Added missing tegra files.HEADmaster

1 files changed, 255 insertions, 0 deletions

diff --git a/drivers/media/video/saa7134/saa7134-vbi.c b/drivers/media/video/saa7134/saa7134-vbi.c
new file mode 100644
index 00000000000..e9aa94b807f
--- /dev/null
+++ b/drivers/media/video/saa7134/saa7134-vbi.c
@@ -0,0 +1,255 @@
+/*
+ *
+ * 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:
+ */