/*
* LIRC SIR driver, (C) 2000 Milan Pikula <www@fornax.sk>
*
- * lirc_sir - Device driver for use with SIR (serial infra red)
+ * sir_ir - Device driver for use with SIR (serial infra red)
* mode of IrDA on many notebooks.
*
* This program is free software; you can redistribute it and/or modify
#include <linux/timer.h>
-#include <media/lirc.h>
-#include <media/lirc_dev.h>
+#include <media/rc-core.h>
/* SECTION: Definitions */
static void init_act220(void);
#endif
-#define RBUF_LEN 1024
-#define WBUF_LEN 1024
-
-#define LIRC_DRIVER_NAME "lirc_sir"
-
#define PULSE '['
#ifndef LIRC_SIR_TEKRAM
/* time of last UART data ready interrupt */
static ktime_t last_intr_time;
static int last_value;
+static struct rc_dev *rcdev;
-static DECLARE_WAIT_QUEUE_HEAD(lirc_read_queue);
+static struct platform_device *sir_ir_dev;
static DEFINE_SPINLOCK(hardware_lock);
-static int rx_buf[RBUF_LEN];
-static unsigned int rx_tail, rx_head;
-
static bool debug;
/* SECTION: Prototypes */
/* Communication with user-space */
-static unsigned int lirc_poll(struct file *file, poll_table *wait);
-static ssize_t lirc_read(struct file *file, char __user *buf, size_t count,
- loff_t *ppos);
-static ssize_t lirc_write(struct file *file, const char __user *buf, size_t n,
- loff_t *pos);
-static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
static void add_read_queue(int flag, unsigned long val);
static int init_chrdev(void);
-static void drop_chrdev(void);
/* Hardware */
static irqreturn_t sir_interrupt(int irq, void *dev_id);
static void send_space(unsigned long len);
}
/* SECTION: Communication with user-space */
-
-static unsigned int lirc_poll(struct file *file, poll_table *wait)
-{
- poll_wait(file, &lirc_read_queue, wait);
- if (rx_head != rx_tail)
- return POLLIN | POLLRDNORM;
- return 0;
-}
-
-static ssize_t lirc_read(struct file *file, char __user *buf, size_t count,
- loff_t *ppos)
-{
- int n = 0;
- int retval = 0;
- DECLARE_WAITQUEUE(wait, current);
-
- if (count % sizeof(int))
- return -EINVAL;
-
- add_wait_queue(&lirc_read_queue, &wait);
- set_current_state(TASK_INTERRUPTIBLE);
- while (n < count) {
- if (rx_head != rx_tail) {
- if (copy_to_user(buf + n,
- rx_buf + rx_head,
- sizeof(int))) {
- retval = -EFAULT;
- break;
- }
- rx_head = (rx_head + 1) & (RBUF_LEN - 1);
- n += sizeof(int);
- } else {
- if (file->f_flags & O_NONBLOCK) {
- retval = -EAGAIN;
- break;
- }
- if (signal_pending(current)) {
- retval = -ERESTARTSYS;
- break;
- }
- schedule();
- set_current_state(TASK_INTERRUPTIBLE);
- }
- }
- remove_wait_queue(&lirc_read_queue, &wait);
- set_current_state(TASK_RUNNING);
- return n ? n : retval;
-}
-static ssize_t lirc_write(struct file *file, const char __user *buf, size_t n,
- loff_t *pos)
+static int sir_tx_ir(struct rc_dev *dev, unsigned int *tx_buf,
+ unsigned int count)
{
unsigned long flags;
- int i, count;
- int *tx_buf;
-
- count = n / sizeof(int);
- if (n % sizeof(int) || count % 2 == 0)
- return -EINVAL;
- tx_buf = memdup_user(buf, n);
- if (IS_ERR(tx_buf))
- return PTR_ERR(tx_buf);
- i = 0;
+ int i;
+
local_irq_save(flags);
- while (1) {
- if (i >= count)
- break;
+ for (i = 0; i < count;) {
if (tx_buf[i])
send_pulse(tx_buf[i]);
i++;
i++;
}
local_irq_restore(flags);
- kfree(tx_buf);
- return count;
-}
-
-static long lirc_ioctl(struct file *filep, unsigned int cmd, unsigned long arg)
-{
- u32 __user *uptr = (u32 __user *)arg;
- int retval = 0;
- u32 value = 0;
-
- if (cmd == LIRC_GET_FEATURES)
- value = LIRC_CAN_SEND_PULSE | LIRC_CAN_REC_MODE2;
- else if (cmd == LIRC_GET_SEND_MODE)
- value = LIRC_MODE_PULSE;
- else if (cmd == LIRC_GET_REC_MODE)
- value = LIRC_MODE_MODE2;
-
- switch (cmd) {
- case LIRC_GET_FEATURES:
- case LIRC_GET_SEND_MODE:
- case LIRC_GET_REC_MODE:
- retval = put_user(value, uptr);
- break;
-
- case LIRC_SET_SEND_MODE:
- case LIRC_SET_REC_MODE:
- retval = get_user(value, uptr);
- break;
- default:
- retval = -ENOIOCTLCMD;
-
- }
-
- if (retval)
- return retval;
- if (cmd == LIRC_SET_REC_MODE) {
- if (value != LIRC_MODE_MODE2)
- retval = -ENOSYS;
- } else if (cmd == LIRC_SET_SEND_MODE) {
- if (value != LIRC_MODE_PULSE)
- retval = -ENOSYS;
- }
- return retval;
+ return count;
}
static void add_read_queue(int flag, unsigned long val)
{
- unsigned int new_rx_tail;
- int newval;
+ DEFINE_IR_RAW_EVENT(ev);
pr_debug("add flag %d with val %lu\n", flag, val);
- newval = val & PULSE_MASK;
-
/*
* statistically, pulses are ~TIME_CONST/2 too long. we could
* maybe make this more exact, but this is good enough
*/
if (flag) {
/* pulse */
- if (newval > TIME_CONST/2)
- newval -= TIME_CONST/2;
+ if (val > TIME_CONST / 2)
+ val -= TIME_CONST / 2;
else /* should not ever happen */
- newval = 1;
- newval |= PULSE_BIT;
+ val = 1;
+ ev.pulse = true;
} else {
- newval += TIME_CONST/2;
+ val += TIME_CONST / 2;
}
- new_rx_tail = (rx_tail + 1) & (RBUF_LEN - 1);
- if (new_rx_tail == rx_head) {
- pr_debug("Buffer overrun.\n");
- return;
- }
- rx_buf[rx_tail] = newval;
- rx_tail = new_rx_tail;
- wake_up_interruptible(&lirc_read_queue);
-}
+ ev.duration = US_TO_NS(val);
-static const struct file_operations lirc_fops = {
- .owner = THIS_MODULE,
- .read = lirc_read,
- .write = lirc_write,
- .poll = lirc_poll,
- .unlocked_ioctl = lirc_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = lirc_ioctl,
-#endif
- .open = lirc_dev_fop_open,
- .release = lirc_dev_fop_close,
- .llseek = no_llseek,
-};
-
-static int set_use_inc(void *data)
-{
- return 0;
+ ir_raw_event_store_with_filter(rcdev, &ev);
}
-static void set_use_dec(void *data)
-{
-}
-
-static struct lirc_driver driver = {
- .name = LIRC_DRIVER_NAME,
- .minor = -1,
- .code_length = 1,
- .sample_rate = 0,
- .data = NULL,
- .add_to_buf = NULL,
- .set_use_inc = set_use_inc,
- .set_use_dec = set_use_dec,
- .fops = &lirc_fops,
- .dev = NULL,
- .owner = THIS_MODULE,
-};
-
-static struct platform_device *lirc_sir_dev;
-
static int init_chrdev(void)
{
- driver.dev = &lirc_sir_dev->dev;
- driver.minor = lirc_register_driver(&driver);
- if (driver.minor < 0) {
- pr_err("init_chrdev() failed.\n");
- return -EIO;
- }
- return 0;
-}
-
-static void drop_chrdev(void)
-{
- lirc_unregister_driver(driver.minor);
+ rcdev = devm_rc_allocate_device(&sir_ir_dev->dev, RC_DRIVER_IR_RAW);
+ if (!rcdev)
+ return -ENOMEM;
+
+ rcdev->input_phys = KBUILD_MODNAME "/input0";
+ rcdev->input_id.bustype = BUS_HOST;
+ rcdev->input_id.vendor = 0x0001;
+ rcdev->input_id.product = 0x0001;
+ rcdev->input_id.version = 0x0100;
+ rcdev->tx_ir = sir_tx_ir;
+ rcdev->allowed_protocols = RC_BIT_ALL_IR_DECODER;
+ rcdev->map_name = RC_MAP_RC6_MCE;
+ rcdev->timeout = IR_DEFAULT_TIMEOUT;
+ rcdev->dev.parent = &sir_ir_dev->dev;
+
+ return devm_rc_register_device(&sir_ir_dev->dev, rcdev);
}
/* SECTION: Hardware */
/* determine 'virtual' pulse end: */
pulse_end = min_t(unsigned long,
ktime_us_delta(last, last_intr_time),
- PULSE_MASK);
- dev_dbg(driver.dev, "timeout add %d for %lu usec\n",
- last_value, pulse_end);
+ IR_MAX_DURATION);
+ dev_dbg(&sir_ir_dev->dev, "timeout add %d for %lu usec\n",
+ last_value, pulse_end);
add_read_queue(last_value, pulse_end);
last_value = 0;
last = last_intr_time;
}
spin_unlock_irqrestore(&timer_lock, flags);
+ ir_raw_event_handle(rcdev);
}
static irqreturn_t sir_interrupt(int irq, void *dev_id)
curr_time = ktime_get();
delt = min_t(unsigned long,
ktime_us_delta(last, curr_time),
- PULSE_MASK);
+ IR_MAX_DURATION);
deltintr = min_t(unsigned long,
ktime_us_delta(last_intr_time,
curr_time),
- PULSE_MASK);
- dev_dbg(driver.dev, "t %lu, d %d\n",
- deltintr, (int)data);
+ IR_MAX_DURATION);
+ dev_dbg(&sir_ir_dev->dev, "t %lu, d %d\n",
+ deltintr, (int)data);
/*
* if nothing came in last X cycles,
* it was gap
*/
if (deltintr > TIME_CONST * threshold) {
if (last_value) {
- dev_dbg(driver.dev, "GAP\n");
+ dev_dbg(&sir_ir_dev->dev, "GAP\n");
/* simulate signal change */
add_read_queue(last_value,
delt -
break;
}
}
+ ir_raw_event_handle(rcdev);
return IRQ_RETVAL(IRQ_HANDLED);
}
int retval;
/* get I/O port access and IRQ line */
- if (request_region(io, 8, LIRC_DRIVER_NAME) == NULL) {
+ if (!request_region(io, 8, KBUILD_MODNAME)) {
pr_err("i/o port 0x%.4x already in use.\n", io);
return -EBUSY;
}
retval = request_irq(irq, sir_interrupt, 0,
- LIRC_DRIVER_NAME, NULL);
+ KBUILD_MODNAME, NULL);
if (retval < 0) {
release_region(io, 8);
pr_err("IRQ %d already in use.\n", irq);
}
#endif
-static int init_lirc_sir(void)
+static int init_sir_ir(void)
{
int retval;
- init_waitqueue_head(&lirc_read_queue);
retval = init_port();
if (retval < 0)
return retval;
return 0;
}
-static int lirc_sir_probe(struct platform_device *dev)
+static int sir_ir_probe(struct platform_device *dev)
{
return 0;
}
-static int lirc_sir_remove(struct platform_device *dev)
+static int sir_ir_remove(struct platform_device *dev)
{
return 0;
}
-static struct platform_driver lirc_sir_driver = {
- .probe = lirc_sir_probe,
- .remove = lirc_sir_remove,
+static struct platform_driver sir_ir_driver = {
+ .probe = sir_ir_probe,
+ .remove = sir_ir_remove,
.driver = {
- .name = "lirc_sir",
+ .name = "sir_ir",
},
};
-static int __init lirc_sir_init(void)
+static int __init sir_ir_init(void)
{
int retval;
- retval = platform_driver_register(&lirc_sir_driver);
+ retval = platform_driver_register(&sir_ir_driver);
if (retval) {
pr_err("Platform driver register failed!\n");
return -ENODEV;
}
- lirc_sir_dev = platform_device_alloc("lirc_dev", 0);
- if (!lirc_sir_dev) {
+ sir_ir_dev = platform_device_alloc("sir_ir", 0);
+ if (!sir_ir_dev) {
pr_err("Platform device alloc failed!\n");
retval = -ENOMEM;
goto pdev_alloc_fail;
}
- retval = platform_device_add(lirc_sir_dev);
+ retval = platform_device_add(sir_ir_dev);
if (retval) {
pr_err("Platform device add failed!\n");
retval = -ENODEV;
if (retval < 0)
goto fail;
- retval = init_lirc_sir();
- if (retval) {
- drop_chrdev();
+ retval = init_sir_ir();
+ if (retval)
goto fail;
- }
return 0;
fail:
- platform_device_del(lirc_sir_dev);
+ platform_device_del(sir_ir_dev);
pdev_add_fail:
- platform_device_put(lirc_sir_dev);
+ platform_device_put(sir_ir_dev);
pdev_alloc_fail:
- platform_driver_unregister(&lirc_sir_driver);
+ platform_driver_unregister(&sir_ir_driver);
return retval;
}
-static void __exit lirc_sir_exit(void)
+static void __exit sir_ir_exit(void)
{
drop_hardware();
- drop_chrdev();
drop_port();
- platform_device_unregister(lirc_sir_dev);
- platform_driver_unregister(&lirc_sir_driver);
+ platform_device_unregister(sir_ir_dev);
+ platform_driver_unregister(&sir_ir_driver);
pr_info("Uninstalled.\n");
}
-module_init(lirc_sir_init);
-module_exit(lirc_sir_exit);
+module_init(sir_ir_init);
+module_exit(sir_ir_exit);
#ifdef LIRC_SIR_TEKRAM
MODULE_DESCRIPTION("Infrared receiver driver for Tekram Irmate 210");
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