drivers/media/usb/dvb-usb-v2/ce6230.c

   1 /*
   2  * Intel CE6230 DVB USB driver
   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  */
  17
  18 #include "ce6230.h"
  19
  20 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  21
  22 static int ce6230_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
  23 {
  24         int ret;
  25         unsigned int pipe;
  26         u8 request;
  27         u8 requesttype;
  28         u16 value;
  29         u16 index;
  30         u8 *buf;
  31
  32         request = req->cmd;
  33         value = req->value;
  34         index = req->index;
  35
  36         switch (req->cmd) {
  37         case I2C_READ:
  38         case DEMOD_READ:
  39         case REG_READ:
  40                 requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
  41                 break;
  42         case I2C_WRITE:
  43         case DEMOD_WRITE:
  44         case REG_WRITE:
  45                 requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
  46                 break;
  47         default:
  48                 dev_err(&d->udev->dev, "%s: unknown command=%02x\n",
  49                                 KBUILD_MODNAME, req->cmd);
  50                 ret = -EINVAL;
  51                 goto error;
  52         }
  53
  54         buf = kmalloc(req->data_len, GFP_KERNEL);
  55         if (!buf) {
  56                 ret = -ENOMEM;
  57                 goto error;
  58         }
  59
  60         if (requesttype == (USB_TYPE_VENDOR | USB_DIR_OUT)) {
  61                 /* write */
  62                 memcpy(buf, req->data, req->data_len);
  63                 pipe = usb_sndctrlpipe(d->udev, 0);
  64         } else {
  65                 /* read */
  66                 pipe = usb_rcvctrlpipe(d->udev, 0);
  67         }
  68
  69         msleep(1); /* avoid I2C errors */
  70
  71         ret = usb_control_msg(d->udev, pipe, request, requesttype, value, index,
  72                         buf, req->data_len, CE6230_USB_TIMEOUT);
  73
  74         dvb_usb_dbg_usb_control_msg(d->udev, request, requesttype, value, index,
  75                         buf, req->data_len);
  76
  77         if (ret < 0)
  78                 dev_err(&d->udev->dev, "%s: usb_control_msg() failed=%d\n",
  79                                 KBUILD_MODNAME, ret);
  80         else
  81                 ret = 0;
  82
  83         /* read request, copy returned data to return buf */
  84         if (!ret && requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
  85                 memcpy(req->data, buf, req->data_len);
  86
  87         kfree(buf);
  88 error:
  89         return ret;
  90 }
  91
  92 /* I2C */
  93 static struct zl10353_config ce6230_zl10353_config;
  94
  95 static int ce6230_i2c_master_xfer(struct i2c_adapter *adap,
  96                 struct i2c_msg msg[], int num)
  97 {
  98         struct dvb_usb_device *d = i2c_get_adapdata(adap);
  99         int ret = 0, i = 0;
 100         struct usb_req req;
 101
 102         if (num > 2)
 103                 return -EOPNOTSUPP;
 104
 105         memset(&req, 0, sizeof(req));
 106
 107         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 108                 return -EAGAIN;
 109
 110         while (i < num) {
 111                 if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
 112                         if (msg[i].addr ==
 113                                 ce6230_zl10353_config.demod_address) {
 114                                 req.cmd = DEMOD_READ;
 115                                 req.value = msg[i].addr >> 1;
 116                                 req.index = msg[i].buf[0];
 117                                 req.data_len = msg[i+1].len;
 118                                 req.data = &msg[i+1].buf[0];
 119                                 ret = ce6230_ctrl_msg(d, &req);
 120                         } else {
 121                                 dev_err(&d->udev->dev, "%s: I2C read not " \
 122                                                 "implemented\n",
 123                                                 KBUILD_MODNAME);
 124                                 ret = -EOPNOTSUPP;
 125                         }
 126                         i += 2;
 127                 } else {
 128                         if (msg[i].addr ==
 129                                 ce6230_zl10353_config.demod_address) {
 130                                 req.cmd = DEMOD_WRITE;
 131                                 req.value = msg[i].addr >> 1;
 132                                 req.index = msg[i].buf[0];
 133                                 req.data_len = msg[i].len-1;
 134                                 req.data = &msg[i].buf[1];
 135                                 ret = ce6230_ctrl_msg(d, &req);
 136                         } else {
 137                                 req.cmd = I2C_WRITE;
 138                                 req.value = 0x2000 + (msg[i].addr >> 1);
 139                                 req.index = 0x0000;
 140                                 req.data_len = msg[i].len;
 141                                 req.data = &msg[i].buf[0];
 142                                 ret = ce6230_ctrl_msg(d, &req);
 143                         }
 144                         i += 1;
 145                 }
 146                 if (ret)
 147                         break;
 148         }
 149
 150         mutex_unlock(&d->i2c_mutex);
 151         return ret ? ret : i;
 152 }
 153
 154 static u32 ce6230_i2c_functionality(struct i2c_adapter *adapter)
 155 {
 156         return I2C_FUNC_I2C;
 157 }
 158
 159 static struct i2c_algorithm ce6230_i2c_algorithm = {
 160         .master_xfer   = ce6230_i2c_master_xfer,
 161         .functionality = ce6230_i2c_functionality,
 162 };
 163
 164 /* Callbacks for DVB USB */
 165 static struct zl10353_config ce6230_zl10353_config = {
 166         .demod_address = 0x1e,
 167         .adc_clock = 450000,
 168         .if2 = 45700,
 169         .no_tuner = 1,
 170         .parallel_ts = 1,
 171         .clock_ctl_1 = 0x34,
 172         .pll_0 = 0x0e,
 173 };
 174
 175 static int ce6230_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
 176 {
 177         struct dvb_usb_device *d = adap_to_d(adap);
 178
 179         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 180
 181         adap->fe[0] = dvb_attach(zl10353_attach, &ce6230_zl10353_config,
 182                         &d->i2c_adap);
 183         if (adap->fe[0] == NULL)
 184                 return -ENODEV;
 185
 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         struct dvb_usb_device *d = adap_to_d(adap);
 209         int ret;
 210
 211         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 212
 213         ret = dvb_attach(mxl5005s_attach, adap->fe[0], &d->i2c_adap,
 214                         &ce6230_mxl5003s_config) == NULL ? -ENODEV : 0;
 215         return ret;
 216 }
 217
 218 static int ce6230_power_ctrl(struct dvb_usb_device *d, int onoff)
 219 {
 220         int ret;
 221
 222         dev_dbg(&d->udev->dev, "%s: onoff=%d\n", __func__, onoff);
 223
 224         /* InterfaceNumber 1 / AlternateSetting 0     idle
 225            InterfaceNumber 1 / AlternateSetting 1     streaming */
 226         ret = usb_set_interface(d->udev, 1, onoff);
 227         if (ret)
 228                 dev_err(&d->udev->dev, "%s: usb_set_interface() failed=%d\n",
 229                                 KBUILD_MODNAME, ret);
 230
 231         return ret;
 232 }
 233
 234 /* DVB USB Driver stuff */
 235 static struct dvb_usb_device_properties ce6230_props = {
 236         .driver_name = KBUILD_MODNAME,
 237         .owner = THIS_MODULE,
 238         .adapter_nr = adapter_nr,
 239         .bInterfaceNumber = 1,
 240
 241         .i2c_algo = &ce6230_i2c_algorithm,
 242         .power_ctrl = ce6230_power_ctrl,
 243         .frontend_attach = ce6230_zl10353_frontend_attach,
 244         .tuner_attach = ce6230_mxl5003s_tuner_attach,
 245
 246         .num_adapters = 1,
 247         .adapter = {
 248                 {
 249                         .stream = {
 250                                 .type = USB_BULK,
 251                                 .count = 6,
 252                                 .endpoint = 0x82,
 253                                 .u = {
 254                                         .bulk = {
 255                                                 .buffersize = (16 * 512),
 256                                         }
 257                                 }
 258                         },
 259                 }
 260         },
 261 };
 262
 263 static const struct usb_device_id ce6230_id_table[] = {
 264         { DVB_USB_DEVICE(USB_VID_INTEL, USB_PID_INTEL_CE9500,
 265                 &ce6230_props, "Intel CE9500 reference design", NULL) },
 266         { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A310,
 267                 &ce6230_props, "AVerMedia A310 USB 2.0 DVB-T tuner", NULL) },
 268         { }
 269 };
 270 MODULE_DEVICE_TABLE(usb, ce6230_id_table);
 271
 272 static struct usb_driver ce6230_usb_driver = {
 273         .name = KBUILD_MODNAME,
 274         .id_table = ce6230_id_table,
 275         .probe = dvb_usbv2_probe,
 276         .disconnect = dvb_usbv2_disconnect,
 277         .suspend = dvb_usbv2_suspend,
 278         .resume = dvb_usbv2_resume,
 279         .reset_resume = dvb_usbv2_reset_resume,
 280         .no_dynamic_id = 1,
 281         .soft_unbind = 1,
 282 };
 283
 284 module_usb_driver(ce6230_usb_driver);
 285
 286 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 287 MODULE_DESCRIPTION("Intel CE6230 driver");
 288 MODULE_LICENSE("GPL");