/*
*
* handle saa7134 IR remotes via linux kernel input layer.
*
* 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/init.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include "saa7134-reg.h"
#include "saa7134.h"
static unsigned int disable_ir;
module_param(disable_ir, int, 0444);
MODULE_PARM_DESC(disable_ir,"disable infrared remote support");
static unsigned int ir_debug;
module_param(ir_debug, int, 0644);
MODULE_PARM_DESC(ir_debug,"enable debug messages [IR]");
static int pinnacle_remote;
module_param(pinnacle_remote, int, 0644); /* Choose Pinnacle PCTV remote */
MODULE_PARM_DESC(pinnacle_remote, "Specify Pinnacle PCTV remote: 0=coloured, 1=grey (defaults to 0)");
static int ir_rc5_remote_gap = 885;
module_param(ir_rc5_remote_gap, int, 0644);
static int ir_rc5_key_timeout = 115;
module_param(ir_rc5_key_timeout, int, 0644);
static int repeat_delay = 500;
module_param(repeat_delay, int, 0644);
MODULE_PARM_DESC(repeat_delay, "delay before key repeat started");
static int repeat_period = 33;
module_param(repeat_period, int, 0644);
MODULE_PARM_DESC(repeat_period, "repeat period between "
"keypresses when key is down");
static unsigned int disable_other_ir;
module_param(disable_other_ir, int, 0644);
MODULE_PARM_DESC(disable_other_ir, "disable full codes of "
"alternative remotes from other manufacturers");
#define dprintk(fmt, arg...) if (ir_debug) \
printk(KERN_DEBUG "%s/ir: " fmt, dev->name , ## arg)
#define i2cdprintk(fmt, arg...) if (ir_debug) \
printk(KERN_DEBUG "%s/ir: " fmt, ir->name , ## arg)
/* Helper functions for RC5 and NEC decoding at GPIO16 or GPIO18 */
static int saa7134_rc5_irq(struct saa7134_dev *dev);
static int saa7134_nec_irq(struct saa7134_dev *dev);
static void nec_task(unsigned long data);
static void saa7134_nec_timer(unsigned long data);
/* -------------------- GPIO generic keycode builder -------------------- */
static int build_key(struct saa7134_dev *dev)
{
struct card_ir *ir = dev->remote;
u32 gpio, data;
/* here comes the additional handshake steps for some cards */
switch (dev->board) {
case SAA7134_BOARD_GOTVIEW_7135:
saa_setb(SAA7134_GPIO_GPSTATUS1, 0x80);
saa_clearb(SAA7134_GPIO_GPSTATUS1, 0x80);
break;
}
/* rising SAA7134_GPIO_GPRESCAN reads the status */
saa_clearb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
saa_setb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
if (ir->polling) {
if (ir->last_gpio == gpio)
return 0;
ir->last_gpio = gpio;
}
data = ir_extract_bits(gpio, ir->mask_keycode);
dprintk("build_key gpio=0x%x mask=0x%x data=%d\n",
gpio, ir->mask_keycode, data);
switch (dev->board) {
case SAA7134_BOARD_KWORLD_PLUS_TV_ANALOG:
if (data == ir->mask_keycode)
ir_input_nokey(ir->dev, &ir->ir);
else
ir_input_keydown(ir->dev, &ir->ir, data);
return 0;
}
if (ir->polling) {
if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) ||
(ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
ir_input_keydown(ir->dev, &ir->ir, data);
} else {
ir_input_nokey(ir->dev, &ir->ir);
}
}
else { /* IRQ driven mode - handle key press and release in one go */
if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) ||
(ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
ir_input_keydown(ir->dev, &ir->ir, data);
ir_input_nokey(ir->dev, &ir->ir);
}
}
return 0;
}
/* --------------------- Chip specific I2C key builders ----------------- */
static int get_key_flydvb_trio(struct IR_i2c *