1 files changed, 371 insertions, 0 deletions

diff --git a/drivers/media/video/au0828/au0828-dvb.c b/drivers/media/video/au0828/au0828-dvb.c
new file mode 100644
index 000000000000..3c8a29eafc2d
--- /dev/null
+++ b/drivers/media/video/au0828/au0828-dvb.c
@@ -0,0 +1,371 @@
+/*
+ *  Driver for the Auvitek USB bridge
+ *
+ *  Copyright (c) 2008 Steven Toth <stoth@hauppauge.com>
+ *
+ *  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/module.h>
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/suspend.h>
+#include <media/v4l2-common.h>
+
+#include "au0828.h"
+
+#include "au8522.h"
+#include "xc5000.h"
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+unsigned int dvb_debug = 1;
+
+#define _dbg(level, fmt, arg...)\
+        do { if (dvb_debug >= level)\
+                printk(KERN_DEBUG "%s/0: " fmt, DRIVER_NAME, ## arg);\
+        } while (0)
+
+static struct au8522_config hauppauge_hvr950q_config = {
+        .demod_address = 0x8e >> 1,
+        .status_mode   = AU8522_DEMODLOCKING,
+};
+
+static struct xc5000_config hauppauge_hvr950q_tunerconfig = {
+        .i2c_address      = 0x61,
+        .if_khz           = 6000,
+        .tuner_callback   = au0828_tuner_callback
+};
+
+/*-------------------------------------------------------------------*/
+static void urb_completion(struct urb *purb)
+{
+        u8 *ptr;
+        struct au0828_dev *dev = purb->context;
+        int ptype = usb_pipetype(purb->pipe);
+
+        if (dev->urb_streaming == 0)
+                return;
+
+        if (ptype != PIPE_BULK) {
+                printk(KERN_ERR "%s() Unsupported URB type %d\n", __FUNCTION__, ptype);
+                return;
+        }
+
+        ptr = (u8 *)purb->transfer_buffer;
+
+        /* Feed the transport payload into the kernel demux */
+        dvb_dmx_swfilter_packets(&dev->dvb.demux, purb->transfer_buffer, purb->actual_length / 188);
+
+        /* Clean the buffer before we requeue */
+        memset(purb->transfer_buffer, 0, URB_BUFSIZE);
+
+        /* Requeue URB */
+        usb_submit_urb(purb, GFP_ATOMIC);
+}
+
+static int stop_urb_transfer(struct au0828_dev *dev)
+{
+        int i;
+
+        printk(KERN_INFO "%s()\n", __FUNCTION__);
+
+        /* FIXME:  Do we need to free the transfer_buffers? */
+        for (i = 0; i < URB_COUNT; i++) {
+                usb_kill_urb(dev->urbs[i]);
+                kfree(dev->urbs[i]->transfer_buffer);
+                usb_free_urb(dev->urbs[i]);
+        }
+
+        dev->urb_streaming = 0;
+
+        return 0;
+}
+
+#define _AU0828_BULKPIPE 0x83
+#define _BULKPIPESIZE 0xe522
+
+static int start_urb_transfer(struct au0828_dev *dev)
+{
+        struct urb *purb;
+        int i, ret = -ENOMEM;
+        unsigned int pipe = usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE);
+        int pipesize = usb_maxpacket(dev->usbdev, pipe, usb_pipeout(pipe));
+        int packets = _BULKPIPESIZE / pipesize;
+        int transfer_buflen = packets * pipesize;
+
+        printk(KERN_INFO "%s() transfer_buflen = %d\n", __FUNCTION__, transfer_buflen);
+
+        if (dev->urb_streaming) {
+                printk("%s: iso xfer already running!\n", __FUNCTION__);
+                return 0;
+        }
+
+        for (i = 0; i < URB_COUNT; i++) {
+
+                dev->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
+                if (!dev->urbs[i]) {
+                        goto err;
+                }
+
+                purb = dev->urbs[i];
+
+                purb->transfer_buffer = kzalloc(URB_BUFSIZE, GFP_KERNEL);
+                if (!purb->transfer_buffer) {
+                        usb_free_urb(purb);
+                        dev->urbs[i] = 0;
+                        goto err;
+                }
+
+                purb->status = -EINPROGRESS;
+                usb_fill_bulk_urb(purb,
+                                  dev->usbdev,
+                                  usb_rcvbulkpipe(dev->usbdev, _AU0828_BULKPIPE),
+                                  purb->transfer_buffer,
+                                  URB_BUFSIZE,
+                                  urb_completion,
+                                  dev);
+
+        }
+
+        for (i = 0; i < URB_COUNT; i++) {
+                ret = usb_submit_urb(dev->urbs[i], GFP_ATOMIC);
+                if (ret != 0) {
+                        stop_urb_transfer(dev);
+                        printk("%s: failed urb submission, err = %d\n", __FUNCTION__, ret);
+                        return ret;
+                }
+        }
+
+        dev->urb_streaming = 1;
+        ret = 0;
+
+err:
+        return ret;
+}
+
+static int au0828_dvb_start_feed(struct dvb_demux_feed *feed)
+{
+        struct dvb_demux *demux = feed->demux;
+        struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
+        struct au0828_dvb *dvb = &dev->dvb;
+        int ret = 0;
+
+        printk(KERN_INFO "%s() pid = 0x%x index = %d\n", __FUNCTION__, feed->pid, feed->index);
+
+        if (!demux->dmx.frontend)
+                return -EINVAL;
+
+        printk(KERN_INFO "%s() Preparing, feeding = %d\n", __FUNCTION__, dvb->feeding);
+        if (dvb) {
+                mutex_lock(&dvb->lock);
+                if (dvb->feeding++ == 0) {
+                        printk(KERN_INFO "%s() Starting Transport DMA\n",
+                                __FUNCTION__);
+                        au0828_write(dev, 0x608, 0x90);
+                        au0828_write(dev, 0x609, 0x72);
+                        au0828_write(dev, 0x60a, 0x71);
+                        au0828_write(dev, 0x60b, 0x01);
+                        ret = start_urb_transfer(dev);
+                }
+                mutex_unlock(&dvb->lock);
+        }
+
+        return ret;
+}
+
+static int au0828_dvb_stop_feed(struct dvb_demux_feed *feed)
+{
+        struct dvb_demux *demux = feed->demux;
+        struct au0828_dev *dev = (struct au0828_dev *) demux->priv;
+        struct au0828_dvb *dvb = &dev->dvb;
+        int ret = 0;
+
+        printk(KERN_INFO "%s() pid = 0x%x index = %d\n", __FUNCTION__, feed->pid, feed->index);
+
+        if (dvb) {
+                mutex_lock(&dvb->lock);
+                if (--dvb->feeding == 0) {
+                        printk(KERN_INFO "%s() Stopping Transport DMA\n",
+                                __FUNCTION__);
+                        au0828_write(dev, 0x608, 0x00);
+                        au0828_write(dev, 0x609, 0x00);
+                        au0828_write(dev, 0x60a, 0x00);
+                        au0828_write(dev, 0x60b, 0x00);
+                        ret = stop_urb_transfer(dev);
+                }
+                mutex_unlock(&dvb->lock);
+        }
+
+        return ret;
+}
+
+int dvb_register(struct au0828_dev *dev)
+{
+        struct au0828_dvb *dvb = &dev->dvb;
+        int result;
+
+        /* register adapter */
+        result = dvb_register_adapter(&dvb->adapter, DRIVER_NAME, THIS_MODULE,
+                                      &dev->usbdev->dev, adapter_nr);
+        if (result < 0) {
+                printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
+                       DRIVER_NAME, result);
+                goto fail_adapter;
+        }
+        dvb->adapter.priv = dev;
+
+        /* register frontend */
+        result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
+        if (result < 0) {
+                printk(KERN_WARNING "%s: dvb_register_frontend failed (errno = %d)\n",
+                       DRIVER_NAME, result);
+                goto fail_frontend;
+        }
+
+        /* register demux stuff */
+        dvb->demux.dmx.capabilities =
+                DMX_TS_FILTERING | DMX_SECTION_FILTERING |
+                DMX_MEMORY_BASED_FILTERING;
+        dvb->demux.priv       = dev;
+        dvb->demux.filternum  = 256;
+        dvb->demux.feednum    = 256;
+        dvb->demux.start_feed = au0828_dvb_start_feed;
+        dvb->demux.stop_feed  = au0828_dvb_stop_feed;
+        result = dvb_dmx_init(&dvb->demux);
+        if (result < 0) {
+                printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
+                       DRIVER_NAME, result);
+                goto fail_dmx;
+        }
+
+        dvb->dmxdev.filternum    = 256;
+        dvb->dmxdev.demux        = &dvb->demux.dmx;
+        dvb->dmxdev.capabilities = 0;
+        result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
+        if (result < 0) {
+                printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
+                       DRIVER_NAME, result);
+                goto fail_dmxdev;
+        }
+
+        dvb->fe_hw.source = DMX_FRONTEND_0;
+        result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+        if (result < 0) {
+                printk(KERN_WARNING "%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
+                       DRIVER_NAME, result);
+                goto fail_fe_hw;
+        }
+
+        dvb->fe_mem.source = DMX_MEMORY_FE;
+        result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
+        if (result < 0) {
+                printk(KERN_WARNING "%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
+                       DRIVER_NAME, result);
+                goto fail_fe_mem;
+        }
+
+        result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+        if (result < 0) {
+                printk(KERN_WARNING "%s: connect_frontend failed (errno = %d)\n",
+                       DRIVER_NAME, result);
+                goto fail_fe_conn;
+        }
+
+        /* register network adapter */
+        dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
+        return 0;
+
+fail_fe_conn:
+        dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
+fail_fe_mem:
+        dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+fail_fe_hw:
+        dvb_dmxdev_release(&dvb->dmxdev);
+fail_dmxdev:
+        dvb_dmx_release(&dvb->demux);
+fail_dmx:
+        dvb_unregister_frontend(dvb->frontend);
+fail_frontend:
+        dvb_frontend_detach(dvb->frontend);
+        dvb_unregister_adapter(&dvb->adapter);
+fail_adapter:
+        return result;
+}
+
+void au0828_dvb_unregister(struct au0828_dev *dev)
+{
+        struct au0828_dvb *dvb = &dev->dvb;
+
+        dvb_net_release(&dvb->net);
+        dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
+        dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
+        dvb_dmxdev_release(&dvb->dmxdev);
+        dvb_dmx_release(&dvb->demux);
+        dvb_unregister_frontend(dvb->frontend);
+        dvb_frontend_detach(dvb->frontend);
+        dvb_unregister_adapter(&dvb->adapter);
+}
+
+/* All the DVB attach calls go here, this function get's modified
+ * for each new card. No other function in this file needs
+ * to change.
+ */
+int au0828_dvb_register(struct au0828_dev *dev)
+{
+        struct au0828_dvb *dvb = &dev->dvb;
+        int ret;
+
+        /* init frontend */
+        switch (dev->board) {
+        case AU0828_BOARD_HAUPPAUGE_HVR850:
+        case AU0828_BOARD_HAUPPAUGE_HVR950Q:
+        case AU0828_BOARD_DVICO_FUSIONHDTV7:
+                dvb->frontend = dvb_attach(au8522_attach,
+                                &hauppauge_hvr950q_config,
+                                &dev->i2c_adap);
+                if (dvb->frontend != NULL) {
+                        hauppauge_hvr950q_tunerconfig.priv = dev;
+                        dvb_attach(xc5000_attach, dvb->frontend,
+                                &dev->i2c_adap,
+                                &hauppauge_hvr950q_tunerconfig);
+                }
+                break;
+        default:
+                printk("The frontend of your DVB/ATSC card isn't supported yet\n");
+                break;
+        }
+        if (NULL == dvb->frontend) {
+                printk("Frontend initialization failed\n");
+                return -1;
+        }
+
+        /* Put the analog decoder in standby to keep it quiet */
+        au0828_call_i2c_clients(dev, TUNER_SET_STANDBY, NULL);
+
+        if (dvb->frontend->ops.analog_ops.standby)
+                dvb->frontend->ops.analog_ops.standby(dvb->frontend);
+
+        /* register everything */
+        ret = dvb_register(dev);
+        if (ret < 0) {
+                if (dvb->frontend->ops.release)
+                        dvb->frontend->ops.release(dvb->frontend);
+                return ret;
+        }
+
+        return 0;
+}