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                                 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
 144 static u32 ce6230_i2c_functionality(struct i2c_adapter *adapter)
 145 {
 146         return I2C_FUNC_I2C;
 147 }
 148
 149 static 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 */
 155 static 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
 165 static 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
 179 static 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
 196 static 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
 208 static 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 */
 225 static 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
 253 static 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 };
 260 MODULE_DEVICE_TABLE(usb, ce6230_id_table);
 261
 262 static 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
 274 module_usb_driver(ce6230_usb_driver);
 275
 276 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
 277 MODULE_DESCRIPTION("Intel CE6230 driver");
 278 MODULE_LICENSE("GPL");