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@@ -0,0 +1,157 @@
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+/*
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+ DVB device driver for em28xx
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+
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+ (c) 2008 Mauro Carvalho Chehab <mchehab@infradead.org>
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+
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+ Based on cx88-dvb and saa7134-dvb originally written by:
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+ (c) 2004, 2005 Chris Pascoe <c.pascoe@itee.uq.edu.au>
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+ (c) 2004 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
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+
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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.
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+ */
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+
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+#include <linux/kernel.h>
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+#include <linux/usb.h>
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+
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+#include "em28xx.h"
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+#include <media/v4l2-common.h>
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+#include <media/videobuf-vmalloc.h>
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+
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+#include "lgdt330x.h"
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+#include "tuner-xc2028.h"
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+#include "tuner-xc2028-types.h"
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+
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+MODULE_DESCRIPTION("driver for em28xx based DVB cards");
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+MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
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+MODULE_LICENSE("GPL");
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+
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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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+
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+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
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+
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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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+
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+static int
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+buffer_setup(struct videobuf_queue *vq, unsigned int *count, unsigned int *size)
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+{
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+ struct em28xx_fh *fh = vq->priv_data;
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+ struct em28xx *dev = fh->dev;
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+
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+ *size = 16 * fh->dev->width * fh->dev->height >> 3;
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+ if (0 == *count)
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+ *count = EM28XX_DEF_BUF;
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+
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+ if (*count < EM28XX_MIN_BUF)
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+ *count = EM28XX_MIN_BUF;
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+
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+ dev->mode = EM28XX_DIGITAL_MODE;
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+
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+ return 0;
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+}
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+
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+/* ------------------------------------------------------------------ */
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+
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+/* Add demods here */
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+
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+/* ------------------------------------------------------------------ */
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+
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+static int attach_xc3028(u8 addr, struct em28xx *dev)
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+{
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+ struct dvb_frontend *fe;
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+ struct xc2028_ctrl ctl;
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+ struct xc2028_config cfg = {
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+ .i2c_adap = &dev->i2c_adap,
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+ .i2c_addr = addr,
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+ .ctrl = &ctl,
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+ };
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+
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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 xc3028\n",
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+ dev->name);
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+ return -EINVAL;
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+ }
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+
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+ fe = dvb_attach(xc2028_attach, dev->dvb.frontend, &cfg);
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+ if (!fe) {
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+ printk(KERN_ERR "%s/2: xc3028 attach failed\n",
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+ dev->name);
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+ dvb_frontend_detach(dev->dvb.frontend);
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+ dvb_unregister_frontend(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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+
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+ printk(KERN_INFO "%s/2: xc3028 attached\n", dev->name);
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+
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+ return 0;
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+}
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+
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+static int dvb_init(struct em28xx *dev)
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+{
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+ /* init struct videobuf_dvb */
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+ dev->dvb.name = dev->name;
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+
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+ dev->qops->buf_setup = buffer_setup;
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+
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+ videobuf_queue_vmalloc_init(&dev->dvb.dvbq, dev->qops,
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+ &dev->udev->dev, &dev->slock,
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+ V4L2_BUF_TYPE_VIDEO_CAPTURE,
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+ V4L2_FIELD_ALTERNATE,
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+ sizeof(struct em28xx_buffer), dev);
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+
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+ /* init frontend */
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+ switch (dev->model) {
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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",
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+ dev->name);
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+ break;
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+ }
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+ if (NULL == dev->dvb.frontend) {
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+ printk(KERN_ERR
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+ "%s/2: frontend initialization failed\n",
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+ dev->name);
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+ return -EINVAL;
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+ }
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+
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+ /* register everything */
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+ return videobuf_dvb_register(&dev->dvb, THIS_MODULE, dev,
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+ &dev->udev->dev,
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+ adapter_nr);
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+}
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+
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+static int dvb_fini(struct em28xx *dev)
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+{
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+ if (dev->dvb.frontend)
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+ videobuf_dvb_unregister(&dev->dvb);
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+
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+ return 0;
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+}
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+
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+static struct em28xx_ops dvb_ops = {
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+ .id = EM28XX_DVB,
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+ .name = "Em28xx dvb Extension",
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+ .init = dvb_init,
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+ .fini = dvb_fini,
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+};
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+
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+static int __init em28xx_dvb_register(void)
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+{
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+ return em28xx_register_extension(&dvb_ops);
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+}
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+
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+static void __exit em28xx_dvb_unregister(void)
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+{
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+ em28xx_unregister_extension(&dvb_ops);
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+}
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+
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+module_init(em28xx_dvb_register);
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+module_exit(em28xx_dvb_unregister);
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