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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) |
78656acd | 8 | * |
8bf5e5ca | 9 | * Copyright (c) 2008 Tobias Lorenz <tobias.lorenz@gmx.net> |
78656acd TL |
10 | * |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
24 | */ | |
25 | ||
26 | ||
27 | /* | |
28 | * History: | |
29 | * 2008-01-12 Tobias Lorenz <tobias.lorenz@gmx.net> | |
30 | * Version 1.0.0 | |
31 | * - First working version | |
32 | * 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net> | |
8bf5e5ca | 33 | * Version 1.0.1 |
78656acd TL |
34 | * - Improved error handling, every function now returns errno |
35 | * - Improved multi user access (start/mute/stop) | |
36 | * - Channel doesn't get lost anymore after start/mute/stop | |
37 | * - RDS support added (polling mode via interrupt EP 1) | |
38 | * - marked default module parameters with *value* | |
39 | * - switched from bit structs to bit masks | |
40 | * - header file cleaned and integrated | |
41 | * 2008-01-14 Tobias Lorenz <tobias.lorenz@gmx.net> | |
42 | * Version 1.0.2 | |
43 | * - hex values are now lower case | |
44 | * - commented USB ID for ADS/Tech moved on todo list | |
45 | * - blacklisted si470x in hid-quirks.c | |
46 | * - rds buffer handling functions integrated into *_work, *_read | |
47 | * - rds_command in si470x_poll exchanged against simple retval | |
48 | * - check for firmware version 15 | |
49 | * - code order and prototypes still remain the same | |
50 | * - spacing and bottom of band codes remain the same | |
8bf5e5ca TL |
51 | * 2008-01-16 Tobias Lorenz <tobias.lorenz@gmx.net> |
52 | * Version 1.0.3 | |
53 | * - code reordered to avoid function prototypes | |
54 | * - switch/case defaults are now more user-friendly | |
55 | * - unified comment style | |
56 | * - applied all checkpatch.pl v1.12 suggestions | |
57 | * except the warning about the too long lines with bit comments | |
58 | * - renamed FMRADIO to RADIO to cut line length (checkpatch.pl) | |
2fb88406 TL |
59 | * 2008-01-22 Tobias Lorenz <tobias.lorenz@gmx.net> |
60 | * Version 1.0.4 | |
61 | * - avoid poss. locking when doing copy_to_user which may sleep | |
62 | * - RDS is automatically activated on read now | |
63 | * - code cleaned of unnecessary rds_commands | |
64 | * - USB Vendor/Product ID for ADS/Tech FM Radio Receiver verified | |
65 | * (thanks to Guillaume RAMOUSSE) | |
0e3301ec TL |
66 | * 2008-01-27 Tobias Lorenz <tobias.lorenz@gmx.net> |
67 | * Version 1.0.5 | |
68 | * - number of seek_retries changed to tune_timeout | |
69 | * - fixed problem with incomplete tune operations by own buffers | |
5caf5134 | 70 | * - optimization of variables and printf types |
0e3301ec | 71 | * - improved error logging |
5caf5134 TL |
72 | * 2008-01-31 Tobias Lorenz <tobias.lorenz@gmx.net> |
73 | * Oliver Neukum <oliver@neukum.org> | |
74 | * Version 1.0.6 | |
75 | * - fixed coverity checker warnings in *_usb_driver_disconnect | |
76 | * - probe()/open() race by correct ordering in probe() | |
77 | * - DMA coherency rules by separate allocation of all buffers | |
78 | * - use of endianness macros | |
79 | * - abuse of spinlock, replaced by mutex | |
80 | * - racy handling of timer in disconnect, | |
81 | * replaced by delayed_work | |
82 | * - racy interruptible_sleep_on(), | |
83 | * replaced with wait_event_interruptible() | |
84 | * - handle signals in read() | |
57566ad2 TL |
85 | * 2008-02-08 Tobias Lorenz <tobias.lorenz@gmx.net> |
86 | * Oliver Neukum <oliver@neukum.org> | |
87 | * Version 1.0.7 | |
88 | * - usb autosuspend support | |
ce5829e5 | 89 | * - unplugging fixed |
6cc72658 TL |
90 | * 2008-05-07 Tobias Lorenz <tobias.lorenz@gmx.net> |
91 | * Version 1.0.8 | |
bbc8995f | 92 | * - hardware frequency seek support |
ace7d4bb | 93 | * - afc indication |
a7c850a0 | 94 | * - more safety checks, let si470x_get_freq return errno |
33632d47 | 95 | * - vidioc behavior corrected according to v4l2 spec |
69df96c3 AK |
96 | * 2008-10-20 Alexey Klimov <klimov.linux@gmail.com> |
97 | * - add support for KWorld USB FM Radio FM700 | |
98 | * - blacklisted KWorld radio in hid-core.c and hid-ids.h | |
5e6de7d9 ML |
99 | * 2008-12-03 Mark Lord <mlord@pobox.com> |
100 | * - add support for DealExtreme USB Radio | |
78656acd TL |
101 | * |
102 | * ToDo: | |
78656acd | 103 | * - add firmware download/update support |
78656acd | 104 | * - RDS support: interrupt mode, instead of polling |
8bf5e5ca | 105 | * - add LED status output (check if that's not already done in firmware) |
78656acd TL |
106 | */ |
107 | ||
8bf5e5ca | 108 | |
78656acd TL |
109 | /* driver definitions */ |
110 | #define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>" | |
111 | #define DRIVER_NAME "radio-si470x" | |
6cc72658 | 112 | #define DRIVER_KERNEL_VERSION KERNEL_VERSION(1, 0, 8) |
78656acd TL |
113 | #define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver" |
114 | #define DRIVER_DESC "USB radio driver for Si470x FM Radio Receivers" | |
6cc72658 | 115 | #define DRIVER_VERSION "1.0.8" |
78656acd TL |
116 | |
117 | ||
118 | /* kernel includes */ | |
119 | #include <linux/kernel.h> | |
120 | #include <linux/module.h> | |
121 | #include <linux/init.h> | |
122 | #include <linux/slab.h> | |
123 | #include <linux/input.h> | |
78656acd TL |
124 | #include <linux/usb.h> |
125 | #include <linux/hid.h> | |
126 | #include <linux/version.h> | |
387d4477 | 127 | #include <linux/videodev2.h> |
5caf5134 | 128 | #include <linux/mutex.h> |
387d4477 | 129 | #include <media/v4l2-common.h> |
35ea11ff | 130 | #include <media/v4l2-ioctl.h> |
78656acd | 131 | #include <media/rds.h> |
5caf5134 | 132 | #include <asm/unaligned.h> |
78656acd TL |
133 | |
134 | ||
8bf5e5ca TL |
135 | /* USB Device ID List */ |
136 | static struct usb_device_id si470x_usb_driver_id_table[] = { | |
137 | /* Silicon Labs USB FM Radio Reference Design */ | |
374ab686 | 138 | { USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) }, |
2fb88406 | 139 | /* ADS/Tech FM Radio Receiver (formerly Instant FM Music) */ |
374ab686 | 140 | { USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) }, |
69df96c3 AK |
141 | /* KWorld USB FM Radio SnapMusic Mobile 700 (FM700) */ |
142 | { USB_DEVICE_AND_INTERFACE_INFO(0x1b80, 0xd700, USB_CLASS_HID, 0, 0) }, | |
5e6de7d9 ML |
143 | /* DealExtreme USB Radio */ |
144 | { USB_DEVICE_AND_INTERFACE_INFO(0x10c5, 0x819a, USB_CLASS_HID, 0, 0) }, | |
8bf5e5ca TL |
145 | /* Terminating entry */ |
146 | { } | |
147 | }; | |
148 | MODULE_DEVICE_TABLE(usb, si470x_usb_driver_id_table); | |
149 | ||
150 | ||
151 | ||
152 | /************************************************************************** | |
153 | * Module Parameters | |
154 | **************************************************************************/ | |
155 | ||
78656acd TL |
156 | /* Radio Nr */ |
157 | static int radio_nr = -1; | |
374ab686 | 158 | module_param(radio_nr, int, 0444); |
78656acd TL |
159 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); |
160 | ||
161 | /* Spacing (kHz) */ | |
162 | /* 0: 200 kHz (USA, Australia) */ | |
163 | /* 1: 100 kHz (Europe, Japan) */ | |
164 | /* 2: 50 kHz */ | |
0e3301ec | 165 | static unsigned short space = 2; |
374ab686 TL |
166 | module_param(space, ushort, 0444); |
167 | MODULE_PARM_DESC(space, "Spacing: 0=200kHz 1=100kHz *2=50kHz*"); | |
78656acd TL |
168 | |
169 | /* Bottom of Band (MHz) */ | |
170 | /* 0: 87.5 - 108 MHz (USA, Europe)*/ | |
171 | /* 1: 76 - 108 MHz (Japan wide band) */ | |
172 | /* 2: 76 - 90 MHz (Japan) */ | |
0e3301ec | 173 | static unsigned short band = 1; |
374ab686 TL |
174 | module_param(band, ushort, 0444); |
175 | MODULE_PARM_DESC(band, "Band: 0=87.5..108MHz *1=76..108MHz* 2=76..90MHz"); | |
78656acd TL |
176 | |
177 | /* De-emphasis */ | |
178 | /* 0: 75 us (USA) */ | |
179 | /* 1: 50 us (Europe, Australia, Japan) */ | |
0e3301ec | 180 | static unsigned short de = 1; |
374ab686 TL |
181 | module_param(de, ushort, 0444); |
182 | MODULE_PARM_DESC(de, "De-emphasis: 0=75us *1=50us*"); | |
78656acd TL |
183 | |
184 | /* USB timeout */ | |
0e3301ec | 185 | static unsigned int usb_timeout = 500; |
374ab686 | 186 | module_param(usb_timeout, uint, 0644); |
78656acd TL |
187 | MODULE_PARM_DESC(usb_timeout, "USB timeout (ms): *500*"); |
188 | ||
0e3301ec TL |
189 | /* Tune timeout */ |
190 | static unsigned int tune_timeout = 3000; | |
374ab686 | 191 | module_param(tune_timeout, uint, 0644); |
0e3301ec | 192 | MODULE_PARM_DESC(tune_timeout, "Tune timeout: *3000*"); |
78656acd | 193 | |
bbc8995f TL |
194 | /* Seek timeout */ |
195 | static unsigned int seek_timeout = 5000; | |
374ab686 | 196 | module_param(seek_timeout, uint, 0644); |
bbc8995f TL |
197 | MODULE_PARM_DESC(seek_timeout, "Seek timeout: *5000*"); |
198 | ||
78656acd | 199 | /* RDS buffer blocks */ |
0e3301ec | 200 | static unsigned int rds_buf = 100; |
374ab686 | 201 | module_param(rds_buf, uint, 0444); |
78656acd TL |
202 | MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*"); |
203 | ||
204 | /* RDS maximum block errors */ | |
0e3301ec | 205 | static unsigned short max_rds_errors = 1; |
78656acd TL |
206 | /* 0 means 0 errors requiring correction */ |
207 | /* 1 means 1-2 errors requiring correction (used by original USBRadio.exe) */ | |
208 | /* 2 means 3-5 errors requiring correction */ | |
209 | /* 3 means 6+ errors or errors in checkword, correction not possible */ | |
374ab686 | 210 | module_param(max_rds_errors, ushort, 0644); |
78656acd TL |
211 | MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*"); |
212 | ||
213 | /* RDS poll frequency */ | |
0e3301ec | 214 | static unsigned int rds_poll_time = 40; |
78656acd | 215 | /* 40 is used by the original USBRadio.exe */ |
2fb88406 | 216 | /* 50 is used by radio-cadet */ |
78656acd TL |
217 | /* 75 should be okay */ |
218 | /* 80 is the usual RDS receive interval */ | |
374ab686 | 219 | module_param(rds_poll_time, uint, 0644); |
78656acd TL |
220 | MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); |
221 | ||
222 | ||
223 | ||
224 | /************************************************************************** | |
225 | * Register Definitions | |
226 | **************************************************************************/ | |
8bf5e5ca TL |
227 | #define RADIO_REGISTER_SIZE 2 /* 16 register bit width */ |
228 | #define RADIO_REGISTER_NUM 16 /* DEVICEID ... RDSD */ | |
78656acd TL |
229 | #define RDS_REGISTER_NUM 6 /* STATUSRSSI ... RDSD */ |
230 | ||
231 | #define DEVICEID 0 /* Device ID */ | |
232 | #define DEVICEID_PN 0xf000 /* bits 15..12: Part Number */ | |
233 | #define DEVICEID_MFGID 0x0fff /* bits 11..00: Manufacturer ID */ | |
234 | ||
235 | #define CHIPID 1 /* Chip ID */ | |
236 | #define CHIPID_REV 0xfc00 /* bits 15..10: Chip Version */ | |
237 | #define CHIPID_DEV 0x0200 /* bits 09..09: Device */ | |
238 | #define CHIPID_FIRMWARE 0x01ff /* bits 08..00: Firmware Version */ | |
239 | ||
240 | #define POWERCFG 2 /* Power Configuration */ | |
241 | #define POWERCFG_DSMUTE 0x8000 /* bits 15..15: Softmute Disable */ | |
242 | #define POWERCFG_DMUTE 0x4000 /* bits 14..14: Mute Disable */ | |
243 | #define POWERCFG_MONO 0x2000 /* bits 13..13: Mono Select */ | |
244 | #define POWERCFG_RDSM 0x0800 /* bits 11..11: RDS Mode (Si4701 only) */ | |
245 | #define POWERCFG_SKMODE 0x0400 /* bits 10..10: Seek Mode */ | |
246 | #define POWERCFG_SEEKUP 0x0200 /* bits 09..09: Seek Direction */ | |
247 | #define POWERCFG_SEEK 0x0100 /* bits 08..08: Seek */ | |
248 | #define POWERCFG_DISABLE 0x0040 /* bits 06..06: Powerup Disable */ | |
249 | #define POWERCFG_ENABLE 0x0001 /* bits 00..00: Powerup Enable */ | |
250 | ||
251 | #define CHANNEL 3 /* Channel */ | |
252 | #define CHANNEL_TUNE 0x8000 /* bits 15..15: Tune */ | |
253 | #define CHANNEL_CHAN 0x03ff /* bits 09..00: Channel Select */ | |
254 | ||
255 | #define SYSCONFIG1 4 /* System Configuration 1 */ | |
256 | #define SYSCONFIG1_RDSIEN 0x8000 /* bits 15..15: RDS Interrupt Enable (Si4701 only) */ | |
257 | #define SYSCONFIG1_STCIEN 0x4000 /* bits 14..14: Seek/Tune Complete Interrupt Enable */ | |
258 | #define SYSCONFIG1_RDS 0x1000 /* bits 12..12: RDS Enable (Si4701 only) */ | |
259 | #define SYSCONFIG1_DE 0x0800 /* bits 11..11: De-emphasis (0=75us 1=50us) */ | |
260 | #define SYSCONFIG1_AGCD 0x0400 /* bits 10..10: AGC Disable */ | |
261 | #define SYSCONFIG1_BLNDADJ 0x00c0 /* bits 07..06: Stereo/Mono Blend Level Adjustment */ | |
262 | #define SYSCONFIG1_GPIO3 0x0030 /* bits 05..04: General Purpose I/O 3 */ | |
263 | #define SYSCONFIG1_GPIO2 0x000c /* bits 03..02: General Purpose I/O 2 */ | |
264 | #define SYSCONFIG1_GPIO1 0x0003 /* bits 01..00: General Purpose I/O 1 */ | |
265 | ||
266 | #define SYSCONFIG2 5 /* System Configuration 2 */ | |
267 | #define SYSCONFIG2_SEEKTH 0xff00 /* bits 15..08: RSSI Seek Threshold */ | |
268 | #define SYSCONFIG2_BAND 0x0080 /* bits 07..06: Band Select */ | |
269 | #define SYSCONFIG2_SPACE 0x0030 /* bits 05..04: Channel Spacing */ | |
270 | #define SYSCONFIG2_VOLUME 0x000f /* bits 03..00: Volume */ | |
271 | ||
272 | #define SYSCONFIG3 6 /* System Configuration 3 */ | |
273 | #define SYSCONFIG3_SMUTER 0xc000 /* bits 15..14: Softmute Attack/Recover Rate */ | |
274 | #define SYSCONFIG3_SMUTEA 0x3000 /* bits 13..12: Softmute Attenuation */ | |
275 | #define SYSCONFIG3_SKSNR 0x00f0 /* bits 07..04: Seek SNR Threshold */ | |
276 | #define SYSCONFIG3_SKCNT 0x000f /* bits 03..00: Seek FM Impulse Detection Threshold */ | |
277 | ||
278 | #define TEST1 7 /* Test 1 */ | |
279 | #define TEST1_AHIZEN 0x4000 /* bits 14..14: Audio High-Z Enable */ | |
280 | ||
281 | #define TEST2 8 /* Test 2 */ | |
282 | /* TEST2 only contains reserved bits */ | |
283 | ||
284 | #define BOOTCONFIG 9 /* Boot Configuration */ | |
285 | /* BOOTCONFIG only contains reserved bits */ | |
286 | ||
287 | #define STATUSRSSI 10 /* Status RSSI */ | |
288 | #define STATUSRSSI_RDSR 0x8000 /* bits 15..15: RDS Ready (Si4701 only) */ | |
289 | #define STATUSRSSI_STC 0x4000 /* bits 14..14: Seek/Tune Complete */ | |
290 | #define STATUSRSSI_SF 0x2000 /* bits 13..13: Seek Fail/Band Limit */ | |
291 | #define STATUSRSSI_AFCRL 0x1000 /* bits 12..12: AFC Rail */ | |
292 | #define STATUSRSSI_RDSS 0x0800 /* bits 11..11: RDS Synchronized (Si4701 only) */ | |
293 | #define STATUSRSSI_BLERA 0x0600 /* bits 10..09: RDS Block A Errors (Si4701 only) */ | |
294 | #define STATUSRSSI_ST 0x0100 /* bits 08..08: Stereo Indicator */ | |
295 | #define STATUSRSSI_RSSI 0x00ff /* bits 07..00: RSSI (Received Signal Strength Indicator) */ | |
296 | ||
297 | #define READCHAN 11 /* Read Channel */ | |
298 | #define READCHAN_BLERB 0xc000 /* bits 15..14: RDS Block D Errors (Si4701 only) */ | |
299 | #define READCHAN_BLERC 0x3000 /* bits 13..12: RDS Block C Errors (Si4701 only) */ | |
300 | #define READCHAN_BLERD 0x0c00 /* bits 11..10: RDS Block B Errors (Si4701 only) */ | |
301 | #define READCHAN_READCHAN 0x03ff /* bits 09..00: Read Channel */ | |
302 | ||
303 | #define RDSA 12 /* RDSA */ | |
304 | #define RDSA_RDSA 0xffff /* bits 15..00: RDS Block A Data (Si4701 only) */ | |
305 | ||
306 | #define RDSB 13 /* RDSB */ | |
307 | #define RDSB_RDSB 0xffff /* bits 15..00: RDS Block B Data (Si4701 only) */ | |
308 | ||
309 | #define RDSC 14 /* RDSC */ | |
310 | #define RDSC_RDSC 0xffff /* bits 15..00: RDS Block C Data (Si4701 only) */ | |
311 | ||
312 | #define RDSD 15 /* RDSD */ | |
313 | #define RDSD_RDSD 0xffff /* bits 15..00: RDS Block D Data (Si4701 only) */ | |
314 | ||
315 | ||
316 | ||
317 | /************************************************************************** | |
8bf5e5ca | 318 | * USB HID Reports |
78656acd TL |
319 | **************************************************************************/ |
320 | ||
321 | /* Reports 1-16 give direct read/write access to the 16 Si470x registers */ | |
322 | /* with the (REPORT_ID - 1) corresponding to the register address across USB */ | |
323 | /* endpoint 0 using GET_REPORT and SET_REPORT */ | |
8bf5e5ca | 324 | #define REGISTER_REPORT_SIZE (RADIO_REGISTER_SIZE + 1) |
78656acd TL |
325 | #define REGISTER_REPORT(reg) ((reg) + 1) |
326 | ||
327 | /* Report 17 gives direct read/write access to the entire Si470x register */ | |
328 | /* map across endpoint 0 using GET_REPORT and SET_REPORT */ | |
8bf5e5ca | 329 | #define ENTIRE_REPORT_SIZE (RADIO_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) |
78656acd TL |
330 | #define ENTIRE_REPORT 17 |
331 | ||
332 | /* Report 18 is used to send the lowest 6 Si470x registers up the HID */ | |
333 | /* interrupt endpoint 1 to Windows every 20 milliseconds for status */ | |
8bf5e5ca | 334 | #define RDS_REPORT_SIZE (RDS_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) |
78656acd TL |
335 | #define RDS_REPORT 18 |
336 | ||
337 | /* Report 19: LED state */ | |
338 | #define LED_REPORT_SIZE 3 | |
339 | #define LED_REPORT 19 | |
340 | ||
341 | /* Report 19: stream */ | |
342 | #define STREAM_REPORT_SIZE 3 | |
343 | #define STREAM_REPORT 19 | |
344 | ||
345 | /* Report 20: scratch */ | |
346 | #define SCRATCH_PAGE_SIZE 63 | |
347 | #define SCRATCH_REPORT_SIZE (SCRATCH_PAGE_SIZE + 1) | |
348 | #define SCRATCH_REPORT 20 | |
349 | ||
350 | /* Reports 19-22: flash upgrade of the C8051F321 */ | |
351 | #define WRITE_REPORT 19 | |
352 | #define FLASH_REPORT 20 | |
353 | #define CRC_REPORT 21 | |
354 | #define RESPONSE_REPORT 22 | |
355 | ||
356 | /* Report 23: currently unused, but can accept 60 byte reports on the HID */ | |
357 | /* interrupt out endpoint 2 every 1 millisecond */ | |
358 | #define UNUSED_REPORT 23 | |
359 | ||
360 | ||
361 | ||
362 | /************************************************************************** | |
8bf5e5ca | 363 | * Software/Hardware Versions |
78656acd | 364 | **************************************************************************/ |
8bf5e5ca TL |
365 | #define RADIO_SW_VERSION_NOT_BOOTLOADABLE 6 |
366 | #define RADIO_SW_VERSION 7 | |
367 | #define RADIO_SW_VERSION_CURRENT 15 | |
368 | #define RADIO_HW_VERSION 1 | |
78656acd TL |
369 | |
370 | #define SCRATCH_PAGE_SW_VERSION 1 | |
371 | #define SCRATCH_PAGE_HW_VERSION 2 | |
372 | ||
373 | ||
374 | ||
375 | /************************************************************************** | |
8bf5e5ca | 376 | * LED State Definitions |
78656acd TL |
377 | **************************************************************************/ |
378 | #define LED_COMMAND 0x35 | |
379 | ||
380 | #define NO_CHANGE_LED 0x00 | |
381 | #define ALL_COLOR_LED 0x01 /* streaming state */ | |
382 | #define BLINK_GREEN_LED 0x02 /* connect state */ | |
383 | #define BLINK_RED_LED 0x04 | |
384 | #define BLINK_ORANGE_LED 0x10 /* disconnect state */ | |
385 | #define SOLID_GREEN_LED 0x20 /* tuning/seeking state */ | |
386 | #define SOLID_RED_LED 0x40 /* bootload state */ | |
387 | #define SOLID_ORANGE_LED 0x80 | |
388 | ||
389 | ||
390 | ||
391 | /************************************************************************** | |
8bf5e5ca | 392 | * Stream State Definitions |
78656acd TL |
393 | **************************************************************************/ |
394 | #define STREAM_COMMAND 0x36 | |
395 | #define STREAM_VIDPID 0x00 | |
396 | #define STREAM_AUDIO 0xff | |
397 | ||
398 | ||
399 | ||
400 | /************************************************************************** | |
8bf5e5ca | 401 | * Bootloader / Flash Commands |
78656acd TL |
402 | **************************************************************************/ |
403 | ||
8bf5e5ca | 404 | /* unique id sent to bootloader and required to put into a bootload state */ |
78656acd TL |
405 | #define UNIQUE_BL_ID 0x34 |
406 | ||
8bf5e5ca | 407 | /* mask for the flash data */ |
78656acd TL |
408 | #define FLASH_DATA_MASK 0x55 |
409 | ||
8bf5e5ca | 410 | /* bootloader commands */ |
78656acd TL |
411 | #define GET_SW_VERSION_COMMAND 0x00 |
412 | #define SET_PAGE_COMMAND 0x01 | |
413 | #define ERASE_PAGE_COMMAND 0x02 | |
414 | #define WRITE_PAGE_COMMAND 0x03 | |
415 | #define CRC_ON_PAGE_COMMAND 0x04 | |
416 | #define READ_FLASH_BYTE_COMMAND 0x05 | |
417 | #define RESET_DEVICE_COMMAND 0x06 | |
418 | #define GET_HW_VERSION_COMMAND 0x07 | |
419 | #define BLANK 0xff | |
420 | ||
8bf5e5ca | 421 | /* bootloader command responses */ |
78656acd TL |
422 | #define COMMAND_OK 0x01 |
423 | #define COMMAND_FAILED 0x02 | |
424 | #define COMMAND_PENDING 0x03 | |
425 | ||
8bf5e5ca | 426 | /* buffer sizes */ |
78656acd TL |
427 | #define COMMAND_BUFFER_SIZE 4 |
428 | #define RESPONSE_BUFFER_SIZE 2 | |
429 | #define FLASH_BUFFER_SIZE 64 | |
430 | #define CRC_BUFFER_SIZE 3 | |
431 | ||
432 | ||
433 | ||
434 | /************************************************************************** | |
8bf5e5ca | 435 | * General Driver Definitions |
78656acd TL |
436 | **************************************************************************/ |
437 | ||
8bf5e5ca TL |
438 | /* |
439 | * si470x_device - private data | |
440 | */ | |
78656acd TL |
441 | struct si470x_device { |
442 | /* reference to USB and video device */ | |
443 | struct usb_device *usbdev; | |
57566ad2 | 444 | struct usb_interface *intf; |
78656acd TL |
445 | struct video_device *videodev; |
446 | ||
0e3301ec TL |
447 | /* driver management */ |
448 | unsigned int users; | |
ce5829e5 TL |
449 | unsigned char disconnected; |
450 | struct mutex disconnect_lock; | |
78656acd TL |
451 | |
452 | /* Silabs internal registers (0..15) */ | |
8bf5e5ca | 453 | unsigned short registers[RADIO_REGISTER_NUM]; |
78656acd TL |
454 | |
455 | /* RDS receive buffer */ | |
5caf5134 | 456 | struct delayed_work work; |
2fb88406 | 457 | wait_queue_head_t read_queue; |
5caf5134 | 458 | struct mutex lock; /* buffer locking */ |
2fb88406 | 459 | unsigned char *buffer; /* size is always multiple of three */ |
78656acd TL |
460 | unsigned int buf_size; |
461 | unsigned int rd_index; | |
462 | unsigned int wr_index; | |
78656acd TL |
463 | }; |
464 | ||
78656acd | 465 | |
8bf5e5ca TL |
466 | /* |
467 | * The frequency is set in units of 62.5 Hz when using V4L2_TUNER_CAP_LOW, | |
468 | * 62.5 kHz otherwise. | |
469 | * The tuner is able to have a channel spacing of 50, 100 or 200 kHz. | |
470 | * tuner->capability is therefore set to V4L2_TUNER_CAP_LOW | |
471 | * The FREQ_MUL is then: 1 MHz / 62.5 Hz = 16000 | |
472 | */ | |
78656acd TL |
473 | #define FREQ_MUL (1000000 / 62.5) |
474 | ||
78656acd TL |
475 | |
476 | ||
477 | /************************************************************************** | |
8bf5e5ca | 478 | * General Driver Functions |
78656acd TL |
479 | **************************************************************************/ |
480 | ||
481 | /* | |
482 | * si470x_get_report - receive a HID report | |
483 | */ | |
0e3301ec | 484 | static int si470x_get_report(struct si470x_device *radio, void *buf, int size) |
78656acd | 485 | { |
0e3301ec TL |
486 | unsigned char *report = (unsigned char *) buf; |
487 | int retval; | |
488 | ||
489 | retval = usb_control_msg(radio->usbdev, | |
78656acd TL |
490 | usb_rcvctrlpipe(radio->usbdev, 0), |
491 | HID_REQ_GET_REPORT, | |
492 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, | |
0e3301ec TL |
493 | report[0], 2, |
494 | buf, size, usb_timeout); | |
a7c850a0 | 495 | |
0e3301ec TL |
496 | if (retval < 0) |
497 | printk(KERN_WARNING DRIVER_NAME | |
498 | ": si470x_get_report: usb_control_msg returned %d\n", | |
499 | retval); | |
0e3301ec | 500 | return retval; |
78656acd TL |
501 | } |
502 | ||
503 | ||
504 | /* | |
505 | * si470x_set_report - send a HID report | |
506 | */ | |
0e3301ec | 507 | static int si470x_set_report(struct si470x_device *radio, void *buf, int size) |
78656acd | 508 | { |
0e3301ec TL |
509 | unsigned char *report = (unsigned char *) buf; |
510 | int retval; | |
511 | ||
512 | retval = usb_control_msg(radio->usbdev, | |
78656acd TL |
513 | usb_sndctrlpipe(radio->usbdev, 0), |
514 | HID_REQ_SET_REPORT, | |
515 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT, | |
0e3301ec TL |
516 | report[0], 2, |
517 | buf, size, usb_timeout); | |
a7c850a0 | 518 | |
0e3301ec TL |
519 | if (retval < 0) |
520 | printk(KERN_WARNING DRIVER_NAME | |
521 | ": si470x_set_report: usb_control_msg returned %d\n", | |
522 | retval); | |
0e3301ec | 523 | return retval; |
78656acd TL |
524 | } |
525 | ||
526 | ||
527 | /* | |
528 | * si470x_get_register - read register | |
529 | */ | |
530 | static int si470x_get_register(struct si470x_device *radio, int regnr) | |
531 | { | |
0e3301ec | 532 | unsigned char buf[REGISTER_REPORT_SIZE]; |
78656acd TL |
533 | int retval; |
534 | ||
0e3301ec TL |
535 | buf[0] = REGISTER_REPORT(regnr); |
536 | ||
537 | retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); | |
78656acd | 538 | |
78656acd | 539 | if (retval >= 0) |
5ad6b816 | 540 | radio->registers[regnr] = get_unaligned_be16(&buf[1]); |
78656acd TL |
541 | |
542 | return (retval < 0) ? -EINVAL : 0; | |
543 | } | |
544 | ||
545 | ||
546 | /* | |
547 | * si470x_set_register - write register | |
548 | */ | |
549 | static int si470x_set_register(struct si470x_device *radio, int regnr) | |
550 | { | |
0e3301ec | 551 | unsigned char buf[REGISTER_REPORT_SIZE]; |
78656acd TL |
552 | int retval; |
553 | ||
0e3301ec | 554 | buf[0] = REGISTER_REPORT(regnr); |
5ad6b816 | 555 | put_unaligned_be16(radio->registers[regnr], &buf[1]); |
78656acd | 556 | |
0e3301ec | 557 | retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); |
78656acd TL |
558 | |
559 | return (retval < 0) ? -EINVAL : 0; | |
560 | } | |
561 | ||
562 | ||
563 | /* | |
564 | * si470x_get_all_registers - read entire registers | |
565 | */ | |
566 | static int si470x_get_all_registers(struct si470x_device *radio) | |
567 | { | |
0e3301ec | 568 | unsigned char buf[ENTIRE_REPORT_SIZE]; |
78656acd | 569 | int retval; |
0e3301ec | 570 | unsigned char regnr; |
78656acd | 571 | |
0e3301ec | 572 | buf[0] = ENTIRE_REPORT; |
78656acd | 573 | |
0e3301ec | 574 | retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); |
78656acd TL |
575 | |
576 | if (retval >= 0) | |
8bf5e5ca | 577 | for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++) |
5ad6b816 HH |
578 | radio->registers[regnr] = get_unaligned_be16( |
579 | &buf[regnr * RADIO_REGISTER_SIZE + 1]); | |
78656acd TL |
580 | |
581 | return (retval < 0) ? -EINVAL : 0; | |
582 | } | |
583 | ||
584 | ||
585 | /* | |
586 | * si470x_get_rds_registers - read rds registers | |
587 | */ | |
588 | static int si470x_get_rds_registers(struct si470x_device *radio) | |
589 | { | |
0e3301ec | 590 | unsigned char buf[RDS_REPORT_SIZE]; |
78656acd | 591 | int retval; |
78656acd | 592 | int size; |
0e3301ec | 593 | unsigned char regnr; |
78656acd | 594 | |
0e3301ec | 595 | buf[0] = RDS_REPORT; |
78656acd TL |
596 | |
597 | retval = usb_interrupt_msg(radio->usbdev, | |
0e3301ec TL |
598 | usb_rcvintpipe(radio->usbdev, 1), |
599 | (void *) &buf, sizeof(buf), &size, usb_timeout); | |
600 | if (size != sizeof(buf)) | |
ce5829e5 | 601 | printk(KERN_WARNING DRIVER_NAME ": si470x_get_rds_registers: " |
5caf5134 | 602 | "return size differs: %d != %zu\n", size, sizeof(buf)); |
0e3301ec TL |
603 | if (retval < 0) |
604 | printk(KERN_WARNING DRIVER_NAME ": si470x_get_rds_registers: " | |
605 | "usb_interrupt_msg returned %d\n", retval); | |
78656acd | 606 | |
8bf5e5ca TL |
607 | if (retval >= 0) |
608 | for (regnr = 0; regnr < RDS_REGISTER_NUM; regnr++) | |
78656acd | 609 | radio->registers[STATUSRSSI + regnr] = |
ce5829e5 TL |
610 | get_unaligned_be16( |
611 | &buf[regnr * RADIO_REGISTER_SIZE + 1]); | |
78656acd | 612 | |
8bf5e5ca | 613 | return (retval < 0) ? -EINVAL : 0; |
78656acd TL |
614 | } |
615 | ||
616 | ||
617 | /* | |
618 | * si470x_set_chan - set the channel | |
619 | */ | |
0e3301ec | 620 | static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) |
78656acd | 621 | { |
0e3301ec TL |
622 | int retval; |
623 | unsigned long timeout; | |
624 | bool timed_out = 0; | |
78656acd TL |
625 | |
626 | /* start tuning */ | |
627 | radio->registers[CHANNEL] &= ~CHANNEL_CHAN; | |
628 | radio->registers[CHANNEL] |= CHANNEL_TUNE | chan; | |
629 | retval = si470x_set_register(radio, CHANNEL); | |
630 | if (retval < 0) | |
a7c850a0 | 631 | goto done; |
78656acd | 632 | |
a7c850a0 | 633 | /* wait till tune operation has completed */ |
0e3301ec | 634 | timeout = jiffies + msecs_to_jiffies(tune_timeout); |
78656acd TL |
635 | do { |
636 | retval = si470x_get_register(radio, STATUSRSSI); | |
637 | if (retval < 0) | |
a7c850a0 | 638 | goto stop; |
0e3301ec TL |
639 | timed_out = time_after(jiffies, timeout); |
640 | } while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) && | |
641 | (!timed_out)); | |
a7c850a0 TL |
642 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) |
643 | printk(KERN_WARNING DRIVER_NAME ": tune does not complete\n"); | |
0e3301ec | 644 | if (timed_out) |
78656acd | 645 | printk(KERN_WARNING DRIVER_NAME |
a7c850a0 | 646 | ": tune timed out after %u ms\n", tune_timeout); |
78656acd | 647 | |
a7c850a0 | 648 | stop: |
78656acd TL |
649 | /* stop tuning */ |
650 | radio->registers[CHANNEL] &= ~CHANNEL_TUNE; | |
a7c850a0 TL |
651 | retval = si470x_set_register(radio, CHANNEL); |
652 | ||
653 | done: | |
654 | return retval; | |
78656acd TL |
655 | } |
656 | ||
657 | ||
658 | /* | |
659 | * si470x_get_freq - get the frequency | |
660 | */ | |
6cc72658 | 661 | static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq) |
78656acd | 662 | { |
6cc72658 | 663 | unsigned int spacing, band_bottom; |
0e3301ec | 664 | unsigned short chan; |
78656acd TL |
665 | int retval; |
666 | ||
667 | /* Spacing (kHz) */ | |
a17c0019 | 668 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { |
8bf5e5ca | 669 | /* 0: 200 kHz (USA, Australia) */ |
a17c0019 TL |
670 | case 0: |
671 | spacing = 0.200 * FREQ_MUL; break; | |
8bf5e5ca | 672 | /* 1: 100 kHz (Europe, Japan) */ |
a17c0019 TL |
673 | case 1: |
674 | spacing = 0.100 * FREQ_MUL; break; | |
8bf5e5ca | 675 | /* 2: 50 kHz */ |
a17c0019 TL |
676 | default: |
677 | spacing = 0.050 * FREQ_MUL; break; | |
78656acd TL |
678 | }; |
679 | ||
680 | /* Bottom of Band (MHz) */ | |
a17c0019 | 681 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { |
8bf5e5ca | 682 | /* 0: 87.5 - 108 MHz (USA, Europe) */ |
a17c0019 TL |
683 | case 0: |
684 | band_bottom = 87.5 * FREQ_MUL; break; | |
8bf5e5ca | 685 | /* 1: 76 - 108 MHz (Japan wide band) */ |
a17c0019 TL |
686 | default: |
687 | band_bottom = 76 * FREQ_MUL; break; | |
8bf5e5ca | 688 | /* 2: 76 - 90 MHz (Japan) */ |
a17c0019 TL |
689 | case 2: |
690 | band_bottom = 76 * FREQ_MUL; break; | |
78656acd TL |
691 | }; |
692 | ||
693 | /* read channel */ | |
694 | retval = si470x_get_register(radio, READCHAN); | |
78656acd TL |
695 | chan = radio->registers[READCHAN] & READCHAN_READCHAN; |
696 | ||
697 | /* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */ | |
6cc72658 | 698 | *freq = chan * spacing + band_bottom; |
78656acd | 699 | |
6cc72658 | 700 | return retval; |
78656acd TL |
701 | } |
702 | ||
703 | ||
704 | /* | |
705 | * si470x_set_freq - set the frequency | |
706 | */ | |
0e3301ec | 707 | static int si470x_set_freq(struct si470x_device *radio, unsigned int freq) |
78656acd | 708 | { |
0e3301ec TL |
709 | unsigned int spacing, band_bottom; |
710 | unsigned short chan; | |
78656acd TL |
711 | |
712 | /* Spacing (kHz) */ | |
a17c0019 | 713 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { |
8bf5e5ca | 714 | /* 0: 200 kHz (USA, Australia) */ |
a17c0019 TL |
715 | case 0: |
716 | spacing = 0.200 * FREQ_MUL; break; | |
8bf5e5ca | 717 | /* 1: 100 kHz (Europe, Japan) */ |
a17c0019 TL |
718 | case 1: |
719 | spacing = 0.100 * FREQ_MUL; break; | |
8bf5e5ca | 720 | /* 2: 50 kHz */ |
a17c0019 TL |
721 | default: |
722 | spacing = 0.050 * FREQ_MUL; break; | |
78656acd TL |
723 | }; |
724 | ||
725 | /* Bottom of Band (MHz) */ | |
a17c0019 | 726 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { |
8bf5e5ca | 727 | /* 0: 87.5 - 108 MHz (USA, Europe) */ |
a17c0019 TL |
728 | case 0: |
729 | band_bottom = 87.5 * FREQ_MUL; break; | |
8bf5e5ca | 730 | /* 1: 76 - 108 MHz (Japan wide band) */ |
a17c0019 TL |
731 | default: |
732 | band_bottom = 76 * FREQ_MUL; break; | |
8bf5e5ca | 733 | /* 2: 76 - 90 MHz (Japan) */ |
a17c0019 TL |
734 | case 2: |
735 | band_bottom = 76 * FREQ_MUL; break; | |
78656acd TL |
736 | }; |
737 | ||
738 | /* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */ | |
739 | chan = (freq - band_bottom) / spacing; | |
740 | ||
741 | return si470x_set_chan(radio, chan); | |
742 | } | |
743 | ||
744 | ||
bbc8995f TL |
745 | /* |
746 | * si470x_set_seek - set seek | |
747 | */ | |
748 | static int si470x_set_seek(struct si470x_device *radio, | |
749 | unsigned int wrap_around, unsigned int seek_upward) | |
750 | { | |
751 | int retval = 0; | |
752 | unsigned long timeout; | |
753 | bool timed_out = 0; | |
754 | ||
755 | /* start seeking */ | |
756 | radio->registers[POWERCFG] |= POWERCFG_SEEK; | |
757 | if (wrap_around == 1) | |
758 | radio->registers[POWERCFG] &= ~POWERCFG_SKMODE; | |
759 | else | |
760 | radio->registers[POWERCFG] |= POWERCFG_SKMODE; | |
761 | if (seek_upward == 1) | |
762 | radio->registers[POWERCFG] |= POWERCFG_SEEKUP; | |
763 | else | |
764 | radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP; | |
765 | retval = si470x_set_register(radio, POWERCFG); | |
766 | if (retval < 0) | |
767 | goto done; | |
768 | ||
769 | /* wait till seek operation has completed */ | |
770 | timeout = jiffies + msecs_to_jiffies(seek_timeout); | |
771 | do { | |
772 | retval = si470x_get_register(radio, STATUSRSSI); | |
773 | if (retval < 0) | |
774 | goto stop; | |
775 | timed_out = time_after(jiffies, timeout); | |
776 | } while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) && | |
777 | (!timed_out)); | |
778 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) | |
779 | printk(KERN_WARNING DRIVER_NAME ": seek does not complete\n"); | |
780 | if (radio->registers[STATUSRSSI] & STATUSRSSI_SF) | |
781 | printk(KERN_WARNING DRIVER_NAME | |
782 | ": seek failed / band limit reached\n"); | |
783 | if (timed_out) | |
784 | printk(KERN_WARNING DRIVER_NAME | |
785 | ": seek timed out after %u ms\n", seek_timeout); | |
786 | ||
787 | stop: | |
788 | /* stop seeking */ | |
789 | radio->registers[POWERCFG] &= ~POWERCFG_SEEK; | |
790 | retval = si470x_set_register(radio, POWERCFG); | |
791 | ||
792 | done: | |
793 | /* try again, if timed out */ | |
794 | if ((retval == 0) && timed_out) | |
795 | retval = -EAGAIN; | |
796 | ||
797 | return retval; | |
798 | } | |
799 | ||
800 | ||
8bf5e5ca TL |
801 | /* |
802 | * si470x_start - switch on radio | |
803 | */ | |
804 | static int si470x_start(struct si470x_device *radio) | |
805 | { | |
806 | int retval; | |
807 | ||
808 | /* powercfg */ | |
809 | radio->registers[POWERCFG] = | |
810 | POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM; | |
811 | retval = si470x_set_register(radio, POWERCFG); | |
812 | if (retval < 0) | |
a7c850a0 | 813 | goto done; |
8bf5e5ca TL |
814 | |
815 | /* sysconfig 1 */ | |
2fb88406 | 816 | radio->registers[SYSCONFIG1] = SYSCONFIG1_DE; |
8bf5e5ca TL |
817 | retval = si470x_set_register(radio, SYSCONFIG1); |
818 | if (retval < 0) | |
a7c850a0 | 819 | goto done; |
8bf5e5ca TL |
820 | |
821 | /* sysconfig 2 */ | |
822 | radio->registers[SYSCONFIG2] = | |
a7c850a0 TL |
823 | (0x3f << 8) | /* SEEKTH */ |
824 | ((band << 6) & SYSCONFIG2_BAND) | /* BAND */ | |
825 | ((space << 4) & SYSCONFIG2_SPACE) | /* SPACE */ | |
826 | 15; /* VOLUME (max) */ | |
8bf5e5ca TL |
827 | retval = si470x_set_register(radio, SYSCONFIG2); |
828 | if (retval < 0) | |
a7c850a0 | 829 | goto done; |
8bf5e5ca TL |
830 | |
831 | /* reset last channel */ | |
a7c850a0 | 832 | retval = si470x_set_chan(radio, |
8bf5e5ca | 833 | radio->registers[CHANNEL] & CHANNEL_CHAN); |
a7c850a0 TL |
834 | |
835 | done: | |
836 | return retval; | |
8bf5e5ca TL |
837 | } |
838 | ||
839 | ||
840 | /* | |
841 | * si470x_stop - switch off radio | |
842 | */ | |
843 | static int si470x_stop(struct si470x_device *radio) | |
844 | { | |
2fb88406 TL |
845 | int retval; |
846 | ||
847 | /* sysconfig 1 */ | |
848 | radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; | |
849 | retval = si470x_set_register(radio, SYSCONFIG1); | |
850 | if (retval < 0) | |
a7c850a0 | 851 | goto done; |
2fb88406 | 852 | |
8bf5e5ca TL |
853 | /* powercfg */ |
854 | radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; | |
855 | /* POWERCFG_ENABLE has to automatically go low */ | |
856 | radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; | |
a7c850a0 TL |
857 | retval = si470x_set_register(radio, POWERCFG); |
858 | ||
859 | done: | |
860 | return retval; | |
8bf5e5ca TL |
861 | } |
862 | ||
863 | ||
2fb88406 TL |
864 | /* |
865 | * si470x_rds_on - switch on rds reception | |
866 | */ | |
867 | static int si470x_rds_on(struct si470x_device *radio) | |
868 | { | |
57566ad2 TL |
869 | int retval; |
870 | ||
2fb88406 | 871 | /* sysconfig 1 */ |
57566ad2 | 872 | mutex_lock(&radio->lock); |
2fb88406 | 873 | radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS; |
57566ad2 TL |
874 | retval = si470x_set_register(radio, SYSCONFIG1); |
875 | if (retval < 0) | |
876 | radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; | |
877 | mutex_unlock(&radio->lock); | |
878 | ||
879 | return retval; | |
2fb88406 TL |
880 | } |
881 | ||
882 | ||
8bf5e5ca TL |
883 | |
884 | /************************************************************************** | |
885 | * RDS Driver Functions | |
886 | **************************************************************************/ | |
78656acd TL |
887 | |
888 | /* | |
889 | * si470x_rds - rds processing function | |
890 | */ | |
891 | static void si470x_rds(struct si470x_device *radio) | |
892 | { | |
5caf5134 TL |
893 | unsigned char blocknum; |
894 | unsigned short bler; /* rds block errors */ | |
895 | unsigned short rds; | |
896 | unsigned char tmpbuf[3]; | |
897 | ||
2fb88406 | 898 | /* get rds blocks */ |
78656acd TL |
899 | if (si470x_get_rds_registers(radio) < 0) |
900 | return; | |
901 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSR) == 0) { | |
902 | /* No RDS group ready */ | |
903 | return; | |
904 | } | |
905 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSS) == 0) { | |
906 | /* RDS decoder not synchronized */ | |
907 | return; | |
908 | } | |
909 | ||
5caf5134 TL |
910 | /* copy all four RDS blocks to internal buffer */ |
911 | mutex_lock(&radio->lock); | |
912 | for (blocknum = 0; blocknum < 4; blocknum++) { | |
913 | switch (blocknum) { | |
914 | default: | |
915 | bler = (radio->registers[STATUSRSSI] & | |
916 | STATUSRSSI_BLERA) >> 9; | |
917 | rds = radio->registers[RDSA]; | |
918 | break; | |
919 | case 1: | |
920 | bler = (radio->registers[READCHAN] & | |
921 | READCHAN_BLERB) >> 14; | |
922 | rds = radio->registers[RDSB]; | |
923 | break; | |
924 | case 2: | |
925 | bler = (radio->registers[READCHAN] & | |
926 | READCHAN_BLERC) >> 12; | |
927 | rds = radio->registers[RDSC]; | |
928 | break; | |
929 | case 3: | |
930 | bler = (radio->registers[READCHAN] & | |
931 | READCHAN_BLERD) >> 10; | |
932 | rds = radio->registers[RDSD]; | |
933 | break; | |
934 | }; | |
935 | ||
936 | /* Fill the V4L2 RDS buffer */ | |
5ad6b816 | 937 | put_unaligned_le16(rds, &tmpbuf); |
5caf5134 TL |
938 | tmpbuf[2] = blocknum; /* offset name */ |
939 | tmpbuf[2] |= blocknum << 3; /* received offset */ | |
940 | if (bler > max_rds_errors) | |
941 | tmpbuf[2] |= 0x80; /* uncorrectable errors */ | |
942 | else if (bler > 0) | |
943 | tmpbuf[2] |= 0x40; /* corrected error(s) */ | |
944 | ||
945 | /* copy RDS block to internal buffer */ | |
946 | memcpy(&radio->buffer[radio->wr_index], &tmpbuf, 3); | |
947 | radio->wr_index += 3; | |
948 | ||
949 | /* wrap write pointer */ | |
950 | if (radio->wr_index >= radio->buf_size) | |
951 | radio->wr_index = 0; | |
952 | ||
953 | /* check for overflow */ | |
954 | if (radio->wr_index == radio->rd_index) { | |
955 | /* increment and wrap read pointer */ | |
956 | radio->rd_index += 3; | |
957 | if (radio->rd_index >= radio->buf_size) | |
958 | radio->rd_index = 0; | |
78656acd | 959 | } |
78656acd | 960 | } |
5caf5134 | 961 | mutex_unlock(&radio->lock); |
78656acd | 962 | |
2fb88406 TL |
963 | /* wake up read queue */ |
964 | if (radio->wr_index != radio->rd_index) | |
965 | wake_up_interruptible(&radio->read_queue); | |
78656acd TL |
966 | } |
967 | ||
968 | ||
78656acd | 969 | /* |
2fb88406 | 970 | * si470x_work - rds work function |
78656acd TL |
971 | */ |
972 | static void si470x_work(struct work_struct *work) | |
973 | { | |
974 | struct si470x_device *radio = container_of(work, struct si470x_device, | |
5caf5134 | 975 | work.work); |
78656acd | 976 | |
a7c850a0 | 977 | /* safety checks */ |
ce5829e5 TL |
978 | if (radio->disconnected) |
979 | return; | |
2fb88406 | 980 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) |
78656acd TL |
981 | return; |
982 | ||
983 | si470x_rds(radio); | |
5caf5134 | 984 | schedule_delayed_work(&radio->work, msecs_to_jiffies(rds_poll_time)); |
78656acd TL |
985 | } |
986 | ||
987 | ||
988 | ||
989 | /************************************************************************** | |
8bf5e5ca | 990 | * File Operations Interface |
78656acd TL |
991 | **************************************************************************/ |
992 | ||
993 | /* | |
8bf5e5ca | 994 | * si470x_fops_read - read RDS data |
78656acd | 995 | */ |
8bf5e5ca TL |
996 | static ssize_t si470x_fops_read(struct file *file, char __user *buf, |
997 | size_t count, loff_t *ppos) | |
78656acd | 998 | { |
c170ecf4 | 999 | struct si470x_device *radio = video_drvdata(file); |
2fb88406 | 1000 | int retval = 0; |
5caf5134 | 1001 | unsigned int block_count = 0; |
78656acd | 1002 | |
2fb88406 TL |
1003 | /* switch on rds reception */ |
1004 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) { | |
1005 | si470x_rds_on(radio); | |
5caf5134 TL |
1006 | schedule_delayed_work(&radio->work, |
1007 | msecs_to_jiffies(rds_poll_time)); | |
2fb88406 | 1008 | } |
78656acd | 1009 | |
2fb88406 TL |
1010 | /* block if no new data available */ |
1011 | while (radio->wr_index == radio->rd_index) { | |
a7c850a0 TL |
1012 | if (file->f_flags & O_NONBLOCK) { |
1013 | retval = -EWOULDBLOCK; | |
1014 | goto done; | |
1015 | } | |
5caf5134 | 1016 | if (wait_event_interruptible(radio->read_queue, |
a7c850a0 TL |
1017 | radio->wr_index != radio->rd_index) < 0) { |
1018 | retval = -EINTR; | |
1019 | goto done; | |
1020 | } | |
78656acd TL |
1021 | } |
1022 | ||
2fb88406 TL |
1023 | /* calculate block count from byte count */ |
1024 | count /= 3; | |
1025 | ||
1026 | /* copy RDS block out of internal buffer and to user buffer */ | |
5caf5134 TL |
1027 | mutex_lock(&radio->lock); |
1028 | while (block_count < count) { | |
1029 | if (radio->rd_index == radio->wr_index) | |
1030 | break; | |
78656acd | 1031 | |
5caf5134 TL |
1032 | /* always transfer rds complete blocks */ |
1033 | if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3)) | |
1034 | /* retval = -EFAULT; */ | |
1035 | break; | |
2fb88406 | 1036 | |
5caf5134 TL |
1037 | /* increment and wrap read pointer */ |
1038 | radio->rd_index += 3; | |
1039 | if (radio->rd_index >= radio->buf_size) | |
1040 | radio->rd_index = 0; | |
78656acd | 1041 | |
5caf5134 TL |
1042 | /* increment counters */ |
1043 | block_count++; | |
1044 | buf += 3; | |
1045 | retval += 3; | |
78656acd | 1046 | } |
5caf5134 | 1047 | mutex_unlock(&radio->lock); |
78656acd | 1048 | |
a7c850a0 | 1049 | done: |
2fb88406 | 1050 | return retval; |
78656acd TL |
1051 | } |
1052 | ||
1053 | ||
1054 | /* | |
1055 | * si470x_fops_poll - poll RDS data | |
1056 | */ | |
1057 | static unsigned int si470x_fops_poll(struct file *file, | |
1058 | struct poll_table_struct *pts) | |
1059 | { | |
c170ecf4 | 1060 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1061 | int retval = 0; |
78656acd | 1062 | |
2fb88406 TL |
1063 | /* switch on rds reception */ |
1064 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) { | |
1065 | si470x_rds_on(radio); | |
5caf5134 TL |
1066 | schedule_delayed_work(&radio->work, |
1067 | msecs_to_jiffies(rds_poll_time)); | |
2fb88406 TL |
1068 | } |
1069 | ||
78656acd TL |
1070 | poll_wait(file, &radio->read_queue, pts); |
1071 | ||
2fb88406 | 1072 | if (radio->rd_index != radio->wr_index) |
a7c850a0 | 1073 | retval = POLLIN | POLLRDNORM; |
2fb88406 | 1074 | |
a7c850a0 | 1075 | return retval; |
78656acd TL |
1076 | } |
1077 | ||
1078 | ||
1079 | /* | |
1080 | * si470x_fops_open - file open | |
1081 | */ | |
bec43661 | 1082 | static int si470x_fops_open(struct file *file) |
78656acd | 1083 | { |
c170ecf4 | 1084 | struct si470x_device *radio = video_drvdata(file); |
57566ad2 | 1085 | int retval; |
78656acd | 1086 | |
d56dc612 | 1087 | lock_kernel(); |
78656acd | 1088 | radio->users++; |
57566ad2 TL |
1089 | |
1090 | retval = usb_autopm_get_interface(radio->intf); | |
1091 | if (retval < 0) { | |
1092 | radio->users--; | |
a7c850a0 TL |
1093 | retval = -EIO; |
1094 | goto done; | |
57566ad2 TL |
1095 | } |
1096 | ||
1097 | if (radio->users == 1) { | |
1098 | retval = si470x_start(radio); | |
1099 | if (retval < 0) | |
1100 | usb_autopm_put_interface(radio->intf); | |
57566ad2 | 1101 | } |
78656acd | 1102 | |
a7c850a0 | 1103 | done: |
d56dc612 | 1104 | unlock_kernel(); |
a7c850a0 | 1105 | return retval; |
78656acd TL |
1106 | } |
1107 | ||
1108 | ||
1109 | /* | |
1110 | * si470x_fops_release - file release | |
1111 | */ | |
bec43661 | 1112 | static int si470x_fops_release(struct file *file) |
78656acd | 1113 | { |
c170ecf4 | 1114 | struct si470x_device *radio = video_drvdata(file); |
ce5829e5 | 1115 | int retval = 0; |
78656acd | 1116 | |
a7c850a0 TL |
1117 | /* safety check */ |
1118 | if (!radio) { | |
1119 | retval = -ENODEV; | |
1120 | goto done; | |
1121 | } | |
78656acd | 1122 | |
ce5829e5 | 1123 | mutex_lock(&radio->disconnect_lock); |
78656acd TL |
1124 | radio->users--; |
1125 | if (radio->users == 0) { | |
ce5829e5 TL |
1126 | if (radio->disconnected) { |
1127 | video_unregister_device(radio->videodev); | |
1128 | kfree(radio->buffer); | |
1129 | kfree(radio); | |
1130 | goto unlock; | |
1131 | } | |
03dea86d | 1132 | |
2fb88406 | 1133 | /* stop rds reception */ |
5caf5134 | 1134 | cancel_delayed_work_sync(&radio->work); |
78656acd | 1135 | |
2fb88406 TL |
1136 | /* cancel read processes */ |
1137 | wake_up_interruptible(&radio->read_queue); | |
1138 | ||
57566ad2 TL |
1139 | retval = si470x_stop(radio); |
1140 | usb_autopm_put_interface(radio->intf); | |
78656acd TL |
1141 | } |
1142 | ||
ce5829e5 TL |
1143 | unlock: |
1144 | mutex_unlock(&radio->disconnect_lock); | |
a7c850a0 TL |
1145 | |
1146 | done: | |
ce5829e5 | 1147 | return retval; |
78656acd TL |
1148 | } |
1149 | ||
1150 | ||
8bf5e5ca TL |
1151 | /* |
1152 | * si470x_fops - file operations interface | |
1153 | */ | |
bec43661 | 1154 | static const struct v4l2_file_operations si470x_fops = { |
8bf5e5ca | 1155 | .owner = THIS_MODULE, |
8bf5e5ca TL |
1156 | .read = si470x_fops_read, |
1157 | .poll = si470x_fops_poll, | |
1158 | .ioctl = video_ioctl2, | |
8bf5e5ca TL |
1159 | .open = si470x_fops_open, |
1160 | .release = si470x_fops_release, | |
1161 | }; | |
1162 | ||
1163 | ||
1164 | ||
1165 | /************************************************************************** | |
1166 | * Video4Linux Interface | |
1167 | **************************************************************************/ | |
1168 | ||
1169 | /* | |
1170 | * si470x_v4l2_queryctrl - query control | |
1171 | */ | |
1172 | static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = { | |
8bf5e5ca TL |
1173 | { |
1174 | .id = V4L2_CID_AUDIO_VOLUME, | |
1175 | .type = V4L2_CTRL_TYPE_INTEGER, | |
1176 | .name = "Volume", | |
1177 | .minimum = 0, | |
1178 | .maximum = 15, | |
1179 | .step = 1, | |
1180 | .default_value = 15, | |
1181 | }, | |
8bf5e5ca TL |
1182 | { |
1183 | .id = V4L2_CID_AUDIO_MUTE, | |
1184 | .type = V4L2_CTRL_TYPE_BOOLEAN, | |
1185 | .name = "Mute", | |
1186 | .minimum = 0, | |
1187 | .maximum = 1, | |
1188 | .step = 1, | |
1189 | .default_value = 1, | |
1190 | }, | |
8bf5e5ca TL |
1191 | }; |
1192 | ||
1193 | ||
78656acd TL |
1194 | /* |
1195 | * si470x_vidioc_querycap - query device capabilities | |
1196 | */ | |
1197 | static int si470x_vidioc_querycap(struct file *file, void *priv, | |
1198 | struct v4l2_capability *capability) | |
1199 | { | |
1200 | strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver)); | |
1201 | strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); | |
1202 | sprintf(capability->bus_info, "USB"); | |
0e3301ec | 1203 | capability->version = DRIVER_KERNEL_VERSION; |
bbc8995f TL |
1204 | capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | |
1205 | V4L2_CAP_TUNER | V4L2_CAP_RADIO; | |
78656acd TL |
1206 | |
1207 | return 0; | |
1208 | } | |
1209 | ||
1210 | ||
78656acd TL |
1211 | /* |
1212 | * si470x_vidioc_queryctrl - enumerate control items | |
1213 | */ | |
1214 | static int si470x_vidioc_queryctrl(struct file *file, void *priv, | |
1215 | struct v4l2_queryctrl *qc) | |
1216 | { | |
eb6e3b86 | 1217 | unsigned char i = 0; |
0e3301ec | 1218 | int retval = -EINVAL; |
78656acd | 1219 | |
eb6e3b86 TL |
1220 | /* abort if qc->id is below V4L2_CID_BASE */ |
1221 | if (qc->id < V4L2_CID_BASE) | |
a7c850a0 TL |
1222 | goto done; |
1223 | ||
eb6e3b86 | 1224 | /* search video control */ |
8bf5e5ca | 1225 | for (i = 0; i < ARRAY_SIZE(si470x_v4l2_queryctrl); i++) { |
a7c850a0 | 1226 | if (qc->id == si470x_v4l2_queryctrl[i].id) { |
8bf5e5ca | 1227 | memcpy(qc, &(si470x_v4l2_queryctrl[i]), sizeof(*qc)); |
eb6e3b86 | 1228 | retval = 0; /* found */ |
0e3301ec | 1229 | break; |
78656acd TL |
1230 | } |
1231 | } | |
a7c850a0 | 1232 | |
eb6e3b86 TL |
1233 | /* disable unsupported base controls */ |
1234 | /* to satisfy kradio and such apps */ | |
1235 | if ((retval == -EINVAL) && (qc->id < V4L2_CID_LASTP1)) { | |
1236 | qc->flags = V4L2_CTRL_FLAG_DISABLED; | |
1237 | retval = 0; | |
1238 | } | |
1239 | ||
a7c850a0 | 1240 | done: |
0e3301ec TL |
1241 | if (retval < 0) |
1242 | printk(KERN_WARNING DRIVER_NAME | |
a7c850a0 | 1243 | ": query controls failed with %d\n", retval); |
0e3301ec | 1244 | return retval; |
78656acd TL |
1245 | } |
1246 | ||
1247 | ||
1248 | /* | |
1249 | * si470x_vidioc_g_ctrl - get the value of a control | |
1250 | */ | |
1251 | static int si470x_vidioc_g_ctrl(struct file *file, void *priv, | |
1252 | struct v4l2_control *ctrl) | |
1253 | { | |
c170ecf4 | 1254 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1255 | int retval = 0; |
78656acd | 1256 | |
a7c850a0 TL |
1257 | /* safety checks */ |
1258 | if (radio->disconnected) { | |
1259 | retval = -EIO; | |
1260 | goto done; | |
1261 | } | |
03dea86d | 1262 | |
78656acd | 1263 | switch (ctrl->id) { |
8bf5e5ca TL |
1264 | case V4L2_CID_AUDIO_VOLUME: |
1265 | ctrl->value = radio->registers[SYSCONFIG2] & | |
1266 | SYSCONFIG2_VOLUME; | |
1267 | break; | |
1268 | case V4L2_CID_AUDIO_MUTE: | |
1269 | ctrl->value = ((radio->registers[POWERCFG] & | |
1270 | POWERCFG_DMUTE) == 0) ? 1 : 0; | |
1271 | break; | |
a7c850a0 TL |
1272 | default: |
1273 | retval = -EINVAL; | |
78656acd TL |
1274 | } |
1275 | ||
a7c850a0 TL |
1276 | done: |
1277 | if (retval < 0) | |
1278 | printk(KERN_WARNING DRIVER_NAME | |
1279 | ": get control failed with %d\n", retval); | |
1280 | return retval; | |
78656acd TL |
1281 | } |
1282 | ||
1283 | ||
1284 | /* | |
1285 | * si470x_vidioc_s_ctrl - set the value of a control | |
1286 | */ | |
1287 | static int si470x_vidioc_s_ctrl(struct file *file, void *priv, | |
1288 | struct v4l2_control *ctrl) | |
1289 | { | |
c170ecf4 | 1290 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1291 | int retval = 0; |
78656acd | 1292 | |
a7c850a0 TL |
1293 | /* safety checks */ |
1294 | if (radio->disconnected) { | |
1295 | retval = -EIO; | |
1296 | goto done; | |
1297 | } | |
03dea86d | 1298 | |
78656acd | 1299 | switch (ctrl->id) { |
8bf5e5ca TL |
1300 | case V4L2_CID_AUDIO_VOLUME: |
1301 | radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; | |
1302 | radio->registers[SYSCONFIG2] |= ctrl->value; | |
0e3301ec TL |
1303 | retval = si470x_set_register(radio, SYSCONFIG2); |
1304 | break; | |
8bf5e5ca TL |
1305 | case V4L2_CID_AUDIO_MUTE: |
1306 | if (ctrl->value == 1) | |
1307 | radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; | |
1308 | else | |
1309 | radio->registers[POWERCFG] |= POWERCFG_DMUTE; | |
0e3301ec TL |
1310 | retval = si470x_set_register(radio, POWERCFG); |
1311 | break; | |
1312 | default: | |
1313 | retval = -EINVAL; | |
78656acd | 1314 | } |
a7c850a0 TL |
1315 | |
1316 | done: | |
0e3301ec TL |
1317 | if (retval < 0) |
1318 | printk(KERN_WARNING DRIVER_NAME | |
1319 | ": set control failed with %d\n", retval); | |
0e3301ec | 1320 | return retval; |
78656acd TL |
1321 | } |
1322 | ||
1323 | ||
1324 | /* | |
1325 | * si470x_vidioc_g_audio - get audio attributes | |
1326 | */ | |
1327 | static int si470x_vidioc_g_audio(struct file *file, void *priv, | |
1328 | struct v4l2_audio *audio) | |
1329 | { | |
617f5333 TL |
1330 | /* driver constants */ |
1331 | audio->index = 0; | |
78656acd TL |
1332 | strcpy(audio->name, "Radio"); |
1333 | audio->capability = V4L2_AUDCAP_STEREO; | |
617f5333 | 1334 | audio->mode = 0; |
78656acd | 1335 | |
617f5333 | 1336 | return 0; |
78656acd TL |
1337 | } |
1338 | ||
1339 | ||
1340 | /* | |
1341 | * si470x_vidioc_g_tuner - get tuner attributes | |
1342 | */ | |
1343 | static int si470x_vidioc_g_tuner(struct file *file, void *priv, | |
1344 | struct v4l2_tuner *tuner) | |
1345 | { | |
c170ecf4 | 1346 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1347 | int retval = 0; |
78656acd | 1348 | |
a7c850a0 TL |
1349 | /* safety checks */ |
1350 | if (radio->disconnected) { | |
1351 | retval = -EIO; | |
1352 | goto done; | |
1353 | } | |
33632d47 | 1354 | if (tuner->index != 0) { |
a7c850a0 TL |
1355 | retval = -EINVAL; |
1356 | goto done; | |
1357 | } | |
78656acd | 1358 | |
78656acd TL |
1359 | retval = si470x_get_register(radio, STATUSRSSI); |
1360 | if (retval < 0) | |
a7c850a0 | 1361 | goto done; |
78656acd | 1362 | |
33632d47 | 1363 | /* driver constants */ |
78656acd | 1364 | strcpy(tuner->name, "FM"); |
33632d47 | 1365 | tuner->type = V4L2_TUNER_RADIO; |
73a529f9 | 1366 | tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; |
33632d47 | 1367 | |
a17c0019 TL |
1368 | /* range limits */ |
1369 | switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { | |
8bf5e5ca TL |
1370 | /* 0: 87.5 - 108 MHz (USA, Europe, default) */ |
1371 | default: | |
1372 | tuner->rangelow = 87.5 * FREQ_MUL; | |
1373 | tuner->rangehigh = 108 * FREQ_MUL; | |
1374 | break; | |
1375 | /* 1: 76 - 108 MHz (Japan wide band) */ | |
1376 | case 1 : | |
1377 | tuner->rangelow = 76 * FREQ_MUL; | |
1378 | tuner->rangehigh = 108 * FREQ_MUL; | |
1379 | break; | |
1380 | /* 2: 76 - 90 MHz (Japan) */ | |
1381 | case 2 : | |
1382 | tuner->rangelow = 76 * FREQ_MUL; | |
1383 | tuner->rangehigh = 90 * FREQ_MUL; | |
1384 | break; | |
78656acd | 1385 | }; |
78656acd | 1386 | |
73a529f9 | 1387 | /* stereo indicator == stereo (instead of mono) */ |
78656acd | 1388 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 1) |
73a529f9 | 1389 | tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; |
78656acd | 1390 | else |
73a529f9 TL |
1391 | tuner->rxsubchans = V4L2_TUNER_SUB_MONO; |
1392 | ||
1393 | /* mono/stereo selector */ | |
1394 | if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 1) | |
78656acd | 1395 | tuner->audmode = V4L2_TUNER_MODE_MONO; |
73a529f9 TL |
1396 | else |
1397 | tuner->audmode = V4L2_TUNER_MODE_STEREO; | |
78656acd TL |
1398 | |
1399 | /* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */ | |
1400 | tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI) | |
1401 | * 0x0101; | |
1402 | ||
1403 | /* automatic frequency control: -1: freq to low, 1 freq to high */ | |
ace7d4bb TL |
1404 | /* AFCRL does only indicate that freq. differs, not if too low/high */ |
1405 | tuner->afc = (radio->registers[STATUSRSSI] & STATUSRSSI_AFCRL) ? 1 : 0; | |
78656acd | 1406 | |
a7c850a0 TL |
1407 | done: |
1408 | if (retval < 0) | |
1409 | printk(KERN_WARNING DRIVER_NAME | |
1410 | ": get tuner failed with %d\n", retval); | |
1411 | return retval; | |
78656acd TL |
1412 | } |
1413 | ||
1414 | ||
1415 | /* | |
1416 | * si470x_vidioc_s_tuner - set tuner attributes | |
1417 | */ | |
1418 | static int si470x_vidioc_s_tuner(struct file *file, void *priv, | |
1419 | struct v4l2_tuner *tuner) | |
1420 | { | |
c170ecf4 | 1421 | struct si470x_device *radio = video_drvdata(file); |
33632d47 | 1422 | int retval = -EINVAL; |
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 | 1430 | goto done; |
78656acd | 1431 | |
73a529f9 TL |
1432 | /* mono/stereo selector */ |
1433 | switch (tuner->audmode) { | |
1434 | case V4L2_TUNER_MODE_MONO: | |
78656acd | 1435 | radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */ |
73a529f9 TL |
1436 | break; |
1437 | case V4L2_TUNER_MODE_STEREO: | |
78656acd | 1438 | radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */ |
73a529f9 TL |
1439 | break; |
1440 | default: | |
1441 | goto done; | |
1442 | } | |
78656acd | 1443 | |
0e3301ec | 1444 | retval = si470x_set_register(radio, POWERCFG); |
a7c850a0 TL |
1445 | |
1446 | done: | |
0e3301ec TL |
1447 | if (retval < 0) |
1448 | printk(KERN_WARNING DRIVER_NAME | |
1449 | ": set tuner failed with %d\n", retval); | |
0e3301ec | 1450 | return retval; |
78656acd TL |
1451 | } |
1452 | ||
1453 | ||
1454 | /* | |
1455 | * si470x_vidioc_g_frequency - get tuner or modulator radio frequency | |
1456 | */ | |
1457 | static int si470x_vidioc_g_frequency(struct file *file, void *priv, | |
1458 | struct v4l2_frequency *freq) | |
1459 | { | |
c170ecf4 | 1460 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1461 | int retval = 0; |
78656acd | 1462 | |
a7c850a0 TL |
1463 | /* safety checks */ |
1464 | if (radio->disconnected) { | |
1465 | retval = -EIO; | |
1466 | goto done; | |
1467 | } | |
33632d47 | 1468 | if (freq->tuner != 0) { |
a7c850a0 TL |
1469 | retval = -EINVAL; |
1470 | goto done; | |
1471 | } | |
1472 | ||
33632d47 | 1473 | freq->type = V4L2_TUNER_RADIO; |
a7c850a0 | 1474 | retval = si470x_get_freq(radio, &freq->frequency); |
03dea86d | 1475 | |
a7c850a0 TL |
1476 | done: |
1477 | if (retval < 0) | |
1478 | printk(KERN_WARNING DRIVER_NAME | |
1479 | ": get frequency failed with %d\n", retval); | |
1480 | return retval; | |
78656acd TL |
1481 | } |
1482 | ||
1483 | ||
1484 | /* | |
1485 | * si470x_vidioc_s_frequency - set tuner or modulator radio frequency | |
1486 | */ | |
1487 | static int si470x_vidioc_s_frequency(struct file *file, void *priv, | |
1488 | struct v4l2_frequency *freq) | |
1489 | { | |
c170ecf4 | 1490 | struct si470x_device *radio = video_drvdata(file); |
a7c850a0 | 1491 | int retval = 0; |
78656acd | 1492 | |
a7c850a0 TL |
1493 | /* safety checks */ |
1494 | if (radio->disconnected) { | |
1495 | retval = -EIO; | |
1496 | goto done; | |
1497 | } | |
33632d47 | 1498 | if (freq->tuner != 0) { |
a7c850a0 TL |
1499 | retval = -EINVAL; |
1500 | goto done; | |
1501 | } | |
78656acd | 1502 | |
0e3301ec | 1503 | retval = si470x_set_freq(radio, freq->frequency); |
a7c850a0 TL |
1504 | |
1505 | done: | |
0e3301ec TL |
1506 | if (retval < 0) |
1507 | printk(KERN_WARNING DRIVER_NAME | |
1508 | ": set frequency failed with %d\n", retval); | |
a7c850a0 | 1509 | return retval; |
78656acd TL |
1510 | } |
1511 | ||
1512 | ||
bbc8995f TL |
1513 | /* |
1514 | * si470x_vidioc_s_hw_freq_seek - set hardware frequency seek | |
1515 | */ | |
1516 | static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv, | |
1517 | struct v4l2_hw_freq_seek *seek) | |
1518 | { | |
c170ecf4 | 1519 | struct si470x_device *radio = video_drvdata(file); |
bbc8995f TL |
1520 | int retval = 0; |
1521 | ||
1522 | /* safety checks */ | |
1523 | if (radio->disconnected) { | |
1524 | retval = -EIO; | |
1525 | goto done; | |
1526 | } | |
33632d47 | 1527 | if (seek->tuner != 0) { |
bbc8995f TL |
1528 | retval = -EINVAL; |
1529 | goto done; | |
1530 | } | |
1531 | ||
1532 | retval = si470x_set_seek(radio, seek->wrap_around, seek->seek_upward); | |
1533 | ||
1534 | done: | |
1535 | if (retval < 0) | |
1536 | printk(KERN_WARNING DRIVER_NAME | |
1537 | ": set hardware frequency seek failed with %d\n", | |
1538 | retval); | |
1539 | return retval; | |
1540 | } | |
1541 | ||
374ab686 TL |
1542 | |
1543 | /* | |
1544 | * si470x_ioctl_ops - video device ioctl operations | |
1545 | */ | |
a399810c | 1546 | static const struct v4l2_ioctl_ops si470x_ioctl_ops = { |
8bf5e5ca | 1547 | .vidioc_querycap = si470x_vidioc_querycap, |
8bf5e5ca TL |
1548 | .vidioc_queryctrl = si470x_vidioc_queryctrl, |
1549 | .vidioc_g_ctrl = si470x_vidioc_g_ctrl, | |
1550 | .vidioc_s_ctrl = si470x_vidioc_s_ctrl, | |
1551 | .vidioc_g_audio = si470x_vidioc_g_audio, | |
8bf5e5ca TL |
1552 | .vidioc_g_tuner = si470x_vidioc_g_tuner, |
1553 | .vidioc_s_tuner = si470x_vidioc_s_tuner, | |
1554 | .vidioc_g_frequency = si470x_vidioc_g_frequency, | |
1555 | .vidioc_s_frequency = si470x_vidioc_s_frequency, | |
bbc8995f | 1556 | .vidioc_s_hw_freq_seek = si470x_vidioc_s_hw_freq_seek, |
a399810c HV |
1557 | }; |
1558 | ||
374ab686 | 1559 | |
a399810c | 1560 | /* |
374ab686 | 1561 | * si470x_viddev_template - video device interface |
a399810c HV |
1562 | */ |
1563 | static struct video_device si470x_viddev_template = { | |
1564 | .fops = &si470x_fops, | |
a399810c | 1565 | .name = DRIVER_NAME, |
a399810c | 1566 | .release = video_device_release, |
374ab686 | 1567 | .ioctl_ops = &si470x_ioctl_ops, |
8bf5e5ca TL |
1568 | }; |
1569 | ||
1570 | ||
1571 | ||
1572 | /************************************************************************** | |
1573 | * USB Interface | |
1574 | **************************************************************************/ | |
1575 | ||
1576 | /* | |
1577 | * si470x_usb_driver_probe - probe for the device | |
1578 | */ | |
1579 | static int si470x_usb_driver_probe(struct usb_interface *intf, | |
1580 | const struct usb_device_id *id) | |
1581 | { | |
1582 | struct si470x_device *radio; | |
a7c850a0 | 1583 | int retval = 0; |
8bf5e5ca | 1584 | |
a7c850a0 | 1585 | /* private data allocation and initialization */ |
5caf5134 | 1586 | radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL); |
a7c850a0 TL |
1587 | if (!radio) { |
1588 | retval = -ENOMEM; | |
5caf5134 | 1589 | goto err_initial; |
a7c850a0 | 1590 | } |
8bf5e5ca | 1591 | radio->users = 0; |
ce5829e5 | 1592 | radio->disconnected = 0; |
8bf5e5ca | 1593 | radio->usbdev = interface_to_usbdev(intf); |
57566ad2 | 1594 | radio->intf = intf; |
ce5829e5 | 1595 | mutex_init(&radio->disconnect_lock); |
5caf5134 | 1596 | mutex_init(&radio->lock); |
a7c850a0 TL |
1597 | |
1598 | /* video device allocation and initialization */ | |
1599 | radio->videodev = video_device_alloc(); | |
1600 | if (!radio->videodev) { | |
1601 | retval = -ENOMEM; | |
1602 | goto err_radio; | |
1603 | } | |
1604 | memcpy(radio->videodev, &si470x_viddev_template, | |
1605 | sizeof(si470x_viddev_template)); | |
8bf5e5ca | 1606 | video_set_drvdata(radio->videodev, radio); |
8bf5e5ca TL |
1607 | |
1608 | /* show some infos about the specific device */ | |
a7c850a0 TL |
1609 | if (si470x_get_all_registers(radio) < 0) { |
1610 | retval = -EIO; | |
5caf5134 | 1611 | goto err_all; |
a7c850a0 | 1612 | } |
5caf5134 | 1613 | printk(KERN_INFO DRIVER_NAME ": DeviceID=0x%4.4hx ChipID=0x%4.4hx\n", |
8bf5e5ca TL |
1614 | radio->registers[DEVICEID], radio->registers[CHIPID]); |
1615 | ||
1616 | /* check if firmware is current */ | |
1617 | if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) | |
5caf5134 TL |
1618 | < RADIO_SW_VERSION_CURRENT) { |
1619 | printk(KERN_WARNING DRIVER_NAME | |
1620 | ": This driver is known to work with " | |
1621 | "firmware version %hu,\n", RADIO_SW_VERSION_CURRENT); | |
1622 | printk(KERN_WARNING DRIVER_NAME | |
1623 | ": but the device has firmware version %hu.\n", | |
1624 | radio->registers[CHIPID] & CHIPID_FIRMWARE); | |
1625 | printk(KERN_WARNING DRIVER_NAME | |
1626 | ": If you have some trouble using this driver,\n"); | |
8bf5e5ca | 1627 | printk(KERN_WARNING DRIVER_NAME |
5caf5134 TL |
1628 | ": please report to V4L ML at " |
1629 | "video4linux-list@redhat.com\n"); | |
1630 | } | |
8bf5e5ca TL |
1631 | |
1632 | /* set initial frequency */ | |
1633 | si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ | |
1634 | ||
5caf5134 | 1635 | /* rds buffer allocation */ |
8bf5e5ca TL |
1636 | radio->buf_size = rds_buf * 3; |
1637 | radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); | |
a7c850a0 TL |
1638 | if (!radio->buffer) { |
1639 | retval = -EIO; | |
5caf5134 | 1640 | goto err_all; |
a7c850a0 | 1641 | } |
5caf5134 TL |
1642 | |
1643 | /* rds buffer configuration */ | |
8bf5e5ca TL |
1644 | radio->wr_index = 0; |
1645 | radio->rd_index = 0; | |
8bf5e5ca | 1646 | init_waitqueue_head(&radio->read_queue); |
8bf5e5ca | 1647 | |
5caf5134 TL |
1648 | /* prepare rds work function */ |
1649 | INIT_DELAYED_WORK(&radio->work, si470x_work); | |
1650 | ||
1651 | /* register video device */ | |
cba99ae8 HV |
1652 | retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr); |
1653 | if (retval) { | |
5caf5134 TL |
1654 | printk(KERN_WARNING DRIVER_NAME |
1655 | ": Could not register video device\n"); | |
1656 | goto err_all; | |
1657 | } | |
1658 | usb_set_intfdata(intf, radio); | |
8bf5e5ca TL |
1659 | |
1660 | return 0; | |
5caf5134 TL |
1661 | err_all: |
1662 | video_device_release(radio->videodev); | |
1663 | kfree(radio->buffer); | |
1664 | err_radio: | |
1665 | kfree(radio); | |
1666 | err_initial: | |
1667 | return retval; | |
8bf5e5ca TL |
1668 | } |
1669 | ||
1670 | ||
57566ad2 TL |
1671 | /* |
1672 | * si470x_usb_driver_suspend - suspend the device | |
1673 | */ | |
1674 | static int si470x_usb_driver_suspend(struct usb_interface *intf, | |
1675 | pm_message_t message) | |
1676 | { | |
1677 | struct si470x_device *radio = usb_get_intfdata(intf); | |
1678 | ||
1679 | printk(KERN_INFO DRIVER_NAME ": suspending now...\n"); | |
1680 | ||
1681 | cancel_delayed_work_sync(&radio->work); | |
1682 | ||
1683 | return 0; | |
1684 | } | |
1685 | ||
1686 | ||
1687 | /* | |
1688 | * si470x_usb_driver_resume - resume the device | |
1689 | */ | |
1690 | static int si470x_usb_driver_resume(struct usb_interface *intf) | |
1691 | { | |
1692 | struct si470x_device *radio = usb_get_intfdata(intf); | |
1693 | ||
1694 | printk(KERN_INFO DRIVER_NAME ": resuming now...\n"); | |
1695 | ||
1696 | mutex_lock(&radio->lock); | |
1697 | if (radio->users && radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) | |
1698 | schedule_delayed_work(&radio->work, | |
1699 | msecs_to_jiffies(rds_poll_time)); | |
1700 | mutex_unlock(&radio->lock); | |
1701 | ||
1702 | return 0; | |
1703 | } | |
1704 | ||
1705 | ||
8bf5e5ca TL |
1706 | /* |
1707 | * si470x_usb_driver_disconnect - disconnect the device | |
1708 | */ | |
1709 | static void si470x_usb_driver_disconnect(struct usb_interface *intf) | |
1710 | { | |
1711 | struct si470x_device *radio = usb_get_intfdata(intf); | |
1712 | ||
ce5829e5 TL |
1713 | mutex_lock(&radio->disconnect_lock); |
1714 | radio->disconnected = 1; | |
5caf5134 | 1715 | cancel_delayed_work_sync(&radio->work); |
8bf5e5ca | 1716 | usb_set_intfdata(intf, NULL); |
ce5829e5 TL |
1717 | if (radio->users == 0) { |
1718 | video_unregister_device(radio->videodev); | |
1719 | kfree(radio->buffer); | |
1720 | kfree(radio); | |
1721 | } | |
1722 | mutex_unlock(&radio->disconnect_lock); | |
8bf5e5ca TL |
1723 | } |
1724 | ||
1725 | ||
1726 | /* | |
1727 | * si470x_usb_driver - usb driver interface | |
1728 | */ | |
1729 | static struct usb_driver si470x_usb_driver = { | |
57566ad2 TL |
1730 | .name = DRIVER_NAME, |
1731 | .probe = si470x_usb_driver_probe, | |
1732 | .disconnect = si470x_usb_driver_disconnect, | |
1733 | .suspend = si470x_usb_driver_suspend, | |
1734 | .resume = si470x_usb_driver_resume, | |
1735 | .id_table = si470x_usb_driver_id_table, | |
1736 | .supports_autosuspend = 1, | |
8bf5e5ca TL |
1737 | }; |
1738 | ||
1739 | ||
78656acd TL |
1740 | |
1741 | /************************************************************************** | |
8bf5e5ca | 1742 | * Module Interface |
78656acd TL |
1743 | **************************************************************************/ |
1744 | ||
1745 | /* | |
1746 | * si470x_module_init - module init | |
1747 | */ | |
1748 | static int __init si470x_module_init(void) | |
1749 | { | |
0e3301ec | 1750 | printk(KERN_INFO DRIVER_DESC ", Version " DRIVER_VERSION "\n"); |
78656acd TL |
1751 | return usb_register(&si470x_usb_driver); |
1752 | } | |
1753 | ||
1754 | ||
1755 | /* | |
1756 | * si470x_module_exit - module exit | |
1757 | */ | |
1758 | static void __exit si470x_module_exit(void) | |
1759 | { | |
1760 | usb_deregister(&si470x_usb_driver); | |
1761 | } | |
1762 | ||
1763 | ||
1764 | module_init(si470x_module_init); | |
1765 | module_exit(si470x_module_exit); | |
1766 | ||
1767 | MODULE_LICENSE("GPL"); | |
1768 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
1769 | MODULE_DESCRIPTION(DRIVER_DESC); | |
0e3301ec | 1770 | MODULE_VERSION(DRIVER_VERSION); |