linux/drivers/media/usb/dvb-usb-v2/ce6230.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Intel CE6230 DVB USB driver
   4 *
   5 * Copyright (C) 2009 Antti Palosaari <crope@iki.fi>
   6 */
   7
   8#include "ce6230.h"
   9
  10DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  11
  12static int ce6230_ctrl_msg(struct dvb_usb_device *d, struct usb_req *req)
  13{
  14        int ret;
  15        unsigned int pipe;
  16        u8 request;
  17        u8 requesttype;
  18        u16 value;
  19        u16 index;
  20        u8 *buf;
  21
  22        request = req->cmd;
  23        value = req->value;
  24        index = req->index;
  25
  26        switch (req->cmd) {
  27        case I2C_READ:
  28        case DEMOD_READ:
  29        case REG_READ:
  30                requesttype = (USB_TYPE_VENDOR | USB_DIR_IN);
  31                break;
  32        case I2C_WRITE:
  33        case DEMOD_WRITE:
  34        case REG_WRITE:
  35                requesttype = (USB_TYPE_VENDOR | USB_DIR_OUT);
  36                break;
  37        default:
  38                dev_err(&d->udev->dev, "%s: unknown command=%02x\n",
  39                                KBUILD_MODNAME, req->cmd);
  40                ret = -EINVAL;
  41                goto error;
  42        }
  43
  44        buf = kmalloc(req->data_len, GFP_KERNEL);
  45        if (!buf) {
  46                ret = -ENOMEM;
  47                goto error;
  48        }
  49
  50        if (requesttype == (USB_TYPE_VENDOR | USB_DIR_OUT)) {
  51                /* write */
  52                memcpy(buf, req->data, req->data_len);
  53                pipe = usb_sndctrlpipe(d->udev, 0);
  54        } else {
  55                /* read */
  56                pipe = usb_rcvctrlpipe(d->udev, 0);
  57        }
  58
  59        msleep(1); /* avoid I2C errors */
  60
  61        ret = usb_control_msg(d->udev, pipe, request, requesttype, value, index,
  62                        buf, req->data_len, CE6230_USB_TIMEOUT);
  63
  64        dvb_usb_dbg_usb_control_msg(d->udev, request, requesttype, value, index,
  65                        buf, req->data_len);
  66
  67        if (ret < 0)
  68                dev_err(&d->udev->dev, "%s: usb_control_msg() failed=%d\n",
  69                                KBUILD_MODNAME, ret);
  70        else
  71                ret = 0;
  72
  73        /* read request, copy returned data to return buf */
  74        if (!ret && requesttype == (USB_TYPE_VENDOR | USB_DIR_IN))
  75                memcpy(req->data, buf, req->data_len);
  76
  77        kfree(buf);
  78error:
  79        return ret;
  80}
  81
  82/* I2C */
  83static struct zl10353_config ce6230_zl10353_config;
  84
  85static int ce6230_i2c_master_xfer(struct i2c_adapter *adap,
  86                struct i2c_msg msg[], int num)
  87{
  88        struct dvb_usb_device *d = i2c_get_adapdata(adap);
  89        int ret = 0, i = 0;
  90        struct usb_req req;
  91
  92        if (num > 2)
  93                return -EOPNOTSUPP;
  94
  95        memset(&req, 0, sizeof(req));
  96
  97        if (mutex_lock_interruptible(&d->i2c_mutex) < 0)
  98                return -EAGAIN;
  99
 100        while (i < num) {
 101                if (num > i + 1 && (msg[i+1].flags & I2C_M_RD)) {
 102                        if (msg[i].addr ==
 103                                ce6230_zl10353_config.demod_address) {
 104                                req.cmd = DEMOD_READ;
 105                                req.value = msg[i].addr >> 1;
 106                                req.index = msg[i].buf[0];
 107                                req.data_len = msg[i+1].len;
 108                                req.data = &msg[i+1].buf[0];
 109                                ret = ce6230_ctrl_msg(d, &req);
 110                        } else {
 111                                dev_err(&d->udev->dev, "%s: I2C read not " \
 112                                                "implemented\n",
 113                                                KBUILD_MODNAME);
 114                                ret = -EOPNOTSUPP;
 115                        }
 116                        i += 2;
 117                } else {
 118                        if (msg[i].addr ==
 119                                ce6230_zl10353_config.demod_address) {
 120                                req.cmd = DEMOD_WRITE;
 121                                req.value = msg[i].addr >> 1;
 122                                req.index = msg[i].buf[0];
 123                                req.data_len = msg[i].len-1;
 124                                req.data = &msg[i].buf[1];
 125                                ret = ce6230_ctrl_msg(d, &req);
 126                        } else {
 127                                req.cmd = I2C_WRITE;
 128                                req.value = 0x2000 + (msg[i].addr >> 1);
 129                                req.index = 0x0000;
 130                                req.data_len = msg[i].len;
 131                                req.data = &msg[i].buf[0];
 132                                ret = ce6230_ctrl_msg(d, &req);
 133                        }
 134                        i += 1;
 135                }
 136                if (ret)
 137                        break;
 138        }
 139
 140        mutex_unlock(&d->i2c_mutex);
 141        return ret ? ret : i;
 142}
 143
 144static u32 ce6230_i2c_functionality(struct i2c_adapter *adapter)
 145{
 146        return I2C_FUNC_I2C;
 147}
 148
 149static struct i2c_algorithm ce6230_i2c_algorithm = {
 150        .master_xfer   = ce6230_i2c_master_xfer,
 151        .functionality = ce6230_i2c_functionality,
 152};
 153
 154/* Callbacks for DVB USB */
 155static struct zl10353_config ce6230_zl10353_config = {
 156        .demod_address = 0x1e,
 157        .adc_clock = 450000,
 158        .if2 = 45700,
 159        .no_tuner = 1,
 160        .parallel_ts = 1,
 161        .clock_ctl_1 = 0x34,
 162        .pll_0 = 0x0e,
 163};
 164
 165static int ce6230_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
 166{
 167        struct dvb_usb_device *d = adap_to_d(adap);
 168
 169        dev_dbg(&d->udev->dev, "%s:\n", __func__);
 170
 171        adap->fe[0] = dvb_attach(zl10353_attach, &ce6230_zl10353_config,
 172                        &d->i2c_adap);
 173        if (adap->fe[0] == NULL)
 174                return -ENODEV;
 175
 176        return 0;
 177}
 178
 179static struct mxl5005s_config ce6230_mxl5003s_config = {
 180        .i2c_address     = 0xc6,
 181        .if_freq         = IF_FREQ_4570000HZ,
 182        .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
 183        .agc_mode        = MXL_SINGLE_AGC,
 184        .tracking_filter = MXL_TF_DEFAULT,
 185        .rssi_enable     = MXL_RSSI_ENABLE,
 186        .cap_select      = MXL_CAP_SEL_ENABLE,
 187        .div_out         = MXL_DIV_OUT_4,
 188        .clock_out       = MXL_CLOCK_OUT_DISABLE,
 189        .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
 190        .top             = MXL5005S_TOP_25P2,
 191        .mod_mode        = MXL_DIGITAL_MODE,
 192        .if_mode         = MXL_ZERO_IF,
 193        .AgcMasterByte   = 0x00,
 194};
 195
 196static int ce6230_mxl5003s_tuner_attach(struct dvb_usb_adapter *adap)
 197{
 198        struct dvb_usb_device *d = adap_to_d(adap);
 199        int ret;
 200
 201        dev_dbg(&d->udev->dev, "%s:\n", __func__);
 202
 203        ret = dvb_attach(mxl5005s_attach, adap->fe[0], &d->i2c_adap,
 204                        &ce6230_mxl5003s_config) == NULL ? -ENODEV : 0;
 205        return ret;
 206}
 207
 208static int ce6230_power_ctrl(struct dvb_usb_device *d, int onoff)
 209{
 210        int ret;
 211
 212        dev_dbg(&d->udev->dev, "%s: onoff=%d\n", __func__, onoff);
 213
 214        /* InterfaceNumber 1 / AlternateSetting 0     idle
 215           InterfaceNumber 1 / AlternateSetting 1     streaming */
 216        ret = usb_set_interface(d->udev, 1, onoff);
 217        if (ret)
 218                dev_err(&d->udev->dev, "%s: usb_set_interface() failed=%d\n",
 219                                KBUILD_MODNAME, ret);
 220
 221        return ret;
 222}
 223
 224/* DVB USB Driver stuff */
 225static struct dvb_usb_device_properties ce6230_props = {
 226        .driver_name = KBUILD_MODNAME,
 227        .owner = THIS_MODULE,
 228        .adapter_nr = adapter_nr,
 229        .bInterfaceNumber = 1,
 230
 231        .i2c_algo = &ce6230_i2c_algorithm,
 232        .power_ctrl = ce6230_power_ctrl,
 233        .frontend_attach = ce6230_zl10353_frontend_attach,
 234        .tuner_attach = ce6230_mxl5003s_tuner_attach,
 235
 236        .num_adapters = 1,
 237        .adapter = {
 238                {
 239                        .stream = {
 240                                .type = USB_BULK,
 241                                .count = 6,
 242                                .endpoint = 0x82,
 243                                .u = {
 244                                        .bulk = {
 245                                                .buffersize = (16 * 512),
 246                                        }
 247                                }
 248                        },
 249                }
 250        },
 251};
 252
 253static const struct usb_device_id ce6230_id_table[] = {
 254        { DVB_USB_DEVICE(USB_VID_INTEL, USB_PID_INTEL_CE9500,
 255                &ce6230_props, "Intel CE9500 reference design", NULL) },
 256        { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A310,
 257                &ce6230_props, "AVerMedia A310 USB 2.0 DVB-T tuner", NULL) },
 258        { }
 259};
 260MODULE_DEVICE_TABLE(usb, ce6230_id_table);
 261
 262static struct usb_driver ce6230_usb_driver = {
 263        .name = KBUILD_MODNAME,
 264        .id_table = ce6230_id_table,
 265        .probe = dvb_usbv2_probe,
 266        .disconnect = dvb_usbv2_disconnect,
 267        .suspend = dvb_usbv2_suspend,
 268        .resume = dvb_usbv2_resume,
 269        .reset_resume = dvb_usbv2_reset_resume,
 270        .no_dynamic_id = 1,
 271        .soft_unbind = 1,
 272};
 273
 274module_usb_driver(ce6230_usb_driver);
 275
 276MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 277MODULE_DESCRIPTION("Intel CE6230 driver");
 278MODULE_LICENSE("GPL");
 279