[mirror_ubuntu-zesty-kernel.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/dvb/
 */

#include <linux/moduleparam.h>

#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;
	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;

	/* 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, __FUNCTION__, 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)
{
	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:
		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);

	if ((ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name, owner, &budget->dev->pci->dev)) < 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 */

#ifdef I2C_ADAP_CLASS_TV_DIGITAL
	budget->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL;
#else
	budget->i2c_adap.class = I2C_CLASS_TV_DIGITAL;
#endif

	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) {
		dvb_unregister_adapter(&budget->dvb_adapter);
		return -ENOMEM;
	}

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

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

	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 (budget_register(budget) == 0) {
		return 0;
	}
err:
	i2c_del_adapter(&budget->i2c_adap);

	vfree(budget->grabbing);

	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);

	i2c_del_adapter(&budget->i2c_adap);

	dvb_unregister_adapter(&budget->dvb_adapter);

	tasklet_kill(&budget->vpe_tasklet);

	saa7146_pgtable_free(dev->pci, &budget->pt);

	vfree(budget->grabbing);

	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	*
	34	* the project's page is at http://www.linuxtv.org/dvb/
	35	*/
	36
	37	#include <linux/moduleparam.h>
	38
	39	#include "budget.h"
	40	#include "ttpci-eeprom.h"
	41
afa47abf IS	42	#define TS_WIDTH (2 * TS_SIZE)
afa47abf IS	43	#define TS_WIDTH_ACTIVY TS_SIZE
fd9c66e2	44	#define TS_WIDTH_DVBC TS_SIZE
afa47abf IS	45	#define TS_HEIGHT_MASK 0xf00
afa47abf IS	46	#define TS_HEIGHT_MASK_ACTIVY 0xc00
fd9c66e2	47	#define TS_HEIGHT_MASK_DVBC 0xe00
afa47abf IS	48	#define TS_MIN_BUFSIZE_K 188
	49	#define TS_MAX_BUFSIZE_K 1410
	50	#define TS_MAX_BUFSIZE_K_ACTIVY 564
fd9c66e2	51	#define TS_MAX_BUFSIZE_K_DVBC 1316
afa47abf IS	52	#define BUFFER_WARNING_WAIT (30*HZ)
afa47abf IS	53
1da177e4	54	int budget_debug;
afa47abf	55	static int dma_buffer_size = TS_MIN_BUFSIZE_K;
1da177e4	56	module_param_named(debug, budget_debug, int, 0644);
afa47abf	57	module_param_named(bufsize, dma_buffer_size, int, 0444);
1da177e4	58	MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
afa47abf	59	MODULE_PARM_DESC(bufsize, "DMA buffer size in KB, default: 188, min: 188, max: 1410 (Activy: 564)");
1da177e4 LT	60
	61	/****************************************************************************
	62	* TT budget / WinTV Nova
	63	****************************************************************************/
	64
	65	static int stop_ts_capture(struct budget *budget)
	66	{
	67	dprintk(2, "budget: %p\n", budget);
	68
1da177e4 LT	69	saa7146_write(budget->dev, MC1, MASK_20); // DMA3 off
	70	SAA7146_IER_DISABLE(budget->dev, MASK_10);
	71	return 0;
	72	}
	73
	74	static int start_ts_capture(struct budget *budget)
	75	{
	76	struct saa7146_dev *dev = budget->dev;
	77
	78	dprintk(2, "budget: %p\n", budget);
	79
32e4c3a5 OE	80	if (!budget->feeding \|\| !budget->fe_synced)
32e4c3a5 OE	81	return 0;
1da177e4 LT	82
	83	saa7146_write(dev, MC1, MASK_20); // DMA3 off
	84
afa47abf	85	memset(budget->grabbing, 0x00, budget->buffer_size);
1da177e4 LT	86
	87	saa7146_write(dev, PCI_BT_V1, 0x001c0000 \| (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
	88
1da177e4 LT	89	budget->ttbp = 0;
	90
	91	/*
	92	* Signal path on the Activy:
	93	*
	94	* tuner -> SAA7146 port A -> SAA7146 BRS -> SAA7146 DMA3 -> memory
	95	*
	96	* Since the tuner feeds 204 bytes packets into the SAA7146,
	97	* DMA3 is configured to strip the trailing 16 FEC bytes:
	98	* Pitch: 188, NumBytes3: 188, NumLines3: 1024
	99	*/
	100
9101e622	101	switch(budget->card->type) {
1da177e4 LT	102	case BUDGET_FS_ACTIVY:
	103	saa7146_write(dev, DD1_INIT, 0x04000000);
	104	saa7146_write(dev, MC2, (MASK_09 \| MASK_25));
	105	saa7146_write(dev, BRS_CTRL, 0x00000000);
	106	break;
	107	case BUDGET_PATCH:
	108	saa7146_write(dev, DD1_INIT, 0x00000200);
	109	saa7146_write(dev, MC2, (MASK_10 \| MASK_26));
	110	saa7146_write(dev, BRS_CTRL, 0x60000000);
	111	break;
	112	default:
	113	if (budget->video_port == BUDGET_VIDEO_PORTA) {
	114	saa7146_write(dev, DD1_INIT, 0x06000200);
	115	saa7146_write(dev, MC2, (MASK_09 \| MASK_25 \| MASK_10 \| MASK_26));
	116	saa7146_write(dev, BRS_CTRL, 0x00000000);
	117	} else {
	118	saa7146_write(dev, DD1_INIT, 0x02000600);
	119	saa7146_write(dev, MC2, (MASK_09 \| MASK_25 \| MASK_10 \| MASK_26));
	120	saa7146_write(dev, BRS_CTRL, 0x60000000);
	121	}
	122	}
	123
	124	saa7146_write(dev, MC2, (MASK_08 \| MASK_24));
	125	mdelay(10);
	126
	127	saa7146_write(dev, BASE_ODD3, 0);
fd9c66e2 HB	128	if (budget->buffer_size > budget->buffer_height * budget->buffer_width) {
	129	// using odd/even buffers
	130	saa7146_write(dev, BASE_EVEN3, budget->buffer_height * budget->buffer_width);
	131	} else {
	132	// using a single buffer
	133	saa7146_write(dev, BASE_EVEN3, 0);
	134	}
afa47abf	135	saa7146_write(dev, PROT_ADDR3, budget->buffer_size);
1da177e4 LT	136	saa7146_write(dev, BASE_PAGE3, budget->pt.dma \| ME1 \| 0x90);
1da177e4 LT	137
afa47abf IS	138	saa7146_write(dev, PITCH3, budget->buffer_width);
	139	saa7146_write(dev, NUM_LINE_BYTE3,
	140	(budget->buffer_height << 16) \| budget->buffer_width);
1da177e4 LT	141
	142	saa7146_write(dev, MC2, (MASK_04 \| MASK_20));
	143
	144	SAA7146_ISR_CLEAR(budget->dev, MASK_10); /* VPE */
	145	SAA7146_IER_ENABLE(budget->dev, MASK_10); /* VPE */
	146	saa7146_write(dev, MC1, (MASK_04 \| MASK_20)); /* DMA3 on */
	147
32e4c3a5 OE	148	return 0;
	149	}
	150
	151	static int budget_read_fe_status(struct dvb_frontend fe, fe_status_t status)
	152	{
	153	struct budget budget = (struct budget ) fe->dvb->priv;
	154	int synced;
	155	int ret;
	156
	157	if (budget->read_fe_status)
	158	ret = budget->read_fe_status(fe, status);
	159	else
	160	ret = -EINVAL;
	161
	162	if (!ret) {
	163	synced = (*status & FE_HAS_LOCK);
	164	if (synced != budget->fe_synced) {
	165	budget->fe_synced = synced;
	166	spin_lock(&budget->feedlock);
	167	if (synced)
	168	start_ts_capture(budget);
	169	else
	170	stop_ts_capture(budget);
	171	spin_unlock(&budget->feedlock);
	172	}
	173	}
	174	return ret;
1da177e4 LT	175	}
	176
	177	static void vpeirq(unsigned long data)
	178	{
	179	struct budget budget = (struct budget ) data;
	180	u8 mem = (u8 ) (budget->grabbing);
	181	u32 olddma = budget->ttbp;
	182	u32 newdma = saa7146_read(budget->dev, PCI_VDP3);
afa47abf	183	u32 count;
1da177e4 LT	184
	185	/* nearest lower position divisible by 188 */
	186	newdma -= newdma % 188;
	187
afa47abf	188	if (newdma >= budget->buffer_size)
1da177e4 LT	189	return;
	190
	191	budget->ttbp = newdma;
	192
	193	if (budget->feeding == 0 \|\| newdma == olddma)
	194	return;
	195
	196	if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
afa47abf IS	197	count = newdma - olddma;
afa47abf IS	198	dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
1da177e4	199	} else { /* wraparound, dump olddma..buflen and 0..newdma */
afa47abf IS	200	count = budget->buffer_size - olddma;
	201	dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, count / 188);
	202	count += newdma;
1da177e4 LT	203	dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
1da177e4 LT	204	}
afa47abf IS	205
	206	if (count > budget->buffer_warning_threshold)
	207	budget->buffer_warnings++;
	208
	209	if (budget->buffer_warnings && time_after(jiffies, budget->buffer_warning_time)) {
	210	printk("%s %s: used %d times >80%% of buffer (%u bytes now)\n",
	211	budget->dev->name, __FUNCTION__, budget->buffer_warnings, count);
	212	budget->buffer_warning_time = jiffies + BUFFER_WARNING_WAIT;
	213	budget->buffer_warnings = 0;
	214	}
1da177e4 LT	215	}
	216
	217
	218	int ttpci_budget_debiread(struct budget *budget, u32 config, int addr, int count,
	219	int uselocks, int nobusyloop)
	220	{
	221	struct saa7146_dev *saa = budget->dev;
	222	int result = 0;
	223	unsigned long flags = 0;
	224
	225	if (count > 4 \|\| count <= 0)
	226	return 0;
	227
	228	if (uselocks)
	229	spin_lock_irqsave(&budget->debilock, flags);
	230
	231	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
	232	if (uselocks)
	233	spin_unlock_irqrestore(&budget->debilock, flags);
	234	return result;
	235	}
	236
	237	saa7146_write(saa, DEBI_COMMAND, (count << 17) \| 0x10000 \| (addr & 0xffff));
	238	saa7146_write(saa, DEBI_CONFIG, config);
	239	saa7146_write(saa, DEBI_PAGE, 0);
	240	saa7146_write(saa, MC2, (2 << 16) \| 2);
	241
	242	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
	243	if (uselocks)
	244	spin_unlock_irqrestore(&budget->debilock, flags);
	245	return result;
	246	}
	247
	248	result = saa7146_read(saa, DEBI_AD);
	249	result &= (0xffffffffUL >> ((4 - count) * 8));
	250
	251	if (uselocks)
	252	spin_unlock_irqrestore(&budget->debilock, flags);
	253
	254	return result;
	255	}
	256
	257	int ttpci_budget_debiwrite(struct budget *budget, u32 config, int addr,
	258	int count, u32 value, int uselocks, int nobusyloop)
	259	{
	260	struct saa7146_dev *saa = budget->dev;
	261	unsigned long flags = 0;
	262	int result;
	263
	264	if (count > 4 \|\| count <= 0)
	265	return 0;
	266
	267	if (uselocks)
	268	spin_lock_irqsave(&budget->debilock, flags);
	269
	270	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
	271	if (uselocks)
	272	spin_unlock_irqrestore(&budget->debilock, flags);
	273	return result;
	274	}
	275
	276	saa7146_write(saa, DEBI_COMMAND, (count << 17) \| 0x00000 \| (addr & 0xffff));
	277	saa7146_write(saa, DEBI_CONFIG, config);
	278	saa7146_write(saa, DEBI_PAGE, 0);
279	saa7146_write(saa, DEBI_AD, value);
280	saa7146_write(saa, MC2, (2 << 16) \| 2);
281
282	if ((result = saa7146_wait_for_debi_done(saa, nobusyloop)) < 0) {
283	if (uselocks)
284	spin_unlock_irqrestore(&budget->debilock, flags);
285	return result;
286	}
287
288	if (uselocks)
289	spin_unlock_irqrestore(&budget->debilock, flags);
290	return 0;
291	}
292
293
294	/****************************************************************************
295	* DVB API SECTION
296	****************************************************************************/
297
298	static int budget_start_feed(struct dvb_demux_feed *feed)
299	{
300	struct dvb_demux *demux = feed->demux;
301	struct budget budget = (struct budget ) demux->priv;
32e4c3a5	302	int status = 0;
1da177e4 LT	303
	304	dprintk(2, "budget: %p\n", budget);
	305
	306	if (!demux->dmx.frontend)
	307	return -EINVAL;
	308
	309	spin_lock(&budget->feedlock);
	310	feed->pusi_seen = 0; /* have a clean section start */
32e4c3a5 OE	311	if (budget->feeding++ == 0)
32e4c3a5 OE	312	status = start_ts_capture(budget);
1da177e4 LT	313	spin_unlock(&budget->feedlock);
	314	return status;
	315	}
	316
	317	static int budget_stop_feed(struct dvb_demux_feed *feed)
	318	{
	319	struct dvb_demux *demux = feed->demux;
	320	struct budget budget = (struct budget ) demux->priv;
32e4c3a5	321	int status = 0;
1da177e4 LT	322
	323	dprintk(2, "budget: %p\n", budget);
	324
	325	spin_lock(&budget->feedlock);
32e4c3a5 OE	326	if (--budget->feeding == 0)
32e4c3a5 OE	327	status = stop_ts_capture(budget);
1da177e4 LT	328	spin_unlock(&budget->feedlock);
	329	return status;
	330	}
	331
	332	static int budget_register(struct budget *budget)
	333	{
	334	struct dvb_demux *dvbdemux = &budget->demux;
	335	int ret;
	336
	337	dprintk(2, "budget: %p\n", budget);
	338
	339	dvbdemux->priv = (void *) budget;
	340
	341	dvbdemux->filternum = 256;
	342	dvbdemux->feednum = 256;
	343	dvbdemux->start_feed = budget_start_feed;
	344	dvbdemux->stop_feed = budget_stop_feed;
	345	dvbdemux->write_to_decoder = NULL;
	346
	347	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING \| DMX_SECTION_FILTERING \|
	348	DMX_MEMORY_BASED_FILTERING);
	349
	350	dvb_dmx_init(&budget->demux);
	351
	352	budget->dmxdev.filternum = 256;
	353	budget->dmxdev.demux = &dvbdemux->dmx;
	354	budget->dmxdev.capabilities = 0;
	355
fdc53a6d	356	dvb_dmxdev_init(&budget->dmxdev, &budget->dvb_adapter);
1da177e4 LT	357
	358	budget->hw_frontend.source = DMX_FRONTEND_0;
	359
	360	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->hw_frontend);
	361
	362	if (ret < 0)
	363	return ret;
	364
	365	budget->mem_frontend.source = DMX_MEMORY_FE;
	366	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &budget->mem_frontend);
	367	if (ret < 0)
	368	return ret;
	369
	370	ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &budget->hw_frontend);
	371	if (ret < 0)
	372	return ret;
	373
fdc53a6d	374	dvb_net_init(&budget->dvb_adapter, &budget->dvb_net, &dvbdemux->dmx);
1da177e4 LT	375
	376	return 0;
	377	}
	378
	379	static void budget_unregister(struct budget *budget)
	380	{
	381	struct dvb_demux *dvbdemux = &budget->demux;
	382
	383	dprintk(2, "budget: %p\n", budget);
	384
	385	dvb_net_release(&budget->dvb_net);
	386
	387	dvbdemux->dmx.close(&dvbdemux->dmx);
	388	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->hw_frontend);
	389	dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &budget->mem_frontend);
	390
	391	dvb_dmxdev_release(&budget->dmxdev);
	392	dvb_dmx_release(&budget->demux);
	393	}
	394
	395	int ttpci_budget_init(struct budget budget, struct saa7146_dev dev,
	396	struct saa7146_pci_extension_data *info,
	397	struct module *owner)
	398	{
1da177e4 LT	399	int ret = 0;
1da177e4 LT	400	struct budget_info *bi = info->ext_priv;
afa47abf IS	401	int max_bufsize;
afa47abf IS	402	int height_mask;
1da177e4 LT	403
	404	memset(budget, 0, sizeof(struct budget));
	405
	406	dprintk(2, "dev: %p, budget: %p\n", dev, budget);
	407
	408	budget->card = bi;
	409	budget->dev = (struct saa7146_dev *) dev;
	410
fd9c66e2 HB	411	switch(budget->card->type) {
fd9c66e2 HB	412	case BUDGET_FS_ACTIVY:
afa47abf IS	413	budget->buffer_width = TS_WIDTH_ACTIVY;
	414	max_bufsize = TS_MAX_BUFSIZE_K_ACTIVY;
	415	height_mask = TS_HEIGHT_MASK_ACTIVY;
fd9c66e2 HB	416	break;
	417
	418	case BUDGET_KNC1C:
	419	case BUDGET_KNC1CP:
	420	case BUDGET_CIN1200C:
	421	budget->buffer_width = TS_WIDTH_DVBC;
	422	max_bufsize = TS_MAX_BUFSIZE_K_DVBC;
	423	height_mask = TS_HEIGHT_MASK_DVBC;
	424	break;
	425
	426	default:
afa47abf IS	427	budget->buffer_width = TS_WIDTH;
	428	max_bufsize = TS_MAX_BUFSIZE_K;
	429	height_mask = TS_HEIGHT_MASK;
	430	}
	431
	432	if (dma_buffer_size < TS_MIN_BUFSIZE_K)
	433	dma_buffer_size = TS_MIN_BUFSIZE_K;
	434	else if (dma_buffer_size > max_bufsize)
	435	dma_buffer_size = max_bufsize;
	436
	437	budget->buffer_height = dma_buffer_size * 1024 / budget->buffer_width;
fd9c66e2 HB	438	if (budget->buffer_height > 0xfff) {
	439	budget->buffer_height /= 2;
	440	budget->buffer_height &= height_mask;
	441	budget->buffer_size = 2 * budget->buffer_height * budget->buffer_width;
	442	} else {
	443	budget->buffer_height &= height_mask;
	444	budget->buffer_size = budget->buffer_height * budget->buffer_width;
	445	}
afa47abf IS	446	budget->buffer_warning_threshold = budget->buffer_size * 80/100;
	447	budget->buffer_warnings = 0;
	448	budget->buffer_warning_time = jiffies;
	449
fd9c66e2 HB	450	dprintk(2, "%s: buffer type = %s, width = %d, height = %d\n",
	451	budget->dev->name,
	452	budget->buffer_size > budget->buffer_width * budget->buffer_height ? "odd/even" : "single",
	453	budget->buffer_width, budget->buffer_height);
afa47abf IS	454	printk("%s: dma buffer size %u\n", budget->dev->name, budget->buffer_size);
afa47abf IS	455
d09dbf92	456	if ((ret = dvb_register_adapter(&budget->dvb_adapter, budget->card->name, owner, &budget->dev->pci->dev)) < 0) {
dcdda65f AQ	457	return ret;
dcdda65f AQ	458	}
1da177e4 LT	459
	460	/* set dd1 stream a & b */
	461	saa7146_write(dev, DD1_STREAM_B, 0x00000000);
	462	saa7146_write(dev, MC2, (MASK_09 \| MASK_25));
	463	saa7146_write(dev, MC2, (MASK_10 \| MASK_26));
	464	saa7146_write(dev, DD1_INIT, 0x02000000);
	465	saa7146_write(dev, MC2, (MASK_09 \| MASK_25 \| MASK_10 \| MASK_26));
	466
	467	if (bi->type != BUDGET_FS_ACTIVY)
	468	budget->video_port = BUDGET_VIDEO_PORTB;
	469	else
	470	budget->video_port = BUDGET_VIDEO_PORTA;
	471	spin_lock_init(&budget->feedlock);
	472	spin_lock_init(&budget->debilock);
	473
	474	/* the Siemens DVB needs this if you want to have the i2c chips
	475	get recognized before the main driver is loaded */
	476	if (bi->type != BUDGET_FS_ACTIVY)
	477	saa7146_write(dev, GPIO_CTRL, 0x500000); /* GPIO 3 = 1 */
	478
	479	#ifdef I2C_ADAP_CLASS_TV_DIGITAL
	480	budget->i2c_adap.class = I2C_ADAP_CLASS_TV_DIGITAL;
	481	#else
	482	budget->i2c_adap.class = I2C_CLASS_TV_DIGITAL;
	483	#endif
	484
	485	strlcpy(budget->i2c_adap.name, budget->card->name, sizeof(budget->i2c_adap.name));
	486
	487	saa7146_i2c_adapter_prepare(dev, &budget->i2c_adap, SAA7146_I2C_BUS_BIT_RATE_120);
	488	strcpy(budget->i2c_adap.name, budget->card->name);
	489
	490	if (i2c_add_adapter(&budget->i2c_adap) < 0) {
fdc53a6d	491	dvb_unregister_adapter(&budget->dvb_adapter);
1da177e4 LT	492	return -ENOMEM;
	493	}
	494
fdc53a6d	495	ttpci_eeprom_parse_mac(&budget->i2c_adap, budget->dvb_adapter.proposed_mac);
1da177e4 LT	496
1da177e4 LT	497	if (NULL ==
afa47abf	498	(budget->grabbing = saa7146_vmalloc_build_pgtable(dev->pci, budget->buffer_size, &budget->pt))) {
1da177e4 LT	499	ret = -ENOMEM;
	500	goto err;
	501	}
	502
	503	saa7146_write(dev, PCI_BT_V1, 0x001c0000);
	504	/* upload all */
	505	saa7146_write(dev, GPIO_CTRL, 0x000000);
	506
	507	tasklet_init(&budget->vpe_tasklet, vpeirq, (unsigned long) budget);
	508
	509	/* frontend power on */
f49cc15b	510	if (bi->type != BUDGET_FS_ACTIVY)
1da177e4 LT	511	saa7146_setgpio(dev, 2, SAA7146_GPIO_OUTHI);
	512
	513	if (budget_register(budget) == 0) {
	514	return 0;
	515	}
	516	err:
	517	i2c_del_adapter(&budget->i2c_adap);
	518
	519	vfree(budget->grabbing);
	520
fdc53a6d	521	dvb_unregister_adapter(&budget->dvb_adapter);
1da177e4 LT	522
	523	return ret;
	524	}
	525
32e4c3a5 OE	526	void ttpci_budget_init_hooks(struct budget *budget)
	527	{
	528	if (budget->dvb_frontend && !budget->read_fe_status) {
	529	budget->read_fe_status = budget->dvb_frontend->ops.read_status;
	530	budget->dvb_frontend->ops.read_status = budget_read_fe_status;
	531	}
	532	}
	533
1da177e4 LT	534	int ttpci_budget_deinit(struct budget *budget)
	535	{
	536	struct saa7146_dev *dev = budget->dev;
	537
	538	dprintk(2, "budget: %p\n", budget);
	539
	540	budget_unregister(budget);
	541
	542	i2c_del_adapter(&budget->i2c_adap);
	543
fdc53a6d	544	dvb_unregister_adapter(&budget->dvb_adapter);
1da177e4 LT	545
	546	tasklet_kill(&budget->vpe_tasklet);
	547
	548	saa7146_pgtable_free(dev->pci, &budget->pt);
	549
	550	vfree(budget->grabbing);
	551
	552	return 0;
	553	}
	554
	555	void ttpci_budget_irq10_handler(struct saa7146_dev dev, u32 isr)
	556	{
	557	struct budget budget = (struct budget ) dev->ext_priv;
	558
	559	dprintk(8, "dev: %p, budget: %p\n", dev, budget);
	560
	561	if (*isr & MASK_10)
	562	tasklet_schedule(&budget->vpe_tasklet);
	563	}
	564
	565	void ttpci_budget_set_video_port(struct saa7146_dev *dev, int video_port)
	566	{
	567	struct budget budget = (struct budget ) dev->ext_priv;
	568
	569	spin_lock(&budget->feedlock);
	570	budget->video_port = video_port;
	571	if (budget->feeding) {
1da177e4 LT	572	stop_ts_capture(budget);
1da177e4 LT	573	start_ts_capture(budget);
1da177e4 LT	574	}
	575	spin_unlock(&budget->feedlock);
	576	}
	577
	578	EXPORT_SYMBOL_GPL(ttpci_budget_debiread);
	579	EXPORT_SYMBOL_GPL(ttpci_budget_debiwrite);
	580	EXPORT_SYMBOL_GPL(ttpci_budget_init);
32e4c3a5	581	EXPORT_SYMBOL_GPL(ttpci_budget_init_hooks);
1da177e4 LT	582	EXPORT_SYMBOL_GPL(ttpci_budget_deinit);
	583	EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
	584	EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
	585	EXPORT_SYMBOL_GPL(budget_debug);
	586
	587	MODULE_LICENSE("GPL");