diff options
Diffstat (limited to 'drivers/media/usb/dvb-usb/dtv5100.c')
| -rw-r--r-- | drivers/media/usb/dvb-usb/dtv5100.c | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/drivers/media/usb/dvb-usb/dtv5100.c b/drivers/media/usb/dvb-usb/dtv5100.c new file mode 100644 index 000000000..56c9d521a --- /dev/null +++ b/drivers/media/usb/dvb-usb/dtv5100.c @@ -0,0 +1,225 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * DVB USB Linux driver for AME DTV-5100 USB2.0 DVB-T + * + * Copyright (C) 2008 Antoine Jacquet <royale@zerezo.com> + * http://royale.zerezo.com/dtv5100/ + * + * Inspired by gl861.c and au6610.c drivers + */ + +#include "dtv5100.h" +#include "zl10353.h" +#include "qt1010.h" + +/* debug */ +static int dvb_usb_dtv5100_debug; +module_param_named(debug, dvb_usb_dtv5100_debug, int, 0644); +MODULE_PARM_DESC(debug, "set debugging level" DVB_USB_DEBUG_STATUS); +DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); + +struct dtv5100_state { + unsigned char data[80]; +}; + +static int dtv5100_i2c_msg(struct dvb_usb_device *d, u8 addr, + u8 *wbuf, u16 wlen, u8 *rbuf, u16 rlen) +{ + struct dtv5100_state *st = d->priv; + unsigned int pipe; + u8 request; + u8 type; + u16 value; + u16 index; + + switch (wlen) { + case 1: + /* write { reg }, read { value } */ + pipe = usb_rcvctrlpipe(d->udev, 0); + request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_READ : + DTV5100_TUNER_READ); + type = USB_TYPE_VENDOR | USB_DIR_IN; + value = 0; + break; + case 2: + /* write { reg, value } */ + pipe = usb_sndctrlpipe(d->udev, 0); + request = (addr == DTV5100_DEMOD_ADDR ? DTV5100_DEMOD_WRITE : + DTV5100_TUNER_WRITE); + type = USB_TYPE_VENDOR | USB_DIR_OUT; + value = wbuf[1]; + break; + default: + warn("wlen = %x, aborting.", wlen); + return -EINVAL; + } + index = (addr << 8) + wbuf[0]; + + memcpy(st->data, rbuf, rlen); + msleep(1); /* avoid I2C errors */ + return usb_control_msg(d->udev, pipe, request, + type, value, index, st->data, rlen, + DTV5100_USB_TIMEOUT); +} + +/* I2C */ +static int dtv5100_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msg[], + int num) +{ + struct dvb_usb_device *d = i2c_get_adapdata(adap); + int i; + + if (num > 2) + return -EINVAL; + + if (mutex_lock_interruptible(&d->i2c_mutex) < 0) + return -EAGAIN; + + for (i = 0; i < num; i++) { + /* write/read request */ + if (i+1 < num && (msg[i+1].flags & I2C_M_RD)) { + if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf, + msg[i].len, msg[i+1].buf, + msg[i+1].len) < 0) + break; + i++; + } else if (dtv5100_i2c_msg(d, msg[i].addr, msg[i].buf, + msg[i].len, NULL, 0) < 0) + break; + } + + mutex_unlock(&d->i2c_mutex); + return i; +} + +static u32 dtv5100_i2c_func(struct i2c_adapter *adapter) +{ + return I2C_FUNC_I2C; +} + +static struct i2c_algorithm dtv5100_i2c_algo = { + .master_xfer = dtv5100_i2c_xfer, + .functionality = dtv5100_i2c_func, +}; + +/* Callbacks for DVB USB */ +static struct zl10353_config dtv5100_zl10353_config = { + .demod_address = DTV5100_DEMOD_ADDR, + .no_tuner = 1, + .parallel_ts = 1, +}; + +static int dtv5100_frontend_attach(struct dvb_usb_adapter *adap) +{ + adap->fe_adap[0].fe = dvb_attach(zl10353_attach, &dtv5100_zl10353_config, + &adap->dev->i2c_adap); + if (adap->fe_adap[0].fe == NULL) + return -EIO; + + /* disable i2c gate, or it won't work... is this safe? */ + adap->fe_adap[0].fe->ops.i2c_gate_ctrl = NULL; + + return 0; +} + +static struct qt1010_config dtv5100_qt1010_config = { + .i2c_address = DTV5100_TUNER_ADDR +}; + +static int dtv5100_tuner_attach(struct dvb_usb_adapter *adap) +{ + return dvb_attach(qt1010_attach, + adap->fe_adap[0].fe, &adap->dev->i2c_adap, + &dtv5100_qt1010_config) == NULL ? -ENODEV : 0; +} + +/* DVB USB Driver stuff */ +static struct dvb_usb_device_properties dtv5100_properties; + +static int dtv5100_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + int i, ret; + struct usb_device *udev = interface_to_usbdev(intf); + + /* initialize non qt1010/zl10353 part? */ + for (i = 0; dtv5100_init[i].request; i++) { + ret = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), + dtv5100_init[i].request, + USB_TYPE_VENDOR | USB_DIR_OUT, + dtv5100_init[i].value, + dtv5100_init[i].index, NULL, 0, + DTV5100_USB_TIMEOUT); + if (ret) + return ret; + } + + ret = dvb_usb_device_init(intf, &dtv5100_properties, + THIS_MODULE, NULL, adapter_nr); + if (ret) + return ret; + + return 0; +} + +enum { + AME_DTV5100, +}; + +static struct usb_device_id dtv5100_table[] = { + DVB_USB_DEV(AME, AME_DTV5100), + { } +}; + +MODULE_DEVICE_TABLE(usb, dtv5100_table); + +static struct dvb_usb_device_properties dtv5100_properties = { + .caps = DVB_USB_IS_AN_I2C_ADAPTER, + .usb_ctrl = DEVICE_SPECIFIC, + + .size_of_priv = sizeof(struct dtv5100_state), + + .num_adapters = 1, + .adapter = {{ + .num_frontends = 1, + .fe = {{ + .frontend_attach = dtv5100_frontend_attach, + .tuner_attach = dtv5100_tuner_attach, + + .stream = { + .type = USB_BULK, + .count = 8, + .endpoint = 0x82, + .u = { + .bulk = { + .buffersize = 4096, + } + } + }, + }}, + } }, + + .i2c_algo = &dtv5100_i2c_algo, + + .num_device_descs = 1, + .devices = { + { + .name = "AME DTV-5100 USB2.0 DVB-T", + .cold_ids = { NULL }, + .warm_ids = { &dtv5100_table[AME_DTV5100], NULL }, + }, + } +}; + +static struct usb_driver dtv5100_driver = { + .name = "dvb_usb_dtv5100", + .probe = dtv5100_probe, + .disconnect = dvb_usb_device_exit, + .id_table = dtv5100_table, +}; + +module_usb_driver(dtv5100_driver); + +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_LICENSE("GPL"); |