![Mauro Carvalho Chehab](/assets/img/avatar_default.png)
- Remove $Id CVS logs for V4L files - linux/version.h replaced by linux/utsname.h - Add new Digimatrix card and LG TAPC Mini tuner for it Signed-off-by: Hermann Pitton <hermann.pitton@onlinehome.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
258 lines
7.4 KiB
C
258 lines
7.4 KiB
C
/*
|
|
*
|
|
* device driver for philips saa7134 based TV cards
|
|
* video4linux video interface
|
|
*
|
|
* (c) 2001,02 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#include <linux/init.h>
|
|
#include <linux/list.h>
|
|
#include <linux/module.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/slab.h>
|
|
|
|
#include "saa7134-reg.h"
|
|
#include "saa7134.h"
|
|
|
|
/* ------------------------------------------------------------------ */
|
|
|
|
static unsigned int vbi_debug = 0;
|
|
module_param(vbi_debug, int, 0644);
|
|
MODULE_PARM_DESC(vbi_debug,"enable debug messages [vbi]");
|
|
|
|
static unsigned int vbibufs = 4;
|
|
module_param(vbibufs, int, 0444);
|
|
MODULE_PARM_DESC(vbibufs,"number of vbi buffers, range 2-32");
|
|
|
|
#define dprintk(fmt, arg...) if (vbi_debug) \
|
|
printk(KERN_DEBUG "%s/vbi: " fmt, dev->name , ## arg)
|
|
|
|
/* ------------------------------------------------------------------ */
|
|
|
|
#define VBI_LINE_COUNT 16
|
|
#define VBI_LINE_LENGTH 2048
|
|
#define VBI_SCALE 0x200
|
|
|
|
static void task_init(struct saa7134_dev *dev, struct saa7134_buf *buf,
|
|
int task)
|
|
{
|
|
struct saa7134_tvnorm *norm = dev->tvnorm;
|
|
|
|
/* setup video scaler */
|
|
saa_writeb(SAA7134_VBI_H_START1(task), norm->h_start & 0xff);
|
|
saa_writeb(SAA7134_VBI_H_START2(task), norm->h_start >> 8);
|
|
saa_writeb(SAA7134_VBI_H_STOP1(task), norm->h_stop & 0xff);
|
|
saa_writeb(SAA7134_VBI_H_STOP2(task), norm->h_stop >> 8);
|
|
saa_writeb(SAA7134_VBI_V_START1(task), norm->vbi_v_start_0 & 0xff);
|
|
saa_writeb(SAA7134_VBI_V_START2(task), norm->vbi_v_start_0 >> 8);
|
|
saa_writeb(SAA7134_VBI_V_STOP1(task), norm->vbi_v_stop_0 & 0xff);
|
|
saa_writeb(SAA7134_VBI_V_STOP2(task), norm->vbi_v_stop_0 >> 8);
|
|
|
|
saa_writeb(SAA7134_VBI_H_SCALE_INC1(task), VBI_SCALE & 0xff);
|
|
saa_writeb(SAA7134_VBI_H_SCALE_INC2(task), VBI_SCALE >> 8);
|
|
saa_writeb(SAA7134_VBI_PHASE_OFFSET_LUMA(task), 0x00);
|
|
saa_writeb(SAA7134_VBI_PHASE_OFFSET_CHROMA(task), 0x00);
|
|
|
|
saa_writeb(SAA7134_VBI_H_LEN1(task), buf->vb.width & 0xff);
|
|
saa_writeb(SAA7134_VBI_H_LEN2(task), buf->vb.width >> 8);
|
|
saa_writeb(SAA7134_VBI_V_LEN1(task), buf->vb.height & 0xff);
|
|
saa_writeb(SAA7134_VBI_V_LEN2(task), buf->vb.height >> 8);
|
|
|
|
saa_andorb(SAA7134_DATA_PATH(task), 0xc0, 0x00);
|
|
}
|
|
|
|
/* ------------------------------------------------------------------ */
|
|
|
|
static int buffer_activate(struct saa7134_dev *dev,
|
|
struct saa7134_buf *buf,
|
|
struct saa7134_buf *next)
|
|
{
|
|
unsigned long control,base;
|
|
|
|
dprintk("buffer_activate [%p]\n",buf);
|
|
buf->vb.state = STATE_ACTIVE;
|
|
buf->top_seen = 0;
|
|
|
|
task_init(dev,buf,TASK_A);
|
|
task_init(dev,buf,TASK_B);
|
|
saa_writeb(SAA7134_OFMT_DATA_A, 0x06);
|
|
saa_writeb(SAA7134_OFMT_DATA_B, 0x06);
|
|
|
|
/* DMA: setup channel 2+3 (= VBI Task A+B) */
|
|
base = saa7134_buffer_base(buf);
|
|
control = SAA7134_RS_CONTROL_BURST_16 |
|
|
SAA7134_RS_CONTROL_ME |
|
|
(buf->pt->dma >> 12);
|
|
saa_writel(SAA7134_RS_BA1(2),base);
|
|
saa_writel(SAA7134_RS_BA2(2),base + buf->vb.size/2);
|
|
saa_writel(SAA7134_RS_PITCH(2),buf->vb.width);
|
|
saa_writel(SAA7134_RS_CONTROL(2),control);
|
|
saa_writel(SAA7134_RS_BA1(3),base);
|
|
saa_writel(SAA7134_RS_BA2(3),base + buf->vb.size/2);
|
|
saa_writel(SAA7134_RS_PITCH(3),buf->vb.width);
|
|
saa_writel(SAA7134_RS_CONTROL(3),control);
|
|
|
|
/* start DMA */
|
|
saa7134_set_dmabits(dev);
|
|
mod_timer(&dev->vbi_q.timeout, jiffies+BUFFER_TIMEOUT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int buffer_prepare(struct videobuf_queue *q,
|
|
struct videobuf_buffer *vb,
|
|
enum v4l2_field field)
|
|
{
|
|
struct saa7134_fh *fh = q->priv_data;
|
|
struct saa7134_dev *dev = fh->dev;
|
|
struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
|
|
struct saa7134_tvnorm *norm = dev->tvnorm;
|
|
unsigned int lines, llength, size;
|
|
int err;
|
|
|
|
lines = norm->vbi_v_stop_0 - norm->vbi_v_start_0 +1;
|
|
if (lines > VBI_LINE_COUNT)
|
|
lines = VBI_LINE_COUNT;
|
|
llength = VBI_LINE_LENGTH;
|
|
size = lines * llength * 2;
|
|
if (0 != buf->vb.baddr && buf->vb.bsize < size)
|
|
return -EINVAL;
|
|
|
|
if (buf->vb.size != size)
|
|
saa7134_dma_free(dev,buf);
|
|
|
|
if (STATE_NEEDS_INIT == buf->vb.state) {
|
|
buf->vb.width = llength;
|
|
buf->vb.height = lines;
|
|
buf->vb.size = size;
|
|
buf->pt = &fh->pt_vbi;
|
|
|
|
err = videobuf_iolock(dev->pci,&buf->vb,NULL);
|
|
if (err)
|
|
goto oops;
|
|
err = saa7134_pgtable_build(dev->pci,buf->pt,
|
|
buf->vb.dma.sglist,
|
|
buf->vb.dma.sglen,
|
|
saa7134_buffer_startpage(buf));
|
|
if (err)
|
|
goto oops;
|
|
}
|
|
buf->vb.state = STATE_PREPARED;
|
|
buf->activate = buffer_activate;
|
|
buf->vb.field = field;
|
|
return 0;
|
|
|
|
oops:
|
|
saa7134_dma_free(dev,buf);
|
|
return err;
|
|
}
|
|
|
|
static int
|
|
buffer_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
|
|
{
|
|
struct saa7134_fh *fh = q->priv_data;
|
|
struct saa7134_dev *dev = fh->dev;
|
|
int llength,lines;
|
|
|
|
lines = dev->tvnorm->vbi_v_stop_0 - dev->tvnorm->vbi_v_start_0 +1;
|
|
llength = VBI_LINE_LENGTH;
|
|
*size = lines * llength * 2;
|
|
if (0 == *count)
|
|
*count = vbibufs;
|
|
*count = saa7134_buffer_count(*size,*count);
|
|
return 0;
|
|
}
|
|
|
|
static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
|
|
{
|
|
struct saa7134_fh *fh = q->priv_data;
|
|
struct saa7134_dev *dev = fh->dev;
|
|
struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
|
|
|
|
saa7134_buffer_queue(dev,&dev->vbi_q,buf);
|
|
}
|
|
|
|
static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
|
|
{
|
|
struct saa7134_fh *fh = q->priv_data;
|
|
struct saa7134_dev *dev = fh->dev;
|
|
struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
|
|
|
|
saa7134_dma_free(dev,buf);
|
|
}
|
|
|
|
struct videobuf_queue_ops saa7134_vbi_qops = {
|
|
.buf_setup = buffer_setup,
|
|
.buf_prepare = buffer_prepare,
|
|
.buf_queue = buffer_queue,
|
|
.buf_release = buffer_release,
|
|
};
|
|
|
|
/* ------------------------------------------------------------------ */
|
|
|
|
int saa7134_vbi_init1(struct saa7134_dev *dev)
|
|
{
|
|
INIT_LIST_HEAD(&dev->vbi_q.queue);
|
|
init_timer(&dev->vbi_q.timeout);
|
|
dev->vbi_q.timeout.function = saa7134_buffer_timeout;
|
|
dev->vbi_q.timeout.data = (unsigned long)(&dev->vbi_q);
|
|
dev->vbi_q.dev = dev;
|
|
|
|
if (vbibufs < 2)
|
|
vbibufs = 2;
|
|
if (vbibufs > VIDEO_MAX_FRAME)
|
|
vbibufs = VIDEO_MAX_FRAME;
|
|
return 0;
|
|
}
|
|
|
|
int saa7134_vbi_fini(struct saa7134_dev *dev)
|
|
{
|
|
/* nothing */
|
|
return 0;
|
|
}
|
|
|
|
void saa7134_irq_vbi_done(struct saa7134_dev *dev, unsigned long status)
|
|
{
|
|
spin_lock(&dev->slock);
|
|
if (dev->vbi_q.curr) {
|
|
dev->vbi_fieldcount++;
|
|
/* make sure we have seen both fields */
|
|
if ((status & 0x10) == 0x00) {
|
|
dev->vbi_q.curr->top_seen = 1;
|
|
goto done;
|
|
}
|
|
if (!dev->vbi_q.curr->top_seen)
|
|
goto done;
|
|
|
|
dev->vbi_q.curr->vb.field_count = dev->vbi_fieldcount;
|
|
saa7134_buffer_finish(dev,&dev->vbi_q,STATE_DONE);
|
|
}
|
|
saa7134_buffer_next(dev,&dev->vbi_q);
|
|
|
|
done:
|
|
spin_unlock(&dev->slock);
|
|
}
|
|
|
|
/* ----------------------------------------------------------- */
|
|
/*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* End:
|
|
*/
|