2 * Driver for Nuvoton Technology Corporation w83667hg/w83677hg-i CIR
4 * Copyright (C) 2010 Jarod Wilson <jarod@redhat.com>
5 * Copyright (C) 2009 Nuvoton PS Team
7 * Special thanks to Nuvoton for providing hardware, spec sheets and
8 * sample code upon which portions of this driver are based. Indirect
9 * thanks also to Maxim Levitsky, whose ene_ir driver this driver is
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License as
14 * published by the Free Software Foundation; either version 2 of the
15 * License, or (at your option) any later version.
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
28 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/pnp.h>
34 #include <linux/interrupt.h>
35 #include <linux/sched.h>
36 #include <linux/slab.h>
37 #include <media/rc-core.h>
38 #include <linux/pci_ids.h>
40 #include "nuvoton-cir.h"
42 static void nvt_clear_cir_wake_fifo(struct nvt_dev
*nvt
);
44 static const struct nvt_chip nvt_chips
[] = {
45 { "w83667hg", NVT_W83667HG
},
46 { "NCT6775F", NVT_6775F
},
47 { "NCT6776F", NVT_6776F
},
48 { "NCT6779D", NVT_6779D
},
51 static inline bool is_w83667hg(struct nvt_dev
*nvt
)
53 return nvt
->chip_ver
== NVT_W83667HG
;
56 /* write val to config reg */
57 static inline void nvt_cr_write(struct nvt_dev
*nvt
, u8 val
, u8 reg
)
59 outb(reg
, nvt
->cr_efir
);
60 outb(val
, nvt
->cr_efdr
);
63 /* read val from config reg */
64 static inline u8
nvt_cr_read(struct nvt_dev
*nvt
, u8 reg
)
66 outb(reg
, nvt
->cr_efir
);
67 return inb(nvt
->cr_efdr
);
70 /* update config register bit without changing other bits */
71 static inline void nvt_set_reg_bit(struct nvt_dev
*nvt
, u8 val
, u8 reg
)
73 u8 tmp
= nvt_cr_read(nvt
, reg
) | val
;
74 nvt_cr_write(nvt
, tmp
, reg
);
77 /* clear config register bit without changing other bits */
78 static inline void nvt_clear_reg_bit(struct nvt_dev
*nvt
, u8 val
, u8 reg
)
80 u8 tmp
= nvt_cr_read(nvt
, reg
) & ~val
;
81 nvt_cr_write(nvt
, tmp
, reg
);
84 /* enter extended function mode */
85 static inline int nvt_efm_enable(struct nvt_dev
*nvt
)
87 if (!request_muxed_region(nvt
->cr_efir
, 2, NVT_DRIVER_NAME
))
90 /* Enabling Extended Function Mode explicitly requires writing 2x */
91 outb(EFER_EFM_ENABLE
, nvt
->cr_efir
);
92 outb(EFER_EFM_ENABLE
, nvt
->cr_efir
);
97 /* exit extended function mode */
98 static inline void nvt_efm_disable(struct nvt_dev
*nvt
)
100 outb(EFER_EFM_DISABLE
, nvt
->cr_efir
);
102 release_region(nvt
->cr_efir
, 2);
106 * When you want to address a specific logical device, write its logical
107 * device number to CR_LOGICAL_DEV_SEL, then enable/disable by writing
108 * 0x1/0x0 respectively to CR_LOGICAL_DEV_EN.
110 static inline void nvt_select_logical_dev(struct nvt_dev
*nvt
, u8 ldev
)
112 nvt_cr_write(nvt
, ldev
, CR_LOGICAL_DEV_SEL
);
115 /* select and enable logical device with setting EFM mode*/
116 static inline void nvt_enable_logical_dev(struct nvt_dev
*nvt
, u8 ldev
)
119 nvt_select_logical_dev(nvt
, ldev
);
120 nvt_cr_write(nvt
, LOGICAL_DEV_ENABLE
, CR_LOGICAL_DEV_EN
);
121 nvt_efm_disable(nvt
);
124 /* select and disable logical device with setting EFM mode*/
125 static inline void nvt_disable_logical_dev(struct nvt_dev
*nvt
, u8 ldev
)
128 nvt_select_logical_dev(nvt
, ldev
);
129 nvt_cr_write(nvt
, LOGICAL_DEV_DISABLE
, CR_LOGICAL_DEV_EN
);
130 nvt_efm_disable(nvt
);
133 /* write val to cir config register */
134 static inline void nvt_cir_reg_write(struct nvt_dev
*nvt
, u8 val
, u8 offset
)
136 outb(val
, nvt
->cir_addr
+ offset
);
139 /* read val from cir config register */
140 static u8
nvt_cir_reg_read(struct nvt_dev
*nvt
, u8 offset
)
144 val
= inb(nvt
->cir_addr
+ offset
);
149 /* write val to cir wake register */
150 static inline void nvt_cir_wake_reg_write(struct nvt_dev
*nvt
,
153 outb(val
, nvt
->cir_wake_addr
+ offset
);
156 /* read val from cir wake config register */
157 static u8
nvt_cir_wake_reg_read(struct nvt_dev
*nvt
, u8 offset
)
161 val
= inb(nvt
->cir_wake_addr
+ offset
);
166 /* don't override io address if one is set already */
167 static void nvt_set_ioaddr(struct nvt_dev
*nvt
, unsigned long *ioaddr
)
169 unsigned long old_addr
;
171 old_addr
= nvt_cr_read(nvt
, CR_CIR_BASE_ADDR_HI
) << 8;
172 old_addr
|= nvt_cr_read(nvt
, CR_CIR_BASE_ADDR_LO
);
177 nvt_cr_write(nvt
, *ioaddr
>> 8, CR_CIR_BASE_ADDR_HI
);
178 nvt_cr_write(nvt
, *ioaddr
& 0xff, CR_CIR_BASE_ADDR_LO
);
182 static ssize_t
wakeup_data_show(struct device
*dev
,
183 struct device_attribute
*attr
,
186 struct rc_dev
*rc_dev
= to_rc_dev(dev
);
187 struct nvt_dev
*nvt
= rc_dev
->priv
;
188 int fifo_len
, duration
;
193 spin_lock_irqsave(&nvt
->nvt_lock
, flags
);
195 fifo_len
= nvt_cir_wake_reg_read(nvt
, CIR_WAKE_FIFO_COUNT
);
196 fifo_len
= min(fifo_len
, WAKEUP_MAX_SIZE
);
198 /* go to first element to be read */
199 while (nvt_cir_wake_reg_read(nvt
, CIR_WAKE_RD_FIFO_ONLY_IDX
))
200 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_RD_FIFO_ONLY
);
202 for (i
= 0; i
< fifo_len
; i
++) {
203 duration
= nvt_cir_wake_reg_read(nvt
, CIR_WAKE_RD_FIFO_ONLY
);
204 duration
= (duration
& BUF_LEN_MASK
) * SAMPLE_PERIOD
;
205 buf_len
+= snprintf(buf
+ buf_len
, PAGE_SIZE
- buf_len
,
208 buf_len
+= snprintf(buf
+ buf_len
, PAGE_SIZE
- buf_len
, "\n");
210 spin_unlock_irqrestore(&nvt
->nvt_lock
, flags
);
215 static ssize_t
wakeup_data_store(struct device
*dev
,
216 struct device_attribute
*attr
,
217 const char *buf
, size_t len
)
219 struct rc_dev
*rc_dev
= to_rc_dev(dev
);
220 struct nvt_dev
*nvt
= rc_dev
->priv
;
222 u8 tolerance
, config
, wake_buf
[WAKEUP_MAX_SIZE
];
228 argv
= argv_split(GFP_KERNEL
, buf
, &count
);
231 if (!count
|| count
> WAKEUP_MAX_SIZE
) {
236 for (i
= 0; i
< count
; i
++) {
237 ret
= kstrtouint(argv
[i
], 10, &val
);
240 val
= DIV_ROUND_CLOSEST(val
, SAMPLE_PERIOD
);
241 if (!val
|| val
> 0x7f) {
246 /* sequence must start with a pulse */
248 wake_buf
[i
] |= BUF_PULSE_BIT
;
251 /* hardcode the tolerance to 10% */
252 tolerance
= DIV_ROUND_UP(count
, 10);
254 spin_lock_irqsave(&nvt
->nvt_lock
, flags
);
256 nvt_clear_cir_wake_fifo(nvt
);
257 nvt_cir_wake_reg_write(nvt
, count
, CIR_WAKE_FIFO_CMP_DEEP
);
258 nvt_cir_wake_reg_write(nvt
, tolerance
, CIR_WAKE_FIFO_CMP_TOL
);
260 config
= nvt_cir_wake_reg_read(nvt
, CIR_WAKE_IRCON
);
262 /* enable writes to wake fifo */
263 nvt_cir_wake_reg_write(nvt
, config
| CIR_WAKE_IRCON_MODE1
,
266 for (i
= 0; i
< count
; i
++)
267 nvt_cir_wake_reg_write(nvt
, wake_buf
[i
], CIR_WAKE_WR_FIFO_DATA
);
269 nvt_cir_wake_reg_write(nvt
, config
, CIR_WAKE_IRCON
);
271 spin_unlock_irqrestore(&nvt
->nvt_lock
, flags
);
278 static DEVICE_ATTR_RW(wakeup_data
);
280 /* dump current cir register contents */
281 static void cir_dump_regs(struct nvt_dev
*nvt
)
284 nvt_select_logical_dev(nvt
, LOGICAL_DEV_CIR
);
286 pr_info("%s: Dump CIR logical device registers:\n", NVT_DRIVER_NAME
);
287 pr_info(" * CR CIR ACTIVE : 0x%x\n",
288 nvt_cr_read(nvt
, CR_LOGICAL_DEV_EN
));
289 pr_info(" * CR CIR BASE ADDR: 0x%x\n",
290 (nvt_cr_read(nvt
, CR_CIR_BASE_ADDR_HI
) << 8) |
291 nvt_cr_read(nvt
, CR_CIR_BASE_ADDR_LO
));
292 pr_info(" * CR CIR IRQ NUM: 0x%x\n",
293 nvt_cr_read(nvt
, CR_CIR_IRQ_RSRC
));
295 nvt_efm_disable(nvt
);
297 pr_info("%s: Dump CIR registers:\n", NVT_DRIVER_NAME
);
298 pr_info(" * IRCON: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_IRCON
));
299 pr_info(" * IRSTS: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_IRSTS
));
300 pr_info(" * IREN: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_IREN
));
301 pr_info(" * RXFCONT: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_RXFCONT
));
302 pr_info(" * CP: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_CP
));
303 pr_info(" * CC: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_CC
));
304 pr_info(" * SLCH: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_SLCH
));
305 pr_info(" * SLCL: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_SLCL
));
306 pr_info(" * FIFOCON: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_FIFOCON
));
307 pr_info(" * IRFIFOSTS: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_IRFIFOSTS
));
308 pr_info(" * SRXFIFO: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_SRXFIFO
));
309 pr_info(" * TXFCONT: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_TXFCONT
));
310 pr_info(" * STXFIFO: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_STXFIFO
));
311 pr_info(" * FCCH: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_FCCH
));
312 pr_info(" * FCCL: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_FCCL
));
313 pr_info(" * IRFSM: 0x%x\n", nvt_cir_reg_read(nvt
, CIR_IRFSM
));
316 /* dump current cir wake register contents */
317 static void cir_wake_dump_regs(struct nvt_dev
*nvt
)
322 nvt_select_logical_dev(nvt
, LOGICAL_DEV_CIR_WAKE
);
324 pr_info("%s: Dump CIR WAKE logical device registers:\n",
326 pr_info(" * CR CIR WAKE ACTIVE : 0x%x\n",
327 nvt_cr_read(nvt
, CR_LOGICAL_DEV_EN
));
328 pr_info(" * CR CIR WAKE BASE ADDR: 0x%x\n",
329 (nvt_cr_read(nvt
, CR_CIR_BASE_ADDR_HI
) << 8) |
330 nvt_cr_read(nvt
, CR_CIR_BASE_ADDR_LO
));
331 pr_info(" * CR CIR WAKE IRQ NUM: 0x%x\n",
332 nvt_cr_read(nvt
, CR_CIR_IRQ_RSRC
));
334 nvt_efm_disable(nvt
);
336 pr_info("%s: Dump CIR WAKE registers\n", NVT_DRIVER_NAME
);
337 pr_info(" * IRCON: 0x%x\n",
338 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_IRCON
));
339 pr_info(" * IRSTS: 0x%x\n",
340 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_IRSTS
));
341 pr_info(" * IREN: 0x%x\n",
342 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_IREN
));
343 pr_info(" * FIFO CMP DEEP: 0x%x\n",
344 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_FIFO_CMP_DEEP
));
345 pr_info(" * FIFO CMP TOL: 0x%x\n",
346 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_FIFO_CMP_TOL
));
347 pr_info(" * FIFO COUNT: 0x%x\n",
348 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_FIFO_COUNT
));
349 pr_info(" * SLCH: 0x%x\n",
350 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_SLCH
));
351 pr_info(" * SLCL: 0x%x\n",
352 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_SLCL
));
353 pr_info(" * FIFOCON: 0x%x\n",
354 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_FIFOCON
));
355 pr_info(" * SRXFSTS: 0x%x\n",
356 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_SRXFSTS
));
357 pr_info(" * SAMPLE RX FIFO: 0x%x\n",
358 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_SAMPLE_RX_FIFO
));
359 pr_info(" * WR FIFO DATA: 0x%x\n",
360 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_WR_FIFO_DATA
));
361 pr_info(" * RD FIFO ONLY: 0x%x\n",
362 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_RD_FIFO_ONLY
));
363 pr_info(" * RD FIFO ONLY IDX: 0x%x\n",
364 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_RD_FIFO_ONLY_IDX
));
365 pr_info(" * FIFO IGNORE: 0x%x\n",
366 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_FIFO_IGNORE
));
367 pr_info(" * IRFSM: 0x%x\n",
368 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_IRFSM
));
370 fifo_len
= nvt_cir_wake_reg_read(nvt
, CIR_WAKE_FIFO_COUNT
);
371 pr_info("%s: Dump CIR WAKE FIFO (len %d)\n", NVT_DRIVER_NAME
, fifo_len
);
372 pr_info("* Contents =");
373 for (i
= 0; i
< fifo_len
; i
++)
375 nvt_cir_wake_reg_read(nvt
, CIR_WAKE_RD_FIFO_ONLY
));
379 static inline const char *nvt_find_chip(struct nvt_dev
*nvt
, int id
)
383 for (i
= 0; i
< ARRAY_SIZE(nvt_chips
); i
++)
384 if ((id
& SIO_ID_MASK
) == nvt_chips
[i
].chip_ver
) {
385 nvt
->chip_ver
= nvt_chips
[i
].chip_ver
;
386 return nvt_chips
[i
].name
;
393 /* detect hardware features */
394 static int nvt_hw_detect(struct nvt_dev
*nvt
)
396 const char *chip_name
;
401 /* Check if we're wired for the alternate EFER setup */
402 nvt
->chip_major
= nvt_cr_read(nvt
, CR_CHIP_ID_HI
);
403 if (nvt
->chip_major
== 0xff) {
404 nvt
->cr_efir
= CR_EFIR2
;
405 nvt
->cr_efdr
= CR_EFDR2
;
407 nvt
->chip_major
= nvt_cr_read(nvt
, CR_CHIP_ID_HI
);
409 nvt
->chip_minor
= nvt_cr_read(nvt
, CR_CHIP_ID_LO
);
411 nvt_efm_disable(nvt
);
413 chip_id
= nvt
->chip_major
<< 8 | nvt
->chip_minor
;
414 if (chip_id
== NVT_INVALID
) {
415 dev_err(&nvt
->pdev
->dev
,
416 "No device found on either EFM port\n");
420 chip_name
= nvt_find_chip(nvt
, chip_id
);
422 /* warn, but still let the driver load, if we don't know this chip */
424 dev_warn(&nvt
->pdev
->dev
,
425 "unknown chip, id: 0x%02x 0x%02x, it may not work...",
426 nvt
->chip_major
, nvt
->chip_minor
);
428 dev_info(&nvt
->pdev
->dev
,
429 "found %s or compatible: chip id: 0x%02x 0x%02x",
430 chip_name
, nvt
->chip_major
, nvt
->chip_minor
);
435 static void nvt_cir_ldev_init(struct nvt_dev
*nvt
)
437 u8 val
, psreg
, psmask
, psval
;
439 if (is_w83667hg(nvt
)) {
440 psreg
= CR_MULTIFUNC_PIN_SEL
;
441 psmask
= MULTIFUNC_PIN_SEL_MASK
;
442 psval
= MULTIFUNC_ENABLE_CIR
| MULTIFUNC_ENABLE_CIRWB
;
444 psreg
= CR_OUTPUT_PIN_SEL
;
445 psmask
= OUTPUT_PIN_SEL_MASK
;
446 psval
= OUTPUT_ENABLE_CIR
| OUTPUT_ENABLE_CIRWB
;
449 /* output pin selection: enable CIR, with WB sensor enabled */
450 val
= nvt_cr_read(nvt
, psreg
);
453 nvt_cr_write(nvt
, val
, psreg
);
455 /* Select CIR logical device */
456 nvt_select_logical_dev(nvt
, LOGICAL_DEV_CIR
);
458 nvt_set_ioaddr(nvt
, &nvt
->cir_addr
);
460 nvt_cr_write(nvt
, nvt
->cir_irq
, CR_CIR_IRQ_RSRC
);
462 nvt_dbg("CIR initialized, base io port address: 0x%lx, irq: %d",
463 nvt
->cir_addr
, nvt
->cir_irq
);
466 static void nvt_cir_wake_ldev_init(struct nvt_dev
*nvt
)
468 /* Select ACPI logical device and anable it */
469 nvt_select_logical_dev(nvt
, LOGICAL_DEV_ACPI
);
470 nvt_cr_write(nvt
, LOGICAL_DEV_ENABLE
, CR_LOGICAL_DEV_EN
);
472 /* Enable CIR Wake via PSOUT# (Pin60) */
473 nvt_set_reg_bit(nvt
, CIR_WAKE_ENABLE_BIT
, CR_ACPI_CIR_WAKE
);
475 /* enable pme interrupt of cir wakeup event */
476 nvt_set_reg_bit(nvt
, PME_INTR_CIR_PASS_BIT
, CR_ACPI_IRQ_EVENTS2
);
478 /* Select CIR Wake logical device */
479 nvt_select_logical_dev(nvt
, LOGICAL_DEV_CIR_WAKE
);
481 nvt_set_ioaddr(nvt
, &nvt
->cir_wake_addr
);
483 nvt_dbg("CIR Wake initialized, base io port address: 0x%lx",
487 /* clear out the hardware's cir rx fifo */
488 static void nvt_clear_cir_fifo(struct nvt_dev
*nvt
)
492 val
= nvt_cir_reg_read(nvt
, CIR_FIFOCON
);
493 nvt_cir_reg_write(nvt
, val
| CIR_FIFOCON_RXFIFOCLR
, CIR_FIFOCON
);
496 /* clear out the hardware's cir wake rx fifo */
497 static void nvt_clear_cir_wake_fifo(struct nvt_dev
*nvt
)
501 config
= nvt_cir_wake_reg_read(nvt
, CIR_WAKE_IRCON
);
503 /* clearing wake fifo works in learning mode only */
504 nvt_cir_wake_reg_write(nvt
, config
& ~CIR_WAKE_IRCON_MODE0
,
507 val
= nvt_cir_wake_reg_read(nvt
, CIR_WAKE_FIFOCON
);
508 nvt_cir_wake_reg_write(nvt
, val
| CIR_WAKE_FIFOCON_RXFIFOCLR
,
511 nvt_cir_wake_reg_write(nvt
, config
, CIR_WAKE_IRCON
);
514 /* clear out the hardware's cir tx fifo */
515 static void nvt_clear_tx_fifo(struct nvt_dev
*nvt
)
519 val
= nvt_cir_reg_read(nvt
, CIR_FIFOCON
);
520 nvt_cir_reg_write(nvt
, val
| CIR_FIFOCON_TXFIFOCLR
, CIR_FIFOCON
);
523 /* enable RX Trigger Level Reach and Packet End interrupts */
524 static void nvt_set_cir_iren(struct nvt_dev
*nvt
)
528 iren
= CIR_IREN_RTR
| CIR_IREN_PE
| CIR_IREN_RFO
;
529 nvt_cir_reg_write(nvt
, iren
, CIR_IREN
);
532 static void nvt_cir_regs_init(struct nvt_dev
*nvt
)
534 /* set sample limit count (PE interrupt raised when reached) */
535 nvt_cir_reg_write(nvt
, CIR_RX_LIMIT_COUNT
>> 8, CIR_SLCH
);
536 nvt_cir_reg_write(nvt
, CIR_RX_LIMIT_COUNT
& 0xff, CIR_SLCL
);
538 /* set fifo irq trigger levels */
539 nvt_cir_reg_write(nvt
, CIR_FIFOCON_TX_TRIGGER_LEV
|
540 CIR_FIFOCON_RX_TRIGGER_LEV
, CIR_FIFOCON
);
543 * Enable TX and RX, specify carrier on = low, off = high, and set
544 * sample period (currently 50us)
546 nvt_cir_reg_write(nvt
,
547 CIR_IRCON_TXEN
| CIR_IRCON_RXEN
|
548 CIR_IRCON_RXINV
| CIR_IRCON_SAMPLE_PERIOD_SEL
,
551 /* clear hardware rx and tx fifos */
552 nvt_clear_cir_fifo(nvt
);
553 nvt_clear_tx_fifo(nvt
);
555 /* clear any and all stray interrupts */
556 nvt_cir_reg_write(nvt
, 0xff, CIR_IRSTS
);
558 /* and finally, enable interrupts */
559 nvt_set_cir_iren(nvt
);
561 /* enable the CIR logical device */
562 nvt_enable_logical_dev(nvt
, LOGICAL_DEV_CIR
);
565 static void nvt_cir_wake_regs_init(struct nvt_dev
*nvt
)
567 /* set number of bytes needed for wake from s3 (default 65) */
568 nvt_cir_wake_reg_write(nvt
, CIR_WAKE_FIFO_CMP_BYTES
,
569 CIR_WAKE_FIFO_CMP_DEEP
);
571 /* set tolerance/variance allowed per byte during wake compare */
572 nvt_cir_wake_reg_write(nvt
, CIR_WAKE_CMP_TOLERANCE
,
573 CIR_WAKE_FIFO_CMP_TOL
);
575 /* set sample limit count (PE interrupt raised when reached) */
576 nvt_cir_wake_reg_write(nvt
, CIR_RX_LIMIT_COUNT
>> 8, CIR_WAKE_SLCH
);
577 nvt_cir_wake_reg_write(nvt
, CIR_RX_LIMIT_COUNT
& 0xff, CIR_WAKE_SLCL
);
579 /* set cir wake fifo rx trigger level (currently 67) */
580 nvt_cir_wake_reg_write(nvt
, CIR_WAKE_FIFOCON_RX_TRIGGER_LEV
,
584 * Enable TX and RX, specific carrier on = low, off = high, and set
585 * sample period (currently 50us)
587 nvt_cir_wake_reg_write(nvt
, CIR_WAKE_IRCON_MODE0
| CIR_WAKE_IRCON_RXEN
|
588 CIR_WAKE_IRCON_R
| CIR_WAKE_IRCON_RXINV
|
589 CIR_WAKE_IRCON_SAMPLE_PERIOD_SEL
,
592 /* clear cir wake rx fifo */
593 nvt_clear_cir_wake_fifo(nvt
);
595 /* clear any and all stray interrupts */
596 nvt_cir_wake_reg_write(nvt
, 0xff, CIR_WAKE_IRSTS
);
598 /* enable the CIR WAKE logical device */
599 nvt_enable_logical_dev(nvt
, LOGICAL_DEV_CIR_WAKE
);
602 static void nvt_enable_wake(struct nvt_dev
*nvt
)
608 nvt_select_logical_dev(nvt
, LOGICAL_DEV_ACPI
);
609 nvt_set_reg_bit(nvt
, CIR_WAKE_ENABLE_BIT
, CR_ACPI_CIR_WAKE
);
610 nvt_set_reg_bit(nvt
, PME_INTR_CIR_PASS_BIT
, CR_ACPI_IRQ_EVENTS2
);
612 nvt_select_logical_dev(nvt
, LOGICAL_DEV_CIR_WAKE
);
613 nvt_cr_write(nvt
, LOGICAL_DEV_ENABLE
, CR_LOGICAL_DEV_EN
);
615 nvt_efm_disable(nvt
);
617 spin_lock_irqsave(&nvt
->nvt_lock
, flags
);
619 nvt_cir_wake_reg_write(nvt
, CIR_WAKE_IRCON_MODE0
| CIR_WAKE_IRCON_RXEN
|
620 CIR_WAKE_IRCON_R
| CIR_WAKE_IRCON_RXINV
|
621 CIR_WAKE_IRCON_SAMPLE_PERIOD_SEL
,
623 nvt_cir_wake_reg_write(nvt
, 0xff, CIR_WAKE_IRSTS
);
624 nvt_cir_wake_reg_write(nvt
, 0, CIR_WAKE_IREN
);
626 spin_unlock_irqrestore(&nvt
->nvt_lock
, flags
);
629 #if 0 /* Currently unused */
630 /* rx carrier detect only works in learning mode, must be called w/nvt_lock */
631 static u32
nvt_rx_carrier_detect(struct nvt_dev
*nvt
)
633 u32 count
, carrier
, duration
= 0;
636 count
= nvt_cir_reg_read(nvt
, CIR_FCCL
) |
637 nvt_cir_reg_read(nvt
, CIR_FCCH
) << 8;
639 for (i
= 0; i
< nvt
->pkts
; i
++) {
640 if (nvt
->buf
[i
] & BUF_PULSE_BIT
)
641 duration
+= nvt
->buf
[i
] & BUF_LEN_MASK
;
644 duration
*= SAMPLE_PERIOD
;
646 if (!count
|| !duration
) {
647 dev_notice(&nvt
->pdev
->dev
,
648 "Unable to determine carrier! (c:%u, d:%u)",
653 carrier
= MS_TO_NS(count
) / duration
;
655 if ((carrier
> MAX_CARRIER
) || (carrier
< MIN_CARRIER
))
656 nvt_dbg("WTF? Carrier frequency out of range!");
658 nvt_dbg("Carrier frequency: %u (count %u, duration %u)",
659 carrier
, count
, duration
);
665 * set carrier frequency
667 * set carrier on 2 registers: CP & CC
668 * always set CP as 0x81
669 * set CC by SPEC, CC = 3MHz/carrier - 1
671 static int nvt_set_tx_carrier(struct rc_dev
*dev
, u32 carrier
)
673 struct nvt_dev
*nvt
= dev
->priv
;
679 nvt_cir_reg_write(nvt
, 1, CIR_CP
);
680 val
= 3000000 / (carrier
) - 1;
681 nvt_cir_reg_write(nvt
, val
& 0xff, CIR_CC
);
683 nvt_dbg("cp: 0x%x cc: 0x%x\n",
684 nvt_cir_reg_read(nvt
, CIR_CP
), nvt_cir_reg_read(nvt
, CIR_CC
));
692 * 1) clean TX fifo first (handled by AP)
693 * 2) copy data from user space
694 * 3) disable RX interrupts, enable TX interrupts: TTR & TFU
695 * 4) send 9 packets to TX FIFO to open TTR
696 * in interrupt_handler:
697 * 5) send all data out
698 * go back to write():
699 * 6) disable TX interrupts, re-enable RX interupts
701 * The key problem of this function is user space data may larger than
702 * driver's data buf length. So nvt_tx_ir() will only copy TX_BUF_LEN data to
703 * buf, and keep current copied data buf num in cur_buf_num. But driver's buf
704 * number may larger than TXFCONT (0xff). So in interrupt_handler, it has to
705 * set TXFCONT as 0xff, until buf_count less than 0xff.
707 static int nvt_tx_ir(struct rc_dev
*dev
, unsigned *txbuf
, unsigned n
)
709 struct nvt_dev
*nvt
= dev
->priv
;
715 spin_lock_irqsave(&nvt
->tx
.lock
, flags
);
717 ret
= min((unsigned)(TX_BUF_LEN
/ sizeof(unsigned)), n
);
718 nvt
->tx
.buf_count
= (ret
* sizeof(unsigned));
720 memcpy(nvt
->tx
.buf
, txbuf
, nvt
->tx
.buf_count
);
722 nvt
->tx
.cur_buf_num
= 0;
724 /* save currently enabled interrupts */
725 iren
= nvt_cir_reg_read(nvt
, CIR_IREN
);
727 /* now disable all interrupts, save TFU & TTR */
728 nvt_cir_reg_write(nvt
, CIR_IREN_TFU
| CIR_IREN_TTR
, CIR_IREN
);
730 nvt
->tx
.tx_state
= ST_TX_REPLY
;
732 nvt_cir_reg_write(nvt
, CIR_FIFOCON_TX_TRIGGER_LEV_8
|
733 CIR_FIFOCON_RXFIFOCLR
, CIR_FIFOCON
);
735 /* trigger TTR interrupt by writing out ones, (yes, it's ugly) */
736 for (i
= 0; i
< 9; i
++)
737 nvt_cir_reg_write(nvt
, 0x01, CIR_STXFIFO
);
739 spin_unlock_irqrestore(&nvt
->tx
.lock
, flags
);
741 wait_event(nvt
->tx
.queue
, nvt
->tx
.tx_state
== ST_TX_REQUEST
);
743 spin_lock_irqsave(&nvt
->tx
.lock
, flags
);
744 nvt
->tx
.tx_state
= ST_TX_NONE
;
745 spin_unlock_irqrestore(&nvt
->tx
.lock
, flags
);
747 /* restore enabled interrupts to prior state */
748 nvt_cir_reg_write(nvt
, iren
, CIR_IREN
);
753 /* dump contents of the last rx buffer we got from the hw rx fifo */
754 static void nvt_dump_rx_buf(struct nvt_dev
*nvt
)
758 printk(KERN_DEBUG
"%s (len %d): ", __func__
, nvt
->pkts
);
759 for (i
= 0; (i
< nvt
->pkts
) && (i
< RX_BUF_LEN
); i
++)
760 printk(KERN_CONT
"0x%02x ", nvt
->buf
[i
]);
761 printk(KERN_CONT
"\n");
765 * Process raw data in rx driver buffer, store it in raw IR event kfifo,
766 * trigger decode when appropriate.
768 * We get IR data samples one byte at a time. If the msb is set, its a pulse,
769 * otherwise its a space. The lower 7 bits are the count of SAMPLE_PERIOD
770 * (default 50us) intervals for that pulse/space. A discrete signal is
771 * followed by a series of 0x7f packets, then either 0x7<something> or 0x80
772 * to signal more IR coming (repeats) or end of IR, respectively. We store
773 * sample data in the raw event kfifo until we see 0x7<something> (except f)
774 * or 0x80, at which time, we trigger a decode operation.
776 static void nvt_process_rx_ir_data(struct nvt_dev
*nvt
)
778 DEFINE_IR_RAW_EVENT(rawir
);
782 nvt_dbg_verbose("%s firing", __func__
);
785 nvt_dump_rx_buf(nvt
);
787 nvt_dbg_verbose("Processing buffer of len %d", nvt
->pkts
);
789 init_ir_raw_event(&rawir
);
791 for (i
= 0; i
< nvt
->pkts
; i
++) {
792 sample
= nvt
->buf
[i
];
794 rawir
.pulse
= ((sample
& BUF_PULSE_BIT
) != 0);
795 rawir
.duration
= US_TO_NS((sample
& BUF_LEN_MASK
)
798 nvt_dbg("Storing %s with duration %d",
799 rawir
.pulse
? "pulse" : "space", rawir
.duration
);
801 ir_raw_event_store_with_filter(nvt
->rdev
, &rawir
);
804 * BUF_PULSE_BIT indicates end of IR data, BUF_REPEAT_BYTE
805 * indicates end of IR signal, but new data incoming. In both
806 * cases, it means we're ready to call ir_raw_event_handle
808 if ((sample
== BUF_PULSE_BIT
) && (i
+ 1 < nvt
->pkts
)) {
809 nvt_dbg("Calling ir_raw_event_handle (signal end)\n");
810 ir_raw_event_handle(nvt
->rdev
);
816 nvt_dbg("Calling ir_raw_event_handle (buffer empty)\n");
817 ir_raw_event_handle(nvt
->rdev
);
819 nvt_dbg_verbose("%s done", __func__
);
822 static void nvt_handle_rx_fifo_overrun(struct nvt_dev
*nvt
)
824 dev_warn(&nvt
->pdev
->dev
, "RX FIFO overrun detected, flushing data!");
827 nvt_clear_cir_fifo(nvt
);
828 ir_raw_event_reset(nvt
->rdev
);
831 /* copy data from hardware rx fifo into driver buffer */
832 static void nvt_get_rx_ir_data(struct nvt_dev
*nvt
)
838 /* Get count of how many bytes to read from RX FIFO */
839 fifocount
= nvt_cir_reg_read(nvt
, CIR_RXFCONT
);
840 /* if we get 0xff, probably means the logical dev is disabled */
841 if (fifocount
== 0xff)
844 nvt_dbg("attempting to fetch %u bytes from hw rx fifo", fifocount
);
848 /* This should never happen, but lets check anyway... */
849 if (b_idx
+ fifocount
> RX_BUF_LEN
) {
850 nvt_process_rx_ir_data(nvt
);
854 /* Read fifocount bytes from CIR Sample RX FIFO register */
855 for (i
= 0; i
< fifocount
; i
++) {
856 val
= nvt_cir_reg_read(nvt
, CIR_SRXFIFO
);
857 nvt
->buf
[b_idx
+ i
] = val
;
860 nvt
->pkts
+= fifocount
;
861 nvt_dbg("%s: pkts now %d", __func__
, nvt
->pkts
);
863 nvt_process_rx_ir_data(nvt
);
866 static void nvt_cir_log_irqs(u8 status
, u8 iren
)
868 nvt_dbg("IRQ 0x%02x (IREN 0x%02x) :%s%s%s%s%s%s%s%s%s",
870 status
& CIR_IRSTS_RDR
? " RDR" : "",
871 status
& CIR_IRSTS_RTR
? " RTR" : "",
872 status
& CIR_IRSTS_PE
? " PE" : "",
873 status
& CIR_IRSTS_RFO
? " RFO" : "",
874 status
& CIR_IRSTS_TE
? " TE" : "",
875 status
& CIR_IRSTS_TTR
? " TTR" : "",
876 status
& CIR_IRSTS_TFU
? " TFU" : "",
877 status
& CIR_IRSTS_GH
? " GH" : "",
878 status
& ~(CIR_IRSTS_RDR
| CIR_IRSTS_RTR
| CIR_IRSTS_PE
|
879 CIR_IRSTS_RFO
| CIR_IRSTS_TE
| CIR_IRSTS_TTR
|
880 CIR_IRSTS_TFU
| CIR_IRSTS_GH
) ? " ?" : "");
883 static bool nvt_cir_tx_inactive(struct nvt_dev
*nvt
)
888 spin_lock_irqsave(&nvt
->tx
.lock
, flags
);
889 tx_state
= nvt
->tx
.tx_state
;
890 spin_unlock_irqrestore(&nvt
->tx
.lock
, flags
);
892 return tx_state
== ST_TX_NONE
;
895 /* interrupt service routine for incoming and outgoing CIR data */
896 static irqreturn_t
nvt_cir_isr(int irq
, void *data
)
898 struct nvt_dev
*nvt
= data
;
899 u8 status
, iren
, cur_state
;
902 nvt_dbg_verbose("%s firing", __func__
);
904 spin_lock_irqsave(&nvt
->nvt_lock
, flags
);
907 * Get IR Status register contents. Write 1 to ack/clear
909 * bit: reg name - description
910 * 7: CIR_IRSTS_RDR - RX Data Ready
911 * 6: CIR_IRSTS_RTR - RX FIFO Trigger Level Reach
912 * 5: CIR_IRSTS_PE - Packet End
913 * 4: CIR_IRSTS_RFO - RX FIFO Overrun (RDR will also be set)
914 * 3: CIR_IRSTS_TE - TX FIFO Empty
915 * 2: CIR_IRSTS_TTR - TX FIFO Trigger Level Reach
916 * 1: CIR_IRSTS_TFU - TX FIFO Underrun
917 * 0: CIR_IRSTS_GH - Min Length Detected
919 status
= nvt_cir_reg_read(nvt
, CIR_IRSTS
);
920 iren
= nvt_cir_reg_read(nvt
, CIR_IREN
);
922 /* IRQ may be shared with CIR WAKE, therefore check for each
923 * status bit whether the related interrupt source is enabled
925 if (!(status
& iren
)) {
926 spin_unlock_irqrestore(&nvt
->nvt_lock
, flags
);
927 nvt_dbg_verbose("%s exiting, IRSTS 0x0", __func__
);
931 /* ack/clear all irq flags we've got */
932 nvt_cir_reg_write(nvt
, status
, CIR_IRSTS
);
933 nvt_cir_reg_write(nvt
, 0, CIR_IRSTS
);
935 nvt_cir_log_irqs(status
, iren
);
937 if (status
& CIR_IRSTS_RFO
)
938 nvt_handle_rx_fifo_overrun(nvt
);
940 if (status
& CIR_IRSTS_RTR
) {
941 /* FIXME: add code for study/learn mode */
942 /* We only do rx if not tx'ing */
943 if (nvt_cir_tx_inactive(nvt
))
944 nvt_get_rx_ir_data(nvt
);
947 if (status
& CIR_IRSTS_PE
) {
948 if (nvt_cir_tx_inactive(nvt
))
949 nvt_get_rx_ir_data(nvt
);
951 cur_state
= nvt
->study_state
;
953 if (cur_state
== ST_STUDY_NONE
)
954 nvt_clear_cir_fifo(nvt
);
957 spin_unlock_irqrestore(&nvt
->nvt_lock
, flags
);
959 if (status
& CIR_IRSTS_TE
)
960 nvt_clear_tx_fifo(nvt
);
962 if (status
& CIR_IRSTS_TTR
) {
963 unsigned int pos
, count
;
966 spin_lock_irqsave(&nvt
->tx
.lock
, flags
);
968 pos
= nvt
->tx
.cur_buf_num
;
969 count
= nvt
->tx
.buf_count
;
971 /* Write data into the hardware tx fifo while pos < count */
973 nvt_cir_reg_write(nvt
, nvt
->tx
.buf
[pos
], CIR_STXFIFO
);
974 nvt
->tx
.cur_buf_num
++;
975 /* Disable TX FIFO Trigger Level Reach (TTR) interrupt */
977 tmp
= nvt_cir_reg_read(nvt
, CIR_IREN
);
978 nvt_cir_reg_write(nvt
, tmp
& ~CIR_IREN_TTR
, CIR_IREN
);
981 spin_unlock_irqrestore(&nvt
->tx
.lock
, flags
);
985 if (status
& CIR_IRSTS_TFU
) {
986 spin_lock_irqsave(&nvt
->tx
.lock
, flags
);
987 if (nvt
->tx
.tx_state
== ST_TX_REPLY
) {
988 nvt
->tx
.tx_state
= ST_TX_REQUEST
;
989 wake_up(&nvt
->tx
.queue
);
991 spin_unlock_irqrestore(&nvt
->tx
.lock
, flags
);
994 nvt_dbg_verbose("%s done", __func__
);
998 static void nvt_disable_cir(struct nvt_dev
*nvt
)
1000 unsigned long flags
;
1002 spin_lock_irqsave(&nvt
->nvt_lock
, flags
);
1004 /* disable CIR interrupts */
1005 nvt_cir_reg_write(nvt
, 0, CIR_IREN
);
1007 /* clear any and all pending interrupts */
1008 nvt_cir_reg_write(nvt
, 0xff, CIR_IRSTS
);
1010 /* clear all function enable flags */
1011 nvt_cir_reg_write(nvt
, 0, CIR_IRCON
);
1013 /* clear hardware rx and tx fifos */
1014 nvt_clear_cir_fifo(nvt
);
1015 nvt_clear_tx_fifo(nvt
);
1017 spin_unlock_irqrestore(&nvt
->nvt_lock
, flags
);
1019 /* disable the CIR logical device */
1020 nvt_disable_logical_dev(nvt
, LOGICAL_DEV_CIR
);
1023 static int nvt_open(struct rc_dev
*dev
)
1025 struct nvt_dev
*nvt
= dev
->priv
;
1026 unsigned long flags
;
1028 spin_lock_irqsave(&nvt
->nvt_lock
, flags
);
1030 /* set function enable flags */
1031 nvt_cir_reg_write(nvt
, CIR_IRCON_TXEN
| CIR_IRCON_RXEN
|
1032 CIR_IRCON_RXINV
| CIR_IRCON_SAMPLE_PERIOD_SEL
,
1035 /* clear all pending interrupts */
1036 nvt_cir_reg_write(nvt
, 0xff, CIR_IRSTS
);
1038 /* enable interrupts */
1039 nvt_set_cir_iren(nvt
);
1041 spin_unlock_irqrestore(&nvt
->nvt_lock
, flags
);
1043 /* enable the CIR logical device */
1044 nvt_enable_logical_dev(nvt
, LOGICAL_DEV_CIR
);
1049 static void nvt_close(struct rc_dev
*dev
)
1051 struct nvt_dev
*nvt
= dev
->priv
;
1053 nvt_disable_cir(nvt
);
1056 /* Allocate memory, probe hardware, and initialize everything */
1057 static int nvt_probe(struct pnp_dev
*pdev
, const struct pnp_device_id
*dev_id
)
1059 struct nvt_dev
*nvt
;
1060 struct rc_dev
*rdev
;
1063 nvt
= devm_kzalloc(&pdev
->dev
, sizeof(struct nvt_dev
), GFP_KERNEL
);
1067 /* input device for IR remote (and tx) */
1068 rdev
= rc_allocate_device();
1070 goto exit_free_dev_rdev
;
1073 /* activate pnp device */
1074 if (pnp_activate_dev(pdev
) < 0) {
1075 dev_err(&pdev
->dev
, "Could not activate PNP device!\n");
1076 goto exit_free_dev_rdev
;
1079 /* validate pnp resources */
1080 if (!pnp_port_valid(pdev
, 0) ||
1081 pnp_port_len(pdev
, 0) < CIR_IOREG_LENGTH
) {
1082 dev_err(&pdev
->dev
, "IR PNP Port not valid!\n");
1083 goto exit_free_dev_rdev
;
1086 if (!pnp_irq_valid(pdev
, 0)) {
1087 dev_err(&pdev
->dev
, "PNP IRQ not valid!\n");
1088 goto exit_free_dev_rdev
;
1091 if (!pnp_port_valid(pdev
, 1) ||
1092 pnp_port_len(pdev
, 1) < CIR_IOREG_LENGTH
) {
1093 dev_err(&pdev
->dev
, "Wake PNP Port not valid!\n");
1094 goto exit_free_dev_rdev
;
1097 nvt
->cir_addr
= pnp_port_start(pdev
, 0);
1098 nvt
->cir_irq
= pnp_irq(pdev
, 0);
1100 nvt
->cir_wake_addr
= pnp_port_start(pdev
, 1);
1102 nvt
->cr_efir
= CR_EFIR
;
1103 nvt
->cr_efdr
= CR_EFDR
;
1105 spin_lock_init(&nvt
->nvt_lock
);
1106 spin_lock_init(&nvt
->tx
.lock
);
1108 pnp_set_drvdata(pdev
, nvt
);
1111 init_waitqueue_head(&nvt
->tx
.queue
);
1113 ret
= nvt_hw_detect(nvt
);
1115 goto exit_free_dev_rdev
;
1117 /* Initialize CIR & CIR Wake Logical Devices */
1118 nvt_efm_enable(nvt
);
1119 nvt_cir_ldev_init(nvt
);
1120 nvt_cir_wake_ldev_init(nvt
);
1121 nvt_efm_disable(nvt
);
1124 * Initialize CIR & CIR Wake Config Registers
1125 * and enable logical devices
1127 nvt_cir_regs_init(nvt
);
1128 nvt_cir_wake_regs_init(nvt
);
1130 /* Set up the rc device */
1132 rdev
->driver_type
= RC_DRIVER_IR_RAW
;
1133 rdev
->allowed_protocols
= RC_BIT_ALL
;
1134 rdev
->open
= nvt_open
;
1135 rdev
->close
= nvt_close
;
1136 rdev
->tx_ir
= nvt_tx_ir
;
1137 rdev
->s_tx_carrier
= nvt_set_tx_carrier
;
1138 rdev
->input_name
= "Nuvoton w836x7hg Infrared Remote Transceiver";
1139 rdev
->input_phys
= "nuvoton/cir0";
1140 rdev
->input_id
.bustype
= BUS_HOST
;
1141 rdev
->input_id
.vendor
= PCI_VENDOR_ID_WINBOND2
;
1142 rdev
->input_id
.product
= nvt
->chip_major
;
1143 rdev
->input_id
.version
= nvt
->chip_minor
;
1144 rdev
->dev
.parent
= &pdev
->dev
;
1145 rdev
->driver_name
= NVT_DRIVER_NAME
;
1146 rdev
->map_name
= RC_MAP_RC6_MCE
;
1147 rdev
->timeout
= MS_TO_NS(100);
1148 /* rx resolution is hardwired to 50us atm, 1, 25, 100 also possible */
1149 rdev
->rx_resolution
= US_TO_NS(CIR_SAMPLE_PERIOD
);
1151 rdev
->min_timeout
= XYZ
;
1152 rdev
->max_timeout
= XYZ
;
1154 rdev
->tx_resolution
= XYZ
;
1158 ret
= rc_register_device(rdev
);
1160 goto exit_free_dev_rdev
;
1163 /* now claim resources */
1164 if (!devm_request_region(&pdev
->dev
, nvt
->cir_addr
,
1165 CIR_IOREG_LENGTH
, NVT_DRIVER_NAME
))
1166 goto exit_unregister_device
;
1168 if (devm_request_irq(&pdev
->dev
, nvt
->cir_irq
, nvt_cir_isr
,
1169 IRQF_SHARED
, NVT_DRIVER_NAME
, (void *)nvt
))
1170 goto exit_unregister_device
;
1172 if (!devm_request_region(&pdev
->dev
, nvt
->cir_wake_addr
,
1173 CIR_IOREG_LENGTH
, NVT_DRIVER_NAME
"-wake"))
1174 goto exit_unregister_device
;
1176 ret
= device_create_file(&rdev
->dev
, &dev_attr_wakeup_data
);
1178 goto exit_unregister_device
;
1180 device_init_wakeup(&pdev
->dev
, true);
1182 dev_notice(&pdev
->dev
, "driver has been successfully loaded\n");
1185 cir_wake_dump_regs(nvt
);
1190 exit_unregister_device
:
1191 rc_unregister_device(rdev
);
1194 rc_free_device(rdev
);
1199 static void nvt_remove(struct pnp_dev
*pdev
)
1201 struct nvt_dev
*nvt
= pnp_get_drvdata(pdev
);
1203 device_remove_file(&nvt
->rdev
->dev
, &dev_attr_wakeup_data
);
1205 nvt_disable_cir(nvt
);
1207 /* enable CIR Wake (for IR power-on) */
1208 nvt_enable_wake(nvt
);
1210 rc_unregister_device(nvt
->rdev
);
1213 static int nvt_suspend(struct pnp_dev
*pdev
, pm_message_t state
)
1215 struct nvt_dev
*nvt
= pnp_get_drvdata(pdev
);
1216 unsigned long flags
;
1218 nvt_dbg("%s called", __func__
);
1220 spin_lock_irqsave(&nvt
->tx
.lock
, flags
);
1221 nvt
->tx
.tx_state
= ST_TX_NONE
;
1222 spin_unlock_irqrestore(&nvt
->tx
.lock
, flags
);
1224 spin_lock_irqsave(&nvt
->nvt_lock
, flags
);
1226 /* zero out misc state tracking */
1227 nvt
->study_state
= ST_STUDY_NONE
;
1228 nvt
->wake_state
= ST_WAKE_NONE
;
1230 /* disable all CIR interrupts */
1231 nvt_cir_reg_write(nvt
, 0, CIR_IREN
);
1233 spin_unlock_irqrestore(&nvt
->nvt_lock
, flags
);
1235 /* disable cir logical dev */
1236 nvt_disable_logical_dev(nvt
, LOGICAL_DEV_CIR
);
1238 /* make sure wake is enabled */
1239 nvt_enable_wake(nvt
);
1244 static int nvt_resume(struct pnp_dev
*pdev
)
1246 struct nvt_dev
*nvt
= pnp_get_drvdata(pdev
);
1248 nvt_dbg("%s called", __func__
);
1250 nvt_cir_regs_init(nvt
);
1251 nvt_cir_wake_regs_init(nvt
);
1256 static void nvt_shutdown(struct pnp_dev
*pdev
)
1258 struct nvt_dev
*nvt
= pnp_get_drvdata(pdev
);
1260 nvt_enable_wake(nvt
);
1263 static const struct pnp_device_id nvt_ids
[] = {
1264 { "WEC0530", 0 }, /* CIR */
1265 { "NTN0530", 0 }, /* CIR for new chip's pnp id*/
1269 static struct pnp_driver nvt_driver
= {
1270 .name
= NVT_DRIVER_NAME
,
1271 .id_table
= nvt_ids
,
1272 .flags
= PNP_DRIVER_RES_DO_NOT_CHANGE
,
1274 .remove
= nvt_remove
,
1275 .suspend
= nvt_suspend
,
1276 .resume
= nvt_resume
,
1277 .shutdown
= nvt_shutdown
,
1280 module_param(debug
, int, S_IRUGO
| S_IWUSR
);
1281 MODULE_PARM_DESC(debug
, "Enable debugging output");
1283 MODULE_DEVICE_TABLE(pnp
, nvt_ids
);
1284 MODULE_DESCRIPTION("Nuvoton W83667HG-A & W83677HG-I CIR driver");
1286 MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
1287 MODULE_LICENSE("GPL");
1289 module_pnp_driver(nvt_driver
);