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. |
André Goddard Rosa | af901ca | 2009-11-14 13:09:05 -0200 | [diff] [blame] | 31 | * Probably, this driver could be improved through using their |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 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; |
Oliver Neukum | d89ce0d | 2009-11-09 19:09:49 -0300 | [diff] [blame] | 135 | struct usb_interface *intf; |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 136 | struct video_device videodev; |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 137 | struct v4l2_device v4l2_dev; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 138 | |
| 139 | unsigned char *buffer; |
| 140 | struct mutex lock; /* buffer locking */ |
| 141 | int curfreq; |
| 142 | int stereo; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 143 | int muted; |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame] | 144 | int initialized; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 145 | }; |
| 146 | |
Hans Verkuil | a2bdc5e | 2010-05-02 05:36:32 -0300 | [diff] [blame] | 147 | static inline struct amradio_device *to_amradio_dev(struct v4l2_device *v4l2_dev) |
| 148 | { |
| 149 | return container_of(v4l2_dev, struct amradio_device, v4l2_dev); |
| 150 | } |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 151 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 152 | /* USB Device ID List */ |
| 153 | static struct usb_device_id usb_amradio_device_table[] = { |
| 154 | {USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT, |
| 155 | USB_CLASS_HID, 0, 0) }, |
| 156 | { } /* Terminating entry */ |
| 157 | }; |
| 158 | |
| 159 | MODULE_DEVICE_TABLE(usb, usb_amradio_device_table); |
| 160 | |
| 161 | /* USB subsystem interface */ |
| 162 | static struct usb_driver usb_amradio_driver = { |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 163 | .name = MR800_DRIVER_NAME, |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 164 | .probe = usb_amradio_probe, |
| 165 | .disconnect = usb_amradio_disconnect, |
| 166 | .suspend = usb_amradio_suspend, |
| 167 | .resume = usb_amradio_resume, |
| 168 | .reset_resume = usb_amradio_resume, |
| 169 | .id_table = usb_amradio_device_table, |
Oliver Neukum | d89ce0d | 2009-11-09 19:09:49 -0300 | [diff] [blame] | 170 | .supports_autosuspend = 1, |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 171 | }; |
| 172 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 173 | /* switch on/off the radio. Send 8 bytes to device */ |
| 174 | static int amradio_set_mute(struct amradio_device *radio, char argument) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 175 | { |
| 176 | int retval; |
| 177 | int size; |
| 178 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 179 | radio->buffer[0] = 0x00; |
| 180 | radio->buffer[1] = 0x55; |
| 181 | radio->buffer[2] = 0xaa; |
| 182 | radio->buffer[3] = 0x00; |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 183 | radio->buffer[4] = AMRADIO_SET_MUTE; |
| 184 | radio->buffer[5] = argument; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 185 | radio->buffer[6] = 0x00; |
| 186 | radio->buffer[7] = 0x00; |
| 187 | |
| 188 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 189 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 190 | |
Alexey Klimov | e57458d | 2009-02-05 09:00:03 -0300 | [diff] [blame] | 191 | if (retval < 0 || size != BUFFER_LENGTH) { |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 192 | amradio_dev_warn(&radio->videodev.dev, "set mute failed\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 193 | return retval; |
| 194 | } |
| 195 | |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 196 | radio->muted = argument; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 197 | |
| 198 | return retval; |
| 199 | } |
| 200 | |
| 201 | /* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */ |
| 202 | static int amradio_setfreq(struct amradio_device *radio, int freq) |
| 203 | { |
| 204 | int retval; |
| 205 | int size; |
Alexey Klimov | f7c1a38 | 2009-02-05 08:54:17 -0300 | [diff] [blame] | 206 | unsigned short freq_send = 0x10 + (freq >> 3) / 25; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 207 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 208 | radio->buffer[0] = 0x00; |
| 209 | radio->buffer[1] = 0x55; |
| 210 | radio->buffer[2] = 0xaa; |
| 211 | radio->buffer[3] = 0x03; |
Alexey Klimov | f7c1a38 | 2009-02-05 08:54:17 -0300 | [diff] [blame] | 212 | radio->buffer[4] = AMRADIO_SET_FREQ; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 213 | radio->buffer[5] = 0x00; |
| 214 | radio->buffer[6] = 0x00; |
| 215 | radio->buffer[7] = 0x08; |
| 216 | |
| 217 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 218 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 219 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 220 | if (retval < 0 || size != BUFFER_LENGTH) |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 221 | goto out_err; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 222 | |
| 223 | /* frequency is calculated from freq_send and placed in first 2 bytes */ |
| 224 | radio->buffer[0] = (freq_send >> 8) & 0xff; |
| 225 | radio->buffer[1] = freq_send & 0xff; |
| 226 | radio->buffer[2] = 0x01; |
| 227 | radio->buffer[3] = 0x00; |
| 228 | radio->buffer[4] = 0x00; |
| 229 | /* 5 and 6 bytes of buffer already = 0x00 */ |
| 230 | radio->buffer[7] = 0x00; |
| 231 | |
| 232 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 233 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 234 | |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 235 | if (retval < 0 || size != BUFFER_LENGTH) |
| 236 | goto out_err; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 237 | |
David Ellingsworth | 798166d | 2009-09-23 18:31:26 -0300 | [diff] [blame] | 238 | radio->curfreq = freq; |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 239 | goto out; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 240 | |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 241 | out_err: |
| 242 | amradio_dev_warn(&radio->videodev.dev, "set frequency failed\n"); |
| 243 | out: |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 244 | return retval; |
| 245 | } |
| 246 | |
| 247 | static int amradio_set_stereo(struct amradio_device *radio, char argument) |
| 248 | { |
| 249 | int retval; |
| 250 | int size; |
| 251 | |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 252 | radio->buffer[0] = 0x00; |
| 253 | radio->buffer[1] = 0x55; |
| 254 | radio->buffer[2] = 0xaa; |
| 255 | radio->buffer[3] = 0x00; |
| 256 | radio->buffer[4] = AMRADIO_SET_MONO; |
| 257 | radio->buffer[5] = argument; |
| 258 | radio->buffer[6] = 0x00; |
| 259 | radio->buffer[7] = 0x00; |
| 260 | |
| 261 | retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2), |
| 262 | (void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT); |
| 263 | |
| 264 | if (retval < 0 || size != BUFFER_LENGTH) { |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 265 | amradio_dev_warn(&radio->videodev.dev, "set stereo failed\n"); |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 266 | return retval; |
| 267 | } |
| 268 | |
David Ellingsworth | 30dd450 | 2009-09-23 18:16:38 -0300 | [diff] [blame] | 269 | if (argument == WANT_STEREO) |
| 270 | radio->stereo = 1; |
| 271 | else |
| 272 | radio->stereo = 0; |
Alexey Klimov | 7f03a58 | 2009-01-25 20:07:28 -0300 | [diff] [blame] | 273 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 274 | return retval; |
| 275 | } |
| 276 | |
Alexey Klimov | 71f07d9 | 2009-02-05 08:58:31 -0300 | [diff] [blame] | 277 | /* Handle unplugging the device. |
| 278 | * We call video_unregister_device in any case. |
| 279 | * The last function called in this procedure is |
| 280 | * usb_amradio_device_release. |
| 281 | */ |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 282 | static void usb_amradio_disconnect(struct usb_interface *intf) |
| 283 | { |
Hans Verkuil | a2bdc5e | 2010-05-02 05:36:32 -0300 | [diff] [blame] | 284 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 285 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 286 | mutex_lock(&radio->lock); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 287 | v4l2_device_disconnect(&radio->v4l2_dev); |
David Ellingsworth | 4e36165 | 2009-09-23 18:03:52 -0300 | [diff] [blame] | 288 | video_unregister_device(&radio->videodev); |
Hans Verkuil | 361ae54 | 2010-09-26 08:01:18 -0300 | [diff] [blame^] | 289 | mutex_unlock(&radio->lock); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | /* vidioc_querycap - query device capabilities */ |
| 293 | static int vidioc_querycap(struct file *file, void *priv, |
| 294 | struct v4l2_capability *v) |
| 295 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 296 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | c7181cf | 2009-01-25 20:05:58 -0300 | [diff] [blame] | 297 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 298 | strlcpy(v->driver, "radio-mr800", sizeof(v->driver)); |
| 299 | strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card)); |
Alexey Klimov | c7181cf | 2009-01-25 20:05:58 -0300 | [diff] [blame] | 300 | usb_make_path(radio->usbdev, v->bus_info, sizeof(v->bus_info)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 301 | v->version = RADIO_VERSION; |
| 302 | v->capabilities = V4L2_CAP_TUNER; |
| 303 | return 0; |
| 304 | } |
| 305 | |
| 306 | /* vidioc_g_tuner - get tuner attributes */ |
| 307 | static int vidioc_g_tuner(struct file *file, void *priv, |
| 308 | struct v4l2_tuner *v) |
| 309 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 310 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 311 | int retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 312 | |
| 313 | if (v->index > 0) |
| 314 | return -EINVAL; |
| 315 | |
| 316 | /* TODO: Add function which look is signal stereo or not |
| 317 | * amradio_getstat(radio); |
| 318 | */ |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 319 | |
| 320 | /* we call amradio_set_stereo to set radio->stereo |
| 321 | * Honestly, amradio_getstat should cover this in future and |
| 322 | * amradio_set_stereo shouldn't be here |
| 323 | */ |
| 324 | retval = amradio_set_stereo(radio, WANT_STEREO); |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 325 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 326 | strcpy(v->name, "FM"); |
| 327 | v->type = V4L2_TUNER_RADIO; |
| 328 | v->rangelow = FREQ_MIN * FREQ_MUL; |
| 329 | v->rangehigh = FREQ_MAX * FREQ_MUL; |
| 330 | v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; |
| 331 | v->capability = V4L2_TUNER_CAP_LOW; |
| 332 | if (radio->stereo) |
| 333 | v->audmode = V4L2_TUNER_MODE_STEREO; |
| 334 | else |
| 335 | v->audmode = V4L2_TUNER_MODE_MONO; |
| 336 | v->signal = 0xffff; /* Can't get the signal strength, sad.. */ |
| 337 | v->afc = 0; /* Don't know what is this */ |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 338 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 339 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | /* vidioc_s_tuner - set tuner attributes */ |
| 343 | static int vidioc_s_tuner(struct file *file, void *priv, |
| 344 | struct v4l2_tuner *v) |
| 345 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 346 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | eac000a | 2009-09-23 17:49:36 -0300 | [diff] [blame] | 347 | int retval = -EINVAL; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 348 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 349 | if (v->index > 0) |
| 350 | return -EINVAL; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 351 | |
| 352 | /* mono/stereo selector */ |
| 353 | switch (v->audmode) { |
| 354 | case V4L2_TUNER_MODE_MONO: |
| 355 | retval = amradio_set_stereo(radio, WANT_MONO); |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 356 | break; |
| 357 | case V4L2_TUNER_MODE_STEREO: |
| 358 | retval = amradio_set_stereo(radio, WANT_STEREO); |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 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; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 370 | |
Hans Verkuil | a3a9e28 | 2009-11-27 04:33:25 -0300 | [diff] [blame] | 371 | if (f->tuner != 0 || f->type != V4L2_TUNER_RADIO) |
| 372 | return -EINVAL; |
David Ellingsworth | 798166d | 2009-09-23 18:31:26 -0300 | [diff] [blame] | 373 | return amradio_setfreq(radio, f->frequency); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 374 | } |
| 375 | |
| 376 | /* vidioc_g_frequency - get tuner radio frequency */ |
| 377 | static int vidioc_g_frequency(struct file *file, void *priv, |
| 378 | struct v4l2_frequency *f) |
| 379 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 380 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 381 | |
Hans Verkuil | a3a9e28 | 2009-11-27 04:33:25 -0300 | [diff] [blame] | 382 | if (f->tuner != 0) |
| 383 | return -EINVAL; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 384 | f->type = V4L2_TUNER_RADIO; |
| 385 | f->frequency = radio->curfreq; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 386 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 387 | return 0; |
| 388 | } |
| 389 | |
| 390 | /* vidioc_queryctrl - enumerate control items */ |
| 391 | static int vidioc_queryctrl(struct file *file, void *priv, |
| 392 | struct v4l2_queryctrl *qc) |
| 393 | { |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 394 | switch (qc->id) { |
| 395 | case V4L2_CID_AUDIO_MUTE: |
| 396 | return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 397 | } |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 398 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 399 | return -EINVAL; |
| 400 | } |
| 401 | |
| 402 | /* vidioc_g_ctrl - get the value of a control */ |
| 403 | static int vidioc_g_ctrl(struct file *file, void *priv, |
| 404 | struct v4l2_control *ctrl) |
| 405 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 406 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 407 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 408 | switch (ctrl->id) { |
| 409 | case V4L2_CID_AUDIO_MUTE: |
| 410 | ctrl->value = radio->muted; |
| 411 | return 0; |
| 412 | } |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 413 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 414 | return -EINVAL; |
| 415 | } |
| 416 | |
| 417 | /* vidioc_s_ctrl - set the value of a control */ |
| 418 | static int vidioc_s_ctrl(struct file *file, void *priv, |
| 419 | struct v4l2_control *ctrl) |
| 420 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 421 | struct amradio_device *radio = file->private_data; |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 422 | int retval = -EINVAL; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 423 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 424 | switch (ctrl->id) { |
| 425 | case V4L2_CID_AUDIO_MUTE: |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 426 | if (ctrl->value) |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 427 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 428 | else |
Alexey Klimov | db82180 | 2009-02-05 08:53:02 -0300 | [diff] [blame] | 429 | retval = amradio_set_mute(radio, AMRADIO_START); |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 430 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 431 | break; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 432 | } |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 433 | |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 434 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 435 | } |
| 436 | |
| 437 | /* vidioc_g_audio - get audio attributes */ |
| 438 | static int vidioc_g_audio(struct file *file, void *priv, |
| 439 | struct v4l2_audio *a) |
| 440 | { |
| 441 | if (a->index > 1) |
| 442 | return -EINVAL; |
| 443 | |
| 444 | strcpy(a->name, "Radio"); |
| 445 | a->capability = V4L2_AUDCAP_STEREO; |
| 446 | return 0; |
| 447 | } |
| 448 | |
| 449 | /* vidioc_s_audio - set audio attributes */ |
| 450 | static int vidioc_s_audio(struct file *file, void *priv, |
| 451 | struct v4l2_audio *a) |
| 452 | { |
| 453 | if (a->index != 0) |
| 454 | return -EINVAL; |
| 455 | return 0; |
| 456 | } |
| 457 | |
| 458 | /* vidioc_g_input - get input */ |
| 459 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
| 460 | { |
| 461 | *i = 0; |
| 462 | return 0; |
| 463 | } |
| 464 | |
| 465 | /* vidioc_s_input - set input */ |
| 466 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) |
| 467 | { |
| 468 | if (i != 0) |
| 469 | return -EINVAL; |
| 470 | return 0; |
| 471 | } |
| 472 | |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame] | 473 | static int usb_amradio_init(struct amradio_device *radio) |
| 474 | { |
| 475 | int retval; |
| 476 | |
| 477 | retval = amradio_set_mute(radio, AMRADIO_STOP); |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 478 | if (retval) |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame] | 479 | goto out_err; |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame] | 480 | |
| 481 | retval = amradio_set_stereo(radio, WANT_STEREO); |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 482 | if (retval) |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame] | 483 | goto out_err; |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame] | 484 | |
| 485 | radio->initialized = 1; |
| 486 | goto out; |
| 487 | |
| 488 | out_err: |
| 489 | amradio_dev_err(&radio->videodev.dev, "initialization failed\n"); |
| 490 | out: |
| 491 | return retval; |
| 492 | } |
| 493 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 494 | /* open device - amradio_start() and amradio_setfreq() */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 495 | static int usb_amradio_open(struct file *file) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 496 | { |
Hans Verkuil | a2bdc5e | 2010-05-02 05:36:32 -0300 | [diff] [blame] | 497 | struct amradio_device *radio = video_drvdata(file); |
Hans Verkuil | 361ae54 | 2010-09-26 08:01:18 -0300 | [diff] [blame^] | 498 | int retval; |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 499 | |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 500 | file->private_data = radio; |
Oliver Neukum | d89ce0d | 2009-11-09 19:09:49 -0300 | [diff] [blame] | 501 | retval = usb_autopm_get_interface(radio->intf); |
| 502 | if (retval) |
Hans Verkuil | 361ae54 | 2010-09-26 08:01:18 -0300 | [diff] [blame^] | 503 | return retval; |
Alexey Klimov | 1bb16d7 | 2009-02-05 08:56:07 -0300 | [diff] [blame] | 504 | |
Oliver Neukum | d89ce0d | 2009-11-09 19:09:49 -0300 | [diff] [blame] | 505 | if (unlikely(!radio->initialized)) { |
David Ellingsworth | 502d501 | 2009-09-23 18:13:50 -0300 | [diff] [blame] | 506 | retval = usb_amradio_init(radio); |
Oliver Neukum | d89ce0d | 2009-11-09 19:09:49 -0300 | [diff] [blame] | 507 | if (retval) |
| 508 | usb_autopm_put_interface(radio->intf); |
| 509 | } |
David Ellingsworth | 4aebc28 | 2009-09-22 21:22:19 -0300 | [diff] [blame] | 510 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 511 | } |
| 512 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 513 | /*close device */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 514 | static int usb_amradio_close(struct file *file) |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 515 | { |
David Ellingsworth | ceb99e1 | 2009-09-23 17:45:31 -0300 | [diff] [blame] | 516 | struct amradio_device *radio = file->private_data; |
Alexey Klimov | 3480130 | 2008-11-19 00:36:29 -0300 | [diff] [blame] | 517 | |
Hans Verkuil | 361ae54 | 2010-09-26 08:01:18 -0300 | [diff] [blame^] | 518 | usb_autopm_put_interface(radio->intf); |
| 519 | return 0; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 520 | } |
| 521 | |
| 522 | /* Suspend device - stop device. Need to be checked and fixed */ |
| 523 | static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message) |
| 524 | { |
Hans Verkuil | a2bdc5e | 2010-05-02 05:36:32 -0300 | [diff] [blame] | 525 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 526 | |
David Ellingsworth | d8970e5 | 2009-09-23 18:24:47 -0300 | [diff] [blame] | 527 | if (!radio->muted && radio->initialized) { |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 528 | amradio_set_mute(radio, AMRADIO_STOP); |
David Ellingsworth | d8970e5 | 2009-09-23 18:24:47 -0300 | [diff] [blame] | 529 | radio->muted = 0; |
| 530 | } |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 531 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 532 | dev_info(&intf->dev, "going into suspend..\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 533 | return 0; |
| 534 | } |
| 535 | |
| 536 | /* Resume device - start device. Need to be checked and fixed */ |
| 537 | static int usb_amradio_resume(struct usb_interface *intf) |
| 538 | { |
Hans Verkuil | a2bdc5e | 2010-05-02 05:36:32 -0300 | [diff] [blame] | 539 | struct amradio_device *radio = to_amradio_dev(usb_get_intfdata(intf)); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 540 | |
David Ellingsworth | d8970e5 | 2009-09-23 18:24:47 -0300 | [diff] [blame] | 541 | if (unlikely(!radio->initialized)) |
Hans Verkuil | 361ae54 | 2010-09-26 08:01:18 -0300 | [diff] [blame^] | 542 | return 0; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 543 | |
David Ellingsworth | d8970e5 | 2009-09-23 18:24:47 -0300 | [diff] [blame] | 544 | if (radio->stereo) |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 545 | amradio_set_stereo(radio, WANT_STEREO); |
David Ellingsworth | d8970e5 | 2009-09-23 18:24:47 -0300 | [diff] [blame] | 546 | else |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 547 | amradio_set_stereo(radio, WANT_MONO); |
David Ellingsworth | d8970e5 | 2009-09-23 18:24:47 -0300 | [diff] [blame] | 548 | |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 549 | amradio_setfreq(radio, radio->curfreq); |
David Ellingsworth | d8970e5 | 2009-09-23 18:24:47 -0300 | [diff] [blame] | 550 | |
David Ellingsworth | 16a72f4 | 2009-09-23 18:28:02 -0300 | [diff] [blame] | 551 | if (!radio->muted) |
| 552 | amradio_set_mute(radio, AMRADIO_START); |
David Ellingsworth | d8970e5 | 2009-09-23 18:24:47 -0300 | [diff] [blame] | 553 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 554 | dev_info(&intf->dev, "coming out of suspend..\n"); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 555 | return 0; |
| 556 | } |
| 557 | |
| 558 | /* File system interface */ |
Hans Verkuil | bec4366 | 2008-12-30 06:58:20 -0300 | [diff] [blame] | 559 | static const struct v4l2_file_operations usb_amradio_fops = { |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 560 | .owner = THIS_MODULE, |
| 561 | .open = usb_amradio_open, |
| 562 | .release = usb_amradio_close, |
Hans Verkuil | 361ae54 | 2010-09-26 08:01:18 -0300 | [diff] [blame^] | 563 | .unlocked_ioctl = video_ioctl2, |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 564 | }; |
| 565 | |
| 566 | static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = { |
| 567 | .vidioc_querycap = vidioc_querycap, |
| 568 | .vidioc_g_tuner = vidioc_g_tuner, |
| 569 | .vidioc_s_tuner = vidioc_s_tuner, |
| 570 | .vidioc_g_frequency = vidioc_g_frequency, |
| 571 | .vidioc_s_frequency = vidioc_s_frequency, |
| 572 | .vidioc_queryctrl = vidioc_queryctrl, |
| 573 | .vidioc_g_ctrl = vidioc_g_ctrl, |
| 574 | .vidioc_s_ctrl = vidioc_s_ctrl, |
| 575 | .vidioc_g_audio = vidioc_g_audio, |
| 576 | .vidioc_s_audio = vidioc_s_audio, |
| 577 | .vidioc_g_input = vidioc_g_input, |
| 578 | .vidioc_s_input = vidioc_s_input, |
| 579 | }; |
| 580 | |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 581 | static void usb_amradio_video_device_release(struct video_device *videodev) |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 582 | { |
Hans Verkuil | a2bdc5e | 2010-05-02 05:36:32 -0300 | [diff] [blame] | 583 | struct amradio_device *radio = video_get_drvdata(videodev); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 584 | |
Alexey Klimov | f4e9043 | 2008-12-27 21:30:34 -0300 | [diff] [blame] | 585 | /* free rest memory */ |
| 586 | kfree(radio->buffer); |
| 587 | kfree(radio); |
| 588 | } |
| 589 | |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 590 | /* 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] | 591 | static int usb_amradio_probe(struct usb_interface *intf, |
| 592 | const struct usb_device_id *id) |
| 593 | { |
| 594 | struct amradio_device *radio; |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 595 | int retval = 0; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 596 | |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 597 | radio = kzalloc(sizeof(struct amradio_device), GFP_KERNEL); |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 598 | |
Alexey Klimov | 8edafcc | 2009-02-05 08:51:51 -0300 | [diff] [blame] | 599 | if (!radio) { |
| 600 | dev_err(&intf->dev, "kmalloc for amradio_device failed\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 601 | retval = -ENOMEM; |
| 602 | goto err; |
Alexey Klimov | 8edafcc | 2009-02-05 08:51:51 -0300 | [diff] [blame] | 603 | } |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 604 | |
| 605 | radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL); |
| 606 | |
Alexey Klimov | 8edafcc | 2009-02-05 08:51:51 -0300 | [diff] [blame] | 607 | if (!radio->buffer) { |
| 608 | dev_err(&intf->dev, "kmalloc for radio->buffer failed\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 609 | retval = -ENOMEM; |
| 610 | goto err_nobuf; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 611 | } |
| 612 | |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 613 | retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 614 | if (retval < 0) { |
| 615 | dev_err(&intf->dev, "couldn't register v4l2_device\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 616 | goto err_v4l2; |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 617 | } |
| 618 | |
Hans Verkuil | 361ae54 | 2010-09-26 08:01:18 -0300 | [diff] [blame^] | 619 | mutex_init(&radio->lock); |
| 620 | |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 621 | strlcpy(radio->videodev.name, radio->v4l2_dev.name, |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 622 | sizeof(radio->videodev.name)); |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 623 | radio->videodev.v4l2_dev = &radio->v4l2_dev; |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 624 | radio->videodev.fops = &usb_amradio_fops; |
| 625 | radio->videodev.ioctl_ops = &usb_amradio_ioctl_ops; |
| 626 | radio->videodev.release = usb_amradio_video_device_release; |
Hans Verkuil | 361ae54 | 2010-09-26 08:01:18 -0300 | [diff] [blame^] | 627 | radio->videodev.lock = &radio->lock; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 628 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 629 | radio->usbdev = interface_to_usbdev(intf); |
Oliver Neukum | d89ce0d | 2009-11-09 19:09:49 -0300 | [diff] [blame] | 630 | radio->intf = intf; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 631 | radio->curfreq = 95.16 * FREQ_MUL; |
| 632 | |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 633 | video_set_drvdata(&radio->videodev, radio); |
Alexey Klimov | b466248 | 2009-04-03 18:45:27 -0300 | [diff] [blame] | 634 | |
David Ellingsworth | 7a7d92e | 2009-09-22 21:37:30 -0300 | [diff] [blame] | 635 | retval = video_register_device(&radio->videodev, VFL_TYPE_RADIO, |
| 636 | radio_nr); |
Alexey Klimov | a5d6947 | 2009-02-05 08:48:43 -0300 | [diff] [blame] | 637 | if (retval < 0) { |
Alexey Klimov | 65c51dc | 2009-02-05 08:49:58 -0300 | [diff] [blame] | 638 | dev_err(&intf->dev, "could not register video device\n"); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 639 | goto err_vdev; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 640 | } |
| 641 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 642 | return 0; |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 643 | |
| 644 | err_vdev: |
David Ellingsworth | d1939e4 | 2009-09-22 21:48:43 -0300 | [diff] [blame] | 645 | v4l2_device_unregister(&radio->v4l2_dev); |
David Ellingsworth | 1b8bbb3 | 2009-09-22 21:43:19 -0300 | [diff] [blame] | 646 | err_v4l2: |
| 647 | kfree(radio->buffer); |
| 648 | err_nobuf: |
| 649 | kfree(radio); |
| 650 | err: |
| 651 | return retval; |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 652 | } |
| 653 | |
| 654 | static int __init amradio_init(void) |
| 655 | { |
| 656 | int retval = usb_register(&usb_amradio_driver); |
| 657 | |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 658 | pr_info(KBUILD_MODNAME |
| 659 | ": version " DRIVER_VERSION " " DRIVER_DESC "\n"); |
| 660 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 661 | if (retval) |
Alexey Klimov | e60b022 | 2008-11-04 15:02:36 -0300 | [diff] [blame] | 662 | pr_err(KBUILD_MODNAME |
| 663 | ": usb_register failed. Error number %d\n", retval); |
| 664 | |
Alexey Klimov | 2aa72f3 | 2008-10-01 09:40:59 -0300 | [diff] [blame] | 665 | return retval; |
| 666 | } |
| 667 | |
| 668 | static void __exit amradio_exit(void) |
| 669 | { |
| 670 | usb_deregister(&usb_amradio_driver); |
| 671 | } |
| 672 | |
| 673 | module_init(amradio_init); |
| 674 | module_exit(amradio_exit); |
| 675 | |