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kernel-ark/drivers/media/dvb/ttpci/budget-core.c
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2 
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00

481 lines
13 KiB
C
Raw Blame History

/*
* 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"
int budget_debug;
module_param_named(debug, budget_debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off budget debugging (default:off).");
/****************************************************************************
* TT budget / WinTV Nova
****************************************************************************/
static int stop_ts_capture(struct budget *budget)
{
dprintk(2, "budget: %p\n", budget);
if (--budget->feeding)
return budget->feeding;
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)
return ++budget->feeding;
saa7146_write(dev, MC1, MASK_20); // DMA3 off
memset(budget->grabbing, 0x00, TS_HEIGHT * TS_WIDTH);
saa7146_write(dev, PCI_BT_V1, 0x001c0000 | (saa7146_read(dev, PCI_BT_V1) & ~0x001f0000));
budget->tsf = 0xff;
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);
saa7146_write(dev, BASE_EVEN3, 0);
saa7146_write(dev, PROT_ADDR3, TS_WIDTH * TS_HEIGHT);
saa7146_write(dev, BASE_PAGE3, budget->pt.dma | ME1 | 0x90);
if (budget->card->type == BUDGET_FS_ACTIVY) {
saa7146_write(dev, PITCH3, TS_WIDTH / 2);
saa7146_write(dev, NUM_LINE_BYTE3, ((TS_HEIGHT * 2) << 16) | (TS_WIDTH / 2));
} else {
saa7146_write(dev, PITCH3, TS_WIDTH);
saa7146_write(dev, NUM_LINE_BYTE3, (TS_HEIGHT << 16) | TS_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 ++budget->feeding;
}
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);
/* nearest lower position divisible by 188 */
newdma -= newdma % 188;
if (newdma >= TS_BUFLEN)
return;
budget->ttbp = newdma;
if (budget->feeding == 0 || newdma == olddma)
return;
if (newdma > olddma) { /* no wraparound, dump olddma..newdma */
dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, (newdma - olddma) / 188);
} else { /* wraparound, dump olddma..buflen and 0..newdma */
dvb_dmx_swfilter_packets(&budget->demux, mem + olddma, (TS_BUFLEN - olddma) / 188);
dvb_dmx_swfilter_packets(&budget->demux, mem, newdma / 188);
}
}
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;
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 */
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;
dprintk(2, "budget: %p\n", budget);
spin_lock(&budget->feedlock);
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 length = TS_WIDTH * TS_HEIGHT;
int ret = 0;
struct budget_info *bi = info->ext_priv;
memset(budget, 0, sizeof(struct budget));
dprintk(2, "dev: %p, budget: %p\n", dev, budget);
budget->card = bi;
budget->dev = (struct saa7146_dev *) dev;
dvb_register_adapter(&budget->dvb_adapter, budget->card->name, owner);
/* 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, length, &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, 1, SAA7146_GPIO_OUTHI);
else
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;
}
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) {
int oldfeeding = budget->feeding;
budget->feeding = 1;
stop_ts_capture(budget);
start_ts_capture(budget);
budget->feeding = oldfeeding;
}
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_deinit);
EXPORT_SYMBOL_GPL(ttpci_budget_irq10_handler);
EXPORT_SYMBOL_GPL(ttpci_budget_set_video_port);
EXPORT_SYMBOL_GPL(budget_debug);
MODULE_LICENSE("GPL");
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