2008-10-01 20:40:59 +08:00
|
|
|
/*
|
|
|
|
* A driver for the AverMedia MR 800 USB FM radio. This device plugs
|
|
|
|
* into both the USB and an analog audio input, so this thing
|
|
|
|
* only deals with initialization and frequency setting, the
|
|
|
|
* audio data has to be handled by a sound driver.
|
|
|
|
*
|
|
|
|
* Copyright (c) 2008 Alexey Klimov <klimov.linux@gmail.com>
|
|
|
|
*
|
|
|
|
* 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.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/*
|
2009-02-05 19:58:31 +08:00
|
|
|
* Big thanks to authors and contributors of dsbr100.c and radio-si470x.c
|
2008-10-01 20:40:59 +08:00
|
|
|
*
|
|
|
|
* When work was looked pretty good, i discover this:
|
|
|
|
* http://av-usbradio.sourceforge.net/index.php
|
|
|
|
* http://sourceforge.net/projects/av-usbradio/
|
|
|
|
* Latest release of theirs project was in 2005.
|
tree-wide: fix assorted typos all over the place
That is "success", "unknown", "through", "performance", "[re|un]mapping"
, "access", "default", "reasonable", "[con]currently", "temperature"
, "channel", "[un]used", "application", "example","hierarchy", "therefore"
, "[over|under]flow", "contiguous", "threshold", "enough" and others.
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2009-11-14 23:09:05 +08:00
|
|
|
* Probably, this driver could be improved through using their
|
2008-10-01 20:40:59 +08:00
|
|
|
* achievements (specifications given).
|
2009-02-05 19:58:31 +08:00
|
|
|
* Also, Faidon Liambotis <paravoid@debian.org> wrote nice driver for this radio
|
|
|
|
* in 2007. He allowed to use his driver to improve current mr800 radio driver.
|
2014-06-09 23:55:25 +08:00
|
|
|
* http://www.spinics.net/lists/linux-usb-devel/msg10109.html
|
2008-10-01 20:40:59 +08:00
|
|
|
*
|
|
|
|
* Version 0.01: First working version.
|
2018-01-04 19:47:28 +08:00
|
|
|
* It's required to blacklist AverMedia USB Radio
|
|
|
|
* in usbhid/hid-quirks.c
|
2009-02-05 19:58:31 +08:00
|
|
|
* Version 0.10: A lot of cleanups and fixes: unpluging the device,
|
2018-01-04 19:47:28 +08:00
|
|
|
* few mutex locks were added, codinstyle issues, etc.
|
|
|
|
* Added stereo support. Thanks to
|
|
|
|
* Douglas Schilling Landgraf <dougsland@gmail.com> and
|
|
|
|
* David Ellingsworth <david@identd.dyndns.org>
|
|
|
|
* for discussion, help and support.
|
2009-04-04 05:45:27 +08:00
|
|
|
* Version 0.11: Converted to v4l2_device.
|
2008-10-01 20:40:59 +08:00
|
|
|
*
|
|
|
|
* Many things to do:
|
2018-01-04 19:47:28 +08:00
|
|
|
* - Correct power management of device (suspend & resume)
|
|
|
|
* - Add code for scanning and smooth tuning
|
|
|
|
* - Add code for sensitivity value
|
|
|
|
* - Correct mistakes
|
|
|
|
* - In Japan another FREQ_MIN and FREQ_MAX
|
2008-10-01 20:40:59 +08:00
|
|
|
*/
|
|
|
|
|
|
|
|
/* kernel includes */
|
|
|
|
#include <linux/kernel.h>
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <linux/init.h>
|
|
|
|
#include <linux/slab.h>
|
|
|
|
#include <linux/input.h>
|
|
|
|
#include <linux/videodev2.h>
|
2009-04-04 05:45:27 +08:00
|
|
|
#include <media/v4l2-device.h>
|
2008-10-01 20:40:59 +08:00
|
|
|
#include <media/v4l2-ioctl.h>
|
2012-04-27 23:30:40 +08:00
|
|
|
#include <media/v4l2-ctrls.h>
|
|
|
|
#include <media/v4l2-event.h>
|
2008-10-01 20:40:59 +08:00
|
|
|
#include <linux/usb.h>
|
2009-05-13 04:39:27 +08:00
|
|
|
#include <linux/mutex.h>
|
2008-10-01 20:40:59 +08:00
|
|
|
|
|
|
|
/* driver and module definitions */
|
|
|
|
#define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>"
|
|
|
|
#define DRIVER_DESC "AverMedia MR 800 USB FM radio driver"
|
2011-06-25 21:15:42 +08:00
|
|
|
#define DRIVER_VERSION "0.1.2"
|
2008-10-01 20:40:59 +08:00
|
|
|
|
|
|
|
MODULE_AUTHOR(DRIVER_AUTHOR);
|
|
|
|
MODULE_DESCRIPTION(DRIVER_DESC);
|
|
|
|
MODULE_LICENSE("GPL");
|
2011-06-25 21:15:42 +08:00
|
|
|
MODULE_VERSION(DRIVER_VERSION);
|
2008-10-01 20:40:59 +08:00
|
|
|
|
|
|
|
#define USB_AMRADIO_VENDOR 0x07ca
|
|
|
|
#define USB_AMRADIO_PRODUCT 0xb800
|
|
|
|
|
2008-11-05 02:02:36 +08:00
|
|
|
/* dev_warn macro with driver name */
|
|
|
|
#define MR800_DRIVER_NAME "radio-mr800"
|
|
|
|
#define amradio_dev_warn(dev, fmt, arg...) \
|
|
|
|
dev_warn(dev, MR800_DRIVER_NAME " - " fmt, ##arg)
|
|
|
|
|
2009-09-24 05:13:50 +08:00
|
|
|
#define amradio_dev_err(dev, fmt, arg...) \
|
|
|
|
dev_err(dev, MR800_DRIVER_NAME " - " fmt, ##arg)
|
|
|
|
|
2008-10-01 20:40:59 +08:00
|
|
|
/* Probably USB_TIMEOUT should be modified in module parameter */
|
|
|
|
#define BUFFER_LENGTH 8
|
|
|
|
#define USB_TIMEOUT 500
|
|
|
|
|
|
|
|
/* Frequency limits in MHz -- these are European values. For Japanese
|
|
|
|
devices, that would be 76 and 91. */
|
|
|
|
#define FREQ_MIN 87.5
|
|
|
|
#define FREQ_MAX 108.0
|
|
|
|
#define FREQ_MUL 16000
|
|
|
|
|
2009-02-05 19:53:02 +08:00
|
|
|
/*
|
|
|
|
* Commands that device should understand
|
2011-03-31 09:57:33 +08:00
|
|
|
* List isn't full and will be updated with implementation of new functions
|
2009-02-05 19:53:02 +08:00
|
|
|
*/
|
2009-02-05 19:54:17 +08:00
|
|
|
#define AMRADIO_SET_FREQ 0xa4
|
2012-04-28 05:39:37 +08:00
|
|
|
#define AMRADIO_GET_READY_FLAG 0xa5
|
2012-04-28 00:28:34 +08:00
|
|
|
#define AMRADIO_GET_SIGNAL 0xa7
|
2012-04-28 05:39:37 +08:00
|
|
|
#define AMRADIO_GET_FREQ 0xa8
|
|
|
|
#define AMRADIO_SET_SEARCH_UP 0xa9
|
|
|
|
#define AMRADIO_SET_SEARCH_DOWN 0xaa
|
2009-02-05 19:53:02 +08:00
|
|
|
#define AMRADIO_SET_MUTE 0xab
|
2012-04-28 05:39:37 +08:00
|
|
|
#define AMRADIO_SET_RIGHT_MUTE 0xac
|
|
|
|
#define AMRADIO_SET_LEFT_MUTE 0xad
|
2009-02-05 19:56:07 +08:00
|
|
|
#define AMRADIO_SET_MONO 0xae
|
2012-04-28 05:39:37 +08:00
|
|
|
#define AMRADIO_SET_SEARCH_LVL 0xb0
|
|
|
|
#define AMRADIO_STOP_SEARCH 0xb1
|
2009-02-05 19:53:02 +08:00
|
|
|
|
2009-02-05 19:56:07 +08:00
|
|
|
/* Comfortable defines for amradio_set_stereo */
|
|
|
|
#define WANT_STEREO 0x00
|
|
|
|
#define WANT_MONO 0x01
|
|
|
|
|
2008-10-01 20:40:59 +08:00
|
|
|
/* module parameter */
|
|
|
|
static int radio_nr = -1;
|
|
|
|
module_param(radio_nr, int, 0);
|
|
|
|
MODULE_PARM_DESC(radio_nr, "Radio Nr");
|
|
|
|
|
|
|
|
/* Data for one (physical) device */
|
|
|
|
struct amradio_device {
|
|
|
|
/* reference to USB and video device */
|
|
|
|
struct usb_device *usbdev;
|
2009-11-10 06:09:49 +08:00
|
|
|
struct usb_interface *intf;
|
2012-04-27 23:30:40 +08:00
|
|
|
struct video_device vdev;
|
2009-04-04 05:45:27 +08:00
|
|
|
struct v4l2_device v4l2_dev;
|
2012-04-27 23:30:40 +08:00
|
|
|
struct v4l2_ctrl_handler hdl;
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2012-04-28 05:39:37 +08:00
|
|
|
u8 *buffer;
|
2008-10-01 20:40:59 +08:00
|
|
|
struct mutex lock; /* buffer locking */
|
|
|
|
int curfreq;
|
|
|
|
int stereo;
|
|
|
|
int muted;
|
|
|
|
};
|
|
|
|
|
2010-05-02 16:36:32 +08:00
|
|
|
static inline struct amradio_device *to_amradio_dev(struct v4l2_device *v4l2_dev)
|
|
|
|
{
|
|
|
|
return container_of(v4l2_dev, struct amradio_device, v4l2_dev);
|
|
|
|
}
|
2009-09-24 04:45:31 +08:00
|
|
|
|
2012-04-28 05:39:37 +08:00
|
|
|
static int amradio_send_cmd(struct amradio_device *radio, u8 cmd, u8 arg,
|
|
|
|
u8 *extra, u8 extralen, bool reply)
|
2008-10-01 20:40:59 +08:00
|
|
|
{
|
|
|
|
int retval;
|
|
|
|
int size;
|
|
|
|
|
|
|
|
radio->buffer[0] = 0x00;
|
|
|
|
radio->buffer[1] = 0x55;
|
|
|
|
radio->buffer[2] = 0xaa;
|
2012-04-28 05:39:37 +08:00
|
|
|
radio->buffer[3] = extralen;
|
|
|
|
radio->buffer[4] = cmd;
|
|
|
|
radio->buffer[5] = arg;
|
2008-10-01 20:40:59 +08:00
|
|
|
radio->buffer[6] = 0x00;
|
2012-04-28 05:39:37 +08:00
|
|
|
radio->buffer[7] = extra || reply ? 8 : 0;
|
2008-10-01 20:40:59 +08:00
|
|
|
|
|
|
|
retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
|
2012-04-28 05:39:37 +08:00
|
|
|
radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT);
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2009-02-05 20:00:03 +08:00
|
|
|
if (retval < 0 || size != BUFFER_LENGTH) {
|
2012-04-28 05:39:37 +08:00
|
|
|
if (video_is_registered(&radio->vdev))
|
|
|
|
amradio_dev_warn(&radio->vdev.dev,
|
|
|
|
"cmd %02x failed\n", cmd);
|
|
|
|
return retval ? retval : -EIO;
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
2012-04-28 05:39:37 +08:00
|
|
|
if (!extra && !reply)
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
if (extra) {
|
|
|
|
memcpy(radio->buffer, extra, extralen);
|
|
|
|
memset(radio->buffer + extralen, 0, 8 - extralen);
|
|
|
|
retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
|
|
|
|
radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT);
|
|
|
|
} else {
|
|
|
|
memset(radio->buffer, 0, 8);
|
|
|
|
retval = usb_bulk_msg(radio->usbdev, usb_rcvbulkpipe(radio->usbdev, 0x81),
|
|
|
|
radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT);
|
|
|
|
}
|
|
|
|
if (retval == 0 && size == BUFFER_LENGTH)
|
|
|
|
return 0;
|
|
|
|
if (video_is_registered(&radio->vdev) && cmd != AMRADIO_GET_READY_FLAG)
|
|
|
|
amradio_dev_warn(&radio->vdev.dev, "follow-up to cmd %02x failed\n", cmd);
|
|
|
|
return retval ? retval : -EIO;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* switch on/off the radio. Send 8 bytes to device */
|
|
|
|
static int amradio_set_mute(struct amradio_device *radio, bool mute)
|
|
|
|
{
|
|
|
|
int ret = amradio_send_cmd(radio,
|
|
|
|
AMRADIO_SET_MUTE, mute, NULL, 0, false);
|
|
|
|
|
|
|
|
if (!ret)
|
|
|
|
radio->muted = mute;
|
|
|
|
return ret;
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
|
2012-04-28 05:39:37 +08:00
|
|
|
static int amradio_set_freq(struct amradio_device *radio, int freq)
|
2008-10-01 20:40:59 +08:00
|
|
|
{
|
2013-03-15 05:12:06 +08:00
|
|
|
unsigned short freq_send;
|
2012-04-28 05:39:37 +08:00
|
|
|
u8 buf[3];
|
2008-10-01 20:40:59 +08:00
|
|
|
int retval;
|
|
|
|
|
2013-03-15 05:12:06 +08:00
|
|
|
/* we need to be sure that frequency isn't out of range */
|
|
|
|
freq = clamp_t(unsigned, freq, FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL);
|
|
|
|
freq_send = 0x10 + (freq >> 3) / 25;
|
|
|
|
|
2008-10-01 20:40:59 +08:00
|
|
|
/* frequency is calculated from freq_send and placed in first 2 bytes */
|
2012-04-28 05:39:37 +08:00
|
|
|
buf[0] = (freq_send >> 8) & 0xff;
|
|
|
|
buf[1] = freq_send & 0xff;
|
|
|
|
buf[2] = 0x01;
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2012-04-28 05:39:37 +08:00
|
|
|
retval = amradio_send_cmd(radio, AMRADIO_SET_FREQ, 0, buf, 3, false);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
radio->curfreq = freq;
|
|
|
|
msleep(40);
|
|
|
|
return 0;
|
2009-02-05 19:56:07 +08:00
|
|
|
}
|
|
|
|
|
2012-04-28 05:39:37 +08:00
|
|
|
static int amradio_set_stereo(struct amradio_device *radio, bool stereo)
|
2009-02-05 19:56:07 +08:00
|
|
|
{
|
2012-04-28 05:39:37 +08:00
|
|
|
int ret = amradio_send_cmd(radio,
|
|
|
|
AMRADIO_SET_MONO, !stereo, NULL, 0, false);
|
2009-02-05 19:56:07 +08:00
|
|
|
|
2012-04-28 05:39:37 +08:00
|
|
|
if (!ret)
|
|
|
|
radio->stereo = stereo;
|
|
|
|
return ret;
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
|
|
|
|
2012-04-28 00:28:34 +08:00
|
|
|
static int amradio_get_stat(struct amradio_device *radio, bool *is_stereo, u32 *signal)
|
|
|
|
{
|
2012-04-28 05:39:37 +08:00
|
|
|
int ret = amradio_send_cmd(radio,
|
|
|
|
AMRADIO_GET_SIGNAL, 0, NULL, 0, true);
|
2012-04-28 00:28:34 +08:00
|
|
|
|
2012-04-28 05:39:37 +08:00
|
|
|
if (ret)
|
|
|
|
return ret;
|
2012-04-28 00:28:34 +08:00
|
|
|
*is_stereo = radio->buffer[2] >> 7;
|
|
|
|
*signal = (radio->buffer[3] & 0xf0) << 8;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-02-05 19:58:31 +08:00
|
|
|
/* Handle unplugging the device.
|
|
|
|
* We call video_unregister_device in any case.
|
|
|
|
* The last function called in this procedure is
|
|
|
|
* usb_amradio_device_release.
|
|
|
|
*/
|
2008-10-01 20:40:59 +08:00
|
|
|
static void usb_amradio_disconnect(struct usb_interface *intf)
|
|
|
|
{
|
2010-05-02 16:36:32 +08:00
|
|
|
struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf));
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2008-12-28 08:30:34 +08:00
|
|
|
mutex_lock(&radio->lock);
|
2012-04-27 23:30:40 +08:00
|
|
|
video_unregister_device(&radio->vdev);
|
2012-04-28 05:39:37 +08:00
|
|
|
amradio_set_mute(radio, true);
|
|
|
|
usb_set_intfdata(intf, NULL);
|
2009-04-04 05:45:27 +08:00
|
|
|
v4l2_device_disconnect(&radio->v4l2_dev);
|
2010-10-17 20:26:18 +08:00
|
|
|
mutex_unlock(&radio->lock);
|
2012-04-27 23:30:40 +08:00
|
|
|
v4l2_device_put(&radio->v4l2_dev);
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_querycap - query device capabilities */
|
|
|
|
static int vidioc_querycap(struct file *file, void *priv,
|
|
|
|
struct v4l2_capability *v)
|
|
|
|
{
|
2012-04-27 23:30:40 +08:00
|
|
|
struct amradio_device *radio = video_drvdata(file);
|
2009-01-26 07:05:58 +08:00
|
|
|
|
2018-09-10 20:19:14 +08:00
|
|
|
strscpy(v->driver, "radio-mr800", sizeof(v->driver));
|
|
|
|
strscpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card));
|
2009-01-26 07:05:58 +08:00
|
|
|
usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));
|
2012-04-28 05:39:37 +08:00
|
|
|
v->device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER |
|
|
|
|
V4L2_CAP_HW_FREQ_SEEK;
|
2012-04-27 23:30:40 +08:00
|
|
|
v->capabilities = v->device_caps | V4L2_CAP_DEVICE_CAPS;
|
2008-10-01 20:40:59 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_g_tuner - get tuner attributes */
|
|
|
|
static int vidioc_g_tuner(struct file *file, void *priv,
|
|
|
|
struct v4l2_tuner *v)
|
|
|
|
{
|
2012-04-27 23:30:40 +08:00
|
|
|
struct amradio_device *radio = video_drvdata(file);
|
2012-04-28 00:28:34 +08:00
|
|
|
bool is_stereo = false;
|
|
|
|
int retval;
|
2008-10-01 20:40:59 +08:00
|
|
|
|
|
|
|
if (v->index > 0)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2012-04-28 00:28:34 +08:00
|
|
|
v->signal = 0;
|
|
|
|
retval = amradio_get_stat(radio, &is_stereo, &v->signal);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
|
2018-09-11 04:20:42 +08:00
|
|
|
strscpy(v->name, "FM", sizeof(v->name));
|
2008-10-01 20:40:59 +08:00
|
|
|
v->type = V4L2_TUNER_RADIO;
|
|
|
|
v->rangelow = FREQ_MIN * FREQ_MUL;
|
|
|
|
v->rangehigh = FREQ_MAX * FREQ_MUL;
|
2012-05-27 18:25:06 +08:00
|
|
|
v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |
|
|
|
|
V4L2_TUNER_CAP_HWSEEK_WRAP;
|
2012-04-28 00:28:34 +08:00
|
|
|
v->rxsubchans = is_stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
|
2012-04-27 23:30:40 +08:00
|
|
|
v->audmode = radio->stereo ?
|
|
|
|
V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO;
|
|
|
|
return 0;
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_s_tuner - set tuner attributes */
|
|
|
|
static int vidioc_s_tuner(struct file *file, void *priv,
|
2013-03-15 17:10:06 +08:00
|
|
|
const struct v4l2_tuner *v)
|
2008-10-01 20:40:59 +08:00
|
|
|
{
|
2012-04-27 23:30:40 +08:00
|
|
|
struct amradio_device *radio = video_drvdata(file);
|
2008-11-19 11:36:29 +08:00
|
|
|
|
2008-10-01 20:40:59 +08:00
|
|
|
if (v->index > 0)
|
|
|
|
return -EINVAL;
|
2009-02-05 19:56:07 +08:00
|
|
|
|
|
|
|
/* mono/stereo selector */
|
|
|
|
switch (v->audmode) {
|
|
|
|
case V4L2_TUNER_MODE_MONO:
|
2012-04-27 23:30:40 +08:00
|
|
|
return amradio_set_stereo(radio, WANT_MONO);
|
|
|
|
default:
|
|
|
|
return amradio_set_stereo(radio, WANT_STEREO);
|
2009-02-05 19:56:07 +08:00
|
|
|
}
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_s_frequency - set tuner radio frequency */
|
|
|
|
static int vidioc_s_frequency(struct file *file, void *priv,
|
2013-03-19 15:09:26 +08:00
|
|
|
const struct v4l2_frequency *f)
|
2008-10-01 20:40:59 +08:00
|
|
|
{
|
2012-04-27 23:30:40 +08:00
|
|
|
struct amradio_device *radio = video_drvdata(file);
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
if (f->tuner != 0)
|
2009-11-27 15:33:25 +08:00
|
|
|
return -EINVAL;
|
2013-03-15 05:12:06 +08:00
|
|
|
return amradio_set_freq(radio, f->frequency);
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* vidioc_g_frequency - get tuner radio frequency */
|
|
|
|
static int vidioc_g_frequency(struct file *file, void *priv,
|
|
|
|
struct v4l2_frequency *f)
|
|
|
|
{
|
2012-04-27 23:30:40 +08:00
|
|
|
struct amradio_device *radio = video_drvdata(file);
|
2008-11-19 11:36:29 +08:00
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
|
2009-11-27 15:33:25 +08:00
|
|
|
return -EINVAL;
|
2008-10-01 20:40:59 +08:00
|
|
|
f->type = V4L2_TUNER_RADIO;
|
|
|
|
f->frequency = radio->curfreq;
|
2009-09-23 08:22:19 +08:00
|
|
|
|
2008-10-01 20:40:59 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-04-28 05:39:37 +08:00
|
|
|
static int vidioc_s_hw_freq_seek(struct file *file, void *priv,
|
2012-09-14 18:41:18 +08:00
|
|
|
const struct v4l2_hw_freq_seek *seek)
|
2012-04-28 05:39:37 +08:00
|
|
|
{
|
|
|
|
static u8 buf[8] = {
|
|
|
|
0x3d, 0x32, 0x0f, 0x08, 0x3d, 0x32, 0x0f, 0x08
|
|
|
|
};
|
|
|
|
struct amradio_device *radio = video_drvdata(file);
|
|
|
|
unsigned long timeout;
|
|
|
|
int retval;
|
|
|
|
|
|
|
|
if (seek->tuner != 0 || !seek->wrap_around)
|
|
|
|
return -EINVAL;
|
|
|
|
|
2012-09-21 20:33:35 +08:00
|
|
|
if (file->f_flags & O_NONBLOCK)
|
|
|
|
return -EWOULDBLOCK;
|
|
|
|
|
2012-04-28 05:39:37 +08:00
|
|
|
retval = amradio_send_cmd(radio,
|
|
|
|
AMRADIO_SET_SEARCH_LVL, 0, buf, 8, false);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
amradio_set_freq(radio, radio->curfreq);
|
|
|
|
retval = amradio_send_cmd(radio,
|
|
|
|
seek->seek_upward ? AMRADIO_SET_SEARCH_UP : AMRADIO_SET_SEARCH_DOWN,
|
|
|
|
0, NULL, 0, false);
|
|
|
|
if (retval)
|
|
|
|
return retval;
|
|
|
|
timeout = jiffies + msecs_to_jiffies(30000);
|
|
|
|
for (;;) {
|
|
|
|
if (time_after(jiffies, timeout)) {
|
2012-05-27 18:25:06 +08:00
|
|
|
retval = -ENODATA;
|
2012-04-28 05:39:37 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (schedule_timeout_interruptible(msecs_to_jiffies(10))) {
|
|
|
|
retval = -ERESTARTSYS;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
retval = amradio_send_cmd(radio, AMRADIO_GET_READY_FLAG,
|
|
|
|
0, NULL, 0, true);
|
|
|
|
if (retval)
|
|
|
|
continue;
|
|
|
|
amradio_send_cmd(radio, AMRADIO_GET_FREQ, 0, NULL, 0, true);
|
|
|
|
if (radio->buffer[1] || radio->buffer[2]) {
|
2013-03-15 05:12:06 +08:00
|
|
|
/* To check: sometimes radio->curfreq is set to out of range value */
|
2012-04-28 05:39:37 +08:00
|
|
|
radio->curfreq = (radio->buffer[1] << 8) | radio->buffer[2];
|
|
|
|
radio->curfreq = (radio->curfreq - 0x10) * 200;
|
|
|
|
amradio_send_cmd(radio, AMRADIO_STOP_SEARCH,
|
|
|
|
0, NULL, 0, false);
|
|
|
|
amradio_set_freq(radio, radio->curfreq);
|
|
|
|
retval = 0;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
amradio_send_cmd(radio, AMRADIO_STOP_SEARCH, 0, NULL, 0, false);
|
|
|
|
amradio_set_freq(radio, radio->curfreq);
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
static int usb_amradio_s_ctrl(struct v4l2_ctrl *ctrl)
|
2008-10-01 20:40:59 +08:00
|
|
|
{
|
2012-04-27 23:30:40 +08:00
|
|
|
struct amradio_device *radio =
|
|
|
|
container_of(ctrl->handler, struct amradio_device, hdl);
|
2008-11-19 11:36:29 +08:00
|
|
|
|
2008-10-01 20:40:59 +08:00
|
|
|
switch (ctrl->id) {
|
|
|
|
case V4L2_CID_AUDIO_MUTE:
|
2012-04-28 05:39:37 +08:00
|
|
|
return amradio_set_mute(radio, ctrl->val);
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
2009-09-23 08:22:19 +08:00
|
|
|
|
2008-10-01 20:40:59 +08:00
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
2009-09-24 05:13:50 +08:00
|
|
|
static int usb_amradio_init(struct amradio_device *radio)
|
2008-10-01 20:40:59 +08:00
|
|
|
{
|
2009-02-05 19:48:43 +08:00
|
|
|
int retval;
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2012-04-28 05:39:37 +08:00
|
|
|
retval = amradio_set_mute(radio, true);
|
2009-09-24 05:28:02 +08:00
|
|
|
if (retval)
|
2009-09-24 05:13:50 +08:00
|
|
|
goto out_err;
|
2012-04-28 05:39:37 +08:00
|
|
|
retval = amradio_set_stereo(radio, true);
|
2009-09-24 05:28:02 +08:00
|
|
|
if (retval)
|
2009-09-24 05:13:50 +08:00
|
|
|
goto out_err;
|
2012-04-28 05:39:37 +08:00
|
|
|
retval = amradio_set_freq(radio, radio->curfreq);
|
|
|
|
if (retval)
|
|
|
|
goto out_err;
|
|
|
|
return 0;
|
2009-09-24 05:13:50 +08:00
|
|
|
|
|
|
|
out_err:
|
2012-04-27 23:30:40 +08:00
|
|
|
amradio_dev_err(&radio->vdev.dev, "initialization failed\n");
|
2009-09-24 05:13:50 +08:00
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2008-10-01 20:40:59 +08:00
|
|
|
/* Suspend device - stop device. Need to be checked and fixed */
|
|
|
|
static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message)
|
|
|
|
{
|
2010-05-02 16:36:32 +08:00
|
|
|
struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf));
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2010-10-17 20:26:18 +08:00
|
|
|
mutex_lock(&radio->lock);
|
2012-04-27 23:30:40 +08:00
|
|
|
if (!radio->muted) {
|
2012-04-28 05:39:37 +08:00
|
|
|
amradio_set_mute(radio, true);
|
|
|
|
radio->muted = false;
|
2009-09-24 05:24:47 +08:00
|
|
|
}
|
2010-10-17 20:26:18 +08:00
|
|
|
mutex_unlock(&radio->lock);
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2008-11-05 02:02:36 +08:00
|
|
|
dev_info(&intf->dev, "going into suspend..\n");
|
2008-10-01 20:40:59 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Resume device - start device. Need to be checked and fixed */
|
|
|
|
static int usb_amradio_resume(struct usb_interface *intf)
|
|
|
|
{
|
2010-05-02 16:36:32 +08:00
|
|
|
struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf));
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2010-10-17 20:26:18 +08:00
|
|
|
mutex_lock(&radio->lock);
|
2012-04-28 05:39:37 +08:00
|
|
|
amradio_set_stereo(radio, radio->stereo);
|
|
|
|
amradio_set_freq(radio, radio->curfreq);
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2009-09-24 05:28:02 +08:00
|
|
|
if (!radio->muted)
|
2012-04-28 05:39:37 +08:00
|
|
|
amradio_set_mute(radio, false);
|
2009-09-24 05:24:47 +08:00
|
|
|
|
2010-10-17 20:26:18 +08:00
|
|
|
mutex_unlock(&radio->lock);
|
|
|
|
|
2008-11-05 02:02:36 +08:00
|
|
|
dev_info(&intf->dev, "coming out of suspend..\n");
|
2008-10-01 20:40:59 +08:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
static const struct v4l2_ctrl_ops usb_amradio_ctrl_ops = {
|
|
|
|
.s_ctrl = usb_amradio_s_ctrl,
|
|
|
|
};
|
|
|
|
|
2008-10-01 20:40:59 +08:00
|
|
|
/* File system interface */
|
2008-12-30 17:58:20 +08:00
|
|
|
static const struct v4l2_file_operations usb_amradio_fops = {
|
2008-10-01 20:40:59 +08:00
|
|
|
.owner = THIS_MODULE,
|
2012-04-27 23:30:40 +08:00
|
|
|
.open = v4l2_fh_open,
|
|
|
|
.release = v4l2_fh_release,
|
|
|
|
.poll = v4l2_ctrl_poll,
|
2010-09-26 19:01:18 +08:00
|
|
|
.unlocked_ioctl = video_ioctl2,
|
2008-10-01 20:40:59 +08:00
|
|
|
};
|
|
|
|
|
|
|
|
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,
|
2012-04-28 05:39:37 +08:00
|
|
|
.vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek,
|
2012-04-27 23:30:40 +08:00
|
|
|
.vidioc_log_status = v4l2_ctrl_log_status,
|
|
|
|
.vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
|
|
|
|
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
|
2008-10-01 20:40:59 +08:00
|
|
|
};
|
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
static void usb_amradio_release(struct v4l2_device *v4l2_dev)
|
2008-12-28 08:30:34 +08:00
|
|
|
{
|
2012-04-27 23:30:40 +08:00
|
|
|
struct amradio_device *radio = to_amradio_dev(v4l2_dev);
|
2009-04-04 05:45:27 +08:00
|
|
|
|
2008-12-28 08:30:34 +08:00
|
|
|
/* free rest memory */
|
2012-04-27 23:30:40 +08:00
|
|
|
v4l2_ctrl_handler_free(&radio->hdl);
|
|
|
|
v4l2_device_unregister(&radio->v4l2_dev);
|
2008-12-28 08:30:34 +08:00
|
|
|
kfree(radio->buffer);
|
|
|
|
kfree(radio);
|
|
|
|
}
|
|
|
|
|
2009-02-05 19:48:43 +08:00
|
|
|
/* check if the device is present and register with v4l and usb if it is */
|
2008-10-01 20:40:59 +08:00
|
|
|
static int usb_amradio_probe(struct usb_interface *intf,
|
|
|
|
const struct usb_device_id *id)
|
|
|
|
{
|
|
|
|
struct amradio_device *radio;
|
2018-02-23 04:45:47 +08:00
|
|
|
int retval;
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2009-04-04 05:45:27 +08:00
|
|
|
radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL);
|
2008-10-01 20:40:59 +08:00
|
|
|
|
2009-02-05 19:51:51 +08:00
|
|
|
if (!radio) {
|
|
|
|
dev_err(&intf->dev, "kmalloc for amradio_device failed\n");
|
2009-09-23 08:43:19 +08:00
|
|
|
retval = -ENOMEM;
|
|
|
|
goto err;
|
2009-02-05 19:51:51 +08:00
|
|
|
}
|
2008-10-01 20:40:59 +08:00
|
|
|
|
|
|
|
radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);
|
|
|
|
|
2009-02-05 19:51:51 +08:00
|
|
|
if (!radio->buffer) {
|
|
|
|
dev_err(&intf->dev, "kmalloc for radio->buffer failed\n");
|
2009-09-23 08:43:19 +08:00
|
|
|
retval = -ENOMEM;
|
|
|
|
goto err_nobuf;
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
|
|
|
|
2009-09-23 08:48:43 +08:00
|
|
|
retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev);
|
2009-04-04 05:45:27 +08:00
|
|
|
if (retval < 0) {
|
|
|
|
dev_err(&intf->dev, "couldn't register v4l2_device\n");
|
2009-09-23 08:43:19 +08:00
|
|
|
goto err_v4l2;
|
2009-04-04 05:45:27 +08:00
|
|
|
}
|
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
v4l2_ctrl_handler_init(&radio->hdl, 1);
|
|
|
|
v4l2_ctrl_new_std(&radio->hdl, &usb_amradio_ctrl_ops,
|
|
|
|
V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
|
|
|
|
if (radio->hdl.error) {
|
|
|
|
retval = radio->hdl.error;
|
|
|
|
dev_err(&intf->dev, "couldn't register control\n");
|
|
|
|
goto err_ctrl;
|
|
|
|
}
|
2010-09-26 19:01:18 +08:00
|
|
|
mutex_init(&radio->lock);
|
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
radio->v4l2_dev.ctrl_handler = &radio->hdl;
|
|
|
|
radio->v4l2_dev.release = usb_amradio_release;
|
2018-09-10 20:19:14 +08:00
|
|
|
strscpy(radio->vdev.name, radio->v4l2_dev.name,
|
2012-04-27 23:30:40 +08:00
|
|
|
sizeof(radio->vdev.name));
|
|
|
|
radio->vdev.v4l2_dev = &radio->v4l2_dev;
|
|
|
|
radio->vdev.fops = &usb_amradio_fops;
|
|
|
|
radio->vdev.ioctl_ops = &usb_amradio_ioctl_ops;
|
|
|
|
radio->vdev.release = video_device_release_empty;
|
|
|
|
radio->vdev.lock = &radio->lock;
|
2008-10-01 20:40:59 +08:00
|
|
|
|
|
|
|
radio->usbdev = interface_to_usbdev(intf);
|
2009-11-10 06:09:49 +08:00
|
|
|
radio->intf = intf;
|
2012-04-27 23:30:40 +08:00
|
|
|
usb_set_intfdata(intf, &radio->v4l2_dev);
|
2008-10-01 20:40:59 +08:00
|
|
|
radio->curfreq = 95.16 * FREQ_MUL;
|
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
video_set_drvdata(&radio->vdev, radio);
|
|
|
|
retval = usb_amradio_init(radio);
|
|
|
|
if (retval)
|
|
|
|
goto err_vdev;
|
2009-04-04 05:45:27 +08:00
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO,
|
2009-09-23 08:37:30 +08:00
|
|
|
radio_nr);
|
2009-02-05 19:48:43 +08:00
|
|
|
if (retval < 0) {
|
2009-02-05 19:49:58 +08:00
|
|
|
dev_err(&intf->dev, "could not register video device\n");
|
2009-09-23 08:43:19 +08:00
|
|
|
goto err_vdev;
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
2009-09-23 08:43:19 +08:00
|
|
|
|
|
|
|
err_vdev:
|
2012-04-27 23:30:40 +08:00
|
|
|
v4l2_ctrl_handler_free(&radio->hdl);
|
|
|
|
err_ctrl:
|
2009-09-23 08:48:43 +08:00
|
|
|
v4l2_device_unregister(&radio->v4l2_dev);
|
2009-09-23 08:43:19 +08:00
|
|
|
err_v4l2:
|
|
|
|
kfree(radio->buffer);
|
|
|
|
err_nobuf:
|
|
|
|
kfree(radio);
|
|
|
|
err:
|
|
|
|
return retval;
|
2008-10-01 20:40:59 +08:00
|
|
|
}
|
|
|
|
|
2012-04-27 23:30:40 +08:00
|
|
|
/* USB Device ID List */
|
2017-08-13 16:54:45 +08:00
|
|
|
static const struct usb_device_id usb_amradio_device_table[] = {
|
2012-04-27 23:30:40 +08:00
|
|
|
{ USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT,
|
|
|
|
USB_CLASS_HID, 0, 0) },
|
|
|
|
{ } /* Terminating entry */
|
|
|
|
};
|
|
|
|
|
|
|
|
MODULE_DEVICE_TABLE(usb, usb_amradio_device_table);
|
|
|
|
|
|
|
|
/* USB subsystem interface */
|
|
|
|
static struct usb_driver usb_amradio_driver = {
|
|
|
|
.name = MR800_DRIVER_NAME,
|
|
|
|
.probe = usb_amradio_probe,
|
|
|
|
.disconnect = usb_amradio_disconnect,
|
|
|
|
.suspend = usb_amradio_suspend,
|
|
|
|
.resume = usb_amradio_resume,
|
|
|
|
.reset_resume = usb_amradio_resume,
|
|
|
|
.id_table = usb_amradio_device_table,
|
|
|
|
};
|
|
|
|
|
2011-11-19 01:46:12 +08:00
|
|
|
module_usb_driver(usb_amradio_driver);
|