[net-next-2.6.git] / drivers / media / dvb / ttpci / budget-core.c

/*
 * budget-core.c: driver for the SAA7146 based Budget DVB cards
 *
 * Compiled from various sources by Michael Hunold <michael@mihu.de>
 *
 * Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
 *
 * Copyright (C) 1999-2002 Ralph  Metzler
 *			 & Marcus Metzler for convergence integrated media GmbH
 *
 * 26feb2004 Support for FS Activy Card (Grundig tuner) by
 *	     Michael Dreher <michael@5dot1.de>,
 *	     Oliver Endriss <o.endriss@gmx.de>,
 *	     Andreas 'randy' Weinberger
 *
 * 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/ 
 */


#include "budget.h"
#include "ttpci-eeprom.h"

#define TS_WIDTH		(2 * TS_SIZE)
#define TS_WIDTH_ACTIVY		TS_SIZE
#define TS_WIDTH_DVBC		TS_SIZE
#define TS_HEIGHT_MASK		0xf00
#define TS_HEIGHT_MASK_ACTIVY	0xc00
#define TS_HEIGHT_MASK_DVBC	0xe00
#define TS_MIN_BUFSIZE_K	188
#define TS_MAX_BUFSIZE_K	1410
#define TS_MAX_BUFSIZE_K_ACTIVY	564
#define TS_MAX_BUFSIZE_K_DVBC	1316
#define BUFFER_WARNING_WAIT	(30*HZ)

int budget_debug;
static int dma_buffer_size = TS_MIN_BUFSIZE_K;
module_param_named(debug, budget_debug, int, 0644);
module_param_named(bufsize, dma_buffer_size, int, 0444);
MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");

/****************************************************************************
 * TT budget / WinTV Nova
 ****************************************************************************/

static int stop_ts_capture(struct budget *budget)
{
	dprintk(2, "budget: %p\n", budget);

	saa7146_write(budget->dev, MC1, MASK_20);	// DMA3 off
	SAA7146_IER_DISABLE(budget->dev, MASK_10);
	return 0;
}

static int start_ts_capture(struct budget *budget)
{
	struct saa7146_dev *dev = budget->dev;

	dprintk(2, "budget: %p\n", budget);

	if (!budget->feeding || !budget->fe_synced)
		return 0;

	saa7146_write(dev, MC1, MASK_20);	// DMA3 off

	memset(budget->grabbing, 0x00, budget->buffer_size);

	saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));

	budget->ttbp = 0;

	/*
	 *  Signal path on the Activy:
	 *
	 *  tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
	 *
	 *  Since the tuner feeds 204 bytes packets into the SAA7146,
	 *  DMA3 is configured to strip the trailing 16 FEC bytes:
	 *      Pitch: 188, NumBytes3: 188, NumLines3: 1024
	 */

	switch(budget->card->type) {
	case BUDGET_FS_ACTIVY:
		saa7146_write(dev, DD1_INIT, 0x04000000);
		saa7146_write(dev, MC2, (MASK_09 | MASK_25));
		saa7146_write(dev, BRS_CTRL, 0x00000000);
		break;
	case BUDGET_PATCH:
		saa7146_write(dev, DD1_INIT, 0x00000200);
		saa7146_write(dev, MC2, (MASK_10 | MASK_26));
		saa7146_write(dev, BRS_CTRL, 0x60000000);
		break;
	case BUDGET_CIN1200C_MK3:
	case BUDGET_KNC1C_MK3:
	case BUDGET_KNC1CP_MK3:
		if (budget->video_port == BUDGET_VIDEO_PORTA) {
			saa7146_write(dev, DD1_INIT, 0x06000200);
			saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
			saa7146_write(dev, BRS_CTRL, 0x00000000);
		} else {
			saa7146_write(dev, DD1_INIT, 0x00000600);
			saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
			saa7146_write(dev, BRS_CTRL, 0x60000000);
		}
		break;
	default:
		if (budget->video_port == BUDGET_VIDEO_PORTA) {
			saa7146_write(dev, DD1_INIT, 0x06000200);
			saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
			saa7146_write(dev, BRS_CTRL, 0x00000000);
		} else {
			saa7146_write(dev, DD1_INIT, 0x02000600);
			saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));
			saa7146_write(dev, BRS_CTRL, 0x60000000);
		}
	}

	saa7146_write(dev, MC2, (MASK_08 | MASK_24));
	mdelay(10);

	saa7146_write(dev, BASE_ODD3, 0);
	if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {
		// using odd/even buffers
		saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);
	} else {
		// using a single buffer
		saa7146_write(dev, BASE_EVEN3, 0);
	}
	saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
	saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);

	saa7146_write(dev, PITCH3, budget->buffer_width);
	saa7146_write(dev, NUM_LINE_BYTE3,
			(budget->buffer_height << 16) | budget->buffer_width);

	saa7146_write(dev, MC2, (MASK_04 | MASK_20));

	SAA7146_ISR_CLEAR(budget->dev, MASK_10);	/* VPE */
	SAA7146_IER_ENABLE(budget->dev, MASK_10);	/* VPE */
	saa7146_write(dev, MC1, (MASK_04 | MASK_20));	/* DMA3 on */

	return 0;
}

static int budget_read_fe_status(struct dvb_frontend *fe, fe_status_t *status)
{
	struct budget *budget = (struct budget *) fe->dvb->priv;
	int synced;
	int ret;

	if (budget->read_fe_status)
		ret = budget->read_fe_status(fe, status);
	else
		ret = -EINVAL;

	if (!ret) {
		synced = (*status & FE_HAS_LOCK);
		if (synced != budget->fe_synced) {
			budget->fe_synced = synced;
			spin_lock(&budget->feedlock);
			if (synced)
				start_ts_capture(budget);
			else
				stop_ts_capture(budget);
			spin_unlock(&budget->feedlock);
		}
	}
	return ret;
}

static void vpeirq(unsigned long data)
{
	struct budget *budget = (struct budget *) data;
	u8 *mem = (u8 *) (budget->grabbing);
	u32 olddma = budget->ttbp;
	u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
	u32 count;

	/* Ensure streamed PCI data is synced to CPU */
	pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE);

	/* nearest lower position divisible by 188 */
	newdma -= newdma % 188;

	if (newdma >= budget->buffer_size)
		return;

	budget->ttbp = newdma;

	if (budget->feeding == 0 || newdma == olddma)
		return;

	if (newdma > olddma) {	/* no wraparound, dump olddma..newdma */
		count = newdma - olddma;
		dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
	} else {		/* wraparound, dump olddma..buflen and 0..newdma */
		count = budget->buffer_size - olddma;
		dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
		count += newdma;
		dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
	}

	if (count > budget->buffer_warning_threshold)
		budget->buffer_warnings++;

	if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
		printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
			budget->dev->name, __func__, budget->buffer_warnings, count);
		budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
		budget->buffer_warnings = 0;
	}
}


int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
			  int uselocks, int nobusyloop)
{
	struct saa7146_dev *saa = budget->dev;
	int result = 0;
	unsigned long flags = 0;

	if (count > 4 || count <= 0)
		return 0;

	if (uselocks)
		spin_lock_irqsave(&budget->debilock, flags);

	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
		if (uselocks)
			spin_unlock_irqrestore(&budget->debilock, flags);
		return result;
	}

	saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x10000 | (addr & 0xffff));
	saa7146_write(saa, DEBI_CONFIG, config);
	saa7146_write(saa, DEBI_PAGE, 0);
	saa7146_write(saa, MC2, (2 << 16) | 2);

	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
		if (uselocks)
			spin_unlock_irqrestore(&budget->debilock, flags);
		return result;
	}

	result = saa7146_read(saa, DEBI_AD);
	result &= (0xffffffffUL >> ((4 - count) * 8));

	if (uselocks)
		spin_unlock_irqrestore(&budget->debilock, flags);

	return result;
}

int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
			   int count, u32 value, int uselocks, int nobusyloop)
{
	struct saa7146_dev *saa = budget->dev;
	unsigned long flags = 0;
	int result;

	if (count > 4 || count <= 0)
		return 0;

	if (uselocks)
		spin_lock_irqsave(&budget->debilock, flags);

	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
		if (uselocks)
			spin_unlock_irqrestore(&budget->debilock, flags);
		return result;
	}

	saa7146_write(saa, DEBI_COMMAND, (count << 17) | 0x00000 | (addr & 0xffff));
	saa7146_write(saa, DEBI_CONFIG, config);
	saa7146_write(saa, DEBI_PAGE, 0);
	saa7146_write(saa, DEBI_AD, value);
	saa7146_write(saa, MC2, (2 << 16) | 2);

	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
		if (uselocks)
			spin_unlock_irqrestore(&budget->debilock, flags);
		return result;
	}

	if (uselocks)
		spin_unlock_irqrestore(&budget->debilock, flags);
	return 0;
}


/****************************************************************************
 * DVB API SECTION
 ****************************************************************************/

static int budget_start_feed(struct dvb_demux_feed *feed)
{
	struct dvb_demux *demux = feed->demux;
	struct budget *budget = (struct budget *) demux->priv;
	int status = 0;

	dprintk(2, "budget: %p\n", budget);

	if (!demux->dmx.frontend)
		return -EINVAL;

	spin_lock(&budget->feedlock);
	feed->pusi_seen = 0; /* have a clean section start */
	if (budget->feeding++ == 0)
		status = start_ts_capture(budget);
	spin_unlock(&budget->feedlock);
	return status;
}

static int budget_stop_feed(struct dvb_demux_feed *feed)
{
	struct dvb_demux *demux = feed->demux;
	struct budget *budget = (struct budget *) demux->priv;
	int status = 0;

	dprintk(2, "budget: %p\n", budget);

	spin_lock(&budget->feedlock);
	if (--budget->feeding == 0)
		status = stop_ts_capture(budget);
	spin_unlock(&budget->feedlock);
	return status;
}

static int budget_register(struct budget *budget)
{
	struct dvb_demux *dvbdemux = &budget->demux;
	int ret;

	dprintk(2, "budget: %p\n", budget);

	dvbdemux->priv = (void *) budget;

	dvbdemux->filternum = 256;
	dvbdemux->feednum = 256;
	dvbdemux->start_feed = budget_start_feed;
	dvbdemux->stop_feed = budget_stop_feed;
	dvbdemux->write_to_decoder = NULL;

	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING |
				      DMX_MEMORY_BASED_FILTERING);

	dvb_dmx_init(&budget->demux);

	budget->dmxdev.filternum = 256;
	budget->dmxdev.demux = &dvbdemux->dmx;
	budget->dmxdev.capabilities = 0;

	dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);

	budget->hw_frontend.source = DMX_FRONTEND_0;

	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);

	if (ret < 0)
		return ret;

	budget->mem_frontend.source = DMX_MEMORY_FE;
	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
	if (ret < 0)
		return ret;

	ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
	if (ret < 0)
		return ret;

	dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);

	return 0;
}

static void budget_unregister(struct budget *budget)
{
	struct dvb_demux *dvbdemux = &budget->demux;

	dprintk(2, "budget: %p\n", budget);

	dvb_net_release(&budget->dvb_net);

	dvbdemux->dmx.close(&dvbdemux->dmx);
	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);

	dvb_dmxdev_release(&budget->dmxdev);
	dvb_dmx_release(&budget->demux);
}

int ttpci_budget_init(struct budget *budget, struct saa7146_dev *dev,
		      struct saa7146_pci_extension_data *info,
		      struct module *owner, short *adapter_nums)
{
	int ret = 0;
	struct budget_info *bi = info->ext_priv;
	int max_bufsize;
	int height_mask;

	memset(budget, 0, sizeof(struct budget));

	dprintk(2, "dev: %p, budget: %p\n", dev, budget);

	budget->card = bi;
	budget->dev = (struct saa7146_dev *) dev;

	switch(budget->card->type) {
	case BUDGET_FS_ACTIVY:
		budget->buffer_width = TS_WIDTH_ACTIVY;
		max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
		height_mask = TS_HEIGHT_MASK_ACTIVY;
		break;

	case BUDGET_KNC1C:
	case BUDGET_KNC1CP:
	case BUDGET_CIN1200C:
	case BUDGET_KNC1C_MK3:
	case BUDGET_KNC1CP_MK3:
	case BUDGET_CIN1200C_MK3:
		budget->buffer_width = TS_WIDTH_DVBC;
		max_bufsize = TS_MAX_BUFSIZE_K_DVBC;
		height_mask = TS_HEIGHT_MASK_DVBC;
		break;

	default:
		budget->buffer_width = TS_WIDTH;
		max_bufsize = TS_MAX_BUFSIZE_K;
		height_mask = TS_HEIGHT_MASK;
	}

	if (dma_buffer_size < TS_MIN_BUFSIZE_K)
		dma_buffer_size = TS_MIN_BUFSIZE_K;
	else if (dma_buffer_size > max_bufsize)
		dma_buffer_size = max_bufsize;

	budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
	if (budget->buffer_height > 0xfff) {
		budget->buffer_height /= 2;
		budget->buffer_height &= height_mask;
		budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;
	} else {
		budget->buffer_height &= height_mask;
		budget->buffer_size = budget->buffer_height * budget->buffer_width;
	}
	budget->buffer_warning_threshold = budget->buffer_size * 80/100;
	budget->buffer_warnings = 0;
	budget->buffer_warning_time = jiffies;

	dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n",
		budget->dev->name,
		budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",
		budget->buffer_width, budget->buffer_height);
	printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);

	ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name,
				   owner, &budget->dev->pci->dev, adapter_nums);
	if (ret < 0)
		return ret;

	/* set dd1 stream a & b */
	saa7146_write(dev, DD1_STREAM_B, 0x00000000);
	saa7146_write(dev, MC2, (MASK_09 | MASK_25));
	saa7146_write(dev, MC2, (MASK_10 | MASK_26));
	saa7146_write(dev, DD1_INIT, 0x02000000);
	saa7146_write(dev, MC2, (MASK_09 | MASK_25 | MASK_10 | MASK_26));

	if (bi->type != BUDGET_FS_ACTIVY)
		budget->video_port = BUDGET_VIDEO_PORTB;
	else
		budget->video_port = BUDGET_VIDEO_PORTA;
	spin_lock_init(&budget->feedlock);
	spin_lock_init(&budget->debilock);

	/* the Siemens DVB needs this if you want to have the i2c chips
	   get recognized before the main driver is loaded */
	if (bi->type != BUDGET_FS_ACTIVY)
		saa7146_write(dev, GPIO_CTRL, 0x500000);	/* GPIO 3 = 1 */

	strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));

	saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
	strcpy(budget->i2c_adap.name, budget->card->name);

	if (i2c_add_adapter(&budget->i2c_adap) < 0) {
		ret = -ENOMEM;
		goto err_dvb_unregister;
	}

	ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);

	budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt);
	if (NULL == budget->grabbing) {
		ret = -ENOMEM;
		goto err_del_i2c;
	}

	saa7146_write(dev, PCI_BT_V1, 0x001c0000);
	/* upload all */
	saa7146_write(dev, GPIO_CTRL, 0x000000);

	tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);

	/* frontend power on */
	if (bi->type != BUDGET_FS_ACTIVY)
		saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);

	if ((ret = budget_register(budget)) == 0)
		return 0; /* Everything OK */

	/* An error occurred, cleanup resources */
	saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);

err_del_i2c:
	i2c_del_adapter(&budget->i2c_adap);

err_dvb_unregister:
	dvb_unregister_adapter(&budget->dvb_adapter);

	return ret;
}

void ttpci_budget_init_hooks(struct budget *budget)
{
	if (budget->dvb_frontend && !budget->read_fe_status) {
		budget->read_fe_status = budget->dvb_frontend->ops.read_status;
		budget->dvb_frontend->ops.read_status = budget_read_fe_status;
	}
}

int ttpci_budget_deinit(struct budget *budget)
{
	struct saa7146_dev *dev = budget->dev;

	dprintk(2, "budget: %p\n", budget);

	budget_unregister(budget);

	tasklet_kill(&budget->vpe_tasklet);

	saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);

	i2c_del_adapter(&budget->i2c_adap);

	dvb_unregister_adapter(&budget->dvb_adapter);

	return 0;
}

void ttpci_budget_irq10_handler(struct saa7146_dev *dev, u32 * isr)
{
	struct budget *budget = (struct budget *) dev->ext_priv;

	dprintk(8, "dev: %p, budget: %p\n", dev, budget);

	if (*isr & MASK_10)
		tasklet_schedule(&budget->vpe_tasklet);
}

void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
{
	struct budget *budget = (struct budget *) dev->ext_priv;

	spin_lock(&budget->feedlock);
	budget->video_port = video_port;
	if (budget->feeding) {
		stop_ts_capture(budget);
		start_ts_capture(budget);
	}
	spin_unlock(&budget->feedlock);
}

EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
EXPORT_SYMBOL_GPL(ttpci_budget_init);
EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
EXPORT_SYMBOL_GPL(budget_debug);

MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* budget-core.c: driver for the SAA7146 based Budget DVB cards
	3	*
	4	* Compiled from various sources by Michael Hunold <michael@mihu.de>
	5	*
	6	* Copyright (C) 2002 Ralph Metzler <rjkm@metzlerbros.de>
	7	*
	8	* Copyright (C) 1999-2002 Ralph Metzler
	9	* & Marcus Metzler for convergence integrated media GmbH
	10	*
	11	* 26feb2004 Support for FS Activy Card (Grundig tuner) by
	12	* Michael Dreher <michael@5dot1.de>,
	13	* Oliver Endriss <o.endriss@gmx.de>,
	14	* Andreas 'randy' Weinberger
	15	*
	16	* This program is free software; you can redistribute it and/or
	17	* modify it under the terms of the GNU General Public License
	18	* as published by the Free Software Foundation; either version 2
	19	* of the License, or (at your option) any later version.
	20	*
	21	*
	22	* This program is distributed in the hope that it will be useful,
	23	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	24	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	25	* GNU General Public License for more details.
	26	*
	27	*
	28	* You should have received a copy of the GNU General Public License
	29	* along with this program; if not, write to the Free Software
	30	* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
	31	* Or, point your browser to http://www.gnu.org/copyleft/gpl.html
	32	*
	33	*
631dd1a8	34	* the project's page is at http://www.linuxtv.org/
1da177e4 LT	35	*/
1da177e4 LT	36
1da177e4 LT	37
	38	#include "budget.h"
	39	#include "ttpci-eeprom.h"
	40
afa47abf IS	41	#define TS_WIDTH (2 * TS_SIZE)
afa47abf IS	42	#define TS_WIDTH_ACTIVY TS_SIZE
fd9c66e2	43	#define TS_WIDTH_DVBC TS_SIZE
afa47abf IS	44	#define TS_HEIGHT_MASK 0xf00
afa47abf IS	45	#define TS_HEIGHT_MASK_ACTIVY 0xc00
fd9c66e2	46	#define TS_HEIGHT_MASK_DVBC 0xe00
afa47abf IS	47	#define TS_MIN_BUFSIZE_K 188
	48	#define TS_MAX_BUFSIZE_K 1410
	49	#define TS_MAX_BUFSIZE_K_ACTIVY 564
fd9c66e2	50	#define TS_MAX_BUFSIZE_K_DVBC 1316
afa47abf IS	51	#define BUFFER_WARNING_WAIT (30*HZ)
afa47abf IS	52
1da177e4	53	int budget_debug;
afa47abf	54	static int dma_buffer_size = TS_MIN_BUFSIZE_K;
1da177e4	55	module_param_named(debug, budget_debug, int, 0644);
afa47abf	56	module_param_named(bufsize, dma_buffer_size, int, 0444);
1da177e4	57	MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
afa47abf	58	MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
1da177e4 LT	59
	60	/****************************************************************************
	61	* TT budget / WinTV Nova
	62	****************************************************************************/
	63
	64	static int stop_ts_capture(struct budget *budget)
	65	{
	66	dprintk(2, "budget: %p\n", budget);
	67
1da177e4 LT	68	saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off
	69	SAA7146_IER_DISABLE(budget->dev, MASK_10);
	70	return 0;
	71	}
	72
	73	static int start_ts_capture(struct budget *budget)
	74	{
	75	struct saa7146_dev *dev = budget->dev;
	76
	77	dprintk(2, "budget: %p\n", budget);
	78
32e4c3a5 OE	79	if (!budget->feeding \|\| !budget->fe_synced)
32e4c3a5 OE	80	return 0;
1da177e4 LT	81
	82	saa7146_write(dev, MC1, MASK_20); // DMA3 off
	83
afa47abf	84	memset(budget->grabbing, 0x00, budget->buffer_size);
1da177e4 LT	85
	86	saa7146_write(dev, PCI_BT_V1, 0x001c0000 \| (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
	87
1da177e4 LT	88	budget->ttbp = 0;
	89
	90	/*
	91	* Signal path on the Activy:
	92	*
	93	* tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
	94	*
	95	* Since the tuner feeds 204 bytes packets into the SAA7146,
	96	* DMA3 is configured to strip the trailing 16 FEC bytes:
	97	* Pitch: 188, NumBytes3: 188, NumLines3: 1024
	98	*/
	99
9101e622	100	switch(budget->card->type) {
1da177e4 LT	101	case BUDGET_FS_ACTIVY:
	102	saa7146_write(dev, DD1_INIT, 0x04000000);
	103	saa7146_write(dev, MC2, (MASK_09 \| MASK_25));
	104	saa7146_write(dev, BRS_CTRL, 0x00000000);
	105	break;
	106	case BUDGET_PATCH:
	107	saa7146_write(dev, DD1_INIT, 0x00000200);
	108	saa7146_write(dev, MC2, (MASK_10 \| MASK_26));
	109	saa7146_write(dev, BRS_CTRL, 0x60000000);
	110	break;
aa323ac8 HB	111	case BUDGET_CIN1200C_MK3:
	112	case BUDGET_KNC1C_MK3:
	113	case BUDGET_KNC1CP_MK3:
	114	if (budget->video_port == BUDGET_VIDEO_PORTA) {
	115	saa7146_write(dev, DD1_INIT, 0x06000200);
	116	saa7146_write(dev, MC2, (MASK_09 \| MASK_25 \| MASK_10 \| MASK_26));
	117	saa7146_write(dev, BRS_CTRL, 0x00000000);
	118	} else {
	119	saa7146_write(dev, DD1_INIT, 0x00000600);
	120	saa7146_write(dev, MC2, (MASK_09 \| MASK_25 \| MASK_10 \| MASK_26));
	121	saa7146_write(dev, BRS_CTRL, 0x60000000);
	122	}
	123	break;
1da177e4 LT	124	default:
	125	if (budget->video_port == BUDGET_VIDEO_PORTA) {
	126	saa7146_write(dev, DD1_INIT, 0x06000200);
	127	saa7146_write(dev, MC2, (MASK_09 \| MASK_25 \| MASK_10 \| MASK_26));
	128	saa7146_write(dev, BRS_CTRL, 0x00000000);
	129	} else {
	130	saa7146_write(dev, DD1_INIT, 0x02000600);
	131	saa7146_write(dev, MC2, (MASK_09 \| MASK_25 \| MASK_10 \| MASK_26));
	132	saa7146_write(dev, BRS_CTRL, 0x60000000);
	133	}
	134	}
	135
	136	saa7146_write(dev, MC2, (MASK_08 \| MASK_24));
	137	mdelay(10);
	138
	139	saa7146_write(dev, BASE_ODD3, 0);
fd9c66e2 HB	140	if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {
	141	// using odd/even buffers
	142	saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);
	143	} else {
	144	// using a single buffer
	145	saa7146_write(dev, BASE_EVEN3, 0);
	146	}
afa47abf	147	saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
1da177e4 LT	148	saa7146_write(dev, BASE_PAGE3, budget->pt.dma \| ME1 \| 0x90);
1da177e4 LT	149
afa47abf IS	150	saa7146_write(dev, PITCH3, budget->buffer_width);
	151	saa7146_write(dev, NUM_LINE_BYTE3,
	152	(budget->buffer_height << 16) \| budget->buffer_width);
1da177e4 LT	153
	154	saa7146_write(dev, MC2, (MASK_04 \| MASK_20));
	155
	156	SAA7146_ISR_CLEAR(budget->dev, MASK_10); /* VPE */
	157	SAA7146_IER_ENABLE(budget->dev, MASK_10); /* VPE */
	158	saa7146_write(dev, MC1, (MASK_04 \| MASK_20)); /* DMA3 on */
	159
32e4c3a5 OE	160	return 0;
	161	}
	162
	163	static int budget_read_fe_status(struct dvb_frontend fe, fe_status_t status)
	164	{
	165	struct budget budget = (struct budget ) fe->dvb->priv;
	166	int synced;
	167	int ret;
	168
	169	if (budget->read_fe_status)
	170	ret = budget->read_fe_status(fe, status);
	171	else
	172	ret = -EINVAL;
	173
	174	if (!ret) {
	175	synced = (*status & FE_HAS_LOCK);
	176	if (synced != budget->fe_synced) {
	177	budget->fe_synced = synced;
	178	spin_lock(&budget->feedlock);
	179	if (synced)
	180	start_ts_capture(budget);
	181	else
	182	stop_ts_capture(budget);
	183	spin_unlock(&budget->feedlock);
	184	}
	185	}
	186	return ret;
1da177e4 LT	187	}
	188
	189	static void vpeirq(unsigned long data)
	190	{
	191	struct budget budget = (struct budget ) data;
	192	u8 mem = (u8 ) (budget->grabbing);
	193	u32 olddma = budget->ttbp;
	194	u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
afa47abf	195	u32 count;
1da177e4	196
87c3019d JB	197	/* Ensure streamed PCI data is synced to CPU */
	198	pci_dma_sync_sg_for_cpu(budget->dev->pci, budget->pt.slist, budget->pt.nents, PCI_DMA_FROMDEVICE);
	199
1da177e4 LT	200	/* nearest lower position divisible by 188 */
	201	newdma -= newdma % 188;
	202
afa47abf	203	if (newdma >= budget->buffer_size)
1da177e4 LT	204	return;
	205
	206	budget->ttbp = newdma;
	207
	208	if (budget->feeding == 0 \|\| newdma == olddma)
	209	return;
	210
	211	if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
afa47abf IS	212	count = newdma - olddma;
afa47abf IS	213	dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
1da177e4	214	} else { /* wraparound, dump olddma..buflen and 0..newdma */
afa47abf IS	215	count = budget->buffer_size - olddma;
	216	dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
	217	count += newdma;
1da177e4 LT	218	dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
1da177e4 LT	219	}
afa47abf IS	220
	221	if (count > budget->buffer_warning_threshold)
	222	budget->buffer_warnings++;
	223
	224	if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
	225	printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
3ca7fc84	226	budget->dev->name, __func__, budget->buffer_warnings, count);
afa47abf IS	227	budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
	228	budget->buffer_warnings = 0;
	229	}
1da177e4 LT	230	}
	231
	232
	233	int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
	234	int uselocks, int nobusyloop)
	235	{
	236	struct saa7146_dev *saa = budget->dev;
	237	int result = 0;
	238	unsigned long flags = 0;
	239
	240	if (count > 4 \|\| count <= 0)
	241	return 0;
	242
	243	if (uselocks)
	244	spin_lock_irqsave(&budget->debilock, flags);
	245
	246	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
	247	if (uselocks)
	248	spin_unlock_irqrestore(&budget->debilock, flags);
	249	return result;
	250	}
	251
	252	saa7146_write(saa, DEBI_COMMAND, (count << 17) \| 0x10000 \| (addr & 0xffff));
	253	saa7146_write(saa, DEBI_CONFIG, config);
	254	saa7146_write(saa, DEBI_PAGE, 0);
	255	saa7146_write(saa, MC2, (2 << 16) \| 2);
	256
	257	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
	258	if (uselocks)
	259	spin_unlock_irqrestore(&budget->debilock, flags);
	260	return result;
	261	}
	262
	263	result = saa7146_read(saa, DEBI_AD);
	264	result &= (0xffffffffUL >> ((4 - count) * 8));
	265
	266	if (uselocks)
	267	spin_unlock_irqrestore(&budget->debilock, flags);
	268
	269	return result;
	270	}
	271
	272	int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
	273	int count, u32 value, int uselocks, int nobusyloop)
	274	{
	275	struct saa7146_dev *saa = budget->dev;
	276	unsigned long flags = 0;
	277	int result;
	278
	279	if (count > 4 \|\| count <= 0)
	280	return 0;
	281
	282	if (uselocks)
	283	spin_lock_irqsave(&budget->debilock, flags);
	284
	285	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
	286	if (uselocks)
	287	spin_unlock_irqrestore(&budget->debilock, flags);
	288	return result;
	289	}
	290
	291	saa7146_write(saa, DEBI_COMMAND, (count << 17) \| 0x00000 \| (addr & 0xffff));
	292	saa7146_write(saa, DEBI_CONFIG, config);
	293	saa7146_write(saa, DEBI_PAGE, 0);
294	saa7146_write(saa, DEBI_AD, value);
295	saa7146_write(saa, MC2, (2 << 16) \| 2);
296
297	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
298	if (uselocks)
299	spin_unlock_irqrestore(&budget->debilock, flags);
300	return result;
301	}
302
303	if (uselocks)
304	spin_unlock_irqrestore(&budget->debilock, flags);
305	return 0;
306	}
307
308
309	/****************************************************************************
310	* DVB API SECTION
311	****************************************************************************/
312
313	static int budget_start_feed(struct dvb_demux_feed *feed)
314	{
315	struct dvb_demux *demux = feed->demux;
316	struct budget budget = (struct budget ) demux->priv;
32e4c3a5	317	int status = 0;
1da177e4 LT	318
	319	dprintk(2, "budget: %p\n", budget);
	320
	321	if (!demux->dmx.frontend)
	322	return -EINVAL;
	323
	324	spin_lock(&budget->feedlock);
	325	feed->pusi_seen = 0; /* have a clean section start */
32e4c3a5 OE	326	if (budget->feeding++ == 0)
32e4c3a5 OE	327	status = start_ts_capture(budget);
1da177e4 LT	328	spin_unlock(&budget->feedlock);
	329	return status;
	330	}
	331
	332	static int budget_stop_feed(struct dvb_demux_feed *feed)
	333	{
	334	struct dvb_demux *demux = feed->demux;
	335	struct budget budget = (struct budget ) demux->priv;
32e4c3a5	336	int status = 0;
1da177e4 LT	337
	338	dprintk(2, "budget: %p\n", budget);
	339
	340	spin_lock(&budget->feedlock);
32e4c3a5 OE	341	if (--budget->feeding == 0)
32e4c3a5 OE	342	status = stop_ts_capture(budget);
1da177e4 LT	343	spin_unlock(&budget->feedlock);
	344	return status;
	345	}
	346
	347	static int budget_register(struct budget *budget)
	348	{
	349	struct dvb_demux *dvbdemux = &budget->demux;
	350	int ret;
	351
	352	dprintk(2, "budget: %p\n", budget);
	353
	354	dvbdemux->priv = (void *) budget;
	355
	356	dvbdemux->filternum = 256;
	357	dvbdemux->feednum = 256;
	358	dvbdemux->start_feed = budget_start_feed;
	359	dvbdemux->stop_feed = budget_stop_feed;
	360	dvbdemux->write_to_decoder = NULL;
	361
	362	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING \| DMX_SECTION_FILTERING \|
	363	DMX_MEMORY_BASED_FILTERING);
	364
	365	dvb_dmx_init(&budget->demux);
	366
	367	budget->dmxdev.filternum = 256;
	368	budget->dmxdev.demux = &dvbdemux->dmx;
	369	budget->dmxdev.capabilities = 0;
	370
fdc53a6d	371	dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
1da177e4 LT	372
	373	budget->hw_frontend.source = DMX_FRONTEND_0;
	374
	375	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
	376
	377	if (ret < 0)
	378	return ret;
	379
	380	budget->mem_frontend.source = DMX_MEMORY_FE;
	381	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
	382	if (ret < 0)
	383	return ret;
	384
	385	ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
	386	if (ret < 0)
	387	return ret;
	388
fdc53a6d	389	dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
1da177e4 LT	390
	391	return 0;
	392	}
	393
	394	static void budget_unregister(struct budget *budget)
	395	{
	396	struct dvb_demux *dvbdemux = &budget->demux;
	397
	398	dprintk(2, "budget: %p\n", budget);
	399
	400	dvb_net_release(&budget->dvb_net);
	401
	402	dvbdemux->dmx.close(&dvbdemux->dmx);
	403	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
	404	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
	405
	406	dvb_dmxdev_release(&budget->dmxdev);
	407	dvb_dmx_release(&budget->demux);
	408	}
	409
	410	int ttpci_budget_init(struct budget budget, struct saa7146_dev dev,
	411	struct saa7146_pci_extension_data *info,
26dc4d04	412	struct module owner, short adapter_nums)
1da177e4	413	{
1da177e4 LT	414	int ret = 0;
1da177e4 LT	415	struct budget_info *bi = info->ext_priv;
afa47abf IS	416	int max_bufsize;
afa47abf IS	417	int height_mask;
1da177e4 LT	418
	419	memset(budget, 0, sizeof(struct budget));
	420
	421	dprintk(2, "dev: %p, budget: %p\n", dev, budget);
	422
	423	budget->card = bi;
	424	budget->dev = (struct saa7146_dev *) dev;
	425
fd9c66e2 HB	426	switch(budget->card->type) {
fd9c66e2 HB	427	case BUDGET_FS_ACTIVY:
afa47abf IS	428	budget->buffer_width = TS_WIDTH_ACTIVY;
	429	max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
	430	height_mask = TS_HEIGHT_MASK_ACTIVY;
fd9c66e2 HB	431	break;
	432
	433	case BUDGET_KNC1C:
	434	case BUDGET_KNC1CP:
	435	case BUDGET_CIN1200C:
aa323ac8 HB	436	case BUDGET_KNC1C_MK3:
	437	case BUDGET_KNC1CP_MK3:
	438	case BUDGET_CIN1200C_MK3:
fd9c66e2 HB	439	budget->buffer_width = TS_WIDTH_DVBC;
	440	max_bufsize = TS_MAX_BUFSIZE_K_DVBC;
	441	height_mask = TS_HEIGHT_MASK_DVBC;
	442	break;
	443
	444	default:
afa47abf IS	445	budget->buffer_width = TS_WIDTH;
	446	max_bufsize = TS_MAX_BUFSIZE_K;
	447	height_mask = TS_HEIGHT_MASK;
	448	}
	449
	450	if (dma_buffer_size < TS_MIN_BUFSIZE_K)
	451	dma_buffer_size = TS_MIN_BUFSIZE_K;
	452	else if (dma_buffer_size > max_bufsize)
	453	dma_buffer_size = max_bufsize;
	454
	455	budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
fd9c66e2 HB	456	if (budget->buffer_height > 0xfff) {
	457	budget->buffer_height /= 2;
	458	budget->buffer_height &= height_mask;
	459	budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;
	460	} else {
	461	budget->buffer_height &= height_mask;
	462	budget->buffer_size = budget->buffer_height * budget->buffer_width;
	463	}
afa47abf IS	464	budget->buffer_warning_threshold = budget->buffer_size * 80/100;
	465	budget->buffer_warnings = 0;
	466	budget->buffer_warning_time = jiffies;
	467
fd9c66e2 HB	468	dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n",
	469	budget->dev->name,
	470	budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",
	471	budget->buffer_width, budget->buffer_height);
afa47abf IS	472	printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
afa47abf IS	473
78e92006	474	ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name,
26dc4d04	475	owner, &budget->dev->pci->dev, adapter_nums);
78e92006	476	if (ret < 0)
dcdda65f	477	return ret;
1da177e4 LT	478
	479	/* set dd1 stream a & b */
	480	saa7146_write(dev, DD1_STREAM_B, 0x00000000);
	481	saa7146_write(dev, MC2, (MASK_09 \| MASK_25));
	482	saa7146_write(dev, MC2, (MASK_10 \| MASK_26));
	483	saa7146_write(dev, DD1_INIT, 0x02000000);
	484	saa7146_write(dev, MC2, (MASK_09 \| MASK_25 \| MASK_10 \| MASK_26));
	485
	486	if (bi->type != BUDGET_FS_ACTIVY)
	487	budget->video_port = BUDGET_VIDEO_PORTB;
	488	else
	489	budget->video_port = BUDGET_VIDEO_PORTA;
	490	spin_lock_init(&budget->feedlock);
	491	spin_lock_init(&budget->debilock);
	492
	493	/* the Siemens DVB needs this if you want to have the i2c chips
	494	get recognized before the main driver is loaded */
	495	if (bi->type != BUDGET_FS_ACTIVY)
	496	saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */
	497
1da177e4 LT	498	strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
	499
	500	saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
	501	strcpy(budget->i2c_adap.name, budget->card->name);
	502
	503	if (i2c_add_adapter(&budget->i2c_adap) < 0) {
87c3019d JB	504	ret = -ENOMEM;
87c3019d JB	505	goto err_dvb_unregister;
1da177e4 LT	506	}
1da177e4 LT	507
fdc53a6d	508	ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
1da177e4	509
87c3019d JB	510	budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt);
87c3019d JB	511	if (NULL == budget->grabbing) {
1da177e4	512	ret = -ENOMEM;
87c3019d	513	goto err_del_i2c;
1da177e4 LT	514	}
	515
	516	saa7146_write(dev, PCI_BT_V1, 0x001c0000);
	517	/* upload all */
	518	saa7146_write(dev, GPIO_CTRL, 0x000000);
	519
	520	tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
	521
	522	/* frontend power on */
f49cc15b	523	if (bi->type != BUDGET_FS_ACTIVY)
1da177e4 LT	524	saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
1da177e4 LT	525
1fb4a17f	526	if ((ret = budget_register(budget)) == 0)
87c3019d JB	527	return 0; /* Everything OK */
	528
	529	/* An error occurred, cleanup resources */
	530	saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
1da177e4	531
87c3019d JB	532	err_del_i2c:
87c3019d JB	533	i2c_del_adapter(&budget->i2c_adap);
1da177e4	534
87c3019d	535	err_dvb_unregister:
fdc53a6d	536	dvb_unregister_adapter(&budget->dvb_adapter);
1da177e4 LT	537
	538	return ret;
	539	}
	540
32e4c3a5 OE	541	void ttpci_budget_init_hooks(struct budget *budget)
	542	{
	543	if (budget->dvb_frontend && !budget->read_fe_status) {
	544	budget->read_fe_status = budget->dvb_frontend->ops.read_status;
	545	budget->dvb_frontend->ops.read_status = budget_read_fe_status;
	546	}
	547	}
	548
1da177e4 LT	549	int ttpci_budget_deinit(struct budget *budget)
	550	{
	551	struct saa7146_dev *dev = budget->dev;
	552
	553	dprintk(2, "budget: %p\n", budget);
	554
	555	budget_unregister(budget);
	556
1da177e4 LT	557	tasklet_kill(&budget->vpe_tasklet);
1da177e4 LT	558
87c3019d	559	saa7146_vfree_destroy_pgtable(dev->pci, budget->grabbing, &budget->pt);
1da177e4	560
87c3019d JB	561	i2c_del_adapter(&budget->i2c_adap);
	562
	563	dvb_unregister_adapter(&budget->dvb_adapter);
1da177e4 LT	564
	565	return 0;
	566	}
	567
	568	void ttpci_budget_irq10_handler(struct saa7146_dev dev, u32 isr)
	569	{
	570	struct budget budget = (struct budget ) dev->ext_priv;
	571
	572	dprintk(8, "dev: %p, budget: %p\n", dev, budget);
	573
	574	if (*isr & MASK_10)
	575	tasklet_schedule(&budget->vpe_tasklet);
	576	}
	577
	578	void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
	579	{
	580	struct budget budget = (struct budget ) dev->ext_priv;
	581
	582	spin_lock(&budget->feedlock);
	583	budget->video_port = video_port;
	584	if (budget->feeding) {
1da177e4 LT	585	stop_ts_capture(budget);
1da177e4 LT	586	start_ts_capture(budget);
1da177e4 LT	587	}
	588	spin_unlock(&budget->feedlock);
	589	}
	590
	591	EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
	592	EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
	593	EXPORT_SYMBOL_GPL(ttpci_budget_init);
32e4c3a5	594	EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
1da177e4 LT	595	EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
	596	EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
	597	EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
	598	EXPORT_SYMBOL_GPL(budget_debug);
	599
	600	MODULE_LICENSE("GPL");