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 | |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame^] | 88 | #define amradio_dev_err(dev, fmt, arg...) \ |
| 89 | dev_err(dev, MR800_DRIVER_NAME " - " fmt, ##arg) |
| 90 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 91 | /* Probably USB_TIMEOUT should be modified in module parameter */ |
| 92 | #define BUFFER_LENGTH 8 |
| 93 | #define USB_TIMEOUT 500 |
| 94 | |
| 95 | /* Frequency limits in MHz -- these are European values. For Japanese |
| 96 | devices, that would be 76 and 91. */ |
| 97 | #define FREQ_MIN 87.5 |
| 98 | #define FREQ_MAX 108.0 |
| 99 | #define FREQ_MUL 16000 |
| 100 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 101 | /* |
| 102 | * Commands that device should understand |
| 103 | * List isnt full and will be updated with implementation of new functions |
| 104 | */ |
Alexey Klimov | f7c1a38 | 2009-02-05 08:54:17 -0300 | [diff] [blame] | 105 | #define AMRADIO_SET_FREQ 0xa4 |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 106 | #define AMRADIO_SET_MUTE 0xab |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 107 | #define AMRADIO_SET_MONO 0xae |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 108 | |
| 109 | /* Comfortable defines for amradio_set_mute */ |
| 110 | #define AMRADIO_START 0x00 |
| 111 | #define AMRADIO_STOP 0x01 |
| 112 | |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 113 | /* Comfortable defines for amradio_set_stereo */ |
| 114 | #define WANT_STEREO 0x00 |
| 115 | #define WANT_MONO 0x01 |
| 116 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 117 | /* module parameter */ |
| 118 | static int radio_nr = -1; |
| 119 | module_param(radio_nr, int, 0); |
| 120 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); |
| 121 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 122 | static int usb_amradio_probe(struct usb_interface *intf, |
| 123 | const struct usb_device_id *id); |
| 124 | static void usb_amradio_disconnect(struct usb_interface *intf); |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 125 | static int usb_amradio_open(struct file *file); |
| 126 | static int usb_amradio_close(struct file *file); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 127 | static int usb_amradio_suspend(struct usb_interface *intf, |
| 128 | pm_message_t message); |
| 129 | static int usb_amradio_resume(struct usb_interface *intf); |
| 130 | |
| 131 | /* Data for one (physical) device */ |
| 132 | struct amradio_device { |
| 133 | /* reference to USB and video device */ |
| 134 | struct usb_device *usbdev; |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 135 | struct video_device videodev; |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 136 | struct v4l2_device v4l2_dev; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 137 | |
| 138 | unsigned char *buffer; |
| 139 | struct mutex lock; /* buffer locking */ |
| 140 | int curfreq; |
| 141 | int stereo; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 142 | int muted; |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame^] | 143 | int initialized; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 144 | }; |
| 145 | |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 146 | #define vdev_to_amradio(r) container_of(r, struct amradio_device, videodev) |
| 147 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 148 | /* USB Device ID List */ |
| 149 | static struct usb_device_id usb_amradio_device_table[] = { |
| 150 | {USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, |
| 151 | USB_CLASS_HID, 0, 0) }, |
| 152 | { } /* Terminating entry */ |
| 153 | }; |
| 154 | |
| 155 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); |
| 156 | |
| 157 | /* USB subsystem interface */ |
| 158 | static struct usb_driver usb_amradio_driver = { |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 159 | .name = MR800_DRIVER_NAME, |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 160 | .probe = usb_amradio_probe, |
| 161 | .disconnect = usb_amradio_disconnect, |
| 162 | .suspend = usb_amradio_suspend, |
| 163 | .resume = usb_amradio_resume, |
| 164 | .reset_resume = usb_amradio_resume, |
| 165 | .id_table = usb_amradio_device_table, |
Alexey Klimov | f2ce917 | 2008-12-27 21:31:49 -0300 | [diff] [blame] | 166 | .supports_autosuspend = 0, |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 167 | }; |
| 168 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 169 | /* switch on/off the radio. Send 8 bytes to device */ |
| 170 | static int amradio_set_mute(struct amradio_device *radio, char argument) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 171 | { |
| 172 | int retval; |
| 173 | int size; |
| 174 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 175 | BUG_ON(!mutex_is_locked(&radio->lock)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 176 | |
| 177 | radio->buffer[0] = 0x00; |
| 178 | radio->buffer[1] = 0x55; |
| 179 | radio->buffer[2] = 0xaa; |
| 180 | radio->buffer[3] = 0x00; |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 181 | radio->buffer[4] = AMRADIO_SET_MUTE; |
| 182 | radio->buffer[5] = argument; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 183 | radio->buffer[6] = 0x00; |
| 184 | radio->buffer[7] = 0x00; |
| 185 | |
| 186 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 187 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 188 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 189 | if (retval < 0 || size != BUFFER_LENGTH) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 190 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 191 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 192 | radio->muted = argument; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 193 | |
| 194 | return retval; |
| 195 | } |
| 196 | |
| 197 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ |
| 198 | static int amradio_setfreq(struct amradio_device *radio, int freq) |
| 199 | { |
| 200 | int retval; |
| 201 | int size; |
Alexey Klimov | f7c1a38 | 2009-02-05 08:54:17 -0300 | [diff] [blame] | 202 | unsigned short freq_send = 0x10 + (freq >> 3) / 25; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 203 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 204 | BUG_ON(!mutex_is_locked(&radio->lock)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 205 | |
| 206 | radio->buffer[0] = 0x00; |
| 207 | radio->buffer[1] = 0x55; |
| 208 | radio->buffer[2] = 0xaa; |
| 209 | radio->buffer[3] = 0x03; |
Alexey Klimov | f7c1a38 | 2009-02-05 08:54:17 -0300 | [diff] [blame] | 210 | radio->buffer[4] = AMRADIO_SET_FREQ; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 211 | radio->buffer[5] = 0x00; |
| 212 | radio->buffer[6] = 0x00; |
| 213 | radio->buffer[7] = 0x08; |
| 214 | |
| 215 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 216 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 217 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 218 | if (retval < 0 || size != BUFFER_LENGTH) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 219 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 220 | |
| 221 | /* frequency is calculated from freq_send and placed in first 2 bytes */ |
| 222 | radio->buffer[0] = (freq_send >> 8) & 0xff; |
| 223 | radio->buffer[1] = freq_send & 0xff; |
| 224 | radio->buffer[2] = 0x01; |
| 225 | radio->buffer[3] = 0x00; |
| 226 | radio->buffer[4] = 0x00; |
| 227 | /* 5 and 6 bytes of buffer already = 0x00 */ |
| 228 | radio->buffer[7] = 0x00; |
| 229 | |
| 230 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 231 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 232 | |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 233 | return retval; |
| 234 | } |
| 235 | |
| 236 | static int amradio_set_stereo(struct amradio_device *radio, char argument) |
| 237 | { |
| 238 | int retval; |
| 239 | int size; |
| 240 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 241 | BUG_ON(!mutex_is_locked(&radio->lock)); |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 242 | |
| 243 | radio->buffer[0] = 0x00; |
| 244 | radio->buffer[1] = 0x55; |
| 245 | radio->buffer[2] = 0xaa; |
| 246 | radio->buffer[3] = 0x00; |
| 247 | radio->buffer[4] = AMRADIO_SET_MONO; |
| 248 | radio->buffer[5] = argument; |
| 249 | radio->buffer[6] = 0x00; |
| 250 | radio->buffer[7] = 0x00; |
| 251 | |
| 252 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 253 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 254 | |
| 255 | if (retval < 0 || size != BUFFER_LENGTH) { |
| 256 | radio->stereo = -1; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 257 | return retval; |
| 258 | } |
| 259 | |
| 260 | radio->stereo = 1; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 261 | |
| 262 | return retval; |
| 263 | } |
| 264 | |
Alexey Klimov | 71f07d9 | 2009-02-05 08:58:31 -0300 | [diff] [blame] | 265 | /* Handle unplugging the device. |
| 266 | * We call video_unregister_device in any case. |
| 267 | * The last function called in this procedure is |
| 268 | * usb_amradio_device_release. |
| 269 | */ |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 270 | static void usb_amradio_disconnect(struct usb_interface *intf) |
| 271 | { |
| 272 | struct amradio_device *radio = usb_get_intfdata(intf); |
| 273 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 274 | mutex_lock(&radio->lock); |
David Ellingsworth | 26452bf | 2009-09-23 17:52:17 -0300 | [diff] [blame] | 275 | radio->usbdev = NULL; |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 276 | mutex_unlock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 277 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 278 | usb_set_intfdata(intf, NULL); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 279 | v4l2_device_disconnect(&radio->v4l2_dev); |
David Ellingsworth | 4e36165 | 2009-09-23 18:03:52 -0300 | [diff] [blame] | 280 | video_unregister_device(&radio->videodev); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | /* vidioc_querycap - query device capabilities */ |
| 284 | static int vidioc_querycap(struct file *file, void *priv, |
| 285 | struct v4l2_capability *v) |
| 286 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 287 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | c7181cf | 2009-01-25 20:05:58 -0300 | [diff] [blame] | 288 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 289 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
| 290 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); |
Alexey Klimov | c7181cf | 2009-01-25 20:05:58 -0300 | [diff] [blame] | 291 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 292 | v->version = RADIO_VERSION; |
| 293 | v->capabilities = V4L2_CAP_TUNER; |
| 294 | return 0; |
| 295 | } |
| 296 | |
| 297 | /* vidioc_g_tuner - get tuner attributes */ |
| 298 | static int vidioc_g_tuner(struct file *file, void *priv, |
| 299 | struct v4l2_tuner *v) |
| 300 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 301 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 302 | int retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 303 | |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 304 | if (v->index > 0) |
| 305 | return -EINVAL; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 306 | |
| 307 | /* TODO: Add function which look is signal stereo or not |
| 308 | * amradio_getstat(radio); |
| 309 | */ |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 310 | |
| 311 | /* we call amradio_set_stereo to set radio->stereo |
| 312 | * Honestly, amradio_getstat should cover this in future and |
| 313 | * amradio_set_stereo shouldn't be here |
| 314 | */ |
| 315 | retval = amradio_set_stereo(radio, WANT_STEREO); |
| 316 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 317 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 318 | "set stereo failed\n"); |
| 319 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 320 | strcpy(v->name, "FM"); |
| 321 | v->type = V4L2_TUNER_RADIO; |
| 322 | v->rangelow = FREQ_MIN * FREQ_MUL; |
| 323 | v->rangehigh = FREQ_MAX * FREQ_MUL; |
| 324 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; |
| 325 | v->capability = V4L2_TUNER_CAP_LOW; |
| 326 | if (radio->stereo) |
| 327 | v->audmode = V4L2_TUNER_MODE_STEREO; |
| 328 | else |
| 329 | v->audmode = V4L2_TUNER_MODE_MONO; |
| 330 | v->signal = 0xffff; /* Can't get the signal strength, sad.. */ |
| 331 | v->afc = 0; /* Don't know what is this */ |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 332 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 333 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 334 | } |
| 335 | |
| 336 | /* vidioc_s_tuner - set tuner attributes */ |
| 337 | static int vidioc_s_tuner(struct file *file, void *priv, |
| 338 | struct v4l2_tuner *v) |
| 339 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 340 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 341 | int retval = -EINVAL; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 342 | |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 343 | if (v->index > 0) |
| 344 | return -EINVAL; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 345 | |
| 346 | /* mono/stereo selector */ |
| 347 | switch (v->audmode) { |
| 348 | case V4L2_TUNER_MODE_MONO: |
| 349 | retval = amradio_set_stereo(radio, WANT_MONO); |
| 350 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 351 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 352 | "set mono failed\n"); |
| 353 | break; |
| 354 | case V4L2_TUNER_MODE_STEREO: |
| 355 | retval = amradio_set_stereo(radio, WANT_STEREO); |
| 356 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 357 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 358 | "set stereo failed\n"); |
| 359 | break; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 360 | } |
| 361 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 362 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 363 | } |
| 364 | |
| 365 | /* vidioc_s_frequency - set tuner radio frequency */ |
| 366 | static int vidioc_s_frequency(struct file *file, void *priv, |
| 367 | struct v4l2_frequency *f) |
| 368 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 369 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 370 | int retval = 0; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 371 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 372 | radio->curfreq = f->frequency; |
Alexey Klimov | 52433bb | 2009-02-05 08:57:19 -0300 | [diff] [blame] | 373 | |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 374 | retval = amradio_setfreq(radio, radio->curfreq); |
| 375 | if (retval < 0) |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 376 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 377 | "set frequency failed\n"); |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 378 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 379 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 380 | } |
| 381 | |
| 382 | /* vidioc_g_frequency - get tuner radio frequency */ |
| 383 | static int vidioc_g_frequency(struct file *file, void *priv, |
| 384 | struct v4l2_frequency *f) |
| 385 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 386 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 387 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 388 | f->type = V4L2_TUNER_RADIO; |
| 389 | f->frequency = radio->curfreq; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 390 | |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 391 | return 0; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 392 | } |
| 393 | |
| 394 | /* vidioc_queryctrl - enumerate control items */ |
| 395 | static int vidioc_queryctrl(struct file *file, void *priv, |
| 396 | struct v4l2_queryctrl *qc) |
| 397 | { |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 398 | switch (qc->id) { |
| 399 | case V4L2_CID_AUDIO_MUTE: |
| 400 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 401 | } |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 402 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 403 | return -EINVAL; |
| 404 | } |
| 405 | |
| 406 | /* vidioc_g_ctrl - get the value of a control */ |
| 407 | static int vidioc_g_ctrl(struct file *file, void *priv, |
| 408 | struct v4l2_control *ctrl) |
| 409 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 410 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 411 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 412 | switch (ctrl->id) { |
| 413 | case V4L2_CID_AUDIO_MUTE: |
| 414 | ctrl->value = radio->muted; |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 415 | return 0; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 416 | } |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 417 | |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 418 | return -EINVAL; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 419 | } |
| 420 | |
| 421 | /* vidioc_s_ctrl - set the value of a control */ |
| 422 | static int vidioc_s_ctrl(struct file *file, void *priv, |
| 423 | struct v4l2_control *ctrl) |
| 424 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 425 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 426 | int retval = -EINVAL; |
| 427 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 428 | switch (ctrl->id) { |
| 429 | case V4L2_CID_AUDIO_MUTE: |
| 430 | if (ctrl->value) { |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 431 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 432 | if (retval < 0) { |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 433 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 434 | "amradio_stop failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 435 | } |
| 436 | } else { |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 437 | retval = amradio_set_mute(radio, AMRADIO_START); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 438 | if (retval < 0) { |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 439 | amradio_dev_warn(&radio->videodev.dev, |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 440 | "amradio_start failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 441 | } |
| 442 | } |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 443 | break; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 444 | } |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 445 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 446 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 447 | } |
| 448 | |
| 449 | /* vidioc_g_audio - get audio attributes */ |
| 450 | static int vidioc_g_audio(struct file *file, void *priv, |
| 451 | struct v4l2_audio *a) |
| 452 | { |
| 453 | if (a->index > 1) |
| 454 | return -EINVAL; |
| 455 | |
| 456 | strcpy(a->name, "Radio"); |
| 457 | a->capability = V4L2_AUDCAP_STEREO; |
| 458 | return 0; |
| 459 | } |
| 460 | |
| 461 | /* vidioc_s_audio - set audio attributes */ |
| 462 | static int vidioc_s_audio(struct file *file, void *priv, |
| 463 | struct v4l2_audio *a) |
| 464 | { |
| 465 | if (a->index != 0) |
| 466 | return -EINVAL; |
| 467 | return 0; |
| 468 | } |
| 469 | |
| 470 | /* vidioc_g_input - get input */ |
| 471 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
| 472 | { |
| 473 | *i = 0; |
| 474 | return 0; |
| 475 | } |
| 476 | |
| 477 | /* vidioc_s_input - set input */ |
| 478 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) |
| 479 | { |
| 480 | if (i != 0) |
| 481 | return -EINVAL; |
| 482 | return 0; |
| 483 | } |
| 484 | |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame^] | 485 | static int usb_amradio_init(struct amradio_device *radio) |
| 486 | { |
| 487 | int retval; |
| 488 | |
| 489 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
| 490 | if (retval < 0) { |
| 491 | amradio_dev_warn(&radio->videodev.dev, "amradio_stop failed\n"); |
| 492 | goto out_err; |
| 493 | } |
| 494 | |
| 495 | retval = amradio_set_stereo(radio, WANT_STEREO); |
| 496 | if (retval < 0) { |
| 497 | amradio_dev_warn(&radio->videodev.dev, "set stereo failed\n"); |
| 498 | goto out_err; |
| 499 | } |
| 500 | |
| 501 | radio->initialized = 1; |
| 502 | goto out; |
| 503 | |
| 504 | out_err: |
| 505 | amradio_dev_err(&radio->videodev.dev, "initialization failed\n"); |
| 506 | out: |
| 507 | return retval; |
| 508 | } |
| 509 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 510 | /* open device - amradio_start() and amradio_setfreq() */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 511 | static int usb_amradio_open(struct file *file) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 512 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 513 | struct amradio_device *radio = vdev_to_amradio(video_devdata(file)); |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 514 | int retval = 0; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 515 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 516 | mutex_lock(&radio->lock); |
| 517 | |
David Ellingsworth | 26452bf | 2009-09-23 17:52:17 -0300 | [diff] [blame] | 518 | if (!radio->usbdev) { |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 519 | retval = -EIO; |
| 520 | goto unlock; |
| 521 | } |
Alexey Klimov | 0fabb78 | 2008-10-19 23:56:23 -0300 | [diff] [blame] | 522 | |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 523 | file->private_data = radio; |
Alexey Klimov | 0fabb78 | 2008-10-19 23:56:23 -0300 | [diff] [blame] | 524 | |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame^] | 525 | if (unlikely(!radio->initialized)) |
| 526 | retval = usb_amradio_init(radio); |
| 527 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 528 | unlock: |
| 529 | mutex_unlock(&radio->lock); |
| 530 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 531 | } |
| 532 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 533 | /*close device */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 534 | static int usb_amradio_close(struct file *file) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 535 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 536 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 537 | int retval = 0; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 538 | |
Alexey Klimov | 52433bb | 2009-02-05 08:57:19 -0300 | [diff] [blame] | 539 | mutex_lock(&radio->lock); |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 540 | |
David Ellingsworth | 8a7cd16 | 2009-09-23 18:09:01 -0300 | [diff] [blame] | 541 | if (!radio->usbdev) |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 542 | retval = -EIO; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 543 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 544 | mutex_unlock(&radio->lock); |
| 545 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 546 | } |
| 547 | |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 548 | static long usb_amradio_ioctl(struct file *file, unsigned int cmd, |
| 549 | unsigned long arg) |
| 550 | { |
| 551 | struct amradio_device *radio = file->private_data; |
| 552 | long retval = 0; |
| 553 | |
| 554 | mutex_lock(&radio->lock); |
| 555 | |
David Ellingsworth | 26452bf | 2009-09-23 17:52:17 -0300 | [diff] [blame] | 556 | if (!radio->usbdev) { |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 557 | retval = -EIO; |
| 558 | goto unlock; |
| 559 | } |
| 560 | |
| 561 | retval = video_ioctl2(file, cmd, arg); |
| 562 | |
| 563 | unlock: |
| 564 | mutex_unlock(&radio->lock); |
| 565 | return retval; |
| 566 | } |
| 567 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 568 | /* Suspend device - stop device. Need to be checked and fixed */ |
| 569 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) |
| 570 | { |
| 571 | struct amradio_device *radio = usb_get_intfdata(intf); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 572 | int retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 573 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 574 | mutex_lock(&radio->lock); |
| 575 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 576 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 577 | if (retval < 0) |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 578 | dev_warn(&intf->dev, "amradio_stop failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 579 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 580 | dev_info(&intf->dev, "going into suspend..\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 581 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 582 | mutex_unlock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 583 | return 0; |
| 584 | } |
| 585 | |
| 586 | /* Resume device - start device. Need to be checked and fixed */ |
| 587 | static int usb_amradio_resume(struct usb_interface *intf) |
| 588 | { |
| 589 | struct amradio_device *radio = usb_get_intfdata(intf); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 590 | int retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 591 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 592 | mutex_lock(&radio->lock); |
| 593 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 594 | retval = amradio_set_mute(radio, AMRADIO_START); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 595 | if (retval < 0) |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 596 | dev_warn(&intf->dev, "amradio_start failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 597 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 598 | dev_info(&intf->dev, "coming out of suspend..\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 599 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 600 | mutex_unlock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 601 | return 0; |
| 602 | } |
| 603 | |
| 604 | /* File system interface */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 605 | static const struct v4l2_file_operations usb_amradio_fops = { |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 606 | .owner = THIS_MODULE, |
| 607 | .open = usb_amradio_open, |
| 608 | .release = usb_amradio_close, |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 609 | .ioctl = usb_amradio_ioctl, |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 610 | }; |
| 611 | |
| 612 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { |
| 613 | .vidioc_querycap = vidioc_querycap, |
| 614 | .vidioc_g_tuner = vidioc_g_tuner, |
| 615 | .vidioc_s_tuner = vidioc_s_tuner, |
| 616 | .vidioc_g_frequency = vidioc_g_frequency, |
| 617 | .vidioc_s_frequency = vidioc_s_frequency, |
| 618 | .vidioc_queryctrl = vidioc_queryctrl, |
| 619 | .vidioc_g_ctrl = vidioc_g_ctrl, |
| 620 | .vidioc_s_ctrl = vidioc_s_ctrl, |
| 621 | .vidioc_g_audio = vidioc_g_audio, |
| 622 | .vidioc_s_audio = vidioc_s_audio, |
| 623 | .vidioc_g_input = vidioc_g_input, |
| 624 | .vidioc_s_input = vidioc_s_input, |
| 625 | }; |
| 626 | |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 627 | static void usb_amradio_video_device_release(struct video_device *videodev) |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 628 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 629 | struct amradio_device *radio = vdev_to_amradio(videodev); |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 630 | |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 631 | v4l2_device_unregister(&radio->v4l2_dev); |
| 632 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 633 | /* free rest memory */ |
| 634 | kfree(radio->buffer); |
| 635 | kfree(radio); |
| 636 | } |
| 637 | |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 638 | /* 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] | 639 | static int usb_amradio_probe(struct usb_interface *intf, |
| 640 | const struct usb_device_id *id) |
| 641 | { |
| 642 | struct amradio_device *radio; |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 643 | int retval = 0; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 644 | |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 645 | radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 646 | |
Alexey Klimov | 8edafcc | 2009-02-05 08:51:51 -0300 | [diff] [blame] | 647 | if (!radio) { |
| 648 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 649 | retval = -ENOMEM; |
| 650 | goto err; |
Alexey Klimov | 8edafcc | 2009-02-05 08:51:51 -0300 | [diff] [blame] | 651 | } |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 652 | |
| 653 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); |
| 654 | |
Alexey Klimov | 8edafcc | 2009-02-05 08:51:51 -0300 | [diff] [blame] | 655 | if (!radio->buffer) { |
| 656 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 657 | retval = -ENOMEM; |
| 658 | goto err_nobuf; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 659 | } |
| 660 | |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 661 | retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 662 | if (retval < 0) { |
| 663 | dev_err(&intf->dev, "couldn't register v4l2_device\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 664 | goto err_v4l2; |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 665 | } |
| 666 | |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 667 | strlcpy(radio->videodev.name, radio->v4l2_dev.name, |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 668 | sizeof(radio->videodev.name)); |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 669 | radio->videodev.v4l2_dev = &radio->v4l2_dev; |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 670 | radio->videodev.fops = &usb_amradio_fops; |
| 671 | radio->videodev.ioctl_ops = &usb_amradio_ioctl_ops; |
| 672 | radio->videodev.release = usb_amradio_video_device_release; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 673 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 674 | radio->usbdev = interface_to_usbdev(intf); |
| 675 | radio->curfreq = 95.16 * FREQ_MUL; |
| 676 | |
| 677 | mutex_init(&radio->lock); |
| 678 | |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 679 | video_set_drvdata(&radio->videodev, radio); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 680 | |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 681 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, |
| 682 | radio_nr); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 683 | if (retval < 0) { |
Alexey Klimov | 65c51dc | 2009-02-05 08:49:58 -0300 | [diff] [blame] | 684 | dev_err(&intf->dev, "could not register video device\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 685 | goto err_vdev; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 686 | } |
| 687 | |
| 688 | usb_set_intfdata(intf, radio); |
| 689 | return 0; |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 690 | |
| 691 | err_vdev: |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 692 | v4l2_device_unregister(&radio->v4l2_dev); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 693 | err_v4l2: |
| 694 | kfree(radio->buffer); |
| 695 | err_nobuf: |
| 696 | kfree(radio); |
| 697 | err: |
| 698 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 699 | } |
| 700 | |
| 701 | static int __init amradio_init(void) |
| 702 | { |
| 703 | int retval = usb_register(&usb_amradio_driver); |
| 704 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 705 | pr_info(KBUILD_MODNAME |
| 706 | ": version " DRIVER_VERSION " " DRIVER_DESC "\n"); |
| 707 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 708 | if (retval) |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 709 | pr_err(KBUILD_MODNAME |
| 710 | ": usb_register failed. Error number %d\n", retval); |
| 711 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 712 | return retval; |
| 713 | } |
| 714 | |
| 715 | static void __exit amradio_exit(void) |
| 716 | { |
| 717 | usb_deregister(&usb_amradio_driver); |
| 718 | } |
| 719 | |
| 720 | module_init(amradio_init); |
| 721 | module_exit(amradio_exit); |
| 722 | |