6ae635c4f3
Although the code is getting the better alternates, it is not really using it. Get the interface/alternate numbers and use it where needed. This patch implements also one small fix at the last_line set, as proposed by Bee Hock Goh <behock@gmail.com>. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
347 lines
8.3 KiB
C
347 lines
8.3 KiB
C
/*
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tm6000-dvb.c - dvb-t support for TM5600/TM6000/TM6010 USB video capture devices
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Copyright (C) 2007 Michel Ludwig <michel.ludwig@gmail.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation version 2
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <linux/kernel.h>
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#include <linux/usb.h>
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#include "tm6000.h"
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#include "tm6000-regs.h"
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#include "zl10353.h"
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#include <media/tuner.h>
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#include "tuner-xc2028.h"
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static void inline print_err_status (struct tm6000_core *dev,
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int packet, int status)
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{
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char *errmsg = "Unknown";
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switch(status) {
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case -ENOENT:
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errmsg = "unlinked synchronuously";
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break;
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case -ECONNRESET:
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errmsg = "unlinked asynchronuously";
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break;
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case -ENOSR:
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errmsg = "Buffer error (overrun)";
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break;
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case -EPIPE:
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errmsg = "Stalled (device not responding)";
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break;
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case -EOVERFLOW:
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errmsg = "Babble (bad cable?)";
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break;
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case -EPROTO:
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errmsg = "Bit-stuff error (bad cable?)";
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break;
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case -EILSEQ:
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errmsg = "CRC/Timeout (could be anything)";
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break;
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case -ETIME:
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errmsg = "Device does not respond";
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break;
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}
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if (packet<0) {
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dprintk(dev, 1, "URB status %d [%s].\n",
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status, errmsg);
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} else {
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dprintk(dev, 1, "URB packet %d, status %d [%s].\n",
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packet, status, errmsg);
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}
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}
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static void tm6000_urb_received(struct urb *urb)
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{
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int ret;
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struct tm6000_core* dev = urb->context;
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if(urb->status != 0) {
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print_err_status (dev,0,urb->status);
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}
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else if(urb->actual_length>0){
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dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer,
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urb->actual_length);
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}
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if(dev->dvb->streams > 0) {
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ret = usb_submit_urb(urb, GFP_ATOMIC);
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if(ret < 0) {
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printk(KERN_ERR "tm6000: error %s\n", __FUNCTION__);
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kfree(urb->transfer_buffer);
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usb_free_urb(urb);
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}
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}
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}
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int tm6000_start_stream(struct tm6000_core *dev)
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{
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int ret;
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unsigned int pipe, size;
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struct tm6000_dvb *dvb = dev->dvb;
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printk(KERN_INFO "tm6000: got start stream request %s\n",__FUNCTION__);
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tm6000_init_digital_mode(dev);
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dvb->bulk_urb = usb_alloc_urb(0, GFP_KERNEL);
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if(dvb->bulk_urb == NULL) {
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printk(KERN_ERR "tm6000: couldn't allocate urb\n");
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return -ENOMEM;
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}
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pipe = usb_rcvbulkpipe(dev->udev, dev->bulk_in.endp->desc.bEndpointAddress
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& USB_ENDPOINT_NUMBER_MASK);
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size = usb_maxpacket(dev->udev, pipe, usb_pipeout(pipe));
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size = size * 15; /* 512 x 8 or 12 or 15 */
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dvb->bulk_urb->transfer_buffer = kzalloc(size, GFP_KERNEL);
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if(dvb->bulk_urb->transfer_buffer == NULL) {
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usb_free_urb(dvb->bulk_urb);
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printk(KERN_ERR "tm6000: couldn't allocate transfer buffer!\n");
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return -ENOMEM;
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}
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usb_fill_bulk_urb(dvb->bulk_urb, dev->udev, pipe,
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dvb->bulk_urb->transfer_buffer,
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size,
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tm6000_urb_received, dev);
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ret = usb_clear_halt(dev->udev, pipe);
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if(ret < 0) {
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printk(KERN_ERR "tm6000: error %i in %s during pipe reset\n",ret,__FUNCTION__);
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return ret;
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}
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else {
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printk(KERN_ERR "tm6000: pipe resetted\n");
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}
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/* mutex_lock(&tm6000_driver.open_close_mutex); */
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ret = usb_submit_urb(dvb->bulk_urb, GFP_KERNEL);
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/* mutex_unlock(&tm6000_driver.open_close_mutex); */
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if (ret) {
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printk(KERN_ERR "tm6000: submit of urb failed (error=%i)\n",ret);
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kfree(dvb->bulk_urb->transfer_buffer);
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usb_free_urb(dvb->bulk_urb);
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return ret;
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}
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return 0;
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}
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void tm6000_stop_stream(struct tm6000_core *dev)
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{
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struct tm6000_dvb *dvb = dev->dvb;
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if(dvb->bulk_urb) {
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printk (KERN_INFO "urb killing\n");
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usb_kill_urb(dvb->bulk_urb);
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printk (KERN_INFO "urb buffer free\n");
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kfree(dvb->bulk_urb->transfer_buffer);
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usb_free_urb(dvb->bulk_urb);
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dvb->bulk_urb = NULL;
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}
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}
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int tm6000_start_feed(struct dvb_demux_feed *feed)
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{
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struct dvb_demux *demux = feed->demux;
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struct tm6000_core *dev = demux->priv;
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struct tm6000_dvb *dvb = dev->dvb;
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printk(KERN_INFO "tm6000: got start feed request %s\n",__FUNCTION__);
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mutex_lock(&dvb->mutex);
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if(dvb->streams == 0) {
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dvb->streams = 1;
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/* mutex_init(&tm6000_dev->streming_mutex); */
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tm6000_start_stream(dev);
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}
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else {
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++(dvb->streams);
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}
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mutex_unlock(&dvb->mutex);
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return 0;
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}
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int tm6000_stop_feed(struct dvb_demux_feed *feed) {
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struct dvb_demux *demux = feed->demux;
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struct tm6000_core *dev = demux->priv;
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struct tm6000_dvb *dvb = dev->dvb;
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printk(KERN_INFO "tm6000: got stop feed request %s\n",__FUNCTION__);
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mutex_lock(&dvb->mutex);
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printk (KERN_INFO "stream %#x\n", dvb->streams);
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--(dvb->streams);
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if(dvb->streams == 0) {
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printk (KERN_INFO "stop stream\n");
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tm6000_stop_stream(dev);
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/* mutex_destroy(&tm6000_dev->streaming_mutex); */
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}
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mutex_unlock(&dvb->mutex);
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/* mutex_destroy(&tm6000_dev->streaming_mutex); */
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return 0;
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}
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int tm6000_dvb_attach_frontend(struct tm6000_core *dev)
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{
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struct tm6000_dvb *dvb = dev->dvb;
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if(dev->caps.has_zl10353) {
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struct zl10353_config config =
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{.demod_address = dev->demod_addr,
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.no_tuner = 1,
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.parallel_ts = 1,
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.if2 = 45700,
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.disable_i2c_gate_ctrl = 1,
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};
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dvb->frontend = dvb_attach(zl10353_attach, &config,
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&dev->i2c_adap);
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}
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else {
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printk(KERN_ERR "tm6000: no frontend defined for the device!\n");
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return -1;
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}
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return (!dvb->frontend) ? -1 : 0;
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}
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DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
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int tm6000_dvb_register(struct tm6000_core *dev)
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{
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int ret = -1;
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struct tm6000_dvb *dvb = dev->dvb;
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mutex_init(&dvb->mutex);
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dvb->streams = 0;
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/* attach the frontend */
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ret = tm6000_dvb_attach_frontend(dev);
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if(ret < 0) {
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printk(KERN_ERR "tm6000: couldn't attach the frontend!\n");
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goto err;
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}
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ret = dvb_register_adapter(&dvb->adapter, "Trident TVMaster 6000 DVB-T",
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THIS_MODULE, &dev->udev->dev, adapter_nr);
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dvb->adapter.priv = dev;
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if (dvb->frontend) {
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struct xc2028_config cfg = {
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.i2c_adap = &dev->i2c_adap,
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.i2c_addr = dev->tuner_addr,
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};
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dvb->frontend->callback = tm6000_tuner_callback;
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ret = dvb_register_frontend(&dvb->adapter, dvb->frontend);
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if (ret < 0) {
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printk(KERN_ERR
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"tm6000: couldn't register frontend\n");
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goto adapter_err;
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}
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if (!dvb_attach(xc2028_attach, dvb->frontend, &cfg)) {
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printk(KERN_ERR "tm6000: couldn't register "
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"frontend (xc3028)\n");
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ret = -EINVAL;
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goto frontend_err;
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}
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printk(KERN_INFO "tm6000: XC2028/3028 asked to be "
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"attached to frontend!\n");
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} else {
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printk(KERN_ERR "tm6000: no frontend found\n");
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}
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dvb->demux.dmx.capabilities = DMX_TS_FILTERING | DMX_SECTION_FILTERING
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| DMX_MEMORY_BASED_FILTERING;
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dvb->demux.priv = dev;
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dvb->demux.filternum = 8;
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dvb->demux.feednum = 8;
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dvb->demux.start_feed = tm6000_start_feed;
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dvb->demux.stop_feed = tm6000_stop_feed;
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dvb->demux.write_to_decoder = NULL;
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ret = dvb_dmx_init(&dvb->demux);
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if(ret < 0) {
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printk("tm6000: dvb_dmx_init failed (errno = %d)\n", ret);
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goto frontend_err;
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}
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dvb->dmxdev.filternum = dev->dvb->demux.filternum;
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dvb->dmxdev.demux = &dev->dvb->demux.dmx;
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dvb->dmxdev.capabilities = 0;
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ret = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
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if(ret < 0) {
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printk("tm6000: dvb_dmxdev_init failed (errno = %d)\n", ret);
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goto dvb_dmx_err;
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}
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return 0;
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dvb_dmx_err:
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dvb_dmx_release(&dvb->demux);
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frontend_err:
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if(dvb->frontend) {
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dvb_frontend_detach(dvb->frontend);
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dvb_unregister_frontend(dvb->frontend);
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}
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adapter_err:
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dvb_unregister_adapter(&dvb->adapter);
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err:
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return ret;
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}
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void tm6000_dvb_unregister(struct tm6000_core *dev)
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{
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struct tm6000_dvb *dvb = dev->dvb;
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if(dvb->bulk_urb != NULL) {
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struct urb *bulk_urb = dvb->bulk_urb;
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kfree(bulk_urb->transfer_buffer);
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bulk_urb->transfer_buffer = NULL;
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usb_unlink_urb(bulk_urb);
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usb_free_urb(bulk_urb);
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}
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/* mutex_lock(&tm6000_driver.open_close_mutex); */
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if(dvb->frontend) {
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dvb_frontend_detach(dvb->frontend);
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dvb_unregister_frontend(dvb->frontend);
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}
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dvb_dmxdev_release(&dvb->dmxdev);
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dvb_dmx_release(&dvb->demux);
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dvb_unregister_adapter(&dvb->adapter);
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mutex_destroy(&dvb->mutex);
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/* mutex_unlock(&tm6000_driver.open_close_mutex); */
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}
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