2008-10-01 12:40:59 +00:00
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/*
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* A driver for the AverMedia MR 800 USB FM radio. This device plugs
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* into both the USB and an analog audio input, so this thing
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* only deals with initialization 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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* Copyright (c) 2008 Alexey Klimov <klimov.linux@gmail.com>
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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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/*
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2009-02-05 11:58:31 +00:00
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* Big thanks to authors and contributors of dsbr100.c and radio-si470x.c
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2008-10-01 12:40:59 +00:00
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*
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* When work was looked pretty good, i discover this:
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* http://av-usbradio.sourceforge.net/index.php
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* http://sourceforge.net/projects/av-usbradio/
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* Latest release of theirs project was in 2005.
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* Probably, this driver could be improved trough using their
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* achievements (specifications given).
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2009-02-05 11:58:31 +00:00
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* Also, Faidon Liambotis <paravoid@debian.org> wrote nice driver for this radio
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* in 2007. He allowed to use his driver to improve current mr800 radio driver.
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* http://kerneltrap.org/mailarchive/linux-usb-devel/2007/10/11/342492
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2008-10-01 12:40:59 +00:00
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*
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* Version 0.01: First working version.
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* It's required to blacklist AverMedia USB Radio
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* in usbhid/hid-quirks.c
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2009-02-05 11:58:31 +00:00
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* Version 0.10: A lot of cleanups and fixes: unpluging the device,
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* few mutex locks were added, codinstyle issues, etc.
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* Added stereo support. Thanks to
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* Douglas Schilling Landgraf <dougsland@gmail.com> and
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* David Ellingsworth <david@identd.dyndns.org>
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* for discussion, help and support.
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2009-04-03 21:45:27 +00:00
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* Version 0.11: Converted to v4l2_device.
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2008-10-01 12:40:59 +00:00
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*
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* Many things to do:
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2009-07-23 06:31:31 +00:00
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* - Correct power management of device (suspend & resume)
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2008-10-01 12:40:59 +00:00
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* - Add code for scanning and smooth tuning
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* - Add code for sensitivity value
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* - Correct mistakes
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* - In Japan another FREQ_MIN and FREQ_MAX
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*/
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/* kernel includes */
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/slab.h>
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2009-07-11 18:08:37 +00:00
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#include <linux/smp_lock.h>
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2008-10-01 12:40:59 +00:00
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#include <linux/input.h>
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#include <linux/videodev2.h>
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2009-04-03 21:45:27 +00:00
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#include <media/v4l2-device.h>
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2008-10-01 12:40:59 +00:00
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#include <media/v4l2-ioctl.h>
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#include <linux/usb.h>
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#include <linux/version.h> /* for KERNEL_VERSION MACRO */
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2009-05-12 20:39:27 +00:00
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#include <linux/mutex.h>
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2008-10-01 12:40:59 +00:00
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/* driver and module definitions */
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#define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>"
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#define DRIVER_DESC "AverMedia MR 800 USB FM radio driver"
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2009-04-03 21:45:27 +00:00
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#define DRIVER_VERSION "0.11"
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#define RADIO_VERSION KERNEL_VERSION(0, 1, 1)
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2008-10-01 12:40:59 +00:00
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MODULE_AUTHOR(DRIVER_AUTHOR);
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MODULE_DESCRIPTION(DRIVER_DESC);
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MODULE_LICENSE("GPL");
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#define USB_AMRADIO_VENDOR 0x07ca
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#define USB_AMRADIO_PRODUCT 0xb800
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2008-11-04 18:02:36 +00:00
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/* dev_warn macro with driver name */
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#define MR800_DRIVER_NAME "radio-mr800"
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#define amradio_dev_warn(dev, fmt, arg...) \
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dev_warn(dev, MR800_DRIVER_NAME " - " fmt, ##arg)
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2008-10-01 12:40:59 +00:00
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/* Probably USB_TIMEOUT should be modified in module parameter */
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#define BUFFER_LENGTH 8
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#define USB_TIMEOUT 500
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/* Frequency limits in MHz -- these are European values. For Japanese
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devices, that would be 76 and 91. */
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#define FREQ_MIN 87.5
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#define FREQ_MAX 108.0
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#define FREQ_MUL 16000
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2009-02-05 11:53:02 +00:00
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/*
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* Commands that device should understand
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* List isnt full and will be updated with implementation of new functions
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*/
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2009-02-05 11:54:17 +00:00
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#define AMRADIO_SET_FREQ 0xa4
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2009-02-05 11:53:02 +00:00
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#define AMRADIO_SET_MUTE 0xab
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2009-02-05 11:56:07 +00:00
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#define AMRADIO_SET_MONO 0xae
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2009-02-05 11:53:02 +00:00
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/* Comfortable defines for amradio_set_mute */
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#define AMRADIO_START 0x00
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#define AMRADIO_STOP 0x01
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2009-02-05 11:56:07 +00:00
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/* Comfortable defines for amradio_set_stereo */
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#define WANT_STEREO 0x00
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#define WANT_MONO 0x01
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2008-10-01 12:40:59 +00:00
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/* module parameter */
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static int radio_nr = -1;
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module_param(radio_nr, int, 0);
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MODULE_PARM_DESC(radio_nr, "Radio Nr");
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static int usb_amradio_probe(struct usb_interface *intf,
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const struct usb_device_id *id);
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static void usb_amradio_disconnect(struct usb_interface *intf);
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2008-12-30 09:58:20 +00:00
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static int usb_amradio_open(struct file *file);
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static int usb_amradio_close(struct file *file);
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2008-10-01 12:40:59 +00:00
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static int usb_amradio_suspend(struct usb_interface *intf,
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pm_message_t message);
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static int usb_amradio_resume(struct usb_interface *intf);
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/* Data for one (physical) device */
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struct amradio_device {
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/* reference to USB and video device */
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struct usb_device *usbdev;
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2009-09-23 00:37:30 +00:00
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struct video_device videodev;
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2009-04-03 21:45:27 +00:00
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struct v4l2_device v4l2_dev;
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2008-10-01 12:40:59 +00:00
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unsigned char *buffer;
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struct mutex lock; /* buffer locking */
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int curfreq;
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int stereo;
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int users;
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int muted;
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};
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2009-09-23 20:45:31 +00:00
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#define vdev_to_amradio(r) container_of(r, struct amradio_device, videodev)
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2008-10-01 12:40:59 +00:00
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/* USB Device ID List */
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static struct usb_device_id usb_amradio_device_table[] = {
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{USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT,
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USB_CLASS_HID, 0, 0) },
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, usb_amradio_device_table);
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/* USB subsystem interface */
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static struct usb_driver usb_amradio_driver = {
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2008-11-04 18:02:36 +00:00
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.name = MR800_DRIVER_NAME,
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2008-10-01 12:40:59 +00:00
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.probe = usb_amradio_probe,
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.disconnect = usb_amradio_disconnect,
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.suspend = usb_amradio_suspend,
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.resume = usb_amradio_resume,
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.reset_resume = usb_amradio_resume,
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.id_table = usb_amradio_device_table,
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2008-12-28 00:31:49 +00:00
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.supports_autosuspend = 0,
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2008-10-01 12:40:59 +00:00
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};
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2009-02-05 11:53:02 +00:00
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/* switch on/off the radio. Send 8 bytes to device */
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static int amradio_set_mute(struct amradio_device *radio, char argument)
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2008-10-01 12:40:59 +00:00
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{
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int retval;
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int size;
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2009-09-23 00:22:19 +00:00
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BUG_ON(!mutex_is_locked(&radio->lock));
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2008-10-01 12:40:59 +00:00
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radio->buffer[0] = 0x00;
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radio->buffer[1] = 0x55;
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radio->buffer[2] = 0xaa;
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radio->buffer[3] = 0x00;
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2009-02-05 11:53:02 +00:00
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radio->buffer[4] = AMRADIO_SET_MUTE;
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radio->buffer[5] = argument;
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2008-10-01 12:40:59 +00:00
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radio->buffer[6] = 0x00;
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radio->buffer[7] = 0x00;
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retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
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(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
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2009-09-23 00:22:19 +00:00
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if (retval < 0 || size != BUFFER_LENGTH)
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2008-10-01 12:40:59 +00:00
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return retval;
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2009-02-05 11:53:02 +00:00
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radio->muted = argument;
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2008-10-01 12:40:59 +00:00
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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 amradio_setfreq(struct amradio_device *radio, int freq)
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{
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int retval;
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int size;
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2009-02-05 11:54:17 +00:00
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unsigned short freq_send = 0x10 + (freq >> 3) / 25;
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2008-10-01 12:40:59 +00:00
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2009-09-23 00:22:19 +00:00
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BUG_ON(!mutex_is_locked(&radio->lock));
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2008-10-01 12:40:59 +00:00
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radio->buffer[0] = 0x00;
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radio->buffer[1] = 0x55;
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radio->buffer[2] = 0xaa;
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radio->buffer[3] = 0x03;
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2009-02-05 11:54:17 +00:00
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radio->buffer[4] = AMRADIO_SET_FREQ;
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2008-10-01 12:40:59 +00:00
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radio->buffer[5] = 0x00;
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radio->buffer[6] = 0x00;
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radio->buffer[7] = 0x08;
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retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
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(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
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2009-09-23 00:22:19 +00:00
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if (retval < 0 || size != BUFFER_LENGTH)
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2008-10-01 12:40:59 +00:00
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return retval;
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/* frequency is calculated from freq_send and placed in first 2 bytes */
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radio->buffer[0] = (freq_send >> 8) & 0xff;
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radio->buffer[1] = freq_send & 0xff;
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radio->buffer[2] = 0x01;
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radio->buffer[3] = 0x00;
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radio->buffer[4] = 0x00;
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/* 5 and 6 bytes of buffer already = 0x00 */
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radio->buffer[7] = 0x00;
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retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
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(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
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2009-02-05 11:56:07 +00:00
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return retval;
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}
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static int amradio_set_stereo(struct amradio_device *radio, char argument)
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{
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int retval;
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int size;
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2009-09-23 00:22:19 +00:00
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BUG_ON(!mutex_is_locked(&radio->lock));
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2009-02-05 11:56:07 +00:00
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radio->buffer[0] = 0x00;
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radio->buffer[1] = 0x55;
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radio->buffer[2] = 0xaa;
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radio->buffer[3] = 0x00;
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radio->buffer[4] = AMRADIO_SET_MONO;
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radio->buffer[5] = argument;
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radio->buffer[6] = 0x00;
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radio->buffer[7] = 0x00;
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retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
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(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
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if (retval < 0 || size != BUFFER_LENGTH) {
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radio->stereo = -1;
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return retval;
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}
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radio->stereo = 1;
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2008-10-01 12:40:59 +00:00
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return retval;
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}
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2009-02-05 11:58:31 +00:00
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/* Handle unplugging the device.
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* We call video_unregister_device in any case.
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* The last function called in this procedure is
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* usb_amradio_device_release.
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*/
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2008-10-01 12:40:59 +00:00
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static void usb_amradio_disconnect(struct usb_interface *intf)
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{
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struct amradio_device *radio = usb_get_intfdata(intf);
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2008-12-28 00:30:34 +00:00
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mutex_lock(&radio->lock);
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2009-09-23 20:52:17 +00:00
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radio->usbdev = NULL;
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2008-12-28 00:30:34 +00:00
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mutex_unlock(&radio->lock);
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2008-10-01 12:40:59 +00:00
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2008-12-28 00:30:34 +00:00
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usb_set_intfdata(intf, NULL);
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2009-09-23 00:37:30 +00:00
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video_unregister_device(&radio->videodev);
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2009-04-03 21:45:27 +00:00
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v4l2_device_disconnect(&radio->v4l2_dev);
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2008-10-01 12:40:59 +00:00
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}
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/* vidioc_querycap - query device capabilities */
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static int vidioc_querycap(struct file *file, void *priv,
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struct v4l2_capability *v)
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{
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2009-09-23 20:45:31 +00:00
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struct amradio_device *radio = file->private_data;
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2009-01-25 23:05:58 +00:00
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2008-10-01 12:40:59 +00:00
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strlcpy(v->driver, "radio-mr800", sizeof(v->driver));
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strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card));
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2009-01-25 23:05:58 +00:00
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usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));
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2008-10-01 12:40:59 +00:00
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v->version = RADIO_VERSION;
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v->capabilities = V4L2_CAP_TUNER;
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return 0;
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}
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/* vidioc_g_tuner - get tuner attributes */
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static int vidioc_g_tuner(struct file *file, void *priv,
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struct v4l2_tuner *v)
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{
|
2009-09-23 20:45:31 +00:00
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struct amradio_device *radio = file->private_data;
|
2009-02-05 11:56:07 +00:00
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int retval;
|
2008-10-01 12:40:59 +00:00
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|
2009-09-23 20:49:36 +00:00
|
|
|
if (v->index > 0)
|
|
|
|
return -EINVAL;
|
2008-10-01 12:40:59 +00:00
|
|
|
|
|
|
|
/* TODO: Add function which look is signal stereo or not
|
|
|
|
* amradio_getstat(radio);
|
|
|
|
*/
|
2009-02-05 11:56:07 +00:00
|
|
|
|
|
|
|
/* we call amradio_set_stereo to set radio->stereo
|
|
|
|
* Honestly, amradio_getstat should cover this in future and
|
|
|
|
* amradio_set_stereo shouldn't be here
|
|
|
|
*/
|
|
|
|
retval = amradio_set_stereo(radio, WANT_STEREO);
|
|
|
|
if (retval < 0)
|
2009-09-23 00:37:30 +00:00
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
2009-02-05 11:56:07 +00:00
|
|
|
"set stereo failed\n");
|
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
strcpy(v->name, "FM");
|
|
|
|
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; /* Can't get the signal strength, sad.. */
|
|
|
|
v->afc = 0; /* Don't know what is this */
|
2009-09-23 00:22:19 +00:00
|
|
|
|
|
|
|
return retval;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_s_tuner - set tuner attributes */
|
|
|
|
static int vidioc_s_tuner(struct file *file, void *priv,
|
|
|
|
struct v4l2_tuner *v)
|
|
|
|
{
|
2009-09-23 20:45:31 +00:00
|
|
|
struct amradio_device *radio = file->private_data;
|
2009-09-23 20:49:36 +00:00
|
|
|
int retval = -EINVAL;
|
2008-11-19 03:36:29 +00:00
|
|
|
|
2009-09-23 20:49:36 +00:00
|
|
|
if (v->index > 0)
|
|
|
|
return -EINVAL;
|
2009-02-05 11:56:07 +00:00
|
|
|
|
|
|
|
/* mono/stereo selector */
|
|
|
|
switch (v->audmode) {
|
|
|
|
case V4L2_TUNER_MODE_MONO:
|
|
|
|
retval = amradio_set_stereo(radio, WANT_MONO);
|
|
|
|
if (retval < 0)
|
2009-09-23 00:37:30 +00:00
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
2009-02-05 11:56:07 +00:00
|
|
|
"set mono failed\n");
|
|
|
|
break;
|
|
|
|
case V4L2_TUNER_MODE_STEREO:
|
|
|
|
retval = amradio_set_stereo(radio, WANT_STEREO);
|
|
|
|
if (retval < 0)
|
2009-09-23 00:37:30 +00:00
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
2009-02-05 11:56:07 +00:00
|
|
|
"set stereo failed\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2009-09-23 00:22:19 +00:00
|
|
|
return retval;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_s_frequency - set tuner radio frequency */
|
|
|
|
static int vidioc_s_frequency(struct file *file, void *priv,
|
|
|
|
struct v4l2_frequency *f)
|
|
|
|
{
|
2009-09-23 20:45:31 +00:00
|
|
|
struct amradio_device *radio = file->private_data;
|
2009-09-23 20:49:36 +00:00
|
|
|
int retval = 0;
|
2008-11-19 03:36:29 +00:00
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
radio->curfreq = f->frequency;
|
2009-02-05 11:57:19 +00:00
|
|
|
|
2009-02-05 11:48:43 +00:00
|
|
|
retval = amradio_setfreq(radio, radio->curfreq);
|
|
|
|
if (retval < 0)
|
2009-09-23 00:37:30 +00:00
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
2008-11-04 18:02:36 +00:00
|
|
|
"set frequency failed\n");
|
2009-09-23 00:22:19 +00:00
|
|
|
|
|
|
|
return retval;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_g_frequency - get tuner radio frequency */
|
|
|
|
static int vidioc_g_frequency(struct file *file, void *priv,
|
|
|
|
struct v4l2_frequency *f)
|
|
|
|
{
|
2009-09-23 20:45:31 +00:00
|
|
|
struct amradio_device *radio = file->private_data;
|
2008-11-19 03:36:29 +00:00
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
f->type = V4L2_TUNER_RADIO;
|
|
|
|
f->frequency = radio->curfreq;
|
2009-09-23 00:22:19 +00:00
|
|
|
|
2009-09-23 20:49:36 +00:00
|
|
|
return 0;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_queryctrl - enumerate control items */
|
|
|
|
static int vidioc_queryctrl(struct file *file, void *priv,
|
|
|
|
struct v4l2_queryctrl *qc)
|
|
|
|
{
|
2009-04-03 21:45:27 +00:00
|
|
|
switch (qc->id) {
|
|
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
|
|
return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
2009-04-03 21:45:27 +00:00
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_g_ctrl - get the value of a control */
|
|
|
|
static int vidioc_g_ctrl(struct file *file, void *priv,
|
|
|
|
struct v4l2_control *ctrl)
|
|
|
|
{
|
2009-09-23 20:45:31 +00:00
|
|
|
struct amradio_device *radio = file->private_data;
|
2008-11-19 03:36:29 +00:00
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
switch (ctrl->id) {
|
|
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
|
|
ctrl->value = radio->muted;
|
2009-09-23 20:49:36 +00:00
|
|
|
return 0;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
2009-09-23 00:22:19 +00:00
|
|
|
|
2009-09-23 20:49:36 +00:00
|
|
|
return -EINVAL;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_s_ctrl - set the value of a control */
|
|
|
|
static int vidioc_s_ctrl(struct file *file, void *priv,
|
|
|
|
struct v4l2_control *ctrl)
|
|
|
|
{
|
2009-09-23 20:45:31 +00:00
|
|
|
struct amradio_device *radio = file->private_data;
|
2009-09-23 00:22:19 +00:00
|
|
|
int retval = -EINVAL;
|
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
switch (ctrl->id) {
|
|
|
|
case V4L2_CID_AUDIO_MUTE:
|
|
|
|
if (ctrl->value) {
|
2009-02-05 11:53:02 +00:00
|
|
|
retval = amradio_set_mute(radio, AMRADIO_STOP);
|
2009-02-05 11:48:43 +00:00
|
|
|
if (retval < 0) {
|
2009-09-23 00:37:30 +00:00
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
2008-11-04 18:02:36 +00:00
|
|
|
"amradio_stop failed\n");
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
} else {
|
2009-02-05 11:53:02 +00:00
|
|
|
retval = amradio_set_mute(radio, AMRADIO_START);
|
2009-02-05 11:48:43 +00:00
|
|
|
if (retval < 0) {
|
2009-09-23 00:37:30 +00:00
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
2008-11-04 18:02:36 +00:00
|
|
|
"amradio_start failed\n");
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
}
|
2009-09-23 00:22:19 +00:00
|
|
|
break;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
2009-09-23 00:22:19 +00:00
|
|
|
|
|
|
|
return retval;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_g_audio - get audio attributes */
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_s_audio - set audio attributes */
|
|
|
|
static int vidioc_s_audio(struct file *file, void *priv,
|
|
|
|
struct v4l2_audio *a)
|
|
|
|
{
|
|
|
|
if (a->index != 0)
|
|
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_g_input - get input */
|
|
|
|
static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
|
|
|
|
{
|
|
|
|
*i = 0;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_s_input - set input */
|
|
|
|
static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
|
|
|
|
{
|
|
|
|
if (i != 0)
|
|
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* open device - amradio_start() and amradio_setfreq() */
|
2008-12-30 09:58:20 +00:00
|
|
|
static int usb_amradio_open(struct file *file)
|
2008-10-01 12:40:59 +00:00
|
|
|
{
|
2009-09-23 20:45:31 +00:00
|
|
|
struct amradio_device *radio = vdev_to_amradio(video_devdata(file));
|
2009-09-23 00:22:19 +00:00
|
|
|
int retval = 0;
|
2008-10-01 12:40:59 +00:00
|
|
|
|
2009-09-23 00:22:19 +00:00
|
|
|
mutex_lock(&radio->lock);
|
|
|
|
|
2009-09-23 20:52:17 +00:00
|
|
|
if (!radio->usbdev) {
|
2009-09-23 00:22:19 +00:00
|
|
|
retval = -EIO;
|
|
|
|
goto unlock;
|
|
|
|
}
|
2008-10-20 02:56:23 +00:00
|
|
|
|
2009-09-23 20:45:31 +00:00
|
|
|
file->private_data = radio;
|
2008-10-01 12:40:59 +00:00
|
|
|
radio->users = 1;
|
|
|
|
radio->muted = 1;
|
|
|
|
|
2009-02-05 11:53:02 +00:00
|
|
|
retval = amradio_set_mute(radio, AMRADIO_START);
|
2009-02-05 11:48:43 +00:00
|
|
|
if (retval < 0) {
|
2009-09-23 00:37:30 +00:00
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
2008-11-04 18:02:36 +00:00
|
|
|
"radio did not start up properly\n");
|
2008-10-01 12:40:59 +00:00
|
|
|
radio->users = 0;
|
2009-09-23 00:22:19 +00:00
|
|
|
goto unlock;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
2009-02-05 11:48:43 +00:00
|
|
|
|
2009-02-05 11:56:07 +00:00
|
|
|
retval = amradio_set_stereo(radio, WANT_STEREO);
|
|
|
|
if (retval < 0)
|
2009-09-23 00:37:30 +00:00
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
2009-02-05 11:56:07 +00:00
|
|
|
"set stereo failed\n");
|
|
|
|
|
2009-02-05 11:48:43 +00:00
|
|
|
retval = amradio_setfreq(radio, radio->curfreq);
|
|
|
|
if (retval < 0)
|
2009-09-23 00:37:30 +00:00
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
2008-11-04 18:02:36 +00:00
|
|
|
"set frequency failed\n");
|
2008-10-20 02:56:23 +00:00
|
|
|
|
2009-09-23 00:22:19 +00:00
|
|
|
unlock:
|
|
|
|
mutex_unlock(&radio->lock);
|
|
|
|
return retval;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
2008-12-28 00:30:34 +00:00
|
|
|
/*close device */
|
2008-12-30 09:58:20 +00:00
|
|
|
static int usb_amradio_close(struct file *file)
|
2008-10-01 12:40:59 +00:00
|
|
|
{
|
2009-09-23 20:45:31 +00:00
|
|
|
struct amradio_device *radio = file->private_data;
|
2009-09-23 00:22:19 +00:00
|
|
|
int retval = 0;
|
2008-11-19 03:36:29 +00:00
|
|
|
|
2009-02-05 11:57:19 +00:00
|
|
|
mutex_lock(&radio->lock);
|
2009-09-23 00:22:19 +00:00
|
|
|
|
2009-09-23 20:52:17 +00:00
|
|
|
if (!radio->usbdev) {
|
2009-09-23 00:22:19 +00:00
|
|
|
retval = -EIO;
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
radio->users = 0;
|
2008-11-19 03:36:29 +00:00
|
|
|
|
2009-09-23 20:52:17 +00:00
|
|
|
retval = amradio_set_mute(radio, AMRADIO_STOP);
|
|
|
|
if (retval < 0)
|
|
|
|
amradio_dev_warn(&radio->videodev.dev,
|
|
|
|
"amradio_stop failed\n");
|
2008-11-19 03:36:29 +00:00
|
|
|
|
2009-09-23 00:22:19 +00:00
|
|
|
unlock:
|
|
|
|
mutex_unlock(&radio->lock);
|
|
|
|
return retval;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
2009-09-23 20:49:36 +00:00
|
|
|
static long usb_amradio_ioctl(struct file *file, unsigned int cmd,
|
|
|
|
unsigned long arg)
|
|
|
|
{
|
|
|
|
struct amradio_device *radio = file->private_data;
|
|
|
|
long retval = 0;
|
|
|
|
|
|
|
|
mutex_lock(&radio->lock);
|
|
|
|
|
2009-09-23 20:52:17 +00:00
|
|
|
if (!radio->usbdev) {
|
2009-09-23 20:49:36 +00:00
|
|
|
retval = -EIO;
|
|
|
|
goto unlock;
|
|
|
|
}
|
|
|
|
|
|
|
|
retval = video_ioctl2(file, cmd, arg);
|
|
|
|
|
|
|
|
unlock:
|
|
|
|
mutex_unlock(&radio->lock);
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
/* Suspend device - stop device. Need to be checked and fixed */
|
|
|
|
static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message)
|
|
|
|
{
|
|
|
|
struct amradio_device *radio = usb_get_intfdata(intf);
|
2009-02-05 11:48:43 +00:00
|
|
|
int retval;
|
2008-10-01 12:40:59 +00:00
|
|
|
|
2009-09-23 00:22:19 +00:00
|
|
|
mutex_lock(&radio->lock);
|
|
|
|
|
2009-02-05 11:53:02 +00:00
|
|
|
retval = amradio_set_mute(radio, AMRADIO_STOP);
|
2009-02-05 11:48:43 +00:00
|
|
|
if (retval < 0)
|
2008-11-04 18:02:36 +00:00
|
|
|
dev_warn(&intf->dev, "amradio_stop failed\n");
|
2008-10-01 12:40:59 +00:00
|
|
|
|
2008-11-04 18:02:36 +00:00
|
|
|
dev_info(&intf->dev, "going into suspend..\n");
|
2008-10-01 12:40:59 +00:00
|
|
|
|
2009-09-23 00:22:19 +00:00
|
|
|
mutex_unlock(&radio->lock);
|
2008-10-01 12:40:59 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Resume device - start device. Need to be checked and fixed */
|
|
|
|
static int usb_amradio_resume(struct usb_interface *intf)
|
|
|
|
{
|
|
|
|
struct amradio_device *radio = usb_get_intfdata(intf);
|
2009-02-05 11:48:43 +00:00
|
|
|
int retval;
|
2008-10-01 12:40:59 +00:00
|
|
|
|
2009-09-23 00:22:19 +00:00
|
|
|
mutex_lock(&radio->lock);
|
|
|
|
|
2009-02-05 11:53:02 +00:00
|
|
|
retval = amradio_set_mute(radio, AMRADIO_START);
|
2009-02-05 11:48:43 +00:00
|
|
|
if (retval < 0)
|
2008-11-04 18:02:36 +00:00
|
|
|
dev_warn(&intf->dev, "amradio_start failed\n");
|
2008-10-01 12:40:59 +00:00
|
|
|
|
2008-11-04 18:02:36 +00:00
|
|
|
dev_info(&intf->dev, "coming out of suspend..\n");
|
2008-10-01 12:40:59 +00:00
|
|
|
|
2009-09-23 00:22:19 +00:00
|
|
|
mutex_unlock(&radio->lock);
|
2008-10-01 12:40:59 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* File system interface */
|
2008-12-30 09:58:20 +00:00
|
|
|
static const struct v4l2_file_operations usb_amradio_fops = {
|
2008-10-01 12:40:59 +00:00
|
|
|
.owner = THIS_MODULE,
|
|
|
|
.open = usb_amradio_open,
|
|
|
|
.release = usb_amradio_close,
|
2009-09-23 20:49:36 +00:00
|
|
|
.ioctl = usb_amradio_ioctl,
|
2008-10-01 12:40:59 +00:00
|
|
|
};
|
|
|
|
|
|
|
|
static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = {
|
|
|
|
.vidioc_querycap = vidioc_querycap,
|
|
|
|
.vidioc_g_tuner = vidioc_g_tuner,
|
|
|
|
.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,
|
|
|
|
};
|
|
|
|
|
2009-04-03 21:45:27 +00:00
|
|
|
static void usb_amradio_video_device_release(struct video_device *videodev)
|
2008-12-28 00:30:34 +00:00
|
|
|
{
|
2009-09-23 20:45:31 +00:00
|
|
|
struct amradio_device *radio = vdev_to_amradio(videodev);
|
2008-12-28 00:30:34 +00:00
|
|
|
|
2009-04-03 21:45:27 +00:00
|
|
|
v4l2_device_unregister(&radio->v4l2_dev);
|
|
|
|
|
2008-12-28 00:30:34 +00:00
|
|
|
/* free rest memory */
|
|
|
|
kfree(radio->buffer);
|
|
|
|
kfree(radio);
|
|
|
|
}
|
|
|
|
|
2009-02-05 11:48:43 +00:00
|
|
|
/* check if the device is present and register with v4l and usb if it is */
|
2008-10-01 12:40:59 +00:00
|
|
|
static int usb_amradio_probe(struct usb_interface *intf,
|
|
|
|
const struct usb_device_id *id)
|
|
|
|
{
|
|
|
|
struct amradio_device *radio;
|
2009-09-23 00:43:19 +00:00
|
|
|
int retval = 0;
|
2008-10-01 12:40:59 +00:00
|
|
|
|
2009-04-03 21:45:27 +00:00
|
|
|
radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL);
|
2008-10-01 12:40:59 +00:00
|
|
|
|
2009-02-05 11:51:51 +00:00
|
|
|
if (!radio) {
|
|
|
|
dev_err(&intf->dev, "kmalloc for amradio_device failed\n");
|
2009-09-23 00:43:19 +00:00
|
|
|
retval = -ENOMEM;
|
|
|
|
goto err;
|
2009-02-05 11:51:51 +00:00
|
|
|
}
|
2008-10-01 12:40:59 +00:00
|
|
|
|
|
|
|
radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);
|
|
|
|
|
2009-02-05 11:51:51 +00:00
|
|
|
if (!radio->buffer) {
|
|
|
|
dev_err(&intf->dev, "kmalloc for radio->buffer failed\n");
|
2009-09-23 00:43:19 +00:00
|
|
|
retval = -ENOMEM;
|
|
|
|
goto err_nobuf;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
2009-09-23 00:48:43 +00:00
|
|
|
retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev);
|
2009-04-03 21:45:27 +00:00
|
|
|
if (retval < 0) {
|
|
|
|
dev_err(&intf->dev, "couldn't register v4l2_device\n");
|
2009-09-23 00:43:19 +00:00
|
|
|
goto err_v4l2;
|
2009-04-03 21:45:27 +00:00
|
|
|
}
|
|
|
|
|
2009-09-23 00:48:43 +00:00
|
|
|
strlcpy(radio->videodev.name, radio->v4l2_dev.name,
|
2009-09-23 00:37:30 +00:00
|
|
|
sizeof(radio->videodev.name));
|
2009-09-23 00:48:43 +00:00
|
|
|
radio->videodev.v4l2_dev = &radio->v4l2_dev;
|
2009-09-23 00:37:30 +00:00
|
|
|
radio->videodev.fops = &usb_amradio_fops;
|
|
|
|
radio->videodev.ioctl_ops = &usb_amradio_ioctl_ops;
|
|
|
|
radio->videodev.release = usb_amradio_video_device_release;
|
2008-10-01 12:40:59 +00:00
|
|
|
|
|
|
|
radio->users = 0;
|
|
|
|
radio->usbdev = interface_to_usbdev(intf);
|
|
|
|
radio->curfreq = 95.16 * FREQ_MUL;
|
2009-02-05 11:56:07 +00:00
|
|
|
radio->stereo = -1;
|
2008-10-01 12:40:59 +00:00
|
|
|
|
|
|
|
mutex_init(&radio->lock);
|
|
|
|
|
2009-09-23 00:37:30 +00:00
|
|
|
video_set_drvdata(&radio->videodev, radio);
|
2009-04-03 21:45:27 +00:00
|
|
|
|
2009-09-23 00:37:30 +00:00
|
|
|
retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO,
|
|
|
|
radio_nr);
|
2009-02-05 11:48:43 +00:00
|
|
|
if (retval < 0) {
|
2009-02-05 11:49:58 +00:00
|
|
|
dev_err(&intf->dev, "could not register video device\n");
|
2009-09-23 00:43:19 +00:00
|
|
|
goto err_vdev;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
usb_set_intfdata(intf, radio);
|
|
|
|
return 0;
|
2009-09-23 00:43:19 +00:00
|
|
|
|
|
|
|
err_vdev:
|
2009-09-23 00:48:43 +00:00
|
|
|
v4l2_device_unregister(&radio->v4l2_dev);
|
2009-09-23 00:43:19 +00:00
|
|
|
err_v4l2:
|
|
|
|
kfree(radio->buffer);
|
|
|
|
err_nobuf:
|
|
|
|
kfree(radio);
|
|
|
|
err:
|
|
|
|
return retval;
|
2008-10-01 12:40:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int __init amradio_init(void)
|
|
|
|
{
|
|
|
|
int retval = usb_register(&usb_amradio_driver);
|
|
|
|
|
2008-11-04 18:02:36 +00:00
|
|
|
pr_info(KBUILD_MODNAME
|
|
|
|
": version " DRIVER_VERSION " " DRIVER_DESC "\n");
|
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
if (retval)
|
2008-11-04 18:02:36 +00:00
|
|
|
pr_err(KBUILD_MODNAME
|
|
|
|
": usb_register failed. Error number %d\n", retval);
|
|
|
|
|
2008-10-01 12:40:59 +00:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit amradio_exit(void)
|
|
|
|
{
|
|
|
|
usb_deregister(&usb_amradio_driver);
|
|
|
|
}
|
|
|
|
|
|
|
|
module_init(amradio_init);
|
|
|
|
module_exit(amradio_exit);
|
|
|
|
|