Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* GemTek radio card driver for Linux (C) 1998 Jonas Munsin <jmunsin@iki.fi> |
| 2 | * |
| 3 | * GemTek hasn't released any specs on the card, so the protocol had to |
| 4 | * be reverse engineered with dosemu. |
| 5 | * |
| 6 | * Besides the protocol changes, this is mostly a copy of: |
| 7 | * |
| 8 | * RadioTrack II driver for Linux radio support (C) 1998 Ben Pfaff |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 9 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * Based on RadioTrack I/RadioReveal (C) 1997 M. Kirkwood |
| 11 | * Converted to new API by Alan Cox <Alan.Cox@linux.org> |
| 12 | * Various bugfixes and enhancements by Russell Kroll <rkroll@exploits.org> |
| 13 | * |
| 14 | * TODO: Allow for more than one of these foolish entities :-) |
| 15 | * |
Mauro Carvalho Chehab | d1c4ecd | 2006-08-08 09:10:01 -0300 | [diff] [blame] | 16 | * Converted to V4L2 API by Mauro Carvalho Chehab <mchehab@infradead.org> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | |
| 19 | #include <linux/module.h> /* Modules */ |
| 20 | #include <linux/init.h> /* Initdata */ |
Peter Osterlund | fb911ee | 2005-09-13 01:25:15 -0700 | [diff] [blame] | 21 | #include <linux/ioport.h> /* request_region */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <linux/delay.h> /* udelay */ |
| 23 | #include <asm/io.h> /* outb, outb_p */ |
| 24 | #include <asm/uaccess.h> /* copy to/from user */ |
Mauro Carvalho Chehab | d1c4ecd | 2006-08-08 09:10:01 -0300 | [diff] [blame] | 25 | #include <linux/videodev2.h> /* kernel radio structs */ |
Mauro Carvalho Chehab | 5e87efa | 2006-06-05 10:26:32 -0300 | [diff] [blame] | 26 | #include <media/v4l2-common.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | #include <linux/spinlock.h> |
| 28 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 29 | #include <linux/version.h> /* for KERNEL_VERSION MACRO */ |
| 30 | #define RADIO_VERSION KERNEL_VERSION(0,0,3) |
| 31 | #define RADIO_BANNER "GemTek Radio card driver: v0.0.3" |
Mauro Carvalho Chehab | d1c4ecd | 2006-08-08 09:10:01 -0300 | [diff] [blame] | 32 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 33 | /* |
| 34 | * Module info. |
| 35 | */ |
| 36 | |
| 37 | MODULE_AUTHOR("Jonas Munsin, Pekka Seppänen <pexu@kapsi.fi>"); |
| 38 | MODULE_DESCRIPTION("A driver for the GemTek Radio card."); |
| 39 | MODULE_LICENSE("GPL"); |
| 40 | |
| 41 | /* |
| 42 | * Module params. |
| 43 | */ |
Mauro Carvalho Chehab | d1c4ecd | 2006-08-08 09:10:01 -0300 | [diff] [blame] | 44 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 45 | #ifndef CONFIG_RADIO_GEMTEK_PORT |
| 46 | #define CONFIG_RADIO_GEMTEK_PORT -1 |
| 47 | #endif |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 48 | #ifndef CONFIG_RADIO_GEMTEK_PROBE |
| 49 | #define CONFIG_RADIO_GEMTEK_PROBE 1 |
| 50 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 52 | static int io = CONFIG_RADIO_GEMTEK_PORT; |
| 53 | static int probe = CONFIG_RADIO_GEMTEK_PROBE; |
| 54 | static int hardmute; |
| 55 | static int shutdown = 1; |
| 56 | static int keepmuted = 1; |
| 57 | static int initmute = 1; |
| 58 | static int radio_nr = -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 59 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 60 | module_param(io, int, 0444); |
| 61 | MODULE_PARM_DESC(io, "Force I/O port for the GemTek Radio card if automatic" |
| 62 | "probing is disabled or fails. The most common I/O ports are: 0x20c " |
| 63 | "0x30c, 0x24c or 0x34c (0x20c, 0x248 and 0x28c have been reported to " |
| 64 | " work for the combined sound/radiocard)."); |
| 65 | |
| 66 | module_param(probe, bool, 0444); |
| 67 | MODULE_PARM_DESC(probe, "Enable automatic device probing. Note: only the most " |
| 68 | "common I/O ports used by the card are probed."); |
| 69 | |
| 70 | module_param(hardmute, bool, 0644); |
| 71 | MODULE_PARM_DESC(hardmute, "Enable `hard muting' by shutting down PLL, may " |
| 72 | "reduce static noise."); |
| 73 | |
| 74 | module_param(shutdown, bool, 0644); |
| 75 | MODULE_PARM_DESC(shutdown, "Enable shutting down PLL and muting line when " |
| 76 | "module is unloaded."); |
| 77 | |
| 78 | module_param(keepmuted, bool, 0644); |
| 79 | MODULE_PARM_DESC(keepmuted, "Keep card muted even when frequency is changed."); |
| 80 | |
| 81 | module_param(initmute, bool, 0444); |
| 82 | MODULE_PARM_DESC(initmute, "Mute card when module is loaded."); |
| 83 | |
| 84 | module_param(radio_nr, int, 0444); |
| 85 | |
| 86 | /* |
| 87 | * Functions for controlling the card. |
| 88 | */ |
| 89 | #define GEMTEK_LOWFREQ (87*16000) |
| 90 | #define GEMTEK_HIGHFREQ (108*16000) |
| 91 | |
Trent Piepho | 857e594 | 2007-10-01 00:32:25 -0300 | [diff] [blame^] | 92 | /* |
| 93 | * Frequency calculation constants. Intermediate frequency 10.52 MHz (nominal |
| 94 | * value 10.7 MHz), reference divisor 6.39 kHz (nominal 6.25 kHz). |
| 95 | */ |
| 96 | #define FSCALE 8 |
| 97 | #define IF_OFFSET ((unsigned int)(10.52 * 16000 * (1<<FSCALE))) |
| 98 | #define REF_FREQ ((unsigned int)(6.39 * 16 * (1<<FSCALE))) |
| 99 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 100 | #define GEMTEK_CK 0x01 /* Clock signal */ |
| 101 | #define GEMTEK_DA 0x02 /* Serial data */ |
| 102 | #define GEMTEK_CE 0x04 /* Chip enable */ |
| 103 | #define GEMTEK_NS 0x08 /* No signal */ |
| 104 | #define GEMTEK_MT 0x10 /* Line mute */ |
| 105 | #define GEMTEK_STDF_3_125_KHZ 0x01 /* Standard frequency 3.125 kHz */ |
| 106 | #define GEMTEK_PLL_OFF 0x07 /* PLL off */ |
| 107 | |
| 108 | #define BU2614_BUS_SIZE 32 /* BU2614 / BU2614FS bus size */ |
| 109 | #define BU2614_NOPS 8 /* Number of supported operations */ |
| 110 | |
| 111 | #define SHORT_DELAY 5 /* usec */ |
| 112 | #define LONG_DELAY 75 /* usec */ |
| 113 | |
| 114 | struct gemtek_device { |
| 115 | unsigned long lastfreq; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | int muted; |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 117 | unsigned long bu2614data[BU2614_NOPS]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | }; |
| 119 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 120 | enum { |
| 121 | BU2614_VOID, |
| 122 | BU2614_FREQ, /* D0..D15, Frequency data */ |
| 123 | BU2614_PORT, /* P0..P2, Output port control data */ |
| 124 | BU2614_FMES, /* CT, Frequency measurement beginning data */ |
| 125 | BU2614_STDF, /* R0..R2, Standard frequency data */ |
| 126 | BU2614_SWIN, /* S, Switch between FMIN / AMIN */ |
| 127 | BU2614_SWAL, /* PS, Swallow counter division (AMIN only) */ |
| 128 | BU2614_FMUN, /* GT, Frequency measurement time and unlock */ |
| 129 | BU2614_TEST /* TS, Test data is input */ |
| 130 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 132 | struct bu2614_op { |
| 133 | int op; /* Operation */ |
| 134 | int size; /* Data size */ |
| 135 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 137 | static struct gemtek_device gemtek_unit; |
| 138 | |
| 139 | static struct bu2614_op bu2614ops[] = { |
| 140 | {.op = BU2614_FREQ, |
| 141 | .size = 0x10}, |
| 142 | {.op = BU2614_PORT, |
| 143 | .size = 0x03}, |
| 144 | {.op = BU2614_VOID, |
| 145 | .size = 0x04}, |
| 146 | {.op = BU2614_FMES, |
| 147 | .size = 0x01}, |
| 148 | {.op = BU2614_STDF, |
| 149 | .size = 0x03}, |
| 150 | {.op = BU2614_SWIN, |
| 151 | .size = 0x01}, |
| 152 | {.op = BU2614_SWAL, |
| 153 | .size = 0x01}, |
| 154 | {.op = BU2614_VOID, |
| 155 | .size = 0x01}, |
| 156 | {.op = BU2614_FMUN, |
| 157 | .size = 0x01}, |
| 158 | {.op = BU2614_TEST, |
| 159 | .size = 0x01} |
| 160 | }; |
| 161 | |
| 162 | static spinlock_t lock; |
| 163 | |
| 164 | /* |
| 165 | * Set data which will be sent to BU2614FS. |
| 166 | */ |
| 167 | static void gemtek_bu2614_set(struct gemtek_device *dev, int op, |
| 168 | unsigned long data) |
| 169 | { |
| 170 | int i, q; |
| 171 | |
| 172 | for (i = 0, q = 0; q < ARRAY_SIZE(dev->bu2614data); ++i) { |
| 173 | if (bu2614ops[i].op == op) { |
| 174 | dev->bu2614data[q] = |
| 175 | data & ((1 << bu2614ops[i].size) - 1); |
| 176 | return; |
| 177 | } |
| 178 | |
| 179 | if (bu2614ops[i].op != BU2614_VOID) |
| 180 | ++q; |
| 181 | } |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * Transmit settings to BU2614FS over GemTek IC. |
| 186 | */ |
| 187 | static void gemtek_bu2614_transmit(struct gemtek_device *dev) |
| 188 | { |
| 189 | int i, bit, q, mute; |
| 190 | |
| 191 | spin_lock(&lock); |
| 192 | |
| 193 | mute = dev->muted ? GEMTEK_MT : 0x00; |
| 194 | |
| 195 | outb_p(mute | GEMTEK_DA | GEMTEK_CK, io); |
| 196 | udelay(SHORT_DELAY); |
| 197 | outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io); |
| 198 | udelay(LONG_DELAY); |
| 199 | |
| 200 | for (i = 0, q = 0; q < ARRAY_SIZE(dev->bu2614data); ++i) { |
| 201 | for (bit = 0; bit < bu2614ops[i].size; ++bit) { |
| 202 | if (bu2614ops[i].op != BU2614_VOID && |
| 203 | dev->bu2614data[q] & (1 << bit)) { |
| 204 | outb_p(mute | GEMTEK_CE | GEMTEK_DA, io); |
| 205 | udelay(SHORT_DELAY); |
| 206 | outb_p(mute | GEMTEK_CE | GEMTEK_DA | |
| 207 | GEMTEK_CK, io); |
| 208 | udelay(SHORT_DELAY); |
| 209 | } else { |
| 210 | outb_p(mute | GEMTEK_CE, io); |
| 211 | udelay(SHORT_DELAY); |
| 212 | outb_p(mute | GEMTEK_CE | GEMTEK_CK, io); |
| 213 | udelay(SHORT_DELAY); |
| 214 | } |
| 215 | } |
| 216 | |
| 217 | if (bu2614ops[i].op != BU2614_VOID) |
| 218 | ++q; |
| 219 | } |
| 220 | |
| 221 | outb_p(mute | GEMTEK_DA | GEMTEK_CK, io); |
| 222 | udelay(SHORT_DELAY); |
| 223 | outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, io); |
| 224 | udelay(LONG_DELAY); |
| 225 | |
| 226 | spin_unlock(&lock); |
| 227 | } |
| 228 | |
| 229 | /* |
Trent Piepho | 857e594 | 2007-10-01 00:32:25 -0300 | [diff] [blame^] | 230 | * Calculate divisor from FM-frequency for BU2614FS (3.125 KHz STDF expected). |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 231 | */ |
Trent Piepho | 857e594 | 2007-10-01 00:32:25 -0300 | [diff] [blame^] | 232 | static unsigned long gemtek_convfreq(unsigned long freq) |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 233 | { |
Trent Piepho | 857e594 | 2007-10-01 00:32:25 -0300 | [diff] [blame^] | 234 | return ((freq<<FSCALE) + IF_OFFSET + REF_FREQ/2) / REF_FREQ; |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 235 | } |
| 236 | |
| 237 | /* |
| 238 | * Set FM-frequency. |
| 239 | */ |
| 240 | static void gemtek_setfreq(struct gemtek_device *dev, unsigned long freq) |
| 241 | { |
| 242 | |
| 243 | if (keepmuted && hardmute && dev->muted) |
| 244 | return; |
| 245 | |
| 246 | if (freq < GEMTEK_LOWFREQ) |
| 247 | freq = GEMTEK_LOWFREQ; |
| 248 | else if (freq > GEMTEK_HIGHFREQ) |
| 249 | freq = GEMTEK_HIGHFREQ; |
| 250 | |
| 251 | dev->lastfreq = freq; |
| 252 | dev->muted = 0; |
| 253 | |
| 254 | gemtek_bu2614_set(dev, BU2614_PORT, 0); |
| 255 | gemtek_bu2614_set(dev, BU2614_FMES, 0); |
| 256 | gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode */ |
| 257 | gemtek_bu2614_set(dev, BU2614_SWAL, 0); |
| 258 | gemtek_bu2614_set(dev, BU2614_FMUN, 1); /* GT bit set */ |
| 259 | gemtek_bu2614_set(dev, BU2614_TEST, 0); |
| 260 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 261 | gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_STDF_3_125_KHZ); |
Trent Piepho | 857e594 | 2007-10-01 00:32:25 -0300 | [diff] [blame^] | 262 | gemtek_bu2614_set(dev, BU2614_FREQ, gemtek_convfreq(freq)); |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 263 | |
| 264 | gemtek_bu2614_transmit(dev); |
| 265 | } |
| 266 | |
| 267 | /* |
| 268 | * Set mute flag. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 269 | */ |
| 270 | static void gemtek_mute(struct gemtek_device *dev) |
| 271 | { |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 272 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 273 | dev->muted = 1; |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 274 | |
| 275 | if (hardmute) { |
| 276 | /* Turn off PLL, disable data output */ |
| 277 | gemtek_bu2614_set(dev, BU2614_PORT, 0); |
| 278 | gemtek_bu2614_set(dev, BU2614_FMES, 0); /* CT bit off */ |
| 279 | gemtek_bu2614_set(dev, BU2614_SWIN, 0); /* FM-mode */ |
| 280 | gemtek_bu2614_set(dev, BU2614_SWAL, 0); |
| 281 | gemtek_bu2614_set(dev, BU2614_FMUN, 0); /* GT bit off */ |
| 282 | gemtek_bu2614_set(dev, BU2614_TEST, 0); |
| 283 | gemtek_bu2614_set(dev, BU2614_STDF, GEMTEK_PLL_OFF); |
| 284 | gemtek_bu2614_set(dev, BU2614_FREQ, 0); |
| 285 | gemtek_bu2614_transmit(dev); |
| 286 | } else { |
| 287 | spin_lock(&lock); |
| 288 | |
| 289 | /* Read bus contents (CE, CK and DA). */ |
| 290 | i = inb_p(io); |
| 291 | /* Write it back with mute flag set. */ |
| 292 | outb_p((i >> 5) | GEMTEK_MT, io); |
| 293 | udelay(SHORT_DELAY); |
| 294 | |
| 295 | spin_unlock(&lock); |
| 296 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 297 | } |
| 298 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 299 | /* |
| 300 | * Unset mute flag. |
| 301 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | static void gemtek_unmute(struct gemtek_device *dev) |
| 303 | { |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 304 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 305 | dev->muted = 0; |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 306 | |
| 307 | if (hardmute) { |
| 308 | /* Turn PLL back on. */ |
| 309 | gemtek_setfreq(dev, dev->lastfreq); |
| 310 | } else { |
| 311 | spin_lock(&lock); |
| 312 | |
| 313 | i = inb_p(io); |
| 314 | outb_p(i >> 5, io); |
| 315 | udelay(SHORT_DELAY); |
| 316 | |
| 317 | spin_unlock(&lock); |
| 318 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | } |
| 320 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 321 | /* |
| 322 | * Get signal strength (= stereo status). |
| 323 | */ |
| 324 | static inline int gemtek_getsigstr(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | { |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 326 | return inb_p(io) & GEMTEK_NS ? 0 : 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | } |
| 328 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 329 | /* |
| 330 | * Check if requested card acts like GemTek Radio card. |
| 331 | */ |
| 332 | static int gemtek_verify(int port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 333 | { |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 334 | static int verified = -1; |
| 335 | int i, q; |
| 336 | |
| 337 | if (verified == port) |
| 338 | return 1; |
| 339 | |
| 340 | spin_lock(&lock); |
| 341 | |
| 342 | q = inb_p(port); /* Read bus contents before probing. */ |
| 343 | /* Try to turn on CE, CK and DA respectively and check if card responds |
| 344 | properly. */ |
| 345 | for (i = 0; i < 3; ++i) { |
| 346 | outb_p(1 << i, port); |
| 347 | udelay(SHORT_DELAY); |
| 348 | |
| 349 | if ((inb_p(port) & (~GEMTEK_NS)) != (0x17 | (1 << (i + 5)))) { |
| 350 | spin_unlock(&lock); |
| 351 | return 0; |
| 352 | } |
| 353 | } |
| 354 | outb_p(q >> 5, port); /* Write bus contents back. */ |
| 355 | udelay(SHORT_DELAY); |
| 356 | |
| 357 | spin_unlock(&lock); |
| 358 | verified = port; |
| 359 | |
| 360 | return 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | } |
| 362 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 363 | /* |
| 364 | * Automatic probing for card. |
| 365 | */ |
| 366 | static int gemtek_probe(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 367 | { |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 368 | int ioports[] = { 0x20c, 0x30c, 0x24c, 0x34c, 0x248, 0x28c }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | int i; |
| 370 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 371 | if (!probe) { |
| 372 | printk(KERN_INFO "Automatic device probing disabled.\n"); |
| 373 | return -1; |
| 374 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 376 | printk(KERN_INFO "Automatic device probing enabled.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 378 | for (i = 0; i < ARRAY_SIZE(ioports); ++i) { |
| 379 | printk(KERN_INFO "Trying I/O port 0x%x...\n", ioports[i]); |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 380 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 381 | if (!request_region(ioports[i], 1, "gemtek-probe")) { |
| 382 | printk(KERN_WARNING "I/O port 0x%x busy!\n", |
| 383 | ioports[i]); |
| 384 | continue; |
| 385 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 386 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 387 | if (gemtek_verify(ioports[i])) { |
| 388 | printk(KERN_INFO "Card found from I/O port " |
| 389 | "0x%x!\n", ioports[i]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 390 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 391 | release_region(ioports[i], 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 393 | io = ioports[i]; |
| 394 | return io; |
| 395 | } |
Mauro Carvalho Chehab | 4286c6f | 2006-04-08 16:06:16 -0300 | [diff] [blame] | 396 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 397 | release_region(ioports[i], 1); |
| 398 | } |
| 399 | |
| 400 | printk(KERN_ERR "Automatic probing failed!\n"); |
| 401 | |
| 402 | return -1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | } |
| 404 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 405 | /* |
| 406 | * Video 4 Linux stuff. |
| 407 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 409 | static struct v4l2_queryctrl radio_qctrl[] = { |
| 410 | { |
| 411 | .id = V4L2_CID_AUDIO_MUTE, |
| 412 | .name = "Mute", |
| 413 | .minimum = 0, |
| 414 | .maximum = 1, |
| 415 | .default_value = 1, |
| 416 | .type = V4L2_CTRL_TYPE_BOOLEAN, |
| 417 | }, { |
| 418 | .id = V4L2_CID_AUDIO_VOLUME, |
| 419 | .name = "Volume", |
| 420 | .minimum = 0, |
| 421 | .maximum = 65535, |
| 422 | .step = 65535, |
| 423 | .default_value = 0xff, |
| 424 | .type = V4L2_CTRL_TYPE_INTEGER, |
| 425 | } |
| 426 | }; |
| 427 | |
| 428 | static struct file_operations gemtek_fops = { |
| 429 | .owner = THIS_MODULE, |
| 430 | .open = video_exclusive_open, |
| 431 | .release = video_exclusive_release, |
| 432 | .ioctl = video_ioctl2, |
| 433 | .compat_ioctl = v4l_compat_ioctl32, |
| 434 | .llseek = no_llseek |
| 435 | }; |
| 436 | |
| 437 | static int vidioc_querycap(struct file *file, void *priv, |
| 438 | struct v4l2_capability *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 439 | { |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 440 | strlcpy(v->driver, "radio-gemtek", sizeof(v->driver)); |
| 441 | strlcpy(v->card, "GemTek", sizeof(v->card)); |
| 442 | sprintf(v->bus_info, "ISA"); |
| 443 | v->version = RADIO_VERSION; |
| 444 | v->capabilities = V4L2_CAP_TUNER; |
| 445 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 446 | } |
| 447 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 448 | static int vidioc_g_tuner(struct file *file, void *priv, struct v4l2_tuner *v) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | { |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 450 | if (v->index > 0) |
| 451 | return -EINVAL; |
| 452 | |
| 453 | strcpy(v->name, "FM"); |
| 454 | v->type = V4L2_TUNER_RADIO; |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 455 | v->rangelow = GEMTEK_LOWFREQ; |
| 456 | v->rangehigh = GEMTEK_HIGHFREQ; |
| 457 | v->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; |
| 458 | v->signal = 0xffff * gemtek_getsigstr(); |
| 459 | if (v->signal) { |
| 460 | v->audmode = V4L2_TUNER_MODE_STEREO; |
| 461 | v->rxsubchans = V4L2_TUNER_SUB_STEREO; |
| 462 | } else { |
| 463 | v->audmode = V4L2_TUNER_MODE_MONO; |
| 464 | v->rxsubchans = V4L2_TUNER_SUB_MONO; |
| 465 | } |
| 466 | |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 467 | return 0; |
| 468 | } |
| 469 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 470 | static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *v) |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 471 | { |
| 472 | if (v->index > 0) |
| 473 | return -EINVAL; |
| 474 | return 0; |
| 475 | } |
| 476 | |
| 477 | static int vidioc_s_frequency(struct file *file, void *priv, |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 478 | struct v4l2_frequency *f) |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 479 | { |
| 480 | struct video_device *dev = video_devdata(file); |
| 481 | struct gemtek_device *rt = dev->priv; |
| 482 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 483 | gemtek_setfreq(rt, f->frequency); |
| 484 | |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 485 | return 0; |
| 486 | } |
| 487 | |
| 488 | static int vidioc_g_frequency(struct file *file, void *priv, |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 489 | struct v4l2_frequency *f) |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 490 | { |
| 491 | struct video_device *dev = video_devdata(file); |
| 492 | struct gemtek_device *rt = dev->priv; |
| 493 | |
| 494 | f->type = V4L2_TUNER_RADIO; |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 495 | f->frequency = rt->lastfreq; |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 496 | return 0; |
| 497 | } |
| 498 | |
| 499 | static int vidioc_queryctrl(struct file *file, void *priv, |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 500 | struct v4l2_queryctrl *qc) |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 501 | { |
| 502 | int i; |
| 503 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 504 | for (i = 0; i < ARRAY_SIZE(radio_qctrl); ++i) { |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 505 | if (qc->id && qc->id == radio_qctrl[i].id) { |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 506 | memcpy(qc, &(radio_qctrl[i]), sizeof(*qc)); |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 507 | return 0; |
| 508 | } |
| 509 | } |
| 510 | return -EINVAL; |
| 511 | } |
| 512 | |
| 513 | static int vidioc_g_ctrl(struct file *file, void *priv, |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 514 | struct v4l2_control *ctrl) |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 515 | { |
| 516 | struct video_device *dev = video_devdata(file); |
| 517 | struct gemtek_device *rt = dev->priv; |
| 518 | |
| 519 | switch (ctrl->id) { |
| 520 | case V4L2_CID_AUDIO_MUTE: |
| 521 | ctrl->value = rt->muted; |
| 522 | return 0; |
| 523 | case V4L2_CID_AUDIO_VOLUME: |
| 524 | if (rt->muted) |
| 525 | ctrl->value = 0; |
| 526 | else |
| 527 | ctrl->value = 65535; |
| 528 | return 0; |
| 529 | } |
| 530 | return -EINVAL; |
| 531 | } |
| 532 | |
| 533 | static int vidioc_s_ctrl(struct file *file, void *priv, |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 534 | struct v4l2_control *ctrl) |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 535 | { |
| 536 | struct video_device *dev = video_devdata(file); |
| 537 | struct gemtek_device *rt = dev->priv; |
| 538 | |
| 539 | switch (ctrl->id) { |
| 540 | case V4L2_CID_AUDIO_MUTE: |
| 541 | if (ctrl->value) |
| 542 | gemtek_mute(rt); |
| 543 | else |
| 544 | gemtek_unmute(rt); |
| 545 | return 0; |
| 546 | case V4L2_CID_AUDIO_VOLUME: |
| 547 | if (ctrl->value) |
| 548 | gemtek_unmute(rt); |
| 549 | else |
| 550 | gemtek_mute(rt); |
| 551 | return 0; |
| 552 | } |
| 553 | return -EINVAL; |
| 554 | } |
| 555 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 556 | static int vidioc_g_audio(struct file *file, void *priv, struct v4l2_audio *a) |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 557 | { |
| 558 | if (a->index > 1) |
| 559 | return -EINVAL; |
| 560 | |
| 561 | strcpy(a->name, "Radio"); |
| 562 | a->capability = V4L2_AUDCAP_STEREO; |
| 563 | return 0; |
| 564 | } |
| 565 | |
| 566 | static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i) |
| 567 | { |
| 568 | *i = 0; |
| 569 | return 0; |
| 570 | } |
| 571 | |
| 572 | static int vidioc_s_input(struct file *filp, void *priv, unsigned int i) |
| 573 | { |
| 574 | if (i != 0) |
| 575 | return -EINVAL; |
| 576 | return 0; |
| 577 | } |
| 578 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 579 | static int vidioc_s_audio(struct file *file, void *priv, struct v4l2_audio *a) |
Douglas Landgraf | e9bb9c6 | 2007-04-25 00:15:46 -0300 | [diff] [blame] | 580 | { |
| 581 | if (a->index != 0) |
| 582 | return -EINVAL; |
| 583 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 584 | } |
| 585 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 586 | static struct video_device gemtek_radio = { |
| 587 | .owner = THIS_MODULE, |
| 588 | .name = "GemTek Radio card", |
| 589 | .type = VID_TYPE_TUNER, |
| 590 | .hardware = VID_HARDWARE_GEMTEK, |
| 591 | .fops = &gemtek_fops, |
| 592 | .vidioc_querycap = vidioc_querycap, |
| 593 | .vidioc_g_tuner = vidioc_g_tuner, |
| 594 | .vidioc_s_tuner = vidioc_s_tuner, |
| 595 | .vidioc_g_audio = vidioc_g_audio, |
| 596 | .vidioc_s_audio = vidioc_s_audio, |
| 597 | .vidioc_g_input = vidioc_g_input, |
| 598 | .vidioc_s_input = vidioc_s_input, |
| 599 | .vidioc_g_frequency = vidioc_g_frequency, |
| 600 | .vidioc_s_frequency = vidioc_s_frequency, |
| 601 | .vidioc_queryctrl = vidioc_queryctrl, |
| 602 | .vidioc_g_ctrl = vidioc_g_ctrl, |
| 603 | .vidioc_s_ctrl = vidioc_s_ctrl |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 604 | }; |
| 605 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 606 | /* |
| 607 | * Initialization / cleanup related stuff. |
| 608 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 609 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 610 | /* |
| 611 | * Initilize card. |
| 612 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 613 | static int __init gemtek_init(void) |
| 614 | { |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 615 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 616 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 617 | printk(KERN_INFO RADIO_BANNER "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | |
| 619 | spin_lock_init(&lock); |
| 620 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 621 | gemtek_probe(); |
| 622 | if (io) { |
| 623 | if (!request_region(io, 1, "gemtek")) { |
| 624 | printk(KERN_ERR "I/O port 0x%x already in use.\n", io); |
| 625 | return -EBUSY; |
| 626 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 628 | if (!gemtek_verify(io)) |
| 629 | printk(KERN_WARNING "Card at I/O port 0x%x does not " |
| 630 | "respond properly, check your " |
| 631 | "configuration.\n", io); |
| 632 | else |
| 633 | printk(KERN_INFO "Using I/O port 0x%x.\n", io); |
| 634 | } else if (probe) { |
| 635 | printk(KERN_ERR "Automatic probing failed and no " |
| 636 | "fixed I/O port defined.\n"); |
| 637 | return -ENODEV; |
| 638 | } else { |
| 639 | printk(KERN_ERR "Automatic probing disabled but no fixed " |
| 640 | "I/O port defined."); |
| 641 | return -EINVAL; |
| 642 | } |
| 643 | |
| 644 | gemtek_radio.priv = &gemtek_unit; |
| 645 | |
| 646 | if (video_register_device(&gemtek_radio, VFL_TYPE_RADIO, |
| 647 | radio_nr) == -1) { |
| 648 | release_region(io, 1); |
| 649 | return -EBUSY; |
| 650 | } |
| 651 | |
| 652 | /* Set defaults */ |
| 653 | gemtek_unit.lastfreq = GEMTEK_LOWFREQ; |
| 654 | for (i = 0; i < ARRAY_SIZE(gemtek_unit.bu2614data); ++i) |
| 655 | gemtek_unit.bu2614data[i] = 0; |
| 656 | |
| 657 | if (initmute) |
| 658 | gemtek_mute(&gemtek_unit); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | |
| 660 | return 0; |
| 661 | } |
| 662 | |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 663 | /* |
| 664 | * Module cleanup |
| 665 | */ |
| 666 | static void __exit gemtek_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 667 | { |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 668 | if (shutdown) { |
| 669 | hardmute = 1; /* Turn off PLL */ |
| 670 | gemtek_mute(&gemtek_unit); |
| 671 | } else { |
| 672 | printk(KERN_INFO "Module unloaded but card not muted!\n"); |
| 673 | } |
| 674 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | video_unregister_device(&gemtek_radio); |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 676 | release_region(io, 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 677 | } |
| 678 | |
| 679 | module_init(gemtek_init); |
Pekka Seppanen | 4753647 | 2007-10-01 00:27:55 -0300 | [diff] [blame] | 680 | module_exit(gemtek_exit); |