SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/media/video/cx23885/cx23885-dvb.c

   1 /*
   2  *  Driver for the Conexant CX23885 PCIe bridge
   3  *
   4  *  Copyright (c) 2006 Steven Toth <stoth@hauppauge.com>
   5  *
   6  *  This program is free software; you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation; either version 2 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include <linux/module.h>
  23 #include <linux/init.h>
  24 #include <linux/device.h>
  25 #include <linux/fs.h>
  26 #include <linux/kthread.h>
  27 #include <linux/file.h>
  28 #include <linux/suspend.h>
  29
  30 #include "cx23885.h"
  31 #include <media/v4l2-common.h>
  32
  33 #include "s5h1409.h"
  34 #include "mt2131.h"
  35
  36 static unsigned int debug = 0;
  37
  38 #define dprintk(level,fmt, arg...)      if (debug >= level) \
  39         printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg)
  40
  41 /* ------------------------------------------------------------------ */
  42
  43 static int dvb_buf_setup(struct videobuf_queue *q,
  44                          unsigned int *count, unsigned int *size)
  45 {
  46         struct cx23885_tsport *port = q->priv_data;
  47
  48         port->ts_packet_size  = 188 * 4;
  49         port->ts_packet_count = 32;
  50
  51         *size  = port->ts_packet_size * port->ts_packet_count;
  52         *count = 32;
  53         return 0;
  54 }
  55
  56 static int dvb_buf_prepare(struct videobuf_queue *q,
  57                            struct videobuf_buffer *vb, enum v4l2_field field)
  58 {
  59         struct cx23885_tsport *port = q->priv_data;
  60         return cx23885_buf_prepare(q, port, (struct cx23885_buffer*)vb, field);
  61 }
  62
  63 static void dvb_buf_queue(struct videobuf_queue *q, struct videobuf_buffer *vb)
  64 {
  65         struct cx23885_tsport *port = q->priv_data;
  66         cx23885_buf_queue(port, (struct cx23885_buffer*)vb);
  67 }
  68
  69 static void dvb_buf_release(struct videobuf_queue *q,
  70                             struct videobuf_buffer *vb)
  71 {
  72         cx23885_free_buffer(q, (struct cx23885_buffer*)vb);
  73 }
  74
  75 static struct videobuf_queue_ops dvb_qops = {
  76         .buf_setup    = dvb_buf_setup,
  77         .buf_prepare  = dvb_buf_prepare,
  78         .buf_queue    = dvb_buf_queue,
  79         .buf_release  = dvb_buf_release,
  80 };
  81
  82 static struct s5h1409_config hauppauge_generic_config = {
  83         .demod_address = 0x32 >> 1,
  84         .output_mode   = S5H1409_SERIAL_OUTPUT,
  85         .gpio          = S5H1409_GPIO_OFF,
  86         .if_freq       = 44000,
  87         .inversion     = S5H1409_INVERSION_OFF,
  88         .status_mode   = S5H1409_DEMODLOCKING
  89 };
  90
  91 static struct mt2131_config hauppauge_generic_tunerconfig = {
  92         0x61
  93 };
  94
  95 static int dvb_register(struct cx23885_tsport *port)
  96 {
  97         struct cx23885_dev *dev = port->dev;
  98
  99         /* init struct videobuf_dvb */
 100         port->dvb.name = dev->name;
 101
 102         /* init frontend */
 103         switch (dev->board) {
 104         case CX23885_BOARD_HAUPPAUGE_HVR1250:
 105         case CX23885_BOARD_HAUPPAUGE_HVR1800:
 106         case CX23885_BOARD_HAUPPAUGE_HVR1800lp:
 107                 port->dvb.frontend = dvb_attach(s5h1409_attach,
 108                                                 &hauppauge_generic_config,
 109                                                 &dev->i2c_bus[0].i2c_adap);
 110                 if (port->dvb.frontend != NULL) {
 111                         dvb_attach(mt2131_attach, port->dvb.frontend,
 112                                    &dev->i2c_bus[0].i2c_adap,
 113                                    &hauppauge_generic_tunerconfig, 0);
 114                 }
 115                 break;
 116         default:
 117                 printk("%s: The frontend of your DVB/ATSC card isn't supported yet\n",
 118                        dev->name);
 119                 break;
 120         }
 121         if (NULL == port->dvb.frontend) {
 122                 printk("%s: frontend initialization failed\n", dev->name);
 123                 return -1;
 124         }
 125
 126         /* Put the analog decoder in standby to keep it quiet */
 127         cx23885_call_i2c_clients (&dev->i2c_bus[0], TUNER_SET_STANDBY, NULL);
 128
 129         /* register everything */
 130         return videobuf_dvb_register(&port->dvb, THIS_MODULE, port,
 131                                      &dev->pci->dev);
 132 }
 133
 134 int cx23885_dvb_register(struct cx23885_tsport *port)
 135 {
 136         struct cx23885_dev *dev = port->dev;
 137         int err;
 138
 139         dprintk(1, "%s\n", __FUNCTION__);
 140         dprintk(1, " ->being probed by Card=%d Name=%s, PCI %02x:%02x\n",
 141                 dev->board,
 142                 dev->name,
 143                 dev->pci_bus,
 144                 dev->pci_slot);
 145
 146         err = -ENODEV;
 147         if (!(cx23885_boards[dev->board].portc & CX23885_MPEG_DVB))
 148                 goto fail_core;
 149
 150         /* dvb stuff */
 151         printk("%s: cx23885 based dvb card\n", dev->name);
 152         videobuf_queue_init(&port->dvb.dvbq, &dvb_qops, dev->pci, &port->slock,
 153                             V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_TOP,
 154                             sizeof(struct cx23885_buffer), port);
 155         err = dvb_register(port);
 156         if (err != 0)
 157                 printk("%s() dvb_register failed err = %d\n", __FUNCTION__, err);
 158
 159  fail_core:
 160         return err;
 161 }
 162
 163 int cx23885_dvb_unregister(struct cx23885_tsport *port)
 164 {
 165         /* dvb */
 166         if(port->dvb.frontend)
 167                 videobuf_dvb_unregister(&port->dvb);
 168
 169         return 0;
 170 }
 171
 172 /*
 173  * Local variables:
 174  * c-basic-offset: 8
 175  * End:
 176  * kate: eol "unix"; indent-width 3; remove-trailing-space on; replace-trailing-space-save on; tab-width 8; replace-tabs off; space-indent off; mixed-indent off
 177 */