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

   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
  10 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
  11
  12 static 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);
  78 error:
  79         return ret;
  80 }
  81
  82 /* I2C */
  83 static struct zl10353_config ce6230_zl10353_config;
  84
  85 static 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                                 if (msg[i].len < 1) {
 105                                         i = -EOPNOTSUPP;
 106                                         break;
 107                                 }
 108                                 req.cmd = DEMOD_READ;
 109                                 req.value = msg[i].addr >> 1;
 110                                 req.index = msg[i].buf[0];
 111                                 req.data_len = msg[i+1].len;
 112                                 req.data = &msg[i+1].buf[0];
 113                                 ret = ce6230_ctrl_msg(d, &req);
 114                         } else {
 115                                 dev_err(&d->udev->dev, "%s: I2C read not " \
 116                                                 "implemented\n",
 117                                                 KBUILD_MODNAME);
 118                                 ret = -EOPNOTSUPP;
 119                         }
 120                         i += 2;
 121                 } else {
 122                         if (msg[i].addr ==
 123                                 ce6230_zl10353_config.demod_address) {
 124                                 if (msg[i].len < 1) {
 125                                         i = -EOPNOTSUPP;
 126                                         break;
 127                                 }
 128                                 req.cmd = DEMOD_WRITE;
 129                                 req.value = msg[i].addr >> 1;
 130                                 req.index = msg[i].buf[0];
 131                                 req.data_len = msg[i].len-1;
 132                                 req.data = &msg[i].buf[1];
 133                                 ret = ce6230_ctrl_msg(d, &req);
 134                         } else {
 135                                 req.cmd = I2C_WRITE;
 136                                 req.value = 0x2000 + (msg[i].addr >> 1);
 137                                 req.index = 0x0000;
 138                                 req.data_len = msg[i].len;
 139                                 req.data = &msg[i].buf[0];
 140                                 ret = ce6230_ctrl_msg(d, &req);
 141                         }
 142                         i += 1;
 143                 }
 144                 if (ret)
 145                         break;
 146         }
 147
 148         mutex_unlock(&d->i2c_mutex);
 149         return ret ? ret : i;
 150 }
 151
 152 static u32 ce6230_i2c_functionality(struct i2c_adapter *adapter)
 153 {
 154         return I2C_FUNC_I2C;
 155 }
 156
 157 static struct i2c_algorithm ce6230_i2c_algorithm = {
 158         .master_xfer   = ce6230_i2c_master_xfer,
 159         .functionality = ce6230_i2c_functionality,
 160 };
 161
 162 /* Callbacks for DVB USB */
 163 static struct zl10353_config ce6230_zl10353_config = {
 164         .demod_address = 0x1e,
 165         .adc_clock = 450000,
 166         .if2 = 45700,
 167         .no_tuner = 1,
 168         .parallel_ts = 1,
 169         .clock_ctl_1 = 0x34,
 170         .pll_0 = 0x0e,
 171 };
 172
 173 static int ce6230_zl10353_frontend_attach(struct dvb_usb_adapter *adap)
 174 {
 175         struct dvb_usb_device *d = adap_to_d(adap);
 176
 177         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 178
 179         adap->fe[0] = dvb_attach(zl10353_attach, &ce6230_zl10353_config,
 180                         &d->i2c_adap);
 181         if (adap->fe[0] == NULL)
 182                 return -ENODEV;
 183
 184         return 0;
 185 }
 186
 187 static struct mxl5005s_config ce6230_mxl5003s_config = {
 188         .i2c_address     = 0xc6,
 189         .if_freq         = IF_FREQ_4570000HZ,
 190         .xtal_freq       = CRYSTAL_FREQ_16000000HZ,
 191         .agc_mode        = MXL_SINGLE_AGC,
 192         .tracking_filter = MXL_TF_DEFAULT,
 193         .rssi_enable     = MXL_RSSI_ENABLE,
 194         .cap_select      = MXL_CAP_SEL_ENABLE,
 195         .div_out         = MXL_DIV_OUT_4,
 196         .clock_out       = MXL_CLOCK_OUT_DISABLE,
 197         .output_load     = MXL5005S_IF_OUTPUT_LOAD_200_OHM,
 198         .top             = MXL5005S_TOP_25P2,
 199         .mod_mode        = MXL_DIGITAL_MODE,
 200         .if_mode         = MXL_ZERO_IF,
 201         .AgcMasterByte   = 0x00,
 202 };
 203
 204 static int ce6230_mxl5003s_tuner_attach(struct dvb_usb_adapter *adap)
 205 {
 206         struct dvb_usb_device *d = adap_to_d(adap);
 207         int ret;
 208
 209         dev_dbg(&d->udev->dev, "%s:\n", __func__);
 210
 211         ret = dvb_attach(mxl5005s_attach, adap->fe[0], &d->i2c_adap,
 212                         &ce6230_mxl5003s_config) == NULL ? -ENODEV : 0;
 213         return ret;
 214 }
 215
 216 static int ce6230_power_ctrl(struct dvb_usb_device *d, int onoff)
 217 {
 218         int ret;
 219
 220         dev_dbg(&d->udev->dev, "%s: onoff=%d\n", __func__, onoff);
 221
 222         /* InterfaceNumber 1 / AlternateSetting 0     idle
 223            InterfaceNumber 1 / AlternateSetting 1     streaming */
 224         ret = usb_set_interface(d->udev, 1, onoff);
 225         if (ret)
 226                 dev_err(&d->udev->dev, "%s: usb_set_interface() failed=%d\n",
 227                                 KBUILD_MODNAME, ret);
 228
 229         return ret;
 230 }
 231
 232 /* DVB USB Driver stuff */
 233 static struct dvb_usb_device_properties ce6230_props = {
 234         .driver_name = KBUILD_MODNAME,
 235         .owner = THIS_MODULE,
 236         .adapter_nr = adapter_nr,
 237         .bInterfaceNumber = 1,
 238
 239         .i2c_algo = &ce6230_i2c_algorithm,
 240         .power_ctrl = ce6230_power_ctrl,
 241         .frontend_attach = ce6230_zl10353_frontend_attach,
 242         .tuner_attach = ce6230_mxl5003s_tuner_attach,
 243
 244         .num_adapters = 1,
 245         .adapter = {
 246                 {
 247                         .stream = {
 248                                 .type = USB_BULK,
 249                                 .count = 6,
 250                                 .endpoint = 0x82,
 251                                 .u = {
 252                                         .bulk = {
 253                                                 .buffersize = (16 * 512),
 254                                         }
 255                                 }
 256                         },
 257                 }
 258         },
 259 };
 260
 261 static const struct usb_device_id ce6230_id_table[] = {
 262         { DVB_USB_DEVICE(USB_VID_INTEL, USB_PID_INTEL_CE9500,
 263                 &ce6230_props, "Intel CE9500 reference design", NULL) },
 264         { DVB_USB_DEVICE(USB_VID_AVERMEDIA, USB_PID_AVERMEDIA_A310,
 265                 &ce6230_props, "AVerMedia A310 USB 2.0 DVB-T tuner", NULL) },
 266         { }
 267 };
 268 MODULE_DEVICE_TABLE(usb, ce6230_id_table);
 269
 270 static struct usb_driver ce6230_usb_driver = {
 271         .name = KBUILD_MODNAME,
 272         .id_table = ce6230_id_table,
 273         .probe = dvb_usbv2_probe,
 274         .disconnect = dvb_usbv2_disconnect,
 275         .suspend = dvb_usbv2_suspend,
 276         .resume = dvb_usbv2_resume,
 277         .reset_resume = dvb_usbv2_reset_resume,
 278         .no_dynamic_id = 1,
 279         .soft_unbind = 1,
 280 };
 281
 282 module_usb_driver(ce6230_usb_driver);
 283
 284 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 285 MODULE_DESCRIPTION("Intel CE6230 driver");
 286 MODULE_LICENSE("GPL");