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!

1 files changed, 243 insertions, 0 deletions

diff --git a/drivers/media/video/saa7134/saa7134-ts.c b/drivers/media/video/saa7134/saa7134-ts.c
new file mode 100644
index 00000000000..345eb2a8c28
--- /dev/null
+++ b/drivers/media/video/saa7134/saa7134-ts.c
@@ -0,0 +1,243 @@
+/*
+ * $Id: saa7134-ts.c,v 1.14 2005/02/03 10:24:33 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 <linux/delay.h>
+
+#include "saa7134-reg.h"
+#include "saa7134.h"
+
+/* ------------------------------------------------------------------ */
+
+static unsigned int ts_debug  = 0;
+module_param(ts_debug, int, 0644);
+MODULE_PARM_DESC(ts_debug,"enable debug messages [ts]");
+
+#define dprintk(fmt, arg...)	if (ts_debug) \
+	printk(KERN_DEBUG "%s/ts: " fmt, dev->name , ## arg)
+
+/* ------------------------------------------------------------------ */
+
+static int buffer_activate(struct saa7134_dev *dev,
+			   struct saa7134_buf *buf,
+			   struct saa7134_buf *next)
+{
+	u32 control;
+
+	dprintk("buffer_activate [%p]",buf);
+	buf->vb.state = STATE_ACTIVE;
+	buf->top_seen = 0;
+
+        /* dma: setup channel 5 (= TS) */
+        control = SAA7134_RS_CONTROL_BURST_16 |
+                SAA7134_RS_CONTROL_ME |
+                (buf->pt->dma >> 12);
+
+	if (NULL == next)
+		next = buf;
+	if (V4L2_FIELD_TOP == buf->vb.field) {
+		dprintk("- [top]     buf=%p next=%p\n",buf,next);
+		saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(buf));
+		saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(next));
+	} else {
+		dprintk("- [bottom]  buf=%p next=%p\n",buf,next);
+		saa_writel(SAA7134_RS_BA1(5),saa7134_buffer_base(next));
+		saa_writel(SAA7134_RS_BA2(5),saa7134_buffer_base(buf));
+	}
+	saa_writel(SAA7134_RS_PITCH(5),TS_PACKET_SIZE);
+	saa_writel(SAA7134_RS_CONTROL(5),control);
+
+	/* start DMA */
+	saa7134_set_dmabits(dev);
+
+	mod_timer(&dev->ts_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_dev *dev = q->priv_data;
+	struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
+	unsigned int lines, llength, size;
+	int err;
+
+	dprintk("buffer_prepare [%p,%s]\n",buf,v4l2_field_names[field]);
+
+	llength = TS_PACKET_SIZE;
+	lines = dev->ts.nr_packets;
+
+	size = lines * llength;
+	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        = &dev->ts.pt_ts;
+
+		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_dev *dev = q->priv_data;
+
+	*size = TS_PACKET_SIZE * dev->ts.nr_packets;
+	if (0 == *count)
+		*count = dev->ts.nr_bufs;
+	*count = saa7134_buffer_count(*size,*count);
+	return 0;
+}
+
+static void buffer_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
+{
+	struct saa7134_dev *dev = q->priv_data;
+	struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
+
+	saa7134_buffer_queue(dev,&dev->ts_q,buf);
+}
+
+static void buffer_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
+{
+	struct saa7134_dev *dev = q->priv_data;
+	struct saa7134_buf *buf = container_of(vb,struct saa7134_buf,vb);
+
+	saa7134_dma_free(dev,buf);
+}
+
+struct videobuf_queue_ops saa7134_ts_qops = {
+	.buf_setup    = buffer_setup,
+	.buf_prepare  = buffer_prepare,
+	.buf_queue    = buffer_queue,
+	.buf_release  = buffer_release,
+};
+EXPORT_SYMBOL_GPL(saa7134_ts_qops);
+
+/* ----------------------------------------------------------- */
+/* exported stuff                                              */
+
+static unsigned int tsbufs = 4;
+module_param(tsbufs, int, 0444);
+MODULE_PARM_DESC(tsbufs,"number of ts buffers, range 2-32");
+
+static unsigned int ts_nr_packets = 30;
+module_param(ts_nr_packets, int, 0444);
+MODULE_PARM_DESC(ts_nr_packets,"size of a ts buffers (in ts packets)");
+
+int saa7134_ts_init1(struct saa7134_dev *dev)
+{
+	/* sanitycheck insmod options */
+	if (tsbufs < 2)
+		tsbufs = 2;
+	if (tsbufs > VIDEO_MAX_FRAME)
+		tsbufs = VIDEO_MAX_FRAME;
+	if (ts_nr_packets < 4)
+		ts_nr_packets = 4;
+	if (ts_nr_packets > 312)
+		ts_nr_packets = 312;
+	dev->ts.nr_bufs    = tsbufs;
+	dev->ts.nr_packets = ts_nr_packets;
+
+	INIT_LIST_HEAD(&dev->ts_q.queue);
+	init_timer(&dev->ts_q.timeout);
+	dev->ts_q.timeout.function = saa7134_buffer_timeout;
+	dev->ts_q.timeout.data     = (unsigned long)(&dev->ts_q);
+	dev->ts_q.dev              = dev;
+	dev->ts_q.need_two         = 1;
+	saa7134_pgtable_alloc(dev->pci,&dev->ts.pt_ts);
+
+	/* init TS hw */
+	saa_writeb(SAA7134_TS_SERIAL1, 0x00);  /* deactivate TS softreset */
+	saa_writeb(SAA7134_TS_PARALLEL, 0xec); /* TSSOP high active, TSVAL high active, TSLOCK ignored */
+	saa_writeb(SAA7134_TS_PARALLEL_SERIAL, (TS_PACKET_SIZE-1));
+	saa_writeb(SAA7134_TS_DMA0, ((dev->ts.nr_packets-1)&0xff));
+	saa_writeb(SAA7134_TS_DMA1, (((dev->ts.nr_packets-1)>>8)&0xff));
+	saa_writeb(SAA7134_TS_DMA2, ((((dev->ts.nr_packets-1)>>16)&0x3f) | 0x00)); /* TSNOPIT=0, TSCOLAP=0 */
+
+	return 0;
+}
+
+int saa7134_ts_fini(struct saa7134_dev *dev)
+{
+	saa7134_pgtable_free(dev->pci,&dev->ts.pt_ts);
+	return 0;
+}
+
+
+void saa7134_irq_ts_done(struct saa7134_dev *dev, unsigned long status)
+{
+	enum v4l2_field field;
+
+	spin_lock(&dev->slock);
+	if (dev->ts_q.curr) {
+		field = dev->ts_q.curr->vb.field;
+		if (field == V4L2_FIELD_TOP) {
+			if ((status & 0x100000) != 0x000000)
+				goto done;
+		} else {
+			if ((status & 0x100000) != 0x100000)
+				goto done;
+		}
+		saa7134_buffer_finish(dev,&dev->ts_q,STATE_DONE);
+	}
+	saa7134_buffer_next(dev,&dev->ts_q);
+
+ done:
+	spin_unlock(&dev->slock);
+}
+
+/* ----------------------------------------------------------- */
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */