1 files changed, 327 insertions, 0 deletions

diff --git a/drivers/media/pci/saa7134/saa7134-ts.c b/drivers/media/pci/saa7134/saa7134-ts.c
new file mode 100644
index 000000000000..2e3f4b412d8c
--- /dev/null
+++ b/drivers/media/pci/saa7134/saa7134-ts.c
@@ -0,0 +1,327 @@
+/*
+ *
+ * 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 <linux/delay.h>
+
+#include "saa7134-reg.h"
+#include "saa7134.h"
+
+/* ------------------------------------------------------------------ */
+
+static unsigned int ts_debug;
+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)
+{
+
+        dprintk("buffer_activate [%p]",buf);
+        buf->vb.state = VIDEOBUF_ACTIVE;
+        buf->top_seen = 0;
+
+        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));
+        }
+
+        /* start DMA */
+        saa7134_set_dmabits(dev);
+
+        mod_timer(&dev->ts_q.timeout, jiffies+TS_BUFFER_TIMEOUT);
+
+        if (!dev->ts_started)
+                saa7134_ts_start(dev);
+
+        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(q,buf);
+        }
+
+        if (VIDEOBUF_NEEDS_INIT == buf->vb.state) {
+
+                struct videobuf_dmabuf *dma=videobuf_to_dma(&buf->vb);
+
+                dprintk("buffer_prepare: needs_init\n");
+
+                buf->vb.width  = llength;
+                buf->vb.height = lines;
+                buf->vb.size   = size;
+                buf->pt        = &dev->ts.pt_ts;
+
+                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_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_buf *buf = container_of(vb,struct saa7134_buf,vb);
+        struct saa7134_dev *dev = q->priv_data;
+
+        if (dev->ts_started)
+                saa7134_ts_stop(dev);
+
+        saa7134_dma_free(q,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 = 8;
+module_param(tsbufs, int, 0444);
+MODULE_PARM_DESC(tsbufs, "number of ts buffers for read/write IO, range 2-32");
+
+static unsigned int ts_nr_packets = 64;
+module_param(ts_nr_packets, int, 0444);
+MODULE_PARM_DESC(ts_nr_packets,"size of a ts buffers (in ts packets)");
+
+int saa7134_ts_init_hw(struct saa7134_dev *dev)
+{
+        /* deactivate TS softreset */
+        saa_writeb(SAA7134_TS_SERIAL1, 0x00);
+        /* TSSOP high active, TSVAL high active, TSLOCK ignored */
+        saa_writeb(SAA7134_TS_PARALLEL, 0x6c);
+        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));
+        /* TSNOPIT=0, TSCOLAP=0 */
+        saa_writeb(SAA7134_TS_DMA2,
+                ((((dev->ts.nr_packets-1)>>16)&0x3f) | 0x00));
+
+        return 0;
+}
+
+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;
+        dev->ts_started            = 0;
+        saa7134_pgtable_alloc(dev->pci,&dev->ts.pt_ts);
+
+        /* init TS hw */
+        saa7134_ts_init_hw(dev);
+
+        return 0;
+}
+
+/* Function for stop TS */
+int saa7134_ts_stop(struct saa7134_dev *dev)
+{
+        dprintk("TS stop\n");
+
+        BUG_ON(!dev->ts_started);
+
+        /* Stop TS stream */
+        switch (saa7134_boards[dev->board].ts_type) {
+        case SAA7134_MPEG_TS_PARALLEL:
+                saa_writeb(SAA7134_TS_PARALLEL, 0x6c);
+                dev->ts_started = 0;
+                break;
+        case SAA7134_MPEG_TS_SERIAL:
+                saa_writeb(SAA7134_TS_SERIAL0, 0x40);
+                dev->ts_started = 0;
+                break;
+        }
+        return 0;
+}
+
+/* Function for start TS */
+int saa7134_ts_start(struct saa7134_dev *dev)
+{
+        dprintk("TS start\n");
+
+        BUG_ON(dev->ts_started);
+
+        /* dma: setup channel 5 (= TS) */
+        saa_writeb(SAA7134_TS_DMA0, (dev->ts.nr_packets - 1) & 0xff);
+        saa_writeb(SAA7134_TS_DMA1,
+                ((dev->ts.nr_packets - 1) >> 8) & 0xff);
+        /* TSNOPIT=0, TSCOLAP=0 */
+        saa_writeb(SAA7134_TS_DMA2,
+                (((dev->ts.nr_packets - 1) >> 16) & 0x3f) | 0x00);
+        saa_writel(SAA7134_RS_PITCH(5), TS_PACKET_SIZE);
+        saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_16 |
+                                          SAA7134_RS_CONTROL_ME |
+                                          (dev->ts.pt_ts.dma >> 12));
+
+        /* reset hardware TS buffers */
+        saa_writeb(SAA7134_TS_SERIAL1, 0x00);
+        saa_writeb(SAA7134_TS_SERIAL1, 0x03);
+        saa_writeb(SAA7134_TS_SERIAL1, 0x00);
+        saa_writeb(SAA7134_TS_SERIAL1, 0x01);
+
+        /* TS clock non-inverted */
+        saa_writeb(SAA7134_TS_SERIAL1, 0x00);
+
+        /* Start TS stream */
+        switch (saa7134_boards[dev->board].ts_type) {
+        case SAA7134_MPEG_TS_PARALLEL:
+                saa_writeb(SAA7134_TS_SERIAL0, 0x40);
+                saa_writeb(SAA7134_TS_PARALLEL, 0xec |
+                        (saa7134_boards[dev->board].ts_force_val << 4));
+                break;
+        case SAA7134_MPEG_TS_SERIAL:
+                saa_writeb(SAA7134_TS_SERIAL0, 0xd8);
+                saa_writeb(SAA7134_TS_PARALLEL, 0x6c |
+                        (saa7134_boards[dev->board].ts_force_val << 4));
+                saa_writeb(SAA7134_TS_PARALLEL_SERIAL, 0xbc);
+                saa_writeb(SAA7134_TS_SERIAL1, 0x02);
+                break;
+        }
+
+        dev->ts_started = 1;
+
+        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,VIDEOBUF_DONE);
+        }
+        saa7134_buffer_next(dev,&dev->ts_q);
+
+ done:
+        spin_unlock(&dev->slock);
+}
+
+/* ----------------------------------------------------------- */
+/*
+ * Local variables:
+ * c-basic-offset: 8
+ * End:
+ */