path: root/drivers/media/dvb/ttpci/budget-av.c

/*
 * budget-av.c: driver for the SAA7146 based Budget DVB cards
 *              with analog video in
 *
 * Compiled from various sources by Michael Hunold <michael@mihu.de>
 *
 * CI interface support (c) 2004 Olivier Gournet <ogournet@anevia.com> &
 *                               Andrew de Quincey <adq_dvb@lidskialf.net>
 *
 * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
 *
 * Copyright (C) 1999-2002 Ralph  Metzler
 *                       & Marcus Metzler for convergence integrated media GmbH
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 * Or, point your browser to http://www.gnu.org/copyleft/gpl.html
 *
 *
 * the project's page is at http://www.linuxtv.org/dvb/
 */

#include "budget.h"
#include "stv0299.h"
#include "tda10021.h"
#include "tda1004x.h"
#include <media/saa7146_vv.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/spinlock.h>

#include "dvb_ca_en50221.h"

#define DEBICICAM		0x02420000

struct budget_av {
	struct budget budget;
	struct video_device *vd;
	int cur_input;
	int has_saa7113;
	struct tasklet_struct ciintf_irq_tasklet;
	int slot_status;
	struct dvb_ca_en50221 ca;
};

/* GPIO CI Connections:
 * 0 - Vcc/Reset (Reset is controlled by capacitor)
 * 1 - Attribute Memory
 * 2 - Card Enable (Active Low)
 * 3 - Card Detect
 */

/****************************************************************************
 * INITIALIZATION
 ****************************************************************************/

static u8 i2c_readreg(struct i2c_adapter *i2c, u8 id, u8 reg)
{
	u8 mm1[] = { 0x00 };
	u8 mm2[] = { 0x00 };
	struct i2c_msg msgs[2];

	msgs[0].flags = 0;
	msgs[1].flags = I2C_M_RD;
	msgs[0].addr = msgs[1].addr = id / 2;
	mm1[0] = reg;
	msgs[0].len = 1;
	msgs[1].len = 1;
	msgs[0].buf = mm1;
	msgs[1].buf = mm2;

	i2c_transfer(i2c, msgs, 2);

	return mm2[0];
}

static int i2c_readregs(struct i2c_adapter *i2c, u8 id, u8 reg, u8 * buf, u8 len)
{
	u8 mm1[] = { reg };
	struct i2c_msg msgs[2] = {
		{.addr = id / 2,.flags = 0,.buf = mm1,.len = 1},
		{.addr = id / 2,.flags = I2C_M_RD,.buf = buf,.len = len}
	};

	if (i2c_transfer(i2c, msgs, 2) != 2)
		return -EIO;

	return 0;
}

static int i2c_writereg(struct i2c_adapter *i2c, u8 id, u8 reg, u8 val)
{
	u8<