diff options
Diffstat (limited to 'drivers/media/video/saa7134/saa7134-vbi.c')
| -rw-r--r-- | drivers/media/video/saa7134/saa7134-vbi.c | 255 |
1 files changed, 0 insertions, 255 deletions
diff --git a/drivers/media/video/saa7134/saa7134-vbi.c b/drivers/media/video/saa7134/saa7134-vbi.c deleted file mode 100644 index e9aa94b807f1..000000000000 --- a/drivers/media/video/saa7134/saa7134-vbi.c +++ /dev/null @@ -1,255 +0,0 @@ -/* - * - * 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/kernel.h> - -#include "saa7134-reg.h" -#include "saa7134.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 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 = VIDEOBUF_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(q,buf); - - if (VIDEOBUF_NEEDS_INIT == buf->vb.state) { - struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb); - - buf->vb.width = llength; - buf->vb.height = lines; - buf->vb.size = size; - buf->pt = &fh->pt_vbi; - - err = videobuf_iolock(q,&buf->vb,NULL); - if (err) - goto oops; - err = saa7134_pgtable_build(dev->pci,buf->pt, - dma->sglist, - dma->sglen, - saa7134_buffer_startpage(buf)); - if (err) - goto oops; - } - buf->vb.state = VIDEOBUF_PREPARED; - buf->activate = buffer_activate; - buf->vb.field = field; - return 0; - - oops: - saa7134_dma_free(q,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_buf *buf = container_of(vb,struct saa7134_buf,vb); - - saa7134_dma_free(q,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,VIDEOBUF_DONE); - } - saa7134_buffer_next(dev,&dev->vbi_q); - - done: - spin_unlock(&dev->slock); -} - -/* ----------------------------------------------------------- */ -/* - * Local variables: - * c-basic-offset: 8 - * End: - */ |