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author | James Morris <jmorris@namei.org> | 2011-01-09 23:46:24 +0100 |
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committer | James Morris <jmorris@namei.org> | 2011-01-09 23:46:24 +0100 |
commit | d2e7ad19229f982fc1eb731827d82ceac90abfb3 (patch) | |
tree | 98a3741b4d4b27a48b3c7ea9babe331e539416a8 /drivers/media/IR/ir-functions.c | |
parent | MAINTAINERS: Add tomoyo-dev-en ML. (diff) | |
parent | Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/hch/... (diff) | |
download | linux-d2e7ad19229f982fc1eb731827d82ceac90abfb3.tar.xz linux-d2e7ad19229f982fc1eb731827d82ceac90abfb3.zip |
Merge branch 'master' into next
Conflicts:
security/smack/smack_lsm.c
Verified and added fix by Stephen Rothwell <sfr@canb.auug.org.au>
Ok'd by Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'drivers/media/IR/ir-functions.c')
-rw-r--r-- | drivers/media/IR/ir-functions.c | 356 |
1 files changed, 0 insertions, 356 deletions
diff --git a/drivers/media/IR/ir-functions.c b/drivers/media/IR/ir-functions.c deleted file mode 100644 index db591e421887..000000000000 --- a/drivers/media/IR/ir-functions.c +++ /dev/null @@ -1,356 +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/string.h> -#include <linux/jiffies.h> -#include <media/ir-common.h> -#include "ir-core-priv.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 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 down=%d\n", - dev->name, ir->ir_key, ir->keypressed); - return; - } - IR_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); -} - -/* -------------------------------------------------------------------------- */ - -int ir_input_init(struct input_dev *dev, struct ir_input_state *ir, - const u64 ir_type) -{ - ir->ir_type = ir_type; - - if (repeat) - set_bit(EV_REP, dev->evbit); - - return 0; -} -EXPORT_SYMBOL_GPL(ir_input_init); - - -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); - } -} -EXPORT_SYMBOL_GPL(ir_input_nokey); - -void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir, - u32 ir_key) -{ - u32 keycode = ir_g_keycode_from_table(dev, 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->keycode = keycode; - ir->keypressed = 1; - ir_input_key_event(dev,ir); - } -} -EXPORT_SYMBOL_GPL(ir_input_keydown); - -/* -------------------------------------------------------------------------- */ -/* extract mask bits out of data and pack them into the result */ -u32 ir_extract_bits(u32 data, u32 mask) -{ - u32 vbit = 1, value = 0; - - do { - if (mask&1) { - if (data&1) - value |= vbit; - vbit<<=1; - } - data>>=1; - } while (mask>>=1); - - return value; -} -EXPORT_SYMBOL_GPL(ir_extract_bits); - -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; -} -EXPORT_SYMBOL_GPL(ir_dump_samples); - -/* 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; -} -EXPORT_SYMBOL_GPL(ir_decode_pulsedistance); - -/* 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_decode_biphase); - -/* RC5 decoding stuff, moved from bttv-input.c to share it with - * saa7134 */ - -/* decode raw bit pattern to RC5 code */ -u32 ir_rc5_decode(unsigned int code) -{ - unsigned int org_code = code; - unsigned int pair; - unsigned int rc5 = 0; - int i; - - for (i = 0; i < 14; ++i) { - pair = code & 0x3; - code >>= 2; - - rc5 <<= 1; - switch (pair) { - case 0: - case 2: - break; - case 1: - rc5 |= 1; - break; - case 3: - IR_dprintk(1, "ir-common: ir_rc5_decode(%x) bad code\n", org_code); - return 0; - } - } - IR_dprintk(1, "ir-common: code=%x, rc5=%x, start=%x, toggle=%x, address=%x, " - "instr=%x\n", rc5, org_code, RC5_START(rc5), - RC5_TOGGLE(rc5), RC5_ADDR(rc5), RC5_INSTR(rc5)); - return rc5; -} -EXPORT_SYMBOL_GPL(ir_rc5_decode); - -void ir_rc5_timer_end(unsigned long data) -{ - struct card_ir *ir = (struct card_ir *)data; - struct timeval tv; - unsigned long current_jiffies, timeout; - u32 gap; - u32 rc5 = 0; - - /* get time */ - current_jiffies = jiffies; - do_gettimeofday(&tv); - - /* avoid overflow with gap >1s */ - if (tv.tv_sec - ir->base_time.tv_sec > 1) { - gap = 200000; - } else { - gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) + - tv.tv_usec - ir->base_time.tv_usec; - } - - /* signal we're ready to start a new code */ - ir->active = 0; - - /* Allow some timer jitter (RC5 is ~24ms anyway so this is ok) */ - if (gap < 28000) { - IR_dprintk(1, "ir-common: spurious timer_end\n"); - return; - } - - if (ir->last_bit < 20) { - /* ignore spurious codes (caused by light/other remotes) */ - IR_dprintk(1, "ir-common: short code: %x\n", ir->code); - } else { - ir->code = (ir->code << ir->shift_by) | 1; - rc5 = ir_rc5_decode(ir->code); - - /* two start bits? */ - if (RC5_START(rc5) != ir->start) { - IR_dprintk(1, "ir-common: rc5 start bits invalid: %u\n", RC5_START(rc5)); - - /* right address? */ - } else if (RC5_ADDR(rc5) == ir->addr) { - u32 toggle = RC5_TOGGLE(rc5); - u32 instr = RC5_INSTR(rc5); - - /* Good code, decide if repeat/repress */ - if (toggle != RC5_TOGGLE(ir->last_rc5) || - instr != RC5_INSTR(ir->last_rc5)) { - IR_dprintk(1, "ir-common: instruction %x, toggle %x\n", instr, - toggle); - ir_input_nokey(ir->dev, &ir->ir); - ir_input_keydown(ir->dev, &ir->ir, instr); - } - - /* Set/reset key-up timer */ - timeout = current_jiffies + - msecs_to_jiffies(ir->rc5_key_timeout); - mod_timer(&ir->timer_keyup, timeout); - - /* Save code for repeat test */ - ir->last_rc5 = rc5; - } - } -} -EXPORT_SYMBOL_GPL(ir_rc5_timer_end); - -void ir_rc5_timer_keyup(unsigned long data) -{ - struct card_ir *ir = (struct card_ir *)data; - - IR_dprintk(1, "ir-common: key released\n"); - ir_input_nokey(ir->dev, &ir->ir); -} -EXPORT_SYMBOL_GPL(ir_rc5_timer_keyup); |