[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:
Hans Verkuil
Mauro Carvalho Chehab
parent
a1ac5dc28d
commit
5d778648ed
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@ -1,92 +1,37 @@
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/* A driver for the D-Link DSB-R100 USB radio and Gemtek USB Radio 21.
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The device plugs into both the USB and an analog audio input, so this thing
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only deals with initialisation and frequency setting, the
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audio data has to be handled by a sound driver.
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Major issue: I can't find out where the device reports the signal
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strength, and indeed the windows software appearantly just looks
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at the stereo indicator as well. So, scanning will only find
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stereo stations. Sad, but I can't help it.
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Also, the windows program sends oodles of messages over to the
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device, and I couldn't figure out their meaning. My suspicion
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is that they don't have any:-)
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You might find some interesting stuff about this module at
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http://unimut.fsk.uni-heidelberg.de/unimut/demi/dsbr
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Copyright (c) 2000 Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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History:
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Version 0.46:
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Removed usb_dsbr100_open/close calls and radio->users counter. Also,
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radio->muted changed to radio->status and suspend/resume calls updated.
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Version 0.45:
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Converted to v4l2_device.
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Version 0.44:
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Add suspend/resume functions, fix unplug of device,
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a lot of cleanups and fixes by Alexey Klimov <klimov.linux@gmail.com>
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Version 0.43:
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Oliver Neukum: avoided DMA coherency issue
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Version 0.42:
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Converted dsbr100 to use video_ioctl2
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by Douglas Landgraf <dougsland@gmail.com>
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Version 0.41-ac1:
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Alan Cox: Some cleanups and fixes
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Version 0.41:
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Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org>
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Version 0.40:
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Markus: Updates for 2.6.x kernels, code layout changes, name sanitizing
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Version 0.30:
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Markus: Updates for 2.5.x kernel and more ISO compliant source
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Version 0.25:
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PSL and Markus: Cleanup, radio now doesn't stop on device close
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Version 0.24:
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Markus: Hope I got these silly VIDEO_TUNER_LOW issues finally
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right. Some minor cleanup, improved standalone compilation
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Version 0.23:
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Markus: Sign extension bug fixed by declaring transfer_buffer unsigned
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Version 0.22:
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Markus: Some (brown bag) cleanup in what VIDIOCSTUNER returns,
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thanks to Mike Cox for pointing the problem out.
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Version 0.21:
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Markus: Minor cleanup, warnings if something goes wrong, lame attempt
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to adhere to Documentation/CodingStyle
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Version 0.2:
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Brad Hards <bradh@dynamite.com.au>: Fixes to make it work as non-module
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Markus: Copyright clarification
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Version 0.01: Markus: initial release
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* The device plugs into both the USB and an analog audio input, so this thing
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* only deals with initialisation and frequency setting, the
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* audio data has to be handled by a sound driver.
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*
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* Major issue: I can't find out where the device reports the signal
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* strength, and indeed the windows software appearantly just looks
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* at the stereo indicator as well. So, scanning will only find
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* stereo stations. Sad, but I can't help it.
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*
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* Also, the windows program sends oodles of messages over to the
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* device, and I couldn't figure out their meaning. My suspicion
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* is that they don't have any:-)
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*
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* You might find some interesting stuff about this module at
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* http://unimut.fsk.uni-heidelberg.de/unimut/demi/dsbr
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*
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* Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool.
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*
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* Copyright (c) 2000 Markus Demleitner <msdemlei@cl.uni-heidelberg.de>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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@ -95,17 +40,19 @@
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#include <linux/slab.h>
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#include <linux/input.h>
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#include <linux/videodev2.h>
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#include <linux/usb.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <linux/usb.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-event.h>
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/*
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* Version Information
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*/
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#define DRIVER_VERSION "0.4.7"
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#define DRIVER_AUTHOR "Markus Demleitner <msdemlei@tucana.harvard.edu>"
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#define DRIVER_DESC "D-Link DSB-R100 USB FM radio driver"
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MODULE_AUTHOR("Markus Demleitner <msdemlei@tucana.harvard.edu>");
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MODULE_DESCRIPTION("D-Link DSB-R100 USB FM radio driver");
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MODULE_LICENSE("GPL");
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MODULE_VERSION("1.1.0");
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#define DSB100_VENDOR 0x04b4
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#define DSB100_PRODUCT 0x1002
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@ -122,19 +69,8 @@ devices, that would be 76 and 91. */
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#define FREQ_MAX 108.0
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#define FREQ_MUL 16000
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/* defines for radio->status */
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#define STARTED 0
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#define STOPPED 1
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#define v4l2_dev_to_radio(d) container_of(d, struct dsbr100_device, v4l2_dev)
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static int usb_dsbr100_probe(struct usb_interface *intf,
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const struct usb_device_id *id);
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static void usb_dsbr100_disconnect(struct usb_interface *intf);
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static int usb_dsbr100_suspend(struct usb_interface *intf,
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pm_message_t message);
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static int usb_dsbr100_resume(struct usb_interface *intf);
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static int radio_nr = -1;
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module_param(radio_nr, int, 0);
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@ -143,70 +79,58 @@ struct dsbr100_device {
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struct usb_device *usbdev;
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struct video_device videodev;
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struct v4l2_device v4l2_dev;
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struct v4l2_ctrl_handler hdl;
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u8 *transfer_buffer;
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struct mutex v4l2_lock;
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int curfreq;
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int stereo;
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int status;
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};
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static struct usb_device_id usb_dsbr100_device_table [] = {
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{ USB_DEVICE(DSB100_VENDOR, DSB100_PRODUCT) },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE (usb, usb_dsbr100_device_table);
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/* USB subsystem interface */
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static struct usb_driver usb_dsbr100_driver = {
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.name = "dsbr100",
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.probe = usb_dsbr100_probe,
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.disconnect = usb_dsbr100_disconnect,
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.id_table = usb_dsbr100_device_table,
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.suspend = usb_dsbr100_suspend,
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.resume = usb_dsbr100_resume,
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.reset_resume = usb_dsbr100_resume,
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.supports_autosuspend = 0,
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bool stereo;
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bool muted;
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};
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/* Low-level device interface begins here */
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/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
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static int dsbr100_setfreq(struct dsbr100_device *radio, unsigned freq)
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{
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unsigned f = (freq / 16 * 80) / 1000 + 856;
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int retval = 0;
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if (!radio->muted) {
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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DSB100_TUNE,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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(f >> 8) & 0x00ff, f & 0xff,
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radio->transfer_buffer, 8, 300);
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if (retval >= 0)
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mdelay(1);
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}
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if (retval >= 0) {
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radio->curfreq = freq;
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return 0;
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}
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dev_err(&radio->usbdev->dev,
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"%s - usb_control_msg returned %i, request %i\n",
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__func__, retval, DSB100_TUNE);
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return retval;
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}
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/* switch on radio */
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static int dsbr100_start(struct dsbr100_device *radio)
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{
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int retval;
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int request;
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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USB_REQ_GET_STATUS,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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0x00, 0xC7, radio->transfer_buffer, 8, 300);
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if (retval < 0) {
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request = USB_REQ_GET_STATUS;
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goto usb_control_msg_failed;
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}
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retval = usb_control_msg(radio->usbdev,
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int retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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DSB100_ONOFF,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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0x01, 0x00, radio->transfer_buffer, 8, 300);
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if (retval < 0) {
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request = DSB100_ONOFF;
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goto usb_control_msg_failed;
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}
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radio->status = STARTED;
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return (radio->transfer_buffer)[0];
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usb_control_msg_failed:
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if (retval >= 0)
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return dsbr100_setfreq(radio, radio->curfreq);
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dev_err(&radio->usbdev->dev,
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"%s - usb_control_msg returned %i, request %i\n",
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__func__, retval, request);
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__func__, retval, DSB100_ONOFF);
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return retval;
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}
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@ -214,108 +138,33 @@ usb_control_msg_failed:
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/* switch off radio */
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static int dsbr100_stop(struct dsbr100_device *radio)
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{
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int retval;
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int request;
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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USB_REQ_GET_STATUS,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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0x16, 0x1C, radio->transfer_buffer, 8, 300);
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if (retval < 0) {
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request = USB_REQ_GET_STATUS;
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goto usb_control_msg_failed;
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}
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retval = usb_control_msg(radio->usbdev,
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int retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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DSB100_ONOFF,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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0x00, 0x00, radio->transfer_buffer, 8, 300);
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if (retval < 0) {
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request = DSB100_ONOFF;
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goto usb_control_msg_failed;
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}
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radio->status = STOPPED;
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return (radio->transfer_buffer)[0];
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usb_control_msg_failed:
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if (retval >= 0)
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return 0;
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dev_err(&radio->usbdev->dev,
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"%s - usb_control_msg returned %i, request %i\n",
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__func__, retval, request);
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__func__, retval, DSB100_ONOFF);
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return retval;
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}
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/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
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static int dsbr100_setfreq(struct dsbr100_device *radio)
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{
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int retval;
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int request;
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int freq = (radio->curfreq / 16 * 80) / 1000 + 856;
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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DSB100_TUNE,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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(freq >> 8) & 0x00ff, freq & 0xff,
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radio->transfer_buffer, 8, 300);
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if (retval < 0) {
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request = DSB100_TUNE;
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goto usb_control_msg_failed;
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}
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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USB_REQ_GET_STATUS,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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0x96, 0xB7, radio->transfer_buffer, 8, 300);
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if (retval < 0) {
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request = USB_REQ_GET_STATUS;
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goto usb_control_msg_failed;
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}
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retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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USB_REQ_GET_STATUS,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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0x00, 0x24, radio->transfer_buffer, 8, 300);
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if (retval < 0) {
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request = USB_REQ_GET_STATUS;
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goto usb_control_msg_failed;
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}
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radio->stereo = !((radio->transfer_buffer)[0] & 0x01);
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return (radio->transfer_buffer)[0];
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usb_control_msg_failed:
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radio->stereo = -1;
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dev_err(&radio->usbdev->dev,
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"%s - usb_control_msg returned %i, request %i\n",
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__func__, retval, request);
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return retval;
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}
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/* return the device status. This is, in effect, just whether it
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sees a stereo signal or not. Pity. */
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static void dsbr100_getstat(struct dsbr100_device *radio)
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{
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int retval;
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retval = usb_control_msg(radio->usbdev,
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int retval = usb_control_msg(radio->usbdev,
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usb_rcvctrlpipe(radio->usbdev, 0),
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USB_REQ_GET_STATUS,
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USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
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0x00 , 0x24, radio->transfer_buffer, 8, 300);
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0x00, 0x24, radio->transfer_buffer, 8, 300);
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if (retval < 0) {
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radio->stereo = -1;
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radio->stereo = false;
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dev_err(&radio->usbdev->dev,
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"%s - usb_control_msg returned %i, request %i\n",
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__func__, retval, USB_REQ_GET_STATUS);
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@ -332,7 +181,8 @@ static int vidioc_querycap(struct file *file, void *priv,
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strlcpy(v->driver, "dsbr100", sizeof(v->driver));
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strlcpy(v->card, "D-Link R-100 USB FM Radio", sizeof(v->card));
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usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));
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v->capabilities = V4L2_CAP_TUNER;
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v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER;
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v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS;
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return 0;
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}
|
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|
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|
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@ -349,13 +199,11 @@ static int vidioc_g_tuner(struct file *file, void *priv,
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v->type = V4L2_TUNER_RADIO;
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v->rangelow = FREQ_MIN * FREQ_MUL;
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v->rangehigh = FREQ_MAX * FREQ_MUL;
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v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
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v->capability = V4L2_TUNER_CAP_LOW;
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if(radio->stereo)
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v->audmode = V4L2_TUNER_MODE_STEREO;
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else
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v->audmode = V4L2_TUNER_MODE_MONO;
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v->signal = 0xffff; /* We can't get the signal strength */
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v->rxsubchans = radio->stereo ? V4L2_TUNER_SUB_STEREO :
|
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V4L2_TUNER_SUB_MONO;
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v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO;
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v->audmode = V4L2_TUNER_MODE_STEREO;
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v->signal = radio->stereo ? 0xffff : 0; /* We can't get the signal strength */
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return 0;
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}
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|
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@ -369,14 +217,12 @@ static int vidioc_s_frequency(struct file *file, void *priv,
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struct v4l2_frequency *f)
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{
|
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struct dsbr100_device *radio = video_drvdata(file);
|
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int retval;
|
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|
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radio->curfreq = f->frequency;
|
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if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
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return -EINVAL;
|
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|
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retval = dsbr100_setfreq(radio);
|
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if (retval < 0)
|
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dev_warn(&radio->usbdev->dev, "Set frequency failed\n");
|
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return 0;
|
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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);
|
||||
|
|
|
|||
Reference in New Issue