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

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /* DVB USB compliant Linux driver for the
   3  *  - GENPIX 8pks/qpsk/DCII USB2.0 DVB-S module
   4  *
   5  * Copyright (C) 2006,2007 Alan Nisota (alannisota@gmail.com)
   6  * Copyright (C) 2006,2007 Genpix Electronics (genpix@genpix-electronics.com)
   7  *
   8  * Thanks to GENPIX for the sample code used to implement this module.
   9  *
  10  * This module is based off the vp7045 and vp702x modules
  11  *
  12  * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
  13  */
  14 #include "gp8psk.h"
  15 #include "gp8psk-fe.h"
  16
  17 /* debug */
  18 static char bcm4500_firmware[] = "dvb-usb-gp8psk-02.fw";
  19 int dvb_usb_gp8psk_debug;
  20 module_param_named(debug,dvb_usb_gp8psk_debug, int, 0644);
  21 MODULE_PARM_DESC(debug, "set debugging level (1=info,xfer=2,rc=4 (or-able))." DVB_USB_DEBUG_STATUS);
  22
  23 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  24
  25 struct gp8psk_state {
  26         unsigned char data[80];
  27 };
  28
  29 static int gp8psk_usb_in_op(struct dvb_usb_device *d, u8 req, u16 value,
  30                             u16 index, u8 *b, int blen)
  31 {
  32         struct gp8psk_state *st = d->priv;
  33         int ret = 0,try = 0;
  34
  35         if (blen > sizeof(st->data))
  36                 return -EIO;
  37
  38         if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
  39                 return ret;
  40
  41         while (ret >= 0 && ret != blen && try < 3) {
  42                 ret = usb_control_msg(d->udev,
  43                         usb_rcvctrlpipe(d->udev,0),
  44                         req,
  45                         USB_TYPE_VENDOR | USB_DIR_IN,
  46                         value, index, st->data, blen,
  47                         2000);
  48                 deb_info("reading number %d (ret: %d)\n",try,ret);
  49                 try++;
  50         }
  51
  52         if (ret < 0 || ret != blen) {
  53                 warn("usb in %d operation failed.", req);
  54                 ret = -EIO;
  55         } else {
  56                 ret = 0;
  57                 memcpy(b, st->data, blen);
  58         }
  59
  60         deb_xfer("in: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
  61         debug_dump(b,blen,deb_xfer);
  62
  63         mutex_unlock(&d->usb_mutex);
  64
  65         return ret;
  66 }
  67
  68 static int gp8psk_usb_out_op(struct dvb_usb_device *d, u8 req, u16 value,
  69                              u16 index, u8 *b, int blen)
  70 {
  71         struct gp8psk_state *st = d->priv;
  72         int ret;
  73
  74         deb_xfer("out: req. %x, val: %x, ind: %x, buffer: ",req,value,index);
  75         debug_dump(b,blen,deb_xfer);
  76
  77         if (blen > sizeof(st->data))
  78                 return -EIO;
  79
  80         if ((ret = mutex_lock_interruptible(&d->usb_mutex)))
  81                 return ret;
  82
  83         memcpy(st->data, b, blen);
  84         if (usb_control_msg(d->udev,
  85                         usb_sndctrlpipe(d->udev,0),
  86                         req,
  87                         USB_TYPE_VENDOR | USB_DIR_OUT,
  88                         value, index, st->data, blen,
  89                         2000) != blen) {
  90                 warn("usb out operation failed.");
  91                 ret = -EIO;
  92         } else
  93                 ret = 0;
  94         mutex_unlock(&d->usb_mutex);
  95
  96         return ret;
  97 }
  98
  99
 100 static int gp8psk_get_fw_version(struct dvb_usb_device *d, u8 *fw_vers)
 101 {
 102         return gp8psk_usb_in_op(d, GET_FW_VERS, 0, 0, fw_vers, 6);
 103 }
 104
 105 static int gp8psk_get_fpga_version(struct dvb_usb_device *d, u8 *fpga_vers)
 106 {
 107         return gp8psk_usb_in_op(d, GET_FPGA_VERS, 0, 0, fpga_vers, 1);
 108 }
 109
 110 static void gp8psk_info(struct dvb_usb_device *d)
 111 {
 112         u8 fpga_vers, fw_vers[6];
 113
 114         if (!gp8psk_get_fw_version(d, fw_vers))
 115                 info("FW Version = %i.%02i.%i (0x%x)  Build %4i/%02i/%02i",
 116                 fw_vers[2], fw_vers[1], fw_vers[0], GP8PSK_FW_VERS(fw_vers),
 117                 2000 + fw_vers[5], fw_vers[4], fw_vers[3]);
 118         else
 119                 info("failed to get FW version");
 120
 121         if (!gp8psk_get_fpga_version(d, &fpga_vers))
 122                 info("FPGA Version = %i", fpga_vers);
 123         else
 124                 info("failed to get FPGA version");
 125 }
 126
 127 static int gp8psk_load_bcm4500fw(struct dvb_usb_device *d)
 128 {
 129         int ret;
 130         const struct firmware *fw = NULL;
 131         const u8 *ptr;
 132         u8 *buf;
 133         if ((ret = request_firmware(&fw, bcm4500_firmware,
 134                                         &d->udev->dev)) != 0) {
 135                 err("did not find the bcm4500 firmware file '%s' (status %d). You can use <kernel_dir>/scripts/get_dvb_firmware to get the firmware",
 136                         bcm4500_firmware,ret);
 137                 return ret;
 138         }
 139
 140         ret = -EINVAL;
 141
 142         if (gp8psk_usb_out_op(d, LOAD_BCM4500,1,0,NULL, 0))
 143                 goto out_rel_fw;
 144
 145         info("downloading bcm4500 firmware from file '%s'",bcm4500_firmware);
 146
 147         ptr = fw->data;
 148         buf = kmalloc(64, GFP_KERNEL);
 149         if (!buf) {
 150                 ret = -ENOMEM;
 151                 goto out_rel_fw;
 152         }
 153
 154         while (ptr[0] != 0xff) {
 155                 u16 buflen = ptr[0] + 4;
 156                 if (ptr + buflen >= fw->data + fw->size) {
 157                         err("failed to load bcm4500 firmware.");
 158                         goto out_free;
 159                 }
 160                 if (buflen > 64) {
 161                         err("firmware chunk size bigger than 64 bytes.");
 162                         goto out_free;
 163                 }
 164
 165                 memcpy(buf, ptr, buflen);
 166                 if (dvb_usb_generic_write(d, buf, buflen)) {
 167                         err("failed to load bcm4500 firmware.");
 168                         goto out_free;
 169                 }
 170                 ptr += buflen;
 171         }
 172
 173         ret = 0;
 174
 175 out_free:
 176         kfree(buf);
 177 out_rel_fw:
 178         release_firmware(fw);
 179
 180         return ret;
 181 }
 182
 183 static int gp8psk_power_ctrl(struct dvb_usb_device *d, int onoff)
 184 {
 185         u8 status = 0, buf;
 186         int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
 187
 188         if (onoff) {
 189                 gp8psk_usb_in_op(d, GET_8PSK_CONFIG,0,0,&status,1);
 190                 if (! (status & bm8pskStarted)) {  /* started */
 191                         if(gp_product_id == USB_PID_GENPIX_SKYWALKER_CW3K)
 192                                 gp8psk_usb_out_op(d, CW3K_INIT, 1, 0, NULL, 0);
 193                         if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
 194                                 return -EINVAL;
 195                         gp8psk_info(d);
 196                 }
 197
 198                 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
 199                         if (! (status & bm8pskFW_Loaded)) /* BCM4500 firmware loaded */
 200                                 if(gp8psk_load_bcm4500fw(d))
 201                                         return -EINVAL;
 202
 203                 if (! (status & bmIntersilOn)) /* LNB Power */
 204                         if (gp8psk_usb_in_op(d, START_INTERSIL, 1, 0,
 205                                         &buf, 1))
 206                                 return -EINVAL;
 207
 208                 /* Set DVB mode to 1 */
 209                 if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
 210                         if (gp8psk_usb_out_op(d, SET_DVB_MODE, 1, 0, NULL, 0))
 211                                 return -EINVAL;
 212                 /* Abort possible TS (if previous tune crashed) */
 213                 if (gp8psk_usb_out_op(d, ARM_TRANSFER, 0, 0, NULL, 0))
 214                         return -EINVAL;
 215         } else {
 216                 /* Turn off LNB power */
 217                 if (gp8psk_usb_in_op(d, START_INTERSIL, 0, 0, &buf, 1))
 218                         return -EINVAL;
 219                 /* Turn off 8psk power */
 220                 if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
 221                         return -EINVAL;
 222                 if(gp_product_id == USB_PID_GENPIX_SKYWALKER_CW3K)
 223                         gp8psk_usb_out_op(d, CW3K_INIT, 0, 0, NULL, 0);
 224         }
 225         return 0;
 226 }
 227
 228 static int gp8psk_bcm4500_reload(struct dvb_usb_device *d)
 229 {
 230         u8 buf;
 231         int gp_product_id = le16_to_cpu(d->udev->descriptor.idProduct);
 232
 233         deb_xfer("reloading firmware\n");
 234
 235         /* Turn off 8psk power */
 236         if (gp8psk_usb_in_op(d, BOOT_8PSK, 0, 0, &buf, 1))
 237                 return -EINVAL;
 238         /* Turn On 8psk power */
 239         if (gp8psk_usb_in_op(d, BOOT_8PSK, 1, 0, &buf, 1))
 240                 return -EINVAL;
 241         /* load BCM4500 firmware */
 242         if (gp_product_id == USB_PID_GENPIX_8PSK_REV_1_WARM)
 243                 if (gp8psk_load_bcm4500fw(d))
 244                         return -EINVAL;
 245         return 0;
 246 }
 247
 248 static int gp8psk_streaming_ctrl(struct dvb_usb_adapter *adap, int onoff)
 249 {
 250         return gp8psk_usb_out_op(adap->dev, ARM_TRANSFER, onoff, 0 , NULL, 0);
 251 }
 252
 253 /* Callbacks for gp8psk-fe.c */
 254
 255 static int gp8psk_fe_in(void *priv, u8 req, u16 value,
 256                             u16 index, u8 *b, int blen)
 257 {
 258         struct dvb_usb_device *d = priv;
 259
 260         return gp8psk_usb_in_op(d, req, value, index, b, blen);
 261 }
 262
 263 static int gp8psk_fe_out(void *priv, u8 req, u16 value,
 264                             u16 index, u8 *b, int blen)
 265 {
 266         struct dvb_usb_device *d = priv;
 267
 268         return gp8psk_usb_out_op(d, req, value, index, b, blen);
 269 }
 270
 271 static int gp8psk_fe_reload(void *priv)
 272 {
 273         struct dvb_usb_device *d = priv;
 274
 275         return gp8psk_bcm4500_reload(d);
 276 }
 277
 278 static const struct gp8psk_fe_ops gp8psk_fe_ops = {
 279         .in = gp8psk_fe_in,
 280         .out = gp8psk_fe_out,
 281         .reload = gp8psk_fe_reload,
 282 };
 283
 284 static int gp8psk_frontend_attach(struct dvb_usb_adapter *adap)
 285 {
 286         struct dvb_usb_device *d = adap->dev;
 287         int id = le16_to_cpu(d->udev->descriptor.idProduct);
 288         int is_rev1;
 289
 290         is_rev1 = (id == USB_PID_GENPIX_8PSK_REV_1_WARM) ? true : false;
 291
 292         adap->fe_adap[0].fe = dvb_attach(gp8psk_fe_attach,
 293                                          &gp8psk_fe_ops, d, is_rev1);
 294         return 0;
 295 }
 296
 297 static struct dvb_usb_device_properties gp8psk_properties;
 298
 299 static int gp8psk_usb_probe(struct usb_interface *intf,
 300                 const struct usb_device_id *id)
 301 {
 302         int ret;
 303         struct usb_device *udev = interface_to_usbdev(intf);
 304         ret = dvb_usb_device_init(intf, &gp8psk_properties,
 305                                   THIS_MODULE, NULL, adapter_nr);
 306         if (ret == 0) {
 307                 info("found Genpix USB device pID = %x (hex)",
 308                         le16_to_cpu(udev->descriptor.idProduct));
 309         }
 310         return ret;
 311 }
 312
 313 static struct usb_device_id gp8psk_usb_table [] = {
 314             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_1_COLD) },
 315             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_1_WARM) },
 316             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_8PSK_REV_2) },
 317             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_1) },
 318             { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_2) },
 319 /*          { USB_DEVICE(USB_VID_GENPIX, USB_PID_GENPIX_SKYWALKER_CW3K) }, */
 320             { 0 },
 321 };
 322 MODULE_DEVICE_TABLE(usb, gp8psk_usb_table);
 323
 324 static struct dvb_usb_device_properties gp8psk_properties = {
 325         .usb_ctrl = CYPRESS_FX2,
 326         .firmware = "dvb-usb-gp8psk-01.fw",
 327
 328         .size_of_priv = sizeof(struct gp8psk_state),
 329
 330         .num_adapters = 1,
 331         .adapter = {
 332                 {
 333                 .num_frontends = 1,
 334                 .fe = {{
 335                         .streaming_ctrl   = gp8psk_streaming_ctrl,
 336                         .frontend_attach  = gp8psk_frontend_attach,
 337                         /* parameter for the MPEG2-data transfer */
 338                         .stream = {
 339                                 .type = USB_BULK,
 340                                 .count = 7,
 341                                 .endpoint = 0x82,
 342                                 .u = {
 343                                         .bulk = {
 344                                                 .buffersize = 8192,
 345                                         }
 346                                 }
 347                         },
 348                 }},
 349                 }
 350         },
 351         .power_ctrl       = gp8psk_power_ctrl,
 352
 353         .generic_bulk_ctrl_endpoint = 0x01,
 354
 355         .num_device_descs = 4,
 356         .devices = {
 357                 { .name = "Genpix 8PSK-to-USB2 Rev.1 DVB-S receiver",
 358                   .cold_ids = { &gp8psk_usb_table[0], NULL },
 359                   .warm_ids = { &gp8psk_usb_table[1], NULL },
 360                 },
 361                 { .name = "Genpix 8PSK-to-USB2 Rev.2 DVB-S receiver",
 362                   .cold_ids = { NULL },
 363                   .warm_ids = { &gp8psk_usb_table[2], NULL },
 364                 },
 365                 { .name = "Genpix SkyWalker-1 DVB-S receiver",
 366                   .cold_ids = { NULL },
 367                   .warm_ids = { &gp8psk_usb_table[3], NULL },
 368                 },
 369                 { .name = "Genpix SkyWalker-2 DVB-S receiver",
 370                   .cold_ids = { NULL },
 371                   .warm_ids = { &gp8psk_usb_table[4], NULL },
 372                 },
 373                 { NULL },
 374         }
 375 };
 376
 377 /* usb specific object needed to register this driver with the usb subsystem */
 378 static struct usb_driver gp8psk_usb_driver = {
 379         .name           = "dvb_usb_gp8psk",
 380         .probe          = gp8psk_usb_probe,
 381         .disconnect = dvb_usb_device_exit,
 382         .id_table       = gp8psk_usb_table,
 383 };
 384
 385 module_usb_driver(gp8psk_usb_driver);
 386
 387 MODULE_AUTHOR("Alan Nisota <alannisota@gamil.com>");
 388 MODULE_DESCRIPTION("Driver for Genpix DVB-S");
 389 MODULE_VERSION("1.1");
 390 MODULE_LICENSE("GPL");