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path: root/drivers/media/video/tm6000/tm6000-dvb.c
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Diffstat (limited to 'drivers/media/video/tm6000/tm6000-dvb.c')
-rw-r--r--drivers/media/video/tm6000/tm6000-dvb.c452
1 files changed, 452 insertions, 0 deletions
diff --git a/drivers/media/video/tm6000/tm6000-dvb.c b/drivers/media/video/tm6000/tm6000-dvb.c
new file mode 100644
index 000000000000..5e6c129a4beb
--- /dev/null
+++ b/drivers/media/video/tm6000/tm6000-dvb.c
@@ -0,0 +1,452 @@
+/*
+ * tm6000-dvb.c - dvb-t support for TM5600/TM6000/TM6010 USB video capture devices
+ *
+ * Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.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 version 2
+ *
+ * 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/kernel.h>
+#include <linux/slab.h>
+#include <linux/usb.h>
+
+#include "tm6000.h"
+#include "tm6000-regs.h"
+
+#include "zl10353.h"
+
+#include <media/tuner.h>
+
+#include "tuner-xc2028.h"
+#include "xc5000.h"
+
+MODULE_DESCRIPTION("DVB driver extension module for tm5600/6000/6010 based TV cards");
+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@redhat.com>");
+MODULE_LICENSE("GPL");
+
+MODULE_SUPPORTED_DEVICE("{{Trident, tm5600},"
+ "{{Trident, tm6000},"
+ "{{Trident, tm6010}");
+
+static int debug;
+
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable debug message");
+
+static inline void print_err_status(struct tm6000_core *dev,
+ int packet, int status)
+{
+ char *errmsg = "Unknown";
+
+ switch (status) {
+ case -ENOENT:
+ errmsg = "unlinked synchronuously";
+ break;
+ case -ECONNRESET:
+ errmsg = "unlinked asynchronuously";
+ break;
+ case -ENOSR:
+ errmsg = "Buffer error (overrun)";
+ break;
+ case -EPIPE:
+ errmsg = "Stalled (device not responding)";
+ break;
+ case -EOVERFLOW:
+ errmsg = "Babble (bad cable?)";
+ break;
+ case -EPROTO:
+ errmsg = "Bit-stuff error (bad cable?)";
+ break;
+ case -EILSEQ:
+ errmsg = "CRC/Timeout (could be anything)";
+ break;
+ case -ETIME:
+ errmsg = "Device does not respond";
+ break;
+ }
+ if (packet < 0) {
+ dprintk(dev, 1, "URB status %d [%s].\n",
+ status, errmsg);
+ } else {
+ dprintk(dev, 1, "URB packet %d, status %d [%s].\n",
+ packet, status, errmsg);
+ }
+}
+
+static void tm6000_urb_received(struct urb *urb)
+{
+ int ret;
+ struct tm6000_core *dev = urb->context;
+
+ if (urb->status != 0)
+ print_err_status(dev, 0, urb->status);
+ else if (urb->actual_length > 0)
+ dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
+ urb->actual_length);
+
+ if (dev->dvb->streams > 0) {
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret < 0) {
+ printk(KERN_ERR "tm6000: error %s\n", __func__);
+ kfree(urb->transfer_buffer);
+ usb_free_urb(urb);
+ }
+ }
+}
+
+static int tm6000_start_stream(struct tm6000_core *dev)
+{
+ int ret;
+ unsigned int pipe, size;
+ struct tm6000_dvb *dvb = dev->dvb;
+
+ printk(KERN_INFO "tm6000: got start stream request %s\n", __func__);
+
+ if (dev->mode != TM6000_MODE_DIGITAL) {
+ tm6000_init_digital_mode(dev);
+ dev->mode = TM6000_MODE_DIGITAL;
+ }
+
+ dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
+ if (dvb->bulk_urb == NULL) {
+ printk(KERN_ERR "tm6000: couldn't allocate urb\n");
+ return -ENOMEM;
+ }
+
+ pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
+ & USB_ENDPOINT_NUMBER_MASK);
+
+ size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
+ size = size * 15; /* 512 x 8 or 12 or 15 */
+
+ dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
+ if (dvb->bulk_urb->transfer_buffer == NULL) {
+ usb_free_urb(dvb->bulk_urb);
+ printk(KERN_ERR "tm6000: couldn't allocate transfer buffer!\n");
+ return -ENOMEM;
+ }
+
+ usb_fill_bulk_urb(dvb->bulk_urb, dev->udev, pipe,
+ dvb->bulk_urb->transfer_buffer,
+ size,
+ tm6000_urb_received, dev);
+
+ ret = usb_clear_halt(dev->udev, pipe);
+ if (ret < 0) {
+ printk(KERN_ERR "tm6000: error %i in %s during pipe reset\n",
+ ret, __func__);
+ return ret;
+ } else
+ printk(KERN_ERR "tm6000: pipe resetted\n");
+
+/* mutex_lock(&tm6000_driver.open_close_mutex); */
+ ret = usb_submit_urb(dvb->bulk_urb, GFP_KERNEL);
+
+/* mutex_unlock(&tm6000_driver.open_close_mutex); */
+ if (ret) {
+ printk(KERN_ERR "tm6000: submit of urb failed (error=%i)\n",
+ ret);
+
+ kfree(dvb->bulk_urb->transfer_buffer);
+ usb_free_urb(dvb->bulk_urb);
+ return ret;
+ }
+
+ return 0;
+}
+
+static void tm6000_stop_stream(struct tm6000_core *dev)
+{
+ struct tm6000_dvb *dvb = dev->dvb;
+
+ if (dvb->bulk_urb) {
+ printk(KERN_INFO "urb killing\n");
+ usb_kill_urb(dvb->bulk_urb);
+ printk(KERN_INFO "urb buffer free\n");
+ kfree(dvb->bulk_urb->transfer_buffer);
+ usb_free_urb(dvb->bulk_urb);
+ dvb->bulk_urb = NULL;
+ }
+}
+
+static int tm6000_start_feed(struct dvb_demux_feed *feed)
+{
+ struct dvb_demux *demux = feed->demux;
+ struct tm6000_core *dev = demux->priv;
+ struct tm6000_dvb *dvb = dev->dvb;
+ printk(KERN_INFO "tm6000: got start feed request %s\n", __func__);
+
+ mutex_lock(&dvb->mutex);
+ if (dvb->streams == 0) {
+ dvb->streams = 1;
+/* mutex_init(&tm6000_dev->streming_mutex); */
+ tm6000_start_stream(dev);
+ } else
+ ++(dvb->streams);
+ mutex_unlock(&dvb->mutex);
+
+ return 0;
+}
+
+static int tm6000_stop_feed(struct dvb_demux_feed *feed)
+{
+ struct dvb_demux *demux = feed->demux;
+ struct tm6000_core *dev = demux->priv;
+ struct tm6000_dvb *dvb = dev->dvb;
+
+ printk(KERN_INFO "tm6000: got stop feed request %s\n", __func__);
+
+ mutex_lock(&dvb->mutex);
+
+ printk(KERN_INFO "stream %#x\n", dvb->streams);
+ --(dvb->streams);
+ if (dvb->streams == 0) {
+ printk(KERN_INFO "stop stream\n");
+ tm6000_stop_stream(dev);
+/* mutex_destroy(&tm6000_dev->streaming_mutex); */
+ }
+ mutex_unlock(&dvb->mutex);
+/* mutex_destroy(&tm6000_dev->streaming_mutex); */
+
+ return 0;
+}
+
+static int tm6000_dvb_attach_frontend(struct tm6000_core *dev)
+{
+ struct tm6000_dvb *dvb = dev->dvb;
+
+ if (dev->caps.has_zl10353) {
+ struct zl10353_config config = {
+ .demod_address = dev->demod_addr,
+ .no_tuner = 1,
+ .parallel_ts = 1,
+ .if2 = 45700,
+ .disable_i2c_gate_ctrl = 1,
+ };
+
+ dvb->frontend = dvb_attach(zl10353_attach, &config,
+ &dev->i2c_adap);
+ } else {
+ printk(KERN_ERR "tm6000: no frontend defined for the device!\n");
+ return -1;
+ }
+
+ return (!dvb->frontend) ? -1 : 0;
+}
+
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
+static int register_dvb(struct tm6000_core *dev)
+{
+ int ret = -1;
+ struct tm6000_dvb *dvb = dev->dvb;
+
+ mutex_init(&dvb->mutex);
+
+ dvb->streams = 0;
+
+ /* attach the frontend */
+ ret = tm6000_dvb_attach_frontend(dev);
+ if (ret < 0) {
+ printk(KERN_ERR "tm6000: couldn't attach the frontend!\n");
+ goto err;
+ }
+
+ ret = dvb_register_adapter(&dvb->adapter, "Trident TVMaster 6000 DVB-T",
+ THIS_MODULE, &dev->udev->dev, adapter_nr);
+ dvb->adapter.priv = dev;
+
+ if (dvb->frontend) {
+ switch (dev->tuner_type) {
+ case TUNER_XC2028: {
+ struct xc2028_config cfg = {
+ .i2c_adap = &dev->i2c_adap,
+ .i2c_addr = dev->tuner_addr,
+ };
+
+ dvb->frontend->callback = tm6000_tuner_callback;
+ ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
+ if (ret < 0) {
+ printk(KERN_ERR
+ "tm6000: couldn't register frontend\n");
+ goto adapter_err;
+ }
+
+ if (!dvb_attach(xc2028_attach, dvb->frontend, &cfg)) {
+ printk(KERN_ERR "tm6000: couldn't register "
+ "frontend (xc3028)\n");
+ ret = -EINVAL;
+ goto frontend_err;
+ }
+ printk(KERN_INFO "tm6000: XC2028/3028 asked to be "
+ "attached to frontend!\n");
+ break;
+ }
+ case TUNER_XC5000: {
+ struct xc5000_config cfg = {
+ .i2c_address = dev->tuner_addr,
+ };
+
+ dvb->frontend->callback = tm6000_xc5000_callback;
+ ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
+ if (ret < 0) {
+ printk(KERN_ERR
+ "tm6000: couldn't register frontend\n");
+ goto adapter_err;
+ }
+
+ if (!dvb_attach(xc5000_attach, dvb->frontend, &dev->i2c_adap, &cfg)) {
+ printk(KERN_ERR "tm6000: couldn't register "
+ "frontend (xc5000)\n");
+ ret = -EINVAL;
+ goto frontend_err;
+ }
+ printk(KERN_INFO "tm6000: XC5000 asked to be "
+ "attached to frontend!\n");
+ break;
+ }
+ }
+ } else
+ printk(KERN_ERR "tm6000: no frontend found\n");
+
+ dvb->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING
+ | DMX_MEMORY_BASED_FILTERING;
+ dvb->demux.priv = dev;
+ dvb->demux.filternum = 8;
+ dvb->demux.feednum = 8;
+ dvb->demux.start_feed = tm6000_start_feed;
+ dvb->demux.stop_feed = tm6000_stop_feed;
+ dvb->demux.write_to_decoder = NULL;
+ ret = dvb_dmx_init(&dvb->demux);
+ if (ret < 0) {
+ printk(KERN_ERR "tm6000: dvb_dmx_init failed (errno = %d)\n", ret);
+ goto frontend_err;
+ }
+
+ dvb->dmxdev.filternum = dev->dvb->demux.filternum;
+ dvb->dmxdev.demux = &dev->dvb->demux.dmx;
+ dvb->dmxdev.capabilities = 0;
+
+ ret = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
+ if (ret < 0) {
+ printk(KERN_ERR "tm6000: dvb_dmxdev_init failed (errno = %d)\n", ret);
+ goto dvb_dmx_err;
+ }
+
+ return 0;
+
+dvb_dmx_err:
+ dvb_dmx_release(&dvb->demux);
+frontend_err:
+ if (dvb->frontend) {
+ dvb_frontend_detach(dvb->frontend);
+ dvb_unregister_frontend(dvb->frontend);
+ }
+adapter_err:
+ dvb_unregister_adapter(&dvb->adapter);
+err:
+ return ret;
+}
+
+static void unregister_dvb(struct tm6000_core *dev)
+{
+ struct tm6000_dvb *dvb = dev->dvb;
+
+ if (dvb->bulk_urb != NULL) {
+ struct urb *bulk_urb = dvb->bulk_urb;
+
+ kfree(bulk_urb->transfer_buffer);
+ bulk_urb->transfer_buffer = NULL;
+ usb_unlink_urb(bulk_urb);
+ usb_free_urb(bulk_urb);
+ }
+
+/* mutex_lock(&tm6000_driver.open_close_mutex); */
+ if (dvb->frontend) {
+ dvb_frontend_detach(dvb->frontend);
+ dvb_unregister_frontend(dvb->frontend);
+ }
+
+ dvb_dmxdev_release(&dvb->dmxdev);
+ dvb_dmx_release(&dvb->demux);
+ dvb_unregister_adapter(&dvb->adapter);
+ mutex_destroy(&dvb->mutex);
+/* mutex_unlock(&tm6000_driver.open_close_mutex); */
+}
+
+static int dvb_init(struct tm6000_core *dev)
+{
+ struct tm6000_dvb *dvb;
+ int rc;
+
+ if (!dev)
+ return 0;
+
+ if (!dev->caps.has_dvb)
+ return 0;
+
+ dvb = kzalloc(sizeof(struct tm6000_dvb), GFP_KERNEL);
+ if (!dvb) {
+ printk(KERN_INFO "Cannot allocate memory\n");
+ return -ENOMEM;
+ }
+
+ dev->dvb = dvb;
+
+ rc = register_dvb(dev);
+ if (rc < 0) {
+ kfree(dvb);
+ dev->dvb = NULL;
+ return 0;
+ }
+
+ return 0;
+}
+
+static int dvb_fini(struct tm6000_core *dev)
+{
+ if (!dev)
+ return 0;
+
+ if (!dev->caps.has_dvb)
+ return 0;
+
+ if (dev->dvb) {
+ unregister_dvb(dev);
+ kfree(dev->dvb);
+ dev->dvb = NULL;
+ }
+
+ return 0;
+}
+
+static struct tm6000_ops dvb_ops = {
+ .type = TM6000_DVB,
+ .name = "TM6000 dvb Extension",
+ .init = dvb_init,
+ .fini = dvb_fini,
+};
+
+static int __init tm6000_dvb_register(void)
+{
+ return tm6000_register_extension(&dvb_ops);
+}
+
+static void __exit tm6000_dvb_unregister(void)
+{
+ tm6000_unregister_extension(&dvb_ops);
+}
+
+module_init(tm6000_dvb_register);
+module_exit(tm6000_dvb_unregister);