[linux-2.6-block.git] / drivers / media / video / cx88 / cx88-input.c

/*
 *
 * Device driver for GPIO attached remote control interfaces
 * on Conexant 2388x based TV/DVB cards.
 *
 * Copyright (c) 2003 Pavel Machek
 * Copyright (c) 2004 Gerd Knorr
 * Copyright (c) 2004, 2005 Chris Pascoe
 *
 * 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/init.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/pci.h>
#include <linux/module.h>
#include <linux/moduleparam.h>

#include "cx88.h"
#include <media/ir-common.h>

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

struct cx88_IR {
	struct cx88_core *core;
	struct input_dev *input;
	struct ir_input_state ir;
	char name[32];
	char phys[32];

	/* sample from gpio pin 16 */
	u32 sampling;
	u32 samples[16];
	int scount;
	unsigned long release;

	/* poll external decoder */
	int polling;
	struct work_struct work;
	struct timer_list timer;
	u32 gpio_addr;
	u32 last_gpio;
	u32 mask_keycode;
	u32 mask_keydown;
	u32 mask_keyup;
};

static int ir_debug = 0;
module_param(ir_debug, int, 0644);	/* debug level [IR] */
MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");

#define ir_dprintk(fmt, arg...)	if (ir_debug) \
	printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)

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

static void cx88_ir_handle_key(struct cx88_IR *ir)
{
	struct cx88_core *core = ir->core;
	u32 gpio, data, auxgpio;

	/* read gpio value */
	gpio = cx_read(ir->gpio_addr);
	switch (core->board) {
	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
		/* This board apparently uses a combination of 2 GPIO
		   to represent the keys. Additionally, the second GPIO
		   can be used for parity.

		   Example:

		   for key "5"
			gpio = 0x758, auxgpio = 0xe5 or 0xf5
		   for key "Power"
			gpio = 0x758, auxgpio = 0xed or 0xfd
		 */

		auxgpio = cx_read(MO_GP1_IO);
		/* Take out the parity part */
		gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
		break;
	case CX88_BOARD_WINFAST_DTV1000:
		gpio = (gpio & 0x6ff) | ((cx_read(MO_GP1_IO) << 8) & 0x900);
		auxgpio = gpio;
		break;
	default:
		auxgpio = gpio;
	}
	if (ir->polling) {
		if (ir->last_gpio == auxgpio)
			return;
		ir->last_gpio = auxgpio;
	}

	/* extract data */
	data = ir_extract_bits(gpio, ir->mask_keycode);
	ir_dprintk("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->core->board == CX88_BOARD_NORWOOD_MICRO) {
		u32 gpio_key = cx_read(MO_GP0_IO);

		data = (data << 4) | ((gpio_key & 0xf0) >> 4);

		ir_input_keydown(ir->input, &ir->ir, data, data);
		ir_input_nokey(ir->input, &ir->ir);

	} else if (ir->mask_keydown) {
		/* bit set on keydown */
		if (gpio & ir->mask_keydown) {
			ir_input_keydown(ir->input, &ir->ir, data, data);
		} else {
			ir_input_nokey(ir->input, &ir->ir);
		}

	} else if (ir->mask_keyup) {
		/* bit cleared on keydown */
		if (0 == (gpio & ir->mask_keyup)) {
			ir_input_keydown(ir->input, &ir->ir, data, data);
		} else {
			ir_input_nokey(ir->input, &ir->ir);
		}

	} else {
		/* can't distinguish keydown/up :-/ */
		ir_input_keydown(ir->input, &ir->ir, data, data);
		ir_input_nokey(ir->input, &ir->ir);
	}
}

static void ir_timer(unsigned long data)
{
	struct cx88_IR *ir = (struct cx88_IR *)data;

	schedule_work(&ir->work);
}

static void cx88_ir_work(struct work_struct *work)
{
	struct cx88_IR *ir = container_of(work, struct cx88_IR, work);

	cx88_ir_handle_key(ir);
	mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
}

static void cx88_ir_start(struct cx88_core *core, struct cx88_IR *ir)
{
	if (ir->polling) {
		setup_timer(&ir->timer, ir_timer, (unsigned long)ir);
		INIT_WORK(&ir->work, cx88_ir_work);
		schedule_work(&ir->work);
	}
	if (ir->sampling) {
		core->pci_irqmask |= (1 << 18);	/* IR_SMP_INT */
		cx_write(MO_DDS_IO, 0xa80a80);	/* 4 kHz sample rate */
		cx_write(MO_DDSCFG_IO, 0x5);	/* enable */
	}
}

static void cx88_ir_stop(struct cx88_core *core, struct cx88_IR *ir)
{
	if (ir->sampling) {
		cx_write(MO_DDSCFG_IO, 0x0);
		core->pci_irqmask &= ~(1 << 18);
	}

	if (ir->polling) {
		del_timer_sync(&ir->timer);
		flush_scheduled_work();
	}
}

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

int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
{
	struct cx88_IR *ir;
	struct input_dev *input_dev;
	IR_KEYTAB_TYPE *ir_codes = NULL;
	int ir_type = IR_TYPE_OTHER;
	int err = -ENOMEM;

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

	ir->input = input_dev;

	/* detect & configure */
	switch (core->board) {
	case CX88_BOARD_DNTV_LIVE_DVB_T:
	case CX88_BOARD_KWORLD_DVB_T:
	case CX88_BOARD_KWORLD_DVB_T_CX22702:
		ir_codes = ir_codes_dntv_live_dvb_t;
		ir->gpio_addr = MO_GP1_IO;
		ir->mask_keycode = 0x1f;
		ir->mask_keyup = 0x60;
		ir->polling = 50; /* ms */
		break;
	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
		ir_codes = ir_codes_cinergy_1400;
		ir_type = IR_TYPE_PD;
		ir->sampling = 0xeb04; /* address */
		break;
	case CX88_BOARD_HAUPPAUGE:
	case CX88_BOARD_HAUPPAUGE_DVB_T1:
	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
	case CX88_BOARD_HAUPPAUGE_HVR1100:
	case CX88_BOARD_HAUPPAUGE_HVR3000:
		ir_codes = ir_codes_hauppauge_new;
		ir_type = IR_TYPE_RC5;
		ir->sampling = 1;
		break;
	case CX88_BOARD_WINFAST_DTV2000H:
		ir_codes = ir_codes_winfast;
		ir->gpio_addr = MO_GP0_IO;
		ir->mask_keycode = 0x8f8;
		ir->mask_keyup = 0x100;
		ir->polling = 50; /* ms */
		break;
	case CX88_BOARD_WINFAST2000XP_EXPERT:
	case CX88_BOARD_WINFAST_DTV1000:
		ir_codes = ir_codes_winfast;
		ir->gpio_addr = MO_GP0_IO;
		ir->mask_keycode = 0x8f8;
		ir->mask_keyup = 0x100;
		ir->polling = 1; /* ms */
		break;
	case CX88_BOARD_IODATA_GVBCTV7E:
		ir_codes = ir_codes_iodata_bctv7e;
		ir->gpio_addr = MO_GP0_IO;
		ir->mask_keycode = 0xfd;
		ir->mask_keydown = 0x02;
		ir->polling = 5; /* ms */
		break;
	case CX88_BOARD_PROLINK_PLAYTVPVR:
	case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
		ir_codes = ir_codes_pixelview;
		ir->gpio_addr = MO_GP1_IO;
		ir->mask_keycode = 0x1f;
		ir->mask_keyup = 0x80;
		ir->polling = 1; /* ms */
		break;
	case CX88_BOARD_KWORLD_LTV883:
		ir_codes = ir_codes_pixelview;
		ir->gpio_addr = MO_GP1_IO;
		ir->mask_keycode = 0x1f;
		ir->mask_keyup = 0x60;
		ir->polling = 1; /* ms */
		break;
	case CX88_BOARD_ADSTECH_DVB_T_PCI:
		ir_codes = ir_codes_adstech_dvb_t_pci;
		ir->gpio_addr = MO_GP1_IO;
		ir->mask_keycode = 0xbf;
		ir->mask_keyup = 0x40;
		ir->polling = 50; /* ms */
		break;
	case CX88_BOARD_MSI_TVANYWHERE_MASTER:
		ir_codes = ir_codes_msi_tvanywhere;
		ir->gpio_addr = MO_GP1_IO;
		ir->mask_keycode = 0x1f;
		ir->mask_keyup = 0x40;
		ir->polling = 1; /* ms */
		break;
	case CX88_BOARD_AVERTV_303:
	case CX88_BOARD_AVERTV_STUDIO_303:
		ir_codes         = ir_codes_avertv_303;
		ir->gpio_addr    = MO_GP2_IO;
		ir->mask_keycode = 0xfb;
		ir->mask_keydown = 0x02;
		ir->polling      = 50; /* ms */
		break;
	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
		ir_codes = ir_codes_dntv_live_dvbt_pro;
		ir_type = IR_TYPE_PD;
		ir->sampling = 0xff00; /* address */
		break;
	case CX88_BOARD_NORWOOD_MICRO:
		ir_codes         = ir_codes_norwood;
		ir->gpio_addr    = MO_GP1_IO;
		ir->mask_keycode = 0x0e;
		ir->mask_keyup   = 0x80;
		ir->polling      = 50; /* ms */
		break;
	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
		ir_codes = ir_codes_npgtech;
		ir->gpio_addr = MO_GP0_IO;
		ir->mask_keycode = 0xfa;
		ir->polling = 50; /* ms */
		break;
	}

	if (NULL == ir_codes) {
		err = -ENODEV;
		goto err_out_free;
	}

	/* init input device */
	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)",
		 cx88_boards[core->board].name);
	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(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 (pci->subsystem_vendor) {
		input_dev->id.vendor = pci->subsystem_vendor;
		input_dev->id.product = pci->subsystem_device;
	} else {
		input_dev->id.vendor = pci->vendor;
		input_dev->id.product = pci->device;
	}
	input_dev->dev.parent = &pci->dev;
	/* record handles to ourself */
	ir->core = core;
	core->ir = ir;

	cx88_ir_start(core, ir);

	/* all done */
	err = input_register_device(ir->input);
	if (err)
		goto err_out_stop;

	return 0;

 err_out_stop:
	cx88_ir_stop(core, ir);
	core->ir = NULL;
 err_out_free:
	input_free_device(input_dev);
	kfree(ir);
	return err;
}

int cx88_ir_fini(struct cx88_core *core)
{
	struct cx88_IR *ir = core->ir;

	/* skip detach on non attached boards */
	if (NULL == ir)
		return 0;

	cx88_ir_stop(core, ir);
	input_unregister_device(ir->input);
	kfree(ir);

	/* done */
	core->ir = NULL;
	return 0;
}

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

void cx88_ir_irq(struct cx88_core *core)
{
	struct cx88_IR *ir = core->ir;
	u32 samples, ircode;
	int i;

	if (NULL == ir)
		return;
	if (!ir->sampling)
		return;

	samples = cx_read(MO_SAMPLE_IO);
	if (0 != samples && 0xffffffff != samples) {
		/* record sample data */
		if (ir->scount < ARRAY_SIZE(ir->samples))
			ir->samples[ir->scount++] = samples;
		return;
	}
	if (!ir->scount) {
		/* nothing to sample */
		if (ir->ir.keypressed && time_after(jiffies, ir->release))
			ir_input_nokey(ir->input, &ir->ir);
		return;
	}

	/* have a complete sample */
	if (ir->scount < ARRAY_SIZE(ir->samples))
		ir->samples[ir->scount++] = samples;
	for (i = 0; i < ir->scount; i++)
		ir->samples[i] = ~ir->samples[i];
	if (ir_debug)
		ir_dump_samples(ir->samples, ir->scount);

	/* decode it */
	switch (core->board) {
	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
		ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);

		if (ircode == 0xffffffff) { /* decoding error */
			ir_dprintk("pulse distance decoding error\n");
			break;
		}

		ir_dprintk("pulse distance decoded: %x\n", ircode);

		if (ircode == 0) { /* key still pressed */
			ir_dprintk("pulse distance decoded repeat code\n");
			ir->release = jiffies + msecs_to_jiffies(120);
			break;
		}

		if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
			ir_dprintk("pulse distance decoded wrong address\n");
			break;
		}

		if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
			ir_dprintk("pulse distance decoded wrong check sum\n");
			break;
		}

		ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);

		ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
		ir->release = jiffies + msecs_to_jiffies(120);
		break;
	case CX88_BOARD_HAUPPAUGE:
	case CX88_BOARD_HAUPPAUGE_DVB_T1:
	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
	case CX88_BOARD_HAUPPAUGE_HVR1100:
	case CX88_BOARD_HAUPPAUGE_HVR3000:
		ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
		ir_dprintk("biphase decoded: %x\n", ircode);
		if ((ircode & 0xfffff000) != 0x3000)
			break;
		ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode);
		ir->release = jiffies + msecs_to_jiffies(120);
		break;
	}

	ir->scount = 0;
	return;
}

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

MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
MODULE_LICENSE("GPL");
/*
 * Local variables:
 * c-basic-offset: 8
 * End:
 */
Commit	Line	Data
1da177e4	1	/*
1da177e4 LT	2	*
	3	* Device driver for GPIO attached remote control interfaces
	4	* on Conexant 2388x based TV/DVB cards.
	5	*
	6	* Copyright (c) 2003 Pavel Machek
	7	* Copyright (c) 2004 Gerd Knorr
fc40b261	8	* Copyright (c) 2004, 2005 Chris Pascoe
1da177e4 LT	9	*
	10	* This program is free software; you can redistribute it and/or modify
	11	* it under the terms of the GNU General Public License as published by
	12	* the Free Software Foundation; either version 2 of the License, or
	13	* (at your option) any later version.
	14	*
	15	* This program is distributed in the hope that it will be useful,
	16	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	17	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	18	* GNU General Public License for more details.
	19	*
	20	* You should have received a copy of the GNU General Public License
	21	* along with this program; if not, write to the Free Software
	22	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	23	*/
	24
	25	#include <linux/init.h>
	26	#include <linux/delay.h>
	27	#include <linux/input.h>
	28	#include <linux/pci.h>
	29	#include <linux/module.h>
	30	#include <linux/moduleparam.h>
	31
1da177e4	32	#include "cx88.h"
d21838dd	33	#include <media/ir-common.h>
1da177e4 LT	34
	35	/* ---------------------------------------------------------------------- */
	36
1da177e4	37	struct cx88_IR {
41ef7c1e	38	struct cx88_core *core;
b7df3910	39	struct input_dev *input;
41ef7c1e MCC	40	struct ir_input_state ir;
	41	char name[32];
	42	char phys[32];
1da177e4 LT	43
1da177e4 LT	44	/* sample from gpio pin 16 */
fc40b261	45	u32 sampling;
41ef7c1e MCC	46	u32 samples[16];
	47	int scount;
	48	unsigned long release;
1da177e4 LT	49
1da177e4 LT	50	/* poll external decoder */
41ef7c1e MCC	51	int polling;
	52	struct work_struct work;
	53	struct timer_list timer;
	54	u32 gpio_addr;
	55	u32 last_gpio;
	56	u32 mask_keycode;
	57	u32 mask_keydown;
	58	u32 mask_keyup;
1da177e4 LT	59	};
	60
	61	static int ir_debug = 0;
41ef7c1e	62	module_param(ir_debug, int, 0644); /* debug level [IR] */
1da177e4 LT	63	MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
	64
	65	#define ir_dprintk(fmt, arg...) if (ir_debug) \
e52e98a7	66	printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
1da177e4 LT	67
	68	/* ---------------------------------------------------------------------- */
	69
	70	static void cx88_ir_handle_key(struct cx88_IR *ir)
	71	{
	72	struct cx88_core *core = ir->core;
680543c5	73	u32 gpio, data, auxgpio;
1da177e4 LT	74
	75	/* read gpio value */
	76	gpio = cx_read(ir->gpio_addr);
829ea964 MK	77	switch (core->board) {
829ea964 MK	78	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
680543c5 RC	79	/* This board apparently uses a combination of 2 GPIO
	80	to represent the keys. Additionally, the second GPIO
	81	can be used for parity.
	82
	83	Example:
	84
	85	for key "5"
	86	gpio = 0x758, auxgpio = 0xe5 or 0xf5
	87	for key "Power"
	88	gpio = 0x758, auxgpio = 0xed or 0xfd
	89	*/
	90
	91	auxgpio = cx_read(MO_GP1_IO);
	92	/* Take out the parity part */
a62c61d3	93	gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
829ea964 MK	94	break;
829ea964 MK	95	case CX88_BOARD_WINFAST_DTV1000:
e7d11ecb EP	96	gpio = (gpio & 0x6ff) \| ((cx_read(MO_GP1_IO) << 8) & 0x900);
e7d11ecb EP	97	auxgpio = gpio;
829ea964 MK	98	break;
829ea964 MK	99	default:
680543c5	100	auxgpio = gpio;
829ea964	101	}
1da177e4	102	if (ir->polling) {
680543c5	103	if (ir->last_gpio == auxgpio)
1da177e4	104	return;
680543c5	105	ir->last_gpio = auxgpio;
1da177e4 LT	106	}
	107
	108	/* extract data */
	109	data = ir_extract_bits(gpio, ir->mask_keycode);
	110	ir_dprintk("irq gpio=0x%x code=%d \| %s%s%s\n",
41ef7c1e MCC	111	gpio, data,
	112	ir->polling ? "poll" : "irq",
	113	(gpio & ir->mask_keydown) ? " down" : "",
	114	(gpio & ir->mask_keyup) ? " up" : "");
1da177e4	115
d1009bd7 PN	116	if (ir->core->board == CX88_BOARD_NORWOOD_MICRO) {
	117	u32 gpio_key = cx_read(MO_GP0_IO);
	118
	119	data = (data << 4) \| ((gpio_key & 0xf0) >> 4);
	120
	121	ir_input_keydown(ir->input, &ir->ir, data, data);
	122	ir_input_nokey(ir->input, &ir->ir);
	123
	124	} else if (ir->mask_keydown) {
1da177e4 LT	125	/* bit set on keydown */
1da177e4 LT	126	if (gpio & ir->mask_keydown) {
b7df3910	127	ir_input_keydown(ir->input, &ir->ir, data, data);
1da177e4	128	} else {
b7df3910	129	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	130	}
	131
	132	} else if (ir->mask_keyup) {
	133	/* bit cleared on keydown */
	134	if (0 == (gpio & ir->mask_keyup)) {
b7df3910	135	ir_input_keydown(ir->input, &ir->ir, data, data);
1da177e4	136	} else {
b7df3910	137	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	138	}
	139
	140	} else {
	141	/* can't distinguish keydown/up :-/ */
b7df3910 DT	142	ir_input_keydown(ir->input, &ir->ir, data, data);
b7df3910 DT	143	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	144	}
	145	}
	146
	147	static void ir_timer(unsigned long data)
	148	{
41ef7c1e	149	struct cx88_IR ir = (struct cx88_IR )data;
1da177e4 LT	150
	151	schedule_work(&ir->work);
	152	}
	153
c4028958	154	static void cx88_ir_work(struct work_struct *work)
1da177e4	155	{
c4028958	156	struct cx88_IR *ir = container_of(work, struct cx88_IR, work);
1da177e4 LT	157
1da177e4 LT	158	cx88_ir_handle_key(ir);
749823a0	159	mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
1da177e4 LT	160	}
1da177e4 LT	161
b07b4783 DT	162	static void cx88_ir_start(struct cx88_core core, struct cx88_IR ir)
	163	{
	164	if (ir->polling) {
749823a0	165	setup_timer(&ir->timer, ir_timer, (unsigned long)ir);
67952e8c	166	INIT_WORK(&ir->work, cx88_ir_work);
b07b4783 DT	167	schedule_work(&ir->work);
	168	}
	169	if (ir->sampling) {
	170	core->pci_irqmask \|= (1 << 18); /* IR_SMP_INT */
	171	cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */
	172	cx_write(MO_DDSCFG_IO, 0x5); /* enable */
	173	}
	174	}
	175
	176	static void cx88_ir_stop(struct cx88_core core, struct cx88_IR ir)
	177	{
	178	if (ir->sampling) {
	179	cx_write(MO_DDSCFG_IO, 0x0);
	180	core->pci_irqmask &= ~(1 << 18);
	181	}
	182
	183	if (ir->polling) {
	184	del_timer_sync(&ir->timer);
	185	flush_scheduled_work();
	186	}
	187	}
	188
1da177e4 LT	189	/* ---------------------------------------------------------------------- */
	190
	191	int cx88_ir_init(struct cx88_core core, struct pci_dev pci)
	192	{
	193	struct cx88_IR *ir;
b7df3910	194	struct input_dev *input_dev;
1da177e4 LT	195	IR_KEYTAB_TYPE *ir_codes = NULL;
1da177e4 LT	196	int ir_type = IR_TYPE_OTHER;
b07b4783	197	int err = -ENOMEM;
1da177e4	198
b7df3910 DT	199	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
b7df3910 DT	200	input_dev = input_allocate_device();
b07b4783 DT	201	if (!ir \|\| !input_dev)
b07b4783 DT	202	goto err_out_free;
b7df3910 DT	203
b7df3910 DT	204	ir->input = input_dev;
1da177e4 LT	205
	206	/* detect & configure */
	207	switch (core->board) {
	208	case CX88_BOARD_DNTV_LIVE_DVB_T:
b45009b0	209	case CX88_BOARD_KWORLD_DVB_T:
28ecc449	210	case CX88_BOARD_KWORLD_DVB_T_CX22702:
41ef7c1e MCC	211	ir_codes = ir_codes_dntv_live_dvb_t;
41ef7c1e MCC	212	ir->gpio_addr = MO_GP1_IO;
1da177e4	213	ir->mask_keycode = 0x1f;
41ef7c1e MCC	214	ir->mask_keyup = 0x60;
41ef7c1e MCC	215	ir->polling = 50; /* ms */
1da177e4	216	break;
e52e98a7 MCC	217	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
	218	ir_codes = ir_codes_cinergy_1400;
	219	ir_type = IR_TYPE_PD;
fc40b261	220	ir->sampling = 0xeb04; /* address */
e52e98a7	221	break;
1da177e4 LT	222	case CX88_BOARD_HAUPPAUGE:
1da177e4 LT	223	case CX88_BOARD_HAUPPAUGE_DVB_T1:
fb56cb65 ST	224	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
fb56cb65 ST	225	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
611900c1	226	case CX88_BOARD_HAUPPAUGE_HVR1100:
76dc82ab	227	case CX88_BOARD_HAUPPAUGE_HVR3000:
41ef7c1e MCC	228	ir_codes = ir_codes_hauppauge_new;
	229	ir_type = IR_TYPE_RC5;
	230	ir->sampling = 1;
1da177e4	231	break;
2de873e6	232	case CX88_BOARD_WINFAST_DTV2000H:
41ef7c1e MCC	233	ir_codes = ir_codes_winfast;
41ef7c1e MCC	234	ir->gpio_addr = MO_GP0_IO;
1da177e4	235	ir->mask_keycode = 0x8f8;
41ef7c1e	236	ir->mask_keyup = 0x100;
2de873e6	237	ir->polling = 50; /* ms */
1da177e4	238	break;
ff97d93d	239	case CX88_BOARD_WINFAST2000XP_EXPERT:
e7d11ecb	240	case CX88_BOARD_WINFAST_DTV1000:
ff97d93d HP	241	ir_codes = ir_codes_winfast;
	242	ir->gpio_addr = MO_GP0_IO;
	243	ir->mask_keycode = 0x8f8;
	244	ir->mask_keyup = 0x100;
	245	ir->polling = 1; /* ms */
	246	break;
1da177e4	247	case CX88_BOARD_IODATA_GVBCTV7E:
41ef7c1e MCC	248	ir_codes = ir_codes_iodata_bctv7e;
41ef7c1e MCC	249	ir->gpio_addr = MO_GP0_IO;
1da177e4 LT	250	ir->mask_keycode = 0xfd;
1da177e4 LT	251	ir->mask_keydown = 0x02;
41ef7c1e	252	ir->polling = 5; /* ms */
1da177e4	253	break;
ff97d93d	254	case CX88_BOARD_PROLINK_PLAYTVPVR:
239df2e2	255	case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
41ef7c1e MCC	256	ir_codes = ir_codes_pixelview;
41ef7c1e MCC	257	ir->gpio_addr = MO_GP1_IO;
239df2e2	258	ir->mask_keycode = 0x1f;
41ef7c1e MCC	259	ir->mask_keyup = 0x80;
41ef7c1e MCC	260	ir->polling = 1; /* ms */
239df2e2	261	break;
b639f9d2 NS	262	case CX88_BOARD_KWORLD_LTV883:
	263	ir_codes = ir_codes_pixelview;
	264	ir->gpio_addr = MO_GP1_IO;
	265	ir->mask_keycode = 0x1f;
	266	ir->mask_keyup = 0x60;
	267	ir->polling = 1; /* ms */
	268	break;
a82decf6	269	case CX88_BOARD_ADSTECH_DVB_T_PCI:
41ef7c1e MCC	270	ir_codes = ir_codes_adstech_dvb_t_pci;
41ef7c1e MCC	271	ir->gpio_addr = MO_GP1_IO;
a82decf6	272	ir->mask_keycode = 0xbf;
41ef7c1e MCC	273	ir->mask_keyup = 0x40;
	274	ir->polling = 50; /* ms */
	275	break;
	276	case CX88_BOARD_MSI_TVANYWHERE_MASTER:
	277	ir_codes = ir_codes_msi_tvanywhere;
	278	ir->gpio_addr = MO_GP1_IO;
	279	ir->mask_keycode = 0x1f;
	280	ir->mask_keyup = 0x40;
	281	ir->polling = 1; /* ms */
a82decf6	282	break;
899ad11b	283	case CX88_BOARD_AVERTV_303:
565f4949	284	case CX88_BOARD_AVERTV_STUDIO_303:
899ad11b GG	285	ir_codes = ir_codes_avertv_303;
	286	ir->gpio_addr = MO_GP2_IO;
	287	ir->mask_keycode = 0xfb;
	288	ir->mask_keydown = 0x02;
	289	ir->polling = 50; /* ms */
	290	break;
fc40b261 CP	291	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
	292	ir_codes = ir_codes_dntv_live_dvbt_pro;
	293	ir_type = IR_TYPE_PD;
	294	ir->sampling = 0xff00; /* address */
	295	break;
d1009bd7 PN	296	case CX88_BOARD_NORWOOD_MICRO:
	297	ir_codes = ir_codes_norwood;
	298	ir->gpio_addr = MO_GP1_IO;
	299	ir->mask_keycode = 0x0e;
	300	ir->mask_keyup = 0x80;
	301	ir->polling = 50; /* ms */
	302	break;
be4f4519	303	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
680543c5 RC	304	ir_codes = ir_codes_npgtech;
	305	ir->gpio_addr = MO_GP0_IO;
	306	ir->mask_keycode = 0xfa;
	307	ir->polling = 50; /* ms */
	308	break;
1da177e4	309	}
b45009b0	310
1da177e4	311	if (NULL == ir_codes) {
b07b4783 DT	312	err = -ENODEV;
b07b4783 DT	313	goto err_out_free;
1da177e4 LT	314	}
	315
	316	/* init input device */
	317	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)",
	318	cx88_boards[core->board].name);
41ef7c1e	319	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
1da177e4	320
b7df3910 DT	321	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
	322	input_dev->name = ir->name;
	323	input_dev->phys = ir->phys;
	324	input_dev->id.bustype = BUS_PCI;
	325	input_dev->id.version = 1;
1da177e4	326	if (pci->subsystem_vendor) {
b7df3910 DT	327	input_dev->id.vendor = pci->subsystem_vendor;
b7df3910 DT	328	input_dev->id.product = pci->subsystem_device;
1da177e4	329	} else {
b7df3910 DT	330	input_dev->id.vendor = pci->vendor;
b7df3910 DT	331	input_dev->id.product = pci->device;
1da177e4	332	}
2c8a3a33	333	input_dev->dev.parent = &pci->dev;
1da177e4 LT	334	/* record handles to ourself */
	335	ir->core = core;
	336	core->ir = ir;
	337
b07b4783	338	cx88_ir_start(core, ir);
1da177e4 LT	339
1da177e4 LT	340	/* all done */
b07b4783 DT	341	err = input_register_device(ir->input);
	342	if (err)
	343	goto err_out_stop;
1da177e4 LT	344
1da177e4 LT	345	return 0;
b07b4783 DT	346
	347	err_out_stop:
	348	cx88_ir_stop(core, ir);
	349	core->ir = NULL;
	350	err_out_free:
	351	input_free_device(input_dev);
	352	kfree(ir);
	353	return err;
1da177e4 LT	354	}
	355
	356	int cx88_ir_fini(struct cx88_core *core)
	357	{
	358	struct cx88_IR *ir = core->ir;
	359
	360	/* skip detach on non attached boards */
	361	if (NULL == ir)
	362	return 0;
	363
b07b4783	364	cx88_ir_stop(core, ir);
b7df3910	365	input_unregister_device(ir->input);
1da177e4 LT	366	kfree(ir);
	367
	368	/* done */
	369	core->ir = NULL;
	370	return 0;
	371	}
	372
	373	/* ---------------------------------------------------------------------- */
	374
	375	void cx88_ir_irq(struct cx88_core *core)
	376	{
	377	struct cx88_IR *ir = core->ir;
e52e98a7	378	u32 samples, ircode;
1da177e4 LT	379	int i;
	380
	381	if (NULL == ir)
	382	return;
	383	if (!ir->sampling)
	384	return;
	385
	386	samples = cx_read(MO_SAMPLE_IO);
41ef7c1e	387	if (0 != samples && 0xffffffff != samples) {
1da177e4 LT	388	/* record sample data */
	389	if (ir->scount < ARRAY_SIZE(ir->samples))
	390	ir->samples[ir->scount++] = samples;
	391	return;
	392	}
	393	if (!ir->scount) {
	394	/* nothing to sample */
41ef7c1e	395	if (ir->ir.keypressed && time_after(jiffies, ir->release))
b7df3910	396	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	397	return;
	398	}
	399
	400	/* have a complete sample */
	401	if (ir->scount < ARRAY_SIZE(ir->samples))
	402	ir->samples[ir->scount++] = samples;
	403	for (i = 0; i < ir->scount; i++)
	404	ir->samples[i] = ~ir->samples[i];
	405	if (ir_debug)
41ef7c1e	406	ir_dump_samples(ir->samples, ir->scount);
1da177e4 LT	407
	408	/* decode it */
	409	switch (core->board) {
e52e98a7	410	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
fc40b261	411	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
e52e98a7 MCC	412	ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
	413
	414	if (ircode == 0xffffffff) { /* decoding error */
	415	ir_dprintk("pulse distance decoding error\n");
	416	break;
	417	}
	418
	419	ir_dprintk("pulse distance decoded: %x\n", ircode);
	420
	421	if (ircode == 0) { /* key still pressed */
	422	ir_dprintk("pulse distance decoded repeat code\n");
	423	ir->release = jiffies + msecs_to_jiffies(120);
	424	break;
	425	}
	426
fc40b261	427	if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
e52e98a7	428	ir_dprintk("pulse distance decoded wrong address\n");
4ac97914	429	break;
e52e98a7 MCC	430	}
	431
	432	if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
	433	ir_dprintk("pulse distance decoded wrong check sum\n");
	434	break;
	435	}
	436
	437	ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
	438
b7df3910	439	ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
e52e98a7 MCC	440	ir->release = jiffies + msecs_to_jiffies(120);
e52e98a7 MCC	441	break;
1da177e4 LT	442	case CX88_BOARD_HAUPPAUGE:
1da177e4 LT	443	case CX88_BOARD_HAUPPAUGE_DVB_T1:
fb56cb65 ST	444	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
fb56cb65 ST	445	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
30367bfd	446	case CX88_BOARD_HAUPPAUGE_HVR1100:
76dc82ab	447	case CX88_BOARD_HAUPPAUGE_HVR3000:
e52e98a7 MCC	448	ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
	449	ir_dprintk("biphase decoded: %x\n", ircode);
	450	if ((ircode & 0xfffff000) != 0x3000)
1da177e4	451	break;
b7df3910	452	ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode);
1da177e4 LT	453	ir->release = jiffies + msecs_to_jiffies(120);
	454	break;
	455	}
	456
	457	ir->scount = 0;
	458	return;
	459	}
	460
	461	/* ---------------------------------------------------------------------- */
	462
	463	MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
	464	MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
	465	MODULE_LICENSE("GPL");
1da177e4 LT	466	/*
	467	* Local variables:
	468	* c-basic-offset: 8
	469	* End:
	470	*/