usb/dvb-usb/a800.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /* DVB USB framework compliant Linux driver for the AVerMedia AverTV DVB-T
0003  * USB2.0 (A800) DVB-T receiver.
0004  *
0005  * Copyright (C) 2005 Patrick Boettcher (patrick.boettcher@posteo.de)
0006  *
0007  * Thanks to
0008  *   - AVerMedia who kindly provided information and
0009  *   - Glen Harris who suffered from my mistakes during development.
0010  *
0011  * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information
0012  */
0013 #include "dibusb.h"
0014
0015 static int debug;
0016 module_param(debug, int, 0644);
0017 MODULE_PARM_DESC(debug, "set debugging level (rc=1 (or-able))." DVB_USB_DEBUG_STATUS);
0018
0019 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
0020
0021 #define deb_rc(args...)   dprintk(debug,0x01,args)
0022
0023 static int a800_power_ctrl(struct dvb_usb_device *d, int onoff)
0024 {
0025     /* do nothing for the AVerMedia */
0026     return 0;
0027 }
0028
0029 /* assure to put cold to 0 for iManufacturer == 1 */
0030 static int a800_identify_state(struct usb_device *udev,
0031                    const struct dvb_usb_device_properties *props,
0032                    const struct dvb_usb_device_description **desc,
0033                    int *cold)
0034 {
0035     *cold = udev->descriptor.iManufacturer != 1;
0036     return 0;
0037 }
0038
0039 static int a800_rc_query(struct dvb_usb_device *d)
0040 {
0041     int ret = 0;
0042     u8 *key = kmalloc(5, GFP_KERNEL);
0043     if (!key)
0044         return -ENOMEM;
0045
0046     if (usb_control_msg(d->udev,usb_rcvctrlpipe(d->udev,0),
0047                 0x04, USB_TYPE_VENDOR | USB_DIR_IN, 0, 0, key, 5,
0048                 2000) != 5) {
0049         ret = -ENODEV;
0050         goto out;
0051     }
0052
0053     /* Note that extended nec and nec32 are dropped */
0054     if (key[0] == 1)
0055         rc_keydown(d->rc_dev, RC_PROTO_NEC,
0056                RC_SCANCODE_NEC(key[1], key[3]), 0);
0057     else if (key[0] == 2)
0058         rc_repeat(d->rc_dev);
0059 out:
0060     kfree(key);
0061     return ret;
0062 }
0063
0064 /* USB Driver stuff */
0065 static struct dvb_usb_device_properties a800_properties;
0066
0067 static int a800_probe(struct usb_interface *intf,
0068         const struct usb_device_id *id)
0069 {
0070     return dvb_usb_device_init(intf, &a800_properties,
0071                    THIS_MODULE, NULL, adapter_nr);
0072 }
0073
0074 /* do not change the order of the ID table */
0075 enum {
0076     AVERMEDIA_DVBT_USB2_COLD,
0077     AVERMEDIA_DVBT_USB2_WARM,
0078 };
0079
0080 static struct usb_device_id a800_table[] = {
0081     DVB_USB_DEV(AVERMEDIA, AVERMEDIA_DVBT_USB2_COLD),
0082     DVB_USB_DEV(AVERMEDIA, AVERMEDIA_DVBT_USB2_WARM),
0083     { }
0084 };
0085
0086 MODULE_DEVICE_TABLE (usb, a800_table);
0087
0088 static struct dvb_usb_device_properties a800_properties = {
0089     .caps = DVB_USB_IS_AN_I2C_ADAPTER,
0090
0091     .usb_ctrl = CYPRESS_FX2,
0092     .firmware = "dvb-usb-avertv-a800-02.fw",
0093
0094     .num_adapters = 1,
0095     .adapter = {
0096         {
0097         .num_frontends = 1,
0098         .fe = {{
0099             .caps = DVB_USB_ADAP_HAS_PID_FILTER | DVB_USB_ADAP_PID_FILTER_CAN_BE_TURNED_OFF,
0100             .pid_filter_count = 32,
0101             .streaming_ctrl   = dibusb2_0_streaming_ctrl,
0102             .pid_filter       = dibusb_pid_filter,
0103             .pid_filter_ctrl  = dibusb_pid_filter_ctrl,
0104
0105             .frontend_attach  = dibusb_dib3000mc_frontend_attach,
0106             .tuner_attach     = dibusb_dib3000mc_tuner_attach,
0107
0108             /* parameter for the MPEG2-data transfer */
0109                     .stream = {
0110                         .type = USB_BULK,
0111                 .count = 7,
0112                 .endpoint = 0x06,
0113                 .u = {
0114                     .bulk = {
0115                         .buffersize = 4096,
0116                     }
0117                 }
0118             },
0119         }},
0120             .size_of_priv     = sizeof(struct dibusb_state),
0121         },
0122     },
0123
0124     .power_ctrl       = a800_power_ctrl,
0125     .identify_state   = a800_identify_state,
0126
0127     .rc.core = {
0128         .rc_interval    = DEFAULT_RC_INTERVAL,
0129         .rc_codes   = RC_MAP_AVERMEDIA_M135A,
0130         .module_name    = KBUILD_MODNAME,
0131         .rc_query   = a800_rc_query,
0132         .allowed_protos = RC_PROTO_BIT_NEC,
0133     },
0134
0135     .i2c_algo         = &dibusb_i2c_algo,
0136
0137     .generic_bulk_ctrl_endpoint = 0x01,
0138     .num_device_descs = 1,
0139     .devices = {
0140         {   "AVerMedia AverTV DVB-T USB 2.0 (A800)",
0141             { &a800_table[AVERMEDIA_DVBT_USB2_COLD], NULL },
0142             { &a800_table[AVERMEDIA_DVBT_USB2_WARM], NULL },
0143         },
0144     }
0145 };
0146
0147 static struct usb_driver a800_driver = {
0148     .name       = "dvb_usb_a800",
0149     .probe      = a800_probe,
0150     .disconnect = dvb_usb_device_exit,
0151     .id_table   = a800_table,
0152 };
0153
0154 module_usb_driver(a800_driver);
0155
0156 MODULE_AUTHOR("Patrick Boettcher <patrick.boettcher@posteo.de>");
0157 MODULE_DESCRIPTION("AVerMedia AverTV DVB-T USB 2.0 (A800)");
0158 MODULE_VERSION("1.0");
0159 MODULE_LICENSE("GPL");