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-rw-r--r--drivers/media/rc/Kconfig12
-rw-r--r--drivers/media/rc/Makefile1
-rw-r--r--drivers/media/rc/fintek-cir.c684
-rw-r--r--drivers/media/rc/fintek-cir.h243
4 files changed, 940 insertions, 0 deletions
diff --git a/drivers/media/rc/Kconfig b/drivers/media/rc/Kconfig
index 154c337f00fd..7d4bbc226d06 100644
--- a/drivers/media/rc/Kconfig
+++ b/drivers/media/rc/Kconfig
@@ -148,6 +148,18 @@ config IR_ITE_CIR
148 To compile this driver as a module, choose M here: the 148 To compile this driver as a module, choose M here: the
149 module will be called ite-cir. 149 module will be called ite-cir.
150 150
151config IR_FINTEK
152 tristate "Fintek Consumer Infrared Transceiver"
153 depends on PNP
154 depends on RC_CORE
155 ---help---
156 Say Y here to enable support for integrated infrared receiver
157 /transciever made by Fintek. This chip is found on assorted
158 Jetway motherboards (and of course, possibly others).
159
160 To compile this driver as a module, choose M here: the
161 module will be called fintek-cir.
162
151config IR_NUVOTON 163config IR_NUVOTON
152 tristate "Nuvoton w836x7hg Consumer Infrared Transceiver" 164 tristate "Nuvoton w836x7hg Consumer Infrared Transceiver"
153 depends on PNP 165 depends on PNP
diff --git a/drivers/media/rc/Makefile b/drivers/media/rc/Makefile
index 1f90a219a162..52830e5f4eaa 100644
--- a/drivers/media/rc/Makefile
+++ b/drivers/media/rc/Makefile
@@ -16,6 +16,7 @@ obj-$(CONFIG_IR_LIRC_CODEC) += ir-lirc-codec.o
16obj-$(CONFIG_IR_IMON) += imon.o 16obj-$(CONFIG_IR_IMON) += imon.o
17obj-$(CONFIG_IR_ITE_CIR) += ite-cir.o 17obj-$(CONFIG_IR_ITE_CIR) += ite-cir.o
18obj-$(CONFIG_IR_MCEUSB) += mceusb.o 18obj-$(CONFIG_IR_MCEUSB) += mceusb.o
19obj-$(CONFIG_IR_FINTEK) += fintek-cir.o
19obj-$(CONFIG_IR_NUVOTON) += nuvoton-cir.o 20obj-$(CONFIG_IR_NUVOTON) += nuvoton-cir.o
20obj-$(CONFIG_IR_ENE) += ene_ir.o 21obj-$(CONFIG_IR_ENE) += ene_ir.o
21obj-$(CONFIG_IR_REDRAT3) += redrat3.o 22obj-$(CONFIG_IR_REDRAT3) += redrat3.o
diff --git a/drivers/media/rc/fintek-cir.c b/drivers/media/rc/fintek-cir.c
new file mode 100644
index 000000000000..8fa539dde1b4
--- /dev/null
+++ b/drivers/media/rc/fintek-cir.c
@@ -0,0 +1,684 @@
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 */
39static 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 */
48static 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 */
61static 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 */
68static 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 */
75static 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 */
83static 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 */
92static 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 */
98static 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 */
104static 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 */
117static 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 */
140static 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
200static 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 */
217static void fintek_enable_cir_irq(struct fintek_dev *fintek)
218{
219 fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_EN, CIR_STATUS);
220}
221
222static 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
231static 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
248static 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 */
280static 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 */
336static 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
365static 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 */
376static 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
417static 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
437static 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
448static 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
460static 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 */
471static 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
563failure:
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
575static 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
597static int fintek_suspend(struct pnp_dev *pdev, pm_message_t state)
598{
599 struct fintek_dev *fintek = pnp_get_drvdata(pdev);
600
601 fit_dbg("%s called", __func__);
602
603 /* disable all CIR interrupts */
604 fintek_cir_reg_write(fintek, CIR_STATUS_IRQ_MASK, CIR_STATUS);
605
606 fintek_config_mode_enable(fintek);
607
608 /* disable cir logical dev */
609 fintek_select_logical_dev(fintek, LOGICAL_DEV_CIR);
610 fintek_cr_write(fintek, LOGICAL_DEV_DISABLE, CIR_CR_DEV_EN);
611
612 fintek_config_mode_disable(fintek);
613
614 /* make sure wake is enabled */
615 fintek_enable_wake(fintek);
616
617 return 0;
618}
619
620static int fintek_resume(struct pnp_dev *pdev)
621{
622 int ret = 0;
623 struct fintek_dev *fintek = pnp_get_drvdata(pdev);
624
625 fit_dbg("%s called", __func__);
626
627 /* open interrupt */
628 fintek_enable_cir_irq(fintek);
629
630 /* Enable CIR logical device */
631 fintek_config_mode_enable(fintek);
632 fintek_select_logical_dev(fintek, LOGICAL_DEV_CIR);
633 fintek_cr_write(fintek, LOGICAL_DEV_ENABLE, CIR_CR_DEV_EN);
634
635 fintek_config_mode_disable(fintek);
636
637 fintek_cir_regs_init(fintek);
638
639 return ret;
640}
641
642static void fintek_shutdown(struct pnp_dev *pdev)
643{
644 struct fintek_dev *fintek = pnp_get_drvdata(pdev);
645 fintek_enable_wake(fintek);
646}
647
648static const struct pnp_device_id fintek_ids[] = {
649 { "FIT0002", 0 }, /* CIR */
650 { "", 0 },
651};
652
653static struct pnp_driver fintek_driver = {
654 .name = FINTEK_DRIVER_NAME,
655 .id_table = fintek_ids,
656 .flags = PNP_DRIVER_RES_DO_NOT_CHANGE,
657 .probe = fintek_probe,
658 .remove = __devexit_p(fintek_remove),
659 .suspend = fintek_suspend,
660 .resume = fintek_resume,
661 .shutdown = fintek_shutdown,
662};
663
664int fintek_init(void)
665{
666 return pnp_register_driver(&fintek_driver);
667}
668
669void fintek_exit(void)
670{
671 pnp_unregister_driver(&fintek_driver);
672}
673
674module_param(debug, int, S_IRUGO | S_IWUSR);
675MODULE_PARM_DESC(debug, "Enable debugging output");
676
677MODULE_DEVICE_TABLE(pnp, fintek_ids);
678MODULE_DESCRIPTION(FINTEK_DESCRIPTION " driver");
679
680MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
681MODULE_LICENSE("GPL");
682
683module_init(fintek_init);
684module_exit(fintek_exit);
diff --git a/drivers/media/rc/fintek-cir.h b/drivers/media/rc/fintek-cir.h
new file mode 100644
index 000000000000..1b10b2011f5e
--- /dev/null
+++ b/drivers/media/rc/fintek-cir.h
@@ -0,0 +1,243 @@
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/spinlock.h>
27#include <linux/ioctl.h>
28
29/* platform driver name to register */
30#define FINTEK_DRIVER_NAME "fintek-cir"
31#define FINTEK_DESCRIPTION "Fintek LPC SuperIO Consumer IR Transceiver"
32#define VENDOR_ID_FINTEK 0x1934
33
34
35/* debugging module parameter */
36static int debug;
37
38#define fit_pr(level, text, ...) \
39 printk(level KBUILD_MODNAME ": " text, ## __VA_ARGS__)
40
41#define fit_dbg(text, ...) \
42 if (debug) \
43 printk(KERN_DEBUG \
44 KBUILD_MODNAME ": " text "\n" , ## __VA_ARGS__)
45
46#define fit_dbg_verbose(text, ...) \
47 if (debug > 1) \
48 printk(KERN_DEBUG \
49 KBUILD_MODNAME ": " text "\n" , ## __VA_ARGS__)
50
51#define fit_dbg_wake(text, ...) \
52 if (debug > 2) \
53 printk(KERN_DEBUG \
54 KBUILD_MODNAME ": " text "\n" , ## __VA_ARGS__)
55
56
57#define TX_BUF_LEN 256
58#define RX_BUF_LEN 32
59
60struct fintek_dev {
61 struct pnp_dev *pdev;
62 struct rc_dev *rdev;
63
64 spinlock_t fintek_lock;
65
66 /* for rx */
67 u8 buf[RX_BUF_LEN];
68 unsigned int pkts;
69
70 struct {
71 spinlock_t lock;
72 u8 buf[TX_BUF_LEN];
73 unsigned int buf_count;
74 unsigned int cur_buf_num;
75 wait_queue_head_t queue;
76 } tx;
77
78 /* Config register index/data port pair */
79 u8 cr_ip;
80 u8 cr_dp;
81
82 /* hardware I/O settings */
83 unsigned long cir_addr;
84 int cir_irq;
85 int cir_port_len;
86
87 /* hardware id */
88 u8 chip_major;
89 u8 chip_minor;
90 u16 chip_vendor;
91
92 /* hardware features */
93 bool hw_learning_capable;
94 bool hw_tx_capable;
95
96 /* rx settings */
97 bool learning_enabled;
98 bool carrier_detect_enabled;
99
100 enum {
101 CMD_HEADER = 0,
102 SUBCMD,
103 CMD_DATA,
104 PARSE_IRDATA,
105 } parser_state;
106
107 u8 cmd, rem;
108
109 /* carrier period = 1 / frequency */
110 u32 carrier;
111};
112
113/* buffer packet constants, largely identical to mceusb.c */
114#define BUF_PULSE_BIT 0x80
115#define BUF_LEN_MASK 0x1f
116#define BUF_SAMPLE_MASK 0x7f
117
118#define BUF_COMMAND_HEADER 0x9f
119#define BUF_COMMAND_MASK 0xe0
120#define BUF_COMMAND_NULL 0x00
121#define BUF_HW_CMD_HEADER 0xff
122#define BUF_CMD_G_REVISION 0x0b
123#define BUF_CMD_S_CARRIER 0x06
124#define BUF_CMD_S_TIMEOUT 0x0c
125#define BUF_CMD_SIG_END 0x01
126#define BUF_CMD_S_TXMASK 0x08
127#define BUF_CMD_S_RXSENSOR 0x14
128#define BUF_RSP_PULSE_COUNT 0x15
129
130#define CIR_SAMPLE_PERIOD 50
131
132/*
133 * Configuration Register:
134 * Index Port
135 * Data Port
136 */
137#define CR_INDEX_PORT 0x2e
138#define CR_DATA_PORT 0x2f
139
140/* Possible alternate values, depends on how the chip is wired */
141#define CR_INDEX_PORT2 0x4e
142#define CR_DATA_PORT2 0x4f
143
144/*
145 * GCR_CONFIG_PORT_SEL bit 4 specifies which Index Port value is
146 * active. 1 = 0x4e, 0 = 0x2e
147 */
148#define PORT_SEL_PORT_4E_EN 0x10
149
150/* Extended Function Mode enable/disable magic values */
151#define CONFIG_REG_ENABLE 0x87
152#define CONFIG_REG_DISABLE 0xaa
153
154/* Chip IDs found in CR_CHIP_ID_{HI,LO} */
155#define CHIP_ID_HIGH_F71809U 0x04
156#define CHIP_ID_LOW_F71809U 0x08
157
158/*
159 * Global control regs we need to care about:
160 * Global Control def.
161 * Register name addr val. */
162#define GCR_SOFTWARE_RESET 0x02 /* 0x00 */
163#define GCR_LOGICAL_DEV_NO 0x07 /* 0x00 */
164#define GCR_CHIP_ID_HI 0x20 /* 0x04 */
165#define GCR_CHIP_ID_LO 0x21 /* 0x08 */
166#define GCR_VENDOR_ID_HI 0x23 /* 0x19 */
167#define GCR_VENDOR_ID_LO 0x24 /* 0x34 */
168#define GCR_CONFIG_PORT_SEL 0x25 /* 0x01 */
169#define GCR_KBMOUSE_WAKEUP 0x27
170
171#define LOGICAL_DEV_DISABLE 0x00
172#define LOGICAL_DEV_ENABLE 0x01
173
174/* Logical device number of the CIR function */
175#define LOGICAL_DEV_CIR 0x05
176
177/* CIR Logical Device (LDN 0x08) config registers */
178#define CIR_CR_COMMAND_INDEX 0x04
179#define CIR_CR_IRCS 0x05 /* Before host writes command to IR, host
180 must set to 1. When host finshes write
181 command to IR, host must clear to 0. */
182#define CIR_CR_COMMAND_DATA 0x06 /* Host read or write comand data */
183#define CIR_CR_CLASS 0x07 /* 0xff = rx-only, 0x66 = rx + 2 tx,
184 0x33 = rx + 1 tx */
185#define CIR_CR_DEV_EN 0x30 /* bit0 = 1 enables CIR */
186#define CIR_CR_BASE_ADDR_HI 0x60 /* MSB of CIR IO base addr */
187#define CIR_CR_BASE_ADDR_LO 0x61 /* LSB of CIR IO base addr */
188#define CIR_CR_IRQ_SEL 0x70 /* bits3-0 store CIR IRQ */
189#define CIR_CR_PSOUT_STATUS 0xf1
190#define CIR_CR_WAKE_KEY3_ADDR 0xf8
191#define CIR_CR_WAKE_KEY3_CODE 0xf9
192#define CIR_CR_WAKE_KEY3_DC 0xfa
193#define CIR_CR_WAKE_CONTROL 0xfb
194#define CIR_CR_WAKE_KEY12_ADDR 0xfc
195#define CIR_CR_WAKE_KEY4_ADDR 0xfd
196#define CIR_CR_WAKE_KEY5_ADDR 0xfe
197
198#define CLASS_RX_ONLY 0xff
199#define CLASS_RX_2TX 0x66
200#define CLASS_RX_1TX 0x33
201
202/* CIR device registers */
203#define CIR_STATUS 0x00
204#define CIR_RX_DATA 0x01
205#define CIR_TX_CONTROL 0x02
206#define CIR_TX_DATA 0x03
207#define CIR_CONTROL 0x04
208
209/* Bits to enable CIR wake */
210#define LOGICAL_DEV_ACPI 0x01
211#define LDEV_ACPI_WAKE_EN_REG 0xe8
212#define ACPI_WAKE_EN_CIR_BIT 0x04
213
214#define LDEV_ACPI_PME_EN_REG 0xf0
215#define LDEV_ACPI_PME_CLR_REG 0xf1
216#define ACPI_PME_CIR_BIT 0x02
217
218#define LDEV_ACPI_STATE_REG 0xf4
219#define ACPI_STATE_CIR_BIT 0x20
220
221/*
222 * CIR status register (0x00):
223 * 7 - CIR_IRQ_EN (1 = enable CIR IRQ, 0 = disable)
224 * 3 - TX_FINISH (1 when TX finished, write 1 to clear)
225 * 2 - TX_UNDERRUN (1 on TX underrun, write 1 to clear)
226 * 1 - RX_TIMEOUT (1 on RX timeout, write 1 to clear)
227 * 0 - RX_RECEIVE (1 on RX receive, write 1 to clear)
228 */
229#define CIR_STATUS_IRQ_EN 0x80
230#define CIR_STATUS_TX_FINISH 0x08
231#define CIR_STATUS_TX_UNDERRUN 0x04
232#define CIR_STATUS_RX_TIMEOUT 0x02
233#define CIR_STATUS_RX_RECEIVE 0x01
234#define CIR_STATUS_IRQ_MASK 0x0f
235
236/*
237 * CIR TX control register (0x02):
238 * 7 - TX_START (1 to indicate TX start, auto-cleared when done)
239 * 6 - TX_END (1 to indicate TX data written to TX fifo)
240 */
241#define CIR_TX_CONTROL_TX_START 0x80
242#define CIR_TX_CONTROL_TX_END 0x40
243
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-31 09:10:17 -0500