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!
diff --git a/drivers/media/video/saa7134/saa7134-vbi.c b/drivers/media/video/saa7134/saa7134-vbi.c
new file mode 100644
index 0000000..86954cc
--- /dev/null
+++ b/drivers/media/video/saa7134/saa7134-vbi.c
@@ -0,0 +1,270 @@
+/*
+ * $Id: saa7134-vbi.c,v 1.6 2004/12/10 12:33:39 kraxel Exp $
+ *
+ * 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 & 0xff);
+ saa_writeb(SAA7134_VBI_V_START2(task), norm->vbi_v_start >> 8);
+ saa_writeb(SAA7134_VBI_V_STOP1(task), norm->vbi_v_stop & 0xff);
+ saa_writeb(SAA7134_VBI_V_STOP2(task), norm->vbi_v_stop >> 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 - norm->vbi_v_start +1;
+ if (lines > VBI_LINE_COUNT)
+ lines = VBI_LINE_COUNT;
+#if 1
+ llength = VBI_LINE_LENGTH;
+#else
+ llength = (norm->h_stop - norm->h_start +1) * 2;
+ if (llength > VBI_LINE_LENGTH)
+ llength = VBI_LINE_LENGTH;
+#endif
+ 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 - dev->tvnorm->vbi_v_start +1;
+#if 1
+ llength = VBI_LINE_LENGTH;
+#else
+ llength = (norm->h_stop - norm->h_start +1) * 2;
+ if (llength > VBI_LINE_LENGTH)
+ llength = VBI_LINE_LENGTH;
+#endif
+ *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:
+ */