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

   1 /* DVB USB compliant Linux driver for the
   2  *  - GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module
   3  *
   4  * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com)
   5  * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com)
   6  *
   7  * Thanks to GENPIX for the sample code used to implement this module.
   8  *
   9  * This module is based off the vp7045 and vp702x modules
  10  *
  11  *      This program is free software; you can redistribute it and/or modify it
  12  *      under the terms of the GNU General Public License as published by the Free
  13  *      Software Foundation, version 2.
  14  *
  15  * see Documentation/dvb/README.dvb-usb for more information
  16  */
  17 #include "gp8psk.h"
  18
  19 /* debug */
  20 static char bcm4500_firmware[] = "dvb-usb-gp8psk-02.fw";
  21 int dvb_usb_gp8psk_debug;
  22 module_param_named(debug,dvb_usb_gp8psk_debug, int, 0644);
  23 MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,rc=4 (or-able))." DVB_USB_DEBUG_STATUS);
  24
  25 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  26
  27 int gp8psk_usb_in_op(struct dvb_usb_device *d, u8 req, u16 value, u16 index, u8 *b, int blen)
  28 {
  29         int ret = 0,try = 0;
  30
  31         if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
  32                 return ret;
  33
  34         while (ret >= 0 && ret != blen && try < 3) {
  35                 ret = usb_control_msg(d->udev,
  36                         usb_rcvctrlpipe(d->udev,0),
  37                         req,
  38                         USB_TYPE_VENDOR | USB_DIR_IN,
  39                         value,index,b,blen,
  40                         2000);
  41                 deb_info("reading number %d (ret: %d)\n",try,ret);
  42                 try++;
  43         }
  44
  45         if (ret < 0 || ret != blen) {
  46                 warn("usb in %d operation failed.", req);
  47                 ret = -EIO;
  48         } else
  49                 ret = 0;
  50
  51         deb_xfer("in: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
  52         debug_dump(b,blen,deb_xfer);
  53
  54         mutex_unlock(&d->usb_mutex);
  55
  56         return ret;
  57 }
  58
  59 int gp8psk_usb_out_op(struct dvb_usb_device *d, u8 req, u16 value,
  60                              u16 index, u8 *b, int blen)
  61 {
  62         int ret;
  63
  64         deb_xfer("out: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
  65         debug_dump(b,blen,deb_xfer);
  66
  67         if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
  68                 return ret;
  69
  70         if (usb_control_msg(d->udev,
  71                         usb_sndctrlpipe(d->udev,0),
  72                         req,
  73                         USB_TYPE_VENDOR | USB_DIR_OUT,
  74                         value,index,b,blen,
  75                         2000) != blen) {
  76                 warn("usb out operation failed.");
  77                 ret = -EIO;
  78         } else
  79                 ret = 0;
  80         mutex_unlock(&d->usb_mutex);
  81
  82         return ret;
  83 }
  84
  85 static int gp8psk_load_bcm4500fw(struct dvb_usb_device *d)
  86 {
  87         int ret;
  88         const struct firmware *fw = NULL;
  89         u8 *ptr, *buf;
  90         if ((ret = request_firmware(&fw, bcm4500_firmware,
  91                                         &d->udev->dev)) != 0) {
  92                 err("did not find the bcm4500 firmware file. (%s) "
  93                         "Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
  94                         bcm4500_firmware,ret);
  95                 return ret;
  96         }
  97
  98         ret = -EINVAL;
  99
 100         if (gp8psk_usb_out_op(d, LOAD_BCM4500,1,0,NULL, 0))
 101                 goto out_rel_fw;
 102
 103         info("downloading bcm4500 firmware from file '%s'",bcm4500_firmware);
 104
 105         ptr = fw->data;
 106         buf = kmalloc(64, GFP_KERNEL | GFP_DMA);
 107
 108         while (ptr[0] != 0xff) {
 109                 u16 buflen = ptr[0] + 4;
 110                 if (ptr + buflen >= fw->data + fw->size) {
 111                         err("failed to load bcm4500 firmware.");
 112                         goto out_free;
 113                 }
 114                 memcpy(buf, ptr, buflen);
 115                 if (dvb_usb_generic_write(d, buf, buflen)) {
 116                         err("failed to load bcm4500 firmware.");
 117                         goto out_free;
 118                 }
 119                 ptr += buflen;
 120         }
 121
 122         ret = 0;
 123
 124 out_free:
 125         kfree(buf);
 126 out_rel_fw:
 127         release_firmware(fw);
 128
 129         return ret;
 130 }
 131
 132 static int gp8psk_power_ctrl(struct dvb_usb_device *d, int onoff)
 133 {
 134         u8 status, buf;
 135         int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
 136
 137         if (onoff) {
 138                 gp8psk_usb_in_op(d, GET_8PSK_CONFIG,0,0,&status,1);
 139                 if (! (status & bm8pskStarted)) {  /* started */
 140                         if(gp_product_id == USB_PID_GENPIX_SKYWALKER_CW3K)
 141                                 gp8psk_usb_out_op(d, CW3K_INIT, 1, 0, NULL, 0);
 142                         if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
 143                                 return -EINVAL;
 144                 }
 145
 146                 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
 147                         if (! (status & bm8pskFW_Loaded)) /* BCM4500 firmware loaded */
 148                                 if(gp8psk_load_bcm4500fw(d))
 149                                         return EINVAL;
 150
 151                 if (! (status & bmIntersilOn)) /* LNB Power */
 152                         if (gp8psk_usb_in_op(d, START_INTERSIL, 1, 0,
 153                                         &buf, 1))
 154                                 return EINVAL;
 155
 156                 /* Set DVB mode to 1 */
 157                 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
 158                         if (gp8psk_usb_out_op(d, SET_DVB_MODE, 1, 0, NULL, 0))
 159                                 return EINVAL;
 160                 /* Abort possible TS (if previous tune crashed) */
 161                 if (gp8psk_usb_out_op(d, ARM_TRANSFER, 0, 0, NULL, 0))
 162                         return EINVAL;
 163         } else {
 164                 /* Turn off LNB power */
 165                 if (gp8psk_usb_in_op(d, START_INTERSIL, 0, 0, &buf, 1))
 166                         return EINVAL;
 167                 /* Turn off 8psk power */
 168                 if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
 169                         return -EINVAL;
 170                 if(gp_product_id == USB_PID_GENPIX_SKYWALKER_CW3K)
 171                         gp8psk_usb_out_op(d, CW3K_INIT, 0, 0, NULL, 0);
 172         }
 173         return 0;
 174 }
 175
 176
 177 static int gp8psk_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 178 {
 179         return gp8psk_usb_out_op(adap->dev, ARM_TRANSFER, onoff, 0 , NULL, 0);
 180 }
 181
 182 static int gp8psk_frontend_attach(struct dvb_usb_adapter *adap)
 183 {
 184         adap->fe = gp8psk_fe_attach(adap->dev);
 185         return 0;
 186 }
 187
 188 static struct dvb_usb_device_properties gp8psk_properties;
 189
 190 static int gp8psk_usb_probe(struct usb_interface *intf,
 191                 const struct usb_device_id *id)
 192 {
 193         int ret;
 194         struct usb_device *udev = interface_to_usbdev(intf);
 195         ret = dvb_usb_device_init(intf, &gp8psk_properties,
 196                                   THIS_MODULE, NULL, adapter_nr);
 197         if (ret == 0) {
 198                 info("found Genpix USB device pID = %x (hex)",
 199                         le16_to_cpu(udev->descriptor.idProduct));
 200         }
 201         return ret;
 202 }
 203
 204 static struct usb_device_id gp8psk_usb_table [] = {
 205             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_1_COLD) },
 206             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_1_WARM) },
 207             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_2) },
 208             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_1) },
 209             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_CW3K) },
 210             { 0 },
 211 };
 212 MODULE_DEVICE_TABLE(usb, gp8psk_usb_table);
 213
 214 static struct dvb_usb_device_properties gp8psk_properties = {
 215         .usb_ctrl = CYPRESS_FX2,
 216         .firmware = "dvb-usb-gp8psk-01.fw",
 217
 218         .num_adapters = 1,
 219         .adapter = {
 220                 {
 221                         .streaming_ctrl   = gp8psk_streaming_ctrl,
 222                         .frontend_attach  = gp8psk_frontend_attach,
 223                         /* parameter for the MPEG2-data transfer */
 224                         .stream = {
 225                                 .type = USB_BULK,
 226                                 .count = 7,
 227                                 .endpoint = 0x82,
 228                                 .u = {
 229                                         .bulk = {
 230                                                 .buffersize = 8192,
 231                                         }
 232                                 }
 233                         },
 234                 }
 235         },
 236         .power_ctrl       = gp8psk_power_ctrl,
 237
 238         .generic_bulk_ctrl_endpoint = 0x01,
 239
 240         .num_device_descs = 4,
 241         .devices = {
 242                 { .name = "Genpix 8PSK-to-USB2 Rev.1 DVB-S receiver",
 243                   .cold_ids = { &gp8psk_usb_table[0], NULL },
 244                   .warm_ids = { &gp8psk_usb_table[1], NULL },
 245                 },
 246                 { .name = "Genpix 8PSK-to-USB2 Rev.2 DVB-S receiver",
 247                   .cold_ids = { NULL },
 248                   .warm_ids = { &gp8psk_usb_table[2], NULL },
 249                 },
 250                 { .name = "Genpix SkyWalker-1 DVB-S receiver",
 251                   .cold_ids = { NULL },
 252                   .warm_ids = { &gp8psk_usb_table[3], NULL },
 253                 },
 254                 { .name = "Genpix SkyWalker-CW3K DVB-S receiver",
 255                   .cold_ids = { NULL },
 256                   .warm_ids = { &gp8psk_usb_table[4], NULL },
 257                 },
 258                 { NULL },
 259         }
 260 };
 261
 262 /* usb specific object needed to register this driver with the usb subsystem */
 263 static struct usb_driver gp8psk_usb_driver = {
 264         .name           = "dvb_usb_gp8psk",
 265         .probe          = gp8psk_usb_probe,
 266         .disconnect = dvb_usb_device_exit,
 267         .id_table       = gp8psk_usb_table,
 268 };
 269
 270 /* module stuff */
 271 static int __init gp8psk_usb_module_init(void)
 272 {
 273         int result;
 274         if ((result = usb_register(&gp8psk_usb_driver))) {
 275                 err("usb_register failed. (%d)",result);
 276                 return result;
 277         }
 278
 279         return 0;
 280 }
 281
 282 static void __exit gp8psk_usb_module_exit(void)
 283 {
 284         /* deregister this driver from the USB subsystem */
 285         usb_deregister(&gp8psk_usb_driver);
 286 }
 287
 288 module_init(gp8psk_usb_module_init);
 289 module_exit(gp8psk_usb_module_exit);
 290
 291 MODULE_AUTHOR("Alan Nisota <alannisota@gamil.com>");
 292 MODULE_DESCRIPTION("Driver for Genpix 8psk-to-USB2 DVB-S");
 293 MODULE_VERSION("1.1");
 294 MODULE_LICENSE("GPL");