linux/drivers/media/usb/dvb-usb-v2/ce6230.c
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   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
  24DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  25
  26static 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);
  92error:
  93        return ret;
  94}
  95
  96/* I2C */
  97static struct zl10353_config ce6230_zl10353_config;
  98
  99static 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
 158static u32 ce6230_i2c_functionality(struct i2c_adapter *adapter)
 159{
 160        return I2C_FUNC_I2C;
 161}
 162
 163static 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 */
 169static 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
 179static 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
 193static 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
 210static 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
 222static 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 */
 239static 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
 267static 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};
 274MODULE_DEVICE_TABLE(usb, ce6230_id_table);
 275
 276static 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
 288module_usb_driver(ce6230_usb_driver);
 289
 290MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 291MODULE_DESCRIPTION("Intel CE6230 driver");
 292MODULE_LICENSE("GPL");
 293