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Diffstat (limited to 'drivers/media/common/ir-functions.c')
-rw-r--r--drivers/media/common/ir-functions.c271
1 files changed, 0 insertions, 271 deletions
diff --git a/drivers/media/common/ir-functions.c b/drivers/media/common/ir-functions.c
deleted file mode 100644
index 8eaa88fd8b9..00000000000
--- a/drivers/media/common/ir-functions.c
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- *
- * some common structs and functions to handle infrared remotes via
- * input layer ...
- *
- * (c) 2003 Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]
- *
- * 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/module.h>
-#include <linux/moduleparam.h>
-#include <linux/string.h>
-#include <media/ir-common.h>
-
-/* -------------------------------------------------------------------------- */
-
-MODULE_AUTHOR("Gerd Knorr <kraxel@bytesex.org> [SuSE Labs]");
-MODULE_LICENSE("GPL");
-
-static int repeat = 1;
-module_param(repeat, int, 0444);
-MODULE_PARM_DESC(repeat,"auto-repeat for IR keys (default: on)");
-
-static int debug = 0; /* debug level (0,1,2) */
-module_param(debug, int, 0644);
-
-#define dprintk(level, fmt, arg...) if (debug >= level) \
- printk(KERN_DEBUG fmt , ## arg)
-
-/* -------------------------------------------------------------------------- */
-
-static void ir_input_key_event(struct input_dev *dev, struct ir_input_state *ir)
-{
- if (KEY_RESERVED == ir->keycode) {
- printk(KERN_INFO "%s: unknown key: key=0x%02x raw=0x%02x down=%d\n",
- dev->name,ir->ir_key,ir->ir_raw,ir->keypressed);
- return;
- }
- dprintk(1,"%s: key event code=%d down=%d\n",
- dev->name,ir->keycode,ir->keypressed);
- input_report_key(dev,ir->keycode,ir->keypressed);
- input_sync(dev);
-}
-
-/* -------------------------------------------------------------------------- */
-
-void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
- int ir_type, IR_KEYTAB_TYPE *ir_codes)
-{
- int i;
-
- ir->ir_type = ir_type;
- if (ir_codes)
- memcpy(ir->ir_codes, ir_codes, sizeof(ir->ir_codes));
-
-
- dev->keycode = ir->ir_codes;
- dev->keycodesize = sizeof(IR_KEYTAB_TYPE);
- dev->keycodemax = IR_KEYTAB_SIZE;
- for (i = 0; i < IR_KEYTAB_SIZE; i++)
- set_bit(ir->ir_codes[i], dev->keybit);
- clear_bit(0, dev->keybit);
-
- set_bit(EV_KEY, dev->evbit);
- if (repeat)
- set_bit(EV_REP, dev->evbit);
-}
-
-void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir)
-{
- if (ir->keypressed) {
- ir->keypressed = 0;
- ir_input_key_event(dev,ir);
- }
-}
-
-void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir,
- u32 ir_key, u32 ir_raw)
-{
- u32 keycode = IR_KEYCODE(ir->ir_codes, ir_key);
-
- if (ir->keypressed && ir->keycode != keycode) {
- ir->keypressed = 0;
- ir_input_key_event(dev,ir);
- }
- if (!ir->keypressed) {
- ir->ir_key = ir_key;
- ir->ir_raw = ir_raw;
- ir->keycode = keycode;
- ir->keypressed = 1;
- ir_input_key_event(dev,ir);
- }
-}
-
-/* -------------------------------------------------------------------------- */
-
-u32 ir_extract_bits(u32 data, u32 mask)
-{
- int mbit, vbit;
- u32 value;
-
- value = 0;
- vbit = 0;
- for (mbit = 0; mbit < 32; mbit++) {
- if (!(mask & ((u32)1 << mbit)))
- continue;
- if (data & ((u32)1 << mbit))
- value |= (1 << vbit);
- vbit++;
- }
- return value;
-}
-
-static int inline getbit(u32 *samples, int bit)
-{
- return (samples[bit/32] & (1 << (31-(bit%32)))) ? 1 : 0;
-}
-
-/* sump raw samples for visual debugging ;) */
-int ir_dump_samples(u32 *samples, int count)
-{
- int i, bit, start;
-
- printk(KERN_DEBUG "ir samples: ");
- start = 0;
- for (i = 0; i < count * 32; i++) {
- bit = getbit(samples,i);
- if (bit)
- start = 1;
- if (0 == start)
- continue;
- printk("%s", bit ? "#" : "_");
- }
- printk("\n");
- return 0;
-}
-
-/* decode raw samples, pulse distance coding used by NEC remotes */
-int ir_decode_pulsedistance(u32 *samples, int count, int low, int high)
-{
- int i,last,bit,len;
- u32 curBit;
- u32 value;
-
- /* find start burst */
- for (i = len = 0; i < count * 32; i++) {
- bit = getbit(samples,i);
- if (bit) {
- len++;
- } else {
- if (len >= 29)
- break;
- len = 0;
- }
- }
-
- /* start burst to short */
- if (len < 29)
- return 0xffffffff;
-
- /* find start silence */
- for (len = 0; i < count * 32; i++) {
- bit = getbit(samples,i);
- if (bit) {
- break;
- } else {
- len++;
- }
- }
-
- /* silence to short */
- if (len < 7)
- return 0xffffffff;
-
- /* go decoding */
- len = 0;
- last = 1;
- value = 0; curBit = 1;
- for (; i < count * 32; i++) {
- bit = getbit(samples,i);
- if (last) {
- if(bit) {
- continue;
- } else {
- len = 1;
- }
- } else {
- if (bit) {
- if (len > (low + high) /2)
- value |= curBit;
- curBit <<= 1;
- if (curBit == 1)
- break;
- } else {
- len++;
- }
- }
- last = bit;
- }
-
- return value;
-}
-
-/* decode raw samples, biphase coding, used by rc5 for example */
-int ir_decode_biphase(u32 *samples, int count, int low, int high)
-{
- int i,last,bit,len,flips;
- u32 value;
-
- /* find start bit (1) */
- for (i = 0; i < 32; i++) {
- bit = getbit(samples,i);
- if (bit)
- break;
- }
-
- /* go decoding */
- len = 0;
- flips = 0;
- value = 1;
- for (; i < count * 32; i++) {
- if (len > high)
- break;
- if (flips > 1)
- break;
- last = bit;
- bit = getbit(samples,i);
- if (last == bit) {
- len++;
- continue;
- }
- if (len < low) {
- len++;
- flips++;
- continue;
- }
- value <<= 1;
- value |= bit;
- flips = 0;
- len = 1;
- }
- return value;
-}
-
-EXPORT_SYMBOL_GPL(ir_input_init);
-EXPORT_SYMBOL_GPL(ir_input_nokey);
-EXPORT_SYMBOL_GPL(ir_input_keydown);
-
-EXPORT_SYMBOL_GPL(ir_extract_bits);
-EXPORT_SYMBOL_GPL(ir_dump_samples);
-EXPORT_SYMBOL_GPL(ir_decode_biphase);
-EXPORT_SYMBOL_GPL(ir_decode_pulsedistance);
-
-/*
- * Local variables:
- * c-basic-offset: 8
- * End:
- */
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