[deliverable/linux.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 "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;
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->boardnr) {
	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->boardnr == 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));
}

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 |= PCI_INT_IR_SMPINT;
		cx_write(MO_DDS_IO, 0xa80a80);	/* 4 kHz sample rate */
		cx_write(MO_DDSCFG_IO, 0x5);	/* enable */
	}
}

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

	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->boardnr) {
	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:
	case CX88_BOARD_HAUPPAUGE_HVR4000:
	case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
		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_PROLINK_PV_8000GT:
	case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
		ir_codes = ir_codes_pixelview_new;
		ir->gpio_addr = MO_GP1_IO;
		ir->mask_keycode = 0x3f;
		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;
	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
		ir_codes = ir_codes_pinnacle_pctv_hd;
		ir_type = IR_TYPE_RC5;
		ir->sampling = 1;
		break;
	case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
		ir_codes = ir_codes_powercolor_real_angel;
		ir->gpio_addr = MO_GP2_IO;
		ir->mask_keycode = 0x7e;
		ir->polling = 100; /* ms */
		break;
	}

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

	/* init input device */
	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", 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, start, range, toggle, dev, code;

	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->boardnr) {
	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:
	case CX88_BOARD_HAUPPAUGE_HVR4000:
	case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
		ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
		ir_dprintk("biphase decoded: %x\n", ircode);
		/*
		 * RC5 has an extension bit which adds a new range
		 * of available codes, this is detected here. Also
		 * hauppauge remotes (black/silver) always use
		 * specific device ids. If we do not filter the
		 * device ids then messages destined for devices
		 * such as TVs (id=0) will get through to the
		 * device causing mis-fired events.
		 */
		/* split rc5 data block ... */
		start = (ircode & 0x2000) >> 13;
		range = (ircode & 0x1000) >> 12;
		toggle= (ircode & 0x0800) >> 11;
		dev   = (ircode & 0x07c0) >> 6;
		code  = (ircode & 0x003f) | ((range << 6) ^ 0x0040);
		if( start != 1)
			/* no key pressed */
			break;
		if ( dev != 0x1e && dev != 0x1f )
			/* not a hauppauge remote */
			break;
		ir_input_keydown(ir->input, &ir->ir, code, ircode);
		ir->release = jiffies + msecs_to_jiffies(120);
		break;
	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
		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>
1da177e4	30
1da177e4	31	#include "cx88.h"
d21838dd	32	#include <media/ir-common.h>
1da177e4 LT	33
	34	/* ---------------------------------------------------------------------- */
	35
1da177e4	36	struct cx88_IR {
41ef7c1e	37	struct cx88_core *core;
b7df3910	38	struct input_dev *input;
41ef7c1e MCC	39	struct ir_input_state ir;
	40	char name[32];
	41	char phys[32];
1da177e4 LT	42
1da177e4 LT	43	/* sample from gpio pin 16 */
fc40b261	44	u32 sampling;
41ef7c1e MCC	45	u32 samples[16];
	46	int scount;
	47	unsigned long release;
1da177e4 LT	48
1da177e4 LT	49	/* poll external decoder */
41ef7c1e MCC	50	int polling;
	51	struct work_struct work;
	52	struct timer_list timer;
	53	u32 gpio_addr;
	54	u32 last_gpio;
	55	u32 mask_keycode;
	56	u32 mask_keydown;
	57	u32 mask_keyup;
1da177e4 LT	58	};
1da177e4 LT	59
ff699e6b	60	static int ir_debug;
41ef7c1e	61	module_param(ir_debug, int, 0644); /* debug level [IR] */
1da177e4 LT	62	MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
	63
	64	#define ir_dprintk(fmt, arg...) if (ir_debug) \
e52e98a7	65	printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
1da177e4 LT	66
	67	/* ---------------------------------------------------------------------- */
	68
	69	static void cx88_ir_handle_key(struct cx88_IR *ir)
	70	{
	71	struct cx88_core *core = ir->core;
680543c5	72	u32 gpio, data, auxgpio;
1da177e4 LT	73
	74	/* read gpio value */
	75	gpio = cx_read(ir->gpio_addr);
6a59d64c	76	switch (core->boardnr) {
829ea964	77	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
680543c5 RC	78	/* This board apparently uses a combination of 2 GPIO
	79	to represent the keys. Additionally, the second GPIO
	80	can be used for parity.
	81
	82	Example:
	83
	84	for key "5"
	85	gpio = 0x758, auxgpio = 0xe5 or 0xf5
	86	for key "Power"
	87	gpio = 0x758, auxgpio = 0xed or 0xfd
	88	*/
	89
	90	auxgpio = cx_read(MO_GP1_IO);
	91	/* Take out the parity part */
a62c61d3	92	gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
829ea964 MK	93	break;
829ea964 MK	94	case CX88_BOARD_WINFAST_DTV1000:
e7d11ecb EP	95	gpio = (gpio & 0x6ff) \| ((cx_read(MO_GP1_IO) << 8) & 0x900);
e7d11ecb EP	96	auxgpio = gpio;
829ea964 MK	97	break;
829ea964 MK	98	default:
680543c5	99	auxgpio = gpio;
829ea964	100	}
1da177e4	101	if (ir->polling) {
680543c5	102	if (ir->last_gpio == auxgpio)
1da177e4	103	return;
680543c5	104	ir->last_gpio = auxgpio;
1da177e4 LT	105	}
	106
	107	/* extract data */
	108	data = ir_extract_bits(gpio, ir->mask_keycode);
	109	ir_dprintk("irq gpio=0x%x code=%d \| %s%s%s\n",
41ef7c1e MCC	110	gpio, data,
	111	ir->polling ? "poll" : "irq",
	112	(gpio & ir->mask_keydown) ? " down" : "",
	113	(gpio & ir->mask_keyup) ? " up" : "");
1da177e4	114
6a59d64c	115	if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
d1009bd7 PN	116	u32 gpio_key = cx_read(MO_GP0_IO);
	117
	118	data = (data << 4) \| ((gpio_key & 0xf0) >> 4);
	119
	120	ir_input_keydown(ir->input, &ir->ir, data, data);
	121	ir_input_nokey(ir->input, &ir->ir);
	122
	123	} else if (ir->mask_keydown) {
1da177e4 LT	124	/* bit set on keydown */
1da177e4 LT	125	if (gpio & ir->mask_keydown) {
b7df3910	126	ir_input_keydown(ir->input, &ir->ir, data, data);
1da177e4	127	} else {
b7df3910	128	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	129	}
	130
	131	} else if (ir->mask_keyup) {
	132	/* bit cleared on keydown */
	133	if (0 == (gpio & ir->mask_keyup)) {
b7df3910	134	ir_input_keydown(ir->input, &ir->ir, data, data);
1da177e4	135	} else {
b7df3910	136	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	137	}
	138
	139	} else {
	140	/* can't distinguish keydown/up :-/ */
b7df3910 DT	141	ir_input_keydown(ir->input, &ir->ir, data, data);
b7df3910 DT	142	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	143	}
	144	}
	145
	146	static void ir_timer(unsigned long data)
	147	{
41ef7c1e	148	struct cx88_IR ir = (struct cx88_IR )data;
1da177e4 LT	149
	150	schedule_work(&ir->work);
	151	}
	152
c4028958	153	static void cx88_ir_work(struct work_struct *work)
1da177e4	154	{
c4028958	155	struct cx88_IR *ir = container_of(work, struct cx88_IR, work);
1da177e4 LT	156
1da177e4 LT	157	cx88_ir_handle_key(ir);
749823a0	158	mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
1da177e4 LT	159	}
1da177e4 LT	160
13595a51	161	void cx88_ir_start(struct cx88_core core, struct cx88_IR ir)
b07b4783 DT	162	{
b07b4783 DT	163	if (ir->polling) {
749823a0	164	setup_timer(&ir->timer, ir_timer, (unsigned long)ir);
67952e8c	165	INIT_WORK(&ir->work, cx88_ir_work);
b07b4783 DT	166	schedule_work(&ir->work);
	167	}
	168	if (ir->sampling) {
8ddac9ee	169	core->pci_irqmask \|= PCI_INT_IR_SMPINT;
b07b4783 DT	170	cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */
	171	cx_write(MO_DDSCFG_IO, 0x5); /* enable */
	172	}
	173	}
	174
13595a51	175	void cx88_ir_stop(struct cx88_core core, struct cx88_IR ir)
b07b4783 DT	176	{
	177	if (ir->sampling) {
	178	cx_write(MO_DDSCFG_IO, 0x0);
8ddac9ee	179	core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
b07b4783 DT	180	}
	181
	182	if (ir->polling) {
	183	del_timer_sync(&ir->timer);
	184	flush_scheduled_work();
	185	}
	186	}
	187
1da177e4 LT	188	/* ---------------------------------------------------------------------- */
	189
	190	int cx88_ir_init(struct cx88_core core, struct pci_dev pci)
	191	{
	192	struct cx88_IR *ir;
b7df3910	193	struct input_dev *input_dev;
1da177e4 LT	194	IR_KEYTAB_TYPE *ir_codes = NULL;
1da177e4 LT	195	int ir_type = IR_TYPE_OTHER;
b07b4783	196	int err = -ENOMEM;
1da177e4	197
b7df3910 DT	198	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
b7df3910 DT	199	input_dev = input_allocate_device();
b07b4783 DT	200	if (!ir \|\| !input_dev)
b07b4783 DT	201	goto err_out_free;
b7df3910 DT	202
b7df3910 DT	203	ir->input = input_dev;
1da177e4 LT	204
1da177e4 LT	205	/* detect & configure */
6a59d64c	206	switch (core->boardnr) {
1da177e4	207	case CX88_BOARD_DNTV_LIVE_DVB_T:
b45009b0	208	case CX88_BOARD_KWORLD_DVB_T:
28ecc449	209	case CX88_BOARD_KWORLD_DVB_T_CX22702:
41ef7c1e MCC	210	ir_codes = ir_codes_dntv_live_dvb_t;
41ef7c1e MCC	211	ir->gpio_addr = MO_GP1_IO;
1da177e4	212	ir->mask_keycode = 0x1f;
41ef7c1e MCC	213	ir->mask_keyup = 0x60;
41ef7c1e MCC	214	ir->polling = 50; /* ms */
1da177e4	215	break;
e52e98a7 MCC	216	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
	217	ir_codes = ir_codes_cinergy_1400;
	218	ir_type = IR_TYPE_PD;
fc40b261	219	ir->sampling = 0xeb04; /* address */
e52e98a7	220	break;
1da177e4 LT	221	case CX88_BOARD_HAUPPAUGE:
1da177e4 LT	222	case CX88_BOARD_HAUPPAUGE_DVB_T1:
fb56cb65 ST	223	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
fb56cb65 ST	224	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
611900c1	225	case CX88_BOARD_HAUPPAUGE_HVR1100:
76dc82ab	226	case CX88_BOARD_HAUPPAUGE_HVR3000:
5bd1b663 ST	227	case CX88_BOARD_HAUPPAUGE_HVR4000:
5bd1b663 ST	228	case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
41ef7c1e MCC	229	ir_codes = ir_codes_hauppauge_new;
	230	ir_type = IR_TYPE_RC5;
	231	ir->sampling = 1;
1da177e4	232	break;
2de873e6	233	case CX88_BOARD_WINFAST_DTV2000H:
41ef7c1e MCC	234	ir_codes = ir_codes_winfast;
41ef7c1e MCC	235	ir->gpio_addr = MO_GP0_IO;
1da177e4	236	ir->mask_keycode = 0x8f8;
41ef7c1e	237	ir->mask_keyup = 0x100;
2de873e6	238	ir->polling = 50; /* ms */
1da177e4	239	break;
ff97d93d	240	case CX88_BOARD_WINFAST2000XP_EXPERT:
e7d11ecb	241	case CX88_BOARD_WINFAST_DTV1000:
ff97d93d HP	242	ir_codes = ir_codes_winfast;
	243	ir->gpio_addr = MO_GP0_IO;
	244	ir->mask_keycode = 0x8f8;
	245	ir->mask_keyup = 0x100;
	246	ir->polling = 1; /* ms */
	247	break;
1da177e4	248	case CX88_BOARD_IODATA_GVBCTV7E:
41ef7c1e MCC	249	ir_codes = ir_codes_iodata_bctv7e;
41ef7c1e MCC	250	ir->gpio_addr = MO_GP0_IO;
1da177e4 LT	251	ir->mask_keycode = 0xfd;
1da177e4 LT	252	ir->mask_keydown = 0x02;
41ef7c1e	253	ir->polling = 5; /* ms */
1da177e4	254	break;
ff97d93d	255	case CX88_BOARD_PROLINK_PLAYTVPVR:
239df2e2	256	case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
41ef7c1e MCC	257	ir_codes = ir_codes_pixelview;
41ef7c1e MCC	258	ir->gpio_addr = MO_GP1_IO;
239df2e2	259	ir->mask_keycode = 0x1f;
41ef7c1e MCC	260	ir->mask_keyup = 0x80;
41ef7c1e MCC	261	ir->polling = 1; /* ms */
239df2e2	262	break;
7f0dd179	263	case CX88_BOARD_PROLINK_PV_8000GT:
a31d2bb7	264	case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
7f0dd179 MCC	265	ir_codes = ir_codes_pixelview_new;
	266	ir->gpio_addr = MO_GP1_IO;
	267	ir->mask_keycode = 0x3f;
	268	ir->mask_keyup = 0x80;
	269	ir->polling = 1; /* ms */
	270	break;
b639f9d2 NS	271	case CX88_BOARD_KWORLD_LTV883:
	272	ir_codes = ir_codes_pixelview;
	273	ir->gpio_addr = MO_GP1_IO;
	274	ir->mask_keycode = 0x1f;
	275	ir->mask_keyup = 0x60;
	276	ir->polling = 1; /* ms */
	277	break;
a82decf6	278	case CX88_BOARD_ADSTECH_DVB_T_PCI:
41ef7c1e MCC	279	ir_codes = ir_codes_adstech_dvb_t_pci;
41ef7c1e MCC	280	ir->gpio_addr = MO_GP1_IO;
a82decf6	281	ir->mask_keycode = 0xbf;
41ef7c1e MCC	282	ir->mask_keyup = 0x40;
	283	ir->polling = 50; /* ms */
	284	break;
	285	case CX88_BOARD_MSI_TVANYWHERE_MASTER:
	286	ir_codes = ir_codes_msi_tvanywhere;
	287	ir->gpio_addr = MO_GP1_IO;
	288	ir->mask_keycode = 0x1f;
	289	ir->mask_keyup = 0x40;
	290	ir->polling = 1; /* ms */
a82decf6	291	break;
899ad11b	292	case CX88_BOARD_AVERTV_303:
565f4949	293	case CX88_BOARD_AVERTV_STUDIO_303:
899ad11b GG	294	ir_codes = ir_codes_avertv_303;
	295	ir->gpio_addr = MO_GP2_IO;
	296	ir->mask_keycode = 0xfb;
	297	ir->mask_keydown = 0x02;
	298	ir->polling = 50; /* ms */
	299	break;
fc40b261 CP	300	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
	301	ir_codes = ir_codes_dntv_live_dvbt_pro;
	302	ir_type = IR_TYPE_PD;
	303	ir->sampling = 0xff00; /* address */
	304	break;
d1009bd7 PN	305	case CX88_BOARD_NORWOOD_MICRO:
	306	ir_codes = ir_codes_norwood;
	307	ir->gpio_addr = MO_GP1_IO;
	308	ir->mask_keycode = 0x0e;
	309	ir->mask_keyup = 0x80;
	310	ir->polling = 50; /* ms */
	311	break;
be4f4519	312	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
680543c5 RC	313	ir_codes = ir_codes_npgtech;
	314	ir->gpio_addr = MO_GP0_IO;
	315	ir->mask_keycode = 0xfa;
	316	ir->polling = 50; /* ms */
	317	break;
9121106a ST	318	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
	319	ir_codes = ir_codes_pinnacle_pctv_hd;
	320	ir_type = IR_TYPE_RC5;
	321	ir->sampling = 1;
	322	break;
ba928034 DF	323	case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
	324	ir_codes = ir_codes_powercolor_real_angel;
	325	ir->gpio_addr = MO_GP2_IO;
	326	ir->mask_keycode = 0x7e;
	327	ir->polling = 100; /* ms */
	328	break;
1da177e4	329	}
b45009b0	330
1da177e4	331	if (NULL == ir_codes) {
b07b4783 DT	332	err = -ENODEV;
b07b4783 DT	333	goto err_out_free;
1da177e4 LT	334	}
	335
	336	/* init input device */
6a59d64c	337	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
41ef7c1e	338	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
1da177e4	339
b7df3910 DT	340	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
	341	input_dev->name = ir->name;
	342	input_dev->phys = ir->phys;
	343	input_dev->id.bustype = BUS_PCI;
	344	input_dev->id.version = 1;
1da177e4	345	if (pci->subsystem_vendor) {
b7df3910 DT	346	input_dev->id.vendor = pci->subsystem_vendor;
b7df3910 DT	347	input_dev->id.product = pci->subsystem_device;
1da177e4	348	} else {
b7df3910 DT	349	input_dev->id.vendor = pci->vendor;
b7df3910 DT	350	input_dev->id.product = pci->device;
1da177e4	351	}
2c8a3a33	352	input_dev->dev.parent = &pci->dev;
1da177e4 LT	353	/* record handles to ourself */
	354	ir->core = core;
	355	core->ir = ir;
	356
b07b4783	357	cx88_ir_start(core, ir);
1da177e4 LT	358
1da177e4 LT	359	/* all done */
b07b4783 DT	360	err = input_register_device(ir->input);
	361	if (err)
	362	goto err_out_stop;
1da177e4 LT	363
1da177e4 LT	364	return 0;
b07b4783 DT	365
	366	err_out_stop:
	367	cx88_ir_stop(core, ir);
	368	core->ir = NULL;
	369	err_out_free:
	370	input_free_device(input_dev);
	371	kfree(ir);
	372	return err;
1da177e4 LT	373	}
	374
	375	int cx88_ir_fini(struct cx88_core *core)
	376	{
	377	struct cx88_IR *ir = core->ir;
	378
	379	/* skip detach on non attached boards */
	380	if (NULL == ir)
	381	return 0;
	382
b07b4783	383	cx88_ir_stop(core, ir);
b7df3910	384	input_unregister_device(ir->input);
1da177e4 LT	385	kfree(ir);
	386
	387	/* done */
	388	core->ir = NULL;
	389	return 0;
	390	}
	391
	392	/* ---------------------------------------------------------------------- */
	393
	394	void cx88_ir_irq(struct cx88_core *core)
	395	{
	396	struct cx88_IR *ir = core->ir;
e52e98a7	397	u32 samples, ircode;
34c08029	398	int i, start, range, toggle, dev, code;
1da177e4 LT	399
	400	if (NULL == ir)
	401	return;
	402	if (!ir->sampling)
	403	return;
	404
	405	samples = cx_read(MO_SAMPLE_IO);
41ef7c1e	406	if (0 != samples && 0xffffffff != samples) {
1da177e4 LT	407	/* record sample data */
	408	if (ir->scount < ARRAY_SIZE(ir->samples))
	409	ir->samples[ir->scount++] = samples;
	410	return;
	411	}
	412	if (!ir->scount) {
	413	/* nothing to sample */
41ef7c1e	414	if (ir->ir.keypressed && time_after(jiffies, ir->release))
b7df3910	415	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	416	return;
	417	}
	418
	419	/* have a complete sample */
	420	if (ir->scount < ARRAY_SIZE(ir->samples))
	421	ir->samples[ir->scount++] = samples;
	422	for (i = 0; i < ir->scount; i++)
	423	ir->samples[i] = ~ir->samples[i];
	424	if (ir_debug)
41ef7c1e	425	ir_dump_samples(ir->samples, ir->scount);
1da177e4 LT	426
1da177e4 LT	427	/* decode it */
6a59d64c	428	switch (core->boardnr) {
e52e98a7	429	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
fc40b261	430	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
e52e98a7 MCC	431	ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
	432
	433	if (ircode == 0xffffffff) { /* decoding error */
	434	ir_dprintk("pulse distance decoding error\n");
	435	break;
	436	}
	437
	438	ir_dprintk("pulse distance decoded: %x\n", ircode);
	439
	440	if (ircode == 0) { /* key still pressed */
	441	ir_dprintk("pulse distance decoded repeat code\n");
	442	ir->release = jiffies + msecs_to_jiffies(120);
	443	break;
	444	}
	445
fc40b261	446	if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
e52e98a7	447	ir_dprintk("pulse distance decoded wrong address\n");
4ac97914	448	break;
e52e98a7 MCC	449	}
	450
	451	if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
	452	ir_dprintk("pulse distance decoded wrong check sum\n");
	453	break;
	454	}
	455
	456	ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
	457
b7df3910	458	ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
e52e98a7 MCC	459	ir->release = jiffies + msecs_to_jiffies(120);
e52e98a7 MCC	460	break;
1da177e4 LT	461	case CX88_BOARD_HAUPPAUGE:
1da177e4 LT	462	case CX88_BOARD_HAUPPAUGE_DVB_T1:
fb56cb65 ST	463	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
fb56cb65 ST	464	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
30367bfd	465	case CX88_BOARD_HAUPPAUGE_HVR1100:
76dc82ab	466	case CX88_BOARD_HAUPPAUGE_HVR3000:
5bd1b663 ST	467	case CX88_BOARD_HAUPPAUGE_HVR4000:
5bd1b663 ST	468	case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
34c08029 DB	469	ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
	470	ir_dprintk("biphase decoded: %x\n", ircode);
	471	/*
	472	* RC5 has an extension bit which adds a new range
	473	* of available codes, this is detected here. Also
	474	* hauppauge remotes (black/silver) always use
	475	* specific device ids. If we do not filter the
	476	* device ids then messages destined for devices
	477	* such as TVs (id=0) will get through to the
	478	* device causing mis-fired events.
	479	*/
	480	/* split rc5 data block ... */
	481	start = (ircode & 0x2000) >> 13;
	482	range = (ircode & 0x1000) >> 12;
	483	toggle= (ircode & 0x0800) >> 11;
	484	dev = (ircode & 0x07c0) >> 6;
	485	code = (ircode & 0x003f) \| ((range << 6) ^ 0x0040);
	486	if( start != 1)
	487	/* no key pressed */
	488	break;
	489	if ( dev != 0x1e && dev != 0x1f )
	490	/* not a hauppauge remote */
	491	break;
	492	ir_input_keydown(ir->input, &ir->ir, code, ircode);
	493	ir->release = jiffies + msecs_to_jiffies(120);
	494	break;
	495	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
e52e98a7 MCC	496	ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
	497	ir_dprintk("biphase decoded: %x\n", ircode);
	498	if ((ircode & 0xfffff000) != 0x3000)
1da177e4	499	break;
b7df3910	500	ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode);
1da177e4 LT	501	ir->release = jiffies + msecs_to_jiffies(120);
	502	break;
	503	}
	504
	505	ir->scount = 0;
	506	return;
	507	}
	508
	509	/* ---------------------------------------------------------------------- */
	510
	511	MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
	512	MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
	513	MODULE_LICENSE("GPL");
1da177e4 LT	514	/*
	515	* Local variables:
	516	* c-basic-offset: 8
	517	* End:
	518	*/