immediately the length of the following transaction.
+
+*/
+struct XC_TV_STANDARD {
+	char *Name;
+	u16 AudioMode;
+	u16 VideoMode;
+};
+
+/* Tuner standards */
+#define MN_NTSC_PAL_BTSC	0
+#define MN_NTSC_PAL_A2		1
+#define MN_NTSC_PAL_EIAJ	2
+#define MN_NTSC_PAL_Mono	3
+#define BG_PAL_A2		4
+#define BG_PAL_NICAM		5
+#define BG_PAL_MONO		6
+#define I_PAL_NICAM		7
+#define I_PAL_NICAM_MONO	8
+#define DK_PAL_A2		9
+#define DK_PAL_NICAM		10
+#define DK_PAL_MONO		11
+#define DK_SECAM_A2DK1		12
+#define DK_SECAM_A2LDK3 	13
+#define DK_SECAM_A2MONO 	14
+#define L_SECAM_NICAM		15
+#define LC_SECAM_NICAM		16
+#define DTV6			17
+#define DTV8			18
+#define DTV7_8			19
+#define DTV7			20
+#define FM_Radio_INPUT2 	21
+#define FM_Radio_INPUT1 	22
+
+/* WAS :
+static struct XC_TV_STANDARD XC4000_Standard[MAX_TV_STANDARD] = {
+	{"M/N-NTSC/PAL-BTSC", 0x0400, 0x8020},
+	{"M/N-NTSC/PAL-A2",   0x0600, 0x8020},
+	{"M/N-NTSC/PAL-EIAJ", 0x0440, 0x8020},
+	{"M/N-NTSC/PAL-Mono", 0x0478, 0x8020},
+	{"B/G-PAL-A2",        0x0A00, 0x8049},
+	{"B/G-PAL-NICAM",     0x0C04, 0x8049},
+	{"B/G-PAL-MONO",      0x0878, 0x8059},
+	{"I-PAL-NICAM",       0x1080, 0x8009},
+	{"I-PAL-NICAM-MONO",  0x0E78, 0x8009},
+	{"D/K-PAL-A2",        0x1600, 0x8009},
+	{"D/K-PAL-NICAM",     0x0E80, 0x8009},
+	{"D/K-PAL-MONO",      0x1478, 0x8009},
+	{"D/K-SECAM-A2 DK1",  0x1200, 0x8009},
+	{"D/K-SECAM-A2 L/DK3", 0x0E00, 0x8009},
+	{"D/K-SECAM-A2 MONO", 0x1478, 0x8009},
+	{"L-SECAM-NICAM",     0x8E82, 0x0009},
+	{"L'-SECAM-NICAM",    0x8E82, 0x4009},
+	{"DTV6",              0x00C0, 0x8002},
+	{"DTV8",              0x00C0, 0x800B},
+	{"DTV7/8",            0x00C0, 0x801B},
+	{"DTV7",              0x00C0, 0x8007},
+	{"FM Radio-INPUT2",   0x9802, 0x9002},
+	{"FM Radio-INPUT1",   0x0208, 0x9002}
+};*/
+
+static struct XC_TV_STANDARD XC4000_Standard[MAX_TV_STANDARD] = {
+	{"M/N-NTSC/PAL-BTSC", 0x0000, 0x8020},
+	{"M/N-NTSC/PAL-A2",   0x0000, 0x8020},
+	{"M/N-NTSC/PAL-EIAJ", 0x0040, 0x8020},
+	{"M/N-NTSC/PAL-Mono", 0x0078, 0x8020},
+	{"B/G-PAL-A2",        0x0000, 0x8059},
+	{"B/G-PAL-NICAM",     0x0004, 0x8059},
+	{"B/G-PAL-MONO",      0x0078, 0x8059},
+	{"I-PAL-NICAM",       0x0080, 0x8049},
+	{"I-PAL-NICAM-MONO",  0x0078, 0x8049},
+	{"D/K-PAL-A2",        0x0000, 0x8049},
+	{"D/K-PAL-NICAM",     0x0080, 0x8049},
+	{"D/K-PAL-MONO",      0x0078, 0x8049},
+	{"D/K-SECAM-A2 DK1",  0x0000, 0x8049},
+	{"D/K-SECAM-A2 L/DK3", 0x0000, 0x8049},
+	{"D/K-SECAM-A2 MONO", 0x0078, 0x8049},
+	{"L-SECAM-NICAM",     0x8080, 0x0009},
+	{"L'-SECAM-NICAM",    0x8080, 0x4009},
+	{"DTV6",              0x00C0, 0x8002},
+	{"DTV8",              0x00C0, 0x800B},
+	{"DTV7/8",            0x00C0, 0x801B},
+	{"DTV7",              0x00C0, 0x8007},
+	{"FM Radio-INPUT2",   0x0008, 0x9800},
+	{"FM Radio-INPUT1",   0x0008, 0x9000}
+};
+
+static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe);
+static int xc4000_is_firmware_loaded(struct dvb_frontend *fe);
+static int xc4000_readreg(struct xc4000_priv *priv, u16 reg, u16 *val);
+static int xc4000_TunerReset(struct dvb_frontend *fe);
+
+static int xc_send_i2c_data(struct xc4000_priv *priv, u8 *buf, int len)
+{
+	struct i2c_msg msg = { .addr = priv->i2c_props.addr,
+			       .flags = 0, .buf = buf, .len = len };
+
+	if (i2c_transfer(priv->i2c_props.adap, &msg, 1) != 1) {
+		printk(KERN_ERR "xc4000: I2C write failed (len=%i)\n", len);
+		return XC_RESULT_I2C_WRITE_FAILURE;
+	}
+	return XC_RESULT_SUCCESS;
+}
+
+/* This routine is never used because the only time we read data from the
+   i2c bus is when we read registers, and we want that to be an atomic i2c
+   transaction in case we are on a multi-master bus */
+static int xc_read_i2c_data(struct xc4000_priv *priv, u8 *buf, int len)
+{
+	struct i2c_msg msg = { .addr = priv->i2c_props.addr,
+		.flags = I2C_M_RD, .buf = buf, .len = len };
+
+	if (i2c_transfer(priv->i2c_props.adap, &msg, 1) != 1) {
+		printk(KERN_ERR "xc4000 I2C read failed (len=%i)\n", len);
+		return -EREMOTEIO;
+	}
+	return 0;
+}
+
+static void xc_wait(int wait_ms)
+{
+	msleep(wait_ms);
+}
+
+static int xc4000_TunerReset(struct dvb_frontend *fe)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	int ret;
+
+	dprintk(1, "%s()\n", __func__);
+
+	if (fe->callback) {
+		ret = fe->callback(((fe->dvb) && (fe->dvb->priv)) ?
+					   fe->dvb->priv :
+					   priv->i2c_props.adap->algo_data,
+					   DVB_FRONTEND_COMPONENT_TUNER,
+					   XC4000_TUNER_RESET, 0);
+		if (ret) {
+			printk(KERN_ERR "xc4000: reset failed\n");
+			return XC_RESULT_RESET_FAILURE;
+		}
+	} else {
+		printk(KERN_ERR "xc4000: no tuner reset callback function, fatal\n");
+		return XC_RESULT_RESET_FAILURE;
+	}
+	return XC_RESULT_SUCCESS;
+}
+
+static int xc_write_reg(struct xc4000_priv *priv, u16 regAddr, u16 i2cData)
+{
+	u8 buf[4];
+//	int WatchDogTimer = 100;
+	int result;
+
+	buf[0] = (regAddr >> 8) & 0xFF;
+	buf[1] = regAddr & 0xFF;
+	buf[2] = (i2cData >> 8) & 0xFF;
+	buf[3] = i2cData & 0xFF;
+	result = xc_send_i2c_data(priv, buf, 4);
+//WAS THERE
+//	if (result == XC_RESULT_SUCCESS) {
+//		/* wait for busy flag to clear */
+//		while ((WatchDogTimer > 0) && (result == XC_RESULT_SUCCESS)) {
+//			buf[0] = 0;
+//			buf[1] = XREG_BUSY;
+//
+//			result = xc_send_i2c_data(priv, buf, 2);
+//			if (result == XC_RESULT_SUCCESS) {
+//				result = xc_read_i2c_data(priv, buf, 2);
+//				if (result == XC_RESULT_SUCCESS) {
+//					if ((buf[0] == 0) && (buf[1] == 0)) {
+//						/* busy flag cleared */
+//					break;
+//					} else {
+//						xc_wait(5); /* wait 5 ms */
+//						WatchDogTimer--;
+//					}
+//				}
+//			}
+//		}
+//	}
+//	if (WatchDogTimer < 0)
+//		result = XC_RESULT_I2C_WRITE_FAILURE;
+
+	return result;
+}
+
+static int xc_load_i2c_sequence(struct dvb_frontend *fe, const u8 *i2c_sequence)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+
+	int i, nbytes_to_send, result;
+	unsigned int len, pos, index;
+	u8 buf[XC_MAX_I2C_WRITE_LENGTH];
+
+	index = 0;
+	while ((i2c_sequence[index] != 0xFF) ||
+		(i2c_sequence[index + 1] != 0xFF)) {
+		len = i2c_sequence[index] * 256 + i2c_sequence[index+1];
+		if (len == 0x0000) {
+			/* RESET command */
+			result = xc4000_TunerReset(fe);
+			index += 2;
+			if (result != XC_RESULT_SUCCESS)
+				return result;
+		} else if (len & 0x8000) {
+			/* WAIT command */
+			xc_wait(len & 0x7FFF);
+			index += 2;
+		} else {
+			/* Send i2c data whilst ensuring individual transactions
+			 * do not exceed XC_MAX_I2C_WRITE_LENGTH bytes.
+			 */
+			index += 2;
+			buf[0] = i2c_sequence[index];
+			buf[1] = i2c_sequence[index + 1];
+			pos = 2;
+			while (pos < len) {
+				if ((len - pos) > XC_MAX_I2C_WRITE_LENGTH - 2)
+					nbytes_to_send =
+						XC_MAX_I2C_WRITE_LENGTH;
+				else
+					nbytes_to_send = (len - pos + 2);
+				for (i = 2; i < nbytes_to_send; i++) {
+					buf[i] = i2c_sequence[index + pos +
+						i - 2];
+				}
+				result = xc_send_i2c_data(priv, buf,
+					nbytes_to_send);
+
+				if (result != XC_RESULT_SUCCESS)
+					return result;
+
+				pos += nbytes_to_send - 2;
+			}
+			index += len;
+		}
+	}
+	return XC_RESULT_SUCCESS;
+}
+
+static int xc_initialize(struct xc4000_priv *priv)
+{
+	dprintk(1, "%s()\n", __func__);
+	return xc_write_reg(priv, XREG_INIT, 0);
+}
+
+static int xc_SetTVStandard(struct xc4000_priv *priv,
+	u16 VideoMode, u16 AudioMode)
+{
+	int ret;
+	dprintk(1, "%s(0x%04x,0x%04x)\n", __func__, VideoMode, AudioMode);
+	dprintk(1, "%s() Standard = %s\n",
+		__func__,
+		XC4000_Standard[priv->video_standard].Name);
+
+	ret = xc_write_reg(priv, XREG_VIDEO_MODE, VideoMode);
+	if (ret == XC_RESULT_SUCCESS)
+		ret = xc_write_reg(priv, XREG_AUDIO_MODE, AudioMode);
+
+	return ret;
+}
+
+static int xc_SetSignalSource(struct xc4000_priv *priv, u16 rf_mode)
+{
+	dprintk(1, "%s(%d) Source = %s\n", __func__, rf_mode,
+		rf_mode == XC_RF_MODE_AIR ? "ANTENNA" : "CABLE");
+
+	if ((rf_mode != XC_RF_MODE_AIR) && (rf_mode != XC_RF_MODE_CABLE)) {
+		rf_mode = XC_RF_MODE_CABLE;
+		printk(KERN_ERR
+			"%s(), Invalid mode, defaulting to CABLE",
+			__func__);
+	}
+	return xc_write_reg(priv, XREG_SIGNALSOURCE, rf_mode);
+}
+
+static const struct dvb_tuner_ops xc4000_tuner_ops;
+
+static int xc_set_RF_frequency(struct xc4000_priv *priv, u32 freq_hz)
+{
+	u16 freq_code;
+
+	dprintk(1, "%s(%u)\n", __func__, freq_hz);
+
+	if ((freq_hz > xc4000_tuner_ops.info.frequency_max) ||
+		(freq_hz < xc4000_tuner_ops.info.frequency_min))
+		return XC_RESULT_OUT_OF_RANGE;
+
+	freq_code = (u16)(freq_hz / 15625);
+
+	/* WAS: Starting in firmware version 1.1.44, Xceive recommends using the
+	   FINERFREQ for all normal tuning (the doc indicates reg 0x03 should
+	   only be used for fast scanning for channel lock) */
+	return xc_write_reg(priv, XREG_RF_FREQ, freq_code); /* WAS: XREG_FINERFREQ */
+}
+
+
+static int xc_set_IF_frequency(struct xc4000_priv *priv, u32 freq_khz)
+{
+	u32 freq_code = (freq_khz * 1024)/1000;
+	dprintk(1, "%s(freq_khz = %d) freq_code = 0x%x\n",
+		__func__, freq_khz, freq_code);
+
+	return xc_write_reg(priv, XREG_IF_OUT, freq_code);
+}
+
+
+static int xc_get_ADC_Envelope(struct xc4000_priv *priv, u16 *adc_envelope)
+{
+	return xc4000_readreg(priv, XREG_ADC_ENV, adc_envelope);
+}
+
+static int xc_get_frequency_error(struct xc4000_priv *priv, u32 *freq_error_hz)
+{
+	int result;
+	u16 regData;
+	u32 tmp;
+
+	result = xc4000_readreg(priv, XREG_FREQ_ERROR, &regData);
+	if (result != XC_RESULT_SUCCESS)
+		return result;
+
+	tmp = (u32)regData;
+	(*freq_error_hz) = (tmp * 15625) / 1000;
+	return result;
+}
+
+static int xc_get_lock_status(struct xc4000_priv *priv, u16 *lock_status)
+{
+	return xc4000_readreg(priv, XREG_LOCK, lock_status);
+}
+
+static int xc_get_version(struct xc4000_priv *priv,
+	u8 *hw_majorversion, u8 *hw_minorversion,
+	u8 *fw_majorversion, u8 *fw_minorversion)
+{
+	u16 data;
+	int result;
+
+	result = xc4000_readreg(priv, XREG_VERSION, &data);
+	if (result != XC_RESULT_SUCCESS)
+		return result;
+
+	(*hw_majorversion) = (data >> 12) & 0x0F;
+	(*hw_minorversion) = (data >>  8) & 0x0F;
+	(*fw_majorversion) = (data >>  4) & 0x0F;
+	(*fw_minorversion) = data & 0x0F;
+
+	return 0;
+}
+
+/* WAS THERE
+static int xc_get_buildversion(struct xc4000_priv *priv, u16 *buildrev)
+{
+	return xc4000_readreg(priv, XREG_BUILD, buildrev);
+}*/
+
+static int xc_get_hsync_freq(struct xc4000_priv *priv, u32 *hsync_freq_hz)
+{
+	u16 regData;
+	int result;
+
+	result = xc4000_readreg(priv, XREG_HSYNC_FREQ, &regData);
+	if (result != XC_RESULT_SUCCESS)
+		return result;
+
+	(*hsync_freq_hz) = ((regData & 0x0fff) * 763)/100;
+	return result;
+}
+
+static int xc_get_frame_lines(struct xc4000_priv *priv, u16 *frame_lines)
+{
+	return xc4000_readreg(priv, XREG_FRAME_LINES, frame_lines);
+}
+
+static int xc_get_quality(struct xc4000_priv *priv, u16 *quality)
+{
+	return xc4000_readreg(priv, XREG_QUALITY, quality);
+}
+
+static u16 WaitForLock(struct xc4000_priv *priv)
+{
+	u16 lockState = 0;
+	int watchDogCount = 40;
+
+	while ((lockState == 0) && (watchDogCount > 0)) {
+		xc_get_lock_status(priv, &lockState);
+		if (lockState != 1) {
+			xc_wait(5);
+			watchDogCount--;
+		}
+	}
+	return lockState;
+}
+
+#define XC_TUNE_ANALOG  0
+#define XC_TUNE_DIGITAL 1
+static int xc_tune_channel(struct xc4000_priv *priv, u32 freq_hz, int mode)
+{
+	int found = 0;
+
+	dprintk(1, "%s(%u)\n", __func__, freq_hz);
+
+	if (xc_set_RF_frequency(priv, freq_hz) != XC_RESULT_SUCCESS)
+		return 0;
+
+	if (mode == XC_TUNE_ANALOG) {
+		if (WaitForLock(priv) == 1)
+			found = 1;
+	}
+
+	return found;
+}
+
+static int xc4000_readreg(struct xc4000_priv *priv, u16 reg, u16 *val)
+{
+	u8 buf[2] = { reg >> 8, reg & 0xff };
+	u8 bval[2] = { 0, 0 };
+	struct i2c_msg msg[2] = {
+		{ .addr = priv->i2c_props.addr,
+			.flags = 0, .buf = &buf[0], .len = 2 },
+		{ .addr = priv->i2c_props.addr,
+			.flags = I2C_M_RD, .buf = &bval[0], .len = 2 },
+	};
+
+	if (i2c_transfer(priv->i2c_props.adap, msg, 2) != 2) {
+		printk(KERN_WARNING "xc4000: I2C read failed\n");
+		return -EREMOTEIO;
+	}
+
+	*val = (bval[0] << 8) | bval[1];
+	return XC_RESULT_SUCCESS;
+}
+
+static int xc4000_fwupload(struct dvb_frontend *fe)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	const struct firmware *fw;
+	int ret;
+
+	/* request the firmware, this will block and timeout */
+	printk(KERN_INFO "xc4000: waiting for firmware upload (%s)...\n",
+		XC4000_DEFAULT_FIRMWARE);
+
+	ret = request_firmware(&fw, XC4000_DEFAULT_FIRMWARE,
+		priv->i2c_props.adap->dev.parent);
+	if (ret) {
+		printk(KERN_ERR "xc4000: Upload failed. (file not found?)\n");
+		ret = XC_RESULT_RESET_FAILURE;
+		goto out;
+	} else {
+		printk(KERN_DEBUG "xc4000: firmware read %Zu bytes.\n",
+		       fw->size);
+		ret = XC_RESULT_SUCCESS;
+	}
+
+	if (fw->size != XC4000_DEFAULT_FIRMWARE_SIZE) {
+		printk(KERN_ERR "xc4000: firmware incorrect size\n");
+		ret = XC_RESULT_RESET_FAILURE;
+	} else {
+		printk(KERN_INFO "xc4000: firmware uploading...\n");
+		ret = xc_load_i2c_sequence(fe,  fw->data);
+		printk(KERN_INFO "xc4000: firmware upload complete...\n");
+	}
+
+out:
+	release_firmware(fw);
+	return ret;
+}
+
+static void xc_debug_dump(struct xc4000_priv *priv)
+{
+	u16 adc_envelope;
+	u32 freq_error_hz = 0;
+	u16 lock_status;
+	u32 hsync_freq_hz = 0;
+	u16 frame_lines;
+	u16 quality;
+	u8 hw_majorversion = 0, hw_minorversion = 0;
+	u8 fw_majorversion = 0, fw_minorversion = 0;
+//	u16 fw_buildversion = 0;
+
+	/* Wait for stats to stabilize.
+	 * Frame Lines needs two frame times after initial lock
+	 * before it is valid.
+	 */
+	xc_wait(100);
+
+	xc_get_ADC_Envelope(priv,  &adc_envelope);
+	dprintk(1, "*** ADC envelope (0-1023) = %d\n", adc_envelope);
+
+	xc_get_frequency_error(priv, &freq_error_hz);
+	dprintk(1, "*** Frequency error = %d Hz\n", freq_error_hz);
+
+	xc_get_lock_status(priv,  &lock_status);
+	dprintk(1, "*** Lock status (0-Wait, 1-Locked, 2-No-signal) = %d\n",
+		lock_status);
+
+	xc_get_version(priv,  &hw_majorversion, &hw_minorversion,
+		&fw_majorversion, &fw_minorversion);
+// WAS:
+//	xc_get_buildversion(priv,  &fw_buildversion);
+//	dprintk(1, "*** HW: V%02x.%02x, FW: V%02x.%02x.%04x\n",
+//		hw_majorversion, hw_minorversion,
+//		fw_majorversion, fw_minorversion, fw_buildversion);
+// NOW:
+	dprintk(1, "*** HW: V%02x.%02x, FW: V%02x.%02x\n",
+		hw_majorversion, hw_minorversion,
+		fw_majorversion, fw_minorversion);
+
+	xc_get_hsync_freq(priv,  &hsync_freq_hz);
+	dprintk(1, "*** Horizontal sync frequency = %d Hz\n", hsync_freq_hz);
+
+	xc_get_frame_lines(priv,  &frame_lines);
+	dprintk(1, "*** Frame lines = %d\n", frame_lines);
+
+	xc_get_quality(priv,  &quality);
+	dprintk(1, "*** Quality (0:<8dB, 7:>56dB) = %d\n", quality);
+}
+
+static int xc4000_set_params(struct dvb_frontend *fe,
+	struct dvb_frontend_parameters *params)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	int ret;
+
+	if (xc4000_is_firmware_loaded(fe) != XC_RESULT_SUCCESS)
+		xc_load_fw_and_init_tuner(fe);
+
+	dprintk(1, "%s() frequency=%d (Hz)\n", __func__, params->frequency);
+
+	if (fe->ops.info.type == FE_ATSC) {
+		dprintk(1, "%s() ATSC\n", __func__);
+		switch (params->u.vsb.modulation) {
+		case VSB_8:
+		case VSB_16:
+			dprintk(1, "%s() VSB modulation\n", __func__);
+			priv->rf_mode = XC_RF_MODE_AIR;
+			priv->freq_hz = params->frequency - 1750000;
+			priv->bandwidth = BANDWIDTH_6_MHZ;
+			priv->video_standard = DTV6;
+			break;
+		case QAM_64:
+		case QAM_256:
+		case QAM_AUTO:
+			dprintk(1, "%s() QAM modulation\n", __func__);
+			priv->rf_mode = XC_RF_MODE_CABLE;
+			priv->freq_hz = params->frequency - 1750000;
+			priv->bandwidth = BANDWIDTH_6_MHZ;
+			priv->video_standard = DTV6;
+			break;
+		default:
+			return -EINVAL;
+		}
+	} else if (fe->ops.info.type == FE_OFDM) {
+		dprintk(1, "%s() OFDM\n", __func__);
+		switch (params->u.ofdm.bandwidth) {
+		case BANDWIDTH_6_MHZ:
+			priv->bandwidth = BANDWIDTH_6_MHZ;
+			priv->video_standard = DTV6;
+			priv->freq_hz = params->frequency - 1750000;
+			break;
+		case BANDWIDTH_7_MHZ:
+			printk(KERN_ERR "xc4000 bandwidth 7MHz not supported\n");
+			return -EINVAL;
+		case BANDWIDTH_8_MHZ:
+			priv->bandwidth = BANDWIDTH_8_MHZ;
+			priv->video_standard = DTV8;
+			priv->freq_hz = params->frequency - 2750000;
+			break;
+		default:
+			printk(KERN_ERR "xc4000 bandwidth not set!\n");
+			return -EINVAL;
+		}
+		priv->rf_mode = XC_RF_MODE_AIR;
+	} else {
+		printk(KERN_ERR "xc4000 modulation type not supported!\n");
+		return -EINVAL;
+	}
+
+	dprintk(1, "%s() frequency=%d (compensated)\n",
+		__func__, priv->freq_hz);
+
+	ret = xc_SetSignalSource(priv, priv->rf_mode);
+	if (ret != XC_RESULT_SUCCESS) {
+		printk(KERN_ERR
+			"xc4000: xc_SetSignalSource(%d) failed\n",
+			priv->rf_mode);
+		return -EREMOTEIO;
+	}
+
+	ret = xc_SetTVStandard(priv,
+		XC4000_Standard[priv->video_standard].VideoMode,
+		XC4000_Standard[priv->video_standard].AudioMode);
+	if (ret != XC_RESULT_SUCCESS) {
+		printk(KERN_ERR "xc4000: xc_SetTVStandard failed\n");
+		return -EREMOTEIO;
+	}
+
+	ret = xc_set_IF_frequency(priv, priv->if_khz);
+	if (ret != XC_RESULT_SUCCESS) {
+		printk(KERN_ERR "xc4000: xc_Set_IF_frequency(%d) failed\n",
+		       priv->if_khz);
+		return -EIO;
+	}
+
+	xc_tune_channel(priv, priv->freq_hz, XC_TUNE_DIGITAL);
+
+	if (debug)
+		xc_debug_dump(priv);
+
+	return 0;
+}
+
+static int xc4000_is_firmware_loaded(struct dvb_frontend *fe)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	int ret;
+	u16 id;
+
+	ret = xc4000_readreg(priv, XREG_PRODUCT_ID, &id);
+	if (ret == XC_RESULT_SUCCESS) {
+		if (id == XC_PRODUCT_ID_FW_NOT_LOADED)
+			ret = XC_RESULT_RESET_FAILURE;
+		else
+			ret = XC_RESULT_SUCCESS;
+	}
+
+	dprintk(1, "%s() returns %s id = 0x%x\n", __func__,
+		ret == XC_RESULT_SUCCESS ? "True" : "False", id);
+	return ret;
+}
+
+static int xc4000_set_analog_params(struct dvb_frontend *fe,
+	struct analog_parameters *params)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	int ret;
+
+	if (xc4000_is_firmware_loaded(fe) != XC_RESULT_SUCCESS)
+		xc_load_fw_and_init_tuner(fe);
+
+	dprintk(1, "%s() frequency=%d (in units of 62.5khz)\n",
+		__func__, params->frequency);
+
+	/* Fix me: it could be air. */
+	priv->rf_mode = params->mode;
+	if (params->mode > XC_RF_MODE_CABLE)
+		priv->rf_mode = XC_RF_MODE_CABLE;
+
+	/* params->frequency is in units of 62.5khz */
+	priv->freq_hz = params->frequency * 62500;
+
+	/* FIX ME: Some video standards may have several possible audio
+		   standards. We simply default to one of them here.
+	 */
+	if (params->std & V4L2_STD_MN) {
+		/* default to BTSC audio standard */
+		priv->video_standard = MN_NTSC_PAL_BTSC;
+		goto tune_channel;
+	}
+
+	if (params->std & V4L2_STD_PAL_BG) {
+		/* default to NICAM audio standard */
+		priv->video_standard = BG_PAL_NICAM;
+		goto tune_channel;
+	}
+
+	if (params->std & V4L2_STD_PAL_I) {
+		/* default to NICAM audio standard */
+		priv->video_standard = I_PAL_NICAM;
+		goto tune_channel;
+	}
+
+	if (params->std & V4L2_STD_PAL_DK) {
+		/* default to NICAM audio standard */
+		priv->video_standard = DK_PAL_NICAM;
+		goto tune_channel;
+	}
+
+	if (params->std & V4L2_STD_SECAM_DK) {
+		/* default to A2 DK1 audio standard */
+		priv->video_standard = DK_SECAM_A2DK1;
+		goto tune_channel;
+	}
+
+	if (params->std & V4L2_STD_SECAM_L) {
+		priv->video_standard = L_SECAM_NICAM;
+		goto tune_channel;
+	}
+
+	if (params->std & V4L2_STD_SECAM_LC) {
+		priv->video_standard = LC_SECAM_NICAM;
+		goto tune_channel;
+	}
+
+tune_channel:
+	ret = xc_SetSignalSource(priv, priv->rf_mode);
+	if (ret != XC_RESULT_SUCCESS) {
+		printk(KERN_ERR
+			"xc4000: xc_SetSignalSource(%d) failed\n",
+			priv->rf_mode);
+		return -EREMOTEIO;
+	}
+
+	ret = xc_SetTVStandard(priv,
+		XC4000_Standard[priv->video_standard].VideoMode,
+		XC4000_Standard[priv->video_standard].AudioMode);
+	if (ret != XC_RESULT_SUCCESS) {
+		printk(KERN_ERR "xc4000: xc_SetTVStandard failed\n");
+		return -EREMOTEIO;
+	}
+
+	xc_tune_channel(priv, priv->freq_hz, XC_TUNE_ANALOG);
+
+	if (debug)
+		xc_debug_dump(priv);
+
+	return 0;
+}
+
+static int xc4000_get_frequency(struct dvb_frontend *fe, u32 *freq)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	dprintk(1, "%s()\n", __func__);
+	*freq = priv->freq_hz;
+	return 0;
+}
+
+static int xc4000_get_bandwidth(struct dvb_frontend *fe, u32 *bw)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	dprintk(1, "%s()\n", __func__);
+
+	*bw = priv->bandwidth;
+	return 0;
+}
+
+static int xc4000_get_status(struct dvb_frontend *fe, u32 *status)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	u16 lock_status = 0;
+
+	xc_get_lock_status(priv, &lock_status);
+
+	dprintk(1, "%s() lock_status = 0x%08x\n", __func__, lock_status);
+
+	*status = lock_status;
+
+	return 0;
+}
+
+static int xc_load_fw_and_init_tuner(struct dvb_frontend *fe)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	int ret = 0;
+
+	if (xc4000_is_firmware_loaded(fe) != XC_RESULT_SUCCESS) {
+		ret = xc4000_fwupload(fe);
+		if (ret != XC_RESULT_SUCCESS)
+			return ret;
+	}
+
+	/* Start the tuner self-calibration process */
+	ret |= xc_initialize(priv);
+
+	/* Wait for calibration to complete.
+	 * We could continue but XC4000 will clock stretch subsequent
+	 * I2C transactions until calibration is complete.  This way we
+	 * don't have to rely on clock stretching working.
+	 */
+	xc_wait(100);
+
+	/* Default to "CABLE" mode */
+	ret |= xc_write_reg(priv, XREG_SIGNALSOURCE, XC_RF_MODE_CABLE);
+
+	return ret;
+}
+
+static int xc4000_sleep(struct dvb_frontend *fe)
+{
+	int ret;
+
+	dprintk(1, "%s()\n", __func__);
+
+	/* Avoid firmware reload on slow devices */
+	if (no_poweroff)
+		return 0;
+
+	/* According to Xceive technical support, the "powerdown" register
+	   was removed in newer versions of the firmware.  The "supported"
+	   way to sleep the tuner is to pull the reset pin low for 10ms */
+	ret = xc4000_TunerReset(fe);
+	if (ret != XC_RESULT_SUCCESS) {
+		printk(KERN_ERR
+			"xc4000: %s() unable to shutdown tuner\n",
+			__func__);
+		return -EREMOTEIO;
+	} else
+		return XC_RESULT_SUCCESS;
+}
+
+static int xc4000_init(struct dvb_frontend *fe)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+	dprintk(1, "%s()\n", __func__);
+
+	if (xc_load_fw_and_init_tuner(fe) != XC_RESULT_SUCCESS) {
+		printk(KERN_ERR "xc4000: Unable to initialise tuner\n");
+		return -EREMOTEIO;
+	}
+
+	if (debug)
+		xc_debug_dump(priv);
+
+	return 0;
+}
+
+static int xc4000_release(struct dvb_frontend *fe)
+{
+	struct xc4000_priv *priv = fe->tuner_priv;
+
+	dprintk(1, "%s()\n", __func__);
+
+	mutex_lock(&xc4000_list_mutex);
+
+	if (priv)
+		hybrid_tuner_release_state(priv);
+
+	mutex_unlock(&xc4000_list_mutex);
+
+	fe->tuner_priv = NULL;
+
+	return 0;
+}
+
+static const struct dvb_tuner_ops xc4000_tuner_ops = {
+	.info = {
+		.name           = "Xceive XC4000",
+		.frequency_min  =    1000000,
+		.frequency_max  = 1023000000,
+		.frequency_step =      50000,
+	},
+
+	.release	   = xc4000_release,
+	.init		   = xc4000_init,
+	.sleep		   = xc4000_sleep,
+
+	.set_params	   = xc4000_set_params,
+	.set_analog_params = xc4000_set_analog_params,
+	.get_frequency	   = xc4000_get_frequency,
+	.get_bandwidth	   = xc4000_get_bandwidth,
+	.get_status	   = xc4000_get_status
+};
+
+struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe,
+				   struct i2c_adapter *i2c,
+				   struct xc4000_config *cfg)
+{
+	struct xc4000_priv *priv = NULL;
+	int instance;
+	u16 id = 0;
+
+	dprintk(1, "%s(%d-%04x)\n", __func__,
+		i2c ? i2c_adapter_id(i2c) : -1,
+		cfg ? cfg->i2c_address : -1);
+
+	mutex_lock(&xc4000_list_mutex);
+
+	instance = hybrid_tuner_request_state(struct xc4000_priv, priv,
+					      hybrid_tuner_instance_list,
+					      i2c, cfg->i2c_address, "xc4000");
+	switch (instance) {
+	case 0:
+		goto fail;
+		break;
+	case 1:
+		/* new tuner instance */
+		priv->bandwidth = BANDWIDTH_6_MHZ;
+		fe->tuner_priv = priv;
+		break;
+	default:
+		/* existing tuner instance */
+		fe->tuner_priv = priv;
+		break;
+	}
+
+	if (priv->if_khz == 0) {
+		/* If the IF hasn't been set yet, use the value provided by
+		   the caller (occurs in hybrid devices where the analog
+		   call to xc4000_attach occurs before the digital side) */
+		priv->if_khz = cfg->if_khz;
+	}
+
+	/* Check if firmware has been loaded. It is possible that another
+	   instance of the driver has loaded the firmware.
+	 */
+
+	if (xc4000_readreg(priv, XREG_PRODUCT_ID, &id) != XC_RESULT_SUCCESS)
+			goto fail;
+
+	switch (id) {
+	case XC_PRODUCT_ID_FW_LOADED:
+		printk(KERN_INFO
+			"xc4000: Successfully identified at address 0x%02x\n",
+			cfg->i2c_address);
+		printk(KERN_INFO
+			"xc4000: Firmware has been loaded previously\n");
+		break;
+	case XC_PRODUCT_ID_FW_NOT_LOADED:
+		printk(KERN_INFO
+			"xc4000: Successfully identified at address 0x%02x\n",
+			cfg->i2c_address);
+		printk(KERN_INFO
+			"xc4000: Firmware has not been loaded previously\n");
+		break;
+	default:
+		printk(KERN_ERR
+			"xc4000: Device not found at addr 0x%02x (0x%x)\n",
+			cfg->i2c_address, id);
+		goto fail;
+	}
+
+	mutex_unlock(&xc4000_list_mutex);
+
+	memcpy(&fe->ops.tuner_ops, &xc4000_tuner_ops,
+		sizeof(struct dvb_tuner_ops));
+
+	return fe;
+fail:
+	mutex_unlock(&xc4000_list_mutex);
+
+	xc4000_release(fe);
+	return NULL;
+}
+EXPORT_SYMBOL(xc4000_attach);
+
+MODULE_AUTHOR("Steven Toth, Davide Ferri");
+MODULE_DESCRIPTION("Xceive xc4000 silicon tuner driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/common/tuners/xc4000.h b/drivers/media/common/tuners/xc4000.h
new file mode 100644
index 000000000000..2bbbe9d6480b
--- /dev/null
+++ b/drivers/media/common/tuners/xc4000.h
@@ -0,0 +1,61 @@
+/*
+ *  Driver for Xceive XC4000 "QAM/8VSB single chip tuner"
+ *
+ *  Copyright (c) 2007 Steven Toth <stoth@linuxtv.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.
+ *
+ *  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 __XC4000_H__
+#define __XC4000_H__
+
+#include <linux/firmware.h>
+
+struct dvb_frontend;
+struct i2c_adapter;
+
+struct xc4000_config {
+	u8   i2c_address;
+	u32  if_khz;
+};
+
+/* xc4000 callback command */
+#define XC4000_TUNER_RESET		0
+
+/* For each bridge framework, when it attaches either analog or digital,
+ * it has to store a reference back to its _core equivalent structure,
+ * so that it can service the hardware by steering gpio's etc.
+ * Each bridge implementation is different so cast devptr accordingly.
+ * The xc4000 driver cares not for this value, other than ensuring
+ * it's passed back to a bridge during tuner_callback().
+ */
+
+#if defined(CONFIG_MEDIA_TUNER_XC4000) || \
+    (defined(CONFIG_MEDIA_TUNER_XC4000_MODULE) && defined(MODULE))
+extern struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe,
+					  struct i2c_adapter *i2c,
+					  struct xc4000_config *cfg);
+#else
+static inline struct dvb_frontend *xc4000_attach(struct dvb_frontend *fe,
+						 struct i2c_adapter *i2c,
+						 struct xc4000_config *cfg)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return NULL;
+}
+#endif
+
+#endif