561 lines
13 KiB
C
561 lines
13 KiB
C
/*
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DVB device driver for cx231xx
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Copyright (C) 2008 <srinivasa.deevi at conexant dot com>
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Based on em28xx driver
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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; either version 2 of the License, or
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(at your option) any later version.
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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/slab.h>
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#include <linux/usb.h>
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#include "cx231xx.h"
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#include <media/v4l2-common.h>
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#include <media/videobuf-vmalloc.h>
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#include "xc5000.h"
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#include "dvb_dummy_fe.h"
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MODULE_DESCRIPTION("driver for cx231xx based DVB cards");
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MODULE_AUTHOR("Srinivasa Deevi <srinivasa.deevi@conexant.com>");
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MODULE_LICENSE("GPL");
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static unsigned int debug;
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module_param(debug, int, 0644);
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MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
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DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
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#define dprintk(level, fmt, arg...) do { \
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if (debug >= level) \
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printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
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} while (0)
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#define CX231XX_DVB_NUM_BUFS 5
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#define CX231XX_DVB_MAX_PACKETSIZE 564
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#define CX231XX_DVB_MAX_PACKETS 64
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struct cx231xx_dvb {
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struct dvb_frontend *frontend;
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/* feed count management */
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struct mutex lock;
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int nfeeds;
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/* general boilerplate stuff */
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struct dvb_adapter adapter;
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struct dvb_demux demux;
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struct dmxdev dmxdev;
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struct dmx_frontend fe_hw;
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struct dmx_frontend fe_mem;
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struct dvb_net net;
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};
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static inline void print_err_status(struct cx231xx *dev, 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(1, "URB status %d [%s].\n", status, errmsg);
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} else {
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dprintk(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 inline int dvb_isoc_copy(struct cx231xx *dev, struct urb *urb)
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{
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int i;
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if (!dev)
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return 0;
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if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
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return 0;
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if (urb->status < 0) {
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print_err_status(dev, -1, urb->status);
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if (urb->status == -ENOENT)
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return 0;
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}
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for (i = 0; i < urb->number_of_packets; i++) {
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int status = urb->iso_frame_desc[i].status;
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if (status < 0) {
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print_err_status(dev, i, status);
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if (urb->iso_frame_desc[i].status != -EPROTO)
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continue;
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}
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dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
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urb->iso_frame_desc[i].offset,
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urb->iso_frame_desc[i].actual_length);
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}
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return 0;
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}
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static int start_streaming(struct cx231xx_dvb *dvb)
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{
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int rc;
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struct cx231xx *dev = dvb->adapter.priv;
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usb_set_interface(dev->udev, 0, 1);
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rc = cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
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if (rc < 0)
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return rc;
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return cx231xx_init_isoc(dev, CX231XX_DVB_MAX_PACKETS,
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CX231XX_DVB_NUM_BUFS,
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CX231XX_DVB_MAX_PACKETSIZE, dvb_isoc_copy);
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}
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static int stop_streaming(struct cx231xx_dvb *dvb)
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{
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struct cx231xx *dev = dvb->adapter.priv;
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cx231xx_uninit_isoc(dev);
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cx231xx_set_mode(dev, CX231XX_SUSPEND);
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return 0;
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}
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static int 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 cx231xx_dvb *dvb = demux->priv;
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int rc, ret;
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if (!demux->dmx.frontend)
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return -EINVAL;
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mutex_lock(&dvb->lock);
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dvb->nfeeds++;
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rc = dvb->nfeeds;
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if (dvb->nfeeds == 1) {
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ret = start_streaming(dvb);
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if (ret < 0)
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rc = ret;
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}
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mutex_unlock(&dvb->lock);
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return rc;
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}
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static int stop_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 cx231xx_dvb *dvb = demux->priv;
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int err = 0;
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mutex_lock(&dvb->lock);
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dvb->nfeeds--;
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if (0 == dvb->nfeeds)
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err = stop_streaming(dvb);
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mutex_unlock(&dvb->lock);
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return err;
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}
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/* ------------------------------------------------------------------ */
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static int cx231xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
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{
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struct cx231xx *dev = fe->dvb->priv;
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if (acquire)
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return cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
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else
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return cx231xx_set_mode(dev, CX231XX_SUSPEND);
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}
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/* ------------------------------------------------------------------ */
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static struct xc5000_config cnxt_rde250_tunerconfig = {
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.i2c_address = 0x61,
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.if_khz = 5380,
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};
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/* ------------------------------------------------------------------ */
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#if 0
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static int attach_xc5000(u8 addr, struct cx231xx *dev)
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{
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struct dvb_frontend *fe;
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struct xc5000_config cfg;
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memset(&cfg, 0, sizeof(cfg));
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cfg.i2c_adap = &dev->i2c_bus[1].i2c_adap;
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cfg.i2c_addr = addr;
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if (!dev->dvb->frontend) {
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printk(KERN_ERR "%s/2: dvb frontend not attached. "
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"Can't attach xc5000\n", dev->name);
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return -EINVAL;
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}
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fe = dvb_attach(xc5000_attach, dev->dvb->frontend, &cfg);
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if (!fe) {
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printk(KERN_ERR "%s/2: xc5000 attach failed\n", dev->name);
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dvb_frontend_detach(dev->dvb->frontend);
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dev->dvb->frontend = NULL;
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return -EINVAL;
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}
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printk(KERN_INFO "%s/2: xc5000 attached\n", dev->name);
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return 0;
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}
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#endif
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int cx231xx_set_analog_freq(struct cx231xx *dev, u32 freq)
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{
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int status = 0;
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if ((dev->dvb != NULL) && (dev->dvb->frontend != NULL)) {
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struct dvb_tuner_ops *dops = &dev->dvb->frontend->ops.tuner_ops;
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if (dops->set_analog_params != NULL) {
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struct analog_parameters params;
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params.frequency = freq;
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params.std = dev->norm;
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params.mode = 0; /* 0- Air; 1 - cable */
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/*params.audmode = ; */
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/* Set the analog parameters to set the frequency */
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cx231xx_info("Setting Frequency for XC5000\n");
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dops->set_analog_params(dev->dvb->frontend, ¶ms);
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}
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}
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return status;
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}
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int cx231xx_reset_analog_tuner(struct cx231xx *dev)
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{
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int status = 0;
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if ((dev->dvb != NULL) && (dev->dvb->frontend != NULL)) {
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struct dvb_tuner_ops *dops = &dev->dvb->frontend->ops.tuner_ops;
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if (dops->init != NULL && !dev->xc_fw_load_done) {
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cx231xx_info("Reloading firmware for XC5000\n");
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status = dops->init(dev->dvb->frontend);
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if (status == 0) {
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dev->xc_fw_load_done = 1;
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cx231xx_info
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("XC5000 firmware download completed\n");
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} else {
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dev->xc_fw_load_done = 0;
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cx231xx_info
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("XC5000 firmware download failed !!!\n");
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}
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}
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}
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return status;
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}
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/* ------------------------------------------------------------------ */
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static int register_dvb(struct cx231xx_dvb *dvb,
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struct module *module,
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struct cx231xx *dev, struct device *device)
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{
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int result;
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mutex_init(&dvb->lock);
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/* register adapter */
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result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
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adapter_nr);
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if (result < 0) {
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printk(KERN_WARNING
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"%s: dvb_register_adapter failed (errno = %d)\n",
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dev->name, result);
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goto fail_adapter;
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}
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/* Ensure all frontends negotiate bus access */
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dvb->frontend->ops.ts_bus_ctrl = cx231xx_dvb_bus_ctrl;
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dvb->adapter.priv = dev;
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/* register frontend */
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result = dvb_register_frontend(&dvb->adapter, dvb->frontend);
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if (result < 0) {
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printk(KERN_WARNING
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"%s: dvb_register_frontend failed (errno = %d)\n",
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dev->name, result);
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goto fail_frontend;
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}
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/* register demux stuff */
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dvb->demux.dmx.capabilities =
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DMX_TS_FILTERING | DMX_SECTION_FILTERING |
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DMX_MEMORY_BASED_FILTERING;
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dvb->demux.priv = dvb;
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dvb->demux.filternum = 256;
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dvb->demux.feednum = 256;
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dvb->demux.start_feed = start_feed;
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dvb->demux.stop_feed = stop_feed;
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result = dvb_dmx_init(&dvb->demux);
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if (result < 0) {
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printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
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dev->name, result);
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goto fail_dmx;
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}
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dvb->dmxdev.filternum = 256;
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dvb->dmxdev.demux = &dvb->demux.dmx;
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dvb->dmxdev.capabilities = 0;
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result = dvb_dmxdev_init(&dvb->dmxdev, &dvb->adapter);
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if (result < 0) {
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printk(KERN_WARNING "%s: dvb_dmxdev_init failed (errno = %d)\n",
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dev->name, result);
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goto fail_dmxdev;
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}
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dvb->fe_hw.source = DMX_FRONTEND_0;
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result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_hw);
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if (result < 0) {
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printk(KERN_WARNING
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"%s: add_frontend failed (DMX_FRONTEND_0, errno = %d)\n",
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dev->name, result);
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goto fail_fe_hw;
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}
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dvb->fe_mem.source = DMX_MEMORY_FE;
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result = dvb->demux.dmx.add_frontend(&dvb->demux.dmx, &dvb->fe_mem);
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if (result < 0) {
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printk(KERN_WARNING
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"%s: add_frontend failed (DMX_MEMORY_FE, errno = %d)\n",
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dev->name, result);
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goto fail_fe_mem;
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}
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result = dvb->demux.dmx.connect_frontend(&dvb->demux.dmx, &dvb->fe_hw);
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if (result < 0) {
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printk(KERN_WARNING
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"%s: connect_frontend failed (errno = %d)\n", dev->name,
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result);
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goto fail_fe_conn;
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}
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/* register network adapter */
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dvb_net_init(&dvb->adapter, &dvb->net, &dvb->demux.dmx);
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return 0;
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fail_fe_conn:
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dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
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fail_fe_mem:
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dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
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fail_fe_hw:
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dvb_dmxdev_release(&dvb->dmxdev);
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fail_dmxdev:
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dvb_dmx_release(&dvb->demux);
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fail_dmx:
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dvb_unregister_frontend(dvb->frontend);
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fail_frontend:
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dvb_frontend_detach(dvb->frontend);
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dvb_unregister_adapter(&dvb->adapter);
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fail_adapter:
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return result;
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}
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static void unregister_dvb(struct cx231xx_dvb *dvb)
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{
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dvb_net_release(&dvb->net);
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dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_mem);
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dvb->demux.dmx.remove_frontend(&dvb->demux.dmx, &dvb->fe_hw);
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dvb_dmxdev_release(&dvb->dmxdev);
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dvb_dmx_release(&dvb->demux);
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dvb_unregister_frontend(dvb->frontend);
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dvb_frontend_detach(dvb->frontend);
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dvb_unregister_adapter(&dvb->adapter);
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}
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static int dvb_init(struct cx231xx *dev)
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{
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int result = 0;
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struct cx231xx_dvb *dvb;
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if (!dev->board.has_dvb) {
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/* This device does not support the extension */
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return 0;
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}
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dvb = kzalloc(sizeof(struct cx231xx_dvb), GFP_KERNEL);
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if (dvb == NULL) {
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printk(KERN_INFO "cx231xx_dvb: memory allocation failed\n");
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return -ENOMEM;
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}
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dev->dvb = dvb;
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dev->cx231xx_set_analog_freq = cx231xx_set_analog_freq;
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dev->cx231xx_reset_analog_tuner = cx231xx_reset_analog_tuner;
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cx231xx_set_mode(dev, CX231XX_DIGITAL_MODE);
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/* init frontend */
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switch (dev->model) {
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case CX231XX_BOARD_CNXT_RDE_250:
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/* dev->dvb->frontend = dvb_attach(s5h1411_attach,
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&dvico_s5h1411_config,
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&dev->i2c_bus[1].i2c_adap); */
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dev->dvb->frontend = dvb_attach(dvb_dummy_fe_ofdm_attach);
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if (dev->dvb->frontend == NULL) {
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printk(DRIVER_NAME
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": Failed to attach dummy front end\n");
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result = -EINVAL;
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goto out_free;
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}
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/* define general-purpose callback pointer */
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dvb->frontend->callback = cx231xx_tuner_callback;
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if (!dvb_attach(xc5000_attach, dev->dvb->frontend,
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&dev->i2c_bus[1].i2c_adap,
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&cnxt_rde250_tunerconfig)) {
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result = -EINVAL;
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goto out_free;
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}
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break;
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case CX231XX_BOARD_CNXT_RDU_250:
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dev->dvb->frontend = dvb_attach(dvb_dummy_fe_ofdm_attach);
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if (dev->dvb->frontend == NULL) {
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printk(DRIVER_NAME
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": Failed to attach dummy front end\n");
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result = -EINVAL;
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goto out_free;
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}
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/* define general-purpose callback pointer */
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dvb->frontend->callback = cx231xx_tuner_callback;
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if (!dvb_attach(xc5000_attach, dev->dvb->frontend,
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&dev->i2c_bus[1].i2c_adap,
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&cnxt_rde250_tunerconfig)) {
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result = -EINVAL;
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goto out_free;
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}
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break;
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default:
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printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
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" isn't supported yet\n", dev->name);
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break;
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}
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if (NULL == dvb->frontend) {
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printk(KERN_ERR
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"%s/2: frontend initialization failed\n", dev->name);
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result = -EINVAL;
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goto out_free;
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}
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/* register everything */
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result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
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if (result < 0)
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goto out_free;
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cx231xx_set_mode(dev, CX231XX_SUSPEND);
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printk(KERN_INFO "Successfully loaded cx231xx-dvb\n");
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return 0;
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out_free:
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cx231xx_set_mode(dev, CX231XX_SUSPEND);
|
|
kfree(dvb);
|
|
dev->dvb = NULL;
|
|
return result;
|
|
}
|
|
|
|
static int dvb_fini(struct cx231xx *dev)
|
|
{
|
|
if (!dev->board.has_dvb) {
|
|
/* This device does not support the extension */
|
|
return 0;
|
|
}
|
|
|
|
if (dev->dvb) {
|
|
unregister_dvb(dev->dvb);
|
|
dev->dvb = NULL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct cx231xx_ops dvb_ops = {
|
|
.id = CX231XX_DVB,
|
|
.name = "Cx231xx dvb Extension",
|
|
.init = dvb_init,
|
|
.fini = dvb_fini,
|
|
};
|
|
|
|
static int __init cx231xx_dvb_register(void)
|
|
{
|
|
return cx231xx_register_extension(&dvb_ops);
|
|
}
|
|
|
|
static void __exit cx231xx_dvb_unregister(void)
|
|
{
|
|
cx231xx_unregister_extension(&dvb_ops);
|
|
}
|
|
|
|
module_init(cx231xx_dvb_register);
|
|
module_exit(cx231xx_dvb_unregister);
|