drivers/media/video/saa7134/saa7134-input.c - kernel/msm - Gitiles

 /*
  *
  * 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->c.name , ## arg)

 /** rc5 functions */
 static int saa7134_rc5_irq(struct saa7134_dev *dev);

 /* -------------------- 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);

 	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, 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, data);
 			ir_input_nokey(ir->dev, &ir->ir);
 		}
 	}

 	return 0;
 }

 /* --------------------- Chip specific I2C key builders ----------------- */

 static int get_key_purpletv(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 {
 	unsigned char b;

 	/* poll IR chip */
 	if (1 != i2c_master_recv(&ir->c,&b,1)) {
 		i2cdprintk("read error\n");
 		return -EIO;
 	}

 	/* no button press */
 	if (b==0)
 		return 0;

 	/* repeating */
 	if (b & 0x80)
 		return 1;

 	*ir_key = b;
 	*ir_raw = b;
 	return 1;
 }

 static int get_key_hvr1110(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 {
 	unsigned char buf[5], cod4, code3, code4;

 	/* poll IR chip */
 	if (5 != i2c_master_recv(&ir->c,buf,5))
 		return -EIO;

 	cod4	= buf[4];
 	code4	= (cod4 >> 2);
 	code3	= buf[3];
 	if (code3 == 0)
 		/* no key pressed */
 		return 0;

 	/* return key */
 	*ir_key = code4;
 	*ir_raw = code4;
 	return 1;
 }


 static int get_key_beholdm6xx(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
 {
 	unsigned char data[12];
 	u32 gpio;

 	struct saa7134_dev *dev = ir->c.adapter->algo_data;

 	/* 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 (0x400000 & ~gpio)
 		return 0; /* No button press */

 	ir->c.addr = 0x5a >> 1;

 	if (12 != i2c_master_recv(&ir->c, data, 12)) {
 		i2cdprintk("read error\n");
 		return -EIO;
 	}
 	/* IR of this card normally decode signals NEC-standard from
 	 * - Sven IHOO MT 5.1R remote. xxyye718
 	 * - Sven DVD HD-10xx remote. xxyyf708
 	 * - BBK ...
 	 * - mayby others
 	 * So, skip not our, if disable full codes mode.
 	 */
 	if (data[10] != 0x6b && data[11] != 0x86 && disable_other_ir)
 		return 0;

 	*ir_key = data[9];
 	*ir_raw = data[9];

 	return 1;
 }

 void saa7134_input_irq(struct saa7134_dev *dev)
 {
 	struct card_ir *ir = dev->remote;

 	if (!ir->polling && !ir->rc5_gpio) {
 		build_key(dev);
 	} else if (ir->rc5_gpio) {
 		saa7134_rc5_irq(dev);
 	}
 }

 static void saa7134_input_timer(unsigned long data)
 {
 	struct saa7134_dev *dev = (struct saa7134_dev *)data;
 	struct card_ir *ir = dev->remote;

 	build_key(dev);
 	mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
 }

 void saa7134_ir_start(struct saa7134_dev *dev, struct card_ir *ir)
 {
 	if (ir->polling) {
 		setup_timer(&ir->timer, saa7134_input_timer,
 			    (unsigned long)dev);
 		ir->timer.expires  = jiffies + HZ;
 		add_timer(&ir->timer);
 	} else if (ir->rc5_gpio) {
 		/* set timer_end for code completion */
 		init_timer(&ir->timer_end);
 		ir->timer_end.function = ir_rc5_timer_end;
 		ir->timer_end.data = (unsigned long)ir;
 		init_timer(&ir->timer_keyup);
 		ir->timer_keyup.function = ir_rc5_timer_keyup;
 		ir->timer_keyup.data = (unsigned long)ir;
 		ir->shift_by = 2;
 		ir->start = 0x2;
 		ir->addr = 0x17;
 		ir->rc5_key_timeout = ir_rc5_key_timeout;
 		ir->rc5_remote_gap = ir_rc5_remote_gap;
 	}
 }

 void saa7134_ir_stop(struct saa7134_dev *dev)
 {
 	if (dev->remote->polling)
 		del_timer_sync(&dev->remote->timer);
 }

 int saa7134_input_init1(struct saa7134_dev *dev)
 {
 	struct card_ir *ir;
 	struct input_dev *input_dev;
 	IR_KEYTAB_TYPE *ir_codes = NULL;
 	u32 mask_keycode = 0;
 	u32 mask_keydown = 0;
 	u32 mask_keyup   = 0;
 	int polling      = 0;
 	int rc5_gpio	 = 0;
 	int ir_type      = IR_TYPE_OTHER;
 	int err;

 	if (dev->has_remote != SAA7134_REMOTE_GPIO)
 		return -ENODEV;
 	if (disable_ir)
 		return -ENODEV;

 	/* detect & configure */
 	switch (dev->board) {
 	case SAA7134_BOARD_FLYVIDEO2000:
 	case SAA7134_BOARD_FLYVIDEO3000:
 	case SAA7134_BOARD_FLYTVPLATINUM_FM:
 	case SAA7134_BOARD_FLYTVPLATINUM_MINI2:
 		ir_codes     = ir_codes_flyvideo;
 		mask_keycode = 0xEC00000;
 		mask_keydown = 0x0040000;
 		break;
 	case SAA7134_BOARD_CINERGY400:
 	case SAA7134_BOARD_CINERGY600:
 	case SAA7134_BOARD_CINERGY600_MK3:
 		ir_codes     = ir_codes_cinergy;
 		mask_keycode = 0x00003f;
 		mask_keyup   = 0x040000;
 		break;
 	case SAA7134_BOARD_ECS_TVP3XP:
 	case SAA7134_BOARD_ECS_TVP3XP_4CB5:
 		ir_codes     = ir_codes_eztv;
 		mask_keycode = 0x00017c;
 		mask_keyup   = 0x000002;
 		polling      = 50; // ms
 		break;
 	case SAA7134_BOARD_KWORLD_XPERT:
 	case SAA7134_BOARD_AVACSSMARTTV:
 		ir_codes     = ir_codes_pixelview;
 		mask_keycode = 0x00001F;
 		mask_keyup   = 0x000020;
 		polling      = 50; // ms
 		break;
 	case SAA7134_BOARD_MD2819:
 	case SAA7134_BOARD_KWORLD_VSTREAM_XPERT:
 	case SAA7134_BOARD_AVERMEDIA_305:
 	case SAA7134_BOARD_AVERMEDIA_307:
 	case SAA7134_BOARD_AVERMEDIA_STUDIO_305:
 	case SAA7134_BOARD_AVERMEDIA_STUDIO_307:
 	case SAA7134_BOARD_AVERMEDIA_STUDIO_507:
 	case SAA7134_BOARD_AVERMEDIA_GO_007_FM:
 	case SAA7134_BOARD_AVERMEDIA_M102:
 		ir_codes     = ir_codes_avermedia;
 		mask_keycode = 0x0007C8;
 		mask_keydown = 0x000010;
 		polling      = 50; // ms
 		/* Set GPIO pin2 to high to enable the IR controller */
 		saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
 		saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
 		break;
 	case SAA7134_BOARD_AVERMEDIA_777:
 	case SAA7134_BOARD_AVERMEDIA_A16AR:
 		ir_codes     = ir_codes_avermedia;
 		mask_keycode = 0x02F200;
 		mask_keydown = 0x000400;
 		polling      = 50; // ms
 		/* Without this we won't receive key up events */
 		saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
 		saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
 		break;
 	case SAA7134_BOARD_AVERMEDIA_A16D:
 		ir_codes     = ir_codes_avermedia_a16d;
 		mask_keycode = 0x02F200;
 		mask_keydown = 0x000400;
 		polling      = 50; /* ms */
 		/* Without this we won't receive key up events */
 		saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
 		saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
 		break;
 	case SAA7134_BOARD_KWORLD_TERMINATOR:
 		ir_codes     = ir_codes_pixelview;
 		mask_keycode = 0x00001f;
 		mask_keyup   = 0x000060;
 		polling      = 50; // ms
 		break;
 	case SAA7134_BOARD_MANLI_MTV001:
 	case SAA7134_BOARD_MANLI_MTV002:
 		ir_codes     = ir_codes_manli;
 		mask_keycode = 0x001f00;
 		mask_keyup   = 0x004000;
 		polling      = 50; /* ms */
 		break;
 	case SAA7134_BOARD_BEHOLD_409FM:
 	case SAA7134_BOARD_BEHOLD_401:
 	case SAA7134_BOARD_BEHOLD_403:
 	case SAA7134_BOARD_BEHOLD_403FM:
 	case SAA7134_BOARD_BEHOLD_405:
 	case SAA7134_BOARD_BEHOLD_405FM:
 	case SAA7134_BOARD_BEHOLD_407:
 	case SAA7134_BOARD_BEHOLD_407FM:
 	case SAA7134_BOARD_BEHOLD_409:
 	case SAA7134_BOARD_BEHOLD_505FM:
 	case SAA7134_BOARD_BEHOLD_507_9FM:
 		ir_codes     = ir_codes_manli;
 		mask_keycode = 0x003f00;
 		mask_keyup   = 0x004000;
 		polling      = 50; /* ms */
 		break;
 	case SAA7134_BOARD_BEHOLD_COLUMBUS_TVFM:
 		ir_codes     = ir_codes_behold_columbus;
 		mask_keycode = 0x003f00;
 		mask_keyup   = 0x004000;
 		polling      = 50; // ms
 		break;
 	case SAA7134_BOARD_SEDNA_PC_TV_CARDBUS:
 		ir_codes     = ir_codes_pctv_sedna;
 		mask_keycode = 0x001f00;
 		mask_keyup   = 0x004000;
 		polling      = 50; // ms
 		break;
 	case SAA7134_BOARD_GOTVIEW_7135:
 		ir_codes     = ir_codes_gotview7135;
 		mask_keycode = 0x0003CC;
 		mask_keydown = 0x000010;
 		polling	     = 5; /* ms */
 		saa_setb(SAA7134_GPIO_GPMODE1, 0x80);
 		break;
 	case SAA7134_BOARD_VIDEOMATE_TV_PVR:
 	case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS:
 	case SAA7134_BOARD_VIDEOMATE_TV_GOLD_PLUSII:
 		ir_codes     = ir_codes_videomate_tv_pvr;
 		mask_keycode = 0x00003F;
 		mask_keyup   = 0x400000;
 		polling      = 50; // ms
 		break;
 	case SAA7134_BOARD_PROTEUS_2309:
 		ir_codes     = ir_codes_proteus_2309;
 		mask_keycode = 0x00007F;
 		mask_keyup   = 0x000080;
 		polling      = 50; // ms
 		break;
 	case SAA7134_BOARD_VIDEOMATE_DVBT_300:
 	case SAA7134_BOARD_VIDEOMATE_DVBT_200:
 		ir_codes     = ir_codes_videomate_tv_pvr;
 		mask_keycode = 0x003F00;
 		mask_keyup   = 0x040000;
 		break;
 	case SAA7134_BOARD_FLYDVBS_LR300:
 	case SAA7134_BOARD_FLYDVBT_LR301:
 	case SAA7134_BOARD_FLYDVBTDUO:
 		ir_codes     = ir_codes_flydvb;
 		mask_keycode = 0x0001F00;
 		mask_keydown = 0x0040000;
 		break;
 	case SAA7134_BOARD_ASUSTeK_P7131_DUAL:
 	case SAA7134_BOARD_ASUSTeK_P7131_HYBRID_LNA:
 		ir_codes     = ir_codes_asus_pc39;
 		mask_keydown = 0x0040000;
 		rc5_gpio = 1;
 		break;
 	case SAA7134_BOARD_ENCORE_ENLTV:
 	case SAA7134_BOARD_ENCORE_ENLTV_FM:
 		ir_codes     = ir_codes_encore_enltv;
 		mask_keycode = 0x00007f;
 		mask_keyup   = 0x040000;
 		polling      = 50; // ms
 		break;
 	case SAA7134_BOARD_10MOONSTVMASTER3:
 		ir_codes     = ir_codes_encore_enltv;
 		mask_keycode = 0x5f80000;
 		mask_keyup   = 0x8000000;
 		polling      = 50; //ms
 		break;
 	case SAA7134_BOARD_GENIUS_TVGO_A11MCE:
 		ir_codes     = ir_codes_genius_tvgo_a11mce;
 		mask_keycode = 0xff;
 		mask_keydown = 0xf00000;
 		polling = 50; /* ms */
 		break;
 	}
 	if (NULL == ir_codes) {
 		printk("%s: Oops: IR config error [card=%d]\n",
 		       dev->name, dev->board);
 		return -ENODEV;
 	}

 	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
 	input_dev = input_allocate_device();
 	if (!ir || !input_dev) {
 		err = -ENOMEM;
 		goto err_out_free;
 	}

 	ir->dev = input_dev;

 	/* init hardware-specific stuff */
 	ir->mask_keycode = mask_keycode;
 	ir->mask_keydown = mask_keydown;
 	ir->mask_keyup   = mask_keyup;
 	ir->polling      = polling;
 	ir->rc5_gpio	 = rc5_gpio;

 	/* init input device */
 	snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
 		 saa7134_boards[dev->board].name);
 	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 		 pci_name(dev->pci));

 	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
 	input_dev->name = ir->name;
 	input_dev->phys = ir->phys;
 	input_dev->id.bustype = BUS_PCI;
 	input_dev->id.version = 1;
 	if (dev->pci->subsystem_vendor) {
 		input_dev->id.vendor  = dev->pci->subsystem_vendor;
 		input_dev->id.product = dev->pci->subsystem_device;
 	} else {
 		input_dev->id.vendor  = dev->pci->vendor;
 		input_dev->id.product = dev->pci->device;
 	}
 	input_dev->dev.parent = &dev->pci->dev;

 	dev->remote = ir;
 	saa7134_ir_start(dev, ir);

 	err = input_register_device(ir->dev);
 	if (err)
 		goto err_out_stop;

 	/* the remote isn't as bouncy as a keyboard */
 	ir->dev->rep[REP_DELAY] = repeat_delay;
 	ir->dev->rep[REP_PERIOD] = repeat_period;

 	return 0;

  err_out_stop:
 	saa7134_ir_stop(dev);
 	dev->remote = NULL;
  err_out_free:
 	input_free_device(input_dev);
 	kfree(ir);
 	return err;
 }

 void saa7134_input_fini(struct saa7134_dev *dev)
 {
 	if (NULL == dev->remote)
 		return;

 	saa7134_ir_stop(dev);
 	input_unregister_device(dev->remote->dev);
 	kfree(dev->remote);
 	dev->remote = NULL;
 }

 void saa7134_set_i2c_ir(struct saa7134_dev *dev, struct IR_i2c *ir)
 {
 	if (disable_ir) {
 		dprintk("Found supported i2c remote, but IR has been disabled\n");
 		ir->get_key=NULL;
 		return;
 	}

 	switch (dev->board) {
 	case SAA7134_BOARD_PINNACLE_PCTV_110i:
 	case SAA7134_BOARD_PINNACLE_PCTV_310i:
 		snprintf(ir->c.name, sizeof(ir->c.name), "Pinnacle PCTV");
 		if (pinnacle_remote == 0) {
 			ir->get_key   = get_key_pinnacle_color;
 			ir->ir_codes = ir_codes_pinnacle_color;
 		} else {
 			ir->get_key   = get_key_pinnacle_grey;
 			ir->ir_codes = ir_codes_pinnacle_grey;
 		}
 		break;
 	case SAA7134_BOARD_UPMOST_PURPLE_TV:
 		snprintf(ir->c.name, sizeof(ir->c.name), "Purple TV");
 		ir->get_key   = get_key_purpletv;
 		ir->ir_codes  = ir_codes_purpletv;
 		break;
 	case SAA7134_BOARD_HAUPPAUGE_HVR1110:
 		snprintf(ir->c.name, sizeof(ir->c.name), "HVR 1110");
 		ir->get_key   = get_key_hvr1110;
 		ir->ir_codes  = ir_codes_hauppauge_new;
 		break;
 	case SAA7134_BOARD_BEHOLD_607_9FM:
 	case SAA7134_BOARD_BEHOLD_M6:
 	case SAA7134_BOARD_BEHOLD_M63:
 	case SAA7134_BOARD_BEHOLD_M6_EXTRA:
 	case SAA7134_BOARD_BEHOLD_H6:
 		snprintf(ir->c.name, sizeof(ir->c.name), "BeholdTV");
 		ir->get_key   = get_key_beholdm6xx;
 		ir->ir_codes  = ir_codes_behold;
 		break;
 	default:
 		dprintk("Shouldn't get here: Unknown board %x for I2C IR?\n",dev->board);
 		break;
 	}

 }

 static int saa7134_rc5_irq(struct saa7134_dev *dev)
 {
 	struct card_ir *ir = dev->remote;
 	struct timeval tv;
 	u32 gap;
 	unsigned long current_jiffies, timeout;

 	/* get time of bit */
 	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;
 	}

 	/* active code => add bit */
 	if (ir->active) {
 		/* only if in the code (otherwise spurious IRQ or timer
 		   late) */
 		if (ir->last_bit < 28) {
 			ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
 			    ir_rc5_remote_gap;
 			ir->code |= 1 << ir->last_bit;
 		}
 		/* starting new code */
 	} else {
 		ir->active = 1;
 		ir->code = 0;
 		ir->base_time = tv;
 		ir->last_bit = 0;

 		timeout = current_jiffies + (500 + 30 * HZ) / 1000;
 		mod_timer(&ir->timer_end, timeout);
 	}

 	return 1;
 }

 /* ----------------------------------------------------------------------
  * Local variables:
  * c-basic-offset: 8
  * End:
  */
	/*
	*
	* 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->c.name , ## arg)

	/** rc5 functions */
	static int saa7134_rc5_irq(struct saa7134_dev *dev);

	/* -------------------- 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);

	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, 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, data);
	ir_input_nokey(ir->dev, &ir->ir);
	}
	}

	return 0;
	}

	/* --------------------- Chip specific I2C key builders ----------------- */

	static int get_key_purpletv(struct IR_i2c ir, u32 ir_key, u32 *ir_raw)
	{
	unsigned char b;

	/* poll IR chip */
	if (1 != i2c_master_recv(&ir->c,&b,1)) {
	i2cdprintk("read error\n");
	return -EIO;
	}

	/* no button press */
	if (b==0)
	return 0;

	/* repeating */
	if (b & 0x80)
	return 1;

	*ir_key = b;
	*ir_raw = b;
	return 1;
	}

	static int get_key_hvr1110(struct IR_i2c ir, u32 ir_key, u32 *ir_raw)
	{
	unsigned char buf[5], cod4, code3, code4;

	/* poll IR chip */
	if (5 != i2c_master_recv(&ir->c,buf,5))
	return -EIO;

	cod4 = buf[4];
	code4 = (cod4 >> 2);
	code3 = buf[3];
	if (code3 == 0)
	/* no key pressed */
	return 0;

	/* return key */
	*ir_key = code4;
	*ir_raw = code4;
	return 1;
	}


	static int get_key_beholdm6xx(struct IR_i2c ir, u32 ir_key, u32 *ir_raw)
	{
	unsigned char data[12];
	u32 gpio;

	struct saa7134_dev *dev = ir->c.adapter->algo_data;

	/* 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 (0x400000 & ~gpio)
	return 0; /* No button press */

	ir->c.addr = 0x5a >> 1;

	if (12 != i2c_master_recv(&ir->c, data, 12)) {
	i2cdprintk("read error\n");
	return -EIO;
	}
	/* IR of this card normally decode signals NEC-standard from
	* - Sven IHOO MT 5.1R remote. xxyye718
	* - Sven DVD HD-10xx remote. xxyyf708
	* - BBK ...
	* - mayby others
	* So, skip not our, if disable full codes mode.
	*/
	if (data[10] != 0x6b && data[11] != 0x86 && disable_other_ir)
	return 0;

	*ir_key = data[9];
	*ir_raw = data[9];

	return 1;
	}

	void saa7134_input_irq(struct saa7134_dev *dev)
	{
	struct card_ir *ir = dev->remote;

	if (!ir->polling && !ir->rc5_gpio) {
	build_key(dev);
	} else if (ir->rc5_gpio) {
	saa7134_rc5_irq(dev);
	}
	}

	static void saa7134_input_timer(unsigned long data)
	{
	struct saa7134_dev dev = (struct saa7134_dev )data;
	struct card_ir *ir = dev->remote;

	build_key(dev);
	mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
	}

	void saa7134_ir_start(struct saa7134_dev dev, struct card_ir ir)
	{
	if (ir->polling) {
	setup_timer(&ir->timer, saa7134_input_timer,
	(unsigned long)dev);
	ir->timer.expires = jiffies + HZ;
	add_timer(&ir->timer);
	} else if (ir->rc5_gpio) {
	/* set timer_end for code completion */
	init_timer(&ir->timer_end);
	ir->timer_end.function = ir_rc5_timer_end;
	ir->timer_end.data = (unsigned long)ir;
	init_timer(&ir->timer_keyup);
	ir->timer_keyup.function = ir_rc5_timer_keyup;
	ir->timer_keyup.data = (unsigned long)ir;
	ir->shift_by = 2;
	ir->start = 0x2;
	ir->addr = 0x17;
	ir->rc5_key_timeout = ir_rc5_key_timeout;
	ir->rc5_remote_gap = ir_rc5_remote_gap;
	}
	}

	void saa7134_ir_stop(struct saa7134_dev *dev)
	{
	if (dev->remote->polling)
	del_timer_sync(&dev->remote->timer);
	}

	int saa7134_input_init1(struct saa7134_dev *dev)
	{
	struct card_ir *ir;
	struct input_dev *input_dev;
	IR_KEYTAB_TYPE *ir_codes = NULL;
	u32 mask_keycode = 0;
	u32 mask_keydown = 0;
	u32 mask_keyup = 0;
	int polling = 0;
	int rc5_gpio = 0;
	int ir_type = IR_TYPE_OTHER;
	int err;

	if (dev->has_remote != SAA7134_REMOTE_GPIO)
	return -ENODEV;
	if (disable_ir)
	return -ENODEV;

	/* detect & configure */
	switch (dev->board) {
	case SAA7134_BOARD_FLYVIDEO2000:
	case SAA7134_BOARD_FLYVIDEO3000:
	case SAA7134_BOARD_FLYTVPLATINUM_FM:
	case SAA7134_BOARD_FLYTVPLATINUM_MINI2:
	ir_codes = ir_codes_flyvideo;
	mask_keycode = 0xEC00000;
	mask_keydown = 0x0040000;
	break;
	case SAA7134_BOARD_CINERGY400:
	case SAA7134_BOARD_CINERGY600:
	case SAA7134_BOARD_CINERGY600_MK3:
	ir_codes = ir_codes_cinergy;
	mask_keycode = 0x00003f;
	mask_keyup = 0x040000;
	break;
	case SAA7134_BOARD_ECS_TVP3XP:
	case SAA7134_BOARD_ECS_TVP3XP_4CB5:
	ir_codes = ir_codes_eztv;
	mask_keycode = 0x00017c;
	mask_keyup = 0x000002;
	polling = 50; // ms
	break;
	case SAA7134_BOARD_KWORLD_XPERT:
	case SAA7134_BOARD_AVACSSMARTTV:
	ir_codes = ir_codes_pixelview;
	mask_keycode = 0x00001F;
	mask_keyup = 0x000020;
	polling = 50; // ms
	break;
	case SAA7134_BOARD_MD2819:
	case SAA7134_BOARD_KWORLD_VSTREAM_XPERT:
	case SAA7134_BOARD_AVERMEDIA_305:
	case SAA7134_BOARD_AVERMEDIA_307:
	case SAA7134_BOARD_AVERMEDIA_STUDIO_305:
	case SAA7134_BOARD_AVERMEDIA_STUDIO_307:
	case SAA7134_BOARD_AVERMEDIA_STUDIO_507:
	case SAA7134_BOARD_AVERMEDIA_GO_007_FM:
	case SAA7134_BOARD_AVERMEDIA_M102:
	ir_codes = ir_codes_avermedia;
	mask_keycode = 0x0007C8;
	mask_keydown = 0x000010;
	polling = 50; // ms
	/* Set GPIO pin2 to high to enable the IR controller */
	saa_setb(SAA7134_GPIO_GPMODE0, 0x4);
	saa_setb(SAA7134_GPIO_GPSTATUS0, 0x4);
	break;
	case SAA7134_BOARD_AVERMEDIA_777:
	case SAA7134_BOARD_AVERMEDIA_A16AR:
	ir_codes = ir_codes_avermedia;
	mask_keycode = 0x02F200;
	mask_keydown = 0x000400;
	polling = 50; // ms
	/* Without this we won't receive key up events */
	saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
	saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
	break;
	case SAA7134_BOARD_AVERMEDIA_A16D:
	ir_codes = ir_codes_avermedia_a16d;
	mask_keycode = 0x02F200;
	mask_keydown = 0x000400;
	polling = 50; /* ms */
	/* Without this we won't receive key up events */
	saa_setb(SAA7134_GPIO_GPMODE1, 0x1);
	saa_setb(SAA7134_GPIO_GPSTATUS1, 0x1);
	break;
	case SAA7134_BOARD_KWORLD_TERMINATOR:
	ir_codes = ir_codes_pixelview;
	mask_keycode = 0x00001f;
	mask_keyup = 0x000060;
	polling = 50; // ms
	break;
	case SAA7134_BOARD_MANLI_MTV001:
	case SAA7134_BOARD_MANLI_MTV002:
	ir_codes = ir_codes_manli;
	mask_keycode = 0x001f00;
	mask_keyup = 0x004000;
	polling = 50; /* ms */
	break;
	case SAA7134_BOARD_BEHOLD_409FM:
	case SAA7134_BOARD_BEHOLD_401:
	case SAA7134_BOARD_BEHOLD_403:
	case SAA7134_BOARD_BEHOLD_403FM:
	case SAA7134_BOARD_BEHOLD_405:
	case SAA7134_BOARD_BEHOLD_405FM:
	case SAA7134_BOARD_BEHOLD_407:
	case SAA7134_BOARD_BEHOLD_407FM:
	case SAA7134_BOARD_BEHOLD_409:
	case SAA7134_BOARD_BEHOLD_505FM:
	case SAA7134_BOARD_BEHOLD_507_9FM:
	ir_codes = ir_codes_manli;
	mask_keycode = 0x003f00;
	mask_keyup = 0x004000;
	polling = 50; /* ms */
	break;
	case SAA7134_BOARD_BEHOLD_COLUMBUS_TVFM:
	ir_codes = ir_codes_behold_columbus;
	mask_keycode = 0x003f00;
	mask_keyup = 0x004000;
	polling = 50; // ms
	break;
	case SAA7134_BOARD_SEDNA_PC_TV_CARDBUS:
	ir_codes = ir_codes_pctv_sedna;
	mask_keycode = 0x001f00;
	mask_keyup = 0x004000;
	polling = 50; // ms
	break;
	case SAA7134_BOARD_GOTVIEW_7135:
	ir_codes = ir_codes_gotview7135;
	mask_keycode = 0x0003CC;
	mask_keydown = 0x000010;
	polling = 5; /* ms */
	saa_setb(SAA7134_GPIO_GPMODE1, 0x80);
	break;
	case SAA7134_BOARD_VIDEOMATE_TV_PVR:
	case SAA7134_BOARD_VIDEOMATE_GOLD_PLUS:
	case SAA7134_BOARD_VIDEOMATE_TV_GOLD_PLUSII:
	ir_codes = ir_codes_videomate_tv_pvr;
	mask_keycode = 0x00003F;
	mask_keyup = 0x400000;
	polling = 50; // ms
	break;
	case SAA7134_BOARD_PROTEUS_2309:
	ir_codes = ir_codes_proteus_2309;
	mask_keycode = 0x00007F;
	mask_keyup = 0x000080;
	polling = 50; // ms
	break;
	case SAA7134_BOARD_VIDEOMATE_DVBT_300:
	case SAA7134_BOARD_VIDEOMATE_DVBT_200:
	ir_codes = ir_codes_videomate_tv_pvr;
	mask_keycode = 0x003F00;
	mask_keyup = 0x040000;
	break;
	case SAA7134_BOARD_FLYDVBS_LR300:
	case SAA7134_BOARD_FLYDVBT_LR301:
	case SAA7134_BOARD_FLYDVBTDUO:
	ir_codes = ir_codes_flydvb;
	mask_keycode = 0x0001F00;
	mask_keydown = 0x0040000;
	break;
	case SAA7134_BOARD_ASUSTeK_P7131_DUAL:
	case SAA7134_BOARD_ASUSTeK_P7131_HYBRID_LNA:
	ir_codes = ir_codes_asus_pc39;
	mask_keydown = 0x0040000;
	rc5_gpio = 1;
	break;
	case SAA7134_BOARD_ENCORE_ENLTV:
	case SAA7134_BOARD_ENCORE_ENLTV_FM:
	ir_codes = ir_codes_encore_enltv;
	mask_keycode = 0x00007f;
	mask_keyup = 0x040000;
	polling = 50; // ms
	break;
	case SAA7134_BOARD_10MOONSTVMASTER3:
	ir_codes = ir_codes_encore_enltv;
	mask_keycode = 0x5f80000;
	mask_keyup = 0x8000000;
	polling = 50; //ms
	break;
	case SAA7134_BOARD_GENIUS_TVGO_A11MCE:
	ir_codes = ir_codes_genius_tvgo_a11mce;
	mask_keycode = 0xff;
	mask_keydown = 0xf00000;
	polling = 50; /* ms */
	break;
	}
	if (NULL == ir_codes) {
	printk("%s: Oops: IR config error [card=%d]\n",
	dev->name, dev->board);
	return -ENODEV;
	}

	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!ir \|\| !input_dev) {
	err = -ENOMEM;
	goto err_out_free;
	}

	ir->dev = input_dev;

	/* init hardware-specific stuff */
	ir->mask_keycode = mask_keycode;
	ir->mask_keydown = mask_keydown;
	ir->mask_keyup = mask_keyup;
	ir->polling = polling;
	ir->rc5_gpio = rc5_gpio;

	/* init input device */
	snprintf(ir->name, sizeof(ir->name), "saa7134 IR (%s)",
	saa7134_boards[dev->board].name);
	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
	pci_name(dev->pci));

	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
	input_dev->name = ir->name;
	input_dev->phys = ir->phys;
	input_dev->id.bustype = BUS_PCI;
	input_dev->id.version = 1;
	if (dev->pci->subsystem_vendor) {
	input_dev->id.vendor = dev->pci->subsystem_vendor;
	input_dev->id.product = dev->pci->subsystem_device;
	} else {
	input_dev->id.vendor = dev->pci->vendor;
	input_dev->id.product = dev->pci->device;
	}
	input_dev->dev.parent = &dev->pci->dev;

	dev->remote = ir;
	saa7134_ir_start(dev, ir);

	err = input_register_device(ir->dev);
	if (err)
	goto err_out_stop;

	/* the remote isn't as bouncy as a keyboard */
	ir->dev->rep[REP_DELAY] = repeat_delay;
	ir->dev->rep[REP_PERIOD] = repeat_period;

	return 0;

	err_out_stop:
	saa7134_ir_stop(dev);
	dev->remote = NULL;
	err_out_free:
	input_free_device(input_dev);
	kfree(ir);
	return err;
	}

	void saa7134_input_fini(struct saa7134_dev *dev)
	{
	if (NULL == dev->remote)
	return;

	saa7134_ir_stop(dev);
	input_unregister_device(dev->remote->dev);
	kfree(dev->remote);
	dev->remote = NULL;
	}

	void saa7134_set_i2c_ir(struct saa7134_dev dev, struct IR_i2c ir)
	{
	if (disable_ir) {
	dprintk("Found supported i2c remote, but IR has been disabled\n");
	ir->get_key=NULL;
	return;
	}

	switch (dev->board) {
	case SAA7134_BOARD_PINNACLE_PCTV_110i:
	case SAA7134_BOARD_PINNACLE_PCTV_310i:
	snprintf(ir->c.name, sizeof(ir->c.name), "Pinnacle PCTV");
	if (pinnacle_remote == 0) {
	ir->get_key = get_key_pinnacle_color;
	ir->ir_codes = ir_codes_pinnacle_color;
	} else {
	ir->get_key = get_key_pinnacle_grey;
	ir->ir_codes = ir_codes_pinnacle_grey;
	}
	break;
	case SAA7134_BOARD_UPMOST_PURPLE_TV:
	snprintf(ir->c.name, sizeof(ir->c.name), "Purple TV");
	ir->get_key = get_key_purpletv;
	ir->ir_codes = ir_codes_purpletv;
	break;
	case SAA7134_BOARD_HAUPPAUGE_HVR1110:
	snprintf(ir->c.name, sizeof(ir->c.name), "HVR 1110");
	ir->get_key = get_key_hvr1110;
	ir->ir_codes = ir_codes_hauppauge_new;
	break;
	case SAA7134_BOARD_BEHOLD_607_9FM:
	case SAA7134_BOARD_BEHOLD_M6:
	case SAA7134_BOARD_BEHOLD_M63:
	case SAA7134_BOARD_BEHOLD_M6_EXTRA:
	case SAA7134_BOARD_BEHOLD_H6:
	snprintf(ir->c.name, sizeof(ir->c.name), "BeholdTV");
	ir->get_key = get_key_beholdm6xx;
	ir->ir_codes = ir_codes_behold;
	break;
	default:
	dprintk("Shouldn't get here: Unknown board %x for I2C IR?\n",dev->board);
	break;
	}

	}

	static int saa7134_rc5_irq(struct saa7134_dev *dev)
	{
	struct card_ir *ir = dev->remote;
	struct timeval tv;
	u32 gap;
	unsigned long current_jiffies, timeout;

	/* get time of bit */
	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;
	}

	/* active code => add bit */
	if (ir->active) {
	/* only if in the code (otherwise spurious IRQ or timer
	late) */
	if (ir->last_bit < 28) {
	ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
	ir_rc5_remote_gap;
	ir->code \|= 1 << ir->last_bit;
	}
	/* starting new code */
	} else {
	ir->active = 1;
	ir->code = 0;
	ir->base_time = tv;
	ir->last_bit = 0;

	timeout = current_jiffies + (500 + 30 * HZ) / 1000;
	mod_timer(&ir->timer_end, timeout);
	}

	return 1;
	}

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