/*
 *  Driver for the Conexant CX23885 PCIe bridge
 *
 *  Copyright (c) 2006 Steven Toth <stoth@hauppauge.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/init.h>
#include <linux/device.h>
#include <linux/fs.h>
#include <linux/kthread.h>
#include <linux/file.h>
#include <linux/suspend.h>

#include "cx23885.h"
#include "dvb-pll.h"
#include <media/v4l2-common.h>

#include "s5h1409.h"
#include "mt2131.h"

static unsigned int debug = 2;

#define dprintk(level,fmt, arg...)	if (debug >= level) \
	printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg)

/* ------------------------------------------------------------------ */

static int dvb_buf_setup(struct videobuf_queue *q,
			 unsigned int *count, unsigned int *size)
{
	struct cx23885_tsport *port = q->priv_data;

	port->ts_packet_size  = 188 * 4;
	port->ts_packet_count = 32;

	*size  = port->ts_packet_size * port->ts_packet_count;
	*count = 32;
	return 0;
}

static int dvb_buf_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
			   enum v4l2_field field)
{
	struct cx23885_tsport *port = q->priv_data;
	return cx23885_buf_prepare(q, port, (struct cx23885_buffer*)vb,field);
}

static void dvb_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
	struct cx23885_tsport *port = q->priv_data;
	cx23885_buf_queue(port, (struct cx23885_buffer*)vb);
}

static void dvb_buf_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
	cx23885_free_buffer(q, (struct cx23885_buffer*)vb);
}

static struct videobuf_queue_ops dvb_qops = {
	.buf_setup    = dvb_buf_setup,
	.buf_prepare  = dvb_buf_prepare,
	.buf_queue    = dvb_buf_queue,
	.buf_release  = dvb_buf_release,
};

static struct s5h1409_config hauppauge_hvr1800lp_config = {
	.demod_address = 0x32 >> 1,
	.output_mode   = S5H1409_SERIAL_OUTPUT,
	.gpio          = S5H1409_GPIO_OFF,
	.if_freq       = 44000,
	.inversion     = S5H1409_INVERSION_OFF
};

static struct s5h1409_config hauppauge_hvr1800_config = {
	.demod_address = 0x32 >> 1,
	.output_mode   = S5H1409_SERIAL_OUTPUT,
	.gpio          = S5H1409_GPIO_ON,
	.if_freq       = 44000,
	.inversion     = S5H1409_INVERSION_OFF
};


static struct mt2131_config hauppauge_hvr1800lp_rev2_tunerconfig = {
	0x61
};

static struct mt2131_config hauppauge_hvr1800_tunerconfig = {
	0x61
};

static int dvb_register(struct cx23885_tsport *port)
{
	struct cx23885_dev *dev = port->dev;

	/* init struct videobuf_dvb */
	port->dvb.name = dev->name;

	/* init frontend */
	switch (dev->board) {
	case CX23885_BOARD_HAUPPAUGE_HVR1800lp:
		port->dvb.frontend = dvb_attach(s5h1409_attach,
					       &hauppauge_hvr1800lp_config,
					       &dev->i2c_bus[0].i2c_adap);
		if (port->dvb.frontend != NULL) {
			dvb_attach(mt2131_attach,
				port->dvb.frontend,
				&dev->i2c_bus[0].i2c_adap,
				&hauppauge_hvr1800lp_rev2_tunerconfig,
				0);
		}
		break;
	case CX23885_BOARD_HAUPPAUGE_HVR1800:
		port->dvb.frontend = dvb_attach(s5h1409_attach,
					       &hauppauge_hvr1800_config,
					       &dev->i2c_bus[0].i2c_adap);
		if (port->dvb.frontend != NULL) {
			dvb_attach(mt2131_attach,
				port->dvb.frontend,
				&dev->i2c_bus[0].i2c_adap,
				&hauppauge_hvr1800_tunerconfig,
				0);
		}
		break;
	default:
		printk("%s: The frontend of your DVB/ATSC card isn't supported yet\n",
		       dev->name);
		break;
	}
	if (NULL == port->dvb.frontend) {
		printk("%s: frontend initialization failed\n", dev->name);
		return -1;
	}

	/* Put the analog decoder in standby to keep it quiet */
	cx23885_call_i2c_clients (&dev->i2c_bus[0], TUNER_SET_STANDBY, NULL);

	/* register everything */
	return videobuf_dvb_register(&port->dvb, THIS_MODULE, port, &dev->pci->dev);
}

int cx23885_dvb_register(struct cx23885_tsport *port)
{
	struct cx23885_dev *dev = port->dev;
	int err;

	dprintk( 1, "%s\n", __FUNCTION__);
	dprintk( 1, " ->being probed by Card=%d Name=%s, PCI %02x:%02x\n",
		dev->board,
		dev->name,
		dev->pci_bus,
		dev->pci_slot);

	err = -ENODEV;
	if (!(cx23885_boards[dev->board].portc & CX23885_MPEG_DVB))
		goto fail_core;

	/* dvb stuff */
	printk("%s: cx23885 based dvb card\n", dev->name);
	videobuf_queue_init(
		&port->dvb.dvbq,
		&dvb_qops,
		dev->pci,
		&port->slock,
		V4L2_BUF_TYPE_VIDEO_CAPTURE,
		V4L2_FIELD_TOP,
		sizeof(struct cx23885_buffer),
		port);
	err = dvb_register(port);
	if (err != 0)
		printk("%s() dvb_register failed err = %d\n", __FUNCTION__, err);

 fail_core:
	return err;
}

int cx23885_dvb_unregister(struct cx23885_tsport *port)
{
	/* dvb */
	if(port->dvb.frontend)
		videobuf_dvb_unregister(&port->dvb);

	return 0;
}