path: root/drivers/media/common/tuners/xc5000.c

/*
 *  Driver for Xceive XC5000 "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>
 *
 *  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 "xc5000.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(xc5000_list_mutex);
static LIST_HEAD(hybrid_tuner_instance_list);

#define dprintk(level, fmt, arg...) if (debug >= level) \
	printk(KERN_INFO "%s: " fmt, "xc5000", ## arg)

struct xc5000_priv {
	struct tuner_i2c_props i2c_props;
	struct list_head hybrid_tuner_instance_list;

	u32 if_khz;
	u32 xtal_khz;
	u32 freq_hz;
	u32 bandwidth;
	u8  video_standard;
	u8  rf_mode;
	u8  radio_input;

	int chip_id;
};

/* Misc Defines */
#define MAX_TV_STANDARD			24
#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 	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
#define XREG_POWER_DOWN   0x0A /* Obsolete */
/* Set the output amplitude - SIF for analog, DTVP/DTVN for digital */
#define XREG_OUTPUT_AMP   0x0B
#define XREG_SIGNALSOURCE 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
#define FM_Radio_INPUT1_MONO	23

static struct XC_TV_STANDARD XC5000_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<