Release 4.7 drivers/media/pci/saa7134/saa7134-vbi.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 "saa7134.h"
#include "saa7134-reg.h"
#include <linux/init.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/kernel.h>
/* ------------------------------------------------------------------ */
static unsigned int vbi_debug;
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 vbi_dbg(fmt, arg...) do { \
if (vbi_debug) \
printk(KERN_DEBUG pr_fmt("vbi: " fmt), ## arg); \
} while (0)
/* ------------------------------------------------------------------ */
#define VBI_LINE_COUNT 17
#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), dev->vbi_hlen & 0xff);
saa_writeb(SAA7134_VBI_H_LEN2(task), dev->vbi_hlen >> 8);
saa_writeb(SAA7134_VBI_V_LEN1(task), dev->vbi_vlen & 0xff);
saa_writeb(SAA7134_VBI_V_LEN2(task), dev->vbi_vlen >> 8);
saa_andorb(SAA7134_DATA_PATH(task), 0xc0, 0x00);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| gerd knorr | gerd knorr | 241 | 95.26% | 1 | 33.33% |
| hans verkuil | hans verkuil | 8 | 3.16% | 1 | 33.33% |
| michael h. schimek | michael h. schimek | 4 | 1.58% | 1 | 33.33% |
| Total | 253 | 100.00% | 3 | 100.00% |
/* ------------------------------------------------------------------ */
static int buffer_activate(struct saa7134_dev *dev,
struct saa7134_buf *buf,
struct saa7134_buf *next)
{
struct saa7134_dmaqueue *dmaq = buf->vb2.vb2_buf.vb2_queue->drv_priv;
unsigned long control, base;
vbi_dbg("buffer_activate [%p]\n", buf);
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 |
(dmaq->pt.dma >> 12);
saa_writel(SAA7134_RS_BA1(2), base);
saa_writel(SAA7134_RS_BA2(2), base + dev->vbi_hlen * dev->vbi_vlen);
saa_writel(SAA7134_RS_PITCH(2), dev->vbi_hlen);
saa_writel(SAA7134_RS_CONTROL(2), control);
saa_writel(SAA7134_RS_BA1(3), base);
saa_writel(SAA7134_RS_BA2(3), base + dev->vbi_hlen * dev->vbi_vlen);
saa_writel(SAA7134_RS_PITCH(3), dev->vbi_hlen);
saa_writel(SAA7134_RS_CONTROL(3), control);
/* start DMA */
saa7134_set_dmabits(dev);
mod_timer(&dmaq->timeout, jiffies + BUFFER_TIMEOUT);
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| gerd knorr | gerd knorr | 193 | 83.19% | 1 | 14.29% |
| hans verkuil | hans verkuil | 32 | 13.79% | 3 | 42.86% |
| andrew morton | andrew morton | 4 | 1.72% | 1 | 14.29% |
| junghak sung | junghak sung | 2 | 0.86% | 1 | 14.29% |
| mauro carvalho chehab | mauro carvalho chehab | 1 | 0.43% | 1 | 14.29% |
| Total | 232 | 100.00% | 7 | 100.00% |
static int buffer_prepare(struct vb2_buffer *vb2)
{
struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
struct saa7134_dev *dev = dmaq->dev;
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb2);
struct saa7134_buf *buf = container_of(vbuf, struct saa7134_buf, vb2);
struct sg_table *dma = vb2_dma_sg_plane_desc(vb2, 0);
unsigned int size;
if (dma->sgl->offset) {
pr_err("The buffer is not page-aligned\n");
return -EINVAL;
}
size = dev->vbi_hlen * dev->vbi_vlen * 2;
if (vb2_plane_size(vb2, 0) < size)
return -EINVAL;
vb2_set_plane_payload(vb2, 0, size);
return saa7134_pgtable_build(dev->pci, &dmaq->pt, dma->sgl, dma->nents,
saa7134_buffer_startpage(buf));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hans verkuil | hans verkuil | 70 | 45.75% | 4 | 44.44% |
| gerd knorr | gerd knorr | 68 | 44.44% | 2 | 22.22% |
| junghak sung | junghak sung | 11 | 7.19% | 1 | 11.11% |
| andrew morton | andrew morton | 2 | 1.31% | 1 | 11.11% |
| mauro carvalho chehab | mauro carvalho chehab | 2 | 1.31% | 1 | 11.11% |
| Total | 153 | 100.00% | 9 | 100.00% |
static int queue_setup(struct vb2_queue *q,
unsigned int *nbuffers, unsigned int *nplanes,
unsigned int sizes[], void *alloc_ctxs[])
{
struct saa7134_dmaqueue *dmaq = q->drv_priv;
struct saa7134_dev *dev = dmaq->dev;
unsigned int size;
dev->vbi_vlen = dev->tvnorm->vbi_v_stop_0 - dev->tvnorm->vbi_v_start_0 + 1;
if (dev->vbi_vlen > VBI_LINE_COUNT)
dev->vbi_vlen = VBI_LINE_COUNT;
dev->vbi_hlen = VBI_LINE_LENGTH;
size = dev->vbi_hlen * dev->vbi_vlen * 2;
*nbuffers = saa7134_buffer_count(size, *nbuffers);
*nplanes = 1;
sizes[0] = size;
alloc_ctxs[0] = dev->alloc_ctx;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| hans verkuil | hans verkuil | 80 | 57.97% | 5 | 55.56% |
| gerd knorr | gerd knorr | 54 | 39.13% | 2 | 22.22% |
| andrew morton | andrew morton | 2 | 1.45% | 1 | 11.11% |
| michael h. schimek | michael h. schimek | 2 | 1.45% | 1 | 11.11% |
| Total | 138 | 100.00% | 9 | 100.00% |
static int buffer_init(struct vb2_buffer *vb2)
{
struct saa7134_dmaqueue *dmaq = vb2->vb2_queue->drv_priv;
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb2);
struct saa7134_buf *buf = container_of(vbuf, struct saa7134_buf, vb2);
dmaq->curr = NULL;
buf->activate = buffer_activate;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| gerd knorr | gerd knorr | 26 | 41.94% | 2 | 40.00% |
| hans verkuil | hans verkuil | 25 | 40.32% | 2 | 40.00% |
| junghak sung | junghak sung | 11 | 17.74% | 1 | 20.00% |
| Total | 62 | 100.00% | 5 | 100.00% |
struct vb2_ops saa7134_vbi_qops = {
.queue_setup = queue_setup,
.buf_init = buffer_init,
.buf_prepare = buffer_prepare,
.buf_queue = saa7134_vb2_buffer_queue,
.wait_prepare = vb2_ops_wait_prepare,
.wait_finish = vb2_ops_wait_finish,
.start_streaming = saa7134_vb2_start_streaming,
.stop_streaming = saa7134_vb2_stop_streaming,
};
/* ------------------------------------------------------------------ */
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;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| gerd knorr | gerd knorr | 90 | 100.00% | 3 | 100.00% |
| Total | 90 | 100.00% | 3 | 100.00% |
int saa7134_vbi_fini(struct saa7134_dev *dev)
{
/* nothing */
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| gerd knorr | gerd knorr | 14 | 100.00% | 1 | 100.00% |
| Total | 14 | 100.00% | 1 | 100.00% |
void saa7134_irq_vbi_done(struct saa7134_dev *dev, unsigned long status)
{
spin_lock(&dev->slock);
if (dev->vbi_q.curr) {
/* 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;
saa7134_buffer_finish(dev, &dev->vbi_q, VB2_BUF_STATE_DONE);
}
saa7134_buffer_next(dev, &dev->vbi_q);
done:
spin_unlock(&dev->slock);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| gerd knorr | gerd knorr | 102 | 98.08% | 1 | 33.33% |
| andrew morton | andrew morton | 1 | 0.96% | 1 | 33.33% |
| hans verkuil | hans verkuil | 1 | 0.96% | 1 | 33.33% |
| Total | 104 | 100.00% | 3 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| gerd knorr | gerd knorr | 879 | 74.43% | 4 | 20.00% |
| hans verkuil | hans verkuil | 243 | 20.58% | 7 | 35.00% |
| junghak sung | junghak sung | 24 | 2.03% | 1 | 5.00% |
| mauro carvalho chehab | mauro carvalho chehab | 12 | 1.02% | 5 | 25.00% |
| andrew morton | andrew morton | 9 | 0.76% | 1 | 5.00% |
| rusty russell | rusty russell | 8 | 0.68% | 1 | 5.00% |
| michael h. schimek | michael h. schimek | 6 | 0.51% | 1 | 5.00% |
| Total | 1181 | 100.00% | 20 | 100.00% |
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