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path: root/drivers/media/IR/ir-lirc-codec.c
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Diffstat (limited to 'drivers/media/IR/ir-lirc-codec.c')
-rw-r--r--drivers/media/IR/ir-lirc-codec.c354
1 files changed, 0 insertions, 354 deletions
diff --git a/drivers/media/IR/ir-lirc-codec.c b/drivers/media/IR/ir-lirc-codec.c
deleted file mode 100644
index e63f757d5d7..00000000000
--- a/drivers/media/IR/ir-lirc-codec.c
+++ /dev/null
@@ -1,354 +0,0 @@
-/* ir-lirc-codec.c - ir-core to classic lirc interface bridge
- *
- * Copyright (C) 2010 by Jarod Wilson <jarod@redhat.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- */
-
-#include <linux/sched.h>
-#include <linux/wait.h>
-#include <media/lirc.h>
-#include <media/lirc_dev.h>
-#include <media/ir-core.h>
-#include "ir-core-priv.h"
-
-#define LIRCBUF_SIZE 256
-
-/**
- * ir_lirc_decode() - Send raw IR data to lirc_dev to be relayed to the
- * lircd userspace daemon for decoding.
- * @input_dev: the struct input_dev descriptor of the device
- * @duration: the struct ir_raw_event descriptor of the pulse/space
- *
- * This function returns -EINVAL if the lirc interfaces aren't wired up.
- */
-static int ir_lirc_decode(struct input_dev *input_dev, struct ir_raw_event ev)
-{
- struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
- int sample;
-
- if (!(ir_dev->raw->enabled_protocols & IR_TYPE_LIRC))
- return 0;
-
- if (!ir_dev->raw->lirc.drv || !ir_dev->raw->lirc.drv->rbuf)
- return -EINVAL;
-
- if (IS_RESET(ev))
- return 0;
-
- IR_dprintk(2, "LIRC data transfer started (%uus %s)\n",
- TO_US(ev.duration), TO_STR(ev.pulse));
-
- sample = ev.duration / 1000;
- if (ev.pulse)
- sample |= PULSE_BIT;
-
- lirc_buffer_write(ir_dev->raw->lirc.drv->rbuf,
- (unsigned char *) &sample);
- wake_up(&ir_dev->raw->lirc.drv->rbuf->wait_poll);
-
-
- return 0;
-}
-
-static ssize_t ir_lirc_transmit_ir(struct file *file, const char *buf,
- size_t n, loff_t *ppos)
-{
- struct lirc_codec *lirc;
- struct ir_input_dev *ir_dev;
- int *txbuf; /* buffer with values to transmit */
- int ret = 0, count;
-
- lirc = lirc_get_pdata(file);
- if (!lirc)
- return -EFAULT;
-
- if (n % sizeof(int))
- return -EINVAL;
-
- count = n / sizeof(int);
- if (count > LIRCBUF_SIZE || count % 2 == 0)
- return -EINVAL;
-
- txbuf = memdup_user(buf, n);
- if (IS_ERR(txbuf))
- return PTR_ERR(txbuf);
-
- ir_dev = lirc->ir_dev;
- if (!ir_dev) {
- ret = -EFAULT;
- goto out;
- }
-
- if (ir_dev->props && ir_dev->props->tx_ir)
- ret = ir_dev->props->tx_ir(ir_dev->props->priv, txbuf, (u32)n);
-
-out:
- kfree(txbuf);
- return ret;
-}
-
-static long ir_lirc_ioctl(struct file *filep, unsigned int cmd,
- unsigned long __user arg)
-{
- struct lirc_codec *lirc;
- struct ir_input_dev *ir_dev;
- int ret = 0;
- void *drv_data;
- unsigned long val = 0;
-
- lirc = lirc_get_pdata(filep);
- if (!lirc)
- return -EFAULT;
-
- ir_dev = lirc->ir_dev;
- if (!ir_dev || !ir_dev->props || !ir_dev->props->priv)
- return -EFAULT;
-
- drv_data = ir_dev->props->priv;
-
- if (_IOC_DIR(cmd) & _IOC_WRITE) {
- ret = get_user(val, (unsigned long *)arg);
- if (ret)
- return ret;
- }
-
- switch (cmd) {
-
- /* legacy support */
- case LIRC_GET_SEND_MODE:
- val = LIRC_CAN_SEND_PULSE & LIRC_CAN_SEND_MASK;
- break;
-
- case LIRC_SET_SEND_MODE:
- if (val != (LIRC_MODE_PULSE & LIRC_CAN_SEND_MASK))
- return -EINVAL;
- break;
-
- /* TX settings */
- case LIRC_SET_TRANSMITTER_MASK:
- if (ir_dev->props->s_tx_mask)
- ret = ir_dev->props->s_tx_mask(drv_data, (u32)val);
- else
- return -EINVAL;
- break;
-
- case LIRC_SET_SEND_CARRIER:
- if (ir_dev->props->s_tx_carrier)
- ir_dev->props->s_tx_carrier(drv_data, (u32)val);
- else
- return -EINVAL;
- break;
-
- case LIRC_SET_SEND_DUTY_CYCLE:
- if (!ir_dev->props->s_tx_duty_cycle)
- return -ENOSYS;
-
- if (val <= 0 || val >= 100)
- return -EINVAL;
-
- ir_dev->props->s_tx_duty_cycle(ir_dev->props->priv, val);
- break;
-
- /* RX settings */
- case LIRC_SET_REC_CARRIER:
- if (ir_dev->props->s_rx_carrier_range)
- ret = ir_dev->props->s_rx_carrier_range(
- ir_dev->props->priv,
- ir_dev->raw->lirc.carrier_low, val);
- else
- return -ENOSYS;
-
- if (!ret)
- ir_dev->raw->lirc.carrier_low = 0;
- break;
-
- case LIRC_SET_REC_CARRIER_RANGE:
- if (val >= 0)
- ir_dev->raw->lirc.carrier_low = val;
- break;
-
-
- case LIRC_GET_REC_RESOLUTION:
- val = ir_dev->props->rx_resolution;
- break;
-
- case LIRC_SET_WIDEBAND_RECEIVER:
- if (ir_dev->props->s_learning_mode)
- return ir_dev->props->s_learning_mode(
- ir_dev->props->priv, !!val);
- else
- return -ENOSYS;
-
- /* Generic timeout support */
- case LIRC_GET_MIN_TIMEOUT:
- if (!ir_dev->props->max_timeout)
- return -ENOSYS;
- val = ir_dev->props->min_timeout / 1000;
- break;
-
- case LIRC_GET_MAX_TIMEOUT:
- if (!ir_dev->props->max_timeout)
- return -ENOSYS;
- val = ir_dev->props->max_timeout / 1000;
- break;
-
- case LIRC_SET_REC_TIMEOUT:
- if (val < ir_dev->props->min_timeout ||
- val > ir_dev->props->max_timeout)
- return -EINVAL;
- ir_dev->props->timeout = val * 1000;
- break;
-
- default:
- return lirc_dev_fop_ioctl(filep, cmd, arg);
- }
-
- if (_IOC_DIR(cmd) & _IOC_READ)
- ret = put_user(val, (unsigned long *)arg);
-
- return ret;
-}
-
-static int ir_lirc_open(void *data)
-{
- return 0;
-}
-
-static void ir_lirc_close(void *data)
-{
- return;
-}
-
-static struct file_operations lirc_fops = {
- .owner = THIS_MODULE,
- .write = ir_lirc_transmit_ir,
- .unlocked_ioctl = ir_lirc_ioctl,
- .read = lirc_dev_fop_read,
- .poll = lirc_dev_fop_poll,
- .open = lirc_dev_fop_open,
- .release = lirc_dev_fop_close,
-};
-
-static int ir_lirc_register(struct input_dev *input_dev)
-{
- struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
- struct lirc_driver *drv;
- struct lirc_buffer *rbuf;
- int rc = -ENOMEM;
- unsigned long features;
-
- drv = kzalloc(sizeof(struct lirc_driver), GFP_KERNEL);
- if (!drv)
- return rc;
-
- rbuf = kzalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
- if (!rbuf)
- goto rbuf_alloc_failed;
-
- rc = lirc_buffer_init(rbuf, sizeof(int), LIRCBUF_SIZE);
- if (rc)
- goto rbuf_init_failed;
-
- features = LIRC_CAN_REC_MODE2;
- if (ir_dev->props->tx_ir) {
-
- features |= LIRC_CAN_SEND_PULSE;
- if (ir_dev->props->s_tx_mask)
- features |= LIRC_CAN_SET_TRANSMITTER_MASK;
- if (ir_dev->props->s_tx_carrier)
- features |= LIRC_CAN_SET_SEND_CARRIER;
-
- if (ir_dev->props->s_tx_duty_cycle)
- features |= LIRC_CAN_SET_SEND_DUTY_CYCLE;
- }
-
- if (ir_dev->props->s_rx_carrier_range)
- features |= LIRC_CAN_SET_REC_CARRIER |
- LIRC_CAN_SET_REC_CARRIER_RANGE;
-
- if (ir_dev->props->s_learning_mode)
- features |= LIRC_CAN_USE_WIDEBAND_RECEIVER;
-
- if (ir_dev->props->max_timeout)
- features |= LIRC_CAN_SET_REC_TIMEOUT;
-
-
- snprintf(drv->name, sizeof(drv->name), "ir-lirc-codec (%s)",
- ir_dev->driver_name);
- drv->minor = -1;
- drv->features = features;
- drv->data = &ir_dev->raw->lirc;
- drv->rbuf = rbuf;
- drv->set_use_inc = &ir_lirc_open;
- drv->set_use_dec = &ir_lirc_close;
- drv->code_length = sizeof(struct ir_raw_event) * 8;
- drv->fops = &lirc_fops;
- drv->dev = &ir_dev->dev;
- drv->owner = THIS_MODULE;
-
- drv->minor = lirc_register_driver(drv);
- if (drv->minor < 0) {
- rc = -ENODEV;
- goto lirc_register_failed;
- }
-
- ir_dev->raw->lirc.drv = drv;
- ir_dev->raw->lirc.ir_dev = ir_dev;
- return 0;
-
-lirc_register_failed:
-rbuf_init_failed:
- kfree(rbuf);
-rbuf_alloc_failed:
- kfree(drv);
-
- return rc;
-}
-
-static int ir_lirc_unregister(struct input_dev *input_dev)
-{
- struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
- struct lirc_codec *lirc = &ir_dev->raw->lirc;
-
- lirc_unregister_driver(lirc->drv->minor);
- lirc_buffer_free(lirc->drv->rbuf);
- kfree(lirc->drv);
-
- return 0;
-}
-
-static struct ir_raw_handler lirc_handler = {
- .protocols = IR_TYPE_LIRC,
- .decode = ir_lirc_decode,
- .raw_register = ir_lirc_register,
- .raw_unregister = ir_lirc_unregister,
-};
-
-static int __init ir_lirc_codec_init(void)
-{
- ir_raw_handler_register(&lirc_handler);
-
- printk(KERN_INFO "IR LIRC bridge handler initialized\n");
- return 0;
-}
-
-static void __exit ir_lirc_codec_exit(void)
-{
- ir_raw_handler_unregister(&lirc_handler);
-}
-
-module_init(ir_lirc_codec_init);
-module_exit(ir_lirc_codec_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Jarod Wilson <jarod@redhat.com>");
-MODULE_AUTHOR("Red Hat Inc. (http://www.redhat.com)");
-MODULE_DESCRIPTION("LIRC IR handler bridge");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2026-01-08 22:05:39 +0000