[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / media / dvb / bt8xx / bt878.c

/*
 * bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
 *
 * Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@htp-tel.de>
 *
 * large parts based on the bttv driver
 * Copyright (C) 1996,97,98 Ralph  Metzler (rjkm@metzlerbros.de)
 *                        & Marcus Metzler (mocm@metzlerbros.de)
 * (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
 *
 * 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
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/kernel.h>
#include <linux/pci.h>
#include <asm/io.h>
#include <linux/ioport.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/types.h>
#include <linux/interrupt.h>
#include <linux/kmod.h>
#include <linux/vmalloc.h>
#include <linux/init.h>

#include "dmxdev.h"
#include "dvbdev.h"
#include "bt878.h"
#include "dst_priv.h"


/**************************************/
/* Miscellaneous utility  definitions */
/**************************************/

static unsigned int bt878_verbose = 1;
static unsigned int bt878_debug;

module_param_named(verbose, bt878_verbose, int, 0444);
MODULE_PARM_DESC(verbose,
		 "verbose startup messages, default is 1 (yes)");
module_param_named(debug, bt878_debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off debugging, default is 0 (off).");

int bt878_num;
struct bt878 bt878[BT878_MAX];

EXPORT_SYMBOL(bt878_debug);
EXPORT_SYMBOL(bt878_verbose);
EXPORT_SYMBOL(bt878_num);
EXPORT_SYMBOL(bt878);

#define btwrite(dat,adr)    bmtwrite((dat), (bt->bt878_mem+(adr)))
#define btread(adr)         bmtread(bt->bt878_mem+(adr))

#define btand(dat,adr)      btwrite((dat) & btread(adr), adr)
#define btor(dat,adr)       btwrite((dat) | btread(adr), adr)
#define btaor(dat,mask,adr) btwrite((dat) | ((mask) & btread(adr)), adr)

#if defined(dprintk)
#undef dprintk
#endif
#define dprintk if(bt878_debug) printk

static void bt878_mem_free(struct bt878 *bt)
{
	if (bt->buf_cpu) {
		pci_free_consistent(bt->dev, bt->buf_size, bt->buf_cpu,
				    bt->buf_dma);
		bt->buf_cpu = NULL;
	}

	if (bt->risc_cpu) {
		pci_free_consistent(bt->dev, bt->risc_size, bt->risc_cpu,
				    bt->risc_dma);
		bt->risc_cpu = NULL;
	}
}

static int bt878_mem_alloc(struct bt878 *bt)
{
	if (!bt->buf_cpu) {
		bt->buf_size = 128 * 1024;

		bt->buf_cpu =
		    pci_alloc_consistent(bt->dev, bt->buf_size,
					 &bt->buf_dma);

		if (!bt->buf_cpu)
			return -ENOMEM;

		memset(bt->buf_cpu, 0, bt->buf_size);
	}

	if (!bt->risc_cpu) {
		bt->risc_size = PAGE_SIZE;
		bt->risc_cpu =
		    pci_alloc_consistent(bt->dev, bt->risc_size,
					 &bt->risc_dma);

		if (!bt->risc_cpu) {
			bt878_mem_free(bt);
			return -ENOMEM;
		}

		memset(bt->risc_cpu, 0, bt->risc_size);
	}

	return 0;
}

/* RISC instructions */
#define RISC_WRITE		(0x01 << 28)
#define RISC_JUMP		(0x07 << 28)
#define RISC_SYNC		(0x08 << 28)

/* RISC bits */
#define RISC_WR_SOL		(1 << 27)
#define RISC_WR_EOL		(1 << 26)
#define RISC_IRQ		(1 << 24)
#define RISC_STATUS(status)	((((~status) & 0x0F) << 20) | ((status & 0x0F) << 16))
#define RISC_SYNC_RESYNC	(1 << 15)
#define RISC_SYNC_FM1		0x06
#define RISC_SYNC_VRO		0x0C

#define RISC_FLUSH()		bt->risc_pos = 0
#define RISC_INSTR(instr)	bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)

static int bt878_make_risc(struct bt878 *bt)
{
	bt->block_bytes = bt->buf_size >> 4;
	bt->block_count = 1 << 4;
	bt->line_bytes = bt->block_bytes;
	bt->line_count = bt->block_count;

	while (bt->line_bytes > 4095) {
		bt->line_bytes >>= 1;
		bt->line_count <<= 1;
	}

	if (bt->line_count > 255) {
		printk("bt878: buffer size error!\n");
		return -EINVAL;
	}
	return 0;
}


static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin)
{
	u32 buf_pos = 0;
	u32 line;

	RISC_FLUSH();
	RISC_INSTR(RISC_SYNC | RISC_SYNC_FM1 | op_sync_orin);
	RISC_INSTR(0);

	dprintk("bt878: risc len lines %u, bytes per line %u\n",
			bt->line_count, bt->line_bytes);
	for (line = 0; line < bt->line_count; line++) {
		// At the beginning of every block we issue an IRQ with previous (finished) block number set
		if (!(buf_pos % bt->block_bytes))
			RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
				   RISC_IRQ |
				   RISC_STATUS(((buf_pos /
						 bt->block_bytes) +
						(bt->block_count -
						 1)) %
					       bt->block_count) | bt->
				   line_bytes);
		else
			RISC_INSTR(RISC_WRITE | RISC_WR_SOL | RISC_WR_EOL |
				   bt->line_bytes);
		RISC_INSTR(bt->buf_dma + buf_pos);
		buf_pos += bt->line_bytes;
	}

	RISC_INSTR(RISC_SYNC | op_sync_orin | RISC_SYNC_VRO);
	RISC_INSTR(0);

	RISC_INSTR(RISC_JUMP);
	RISC_INSTR(bt->risc_dma);

	btwrite((bt->line_count << 16) | bt->line_bytes, BT878_APACK_LEN);
}

/*****************************/
/* Start/Stop grabbing funcs */
/*****************************/

void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin,
		u32 irq_err_ignore)
{
	u32 int_mask;

	dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg);
	/* complete the writing of the risc dma program now we have
	 * the card specifics
	 */
	bt878_risc_program(bt, op_sync_orin);
	controlreg &= ~0x1f;
	controlreg |= 0x1b;

	btwrite(bt->risc_dma, BT878_ARISC_START);

	/* original int mask had :
	 *    6    2    8    4    0
	 * 1111 1111 1000 0000 0000
	 * SCERR|OCERR|PABORT|RIPERR|FDSR|FTRGT|FBUS|RISCI
	 * Hacked for DST to:
	 * SCERR | OCERR | FDSR | FTRGT | FBUS | RISCI
	 */
	int_mask = BT878_ASCERR | BT878_AOCERR | BT878_APABORT |
		BT878_ARIPERR | BT878_APPERR | BT878_AFDSR | BT878_AFTRGT |
		BT878_AFBUS | BT878_ARISCI;


	/* ignore pesky bits */
	int_mask &= ~irq_err_ignore;

	btwrite(int_mask, BT878_AINT_MASK);
	btwrite(controlreg, BT878_AGPIO_DMA_CTL);
}

void bt878_stop(struct bt878 *bt)
{
	u32 stat;
	int i = 0;

	dprintk("bt878 debug: bt878_stop\n");

	btwrite(0, BT878_AINT_MASK);
	btand(~0x13, BT878_AGPIO_DMA_CTL);

	do {
		stat = btread(BT878_AINT_STAT);
		if (!(stat & BT878_ARISC_EN))
			break;
		i++;
	} while (i < 500);

	dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n",
		bt->nr, i, stat);
}

EXPORT_SYMBOL(bt878_start);
EXPORT_SYMBOL(bt878_stop);

/*****************************/
/* Interrupt service routine */
/*****************************/

static irqreturn_t bt878_irq(int irq, void *dev_id, struct pt_regs *regs)
{
	u32 stat, astat, mask;
	int count;
	struct bt878 *bt;

	bt = (struct bt878 *) dev_id;

	count = 0;
	while (1) {
		stat = btread(BT878_AINT_STAT);
		mask = btread(BT878_AINT_MASK);
		if (!(astat = (stat & mask)))
			return IRQ_NONE;	/* this interrupt is not for me */
/*		dprintk("bt878(%d) debug: irq count %d, stat 0x%8.8x, mask 0x%8.8x\n",bt->nr,count,stat,mask); */
		btwrite(astat, BT878_AINT_STAT);	/* try to clear interupt condition */


		if (astat & (BT878_ASCERR | BT878_AOCERR)) {
			if (bt878_verbose) {
				printk("bt878(%d): irq%s%s risc_pc=%08x\n",
				       bt->nr,
				       (astat & BT878_ASCERR) ? " SCERR" :
				       "",
				       (astat & BT878_AOCERR) ? " OCERR" :
				       "", btread(BT878_ARISC_PC));
			}
		}
		if (astat & (BT878_APABORT | BT878_ARIPERR | BT878_APPERR)) {
			if (bt878_verbose) {
				printk
				    ("bt878(%d): irq%s%s%s risc_pc=%08x\n",
				     bt->nr,
				     (astat & BT878_APABORT) ? " PABORT" :
				     "",
				     (astat & BT878_ARIPERR) ? " RIPERR" :
				     "",
				     (astat & BT878_APPERR) ? " PPERR" :
				     "", btread(BT878_ARISC_PC));
			}
		}
		if (astat & (BT878_AFDSR | BT878_AFTRGT | BT878_AFBUS)) {
			if (bt878_verbose) {
				printk
				    ("bt878(%d): irq%s%s%s risc_pc=%08x\n",
				     bt->nr,
				     (astat & BT878_AFDSR) ? " FDSR" : "",
				     (astat & BT878_AFTRGT) ? " FTRGT" :
				     "",
				     (astat & BT878_AFBUS) ? " FBUS" : "",
				     btread(BT878_ARISC_PC));
			}
		}
		if (astat & BT878_ARISCI) {
			bt->finished_block = (stat & BT878_ARISCS) >> 28;
			tasklet_schedule(&bt->tasklet);
			break;
		}
		count++;
		if (count > 20) {
			btwrite(0, BT878_AINT_MASK);
			printk(KERN_ERR
			       "bt878(%d): IRQ lockup, cleared int mask\n",
			       bt->nr);
			break;
		}
	}
	return IRQ_HANDLED;
}

int
bt878_device_control(struct bt878 *bt, unsigned int cmd, union dst_gpio_packet *mp)
{
	int retval;

	retval = 0;
	if (down_interruptible (&bt->gpio_lock))
		return -ERESTARTSYS;
	/* special gpio signal */
	switch (cmd) {
	    case DST_IG_ENABLE:
		// dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable);
		retval = bttv_gpio_enable(bt->bttv_nr,
				mp->enb.mask,
				mp->enb.enable);
		break;
	    case DST_IG_WRITE:
		// dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals);
		retval = bttv_write_gpio(bt->bttv_nr,
				mp->outp.mask,
				mp->outp.highvals);

		break;
	    case DST_IG_READ:
		/* read */
		retval =  bttv_read_gpio(bt->bttv_nr, &mp->rd.value);
		// dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value);
		break;
	    case DST_IG_TS:
		/* Set packet size */
		bt->TS_Size = mp->psize;
		break;

	    default:
		retval = -EINVAL;
		break;
	}
	up(&bt->gpio_lock);
	return retval;
}

EXPORT_SYMBOL(bt878_device_control);


struct cards card_list[] __devinitdata = {

	{ 0x01010071, BTTV_BOARD_NEBULA_DIGITV,			"Nebula Electronics DigiTV" },
	{ 0x07611461, BTTV_BOARD_AVDVBT_761,			"AverMedia AverTV DVB-T 761" },
	{ 0x001c11bd, BTTV_BOARD_PINNACLESAT,			"Pinnacle PCTV Sat" },
	{ 0x002611bd, BTTV_BOARD_TWINHAN_DST,			"Pinnacle PCTV SAT CI" },
	{ 0x00011822, BTTV_BOARD_TWINHAN_DST,			"Twinhan VisionPlus DVB" },
	{ 0xfc00270f, BTTV_BOARD_TWINHAN_DST,			"ChainTech digitop DST-1000 DVB-S" },
	{ 0x07711461, BTTV_BOARD_AVDVBT_771,			"AVermedia AverTV DVB-T 771" },
	{ 0xdb1018ac, BTTV_BOARD_DVICO_DVBT_LITE,		"DViCO FusionHDTV DVB-T Lite" },
	{ 0xd50018ac, BTTV_BOARD_DVICO_FUSIONHDTV_5_LITE,	"DViCO FusionHDTV 5 Lite" },
	{ 0x20007063, BTTV_BOARD_PC_HDTV,			"pcHDTV HD-2000 TV"},
	{ 0, -1, NULL }
};


/***********************/
/* PCI device handling */
/***********************/

static int __devinit bt878_probe(struct pci_dev *dev,
				 const struct pci_device_id *pci_id)
{
	int result = 0, has_dvb = 0, i;
	unsigned char lat;
	struct bt878 *bt;
#if defined(__powerpc__)
	unsigned int cmd;
#endif
	unsigned int cardid;
	unsigned short id;
	struct cards *dvb_cards;

	printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
	       bt878_num);
	if (pci_enable_device(dev))
		return -EIO;

	pci_read_config_word(dev, PCI_SUBSYSTEM_ID, &id);
	cardid = id << 16;
	pci_read_config_word(dev, PCI_SUBSYSTEM_VENDOR_ID, &id);
	cardid |= id;

	for (i = 0, dvb_cards = card_list; i < ARRAY_SIZE(card_list); i++, dvb_cards++) {
		if (cardid == dvb_cards->pci_id) {
			printk("%s: card id=[0x%x],[ %s ] has DVB functions.\n",
				__func__, cardid, dvb_cards->name);
			has_dvb = 1;
		}
	}

	if (!has_dvb) {
		printk("%s: card id=[0x%x], Unknown card.\nExiting..\n", __func__, cardid);
		result = -EINVAL;

		goto fail0;
	}

	bt = &bt878[bt878_num];
	bt->dev = dev;
	bt->nr = bt878_num;
	bt->shutdown = 0;

	bt->id = dev->device;
	bt->irq = dev->irq;
	bt->bt878_adr = pci_resource_start(dev, 0);
	if (!request_mem_region(pci_resource_start(dev, 0),
				pci_resource_len(dev, 0), "bt878")) {
		result = -EBUSY;
		goto fail0;
	}

	pci_read_config_byte(dev, PCI_CLASS_REVISION, &bt->revision);
	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);


	printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ",
	       bt878_num, bt->id, bt->revision, dev->bus->number,
	       PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
	printk("irq: %d, latency: %d, memory: 0x%lx\n",
	       bt->irq, lat, bt->bt878_adr);


#if defined(__powerpc__)
	/* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
	/* response on cards with no firmware is not enabled by OF */
	pci_read_config_dword(dev, PCI_COMMAND, &cmd);
	cmd = (cmd | PCI_COMMAND_MEMORY);
	pci_write_config_dword(dev, PCI_COMMAND, cmd);
#endif

#ifdef __sparc__
	bt->bt878_mem = (unsigned char *) bt->bt878_adr;
#else
	bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
#endif

	/* clear interrupt mask */
	btwrite(0, BT848_INT_MASK);

	result = request_irq(bt->irq, bt878_irq,
			     SA_SHIRQ | SA_INTERRUPT, "bt878",
			     (void *) bt);
	if (result == -EINVAL) {
		printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
		       bt878_num);
		goto fail1;
	}
	if (result == -EBUSY) {
		printk(KERN_ERR
		       "bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
		       bt878_num, bt->irq);
		goto fail1;
	}
	if (result < 0)
		goto fail1;

	pci_set_master(dev);
	pci_set_drvdata(dev, bt);

/*        if(init_bt878(btv) < 0) {
		bt878_remove(dev);
		return -EIO;
	}
*/

	if ((result = bt878_mem_alloc(bt))) {
		printk("bt878: failed to allocate memory!\n");
		goto fail2;
	}

	bt878_make_risc(bt);
	btwrite(0, BT878_AINT_MASK);
	bt878_num++;

	return 0;

      fail2:
	free_irq(bt->irq, bt);
      fail1:
	release_mem_region(pci_resource_start(bt->dev, 0),
			   pci_resource_len(bt->dev, 0));
      fail0:
	pci_disable_device(dev);
	return result;
}

static void __devexit bt878_remove(struct pci_dev *pci_dev)
{
	u8 command;
	struct bt878 *bt = pci_get_drvdata(pci_dev);

	if (bt878_verbose)
		printk("bt878(%d): unloading\n", bt->nr);

	/* turn off all capturing, DMA and IRQs */
	btand(~0x13, BT878_AGPIO_DMA_CTL);

	/* first disable interrupts before unmapping the memory! */
	btwrite(0, BT878_AINT_MASK);
	btwrite(~0U, BT878_AINT_STAT);

	/* disable PCI bus-mastering */
	pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
	/* Should this be &=~ ?? */
	command &= ~PCI_COMMAND_MASTER;
	pci_write_config_byte(bt->dev, PCI_COMMAND, command);

	free_irq(bt->irq, bt);
	printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
	if (bt->bt878_mem)
		iounmap(bt->bt878_mem);

	release_mem_region(pci_resource_start(bt->dev, 0),
			   pci_resource_len(bt->dev, 0));
	/* wake up any waiting processes
	   because shutdown flag is set, no new processes (in this queue)
	   are expected
	 */
	bt->shutdown = 1;
	bt878_mem_free(bt);

	pci_set_drvdata(pci_dev, NULL);
	pci_disable_device(pci_dev);
	return;
}

static struct pci_device_id bt878_pci_tbl[] __devinitdata = {
	{PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BROOKTREE_878,
	 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
	{0,}
};

MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);

static struct pci_driver bt878_pci_driver = {
      .name	= "bt878",
      .id_table = bt878_pci_tbl,
      .probe	= bt878_probe,
      .remove	= bt878_remove,
};

static int bt878_pci_driver_registered;

/*******************************/
/* Module management functions */
/*******************************/

static int bt878_init_module(void)
{
	bt878_num = 0;
	bt878_pci_driver_registered = 0;

	printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
	       (BT878_VERSION_CODE >> 16) & 0xff,
	       (BT878_VERSION_CODE >> 8) & 0xff,
	       BT878_VERSION_CODE & 0xff);
/*
	bt878_check_chipset();
*/
	/* later we register inside of bt878_find_audio_dma()
	 * because we may want to ignore certain cards */
	bt878_pci_driver_registered = 1;
	return pci_register_driver(&bt878_pci_driver);
}

static void bt878_cleanup_module(void)
{
	if (bt878_pci_driver_registered) {
		bt878_pci_driver_registered = 0;
		pci_unregister_driver(&bt878_pci_driver);
	}
	return;
}

module_init(bt878_init_module);
module_exit(bt878_cleanup_module);

//MODULE_AUTHOR("XXX");
MODULE_LICENSE("GPL");

/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */
Commit	Line	Data
1da177e4 LT	1	/*
	2	* bt878.c: part of the driver for the Pinnacle PCTV Sat DVB PCI card
	3	*
a8d995c9	4	* Copyright (C) 2002 Peter Hettkamp <peter.hettkamp@htp-tel.de>
1da177e4 LT	5	*
1da177e4 LT	6	* large parts based on the bttv driver
50b215a0 JS	7	* Copyright (C) 1996,97,98 Ralph Metzler (rjkm@metzlerbros.de)
50b215a0 JS	8	* & Marcus Metzler (mocm@metzlerbros.de)
1da177e4 LT	9	* (c) 1999,2000 Gerd Knorr <kraxel@goldbach.in-berlin.de>
	10	*
	11	* This program is free software; you can redistribute it and/or
	12	* modify it under the terms of the GNU General Public License
	13	* as published by the Free Software Foundation; either version 2
	14	* of the License, or (at your option) any later version.
43f1a8f8	15	*
1da177e4 LT	16
	17	* This program is distributed in the hope that it will be useful,
	18	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	20	* GNU General Public License for more details.
43f1a8f8	21	*
1da177e4 LT	22
	23	* You should have received a copy of the GNU General Public License
	24	* along with this program; if not, write to the Free Software
	25	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	26	* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
43f1a8f8	27	*
1da177e4 LT	28	*/
	29
	30	#include <linux/module.h>
	31	#include <linux/moduleparam.h>
	32	#include <linux/kernel.h>
	33	#include <linux/pci.h>
	34	#include <asm/io.h>
	35	#include <linux/ioport.h>
	36	#include <asm/pgtable.h>
	37	#include <asm/page.h>
	38	#include <linux/types.h>
	39	#include <linux/interrupt.h>
	40	#include <linux/kmod.h>
	41	#include <linux/vmalloc.h>
	42	#include <linux/init.h>
	43
	44	#include "dmxdev.h"
	45	#include "dvbdev.h"
	46	#include "bt878.h"
	47	#include "dst_priv.h"
	48
	49
	50	/**************************************/
	51	/* Miscellaneous utility definitions */
	52	/**************************************/
	53
	54	static unsigned int bt878_verbose = 1;
	55	static unsigned int bt878_debug;
	56
	57	module_param_named(verbose, bt878_verbose, int, 0444);
	58	MODULE_PARM_DESC(verbose,
	59	"verbose startup messages, default is 1 (yes)");
	60	module_param_named(debug, bt878_debug, int, 0644);
43f1a8f8	61	MODULE_PARM_DESC(debug, "Turn on/off debugging, default is 0 (off).");
1da177e4 LT	62
	63	int bt878_num;
	64	struct bt878 bt878[BT878_MAX];
	65
	66	EXPORT_SYMBOL(bt878_debug);
	67	EXPORT_SYMBOL(bt878_verbose);
	68	EXPORT_SYMBOL(bt878_num);
	69	EXPORT_SYMBOL(bt878);
	70
	71	#define btwrite(dat,adr) bmtwrite((dat), (bt->bt878_mem+(adr)))
	72	#define btread(adr) bmtread(bt->bt878_mem+(adr))
	73
	74	#define btand(dat,adr) btwrite((dat) & btread(adr), adr)
	75	#define btor(dat,adr) btwrite((dat) \| btread(adr), adr)
	76	#define btaor(dat,mask,adr) btwrite((dat) \| ((mask) & btread(adr)), adr)
	77
	78	#if defined(dprintk)
	79	#undef dprintk
	80	#endif
	81	#define dprintk if(bt878_debug) printk
	82
	83	static void bt878_mem_free(struct bt878 *bt)
	84	{
	85	if (bt->buf_cpu) {
	86	pci_free_consistent(bt->dev, bt->buf_size, bt->buf_cpu,
	87	bt->buf_dma);
	88	bt->buf_cpu = NULL;
	89	}
	90
	91	if (bt->risc_cpu) {
	92	pci_free_consistent(bt->dev, bt->risc_size, bt->risc_cpu,
	93	bt->risc_dma);
	94	bt->risc_cpu = NULL;
	95	}
	96	}
	97
	98	static int bt878_mem_alloc(struct bt878 *bt)
	99	{
	100	if (!bt->buf_cpu) {
	101	bt->buf_size = 128 * 1024;
	102
	103	bt->buf_cpu =
	104	pci_alloc_consistent(bt->dev, bt->buf_size,
	105	&bt->buf_dma);
	106
	107	if (!bt->buf_cpu)
	108	return -ENOMEM;
	109
	110	memset(bt->buf_cpu, 0, bt->buf_size);
	111	}
	112
	113	if (!bt->risc_cpu) {
	114	bt->risc_size = PAGE_SIZE;
	115	bt->risc_cpu =
	116	pci_alloc_consistent(bt->dev, bt->risc_size,
	117	&bt->risc_dma);
	118
	119	if (!bt->risc_cpu) {
	120	bt878_mem_free(bt);
	121	return -ENOMEM;
	122	}
	123
	124	memset(bt->risc_cpu, 0, bt->risc_size);
	125	}
126
127	return 0;
128	}
129
130	/* RISC instructions */
43f1a8f8 JS	131	#define RISC_WRITE (0x01 << 28)
	132	#define RISC_JUMP (0x07 << 28)
	133	#define RISC_SYNC (0x08 << 28)
1da177e4 LT	134
1da177e4 LT	135	/* RISC bits */
43f1a8f8 JS	136	#define RISC_WR_SOL (1 << 27)
	137	#define RISC_WR_EOL (1 << 26)
	138	#define RISC_IRQ (1 << 24)
1da177e4	139	#define RISC_STATUS(status) ((((~status) & 0x0F) << 20) \| ((status & 0x0F) << 16))
43f1a8f8 JS	140	#define RISC_SYNC_RESYNC (1 << 15)
	141	#define RISC_SYNC_FM1 0x06
	142	#define RISC_SYNC_VRO 0x0C
1da177e4 LT	143
1da177e4 LT	144	#define RISC_FLUSH() bt->risc_pos = 0
43f1a8f8	145	#define RISC_INSTR(instr) bt->risc_cpu[bt->risc_pos++] = cpu_to_le32(instr)
1da177e4 LT	146
	147	static int bt878_make_risc(struct bt878 *bt)
	148	{
	149	bt->block_bytes = bt->buf_size >> 4;
	150	bt->block_count = 1 << 4;
	151	bt->line_bytes = bt->block_bytes;
	152	bt->line_count = bt->block_count;
	153
	154	while (bt->line_bytes > 4095) {
	155	bt->line_bytes >>= 1;
	156	bt->line_count <<= 1;
	157	}
	158
	159	if (bt->line_count > 255) {
	160	printk("bt878: buffer size error!\n");
	161	return -EINVAL;
	162	}
	163	return 0;
	164	}
	165
	166
	167	static void bt878_risc_program(struct bt878 *bt, u32 op_sync_orin)
	168	{
	169	u32 buf_pos = 0;
	170	u32 line;
	171
	172	RISC_FLUSH();
	173	RISC_INSTR(RISC_SYNC \| RISC_SYNC_FM1 \| op_sync_orin);
	174	RISC_INSTR(0);
	175
43f1a8f8	176	dprintk("bt878: risc len lines %u, bytes per line %u\n",
1da177e4 LT	177	bt->line_count, bt->line_bytes);
	178	for (line = 0; line < bt->line_count; line++) {
	179	// At the beginning of every block we issue an IRQ with previous (finished) block number set
	180	if (!(buf_pos % bt->block_bytes))
	181	RISC_INSTR(RISC_WRITE \| RISC_WR_SOL \| RISC_WR_EOL \|
	182	RISC_IRQ \|
	183	RISC_STATUS(((buf_pos /
	184	bt->block_bytes) +
	185	(bt->block_count -
	186	1)) %
	187	bt->block_count) \| bt->
	188	line_bytes);
	189	else
	190	RISC_INSTR(RISC_WRITE \| RISC_WR_SOL \| RISC_WR_EOL \|
	191	bt->line_bytes);
	192	RISC_INSTR(bt->buf_dma + buf_pos);
	193	buf_pos += bt->line_bytes;
	194	}
	195
	196	RISC_INSTR(RISC_SYNC \| op_sync_orin \| RISC_SYNC_VRO);
	197	RISC_INSTR(0);
	198
	199	RISC_INSTR(RISC_JUMP);
	200	RISC_INSTR(bt->risc_dma);
	201
	202	btwrite((bt->line_count << 16) \| bt->line_bytes, BT878_APACK_LEN);
	203	}
	204
	205	/*****************************/
	206	/* Start/Stop grabbing funcs */
	207	/*****************************/
	208
	209	void bt878_start(struct bt878 *bt, u32 controlreg, u32 op_sync_orin,
	210	u32 irq_err_ignore)
	211	{
	212	u32 int_mask;
	213
	214	dprintk("bt878 debug: bt878_start (ctl=%8.8x)\n", controlreg);
	215	/* complete the writing of the risc dma program now we have
	216	* the card specifics
	217	*/
	218	bt878_risc_program(bt, op_sync_orin);
	219	controlreg &= ~0x1f;
	220	controlreg \|= 0x1b;
	221
466d725a	222	btwrite(bt->risc_dma, BT878_ARISC_START);
1da177e4 LT	223
	224	/* original int mask had :
	225	* 6 2 8 4 0
	226	* 1111 1111 1000 0000 0000
	227	* SCERR\|OCERR\|PABORT\|RIPERR\|FDSR\|FTRGT\|FBUS\|RISCI
	228	* Hacked for DST to:
	229	* SCERR \| OCERR \| FDSR \| FTRGT \| FBUS \| RISCI
	230	*/
43f1a8f8 JS	231	int_mask = BT878_ASCERR \| BT878_AOCERR \| BT878_APABORT \|
43f1a8f8 JS	232	BT878_ARIPERR \| BT878_APPERR \| BT878_AFDSR \| BT878_AFTRGT \|
1da177e4 LT	233	BT878_AFBUS \| BT878_ARISCI;
	234
	235
	236	/* ignore pesky bits */
	237	int_mask &= ~irq_err_ignore;
43f1a8f8	238
1da177e4 LT	239	btwrite(int_mask, BT878_AINT_MASK);
	240	btwrite(controlreg, BT878_AGPIO_DMA_CTL);
	241	}
	242
	243	void bt878_stop(struct bt878 *bt)
	244	{
	245	u32 stat;
	246	int i = 0;
	247
	248	dprintk("bt878 debug: bt878_stop\n");
	249
	250	btwrite(0, BT878_AINT_MASK);
	251	btand(~0x13, BT878_AGPIO_DMA_CTL);
	252
	253	do {
	254	stat = btread(BT878_AINT_STAT);
	255	if (!(stat & BT878_ARISC_EN))
	256	break;
	257	i++;
	258	} while (i < 500);
	259
	260	dprintk("bt878(%d) debug: bt878_stop, i=%d, stat=0x%8.8x\n",
	261	bt->nr, i, stat);
	262	}
	263
	264	EXPORT_SYMBOL(bt878_start);
	265	EXPORT_SYMBOL(bt878_stop);
	266
	267	/*****************************/
	268	/* Interrupt service routine */
	269	/*****************************/
	270
	271	static irqreturn_t bt878_irq(int irq, void dev_id, struct pt_regs regs)
	272	{
	273	u32 stat, astat, mask;
	274	int count;
	275	struct bt878 *bt;
	276
	277	bt = (struct bt878 *) dev_id;
	278
	279	count = 0;
	280	while (1) {
	281	stat = btread(BT878_AINT_STAT);
	282	mask = btread(BT878_AINT_MASK);
	283	if (!(astat = (stat & mask)))
	284	return IRQ_NONE; /* this interrupt is not for me */
	285	/* dprintk("bt878(%d) debug: irq count %d, stat 0x%8.8x, mask 0x%8.8x\n",bt->nr,count,stat,mask); */
	286	btwrite(astat, BT878_AINT_STAT); /* try to clear interupt condition */
	287
	288
	289	if (astat & (BT878_ASCERR \| BT878_AOCERR)) {
	290	if (bt878_verbose) {
	291	printk("bt878(%d): irq%s%s risc_pc=%08x\n",
	292	bt->nr,
	293	(astat & BT878_ASCERR) ? " SCERR" :
	294	"",
	295	(astat & BT878_AOCERR) ? " OCERR" :
	296	"", btread(BT878_ARISC_PC));
	297	}
	298	}
	299	if (astat & (BT878_APABORT \| BT878_ARIPERR \| BT878_APPERR)) {
	300	if (bt878_verbose) {
	301	printk
	302	("bt878(%d): irq%s%s%s risc_pc=%08x\n",
303	bt->nr,
304	(astat & BT878_APABORT) ? " PABORT" :
305	"",
306	(astat & BT878_ARIPERR) ? " RIPERR" :
307	"",
308	(astat & BT878_APPERR) ? " PPERR" :
309	"", btread(BT878_ARISC_PC));
310	}
311	}
312	if (astat & (BT878_AFDSR \| BT878_AFTRGT \| BT878_AFBUS)) {
313	if (bt878_verbose) {
314	printk
315	("bt878(%d): irq%s%s%s risc_pc=%08x\n",
316	bt->nr,
317	(astat & BT878_AFDSR) ? " FDSR" : "",
318	(astat & BT878_AFTRGT) ? " FTRGT" :
319	"",
320	(astat & BT878_AFBUS) ? " FBUS" : "",
321	btread(BT878_ARISC_PC));
322	}
323	}
324	if (astat & BT878_ARISCI) {
325	bt->finished_block = (stat & BT878_ARISCS) >> 28;
326	tasklet_schedule(&bt->tasklet);
327	break;
328	}
329	count++;
330	if (count > 20) {
331	btwrite(0, BT878_AINT_MASK);
332	printk(KERN_ERR
333	"bt878(%d): IRQ lockup, cleared int mask\n",
334	bt->nr);
335	break;
336	}
337	}
338	return IRQ_HANDLED;
339	}
340
341	int
342	bt878_device_control(struct bt878 bt, unsigned int cmd, union dst_gpio_packet mp)
343	{
344	int retval;
345
346	retval = 0;
347	if (down_interruptible (&bt->gpio_lock))
348	return -ERESTARTSYS;
349	/* special gpio signal */
350	switch (cmd) {
351	case DST_IG_ENABLE:
352	// dprintk("dvb_bt8xx: dst enable mask 0x%02x enb 0x%02x \n", mp->dstg.enb.mask, mp->dstg.enb.enable);
353	retval = bttv_gpio_enable(bt->bttv_nr,
354	mp->enb.mask,
355	mp->enb.enable);
356	break;
357	case DST_IG_WRITE:
358	// dprintk("dvb_bt8xx: dst write gpio mask 0x%02x out 0x%02x\n", mp->dstg.outp.mask, mp->dstg.outp.highvals);
359	retval = bttv_write_gpio(bt->bttv_nr,
360	mp->outp.mask,
361	mp->outp.highvals);
362
363	break;
364	case DST_IG_READ:
365	/* read */
366	retval = bttv_read_gpio(bt->bttv_nr, &mp->rd.value);
367	// dprintk("dvb_bt8xx: dst read gpio 0x%02x\n", (unsigned)mp->dstg.rd.value);
368	break;
369	case DST_IG_TS:
370	/* Set packet size */
371	bt->TS_Size = mp->psize;
372	break;
373
374	default:
375	retval = -EINVAL;
376	break;
377	}
378	up(&bt->gpio_lock);
379	return retval;
380	}
381
382	EXPORT_SYMBOL(bt878_device_control);
383
6a5b28f9 MA	384
	385	struct cards card_list[] __devinitdata = {
	386
	387	{ 0x01010071, BTTV_BOARD_NEBULA_DIGITV, "Nebula Electronics DigiTV" },
	388	{ 0x07611461, BTTV_BOARD_AVDVBT_761, "AverMedia AverTV DVB-T 761" },
	389	{ 0x001c11bd, BTTV_BOARD_PINNACLESAT, "Pinnacle PCTV Sat" },
	390	{ 0x002611bd, BTTV_BOARD_TWINHAN_DST, "Pinnacle PCTV SAT CI" },
	391	{ 0x00011822, BTTV_BOARD_TWINHAN_DST, "Twinhan VisionPlus DVB" },
	392	{ 0xfc00270f, BTTV_BOARD_TWINHAN_DST, "ChainTech digitop DST-1000 DVB-S" },
	393	{ 0x07711461, BTTV_BOARD_AVDVBT_771, "AVermedia AverTV DVB-T 771" },
	394	{ 0xdb1018ac, BTTV_BOARD_DVICO_DVBT_LITE, "DViCO FusionHDTV DVB-T Lite" },
	395	{ 0xd50018ac, BTTV_BOARD_DVICO_FUSIONHDTV_5_LITE, "DViCO FusionHDTV 5 Lite" },
	396	{ 0x20007063, BTTV_BOARD_PC_HDTV, "pcHDTV HD-2000 TV"},
	397	{ 0, -1, NULL }
	398	};
	399
	400
1da177e4 LT	401	/***********************/
	402	/* PCI device handling */
	403	/***********************/
	404
	405	static int __devinit bt878_probe(struct pci_dev *dev,
	406	const struct pci_device_id *pci_id)
	407	{
6a5b28f9	408	int result = 0, has_dvb = 0, i;
1da177e4 LT	409	unsigned char lat;
	410	struct bt878 *bt;
	411	#if defined(__powerpc__)
	412	unsigned int cmd;
	413	#endif
6a5b28f9 MA	414	unsigned int cardid;
	415	unsigned short id;
	416	struct cards *dvb_cards;
1da177e4 LT	417
	418	printk(KERN_INFO "bt878: Bt878 AUDIO function found (%d).\n",
	419	bt878_num);
	420	if (pci_enable_device(dev))
	421	return -EIO;
	422
6a5b28f9 MA	423	pci_read_config_word(dev, PCI_SUBSYSTEM_ID, &id);
	424	cardid = id << 16;
	425	pci_read_config_word(dev, PCI_SUBSYSTEM_VENDOR_ID, &id);
	426	cardid \|= id;
	427
	428	for (i = 0, dvb_cards = card_list; i < ARRAY_SIZE(card_list); i++, dvb_cards++) {
	429	if (cardid == dvb_cards->pci_id) {
	430	printk("%s: card id=[0x%x],[ %s ] has DVB functions.\n",
	431	__func__, cardid, dvb_cards->name);
	432	has_dvb = 1;
	433	}
	434	}
	435
	436	if (!has_dvb) {
	437	printk("%s: card id=[0x%x], Unknown card.\nExiting..\n", __func__, cardid);
	438	result = -EINVAL;
	439
	440	goto fail0;
	441	}
	442
1da177e4 LT	443	bt = &bt878[bt878_num];
	444	bt->dev = dev;
	445	bt->nr = bt878_num;
	446	bt->shutdown = 0;
	447
	448	bt->id = dev->device;
	449	bt->irq = dev->irq;
	450	bt->bt878_adr = pci_resource_start(dev, 0);
	451	if (!request_mem_region(pci_resource_start(dev, 0),
	452	pci_resource_len(dev, 0), "bt878")) {
	453	result = -EBUSY;
	454	goto fail0;
	455	}
	456
	457	pci_read_config_byte(dev, PCI_CLASS_REVISION, &bt->revision);
	458	pci_read_config_byte(dev, PCI_LATENCY_TIMER, &lat);
6a5b28f9 MA	459
6a5b28f9 MA	460
1da177e4 LT	461	printk(KERN_INFO "bt878(%d): Bt%x (rev %d) at %02x:%02x.%x, ",
	462	bt878_num, bt->id, bt->revision, dev->bus->number,
	463	PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
	464	printk("irq: %d, latency: %d, memory: 0x%lx\n",
	465	bt->irq, lat, bt->bt878_adr);
	466
	467
	468	#if defined(__powerpc__)
	469	/* on OpenFirmware machines (PowerMac at least), PCI memory cycle */
	470	/* response on cards with no firmware is not enabled by OF */
	471	pci_read_config_dword(dev, PCI_COMMAND, &cmd);
	472	cmd = (cmd \| PCI_COMMAND_MEMORY);
	473	pci_write_config_dword(dev, PCI_COMMAND, cmd);
	474	#endif
	475
	476	#ifdef __sparc__
	477	bt->bt878_mem = (unsigned char *) bt->bt878_adr;
	478	#else
	479	bt->bt878_mem = ioremap(bt->bt878_adr, 0x1000);
	480	#endif
	481
	482	/* clear interrupt mask */
	483	btwrite(0, BT848_INT_MASK);
	484
	485	result = request_irq(bt->irq, bt878_irq,
	486	SA_SHIRQ \| SA_INTERRUPT, "bt878",
	487	(void *) bt);
	488	if (result == -EINVAL) {
	489	printk(KERN_ERR "bt878(%d): Bad irq number or handler\n",
	490	bt878_num);
	491	goto fail1;
	492	}
	493	if (result == -EBUSY) {
	494	printk(KERN_ERR
	495	"bt878(%d): IRQ %d busy, change your PnP config in BIOS\n",
	496	bt878_num, bt->irq);
	497	goto fail1;
	498	}
	499	if (result < 0)
	500	goto fail1;
	501
	502	pci_set_master(dev);
	503	pci_set_drvdata(dev, bt);
	504
	505	/* if(init_bt878(btv) < 0) {
50b215a0 JS	506	bt878_remove(dev);
	507	return -EIO;
	508	}
1da177e4 LT	509	*/
	510
	511	if ((result = bt878_mem_alloc(bt))) {
	512	printk("bt878: failed to allocate memory!\n");
	513	goto fail2;
	514	}
	515
	516	bt878_make_risc(bt);
	517	btwrite(0, BT878_AINT_MASK);
	518	bt878_num++;
	519
	520	return 0;
	521
	522	fail2:
	523	free_irq(bt->irq, bt);
	524	fail1:
	525	release_mem_region(pci_resource_start(bt->dev, 0),
	526	pci_resource_len(bt->dev, 0));
	527	fail0:
	528	pci_disable_device(dev);
	529	return result;
	530	}
	531
	532	static void __devexit bt878_remove(struct pci_dev *pci_dev)
	533	{
	534	u8 command;
	535	struct bt878 *bt = pci_get_drvdata(pci_dev);
	536
	537	if (bt878_verbose)
	538	printk("bt878(%d): unloading\n", bt->nr);
	539
	540	/* turn off all capturing, DMA and IRQs */
	541	btand(~0x13, BT878_AGPIO_DMA_CTL);
	542
	543	/* first disable interrupts before unmapping the memory! */
	544	btwrite(0, BT878_AINT_MASK);
	545	btwrite(~0U, BT878_AINT_STAT);
	546
	547	/* disable PCI bus-mastering */
	548	pci_read_config_byte(bt->dev, PCI_COMMAND, &command);
	549	/* Should this be &=~ ?? */
	550	command &= ~PCI_COMMAND_MASTER;
	551	pci_write_config_byte(bt->dev, PCI_COMMAND, command);
	552
	553	free_irq(bt->irq, bt);
	554	printk(KERN_DEBUG "bt878_mem: 0x%p.\n", bt->bt878_mem);
	555	if (bt->bt878_mem)
	556	iounmap(bt->bt878_mem);
	557
	558	release_mem_region(pci_resource_start(bt->dev, 0),
	559	pci_resource_len(bt->dev, 0));
	560	/* wake up any waiting processes
	561	because shutdown flag is set, no new processes (in this queue)
	562	are expected
	563	*/
	564	bt->shutdown = 1;
	565	bt878_mem_free(bt);
	566
	567	pci_set_drvdata(pci_dev, NULL);
	568	pci_disable_device(pci_dev);
	569	return;
	570	}
	571
	572	static struct pci_device_id bt878_pci_tbl[] __devinitdata = {
573	{PCI_VENDOR_ID_BROOKTREE, PCI_DEVICE_ID_BROOKTREE_878,
574	PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
575	{0,}
576	};
577
578	MODULE_DEVICE_TABLE(pci, bt878_pci_tbl);
579
580	static struct pci_driver bt878_pci_driver = {
50b215a0	581	.name = "bt878",
1da177e4	582	.id_table = bt878_pci_tbl,
50b215a0 JS	583	.probe = bt878_probe,
50b215a0 JS	584	.remove = bt878_remove,
1da177e4 LT	585	};
1da177e4 LT	586
a5ed425c	587	static int bt878_pci_driver_registered;
1da177e4 LT	588
	589	/*******************************/
	590	/* Module management functions */
	591	/*******************************/
	592
	593	static int bt878_init_module(void)
	594	{
	595	bt878_num = 0;
	596	bt878_pci_driver_registered = 0;
	597
	598	printk(KERN_INFO "bt878: AUDIO driver version %d.%d.%d loaded\n",
	599	(BT878_VERSION_CODE >> 16) & 0xff,
	600	(BT878_VERSION_CODE >> 8) & 0xff,
	601	BT878_VERSION_CODE & 0xff);
	602	/*
50b215a0	603	bt878_check_chipset();
1da177e4 LT	604	*/
	605	/* later we register inside of bt878_find_audio_dma()
	606	* because we may want to ignore certain cards */
	607	bt878_pci_driver_registered = 1;
	608	return pci_register_driver(&bt878_pci_driver);
	609	}
	610
	611	static void bt878_cleanup_module(void)
	612	{
	613	if (bt878_pci_driver_registered) {
	614	bt878_pci_driver_registered = 0;
	615	pci_unregister_driver(&bt878_pci_driver);
	616	}
	617	return;
	618	}
	619
	620	module_init(bt878_init_module);
	621	module_exit(bt878_cleanup_module);
	622
	623	//MODULE_AUTHOR("XXX");
	624	MODULE_LICENSE("GPL");
	625
	626	/*
	627	* Local variables:
	628	* c-basic-offset: 8
	629	* End:
	630	*/