Linux-2.6.12-rc2v2.6.12-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, 248 insertions, 0 deletions

diff --git a/drivers/media/video/cx88/cx88-vbi.c b/drivers/media/video/cx88/cx88-vbi.c
new file mode 100644
index 000000000000..471e508b0746
--- /dev/null
+++ b/drivers/media/video/cx88/cx88-vbi.c
@@ -0,0 +1,248 @@
+/*
+ * $Id: cx88-vbi.c,v 1.16 2004/12/10 12:33:39 kraxel Exp $
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+
+#include "cx88.h"
+
+static unsigned int vbibufs = 4;
+module_param(vbibufs,int,0644);
+MODULE_PARM_DESC(vbibufs,"number of vbi buffers, range 2-32");
+
+static unsigned int vbi_debug = 0;
+module_param(vbi_debug,int,0644);
+MODULE_PARM_DESC(vbi_debug,"enable debug messages [vbi]");
+
+#define dprintk(level,fmt, arg...)	if (vbi_debug >= level) \
+	printk(KERN_DEBUG "%s: " fmt, dev->core->name , ## arg)
+
+/* ------------------------------------------------------------------ */
+
+void cx8800_vbi_fmt(struct cx8800_dev *dev, struct v4l2_format *f)
+{
+	memset(&f->fmt.vbi,0,sizeof(f->fmt.vbi));
+
+	f->fmt.vbi.samples_per_line = VBI_LINE_LENGTH;
+	f->fmt.vbi.sample_format = V4L2_PIX_FMT_GREY;
+	f->fmt.vbi.offset = 244;
+	f->fmt.vbi.count[0] = VBI_LINE_COUNT;
+	f->fmt.vbi.count[1] = VBI_LINE_COUNT;
+
+	if (dev->core->tvnorm->id & V4L2_STD_525_60) {
+		/* ntsc */
+		f->fmt.vbi.sampling_rate = 28636363;
+		f->fmt.vbi.start[0] = 10 -1;
+		f->fmt.vbi.start[1] = 273 -1;
+
+	} else if (dev->core->tvnorm->id & V4L2_STD_625_50) {
+		/* pal */
+		f->fmt.vbi.sampling_rate = 35468950;
+		f->fmt.vbi.start[0] = 7 -1;
+		f->fmt.vbi.start[1] = 319 -1;
+	}
+}
+
+int cx8800_start_vbi_dma(struct cx8800_dev    *dev,
+			 struct cx88_dmaqueue *q,
+			 struct cx88_buffer   *buf)
+{
+	struct cx88_core *core = dev->core;
+
+	/* setup fifo + format */
+	cx88_sram_channel_setup(dev->core, &cx88_sram_channels[SRAM_CH24],
+				buf->vb.width, buf->risc.dma);
+
+	cx_write(MO_VBOS_CONTROL, ( (1 << 18) |  // comb filter delay fixup
+				    (1 << 15) |  // enable vbi capture
+				    (1 << 11) ));
+
+	/* reset counter */
+	cx_write(MO_VBI_GPCNTRL, GP_COUNT_CONTROL_RESET);
+	q->count = 1;
+
+	/* enable irqs */
+	cx_set(MO_PCI_INTMSK, core->pci_irqmask | 0x01);
+	cx_set(MO_VID_INTMSK, 0x0f0088);
+
+	/* enable capture */
+	cx_set(VID_CAPTURE_CONTROL,0x18);
+
+	/* start dma */
+	cx_set(MO_DEV_CNTRL2, (1<<5));
+	cx_set(MO_VID_DMACNTRL, 0x88);
+
+	return 0;
+}
+
+int cx8800_stop_vbi_dma(struct cx8800_dev *dev)
+{
+	struct cx88_core *core = dev->core;
+
+	/* stop dma */
+	cx_clear(MO_VID_DMACNTRL, 0x88);
+
+	/* disable capture */
+	cx_clear(VID_CAPTURE_CONTROL,0x18);
+
+	/* disable irqs */
+	cx_clear(MO_PCI_INTMSK, 0x000001);
+	cx_clear(MO_VID_INTMSK, 0x0f0088);
+	return 0;
+}
+
+int cx8800_restart_vbi_queue(struct cx8800_dev    *dev,
+			     struct cx88_dmaqueue *q)
+{
+	struct cx88_buffer *buf;
+	struct list_head *item;
+
+	if (list_empty(&q->active))
+		return 0;
+
+	buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
+	dprintk(2,"restart_queue [%p/%d]: restart dma\n",
+		buf, buf->vb.i);
+	cx8800_start_vbi_dma(dev, q, buf);
+	list_for_each(item,&q->active) {
+		buf = list_entry(item, struct cx88_buffer, vb.queue);
+		buf->count = q->count++;
+	}
+	mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
+	return 0;
+}
+
+void cx8800_vbi_timeout(unsigned long data)
+{
+	struct cx8800_dev *dev = (struct cx8800_dev*)data;
+	struct cx88_core *core = dev->core;
+	struct cx88_dmaqueue *q = &dev->vbiq;
+	struct cx88_buffer *buf;
+	unsigned long flags;
+
+	cx88_sram_channel_dump(dev->core, &cx88_sram_channels[SRAM_CH24]);
+
+	cx_clear(MO_VID_DMACNTRL, 0x88);
+	cx_clear(VID_CAPTURE_CONTROL, 0x18);
+
+	spin_lock_irqsave(&dev->slock,flags);
+	while (!list_empty(&q->active)) {
+		buf = list_entry(q->active.next, struct cx88_buffer, vb.queue);
+		list_del(&buf->vb.queue);
+		buf->vb.state = STATE_ERROR;
+		wake_up(&buf->vb.done);
+		printk("%s/0: [%p/%d] timeout - dma=0x%08lx\n", dev->core->name,
+		       buf, buf->vb.i, (unsigned long)buf->risc.dma);
+	}
+	cx8800_restart_vbi_queue(dev,q);
+	spin_unlock_irqrestore(&dev->slock,flags);
+}
+
+/* ------------------------------------------------------------------ */
+
+static int
+vbi_setup(struct videobuf_queue *q, unsigned int *count, unsigned int *size)
+{
+	*size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
+	if (0 == *count)
+		*count = vbibufs;
+	if (*count < 2)
+		*count = 2;
+	if (*count > 32)
+		*count = 32;
+	return 0;
+}
+
+static int
+vbi_prepare(struct videobuf_queue *q, struct videobuf_buffer *vb,
+	    enum v4l2_field field)
+{
+	struct cx8800_fh   *fh  = q->priv_data;
+	struct cx8800_dev  *dev = fh->dev;
+	struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
+	unsigned int size;
+	int rc;
+
+	size = VBI_LINE_COUNT * VBI_LINE_LENGTH * 2;
+	if (0 != buf->vb.baddr  &&  buf->vb.bsize < size)
+		return -EINVAL;
+
+	if (STATE_NEEDS_INIT == buf->vb.state) {
+		buf->vb.width  = VBI_LINE_LENGTH;
+		buf->vb.height = VBI_LINE_COUNT;
+		buf->vb.size   = size;
+		buf->vb.field  = V4L2_FIELD_SEQ_TB;
+
+		if (0 != (rc = videobuf_iolock(dev->pci,&buf->vb,NULL)))
+			goto fail;
+		cx88_risc_buffer(dev->pci, &buf->risc,
+				 buf->vb.dma.sglist,
+				 0, buf->vb.width * buf->vb.height,
+				 buf->vb.width, 0,
+				 buf->vb.height);
+	}
+	buf->vb.state = STATE_PREPARED;
+	return 0;
+
+ fail:
+	cx88_free_buffer(dev->pci,buf);
+	return rc;
+}
+
+static void
+vbi_queue(struct videobuf_queue *vq, struct videobuf_buffer *vb)
+{
+	struct cx88_buffer    *buf = container_of(vb,struct cx88_buffer,vb);
+	struct cx88_buffer    *prev;
+	struct cx8800_fh      *fh   = vq->priv_data;
+	struct cx8800_dev     *dev  = fh->dev;
+	struct cx88_dmaqueue  *q    = &dev->vbiq;
+
+	/* add jump to stopper */
+	buf->risc.jmp[0] = cpu_to_le32(RISC_JUMP | RISC_IRQ1 | RISC_CNT_INC);
+	buf->risc.jmp[1] = cpu_to_le32(q->stopper.dma);
+
+	if (list_empty(&q->active)) {
+		list_add_tail(&buf->vb.queue,&q->active);
+		cx8800_start_vbi_dma(dev, q, buf);
+		buf->vb.state = STATE_ACTIVE;
+		buf->count    = q->count++;
+		mod_timer(&q->timeout, jiffies+BUFFER_TIMEOUT);
+		dprintk(2,"[%p/%d] vbi_queue - first active\n",
+			buf, buf->vb.i);
+
+	} else {
+		prev = list_entry(q->active.prev, struct cx88_buffer, vb.queue);
+		list_add_tail(&buf->vb.queue,&q->active);
+		buf->vb.state = STATE_ACTIVE;
+		buf->count    = q->count++;
+		prev->risc.jmp[1] = cpu_to_le32(buf->risc.dma);
+		dprintk(2,"[%p/%d] buffer_queue - append to active\n",
+			buf, buf->vb.i);
+	}
+}
+
+static void vbi_release(struct videobuf_queue *q, struct videobuf_buffer *vb)
+{
+	struct cx88_buffer *buf = container_of(vb,struct cx88_buffer,vb);
+	struct cx8800_fh   *fh  = q->priv_data;
+
+	cx88_free_buffer(fh->dev->pci,buf);
+}
+
+struct videobuf_queue_ops cx8800_vbi_qops = {
+	.buf_setup    = vbi_setup,
+	.buf_prepare  = vbi_prepare,
+	.buf_queue    = vbi_queue,
+	.buf_release  = vbi_release,
+};
+
+/* ------------------------------------------------------------------ */
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */