Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 1 | /* |
| 2 | * A driver for the AverMedia MR 800 USB FM radio. This device plugs |
| 3 | * into both the USB and an analog audio input, so this thing |
| 4 | * only deals with initialization and frequency setting, the |
| 5 | * audio data has to be handled by a sound driver. |
| 6 | * |
| 7 | * Copyright (c) 2008 Alexey Klimov <klimov.linux@gmail.com> |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | */ |
| 23 | |
| 24 | /* |
Alexey Klimov | 71f07d9 | 2009-02-05 08:58:31 -0300 | [diff] [blame] | 25 | * Big thanks to authors and contributors of dsbr100.c and radio-si470x.c |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 26 | * |
| 27 | * When work was looked pretty good, i discover this: |
| 28 | * http://av-usbradio.sourceforge.net/index.php |
| 29 | * http://sourceforge.net/projects/av-usbradio/ |
| 30 | * Latest release of theirs project was in 2005. |
| 31 | * Probably, this driver could be improved trough using their |
| 32 | * achievements (specifications given). |
Alexey Klimov | 71f07d9 | 2009-02-05 08:58:31 -0300 | [diff] [blame] | 33 | * Also, Faidon Liambotis <paravoid@debian.org> wrote nice driver for this radio |
| 34 | * in 2007. He allowed to use his driver to improve current mr800 radio driver. |
| 35 | * http://kerneltrap.org/mailarchive/linux-usb-devel/2007/10/11/342492 |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 36 | * |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 37 | * Version 0.01: First working version. |
| 38 | * It's required to blacklist AverMedia USB Radio |
| 39 | * in usbhid/hid-quirks.c |
Alexey Klimov | 71f07d9 | 2009-02-05 08:58:31 -0300 | [diff] [blame] | 40 | * Version 0.10: A lot of cleanups and fixes: unpluging the device, |
| 41 | * few mutex locks were added, codinstyle issues, etc. |
| 42 | * Added stereo support. Thanks to |
| 43 | * Douglas Schilling Landgraf <dougsland@gmail.com> and |
| 44 | * David Ellingsworth <david@identd.dyndns.org> |
| 45 | * for discussion, help and support. |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 46 | * Version 0.11: Converted to v4l2_device. |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 47 | * |
| 48 | * Many things to do: |
Uwe Kleine-Koenig | 3dbda77 | 2009-07-23 08:31:31 +0200 | [diff] [blame] | 49 | * - Correct power management of device (suspend & resume) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 50 | * - Add code for scanning and smooth tuning |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 51 | * - Add code for sensitivity value |
| 52 | * - Correct mistakes |
| 53 | * - In Japan another FREQ_MIN and FREQ_MAX |
| 54 | */ |
| 55 | |
| 56 | /* kernel includes */ |
| 57 | #include <linux/kernel.h> |
| 58 | #include <linux/module.h> |
| 59 | #include <linux/init.h> |
| 60 | #include <linux/slab.h> |
Alexey Dobriyan | 405f557 | 2009-07-11 22:08:37 +0400 | [diff] [blame] | 61 | #include <linux/smp_lock.h> |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 62 | #include <linux/input.h> |
| 63 | #include <linux/videodev2.h> |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 64 | #include <media/v4l2-device.h> |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 65 | #include <media/v4l2-ioctl.h> |
| 66 | #include <linux/usb.h> |
| 67 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
Alessio Igor Bogani | 24c44d8 | 2009-05-12 17:39:27 -0300 | [diff] [blame] | 68 | #include <linux/mutex.h> |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 69 | |
| 70 | /* driver and module definitions */ |
| 71 | #define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>" |
| 72 | #define DRIVER_DESC "AverMedia MR 800 USB FM radio driver" |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 73 | #define DRIVER_VERSION "0.11" |
| 74 | #define RADIO_VERSION KERNEL_VERSION(0, 1, 1) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 75 | |
| 76 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 77 | MODULE_DESCRIPTION(DRIVER_DESC); |
| 78 | MODULE_LICENSE("GPL"); |
| 79 | |
| 80 | #define USB_AMRADIO_VENDOR 0x07ca |
| 81 | #define USB_AMRADIO_PRODUCT 0xb800 |
| 82 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 83 | /* dev_warn macro with driver name */ |
| 84 | #define MR800_DRIVER_NAME "radio-mr800" |
| 85 | #define amradio_dev_warn(dev, fmt, arg...) \ |
| 86 | dev_warn(dev, MR800_DRIVER_NAME " - " fmt, ##arg) |
| 87 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 88 | /* Probably USB_TIMEOUT should be modified in module parameter */ |
| 89 | #define BUFFER_LENGTH 8 |
| 90 | #define USB_TIMEOUT 500 |
| 91 | |
| 92 | /* Frequency limits in MHz -- these are European values. For Japanese |
| 93 | devices, that would be 76 and 91. */ |
| 94 | #define FREQ_MIN 87.5 |
| 95 | #define FREQ_MAX 108.0 |
| 96 | #define FREQ_MUL 16000 |
| 97 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 98 | /* |
| 99 | * Commands that device should understand |
| 100 | * List isnt full and will be updated with implementation of new functions |
| 101 | */ |
Alexey Klimov | f7c1a38 | 2009-02-05 08:54:17 -0300 | [diff] [blame] | 102 | #define AMRADIO_SET_FREQ 0xa4 |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 103 | #define AMRADIO_SET_MUTE 0xab |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 104 | #define AMRADIO_SET_MONO 0xae |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 105 | |
| 106 | /* Comfortable defines for amradio_set_mute */ |
| 107 | #define AMRADIO_START 0x00 |
| 108 | #define AMRADIO_STOP 0x01 |
| 109 | |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 110 | /* Comfortable defines for amradio_set_stereo */ |
| 111 | #define WANT_STEREO 0x00 |
| 112 | #define WANT_MONO 0x01 |
| 113 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 114 | /* module parameter */ |
| 115 | static int radio_nr = -1; |
| 116 | module_param(radio_nr, int, 0); |
| 117 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); |
| 118 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 119 | static int usb_amradio_probe(struct usb_interface *intf, |
| 120 | const struct usb_device_id *id); |
| 121 | static void usb_amradio_disconnect(struct usb_interface *intf); |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 122 | static int usb_amradio_open(struct file *file); |
| 123 | static int usb_amradio_close(struct file *file); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 124 | static int usb_amradio_suspend(struct usb_interface *intf, |
| 125 | pm_message_t message); |
| 126 | static int usb_amradio_resume(struct usb_interface *intf); |
| 127 | |
| 128 | /* Data for one (physical) device */ |
| 129 | struct amradio_device { |
| 130 | /* reference to USB and video device */ |
| 131 | struct usb_device *usbdev; |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 132 | struct video_device videodev; |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 133 | struct v4l2_device v4l2_dev; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 134 | |
| 135 | unsigned char *buffer; |
| 136 | struct mutex lock; /* buffer locking */ |
| 137 | int curfreq; |
| 138 | int stereo; |
| 139 | int users; |
| 140 | int removed; |
| 141 | int muted; |
| 142 | }; |
| 143 | |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 144 | #define vdev_to_amradio(r) container_of(r, struct amradio_device, videodev) |
| 145 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 146 | /* USB Device ID List */ |
| 147 | static struct usb_device_id usb_amradio_device_table[] = { |
| 148 | {USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, |
| 149 | USB_CLASS_HID, 0, 0) }, |
| 150 | { } /* Terminating entry */ |
| 151 | }; |
| 152 | |
| 153 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); |
| 154 | |
| 155 | /* USB subsystem interface */ |
| 156 | static struct usb_driver usb_amradio_driver = { |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 157 | .name = MR800_DRIVER_NAME, |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 158 | .probe = usb_amradio_probe, |
| 159 | .disconnect = usb_amradio_disconnect, |
| 160 | .suspend = usb_amradio_suspend, |
| 161 | .resume = usb_amradio_resume, |
| 162 | .reset_resume = usb_amradio_resume, |
| 163 | .id_table = usb_amradio_device_table, |
Alexey Klimov | f2ce917 | 2008-12-27 21:31:49 -0300 | [diff] [blame] | 164 | .supports_autosuspend = 0, |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 165 | }; |
| 166 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 167 | /* switch on/off the radio. Send 8 bytes to device */ |
| 168 | static int amradio_set_mute(struct amradio_device *radio, char argument) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 169 | { |
| 170 | int retval; |
| 171 | int size; |
| 172 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 173 | BUG_ON(!mutex_is_locked(&radio->lock)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 174 | |
| 175 | radio->buffer[0] = 0x00; |
| 176 | radio->buffer[1] = 0x55; |
| 177 | radio->buffer[2] = 0xaa; |
| 178 | radio->buffer[3] = 0x00; |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 179 | radio->buffer[4] = AMRADIO_SET_MUTE; |
| 180 | radio->buffer[5] = argument; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 181 | radio->buffer[6] = 0x00; |
| 182 | radio->buffer[7] = 0x00; |
| 183 | |
| 184 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 185 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 186 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 187 | if (retval < 0 || size != BUFFER_LENGTH) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 188 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 189 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 190 | radio->muted = argument; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 191 | |
| 192 | return retval; |
| 193 | } |
| 194 | |
| 195 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ |
| 196 | static int amradio_setfreq(struct amradio_device *radio, int freq) |
| 197 | { |
| 198 | int retval; |
| 199 | int size; |
Alexey Klimov | f7c1a38 | 2009-02-05 08:54:17 -0300 | [diff] [blame] | 200 | unsigned short freq_send = 0x10 + (freq >> 3) / 25; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 201 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 202 | BUG_ON(!mutex_is_locked(&radio->lock)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 203 | |
| 204 | radio->buffer[0] = 0x00; |
| 205 | radio->buffer[1] = 0x55; |
| 206 | radio->buffer[2] = 0xaa; |
| 207 | radio->buffer[3] = 0x03; |
Alexey Klimov | f7c1a38 | 2009-02-05 08:54:17 -0300 | [diff] [blame] | 208 | radio->buffer[4] = AMRADIO_SET_FREQ; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 209 | radio->buffer[5] = 0x00; |
| 210 | radio->buffer[6] = 0x00; |
| 211 | radio->buffer[7] = 0x08; |
| 212 | |
| 213 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 214 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 215 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 216 | if (retval < 0 || size != BUFFER_LENGTH) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 217 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 218 | |
| 219 | /* frequency is calculated from freq_send and placed in first 2 bytes */ |
| 220 | radio->buffer[0] = (freq_send >> 8) & 0xff; |
| 221 | radio->buffer[1] = freq_send & 0xff; |
| 222 | radio->buffer[2] = 0x01; |
| 223 | radio->buffer[3] = 0x00; |
| 224 | radio->buffer[4] = 0x00; |
| 225 | /* 5 and 6 bytes of buffer already = 0x00 */ |
| 226 | radio->buffer[7] = 0x00; |
| 227 | |
| 228 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 229 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 230 | |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 231 | return retval; |
| 232 | } |
| 233 | |
| 234 | static int amradio_set_stereo(struct amradio_device *radio, char argument) |
| 235 | { |
| 236 | int retval; |
| 237 | int size; |
| 238 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 239 | BUG_ON(!mutex_is_locked(&radio->lock)); |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 240 | |
| 241 | radio->buffer[0] = 0x00; |
| 242 | radio->buffer[1] = 0x55; |
| 243 | radio->buffer[2] = 0xaa; |
| 244 | radio->buffer[3] = 0x00; |
| 245 | radio->buffer[4] = AMRADIO_SET_MONO; |
| 246 | radio->buffer[5] = argument; |
| 247 | radio->buffer[6] = 0x00; |
| 248 | radio->buffer[7] = 0x00; |
| 249 | |
| 250 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 251 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 252 | |
| 253 | if (retval < 0 || size != BUFFER_LENGTH) { |
| 254 | radio->stereo = -1; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 255 | return retval; |
| 256 | } |
| 257 | |
| 258 | radio->stereo = 1; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 259 | |
| 260 | return retval; |
| 261 | } |
| 262 | |
Alexey Klimov | 71f07d9 | 2009-02-05 08:58:31 -0300 | [diff] [blame] | 263 | /* Handle unplugging the device. |
| 264 | * We call video_unregister_device in any case. |
| 265 | * The last function called in this procedure is |
| 266 | * usb_amradio_device_release. |
| 267 | */ |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 268 | static void usb_amradio_disconnect(struct usb_interface *intf) |
| 269 | { |
| 270 | struct amradio_device *radio = usb_get_intfdata(intf); |
| 271 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 272 | mutex_lock(&radio->lock); |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 273 | radio->removed = 1; |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 274 | mutex_unlock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 275 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 276 | usb_set_intfdata(intf, NULL); |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 277 | video_unregister_device(&radio->videodev); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 278 | v4l2_device_disconnect(&radio->v4l2_dev); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | /* vidioc_querycap - query device capabilities */ |
| 282 | static int vidioc_querycap(struct file *file, void *priv, |
| 283 | struct v4l2_capability *v) |
| 284 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 285 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | c7181cf | 2009-01-25 20:05:58 -0300 | [diff] [blame] | 286 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 287 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
| 288 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); |
Alexey Klimov | c7181cf | 2009-01-25 20:05:58 -0300 | [diff] [blame] | 289 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 290 | v->version = RADIO_VERSION; |
| 291 | v->capabilities = V4L2_CAP_TUNER; |
| 292 | return 0; |
| 293 | } |
| 294 | |
| 295 | /* vidioc_g_tuner - get tuner attributes */ |
| 296 | static int vidioc_g_tuner(struct file *file, void *priv, |
| 297 | struct v4l2_tuner *v) |
| 298 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 299 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 300 | int retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 301 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 302 | mutex_lock(&radio->lock); |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 303 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 304 | /* safety check */ |
| 305 | if (radio->removed) { |
| 306 | retval = -EIO; |
| 307 | goto unlock; |
| 308 | } |
| 309 | |
| 310 | if (v->index > 0) { |
| 311 | retval = -EINVAL; |
| 312 | goto unlock; |
| 313 | } |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 314 | |
| 315 | /* TODO: Add function which look is signal stereo or not |
| 316 | * amradio_getstat(radio); |
| 317 | */ |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 318 | |
| 319 | /* we call amradio_set_stereo to set radio->stereo |
| 320 | * Honestly, amradio_getstat should cover this in future and |
| 321 | * amradio_set_stereo shouldn't be here |
| 322 | */ |
| 323 | retval = amradio_set_stereo(radio, WANT_STEREO); |
| 324 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 325 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 326 | "set stereo failed\n"); |
| 327 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 328 | strcpy(v->name, "FM"); |
| 329 | v->type = V4L2_TUNER_RADIO; |
| 330 | v->rangelow = FREQ_MIN * FREQ_MUL; |
| 331 | v->rangehigh = FREQ_MAX * FREQ_MUL; |
| 332 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; |
| 333 | v->capability = V4L2_TUNER_CAP_LOW; |
| 334 | if (radio->stereo) |
| 335 | v->audmode = V4L2_TUNER_MODE_STEREO; |
| 336 | else |
| 337 | v->audmode = V4L2_TUNER_MODE_MONO; |
| 338 | v->signal = 0xffff; /* Can't get the signal strength, sad.. */ |
| 339 | v->afc = 0; /* Don't know what is this */ |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 340 | |
| 341 | unlock: |
| 342 | mutex_unlock(&radio->lock); |
| 343 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | /* vidioc_s_tuner - set tuner attributes */ |
| 347 | static int vidioc_s_tuner(struct file *file, void *priv, |
| 348 | struct v4l2_tuner *v) |
| 349 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 350 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 351 | int retval; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 352 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 353 | mutex_lock(&radio->lock); |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 354 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 355 | /* safety check */ |
| 356 | if (radio->removed) { |
| 357 | retval = -EIO; |
| 358 | goto unlock; |
| 359 | } |
| 360 | |
| 361 | if (v->index > 0) { |
| 362 | retval = -EINVAL; |
| 363 | goto unlock; |
| 364 | } |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 365 | |
| 366 | /* mono/stereo selector */ |
| 367 | switch (v->audmode) { |
| 368 | case V4L2_TUNER_MODE_MONO: |
| 369 | retval = amradio_set_stereo(radio, WANT_MONO); |
| 370 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 371 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 372 | "set mono failed\n"); |
| 373 | break; |
| 374 | case V4L2_TUNER_MODE_STEREO: |
| 375 | retval = amradio_set_stereo(radio, WANT_STEREO); |
| 376 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 377 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 378 | "set stereo failed\n"); |
| 379 | break; |
| 380 | default: |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 381 | retval = -EINVAL; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 382 | } |
| 383 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 384 | unlock: |
| 385 | mutex_unlock(&radio->lock); |
| 386 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 387 | } |
| 388 | |
| 389 | /* vidioc_s_frequency - set tuner radio frequency */ |
| 390 | static int vidioc_s_frequency(struct file *file, void *priv, |
| 391 | struct v4l2_frequency *f) |
| 392 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 393 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 394 | int retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 395 | |
Alexey Klimov | 52433bb | 2009-02-05 08:57:19 -0300 | [diff] [blame] | 396 | mutex_lock(&radio->lock); |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 397 | |
| 398 | /* safety check */ |
| 399 | if (radio->removed) { |
| 400 | retval = -EIO; |
| 401 | goto unlock; |
| 402 | } |
| 403 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 404 | radio->curfreq = f->frequency; |
Alexey Klimov | 52433bb | 2009-02-05 08:57:19 -0300 | [diff] [blame] | 405 | |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 406 | retval = amradio_setfreq(radio, radio->curfreq); |
| 407 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 408 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 409 | "set frequency failed\n"); |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 410 | |
| 411 | unlock: |
| 412 | mutex_unlock(&radio->lock); |
| 413 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | /* vidioc_g_frequency - get tuner radio frequency */ |
| 417 | static int vidioc_g_frequency(struct file *file, void *priv, |
| 418 | struct v4l2_frequency *f) |
| 419 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 420 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 421 | int retval = 0; |
| 422 | |
| 423 | mutex_lock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 424 | |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 425 | /* safety check */ |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 426 | if (radio->removed) { |
| 427 | retval = -EIO; |
| 428 | goto unlock; |
| 429 | } |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 430 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 431 | f->type = V4L2_TUNER_RADIO; |
| 432 | f->frequency = radio->curfreq; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 433 | |
| 434 | unlock: |
| 435 | mutex_unlock(&radio->lock); |
| 436 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 437 | } |
| 438 | |
| 439 | /* vidioc_queryctrl - enumerate control items */ |
| 440 | static int vidioc_queryctrl(struct file *file, void *priv, |
| 441 | struct v4l2_queryctrl *qc) |
| 442 | { |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 443 | switch (qc->id) { |
| 444 | case V4L2_CID_AUDIO_MUTE: |
| 445 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 446 | } |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 447 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 448 | return -EINVAL; |
| 449 | } |
| 450 | |
| 451 | /* vidioc_g_ctrl - get the value of a control */ |
| 452 | static int vidioc_g_ctrl(struct file *file, void *priv, |
| 453 | struct v4l2_control *ctrl) |
| 454 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 455 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 456 | int retval = -EINVAL; |
| 457 | |
| 458 | mutex_lock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 459 | |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 460 | /* safety check */ |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 461 | if (radio->removed) { |
| 462 | retval = -EIO; |
| 463 | goto unlock; |
| 464 | } |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 465 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 466 | switch (ctrl->id) { |
| 467 | case V4L2_CID_AUDIO_MUTE: |
| 468 | ctrl->value = radio->muted; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 469 | retval = 0; |
| 470 | break; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 471 | } |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 472 | |
| 473 | unlock: |
| 474 | mutex_unlock(&radio->lock); |
| 475 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 476 | } |
| 477 | |
| 478 | /* vidioc_s_ctrl - set the value of a control */ |
| 479 | static int vidioc_s_ctrl(struct file *file, void *priv, |
| 480 | struct v4l2_control *ctrl) |
| 481 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 482 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 483 | int retval = -EINVAL; |
| 484 | |
| 485 | mutex_lock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 486 | |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 487 | /* safety check */ |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 488 | if (radio->removed) { |
| 489 | retval = -EIO; |
| 490 | goto unlock; |
| 491 | } |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 492 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 493 | switch (ctrl->id) { |
| 494 | case V4L2_CID_AUDIO_MUTE: |
| 495 | if (ctrl->value) { |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 496 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 497 | if (retval < 0) { |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 498 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 499 | "amradio_stop failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 500 | } |
| 501 | } else { |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 502 | retval = amradio_set_mute(radio, AMRADIO_START); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 503 | if (retval < 0) { |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 504 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 505 | "amradio_start failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 506 | } |
| 507 | } |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 508 | break; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 509 | } |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 510 | |
| 511 | unlock: |
| 512 | mutex_unlock(&radio->lock); |
| 513 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 514 | } |
| 515 | |
| 516 | /* vidioc_g_audio - get audio attributes */ |
| 517 | static int vidioc_g_audio(struct file *file, void *priv, |
| 518 | struct v4l2_audio *a) |
| 519 | { |
| 520 | if (a->index > 1) |
| 521 | return -EINVAL; |
| 522 | |
| 523 | strcpy(a->name, "Radio"); |
| 524 | a->capability = V4L2_AUDCAP_STEREO; |
| 525 | return 0; |
| 526 | } |
| 527 | |
| 528 | /* vidioc_s_audio - set audio attributes */ |
| 529 | static int vidioc_s_audio(struct file *file, void *priv, |
| 530 | struct v4l2_audio *a) |
| 531 | { |
| 532 | if (a->index != 0) |
| 533 | return -EINVAL; |
| 534 | return 0; |
| 535 | } |
| 536 | |
| 537 | /* vidioc_g_input - get input */ |
| 538 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
| 539 | { |
| 540 | *i = 0; |
| 541 | return 0; |
| 542 | } |
| 543 | |
| 544 | /* vidioc_s_input - set input */ |
| 545 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) |
| 546 | { |
| 547 | if (i != 0) |
| 548 | return -EINVAL; |
| 549 | return 0; |
| 550 | } |
| 551 | |
| 552 | /* open device - amradio_start() and amradio_setfreq() */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 553 | static int usb_amradio_open(struct file *file) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 554 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 555 | struct amradio_device *radio = vdev_to_amradio(video_devdata(file)); |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 556 | int retval = 0; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 557 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 558 | mutex_lock(&radio->lock); |
| 559 | |
| 560 | if (radio->removed) { |
| 561 | retval = -EIO; |
| 562 | goto unlock; |
| 563 | } |
Alexey Klimov | 0fabb78 | 2008-10-19 23:56:23 -0300 | [diff] [blame] | 564 | |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 565 | file->private_data = radio; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 566 | radio->users = 1; |
| 567 | radio->muted = 1; |
| 568 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 569 | retval = amradio_set_mute(radio, AMRADIO_START); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 570 | if (retval < 0) { |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 571 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 572 | "radio did not start up properly\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 573 | radio->users = 0; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 574 | goto unlock; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 575 | } |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 576 | |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 577 | retval = amradio_set_stereo(radio, WANT_STEREO); |
| 578 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 579 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 580 | "set stereo failed\n"); |
| 581 | |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 582 | retval = amradio_setfreq(radio, radio->curfreq); |
| 583 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 584 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 585 | "set frequency failed\n"); |
Alexey Klimov | 0fabb78 | 2008-10-19 23:56:23 -0300 | [diff] [blame] | 586 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 587 | unlock: |
| 588 | mutex_unlock(&radio->lock); |
| 589 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 590 | } |
| 591 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 592 | /*close device */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 593 | static int usb_amradio_close(struct file *file) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 594 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 595 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 596 | int retval = 0; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 597 | |
Alexey Klimov | 52433bb | 2009-02-05 08:57:19 -0300 | [diff] [blame] | 598 | mutex_lock(&radio->lock); |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 599 | |
| 600 | if (radio->removed) { |
| 601 | retval = -EIO; |
| 602 | goto unlock; |
| 603 | } |
| 604 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 605 | radio->users = 0; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 606 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 607 | if (!radio->removed) { |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 608 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 609 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 610 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 611 | "amradio_stop failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 612 | } |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 613 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 614 | unlock: |
| 615 | mutex_unlock(&radio->lock); |
| 616 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 617 | } |
| 618 | |
| 619 | /* Suspend device - stop device. Need to be checked and fixed */ |
| 620 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) |
| 621 | { |
| 622 | struct amradio_device *radio = usb_get_intfdata(intf); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 623 | int retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 624 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 625 | mutex_lock(&radio->lock); |
| 626 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 627 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 628 | if (retval < 0) |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 629 | dev_warn(&intf->dev, "amradio_stop failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 630 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 631 | dev_info(&intf->dev, "going into suspend..\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 632 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 633 | mutex_unlock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 634 | return 0; |
| 635 | } |
| 636 | |
| 637 | /* Resume device - start device. Need to be checked and fixed */ |
| 638 | static int usb_amradio_resume(struct usb_interface *intf) |
| 639 | { |
| 640 | struct amradio_device *radio = usb_get_intfdata(intf); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 641 | int retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 642 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 643 | mutex_lock(&radio->lock); |
| 644 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 645 | retval = amradio_set_mute(radio, AMRADIO_START); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 646 | if (retval < 0) |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 647 | dev_warn(&intf->dev, "amradio_start failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 648 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 649 | dev_info(&intf->dev, "coming out of suspend..\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 650 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 651 | mutex_unlock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 652 | return 0; |
| 653 | } |
| 654 | |
| 655 | /* File system interface */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 656 | static const struct v4l2_file_operations usb_amradio_fops = { |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 657 | .owner = THIS_MODULE, |
| 658 | .open = usb_amradio_open, |
| 659 | .release = usb_amradio_close, |
| 660 | .ioctl = video_ioctl2, |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 661 | }; |
| 662 | |
| 663 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { |
| 664 | .vidioc_querycap = vidioc_querycap, |
| 665 | .vidioc_g_tuner = vidioc_g_tuner, |
| 666 | .vidioc_s_tuner = vidioc_s_tuner, |
| 667 | .vidioc_g_frequency = vidioc_g_frequency, |
| 668 | .vidioc_s_frequency = vidioc_s_frequency, |
| 669 | .vidioc_queryctrl = vidioc_queryctrl, |
| 670 | .vidioc_g_ctrl = vidioc_g_ctrl, |
| 671 | .vidioc_s_ctrl = vidioc_s_ctrl, |
| 672 | .vidioc_g_audio = vidioc_g_audio, |
| 673 | .vidioc_s_audio = vidioc_s_audio, |
| 674 | .vidioc_g_input = vidioc_g_input, |
| 675 | .vidioc_s_input = vidioc_s_input, |
| 676 | }; |
| 677 | |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 678 | static void usb_amradio_video_device_release(struct video_device *videodev) |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 679 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame^] | 680 | struct amradio_device *radio = vdev_to_amradio(videodev); |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 681 | |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 682 | v4l2_device_unregister(&radio->v4l2_dev); |
| 683 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 684 | /* free rest memory */ |
| 685 | kfree(radio->buffer); |
| 686 | kfree(radio); |
| 687 | } |
| 688 | |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 689 | /* check if the device is present and register with v4l and usb if it is */ |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 690 | static int usb_amradio_probe(struct usb_interface *intf, |
| 691 | const struct usb_device_id *id) |
| 692 | { |
| 693 | struct amradio_device *radio; |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 694 | int retval = 0; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 695 | |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 696 | radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 697 | |
Alexey Klimov | 8edafcc | 2009-02-05 08:51:51 -0300 | [diff] [blame] | 698 | if (!radio) { |
| 699 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 700 | retval = -ENOMEM; |
| 701 | goto err; |
Alexey Klimov | 8edafcc | 2009-02-05 08:51:51 -0300 | [diff] [blame] | 702 | } |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 703 | |
| 704 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); |
| 705 | |
Alexey Klimov | 8edafcc | 2009-02-05 08:51:51 -0300 | [diff] [blame] | 706 | if (!radio->buffer) { |
| 707 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 708 | retval = -ENOMEM; |
| 709 | goto err_nobuf; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 710 | } |
| 711 | |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 712 | retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 713 | if (retval < 0) { |
| 714 | dev_err(&intf->dev, "couldn't register v4l2_device\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 715 | goto err_v4l2; |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 716 | } |
| 717 | |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 718 | strlcpy(radio->videodev.name, radio->v4l2_dev.name, |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 719 | sizeof(radio->videodev.name)); |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 720 | radio->videodev.v4l2_dev = &radio->v4l2_dev; |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 721 | radio->videodev.fops = &usb_amradio_fops; |
| 722 | radio->videodev.ioctl_ops = &usb_amradio_ioctl_ops; |
| 723 | radio->videodev.release = usb_amradio_video_device_release; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 724 | |
| 725 | radio->removed = 0; |
| 726 | radio->users = 0; |
| 727 | radio->usbdev = interface_to_usbdev(intf); |
| 728 | radio->curfreq = 95.16 * FREQ_MUL; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 729 | radio->stereo = -1; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 730 | |
| 731 | mutex_init(&radio->lock); |
| 732 | |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 733 | video_set_drvdata(&radio->videodev, radio); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 734 | |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 735 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, |
| 736 | radio_nr); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 737 | if (retval < 0) { |
Alexey Klimov | 65c51dc | 2009-02-05 08:49:58 -0300 | [diff] [blame] | 738 | dev_err(&intf->dev, "could not register video device\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 739 | goto err_vdev; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 740 | } |
| 741 | |
| 742 | usb_set_intfdata(intf, radio); |
| 743 | return 0; |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 744 | |
| 745 | err_vdev: |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 746 | v4l2_device_unregister(&radio->v4l2_dev); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 747 | err_v4l2: |
| 748 | kfree(radio->buffer); |
| 749 | err_nobuf: |
| 750 | kfree(radio); |
| 751 | err: |
| 752 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 753 | } |
| 754 | |
| 755 | static int __init amradio_init(void) |
| 756 | { |
| 757 | int retval = usb_register(&usb_amradio_driver); |
| 758 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 759 | pr_info(KBUILD_MODNAME |
| 760 | ": version " DRIVER_VERSION " " DRIVER_DESC "\n"); |
| 761 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 762 | if (retval) |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 763 | pr_err(KBUILD_MODNAME |
| 764 | ": usb_register failed. Error number %d\n", retval); |
| 765 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 766 | return retval; |
| 767 | } |
| 768 | |
| 769 | static void __exit amradio_exit(void) |
| 770 | { |
| 771 | usb_deregister(&usb_amradio_driver); |
| 772 | } |
| 773 | |
| 774 | module_init(amradio_init); |
| 775 | module_exit(amradio_exit); |
| 776 | |