Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 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) |
| 7 | * |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 8 | * Copyright (c) 2008 Tobias Lorenz <tobias.lorenz@gmx.net> |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of the GNU General Public License as published by |
| 12 | * the Free Software Foundation; either version 2 of the License, or |
| 13 | * (at your option) any later version. |
| 14 | * |
| 15 | * This program is distributed in the hope that it will be useful, |
| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | * GNU General Public License for more details. |
| 19 | * |
| 20 | * You should have received a copy of the GNU General Public License |
| 21 | * along with this program; if not, write to the Free Software |
| 22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 23 | */ |
| 24 | |
| 25 | |
| 26 | /* |
| 27 | * History: |
| 28 | * 2008-01-12 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 29 | * Version 1.0.0 |
| 30 | * - First working version |
| 31 | * 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net> |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 32 | * Version 1.0.1 |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 33 | * - Improved error handling, every function now returns errno |
| 34 | * - Improved multi user access (start/mute/stop) |
| 35 | * - Channel doesn't get lost anymore after start/mute/stop |
| 36 | * - RDS support added (polling mode via interrupt EP 1) |
| 37 | * - marked default module parameters with *value* |
| 38 | * - switched from bit structs to bit masks |
| 39 | * - header file cleaned and integrated |
| 40 | * 2008-01-14 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 41 | * Version 1.0.2 |
| 42 | * - hex values are now lower case |
| 43 | * - commented USB ID for ADS/Tech moved on todo list |
| 44 | * - blacklisted si470x in hid-quirks.c |
| 45 | * - rds buffer handling functions integrated into *_work, *_read |
| 46 | * - rds_command in si470x_poll exchanged against simple retval |
| 47 | * - check for firmware version 15 |
| 48 | * - code order and prototypes still remain the same |
| 49 | * - spacing and bottom of band codes remain the same |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 50 | * 2008-01-16 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 51 | * Version 1.0.3 |
| 52 | * - code reordered to avoid function prototypes |
| 53 | * - switch/case defaults are now more user-friendly |
| 54 | * - unified comment style |
| 55 | * - applied all checkpatch.pl v1.12 suggestions |
| 56 | * except the warning about the too long lines with bit comments |
| 57 | * - renamed FMRADIO to RADIO to cut line length (checkpatch.pl) |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 58 | * 2008-01-22 Tobias Lorenz <tobias.lorenz@gmx.net> |
| 59 | * Version 1.0.4 |
| 60 | * - avoid poss. locking when doing copy_to_user which may sleep |
| 61 | * - RDS is automatically activated on read now |
| 62 | * - code cleaned of unnecessary rds_commands |
| 63 | * - USB Vendor/Product ID for ADS/Tech FM Radio Receiver verified |
| 64 | * (thanks to Guillaume RAMOUSSE) |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 65 | * |
| 66 | * ToDo: |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 67 | * - add seeking support |
| 68 | * - add firmware download/update support |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 69 | * - RDS support: interrupt mode, instead of polling |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 70 | * - add LED status output (check if that's not already done in firmware) |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 71 | */ |
| 72 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 73 | |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 74 | /* driver definitions */ |
| 75 | #define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>" |
| 76 | #define DRIVER_NAME "radio-si470x" |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 77 | #define DRIVER_VERSION KERNEL_VERSION(1, 0, 4) |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 78 | #define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver" |
| 79 | #define DRIVER_DESC "USB radio driver for Si470x FM Radio Receivers" |
| 80 | |
| 81 | |
| 82 | /* kernel includes */ |
| 83 | #include <linux/kernel.h> |
| 84 | #include <linux/module.h> |
| 85 | #include <linux/init.h> |
| 86 | #include <linux/slab.h> |
| 87 | #include <linux/input.h> |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 88 | #include <linux/usb.h> |
| 89 | #include <linux/hid.h> |
| 90 | #include <linux/version.h> |
Mauro Carvalho Chehab | 387d447 | 2008-01-15 11:25:10 -0300 | [diff] [blame] | 91 | #include <linux/videodev2.h> |
| 92 | #include <media/v4l2-common.h> |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 93 | #include <media/rds.h> |
| 94 | |
| 95 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 96 | /* USB Device ID List */ |
| 97 | static struct usb_device_id si470x_usb_driver_id_table[] = { |
| 98 | /* Silicon Labs USB FM Radio Reference Design */ |
| 99 | { USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) }, |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 100 | /* ADS/Tech FM Radio Receiver (formerly Instant FM Music) */ |
| 101 | { USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) }, |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 102 | /* Terminating entry */ |
| 103 | { } |
| 104 | }; |
| 105 | MODULE_DEVICE_TABLE(usb, si470x_usb_driver_id_table); |
| 106 | |
| 107 | |
| 108 | |
| 109 | /************************************************************************** |
| 110 | * Module Parameters |
| 111 | **************************************************************************/ |
| 112 | |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 113 | /* Radio Nr */ |
| 114 | static int radio_nr = -1; |
| 115 | module_param(radio_nr, int, 0); |
| 116 | MODULE_PARM_DESC(radio_nr, "Radio Nr"); |
| 117 | |
| 118 | /* Spacing (kHz) */ |
| 119 | /* 0: 200 kHz (USA, Australia) */ |
| 120 | /* 1: 100 kHz (Europe, Japan) */ |
| 121 | /* 2: 50 kHz */ |
| 122 | static int space = 2; |
| 123 | module_param(space, int, 0); |
| 124 | MODULE_PARM_DESC(radio_nr, "Spacing: 0=200kHz 1=100kHz *2=50kHz*"); |
| 125 | |
| 126 | /* Bottom of Band (MHz) */ |
| 127 | /* 0: 87.5 - 108 MHz (USA, Europe)*/ |
| 128 | /* 1: 76 - 108 MHz (Japan wide band) */ |
| 129 | /* 2: 76 - 90 MHz (Japan) */ |
| 130 | static int band = 1; |
| 131 | module_param(band, int, 0); |
| 132 | MODULE_PARM_DESC(radio_nr, "Band: 0=87.5..108MHz *1=76..108MHz* 2=76..90MHz"); |
| 133 | |
| 134 | /* De-emphasis */ |
| 135 | /* 0: 75 us (USA) */ |
| 136 | /* 1: 50 us (Europe, Australia, Japan) */ |
| 137 | static int de = 1; |
| 138 | module_param(de, int, 0); |
| 139 | MODULE_PARM_DESC(radio_nr, "De-emphasis: 0=75us *1=50us*"); |
| 140 | |
| 141 | /* USB timeout */ |
| 142 | static int usb_timeout = 500; |
| 143 | module_param(usb_timeout, int, 0); |
| 144 | MODULE_PARM_DESC(usb_timeout, "USB timeout (ms): *500*"); |
| 145 | |
| 146 | /* Seek retries */ |
| 147 | static int seek_retries = 100; |
| 148 | module_param(seek_retries, int, 0); |
| 149 | MODULE_PARM_DESC(seek_retries, "Seek retries: *100*"); |
| 150 | |
| 151 | /* RDS buffer blocks */ |
| 152 | static int rds_buf = 100; |
| 153 | module_param(rds_buf, int, 0); |
| 154 | MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*"); |
| 155 | |
| 156 | /* RDS maximum block errors */ |
| 157 | static int max_rds_errors = 1; |
| 158 | /* 0 means 0 errors requiring correction */ |
| 159 | /* 1 means 1-2 errors requiring correction (used by original USBRadio.exe) */ |
| 160 | /* 2 means 3-5 errors requiring correction */ |
| 161 | /* 3 means 6+ errors or errors in checkword, correction not possible */ |
| 162 | module_param(max_rds_errors, int, 0); |
| 163 | MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*"); |
| 164 | |
| 165 | /* RDS poll frequency */ |
| 166 | static int rds_poll_time = 40; |
| 167 | /* 40 is used by the original USBRadio.exe */ |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 168 | /* 50 is used by radio-cadet */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 169 | /* 75 should be okay */ |
| 170 | /* 80 is the usual RDS receive interval */ |
| 171 | module_param(rds_poll_time, int, 0); |
| 172 | MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); |
| 173 | |
| 174 | |
| 175 | |
| 176 | /************************************************************************** |
| 177 | * Register Definitions |
| 178 | **************************************************************************/ |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 179 | #define RADIO_REGISTER_SIZE 2 /* 16 register bit width */ |
| 180 | #define RADIO_REGISTER_NUM 16 /* DEVICEID ... RDSD */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 181 | #define RDS_REGISTER_NUM 6 /* STATUSRSSI ... RDSD */ |
| 182 | |
| 183 | #define DEVICEID 0 /* Device ID */ |
| 184 | #define DEVICEID_PN 0xf000 /* bits 15..12: Part Number */ |
| 185 | #define DEVICEID_MFGID 0x0fff /* bits 11..00: Manufacturer ID */ |
| 186 | |
| 187 | #define CHIPID 1 /* Chip ID */ |
| 188 | #define CHIPID_REV 0xfc00 /* bits 15..10: Chip Version */ |
| 189 | #define CHIPID_DEV 0x0200 /* bits 09..09: Device */ |
| 190 | #define CHIPID_FIRMWARE 0x01ff /* bits 08..00: Firmware Version */ |
| 191 | |
| 192 | #define POWERCFG 2 /* Power Configuration */ |
| 193 | #define POWERCFG_DSMUTE 0x8000 /* bits 15..15: Softmute Disable */ |
| 194 | #define POWERCFG_DMUTE 0x4000 /* bits 14..14: Mute Disable */ |
| 195 | #define POWERCFG_MONO 0x2000 /* bits 13..13: Mono Select */ |
| 196 | #define POWERCFG_RDSM 0x0800 /* bits 11..11: RDS Mode (Si4701 only) */ |
| 197 | #define POWERCFG_SKMODE 0x0400 /* bits 10..10: Seek Mode */ |
| 198 | #define POWERCFG_SEEKUP 0x0200 /* bits 09..09: Seek Direction */ |
| 199 | #define POWERCFG_SEEK 0x0100 /* bits 08..08: Seek */ |
| 200 | #define POWERCFG_DISABLE 0x0040 /* bits 06..06: Powerup Disable */ |
| 201 | #define POWERCFG_ENABLE 0x0001 /* bits 00..00: Powerup Enable */ |
| 202 | |
| 203 | #define CHANNEL 3 /* Channel */ |
| 204 | #define CHANNEL_TUNE 0x8000 /* bits 15..15: Tune */ |
| 205 | #define CHANNEL_CHAN 0x03ff /* bits 09..00: Channel Select */ |
| 206 | |
| 207 | #define SYSCONFIG1 4 /* System Configuration 1 */ |
| 208 | #define SYSCONFIG1_RDSIEN 0x8000 /* bits 15..15: RDS Interrupt Enable (Si4701 only) */ |
| 209 | #define SYSCONFIG1_STCIEN 0x4000 /* bits 14..14: Seek/Tune Complete Interrupt Enable */ |
| 210 | #define SYSCONFIG1_RDS 0x1000 /* bits 12..12: RDS Enable (Si4701 only) */ |
| 211 | #define SYSCONFIG1_DE 0x0800 /* bits 11..11: De-emphasis (0=75us 1=50us) */ |
| 212 | #define SYSCONFIG1_AGCD 0x0400 /* bits 10..10: AGC Disable */ |
| 213 | #define SYSCONFIG1_BLNDADJ 0x00c0 /* bits 07..06: Stereo/Mono Blend Level Adjustment */ |
| 214 | #define SYSCONFIG1_GPIO3 0x0030 /* bits 05..04: General Purpose I/O 3 */ |
| 215 | #define SYSCONFIG1_GPIO2 0x000c /* bits 03..02: General Purpose I/O 2 */ |
| 216 | #define SYSCONFIG1_GPIO1 0x0003 /* bits 01..00: General Purpose I/O 1 */ |
| 217 | |
| 218 | #define SYSCONFIG2 5 /* System Configuration 2 */ |
| 219 | #define SYSCONFIG2_SEEKTH 0xff00 /* bits 15..08: RSSI Seek Threshold */ |
| 220 | #define SYSCONFIG2_BAND 0x0080 /* bits 07..06: Band Select */ |
| 221 | #define SYSCONFIG2_SPACE 0x0030 /* bits 05..04: Channel Spacing */ |
| 222 | #define SYSCONFIG2_VOLUME 0x000f /* bits 03..00: Volume */ |
| 223 | |
| 224 | #define SYSCONFIG3 6 /* System Configuration 3 */ |
| 225 | #define SYSCONFIG3_SMUTER 0xc000 /* bits 15..14: Softmute Attack/Recover Rate */ |
| 226 | #define SYSCONFIG3_SMUTEA 0x3000 /* bits 13..12: Softmute Attenuation */ |
| 227 | #define SYSCONFIG3_SKSNR 0x00f0 /* bits 07..04: Seek SNR Threshold */ |
| 228 | #define SYSCONFIG3_SKCNT 0x000f /* bits 03..00: Seek FM Impulse Detection Threshold */ |
| 229 | |
| 230 | #define TEST1 7 /* Test 1 */ |
| 231 | #define TEST1_AHIZEN 0x4000 /* bits 14..14: Audio High-Z Enable */ |
| 232 | |
| 233 | #define TEST2 8 /* Test 2 */ |
| 234 | /* TEST2 only contains reserved bits */ |
| 235 | |
| 236 | #define BOOTCONFIG 9 /* Boot Configuration */ |
| 237 | /* BOOTCONFIG only contains reserved bits */ |
| 238 | |
| 239 | #define STATUSRSSI 10 /* Status RSSI */ |
| 240 | #define STATUSRSSI_RDSR 0x8000 /* bits 15..15: RDS Ready (Si4701 only) */ |
| 241 | #define STATUSRSSI_STC 0x4000 /* bits 14..14: Seek/Tune Complete */ |
| 242 | #define STATUSRSSI_SF 0x2000 /* bits 13..13: Seek Fail/Band Limit */ |
| 243 | #define STATUSRSSI_AFCRL 0x1000 /* bits 12..12: AFC Rail */ |
| 244 | #define STATUSRSSI_RDSS 0x0800 /* bits 11..11: RDS Synchronized (Si4701 only) */ |
| 245 | #define STATUSRSSI_BLERA 0x0600 /* bits 10..09: RDS Block A Errors (Si4701 only) */ |
| 246 | #define STATUSRSSI_ST 0x0100 /* bits 08..08: Stereo Indicator */ |
| 247 | #define STATUSRSSI_RSSI 0x00ff /* bits 07..00: RSSI (Received Signal Strength Indicator) */ |
| 248 | |
| 249 | #define READCHAN 11 /* Read Channel */ |
| 250 | #define READCHAN_BLERB 0xc000 /* bits 15..14: RDS Block D Errors (Si4701 only) */ |
| 251 | #define READCHAN_BLERC 0x3000 /* bits 13..12: RDS Block C Errors (Si4701 only) */ |
| 252 | #define READCHAN_BLERD 0x0c00 /* bits 11..10: RDS Block B Errors (Si4701 only) */ |
| 253 | #define READCHAN_READCHAN 0x03ff /* bits 09..00: Read Channel */ |
| 254 | |
| 255 | #define RDSA 12 /* RDSA */ |
| 256 | #define RDSA_RDSA 0xffff /* bits 15..00: RDS Block A Data (Si4701 only) */ |
| 257 | |
| 258 | #define RDSB 13 /* RDSB */ |
| 259 | #define RDSB_RDSB 0xffff /* bits 15..00: RDS Block B Data (Si4701 only) */ |
| 260 | |
| 261 | #define RDSC 14 /* RDSC */ |
| 262 | #define RDSC_RDSC 0xffff /* bits 15..00: RDS Block C Data (Si4701 only) */ |
| 263 | |
| 264 | #define RDSD 15 /* RDSD */ |
| 265 | #define RDSD_RDSD 0xffff /* bits 15..00: RDS Block D Data (Si4701 only) */ |
| 266 | |
| 267 | |
| 268 | |
| 269 | /************************************************************************** |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 270 | * USB HID Reports |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 271 | **************************************************************************/ |
| 272 | |
| 273 | /* Reports 1-16 give direct read/write access to the 16 Si470x registers */ |
| 274 | /* with the (REPORT_ID - 1) corresponding to the register address across USB */ |
| 275 | /* endpoint 0 using GET_REPORT and SET_REPORT */ |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 276 | #define REGISTER_REPORT_SIZE (RADIO_REGISTER_SIZE + 1) |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 277 | #define REGISTER_REPORT(reg) ((reg) + 1) |
| 278 | |
| 279 | /* Report 17 gives direct read/write access to the entire Si470x register */ |
| 280 | /* map across endpoint 0 using GET_REPORT and SET_REPORT */ |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 281 | #define ENTIRE_REPORT_SIZE (RADIO_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 282 | #define ENTIRE_REPORT 17 |
| 283 | |
| 284 | /* Report 18 is used to send the lowest 6 Si470x registers up the HID */ |
| 285 | /* interrupt endpoint 1 to Windows every 20 milliseconds for status */ |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 286 | #define RDS_REPORT_SIZE (RDS_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 287 | #define RDS_REPORT 18 |
| 288 | |
| 289 | /* Report 19: LED state */ |
| 290 | #define LED_REPORT_SIZE 3 |
| 291 | #define LED_REPORT 19 |
| 292 | |
| 293 | /* Report 19: stream */ |
| 294 | #define STREAM_REPORT_SIZE 3 |
| 295 | #define STREAM_REPORT 19 |
| 296 | |
| 297 | /* Report 20: scratch */ |
| 298 | #define SCRATCH_PAGE_SIZE 63 |
| 299 | #define SCRATCH_REPORT_SIZE (SCRATCH_PAGE_SIZE + 1) |
| 300 | #define SCRATCH_REPORT 20 |
| 301 | |
| 302 | /* Reports 19-22: flash upgrade of the C8051F321 */ |
| 303 | #define WRITE_REPORT 19 |
| 304 | #define FLASH_REPORT 20 |
| 305 | #define CRC_REPORT 21 |
| 306 | #define RESPONSE_REPORT 22 |
| 307 | |
| 308 | /* Report 23: currently unused, but can accept 60 byte reports on the HID */ |
| 309 | /* interrupt out endpoint 2 every 1 millisecond */ |
| 310 | #define UNUSED_REPORT 23 |
| 311 | |
| 312 | |
| 313 | |
| 314 | /************************************************************************** |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 315 | * Software/Hardware Versions |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 316 | **************************************************************************/ |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 317 | #define RADIO_SW_VERSION_NOT_BOOTLOADABLE 6 |
| 318 | #define RADIO_SW_VERSION 7 |
| 319 | #define RADIO_SW_VERSION_CURRENT 15 |
| 320 | #define RADIO_HW_VERSION 1 |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 321 | |
| 322 | #define SCRATCH_PAGE_SW_VERSION 1 |
| 323 | #define SCRATCH_PAGE_HW_VERSION 2 |
| 324 | |
| 325 | |
| 326 | |
| 327 | /************************************************************************** |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 328 | * LED State Definitions |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 329 | **************************************************************************/ |
| 330 | #define LED_COMMAND 0x35 |
| 331 | |
| 332 | #define NO_CHANGE_LED 0x00 |
| 333 | #define ALL_COLOR_LED 0x01 /* streaming state */ |
| 334 | #define BLINK_GREEN_LED 0x02 /* connect state */ |
| 335 | #define BLINK_RED_LED 0x04 |
| 336 | #define BLINK_ORANGE_LED 0x10 /* disconnect state */ |
| 337 | #define SOLID_GREEN_LED 0x20 /* tuning/seeking state */ |
| 338 | #define SOLID_RED_LED 0x40 /* bootload state */ |
| 339 | #define SOLID_ORANGE_LED 0x80 |
| 340 | |
| 341 | |
| 342 | |
| 343 | /************************************************************************** |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 344 | * Stream State Definitions |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 345 | **************************************************************************/ |
| 346 | #define STREAM_COMMAND 0x36 |
| 347 | #define STREAM_VIDPID 0x00 |
| 348 | #define STREAM_AUDIO 0xff |
| 349 | |
| 350 | |
| 351 | |
| 352 | /************************************************************************** |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 353 | * Bootloader / Flash Commands |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 354 | **************************************************************************/ |
| 355 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 356 | /* unique id sent to bootloader and required to put into a bootload state */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 357 | #define UNIQUE_BL_ID 0x34 |
| 358 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 359 | /* mask for the flash data */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 360 | #define FLASH_DATA_MASK 0x55 |
| 361 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 362 | /* bootloader commands */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 363 | #define GET_SW_VERSION_COMMAND 0x00 |
| 364 | #define SET_PAGE_COMMAND 0x01 |
| 365 | #define ERASE_PAGE_COMMAND 0x02 |
| 366 | #define WRITE_PAGE_COMMAND 0x03 |
| 367 | #define CRC_ON_PAGE_COMMAND 0x04 |
| 368 | #define READ_FLASH_BYTE_COMMAND 0x05 |
| 369 | #define RESET_DEVICE_COMMAND 0x06 |
| 370 | #define GET_HW_VERSION_COMMAND 0x07 |
| 371 | #define BLANK 0xff |
| 372 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 373 | /* bootloader command responses */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 374 | #define COMMAND_OK 0x01 |
| 375 | #define COMMAND_FAILED 0x02 |
| 376 | #define COMMAND_PENDING 0x03 |
| 377 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 378 | /* buffer sizes */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 379 | #define COMMAND_BUFFER_SIZE 4 |
| 380 | #define RESPONSE_BUFFER_SIZE 2 |
| 381 | #define FLASH_BUFFER_SIZE 64 |
| 382 | #define CRC_BUFFER_SIZE 3 |
| 383 | |
| 384 | |
| 385 | |
| 386 | /************************************************************************** |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 387 | * General Driver Definitions |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 388 | **************************************************************************/ |
| 389 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 390 | /* |
| 391 | * si470x_device - private data |
| 392 | */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 393 | struct si470x_device { |
| 394 | /* reference to USB and video device */ |
| 395 | struct usb_device *usbdev; |
| 396 | struct video_device *videodev; |
| 397 | |
| 398 | /* are these really necessary ? */ |
| 399 | int users; |
| 400 | |
| 401 | /* report buffer (maximum 64 bytes) */ |
| 402 | unsigned char buf[64]; |
| 403 | |
| 404 | /* Silabs internal registers (0..15) */ |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 405 | unsigned short registers[RADIO_REGISTER_NUM]; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 406 | |
| 407 | /* RDS receive buffer */ |
| 408 | struct work_struct work; |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 409 | wait_queue_head_t read_queue; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 410 | struct timer_list timer; |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 411 | spinlock_t lock; /* buffer locking */ |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 412 | unsigned char *buffer; /* size is always multiple of three */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 413 | unsigned int buf_size; |
| 414 | unsigned int rd_index; |
| 415 | unsigned int wr_index; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 416 | }; |
| 417 | |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 418 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 419 | /* |
| 420 | * The frequency is set in units of 62.5 Hz when using V4L2_TUNER_CAP_LOW, |
| 421 | * 62.5 kHz otherwise. |
| 422 | * The tuner is able to have a channel spacing of 50, 100 or 200 kHz. |
| 423 | * tuner->capability is therefore set to V4L2_TUNER_CAP_LOW |
| 424 | * The FREQ_MUL is then: 1 MHz / 62.5 Hz = 16000 |
| 425 | */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 426 | #define FREQ_MUL (1000000 / 62.5) |
| 427 | |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 428 | |
| 429 | |
| 430 | /************************************************************************** |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 431 | * General Driver Functions |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 432 | **************************************************************************/ |
| 433 | |
| 434 | /* |
| 435 | * si470x_get_report - receive a HID report |
| 436 | */ |
| 437 | static int si470x_get_report(struct si470x_device *radio, int size) |
| 438 | { |
| 439 | return usb_control_msg(radio->usbdev, |
| 440 | usb_rcvctrlpipe(radio->usbdev, 0), |
| 441 | HID_REQ_GET_REPORT, |
| 442 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, |
| 443 | radio->buf[0], 2, |
| 444 | radio->buf, size, usb_timeout); |
| 445 | } |
| 446 | |
| 447 | |
| 448 | /* |
| 449 | * si470x_set_report - send a HID report |
| 450 | */ |
| 451 | static int si470x_set_report(struct si470x_device *radio, int size) |
| 452 | { |
| 453 | return usb_control_msg(radio->usbdev, |
| 454 | usb_sndctrlpipe(radio->usbdev, 0), |
| 455 | HID_REQ_SET_REPORT, |
| 456 | USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT, |
| 457 | radio->buf[0], 2, |
| 458 | radio->buf, size, usb_timeout); |
| 459 | } |
| 460 | |
| 461 | |
| 462 | /* |
| 463 | * si470x_get_register - read register |
| 464 | */ |
| 465 | static int si470x_get_register(struct si470x_device *radio, int regnr) |
| 466 | { |
| 467 | int retval; |
| 468 | |
| 469 | radio->buf[0] = REGISTER_REPORT(regnr); |
| 470 | |
| 471 | retval = si470x_get_report(radio, REGISTER_REPORT_SIZE); |
| 472 | if (retval >= 0) |
| 473 | radio->registers[regnr] = (radio->buf[1] << 8) | radio->buf[2]; |
| 474 | |
| 475 | return (retval < 0) ? -EINVAL : 0; |
| 476 | } |
| 477 | |
| 478 | |
| 479 | /* |
| 480 | * si470x_set_register - write register |
| 481 | */ |
| 482 | static int si470x_set_register(struct si470x_device *radio, int regnr) |
| 483 | { |
| 484 | int retval; |
| 485 | |
| 486 | radio->buf[0] = REGISTER_REPORT(regnr); |
| 487 | radio->buf[1] = (radio->registers[regnr] & 0xff00) >> 8; |
| 488 | radio->buf[2] = (radio->registers[regnr] & 0x00ff); |
| 489 | |
| 490 | retval = si470x_set_report(radio, REGISTER_REPORT_SIZE); |
| 491 | |
| 492 | return (retval < 0) ? -EINVAL : 0; |
| 493 | } |
| 494 | |
| 495 | |
| 496 | /* |
| 497 | * si470x_get_all_registers - read entire registers |
| 498 | */ |
| 499 | static int si470x_get_all_registers(struct si470x_device *radio) |
| 500 | { |
| 501 | int retval; |
| 502 | int regnr; |
| 503 | |
| 504 | radio->buf[0] = ENTIRE_REPORT; |
| 505 | |
| 506 | retval = si470x_get_report(radio, ENTIRE_REPORT_SIZE); |
| 507 | |
| 508 | if (retval >= 0) |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 509 | for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++) |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 510 | radio->registers[regnr] = |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 511 | (radio->buf[regnr * RADIO_REGISTER_SIZE + 1] << 8) | |
| 512 | radio->buf[regnr * RADIO_REGISTER_SIZE + 2]; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 513 | |
| 514 | return (retval < 0) ? -EINVAL : 0; |
| 515 | } |
| 516 | |
| 517 | |
| 518 | /* |
| 519 | * si470x_get_rds_registers - read rds registers |
| 520 | */ |
| 521 | static int si470x_get_rds_registers(struct si470x_device *radio) |
| 522 | { |
| 523 | int retval; |
| 524 | int regnr; |
| 525 | int size; |
| 526 | |
| 527 | radio->buf[0] = RDS_REPORT; |
| 528 | |
| 529 | retval = usb_interrupt_msg(radio->usbdev, |
| 530 | usb_rcvctrlpipe(radio->usbdev, 1), |
| 531 | radio->buf, RDS_REPORT_SIZE, &size, usb_timeout); |
| 532 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 533 | if (retval >= 0) |
| 534 | for (regnr = 0; regnr < RDS_REGISTER_NUM; regnr++) |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 535 | radio->registers[STATUSRSSI + regnr] = |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 536 | (radio->buf[regnr * RADIO_REGISTER_SIZE + 1] << 8) | |
| 537 | radio->buf[regnr * RADIO_REGISTER_SIZE + 2]; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 538 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 539 | return (retval < 0) ? -EINVAL : 0; |
| 540 | } |
| 541 | |
| 542 | |
| 543 | /* |
| 544 | * si470x_set_chan - set the channel |
| 545 | */ |
| 546 | static int si470x_set_chan(struct si470x_device *radio, int chan) |
| 547 | { |
| 548 | int retval, i; |
| 549 | |
| 550 | /* start tuning */ |
| 551 | radio->registers[CHANNEL] &= ~CHANNEL_CHAN; |
| 552 | radio->registers[CHANNEL] |= CHANNEL_TUNE | chan; |
| 553 | retval = si470x_set_register(radio, CHANNEL); |
| 554 | if (retval < 0) |
| 555 | return retval; |
| 556 | |
| 557 | /* wait till seek operation has completed */ |
| 558 | i = 0; |
| 559 | do { |
| 560 | retval = si470x_get_register(radio, STATUSRSSI); |
| 561 | if (retval < 0) |
| 562 | return retval; |
| 563 | } while ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) && |
| 564 | (++i < seek_retries)); |
| 565 | if (i >= seek_retries) |
| 566 | printk(KERN_WARNING DRIVER_NAME |
| 567 | ": seek does not finish after %d tries\n", i); |
| 568 | |
| 569 | /* stop tuning */ |
| 570 | radio->registers[CHANNEL] &= ~CHANNEL_TUNE; |
| 571 | return si470x_set_register(radio, CHANNEL); |
| 572 | } |
| 573 | |
| 574 | |
| 575 | /* |
| 576 | * si470x_get_freq - get the frequency |
| 577 | */ |
| 578 | static int si470x_get_freq(struct si470x_device *radio) |
| 579 | { |
| 580 | int spacing, band_bottom, chan, freq; |
| 581 | int retval; |
| 582 | |
| 583 | /* Spacing (kHz) */ |
| 584 | switch (space) { |
| 585 | /* 0: 200 kHz (USA, Australia) */ |
| 586 | case 0 : spacing = 0.200 * FREQ_MUL; break; |
| 587 | /* 1: 100 kHz (Europe, Japan) */ |
| 588 | case 1 : spacing = 0.100 * FREQ_MUL; break; |
| 589 | /* 2: 50 kHz */ |
| 590 | default: spacing = 0.050 * FREQ_MUL; break; |
| 591 | }; |
| 592 | |
| 593 | /* Bottom of Band (MHz) */ |
| 594 | switch (band) { |
| 595 | /* 0: 87.5 - 108 MHz (USA, Europe) */ |
| 596 | case 0 : band_bottom = 87.5 * FREQ_MUL; break; |
| 597 | /* 1: 76 - 108 MHz (Japan wide band) */ |
| 598 | default: band_bottom = 76 * FREQ_MUL; break; |
| 599 | /* 2: 76 - 90 MHz (Japan) */ |
| 600 | case 2 : band_bottom = 76 * FREQ_MUL; break; |
| 601 | }; |
| 602 | |
| 603 | /* read channel */ |
| 604 | retval = si470x_get_register(radio, READCHAN); |
| 605 | if (retval < 0) |
| 606 | return retval; |
| 607 | chan = radio->registers[READCHAN] & READCHAN_READCHAN; |
| 608 | |
| 609 | /* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */ |
| 610 | freq = chan * spacing + band_bottom; |
| 611 | |
| 612 | return freq; |
| 613 | } |
| 614 | |
| 615 | |
| 616 | /* |
| 617 | * si470x_set_freq - set the frequency |
| 618 | */ |
| 619 | static int si470x_set_freq(struct si470x_device *radio, int freq) |
| 620 | { |
| 621 | int spacing, band_bottom, chan; |
| 622 | |
| 623 | /* Spacing (kHz) */ |
| 624 | switch (space) { |
| 625 | /* 0: 200 kHz (USA, Australia) */ |
| 626 | case 0 : spacing = 0.200 * FREQ_MUL; break; |
| 627 | /* 1: 100 kHz (Europe, Japan) */ |
| 628 | case 1 : spacing = 0.100 * FREQ_MUL; break; |
| 629 | /* 2: 50 kHz */ |
| 630 | default: spacing = 0.050 * FREQ_MUL; break; |
| 631 | }; |
| 632 | |
| 633 | /* Bottom of Band (MHz) */ |
| 634 | switch (band) { |
| 635 | /* 0: 87.5 - 108 MHz (USA, Europe) */ |
| 636 | case 0 : band_bottom = 87.5 * FREQ_MUL; break; |
| 637 | /* 1: 76 - 108 MHz (Japan wide band) */ |
| 638 | default: band_bottom = 76 * FREQ_MUL; break; |
| 639 | /* 2: 76 - 90 MHz (Japan) */ |
| 640 | case 2 : band_bottom = 76 * FREQ_MUL; break; |
| 641 | }; |
| 642 | |
| 643 | /* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */ |
| 644 | chan = (freq - band_bottom) / spacing; |
| 645 | |
| 646 | return si470x_set_chan(radio, chan); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 647 | } |
| 648 | |
| 649 | |
| 650 | /* |
| 651 | * si470x_start - switch on radio |
| 652 | */ |
| 653 | static int si470x_start(struct si470x_device *radio) |
| 654 | { |
| 655 | int retval; |
| 656 | |
| 657 | /* powercfg */ |
| 658 | radio->registers[POWERCFG] = |
| 659 | POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM; |
| 660 | retval = si470x_set_register(radio, POWERCFG); |
| 661 | if (retval < 0) |
| 662 | return retval; |
| 663 | |
| 664 | /* sysconfig 1 */ |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 665 | radio->registers[SYSCONFIG1] = SYSCONFIG1_DE; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 666 | retval = si470x_set_register(radio, SYSCONFIG1); |
| 667 | if (retval < 0) |
| 668 | return retval; |
| 669 | |
| 670 | /* sysconfig 2 */ |
| 671 | radio->registers[SYSCONFIG2] = |
| 672 | (0x3f << 8) | /* SEEKTH */ |
| 673 | (band << 6) | /* BAND */ |
| 674 | (space << 4) | /* SPACE */ |
| 675 | 15; /* VOLUME (max) */ |
| 676 | retval = si470x_set_register(radio, SYSCONFIG2); |
| 677 | if (retval < 0) |
| 678 | return retval; |
| 679 | |
| 680 | /* reset last channel */ |
| 681 | return si470x_set_chan(radio, |
| 682 | radio->registers[CHANNEL] & CHANNEL_CHAN); |
| 683 | } |
| 684 | |
| 685 | |
| 686 | /* |
| 687 | * si470x_stop - switch off radio |
| 688 | */ |
| 689 | static int si470x_stop(struct si470x_device *radio) |
| 690 | { |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 691 | int retval; |
| 692 | |
| 693 | /* sysconfig 1 */ |
| 694 | radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; |
| 695 | retval = si470x_set_register(radio, SYSCONFIG1); |
| 696 | if (retval < 0) |
| 697 | return retval; |
| 698 | |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 699 | /* powercfg */ |
| 700 | radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; |
| 701 | /* POWERCFG_ENABLE has to automatically go low */ |
| 702 | radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; |
| 703 | return si470x_set_register(radio, POWERCFG); |
| 704 | } |
| 705 | |
| 706 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 707 | /* |
| 708 | * si470x_rds_on - switch on rds reception |
| 709 | */ |
| 710 | static int si470x_rds_on(struct si470x_device *radio) |
| 711 | { |
| 712 | /* sysconfig 1 */ |
| 713 | radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS; |
| 714 | return si470x_set_register(radio, SYSCONFIG1); |
| 715 | } |
| 716 | |
| 717 | |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 718 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 719 | /************************************************************************** |
| 720 | * RDS Driver Functions |
| 721 | **************************************************************************/ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 722 | |
| 723 | /* |
| 724 | * si470x_rds - rds processing function |
| 725 | */ |
| 726 | static void si470x_rds(struct si470x_device *radio) |
| 727 | { |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 728 | unsigned char tmpbuf[3]; |
| 729 | unsigned char blocknum; |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 730 | unsigned char bler; /* rds block errors */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 731 | unsigned short rds; |
| 732 | unsigned int i; |
| 733 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 734 | /* get rds blocks */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 735 | if (si470x_get_rds_registers(radio) < 0) |
| 736 | return; |
| 737 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSR) == 0) { |
| 738 | /* No RDS group ready */ |
| 739 | return; |
| 740 | } |
| 741 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSS) == 0) { |
| 742 | /* RDS decoder not synchronized */ |
| 743 | return; |
| 744 | } |
| 745 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 746 | /* copy four RDS blocks to internal buffer */ |
| 747 | if (spin_trylock(&radio->lock)) { |
| 748 | /* process each rds block */ |
| 749 | for (blocknum = 0; blocknum < 4; blocknum++) { |
| 750 | switch (blocknum) { |
| 751 | default: |
| 752 | bler = (radio->registers[STATUSRSSI] & |
| 753 | STATUSRSSI_BLERA) >> 9; |
| 754 | rds = radio->registers[RDSA]; |
| 755 | break; |
| 756 | case 1: |
| 757 | bler = (radio->registers[READCHAN] & |
| 758 | READCHAN_BLERB) >> 14; |
| 759 | rds = radio->registers[RDSB]; |
| 760 | break; |
| 761 | case 2: |
| 762 | bler = (radio->registers[READCHAN] & |
| 763 | READCHAN_BLERC) >> 12; |
| 764 | rds = radio->registers[RDSC]; |
| 765 | break; |
| 766 | case 3: |
| 767 | bler = (radio->registers[READCHAN] & |
| 768 | READCHAN_BLERD) >> 10; |
| 769 | rds = radio->registers[RDSD]; |
| 770 | break; |
| 771 | }; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 772 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 773 | /* Fill the V4L2 RDS buffer */ |
| 774 | tmpbuf[0] = rds & 0x00ff; /* LSB */ |
| 775 | tmpbuf[1] = (rds & 0xff00) >> 8;/* MSB */ |
| 776 | tmpbuf[2] = blocknum; /* offset name */ |
| 777 | tmpbuf[2] |= blocknum << 3; /* received offset */ |
| 778 | if (bler > max_rds_errors) |
| 779 | tmpbuf[2] |= 0x80; /* uncorrectable errors */ |
| 780 | else if (bler > 0) |
| 781 | tmpbuf[2] |= 0x40; /* corrected error(s) */ |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 782 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 783 | /* copy RDS block to internal buffer */ |
| 784 | for (i = 0; i < 3; i++) { |
| 785 | radio->buffer[radio->wr_index] = tmpbuf[i]; |
| 786 | radio->wr_index++; |
| 787 | } |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 788 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 789 | /* wrap write pointer */ |
| 790 | if (radio->wr_index >= radio->buf_size) |
| 791 | radio->wr_index = 0; |
| 792 | |
| 793 | /* check for overflow */ |
| 794 | if (radio->wr_index == radio->rd_index) { |
| 795 | /* increment and wrap read pointer */ |
| 796 | radio->rd_index += 3; |
| 797 | if (radio->rd_index >= radio->buf_size) |
| 798 | radio->rd_index = 0; |
| 799 | } |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 800 | } |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 801 | spin_unlock(&radio->lock); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 802 | } |
| 803 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 804 | /* wake up read queue */ |
| 805 | if (radio->wr_index != radio->rd_index) |
| 806 | wake_up_interruptible(&radio->read_queue); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 807 | } |
| 808 | |
| 809 | |
| 810 | /* |
| 811 | * si470x_timer - rds timer function |
| 812 | */ |
| 813 | static void si470x_timer(unsigned long data) |
| 814 | { |
| 815 | struct si470x_device *radio = (struct si470x_device *) data; |
| 816 | |
| 817 | schedule_work(&radio->work); |
| 818 | } |
| 819 | |
| 820 | |
| 821 | /* |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 822 | * si470x_work - rds work function |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 823 | */ |
| 824 | static void si470x_work(struct work_struct *work) |
| 825 | { |
| 826 | struct si470x_device *radio = container_of(work, struct si470x_device, |
| 827 | work); |
| 828 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 829 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 830 | return; |
| 831 | |
| 832 | si470x_rds(radio); |
| 833 | mod_timer(&radio->timer, jiffies + msecs_to_jiffies(rds_poll_time)); |
| 834 | } |
| 835 | |
| 836 | |
| 837 | |
| 838 | /************************************************************************** |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 839 | * File Operations Interface |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 840 | **************************************************************************/ |
| 841 | |
| 842 | /* |
| 843 | * si470x_fops_read - read RDS data |
| 844 | */ |
| 845 | static ssize_t si470x_fops_read(struct file *file, char __user *buf, |
| 846 | size_t count, loff_t *ppos) |
| 847 | { |
| 848 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 849 | int retval = 0; |
| 850 | unsigned int block_count = 0; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 851 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 852 | /* switch on rds reception */ |
| 853 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) { |
| 854 | si470x_rds_on(radio); |
| 855 | schedule_work(&radio->work); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 856 | } |
| 857 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 858 | /* block if no new data available */ |
| 859 | while (radio->wr_index == radio->rd_index) { |
| 860 | if (file->f_flags & O_NONBLOCK) |
| 861 | return -EWOULDBLOCK; |
| 862 | interruptible_sleep_on(&radio->read_queue); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 863 | } |
| 864 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 865 | /* calculate block count from byte count */ |
| 866 | count /= 3; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 867 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 868 | /* copy RDS block out of internal buffer and to user buffer */ |
| 869 | if (spin_trylock(&radio->lock)) { |
| 870 | while (block_count < count) { |
| 871 | if (radio->rd_index == radio->wr_index) |
| 872 | break; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 873 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 874 | /* always transfer rds complete blocks */ |
| 875 | if (copy_to_user(buf, |
| 876 | &radio->buffer[radio->rd_index], 3)) |
| 877 | /* retval = -EFAULT; */ |
| 878 | break; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 879 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 880 | /* increment and wrap read pointer */ |
| 881 | radio->rd_index += 3; |
| 882 | if (radio->rd_index >= radio->buf_size) |
| 883 | radio->rd_index = 0; |
| 884 | |
| 885 | /* increment counters */ |
| 886 | block_count++; |
| 887 | buf += 3; |
| 888 | retval += 3; |
| 889 | } |
| 890 | |
| 891 | spin_unlock(&radio->lock); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 892 | } |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 893 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 894 | return retval; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 895 | } |
| 896 | |
| 897 | |
| 898 | /* |
| 899 | * si470x_fops_poll - poll RDS data |
| 900 | */ |
| 901 | static unsigned int si470x_fops_poll(struct file *file, |
| 902 | struct poll_table_struct *pts) |
| 903 | { |
| 904 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 905 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 906 | /* switch on rds reception */ |
| 907 | if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) { |
| 908 | si470x_rds_on(radio); |
| 909 | schedule_work(&radio->work); |
| 910 | } |
| 911 | |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 912 | poll_wait(file, &radio->read_queue, pts); |
| 913 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 914 | if (radio->rd_index != radio->wr_index) |
| 915 | return POLLIN | POLLRDNORM; |
| 916 | |
| 917 | return 0; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 918 | } |
| 919 | |
| 920 | |
| 921 | /* |
| 922 | * si470x_fops_open - file open |
| 923 | */ |
| 924 | static int si470x_fops_open(struct inode *inode, struct file *file) |
| 925 | { |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 926 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
| 927 | |
| 928 | radio->users++; |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 929 | if (radio->users == 1) |
| 930 | return si470x_start(radio); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 931 | |
| 932 | return 0; |
| 933 | } |
| 934 | |
| 935 | |
| 936 | /* |
| 937 | * si470x_fops_release - file release |
| 938 | */ |
| 939 | static int si470x_fops_release(struct inode *inode, struct file *file) |
| 940 | { |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 941 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
| 942 | |
| 943 | if (!radio) |
| 944 | return -ENODEV; |
| 945 | |
| 946 | radio->users--; |
| 947 | if (radio->users == 0) { |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 948 | /* stop rds reception */ |
| 949 | del_timer_sync(&radio->timer); |
| 950 | flush_scheduled_work(); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 951 | |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 952 | /* cancel read processes */ |
| 953 | wake_up_interruptible(&radio->read_queue); |
| 954 | |
| 955 | return si470x_stop(radio); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 956 | } |
| 957 | |
| 958 | return 0; |
| 959 | } |
| 960 | |
| 961 | |
| 962 | /* |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 963 | * si470x_fops - file operations interface |
| 964 | */ |
| 965 | static const struct file_operations si470x_fops = { |
| 966 | .owner = THIS_MODULE, |
| 967 | .llseek = no_llseek, |
| 968 | .read = si470x_fops_read, |
| 969 | .poll = si470x_fops_poll, |
| 970 | .ioctl = video_ioctl2, |
| 971 | .compat_ioctl = v4l_compat_ioctl32, |
| 972 | .open = si470x_fops_open, |
| 973 | .release = si470x_fops_release, |
| 974 | }; |
| 975 | |
| 976 | |
| 977 | |
| 978 | /************************************************************************** |
| 979 | * Video4Linux Interface |
| 980 | **************************************************************************/ |
| 981 | |
| 982 | /* |
| 983 | * si470x_v4l2_queryctrl - query control |
| 984 | */ |
| 985 | static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = { |
| 986 | /* HINT: the disabled controls are only here to satify kradio and such apps */ |
| 987 | { |
| 988 | .id = V4L2_CID_AUDIO_VOLUME, |
| 989 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 990 | .name = "Volume", |
| 991 | .minimum = 0, |
| 992 | .maximum = 15, |
| 993 | .step = 1, |
| 994 | .default_value = 15, |
| 995 | }, |
| 996 | { |
| 997 | .id = V4L2_CID_AUDIO_BALANCE, |
| 998 | .flags = V4L2_CTRL_FLAG_DISABLED, |
| 999 | }, |
| 1000 | { |
| 1001 | .id = V4L2_CID_AUDIO_BASS, |
| 1002 | .flags = V4L2_CTRL_FLAG_DISABLED, |
| 1003 | }, |
| 1004 | { |
| 1005 | .id = V4L2_CID_AUDIO_TREBLE, |
| 1006 | .flags = V4L2_CTRL_FLAG_DISABLED, |
| 1007 | }, |
| 1008 | { |
| 1009 | .id = V4L2_CID_AUDIO_MUTE, |
| 1010 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 1011 | .name = "Mute", |
| 1012 | .minimum = 0, |
| 1013 | .maximum = 1, |
| 1014 | .step = 1, |
| 1015 | .default_value = 1, |
| 1016 | }, |
| 1017 | { |
| 1018 | .id = V4L2_CID_AUDIO_LOUDNESS, |
| 1019 | .flags = V4L2_CTRL_FLAG_DISABLED, |
| 1020 | }, |
| 1021 | }; |
| 1022 | |
| 1023 | |
| 1024 | /* |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 1025 | * si470x_vidioc_querycap - query device capabilities |
| 1026 | */ |
| 1027 | static int si470x_vidioc_querycap(struct file *file, void *priv, |
| 1028 | struct v4l2_capability *capability) |
| 1029 | { |
| 1030 | strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver)); |
| 1031 | strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); |
| 1032 | sprintf(capability->bus_info, "USB"); |
| 1033 | capability->version = DRIVER_VERSION; |
| 1034 | capability->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO; |
| 1035 | |
| 1036 | return 0; |
| 1037 | } |
| 1038 | |
| 1039 | |
| 1040 | /* |
| 1041 | * si470x_vidioc_g_input - get input |
| 1042 | */ |
| 1043 | static int si470x_vidioc_g_input(struct file *filp, void *priv, |
| 1044 | unsigned int *i) |
| 1045 | { |
| 1046 | *i = 0; |
| 1047 | |
| 1048 | return 0; |
| 1049 | } |
| 1050 | |
| 1051 | |
| 1052 | /* |
| 1053 | * si470x_vidioc_s_input - set input |
| 1054 | */ |
| 1055 | static int si470x_vidioc_s_input(struct file *filp, void *priv, unsigned int i) |
| 1056 | { |
| 1057 | if (i != 0) |
| 1058 | return -EINVAL; |
| 1059 | |
| 1060 | return 0; |
| 1061 | } |
| 1062 | |
| 1063 | |
| 1064 | /* |
| 1065 | * si470x_vidioc_queryctrl - enumerate control items |
| 1066 | */ |
| 1067 | static int si470x_vidioc_queryctrl(struct file *file, void *priv, |
| 1068 | struct v4l2_queryctrl *qc) |
| 1069 | { |
| 1070 | int i; |
| 1071 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1072 | for (i = 0; i < ARRAY_SIZE(si470x_v4l2_queryctrl); i++) { |
| 1073 | if (qc->id && qc->id == si470x_v4l2_queryctrl[i].id) { |
| 1074 | memcpy(qc, &(si470x_v4l2_queryctrl[i]), sizeof(*qc)); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 1075 | return 0; |
| 1076 | } |
| 1077 | } |
| 1078 | |
| 1079 | return -EINVAL; |
| 1080 | } |
| 1081 | |
| 1082 | |
| 1083 | /* |
| 1084 | * si470x_vidioc_g_ctrl - get the value of a control |
| 1085 | */ |
| 1086 | static int si470x_vidioc_g_ctrl(struct file *file, void *priv, |
| 1087 | struct v4l2_control *ctrl) |
| 1088 | { |
| 1089 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
| 1090 | |
| 1091 | switch (ctrl->id) { |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1092 | case V4L2_CID_AUDIO_VOLUME: |
| 1093 | ctrl->value = radio->registers[SYSCONFIG2] & |
| 1094 | SYSCONFIG2_VOLUME; |
| 1095 | break; |
| 1096 | case V4L2_CID_AUDIO_MUTE: |
| 1097 | ctrl->value = ((radio->registers[POWERCFG] & |
| 1098 | POWERCFG_DMUTE) == 0) ? 1 : 0; |
| 1099 | break; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 1100 | } |
| 1101 | |
| 1102 | return 0; |
| 1103 | } |
| 1104 | |
| 1105 | |
| 1106 | /* |
| 1107 | * si470x_vidioc_s_ctrl - set the value of a control |
| 1108 | */ |
| 1109 | static int si470x_vidioc_s_ctrl(struct file *file, void *priv, |
| 1110 | struct v4l2_control *ctrl) |
| 1111 | { |
| 1112 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
| 1113 | |
| 1114 | switch (ctrl->id) { |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1115 | case V4L2_CID_AUDIO_VOLUME: |
| 1116 | radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; |
| 1117 | radio->registers[SYSCONFIG2] |= ctrl->value; |
| 1118 | return si470x_set_register(radio, SYSCONFIG2); |
| 1119 | case V4L2_CID_AUDIO_MUTE: |
| 1120 | if (ctrl->value == 1) |
| 1121 | radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; |
| 1122 | else |
| 1123 | radio->registers[POWERCFG] |= POWERCFG_DMUTE; |
| 1124 | return si470x_set_register(radio, POWERCFG); |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 1125 | } |
| 1126 | |
| 1127 | return -EINVAL; |
| 1128 | } |
| 1129 | |
| 1130 | |
| 1131 | /* |
| 1132 | * si470x_vidioc_g_audio - get audio attributes |
| 1133 | */ |
| 1134 | static int si470x_vidioc_g_audio(struct file *file, void *priv, |
| 1135 | struct v4l2_audio *audio) |
| 1136 | { |
| 1137 | if (audio->index > 1) |
| 1138 | return -EINVAL; |
| 1139 | |
| 1140 | strcpy(audio->name, "Radio"); |
| 1141 | audio->capability = V4L2_AUDCAP_STEREO; |
| 1142 | |
| 1143 | return 0; |
| 1144 | } |
| 1145 | |
| 1146 | |
| 1147 | /* |
| 1148 | * si470x_vidioc_s_audio - set audio attributes |
| 1149 | */ |
| 1150 | static int si470x_vidioc_s_audio(struct file *file, void *priv, |
| 1151 | struct v4l2_audio *audio) |
| 1152 | { |
| 1153 | if (audio->index != 0) |
| 1154 | return -EINVAL; |
| 1155 | |
| 1156 | return 0; |
| 1157 | } |
| 1158 | |
| 1159 | |
| 1160 | /* |
| 1161 | * si470x_vidioc_g_tuner - get tuner attributes |
| 1162 | */ |
| 1163 | static int si470x_vidioc_g_tuner(struct file *file, void *priv, |
| 1164 | struct v4l2_tuner *tuner) |
| 1165 | { |
| 1166 | int retval; |
| 1167 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
| 1168 | |
| 1169 | if (tuner->index > 0) |
| 1170 | return -EINVAL; |
| 1171 | |
| 1172 | /* read status rssi */ |
| 1173 | retval = si470x_get_register(radio, STATUSRSSI); |
| 1174 | if (retval < 0) |
| 1175 | return retval; |
| 1176 | |
| 1177 | strcpy(tuner->name, "FM"); |
| 1178 | tuner->type = V4L2_TUNER_RADIO; |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1179 | switch (band) { |
| 1180 | /* 0: 87.5 - 108 MHz (USA, Europe, default) */ |
| 1181 | default: |
| 1182 | tuner->rangelow = 87.5 * FREQ_MUL; |
| 1183 | tuner->rangehigh = 108 * FREQ_MUL; |
| 1184 | break; |
| 1185 | /* 1: 76 - 108 MHz (Japan wide band) */ |
| 1186 | case 1 : |
| 1187 | tuner->rangelow = 76 * FREQ_MUL; |
| 1188 | tuner->rangehigh = 108 * FREQ_MUL; |
| 1189 | break; |
| 1190 | /* 2: 76 - 90 MHz (Japan) */ |
| 1191 | case 2 : |
| 1192 | tuner->rangelow = 76 * FREQ_MUL; |
| 1193 | tuner->rangehigh = 90 * FREQ_MUL; |
| 1194 | break; |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 1195 | }; |
| 1196 | tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; |
| 1197 | tuner->capability = V4L2_TUNER_CAP_LOW; |
| 1198 | |
| 1199 | /* Stereo indicator == Stereo (instead of Mono) */ |
| 1200 | if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 1) |
| 1201 | tuner->audmode = V4L2_TUNER_MODE_STEREO; |
| 1202 | else |
| 1203 | tuner->audmode = V4L2_TUNER_MODE_MONO; |
| 1204 | |
| 1205 | /* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */ |
| 1206 | tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI) |
| 1207 | * 0x0101; |
| 1208 | |
| 1209 | /* automatic frequency control: -1: freq to low, 1 freq to high */ |
| 1210 | tuner->afc = 0; |
| 1211 | |
| 1212 | return 0; |
| 1213 | } |
| 1214 | |
| 1215 | |
| 1216 | /* |
| 1217 | * si470x_vidioc_s_tuner - set tuner attributes |
| 1218 | */ |
| 1219 | static int si470x_vidioc_s_tuner(struct file *file, void *priv, |
| 1220 | struct v4l2_tuner *tuner) |
| 1221 | { |
| 1222 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
| 1223 | |
| 1224 | if (tuner->index > 0) |
| 1225 | return -EINVAL; |
| 1226 | |
| 1227 | if (tuner->audmode == V4L2_TUNER_MODE_MONO) |
| 1228 | radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */ |
| 1229 | else |
| 1230 | radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */ |
| 1231 | |
| 1232 | return si470x_set_register(radio, POWERCFG); |
| 1233 | } |
| 1234 | |
| 1235 | |
| 1236 | /* |
| 1237 | * si470x_vidioc_g_frequency - get tuner or modulator radio frequency |
| 1238 | */ |
| 1239 | static int si470x_vidioc_g_frequency(struct file *file, void *priv, |
| 1240 | struct v4l2_frequency *freq) |
| 1241 | { |
| 1242 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
| 1243 | |
| 1244 | freq->type = V4L2_TUNER_RADIO; |
| 1245 | freq->frequency = si470x_get_freq(radio); |
| 1246 | |
| 1247 | return 0; |
| 1248 | } |
| 1249 | |
| 1250 | |
| 1251 | /* |
| 1252 | * si470x_vidioc_s_frequency - set tuner or modulator radio frequency |
| 1253 | */ |
| 1254 | static int si470x_vidioc_s_frequency(struct file *file, void *priv, |
| 1255 | struct v4l2_frequency *freq) |
| 1256 | { |
| 1257 | struct si470x_device *radio = video_get_drvdata(video_devdata(file)); |
| 1258 | |
| 1259 | if (freq->type != V4L2_TUNER_RADIO) |
| 1260 | return -EINVAL; |
| 1261 | |
| 1262 | return si470x_set_freq(radio, freq->frequency); |
| 1263 | } |
| 1264 | |
| 1265 | |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1266 | /* |
| 1267 | * si470x_viddev_tamples - video device interface |
| 1268 | */ |
| 1269 | static struct video_device si470x_viddev_template = { |
| 1270 | .fops = &si470x_fops, |
| 1271 | .name = DRIVER_NAME, |
| 1272 | .type = VID_TYPE_TUNER, |
| 1273 | .release = video_device_release, |
| 1274 | .vidioc_querycap = si470x_vidioc_querycap, |
| 1275 | .vidioc_g_input = si470x_vidioc_g_input, |
| 1276 | .vidioc_s_input = si470x_vidioc_s_input, |
| 1277 | .vidioc_queryctrl = si470x_vidioc_queryctrl, |
| 1278 | .vidioc_g_ctrl = si470x_vidioc_g_ctrl, |
| 1279 | .vidioc_s_ctrl = si470x_vidioc_s_ctrl, |
| 1280 | .vidioc_g_audio = si470x_vidioc_g_audio, |
| 1281 | .vidioc_s_audio = si470x_vidioc_s_audio, |
| 1282 | .vidioc_g_tuner = si470x_vidioc_g_tuner, |
| 1283 | .vidioc_s_tuner = si470x_vidioc_s_tuner, |
| 1284 | .vidioc_g_frequency = si470x_vidioc_g_frequency, |
| 1285 | .vidioc_s_frequency = si470x_vidioc_s_frequency, |
| 1286 | .owner = THIS_MODULE, |
| 1287 | }; |
| 1288 | |
| 1289 | |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 1290 | |
| 1291 | /************************************************************************** |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1292 | * USB Interface |
| 1293 | **************************************************************************/ |
| 1294 | |
| 1295 | /* |
| 1296 | * si470x_usb_driver_probe - probe for the device |
| 1297 | */ |
| 1298 | static int si470x_usb_driver_probe(struct usb_interface *intf, |
| 1299 | const struct usb_device_id *id) |
| 1300 | { |
| 1301 | struct si470x_device *radio; |
| 1302 | |
| 1303 | /* memory and interface allocations */ |
| 1304 | radio = kmalloc(sizeof(struct si470x_device), GFP_KERNEL); |
| 1305 | if (!radio) |
| 1306 | return -ENOMEM; |
| 1307 | radio->videodev = video_device_alloc(); |
| 1308 | if (!radio->videodev) { |
| 1309 | kfree(radio); |
| 1310 | return -ENOMEM; |
| 1311 | } |
| 1312 | memcpy(radio->videodev, &si470x_viddev_template, |
| 1313 | sizeof(si470x_viddev_template)); |
| 1314 | radio->users = 0; |
| 1315 | radio->usbdev = interface_to_usbdev(intf); |
| 1316 | video_set_drvdata(radio->videodev, radio); |
| 1317 | if (video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr)) { |
| 1318 | printk(KERN_WARNING DRIVER_NAME |
| 1319 | ": Could not register video device\n"); |
| 1320 | video_device_release(radio->videodev); |
| 1321 | kfree(radio); |
| 1322 | return -EIO; |
| 1323 | } |
| 1324 | usb_set_intfdata(intf, radio); |
| 1325 | |
| 1326 | /* show some infos about the specific device */ |
| 1327 | if (si470x_get_all_registers(radio) < 0) { |
| 1328 | video_device_release(radio->videodev); |
| 1329 | kfree(radio); |
| 1330 | return -EIO; |
| 1331 | } |
| 1332 | printk(KERN_INFO DRIVER_NAME ": DeviceID=0x%4.4x ChipID=0x%4.4x\n", |
| 1333 | radio->registers[DEVICEID], radio->registers[CHIPID]); |
| 1334 | |
| 1335 | /* check if firmware is current */ |
| 1336 | if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) |
| 1337 | < RADIO_SW_VERSION_CURRENT) |
| 1338 | printk(KERN_WARNING DRIVER_NAME |
| 1339 | ": This driver is known to work with chip version %d, " |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 1340 | "but the device has firmware %d.\n" |
| 1341 | DRIVER_NAME |
| 1342 | "If you have some trouble using this driver, please " |
| 1343 | "report to V4L ML at video4linux-list@redhat.com\n", |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1344 | radio->registers[CHIPID] & CHIPID_FIRMWARE, |
| 1345 | RADIO_SW_VERSION_CURRENT); |
| 1346 | |
| 1347 | /* set initial frequency */ |
| 1348 | si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ |
| 1349 | |
| 1350 | /* rds initialization */ |
| 1351 | radio->buf_size = rds_buf * 3; |
| 1352 | radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); |
| 1353 | if (!radio->buffer) { |
| 1354 | video_device_release(radio->videodev); |
| 1355 | kfree(radio); |
| 1356 | return -ENOMEM; |
| 1357 | } |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1358 | radio->wr_index = 0; |
| 1359 | radio->rd_index = 0; |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1360 | init_waitqueue_head(&radio->read_queue); |
Tobias Lorenz | 8bf5e5c | 2008-01-25 04:19:48 -0300 | [diff] [blame] | 1361 | |
| 1362 | /* prepare polling via eventd */ |
| 1363 | INIT_WORK(&radio->work, si470x_work); |
| 1364 | init_timer(&radio->timer); |
| 1365 | radio->timer.function = si470x_timer; |
| 1366 | radio->timer.data = (unsigned long) radio; |
| 1367 | |
| 1368 | return 0; |
| 1369 | } |
| 1370 | |
| 1371 | |
| 1372 | /* |
| 1373 | * si470x_usb_driver_disconnect - disconnect the device |
| 1374 | */ |
| 1375 | static void si470x_usb_driver_disconnect(struct usb_interface *intf) |
| 1376 | { |
| 1377 | struct si470x_device *radio = usb_get_intfdata(intf); |
| 1378 | |
| 1379 | del_timer_sync(&radio->timer); |
| 1380 | flush_scheduled_work(); |
| 1381 | |
| 1382 | usb_set_intfdata(intf, NULL); |
| 1383 | if (radio) { |
| 1384 | video_unregister_device(radio->videodev); |
| 1385 | kfree(radio->buffer); |
| 1386 | kfree(radio); |
| 1387 | } |
| 1388 | } |
| 1389 | |
| 1390 | |
| 1391 | /* |
| 1392 | * si470x_usb_driver - usb driver interface |
| 1393 | */ |
| 1394 | static struct usb_driver si470x_usb_driver = { |
| 1395 | .name = DRIVER_NAME, |
| 1396 | .probe = si470x_usb_driver_probe, |
| 1397 | .disconnect = si470x_usb_driver_disconnect, |
| 1398 | .id_table = si470x_usb_driver_id_table, |
| 1399 | }; |
| 1400 | |
| 1401 | |
| 1402 | |
| 1403 | /************************************************************************** |
| 1404 | * Module Interface |
Tobias Lorenz | 78656ac | 2008-01-14 21:55:27 -0300 | [diff] [blame] | 1405 | **************************************************************************/ |
| 1406 | |
| 1407 | /* |
| 1408 | * si470x_module_init - module init |
| 1409 | */ |
| 1410 | static int __init si470x_module_init(void) |
| 1411 | { |
| 1412 | printk(KERN_INFO DRIVER_DESC "\n"); |
| 1413 | return usb_register(&si470x_usb_driver); |
| 1414 | } |
| 1415 | |
| 1416 | |
| 1417 | /* |
| 1418 | * si470x_module_exit - module exit |
| 1419 | */ |
| 1420 | static void __exit si470x_module_exit(void) |
| 1421 | { |
| 1422 | usb_deregister(&si470x_usb_driver); |
| 1423 | } |
| 1424 | |
| 1425 | |
| 1426 | module_init(si470x_module_init); |
| 1427 | module_exit(si470x_module_exit); |
| 1428 | |
| 1429 | MODULE_LICENSE("GPL"); |
| 1430 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 1431 | MODULE_DESCRIPTION(DRIVER_DESC); |
Tobias Lorenz | 2fb8840 | 2008-01-25 05:14:57 -0300 | [diff] [blame^] | 1432 | MODULE_VERSION("1.0.4"); |