mts64.c 26 KB

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  1. // SPDX-License-Identifier: GPL-2.0-or-later
  2. /*
  3. * ALSA Driver for Ego Systems Inc. (ESI) Miditerminal 4140
  4. * Copyright (c) 2006 by Matthias König <mk@phasorlab.de>
  5. */
  6. #include <linux/init.h>
  7. #include <linux/platform_device.h>
  8. #include <linux/parport.h>
  9. #include <linux/spinlock.h>
  10. #include <linux/module.h>
  11. #include <linux/delay.h>
  12. #include <linux/slab.h>
  13. #include <sound/core.h>
  14. #include <sound/initval.h>
  15. #include <sound/rawmidi.h>
  16. #include <sound/control.h>
  17. #define CARD_NAME "Miditerminal 4140"
  18. #define DRIVER_NAME "MTS64"
  19. #define PLATFORM_DRIVER "snd_mts64"
  20. static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
  21. static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
  22. static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
  23. static struct platform_device *platform_devices[SNDRV_CARDS];
  24. static int device_count;
  25. module_param_array(index, int, NULL, 0444);
  26. MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
  27. module_param_array(id, charp, NULL, 0444);
  28. MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
  29. module_param_array(enable, bool, NULL, 0444);
  30. MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
  31. MODULE_AUTHOR("Matthias Koenig <mk@phasorlab.de>");
  32. MODULE_DESCRIPTION("ESI Miditerminal 4140");
  33. MODULE_LICENSE("GPL");
  34. MODULE_SUPPORTED_DEVICE("{{ESI,Miditerminal 4140}}");
  35. /*********************************************************************
  36. * Chip specific
  37. *********************************************************************/
  38. #define MTS64_NUM_INPUT_PORTS 5
  39. #define MTS64_NUM_OUTPUT_PORTS 4
  40. #define MTS64_SMPTE_SUBSTREAM 4
  41. struct mts64 {
  42. spinlock_t lock;
  43. struct snd_card *card;
  44. struct snd_rawmidi *rmidi;
  45. struct pardevice *pardev;
  46. int open_count;
  47. int current_midi_output_port;
  48. int current_midi_input_port;
  49. u8 mode[MTS64_NUM_INPUT_PORTS];
  50. struct snd_rawmidi_substream *midi_input_substream[MTS64_NUM_INPUT_PORTS];
  51. int smpte_switch;
  52. u8 time[4]; /* [0]=hh, [1]=mm, [2]=ss, [3]=ff */
  53. u8 fps;
  54. };
  55. static int snd_mts64_free(struct mts64 *mts)
  56. {
  57. kfree(mts);
  58. return 0;
  59. }
  60. static int snd_mts64_create(struct snd_card *card,
  61. struct pardevice *pardev,
  62. struct mts64 **rchip)
  63. {
  64. struct mts64 *mts;
  65. *rchip = NULL;
  66. mts = kzalloc(sizeof(struct mts64), GFP_KERNEL);
  67. if (mts == NULL)
  68. return -ENOMEM;
  69. /* Init chip specific data */
  70. spin_lock_init(&mts->lock);
  71. mts->card = card;
  72. mts->pardev = pardev;
  73. mts->current_midi_output_port = -1;
  74. mts->current_midi_input_port = -1;
  75. *rchip = mts;
  76. return 0;
  77. }
  78. /*********************************************************************
  79. * HW register related constants
  80. *********************************************************************/
  81. /* Status Bits */
  82. #define MTS64_STAT_BSY 0x80
  83. #define MTS64_STAT_BIT_SET 0x20 /* readout process, bit is set */
  84. #define MTS64_STAT_PORT 0x10 /* read byte is a port number */
  85. /* Control Bits */
  86. #define MTS64_CTL_READOUT 0x08 /* enable readout */
  87. #define MTS64_CTL_WRITE_CMD 0x06
  88. #define MTS64_CTL_WRITE_DATA 0x02
  89. #define MTS64_CTL_STROBE 0x01
  90. /* Command */
  91. #define MTS64_CMD_RESET 0xfe
  92. #define MTS64_CMD_PROBE 0x8f /* Used in probing procedure */
  93. #define MTS64_CMD_SMPTE_SET_TIME 0xe8
  94. #define MTS64_CMD_SMPTE_SET_FPS 0xee
  95. #define MTS64_CMD_SMPTE_STOP 0xef
  96. #define MTS64_CMD_SMPTE_FPS_24 0xe3
  97. #define MTS64_CMD_SMPTE_FPS_25 0xe2
  98. #define MTS64_CMD_SMPTE_FPS_2997 0xe4
  99. #define MTS64_CMD_SMPTE_FPS_30D 0xe1
  100. #define MTS64_CMD_SMPTE_FPS_30 0xe0
  101. #define MTS64_CMD_COM_OPEN 0xf8 /* setting the communication mode */
  102. #define MTS64_CMD_COM_CLOSE1 0xff /* clearing communication mode */
  103. #define MTS64_CMD_COM_CLOSE2 0xf5
  104. /*********************************************************************
  105. * Hardware specific functions
  106. *********************************************************************/
  107. static void mts64_enable_readout(struct parport *p);
  108. static void mts64_disable_readout(struct parport *p);
  109. static int mts64_device_ready(struct parport *p);
  110. static int mts64_device_init(struct parport *p);
  111. static int mts64_device_open(struct mts64 *mts);
  112. static int mts64_device_close(struct mts64 *mts);
  113. static u8 mts64_map_midi_input(u8 c);
  114. static int mts64_probe(struct parport *p);
  115. static u16 mts64_read(struct parport *p);
  116. static u8 mts64_read_char(struct parport *p);
  117. static void mts64_smpte_start(struct parport *p,
  118. u8 hours, u8 minutes,
  119. u8 seconds, u8 frames,
  120. u8 idx);
  121. static void mts64_smpte_stop(struct parport *p);
  122. static void mts64_write_command(struct parport *p, u8 c);
  123. static void mts64_write_data(struct parport *p, u8 c);
  124. static void mts64_write_midi(struct mts64 *mts, u8 c, int midiport);
  125. /* Enables the readout procedure
  126. *
  127. * Before we can read a midi byte from the device, we have to set
  128. * bit 3 of control port.
  129. */
  130. static void mts64_enable_readout(struct parport *p)
  131. {
  132. u8 c;
  133. c = parport_read_control(p);
  134. c |= MTS64_CTL_READOUT;
  135. parport_write_control(p, c);
  136. }
  137. /* Disables readout
  138. *
  139. * Readout is disabled by clearing bit 3 of control
  140. */
  141. static void mts64_disable_readout(struct parport *p)
  142. {
  143. u8 c;
  144. c = parport_read_control(p);
  145. c &= ~MTS64_CTL_READOUT;
  146. parport_write_control(p, c);
  147. }
  148. /* waits for device ready
  149. *
  150. * Checks if BUSY (Bit 7 of status) is clear
  151. * 1 device ready
  152. * 0 failure
  153. */
  154. static int mts64_device_ready(struct parport *p)
  155. {
  156. int i;
  157. u8 c;
  158. for (i = 0; i < 0xffff; ++i) {
  159. c = parport_read_status(p);
  160. c &= MTS64_STAT_BSY;
  161. if (c != 0)
  162. return 1;
  163. }
  164. return 0;
  165. }
  166. /* Init device (LED blinking startup magic)
  167. *
  168. * Returns:
  169. * 0 init ok
  170. * -EIO failure
  171. */
  172. static int mts64_device_init(struct parport *p)
  173. {
  174. int i;
  175. mts64_write_command(p, MTS64_CMD_RESET);
  176. for (i = 0; i < 64; ++i) {
  177. msleep(100);
  178. if (mts64_probe(p) == 0) {
  179. /* success */
  180. mts64_disable_readout(p);
  181. return 0;
  182. }
  183. }
  184. mts64_disable_readout(p);
  185. return -EIO;
  186. }
  187. /*
  188. * Opens the device (set communication mode)
  189. */
  190. static int mts64_device_open(struct mts64 *mts)
  191. {
  192. int i;
  193. struct parport *p = mts->pardev->port;
  194. for (i = 0; i < 5; ++i)
  195. mts64_write_command(p, MTS64_CMD_COM_OPEN);
  196. return 0;
  197. }
  198. /*
  199. * Close device (clear communication mode)
  200. */
  201. static int mts64_device_close(struct mts64 *mts)
  202. {
  203. int i;
  204. struct parport *p = mts->pardev->port;
  205. for (i = 0; i < 5; ++i) {
  206. mts64_write_command(p, MTS64_CMD_COM_CLOSE1);
  207. mts64_write_command(p, MTS64_CMD_COM_CLOSE2);
  208. }
  209. return 0;
  210. }
  211. /* map hardware port to substream number
  212. *
  213. * When reading a byte from the device, the device tells us
  214. * on what port the byte is. This HW port has to be mapped to
  215. * the midiport (substream number).
  216. * substream 0-3 are Midiports 1-4
  217. * substream 4 is SMPTE Timecode
  218. * The mapping is done by the table:
  219. * HW | 0 | 1 | 2 | 3 | 4
  220. * SW | 0 | 1 | 4 | 2 | 3
  221. */
  222. static u8 mts64_map_midi_input(u8 c)
  223. {
  224. static const u8 map[] = { 0, 1, 4, 2, 3 };
  225. return map[c];
  226. }
  227. /* Probe parport for device
  228. *
  229. * Do we have a Miditerminal 4140 on parport?
  230. * Returns:
  231. * 0 device found
  232. * -ENODEV no device
  233. */
  234. static int mts64_probe(struct parport *p)
  235. {
  236. u8 c;
  237. mts64_smpte_stop(p);
  238. mts64_write_command(p, MTS64_CMD_PROBE);
  239. msleep(50);
  240. c = mts64_read(p);
  241. c &= 0x00ff;
  242. if (c != MTS64_CMD_PROBE)
  243. return -ENODEV;
  244. else
  245. return 0;
  246. }
  247. /* Read byte incl. status from device
  248. *
  249. * Returns:
  250. * data in lower 8 bits and status in upper 8 bits
  251. */
  252. static u16 mts64_read(struct parport *p)
  253. {
  254. u8 data, status;
  255. mts64_device_ready(p);
  256. mts64_enable_readout(p);
  257. status = parport_read_status(p);
  258. data = mts64_read_char(p);
  259. mts64_disable_readout(p);
  260. return (status << 8) | data;
  261. }
  262. /* Read a byte from device
  263. *
  264. * Note, that readout mode has to be enabled.
  265. * readout procedure is as follows:
  266. * - Write number of the Bit to read to DATA
  267. * - Read STATUS
  268. * - Bit 5 of STATUS indicates if Bit is set
  269. *
  270. * Returns:
  271. * Byte read from device
  272. */
  273. static u8 mts64_read_char(struct parport *p)
  274. {
  275. u8 c = 0;
  276. u8 status;
  277. u8 i;
  278. for (i = 0; i < 8; ++i) {
  279. parport_write_data(p, i);
  280. c >>= 1;
  281. status = parport_read_status(p);
  282. if (status & MTS64_STAT_BIT_SET)
  283. c |= 0x80;
  284. }
  285. return c;
  286. }
  287. /* Starts SMPTE Timecode generation
  288. *
  289. * The device creates SMPTE Timecode by hardware.
  290. * 0 24 fps
  291. * 1 25 fps
  292. * 2 29.97 fps
  293. * 3 30 fps (Drop-frame)
  294. * 4 30 fps
  295. */
  296. static void mts64_smpte_start(struct parport *p,
  297. u8 hours, u8 minutes,
  298. u8 seconds, u8 frames,
  299. u8 idx)
  300. {
  301. static const u8 fps[5] = { MTS64_CMD_SMPTE_FPS_24,
  302. MTS64_CMD_SMPTE_FPS_25,
  303. MTS64_CMD_SMPTE_FPS_2997,
  304. MTS64_CMD_SMPTE_FPS_30D,
  305. MTS64_CMD_SMPTE_FPS_30 };
  306. mts64_write_command(p, MTS64_CMD_SMPTE_SET_TIME);
  307. mts64_write_command(p, frames);
  308. mts64_write_command(p, seconds);
  309. mts64_write_command(p, minutes);
  310. mts64_write_command(p, hours);
  311. mts64_write_command(p, MTS64_CMD_SMPTE_SET_FPS);
  312. mts64_write_command(p, fps[idx]);
  313. }
  314. /* Stops SMPTE Timecode generation
  315. */
  316. static void mts64_smpte_stop(struct parport *p)
  317. {
  318. mts64_write_command(p, MTS64_CMD_SMPTE_STOP);
  319. }
  320. /* Write a command byte to device
  321. */
  322. static void mts64_write_command(struct parport *p, u8 c)
  323. {
  324. mts64_device_ready(p);
  325. parport_write_data(p, c);
  326. parport_write_control(p, MTS64_CTL_WRITE_CMD);
  327. parport_write_control(p, MTS64_CTL_WRITE_CMD | MTS64_CTL_STROBE);
  328. parport_write_control(p, MTS64_CTL_WRITE_CMD);
  329. }
  330. /* Write a data byte to device
  331. */
  332. static void mts64_write_data(struct parport *p, u8 c)
  333. {
  334. mts64_device_ready(p);
  335. parport_write_data(p, c);
  336. parport_write_control(p, MTS64_CTL_WRITE_DATA);
  337. parport_write_control(p, MTS64_CTL_WRITE_DATA | MTS64_CTL_STROBE);
  338. parport_write_control(p, MTS64_CTL_WRITE_DATA);
  339. }
  340. /* Write a MIDI byte to midiport
  341. *
  342. * midiport ranges from 0-3 and maps to Ports 1-4
  343. * assumptions: communication mode is on
  344. */
  345. static void mts64_write_midi(struct mts64 *mts, u8 c,
  346. int midiport)
  347. {
  348. struct parport *p = mts->pardev->port;
  349. /* check current midiport */
  350. if (mts->current_midi_output_port != midiport)
  351. mts64_write_command(p, midiport);
  352. /* write midi byte */
  353. mts64_write_data(p, c);
  354. }
  355. /*********************************************************************
  356. * Control elements
  357. *********************************************************************/
  358. /* SMPTE Switch */
  359. #define snd_mts64_ctl_smpte_switch_info snd_ctl_boolean_mono_info
  360. static int snd_mts64_ctl_smpte_switch_get(struct snd_kcontrol* kctl,
  361. struct snd_ctl_elem_value *uctl)
  362. {
  363. struct mts64 *mts = snd_kcontrol_chip(kctl);
  364. spin_lock_irq(&mts->lock);
  365. uctl->value.integer.value[0] = mts->smpte_switch;
  366. spin_unlock_irq(&mts->lock);
  367. return 0;
  368. }
  369. /* smpte_switch is not accessed from IRQ handler, so we just need
  370. to protect the HW access */
  371. static int snd_mts64_ctl_smpte_switch_put(struct snd_kcontrol* kctl,
  372. struct snd_ctl_elem_value *uctl)
  373. {
  374. struct mts64 *mts = snd_kcontrol_chip(kctl);
  375. int changed = 0;
  376. int val = !!uctl->value.integer.value[0];
  377. spin_lock_irq(&mts->lock);
  378. if (mts->smpte_switch == val)
  379. goto __out;
  380. changed = 1;
  381. mts->smpte_switch = val;
  382. if (mts->smpte_switch) {
  383. mts64_smpte_start(mts->pardev->port,
  384. mts->time[0], mts->time[1],
  385. mts->time[2], mts->time[3],
  386. mts->fps);
  387. } else {
  388. mts64_smpte_stop(mts->pardev->port);
  389. }
  390. __out:
  391. spin_unlock_irq(&mts->lock);
  392. return changed;
  393. }
  394. static const struct snd_kcontrol_new mts64_ctl_smpte_switch = {
  395. .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
  396. .name = "SMPTE Playback Switch",
  397. .index = 0,
  398. .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
  399. .private_value = 0,
  400. .info = snd_mts64_ctl_smpte_switch_info,
  401. .get = snd_mts64_ctl_smpte_switch_get,
  402. .put = snd_mts64_ctl_smpte_switch_put
  403. };
  404. /* Time */
  405. static int snd_mts64_ctl_smpte_time_h_info(struct snd_kcontrol *kctl,
  406. struct snd_ctl_elem_info *uinfo)
  407. {
  408. uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
  409. uinfo->count = 1;
  410. uinfo->value.integer.min = 0;
  411. uinfo->value.integer.max = 23;
  412. return 0;
  413. }
  414. static int snd_mts64_ctl_smpte_time_f_info(struct snd_kcontrol *kctl,
  415. struct snd_ctl_elem_info *uinfo)
  416. {
  417. uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
  418. uinfo->count = 1;
  419. uinfo->value.integer.min = 0;
  420. uinfo->value.integer.max = 99;
  421. return 0;
  422. }
  423. static int snd_mts64_ctl_smpte_time_info(struct snd_kcontrol *kctl,
  424. struct snd_ctl_elem_info *uinfo)
  425. {
  426. uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
  427. uinfo->count = 1;
  428. uinfo->value.integer.min = 0;
  429. uinfo->value.integer.max = 59;
  430. return 0;
  431. }
  432. static int snd_mts64_ctl_smpte_time_get(struct snd_kcontrol *kctl,
  433. struct snd_ctl_elem_value *uctl)
  434. {
  435. struct mts64 *mts = snd_kcontrol_chip(kctl);
  436. int idx = kctl->private_value;
  437. spin_lock_irq(&mts->lock);
  438. uctl->value.integer.value[0] = mts->time[idx];
  439. spin_unlock_irq(&mts->lock);
  440. return 0;
  441. }
  442. static int snd_mts64_ctl_smpte_time_put(struct snd_kcontrol *kctl,
  443. struct snd_ctl_elem_value *uctl)
  444. {
  445. struct mts64 *mts = snd_kcontrol_chip(kctl);
  446. int idx = kctl->private_value;
  447. unsigned int time = uctl->value.integer.value[0] % 60;
  448. int changed = 0;
  449. spin_lock_irq(&mts->lock);
  450. if (mts->time[idx] != time) {
  451. changed = 1;
  452. mts->time[idx] = time;
  453. }
  454. spin_unlock_irq(&mts->lock);
  455. return changed;
  456. }
  457. static const struct snd_kcontrol_new mts64_ctl_smpte_time_hours = {
  458. .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
  459. .name = "SMPTE Time Hours",
  460. .index = 0,
  461. .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
  462. .private_value = 0,
  463. .info = snd_mts64_ctl_smpte_time_h_info,
  464. .get = snd_mts64_ctl_smpte_time_get,
  465. .put = snd_mts64_ctl_smpte_time_put
  466. };
  467. static const struct snd_kcontrol_new mts64_ctl_smpte_time_minutes = {
  468. .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
  469. .name = "SMPTE Time Minutes",
  470. .index = 0,
  471. .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
  472. .private_value = 1,
  473. .info = snd_mts64_ctl_smpte_time_info,
  474. .get = snd_mts64_ctl_smpte_time_get,
  475. .put = snd_mts64_ctl_smpte_time_put
  476. };
  477. static const struct snd_kcontrol_new mts64_ctl_smpte_time_seconds = {
  478. .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
  479. .name = "SMPTE Time Seconds",
  480. .index = 0,
  481. .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
  482. .private_value = 2,
  483. .info = snd_mts64_ctl_smpte_time_info,
  484. .get = snd_mts64_ctl_smpte_time_get,
  485. .put = snd_mts64_ctl_smpte_time_put
  486. };
  487. static const struct snd_kcontrol_new mts64_ctl_smpte_time_frames = {
  488. .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
  489. .name = "SMPTE Time Frames",
  490. .index = 0,
  491. .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
  492. .private_value = 3,
  493. .info = snd_mts64_ctl_smpte_time_f_info,
  494. .get = snd_mts64_ctl_smpte_time_get,
  495. .put = snd_mts64_ctl_smpte_time_put
  496. };
  497. /* FPS */
  498. static int snd_mts64_ctl_smpte_fps_info(struct snd_kcontrol *kctl,
  499. struct snd_ctl_elem_info *uinfo)
  500. {
  501. static const char * const texts[5] = {
  502. "24", "25", "29.97", "30D", "30"
  503. };
  504. return snd_ctl_enum_info(uinfo, 1, 5, texts);
  505. }
  506. static int snd_mts64_ctl_smpte_fps_get(struct snd_kcontrol *kctl,
  507. struct snd_ctl_elem_value *uctl)
  508. {
  509. struct mts64 *mts = snd_kcontrol_chip(kctl);
  510. spin_lock_irq(&mts->lock);
  511. uctl->value.enumerated.item[0] = mts->fps;
  512. spin_unlock_irq(&mts->lock);
  513. return 0;
  514. }
  515. static int snd_mts64_ctl_smpte_fps_put(struct snd_kcontrol *kctl,
  516. struct snd_ctl_elem_value *uctl)
  517. {
  518. struct mts64 *mts = snd_kcontrol_chip(kctl);
  519. int changed = 0;
  520. if (uctl->value.enumerated.item[0] >= 5)
  521. return -EINVAL;
  522. spin_lock_irq(&mts->lock);
  523. if (mts->fps != uctl->value.enumerated.item[0]) {
  524. changed = 1;
  525. mts->fps = uctl->value.enumerated.item[0];
  526. }
  527. spin_unlock_irq(&mts->lock);
  528. return changed;
  529. }
  530. static const struct snd_kcontrol_new mts64_ctl_smpte_fps = {
  531. .iface = SNDRV_CTL_ELEM_IFACE_RAWMIDI,
  532. .name = "SMPTE Fps",
  533. .index = 0,
  534. .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
  535. .private_value = 0,
  536. .info = snd_mts64_ctl_smpte_fps_info,
  537. .get = snd_mts64_ctl_smpte_fps_get,
  538. .put = snd_mts64_ctl_smpte_fps_put
  539. };
  540. static int snd_mts64_ctl_create(struct snd_card *card,
  541. struct mts64 *mts)
  542. {
  543. int err, i;
  544. static const struct snd_kcontrol_new *control[] = {
  545. &mts64_ctl_smpte_switch,
  546. &mts64_ctl_smpte_time_hours,
  547. &mts64_ctl_smpte_time_minutes,
  548. &mts64_ctl_smpte_time_seconds,
  549. &mts64_ctl_smpte_time_frames,
  550. &mts64_ctl_smpte_fps,
  551. NULL };
  552. for (i = 0; control[i]; ++i) {
  553. err = snd_ctl_add(card, snd_ctl_new1(control[i], mts));
  554. if (err < 0) {
  555. snd_printd("Cannot create control: %s\n",
  556. control[i]->name);
  557. return err;
  558. }
  559. }
  560. return 0;
  561. }
  562. /*********************************************************************
  563. * Rawmidi
  564. *********************************************************************/
  565. #define MTS64_MODE_INPUT_TRIGGERED 0x01
  566. static int snd_mts64_rawmidi_open(struct snd_rawmidi_substream *substream)
  567. {
  568. struct mts64 *mts = substream->rmidi->private_data;
  569. if (mts->open_count == 0) {
  570. /* We don't need a spinlock here, because this is just called
  571. if the device has not been opened before.
  572. So there aren't any IRQs from the device */
  573. mts64_device_open(mts);
  574. msleep(50);
  575. }
  576. ++(mts->open_count);
  577. return 0;
  578. }
  579. static int snd_mts64_rawmidi_close(struct snd_rawmidi_substream *substream)
  580. {
  581. struct mts64 *mts = substream->rmidi->private_data;
  582. unsigned long flags;
  583. --(mts->open_count);
  584. if (mts->open_count == 0) {
  585. /* We need the spinlock_irqsave here because we can still
  586. have IRQs at this point */
  587. spin_lock_irqsave(&mts->lock, flags);
  588. mts64_device_close(mts);
  589. spin_unlock_irqrestore(&mts->lock, flags);
  590. msleep(500);
  591. } else if (mts->open_count < 0)
  592. mts->open_count = 0;
  593. return 0;
  594. }
  595. static void snd_mts64_rawmidi_output_trigger(struct snd_rawmidi_substream *substream,
  596. int up)
  597. {
  598. struct mts64 *mts = substream->rmidi->private_data;
  599. u8 data;
  600. unsigned long flags;
  601. spin_lock_irqsave(&mts->lock, flags);
  602. while (snd_rawmidi_transmit_peek(substream, &data, 1) == 1) {
  603. mts64_write_midi(mts, data, substream->number+1);
  604. snd_rawmidi_transmit_ack(substream, 1);
  605. }
  606. spin_unlock_irqrestore(&mts->lock, flags);
  607. }
  608. static void snd_mts64_rawmidi_input_trigger(struct snd_rawmidi_substream *substream,
  609. int up)
  610. {
  611. struct mts64 *mts = substream->rmidi->private_data;
  612. unsigned long flags;
  613. spin_lock_irqsave(&mts->lock, flags);
  614. if (up)
  615. mts->mode[substream->number] |= MTS64_MODE_INPUT_TRIGGERED;
  616. else
  617. mts->mode[substream->number] &= ~MTS64_MODE_INPUT_TRIGGERED;
  618. spin_unlock_irqrestore(&mts->lock, flags);
  619. }
  620. static const struct snd_rawmidi_ops snd_mts64_rawmidi_output_ops = {
  621. .open = snd_mts64_rawmidi_open,
  622. .close = snd_mts64_rawmidi_close,
  623. .trigger = snd_mts64_rawmidi_output_trigger
  624. };
  625. static const struct snd_rawmidi_ops snd_mts64_rawmidi_input_ops = {
  626. .open = snd_mts64_rawmidi_open,
  627. .close = snd_mts64_rawmidi_close,
  628. .trigger = snd_mts64_rawmidi_input_trigger
  629. };
  630. /* Create and initialize the rawmidi component */
  631. static int snd_mts64_rawmidi_create(struct snd_card *card)
  632. {
  633. struct mts64 *mts = card->private_data;
  634. struct snd_rawmidi *rmidi;
  635. struct snd_rawmidi_substream *substream;
  636. struct list_head *list;
  637. int err;
  638. err = snd_rawmidi_new(card, CARD_NAME, 0,
  639. MTS64_NUM_OUTPUT_PORTS,
  640. MTS64_NUM_INPUT_PORTS,
  641. &rmidi);
  642. if (err < 0)
  643. return err;
  644. rmidi->private_data = mts;
  645. strcpy(rmidi->name, CARD_NAME);
  646. rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
  647. SNDRV_RAWMIDI_INFO_INPUT |
  648. SNDRV_RAWMIDI_INFO_DUPLEX;
  649. mts->rmidi = rmidi;
  650. /* register rawmidi ops */
  651. snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT,
  652. &snd_mts64_rawmidi_output_ops);
  653. snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT,
  654. &snd_mts64_rawmidi_input_ops);
  655. /* name substreams */
  656. /* output */
  657. list_for_each(list,
  658. &rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT].substreams) {
  659. substream = list_entry(list, struct snd_rawmidi_substream, list);
  660. sprintf(substream->name,
  661. "Miditerminal %d", substream->number+1);
  662. }
  663. /* input */
  664. list_for_each(list,
  665. &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT].substreams) {
  666. substream = list_entry(list, struct snd_rawmidi_substream, list);
  667. mts->midi_input_substream[substream->number] = substream;
  668. switch(substream->number) {
  669. case MTS64_SMPTE_SUBSTREAM:
  670. strcpy(substream->name, "Miditerminal SMPTE");
  671. break;
  672. default:
  673. sprintf(substream->name,
  674. "Miditerminal %d", substream->number+1);
  675. }
  676. }
  677. /* controls */
  678. err = snd_mts64_ctl_create(card, mts);
  679. return err;
  680. }
  681. /*********************************************************************
  682. * parport stuff
  683. *********************************************************************/
  684. static void snd_mts64_interrupt(void *private)
  685. {
  686. struct mts64 *mts = ((struct snd_card*)private)->private_data;
  687. u16 ret;
  688. u8 status, data;
  689. struct snd_rawmidi_substream *substream;
  690. spin_lock(&mts->lock);
  691. ret = mts64_read(mts->pardev->port);
  692. data = ret & 0x00ff;
  693. status = ret >> 8;
  694. if (status & MTS64_STAT_PORT) {
  695. mts->current_midi_input_port = mts64_map_midi_input(data);
  696. } else {
  697. if (mts->current_midi_input_port == -1)
  698. goto __out;
  699. substream = mts->midi_input_substream[mts->current_midi_input_port];
  700. if (mts->mode[substream->number] & MTS64_MODE_INPUT_TRIGGERED)
  701. snd_rawmidi_receive(substream, &data, 1);
  702. }
  703. __out:
  704. spin_unlock(&mts->lock);
  705. }
  706. static void snd_mts64_attach(struct parport *p)
  707. {
  708. struct platform_device *device;
  709. device = platform_device_alloc(PLATFORM_DRIVER, device_count);
  710. if (!device)
  711. return;
  712. /* Temporary assignment to forward the parport */
  713. platform_set_drvdata(device, p);
  714. if (platform_device_add(device) < 0) {
  715. platform_device_put(device);
  716. return;
  717. }
  718. /* Since we dont get the return value of probe
  719. * We need to check if device probing succeeded or not */
  720. if (!platform_get_drvdata(device)) {
  721. platform_device_unregister(device);
  722. return;
  723. }
  724. /* register device in global table */
  725. platform_devices[device_count] = device;
  726. device_count++;
  727. }
  728. static void snd_mts64_detach(struct parport *p)
  729. {
  730. /* nothing to do here */
  731. }
  732. static int snd_mts64_dev_probe(struct pardevice *pardev)
  733. {
  734. if (strcmp(pardev->name, DRIVER_NAME))
  735. return -ENODEV;
  736. return 0;
  737. }
  738. static struct parport_driver mts64_parport_driver = {
  739. .name = "mts64",
  740. .probe = snd_mts64_dev_probe,
  741. .match_port = snd_mts64_attach,
  742. .detach = snd_mts64_detach,
  743. .devmodel = true,
  744. };
  745. /*********************************************************************
  746. * platform stuff
  747. *********************************************************************/
  748. static void snd_mts64_card_private_free(struct snd_card *card)
  749. {
  750. struct mts64 *mts = card->private_data;
  751. struct pardevice *pardev = mts->pardev;
  752. if (pardev) {
  753. parport_release(pardev);
  754. parport_unregister_device(pardev);
  755. }
  756. snd_mts64_free(mts);
  757. }
  758. static int snd_mts64_probe(struct platform_device *pdev)
  759. {
  760. struct pardevice *pardev;
  761. struct parport *p;
  762. int dev = pdev->id;
  763. struct snd_card *card = NULL;
  764. struct mts64 *mts = NULL;
  765. int err;
  766. struct pardev_cb mts64_cb = {
  767. .preempt = NULL,
  768. .wakeup = NULL,
  769. .irq_func = snd_mts64_interrupt, /* ISR */
  770. .flags = PARPORT_DEV_EXCL, /* flags */
  771. };
  772. p = platform_get_drvdata(pdev);
  773. platform_set_drvdata(pdev, NULL);
  774. if (dev >= SNDRV_CARDS)
  775. return -ENODEV;
  776. if (!enable[dev])
  777. return -ENOENT;
  778. err = snd_card_new(&pdev->dev, index[dev], id[dev], THIS_MODULE,
  779. 0, &card);
  780. if (err < 0) {
  781. snd_printd("Cannot create card\n");
  782. return err;
  783. }
  784. strcpy(card->driver, DRIVER_NAME);
  785. strcpy(card->shortname, "ESI " CARD_NAME);
  786. sprintf(card->longname, "%s at 0x%lx, irq %i",
  787. card->shortname, p->base, p->irq);
  788. mts64_cb.private = card; /* private */
  789. pardev = parport_register_dev_model(p, /* port */
  790. DRIVER_NAME, /* name */
  791. &mts64_cb, /* callbacks */
  792. pdev->id); /* device number */
  793. if (!pardev) {
  794. snd_printd("Cannot register pardevice\n");
  795. err = -EIO;
  796. goto __err;
  797. }
  798. /* claim parport */
  799. if (parport_claim(pardev)) {
  800. snd_printd("Cannot claim parport 0x%lx\n", pardev->port->base);
  801. err = -EIO;
  802. goto free_pardev;
  803. }
  804. if ((err = snd_mts64_create(card, pardev, &mts)) < 0) {
  805. snd_printd("Cannot create main component\n");
  806. goto release_pardev;
  807. }
  808. card->private_data = mts;
  809. card->private_free = snd_mts64_card_private_free;
  810. err = mts64_probe(p);
  811. if (err) {
  812. err = -EIO;
  813. goto __err;
  814. }
  815. if ((err = snd_mts64_rawmidi_create(card)) < 0) {
  816. snd_printd("Creating Rawmidi component failed\n");
  817. goto __err;
  818. }
  819. /* init device */
  820. if ((err = mts64_device_init(p)) < 0)
  821. goto __err;
  822. platform_set_drvdata(pdev, card);
  823. /* At this point card will be usable */
  824. if ((err = snd_card_register(card)) < 0) {
  825. snd_printd("Cannot register card\n");
  826. goto __err;
  827. }
  828. snd_printk(KERN_INFO "ESI Miditerminal 4140 on 0x%lx\n", p->base);
  829. return 0;
  830. release_pardev:
  831. parport_release(pardev);
  832. free_pardev:
  833. parport_unregister_device(pardev);
  834. __err:
  835. snd_card_free(card);
  836. return err;
  837. }
  838. static int snd_mts64_remove(struct platform_device *pdev)
  839. {
  840. struct snd_card *card = platform_get_drvdata(pdev);
  841. if (card)
  842. snd_card_free(card);
  843. return 0;
  844. }
  845. static struct platform_driver snd_mts64_driver = {
  846. .probe = snd_mts64_probe,
  847. .remove = snd_mts64_remove,
  848. .driver = {
  849. .name = PLATFORM_DRIVER,
  850. }
  851. };
  852. /*********************************************************************
  853. * module init stuff
  854. *********************************************************************/
  855. static void snd_mts64_unregister_all(void)
  856. {
  857. int i;
  858. for (i = 0; i < SNDRV_CARDS; ++i) {
  859. if (platform_devices[i]) {
  860. platform_device_unregister(platform_devices[i]);
  861. platform_devices[i] = NULL;
  862. }
  863. }
  864. platform_driver_unregister(&snd_mts64_driver);
  865. parport_unregister_driver(&mts64_parport_driver);
  866. }
  867. static int __init snd_mts64_module_init(void)
  868. {
  869. int err;
  870. if ((err = platform_driver_register(&snd_mts64_driver)) < 0)
  871. return err;
  872. if (parport_register_driver(&mts64_parport_driver) != 0) {
  873. platform_driver_unregister(&snd_mts64_driver);
  874. return -EIO;
  875. }
  876. if (device_count == 0) {
  877. snd_mts64_unregister_all();
  878. return -ENODEV;
  879. }
  880. return 0;
  881. }
  882. static void __exit snd_mts64_module_exit(void)
  883. {
  884. snd_mts64_unregister_all();
  885. }
  886. module_init(snd_mts64_module_init);
  887. module_exit(snd_mts64_module_exit);