cx88-dvb.c

h内核

/*
 * $Id: cx88-dvb.c,v 1.19 2004/11/07 14:44:59 kraxel Exp $
 *
 * device driver for Conexant 2388x based TV cards
 * MPEG Transport Stream (DVB) routines
 *
 * (c) 2004 Chris Pascoe <[e-mail]>
 * (c) 2004 Gerd Knorr <[e-mail]> [SuSE Labs]
 *
 *  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 "cx88.h"
#include "cx22702.h"
#include "mt352.h"
#include "mt352_priv.h" /* FIXME */

MODULE_DESCRIPTION("driver for cx2388x based DVB cards");
MODULE_AUTHOR("Chris Pascoe <[e-mail]>");
MODULE_AUTHOR("Gerd Knorr <[e-mail]> [SuSE Labs]");
MODULE_LICENSE("GPL");

static unsigned int debug = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug,"enable debug messages [dvb]");

#define dprintk(level,fmt, arg...)	if (debug >= level) \
	printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->core->name , ## arg)

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

static int dvb_buf_setup(struct videobuf_queue *q,
			 unsigned int *count, unsigned int *size)
{
	struct cx8802_dev *dev = q->priv_data;

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

	*size  = dev->ts_packet_size * dev->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 cx8802_dev *dev = q->priv_data;
	return cx8802_buf_prepare(dev, (struct cx88_buffer*)vb);
}

static void dvb_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
	struct cx8802_dev *dev = q->priv_data;
	cx8802_buf_queue(dev, (struct cx88_buffer*)vb);
}

static void dvb_buf_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
{
	struct cx8802_dev *dev = q->priv_data;
	cx88_free_buffer(dev->pci, (struct cx88_buffer*)vb);
}

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 int dvico_fusionhdtv_demod_init(struct dvb_frontend* fe)
{
	static u8 clock_config []  = { CLOCK_CTL,  0x38, 0x39 };
	static u8 reset []         = { RESET,      0x80 };
	static u8 adc_ctl_1_cfg [] = { ADC_CTL_1,  0x40 };
	static u8 agc_cfg []       = { AGC_TARGET, 0x24, 0x20 };
	static u8 gpp_ctl_cfg []   = { GPP_CTL,    0x33 };
	static u8 capt_range_cfg[] = { CAPT_RANGE, 0x32 };

	mt352_write(fe, clock_config,   sizeof(clock_config));
	udelay(200);
	mt352_write(fe, reset,          sizeof(reset));
	mt352_write(fe, adc_ctl_1_cfg,  sizeof(adc_ctl_1_cfg));

	mt352_write(fe, agc_cfg,        sizeof(agc_cfg));
	mt352_write(fe, gpp_ctl_cfg,    sizeof(gpp_ctl_cfg));
	mt352_write(fe, capt_range_cfg, sizeof(capt_range_cfg));
	return 0;
}

#define IF_FREQUENCYx6 217    /* 6 * 36.16666666667MHz */

static int lg_z201_pll_set(struct dvb_frontend* fe,
			   struct dvb_frontend_parameters* params, u8* pllbuf)
{
	u32 div;
	unsigned char cp = 0;
	unsigned char bs = 0;

	div = (((params->frequency + 83333) * 3) / 500000) + IF_FREQUENCYx6;

	if (params->frequency < 542000000) cp = 0xbc;
	else if (params->frequency < 830000000) cp = 0xf4;
	else cp = 0xfc;

	if (params->frequency == 0) bs = 0x03;
	else if (params->frequency < 157500000) bs = 0x01;
	else if (params->frequency < 443250000) bs = 0x02;
	else bs = 0x04;

	pllbuf[0] = 0xC2; /* Note: non-linux standard PLL I2C address */
	pllbuf[1] = div >> 8;
	pllbuf[2] = div & 0xff;
	pllbuf[3] = cp;
	pllbuf[4] = bs;

	return 0;
}

static int thomson_dtt7579_pll_set(struct dvb_frontend* fe,
				   struct dvb_frontend_parameters* params,
				   u8* pllbuf)
{
	u32 div;
	unsigned char cp = 0;
	unsigned char bs = 0;

	div = (((params->frequency + 83333) * 3) / 500000) + IF_FREQUENCYx6;

	if (params->frequency < 542000000) cp = 0xb4;
	else if (params->frequency < 771000000) cp = 0xbc;
	else cp = 0xf4;

        if (params->frequency == 0) bs = 0x03;
	else if (params->frequency < 443250000) bs = 0x02;
	else bs = 0x08;

	pllbuf[0] = 0xc0; // Note: non-linux standard PLL i2c address
	pllbuf[1] = div >> 8;
   	pllbuf[2] = div & 0xff;
   	pllbuf[3] = cp;
   	pllbuf[4] = bs;

	return 0;
}

struct mt352_config dvico_fusionhdtv_dvbt1 = {
	.demod_address = 0x0F,
	.demod_init    = dvico_fusionhdtv_demod_init,
	.pll_set       = lg_z201_pll_set,
};

struct mt352_config dvico_fusionhdtv_dvbt_plus = {
	.demod_address = 0x0F,
	.demod_init    = dvico_fusionhdtv_demod_init,
	.pll_set       = thomson_dtt7579_pll_set,
};

static int dvb_register(struct cx8802_dev *dev)
{
	/* init struct videobuf_dvb */
	dev->dvb.name = dev->core->name;

	/* init frontend */
	switch (dev->core->board) {
	case CX88_BOARD_HAUPPAUGE_DVB_T1:
	case CX88_BOARD_CONEXANT_DVB_T1:
		dev->dvb.frontend = cx22702_create(&dev->core->i2c_adap,
						   dev->core->pll_addr,
						   dev->core->pll_type,
						   dev->core->demod_addr);
		break;
	case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T1:
		dev->dvb.frontend = mt352_attach(&dvico_fusionhdtv_dvbt1,
						 &dev->core->i2c_adap);
		if (dev->dvb.frontend) {
			dev->dvb.frontend->ops->info.frequency_min = 174000000;
			dev->dvb.frontend->ops->info.frequency_max = 862000000;
		}
		break;
	case CX88_BOARD_DVICO_FUSIONHDTV_DVB_T_PLUS:
		dev->dvb.frontend = mt352_attach(&dvico_fusionhdtv_dvbt_plus,
						 &dev->core->i2c_adap);
		if (dev->dvb.frontend) {
			dev->dvb.frontend->ops->info.frequency_min = 174000000;
			dev->dvb.frontend->ops->info.frequency_max = 862000000;
		}
		break;
	default:
		printk("%s: FIXME: frontend handling not here yet ...\n",
		       dev->core->name);
		break;
	}
	if (NULL == dev->dvb.frontend)
		return -1;

	/* Copy the board name into the DVB structure */
	strlcpy(dev->dvb.frontend->ops->info.name,
		cx88_boards[dev->core->board].name,
		sizeof(dev->dvb.frontend->ops->info.name));

	/* register everything */
	return videobuf_dvb_register(&dev->dvb);
}

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

static int __devinit dvb_probe(struct pci_dev *pci_dev,
			       const struct pci_device_id *pci_id)
{
	struct cx8802_dev *dev;
	struct cx88_core  *core;
	int err;

	/* general setup */
	core = cx88_core_get(pci_dev);
	if (NULL == core)
		return -EINVAL;

	err = -ENODEV;
	if (!cx88_boards[core->board].dvb)
		goto fail_core;

	err = -ENOMEM;
	dev = kmalloc(sizeof(*dev),GFP_KERNEL);
	if (NULL == dev)
		goto fail_core;
	memset(dev,0,sizeof(*dev));
	dev->pci = pci_dev;
	dev->core = core;

	err = cx8802_init_common(dev);
	if (0 != err)
		goto fail_free;

	/* dvb stuff */
	printk("%s/2: cx2388x based dvb card\n", core->name);
	videobuf_queue_init(&dev->dvb.dvbq, &dvb_qops,
			    dev->pci, &dev->slock,
			    V4L2_BUF_TYPE_VIDEO_CAPTURE,
			    V4L2_FIELD_TOP,
			    sizeof(struct cx88_buffer),
			    dev);
	err = dvb_register(dev);
	if (0 != err)
		goto fail_free;
	return 0;

 fail_free:
	kfree(dev);
 fail_core:
	cx88_core_put(core,pci_dev);
	return err;
}

static void __devexit dvb_remove(struct pci_dev *pci_dev)
{
        struct cx8802_dev *dev = pci_get_drvdata(pci_dev);

	/* dvb */
	videobuf_dvb_unregister(&dev->dvb);

	/* common */
	cx8802_fini_common(dev);
	cx88_core_put(dev->core,dev->pci);
	kfree(dev);
}

static struct pci_device_id cx8802_pci_tbl[] = {
	{
		.vendor       = 0x14f1,
		.device       = 0x8802,
                .subvendor    = PCI_ANY_ID,
                .subdevice    = PCI_ANY_ID,
	},{
		/* --- end of list --- */
	}
};
MODULE_DEVICE_TABLE(pci, cx8802_pci_tbl);

static struct pci_driver dvb_pci_driver = {
        .name     = "cx88-dvb",
        .id_table = cx8802_pci_tbl,
        .probe    = dvb_probe,
        .remove   = __devexit_p(dvb_remove),
	.suspend  = cx8802_suspend_common,
	.resume   = cx8802_resume_common,
};

static int dvb_init(void)
{
	printk(KERN_INFO "cx2388x dvb driver version %d.%d.%d loaded\n",
	       (CX88_VERSION_CODE >> 16) & 0xff,
	       (CX88_VERSION_CODE >>  8) & 0xff,
	       CX88_VERSION_CODE & 0xff);
#ifdef SNAPSHOT
	printk(KERN_INFO "cx2388x: snapshot date %04d-%02d-%02d\n",
	       SNAPSHOT/10000, (SNAPSHOT/100)%100, SNAPSHOT%100);
#endif
	return pci_module_init(&dvb_pci_driver);
}

static void dvb_fini(void)
{
	pci_unregister_driver(&dvb_pci_driver);
}

module_init(dvb_init);
module_exit(dvb_fini);

/*
 * Local variables:
 * c-basic-offset: 8
 * compile-command: "make DVB=1"
 * End:
 */