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OpenCloudOS-Kernel/drivers/media/video/em28xx/em28xx-dvb.c

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/*
DVB device driver for em28xx
(c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org>
(c) 2008 Devin Heitmueller <devin.heitmueller@gmail.com>
- Fixes for the driver to properly work with HVR-950
- Fixes for the driver to properly work with Pinnacle PCTV HD Pro Stick
- Fixes for the driver to properly work with AMD ATI TV Wonder HD 600
(c) 2008 Aidan Thornton <makosoft@googlemail.com>
Based on cx88-dvb, saa7134-dvb and videobuf-dvb originally written by:
(c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
(c) 2004 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.
*/
#include <linux/kernel.h>
#include <linux/usb.h>
#include "em28xx.h"
#include <media/v4l2-common.h>
#include <media/videobuf-vmalloc.h>
#include "lgdt330x.h"
#include "zl10353.h"
#ifdef EM28XX_DRX397XD_SUPPORT
#include "drx397xD.h"
#endif
MODULE_DESCRIPTION("driver for em28xx based DVB cards");
MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
MODULE_LICENSE("GPL");
static unsigned int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "enable debug messages [dvb]");
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
#define dprintk(level, fmt, arg...) do { \
if (debug >= level) \
printk(KERN_DEBUG "%s/2-dvb: " fmt, dev->name, ## arg); \
} while (0)
#define EM28XX_DVB_NUM_BUFS 5
#define EM28XX_DVB_MAX_PACKETSIZE 564
#define EM28XX_DVB_MAX_PACKETS 64
struct em28xx_dvb {
struct dvb_frontend *frontend;
/* feed count management */
struct mutex lock;
int nfeeds;
/* general boilerplate stuff */
struct dvb_adapter adapter;
struct dvb_demux demux;
struct dmxdev dmxdev;
struct dmx_frontend fe_hw;
struct dmx_frontend fe_mem;
struct dvb_net net;
};
static inline void print_err_status(struct em28xx *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(1, "URB status %d [%s].\n", status, errmsg);
} else {
dprintk(1, "URB packet %d, status %d [%s].\n",
packet, status, errmsg);
}
}
static inline int dvb_isoc_copy(struct em28xx *dev, struct urb *urb)
{
int i;
if (!dev)
return 0;
if ((dev->state & DEV_DISCONNECTED) || (dev->state & DEV_MISCONFIGURED))
return 0;
if (urb->status < 0) {
print_err_status(dev, -1, urb->status);
if (urb->status == -ENOENT)
return 0;
}
for (i = 0; i < urb->number_of_packets; i++) {
int status = urb->iso_frame_desc[i].status;
if (status < 0) {
print_err_status(dev, i, status);
if (urb->iso_frame_desc[i].status != -EPROTO)
continue;
}
dvb_dmx_swfilter(&dev->dvb->demux, urb->transfer_buffer +
urb->iso_frame_desc[i].offset,
urb->iso_frame_desc[i].actual_length);
}
return 0;
}
static int start_streaming(struct em28xx_dvb *dvb)
{
int rc;
struct em28xx *dev = dvb->adapter.priv;
usb_set_interface(dev->udev, 0, 1);
rc = em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
if (rc < 0)
return rc;
return em28xx_init_isoc(dev, EM28XX_DVB_MAX_PACKETS,
EM28XX_DVB_NUM_BUFS, EM28XX_DVB_MAX_PACKETSIZE,
dvb_isoc_copy);
}
static int stop_streaming(struct em28xx_dvb *dvb)
{
struct em28xx *dev = dvb->adapter.priv;
em28xx_uninit_isoc(dev);
em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
return 0;
}
static int start_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
struct em28xx_dvb *dvb = demux->priv;
int rc, ret;
if (!demux->dmx.frontend)
return -EINVAL;
mutex_lock(&dvb->lock);
dvb->nfeeds++;
rc = dvb->nfeeds;
if (dvb->nfeeds == 1) {
ret = start_streaming(dvb);
if (ret < 0)
rc = ret;
}
mutex_unlock(&dvb->lock);
return rc;
}
static int stop_feed(struct dvb_demux_feed *feed)
{
struct dvb_demux *demux = feed->demux;
struct em28xx_dvb *dvb = demux->priv;
int err = 0;
mutex_lock(&dvb->lock);
dvb->nfeeds--;
if (0 == dvb->nfeeds)
err = stop_streaming(dvb);
mutex_unlock(&dvb->lock);
return err;
}
/* ------------------------------------------------------------------ */
static int em28xx_dvb_bus_ctrl(struct dvb_frontend *fe, int acquire)
{
struct em28xx *dev = fe->dvb->priv;
if (acquire)
return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
else
return em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
}
/* ------------------------------------------------------------------ */
static struct lgdt330x_config em2880_lgdt3303_dev = {
.demod_address = 0x0e,
.demod_chip = LGDT3303,
};
static struct zl10353_config em28xx_zl10353_with_xc3028 = {
.demod_address = (0x1e >> 1),
.no_tuner = 1,
.parallel_ts = 1,
.if2 = 45600,
};
#ifdef EM28XX_DRX397XD_SUPPORT
/* [TODO] djh - not sure yet what the device config needs to contain */
static struct drx397xD_config em28xx_drx397xD_with_xc3028 = {
.demod_address = (0xe0 >> 1),
};
#endif
/* ------------------------------------------------------------------ */
static int attach_xc3028(u8 addr, struct em28xx *dev)
{
struct dvb_frontend *fe;
struct xc2028_config cfg;
memset(&cfg, 0, sizeof(cfg));
cfg.i2c_adap = &dev->i2c_adap;
cfg.i2c_addr = addr;
if (!dev->dvb->frontend) {
printk(KERN_ERR "%s/2: dvb frontend not attached. "
"Can't attach xc3028\n",
dev->name);
return -EINVAL;
}
fe = dvb_attach(xc2028_attach, dev->dvb->frontend, &cfg);
if (!fe) {
printk(KERN_ERR "%s/2: xc3028 attach failed\n",
dev->name);
dvb_frontend_detach(dev->dvb->frontend);
dev->dvb->frontend = NULL;
return -EINVAL;
}
printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);
return 0;
}
/* ------------------------------------------------------------------ */
static int register_dvb(struct em28xx_dvb *dvb,
struct module *module,
struct em28xx *dev,
struct device *device)
{
int result;
mutex_init(&dvb->lock);
/* register adapter */
result = dvb_register_adapter(&dvb->adapter, dev->name, module, device,
adapter_nr);
if (result < 0) {
printk(KERN_WARNING "%s: dvb_register_adapter failed (errno = %d)\n",
dev->name, result);
goto fail_adapter;
}
/* Ensure all frontends negotiate bus access */
dvb->frontend->ops.ts_bus_ctrl = em28xx_dvb_bus_ctrl;
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",
dev->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 = dvb;
dvb->demux.filternum = 256;
dvb->demux.feednum = 256;
dvb->demux.start_feed = start_feed;
dvb->demux.stop_feed = stop_feed;
result = dvb_dmx_init(&dvb->demux);
if (result < 0) {
printk(KERN_WARNING "%s: dvb_dmx_init failed (errno = %d)\n",
dev->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",
dev->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",
dev->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",
dev->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",
dev->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;
}
static void unregister_dvb(struct em28xx_dvb *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);
}
static int dvb_init(struct em28xx *dev)
{
int result = 0;
struct em28xx_dvb *dvb;
if (!dev->has_dvb) {
/* This device does not support the extension */
return 0;
}
dvb = kzalloc(sizeof(struct em28xx_dvb), GFP_KERNEL);
if (dvb == NULL) {
printk(KERN_INFO "em28xx_dvb: memory allocation failed\n");
return -ENOMEM;
}
dev->dvb = dvb;
em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
/* init frontend */
switch (dev->model) {
case EM2883_BOARD_HAUPPAUGE_WINTV_HVR_950:
case EM2880_BOARD_PINNACLE_PCTV_HD_PRO:
case EM2880_BOARD_AMD_ATI_TV_WONDER_HD_600:
dvb->frontend = dvb_attach(lgdt330x_attach,
&em2880_lgdt3303_dev,
&dev->i2c_adap);
if (attach_xc3028(0x61, dev) < 0) {
result = -EINVAL;
goto out_free;
}
break;
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900:
case EM2880_BOARD_TERRATEC_HYBRID_XS:
case EM2880_BOARD_KWORLD_DVB_310U:
dvb->frontend = dvb_attach(zl10353_attach,
&em28xx_zl10353_with_xc3028,
&dev->i2c_adap);
if (attach_xc3028(0x61, dev) < 0) {
result = -EINVAL;
goto out_free;
}
break;
case EM2880_BOARD_HAUPPAUGE_WINTV_HVR_900_R2:
#ifdef EM28XX_DRX397XD_SUPPORT
/* We don't have the config structure properly populated, so
this is commented out for now */
dvb->frontend = dvb_attach(drx397xD_attach,
&em28xx_drx397xD_with_xc3028,
&dev->i2c_adap);
if (attach_xc3028(0x61, dev) < 0) {
result = -EINVAL;
goto out_free;
}
break;
#endif
default:
printk(KERN_ERR "%s/2: The frontend of your DVB/ATSC card"
" isn't supported yet\n",
dev->name);
break;
}
if (NULL == dvb->frontend) {
printk(KERN_ERR
"%s/2: frontend initialization failed\n",
dev->name);
result = -EINVAL;
goto out_free;
}
/* define general-purpose callback pointer */
dvb->frontend->callback = em28xx_tuner_callback;
/* register everything */
result = register_dvb(dvb, THIS_MODULE, dev, &dev->udev->dev);
if (result < 0)
goto out_free;
em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
return 0;
out_free:
em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
kfree(dvb);
dev->dvb = NULL;
return result;
}
static int dvb_fini(struct em28xx *dev)
{
if (!dev->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 em28xx_ops dvb_ops = {
.id = EM28XX_DVB,
.name = "Em28xx dvb Extension",
.init = dvb_init,
.fini = dvb_fini,
};
static int __init em28xx_dvb_register(void)
{
return em28xx_register_extension(&dvb_ops);
}
static void __exit em28xx_dvb_unregister(void)
{
em28xx_unregister_extension(&dvb_ops);
}
module_init(em28xx_dvb_register);
module_exit(em28xx_dvb_unregister);
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