linux_dsm_epyc7002/drivers/media/usb/dvb-usb-v2/zd1301.c
Thomas Gleixner c942fddf87 treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
Based on 3 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version this program is distributed in the
  hope that it will be useful but without any warranty without even
  the implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [kishon] [vijay] [abraham]
  [i] [kishon]@[ti] [com] this program is distributed in the hope that
  it will be useful but without any warranty without even the implied
  warranty of merchantability or fitness for a particular purpose see
  the gnu general public license for more details

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version [author] [graeme] [gregory]
  [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
  [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
  [hk] [hemahk]@[ti] [com] this program is distributed in the hope
  that it will be useful but without any warranty without even the
  implied warranty of merchantability or fitness for a particular
  purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Reviewed-by: Richard Fontana <rfontana@redhat.com>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30 11:26:37 -07:00

290 lines
6.9 KiB
C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
* ZyDAS ZD1301 driver (USB interface)
*
* Copyright (C) 2015 Antti Palosaari <crope@iki.fi>
*/
#include "dvb_usb.h"
#include "zd1301_demod.h"
#include "mt2060.h"
#include <linux/i2c.h>
#include <linux/platform_device.h>
DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
struct zd1301_dev {
#define BUF_LEN 8
u8 buf[BUF_LEN]; /* bulk USB control message */
struct zd1301_demod_platform_data demod_pdata;
struct mt2060_platform_data mt2060_pdata;
struct platform_device *platform_device_demod;
struct i2c_client *i2c_client_tuner;
};
static int zd1301_ctrl_msg(struct dvb_usb_device *d, const u8 *wbuf,
unsigned int wlen, u8 *rbuf, unsigned int rlen)
{
struct zd1301_dev *dev = d_to_priv(d);
struct usb_interface *intf = d->intf;
int ret, actual_length;
mutex_lock(&d->usb_mutex);
memcpy(&dev->buf, wbuf, wlen);
dev_dbg(&intf->dev, ">>> %*ph\n", wlen, dev->buf);
ret = usb_bulk_msg(d->udev, usb_sndbulkpipe(d->udev, 0x04), dev->buf,
wlen, &actual_length, 1000);
if (ret) {
dev_err(&intf->dev, "1st usb_bulk_msg() failed %d\n", ret);
goto err_mutex_unlock;
}
if (rlen) {
ret = usb_bulk_msg(d->udev, usb_rcvbulkpipe(d->udev, 0x83),
dev->buf, rlen, &actual_length, 1000);
if (ret) {
dev_err(&intf->dev,
"2nd usb_bulk_msg() failed %d\n", ret);
goto err_mutex_unlock;
}
dev_dbg(&intf->dev, "<<< %*ph\n", actual_length, dev->buf);
if (actual_length != rlen) {
/*
* Chip replies often with 3 byte len stub. On that case
* we have to query new reply.
*/
dev_dbg(&intf->dev, "repeating reply message\n");
ret = usb_bulk_msg(d->udev,
usb_rcvbulkpipe(d->udev, 0x83),
dev->buf, rlen, &actual_length,
1000);
if (ret) {
dev_err(&intf->dev,
"3rd usb_bulk_msg() failed %d\n", ret);
goto err_mutex_unlock;
}
dev_dbg(&intf->dev,
"<<< %*ph\n", actual_length, dev->buf);
}
memcpy(rbuf, dev->buf, rlen);
}
err_mutex_unlock:
mutex_unlock(&d->usb_mutex);
return ret;
}
static int zd1301_demod_wreg(void *reg_priv, u16 reg, u8 val)
{
struct dvb_usb_device *d = reg_priv;
struct usb_interface *intf = d->intf;
int ret;
u8 buf[7] = {0x07, 0x00, 0x03, 0x01,
(reg >> 0) & 0xff, (reg >> 8) & 0xff, val};
ret = zd1301_ctrl_msg(d, buf, 7, NULL, 0);
if (ret)
goto err;
return 0;
err:
dev_dbg(&intf->dev, "failed=%d\n", ret);
return ret;
}
static int zd1301_demod_rreg(void *reg_priv, u16 reg, u8 *val)
{
struct dvb_usb_device *d = reg_priv;
struct usb_interface *intf = d->intf;
int ret;
u8 buf[7] = {0x07, 0x00, 0x04, 0x01,
(reg >> 0) & 0xff, (reg >> 8) & 0xff, 0};
ret = zd1301_ctrl_msg(d, buf, 7, buf, 7);
if (ret)
goto err;
*val = buf[6];
return 0;
err:
dev_dbg(&intf->dev, "failed=%d\n", ret);
return ret;
}
static int zd1301_frontend_attach(struct dvb_usb_adapter *adap)
{
struct dvb_usb_device *d = adap_to_d(adap);
struct zd1301_dev *dev = adap_to_priv(adap);
struct usb_interface *intf = d->intf;
struct platform_device *pdev;
struct i2c_client *client;
struct i2c_board_info board_info;
struct i2c_adapter *adapter;
struct dvb_frontend *frontend;
int ret;
dev_dbg(&intf->dev, "\n");
/* Add platform demod */
dev->demod_pdata.reg_priv = d;
dev->demod_pdata.reg_read = zd1301_demod_rreg;
dev->demod_pdata.reg_write = zd1301_demod_wreg;
request_module("%s", "zd1301_demod");
pdev = platform_device_register_data(&intf->dev,
"zd1301_demod",
PLATFORM_DEVID_AUTO,
&dev->demod_pdata,
sizeof(dev->demod_pdata));
if (IS_ERR(pdev)) {
ret = PTR_ERR(pdev);
goto err;
}
if (!pdev->dev.driver) {
ret = -ENODEV;
goto err;
}
if (!try_module_get(pdev->dev.driver->owner)) {
ret = -ENODEV;
goto err_platform_device_unregister;
}
adapter = zd1301_demod_get_i2c_adapter(pdev);
frontend = zd1301_demod_get_dvb_frontend(pdev);
if (!adapter || !frontend) {
ret = -ENODEV;
goto err_module_put_demod;
}
/* Add I2C tuner */
dev->mt2060_pdata.i2c_write_max = 9;
dev->mt2060_pdata.dvb_frontend = frontend;
memset(&board_info, 0, sizeof(board_info));
strscpy(board_info.type, "mt2060", I2C_NAME_SIZE);
board_info.addr = 0x60;
board_info.platform_data = &dev->mt2060_pdata;
request_module("%s", "mt2060");
client = i2c_new_device(adapter, &board_info);
if (!client || !client->dev.driver) {
ret = -ENODEV;
goto err_module_put_demod;
}
if (!try_module_get(client->dev.driver->owner)) {
ret = -ENODEV;
goto err_i2c_unregister_device;
}
dev->platform_device_demod = pdev;
dev->i2c_client_tuner = client;
adap->fe[0] = frontend;
return 0;
err_i2c_unregister_device:
i2c_unregister_device(client);
err_module_put_demod:
module_put(pdev->dev.driver->owner);
err_platform_device_unregister:
platform_device_unregister(pdev);
err:
dev_dbg(&intf->dev, "failed=%d\n", ret);
return ret;
}
static int zd1301_frontend_detach(struct dvb_usb_adapter *adap)
{
struct dvb_usb_device *d = adap_to_d(adap);
struct zd1301_dev *dev = d_to_priv(d);
struct usb_interface *intf = d->intf;
struct platform_device *pdev;
struct i2c_client *client;
dev_dbg(&intf->dev, "\n");
client = dev->i2c_client_tuner;
pdev = dev->platform_device_demod;
/* Remove I2C tuner */
if (client) {
module_put(client->dev.driver->owner);
i2c_unregister_device(client);
}
/* Remove platform demod */
if (pdev) {
module_put(pdev->dev.driver->owner);
platform_device_unregister(pdev);
}
return 0;
}
static int zd1301_streaming_ctrl(struct dvb_frontend *fe, int onoff)
{
struct dvb_usb_device *d = fe_to_d(fe);
struct usb_interface *intf = d->intf;
int ret;
u8 buf[3] = {0x03, 0x00, onoff ? 0x07 : 0x08};
dev_dbg(&intf->dev, "onoff=%d\n", onoff);
ret = zd1301_ctrl_msg(d, buf, 3, NULL, 0);
if (ret)
goto err;
return 0;
err:
dev_dbg(&intf->dev, "failed=%d\n", ret);
return ret;
}
static const struct dvb_usb_device_properties zd1301_props = {
.driver_name = KBUILD_MODNAME,
.owner = THIS_MODULE,
.adapter_nr = adapter_nr,
.size_of_priv = sizeof(struct zd1301_dev),
.frontend_attach = zd1301_frontend_attach,
.frontend_detach = zd1301_frontend_detach,
.streaming_ctrl = zd1301_streaming_ctrl,
.num_adapters = 1,
.adapter = {
{
.stream = DVB_USB_STREAM_BULK(0x81, 6, 21 * 188),
},
},
};
static const struct usb_device_id zd1301_id_table[] = {
{DVB_USB_DEVICE(USB_VID_ZYDAS, 0x13a1, &zd1301_props,
"ZyDAS ZD1301 reference design", NULL)},
{}
};
MODULE_DEVICE_TABLE(usb, zd1301_id_table);
/* Usb specific object needed to register this driver with the usb subsystem */
static struct usb_driver zd1301_usb_driver = {
.name = KBUILD_MODNAME,
.id_table = zd1301_id_table,
.probe = dvb_usbv2_probe,
.disconnect = dvb_usbv2_disconnect,
.suspend = dvb_usbv2_suspend,
.resume = dvb_usbv2_resume,
.reset_resume = dvb_usbv2_reset_resume,
.no_dynamic_id = 1,
.soft_unbind = 1,
};
module_usb_driver(zd1301_usb_driver);
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("ZyDAS ZD1301 driver");
MODULE_LICENSE("GPL");