mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-28 20:02:17 +00:00
[media] dsbr100: clean up and update to the latest v4l2 framework
This driver now complies with the v4l2-compliance tests and uses the v4l2 frameworks correctly. It has been tested with the radio-keene FM transmitter as well. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
parent
a1ac5dc28d
commit
5d778648ed
1 changed files with 166 additions and 363 deletions
|
@ -1,92 +1,37 @@
|
|||
/* A driver for the D-Link DSB-R100 USB radio and Gemtek USB Radio 21.
|
||||
The device plugs into both the USB and an analog audio input, so this thing
|
||||
only deals with initialisation and frequency setting, the
|
||||
audio data has to be handled by a sound driver.
|
||||
|
||||
Major issue: I can't find out where the device reports the signal
|
||||
strength, and indeed the windows software appearantly just looks
|
||||
at the stereo indicator as well. So, scanning will only find
|
||||
stereo stations. Sad, but I can't help it.
|
||||
|
||||
Also, the windows program sends oodles of messages over to the
|
||||
device, and I couldn't figure out their meaning. My suspicion
|
||||
is that they don't have any:-)
|
||||
|
||||
You might find some interesting stuff about this module at
|
||||
http://unimut.fsk.uni-heidelberg.de/unimut/demi/dsbr
|
||||
|
||||
Copyright (c) 2000 Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
|
||||
|
||||
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.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
|
||||
History:
|
||||
|
||||
Version 0.46:
|
||||
Removed usb_dsbr100_open/close calls and radio->users counter. Also,
|
||||
radio->muted changed to radio->status and suspend/resume calls updated.
|
||||
|
||||
Version 0.45:
|
||||
Converted to v4l2_device.
|
||||
|
||||
Version 0.44:
|
||||
Add suspend/resume functions, fix unplug of device,
|
||||
a lot of cleanups and fixes by Alexey Klimov <klimov.linux@gmail.com>
|
||||
|
||||
Version 0.43:
|
||||
Oliver Neukum: avoided DMA coherency issue
|
||||
|
||||
Version 0.42:
|
||||
Converted dsbr100 to use video_ioctl2
|
||||
by Douglas Landgraf <dougsland@gmail.com>
|
||||
|
||||
Version 0.41-ac1:
|
||||
Alan Cox: Some cleanups and fixes
|
||||
|
||||
Version 0.41:
|
||||
Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
|
||||
|
||||
Version 0.40:
|
||||
Markus: Updates for 2.6.x kernels, code layout changes, name sanitizing
|
||||
|
||||
Version 0.30:
|
||||
Markus: Updates for 2.5.x kernel and more ISO compliant source
|
||||
|
||||
Version 0.25:
|
||||
PSL and Markus: Cleanup, radio now doesn't stop on device close
|
||||
|
||||
Version 0.24:
|
||||
Markus: Hope I got these silly VIDEO_TUNER_LOW issues finally
|
||||
right. Some minor cleanup, improved standalone compilation
|
||||
|
||||
Version 0.23:
|
||||
Markus: Sign extension bug fixed by declaring transfer_buffer unsigned
|
||||
|
||||
Version 0.22:
|
||||
Markus: Some (brown bag) cleanup in what VIDIOCSTUNER returns,
|
||||
thanks to Mike Cox for pointing the problem out.
|
||||
|
||||
Version 0.21:
|
||||
Markus: Minor cleanup, warnings if something goes wrong, lame attempt
|
||||
to adhere to Documentation/CodingStyle
|
||||
|
||||
Version 0.2:
|
||||
Brad Hards <bradh@dynamite.com.au>: Fixes to make it work as non-module
|
||||
Markus: Copyright clarification
|
||||
|
||||
Version 0.01: Markus: initial release
|
||||
|
||||
* The device plugs into both the USB and an analog audio input, so this thing
|
||||
* only deals with initialisation and frequency setting, the
|
||||
* audio data has to be handled by a sound driver.
|
||||
*
|
||||
* Major issue: I can't find out where the device reports the signal
|
||||
* strength, and indeed the windows software appearantly just looks
|
||||
* at the stereo indicator as well. So, scanning will only find
|
||||
* stereo stations. Sad, but I can't help it.
|
||||
*
|
||||
* Also, the windows program sends oodles of messages over to the
|
||||
* device, and I couldn't figure out their meaning. My suspicion
|
||||
* is that they don't have any:-)
|
||||
*
|
||||
* You might find some interesting stuff about this module at
|
||||
* http://unimut.fsk.uni-heidelberg.de/unimut/demi/dsbr
|
||||
*
|
||||
* Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool.
|
||||
*
|
||||
* Copyright (c) 2000 Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#include <linux/kernel.h>
|
||||
|
@ -95,17 +40,19 @@
|
|||
#include <linux/slab.h>
|
||||
#include <linux/input.h>
|
||||
#include <linux/videodev2.h>
|
||||
#include <linux/usb.h>
|
||||
#include <media/v4l2-device.h>
|
||||
#include <media/v4l2-ioctl.h>
|
||||
#include <linux/usb.h>
|
||||
#include <media/v4l2-ctrls.h>
|
||||
#include <media/v4l2-event.h>
|
||||
|
||||
/*
|
||||
* Version Information
|
||||
*/
|
||||
#define DRIVER_VERSION "0.4.7"
|
||||
|
||||
#define DRIVER_AUTHOR "Markus Demleitner <msdemlei@tucana.harvard.edu>"
|
||||
#define DRIVER_DESC "D-Link DSB-R100 USB FM radio driver"
|
||||
MODULE_AUTHOR("Markus Demleitner <msdemlei@tucana.harvard.edu>");
|
||||
MODULE_DESCRIPTION("D-Link DSB-R100 USB FM radio driver");
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_VERSION("1.1.0");
|
||||
|
||||
#define DSB100_VENDOR 0x04b4
|
||||
#define DSB100_PRODUCT 0x1002
|
||||
|
@ -122,19 +69,8 @@ devices, that would be 76 and 91. */
|
|||
#define FREQ_MAX 108.0
|
||||
#define FREQ_MUL 16000
|
||||
|
||||
/* defines for radio->status */
|
||||
#define STARTED 0
|
||||
#define STOPPED 1
|
||||
|
||||
#define v4l2_dev_to_radio(d) container_of(d, struct dsbr100_device, v4l2_dev)
|
||||
|
||||
static int usb_dsbr100_probe(struct usb_interface *intf,
|
||||
const struct usb_device_id *id);
|
||||
static void usb_dsbr100_disconnect(struct usb_interface *intf);
|
||||
static int usb_dsbr100_suspend(struct usb_interface *intf,
|
||||
pm_message_t message);
|
||||
static int usb_dsbr100_resume(struct usb_interface *intf);
|
||||
|
||||
static int radio_nr = -1;
|
||||
module_param(radio_nr, int, 0);
|
||||
|
||||
|
@ -143,70 +79,58 @@ struct dsbr100_device {
|
|||
struct usb_device *usbdev;
|
||||
struct video_device videodev;
|
||||
struct v4l2_device v4l2_dev;
|
||||
struct v4l2_ctrl_handler hdl;
|
||||
|
||||
u8 *transfer_buffer;
|
||||
struct mutex v4l2_lock;
|
||||
int curfreq;
|
||||
int stereo;
|
||||
int status;
|
||||
};
|
||||
|
||||
static struct usb_device_id usb_dsbr100_device_table [] = {
|
||||
{ USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) },
|
||||
{ } /* Terminating entry */
|
||||
};
|
||||
|
||||
MODULE_DEVICE_TABLE (usb, usb_dsbr100_device_table);
|
||||
|
||||
/* USB subsystem interface */
|
||||
static struct usb_driver usb_dsbr100_driver = {
|
||||
.name = "dsbr100",
|
||||
.probe = usb_dsbr100_probe,
|
||||
.disconnect = usb_dsbr100_disconnect,
|
||||
.id_table = usb_dsbr100_device_table,
|
||||
.suspend = usb_dsbr100_suspend,
|
||||
.resume = usb_dsbr100_resume,
|
||||
.reset_resume = usb_dsbr100_resume,
|
||||
.supports_autosuspend = 0,
|
||||
bool stereo;
|
||||
bool muted;
|
||||
};
|
||||
|
||||
/* Low-level device interface begins here */
|
||||
|
||||
/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
|
||||
static int dsbr100_setfreq(struct dsbr100_device *radio, unsigned freq)
|
||||
{
|
||||
unsigned f = (freq / 16 * 80) / 1000 + 856;
|
||||
int retval = 0;
|
||||
|
||||
if (!radio->muted) {
|
||||
retval = usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
DSB100_TUNE,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
(f >> 8) & 0x00ff, f & 0xff,
|
||||
radio->transfer_buffer, 8, 300);
|
||||
if (retval >= 0)
|
||||
mdelay(1);
|
||||
}
|
||||
|
||||
if (retval >= 0) {
|
||||
radio->curfreq = freq;
|
||||
return 0;
|
||||
}
|
||||
dev_err(&radio->usbdev->dev,
|
||||
"%s - usb_control_msg returned %i, request %i\n",
|
||||
__func__, retval, DSB100_TUNE);
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* switch on radio */
|
||||
static int dsbr100_start(struct dsbr100_device *radio)
|
||||
{
|
||||
int retval;
|
||||
int request;
|
||||
|
||||
retval = usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
USB_REQ_GET_STATUS,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
0x00, 0xC7, radio->transfer_buffer, 8, 300);
|
||||
|
||||
if (retval < 0) {
|
||||
request = USB_REQ_GET_STATUS;
|
||||
goto usb_control_msg_failed;
|
||||
}
|
||||
|
||||
retval = usb_control_msg(radio->usbdev,
|
||||
int retval = usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
DSB100_ONOFF,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
0x01, 0x00, radio->transfer_buffer, 8, 300);
|
||||
|
||||
if (retval < 0) {
|
||||
request = DSB100_ONOFF;
|
||||
goto usb_control_msg_failed;
|
||||
}
|
||||
|
||||
radio->status = STARTED;
|
||||
return (radio->transfer_buffer)[0];
|
||||
|
||||
usb_control_msg_failed:
|
||||
if (retval >= 0)
|
||||
return dsbr100_setfreq(radio, radio->curfreq);
|
||||
dev_err(&radio->usbdev->dev,
|
||||
"%s - usb_control_msg returned %i, request %i\n",
|
||||
__func__, retval, request);
|
||||
__func__, retval, DSB100_ONOFF);
|
||||
return retval;
|
||||
|
||||
}
|
||||
|
@ -214,108 +138,33 @@ static int dsbr100_start(struct dsbr100_device *radio)
|
|||
/* switch off radio */
|
||||
static int dsbr100_stop(struct dsbr100_device *radio)
|
||||
{
|
||||
int retval;
|
||||
int request;
|
||||
|
||||
retval = usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
USB_REQ_GET_STATUS,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
0x16, 0x1C, radio->transfer_buffer, 8, 300);
|
||||
|
||||
if (retval < 0) {
|
||||
request = USB_REQ_GET_STATUS;
|
||||
goto usb_control_msg_failed;
|
||||
}
|
||||
|
||||
retval = usb_control_msg(radio->usbdev,
|
||||
int retval = usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
DSB100_ONOFF,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
0x00, 0x00, radio->transfer_buffer, 8, 300);
|
||||
|
||||
if (retval < 0) {
|
||||
request = DSB100_ONOFF;
|
||||
goto usb_control_msg_failed;
|
||||
}
|
||||
|
||||
radio->status = STOPPED;
|
||||
return (radio->transfer_buffer)[0];
|
||||
|
||||
usb_control_msg_failed:
|
||||
if (retval >= 0)
|
||||
return 0;
|
||||
dev_err(&radio->usbdev->dev,
|
||||
"%s - usb_control_msg returned %i, request %i\n",
|
||||
__func__, retval, request);
|
||||
__func__, retval, DSB100_ONOFF);
|
||||
return retval;
|
||||
|
||||
}
|
||||
|
||||
/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
|
||||
static int dsbr100_setfreq(struct dsbr100_device *radio)
|
||||
{
|
||||
int retval;
|
||||
int request;
|
||||
int freq = (radio->curfreq / 16 * 80) / 1000 + 856;
|
||||
|
||||
retval = usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
DSB100_TUNE,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
(freq >> 8) & 0x00ff, freq & 0xff,
|
||||
radio->transfer_buffer, 8, 300);
|
||||
|
||||
if (retval < 0) {
|
||||
request = DSB100_TUNE;
|
||||
goto usb_control_msg_failed;
|
||||
}
|
||||
|
||||
retval = usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
USB_REQ_GET_STATUS,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
0x96, 0xB7, radio->transfer_buffer, 8, 300);
|
||||
|
||||
if (retval < 0) {
|
||||
request = USB_REQ_GET_STATUS;
|
||||
goto usb_control_msg_failed;
|
||||
}
|
||||
|
||||
retval = usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
USB_REQ_GET_STATUS,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
0x00, 0x24, radio->transfer_buffer, 8, 300);
|
||||
|
||||
if (retval < 0) {
|
||||
request = USB_REQ_GET_STATUS;
|
||||
goto usb_control_msg_failed;
|
||||
}
|
||||
|
||||
radio->stereo = !((radio->transfer_buffer)[0] & 0x01);
|
||||
return (radio->transfer_buffer)[0];
|
||||
|
||||
usb_control_msg_failed:
|
||||
radio->stereo = -1;
|
||||
dev_err(&radio->usbdev->dev,
|
||||
"%s - usb_control_msg returned %i, request %i\n",
|
||||
__func__, retval, request);
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* return the device status. This is, in effect, just whether it
|
||||
sees a stereo signal or not. Pity. */
|
||||
static void dsbr100_getstat(struct dsbr100_device *radio)
|
||||
{
|
||||
int retval;
|
||||
|
||||
retval = usb_control_msg(radio->usbdev,
|
||||
int retval = usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
USB_REQ_GET_STATUS,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
0x00 , 0x24, radio->transfer_buffer, 8, 300);
|
||||
0x00, 0x24, radio->transfer_buffer, 8, 300);
|
||||
|
||||
if (retval < 0) {
|
||||
radio->stereo = -1;
|
||||
radio->stereo = false;
|
||||
dev_err(&radio->usbdev->dev,
|
||||
"%s - usb_control_msg returned %i, request %i\n",
|
||||
__func__, retval, USB_REQ_GET_STATUS);
|
||||
|
@ -332,7 +181,8 @@ static int vidioc_querycap(struct file *file, void *priv,
|
|||
strlcpy(v->driver, "dsbr100", sizeof(v->driver));
|
||||
strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card));
|
||||
usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));
|
||||
v->capabilities = V4L2_CAP_TUNER;
|
||||
v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
|
||||
v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -349,13 +199,11 @@ static int vidioc_g_tuner(struct file *file, void *priv,
|
|||
v->type = V4L2_TUNER_RADIO;
|
||||
v->rangelow = FREQ_MIN * FREQ_MUL;
|
||||
v->rangehigh = FREQ_MAX * FREQ_MUL;
|
||||
v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
|
||||
v->capability = V4L2_TUNER_CAP_LOW;
|
||||
if(radio->stereo)
|
||||
v->audmode = V4L2_TUNER_MODE_STEREO;
|
||||
else
|
||||
v->audmode = V4L2_TUNER_MODE_MONO;
|
||||
v->signal = 0xffff; /* We can't get the signal strength */
|
||||
v->rxsubchans = radio->stereo ? V4L2_TUNER_SUB_STEREO :
|
||||
V4L2_TUNER_SUB_MONO;
|
||||
v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
|
||||
v->audmode = V4L2_TUNER_MODE_STEREO;
|
||||
v->signal = radio->stereo ? 0xffff : 0; /* We can't get the signal strength */
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -369,14 +217,12 @@ static int vidioc_s_frequency(struct file *file, void *priv,
|
|||
struct v4l2_frequency *f)
|
||||
{
|
||||
struct dsbr100_device *radio = video_drvdata(file);
|
||||
int retval;
|
||||
|
||||
radio->curfreq = f->frequency;
|
||||
if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
|
||||
return -EINVAL;
|
||||
|
||||
retval = dsbr100_setfreq(radio);
|
||||
if (retval < 0)
|
||||
dev_warn(&radio->usbdev->dev, "Set frequency failed\n");
|
||||
return 0;
|
||||
return dsbr100_setfreq(radio, clamp_t(unsigned, f->frequency,
|
||||
FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL));
|
||||
}
|
||||
|
||||
static int vidioc_g_frequency(struct file *file, void *priv,
|
||||
|
@ -384,90 +230,26 @@ static int vidioc_g_frequency(struct file *file, void *priv,
|
|||
{
|
||||
struct dsbr100_device *radio = video_drvdata(file);
|
||||
|
||||
if (f->tuner)
|
||||
return -EINVAL;
|
||||
f->type = V4L2_TUNER_RADIO;
|
||||
f->frequency = radio->curfreq;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_queryctrl(struct file *file, void *priv,
|
||||
struct v4l2_queryctrl *qc)
|
||||
static int usb_dsbr100_s_ctrl(struct v4l2_ctrl *ctrl)
|
||||
{
|
||||
switch (qc->id) {
|
||||
case V4L2_CID_AUDIO_MUTE:
|
||||
return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int vidioc_g_ctrl(struct file *file, void *priv,
|
||||
struct v4l2_control *ctrl)
|
||||
{
|
||||
struct dsbr100_device *radio = video_drvdata(file);
|
||||
struct dsbr100_device *radio =
|
||||
container_of(ctrl->handler, struct dsbr100_device, hdl);
|
||||
|
||||
switch (ctrl->id) {
|
||||
case V4L2_CID_AUDIO_MUTE:
|
||||
ctrl->value = radio->status;
|
||||
return 0;
|
||||
radio->muted = ctrl->val;
|
||||
return radio->muted ? dsbr100_stop(radio) : dsbr100_start(radio);
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int vidioc_s_ctrl(struct file *file, void *priv,
|
||||
struct v4l2_control *ctrl)
|
||||
{
|
||||
struct dsbr100_device *radio = video_drvdata(file);
|
||||
int retval;
|
||||
|
||||
switch (ctrl->id) {
|
||||
case V4L2_CID_AUDIO_MUTE:
|
||||
if (ctrl->value) {
|
||||
retval = dsbr100_stop(radio);
|
||||
if (retval < 0) {
|
||||
dev_warn(&radio->usbdev->dev,
|
||||
"Radio did not respond properly\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
} else {
|
||||
retval = dsbr100_start(radio);
|
||||
if (retval < 0) {
|
||||
dev_warn(&radio->usbdev->dev,
|
||||
"Radio did not respond properly\n");
|
||||
return -EBUSY;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static int vidioc_g_audio(struct file *file, void *priv,
|
||||
struct v4l2_audio *a)
|
||||
{
|
||||
if (a->index > 1)
|
||||
return -EINVAL;
|
||||
|
||||
strcpy(a->name, "Radio");
|
||||
a->capability = V4L2_AUDCAP_STEREO;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
|
||||
{
|
||||
*i = 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
|
||||
{
|
||||
return i ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
static int vidioc_s_audio(struct file *file, void *priv,
|
||||
struct v4l2_audio *a)
|
||||
{
|
||||
return a->index ? -EINVAL : 0;
|
||||
}
|
||||
|
||||
/* USB subsystem interface begins here */
|
||||
|
||||
|
@ -482,6 +264,16 @@ static void usb_dsbr100_disconnect(struct usb_interface *intf)
|
|||
struct dsbr100_device *radio = usb_get_intfdata(intf);
|
||||
|
||||
mutex_lock(&radio->v4l2_lock);
|
||||
/*
|
||||
* Disconnect is also called on unload, and in that case we need to
|
||||
* mute the device. This call will silently fail if it is called
|
||||
* after a physical disconnect.
|
||||
*/
|
||||
usb_control_msg(radio->usbdev,
|
||||
usb_rcvctrlpipe(radio->usbdev, 0),
|
||||
DSB100_ONOFF,
|
||||
USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
|
||||
0x00, 0x00, radio->transfer_buffer, 8, 300);
|
||||
usb_set_intfdata(intf, NULL);
|
||||
video_unregister_device(&radio->videodev);
|
||||
v4l2_device_disconnect(&radio->v4l2_dev);
|
||||
|
@ -494,25 +286,13 @@ static void usb_dsbr100_disconnect(struct usb_interface *intf)
|
|||
static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message)
|
||||
{
|
||||
struct dsbr100_device *radio = usb_get_intfdata(intf);
|
||||
int retval;
|
||||
|
||||
mutex_lock(&radio->v4l2_lock);
|
||||
if (radio->status == STARTED) {
|
||||
retval = dsbr100_stop(radio);
|
||||
if (retval < 0)
|
||||
dev_warn(&intf->dev, "dsbr100_stop failed\n");
|
||||
|
||||
/* After dsbr100_stop() status set to STOPPED.
|
||||
* If we want driver to start radio on resume
|
||||
* we set status equal to STARTED.
|
||||
* On resume we will check status and run radio if needed.
|
||||
*/
|
||||
radio->status = STARTED;
|
||||
}
|
||||
if (!radio->muted && dsbr100_stop(radio) < 0)
|
||||
dev_warn(&intf->dev, "dsbr100_stop failed\n");
|
||||
mutex_unlock(&radio->v4l2_lock);
|
||||
|
||||
dev_info(&intf->dev, "going into suspend..\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -520,18 +300,13 @@ static int usb_dsbr100_suspend(struct usb_interface *intf, pm_message_t message)
|
|||
static int usb_dsbr100_resume(struct usb_interface *intf)
|
||||
{
|
||||
struct dsbr100_device *radio = usb_get_intfdata(intf);
|
||||
int retval;
|
||||
|
||||
mutex_lock(&radio->v4l2_lock);
|
||||
if (radio->status == STARTED) {
|
||||
retval = dsbr100_start(radio);
|
||||
if (retval < 0)
|
||||
dev_warn(&intf->dev, "dsbr100_start failed\n");
|
||||
}
|
||||
if (!radio->muted && dsbr100_start(radio) < 0)
|
||||
dev_warn(&intf->dev, "dsbr100_start failed\n");
|
||||
mutex_unlock(&radio->v4l2_lock);
|
||||
|
||||
dev_info(&intf->dev, "coming out of suspend..\n");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
@ -540,15 +315,23 @@ static void usb_dsbr100_release(struct v4l2_device *v4l2_dev)
|
|||
{
|
||||
struct dsbr100_device *radio = v4l2_dev_to_radio(v4l2_dev);
|
||||
|
||||
v4l2_ctrl_handler_free(&radio->hdl);
|
||||
v4l2_device_unregister(&radio->v4l2_dev);
|
||||
kfree(radio->transfer_buffer);
|
||||
kfree(radio);
|
||||
}
|
||||
|
||||
static const struct v4l2_ctrl_ops usb_dsbr100_ctrl_ops = {
|
||||
.s_ctrl = usb_dsbr100_s_ctrl,
|
||||
};
|
||||
|
||||
/* File system interface */
|
||||
static const struct v4l2_file_operations usb_dsbr100_fops = {
|
||||
.owner = THIS_MODULE,
|
||||
.unlocked_ioctl = video_ioctl2,
|
||||
.open = v4l2_fh_open,
|
||||
.release = v4l2_fh_release,
|
||||
.poll = v4l2_ctrl_poll,
|
||||
};
|
||||
|
||||
static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = {
|
||||
|
@ -557,13 +340,9 @@ static const struct v4l2_ioctl_ops usb_dsbr100_ioctl_ops = {
|
|||
.vidioc_s_tuner = vidioc_s_tuner,
|
||||
.vidioc_g_frequency = vidioc_g_frequency,
|
||||
.vidioc_s_frequency = vidioc_s_frequency,
|
||||
.vidioc_queryctrl = vidioc_queryctrl,
|
||||
.vidioc_g_ctrl = vidioc_g_ctrl,
|
||||
.vidioc_s_ctrl = vidioc_s_ctrl,
|
||||
.vidioc_g_audio = vidioc_g_audio,
|
||||
.vidioc_s_audio = vidioc_s_audio,
|
||||
.vidioc_g_input = vidioc_g_input,
|
||||
.vidioc_s_input = vidioc_s_input,
|
||||
.vidioc_log_status = v4l2_ctrl_log_status,
|
||||
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
||||
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
||||
};
|
||||
|
||||
/* check if the device is present and register with v4l and usb if it is */
|
||||
|
@ -592,11 +371,17 @@ static int usb_dsbr100_probe(struct usb_interface *intf,
|
|||
retval = v4l2_device_register(&intf->dev, v4l2_dev);
|
||||
if (retval < 0) {
|
||||
v4l2_err(v4l2_dev, "couldn't register v4l2_device\n");
|
||||
kfree(radio->transfer_buffer);
|
||||
kfree(radio);
|
||||
return retval;
|
||||
goto err_reg_dev;
|
||||
}
|
||||
|
||||
v4l2_ctrl_handler_init(&radio->hdl, 1);
|
||||
v4l2_ctrl_new_std(&radio->hdl, &usb_dsbr100_ctrl_ops,
|
||||
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
|
||||
if (radio->hdl.error) {
|
||||
retval = radio->hdl.error;
|
||||
v4l2_err(v4l2_dev, "couldn't register control\n");
|
||||
goto err_reg_ctrl;
|
||||
}
|
||||
mutex_init(&radio->v4l2_lock);
|
||||
strlcpy(radio->videodev.name, v4l2_dev->name, sizeof(radio->videodev.name));
|
||||
radio->videodev.v4l2_dev = v4l2_dev;
|
||||
|
@ -604,28 +389,46 @@ static int usb_dsbr100_probe(struct usb_interface *intf,
|
|||
radio->videodev.ioctl_ops = &usb_dsbr100_ioctl_ops;
|
||||
radio->videodev.release = video_device_release_empty;
|
||||
radio->videodev.lock = &radio->v4l2_lock;
|
||||
radio->videodev.ctrl_handler = &radio->hdl;
|
||||
set_bit(V4L2_FL_USE_FH_PRIO, &radio->videodev.flags);
|
||||
|
||||
radio->usbdev = interface_to_usbdev(intf);
|
||||
radio->curfreq = FREQ_MIN * FREQ_MUL;
|
||||
radio->status = STOPPED;
|
||||
radio->muted = true;
|
||||
|
||||
video_set_drvdata(&radio->videodev, radio);
|
||||
usb_set_intfdata(intf, radio);
|
||||
|
||||
retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, radio_nr);
|
||||
if (retval < 0) {
|
||||
v4l2_err(v4l2_dev, "couldn't register video device\n");
|
||||
v4l2_device_unregister(v4l2_dev);
|
||||
kfree(radio->transfer_buffer);
|
||||
kfree(radio);
|
||||
return -EIO;
|
||||
}
|
||||
usb_set_intfdata(intf, radio);
|
||||
return 0;
|
||||
if (retval == 0)
|
||||
return 0;
|
||||
v4l2_err(v4l2_dev, "couldn't register video device\n");
|
||||
|
||||
err_reg_ctrl:
|
||||
v4l2_ctrl_handler_free(&radio->hdl);
|
||||
v4l2_device_unregister(v4l2_dev);
|
||||
err_reg_dev:
|
||||
kfree(radio->transfer_buffer);
|
||||
kfree(radio);
|
||||
return retval;
|
||||
}
|
||||
|
||||
module_usb_driver(usb_dsbr100_driver);
|
||||
static struct usb_device_id usb_dsbr100_device_table[] = {
|
||||
{ USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) },
|
||||
{ } /* Terminating entry */
|
||||
};
|
||||
|
||||
MODULE_AUTHOR( DRIVER_AUTHOR );
|
||||
MODULE_DESCRIPTION( DRIVER_DESC );
|
||||
MODULE_LICENSE("GPL");
|
||||
MODULE_VERSION(DRIVER_VERSION);
|
||||
MODULE_DEVICE_TABLE(usb, usb_dsbr100_device_table);
|
||||
|
||||
/* USB subsystem interface */
|
||||
static struct usb_driver usb_dsbr100_driver = {
|
||||
.name = "dsbr100",
|
||||
.probe = usb_dsbr100_probe,
|
||||
.disconnect = usb_dsbr100_disconnect,
|
||||
.id_table = usb_dsbr100_device_table,
|
||||
.suspend = usb_dsbr100_suspend,
|
||||
.resume = usb_dsbr100_resume,
|
||||
.reset_resume = usb_dsbr100_resume,
|
||||
};
|
||||
|
||||
module_usb_driver(usb_dsbr100_driver);
|
||||
|
|
Loading…
Reference in a new issue