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/*
 *
 * 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
 */

#ifndef _IR_COMMON
#define _IR_COMMON

#include <linux/input.h>
#include <linux/workqueue.h>

#define IR_TYPE_RC5     1
#define IR_TYPE_PD      2 /* Pulse distance encoded IR */
#define IR_TYPE_OTHER  99

#define IR_KEYTAB_TYPE	u32
#define IR_KEYTAB_SIZE	128  // enougth for rc5, probably need more some day ...

#define IR_KEYCODE(tab,code)	(((unsigned)code < IR_KEYTAB_SIZE) \
				 ? tab[code] : KEY_RESERVED)

#define RC5_START(x)	(((x)>>12)&3)
#define RC5_TOGGLE(x)	(((x)>>11)&1)
#define RC5_ADDR(x)	(((x)>>6)&31)
#define RC5_INSTR(x)	((x)&63)

struct ir_input_state {
	/* configuration */
	int                ir_type;
	IR_KEYTAB_TYPE     ir_codes[IR_KEYTAB_SIZE];

	/* key info */
	u32                ir_raw;      /* raw data */
	u32                ir_key;      /* ir key code */
	u32                keycode;     /* linux key code */
	int                keypressed;  /* current state */
};

/* this was saa7134_ir and bttv_ir, moved here for
 * rc5 decoding. */
struct card_ir {
	struct input_dev        *dev;
	struct ir_input_state   ir;
	char                    name[32];
	char                    phys[32];

	/* Usual gpio signalling */

	u32                     mask_keycode;
	u32                     mask_keydown;
	u32                     mask_keyup;
	u32                     polling;
	u32                     last_gpio;
	int			shift_by;
	int			start; // What should RC5_START() be
	int			addr; // What RC5_ADDR() should be.
	int			rc5_key_timeout;
	int			rc5_remote_gap;
	struct work_struct      work;
	struct timer_list       timer;

	/* RC5 gpio */
	u32 rc5_gpio;
	struct timer_list timer_end;	/* timer_end for code completion */
	struct timer_list timer_keyup;	/* timer_end for key release */
	u32 last_rc5;			/* last good rc5 code */
	u32 last_bit;			/* last raw bit seen */
	u32 code;			/* raw code under construction */
	struct timeval base_time;	/* time of last seen code */
	int active;			/* building raw code */
};

void ir_input_init(struct input_dev *dev, struct ir_input_state *ir,
		   int ir_type, IR_KEYTAB_TYPE *ir_codes);
void ir_input_nokey(struct input_dev *dev, struct ir_input_state *ir);
void ir_input_keydown(struct input_dev *dev, struct ir_input_state *ir,
		      u32 ir_key, u32 ir_raw);
u32  ir_extract_bits(u32 data, u32 mask);
int  ir_dump_samples(u32 *samples, int count);
int  ir_decode_biphase(u32 *samples, int count, int low, int high);
int  ir_decode_pulsedistance(u32 *samples, int count, int low, int high);

u32 ir_rc5_decode(unsigned int code);
void ir_rc5_timer_end(unsigned long data);
void ir_rc5_timer_keyup(unsigned long data);

/* Keymaps to be used by other modules */

extern IR_KEYTAB_TYPE ir_codes_empty[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_avermedia[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_avermedia_dvbt[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_apac_viewcomp[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_pixelview[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_nebula[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_dntv_live_dvb_t[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_iodata_bctv7e[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_adstech_dvb_t_pci[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_msi_tvanywhere[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_cinergy_1400[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_avertv_303[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_dntv_live_dvbt_pro[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_em_terratec[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_pinnacle_grey[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_flyvideo[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_flydvb[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_cinergy[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_eztv[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_avermedia[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_videomate_tv_pvr[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_manli[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_gotview7135[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_purpletv[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_pctv_sedna[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_pv951[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_rc5_tv[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_winfast[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_pinnacle_color[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_hauppauge_new[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_npgtech[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_norwood[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_proteus_2309[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_budget_ci_old[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_asus_pc39[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_encore_enltv[IR_KEYTAB_SIZE];
extern IR_KEYTAB_TYPE ir_codes_tt_1500[IR_KEYTAB_SIZE];

#endif

/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */