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9bdc79ea JW |
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 | ||
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 <linux/pci_ids.h> | |
35 | ||
36 | #include "fintek-cir.h" | |
37 | ||
38 | /* write val to config reg */ | |
39 | static inline void fintek_cr_write(struct fintek_dev *fintek, u8 val, u8 reg) | |
40 | { | |
41 | fit_dbg("%s: reg 0x%02x, val 0x%02x (ip/dp: %02x/%02x)", | |
42 | __func__, reg, val, fintek->cr_ip, fintek->cr_dp); | |
43 | outb(reg, fintek->cr_ip); | |
44 | outb(val, fintek->cr_dp); | |
45 | } | |
46 | ||
47 | /* read val from config reg */ | |
48 | static inline u8 fintek_cr_read(struct fintek_dev *fintek, u8 reg) | |
49 | { | |
50 | u8 val; | |
51 | ||
52 | outb(reg, fintek->cr_ip); | |
53 | val = inb(fintek->cr_dp); | |
54 | ||
55 | fit_dbg("%s: reg 0x%02x, val 0x%02x (ip/dp: %02x/%02x)", | |
56 | __func__, reg, val, fintek->cr_ip, fintek->cr_dp); | |
57 | return val; | |
58 | } | |
59 | ||
60 | /* update config register bit without changing other bits */ | |
61 | static inline void fintek_set_reg_bit(struct fintek_dev *fintek, u8 val, u8 reg) | |
62 | { | |
63 | u8 tmp = fintek_cr_read(fintek, reg) | val; | |
64 | fintek_cr_write(fintek, tmp, reg); | |
65 | } | |
66 | ||
67 | /* clear config register bit without changing other bits */ | |
68 | static inline void fintek_clear_reg_bit(struct fintek_dev *fintek, u8 val, u8 reg) | |
69 | { | |
70 | u8 tmp = fintek_cr_read(fintek, reg) & ~val; | |
71 | fintek_cr_write(fintek, tmp, reg); | |
72 | } | |
73 | ||
74 | /* enter config mode */ | |
75 | static inline void fintek_config_mode_enable(struct fintek_dev *fintek) | |
76 | { | |
77 | /* Enabling Config Mode explicitly requires writing 2x */ | |
78 | outb(CONFIG_REG_ENABLE, fintek->cr_ip); | |
79 | outb(CONFIG_REG_ENABLE, fintek->cr_ip); | |
80 | } | |
81 | ||
82 | /* exit config mode */ | |
83 | static inline void fintek_config_mode_disable(struct fintek_dev *fintek) | |
84 | { | |
85 | outb(CONFIG_REG_DISABLE, fintek->cr_ip); | |
86 | } | |
87 | ||
88 | /* | |
89 | * When you want to address a specific logical device, write its logical | |
90 | * device number to GCR_LOGICAL_DEV_NO | |
91 | */ | |
92 | static inline void fintek_select_logical_dev(struct fintek_dev *fintek, u8 ldev) | |
93 | { | |
94 | fintek_cr_write(fintek, ldev, GCR_LOGICAL_DEV_NO); | |
95 | } | |
96 | ||
97 | /* write val to cir config register */ | |
98 | static inline void fintek_cir_reg_write(struct fintek_dev *fintek, u8 val, u8 offset) | |
99 | { | |
100 | outb(val, fintek->cir_addr + offset); | |
101 | } | |
102 | ||
103 | /* read val from cir config register */ | |
104 | static u8 fintek_cir_reg_read(struct fintek_dev *fintek, u8 offset) | |
105 | { | |
106 | u8 val; | |
107 | ||
108 | val = inb(fintek->cir_addr + offset); | |
109 | ||
110 | return val; | |
111 | } | |
112 | ||
113 | #define pr_reg(text, ...) \ | |
114 | printk(KERN_INFO KBUILD_MODNAME ": " text, ## __VA_ARGS__) | |
115 | ||
116 | /* dump current cir register contents */ | |
117 | static void cir_dump_regs(struct fintek_dev *fintek) | |
118 | { | |
119 | fintek_config_mode_enable(fintek); | |
120 | fintek_select_logical_dev(fintek, LOGICAL_DEV_CIR); | |
121 | ||
122 | pr_reg("%s: Dump CIR logical device registers:\n", FINTEK_DRIVER_NAME); | |
123 | pr_reg(" * CR CIR BASE ADDR: 0x%x\n", | |
124 | (fintek_cr_read(fintek, CIR_CR_BASE_ADDR_HI) << 8) | | |
125 | fintek_cr_read(fintek, CIR_CR_BASE_ADDR_LO)); | |
126 | pr_reg(" * CR CIR IRQ NUM: 0x%x\n", | |
127 | fintek_cr_read(fintek, CIR_CR_IRQ_SEL)); | |
128 | ||
129 | fintek_config_mode_disable(fintek); | |
130 | ||
131 | pr_reg("%s: Dump CIR registers:\n", FINTEK_DRIVER_NAME); | |
132 | pr_reg(" * STATUS: 0x%x\n", fintek_cir_reg_read(fintek, CIR_STATUS)); | |
133 | pr_reg(" * CONTROL: 0x%x\n", fintek_cir_reg_read(fintek, CIR_CONTROL)); | |
134 | pr_reg(" * RX_DATA: 0x%x\n", fintek_cir_reg_read(fintek, CIR_RX_DATA)); | |
135 | pr_reg(" * TX_CONTROL: 0x%x\n", fintek_cir_reg_read(fintek, CIR_TX_CONTROL)); | |
136 | pr_reg(" * TX_DATA: 0x%x\n", fintek_cir_reg_read(fintek, CIR_TX_DATA)); | |
137 | } | |
138 | ||
139 | /* detect hardware features */ | |
140 | static int fintek_hw_detect(struct fintek_dev *fintek) | |
141 | { | |
142 | unsigned long flags; | |
143 | u8 chip_major, chip_minor; | |
144 | u8 vendor_major, vendor_minor; | |
145 | u8 portsel, ir_class; | |
146 | u16 vendor; | |
147 | int ret = 0; | |
148 | ||
149 | fintek_config_mode_enable(fintek); | |
150 | ||
151 | /* Check if we're using config port 0x4e or 0x2e */ | |
152 | portsel = fintek_cr_read(fintek, GCR_CONFIG_PORT_SEL); | |
153 | if (portsel == 0xff) { | |
154 | fit_pr(KERN_INFO, "first portsel read was bunk, trying alt"); | |
155 | fintek_config_mode_disable(fintek); | |
156 | fintek->cr_ip = CR_INDEX_PORT2; | |
157 | fintek->cr_dp = CR_DATA_PORT2; | |
158 | fintek_config_mode_enable(fintek); | |
159 | portsel = fintek_cr_read(fintek, GCR_CONFIG_PORT_SEL); | |
160 | } | |
161 | fit_dbg("portsel reg: 0x%02x", portsel); | |
162 | ||
163 | ir_class = fintek_cir_reg_read(fintek, CIR_CR_CLASS); | |
164 | fit_dbg("ir_class reg: 0x%02x", ir_class); | |
165 | ||
166 | switch (ir_class) { | |
167 | case CLASS_RX_2TX: | |
168 | case CLASS_RX_1TX: | |
169 | fintek->hw_tx_capable = true; | |
170 | break; | |
171 | case CLASS_RX_ONLY: | |
172 | default: | |
173 | fintek->hw_tx_capable = false; | |
174 | break; | |
175 | } | |
176 | ||
177 | chip_major = fintek_cr_read(fintek, GCR_CHIP_ID_HI); | |
178 | chip_minor = fintek_cr_read(fintek, GCR_CHIP_ID_LO); | |
179 | ||
180 | vendor_major = fintek_cr_read(fintek, GCR_VENDOR_ID_HI); | |
181 | vendor_minor = fintek_cr_read(fintek, GCR_VENDOR_ID_LO); | |
182 | vendor = vendor_major << 8 | vendor_minor; | |
183 | ||
184 | if (vendor != VENDOR_ID_FINTEK) | |
185 | fit_pr(KERN_WARNING, "Unknown vendor ID: 0x%04x", vendor); | |
186 | else | |
187 | fit_dbg("Read Fintek vendor ID from chip"); | |
188 | ||
189 | fintek_config_mode_disable(fintek); | |
190 | ||
191 | spin_lock_irqsave(&fintek->fintek_lock, flags); | |
192 | fintek->chip_major = chip_major; | |
193 | fintek->chip_minor = chip_minor; | |
194 | fintek->chip_vendor = vendor; | |
195 | spin_unlock_irqrestore(&fintek->fintek_lock, flags); | |
196 | ||
197 | return ret; | |
198 | } | |
199 | ||
200 | static void fintek_cir_ldev_init(struct fintek_dev *fintek) | |
201 | { | |
202 | /* Select CIR logical device and enable */ | |
203 | fintek_select_logical_dev(fintek, LOGICAL_DEV_CIR); | |
204 | fintek_cr_write(fintek, LOGICAL_DEV_ENABLE, CIR_CR_DEV_EN); | |
205 | ||
206 | /* Write allocated CIR address and IRQ information to hardware */ | |
207 | fintek_cr_write(fintek, fintek->cir_addr >> 8, CIR_CR_BASE_ADDR_HI); | |
208 | fintek_cr_write(fintek, fintek->cir_addr & 0xff, CIR_CR_BASE_ADDR_LO); | |
209 | ||
210 | fintek_cr_write(fintek, fintek->cir_irq, CIR_CR_IRQ_SEL); | |
211 | ||
212 | fit_dbg("CIR initialized, base io address: 0x%lx, irq: %d (len: %d)", | |
213 | fintek->cir_addr, fintek->cir_irq, fintek->cir_port_len); | |
214 | } | |
215 | ||
216 | /* enable CIR interrupts */ | |
217 | static void fintek_enable_cir_irq(struct fintek_dev *fintek) | |
218 | { | |
219 | fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_EN, CIR_STATUS); | |
220 | } | |
221 | ||
222 | static void fintek_cir_regs_init(struct fintek_dev *fintek) | |
223 | { | |
224 | /* clear any and all stray interrupts */ | |
225 | fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS); | |
226 | ||
227 | /* and finally, enable interrupts */ | |
228 | fintek_enable_cir_irq(fintek); | |
229 | } | |
230 | ||
231 | static void fintek_enable_wake(struct fintek_dev *fintek) | |
232 | { | |
233 | fintek_config_mode_enable(fintek); | |
234 | fintek_select_logical_dev(fintek, LOGICAL_DEV_ACPI); | |
235 | ||
236 | /* Allow CIR PME's to wake system */ | |
237 | fintek_set_reg_bit(fintek, ACPI_WAKE_EN_CIR_BIT, LDEV_ACPI_WAKE_EN_REG); | |
238 | /* Enable CIR PME's */ | |
239 | fintek_set_reg_bit(fintek, ACPI_PME_CIR_BIT, LDEV_ACPI_PME_EN_REG); | |
240 | /* Clear CIR PME status register */ | |
241 | fintek_set_reg_bit(fintek, ACPI_PME_CIR_BIT, LDEV_ACPI_PME_CLR_REG); | |
242 | /* Save state */ | |
243 | fintek_set_reg_bit(fintek, ACPI_STATE_CIR_BIT, LDEV_ACPI_STATE_REG); | |
244 | ||
245 | fintek_config_mode_disable(fintek); | |
246 | } | |
247 | ||
248 | static int fintek_cmdsize(u8 cmd, u8 subcmd) | |
249 | { | |
250 | int datasize = 0; | |
251 | ||
252 | switch (cmd) { | |
253 | case BUF_COMMAND_NULL: | |
254 | if (subcmd == BUF_HW_CMD_HEADER) | |
255 | datasize = 1; | |
256 | break; | |
257 | case BUF_HW_CMD_HEADER: | |
258 | if (subcmd == BUF_CMD_G_REVISION) | |
259 | datasize = 2; | |
260 | break; | |
261 | case BUF_COMMAND_HEADER: | |
262 | switch (subcmd) { | |
263 | case BUF_CMD_S_CARRIER: | |
264 | case BUF_CMD_S_TIMEOUT: | |
265 | case BUF_RSP_PULSE_COUNT: | |
266 | datasize = 2; | |
267 | break; | |
268 | case BUF_CMD_SIG_END: | |
269 | case BUF_CMD_S_TXMASK: | |
270 | case BUF_CMD_S_RXSENSOR: | |
271 | datasize = 1; | |
272 | break; | |
273 | } | |
274 | } | |
275 | ||
276 | return datasize; | |
277 | } | |
278 | ||
279 | /* process ir data stored in driver buffer */ | |
280 | static void fintek_process_rx_ir_data(struct fintek_dev *fintek) | |
281 | { | |
282 | DEFINE_IR_RAW_EVENT(rawir); | |
283 | u8 sample; | |
284 | int i; | |
285 | ||
286 | for (i = 0; i < fintek->pkts; i++) { | |
287 | sample = fintek->buf[i]; | |
288 | switch (fintek->parser_state) { | |
289 | case CMD_HEADER: | |
290 | fintek->cmd = sample; | |
291 | if ((fintek->cmd == BUF_COMMAND_HEADER) || | |
292 | ((fintek->cmd & BUF_COMMAND_MASK) != | |
293 | BUF_PULSE_BIT)) { | |
294 | fintek->parser_state = SUBCMD; | |
295 | continue; | |
296 | } | |
297 | fintek->rem = (fintek->cmd & BUF_LEN_MASK); | |
298 | fit_dbg("%s: rem: 0x%02x", __func__, fintek->rem); | |
299 | if (fintek->rem) | |
300 | fintek->parser_state = PARSE_IRDATA; | |
301 | else | |
302 | ir_raw_event_reset(fintek->rdev); | |
303 | break; | |
304 | case SUBCMD: | |
305 | fintek->rem = fintek_cmdsize(fintek->cmd, sample); | |
306 | fintek->parser_state = CMD_DATA; | |
307 | break; | |
308 | case CMD_DATA: | |
309 | fintek->rem--; | |
310 | break; | |
311 | case PARSE_IRDATA: | |
312 | fintek->rem--; | |
313 | init_ir_raw_event(&rawir); | |
314 | rawir.pulse = ((sample & BUF_PULSE_BIT) != 0); | |
315 | rawir.duration = US_TO_NS((sample & BUF_SAMPLE_MASK) | |
316 | * CIR_SAMPLE_PERIOD); | |
317 | ||
318 | fit_dbg("Storing %s with duration %d", | |
319 | rawir.pulse ? "pulse" : "space", | |
320 | rawir.duration); | |
321 | ir_raw_event_store_with_filter(fintek->rdev, &rawir); | |
322 | break; | |
323 | } | |
324 | ||
325 | if ((fintek->parser_state != CMD_HEADER) && !fintek->rem) | |
326 | fintek->parser_state = CMD_HEADER; | |
327 | } | |
328 | ||
329 | fintek->pkts = 0; | |
330 | ||
331 | fit_dbg("Calling ir_raw_event_handle"); | |
332 | ir_raw_event_handle(fintek->rdev); | |
333 | } | |
334 | ||
335 | /* copy data from hardware rx register into driver buffer */ | |
336 | static void fintek_get_rx_ir_data(struct fintek_dev *fintek, u8 rx_irqs) | |
337 | { | |
338 | unsigned long flags; | |
339 | u8 sample, status; | |
340 | ||
341 | spin_lock_irqsave(&fintek->fintek_lock, flags); | |
342 | ||
343 | /* | |
344 | * We must read data from CIR_RX_DATA until the hardware IR buffer | |
345 | * is empty and clears the RX_TIMEOUT and/or RX_RECEIVE flags in | |
346 | * the CIR_STATUS register | |
347 | */ | |
348 | do { | |
349 | sample = fintek_cir_reg_read(fintek, CIR_RX_DATA); | |
350 | fit_dbg("%s: sample: 0x%02x", __func__, sample); | |
351 | ||
352 | fintek->buf[fintek->pkts] = sample; | |
353 | fintek->pkts++; | |
354 | ||
355 | status = fintek_cir_reg_read(fintek, CIR_STATUS); | |
356 | if (!(status & CIR_STATUS_IRQ_EN)) | |
357 | break; | |
358 | } while (status & rx_irqs); | |
359 | ||
360 | fintek_process_rx_ir_data(fintek); | |
361 | ||
362 | spin_unlock_irqrestore(&fintek->fintek_lock, flags); | |
363 | } | |
364 | ||
365 | static void fintek_cir_log_irqs(u8 status) | |
366 | { | |
367 | fit_pr(KERN_INFO, "IRQ 0x%02x:%s%s%s%s%s", status, | |
368 | status & CIR_STATUS_IRQ_EN ? " IRQEN" : "", | |
369 | status & CIR_STATUS_TX_FINISH ? " TXF" : "", | |
370 | status & CIR_STATUS_TX_UNDERRUN ? " TXU" : "", | |
371 | status & CIR_STATUS_RX_TIMEOUT ? " RXTO" : "", | |
372 | status & CIR_STATUS_RX_RECEIVE ? " RXOK" : ""); | |
373 | } | |
374 | ||
375 | /* interrupt service routine for incoming and outgoing CIR data */ | |
376 | static irqreturn_t fintek_cir_isr(int irq, void *data) | |
377 | { | |
378 | struct fintek_dev *fintek = data; | |
379 | u8 status, rx_irqs; | |
380 | ||
381 | fit_dbg_verbose("%s firing", __func__); | |
382 | ||
383 | fintek_config_mode_enable(fintek); | |
384 | fintek_select_logical_dev(fintek, LOGICAL_DEV_CIR); | |
385 | fintek_config_mode_disable(fintek); | |
386 | ||
387 | /* | |
388 | * Get IR Status register contents. Write 1 to ack/clear | |
389 | * | |
390 | * bit: reg name - description | |
391 | * 3: TX_FINISH - TX is finished | |
392 | * 2: TX_UNDERRUN - TX underrun | |
393 | * 1: RX_TIMEOUT - RX data timeout | |
394 | * 0: RX_RECEIVE - RX data received | |
395 | */ | |
396 | status = fintek_cir_reg_read(fintek, CIR_STATUS); | |
397 | if (!(status & CIR_STATUS_IRQ_MASK) || status == 0xff) { | |
398 | fit_dbg_verbose("%s exiting, IRSTS 0x%02x", __func__, status); | |
399 | fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS); | |
400 | return IRQ_RETVAL(IRQ_NONE); | |
401 | } | |
402 | ||
403 | if (debug) | |
404 | fintek_cir_log_irqs(status); | |
405 | ||
406 | rx_irqs = status & (CIR_STATUS_RX_RECEIVE | CIR_STATUS_RX_TIMEOUT); | |
407 | if (rx_irqs) | |
408 | fintek_get_rx_ir_data(fintek, rx_irqs); | |
409 | ||
410 | /* ack/clear all irq flags we've got */ | |
411 | fintek_cir_reg_write(fintek, status, CIR_STATUS); | |
412 | ||
413 | fit_dbg_verbose("%s done", __func__); | |
414 | return IRQ_RETVAL(IRQ_HANDLED); | |
415 | } | |
416 | ||
417 | static void fintek_enable_cir(struct fintek_dev *fintek) | |
418 | { | |
419 | /* set IRQ enabled */ | |
420 | fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_EN, CIR_STATUS); | |
421 | ||
422 | fintek_config_mode_enable(fintek); | |
423 | ||
424 | /* enable the CIR logical device */ | |
425 | fintek_select_logical_dev(fintek, LOGICAL_DEV_CIR); | |
426 | fintek_cr_write(fintek, LOGICAL_DEV_ENABLE, CIR_CR_DEV_EN); | |
427 | ||
428 | fintek_config_mode_disable(fintek); | |
429 | ||
430 | /* clear all pending interrupts */ | |
431 | fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS); | |
432 | ||
433 | /* enable interrupts */ | |
434 | fintek_enable_cir_irq(fintek); | |
435 | } | |
436 | ||
437 | static void fintek_disable_cir(struct fintek_dev *fintek) | |
438 | { | |
439 | fintek_config_mode_enable(fintek); | |
440 | ||
441 | /* disable the CIR logical device */ | |
442 | fintek_select_logical_dev(fintek, LOGICAL_DEV_CIR); | |
443 | fintek_cr_write(fintek, LOGICAL_DEV_DISABLE, CIR_CR_DEV_EN); | |
444 | ||
445 | fintek_config_mode_disable(fintek); | |
446 | } | |
447 | ||
448 | static int fintek_open(struct rc_dev *dev) | |
449 | { | |
450 | struct fintek_dev *fintek = dev->priv; | |
451 | unsigned long flags; | |
452 | ||
453 | spin_lock_irqsave(&fintek->fintek_lock, flags); | |
454 | fintek_enable_cir(fintek); | |
455 | spin_unlock_irqrestore(&fintek->fintek_lock, flags); | |
456 | ||
457 | return 0; | |
458 | } | |
459 | ||
460 | static void fintek_close(struct rc_dev *dev) | |
461 | { | |
462 | struct fintek_dev *fintek = dev->priv; | |
463 | unsigned long flags; | |
464 | ||
465 | spin_lock_irqsave(&fintek->fintek_lock, flags); | |
466 | fintek_disable_cir(fintek); | |
467 | spin_unlock_irqrestore(&fintek->fintek_lock, flags); | |
468 | } | |
469 | ||
470 | /* Allocate memory, probe hardware, and initialize everything */ | |
471 | static int fintek_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id) | |
472 | { | |
473 | struct fintek_dev *fintek; | |
474 | struct rc_dev *rdev; | |
475 | int ret = -ENOMEM; | |
476 | ||
477 | fintek = kzalloc(sizeof(struct fintek_dev), GFP_KERNEL); | |
478 | if (!fintek) | |
479 | return ret; | |
480 | ||
481 | /* input device for IR remote (and tx) */ | |
482 | rdev = rc_allocate_device(); | |
483 | if (!rdev) | |
484 | goto failure; | |
485 | ||
486 | ret = -ENODEV; | |
487 | /* validate pnp resources */ | |
488 | if (!pnp_port_valid(pdev, 0)) { | |
489 | dev_err(&pdev->dev, "IR PNP Port not valid!\n"); | |
490 | goto failure; | |
491 | } | |
492 | ||
493 | if (!pnp_irq_valid(pdev, 0)) { | |
494 | dev_err(&pdev->dev, "IR PNP IRQ not valid!\n"); | |
495 | goto failure; | |
496 | } | |
497 | ||
498 | fintek->cir_addr = pnp_port_start(pdev, 0); | |
499 | fintek->cir_irq = pnp_irq(pdev, 0); | |
500 | fintek->cir_port_len = pnp_port_len(pdev, 0); | |
501 | ||
502 | fintek->cr_ip = CR_INDEX_PORT; | |
503 | fintek->cr_dp = CR_DATA_PORT; | |
504 | ||
505 | spin_lock_init(&fintek->fintek_lock); | |
506 | ||
507 | ret = -EBUSY; | |
508 | /* now claim resources */ | |
509 | if (!request_region(fintek->cir_addr, | |
510 | fintek->cir_port_len, FINTEK_DRIVER_NAME)) | |
511 | goto failure; | |
512 | ||
513 | if (request_irq(fintek->cir_irq, fintek_cir_isr, IRQF_SHARED, | |
514 | FINTEK_DRIVER_NAME, (void *)fintek)) | |
515 | goto failure; | |
516 | ||
517 | pnp_set_drvdata(pdev, fintek); | |
518 | fintek->pdev = pdev; | |
519 | ||
520 | ret = fintek_hw_detect(fintek); | |
521 | if (ret) | |
522 | goto failure; | |
523 | ||
524 | /* Initialize CIR & CIR Wake Logical Devices */ | |
525 | fintek_config_mode_enable(fintek); | |
526 | fintek_cir_ldev_init(fintek); | |
527 | fintek_config_mode_disable(fintek); | |
528 | ||
529 | /* Initialize CIR & CIR Wake Config Registers */ | |
530 | fintek_cir_regs_init(fintek); | |
531 | ||
532 | /* Set up the rc device */ | |
533 | rdev->priv = fintek; | |
534 | rdev->driver_type = RC_DRIVER_IR_RAW; | |
535 | rdev->allowed_protos = RC_TYPE_ALL; | |
536 | rdev->open = fintek_open; | |
537 | rdev->close = fintek_close; | |
538 | rdev->input_name = FINTEK_DESCRIPTION; | |
539 | rdev->input_phys = "fintek/cir0"; | |
540 | rdev->input_id.bustype = BUS_HOST; | |
541 | rdev->input_id.vendor = VENDOR_ID_FINTEK; | |
542 | rdev->input_id.product = fintek->chip_major; | |
543 | rdev->input_id.version = fintek->chip_minor; | |
544 | rdev->dev.parent = &pdev->dev; | |
545 | rdev->driver_name = FINTEK_DRIVER_NAME; | |
546 | rdev->map_name = RC_MAP_RC6_MCE; | |
547 | rdev->timeout = US_TO_NS(1000); | |
548 | /* rx resolution is hardwired to 50us atm, 1, 25, 100 also possible */ | |
549 | rdev->rx_resolution = US_TO_NS(CIR_SAMPLE_PERIOD); | |
550 | ||
551 | ret = rc_register_device(rdev); | |
552 | if (ret) | |
553 | goto failure; | |
554 | ||
555 | device_init_wakeup(&pdev->dev, true); | |
556 | fintek->rdev = rdev; | |
557 | fit_pr(KERN_NOTICE, "driver has been successfully loaded\n"); | |
558 | if (debug) | |
559 | cir_dump_regs(fintek); | |
560 | ||
561 | return 0; | |
562 | ||
563 | failure: | |
564 | if (fintek->cir_irq) | |
565 | free_irq(fintek->cir_irq, fintek); | |
566 | if (fintek->cir_addr) | |
567 | release_region(fintek->cir_addr, fintek->cir_port_len); | |
568 | ||
569 | rc_free_device(rdev); | |
570 | kfree(fintek); | |
571 | ||
572 | return ret; | |
573 | } | |
574 | ||
575 | static void __devexit fintek_remove(struct pnp_dev *pdev) | |
576 | { | |
577 | struct fintek_dev *fintek = pnp_get_drvdata(pdev); | |
578 | unsigned long flags; | |
579 | ||
580 | spin_lock_irqsave(&fintek->fintek_lock, flags); | |
581 | /* disable CIR */ | |
582 | fintek_disable_cir(fintek); | |
583 | fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS); | |
584 | /* enable CIR Wake (for IR power-on) */ | |
585 | fintek_enable_wake(fintek); | |
586 | spin_unlock_irqrestore(&fintek->fintek_lock, flags); | |
587 | ||
588 | /* free resources */ | |
589 | free_irq(fintek->cir_irq, fintek); | |
590 | release_region(fintek->cir_addr, fintek->cir_port_len); | |
591 | ||
592 | rc_unregister_device(fintek->rdev); | |
593 | ||
594 | kfree(fintek); | |
595 | } | |
596 | ||
597 | static int fintek_suspend(struct pnp_dev *pdev, pm_message_t state) | |
598 | { | |
599 | struct fintek_dev *fintek = pnp_get_drvdata(pdev); | |
0ae90252 | 600 | unsigned long flags; |
9bdc79ea JW |
601 | |
602 | fit_dbg("%s called", __func__); | |
603 | ||
0ae90252 JW |
604 | spin_lock_irqsave(&fintek->fintek_lock, flags); |
605 | ||
9bdc79ea JW |
606 | /* disable all CIR interrupts */ |
607 | fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS); | |
608 | ||
0ae90252 JW |
609 | spin_unlock_irqrestore(&fintek->fintek_lock, flags); |
610 | ||
9bdc79ea JW |
611 | fintek_config_mode_enable(fintek); |
612 | ||
613 | /* disable cir logical dev */ | |
614 | fintek_select_logical_dev(fintek, LOGICAL_DEV_CIR); | |
615 | fintek_cr_write(fintek, LOGICAL_DEV_DISABLE, CIR_CR_DEV_EN); | |
616 | ||
617 | fintek_config_mode_disable(fintek); | |
618 | ||
619 | /* make sure wake is enabled */ | |
620 | fintek_enable_wake(fintek); | |
621 | ||
622 | return 0; | |
623 | } | |
624 | ||
625 | static int fintek_resume(struct pnp_dev *pdev) | |
626 | { | |
627 | int ret = 0; | |
628 | struct fintek_dev *fintek = pnp_get_drvdata(pdev); | |
629 | ||
630 | fit_dbg("%s called", __func__); | |
631 | ||
632 | /* open interrupt */ | |
633 | fintek_enable_cir_irq(fintek); | |
634 | ||
635 | /* Enable CIR logical device */ | |
636 | fintek_config_mode_enable(fintek); | |
637 | fintek_select_logical_dev(fintek, LOGICAL_DEV_CIR); | |
638 | fintek_cr_write(fintek, LOGICAL_DEV_ENABLE, CIR_CR_DEV_EN); | |
639 | ||
640 | fintek_config_mode_disable(fintek); | |
641 | ||
642 | fintek_cir_regs_init(fintek); | |
643 | ||
644 | return ret; | |
645 | } | |
646 | ||
647 | static void fintek_shutdown(struct pnp_dev *pdev) | |
648 | { | |
649 | struct fintek_dev *fintek = pnp_get_drvdata(pdev); | |
650 | fintek_enable_wake(fintek); | |
651 | } | |
652 | ||
653 | static const struct pnp_device_id fintek_ids[] = { | |
654 | { "FIT0002", 0 }, /* CIR */ | |
655 | { "", 0 }, | |
656 | }; | |
657 | ||
658 | static struct pnp_driver fintek_driver = { | |
659 | .name = FINTEK_DRIVER_NAME, | |
660 | .id_table = fintek_ids, | |
661 | .flags = PNP_DRIVER_RES_DO_NOT_CHANGE, | |
662 | .probe = fintek_probe, | |
663 | .remove = __devexit_p(fintek_remove), | |
664 | .suspend = fintek_suspend, | |
665 | .resume = fintek_resume, | |
666 | .shutdown = fintek_shutdown, | |
667 | }; | |
668 | ||
669 | int fintek_init(void) | |
670 | { | |
671 | return pnp_register_driver(&fintek_driver); | |
672 | } | |
673 | ||
674 | void fintek_exit(void) | |
675 | { | |
676 | pnp_unregister_driver(&fintek_driver); | |
677 | } | |
678 | ||
679 | module_param(debug, int, S_IRUGO | S_IWUSR); | |
680 | MODULE_PARM_DESC(debug, "Enable debugging output"); | |
681 | ||
682 | MODULE_DEVICE_TABLE(pnp, fintek_ids); | |
683 | MODULE_DESCRIPTION(FINTEK_DESCRIPTION " driver"); | |
684 | ||
685 | MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>"); | |
686 | MODULE_LICENSE("GPL"); | |
687 | ||
688 | module_init(fintek_init); | |
689 | module_exit(fintek_exit); |