drivers/media/dvb/dvb-usb/ce6230.c

   1 /*
   2  * DVB USB Linux driver for Intel CE6230 DVB-T USB2.0 receiver
   3  *
   4  * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
   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  *    GNU General Public License for more details.
  15  *
  16  *    You should have received a copy of the GNU General Public License
  17  *    along with this program; if not, write to the Free Software
  18  *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19  *
  20  */
  21
  22 #include "ce6230.h"
  23 #include "zl10353.h"
  24 #include "mxl5005s.h"
  25
  26 /* debug */
  27 static int dvb_usb_ce6230_debug;
  28 module_param_named(debug, dvb_usb_ce6230_debug, int, 0644);
  29 MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS);
  30 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  31
  32 static struct zl10353_config ce6230_zl10353_config;
  33
  34 static int ce6230_rw_udev(struct usb_device *udev, struct req_t *req)
  35 {
  36         int ret;
  37         unsigned int pipe;
  38         u8 request;
  39         u8 requesttype;
  40         u16 value;
  41         u16 index;
  42         u8 *buf;
  43
  44         request = req->cmd;
  45         value = req->value;
  46         index = req->index;
  47
  48         switch (req->cmd) {
  49         case I2C_READ:
  50         case DEMOD_READ:
  51         case REG_READ:
  52                 requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
  53                 break;
  54         case I2C_WRITE:
  55         case DEMOD_WRITE:
  56         case REG_WRITE:
  57                 requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
  58                 break;
  59         default:
  60                 err("unknown command:%02x", req->cmd);
  61                 ret = -EPERM;
  62                 goto error;
  63         }
  64
  65         buf = kmalloc(req->data_len, GFP_KERNEL);
  66         if (!buf) {
  67                 ret = -ENOMEM;
  68                 goto error;
  69         }
  70
  71         if (requesttype == (USB_TYPE_VENDOR | USB_DIR_OUT)) {
  72                 /* write */
  73                 memcpy(buf, req->data, req->data_len);
  74                 pipe = usb_sndctrlpipe(udev, 0);
  75         } else {
  76                 /* read */
  77                 pipe = usb_rcvctrlpipe(udev, 0);
  78         }
  79
  80         msleep(1); /* avoid I2C errors */
  81
  82         ret = usb_control_msg(udev, pipe, request, requesttype, value, index,
  83                                 buf, req->data_len, CE6230_USB_TIMEOUT);
  84
  85         ce6230_debug_dump(request, requesttype, value, index, buf,
  86                 req->data_len, deb_xfer);
  87
  88         if (ret < 0)
  89                 deb_info("%s: usb_control_msg failed:%d\n", __func__, ret);
  90         else
  91                 ret = 0;
  92
  93         /* read request, copy returned data to return buf */
  94         if (!ret && requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
  95                 memcpy(req->data, buf, req->data_len);
  96
  97         kfree(buf);
  98 error:
  99         return ret;
 100 }
 101
 102 static int ce6230_ctrl_msg(struct dvb_usb_device *d, struct req_t *req)
 103 {
 104         return ce6230_rw_udev(d->udev, req);
 105 }
 106
 107 /* I2C */
 108 static int ce6230_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
 109                            int num)
 110 {
 111         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 112         int i = 0;
 113         struct req_t req;
 114         int ret = 0;
 115         memset(&req, 0, sizeof(req));
 116
 117         if (num > 2)
 118                 return -EINVAL;
 119
 120         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 121                 return -EAGAIN;
 122
 123         while (i < num) {
 124                 if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
 125                         if (msg[i].addr ==
 126                                 ce6230_zl10353_config.demod_address) {
 127                                 req.cmd = DEMOD_READ;
 128                                 req.value = msg[i].addr >> 1;
 129                                 req.index = msg[i].buf[0];
 130                                 req.data_len = msg[i+1].len;
 131                                 req.data = &msg[i+1].buf[0];
 132                                 ret = ce6230_ctrl_msg(d, &req);
 133                         } else {
 134                                 err("i2c read not implemented");
 135                                 ret = -EPERM;
 136                         }
 137                         i += 2;
 138                 } else {
 139                         if (msg[i].addr ==
 140                                 ce6230_zl10353_config.demod_address) {
 141                                 req.cmd = DEMOD_WRITE;
 142                                 req.value = msg[i].addr >> 1;
 143                                 req.index = msg[i].buf[0];
 144                                 req.data_len = msg[i].len-1;
 145                                 req.data = &msg[i].buf[1];
 146                                 ret = ce6230_ctrl_msg(d, &req);
 147                         } else {
 148                                 req.cmd = I2C_WRITE;
 149                                 req.value = 0x2000 + (msg[i].addr >> 1);
 150                                 req.index = 0x0000;
 151                                 req.data_len = msg[i].len;
 152                                 req.data = &msg[i].buf[0];
 153                                 ret = ce6230_ctrl_msg(d, &req);
 154                         }
 155                         i += 1;
 156                 }
 157                 if (ret)
 158                         break;
 159         }
 160
 161         mutex_unlock(&d->i2c_mutex);
 162         return ret ? ret : i;
 163 }
 164
 165 static u32 ce6230_i2c_func(struct i2c_adapter *adapter)
 166 {
 167         return I2C_FUNC_I2C;
 168 }
 169
 170 static struct i2c_algorithm ce6230_i2c_algo = {
 171         .master_xfer   = ce6230_i2c_xfer,
 172         .functionality = ce6230_i2c_func,
 173 };
 174
 175 /* Callbacks for DVB USB */
 176 static struct zl10353_config ce6230_zl10353_config = {
 177         .demod_address = 0x1e,
 178         .adc_clock = 450000,
 179         .if2 = 45700,
 180         .no_tuner = 1,
 181         .parallel_ts = 1,
 182         .clock_ctl_1 = 0x34,
 183         .pll_0 = 0x0e,
 184 };
 185
 186 static int ce6230_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
 187 {
 188         deb_info("%s:\n", __func__);
 189         adap->fe = dvb_attach(zl10353_attach, &ce6230_zl10353_config,
 190                 &adap->dev->i2c_adap);
 191         if (adap->fe == NULL)
 192                 return -ENODEV;
 193         return 0;
 194 }
 195
 196 static struct mxl5005s_config ce6230_mxl5003s_config = {
 197         .i2c_address     = 0xc6,
 198         .if_freq         = IF_FREQ_4570000HZ,
 199         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
 200         .agc_mode        = MXL_SINGLE_AGC,
 201         .tracking_filter = MXL_TF_DEFAULT,
 202         .rssi_enable     = MXL_RSSI_ENABLE,
 203         .cap_select      = MXL_CAP_SEL_ENABLE,
 204         .div_out         = MXL_DIV_OUT_4,
 205         .clock_out       = MXL_CLOCK_OUT_DISABLE,
 206         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
 207         .top             = MXL5005S_TOP_25P2,
 208         .mod_mode        = MXL_DIGITAL_MODE,
 209         .if_mode         = MXL_ZERO_IF,
 210         .AgcMasterByte   = 0x00,
 211 };
 212
 213 static int ce6230_mxl5003s_tuner_attach(struct dvb_usb_adapter *adap)
 214 {
 215         int ret;
 216         deb_info("%s:\n", __func__);
 217         ret = dvb_attach(mxl5005s_attach, adap->fe, &adap->dev->i2c_adap,
 218                         &ce6230_mxl5003s_config) == NULL ? -ENODEV : 0;
 219         return ret;
 220 }
 221
 222 static int ce6230_power_ctrl(struct dvb_usb_device *d, int onoff)
 223 {
 224         int ret;
 225         deb_info("%s: onoff:%d\n", __func__, onoff);
 226
 227         /* InterfaceNumber 1 / AlternateSetting 0     idle
 228            InterfaceNumber 1 / AlternateSetting 1     streaming */
 229         ret = usb_set_interface(d->udev, 1, onoff);
 230         if (ret)
 231                 err("usb_set_interface failed with error:%d", ret);
 232
 233         return ret;
 234 }
 235
 236 /* DVB USB Driver stuff */
 237 static struct dvb_usb_device_properties ce6230_properties;
 238
 239 static int ce6230_probe(struct usb_interface *intf,
 240                         const struct usb_device_id *id)
 241 {
 242         int ret = 0;
 243         struct dvb_usb_device *d = NULL;
 244
 245         deb_info("%s: interface:%d\n", __func__,
 246                 intf->cur_altsetting->desc.bInterfaceNumber);
 247
 248         if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
 249                 ret = dvb_usb_device_init(intf, &ce6230_properties, THIS_MODULE,
 250                         &d, adapter_nr);
 251                 if (ret)
 252                         err("init failed with error:%d\n", ret);
 253         }
 254
 255         return ret;
 256 }
 257
 258 static struct usb_device_id ce6230_table[] = {
 259         { USB_DEVICE(USB_VID_INTEL, USB_PID_INTEL_CE9500) },
 260         { USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A310) },
 261         { } /* Terminating entry */
 262 };
 263 MODULE_DEVICE_TABLE(usb, ce6230_table);
 264
 265 static struct dvb_usb_device_properties ce6230_properties = {
 266         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 267
 268         .usb_ctrl = DEVICE_SPECIFIC,
 269         .no_reconnect = 1,
 270
 271         .size_of_priv = 0,
 272
 273         .num_adapters = 1,
 274         .adapter = {
 275                 {
 276                         .frontend_attach  = ce6230_zl10353_frontend_attach,
 277                         .tuner_attach     = ce6230_mxl5003s_tuner_attach,
 278                         .stream = {
 279                                 .type = USB_BULK,
 280                                 .count = 6,
 281                                 .endpoint = 0x82,
 282                                 .u = {
 283                                         .bulk = {
 284                                                 .buffersize = (16*512),
 285                                         }
 286                                 }
 287                         },
 288                 }
 289         },
 290
 291         .power_ctrl = ce6230_power_ctrl,
 292
 293         .i2c_algo = &ce6230_i2c_algo,
 294
 295         .num_device_descs = 2,
 296         .devices = {
 297                 {
 298                         .name = "Intel CE9500 reference design",
 299                         .cold_ids = {NULL},
 300                         .warm_ids = {&ce6230_table[0], NULL},
 301                 },
 302                 {
 303                         .name = "AVerMedia A310 USB 2.0 DVB-T tuner",
 304                         .cold_ids = {NULL},
 305                         .warm_ids = {&ce6230_table[1], NULL},
 306                 },
 307         }
 308 };
 309
 310 static struct usb_driver ce6230_driver = {
 311         .name       = "dvb_usb_ce6230",
 312         .probe      = ce6230_probe,
 313         .disconnect = dvb_usb_device_exit,
 314         .id_table   = ce6230_table,
 315 };
 316
 317 /* module stuff */
 318 static int __init ce6230_module_init(void)
 319 {
 320         int ret;
 321         deb_info("%s:\n", __func__);
 322         ret = usb_register(&ce6230_driver);
 323         if (ret)
 324                 err("usb_register failed with error:%d", ret);
 325
 326         return ret;
 327 }
 328
 329 static void __exit ce6230_module_exit(void)
 330 {
 331         deb_info("%s:\n", __func__);
 332         /* deregister this driver from the USB subsystem */
 333         usb_deregister(&ce6230_driver);
 334 }
 335
 336 module_init(ce6230_module_init);
 337 module_exit(ce6230_module_exit);
 338
 339 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 340 MODULE_DESCRIPTION("Driver for Intel CE6230 DVB-T USB2.0");
 341 MODULE_LICENSE("GPL");