^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * A driver for the AverMedia MR 800 USB FM radio. This device plugs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * into both the USB and an analog audio input, so this thing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * only deals with initialization and frequency setting, the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * audio data has to be handled by a sound driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) * Copyright (c) 2008 Alexey Klimov <klimov.linux@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * Big thanks to authors and contributors of dsbr100.c and radio-si470x.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * When work was looked pretty good, i discover this:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * http://av-usbradio.sourceforge.net/index.php
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) * http://sourceforge.net/projects/av-usbradio/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * Latest release of theirs project was in 2005.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * Probably, this driver could be improved through using their
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * achievements (specifications given).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * Also, Faidon Liambotis <paravoid@debian.org> wrote nice driver for this radio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) * in 2007. He allowed to use his driver to improve current mr800 radio driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * http://www.spinics.net/lists/linux-usb-devel/msg10109.html
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * Version 0.01: First working version.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * It's required to blacklist AverMedia USB Radio
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * in usbhid/hid-quirks.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * Version 0.10: A lot of cleanups and fixes: unpluging the device,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * few mutex locks were added, codinstyle issues, etc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * Added stereo support. Thanks to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * Douglas Schilling Landgraf <dougsland@gmail.com> and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * David Ellingsworth <david@identd.dyndns.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * for discussion, help and support.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * Version 0.11: Converted to v4l2_device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * Many things to do:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * - Correct power management of device (suspend & resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) * - Add code for scanning and smooth tuning
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * - Add code for sensitivity value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * - Correct mistakes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * - In Japan another FREQ_MIN and FREQ_MAX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) /* kernel includes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include <linux/videodev2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include <media/v4l2-device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) #include <media/v4l2-ioctl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #include <media/v4l2-ctrls.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #include <media/v4l2-event.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #include <linux/usb.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) /* driver and module definitions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #define DRIVER_DESC "AverMedia MR 800 USB FM radio driver"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) #define DRIVER_VERSION "0.1.2"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) MODULE_AUTHOR(DRIVER_AUTHOR);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) MODULE_DESCRIPTION(DRIVER_DESC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) MODULE_VERSION(DRIVER_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #define USB_AMRADIO_VENDOR 0x07ca
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) #define USB_AMRADIO_PRODUCT 0xb800
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) /* dev_warn macro with driver name */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) #define MR800_DRIVER_NAME "radio-mr800"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) #define amradio_dev_warn(dev, fmt, arg...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) dev_warn(dev, MR800_DRIVER_NAME " - " fmt, ##arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) #define amradio_dev_err(dev, fmt, arg...) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) dev_err(dev, MR800_DRIVER_NAME " - " fmt, ##arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) /* Probably USB_TIMEOUT should be modified in module parameter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define BUFFER_LENGTH 8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define USB_TIMEOUT 500
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) /* Frequency limits in MHz -- these are European values. For Japanese
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) devices, that would be 76 and 91. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) #define FREQ_MIN 87.5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) #define FREQ_MAX 108.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #define FREQ_MUL 16000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * Commands that device should understand
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * List isn't full and will be updated with implementation of new functions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) #define AMRADIO_SET_FREQ 0xa4
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) #define AMRADIO_GET_READY_FLAG 0xa5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) #define AMRADIO_GET_SIGNAL 0xa7
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) #define AMRADIO_GET_FREQ 0xa8
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #define AMRADIO_SET_SEARCH_UP 0xa9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #define AMRADIO_SET_SEARCH_DOWN 0xaa
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #define AMRADIO_SET_MUTE 0xab
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) #define AMRADIO_SET_RIGHT_MUTE 0xac
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #define AMRADIO_SET_LEFT_MUTE 0xad
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #define AMRADIO_SET_MONO 0xae
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) #define AMRADIO_SET_SEARCH_LVL 0xb0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) #define AMRADIO_STOP_SEARCH 0xb1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* Comfortable defines for amradio_set_stereo */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) #define WANT_STEREO 0x00
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) #define WANT_MONO 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) /* module parameter */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) static int radio_nr = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) module_param(radio_nr, int, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) MODULE_PARM_DESC(radio_nr, "Radio Nr");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* Data for one (physical) device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct amradio_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) /* reference to USB and video device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct usb_device *usbdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct usb_interface *intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct video_device vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) struct v4l2_device v4l2_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) struct v4l2_ctrl_handler hdl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) u8 *buffer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) struct mutex lock; /* buffer locking */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) int curfreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) int stereo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) int muted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static inline struct amradio_device *to_amradio_dev(struct v4l2_device *v4l2_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) return container_of(v4l2_dev, struct amradio_device, v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static int amradio_send_cmd(struct amradio_device *radio, u8 cmd, u8 arg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) u8 *extra, u8 extralen, bool reply)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) radio->buffer[0] = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) radio->buffer[1] = 0x55;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) radio->buffer[2] = 0xaa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) radio->buffer[3] = extralen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) radio->buffer[4] = cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) radio->buffer[5] = arg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) radio->buffer[6] = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) radio->buffer[7] = extra || reply ? 8 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) if (retval < 0 || size != BUFFER_LENGTH) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (video_is_registered(&radio->vdev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) amradio_dev_warn(&radio->vdev.dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) "cmd %02x failed\n", cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return retval ? retval : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) if (!extra && !reply)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) if (extra) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) memcpy(radio->buffer, extra, extralen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) memset(radio->buffer + extralen, 0, 8 - extralen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) memset(radio->buffer, 0, 8);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) retval = usb_bulk_msg(radio->usbdev, usb_rcvbulkpipe(radio->usbdev, 0x81),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) radio->buffer, BUFFER_LENGTH, &size, USB_TIMEOUT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (retval == 0 && size == BUFFER_LENGTH)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) if (video_is_registered(&radio->vdev) && cmd != AMRADIO_GET_READY_FLAG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) amradio_dev_warn(&radio->vdev.dev, "follow-up to cmd %02x failed\n", cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) return retval ? retval : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) /* switch on/off the radio. Send 8 bytes to device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static int amradio_set_mute(struct amradio_device *radio, bool mute)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) int ret = amradio_send_cmd(radio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) AMRADIO_SET_MUTE, mute, NULL, 0, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) radio->muted = mute;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) static int amradio_set_freq(struct amradio_device *radio, int freq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) unsigned short freq_send;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) u8 buf[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) /* we need to be sure that frequency isn't out of range */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) freq = clamp_t(unsigned, freq, FREQ_MIN * FREQ_MUL, FREQ_MAX * FREQ_MUL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) freq_send = 0x10 + (freq >> 3) / 25;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) /* frequency is calculated from freq_send and placed in first 2 bytes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) buf[0] = (freq_send >> 8) & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) buf[1] = freq_send & 0xff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) buf[2] = 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) retval = amradio_send_cmd(radio, AMRADIO_SET_FREQ, 0, buf, 3, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) radio->curfreq = freq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) msleep(40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static int amradio_set_stereo(struct amradio_device *radio, bool stereo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) int ret = amradio_send_cmd(radio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) AMRADIO_SET_MONO, !stereo, NULL, 0, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) radio->stereo = stereo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static int amradio_get_stat(struct amradio_device *radio, bool *is_stereo, u32 *signal)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) int ret = amradio_send_cmd(radio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) AMRADIO_GET_SIGNAL, 0, NULL, 0, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) *is_stereo = radio->buffer[2] >> 7;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) *signal = (radio->buffer[3] & 0xf0) << 8;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) /* Handle unplugging the device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) * We call video_unregister_device in any case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) * The last function called in this procedure is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) * usb_amradio_device_release.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) static void usb_amradio_disconnect(struct usb_interface *intf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) mutex_lock(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) video_unregister_device(&radio->vdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) amradio_set_mute(radio, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) usb_set_intfdata(intf, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) v4l2_device_disconnect(&radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) mutex_unlock(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) v4l2_device_put(&radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) /* vidioc_querycap - query device capabilities */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static int vidioc_querycap(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) struct v4l2_capability *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) struct amradio_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) strscpy(v->driver, "radio-mr800", sizeof(v->driver));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) strscpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) /* vidioc_g_tuner - get tuner attributes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) static int vidioc_g_tuner(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) struct v4l2_tuner *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) struct amradio_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) bool is_stereo = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (v->index > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) v->signal = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) retval = amradio_get_stat(radio, &is_stereo, &v->signal);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) strscpy(v->name, "FM", sizeof(v->name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) v->type = V4L2_TUNER_RADIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) v->rangelow = FREQ_MIN * FREQ_MUL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) v->rangehigh = FREQ_MAX * FREQ_MUL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) V4L2_TUNER_CAP_HWSEEK_WRAP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) v->rxsubchans = is_stereo ? V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) v->audmode = radio->stereo ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) V4L2_TUNER_MODE_STEREO : V4L2_TUNER_MODE_MONO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) /* vidioc_s_tuner - set tuner attributes */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) static int vidioc_s_tuner(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) const struct v4l2_tuner *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) struct amradio_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) if (v->index > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) /* mono/stereo selector */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) switch (v->audmode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) case V4L2_TUNER_MODE_MONO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return amradio_set_stereo(radio, WANT_MONO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) return amradio_set_stereo(radio, WANT_STEREO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) /* vidioc_s_frequency - set tuner radio frequency */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) static int vidioc_s_frequency(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) const struct v4l2_frequency *f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) struct amradio_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (f->tuner != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) return amradio_set_freq(radio, f->frequency);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) /* vidioc_g_frequency - get tuner radio frequency */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) static int vidioc_g_frequency(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) struct v4l2_frequency *f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) struct amradio_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) f->type = V4L2_TUNER_RADIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) f->frequency = radio->curfreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) static int vidioc_s_hw_freq_seek(struct file *file, void *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) const struct v4l2_hw_freq_seek *seek)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) static u8 buf[8] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 0x3d, 0x32, 0x0f, 0x08, 0x3d, 0x32, 0x0f, 0x08
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) struct amradio_device *radio = video_drvdata(file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) unsigned long timeout;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) if (seek->tuner != 0 || !seek->wrap_around)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (file->f_flags & O_NONBLOCK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) return -EWOULDBLOCK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) retval = amradio_send_cmd(radio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) AMRADIO_SET_SEARCH_LVL, 0, buf, 8, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) amradio_set_freq(radio, radio->curfreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) retval = amradio_send_cmd(radio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) seek->seek_upward ? AMRADIO_SET_SEARCH_UP : AMRADIO_SET_SEARCH_DOWN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 0, NULL, 0, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) timeout = jiffies + msecs_to_jiffies(30000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) if (time_after(jiffies, timeout)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) retval = -ENODATA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) if (schedule_timeout_interruptible(msecs_to_jiffies(10))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) retval = -ERESTARTSYS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) retval = amradio_send_cmd(radio, AMRADIO_GET_READY_FLAG,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 0, NULL, 0, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) amradio_send_cmd(radio, AMRADIO_GET_FREQ, 0, NULL, 0, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (radio->buffer[1] || radio->buffer[2]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) /* To check: sometimes radio->curfreq is set to out of range value */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) radio->curfreq = (radio->buffer[1] << 8) | radio->buffer[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) radio->curfreq = (radio->curfreq - 0x10) * 200;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) amradio_send_cmd(radio, AMRADIO_STOP_SEARCH,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 0, NULL, 0, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) amradio_set_freq(radio, radio->curfreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) retval = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) amradio_send_cmd(radio, AMRADIO_STOP_SEARCH, 0, NULL, 0, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) amradio_set_freq(radio, radio->curfreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) static int usb_amradio_s_ctrl(struct v4l2_ctrl *ctrl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) struct amradio_device *radio =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) container_of(ctrl->handler, struct amradio_device, hdl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) switch (ctrl->id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) case V4L2_CID_AUDIO_MUTE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) return amradio_set_mute(radio, ctrl->val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) static int usb_amradio_init(struct amradio_device *radio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) retval = amradio_set_mute(radio, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) retval = amradio_set_stereo(radio, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) retval = amradio_set_freq(radio, radio->curfreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) goto out_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) out_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) amradio_dev_err(&radio->vdev.dev, "initialization failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) /* Suspend device - stop device. Need to be checked and fixed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) mutex_lock(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) if (!radio->muted) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) amradio_set_mute(radio, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) radio->muted = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) mutex_unlock(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) dev_info(&intf->dev, "going into suspend..\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) /* Resume device - start device. Need to be checked and fixed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) static int usb_amradio_resume(struct usb_interface *intf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) mutex_lock(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) amradio_set_stereo(radio, radio->stereo);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) amradio_set_freq(radio, radio->curfreq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (!radio->muted)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) amradio_set_mute(radio, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) mutex_unlock(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) dev_info(&intf->dev, "coming out of suspend..\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) static const struct v4l2_ctrl_ops usb_amradio_ctrl_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) .s_ctrl = usb_amradio_s_ctrl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) /* File system interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) static const struct v4l2_file_operations usb_amradio_fops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) .open = v4l2_fh_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) .release = v4l2_fh_release,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) .poll = v4l2_ctrl_poll,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) .unlocked_ioctl = video_ioctl2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) .vidioc_querycap = vidioc_querycap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) .vidioc_g_tuner = vidioc_g_tuner,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) .vidioc_s_tuner = vidioc_s_tuner,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) .vidioc_g_frequency = vidioc_g_frequency,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) .vidioc_s_frequency = vidioc_s_frequency,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) .vidioc_s_hw_freq_seek = vidioc_s_hw_freq_seek,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) .vidioc_log_status = v4l2_ctrl_log_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) static void usb_amradio_release(struct v4l2_device *v4l2_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) struct amradio_device *radio = to_amradio_dev(v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) /* free rest memory */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) v4l2_ctrl_handler_free(&radio->hdl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) v4l2_device_unregister(&radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) kfree(radio->buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) kfree(radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) /* check if the device is present and register with v4l and usb if it is */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) static int usb_amradio_probe(struct usb_interface *intf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) const struct usb_device_id *id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) struct amradio_device *radio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) if (!radio) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) dev_err(&intf->dev, "kmalloc for amradio_device failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) if (!radio->buffer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) dev_err(&intf->dev, "kmalloc for radio->buffer failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) retval = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) goto err_nobuf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) dev_err(&intf->dev, "couldn't register v4l2_device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) goto err_v4l2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) v4l2_ctrl_handler_init(&radio->hdl, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) v4l2_ctrl_new_std(&radio->hdl, &usb_amradio_ctrl_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (radio->hdl.error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) retval = radio->hdl.error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) dev_err(&intf->dev, "couldn't register control\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) goto err_ctrl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) mutex_init(&radio->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) radio->v4l2_dev.ctrl_handler = &radio->hdl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) radio->v4l2_dev.release = usb_amradio_release;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) strscpy(radio->vdev.name, radio->v4l2_dev.name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) sizeof(radio->vdev.name));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) radio->vdev.v4l2_dev = &radio->v4l2_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) radio->vdev.fops = &usb_amradio_fops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) radio->vdev.ioctl_ops = &usb_amradio_ioctl_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) radio->vdev.release = video_device_release_empty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) radio->vdev.lock = &radio->lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) radio->vdev.device_caps = V4L2_CAP_RADIO | V4L2_CAP_TUNER |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) V4L2_CAP_HW_FREQ_SEEK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) radio->usbdev = interface_to_usbdev(intf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) radio->intf = intf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) usb_set_intfdata(intf, &radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) radio->curfreq = 95.16 * FREQ_MUL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) video_set_drvdata(&radio->vdev, radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) retval = usb_amradio_init(radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) if (retval)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) goto err_vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) retval = video_register_device(&radio->vdev, VFL_TYPE_RADIO,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) radio_nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) if (retval < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) dev_err(&intf->dev, "could not register video device\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) goto err_vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) err_vdev:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) v4l2_ctrl_handler_free(&radio->hdl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) err_ctrl:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) v4l2_device_unregister(&radio->v4l2_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) err_v4l2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) kfree(radio->buffer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) err_nobuf:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) kfree(radio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) return retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) /* USB Device ID List */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) static const struct usb_device_id usb_amradio_device_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) { USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) USB_CLASS_HID, 0, 0) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) { } /* Terminating entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) MODULE_DEVICE_TABLE(usb, usb_amradio_device_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) /* USB subsystem interface */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) static struct usb_driver usb_amradio_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) .name = MR800_DRIVER_NAME,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) .probe = usb_amradio_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) .disconnect = usb_amradio_disconnect,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) .suspend = usb_amradio_suspend,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) .resume = usb_amradio_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) .reset_resume = usb_amradio_resume,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) .id_table = usb_amradio_device_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) module_usb_driver(usb_amradio_driver);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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