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