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[req->data_len];
  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         if (requesttype == (USB_TYPE_VENDOR | USB_DIR_OUT)) {
  66                 /* write */
  67                 memcpy(buf, req->data, req->data_len);
  68                 pipe = usb_sndctrlpipe(udev, 0);
  69         } else {
  70                 /* read */
  71                 pipe = usb_rcvctrlpipe(udev, 0);
  72         }
  73
  74         msleep(1); /* avoid I2C errors */
  75
  76         ret = usb_control_msg(udev, pipe, request, requesttype, value, index,
  77                                 buf, sizeof(buf), CE6230_USB_TIMEOUT);
  78
  79         ce6230_debug_dump(request, requesttype, value, index, buf,
  80                 req->data_len, deb_xfer);
  81
  82         if (ret < 0)
  83                 deb_info("%s: usb_control_msg failed:%d\n", __func__, ret);
  84         else
  85                 ret = 0;
  86
  87         /* read request, copy returned data to return buf */
  88         if (!ret && requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
  89                 memcpy(req->data, buf, req->data_len);
  90
  91 error:
  92         return ret;
  93 }
  94
  95 static int ce6230_ctrl_msg(struct dvb_usb_device *d, struct req_t *req)
  96 {
  97         return ce6230_rw_udev(d->udev, req);
  98 }
  99
 100 /* I2C */
 101 static int ce6230_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[],
 102                            int num)
 103 {
 104         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 105         int i = 0;
 106         struct req_t req;
 107         int ret = 0;
 108         memset(&req, 0, sizeof(&req));
 109
 110         if (num > 2)
 111                 return -EINVAL;
 112
 113         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 114                 return -EAGAIN;
 115
 116         while (i < num) {
 117                 if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
 118                         if (msg[i].addr ==
 119                                 ce6230_zl10353_config.demod_address) {
 120                                 req.cmd = DEMOD_READ;
 121                                 req.value = msg[i].addr >> 1;
 122                                 req.index = msg[i].buf[0];
 123                                 req.data_len = msg[i+1].len;
 124                                 req.data = &msg[i+1].buf[0];
 125                                 ret = ce6230_ctrl_msg(d, &req);
 126                         } else {
 127                                 err("i2c read not implemented");
 128                                 ret = -EPERM;
 129                         }
 130                         i += 2;
 131                 } else {
 132                         if (msg[i].addr ==
 133                                 ce6230_zl10353_config.demod_address) {
 134                                 req.cmd = DEMOD_WRITE;
 135                                 req.value = msg[i].addr >> 1;
 136                                 req.index = msg[i].buf[0];
 137                                 req.data_len = msg[i].len-1;
 138                                 req.data = &msg[i].buf[1];
 139                                 ret = ce6230_ctrl_msg(d, &req);
 140                         } else {
 141                                 req.cmd = I2C_WRITE;
 142                                 req.value = 0x2000 + (msg[i].addr >> 1);
 143                                 req.index = 0x0000;
 144                                 req.data_len = msg[i].len;
 145                                 req.data = &msg[i].buf[0];
 146                                 ret = ce6230_ctrl_msg(d, &req);
 147                         }
 148                         i += 1;
 149                 }
 150                 if (ret)
 151                         break;
 152         }
 153
 154         mutex_unlock(&d->i2c_mutex);
 155         return ret ? ret : i;
 156 }
 157
 158 static u32 ce6230_i2c_func(struct i2c_adapter *adapter)
 159 {
 160         return I2C_FUNC_I2C;
 161 }
 162
 163 static struct i2c_algorithm ce6230_i2c_algo = {
 164         .master_xfer   = ce6230_i2c_xfer,
 165         .functionality = ce6230_i2c_func,
 166 };
 167
 168 /* Callbacks for DVB USB */
 169 static struct zl10353_config ce6230_zl10353_config = {
 170         .demod_address = 0x1e,
 171         .adc_clock = 450000,
 172         .if2 = 45700,
 173         .no_tuner = 1,
 174         .parallel_ts = 1,
 175         .clock_ctl_1 = 0x34,
 176         .pll_0 = 0x0e,
 177 };
 178
 179 static int ce6230_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
 180 {
 181         deb_info("%s:\n", __func__);
 182         adap->fe = dvb_attach(zl10353_attach, &ce6230_zl10353_config,
 183                 &adap->dev->i2c_adap);
 184         if (adap->fe == NULL)
 185                 return -ENODEV;
 186         return 0;
 187 }
 188
 189 static struct mxl5005s_config ce6230_mxl5003s_config = {
 190         .i2c_address     = 0xc6,
 191         .if_freq         = IF_FREQ_4570000HZ,
 192         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
 193         .agc_mode        = MXL_SINGLE_AGC,
 194         .tracking_filter = MXL_TF_DEFAULT,
 195         .rssi_enable     = MXL_RSSI_ENABLE,
 196         .cap_select      = MXL_CAP_SEL_ENABLE,
 197         .div_out         = MXL_DIV_OUT_4,
 198         .clock_out       = MXL_CLOCK_OUT_DISABLE,
 199         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
 200         .top             = MXL5005S_TOP_25P2,
 201         .mod_mode        = MXL_DIGITAL_MODE,
 202         .if_mode         = MXL_ZERO_IF,
 203         .AgcMasterByte   = 0x00,
 204 };
 205
 206 static int ce6230_mxl5003s_tuner_attach(struct dvb_usb_adapter *adap)
 207 {
 208         int ret;
 209         deb_info("%s:\n", __func__);
 210         ret = dvb_attach(mxl5005s_attach, adap->fe, &adap->dev->i2c_adap,
 211                         &ce6230_mxl5003s_config) == NULL ? -ENODEV : 0;
 212         return ret;
 213 }
 214
 215 static int ce6230_power_ctrl(struct dvb_usb_device *d, int onoff)
 216 {
 217         int ret;
 218         deb_info("%s: onoff:%d\n", __func__, onoff);
 219
 220         /* InterfaceNumber 1 / AlternateSetting 0     idle
 221            InterfaceNumber 1 / AlternateSetting 1     streaming */
 222         ret = usb_set_interface(d->udev, 1, onoff);
 223         if (ret)
 224                 err("usb_set_interface failed with error:%d", ret);
 225
 226         return ret;
 227 }
 228
 229 /* DVB USB Driver stuff */
 230 static struct dvb_usb_device_properties ce6230_properties;
 231
 232 static int ce6230_probe(struct usb_interface *intf,
 233                         const struct usb_device_id *id)
 234 {
 235         int ret = 0;
 236         struct dvb_usb_device *d = NULL;
 237
 238         deb_info("%s: interface:%d\n", __func__,
 239                 intf->cur_altsetting->desc.bInterfaceNumber);
 240
 241         if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
 242                 ret = dvb_usb_device_init(intf, &ce6230_properties, THIS_MODULE,
 243                         &d, adapter_nr);
 244                 if (ret)
 245                         err("init failed with error:%d\n", ret);
 246         }
 247
 248         return ret;
 249 }
 250
 251 static struct usb_device_id ce6230_table[] = {
 252         { USB_DEVICE(USB_VID_INTEL, USB_PID_INTEL_CE9500) },
 253         { } /* Terminating entry */
 254 };
 255 MODULE_DEVICE_TABLE(usb, ce6230_table);
 256
 257 static struct dvb_usb_device_properties ce6230_properties = {
 258         .caps = DVB_USB_IS_AN_I2C_ADAPTER,
 259
 260         .usb_ctrl = DEVICE_SPECIFIC,
 261         .no_reconnect = 1,
 262
 263         .size_of_priv = 0,
 264
 265         .num_adapters = 1,
 266         .adapter = {
 267                 {
 268                         .frontend_attach  = ce6230_zl10353_frontend_attach,
 269                         .tuner_attach     = ce6230_mxl5003s_tuner_attach,
 270                         .stream = {
 271                                 .type = USB_BULK,
 272                                 .count = 6,
 273                                 .endpoint = 0x82,
 274                                 .u = {
 275                                         .bulk = {
 276                                                 .buffersize = 512,
 277                                         }
 278                                 }
 279                         },
 280                 }
 281         },
 282
 283         .power_ctrl = ce6230_power_ctrl,
 284
 285         .i2c_algo = &ce6230_i2c_algo,
 286
 287         .num_device_descs = 1,
 288         .devices = {
 289                 {
 290                         .name = "Intel CE9500 reference design",
 291                         .cold_ids = {NULL},
 292                         .warm_ids = {&ce6230_table[0], NULL},
 293                 },
 294         }
 295 };
 296
 297 static struct usb_driver ce6230_driver = {
 298         .name       = "dvb_usb_ce6230",
 299         .probe      = ce6230_probe,
 300         .disconnect = dvb_usb_device_exit,
 301         .id_table   = ce6230_table,
 302 };
 303
 304 /* module stuff */
 305 static int __init ce6230_module_init(void)
 306 {
 307         int ret;
 308         deb_info("%s:\n", __func__);
 309         ret = usb_register(&ce6230_driver);
 310         if (ret)
 311                 err("usb_register failed with error:%d", ret);
 312
 313         return ret;
 314 }
 315
 316 static void __exit ce6230_module_exit(void)
 317 {
 318         deb_info("%s:\n", __func__);
 319         /* deregister this driver from the USB subsystem */
 320         usb_deregister(&ce6230_driver);
 321 }
 322
 323 module_init(ce6230_module_init);
 324 module_exit(ce6230_module_exit);
 325
 326 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 327 MODULE_DESCRIPTION("Driver for Intel CE6230 DVB-T USB2.0");
 328 MODULE_LICENSE("GPL");