drivers/media/video/bt8xx/bttv-input.c - kernel/msm-4.19 - Gitiles

 /*
  *
  * Copyright (c) 2003 Gerd Knorr
  * Copyright (c) 2003 Pavel Machek
  *
  * 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 "bttv.h"
 #include "bttvp.h"


 static int debug;
 module_param(debug, int, 0644);    /* debug level (0,1,2) */
 static int repeat_delay = 500;
 module_param(repeat_delay, int, 0644);
 static int repeat_period = 33;
 module_param(repeat_period, int, 0644);

 static int ir_rc5_remote_gap = 885;
 module_param(ir_rc5_remote_gap, int, 0644);
 static int ir_rc5_key_timeout = 200;
 module_param(ir_rc5_key_timeout, int, 0644);

 #define DEVNAME "bttv-input"

 /* ---------------------------------------------------------------------- */

 static void ir_handle_key(struct bttv *btv)
 {
 	struct card_ir *ir = btv->remote;
 	u32 gpio,data;

 	/* read gpio value */
 	gpio = bttv_gpio_read(&btv->c);
 	if (ir->polling) {
 		if (ir->last_gpio == gpio)
 			return;
 		ir->last_gpio = gpio;
 	}

 	/* extract data */
 	data = ir_extract_bits(gpio, ir->mask_keycode);
 	dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
 		gpio, data,
 		ir->polling               ? "poll"  : "irq",
 		(gpio & ir->mask_keydown) ? " down" : "",
 		(gpio & ir->mask_keyup)   ? " up"   : "");

 	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);
 	}

 }

 void bttv_input_irq(struct bttv *btv)
 {
 	struct card_ir *ir = btv->remote;

 	if (!ir->polling)
 		ir_handle_key(btv);
 }

 static void bttv_input_timer(unsigned long data)
 {
 	struct bttv *btv = (struct bttv*)data;
 	struct card_ir *ir = btv->remote;

 	ir_handle_key(btv);
 	mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
 }

 /* ---------------------------------------------------------------*/

 static int bttv_rc5_irq(struct bttv *btv)
 {
 	struct card_ir *ir = btv->remote;
 	struct timeval tv;
 	u32 gpio;
 	u32 gap;
 	unsigned long current_jiffies;

 	/* read gpio port */
 	gpio = bttv_gpio_read(&btv->c);

 	/* remote IRQ? */
 	if (!(gpio & 0x20))
 		return 0;

 	/* 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;

 		mod_timer(&ir->timer_end,
 			  current_jiffies + msecs_to_jiffies(30));
 	}

 	/* toggle GPIO pin 4 to reset the irq */
 	bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
 	bttv_gpio_write(&btv->c, gpio | (1 << 4));
 	return 1;
 }

 /* ---------------------------------------------------------------------- */

 static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
 {
 	if (ir->polling) {
 		setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
 		ir->timer.expires  = jiffies + msecs_to_jiffies(1000);
 		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 = 1;
 		ir->start = 3;
 		ir->addr = 0x0;
 		ir->rc5_key_timeout = ir_rc5_key_timeout;
 		ir->rc5_remote_gap = ir_rc5_remote_gap;
 	}
 }

 static void bttv_ir_stop(struct bttv *btv)
 {
 	if (btv->remote->polling) {
 		del_timer_sync(&btv->remote->timer);
 		flush_scheduled_work();
 	}

 	if (btv->remote->rc5_gpio) {
 		u32 gpio;

 		del_timer_sync(&btv->remote->timer_end);
 		flush_scheduled_work();

 		gpio = bttv_gpio_read(&btv->c);
 		bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
 	}
 }

 int bttv_input_init(struct bttv *btv)
 {
 	struct card_ir *ir;
 	IR_KEYTAB_TYPE *ir_codes = NULL;
 	struct input_dev *input_dev;
 	int ir_type = IR_TYPE_OTHER;
 	int err = -ENOMEM;

 	if (!btv->has_remote)
 		return -ENODEV;

 	ir = kzalloc(sizeof(*ir),GFP_KERNEL);
 	input_dev = input_allocate_device();
 	if (!ir || !input_dev)
 		goto err_out_free;

 	/* detect & configure */
 	switch (btv->c.type) {
 	case BTTV_BOARD_AVERMEDIA:
 	case BTTV_BOARD_AVPHONE98:
 	case BTTV_BOARD_AVERMEDIA98:
 		ir_codes         = ir_codes_avermedia;
 		ir->mask_keycode = 0xf88000;
 		ir->mask_keydown = 0x010000;
 		ir->polling      = 50; // ms
 		break;

 	case BTTV_BOARD_AVDVBT_761:
 	case BTTV_BOARD_AVDVBT_771:
 		ir_codes         = ir_codes_avermedia_dvbt;
 		ir->mask_keycode = 0x0f00c0;
 		ir->mask_keydown = 0x000020;
 		ir->polling      = 50; // ms
 		break;

 	case BTTV_BOARD_PXELVWPLTVPAK:
 		ir_codes         = ir_codes_pixelview;
 		ir->mask_keycode = 0x003e00;
 		ir->mask_keyup   = 0x010000;
 		ir->polling      = 50; // ms
 		break;
 	case BTTV_BOARD_PV_M4900:
 	case BTTV_BOARD_PV_BT878P_9B:
 	case BTTV_BOARD_PV_BT878P_PLUS:
 		ir_codes         = ir_codes_pixelview;
 		ir->mask_keycode = 0x001f00;
 		ir->mask_keyup   = 0x008000;
 		ir->polling      = 50; // ms
 		break;

 	case BTTV_BOARD_WINFAST2000:
 		ir_codes         = ir_codes_winfast;
 		ir->mask_keycode = 0x1f8;
 		break;
 	case BTTV_BOARD_MAGICTVIEW061:
 	case BTTV_BOARD_MAGICTVIEW063:
 		ir_codes         = ir_codes_winfast;
 		ir->mask_keycode = 0x0008e000;
 		ir->mask_keydown = 0x00200000;
 		break;
 	case BTTV_BOARD_APAC_VIEWCOMP:
 		ir_codes         = ir_codes_apac_viewcomp;
 		ir->mask_keycode = 0x001f00;
 		ir->mask_keyup   = 0x008000;
 		ir->polling      = 50; // ms
 		break;
 	case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
 	case BTTV_BOARD_CONTVFMI:
 		ir_codes         = ir_codes_pixelview;
 		ir->mask_keycode = 0x001F00;
 		ir->mask_keyup   = 0x006000;
 		ir->polling      = 50; // ms
 		break;
 	case BTTV_BOARD_NEBULA_DIGITV:
 		ir_codes = ir_codes_nebula;
 		btv->custom_irq = bttv_rc5_irq;
 		ir->rc5_gpio = 1;
 		break;
 	case BTTV_BOARD_MACHTV_MAGICTV:
 		ir_codes         = ir_codes_apac_viewcomp;
 		ir->mask_keycode = 0x001F00;
 		ir->mask_keyup   = 0x004000;
 		ir->polling      = 50; /* ms */
 		break;
 	}
 	if (NULL == ir_codes) {
 		dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
 		err = -ENODEV;
 		goto err_out_free;
 	}

 	if (ir->rc5_gpio) {
 		u32 gpio;
 		/* enable remote irq */
 		bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
 		gpio = bttv_gpio_read(&btv->c);
 		bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
 		bttv_gpio_write(&btv->c, gpio | (1 << 4));
 	} else {
 		/* init hardware-specific stuff */
 		bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
 	}

 	/* init input device */
 	ir->dev = input_dev;

 	snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
 		 btv->c.type);
 	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
 		 pci_name(btv->c.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 (btv->c.pci->subsystem_vendor) {
 		input_dev->id.vendor  = btv->c.pci->subsystem_vendor;
 		input_dev->id.product = btv->c.pci->subsystem_device;
 	} else {
 		input_dev->id.vendor  = btv->c.pci->vendor;
 		input_dev->id.product = btv->c.pci->device;
 	}
 	input_dev->dev.parent = &btv->c.pci->dev;

 	btv->remote = ir;
 	bttv_ir_start(btv, ir);

 	/* all done */
 	err = input_register_device(btv->remote->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:
 	bttv_ir_stop(btv);
 	btv->remote = NULL;
  err_out_free:
 	input_free_device(input_dev);
 	kfree(ir);
 	return err;
 }

 void bttv_input_fini(struct bttv *btv)
 {
 	if (btv->remote == NULL)
 		return;

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


 /*
  * Local variables:
  * c-basic-offset: 8
  * End:
  */
	/*
	*
	* Copyright (c) 2003 Gerd Knorr
	* Copyright (c) 2003 Pavel Machek
	*
	* 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 "bttv.h"
	#include "bttvp.h"


	static int debug;
	module_param(debug, int, 0644); /* debug level (0,1,2) */
	static int repeat_delay = 500;
	module_param(repeat_delay, int, 0644);
	static int repeat_period = 33;
	module_param(repeat_period, int, 0644);

	static int ir_rc5_remote_gap = 885;
	module_param(ir_rc5_remote_gap, int, 0644);
	static int ir_rc5_key_timeout = 200;
	module_param(ir_rc5_key_timeout, int, 0644);

	#define DEVNAME "bttv-input"

	/* ---------------------------------------------------------------------- */

	static void ir_handle_key(struct bttv *btv)
	{
	struct card_ir *ir = btv->remote;
	u32 gpio,data;

	/* read gpio value */
	gpio = bttv_gpio_read(&btv->c);
	if (ir->polling) {
	if (ir->last_gpio == gpio)
	return;
	ir->last_gpio = gpio;
	}

	/* extract data */
	data = ir_extract_bits(gpio, ir->mask_keycode);
	dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d \| %s%s%s\n",
	gpio, data,
	ir->polling ? "poll" : "irq",
	(gpio & ir->mask_keydown) ? " down" : "",
	(gpio & ir->mask_keyup) ? " up" : "");

	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);
	}

	}

	void bttv_input_irq(struct bttv *btv)
	{
	struct card_ir *ir = btv->remote;

	if (!ir->polling)
	ir_handle_key(btv);
	}

	static void bttv_input_timer(unsigned long data)
	{
	struct bttv btv = (struct bttv)data;
	struct card_ir *ir = btv->remote;

	ir_handle_key(btv);
	mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
	}

	/* ---------------------------------------------------------------*/

	static int bttv_rc5_irq(struct bttv *btv)
	{
	struct card_ir *ir = btv->remote;
	struct timeval tv;
	u32 gpio;
	u32 gap;
	unsigned long current_jiffies;

	/* read gpio port */
	gpio = bttv_gpio_read(&btv->c);

	/* remote IRQ? */
	if (!(gpio & 0x20))
	return 0;

	/* 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;

	mod_timer(&ir->timer_end,
	current_jiffies + msecs_to_jiffies(30));
	}

	/* toggle GPIO pin 4 to reset the irq */
	bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
	bttv_gpio_write(&btv->c, gpio \| (1 << 4));
	return 1;
	}

	/* ---------------------------------------------------------------------- */

	static void bttv_ir_start(struct bttv btv, struct card_ir ir)
	{
	if (ir->polling) {
	setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
	ir->timer.expires = jiffies + msecs_to_jiffies(1000);
	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 = 1;
	ir->start = 3;
	ir->addr = 0x0;
	ir->rc5_key_timeout = ir_rc5_key_timeout;
	ir->rc5_remote_gap = ir_rc5_remote_gap;
	}
	}

	static void bttv_ir_stop(struct bttv *btv)
	{
	if (btv->remote->polling) {
	del_timer_sync(&btv->remote->timer);
	flush_scheduled_work();
	}

	if (btv->remote->rc5_gpio) {
	u32 gpio;

	del_timer_sync(&btv->remote->timer_end);
	flush_scheduled_work();

	gpio = bttv_gpio_read(&btv->c);
	bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
	}
	}

	int bttv_input_init(struct bttv *btv)
	{
	struct card_ir *ir;
	IR_KEYTAB_TYPE *ir_codes = NULL;
	struct input_dev *input_dev;
	int ir_type = IR_TYPE_OTHER;
	int err = -ENOMEM;

	if (!btv->has_remote)
	return -ENODEV;

	ir = kzalloc(sizeof(*ir),GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!ir \|\| !input_dev)
	goto err_out_free;

	/* detect & configure */
	switch (btv->c.type) {
	case BTTV_BOARD_AVERMEDIA:
	case BTTV_BOARD_AVPHONE98:
	case BTTV_BOARD_AVERMEDIA98:
	ir_codes = ir_codes_avermedia;
	ir->mask_keycode = 0xf88000;
	ir->mask_keydown = 0x010000;
	ir->polling = 50; // ms
	break;

	case BTTV_BOARD_AVDVBT_761:
	case BTTV_BOARD_AVDVBT_771:
	ir_codes = ir_codes_avermedia_dvbt;
	ir->mask_keycode = 0x0f00c0;
	ir->mask_keydown = 0x000020;
	ir->polling = 50; // ms
	break;

	case BTTV_BOARD_PXELVWPLTVPAK:
	ir_codes = ir_codes_pixelview;
	ir->mask_keycode = 0x003e00;
	ir->mask_keyup = 0x010000;
	ir->polling = 50; // ms
	break;
	case BTTV_BOARD_PV_M4900:
	case BTTV_BOARD_PV_BT878P_9B:
	case BTTV_BOARD_PV_BT878P_PLUS:
	ir_codes = ir_codes_pixelview;
	ir->mask_keycode = 0x001f00;
	ir->mask_keyup = 0x008000;
	ir->polling = 50; // ms
	break;

	case BTTV_BOARD_WINFAST2000:
	ir_codes = ir_codes_winfast;
	ir->mask_keycode = 0x1f8;
	break;
	case BTTV_BOARD_MAGICTVIEW061:
	case BTTV_BOARD_MAGICTVIEW063:
	ir_codes = ir_codes_winfast;
	ir->mask_keycode = 0x0008e000;
	ir->mask_keydown = 0x00200000;
	break;
	case BTTV_BOARD_APAC_VIEWCOMP:
	ir_codes = ir_codes_apac_viewcomp;
	ir->mask_keycode = 0x001f00;
	ir->mask_keyup = 0x008000;
	ir->polling = 50; // ms
	break;
	case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
	case BTTV_BOARD_CONTVFMI:
	ir_codes = ir_codes_pixelview;
	ir->mask_keycode = 0x001F00;
	ir->mask_keyup = 0x006000;
	ir->polling = 50; // ms
	break;
	case BTTV_BOARD_NEBULA_DIGITV:
	ir_codes = ir_codes_nebula;
	btv->custom_irq = bttv_rc5_irq;
	ir->rc5_gpio = 1;
	break;
	case BTTV_BOARD_MACHTV_MAGICTV:
	ir_codes = ir_codes_apac_viewcomp;
	ir->mask_keycode = 0x001F00;
	ir->mask_keyup = 0x004000;
	ir->polling = 50; /* ms */
	break;
	}
	if (NULL == ir_codes) {
	dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
	err = -ENODEV;
	goto err_out_free;
	}

	if (ir->rc5_gpio) {
	u32 gpio;
	/* enable remote irq */
	bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
	gpio = bttv_gpio_read(&btv->c);
	bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
	bttv_gpio_write(&btv->c, gpio \| (1 << 4));
	} else {
	/* init hardware-specific stuff */
	bttv_gpio_inout(&btv->c, ir->mask_keycode \| ir->mask_keydown, 0);
	}

	/* init input device */
	ir->dev = input_dev;

	snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
	btv->c.type);
	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
	pci_name(btv->c.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 (btv->c.pci->subsystem_vendor) {
	input_dev->id.vendor = btv->c.pci->subsystem_vendor;
	input_dev->id.product = btv->c.pci->subsystem_device;
	} else {
	input_dev->id.vendor = btv->c.pci->vendor;
	input_dev->id.product = btv->c.pci->device;
	}
	input_dev->dev.parent = &btv->c.pci->dev;

	btv->remote = ir;
	bttv_ir_start(btv, ir);

	/* all done */
	err = input_register_device(btv->remote->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:
	bttv_ir_stop(btv);
	btv->remote = NULL;
	err_out_free:
	input_free_device(input_dev);
	kfree(ir);
	return err;
	}

	void bttv_input_fini(struct bttv *btv)
	{
	if (btv->remote == NULL)
	return;

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


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