2 * ZyDAS ZD1301 driver (USB interface)
4 * Copyright (C) 2015 Antti Palosaari <crope@iki.fi>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
18 #include "zd1301_demod.h"
20 #include <linux/i2c.h>
21 #include <linux/platform_device.h>
23 DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
27 u8 buf[BUF_LEN]; /* bulk USB control message */
28 struct zd1301_demod_platform_data demod_pdata;
29 struct mt2060_platform_data mt2060_pdata;
30 struct platform_device *platform_device_demod;
31 struct i2c_client *i2c_client_tuner;
34 static int zd1301_ctrl_msg(struct dvb_usb_device *d, const u8 *wbuf,
35 unsigned int wlen, u8 *rbuf, unsigned int rlen)
37 struct zd1301_dev *dev = d_to_priv(d);
38 struct usb_interface *intf = d->intf;
39 int ret, actual_length;
41 mutex_lock(&d->usb_mutex);
43 memcpy(&dev->buf, wbuf, wlen);
45 dev_dbg(&intf->dev, ">>> %*ph\n", wlen, dev->buf);
47 ret = usb_bulk_msg(d->udev, usb_sndbulkpipe(d->udev, 0x04), dev->buf,
48 wlen, &actual_length, 1000);
50 dev_err(&intf->dev, "1st usb_bulk_msg() failed %d\n", ret);
51 goto err_mutex_unlock;
55 ret = usb_bulk_msg(d->udev, usb_rcvbulkpipe(d->udev, 0x83),
56 dev->buf, rlen, &actual_length, 1000);
59 "2nd usb_bulk_msg() failed %d\n", ret);
60 goto err_mutex_unlock;
63 dev_dbg(&intf->dev, "<<< %*ph\n", actual_length, dev->buf);
65 if (actual_length != rlen) {
67 * Chip replies often with 3 byte len stub. On that case
68 * we have to query new reply.
70 dev_dbg(&intf->dev, "repeating reply message\n");
72 ret = usb_bulk_msg(d->udev,
73 usb_rcvbulkpipe(d->udev, 0x83),
74 dev->buf, rlen, &actual_length,
78 "3rd usb_bulk_msg() failed %d\n", ret);
79 goto err_mutex_unlock;
83 "<<< %*ph\n", actual_length, dev->buf);
86 memcpy(rbuf, dev->buf, rlen);
90 mutex_unlock(&d->usb_mutex);
94 static int zd1301_demod_wreg(void *reg_priv, u16 reg, u8 val)
96 struct dvb_usb_device *d = reg_priv;
97 struct usb_interface *intf = d->intf;
99 u8 buf[7] = {0x07, 0x00, 0x03, 0x01,
100 (reg >> 0) & 0xff, (reg >> 8) & 0xff, val};
102 ret = zd1301_ctrl_msg(d, buf, 7, NULL, 0);
108 dev_dbg(&intf->dev, "failed=%d\n", ret);
112 static int zd1301_demod_rreg(void *reg_priv, u16 reg, u8 *val)
114 struct dvb_usb_device *d = reg_priv;
115 struct usb_interface *intf = d->intf;
117 u8 buf[7] = {0x07, 0x00, 0x04, 0x01,
118 (reg >> 0) & 0xff, (reg >> 8) & 0xff, 0};
120 ret = zd1301_ctrl_msg(d, buf, 7, buf, 7);
128 dev_dbg(&intf->dev, "failed=%d\n", ret);
132 static int zd1301_frontend_attach(struct dvb_usb_adapter *adap)
134 struct dvb_usb_device *d = adap_to_d(adap);
135 struct zd1301_dev *dev = adap_to_priv(adap);
136 struct usb_interface *intf = d->intf;
137 struct platform_device *pdev;
138 struct i2c_client *client;
139 struct i2c_board_info board_info;
140 struct i2c_adapter *adapter;
141 struct dvb_frontend *frontend;
144 dev_dbg(&intf->dev, "\n");
146 /* Add platform demod */
147 dev->demod_pdata.reg_priv = d;
148 dev->demod_pdata.reg_read = zd1301_demod_rreg;
149 dev->demod_pdata.reg_write = zd1301_demod_wreg;
150 request_module("%s", "zd1301_demod");
151 pdev = platform_device_register_data(&intf->dev,
155 sizeof(dev->demod_pdata));
160 if (!pdev->dev.driver) {
164 if (!try_module_get(pdev->dev.driver->owner)) {
166 goto err_platform_device_unregister;
169 adapter = zd1301_demod_get_i2c_adapter(pdev);
170 frontend = zd1301_demod_get_dvb_frontend(pdev);
171 if (!adapter || !frontend) {
173 goto err_module_put_demod;
177 dev->mt2060_pdata.i2c_write_max = 9;
178 dev->mt2060_pdata.dvb_frontend = frontend;
179 memset(&board_info, 0, sizeof(board_info));
180 strlcpy(board_info.type, "mt2060", I2C_NAME_SIZE);
181 board_info.addr = 0x60;
182 board_info.platform_data = &dev->mt2060_pdata;
183 request_module("%s", "mt2060");
184 client = i2c_new_device(adapter, &board_info);
185 if (!client || !client->dev.driver) {
187 goto err_module_put_demod;
189 if (!try_module_get(client->dev.driver->owner)) {
191 goto err_i2c_unregister_device;
194 dev->platform_device_demod = pdev;
195 dev->i2c_client_tuner = client;
196 adap->fe[0] = frontend;
199 err_i2c_unregister_device:
200 i2c_unregister_device(client);
201 err_module_put_demod:
202 module_put(pdev->dev.driver->owner);
203 err_platform_device_unregister:
204 platform_device_unregister(pdev);
206 dev_dbg(&intf->dev, "failed=%d\n", ret);
210 static int zd1301_frontend_detach(struct dvb_usb_adapter *adap)
212 struct dvb_usb_device *d = adap_to_d(adap);
213 struct zd1301_dev *dev = d_to_priv(d);
214 struct usb_interface *intf = d->intf;
215 struct platform_device *pdev;
216 struct i2c_client *client;
218 dev_dbg(&intf->dev, "\n");
220 client = dev->i2c_client_tuner;
221 pdev = dev->platform_device_demod;
223 /* Remove I2C tuner */
225 module_put(client->dev.driver->owner);
226 i2c_unregister_device(client);
229 /* Remove platform demod */
231 module_put(pdev->dev.driver->owner);
232 platform_device_unregister(pdev);
238 static int zd1301_streaming_ctrl(struct dvb_frontend *fe, int onoff)
240 struct dvb_usb_device *d = fe_to_d(fe);
241 struct usb_interface *intf = d->intf;
243 u8 buf[3] = {0x03, 0x00, onoff ? 0x07 : 0x08};
245 dev_dbg(&intf->dev, "onoff=%d\n", onoff);
247 ret = zd1301_ctrl_msg(d, buf, 3, NULL, 0);
253 dev_dbg(&intf->dev, "failed=%d\n", ret);
257 static const struct dvb_usb_device_properties zd1301_props = {
258 .driver_name = KBUILD_MODNAME,
259 .owner = THIS_MODULE,
260 .adapter_nr = adapter_nr,
261 .size_of_priv = sizeof(struct zd1301_dev),
263 .frontend_attach = zd1301_frontend_attach,
264 .frontend_detach = zd1301_frontend_detach,
265 .streaming_ctrl = zd1301_streaming_ctrl,
270 .stream = DVB_USB_STREAM_BULK(0x81, 6, 21 * 188),
275 static const struct usb_device_id zd1301_id_table[] = {
276 {DVB_USB_DEVICE(USB_VID_ZYDAS, 0x13a1, &zd1301_props,
277 "ZyDAS ZD1301 reference design", NULL)},
280 MODULE_DEVICE_TABLE(usb, zd1301_id_table);
282 /* Usb specific object needed to register this driver with the usb subsystem */
283 static struct usb_driver zd1301_usb_driver = {
284 .name = KBUILD_MODNAME,
285 .id_table = zd1301_id_table,
286 .probe = dvb_usbv2_probe,
287 .disconnect = dvb_usbv2_disconnect,
288 .suspend = dvb_usbv2_suspend,
289 .resume = dvb_usbv2_resume,
290 .reset_resume = dvb_usbv2_reset_resume,
294 module_usb_driver(zd1301_usb_driver);
296 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
297 MODULE_DESCRIPTION("ZyDAS ZD1301 driver");
298 MODULE_LICENSE("GPL");