drivers/media/dvb/dvb-usb/gp8psk.c

   1 /* DVB USB compliant Linux driver for the
   2  *  - GENPIX 8pks/qpsk USB2.0 DVB-S module
   3  *
   4  * Copyright (C) 2006 Alan Nisota (alannisota@gmail.com)
   5  *
   6  * Thanks to GENPIX for the sample code used to implement this module.
   7  *
   8  * This module is based off the vp7045 and vp702x modules
   9  *
  10  *      This program is free software; you can redistribute it and/or modify it
  11  *      under the terms of the GNU General Public License as published by the Free
  12  *      Software Foundation, version 2.
  13  *
  14  * see Documentation/dvb/README.dvb-usb for more information
  15  */
  16 #include "gp8psk.h"
  17
  18 /* debug */
  19 static char bcm4500_firmware[] = "dvb-usb-gp8psk-02.fw";
  20 int dvb_usb_gp8psk_debug;
  21 module_param_named(debug,dvb_usb_gp8psk_debug, int, 0644);
  22 MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,rc=4 (or-able))." DVB_USB_DEBUG_STATUS);
  23
  24 int gp8psk_usb_in_op(struct dvb_usb_device *d, u8 req, u16 value, u16 index, u8 *b, int blen)
  25 {
  26         int ret = 0,try = 0;
  27
  28         if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
  29                 return ret;
  30
  31         while (ret >= 0 && ret != blen && try < 3) {
  32                 ret = usb_control_msg(d->udev,
  33                         usb_rcvctrlpipe(d->udev,0),
  34                         req,
  35                         USB_TYPE_VENDOR | USB_DIR_IN,
  36                         value,index,b,blen,
  37                         2000);
  38                 deb_info("reading number %d (ret: %d)\n",try,ret);
  39                 try++;
  40         }
  41
  42         if (ret < 0 || ret != blen) {
  43                 warn("usb in operation failed.");
  44                 ret = -EIO;
  45         } else
  46                 ret = 0;
  47
  48         deb_xfer("in: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
  49         debug_dump(b,blen,deb_xfer);
  50
  51         mutex_unlock(&d->usb_mutex);
  52
  53         return ret;
  54 }
  55
  56 int gp8psk_usb_out_op(struct dvb_usb_device *d, u8 req, u16 value,
  57                              u16 index, u8 *b, int blen)
  58 {
  59         int ret;
  60
  61         deb_xfer("out: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
  62         debug_dump(b,blen,deb_xfer);
  63
  64         if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
  65                 return ret;
  66
  67         if (usb_control_msg(d->udev,
  68                         usb_sndctrlpipe(d->udev,0),
  69                         req,
  70                         USB_TYPE_VENDOR | USB_DIR_OUT,
  71                         value,index,b,blen,
  72                         2000) != blen) {
  73                 warn("usb out operation failed.");
  74                 ret = -EIO;
  75         } else
  76                 ret = 0;
  77         mutex_unlock(&d->usb_mutex);
  78
  79         return ret;
  80 }
  81
  82 static int gp8psk_load_bcm4500fw(struct dvb_usb_device *d)
  83 {
  84         int ret;
  85         const struct firmware *fw = NULL;
  86         u8 *ptr, *buf;
  87         if ((ret = request_firmware(&fw, bcm4500_firmware,
  88                                         &d->udev->dev)) != 0) {
  89                 err("did not find the bcm4500 firmware file. (%s) "
  90                         "Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
  91                         bcm4500_firmware,ret);
  92                 return ret;
  93         }
  94
  95         ret = -EINVAL;
  96
  97         if (gp8psk_usb_out_op(d, LOAD_BCM4500,1,0,NULL, 0))
  98                 goto out_rel_fw;
  99
 100         info("downloaidng bcm4500 firmware from file '%s'",bcm4500_firmware);
 101
 102         ptr = fw->data;
 103         buf = kmalloc(512, GFP_KERNEL | GFP_DMA);
 104
 105         while (ptr[0] != 0xff) {
 106                 u16 buflen = ptr[0] + 4;
 107                 if (ptr + buflen >= fw->data + fw->size) {
 108                         err("failed to load bcm4500 firmware.");
 109                         goto out_free;
 110                 }
 111                 memcpy(buf, ptr, buflen);
 112                 if (dvb_usb_generic_write(d, buf, buflen)) {
 113                         err("failed to load bcm4500 firmware.");
 114                         goto out_free;
 115                 }
 116                 ptr += buflen;
 117         }
 118
 119         ret = 0;
 120
 121 out_free:
 122         kfree(buf);
 123 out_rel_fw:
 124         release_firmware(fw);
 125
 126         return ret;
 127 }
 128
 129 static int gp8psk_power_ctrl(struct dvb_usb_device *d, int onoff)
 130 {
 131         u8 status, buf;
 132         if (onoff) {
 133                 gp8psk_usb_in_op(d, GET_8PSK_CONFIG,0,0,&status,1);
 134                 if (! (status & 0x01))  /* started */
 135                         if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
 136                                 return -EINVAL;
 137
 138                 if (! (status & 0x02)) /* BCM4500 firmware loaded */
 139                         if(gp8psk_load_bcm4500fw(d))
 140                                 return EINVAL;
 141
 142                 if (! (status & 0x04)) /* LNB Power */
 143                         if (gp8psk_usb_in_op(d, START_INTERSIL, 1, 0,
 144                                         &buf, 1))
 145                                 return EINVAL;
 146
 147                 /* Set DVB mode */
 148                 if(gp8psk_usb_out_op(d, SET_DVB_MODE, 1, 0, NULL, 0))
 149                         return -EINVAL;
 150                 gp8psk_usb_in_op(d, GET_8PSK_CONFIG,0,0,&status,1);
 151         } else {
 152                 /* Turn off LNB power */
 153                 if (gp8psk_usb_in_op(d, START_INTERSIL, 0, 0, &buf, 1))
 154                         return EINVAL;
 155                 /* Turn off 8psk power */
 156                 if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
 157                         return -EINVAL;
 158
 159         }
 160         return 0;
 161 }
 162
 163
 164 static int gp8psk_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 165 {
 166         return gp8psk_usb_out_op(adap->dev, ARM_TRANSFER, onoff, 0 , NULL, 0);
 167 }
 168
 169 static int gp8psk_frontend_attach(struct dvb_usb_adapter *adap)
 170 {
 171         adap->fe = gp8psk_fe_attach(adap->dev);
 172         return 0;
 173 }
 174
 175 static struct dvb_usb_device_properties gp8psk_properties;
 176
 177 static int gp8psk_usb_probe(struct usb_interface *intf,
 178                 const struct usb_device_id *id)
 179 {
 180         return dvb_usb_device_init(intf,&gp8psk_properties,THIS_MODULE,NULL);
 181 }
 182
 183 static struct usb_device_id gp8psk_usb_table [] = {
 184             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_COLD) },
 185             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_WARM) },
 186             { 0 },
 187 };
 188 MODULE_DEVICE_TABLE(usb, gp8psk_usb_table);
 189
 190 static struct dvb_usb_device_properties gp8psk_properties = {
 191         .usb_ctrl = CYPRESS_FX2,
 192         .firmware = "dvb-usb-gp8psk-01.fw",
 193
 194         .num_adapters = 1,
 195         .adapter = {
 196                 {
 197                         .streaming_ctrl   = gp8psk_streaming_ctrl,
 198                         .frontend_attach  = gp8psk_frontend_attach,
 199                         /* parameter for the MPEG2-data transfer */
 200                         .stream = {
 201                                 .type = USB_BULK,
 202                                 .count = 7,
 203                                 .endpoint = 0x82,
 204                                 .u = {
 205                                         .bulk = {
 206                                                 .buffersize = 8192,
 207                                         }
 208                                 }
 209                         },
 210                 }
 211         },
 212         .power_ctrl       = gp8psk_power_ctrl,
 213
 214         .generic_bulk_ctrl_endpoint = 0x01,
 215
 216         .num_device_descs = 1,
 217         .devices = {
 218                 { .name = "Genpix 8PSK-USB DVB-S USB2.0 receiver",
 219                   .cold_ids = { &gp8psk_usb_table[0], NULL },
 220                   .warm_ids = { &gp8psk_usb_table[1], NULL },
 221                 },
 222                 { NULL },
 223         }
 224 };
 225
 226 /* usb specific object needed to register this driver with the usb subsystem */
 227 static struct usb_driver gp8psk_usb_driver = {
 228         .name           = "dvb_usb_gp8psk",
 229         .probe          = gp8psk_usb_probe,
 230         .disconnect = dvb_usb_device_exit,
 231         .id_table       = gp8psk_usb_table,
 232 };
 233
 234 /* module stuff */
 235 static int __init gp8psk_usb_module_init(void)
 236 {
 237         int result;
 238         if ((result = usb_register(&gp8psk_usb_driver))) {
 239                 err("usb_register failed. (%d)",result);
 240                 return result;
 241         }
 242
 243         return 0;
 244 }
 245
 246 static void __exit gp8psk_usb_module_exit(void)
 247 {
 248         /* deregister this driver from the USB subsystem */
 249         usb_deregister(&gp8psk_usb_driver);
 250 }
 251
 252 module_init(gp8psk_usb_module_init);
 253 module_exit(gp8psk_usb_module_exit);
 254
 255 MODULE_AUTHOR("Alan Nisota <alannisota@gamil.com>");
 256 MODULE_DESCRIPTION("Driver for Genpix 8psk-USB DVB-S USB2.0");
 257 MODULE_VERSION("1.0");
 258 MODULE_LICENSE("GPL");