// SPDX-License-Identifier: GPL-2.0-or-later
|
/*
|
* Abilis Systems Single DVB-T Receiver
|
* Copyright (C) 2008 Pierrick Hascoet <pierrick.hascoet@abilis.com>
|
* Copyright (C) 2010 Devin Heitmueller <dheitmueller@kernellabs.com>
|
*/
|
#include <linux/kernel.h>
|
#include <linux/errno.h>
|
#include <linux/slab.h>
|
#include <linux/mm.h>
|
#include <linux/usb.h>
|
|
#include "as102_drv.h"
|
#include "as102_usb_drv.h"
|
#include "as102_fw.h"
|
|
static void as102_usb_disconnect(struct usb_interface *interface);
|
static int as102_usb_probe(struct usb_interface *interface,
|
const struct usb_device_id *id);
|
|
static int as102_usb_start_stream(struct as102_dev_t *dev);
|
static void as102_usb_stop_stream(struct as102_dev_t *dev);
|
|
static int as102_open(struct inode *inode, struct file *file);
|
static int as102_release(struct inode *inode, struct file *file);
|
|
static const struct usb_device_id as102_usb_id_table[] = {
|
{ USB_DEVICE(AS102_USB_DEVICE_VENDOR_ID, AS102_USB_DEVICE_PID_0001) },
|
{ USB_DEVICE(PCTV_74E_USB_VID, PCTV_74E_USB_PID) },
|
{ USB_DEVICE(ELGATO_EYETV_DTT_USB_VID, ELGATO_EYETV_DTT_USB_PID) },
|
{ USB_DEVICE(NBOX_DVBT_DONGLE_USB_VID, NBOX_DVBT_DONGLE_USB_PID) },
|
{ USB_DEVICE(SKY_IT_DIGITAL_KEY_USB_VID, SKY_IT_DIGITAL_KEY_USB_PID) },
|
{ } /* Terminating entry */
|
};
|
|
/* Note that this table must always have the same number of entries as the
|
as102_usb_id_table struct */
|
static const char * const as102_device_names[] = {
|
AS102_REFERENCE_DESIGN,
|
AS102_PCTV_74E,
|
AS102_ELGATO_EYETV_DTT_NAME,
|
AS102_NBOX_DVBT_DONGLE_NAME,
|
AS102_SKY_IT_DIGITAL_KEY_NAME,
|
NULL /* Terminating entry */
|
};
|
|
/* eLNA configuration: devices built on the reference design work best
|
with 0xA0, while custom designs seem to require 0xC0 */
|
static uint8_t const as102_elna_cfg[] = {
|
0xA0,
|
0xC0,
|
0xC0,
|
0xA0,
|
0xA0,
|
0x00 /* Terminating entry */
|
};
|
|
struct usb_driver as102_usb_driver = {
|
.name = DRIVER_FULL_NAME,
|
.probe = as102_usb_probe,
|
.disconnect = as102_usb_disconnect,
|
.id_table = as102_usb_id_table
|
};
|
|
static const struct file_operations as102_dev_fops = {
|
.owner = THIS_MODULE,
|
.open = as102_open,
|
.release = as102_release,
|
};
|
|
static struct usb_class_driver as102_usb_class_driver = {
|
.name = "aton2-%d",
|
.fops = &as102_dev_fops,
|
.minor_base = AS102_DEVICE_MAJOR,
|
};
|
|
static int as102_usb_xfer_cmd(struct as10x_bus_adapter_t *bus_adap,
|
unsigned char *send_buf, int send_buf_len,
|
unsigned char *recv_buf, int recv_buf_len)
|
{
|
int ret = 0;
|
|
if (send_buf != NULL) {
|
ret = usb_control_msg(bus_adap->usb_dev,
|
usb_sndctrlpipe(bus_adap->usb_dev, 0),
|
AS102_USB_DEVICE_TX_CTRL_CMD,
|
USB_DIR_OUT | USB_TYPE_VENDOR |
|
USB_RECIP_DEVICE,
|
bus_adap->cmd_xid, /* value */
|
0, /* index */
|
send_buf, send_buf_len,
|
USB_CTRL_SET_TIMEOUT /* 200 */);
|
if (ret < 0) {
|
dev_dbg(&bus_adap->usb_dev->dev,
|
"usb_control_msg(send) failed, err %i\n", ret);
|
return ret;
|
}
|
|
if (ret != send_buf_len) {
|
dev_dbg(&bus_adap->usb_dev->dev,
|
"only wrote %d of %d bytes\n", ret, send_buf_len);
|
return -1;
|
}
|
}
|
|
if (recv_buf != NULL) {
|
#ifdef TRACE
|
dev_dbg(bus_adap->usb_dev->dev,
|
"want to read: %d bytes\n", recv_buf_len);
|
#endif
|
ret = usb_control_msg(bus_adap->usb_dev,
|
usb_rcvctrlpipe(bus_adap->usb_dev, 0),
|
AS102_USB_DEVICE_RX_CTRL_CMD,
|
USB_DIR_IN | USB_TYPE_VENDOR |
|
USB_RECIP_DEVICE,
|
bus_adap->cmd_xid, /* value */
|
0, /* index */
|
recv_buf, recv_buf_len,
|
USB_CTRL_GET_TIMEOUT /* 200 */);
|
if (ret < 0) {
|
dev_dbg(&bus_adap->usb_dev->dev,
|
"usb_control_msg(recv) failed, err %i\n", ret);
|
return ret;
|
}
|
#ifdef TRACE
|
dev_dbg(bus_adap->usb_dev->dev,
|
"read %d bytes\n", recv_buf_len);
|
#endif
|
}
|
|
return ret;
|
}
|
|
static int as102_send_ep1(struct as10x_bus_adapter_t *bus_adap,
|
unsigned char *send_buf,
|
int send_buf_len,
|
int swap32)
|
{
|
int ret, actual_len;
|
|
ret = usb_bulk_msg(bus_adap->usb_dev,
|
usb_sndbulkpipe(bus_adap->usb_dev, 1),
|
send_buf, send_buf_len, &actual_len, 200);
|
if (ret) {
|
dev_dbg(&bus_adap->usb_dev->dev,
|
"usb_bulk_msg(send) failed, err %i\n", ret);
|
return ret;
|
}
|
|
if (actual_len != send_buf_len) {
|
dev_dbg(&bus_adap->usb_dev->dev, "only wrote %d of %d bytes\n",
|
actual_len, send_buf_len);
|
return -1;
|
}
|
return actual_len;
|
}
|
|
static int as102_read_ep2(struct as10x_bus_adapter_t *bus_adap,
|
unsigned char *recv_buf, int recv_buf_len)
|
{
|
int ret, actual_len;
|
|
if (recv_buf == NULL)
|
return -EINVAL;
|
|
ret = usb_bulk_msg(bus_adap->usb_dev,
|
usb_rcvbulkpipe(bus_adap->usb_dev, 2),
|
recv_buf, recv_buf_len, &actual_len, 200);
|
if (ret) {
|
dev_dbg(&bus_adap->usb_dev->dev,
|
"usb_bulk_msg(recv) failed, err %i\n", ret);
|
return ret;
|
}
|
|
if (actual_len != recv_buf_len) {
|
dev_dbg(&bus_adap->usb_dev->dev, "only read %d of %d bytes\n",
|
actual_len, recv_buf_len);
|
return -1;
|
}
|
return actual_len;
|
}
|
|
static const struct as102_priv_ops_t as102_priv_ops = {
|
.upload_fw_pkt = as102_send_ep1,
|
.xfer_cmd = as102_usb_xfer_cmd,
|
.as102_read_ep2 = as102_read_ep2,
|
.start_stream = as102_usb_start_stream,
|
.stop_stream = as102_usb_stop_stream,
|
};
|
|
static int as102_submit_urb_stream(struct as102_dev_t *dev, struct urb *urb)
|
{
|
int err;
|
|
usb_fill_bulk_urb(urb,
|
dev->bus_adap.usb_dev,
|
usb_rcvbulkpipe(dev->bus_adap.usb_dev, 0x2),
|
urb->transfer_buffer,
|
AS102_USB_BUF_SIZE,
|
as102_urb_stream_irq,
|
dev);
|
|
err = usb_submit_urb(urb, GFP_ATOMIC);
|
if (err)
|
dev_dbg(&urb->dev->dev,
|
"%s: usb_submit_urb failed\n", __func__);
|
|
return err;
|
}
|
|
void as102_urb_stream_irq(struct urb *urb)
|
{
|
struct as102_dev_t *as102_dev = urb->context;
|
|
if (urb->actual_length > 0) {
|
dvb_dmx_swfilter(&as102_dev->dvb_dmx,
|
urb->transfer_buffer,
|
urb->actual_length);
|
} else {
|
if (urb->actual_length == 0)
|
memset(urb->transfer_buffer, 0, AS102_USB_BUF_SIZE);
|
}
|
|
/* is not stopped, re-submit urb */
|
if (as102_dev->streaming)
|
as102_submit_urb_stream(as102_dev, urb);
|
}
|
|
static void as102_free_usb_stream_buffer(struct as102_dev_t *dev)
|
{
|
int i;
|
|
for (i = 0; i < MAX_STREAM_URB; i++)
|
usb_free_urb(dev->stream_urb[i]);
|
|
usb_free_coherent(dev->bus_adap.usb_dev,
|
MAX_STREAM_URB * AS102_USB_BUF_SIZE,
|
dev->stream,
|
dev->dma_addr);
|
}
|
|
static int as102_alloc_usb_stream_buffer(struct as102_dev_t *dev)
|
{
|
int i;
|
|
dev->stream = usb_alloc_coherent(dev->bus_adap.usb_dev,
|
MAX_STREAM_URB * AS102_USB_BUF_SIZE,
|
GFP_KERNEL,
|
&dev->dma_addr);
|
if (!dev->stream) {
|
dev_dbg(&dev->bus_adap.usb_dev->dev,
|
"%s: usb_buffer_alloc failed\n", __func__);
|
return -ENOMEM;
|
}
|
|
memset(dev->stream, 0, MAX_STREAM_URB * AS102_USB_BUF_SIZE);
|
|
/* init urb buffers */
|
for (i = 0; i < MAX_STREAM_URB; i++) {
|
struct urb *urb;
|
|
urb = usb_alloc_urb(0, GFP_ATOMIC);
|
if (urb == NULL) {
|
as102_free_usb_stream_buffer(dev);
|
return -ENOMEM;
|
}
|
|
urb->transfer_buffer = dev->stream + (i * AS102_USB_BUF_SIZE);
|
urb->transfer_dma = dev->dma_addr + (i * AS102_USB_BUF_SIZE);
|
urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
|
urb->transfer_buffer_length = AS102_USB_BUF_SIZE;
|
|
dev->stream_urb[i] = urb;
|
}
|
return 0;
|
}
|
|
static void as102_usb_stop_stream(struct as102_dev_t *dev)
|
{
|
int i;
|
|
for (i = 0; i < MAX_STREAM_URB; i++)
|
usb_kill_urb(dev->stream_urb[i]);
|
}
|
|
static int as102_usb_start_stream(struct as102_dev_t *dev)
|
{
|
int i, ret = 0;
|
|
for (i = 0; i < MAX_STREAM_URB; i++) {
|
ret = as102_submit_urb_stream(dev, dev->stream_urb[i]);
|
if (ret) {
|
as102_usb_stop_stream(dev);
|
return ret;
|
}
|
}
|
|
return 0;
|
}
|
|
static void as102_usb_release(struct kref *kref)
|
{
|
struct as102_dev_t *as102_dev;
|
|
as102_dev = container_of(kref, struct as102_dev_t, kref);
|
if (as102_dev != NULL) {
|
usb_put_dev(as102_dev->bus_adap.usb_dev);
|
kfree(as102_dev);
|
}
|
}
|
|
static void as102_usb_disconnect(struct usb_interface *intf)
|
{
|
struct as102_dev_t *as102_dev;
|
|
/* extract as102_dev_t from usb_device private data */
|
as102_dev = usb_get_intfdata(intf);
|
|
/* unregister dvb layer */
|
as102_dvb_unregister(as102_dev);
|
|
/* free usb buffers */
|
as102_free_usb_stream_buffer(as102_dev);
|
|
usb_set_intfdata(intf, NULL);
|
|
/* usb unregister device */
|
usb_deregister_dev(intf, &as102_usb_class_driver);
|
|
/* decrement usage counter */
|
kref_put(&as102_dev->kref, as102_usb_release);
|
|
pr_info("%s: device has been disconnected\n", DRIVER_NAME);
|
}
|
|
static int as102_usb_probe(struct usb_interface *intf,
|
const struct usb_device_id *id)
|
{
|
int ret;
|
struct as102_dev_t *as102_dev;
|
int i;
|
|
/* This should never actually happen */
|
if (ARRAY_SIZE(as102_usb_id_table) !=
|
(sizeof(as102_device_names) / sizeof(const char *))) {
|
pr_err("Device names table invalid size");
|
return -EINVAL;
|
}
|
|
as102_dev = kzalloc(sizeof(struct as102_dev_t), GFP_KERNEL);
|
if (as102_dev == NULL)
|
return -ENOMEM;
|
|
/* Assign the user-friendly device name */
|
for (i = 0; i < ARRAY_SIZE(as102_usb_id_table); i++) {
|
if (id == &as102_usb_id_table[i]) {
|
as102_dev->name = as102_device_names[i];
|
as102_dev->elna_cfg = as102_elna_cfg[i];
|
}
|
}
|
|
if (as102_dev->name == NULL)
|
as102_dev->name = "Unknown AS102 device";
|
|
/* set private callback functions */
|
as102_dev->bus_adap.ops = &as102_priv_ops;
|
|
/* init cmd token for usb bus */
|
as102_dev->bus_adap.cmd = &as102_dev->bus_adap.token.usb.c;
|
as102_dev->bus_adap.rsp = &as102_dev->bus_adap.token.usb.r;
|
|
/* init kernel device reference */
|
kref_init(&as102_dev->kref);
|
|
/* store as102 device to usb_device private data */
|
usb_set_intfdata(intf, (void *) as102_dev);
|
|
/* store in as102 device the usb_device pointer */
|
as102_dev->bus_adap.usb_dev = usb_get_dev(interface_to_usbdev(intf));
|
|
/* we can register the device now, as it is ready */
|
ret = usb_register_dev(intf, &as102_usb_class_driver);
|
if (ret < 0) {
|
/* something prevented us from registering this driver */
|
dev_err(&intf->dev,
|
"%s: usb_register_dev() failed (errno = %d)\n",
|
__func__, ret);
|
goto failed;
|
}
|
|
pr_info("%s: device has been detected\n", DRIVER_NAME);
|
|
/* request buffer allocation for streaming */
|
ret = as102_alloc_usb_stream_buffer(as102_dev);
|
if (ret != 0)
|
goto failed_stream;
|
|
/* register dvb layer */
|
ret = as102_dvb_register(as102_dev);
|
if (ret != 0)
|
goto failed_dvb;
|
|
return ret;
|
|
failed_dvb:
|
as102_free_usb_stream_buffer(as102_dev);
|
failed_stream:
|
usb_deregister_dev(intf, &as102_usb_class_driver);
|
failed:
|
usb_put_dev(as102_dev->bus_adap.usb_dev);
|
usb_set_intfdata(intf, NULL);
|
kfree(as102_dev);
|
return ret;
|
}
|
|
static int as102_open(struct inode *inode, struct file *file)
|
{
|
int ret = 0, minor = 0;
|
struct usb_interface *intf = NULL;
|
struct as102_dev_t *dev = NULL;
|
|
/* read minor from inode */
|
minor = iminor(inode);
|
|
/* fetch device from usb interface */
|
intf = usb_find_interface(&as102_usb_driver, minor);
|
if (intf == NULL) {
|
pr_err("%s: can't find device for minor %d\n",
|
__func__, minor);
|
ret = -ENODEV;
|
goto exit;
|
}
|
|
/* get our device */
|
dev = usb_get_intfdata(intf);
|
if (dev == NULL) {
|
ret = -EFAULT;
|
goto exit;
|
}
|
|
/* save our device object in the file's private structure */
|
file->private_data = dev;
|
|
/* increment our usage count for the device */
|
kref_get(&dev->kref);
|
|
exit:
|
return ret;
|
}
|
|
static int as102_release(struct inode *inode, struct file *file)
|
{
|
struct as102_dev_t *dev = NULL;
|
|
dev = file->private_data;
|
if (dev != NULL) {
|
/* decrement the count on our device */
|
kref_put(&dev->kref, as102_usb_release);
|
}
|
|
return 0;
|
}
|
|
MODULE_DEVICE_TABLE(usb, as102_usb_id_table);
|
