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78656acd TL |
1 | /* |
2 | * drivers/media/radio/radio-si470x.c | |
3 | * | |
4 | * Driver for USB radios for the Silicon Labs Si470x FM Radio Receivers: | |
5 | * - Silicon Labs USB FM Radio Reference Design | |
6 | * - ADS/Tech FM Radio Receiver (formerly Instant FM Music) (RDX-155-EF) | |
69df96c3 | 7 | * - KWorld USB FM Radio SnapMusic Mobile 700 (FM700) |
00ec8d07 | 8 | * - Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear) |
78656acd | 9 | * |
00ec8d07 | 10 | * Copyright (c) 2009 Tobias Lorenz <tobias.lorenz@gmx.net> |
78656acd TL |
11 | * |
12 | * This program is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU General Public License as published by | |
14 | * the Free Software Foundation; either version 2 of the License, or | |
15 | * (at your option) any later version. | |
16 | * | |
17 | * This program is distributed in the hope that it will be useful, | |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU General Public License for more details. | |
21 | * | |
22 | * You should have received a copy of the GNU General Public License | |
23 | * along with this program; if not, write to the Free Software | |
24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
25 | */ | |
26 | ||
27 | ||
28 | /* | |
29 | * History: | |
30 | * 2008-01-12 Tobias Lorenz <tobias.lorenz@gmx.net> | |
31 | * Version 1.0.0 | |
32 | * - First working version | |
00ec8d07 | 33 | * 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net> |
8bf5e5ca | 34 | * Version 1.0.1 |
78656acd TL |
35 | * - Improved error handling, every function now returns errno |
36 | * - Improved multi user access (start/mute/stop) | |
37 | * - Channel doesn't get lost anymore after start/mute/stop | |
38 | * - RDS support added (polling mode via interrupt EP 1) | |
39 | * - marked default module parameters with *value* | |
40 | * - switched from bit structs to bit masks | |
41 | * - header file cleaned and integrated | |
42 | * 2008-01-14 Tobias Lorenz <tobias.lorenz@gmx.net> | |
43 | * Version 1.0.2 | |
44 | * - hex values are now lower case | |
45 | * - commented USB ID for ADS/Tech moved on todo list | |
46 | * - blacklisted si470x in hid-quirks.c | |
47 | * - rds buffer handling functions integrated into *_work, *_read | |
48 | * - rds_command in si470x_poll exchanged against simple retval | |
49 | * - check for firmware version 15 | |
50 | * - code order and prototypes still remain the same | |
51 | * - spacing and bottom of band codes remain the same | |
8bf5e5ca TL |
52 | * 2008-01-16 Tobias Lorenz <tobias.lorenz@gmx.net> |
53 | * Version 1.0.3 | |
54 | * - code reordered to avoid function prototypes | |
55 | * - switch/case defaults are now more user-friendly | |
56 | * - unified comment style | |
57 | * - applied all checkpatch.pl v1.12 suggestions | |
58 | * except the warning about the too long lines with bit comments | |
59 | * - renamed FMRADIO to RADIO to cut line length (checkpatch.pl) | |
2fb88406 TL |
60 | * 2008-01-22 Tobias Lorenz <tobias.lorenz@gmx.net> |
61 | * Version 1.0.4 | |
62 | * - avoid poss. locking when doing copy_to_user which may sleep | |
63 | * - RDS is automatically activated on read now | |
64 | * - code cleaned of unnecessary rds_commands | |
65 | * - USB Vendor/Product ID for ADS/Tech FM Radio Receiver verified | |
66 | * (thanks to Guillaume RAMOUSSE) | |
0e3301ec TL |
67 | * 2008-01-27 Tobias Lorenz <tobias.lorenz@gmx.net> |
68 | * Version 1.0.5 | |
69 | * - number of seek_retries changed to tune_timeout | |
70 | * - fixed problem with incomplete tune operations by own buffers | |
5caf5134 | 71 | * - optimization of variables and printf types |
0e3301ec | 72 | * - improved error logging |
5caf5134 TL |
73 | * 2008-01-31 Tobias Lorenz <tobias.lorenz@gmx.net> |
74 | * Oliver Neukum <oliver@neukum.org> | |
75 | * Version 1.0.6 | |
76 | * - fixed coverity checker warnings in *_usb_driver_disconnect | |
77 | * - probe()/open() race by correct ordering in probe() | |
78 | * - DMA coherency rules by separate allocation of all buffers | |
79 | * - use of endianness macros | |
80 | * - abuse of spinlock, replaced by mutex | |
81 | * - racy handling of timer in disconnect, | |
82 | * replaced by delayed_work | |
83 | * - racy interruptible_sleep_on(), | |
84 | * replaced with wait_event_interruptible() | |
85 | * - handle signals in read() | |
57566ad2 TL |
86 | * 2008-02-08 Tobias Lorenz <tobias.lorenz@gmx.net> |
87 | * Oliver Neukum <oliver@neukum.org> | |
88 | * Version 1.0.7 | |
89 | * - usb autosuspend support | |
ce5829e5 | 90 | * - unplugging fixed |
6cc72658 TL |
91 | * 2008-05-07 Tobias Lorenz <tobias.lorenz@gmx.net> |
92 | * Version 1.0.8 | |
bbc8995f | 93 | * - hardware frequency seek support |
ace7d4bb | 94 | * - afc indication |
a7c850a0 | 95 | * - more safety checks, let si470x_get_freq return errno |
33632d47 | 96 | * - vidioc behavior corrected according to v4l2 spec |
69df96c3 AK |
97 | * 2008-10-20 Alexey Klimov <klimov.linux@gmail.com> |
98 | * - add support for KWorld USB FM Radio FM700 | |
99 | * - blacklisted KWorld radio in hid-core.c and hid-ids.h | |
5e6de7d9 ML |
100 | * 2008-12-03 Mark Lord <mlord@pobox.com> |
101 | * - add support for DealExtreme USB Radio | |
d807dec5 TL |
102 | * 2009-01-31 Bob Ross <pigiron@gmx.com> |
103 | * - correction of stereo detection/setting | |
104 | * - correction of signal strength indicator scaling | |
2f94fc46 TL |
105 | * 2009-01-31 Rick Bronson <rick@efn.org> |
106 | * Tobias Lorenz <tobias.lorenz@gmx.net> | |
107 | * - add LED status output | |
10711d07 | 108 | * - get HW/SW version from scratchpad |
78656acd TL |
109 | * |
110 | * ToDo: | |
78656acd | 111 | * - add firmware download/update support |
78656acd | 112 | * - RDS support: interrupt mode, instead of polling |
78656acd TL |
113 | */ |
114 | ||
8bf5e5ca | 115 | |
78656acd TL |
116 | /* driver definitions */ |
117 | #define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>" | |
118 | #define DRIVER_NAME "radio-si470x" | |
10711d07 | 119 | #define DRIVER_KERNEL_VERSION KERNEL_VERSION(1, 0, 9) |
78656acd TL |
120 | #define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver" |
121 | #define DRIVER_DESC "USB radio driver for Si470x FM Radio Receivers" | |
10711d07 | 122 | #define DRIVER_VERSION "1.0.9" |
78656acd TL |
123 | |
124 | ||
125 | /* kernel includes */ | |
126 | #include <linux/kernel.h> | |
127 | #include <linux/module.h> | |
128 | #include <linux/init.h> | |
129 | #include <linux/slab.h> | |
405f5571 | 130 | #include <linux/smp_lock.h> |
78656acd | 131 | #include <linux/input.h> |
78656acd TL |
132 | #include <linux/usb.h> |
133 | #include <linux/hid.h> | |
134 | #include <linux/version.h> | |
387d4477 | 135 | #include <linux/videodev2.h> |
5caf5134 | 136 | #include <linux/mutex.h> |
387d4477 | 137 | #include <media/v4l2-common.h> |
35ea11ff | 138 | #include <media/v4l2-ioctl.h> |
78656acd | 139 | #include <media/rds.h> |
5caf5134 | 140 | #include <asm/unaligned.h> |
78656acd TL |
141 | |
142 | ||
8bf5e5ca TL |
143 | /* USB Device ID List */ |
144 | static struct usb_device_id si470x_usb_driver_id_table[] = { | |
145 | /* Silicon Labs USB FM Radio Reference Design */ | |
374ab686 | 146 | { USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) }, |
2fb88406 | 147 | /* ADS/Tech FM Radio Receiver (formerly Instant FM Music) */ |
374ab686 | 148 | { USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) }, |
69df96c3 AK |
149 | /* KWorld USB FM Radio SnapMusic Mobile 700 (FM700) */ |
150 | { USB_DEVICE_AND_INTERFACE_INFO(0x1b80, 0xd700, USB_CLASS_HID, 0, 0) }, | |
00ec8d07 | 151 | /* Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear) */ |
5e6de7d9 | 152 | { USB_DEVICE_AND_INTERFACE_INFO(0x10c5, 0x819a, USB_CLASS_HID, 0, 0) }, |
8bf5e5ca TL |
153 | /* Terminating entry */ |
154 | { } | |
155 | }; | |
156 | MODULE_DEVICE_TABLE(usb, si470x_usb_driver_id_table); | |
157 | ||
158 | ||
159 | ||
160 | /************************************************************************** | |
161 | * Module Parameters | |
162 | **************************************************************************/ | |
163 | ||
78656acd TL |
164 | /* Radio Nr */ |
165 | static int radio_nr = -1; | |
374ab686 | 166 | module_param(radio_nr, int, 0444); |
78656acd TL |
167 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); |
168 | ||
169 | /* Spacing (kHz) */ | |
170 | /* 0: 200 kHz (USA, Australia) */ | |
171 | /* 1: 100 kHz (Europe, Japan) */ | |
172 | /* 2: 50 kHz */ | |
0e3301ec | 173 | static unsigned short space = 2; |
374ab686 TL |
174 | module_param(space, ushort, 0444); |
175 | MODULE_PARM_DESC(space, "Spacing: 0=200kHz 1=100kHz *2=50kHz*"); | |
78656acd TL |
176 | |
177 | /* Bottom of Band (MHz) */ | |
178 | /* 0: 87.5 - 108 MHz (USA, Europe)*/ | |
179 | /* 1: 76 - 108 MHz (Japan wide band) */ | |
180 | /* 2: 76 - 90 MHz (Japan) */ | |
0e3301ec | 181 | static unsigned short band = 1; |
374ab686 TL |
182 | module_param(band, ushort, 0444); |
183 | MODULE_PARM_DESC(band, "Band: 0=87.5..108MHz *1=76..108MHz* 2=76..90MHz"); | |
78656acd TL |
184 | |
185 | /* De-emphasis */ | |
186 | /* 0: 75 us (USA) */ | |
187 | /* 1: 50 us (Europe, Australia, Japan) */ | |
0e3301ec | 188 | static unsigned short de = 1; |
374ab686 TL |
189 | module_param(de, ushort, 0444); |
190 | MODULE_PARM_DESC(de, "De-emphasis: 0=75us *1=50us*"); | |
78656acd TL |
191 | |
192 | /* USB timeout */ | |
0e3301ec | 193 | static unsigned int usb_timeout = 500; |
374ab686 | 194 | module_param(usb_timeout, uint, 0644); |
78656acd TL |
195 | MODULE_PARM_DESC(usb_timeout, "USB timeout (ms): *500*"); |
196 | ||
0e3301ec TL |
197 | /* Tune timeout */ |
198 | static unsigned int tune_timeout = 3000; | |
374ab686 | 199 | module_param(tune_timeout, uint, 0644); |
0e3301ec | 200 | MODULE_PARM_DESC(tune_timeout, "Tune timeout: *3000*"); |
78656acd | 201 | |
bbc8995f TL |
202 | /* Seek timeout */ |
203 | static unsigned int seek_timeout = 5000; | |
374ab686 | 204 | module_param(seek_timeout, uint, 0644); |
bbc8995f TL |
205 | MODULE_PARM_DESC(seek_timeout, "Seek timeout: *5000*"); |
206 | ||
78656acd | 207 | /* RDS buffer blocks */ |
0e3301ec | 208 | static unsigned int rds_buf = 100; |
374ab686 | 209 | module_param(rds_buf, uint, 0444); |
78656acd TL |
210 | MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*"); |
211 | ||
212 | /* RDS maximum block errors */ | |
0e3301ec | 213 | static unsigned short max_rds_errors = 1; |
78656acd TL |
214 | /* 0 means 0 errors requiring correction */ |
215 | /* 1 means 1-2 errors requiring correction (used by original USBRadio.exe) */ | |
216 | /* 2 means 3-5 errors requiring correction */ | |
217 | /* 3 means 6+ errors or errors in checkword, correction not possible */ | |
374ab686 | 218 | module_param(max_rds_errors, ushort, 0644); |
78656acd TL |
219 | MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*"); |
220 | ||
221 | /* RDS poll frequency */ | |
0e3301ec | 222 | static unsigned int rds_poll_time = 40; |
78656acd | 223 | /* 40 is used by the original USBRadio.exe */ |
2fb88406 | 224 | /* 50 is used by radio-cadet */ |
78656acd TL |
225 | /* 75 should be okay */ |
226 | /* 80 is the usual RDS receive interval */ | |
374ab686 | 227 | module_param(rds_poll_time, uint, 0644); |
78656acd TL |
228 | MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); |
229 | ||
230 | ||
231 | ||
232 | /************************************************************************** | |
233 | * Register Definitions | |
234 | **************************************************************************/ | |
8bf5e5ca TL |
235 | #define RADIO_REGISTER_SIZE 2 /* 16 register bit width */ |
236 | #define RADIO_REGISTER_NUM 16 /* DEVICEID ... RDSD */ | |
78656acd TL |
237 | #define RDS_REGISTER_NUM 6 /* STATUSRSSI ... RDSD */ |
238 | ||
239 | #define DEVICEID 0 /* Device ID */ | |
240 | #define DEVICEID_PN 0xf000 /* bits 15..12: Part Number */ | |
241 | #define DEVICEID_MFGID 0x0fff /* bits 11..00: Manufacturer ID */ | |
242 | ||
243 | #define CHIPID 1 /* Chip ID */ | |
244 | #define CHIPID_REV 0xfc00 /* bits 15..10: Chip Version */ | |
245 | #define CHIPID_DEV 0x0200 /* bits 09..09: Device */ | |
246 | #define CHIPID_FIRMWARE 0x01ff /* bits 08..00: Firmware Version */ | |
247 | ||
248 | #define POWERCFG 2 /* Power Configuration */ | |
249 | #define POWERCFG_DSMUTE 0x8000 /* bits 15..15: Softmute Disable */ | |
250 | #define POWERCFG_DMUTE 0x4000 /* bits 14..14: Mute Disable */ | |
251 | #define POWERCFG_MONO 0x2000 /* bits 13..13: Mono Select */ | |
252 | #define POWERCFG_RDSM 0x0800 /* bits 11..11: RDS Mode (Si4701 only) */ | |
253 | #define POWERCFG_SKMODE 0x0400 /* bits 10..10: Seek Mode */ | |
254 | #define POWERCFG_SEEKUP 0x0200 /* bits 09..09: Seek Direction */ | |
255 | #define POWERCFG_SEEK 0x0100 /* bits 08..08: Seek */ | |
256 | #define POWERCFG_DISABLE 0x0040 /* bits 06..06: Powerup Disable */ | |
257 | #define POWERCFG_ENABLE 0x0001 /* bits 00..00: Powerup Enable */ | |
258 | ||
259 | #define CHANNEL 3 /* Channel */ | |
260 | #define CHANNEL_TUNE 0x8000 /* bits 15..15: Tune */ | |
261 | #define CHANNEL_CHAN 0x03ff /* bits 09..00: Channel Select */ | |
262 | ||
263 | #define SYSCONFIG1 4 /* System Configuration 1 */ | |
264 | #define SYSCONFIG1_RDSIEN 0x8000 /* bits 15..15: RDS Interrupt Enable (Si4701 only) */ | |
265 | #define SYSCONFIG1_STCIEN 0x4000 /* bits 14..14: Seek/Tune Complete Interrupt Enable */ | |
266 | #define SYSCONFIG1_RDS 0x1000 /* bits 12..12: RDS Enable (Si4701 only) */ | |
267 | #define SYSCONFIG1_DE 0x0800 /* bits 11..11: De-emphasis (0=75us 1=50us) */ | |
268 | #define SYSCONFIG1_AGCD 0x0400 /* bits 10..10: AGC Disable */ | |
269 | #define SYSCONFIG1_BLNDADJ 0x00c0 /* bits 07..06: Stereo/Mono Blend Level Adjustment */ | |
270 | #define SYSCONFIG1_GPIO3 0x0030 /* bits 05..04: General Purpose I/O 3 */ | |
271 | #define SYSCONFIG1_GPIO2 0x000c /* bits 03..02: General Purpose I/O 2 */ | |
272 | #define SYSCONFIG1_GPIO1 0x0003 /* bits 01..00: General Purpose I/O 1 */ | |
273 | ||
274 | #define SYSCONFIG2 5 /* System Configuration 2 */ | |
275 | #define SYSCONFIG2_SEEKTH 0xff00 /* bits 15..08: RSSI Seek Threshold */ | |
276 | #define SYSCONFIG2_BAND 0x0080 /* bits 07..06: Band Select */ | |
277 | #define SYSCONFIG2_SPACE 0x0030 /* bits 05..04: Channel Spacing */ | |
278 | #define SYSCONFIG2_VOLUME 0x000f /* bits 03..00: Volume */ | |
279 | ||
280 | #define SYSCONFIG3 6 /* System Configuration 3 */ | |
281 | #define SYSCONFIG3_SMUTER 0xc000 /* bits 15..14: Softmute Attack/Recover Rate */ | |
282 | #define SYSCONFIG3_SMUTEA 0x3000 /* bits 13..12: Softmute Attenuation */ | |
283 | #define SYSCONFIG3_SKSNR 0x00f0 /* bits 07..04: Seek SNR Threshold */ | |
284 | #define SYSCONFIG3_SKCNT 0x000f /* bits 03..00: Seek FM Impulse Detection Threshold */ | |
285 | ||
286 | #define TEST1 7 /* Test 1 */ | |
287 | #define TEST1_AHIZEN 0x4000 /* bits 14..14: Audio High-Z Enable */ | |
288 | ||
289 | #define TEST2 8 /* Test 2 */ | |
290 | /* TEST2 only contains reserved bits */ | |
291 | ||
292 | #define BOOTCONFIG 9 /* Boot Configuration */ | |
293 | /* BOOTCONFIG only contains reserved bits */ | |
294 | ||
295 | #define STATUSRSSI 10 /* Status RSSI */ | |
296 | #define STATUSRSSI_RDSR 0x8000 /* bits 15..15: RDS Ready (Si4701 only) */ | |
297 | #define STATUSRSSI_STC 0x4000 /* bits 14..14: Seek/Tune Complete */ | |
298 | #define STATUSRSSI_SF 0x2000 /* bits 13..13: Seek Fail/Band Limit */ | |
299 | #define STATUSRSSI_AFCRL 0x1000 /* bits 12..12: AFC Rail */ | |
300 | #define STATUSRSSI_RDSS 0x0800 /* bits 11..11: RDS Synchronized (Si4701 only) */ | |
301 | #define STATUSRSSI_BLERA 0x0600 /* bits 10..09: RDS Block A Errors (Si4701 only) */ | |
302 | #define STATUSRSSI_ST 0x0100 /* bits 08..08: Stereo Indicator */ | |
303 | #define STATUSRSSI_RSSI 0x00ff /* bits 07..00: RSSI (Received Signal Strength Indicator) */ | |
304 | ||
305 | #define READCHAN 11 /* Read Channel */ | |
306 | #define READCHAN_BLERB 0xc000 /* bits 15..14: RDS Block D Errors (Si4701 only) */ | |
307 | #define READCHAN_BLERC 0x3000 /* bits 13..12: RDS Block C Errors (Si4701 only) */ | |
308 | #define READCHAN_BLERD 0x0c00 /* bits 11..10: RDS Block B Errors (Si4701 only) */ | |
309 | #define READCHAN_READCHAN 0x03ff /* bits 09..00: Read Channel */ | |
310 | ||
311 | #define RDSA 12 /* RDSA */ | |
312 | #define RDSA_RDSA 0xffff /* bits 15..00: RDS Block A Data (Si4701 only) */ | |
313 | ||
314 | #define RDSB 13 /* RDSB */ | |
315 | #define RDSB_RDSB 0xffff /* bits 15..00: RDS Block B Data (Si4701 only) */ | |
316 | ||
317 | #define RDSC 14 /* RDSC */ | |
318 | #define RDSC_RDSC 0xffff /* bits 15..00: RDS Block C Data (Si4701 only) */ | |
319 | ||
320 | #define RDSD 15 /* RDSD */ | |
321 | #define RDSD_RDSD 0xffff /* bits 15..00: RDS Block D Data (Si4701 only) */ | |
322 | ||
323 | ||
324 | ||
325 | /************************************************************************** | |
8bf5e5ca | 326 | * USB HID Reports |
78656acd TL |
327 | **************************************************************************/ |
328 | ||
329 | /* Reports 1-16 give direct read/write access to the 16 Si470x registers */ | |
330 | /* with the (REPORT_ID - 1) corresponding to the register address across USB */ | |
331 | /* endpoint 0 using GET_REPORT and SET_REPORT */ | |
8bf5e5ca | 332 | #define REGISTER_REPORT_SIZE (RADIO_REGISTER_SIZE + 1) |
78656acd TL |
333 | #define REGISTER_REPORT(reg) ((reg) + 1) |
334 | ||
335 | /* Report 17 gives direct read/write access to the entire Si470x register */ | |
336 | /* map across endpoint 0 using GET_REPORT and SET_REPORT */ | |
8bf5e5ca | 337 | #define ENTIRE_REPORT_SIZE (RADIO_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) |
78656acd TL |
338 | #define ENTIRE_REPORT 17 |
339 | ||
340 | /* Report 18 is used to send the lowest 6 Si470x registers up the HID */ | |
341 | /* interrupt endpoint 1 to Windows every 20 milliseconds for status */ | |
8bf5e5ca | 342 | #define RDS_REPORT_SIZE (RDS_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) |
78656acd TL |
343 | #define RDS_REPORT 18 |
344 | ||
345 | /* Report 19: LED state */ | |
346 | #define LED_REPORT_SIZE 3 | |
347 | #define LED_REPORT 19 | |
348 | ||
349 | /* Report 19: stream */ | |
350 | #define STREAM_REPORT_SIZE 3 | |
00ec8d07 | 351 | #define STREAM_REPORT 19 |
78656acd TL |
352 | |
353 | /* Report 20: scratch */ | |
354 | #define SCRATCH_PAGE_SIZE 63 | |
355 | #define SCRATCH_REPORT_SIZE (SCRATCH_PAGE_SIZE + 1) | |
356 | #define SCRATCH_REPORT 20 | |
357 | ||
358 | /* Reports 19-22: flash upgrade of the C8051F321 */ | |
10711d07 | 359 | #define WRITE_REPORT_SIZE 4 |
78656acd | 360 | #define WRITE_REPORT 19 |
10711d07 | 361 | #define FLASH_REPORT_SIZE 64 |
78656acd | 362 | #define FLASH_REPORT 20 |
10711d07 | 363 | #define CRC_REPORT_SIZE 3 |
78656acd | 364 | #define CRC_REPORT 21 |
10711d07 | 365 | #define RESPONSE_REPORT_SIZE 2 |
78656acd TL |
366 | #define RESPONSE_REPORT 22 |
367 | ||
368 | /* Report 23: currently unused, but can accept 60 byte reports on the HID */ | |
369 | /* interrupt out endpoint 2 every 1 millisecond */ | |
370 | #define UNUSED_REPORT 23 | |
371 | ||
372 | ||
373 | ||
374 | /************************************************************************** | |
8bf5e5ca | 375 | * Software/Hardware Versions |
78656acd | 376 | **************************************************************************/ |
8bf5e5ca TL |
377 | #define RADIO_SW_VERSION_NOT_BOOTLOADABLE 6 |
378 | #define RADIO_SW_VERSION 7 | |
379 | #define RADIO_SW_VERSION_CURRENT 15 | |
380 | #define RADIO_HW_VERSION 1 | |
78656acd TL |
381 | |
382 | #define SCRATCH_PAGE_SW_VERSION 1 | |
383 | #define SCRATCH_PAGE_HW_VERSION 2 | |
384 | ||
385 | ||
386 | ||
387 | /************************************************************************** | |
8bf5e5ca | 388 | * LED State Definitions |
78656acd TL |
389 | **************************************************************************/ |
390 | #define LED_COMMAND 0x35 | |
391 | ||
392 | #define NO_CHANGE_LED 0x00 | |
393 | #define ALL_COLOR_LED 0x01 /* streaming state */ | |
394 | #define BLINK_GREEN_LED 0x02 /* connect state */ | |
395 | #define BLINK_RED_LED 0x04 | |
396 | #define BLINK_ORANGE_LED 0x10 /* disconnect state */ | |
397 | #define SOLID_GREEN_LED 0x20 /* tuning/seeking state */ | |
398 | #define SOLID_RED_LED 0x40 /* bootload state */ | |
399 | #define SOLID_ORANGE_LED 0x80 | |
400 | ||
401 | ||
402 | ||
403 | /************************************************************************** | |
8bf5e5ca | 404 | * Stream State Definitions |
78656acd TL |
405 | **************************************************************************/ |
406 | #define STREAM_COMMAND 0x36 | |
407 | #define STREAM_VIDPID 0x00 | |
408 | #define STREAM_AUDIO 0xff | |
409 | ||
410 | ||
411 | ||
412 | /************************************************************************** | |
8bf5e5ca | 413 | * Bootloader / Flash Commands |
78656acd TL |
414 | **************************************************************************/ |
415 | ||
8bf5e5ca | 416 | /* unique id sent to bootloader and required to put into a bootload state */ |
78656acd TL |
417 | #define UNIQUE_BL_ID 0x34 |
418 | ||
8bf5e5ca | 419 | /* mask for the flash data */ |
78656acd TL |
420 | #define FLASH_DATA_MASK 0x55 |
421 | ||
8bf5e5ca | 422 | /* bootloader commands */ |
78656acd | 423 | #define GET_SW_VERSION_COMMAND 0x00 |
00ec8d07 | 424 | #define SET_PAGE_COMMAND 0x01 |
78656acd TL |
425 | #define ERASE_PAGE_COMMAND 0x02 |
426 | #define WRITE_PAGE_COMMAND 0x03 | |
427 | #define CRC_ON_PAGE_COMMAND 0x04 | |
428 | #define READ_FLASH_BYTE_COMMAND 0x05 | |
429 | #define RESET_DEVICE_COMMAND 0x06 | |
430 | #define GET_HW_VERSION_COMMAND 0x07 | |
431 | #define BLANK 0xff | |
432 | ||
8bf5e5ca | 433 | /* bootloader command responses */ |
78656acd TL |
434 | #define COMMAND_OK 0x01 |
435 | #define COMMAND_FAILED 0x02 | |
436 | #define COMMAND_PENDING 0x03 | |
437 | ||
78656acd TL |
438 | |
439 | ||
440 | /************************************************************************** | |
8bf5e5ca | 441 | * General Driver Definitions |
78656acd TL |
442 | **************************************************************************/ |
443 | ||
8bf5e5ca TL |
444 | /* |
445 | * si470x_device - private data | |
446 | */ | |
78656acd TL |
447 | struct si470x_device { |
448 | /* reference to USB and video device */ | |
449 | struct usb_device *usbdev; | |
57566ad2 | 450 | struct usb_interface *intf; |
78656acd TL |
451 | struct video_device *videodev; |
452 | ||
0e3301ec TL |
453 | /* driver management */ |
454 | unsigned int users; | |
ce5829e5 TL |
455 | unsigned char disconnected; |
456 | struct mutex disconnect_lock; | |
78656acd TL |
457 | |
458 | /* Silabs internal registers (0..15) */ | |
8bf5e5ca | 459 | unsigned short registers[RADIO_REGISTER_NUM]; |
78656acd TL |
460 | |
461 | /* RDS receive buffer */ | |
5caf5134 | 462 | struct delayed_work work; |
2fb88406 | 463 | wait_queue_head_t read_queue; |
5caf5134 | 464 | struct mutex lock; /* buffer locking */ |
2fb88406 | 465 | unsigned char *buffer; /* size is always multiple of three */ |
78656acd TL |
466 | unsigned int buf_size; |
467 | unsigned int rd_index; | |
468 | unsigned int wr_index; | |
10711d07 TL |
469 | |
470 | /* scratch page */ | |
471 | unsigned char software_version; | |
472 | unsigned char hardware_version; | |
78656acd TL |
473 | }; |
474 | ||
78656acd | 475 | |
8bf5e5ca TL |
476 | /* |
477 | * The frequency is set in units of 62.5 Hz when using V4L2_TUNER_CAP_LOW, | |
478 | * 62.5 kHz otherwise. | |
479 | * The tuner is able to have a channel spacing of 50, 100 or 200 kHz. | |
480 | * tuner->capability is therefore set to V4L2_TUNER_CAP_LOW | |
481 | * The FREQ_MUL is then: 1 MHz / 62.5 Hz = 16000 | |
482 | */ | |
78656acd TL |
483 | #define FREQ_MUL (1000000 / 62.5) |
484 | ||
78656acd TL |
485 | |
486 | ||
487 | /************************************************************************** | |
7f53b35c | 488 | * General Driver Functions - REGISTER_REPORTs |
78656acd TL |
489 | **************************************************************************/ |
490 | ||
491 | /* | |
492 | * si470x_get_report - receive a HID report | |
493 | */ | |
0e3301ec | 494 | static int si470x_get_report(struct si470x_device *radio, void *buf, int size) |
78656acd | 495 | { |
0e3301ec TL |
496 | unsigned char *report = (unsigned char *) buf; |
497 | int retval; | |
498 | ||
499 | retval = usb_control_msg(radio->usbdev, | |
78656acd TL |
500 | usb_rcvctrlpipe(radio->usbdev, 0), |
501 | HID_REQ_GET_REPORT, | |
502 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, | |
0e3301ec TL |
503 | report[0], 2, |
504 | buf, size, usb_timeout); | |
a7c850a0 | 505 | |
0e3301ec TL |
506 | if (retval < 0) |
507 | printk(KERN_WARNING DRIVER_NAME | |
508 | ": si470x_get_report: usb_control_msg returned %d\n", | |
509 | retval); | |
0e3301ec | 510 | return retval; |
78656acd TL |
511 | } |
512 | ||
513 | ||
514 | /* | |
515 | * si470x_set_report - send a HID report | |
516 | */ | |
0e3301ec | 517 | static int si470x_set_report(struct si470x_device *radio, void *buf, int size) |
78656acd | 518 | { |
0e3301ec TL |
519 | unsigned char *report = (unsigned char *) buf; |
520 | int retval; | |
521 | ||
522 | retval = usb_control_msg(radio->usbdev, | |
78656acd TL |
523 | usb_sndctrlpipe(radio->usbdev, 0), |
524 | HID_REQ_SET_REPORT, | |
525 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT, | |
0e3301ec TL |
526 | report[0], 2, |
527 | buf, size, usb_timeout); | |
a7c850a0 | 528 | |
0e3301ec TL |
529 | if (retval < 0) |
530 | printk(KERN_WARNING DRIVER_NAME | |
531 | ": si470x_set_report: usb_control_msg returned %d\n", | |
532 | retval); | |
0e3301ec | 533 | return retval; |
78656acd TL |
534 | } |
535 | ||
536 | ||
537 | /* | |
538 | * si470x_get_register - read register | |
539 | */ | |
540 | static int si470x_get_register(struct si470x_device *radio, int regnr) | |
541 | { | |
0e3301ec | 542 | unsigned char buf[REGISTER_REPORT_SIZE]; |
78656acd TL |
543 | int retval; |
544 | ||
0e3301ec TL |
545 | buf[0] = REGISTER_REPORT(regnr); |
546 | ||
547 | retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); | |
78656acd | 548 | |
78656acd | 549 | if (retval >= 0) |
5ad6b816 | 550 | radio->registers[regnr] = get_unaligned_be16(&buf[1]); |
78656acd TL |
551 | |
552 | return (retval < 0) ? -EINVAL : 0; | |
553 | } | |
554 | ||
555 | ||
556 | /* | |
557 | * si470x_set_register - write register | |
558 | */ | |
559 | static int si470x_set_register(struct si470x_device *radio, int regnr) | |
560 | { | |
0e3301ec | 561 | unsigned char buf[REGISTER_REPORT_SIZE]; |
78656acd TL |
562 | int retval; |
563 | ||
0e3301ec | 564 | buf[0] = REGISTER_REPORT(regnr); |
5ad6b816 | 565 | put_unaligned_be16(radio->registers[regnr], &buf[1]); |
78656acd | 566 | |
0e3301ec | 567 | retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); |
78656acd TL |
568 | |
569 | return (retval < 0) ? -EINVAL : 0; | |
570 | } | |
571 | ||
572 | ||
78656acd TL |
573 | /* |
574 | * si470x_set_chan - set the channel | |
575 | */ | |
0e3301ec | 576 | static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) |
78656acd | 577 | { |
0e3301ec TL |
578 | int retval; |
579 | unsigned long timeout; | |
580 | bool timed_out = 0; | |
78656acd TL |
581 | |
582 | /* start tuning */ | |
583 | radio->registers[CHANNEL] &= ~CHANNEL_CHAN; | |
584 | radio->registers[CHANNEL] |= CHANNEL_TUNE | chan; | |
585 | retval = si470x_set_register(radio, CHANNEL); | |
586 | if (retval < 0) | |
a7c850a0 | 587 | goto done; |
78656acd | 588 | |
a7c850a0 | 589 | /* wait till tune operation has completed */ |
0e3301ec | 590 | timeout = jiffies + msecs_to_jiffies(tune_timeout); |
78656acd TL |
591 | do { |
592 | retval = si470x_get_register(radio, STATUSRSSI); | |
593 | if (retval < 0) | |
a7c850a0 | 594 | goto stop; |
0e3301ec TL |
595 | timed_out = time_after(jiffies, timeout); |
596 | } while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) && | |
597 | (!timed_out)); | |
a7c850a0 TL |
598 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) |
599 | printk(KERN_WARNING DRIVER_NAME ": tune does not complete\n"); | |
0e3301ec | 600 | if (timed_out) |
78656acd | 601 | printk(KERN_WARNING DRIVER_NAME |
a7c850a0 | 602 | ": tune timed out after %u ms\n", tune_timeout); |
78656acd | 603 | |
a7c850a0 | 604 | stop: |
78656acd TL |
605 | /* stop tuning */ |
606 | radio->registers[CHANNEL] &= ~CHANNEL_TUNE; | |
a7c850a0 TL |
607 | retval = si470x_set_register(radio, CHANNEL); |
608 | ||
609 | done: | |
610 | return retval; | |
78656acd TL |
611 | } |
612 | ||
613 | ||
614 | /* | |
615 | * si470x_get_freq - get the frequency | |
616 | */ | |
6cc72658 | 617 | static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq) |
78656acd | 618 | { |
6cc72658 | 619 | unsigned int spacing, band_bottom; |
0e3301ec | 620 | unsigned short chan; |
78656acd TL |
621 | int retval; |
622 | ||
623 | /* Spacing (kHz) */ | |
a17c0019 | 624 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { |
8bf5e5ca | 625 | /* 0: 200 kHz (USA, Australia) */ |
a17c0019 TL |
626 | case 0: |
627 | spacing = 0.200 * FREQ_MUL; break; | |
8bf5e5ca | 628 | /* 1: 100 kHz (Europe, Japan) */ |
a17c0019 TL |
629 | case 1: |
630 | spacing = 0.100 * FREQ_MUL; break; | |
8bf5e5ca | 631 | /* 2: 50 kHz */ |
a17c0019 TL |
632 | default: |
633 | spacing = 0.050 * FREQ_MUL; break; | |
78656acd TL |
634 | }; |
635 | ||
636 | /* Bottom of Band (MHz) */ | |
a17c0019 | 637 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { |
8bf5e5ca | 638 | /* 0: 87.5 - 108 MHz (USA, Europe) */ |
a17c0019 TL |
639 | case 0: |
640 | band_bottom = 87.5 * FREQ_MUL; break; | |
8bf5e5ca | 641 | /* 1: 76 - 108 MHz (Japan wide band) */ |
a17c0019 TL |
642 | default: |
643 | band_bottom = 76 * FREQ_MUL; break; | |
8bf5e5ca | 644 | /* 2: 76 - 90 MHz (Japan) */ |
a17c0019 TL |
645 | case 2: |
646 | band_bottom = 76 * FREQ_MUL; break; | |
78656acd TL |
647 | }; |
648 | ||
649 | /* read channel */ | |
650 | retval = si470x_get_register(radio, READCHAN); | |
78656acd TL |
651 | chan = radio->registers[READCHAN] & READCHAN_READCHAN; |
652 | ||
653 | /* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */ | |
6cc72658 | 654 | *freq = chan * spacing + band_bottom; |
78656acd | 655 | |
6cc72658 | 656 | return retval; |
78656acd TL |
657 | } |
658 | ||
659 | ||
660 | /* | |
661 | * si470x_set_freq - set the frequency | |
662 | */ | |
0e3301ec | 663 | static int si470x_set_freq(struct si470x_device *radio, unsigned int freq) |
78656acd | 664 | { |
0e3301ec TL |
665 | unsigned int spacing, band_bottom; |
666 | unsigned short chan; | |
78656acd TL |
667 | |
668 | /* Spacing (kHz) */ | |
a17c0019 | 669 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { |
8bf5e5ca | 670 | /* 0: 200 kHz (USA, Australia) */ |
a17c0019 TL |
671 | case 0: |
672 | spacing = 0.200 * FREQ_MUL; break; | |
8bf5e5ca | 673 | /* 1: 100 kHz (Europe, Japan) */ |
a17c0019 TL |
674 | case 1: |
675 | spacing = 0.100 * FREQ_MUL; break; | |
8bf5e5ca | 676 | /* 2: 50 kHz */ |
a17c0019 TL |
677 | default: |
678 | spacing = 0.050 * FREQ_MUL; break; | |
78656acd TL |
679 | }; |
680 | ||
681 | /* Bottom of Band (MHz) */ | |
a17c0019 | 682 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { |
8bf5e5ca | 683 | /* 0: 87.5 - 108 MHz (USA, Europe) */ |
a17c0019 TL |
684 | case 0: |
685 | band_bottom = 87.5 * FREQ_MUL; break; | |
8bf5e5ca | 686 | /* 1: 76 - 108 MHz (Japan wide band) */ |
a17c0019 TL |
687 | default: |
688 | band_bottom = 76 * FREQ_MUL; break; | |
8bf5e5ca | 689 | /* 2: 76 - 90 MHz (Japan) */ |
a17c0019 TL |
690 | case 2: |
691 | band_bottom = 76 * FREQ_MUL; break; | |
78656acd TL |
692 | }; |
693 | ||
694 | /* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */ | |
695 | chan = (freq - band_bottom) / spacing; | |
696 | ||
697 | return si470x_set_chan(radio, chan); | |
698 | } | |
699 | ||
700 | ||
bbc8995f TL |
701 | /* |
702 | * si470x_set_seek - set seek | |
703 | */ | |
704 | static int si470x_set_seek(struct si470x_device *radio, | |
705 | unsigned int wrap_around, unsigned int seek_upward) | |
706 | { | |
707 | int retval = 0; | |
708 | unsigned long timeout; | |
709 | bool timed_out = 0; | |
710 | ||
711 | /* start seeking */ | |
712 | radio->registers[POWERCFG] |= POWERCFG_SEEK; | |
713 | if (wrap_around == 1) | |
714 | radio->registers[POWERCFG] &= ~POWERCFG_SKMODE; | |
715 | else | |
716 | radio->registers[POWERCFG] |= POWERCFG_SKMODE; | |
717 | if (seek_upward == 1) | |
718 | radio->registers[POWERCFG] |= POWERCFG_SEEKUP; | |
719 | else | |
720 | radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP; | |
721 | retval = si470x_set_register(radio, POWERCFG); | |
722 | if (retval < 0) | |
723 | goto done; | |
724 | ||
725 | /* wait till seek operation has completed */ | |
726 | timeout = jiffies + msecs_to_jiffies(seek_timeout); | |
727 | do { | |
728 | retval = si470x_get_register(radio, STATUSRSSI); | |
729 | if (retval < 0) | |
730 | goto stop; | |
731 | timed_out = time_after(jiffies, timeout); | |
732 | } while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) && | |
733 | (!timed_out)); | |
734 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) | |
735 | printk(KERN_WARNING DRIVER_NAME ": seek does not complete\n"); | |
736 | if (radio->registers[STATUSRSSI] & STATUSRSSI_SF) | |
737 | printk(KERN_WARNING DRIVER_NAME | |
738 | ": seek failed / band limit reached\n"); | |
739 | if (timed_out) | |
740 | printk(KERN_WARNING DRIVER_NAME | |
741 | ": seek timed out after %u ms\n", seek_timeout); | |
742 | ||
743 | stop: | |
744 | /* stop seeking */ | |
745 | radio->registers[POWERCFG] &= ~POWERCFG_SEEK; | |
746 | retval = si470x_set_register(radio, POWERCFG); | |
747 | ||
748 | done: | |
749 | /* try again, if timed out */ | |
750 | if ((retval == 0) && timed_out) | |
751 | retval = -EAGAIN; | |
752 | ||
753 | return retval; | |
754 | } | |
755 | ||
756 | ||
8bf5e5ca TL |
757 | /* |
758 | * si470x_start - switch on radio | |
759 | */ | |
760 | static int si470x_start(struct si470x_device *radio) | |
761 | { | |
762 | int retval; | |
763 | ||
764 | /* powercfg */ | |
765 | radio->registers[POWERCFG] = | |
766 | POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM; | |
767 | retval = si470x_set_register(radio, POWERCFG); | |
768 | if (retval < 0) | |
a7c850a0 | 769 | goto done; |
8bf5e5ca TL |
770 | |
771 | /* sysconfig 1 */ | |
2fb88406 | 772 | radio->registers[SYSCONFIG1] = SYSCONFIG1_DE; |
8bf5e5ca TL |
773 | retval = si470x_set_register(radio, SYSCONFIG1); |
774 | if (retval < 0) | |
a7c850a0 | 775 | goto done; |
8bf5e5ca TL |
776 | |
777 | /* sysconfig 2 */ | |
778 | radio->registers[SYSCONFIG2] = | |
a7c850a0 TL |
779 | (0x3f << 8) | /* SEEKTH */ |
780 | ((band << 6) & SYSCONFIG2_BAND) | /* BAND */ | |
781 | ((space << 4) & SYSCONFIG2_SPACE) | /* SPACE */ | |
782 | 15; /* VOLUME (max) */ | |
8bf5e5ca TL |
783 | retval = si470x_set_register(radio, SYSCONFIG2); |
784 | if (retval < 0) | |
a7c850a0 | 785 | goto done; |
8bf5e5ca TL |
786 | |
787 | /* reset last channel */ | |
a7c850a0 | 788 | retval = si470x_set_chan(radio, |
8bf5e5ca | 789 | radio->registers[CHANNEL] & CHANNEL_CHAN); |
a7c850a0 TL |
790 | |
791 | done: | |
792 | return retval; | |
8bf5e5ca TL |
793 | } |
794 | ||
795 | ||
796 | /* | |
797 | * si470x_stop - switch off radio | |
798 | */ | |
799 | static int si470x_stop(struct si470x_device *radio) | |
800 | { | |
2fb88406 TL |
801 | int retval; |
802 | ||
803 | /* sysconfig 1 */ | |
804 | radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; | |
805 | retval = si470x_set_register(radio, SYSCONFIG1); | |
806 | if (retval < 0) | |
a7c850a0 | 807 | goto done; |
2fb88406 | 808 | |
8bf5e5ca TL |
809 | /* powercfg */ |
810 | radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; | |
811 | /* POWERCFG_ENABLE has to automatically go low */ | |
812 | radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; | |
a7c850a0 TL |
813 | retval = si470x_set_register(radio, POWERCFG); |
814 | ||
815 | done: | |
816 | return retval; | |
8bf5e5ca TL |
817 | } |
818 | ||
819 | ||
2fb88406 TL |
820 | /* |
821 | * si470x_rds_on - switch on rds reception | |
822 | */ | |
823 | static int si470x_rds_on(struct si470x_device *radio) | |
824 | { | |
57566ad2 TL |
825 | int retval; |
826 | ||
2fb88406 | 827 | /* sysconfig 1 */ |
57566ad2 | 828 | mutex_lock(&radio->lock); |
2fb88406 | 829 | radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS; |
57566ad2 TL |
830 | retval = si470x_set_register(radio, SYSCONFIG1); |
831 | if (retval < 0) | |
832 | radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; | |
833 | mutex_unlock(&radio->lock); | |
834 | ||
835 | return retval; | |
2fb88406 TL |
836 | } |
837 | ||
838 | ||
8bf5e5ca | 839 | |
7f53b35c TL |
840 | /************************************************************************** |
841 | * General Driver Functions - ENTIRE_REPORT | |
842 | **************************************************************************/ | |
843 | ||
844 | /* | |
845 | * si470x_get_all_registers - read entire registers | |
846 | */ | |
847 | static int si470x_get_all_registers(struct si470x_device *radio) | |
848 | { | |
849 | unsigned char buf[ENTIRE_REPORT_SIZE]; | |
850 | int retval; | |
851 | unsigned char regnr; | |
852 | ||
853 | buf[0] = ENTIRE_REPORT; | |
854 | ||
855 | retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); | |
856 | ||
857 | if (retval >= 0) | |
858 | for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++) | |
859 | radio->registers[regnr] = get_unaligned_be16( | |
860 | &buf[regnr * RADIO_REGISTER_SIZE + 1]); | |
861 | ||
862 | return (retval < 0) ? -EINVAL : 0; | |
863 | } | |
864 | ||
865 | ||
866 | ||
867 | /************************************************************************** | |
868 | * General Driver Functions - RDS_REPORT | |
869 | **************************************************************************/ | |
870 | ||
871 | /* | |
872 | * si470x_get_rds_registers - read rds registers | |
873 | */ | |
874 | static int si470x_get_rds_registers(struct si470x_device *radio) | |
875 | { | |
876 | unsigned char buf[RDS_REPORT_SIZE]; | |
877 | int retval; | |
878 | int size; | |
879 | unsigned char regnr; | |
880 | ||
881 | buf[0] = RDS_REPORT; | |
882 | ||
883 | retval = usb_interrupt_msg(radio->usbdev, | |
884 | usb_rcvintpipe(radio->usbdev, 1), | |
885 | (void *) &buf, sizeof(buf), &size, usb_timeout); | |
886 | if (size != sizeof(buf)) | |
887 | printk(KERN_WARNING DRIVER_NAME ": si470x_get_rds_registers: " | |
888 | "return size differs: %d != %zu\n", size, sizeof(buf)); | |
889 | if (retval < 0) | |
890 | printk(KERN_WARNING DRIVER_NAME ": si470x_get_rds_registers: " | |
891 | "usb_interrupt_msg returned %d\n", retval); | |
892 | ||
893 | if (retval >= 0) | |
894 | for (regnr = 0; regnr < RDS_REGISTER_NUM; regnr++) | |
895 | radio->registers[STATUSRSSI + regnr] = | |
896 | get_unaligned_be16( | |
897 | &buf[regnr * RADIO_REGISTER_SIZE + 1]); | |
898 | ||
899 | return (retval < 0) ? -EINVAL : 0; | |
900 | } | |
901 | ||
902 | ||
903 | ||
10711d07 TL |
904 | /************************************************************************** |
905 | * General Driver Functions - LED_REPORT | |
906 | **************************************************************************/ | |
907 | ||
908 | /* | |
909 | * si470x_set_led_state - sets the led state | |
910 | */ | |
911 | static int si470x_set_led_state(struct si470x_device *radio, | |
912 | unsigned char led_state) | |
913 | { | |
914 | unsigned char buf[LED_REPORT_SIZE]; | |
915 | int retval; | |
916 | ||
917 | buf[0] = LED_REPORT; | |
918 | buf[1] = LED_COMMAND; | |
919 | buf[2] = led_state; | |
920 | ||
921 | retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); | |
922 | ||
923 | return (retval < 0) ? -EINVAL : 0; | |
924 | } | |
925 | ||
926 | ||
927 | ||
928 | /************************************************************************** | |
929 | * General Driver Functions - SCRATCH_REPORT | |
930 | **************************************************************************/ | |
931 | ||
932 | /* | |
933 | * si470x_get_scratch_versions - gets the scratch page and version infos | |
934 | */ | |
935 | static int si470x_get_scratch_page_versions(struct si470x_device *radio) | |
936 | { | |
937 | unsigned char buf[SCRATCH_REPORT_SIZE]; | |
938 | int retval; | |
939 | ||
940 | buf[0] = SCRATCH_REPORT; | |
941 | ||
942 | retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); | |
943 | ||
944 | if (retval < 0) | |
945 | printk(KERN_WARNING DRIVER_NAME ": si470x_get_scratch: " | |
946 | "si470x_get_report returned %d\n", retval); | |
947 | else { | |
948 | radio->software_version = buf[1]; | |
949 | radio->hardware_version = buf[2]; | |
950 | } | |
951 | ||
952 | return (retval < 0) ? -EINVAL : 0; | |
953 | } | |
954 | ||
955 | ||
956 | ||
8bf5e5ca TL |
957 | /************************************************************************** |
958 | * RDS Driver Functions | |
959 | **************************************************************************/ | |
78656acd TL |
960 | |
961 | /* | |
962 | * si470x_rds - rds processing function | |
963 | */ | |
964 | static void si470x_rds(struct si470x_device *radio) | |
965 | { | |
5caf5134 TL |
966 | unsigned char blocknum; |
967 | unsigned short bler; /* rds block errors */ | |
968 | unsigned short rds; | |
969 | unsigned char tmpbuf[3]; | |
970 | ||
2fb88406 | 971 | /* get rds blocks */ |
78656acd TL |
972 | if (si470x_get_rds_registers(radio) < 0) |
973 | return; | |
974 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSR) == 0) { | |
975 | /* No RDS group ready */ | |
976 | return; | |
977 | } | |
978 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSS) == 0) { | |
979 | /* RDS decoder not synchronized */ | |
980 | return; | |
981 | } | |
982 | ||
5caf5134 TL |
983 | /* copy all four RDS blocks to internal buffer */ |
984 | mutex_lock(&radio->lock); | |
985 | for (blocknum = 0; blocknum < 4; blocknum++) { | |
986 | switch (blocknum) { | |
987 | default: | |
988 | bler = (radio->registers[STATUSRSSI] & | |
989 | STATUSRSSI_BLERA) >> 9; | |
990 | rds = radio->registers[RDSA]; | |
991 | break; | |
992 | case 1: | |
993 | bler = (radio->registers[READCHAN] & | |
994 | READCHAN_BLERB) >> 14; | |
995 | rds = radio->registers[RDSB]; | |
996 | break; | |
997 | case 2: | |
998 | bler = (radio->registers[READCHAN] & | |
999 | READCHAN_BLERC) >> 12; | |
1000 | rds = radio->registers[RDSC]; | |
1001 | break; | |
1002 | case 3: | |
1003 | bler = (radio->registers[READCHAN] & | |
1004 | READCHAN_BLERD) >> 10; | |
1005 | rds = radio->registers[RDSD]; | |
1006 | break; | |
1007 | }; | |
1008 | ||
1009 | /* Fill the V4L2 RDS buffer */ | |
5ad6b816 | 1010 | put_unaligned_le16(rds, &tmpbuf); |
5caf5134 TL |
1011 | tmpbuf[2] = blocknum; /* offset name */ |
1012 | tmpbuf[2] |= blocknum << 3; /* received offset */ | |
1013 | if (bler > max_rds_errors) | |
1014 | tmpbuf[2] |= 0x80; /* uncorrectable errors */ | |
1015 | else if (bler > 0) | |
1016 | tmpbuf[2] |= 0x40; /* corrected error(s) */ | |
1017 | ||
1018 | /* copy RDS block to internal buffer */ | |
1019 | memcpy(&radio->buffer[radio->wr_index], &tmpbuf, 3); | |
1020 | radio->wr_index += 3; | |
1021 | ||
1022 | /* wrap write pointer */ | |
1023 | if (radio->wr_index >= radio->buf_size) | |
1024 | radio->wr_index = 0; | |
1025 | ||
1026 | /* check for overflow */ | |
1027 | if (radio->wr_index == radio->rd_index) { | |
1028 | /* increment and wrap read pointer */ | |
1029 | radio->rd_index += 3; | |
1030 | if (radio->rd_index >= radio->buf_size) | |
1031 | radio->rd_index = 0; | |
78656acd | 1032 | } |
78656acd | 1033 | } |
5caf5134 | 1034 | mutex_unlock(&radio->lock); |
78656acd | 1035 | |
2fb88406 TL |
1036 | /* wake up read queue */ |
1037 | if (radio->wr_index != radio->rd_index) | |
1038 | wake_up_interruptible(&radio->read_queue); | |
78656acd TL |
1039 | } |
1040 | ||
1041 | ||
78656acd | 1042 | /* |
2fb88406 | 1043 | * si470x_work - rds work function |
78656acd TL |
1044 | */ |
1045 | static void si470x_work(struct work_struct *work) | |
1046 | { | |
1047 | struct si470x_device *radio = container_of(work, struct si470x_device, | |
5caf5134 | 1048 | work.work); |
78656acd | 1049 | |
a7c850a0 | 1050 | /* safety checks */ |
ce5829e5 TL |
1051 | if (radio->disconnected) |
1052 | return; | |
2fb88406 | 1053 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) |
78656acd TL |
1054 | return; |
1055 | ||
1056 | si470x_rds(radio); | |
5caf5134 | 1057 | schedule_delayed_work(&radio->work, msecs_to_jiffies(rds_poll_time)); |
78656acd TL |
1058 | } |
1059 | ||
1060 | ||
1061 | ||
1062 | /************************************************************************** | |
8bf5e5ca | 1063 | * File Operations Interface |
78656acd TL |
1064 | **************************************************************************/ |
1065 | ||
1066 | /* | |
8bf5e5ca | 1067 | * si470x_fops_read - read RDS data |
78656acd | 1068 | */ |
8bf5e5ca TL |
1069 | static ssize_t si470x_fops_read(struct file *file, char __user *buf, |
1070 | size_t count, loff_t *ppos) | |
78656acd | 1071 | { |
c170ecf4 | 1072 | struct si470x_device *radio = video_drvdata(file); |
2fb88406 | 1073 | int retval = 0; |
5caf5134 | 1074 | unsigned int block_count = 0; |
78656acd | 1075 | |
2fb88406 TL |
1076 | /* switch on rds reception */ |
1077 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) { | |
1078 | si470x_rds_on(radio); | |
5caf5134 TL |
1079 | schedule_delayed_work(&radio->work, |
1080 | msecs_to_jiffies(rds_poll_time)); | |
2fb88406 | 1081 | } |
78656acd | 1082 | |
2fb88406 TL |
1083 | /* block if no new data available */ |
1084 | while (radio->wr_index == radio->rd_index) { | |
a7c850a0 TL |
1085 | if (file->f_flags & O_NONBLOCK) { |
1086 | retval = -EWOULDBLOCK; | |
1087 | goto done; | |
1088 | } | |
5caf5134 | 1089 | if (wait_event_interruptible(radio->read_queue, |
a7c850a0 TL |
1090 | radio->wr_index != radio->rd_index) < 0) { |
1091 | retval = -EINTR; | |
1092 | goto done; | |
1093 | } | |
78656acd TL |
1094 | } |
1095 | ||
2fb88406 TL |
1096 | /* calculate block count from byte count */ |
1097 | count /= 3; | |
1098 | ||
1099 | /* copy RDS block out of internal buffer and to user buffer */ | |
5caf5134 TL |
1100 | mutex_lock(&radio->lock); |
1101 | while (block_count < count) { | |
1102 | if (radio->rd_index == radio->wr_index) | |
1103 | break; | |
78656acd | 1104 | |
5caf5134 TL |
1105 | /* always transfer rds complete blocks */ |
1106 | if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3)) | |
1107 | /* retval = -EFAULT; */ | |
1108 | break; | |
2fb88406 | 1109 | |
5caf5134 TL |
1110 | /* increment and wrap read pointer */ |
1111 | radio->rd_index += 3; | |
1112 | if (radio->rd_index >= radio->buf_size) | |
1113 | radio->rd_index = 0; | |
78656acd | 1114 | |
5caf5134 TL |
1115 | /* increment counters */ |
1116 | block_count++; | |
1117 | buf += 3; | |
1118 | retval += 3; | |
78656acd | 1119 | } |
5caf5134 | 1120 | mutex_unlock(&radio->lock); |
78656acd | 1121 | |
a7c850a0 | 1122 | done: |
2fb88406 | 1123 | return retval; |
78656acd TL |
1124 | } |
1125 | ||
1126 | ||
1127 | /* | |
1128 | * si470x_fops_poll - poll RDS data | |
1129 | */ | |
1130 | static unsigned int si470x_fops_poll(struct file *file, | |
1131 | struct poll_table_struct *pts) | |
1132 | { | |
c170ecf4 | 1133 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1134 | int retval = 0; |
78656acd | 1135 | |
2fb88406 TL |
1136 | /* switch on rds reception */ |
1137 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) { | |
1138 | si470x_rds_on(radio); | |
5caf5134 TL |
1139 | schedule_delayed_work(&radio->work, |
1140 | msecs_to_jiffies(rds_poll_time)); | |
2fb88406 TL |
1141 | } |
1142 | ||
78656acd TL |
1143 | poll_wait(file, &radio->read_queue, pts); |
1144 | ||
2fb88406 | 1145 | if (radio->rd_index != radio->wr_index) |
a7c850a0 | 1146 | retval = POLLIN | POLLRDNORM; |
2fb88406 | 1147 | |
a7c850a0 | 1148 | return retval; |
78656acd TL |
1149 | } |
1150 | ||
1151 | ||
1152 | /* | |
1153 | * si470x_fops_open - file open | |
1154 | */ | |
bec43661 | 1155 | static int si470x_fops_open(struct file *file) |
78656acd | 1156 | { |
c170ecf4 | 1157 | struct si470x_device *radio = video_drvdata(file); |
57566ad2 | 1158 | int retval; |
78656acd | 1159 | |
d56dc612 | 1160 | lock_kernel(); |
78656acd | 1161 | radio->users++; |
57566ad2 TL |
1162 | |
1163 | retval = usb_autopm_get_interface(radio->intf); | |
1164 | if (retval < 0) { | |
1165 | radio->users--; | |
a7c850a0 TL |
1166 | retval = -EIO; |
1167 | goto done; | |
57566ad2 TL |
1168 | } |
1169 | ||
1170 | if (radio->users == 1) { | |
7f53b35c | 1171 | /* start radio */ |
57566ad2 TL |
1172 | retval = si470x_start(radio); |
1173 | if (retval < 0) | |
1174 | usb_autopm_put_interface(radio->intf); | |
57566ad2 | 1175 | } |
78656acd | 1176 | |
a7c850a0 | 1177 | done: |
d56dc612 | 1178 | unlock_kernel(); |
a7c850a0 | 1179 | return retval; |
78656acd TL |
1180 | } |
1181 | ||
1182 | ||
1183 | /* | |
1184 | * si470x_fops_release - file release | |
1185 | */ | |
bec43661 | 1186 | static int si470x_fops_release(struct file *file) |
78656acd | 1187 | { |
c170ecf4 | 1188 | struct si470x_device *radio = video_drvdata(file); |
ce5829e5 | 1189 | int retval = 0; |
78656acd | 1190 | |
a7c850a0 TL |
1191 | /* safety check */ |
1192 | if (!radio) { | |
1193 | retval = -ENODEV; | |
1194 | goto done; | |
1195 | } | |
78656acd | 1196 | |
ce5829e5 | 1197 | mutex_lock(&radio->disconnect_lock); |
78656acd TL |
1198 | radio->users--; |
1199 | if (radio->users == 0) { | |
ce5829e5 TL |
1200 | if (radio->disconnected) { |
1201 | video_unregister_device(radio->videodev); | |
1202 | kfree(radio->buffer); | |
1203 | kfree(radio); | |
a5ca3a1b | 1204 | goto unlock; |
ce5829e5 | 1205 | } |
03dea86d | 1206 | |
2fb88406 | 1207 | /* stop rds reception */ |
5caf5134 | 1208 | cancel_delayed_work_sync(&radio->work); |
78656acd | 1209 | |
2fb88406 TL |
1210 | /* cancel read processes */ |
1211 | wake_up_interruptible(&radio->read_queue); | |
1212 | ||
7f53b35c | 1213 | /* stop radio */ |
57566ad2 TL |
1214 | retval = si470x_stop(radio); |
1215 | usb_autopm_put_interface(radio->intf); | |
78656acd | 1216 | } |
a5ca3a1b | 1217 | unlock: |
ce5829e5 | 1218 | mutex_unlock(&radio->disconnect_lock); |
a7c850a0 | 1219 | done: |
ce5829e5 | 1220 | return retval; |
78656acd TL |
1221 | } |
1222 | ||
1223 | ||
8bf5e5ca TL |
1224 | /* |
1225 | * si470x_fops - file operations interface | |
1226 | */ | |
bec43661 | 1227 | static const struct v4l2_file_operations si470x_fops = { |
8bf5e5ca | 1228 | .owner = THIS_MODULE, |
8bf5e5ca TL |
1229 | .read = si470x_fops_read, |
1230 | .poll = si470x_fops_poll, | |
1231 | .ioctl = video_ioctl2, | |
8bf5e5ca TL |
1232 | .open = si470x_fops_open, |
1233 | .release = si470x_fops_release, | |
1234 | }; | |
1235 | ||
1236 | ||
1237 | ||
1238 | /************************************************************************** | |
1239 | * Video4Linux Interface | |
1240 | **************************************************************************/ | |
1241 | ||
1242 | /* | |
1243 | * si470x_v4l2_queryctrl - query control | |
1244 | */ | |
1245 | static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = { | |
8bf5e5ca TL |
1246 | { |
1247 | .id = V4L2_CID_AUDIO_VOLUME, | |
1248 | .type = V4L2_CTRL_TYPE_INTEGER, | |
1249 | .name = "Volume", | |
1250 | .minimum = 0, | |
1251 | .maximum = 15, | |
1252 | .step = 1, | |
1253 | .default_value = 15, | |
1254 | }, | |
8bf5e5ca TL |
1255 | { |
1256 | .id = V4L2_CID_AUDIO_MUTE, | |
1257 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1258 | .name = "Mute", | |
1259 | .minimum = 0, | |
1260 | .maximum = 1, | |
1261 | .step = 1, | |
1262 | .default_value = 1, | |
1263 | }, | |
8bf5e5ca TL |
1264 | }; |
1265 | ||
1266 | ||
78656acd TL |
1267 | /* |
1268 | * si470x_vidioc_querycap - query device capabilities | |
1269 | */ | |
1270 | static int si470x_vidioc_querycap(struct file *file, void *priv, | |
1271 | struct v4l2_capability *capability) | |
1272 | { | |
dc025d4a AK |
1273 | struct si470x_device *radio = video_drvdata(file); |
1274 | ||
78656acd TL |
1275 | strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver)); |
1276 | strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); | |
dc025d4a | 1277 | usb_make_path(radio->usbdev, capability->bus_info, sizeof(capability->bus_info)); |
0e3301ec | 1278 | capability->version = DRIVER_KERNEL_VERSION; |
bbc8995f TL |
1279 | capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | |
1280 | V4L2_CAP_TUNER | V4L2_CAP_RADIO; | |
78656acd TL |
1281 | |
1282 | return 0; | |
1283 | } | |
1284 | ||
1285 | ||
78656acd TL |
1286 | /* |
1287 | * si470x_vidioc_queryctrl - enumerate control items | |
1288 | */ | |
1289 | static int si470x_vidioc_queryctrl(struct file *file, void *priv, | |
1290 | struct v4l2_queryctrl *qc) | |
1291 | { | |
eb6e3b86 | 1292 | unsigned char i = 0; |
0e3301ec | 1293 | int retval = -EINVAL; |
78656acd | 1294 | |
eb6e3b86 TL |
1295 | /* abort if qc->id is below V4L2_CID_BASE */ |
1296 | if (qc->id < V4L2_CID_BASE) | |
a7c850a0 TL |
1297 | goto done; |
1298 | ||
eb6e3b86 | 1299 | /* search video control */ |
8bf5e5ca | 1300 | for (i = 0; i < ARRAY_SIZE(si470x_v4l2_queryctrl); i++) { |
a7c850a0 | 1301 | if (qc->id == si470x_v4l2_queryctrl[i].id) { |
8bf5e5ca | 1302 | memcpy(qc, &(si470x_v4l2_queryctrl[i]), sizeof(*qc)); |
eb6e3b86 | 1303 | retval = 0; /* found */ |
0e3301ec | 1304 | break; |
78656acd TL |
1305 | } |
1306 | } | |
a7c850a0 | 1307 | |
eb6e3b86 TL |
1308 | /* disable unsupported base controls */ |
1309 | /* to satisfy kradio and such apps */ | |
1310 | if ((retval == -EINVAL) && (qc->id < V4L2_CID_LASTP1)) { | |
1311 | qc->flags = V4L2_CTRL_FLAG_DISABLED; | |
1312 | retval = 0; | |
1313 | } | |
1314 | ||
a7c850a0 | 1315 | done: |
0e3301ec TL |
1316 | if (retval < 0) |
1317 | printk(KERN_WARNING DRIVER_NAME | |
a7c850a0 | 1318 | ": query controls failed with %d\n", retval); |
0e3301ec | 1319 | return retval; |
78656acd TL |
1320 | } |
1321 | ||
1322 | ||
1323 | /* | |
1324 | * si470x_vidioc_g_ctrl - get the value of a control | |
1325 | */ | |
1326 | static int si470x_vidioc_g_ctrl(struct file *file, void *priv, | |
1327 | struct v4l2_control *ctrl) | |
1328 | { | |
c170ecf4 | 1329 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1330 | int retval = 0; |
78656acd | 1331 | |
a7c850a0 TL |
1332 | /* safety checks */ |
1333 | if (radio->disconnected) { | |
1334 | retval = -EIO; | |
1335 | goto done; | |
1336 | } | |
03dea86d | 1337 | |
78656acd | 1338 | switch (ctrl->id) { |
8bf5e5ca TL |
1339 | case V4L2_CID_AUDIO_VOLUME: |
1340 | ctrl->value = radio->registers[SYSCONFIG2] & | |
1341 | SYSCONFIG2_VOLUME; | |
1342 | break; | |
1343 | case V4L2_CID_AUDIO_MUTE: | |
1344 | ctrl->value = ((radio->registers[POWERCFG] & | |
1345 | POWERCFG_DMUTE) == 0) ? 1 : 0; | |
1346 | break; | |
a7c850a0 TL |
1347 | default: |
1348 | retval = -EINVAL; | |
78656acd TL |
1349 | } |
1350 | ||
a7c850a0 TL |
1351 | done: |
1352 | if (retval < 0) | |
1353 | printk(KERN_WARNING DRIVER_NAME | |
1354 | ": get control failed with %d\n", retval); | |
1355 | return retval; | |
78656acd TL |
1356 | } |
1357 | ||
1358 | ||
1359 | /* | |
1360 | * si470x_vidioc_s_ctrl - set the value of a control | |
1361 | */ | |
1362 | static int si470x_vidioc_s_ctrl(struct file *file, void *priv, | |
1363 | struct v4l2_control *ctrl) | |
1364 | { | |
c170ecf4 | 1365 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1366 | int retval = 0; |
78656acd | 1367 | |
a7c850a0 TL |
1368 | /* safety checks */ |
1369 | if (radio->disconnected) { | |
1370 | retval = -EIO; | |
1371 | goto done; | |
1372 | } | |
03dea86d | 1373 | |
78656acd | 1374 | switch (ctrl->id) { |
8bf5e5ca TL |
1375 | case V4L2_CID_AUDIO_VOLUME: |
1376 | radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; | |
1377 | radio->registers[SYSCONFIG2] |= ctrl->value; | |
0e3301ec TL |
1378 | retval = si470x_set_register(radio, SYSCONFIG2); |
1379 | break; | |
8bf5e5ca TL |
1380 | case V4L2_CID_AUDIO_MUTE: |
1381 | if (ctrl->value == 1) | |
1382 | radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; | |
1383 | else | |
1384 | radio->registers[POWERCFG] |= POWERCFG_DMUTE; | |
0e3301ec TL |
1385 | retval = si470x_set_register(radio, POWERCFG); |
1386 | break; | |
1387 | default: | |
1388 | retval = -EINVAL; | |
78656acd | 1389 | } |
a7c850a0 TL |
1390 | |
1391 | done: | |
0e3301ec TL |
1392 | if (retval < 0) |
1393 | printk(KERN_WARNING DRIVER_NAME | |
1394 | ": set control failed with %d\n", retval); | |
0e3301ec | 1395 | return retval; |
78656acd TL |
1396 | } |
1397 | ||
1398 | ||
1399 | /* | |
1400 | * si470x_vidioc_g_audio - get audio attributes | |
1401 | */ | |
1402 | static int si470x_vidioc_g_audio(struct file *file, void *priv, | |
1403 | struct v4l2_audio *audio) | |
1404 | { | |
617f5333 TL |
1405 | /* driver constants */ |
1406 | audio->index = 0; | |
78656acd TL |
1407 | strcpy(audio->name, "Radio"); |
1408 | audio->capability = V4L2_AUDCAP_STEREO; | |
617f5333 | 1409 | audio->mode = 0; |
78656acd | 1410 | |
617f5333 | 1411 | return 0; |
78656acd TL |
1412 | } |
1413 | ||
1414 | ||
1415 | /* | |
1416 | * si470x_vidioc_g_tuner - get tuner attributes | |
1417 | */ | |
1418 | static int si470x_vidioc_g_tuner(struct file *file, void *priv, | |
1419 | struct v4l2_tuner *tuner) | |
1420 | { | |
c170ecf4 | 1421 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1422 | int retval = 0; |
78656acd | 1423 | |
a7c850a0 TL |
1424 | /* safety checks */ |
1425 | if (radio->disconnected) { | |
1426 | retval = -EIO; | |
1427 | goto done; | |
1428 | } | |
33632d47 | 1429 | if (tuner->index != 0) { |
a7c850a0 TL |
1430 | retval = -EINVAL; |
1431 | goto done; | |
1432 | } | |
78656acd | 1433 | |
78656acd TL |
1434 | retval = si470x_get_register(radio, STATUSRSSI); |
1435 | if (retval < 0) | |
a7c850a0 | 1436 | goto done; |
78656acd | 1437 | |
33632d47 | 1438 | /* driver constants */ |
78656acd | 1439 | strcpy(tuner->name, "FM"); |
33632d47 | 1440 | tuner->type = V4L2_TUNER_RADIO; |
73a529f9 | 1441 | tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; |
33632d47 | 1442 | |
a17c0019 TL |
1443 | /* range limits */ |
1444 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { | |
8bf5e5ca TL |
1445 | /* 0: 87.5 - 108 MHz (USA, Europe, default) */ |
1446 | default: | |
1447 | tuner->rangelow = 87.5 * FREQ_MUL; | |
1448 | tuner->rangehigh = 108 * FREQ_MUL; | |
1449 | break; | |
1450 | /* 1: 76 - 108 MHz (Japan wide band) */ | |
1451 | case 1 : | |
1452 | tuner->rangelow = 76 * FREQ_MUL; | |
1453 | tuner->rangehigh = 108 * FREQ_MUL; | |
1454 | break; | |
1455 | /* 2: 76 - 90 MHz (Japan) */ | |
1456 | case 2 : | |
1457 | tuner->rangelow = 76 * FREQ_MUL; | |
1458 | tuner->rangehigh = 90 * FREQ_MUL; | |
1459 | break; | |
78656acd | 1460 | }; |
78656acd | 1461 | |
73a529f9 | 1462 | /* stereo indicator == stereo (instead of mono) */ |
d807dec5 | 1463 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 0) |
73a529f9 | 1464 | tuner->rxsubchans = V4L2_TUNER_SUB_MONO; |
d807dec5 TL |
1465 | else |
1466 | tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; | |
73a529f9 TL |
1467 | |
1468 | /* mono/stereo selector */ | |
d807dec5 | 1469 | if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 0) |
73a529f9 | 1470 | tuner->audmode = V4L2_TUNER_MODE_STEREO; |
d807dec5 TL |
1471 | else |
1472 | tuner->audmode = V4L2_TUNER_MODE_MONO; | |
78656acd TL |
1473 | |
1474 | /* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */ | |
d807dec5 TL |
1475 | /* measured in units of dbµV in 1 db increments (max at ~75 dbµV) */ |
1476 | tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI); | |
1477 | /* the ideal factor is 0xffff/75 = 873,8 */ | |
1478 | tuner->signal = (tuner->signal * 873) + (8 * tuner->signal / 10); | |
78656acd TL |
1479 | |
1480 | /* automatic frequency control: -1: freq to low, 1 freq to high */ | |
ace7d4bb TL |
1481 | /* AFCRL does only indicate that freq. differs, not if too low/high */ |
1482 | tuner->afc = (radio->registers[STATUSRSSI] & STATUSRSSI_AFCRL) ? 1 : 0; | |
78656acd | 1483 | |
a7c850a0 TL |
1484 | done: |
1485 | if (retval < 0) | |
1486 | printk(KERN_WARNING DRIVER_NAME | |
1487 | ": get tuner failed with %d\n", retval); | |
1488 | return retval; | |
78656acd TL |
1489 | } |
1490 | ||
1491 | ||
1492 | /* | |
1493 | * si470x_vidioc_s_tuner - set tuner attributes | |
1494 | */ | |
1495 | static int si470x_vidioc_s_tuner(struct file *file, void *priv, | |
1496 | struct v4l2_tuner *tuner) | |
1497 | { | |
c170ecf4 | 1498 | struct si470x_device *radio = video_drvdata(file); |
33632d47 | 1499 | int retval = -EINVAL; |
78656acd | 1500 | |
a7c850a0 TL |
1501 | /* safety checks */ |
1502 | if (radio->disconnected) { | |
1503 | retval = -EIO; | |
1504 | goto done; | |
1505 | } | |
33632d47 | 1506 | if (tuner->index != 0) |
a7c850a0 | 1507 | goto done; |
78656acd | 1508 | |
73a529f9 TL |
1509 | /* mono/stereo selector */ |
1510 | switch (tuner->audmode) { | |
1511 | case V4L2_TUNER_MODE_MONO: | |
78656acd | 1512 | radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */ |
73a529f9 TL |
1513 | break; |
1514 | case V4L2_TUNER_MODE_STEREO: | |
78656acd | 1515 | radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */ |
73a529f9 TL |
1516 | break; |
1517 | default: | |
1518 | goto done; | |
1519 | } | |
78656acd | 1520 | |
0e3301ec | 1521 | retval = si470x_set_register(radio, POWERCFG); |
a7c850a0 TL |
1522 | |
1523 | done: | |
0e3301ec TL |
1524 | if (retval < 0) |
1525 | printk(KERN_WARNING DRIVER_NAME | |
1526 | ": set tuner failed with %d\n", retval); | |
0e3301ec | 1527 | return retval; |
78656acd TL |
1528 | } |
1529 | ||
1530 | ||
1531 | /* | |
1532 | * si470x_vidioc_g_frequency - get tuner or modulator radio frequency | |
1533 | */ | |
1534 | static int si470x_vidioc_g_frequency(struct file *file, void *priv, | |
1535 | struct v4l2_frequency *freq) | |
1536 | { | |
c170ecf4 | 1537 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1538 | int retval = 0; |
78656acd | 1539 | |
a7c850a0 TL |
1540 | /* safety checks */ |
1541 | if (radio->disconnected) { | |
1542 | retval = -EIO; | |
1543 | goto done; | |
1544 | } | |
33632d47 | 1545 | if (freq->tuner != 0) { |
a7c850a0 TL |
1546 | retval = -EINVAL; |
1547 | goto done; | |
1548 | } | |
1549 | ||
33632d47 | 1550 | freq->type = V4L2_TUNER_RADIO; |
a7c850a0 | 1551 | retval = si470x_get_freq(radio, &freq->frequency); |
03dea86d | 1552 | |
a7c850a0 TL |
1553 | done: |
1554 | if (retval < 0) | |
1555 | printk(KERN_WARNING DRIVER_NAME | |
1556 | ": get frequency failed with %d\n", retval); | |
1557 | return retval; | |
78656acd TL |
1558 | } |
1559 | ||
1560 | ||
1561 | /* | |
1562 | * si470x_vidioc_s_frequency - set tuner or modulator radio frequency | |
1563 | */ | |
1564 | static int si470x_vidioc_s_frequency(struct file *file, void *priv, | |
1565 | struct v4l2_frequency *freq) | |
1566 | { | |
c170ecf4 | 1567 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1568 | int retval = 0; |
78656acd | 1569 | |
a7c850a0 TL |
1570 | /* safety checks */ |
1571 | if (radio->disconnected) { | |
1572 | retval = -EIO; | |
1573 | goto done; | |
1574 | } | |
33632d47 | 1575 | if (freq->tuner != 0) { |
a7c850a0 TL |
1576 | retval = -EINVAL; |
1577 | goto done; | |
1578 | } | |
78656acd | 1579 | |
0e3301ec | 1580 | retval = si470x_set_freq(radio, freq->frequency); |
a7c850a0 TL |
1581 | |
1582 | done: | |
0e3301ec TL |
1583 | if (retval < 0) |
1584 | printk(KERN_WARNING DRIVER_NAME | |
1585 | ": set frequency failed with %d\n", retval); | |
a7c850a0 | 1586 | return retval; |
78656acd TL |
1587 | } |
1588 | ||
1589 | ||
bbc8995f TL |
1590 | /* |
1591 | * si470x_vidioc_s_hw_freq_seek - set hardware frequency seek | |
1592 | */ | |
1593 | static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv, | |
1594 | struct v4l2_hw_freq_seek *seek) | |
1595 | { | |
c170ecf4 | 1596 | struct si470x_device *radio = video_drvdata(file); |
bbc8995f TL |
1597 | int retval = 0; |
1598 | ||
1599 | /* safety checks */ | |
1600 | if (radio->disconnected) { | |
1601 | retval = -EIO; | |
1602 | goto done; | |
1603 | } | |
33632d47 | 1604 | if (seek->tuner != 0) { |
bbc8995f TL |
1605 | retval = -EINVAL; |
1606 | goto done; | |
1607 | } | |
1608 | ||
1609 | retval = si470x_set_seek(radio, seek->wrap_around, seek->seek_upward); | |
1610 | ||
1611 | done: | |
1612 | if (retval < 0) | |
1613 | printk(KERN_WARNING DRIVER_NAME | |
1614 | ": set hardware frequency seek failed with %d\n", | |
1615 | retval); | |
1616 | return retval; | |
1617 | } | |
1618 | ||
374ab686 TL |
1619 | |
1620 | /* | |
1621 | * si470x_ioctl_ops - video device ioctl operations | |
1622 | */ | |
a399810c | 1623 | static const struct v4l2_ioctl_ops si470x_ioctl_ops = { |
8bf5e5ca | 1624 | .vidioc_querycap = si470x_vidioc_querycap, |
8bf5e5ca TL |
1625 | .vidioc_queryctrl = si470x_vidioc_queryctrl, |
1626 | .vidioc_g_ctrl = si470x_vidioc_g_ctrl, | |
1627 | .vidioc_s_ctrl = si470x_vidioc_s_ctrl, | |
1628 | .vidioc_g_audio = si470x_vidioc_g_audio, | |
8bf5e5ca TL |
1629 | .vidioc_g_tuner = si470x_vidioc_g_tuner, |
1630 | .vidioc_s_tuner = si470x_vidioc_s_tuner, | |
1631 | .vidioc_g_frequency = si470x_vidioc_g_frequency, | |
1632 | .vidioc_s_frequency = si470x_vidioc_s_frequency, | |
bbc8995f | 1633 | .vidioc_s_hw_freq_seek = si470x_vidioc_s_hw_freq_seek, |
a399810c HV |
1634 | }; |
1635 | ||
374ab686 | 1636 | |
a399810c | 1637 | /* |
374ab686 | 1638 | * si470x_viddev_template - video device interface |
a399810c HV |
1639 | */ |
1640 | static struct video_device si470x_viddev_template = { | |
1641 | .fops = &si470x_fops, | |
a399810c | 1642 | .name = DRIVER_NAME, |
a399810c | 1643 | .release = video_device_release, |
374ab686 | 1644 | .ioctl_ops = &si470x_ioctl_ops, |
8bf5e5ca TL |
1645 | }; |
1646 | ||
1647 | ||
1648 | ||
1649 | /************************************************************************** | |
1650 | * USB Interface | |
1651 | **************************************************************************/ | |
1652 | ||
1653 | /* | |
1654 | * si470x_usb_driver_probe - probe for the device | |
1655 | */ | |
1656 | static int si470x_usb_driver_probe(struct usb_interface *intf, | |
1657 | const struct usb_device_id *id) | |
1658 | { | |
1659 | struct si470x_device *radio; | |
a7c850a0 | 1660 | int retval = 0; |
8bf5e5ca | 1661 | |
a7c850a0 | 1662 | /* private data allocation and initialization */ |
5caf5134 | 1663 | radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL); |
a7c850a0 TL |
1664 | if (!radio) { |
1665 | retval = -ENOMEM; | |
5caf5134 | 1666 | goto err_initial; |
a7c850a0 | 1667 | } |
8bf5e5ca | 1668 | radio->users = 0; |
ce5829e5 | 1669 | radio->disconnected = 0; |
8bf5e5ca | 1670 | radio->usbdev = interface_to_usbdev(intf); |
57566ad2 | 1671 | radio->intf = intf; |
ce5829e5 | 1672 | mutex_init(&radio->disconnect_lock); |
5caf5134 | 1673 | mutex_init(&radio->lock); |
a7c850a0 TL |
1674 | |
1675 | /* video device allocation and initialization */ | |
1676 | radio->videodev = video_device_alloc(); | |
1677 | if (!radio->videodev) { | |
1678 | retval = -ENOMEM; | |
1679 | goto err_radio; | |
1680 | } | |
1681 | memcpy(radio->videodev, &si470x_viddev_template, | |
1682 | sizeof(si470x_viddev_template)); | |
8bf5e5ca | 1683 | video_set_drvdata(radio->videodev, radio); |
8bf5e5ca | 1684 | |
10711d07 | 1685 | /* show some infos about the specific si470x device */ |
a7c850a0 TL |
1686 | if (si470x_get_all_registers(radio) < 0) { |
1687 | retval = -EIO; | |
81d1d09f | 1688 | goto err_video; |
a7c850a0 | 1689 | } |
5caf5134 | 1690 | printk(KERN_INFO DRIVER_NAME ": DeviceID=0x%4.4hx ChipID=0x%4.4hx\n", |
8bf5e5ca TL |
1691 | radio->registers[DEVICEID], radio->registers[CHIPID]); |
1692 | ||
10711d07 TL |
1693 | /* get software and hardware versions */ |
1694 | if (si470x_get_scratch_page_versions(radio) < 0) { | |
1695 | retval = -EIO; | |
81d1d09f | 1696 | goto err_video; |
10711d07 TL |
1697 | } |
1698 | printk(KERN_INFO DRIVER_NAME | |
1699 | ": software version %d, hardware version %d\n", | |
1700 | radio->software_version, radio->hardware_version); | |
1701 | ||
1702 | /* check if device and firmware is current */ | |
8bf5e5ca | 1703 | if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) |
5caf5134 TL |
1704 | < RADIO_SW_VERSION_CURRENT) { |
1705 | printk(KERN_WARNING DRIVER_NAME | |
1706 | ": This driver is known to work with " | |
1707 | "firmware version %hu,\n", RADIO_SW_VERSION_CURRENT); | |
1708 | printk(KERN_WARNING DRIVER_NAME | |
1709 | ": but the device has firmware version %hu.\n", | |
1710 | radio->registers[CHIPID] & CHIPID_FIRMWARE); | |
1711 | printk(KERN_WARNING DRIVER_NAME | |
1712 | ": If you have some trouble using this driver,\n"); | |
8bf5e5ca | 1713 | printk(KERN_WARNING DRIVER_NAME |
5caf5134 | 1714 | ": please report to V4L ML at " |
15965f06 | 1715 | "linux-media@vger.kernel.org\n"); |
5caf5134 | 1716 | } |
8bf5e5ca TL |
1717 | |
1718 | /* set initial frequency */ | |
1719 | si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ | |
1720 | ||
2f94fc46 TL |
1721 | /* set led to connect state */ |
1722 | si470x_set_led_state(radio, BLINK_GREEN_LED); | |
1723 | ||
5caf5134 | 1724 | /* rds buffer allocation */ |
8bf5e5ca TL |
1725 | radio->buf_size = rds_buf * 3; |
1726 | radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); | |
a7c850a0 TL |
1727 | if (!radio->buffer) { |
1728 | retval = -EIO; | |
81d1d09f | 1729 | goto err_video; |
a7c850a0 | 1730 | } |
5caf5134 TL |
1731 | |
1732 | /* rds buffer configuration */ | |
8bf5e5ca TL |
1733 | radio->wr_index = 0; |
1734 | radio->rd_index = 0; | |
8bf5e5ca | 1735 | init_waitqueue_head(&radio->read_queue); |
8bf5e5ca | 1736 | |
5caf5134 TL |
1737 | /* prepare rds work function */ |
1738 | INIT_DELAYED_WORK(&radio->work, si470x_work); | |
1739 | ||
1740 | /* register video device */ | |
cba99ae8 HV |
1741 | retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr); |
1742 | if (retval) { | |
5caf5134 TL |
1743 | printk(KERN_WARNING DRIVER_NAME |
1744 | ": Could not register video device\n"); | |
1745 | goto err_all; | |
1746 | } | |
1747 | usb_set_intfdata(intf, radio); | |
8bf5e5ca TL |
1748 | |
1749 | return 0; | |
5caf5134 | 1750 | err_all: |
5caf5134 | 1751 | kfree(radio->buffer); |
81d1d09f AK |
1752 | err_video: |
1753 | video_device_release(radio->videodev); | |
5caf5134 TL |
1754 | err_radio: |
1755 | kfree(radio); | |
1756 | err_initial: | |
1757 | return retval; | |
8bf5e5ca TL |
1758 | } |
1759 | ||
1760 | ||
57566ad2 TL |
1761 | /* |
1762 | * si470x_usb_driver_suspend - suspend the device | |
1763 | */ | |
1764 | static int si470x_usb_driver_suspend(struct usb_interface *intf, | |
1765 | pm_message_t message) | |
1766 | { | |
1767 | struct si470x_device *radio = usb_get_intfdata(intf); | |
1768 | ||
1769 | printk(KERN_INFO DRIVER_NAME ": suspending now...\n"); | |
1770 | ||
1771 | cancel_delayed_work_sync(&radio->work); | |
1772 | ||
1773 | return 0; | |
1774 | } | |
1775 | ||
1776 | ||
1777 | /* | |
1778 | * si470x_usb_driver_resume - resume the device | |
1779 | */ | |
1780 | static int si470x_usb_driver_resume(struct usb_interface *intf) | |
1781 | { | |
1782 | struct si470x_device *radio = usb_get_intfdata(intf); | |
1783 | ||
1784 | printk(KERN_INFO DRIVER_NAME ": resuming now...\n"); | |
1785 | ||
1786 | mutex_lock(&radio->lock); | |
1787 | if (radio->users && radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) | |
1788 | schedule_delayed_work(&radio->work, | |
1789 | msecs_to_jiffies(rds_poll_time)); | |
1790 | mutex_unlock(&radio->lock); | |
1791 | ||
1792 | return 0; | |
1793 | } | |
1794 | ||
1795 | ||
8bf5e5ca TL |
1796 | /* |
1797 | * si470x_usb_driver_disconnect - disconnect the device | |
1798 | */ | |
1799 | static void si470x_usb_driver_disconnect(struct usb_interface *intf) | |
1800 | { | |
1801 | struct si470x_device *radio = usb_get_intfdata(intf); | |
1802 | ||
ce5829e5 TL |
1803 | mutex_lock(&radio->disconnect_lock); |
1804 | radio->disconnected = 1; | |
5caf5134 | 1805 | cancel_delayed_work_sync(&radio->work); |
8bf5e5ca | 1806 | usb_set_intfdata(intf, NULL); |
ce5829e5 | 1807 | if (radio->users == 0) { |
2f94fc46 TL |
1808 | /* set led to disconnect state */ |
1809 | si470x_set_led_state(radio, BLINK_ORANGE_LED); | |
1810 | ||
ce5829e5 TL |
1811 | video_unregister_device(radio->videodev); |
1812 | kfree(radio->buffer); | |
1813 | kfree(radio); | |
1814 | } | |
1815 | mutex_unlock(&radio->disconnect_lock); | |
8bf5e5ca TL |
1816 | } |
1817 | ||
1818 | ||
1819 | /* | |
1820 | * si470x_usb_driver - usb driver interface | |
1821 | */ | |
1822 | static struct usb_driver si470x_usb_driver = { | |
57566ad2 TL |
1823 | .name = DRIVER_NAME, |
1824 | .probe = si470x_usb_driver_probe, | |
1825 | .disconnect = si470x_usb_driver_disconnect, | |
1826 | .suspend = si470x_usb_driver_suspend, | |
1827 | .resume = si470x_usb_driver_resume, | |
1828 | .id_table = si470x_usb_driver_id_table, | |
1829 | .supports_autosuspend = 1, | |
8bf5e5ca TL |
1830 | }; |
1831 | ||
1832 | ||
78656acd TL |
1833 | |
1834 | /************************************************************************** | |
8bf5e5ca | 1835 | * Module Interface |
78656acd TL |
1836 | **************************************************************************/ |
1837 | ||
1838 | /* | |
1839 | * si470x_module_init - module init | |
1840 | */ | |
1841 | static int __init si470x_module_init(void) | |
1842 | { | |
0e3301ec | 1843 | printk(KERN_INFO DRIVER_DESC ", Version " DRIVER_VERSION "\n"); |
78656acd TL |
1844 | return usb_register(&si470x_usb_driver); |
1845 | } | |
1846 | ||
1847 | ||
1848 | /* | |
1849 | * si470x_module_exit - module exit | |
1850 | */ | |
1851 | static void __exit si470x_module_exit(void) | |
1852 | { | |
1853 | usb_deregister(&si470x_usb_driver); | |
1854 | } | |
1855 | ||
1856 | ||
1857 | module_init(si470x_module_init); | |
1858 | module_exit(si470x_module_exit); | |
1859 | ||
1860 | MODULE_LICENSE("GPL"); | |
1861 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
1862 | MODULE_DESCRIPTION(DRIVER_DESC); | |
0e3301ec | 1863 | MODULE_VERSION(DRIVER_VERSION); |