kernel/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  *    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
  24 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  25
  26 static int ce6230_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
  27 {
  28         int ret;
  29         unsigned int pipe;
  30         u8 request;
  31         u8 requesttype;
  32         u16 value;
  33         u16 index;
  34         u8 *buf;
  35
  36         request = req->cmd;
  37         value = req->value;
  38         index = req->index;
  39
  40         switch (req->cmd) {
  41         case I2C_READ:
  42         case DEMOD_READ:
  43         case REG_READ:
  44                 requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
  45                 break;
  46         case I2C_WRITE:
  47         case DEMOD_WRITE:
  48         case REG_WRITE:
  49                 requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
  50                 break;
  51         default:
  52                 dev_err(&d->udev->dev, "%s: unknown command=%02x\n",
  53                                 KBUILD_MODNAME, req->cmd);
  54                 ret = -EINVAL;
  55                 goto error;
  56         }
  57
  58         buf = kmalloc(req->data_len, GFP_KERNEL);
  59         if (!buf) {
  60                 ret = -ENOMEM;
  61                 goto error;
  62         }
  63
  64         if (requesttype == (USB_TYPE_VENDOR | USB_DIR_OUT)) {
  65                 /* write */
  66                 memcpy(buf, req->data, req->data_len);
  67                 pipe = usb_sndctrlpipe(d->udev, 0);
  68         } else {
  69                 /* read */
  70                 pipe = usb_rcvctrlpipe(d->udev, 0);
  71         }
  72
  73         msleep(1); /* avoid I2C errors */
  74
  75         ret = usb_control_msg(d->udev, pipe, request, requesttype, value, index,
  76                         buf, req->data_len, CE6230_USB_TIMEOUT);
  77
  78         dvb_usb_dbg_usb_control_msg(d->udev, request, requesttype, value, index,
  79                         buf, req->data_len);
  80
  81         if (ret < 0)
  82                 dev_err(&d->udev->dev, "%s: usb_control_msg() failed=%d\n",
  83                                 KBUILD_MODNAME, 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         kfree(buf);
  92 error:
  93         return ret;
  94 }
  95
  96 /* I2C */
  97 static struct zl10353_config ce6230_zl10353_config;
  98
  99 static int ce6230_i2c_master_xfer(struct i2c_adapter *adap,
 100                 struct i2c_msg msg[], int num)
 101 {
 102         struct dvb_usb_device *d = i2c_get_adapdata(adap);
 103         int ret = 0, i = 0;
 104         struct usb_req req;
 105
 106         if (num > 2)
 107                 return -EOPNOTSUPP;
 108
 109         memset(&req, 0, sizeof(req));
 110
 111         if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
 112                 return -EAGAIN;
 113
 114         while (i < num) {
 115                 if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
 116                         if (msg[i].addr ==
 117                                 ce6230_zl10353_config.demod_address) {
 118                                 req.cmd = DEMOD_READ;
 119                                 req.value = msg[i].addr >> 1;
 120                                 req.index = msg[i].buf[0];
 121                                 req.data_len = msg[i+1].len;
 122                                 req.data = &msg[i+1].buf[0];
 123                                 ret = ce6230_ctrl_msg(d, &req);
 124                         } else {
 125                                 dev_err(&d->udev->dev, "%s: I2C read not " \
 126                                                 "implemented\n",
 127                                                 KBUILD_MODNAME);
 128                                 ret = -EOPNOTSUPP;
 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_functionality(struct i2c_adapter *adapter)
 159 {
 160         return I2C_FUNC_I2C;
 161 }
 162
 163 static struct i2c_algorithm ce6230_i2c_algorithm = {
 164         .master_xfer   = ce6230_i2c_master_xfer,
 165         .functionality = ce6230_i2c_functionality,
 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         struct dvb_usb_device *d = adap_to_d(adap);
 182
 183         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 184
 185         adap->fe[0] = dvb_attach(zl10353_attach, &ce6230_zl10353_config,
 186                         &d->i2c_adap);
 187         if (adap->fe[0] == NULL)
 188                 return -ENODEV;
 189
 190         return 0;
 191 }
 192
 193 static struct mxl5005s_config ce6230_mxl5003s_config = {
 194         .i2c_address     = 0xc6,
 195         .if_freq         = IF_FREQ_4570000HZ,
 196         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
 197         .agc_mode        = MXL_SINGLE_AGC,
 198         .tracking_filter = MXL_TF_DEFAULT,
 199         .rssi_enable     = MXL_RSSI_ENABLE,
 200         .cap_select      = MXL_CAP_SEL_ENABLE,
 201         .div_out         = MXL_DIV_OUT_4,
 202         .clock_out       = MXL_CLOCK_OUT_DISABLE,
 203         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
 204         .top             = MXL5005S_TOP_25P2,
 205         .mod_mode        = MXL_DIGITAL_MODE,
 206         .if_mode         = MXL_ZERO_IF,
 207         .AgcMasterByte   = 0x00,
 208 };
 209
 210 static int ce6230_mxl5003s_tuner_attach(struct dvb_usb_adapter *adap)
 211 {
 212         struct dvb_usb_device *d = adap_to_d(adap);
 213         int ret;
 214
 215         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 216
 217         ret = dvb_attach(mxl5005s_attach, adap->fe[0], &d->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
 226         dev_dbg(&d->udev->dev, "%s: onoff=%d\n", __func__, onoff);
 227
 228         /* InterfaceNumber 1 / AlternateSetting 0     idle
 229            InterfaceNumber 1 / AlternateSetting 1     streaming */
 230         ret = usb_set_interface(d->udev, 1, onoff);
 231         if (ret)
 232                 dev_err(&d->udev->dev, "%s: usb_set_interface() failed=%d\n",
 233                                 KBUILD_MODNAME, ret);
 234
 235         return ret;
 236 }
 237
 238 /* DVB USB Driver stuff */
 239 static struct dvb_usb_device_properties ce6230_props = {
 240         .driver_name = KBUILD_MODNAME,
 241         .owner = THIS_MODULE,
 242         .adapter_nr = adapter_nr,
 243         .bInterfaceNumber = 1,
 244
 245         .i2c_algo = &ce6230_i2c_algorithm,
 246         .power_ctrl = ce6230_power_ctrl,
 247         .frontend_attach = ce6230_zl10353_frontend_attach,
 248         .tuner_attach = ce6230_mxl5003s_tuner_attach,
 249
 250         .num_adapters = 1,
 251         .adapter = {
 252                 {
 253                         .stream = {
 254                                 .type = USB_BULK,
 255                                 .count = 6,
 256                                 .endpoint = 0x82,
 257                                 .u = {
 258                                         .bulk = {
 259                                                 .buffersize = (16 * 512),
 260                                         }
 261                                 }
 262                         },
 263                 }
 264         },
 265 };
 266
 267 static const struct usb_device_id ce6230_id_table[] = {
 268         { DVB_USB_DEVICE(USB_VID_INTEL, USB_PID_INTEL_CE9500,
 269                 &ce6230_props, "Intel CE9500 reference design", NULL) },
 270         { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A310,
 271                 &ce6230_props, "AVerMedia A310 USB 2.0 DVB-T tuner", NULL) },
 272         { }
 273 };
 274 MODULE_DEVICE_TABLE(usb, ce6230_id_table);
 275
 276 static struct usb_driver ce6230_usb_driver = {
 277         .name = KBUILD_MODNAME,
 278         .id_table = ce6230_id_table,
 279         .probe = dvb_usbv2_probe,
 280         .disconnect = dvb_usbv2_disconnect,
 281         .suspend = dvb_usbv2_suspend,
 282         .resume = dvb_usbv2_resume,
 283         .reset_resume = dvb_usbv2_reset_resume,
 284         .no_dynamic_id = 1,
 285         .soft_unbind = 1,
 286 };
 287
 288 module_usb_driver(ce6230_usb_driver);
 289
 290 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 291 MODULE_DESCRIPTION("Intel CE6230 driver");
 292 MODULE_LICENSE("GPL");