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path: root/ANDROID_3.4.5/drivers/media/rc/rc-loopback.c
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Diffstat (limited to 'ANDROID_3.4.5/drivers/media/rc/rc-loopback.c')
-rw-r--r--ANDROID_3.4.5/drivers/media/rc/rc-loopback.c259
1 files changed, 0 insertions, 259 deletions
diff --git a/ANDROID_3.4.5/drivers/media/rc/rc-loopback.c b/ANDROID_3.4.5/drivers/media/rc/rc-loopback.c
deleted file mode 100644
index efc6a514..00000000
--- a/ANDROID_3.4.5/drivers/media/rc/rc-loopback.c
+++ /dev/null
@@ -1,259 +0,0 @@
-/*
- * Loopback driver for rc-core,
- *
- * Copyright (c) 2010 David Härdeman <david@hardeman.nu>
- *
- * This driver receives TX data and passes it back as RX data,
- * which is useful for (scripted) debugging of rc-core without
- * having to use actual hardware.
- *
- * 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; either version 2 of the License, or
- * (at your option) any later version.
- *
- * 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.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-#include <linux/device.h>
-#include <linux/module.h>
-#include <linux/sched.h>
-#include <media/rc-core.h>
-
-#define DRIVER_NAME "rc-loopback"
-#define dprintk(x...) if (debug) printk(KERN_INFO DRIVER_NAME ": " x)
-#define RXMASK_REGULAR 0x1
-#define RXMASK_LEARNING 0x2
-
-static bool debug;
-
-struct loopback_dev {
- struct rc_dev *dev;
- u32 txmask;
- u32 txcarrier;
- u32 txduty;
- bool idle;
- bool learning;
- bool carrierreport;
- u32 rxcarriermin;
- u32 rxcarriermax;
-};
-
-static struct loopback_dev loopdev;
-
-static int loop_set_tx_mask(struct rc_dev *dev, u32 mask)
-{
- struct loopback_dev *lodev = dev->priv;
-
- if ((mask & (RXMASK_REGULAR | RXMASK_LEARNING)) != mask) {
- dprintk("invalid tx mask: %u\n", mask);
- return -EINVAL;
- }
-
- dprintk("setting tx mask: %u\n", mask);
- lodev->txmask = mask;
- return 0;
-}
-
-static int loop_set_tx_carrier(struct rc_dev *dev, u32 carrier)
-{
- struct loopback_dev *lodev = dev->priv;
-
- dprintk("setting tx carrier: %u\n", carrier);
- lodev->txcarrier = carrier;
- return 0;
-}
-
-static int loop_set_tx_duty_cycle(struct rc_dev *dev, u32 duty_cycle)
-{
- struct loopback_dev *lodev = dev->priv;
-
- if (duty_cycle < 1 || duty_cycle > 99) {
- dprintk("invalid duty cycle: %u\n", duty_cycle);
- return -EINVAL;
- }
-
- dprintk("setting duty cycle: %u\n", duty_cycle);
- lodev->txduty = duty_cycle;
- return 0;
-}
-
-static int loop_set_rx_carrier_range(struct rc_dev *dev, u32 min, u32 max)
-{
- struct loopback_dev *lodev = dev->priv;
-
- if (min < 1 || min > max) {
- dprintk("invalid rx carrier range %u to %u\n", min, max);
- return -EINVAL;
- }
-
- dprintk("setting rx carrier range %u to %u\n", min, max);
- lodev->rxcarriermin = min;
- lodev->rxcarriermax = max;
- return 0;
-}
-
-static int loop_tx_ir(struct rc_dev *dev, unsigned *txbuf, unsigned count)
-{
- struct loopback_dev *lodev = dev->priv;
- u32 rxmask;
- unsigned total_duration = 0;
- unsigned i;
- DEFINE_IR_RAW_EVENT(rawir);
-
- for (i = 0; i < count; i++)
- total_duration += abs(txbuf[i]);
-
- if (total_duration == 0) {
- dprintk("invalid tx data, total duration zero\n");
- return -EINVAL;
- }
-
- if (lodev->txcarrier < lodev->rxcarriermin ||
- lodev->txcarrier > lodev->rxcarriermax) {
- dprintk("ignoring tx, carrier out of range\n");
- goto out;
- }
-
- if (lodev->learning)
- rxmask = RXMASK_LEARNING;
- else
- rxmask = RXMASK_REGULAR;
-
- if (!(rxmask & lodev->txmask)) {
- dprintk("ignoring tx, rx mask mismatch\n");
- goto out;
- }
-
- for (i = 0; i < count; i++) {
- rawir.pulse = i % 2 ? false : true;
- rawir.duration = txbuf[i] * 1000;
- if (rawir.duration)
- ir_raw_event_store_with_filter(dev, &rawir);
- }
-
- /* Fake a silence long enough to cause us to go idle */
- rawir.pulse = false;
- rawir.duration = dev->timeout;
- ir_raw_event_store_with_filter(dev, &rawir);
-
- ir_raw_event_handle(dev);
-
-out:
- /* Lirc expects this function to take as long as the total duration */
- set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(usecs_to_jiffies(total_duration));
- return count;
-}
-
-static void loop_set_idle(struct rc_dev *dev, bool enable)
-{
- struct loopback_dev *lodev = dev->priv;
-
- if (lodev->idle != enable) {
- dprintk("%sing idle mode\n", enable ? "enter" : "exit");
- lodev->idle = enable;
- }
-}
-
-static int loop_set_learning_mode(struct rc_dev *dev, int enable)
-{
- struct loopback_dev *lodev = dev->priv;
-
- if (lodev->learning != enable) {
- dprintk("%sing learning mode\n", enable ? "enter" : "exit");
- lodev->learning = !!enable;
- }
-
- return 0;
-}
-
-static int loop_set_carrier_report(struct rc_dev *dev, int enable)
-{
- struct loopback_dev *lodev = dev->priv;
-
- if (lodev->carrierreport != enable) {
- dprintk("%sabling carrier reports\n", enable ? "en" : "dis");
- lodev->carrierreport = !!enable;
- }
-
- return 0;
-}
-
-static int __init loop_init(void)
-{
- struct rc_dev *rc;
- int ret;
-
- rc = rc_allocate_device();
- if (!rc) {
- printk(KERN_ERR DRIVER_NAME ": rc_dev allocation failed\n");
- return -ENOMEM;
- }
-
- rc->input_name = "rc-core loopback device";
- rc->input_phys = "rc-core/virtual";
- rc->input_id.bustype = BUS_VIRTUAL;
- rc->input_id.version = 1;
- rc->driver_name = DRIVER_NAME;
- rc->map_name = RC_MAP_EMPTY;
- rc->priv = &loopdev;
- rc->driver_type = RC_DRIVER_IR_RAW;
- rc->allowed_protos = RC_TYPE_ALL;
- rc->timeout = 100 * 1000 * 1000; /* 100 ms */
- rc->min_timeout = 1;
- rc->max_timeout = UINT_MAX;
- rc->rx_resolution = 1000;
- rc->tx_resolution = 1000;
- rc->s_tx_mask = loop_set_tx_mask;
- rc->s_tx_carrier = loop_set_tx_carrier;
- rc->s_tx_duty_cycle = loop_set_tx_duty_cycle;
- rc->s_rx_carrier_range = loop_set_rx_carrier_range;
- rc->tx_ir = loop_tx_ir;
- rc->s_idle = loop_set_idle;
- rc->s_learning_mode = loop_set_learning_mode;
- rc->s_carrier_report = loop_set_carrier_report;
- rc->priv = &loopdev;
-
- loopdev.txmask = RXMASK_REGULAR;
- loopdev.txcarrier = 36000;
- loopdev.txduty = 50;
- loopdev.rxcarriermin = 1;
- loopdev.rxcarriermax = ~0;
- loopdev.idle = true;
- loopdev.learning = false;
- loopdev.carrierreport = false;
-
- ret = rc_register_device(rc);
- if (ret < 0) {
- printk(KERN_ERR DRIVER_NAME ": rc_dev registration failed\n");
- rc_free_device(rc);
- return ret;
- }
-
- loopdev.dev = rc;
- return 0;
-}
-
-static void __exit loop_exit(void)
-{
- rc_unregister_device(loopdev.dev);
-}
-
-module_init(loop_init);
-module_exit(loop_exit);
-
-module_param(debug, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Enable debug messages");
-
-MODULE_DESCRIPTION("Loopback device for rc-core debugging");
-MODULE_AUTHOR("David Härdeman <david@hardeman.nu>");
-MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2025-06-01 12:17:46 +0000