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

/*
 * budget-ci.c: driver for the SAA7146 based Budget DVB cards
 *
 * Compiled from various sources by Michael Hunold <michael@mihu.de>
 *
 *     msp430 IR support contributed by Jack Thomasson <jkt@Helius.COM>
 *     partially based on the Siemens DVB driver by Ralph+Marcus Metzler
 *
 * CI interface support (c) 2004 Andrew de Quincey <adq_dvb@lidskialf.net>
 *
 * 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 <linux/module.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/spinlock.h>
#include <media/ir-common.h>

#include "dvb_ca_en50221.h"
#include "stv0299.h"
#include "stv0297.h"
#include "tda1004x.h"
#include "lnbp21.h"
#include "bsbe1.h"
#include "bsru6.h"

/*
 * Regarding DEBIADDR_IR:
 * Some CI modules hang if random addresses are read.
 * Using address 0x4000 for the IR read means that we
 * use the same address as for CI version, which should
 * be a safe default.
 */
#define DEBIADDR_IR		0x4000
#define DEBIADDR_CICONTROL	0x0000
#define DEBIADDR_CIVERSION	0x4000
#define DEBIADDR_IO		0x1000
#define DEBIADDR_ATTR		0x3000

#define CICONTROL_RESET		0x01
#define CICONTROL_ENABLETS	0x02
#define CICONTROL_CAMDETECT	0x08

#define DEBICICTL		0x00420000
#define DEBICICAM		0x02420000

#define SLOTSTATUS_NONE		1
#define SLOTSTATUS_PRESENT	2
#define SLOTSTATUS_RESET	4
#define SLOTSTATUS_READY	8
#define SLOTSTATUS_OCCUPIED	(SLOTSTATUS_PRESENT|SLOTSTATUS_RESET|SLOTSTATUS_READY)

/* Milliseconds during which key presses are regarded as key repeat and during
 * which the debounce logic is active
 */
#define IR_REPEAT_TIMEOUT	350

/* RC5 device wildcard */
#define IR_DEVICE_ANY		255

/* Some remotes sends multiple sequences per keypress (e.g. Zenith sends two),
 * this setting allows the superflous sequences to be ignored
 */
static int debounce = 0;
module_param(debounce, int, 0644);
MODULE_PARM_DESC(debounce, "ignore repeated IR sequences (default: 0 = ignore no sequences)");

static int rc5_device = -1;
module_param(rc5_device, int, 0644);
MODULE_PARM_DESC(rc5_device, "only IR commands to given RC5 device (device = 0 - 31, any device = 255, default: autodetect)");

static int ir_debug = 0;
module_param(ir_debug, int, 0644);
MODULE_PARM_DESC(ir_debug, "enable debugging information for IR decoding");

struct budget_ci_ir {
	struct input_dev *dev;
	struct tasklet_struct msp430_irq_tasklet;
	char name[72]; /* 40 + 32 for (struct saa7146_dev).name */
	char phys[32];
	struct ir_input_state state;
	int rc5_device;
};

struct budget_ci {
	struct budget budget;
	struct tasklet_struct ciintf_irq_tasklet;
	int slot_status;
	int ci_irq;
	struct dvb_ca_en50221 ca;
	struct budget_ci_ir ir;
	u8 tuner_pll_address; /* used for philips_tdm1316l configs */
};

static void msp430_ir_keyup(unsigned long data)
{
	struct budget_ci_ir *ir = (struct budget_ci_ir *) data;
	ir_input_nokey(ir->dev, &ir->state);
}

static void msp430_ir_interrupt(unsigned long data)
{
	struct budget_ci *budget_ci = (struct budget_ci *) data;
	struct input_dev *dev = budget_ci->ir.dev;
	static int bounces = 0;
	int device;
	int