fintek-cir.c 18 KB

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  1. /*
  2. * Driver for Feature Integration Technology Inc. (aka Fintek) LPC CIR
  3. *
  4. * Copyright (C) 2011 Jarod Wilson <jarod@redhat.com>
  5. *
  6. * Special thanks to Fintek for providing hardware and spec sheets.
  7. * This driver is based upon the nuvoton, ite and ene drivers for
  8. * similar hardware.
  9. *
  10. * This program is free software; you can redistribute it and/or
  11. * modify it under the terms of the GNU General Public License as
  12. * published by the Free Software Foundation; either version 2 of the
  13. * License, or (at your option) any later version.
  14. *
  15. * This program is distributed in the hope that it will be useful, but
  16. * WITHOUT ANY WARRANTY; without even the implied warranty of
  17. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18. * 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
  23. * USA
  24. */
  25. #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  26. #include <linux/kernel.h>
  27. #include <linux/module.h>
  28. #include <linux/pnp.h>
  29. #include <linux/io.h>
  30. #include <linux/interrupt.h>
  31. #include <linux/sched.h>
  32. #include <linux/slab.h>
  33. #include <media/rc-core.h>
  34. #include "fintek-cir.h"
  35. /* write val to config reg */
  36. static inline void fintek_cr_write(struct fintek_dev *fintek, u8 val, u8 reg)
  37. {
  38. fit_dbg("%s: reg 0x%02x, val 0x%02x (ip/dp: %02x/%02x)",
  39. __func__, reg, val, fintek->cr_ip, fintek->cr_dp);
  40. outb(reg, fintek->cr_ip);
  41. outb(val, fintek->cr_dp);
  42. }
  43. /* read val from config reg */
  44. static inline u8 fintek_cr_read(struct fintek_dev *fintek, u8 reg)
  45. {
  46. u8 val;
  47. outb(reg, fintek->cr_ip);
  48. val = inb(fintek->cr_dp);
  49. fit_dbg("%s: reg 0x%02x, val 0x%02x (ip/dp: %02x/%02x)",
  50. __func__, reg, val, fintek->cr_ip, fintek->cr_dp);
  51. return val;
  52. }
  53. /* update config register bit without changing other bits */
  54. static inline void fintek_set_reg_bit(struct fintek_dev *fintek, u8 val, u8 reg)
  55. {
  56. u8 tmp = fintek_cr_read(fintek, reg) | val;
  57. fintek_cr_write(fintek, tmp, reg);
  58. }
  59. /* clear config register bit without changing other bits */
  60. static inline void fintek_clear_reg_bit(struct fintek_dev *fintek, u8 val, u8 reg)
  61. {
  62. u8 tmp = fintek_cr_read(fintek, reg) & ~val;
  63. fintek_cr_write(fintek, tmp, reg);
  64. }
  65. /* enter config mode */
  66. static inline void fintek_config_mode_enable(struct fintek_dev *fintek)
  67. {
  68. /* Enabling Config Mode explicitly requires writing 2x */
  69. outb(CONFIG_REG_ENABLE, fintek->cr_ip);
  70. outb(CONFIG_REG_ENABLE, fintek->cr_ip);
  71. }
  72. /* exit config mode */
  73. static inline void fintek_config_mode_disable(struct fintek_dev *fintek)
  74. {
  75. outb(CONFIG_REG_DISABLE, fintek->cr_ip);
  76. }
  77. /*
  78. * When you want to address a specific logical device, write its logical
  79. * device number to GCR_LOGICAL_DEV_NO
  80. */
  81. static inline void fintek_select_logical_dev(struct fintek_dev *fintek, u8 ldev)
  82. {
  83. fintek_cr_write(fintek, ldev, GCR_LOGICAL_DEV_NO);
  84. }
  85. /* write val to cir config register */
  86. static inline void fintek_cir_reg_write(struct fintek_dev *fintek, u8 val, u8 offset)
  87. {
  88. outb(val, fintek->cir_addr + offset);
  89. }
  90. /* read val from cir config register */
  91. static u8 fintek_cir_reg_read(struct fintek_dev *fintek, u8 offset)
  92. {
  93. return inb(fintek->cir_addr + offset);
  94. }
  95. /* dump current cir register contents */
  96. static void cir_dump_regs(struct fintek_dev *fintek)
  97. {
  98. fintek_config_mode_enable(fintek);
  99. fintek_select_logical_dev(fintek, fintek->logical_dev_cir);
  100. pr_info("%s: Dump CIR logical device registers:\n", FINTEK_DRIVER_NAME);
  101. pr_info(" * CR CIR BASE ADDR: 0x%x\n",
  102. (fintek_cr_read(fintek, CIR_CR_BASE_ADDR_HI) << 8) |
  103. fintek_cr_read(fintek, CIR_CR_BASE_ADDR_LO));
  104. pr_info(" * CR CIR IRQ NUM: 0x%x\n",
  105. fintek_cr_read(fintek, CIR_CR_IRQ_SEL));
  106. fintek_config_mode_disable(fintek);
  107. pr_info("%s: Dump CIR registers:\n", FINTEK_DRIVER_NAME);
  108. pr_info(" * STATUS: 0x%x\n",
  109. fintek_cir_reg_read(fintek, CIR_STATUS));
  110. pr_info(" * CONTROL: 0x%x\n",
  111. fintek_cir_reg_read(fintek, CIR_CONTROL));
  112. pr_info(" * RX_DATA: 0x%x\n",
  113. fintek_cir_reg_read(fintek, CIR_RX_DATA));
  114. pr_info(" * TX_CONTROL: 0x%x\n",
  115. fintek_cir_reg_read(fintek, CIR_TX_CONTROL));
  116. pr_info(" * TX_DATA: 0x%x\n",
  117. fintek_cir_reg_read(fintek, CIR_TX_DATA));
  118. }
  119. /* detect hardware features */
  120. static int fintek_hw_detect(struct fintek_dev *fintek)
  121. {
  122. unsigned long flags;
  123. u8 chip_major, chip_minor;
  124. u8 vendor_major, vendor_minor;
  125. u8 portsel, ir_class;
  126. u16 vendor, chip;
  127. fintek_config_mode_enable(fintek);
  128. /* Check if we're using config port 0x4e or 0x2e */
  129. portsel = fintek_cr_read(fintek, GCR_CONFIG_PORT_SEL);
  130. if (portsel == 0xff) {
  131. fit_pr(KERN_INFO, "first portsel read was bunk, trying alt");
  132. fintek_config_mode_disable(fintek);
  133. fintek->cr_ip = CR_INDEX_PORT2;
  134. fintek->cr_dp = CR_DATA_PORT2;
  135. fintek_config_mode_enable(fintek);
  136. portsel = fintek_cr_read(fintek, GCR_CONFIG_PORT_SEL);
  137. }
  138. fit_dbg("portsel reg: 0x%02x", portsel);
  139. ir_class = fintek_cir_reg_read(fintek, CIR_CR_CLASS);
  140. fit_dbg("ir_class reg: 0x%02x", ir_class);
  141. switch (ir_class) {
  142. case CLASS_RX_2TX:
  143. case CLASS_RX_1TX:
  144. fintek->hw_tx_capable = true;
  145. break;
  146. case CLASS_RX_ONLY:
  147. default:
  148. fintek->hw_tx_capable = false;
  149. break;
  150. }
  151. chip_major = fintek_cr_read(fintek, GCR_CHIP_ID_HI);
  152. chip_minor = fintek_cr_read(fintek, GCR_CHIP_ID_LO);
  153. chip = chip_major << 8 | chip_minor;
  154. vendor_major = fintek_cr_read(fintek, GCR_VENDOR_ID_HI);
  155. vendor_minor = fintek_cr_read(fintek, GCR_VENDOR_ID_LO);
  156. vendor = vendor_major << 8 | vendor_minor;
  157. if (vendor != VENDOR_ID_FINTEK)
  158. fit_pr(KERN_WARNING, "Unknown vendor ID: 0x%04x", vendor);
  159. else
  160. fit_dbg("Read Fintek vendor ID from chip");
  161. fintek_config_mode_disable(fintek);
  162. spin_lock_irqsave(&fintek->fintek_lock, flags);
  163. fintek->chip_major = chip_major;
  164. fintek->chip_minor = chip_minor;
  165. fintek->chip_vendor = vendor;
  166. /*
  167. * Newer reviews of this chipset uses port 8 instead of 5
  168. */
  169. if ((chip != 0x0408) && (chip != 0x0804))
  170. fintek->logical_dev_cir = LOGICAL_DEV_CIR_REV2;
  171. else
  172. fintek->logical_dev_cir = LOGICAL_DEV_CIR_REV1;
  173. spin_unlock_irqrestore(&fintek->fintek_lock, flags);
  174. return 0;
  175. }
  176. static void fintek_cir_ldev_init(struct fintek_dev *fintek)
  177. {
  178. /* Select CIR logical device and enable */
  179. fintek_select_logical_dev(fintek, fintek->logical_dev_cir);
  180. fintek_cr_write(fintek, LOGICAL_DEV_ENABLE, CIR_CR_DEV_EN);
  181. /* Write allocated CIR address and IRQ information to hardware */
  182. fintek_cr_write(fintek, fintek->cir_addr >> 8, CIR_CR_BASE_ADDR_HI);
  183. fintek_cr_write(fintek, fintek->cir_addr & 0xff, CIR_CR_BASE_ADDR_LO);
  184. fintek_cr_write(fintek, fintek->cir_irq, CIR_CR_IRQ_SEL);
  185. fit_dbg("CIR initialized, base io address: 0x%lx, irq: %d (len: %d)",
  186. fintek->cir_addr, fintek->cir_irq, fintek->cir_port_len);
  187. }
  188. /* enable CIR interrupts */
  189. static void fintek_enable_cir_irq(struct fintek_dev *fintek)
  190. {
  191. fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_EN, CIR_STATUS);
  192. }
  193. static void fintek_cir_regs_init(struct fintek_dev *fintek)
  194. {
  195. /* clear any and all stray interrupts */
  196. fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS);
  197. /* and finally, enable interrupts */
  198. fintek_enable_cir_irq(fintek);
  199. }
  200. static void fintek_enable_wake(struct fintek_dev *fintek)
  201. {
  202. fintek_config_mode_enable(fintek);
  203. fintek_select_logical_dev(fintek, LOGICAL_DEV_ACPI);
  204. /* Allow CIR PME's to wake system */
  205. fintek_set_reg_bit(fintek, ACPI_WAKE_EN_CIR_BIT, LDEV_ACPI_WAKE_EN_REG);
  206. /* Enable CIR PME's */
  207. fintek_set_reg_bit(fintek, ACPI_PME_CIR_BIT, LDEV_ACPI_PME_EN_REG);
  208. /* Clear CIR PME status register */
  209. fintek_set_reg_bit(fintek, ACPI_PME_CIR_BIT, LDEV_ACPI_PME_CLR_REG);
  210. /* Save state */
  211. fintek_set_reg_bit(fintek, ACPI_STATE_CIR_BIT, LDEV_ACPI_STATE_REG);
  212. fintek_config_mode_disable(fintek);
  213. }
  214. static int fintek_cmdsize(u8 cmd, u8 subcmd)
  215. {
  216. int datasize = 0;
  217. switch (cmd) {
  218. case BUF_COMMAND_NULL:
  219. if (subcmd == BUF_HW_CMD_HEADER)
  220. datasize = 1;
  221. break;
  222. case BUF_HW_CMD_HEADER:
  223. if (subcmd == BUF_CMD_G_REVISION)
  224. datasize = 2;
  225. break;
  226. case BUF_COMMAND_HEADER:
  227. switch (subcmd) {
  228. case BUF_CMD_S_CARRIER:
  229. case BUF_CMD_S_TIMEOUT:
  230. case BUF_RSP_PULSE_COUNT:
  231. datasize = 2;
  232. break;
  233. case BUF_CMD_SIG_END:
  234. case BUF_CMD_S_TXMASK:
  235. case BUF_CMD_S_RXSENSOR:
  236. datasize = 1;
  237. break;
  238. }
  239. }
  240. return datasize;
  241. }
  242. /* process ir data stored in driver buffer */
  243. static void fintek_process_rx_ir_data(struct fintek_dev *fintek)
  244. {
  245. DEFINE_IR_RAW_EVENT(rawir);
  246. u8 sample;
  247. bool event = false;
  248. int i;
  249. for (i = 0; i < fintek->pkts; i++) {
  250. sample = fintek->buf[i];
  251. switch (fintek->parser_state) {
  252. case CMD_HEADER:
  253. fintek->cmd = sample;
  254. if ((fintek->cmd == BUF_COMMAND_HEADER) ||
  255. ((fintek->cmd & BUF_COMMAND_MASK) !=
  256. BUF_PULSE_BIT)) {
  257. fintek->parser_state = SUBCMD;
  258. continue;
  259. }
  260. fintek->rem = (fintek->cmd & BUF_LEN_MASK);
  261. fit_dbg("%s: rem: 0x%02x", __func__, fintek->rem);
  262. if (fintek->rem)
  263. fintek->parser_state = PARSE_IRDATA;
  264. else
  265. ir_raw_event_reset(fintek->rdev);
  266. break;
  267. case SUBCMD:
  268. fintek->rem = fintek_cmdsize(fintek->cmd, sample);
  269. fintek->parser_state = CMD_DATA;
  270. break;
  271. case CMD_DATA:
  272. fintek->rem--;
  273. break;
  274. case PARSE_IRDATA:
  275. fintek->rem--;
  276. init_ir_raw_event(&rawir);
  277. rawir.pulse = ((sample & BUF_PULSE_BIT) != 0);
  278. rawir.duration = US_TO_NS((sample & BUF_SAMPLE_MASK)
  279. * CIR_SAMPLE_PERIOD);
  280. fit_dbg("Storing %s with duration %d",
  281. rawir.pulse ? "pulse" : "space",
  282. rawir.duration);
  283. if (ir_raw_event_store_with_filter(fintek->rdev,
  284. &rawir))
  285. event = true;
  286. break;
  287. }
  288. if ((fintek->parser_state != CMD_HEADER) && !fintek->rem)
  289. fintek->parser_state = CMD_HEADER;
  290. }
  291. fintek->pkts = 0;
  292. if (event) {
  293. fit_dbg("Calling ir_raw_event_handle");
  294. ir_raw_event_handle(fintek->rdev);
  295. }
  296. }
  297. /* copy data from hardware rx register into driver buffer */
  298. static void fintek_get_rx_ir_data(struct fintek_dev *fintek, u8 rx_irqs)
  299. {
  300. unsigned long flags;
  301. u8 sample, status;
  302. spin_lock_irqsave(&fintek->fintek_lock, flags);
  303. /*
  304. * We must read data from CIR_RX_DATA until the hardware IR buffer
  305. * is empty and clears the RX_TIMEOUT and/or RX_RECEIVE flags in
  306. * the CIR_STATUS register
  307. */
  308. do {
  309. sample = fintek_cir_reg_read(fintek, CIR_RX_DATA);
  310. fit_dbg("%s: sample: 0x%02x", __func__, sample);
  311. fintek->buf[fintek->pkts] = sample;
  312. fintek->pkts++;
  313. status = fintek_cir_reg_read(fintek, CIR_STATUS);
  314. if (!(status & CIR_STATUS_IRQ_EN))
  315. break;
  316. } while (status & rx_irqs);
  317. fintek_process_rx_ir_data(fintek);
  318. spin_unlock_irqrestore(&fintek->fintek_lock, flags);
  319. }
  320. static void fintek_cir_log_irqs(u8 status)
  321. {
  322. fit_pr(KERN_INFO, "IRQ 0x%02x:%s%s%s%s%s", status,
  323. status & CIR_STATUS_IRQ_EN ? " IRQEN" : "",
  324. status & CIR_STATUS_TX_FINISH ? " TXF" : "",
  325. status & CIR_STATUS_TX_UNDERRUN ? " TXU" : "",
  326. status & CIR_STATUS_RX_TIMEOUT ? " RXTO" : "",
  327. status & CIR_STATUS_RX_RECEIVE ? " RXOK" : "");
  328. }
  329. /* interrupt service routine for incoming and outgoing CIR data */
  330. static irqreturn_t fintek_cir_isr(int irq, void *data)
  331. {
  332. struct fintek_dev *fintek = data;
  333. u8 status, rx_irqs;
  334. fit_dbg_verbose("%s firing", __func__);
  335. fintek_config_mode_enable(fintek);
  336. fintek_select_logical_dev(fintek, fintek->logical_dev_cir);
  337. fintek_config_mode_disable(fintek);
  338. /*
  339. * Get IR Status register contents. Write 1 to ack/clear
  340. *
  341. * bit: reg name - description
  342. * 3: TX_FINISH - TX is finished
  343. * 2: TX_UNDERRUN - TX underrun
  344. * 1: RX_TIMEOUT - RX data timeout
  345. * 0: RX_RECEIVE - RX data received
  346. */
  347. status = fintek_cir_reg_read(fintek, CIR_STATUS);
  348. if (!(status & CIR_STATUS_IRQ_MASK) || status == 0xff) {
  349. fit_dbg_verbose("%s exiting, IRSTS 0x%02x", __func__, status);
  350. fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS);
  351. return IRQ_RETVAL(IRQ_NONE);
  352. }
  353. if (debug)
  354. fintek_cir_log_irqs(status);
  355. rx_irqs = status & (CIR_STATUS_RX_RECEIVE | CIR_STATUS_RX_TIMEOUT);
  356. if (rx_irqs)
  357. fintek_get_rx_ir_data(fintek, rx_irqs);
  358. /* ack/clear all irq flags we've got */
  359. fintek_cir_reg_write(fintek, status, CIR_STATUS);
  360. fit_dbg_verbose("%s done", __func__);
  361. return IRQ_RETVAL(IRQ_HANDLED);
  362. }
  363. static void fintek_enable_cir(struct fintek_dev *fintek)
  364. {
  365. /* set IRQ enabled */
  366. fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_EN, CIR_STATUS);
  367. fintek_config_mode_enable(fintek);
  368. /* enable the CIR logical device */
  369. fintek_select_logical_dev(fintek, fintek->logical_dev_cir);
  370. fintek_cr_write(fintek, LOGICAL_DEV_ENABLE, CIR_CR_DEV_EN);
  371. fintek_config_mode_disable(fintek);
  372. /* clear all pending interrupts */
  373. fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS);
  374. /* enable interrupts */
  375. fintek_enable_cir_irq(fintek);
  376. }
  377. static void fintek_disable_cir(struct fintek_dev *fintek)
  378. {
  379. fintek_config_mode_enable(fintek);
  380. /* disable the CIR logical device */
  381. fintek_select_logical_dev(fintek, fintek->logical_dev_cir);
  382. fintek_cr_write(fintek, LOGICAL_DEV_DISABLE, CIR_CR_DEV_EN);
  383. fintek_config_mode_disable(fintek);
  384. }
  385. static int fintek_open(struct rc_dev *dev)
  386. {
  387. struct fintek_dev *fintek = dev->priv;
  388. unsigned long flags;
  389. spin_lock_irqsave(&fintek->fintek_lock, flags);
  390. fintek_enable_cir(fintek);
  391. spin_unlock_irqrestore(&fintek->fintek_lock, flags);
  392. return 0;
  393. }
  394. static void fintek_close(struct rc_dev *dev)
  395. {
  396. struct fintek_dev *fintek = dev->priv;
  397. unsigned long flags;
  398. spin_lock_irqsave(&fintek->fintek_lock, flags);
  399. fintek_disable_cir(fintek);
  400. spin_unlock_irqrestore(&fintek->fintek_lock, flags);
  401. }
  402. /* Allocate memory, probe hardware, and initialize everything */
  403. static int fintek_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
  404. {
  405. struct fintek_dev *fintek;
  406. struct rc_dev *rdev;
  407. int ret = -ENOMEM;
  408. fintek = kzalloc(sizeof(struct fintek_dev), GFP_KERNEL);
  409. if (!fintek)
  410. return ret;
  411. /* input device for IR remote (and tx) */
  412. rdev = rc_allocate_device();
  413. if (!rdev)
  414. goto exit_free_dev_rdev;
  415. ret = -ENODEV;
  416. /* validate pnp resources */
  417. if (!pnp_port_valid(pdev, 0)) {
  418. dev_err(&pdev->dev, "IR PNP Port not valid!\n");
  419. goto exit_free_dev_rdev;
  420. }
  421. if (!pnp_irq_valid(pdev, 0)) {
  422. dev_err(&pdev->dev, "IR PNP IRQ not valid!\n");
  423. goto exit_free_dev_rdev;
  424. }
  425. fintek->cir_addr = pnp_port_start(pdev, 0);
  426. fintek->cir_irq = pnp_irq(pdev, 0);
  427. fintek->cir_port_len = pnp_port_len(pdev, 0);
  428. fintek->cr_ip = CR_INDEX_PORT;
  429. fintek->cr_dp = CR_DATA_PORT;
  430. spin_lock_init(&fintek->fintek_lock);
  431. pnp_set_drvdata(pdev, fintek);
  432. fintek->pdev = pdev;
  433. ret = fintek_hw_detect(fintek);
  434. if (ret)
  435. goto exit_free_dev_rdev;
  436. /* Initialize CIR & CIR Wake Logical Devices */
  437. fintek_config_mode_enable(fintek);
  438. fintek_cir_ldev_init(fintek);
  439. fintek_config_mode_disable(fintek);
  440. /* Initialize CIR & CIR Wake Config Registers */
  441. fintek_cir_regs_init(fintek);
  442. /* Set up the rc device */
  443. rdev->priv = fintek;
  444. rdev->driver_type = RC_DRIVER_IR_RAW;
  445. rdev->allowed_protocols = RC_BIT_ALL;
  446. rdev->open = fintek_open;
  447. rdev->close = fintek_close;
  448. rdev->input_name = FINTEK_DESCRIPTION;
  449. rdev->input_phys = "fintek/cir0";
  450. rdev->input_id.bustype = BUS_HOST;
  451. rdev->input_id.vendor = VENDOR_ID_FINTEK;
  452. rdev->input_id.product = fintek->chip_major;
  453. rdev->input_id.version = fintek->chip_minor;
  454. rdev->dev.parent = &pdev->dev;
  455. rdev->driver_name = FINTEK_DRIVER_NAME;
  456. rdev->map_name = RC_MAP_RC6_MCE;
  457. rdev->timeout = US_TO_NS(1000);
  458. /* rx resolution is hardwired to 50us atm, 1, 25, 100 also possible */
  459. rdev->rx_resolution = US_TO_NS(CIR_SAMPLE_PERIOD);
  460. fintek->rdev = rdev;
  461. ret = -EBUSY;
  462. /* now claim resources */
  463. if (!request_region(fintek->cir_addr,
  464. fintek->cir_port_len, FINTEK_DRIVER_NAME))
  465. goto exit_free_dev_rdev;
  466. if (request_irq(fintek->cir_irq, fintek_cir_isr, IRQF_SHARED,
  467. FINTEK_DRIVER_NAME, (void *)fintek))
  468. goto exit_free_cir_addr;
  469. ret = rc_register_device(rdev);
  470. if (ret)
  471. goto exit_free_irq;
  472. device_init_wakeup(&pdev->dev, true);
  473. fit_pr(KERN_NOTICE, "driver has been successfully loaded\n");
  474. if (debug)
  475. cir_dump_regs(fintek);
  476. return 0;
  477. exit_free_irq:
  478. free_irq(fintek->cir_irq, fintek);
  479. exit_free_cir_addr:
  480. release_region(fintek->cir_addr, fintek->cir_port_len);
  481. exit_free_dev_rdev:
  482. rc_free_device(rdev);
  483. kfree(fintek);
  484. return ret;
  485. }
  486. static void fintek_remove(struct pnp_dev *pdev)
  487. {
  488. struct fintek_dev *fintek = pnp_get_drvdata(pdev);
  489. unsigned long flags;
  490. spin_lock_irqsave(&fintek->fintek_lock, flags);
  491. /* disable CIR */
  492. fintek_disable_cir(fintek);
  493. fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS);
  494. /* enable CIR Wake (for IR power-on) */
  495. fintek_enable_wake(fintek);
  496. spin_unlock_irqrestore(&fintek->fintek_lock, flags);
  497. /* free resources */
  498. free_irq(fintek->cir_irq, fintek);
  499. release_region(fintek->cir_addr, fintek->cir_port_len);
  500. rc_unregister_device(fintek->rdev);
  501. kfree(fintek);
  502. }
  503. static int fintek_suspend(struct pnp_dev *pdev, pm_message_t state)
  504. {
  505. struct fintek_dev *fintek = pnp_get_drvdata(pdev);
  506. unsigned long flags;
  507. fit_dbg("%s called", __func__);
  508. spin_lock_irqsave(&fintek->fintek_lock, flags);
  509. /* disable all CIR interrupts */
  510. fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS);
  511. spin_unlock_irqrestore(&fintek->fintek_lock, flags);
  512. fintek_config_mode_enable(fintek);
  513. /* disable cir logical dev */
  514. fintek_select_logical_dev(fintek, fintek->logical_dev_cir);
  515. fintek_cr_write(fintek, LOGICAL_DEV_DISABLE, CIR_CR_DEV_EN);
  516. fintek_config_mode_disable(fintek);
  517. /* make sure wake is enabled */
  518. fintek_enable_wake(fintek);
  519. return 0;
  520. }
  521. static int fintek_resume(struct pnp_dev *pdev)
  522. {
  523. struct fintek_dev *fintek = pnp_get_drvdata(pdev);
  524. fit_dbg("%s called", __func__);
  525. /* open interrupt */
  526. fintek_enable_cir_irq(fintek);
  527. /* Enable CIR logical device */
  528. fintek_config_mode_enable(fintek);
  529. fintek_select_logical_dev(fintek, fintek->logical_dev_cir);
  530. fintek_cr_write(fintek, LOGICAL_DEV_ENABLE, CIR_CR_DEV_EN);
  531. fintek_config_mode_disable(fintek);
  532. fintek_cir_regs_init(fintek);
  533. return 0;
  534. }
  535. static void fintek_shutdown(struct pnp_dev *pdev)
  536. {
  537. struct fintek_dev *fintek = pnp_get_drvdata(pdev);
  538. fintek_enable_wake(fintek);
  539. }
  540. static const struct pnp_device_id fintek_ids[] = {
  541. { "FIT0002", 0 }, /* CIR */
  542. { "", 0 },
  543. };
  544. static struct pnp_driver fintek_driver = {
  545. .name = FINTEK_DRIVER_NAME,
  546. .id_table = fintek_ids,
  547. .flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
  548. .probe = fintek_probe,
  549. .remove = fintek_remove,
  550. .suspend = fintek_suspend,
  551. .resume = fintek_resume,
  552. .shutdown = fintek_shutdown,
  553. };
  554. module_param(debug, int, S_IRUGO | S_IWUSR);
  555. MODULE_PARM_DESC(debug, "Enable debugging output");
  556. MODULE_DEVICE_TABLE(pnp, fintek_ids);
  557. MODULE_DESCRIPTION(FINTEK_DESCRIPTION " driver");
  558. MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
  559. MODULE_LICENSE("GPL");
  560. module_pnp_driver(fintek_driver);