[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 delayed_work work;
	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 cx88_ir_work(struct work_struct *work)
{
	struct cx88_IR *ir = container_of(work, struct cx88_IR, work.work);

	cx88_ir_handle_key(ir);
	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
}

void cx88_ir_start(struct cx88_core *core, struct cx88_IR *ir)
{
	if (ir->polling) {
		INIT_DELAYED_WORK(&ir->work, cx88_ir_work);
		schedule_delayed_work(&ir->work, 0);
	}
	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)
		cancel_delayed_work_sync(&ir->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:
	case CX88_BOARD_PCHDTV_HD3000:
	case CX88_BOARD_PCHDTV_HD5500:
		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:
	case CX88_BOARD_PCHDTV_HD3000:
	case CX88_BOARD_PCHDTV_HD5500:
		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	50	int polling;
569b7ec7	51	struct delayed_work work;
41ef7c1e MCC	52	u32 gpio_addr;
	53	u32 last_gpio;
	54	u32 mask_keycode;
	55	u32 mask_keydown;
	56	u32 mask_keyup;
1da177e4 LT	57	};
1da177e4 LT	58
ff699e6b	59	static int ir_debug;
41ef7c1e	60	module_param(ir_debug, int, 0644); /* debug level [IR] */
1da177e4 LT	61	MODULE_PARM_DESC(ir_debug, "enable debug messages [IR]");
	62
	63	#define ir_dprintk(fmt, arg...) if (ir_debug) \
e52e98a7	64	printk(KERN_DEBUG "%s IR: " fmt , ir->core->name , ##arg)
1da177e4 LT	65
	66	/* ---------------------------------------------------------------------- */
	67
	68	static void cx88_ir_handle_key(struct cx88_IR *ir)
	69	{
	70	struct cx88_core *core = ir->core;
680543c5	71	u32 gpio, data, auxgpio;
1da177e4 LT	72
	73	/* read gpio value */
	74	gpio = cx_read(ir->gpio_addr);
6a59d64c	75	switch (core->boardnr) {
829ea964	76	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
680543c5 RC	77	/* This board apparently uses a combination of 2 GPIO
	78	to represent the keys. Additionally, the second GPIO
	79	can be used for parity.
	80
	81	Example:
	82
	83	for key "5"
	84	gpio = 0x758, auxgpio = 0xe5 or 0xf5
	85	for key "Power"
	86	gpio = 0x758, auxgpio = 0xed or 0xfd
	87	*/
	88
	89	auxgpio = cx_read(MO_GP1_IO);
	90	/* Take out the parity part */
a62c61d3	91	gpio=(gpio & 0x7fd) + (auxgpio & 0xef);
829ea964 MK	92	break;
829ea964 MK	93	case CX88_BOARD_WINFAST_DTV1000:
e7d11ecb EP	94	gpio = (gpio & 0x6ff) \| ((cx_read(MO_GP1_IO) << 8) & 0x900);
e7d11ecb EP	95	auxgpio = gpio;
829ea964 MK	96	break;
829ea964 MK	97	default:
680543c5	98	auxgpio = gpio;
829ea964	99	}
1da177e4	100	if (ir->polling) {
680543c5	101	if (ir->last_gpio == auxgpio)
1da177e4	102	return;
680543c5	103	ir->last_gpio = auxgpio;
1da177e4 LT	104	}
	105
	106	/* extract data */
	107	data = ir_extract_bits(gpio, ir->mask_keycode);
	108	ir_dprintk("irq gpio=0x%x code=%d \| %s%s%s\n",
41ef7c1e MCC	109	gpio, data,
	110	ir->polling ? "poll" : "irq",
	111	(gpio & ir->mask_keydown) ? " down" : "",
	112	(gpio & ir->mask_keyup) ? " up" : "");
1da177e4	113
6a59d64c	114	if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
d1009bd7 PN	115	u32 gpio_key = cx_read(MO_GP0_IO);
	116
	117	data = (data << 4) \| ((gpio_key & 0xf0) >> 4);
	118
	119	ir_input_keydown(ir->input, &ir->ir, data, data);
	120	ir_input_nokey(ir->input, &ir->ir);
	121
	122	} else if (ir->mask_keydown) {
1da177e4 LT	123	/* bit set on keydown */
1da177e4 LT	124	if (gpio & ir->mask_keydown) {
b7df3910	125	ir_input_keydown(ir->input, &ir->ir, data, data);
1da177e4	126	} else {
b7df3910	127	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	128	}
	129
	130	} else if (ir->mask_keyup) {
	131	/* bit cleared on keydown */
	132	if (0 == (gpio & ir->mask_keyup)) {
b7df3910	133	ir_input_keydown(ir->input, &ir->ir, data, data);
1da177e4	134	} else {
b7df3910	135	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	136	}
	137
	138	} else {
	139	/* can't distinguish keydown/up :-/ */
b7df3910 DT	140	ir_input_keydown(ir->input, &ir->ir, data, data);
b7df3910 DT	141	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	142	}
	143	}
	144
c4028958	145	static void cx88_ir_work(struct work_struct *work)
1da177e4	146	{
569b7ec7	147	struct cx88_IR *ir = container_of(work, struct cx88_IR, work.work);
1da177e4 LT	148
1da177e4 LT	149	cx88_ir_handle_key(ir);
569b7ec7	150	schedule_delayed_work(&ir->work, msecs_to_jiffies(ir->polling));
1da177e4 LT	151	}
1da177e4 LT	152
13595a51	153	void cx88_ir_start(struct cx88_core core, struct cx88_IR ir)
b07b4783 DT	154	{
b07b4783 DT	155	if (ir->polling) {
569b7ec7 JD	156	INIT_DELAYED_WORK(&ir->work, cx88_ir_work);
569b7ec7 JD	157	schedule_delayed_work(&ir->work, 0);
b07b4783 DT	158	}
b07b4783 DT	159	if (ir->sampling) {
8ddac9ee	160	core->pci_irqmask \|= PCI_INT_IR_SMPINT;
b07b4783 DT	161	cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */
	162	cx_write(MO_DDSCFG_IO, 0x5); /* enable */
	163	}
	164	}
	165
13595a51	166	void cx88_ir_stop(struct cx88_core core, struct cx88_IR ir)
b07b4783 DT	167	{
	168	if (ir->sampling) {
	169	cx_write(MO_DDSCFG_IO, 0x0);
8ddac9ee	170	core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
b07b4783 DT	171	}
b07b4783 DT	172
569b7ec7 JD	173	if (ir->polling)
569b7ec7 JD	174	cancel_delayed_work_sync(&ir->work);
b07b4783 DT	175	}
b07b4783 DT	176
1da177e4 LT	177	/* ---------------------------------------------------------------------- */
	178
	179	int cx88_ir_init(struct cx88_core core, struct pci_dev pci)
	180	{
	181	struct cx88_IR *ir;
b7df3910	182	struct input_dev *input_dev;
1da177e4 LT	183	IR_KEYTAB_TYPE *ir_codes = NULL;
1da177e4 LT	184	int ir_type = IR_TYPE_OTHER;
b07b4783	185	int err = -ENOMEM;
1da177e4	186
b7df3910 DT	187	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
b7df3910 DT	188	input_dev = input_allocate_device();
b07b4783 DT	189	if (!ir \|\| !input_dev)
b07b4783 DT	190	goto err_out_free;
b7df3910 DT	191
b7df3910 DT	192	ir->input = input_dev;
1da177e4 LT	193
1da177e4 LT	194	/* detect & configure */
6a59d64c	195	switch (core->boardnr) {
1da177e4	196	case CX88_BOARD_DNTV_LIVE_DVB_T:
b45009b0	197	case CX88_BOARD_KWORLD_DVB_T:
28ecc449	198	case CX88_BOARD_KWORLD_DVB_T_CX22702:
41ef7c1e MCC	199	ir_codes = ir_codes_dntv_live_dvb_t;
41ef7c1e MCC	200	ir->gpio_addr = MO_GP1_IO;
1da177e4	201	ir->mask_keycode = 0x1f;
41ef7c1e MCC	202	ir->mask_keyup = 0x60;
41ef7c1e MCC	203	ir->polling = 50; /* ms */
1da177e4	204	break;
e52e98a7 MCC	205	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
	206	ir_codes = ir_codes_cinergy_1400;
	207	ir_type = IR_TYPE_PD;
fc40b261	208	ir->sampling = 0xeb04; /* address */
e52e98a7	209	break;
1da177e4 LT	210	case CX88_BOARD_HAUPPAUGE:
1da177e4 LT	211	case CX88_BOARD_HAUPPAUGE_DVB_T1:
fb56cb65 ST	212	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
fb56cb65 ST	213	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
611900c1	214	case CX88_BOARD_HAUPPAUGE_HVR1100:
76dc82ab	215	case CX88_BOARD_HAUPPAUGE_HVR3000:
5bd1b663 ST	216	case CX88_BOARD_HAUPPAUGE_HVR4000:
5bd1b663 ST	217	case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
f1735bb2 EB	218	case CX88_BOARD_PCHDTV_HD3000:
f1735bb2 EB	219	case CX88_BOARD_PCHDTV_HD5500:
41ef7c1e MCC	220	ir_codes = ir_codes_hauppauge_new;
	221	ir_type = IR_TYPE_RC5;
	222	ir->sampling = 1;
1da177e4	223	break;
2de873e6	224	case CX88_BOARD_WINFAST_DTV2000H:
41ef7c1e MCC	225	ir_codes = ir_codes_winfast;
41ef7c1e MCC	226	ir->gpio_addr = MO_GP0_IO;
1da177e4	227	ir->mask_keycode = 0x8f8;
41ef7c1e	228	ir->mask_keyup = 0x100;
2de873e6	229	ir->polling = 50; /* ms */
1da177e4	230	break;
ff97d93d	231	case CX88_BOARD_WINFAST2000XP_EXPERT:
e7d11ecb	232	case CX88_BOARD_WINFAST_DTV1000:
ff97d93d HP	233	ir_codes = ir_codes_winfast;
	234	ir->gpio_addr = MO_GP0_IO;
	235	ir->mask_keycode = 0x8f8;
	236	ir->mask_keyup = 0x100;
	237	ir->polling = 1; /* ms */
	238	break;
1da177e4	239	case CX88_BOARD_IODATA_GVBCTV7E:
41ef7c1e MCC	240	ir_codes = ir_codes_iodata_bctv7e;
41ef7c1e MCC	241	ir->gpio_addr = MO_GP0_IO;
1da177e4 LT	242	ir->mask_keycode = 0xfd;
1da177e4 LT	243	ir->mask_keydown = 0x02;
41ef7c1e	244	ir->polling = 5; /* ms */
1da177e4	245	break;
ff97d93d	246	case CX88_BOARD_PROLINK_PLAYTVPVR:
239df2e2	247	case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
41ef7c1e MCC	248	ir_codes = ir_codes_pixelview;
41ef7c1e MCC	249	ir->gpio_addr = MO_GP1_IO;
239df2e2	250	ir->mask_keycode = 0x1f;
41ef7c1e MCC	251	ir->mask_keyup = 0x80;
41ef7c1e MCC	252	ir->polling = 1; /* ms */
239df2e2	253	break;
7f0dd179	254	case CX88_BOARD_PROLINK_PV_8000GT:
a31d2bb7	255	case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
7f0dd179 MCC	256	ir_codes = ir_codes_pixelview_new;
	257	ir->gpio_addr = MO_GP1_IO;
	258	ir->mask_keycode = 0x3f;
	259	ir->mask_keyup = 0x80;
	260	ir->polling = 1; /* ms */
	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;
9121106a ST	309	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
	310	ir_codes = ir_codes_pinnacle_pctv_hd;
	311	ir_type = IR_TYPE_RC5;
	312	ir->sampling = 1;
	313	break;
ba928034 DF	314	case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
	315	ir_codes = ir_codes_powercolor_real_angel;
	316	ir->gpio_addr = MO_GP2_IO;
	317	ir->mask_keycode = 0x7e;
	318	ir->polling = 100; /* ms */
	319	break;
1da177e4	320	}
b45009b0	321
1da177e4	322	if (NULL == ir_codes) {
b07b4783 DT	323	err = -ENODEV;
b07b4783 DT	324	goto err_out_free;
1da177e4 LT	325	}
	326
	327	/* init input device */
6a59d64c	328	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
41ef7c1e	329	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
1da177e4	330
b7df3910 DT	331	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
	332	input_dev->name = ir->name;
	333	input_dev->phys = ir->phys;
	334	input_dev->id.bustype = BUS_PCI;
	335	input_dev->id.version = 1;
1da177e4	336	if (pci->subsystem_vendor) {
b7df3910 DT	337	input_dev->id.vendor = pci->subsystem_vendor;
b7df3910 DT	338	input_dev->id.product = pci->subsystem_device;
1da177e4	339	} else {
b7df3910 DT	340	input_dev->id.vendor = pci->vendor;
b7df3910 DT	341	input_dev->id.product = pci->device;
1da177e4	342	}
2c8a3a33	343	input_dev->dev.parent = &pci->dev;
1da177e4 LT	344	/* record handles to ourself */
	345	ir->core = core;
	346	core->ir = ir;
	347
b07b4783	348	cx88_ir_start(core, ir);
1da177e4 LT	349
1da177e4 LT	350	/* all done */
b07b4783 DT	351	err = input_register_device(ir->input);
	352	if (err)
	353	goto err_out_stop;
1da177e4 LT	354
1da177e4 LT	355	return 0;
b07b4783 DT	356
	357	err_out_stop:
	358	cx88_ir_stop(core, ir);
	359	core->ir = NULL;
	360	err_out_free:
	361	input_free_device(input_dev);
	362	kfree(ir);
	363	return err;
1da177e4 LT	364	}
	365
	366	int cx88_ir_fini(struct cx88_core *core)
	367	{
	368	struct cx88_IR *ir = core->ir;
	369
	370	/* skip detach on non attached boards */
	371	if (NULL == ir)
	372	return 0;
	373
b07b4783	374	cx88_ir_stop(core, ir);
b7df3910	375	input_unregister_device(ir->input);
1da177e4 LT	376	kfree(ir);
	377
	378	/* done */
	379	core->ir = NULL;
	380	return 0;
	381	}
	382
	383	/* ---------------------------------------------------------------------- */
	384
	385	void cx88_ir_irq(struct cx88_core *core)
	386	{
	387	struct cx88_IR *ir = core->ir;
e52e98a7	388	u32 samples, ircode;
34c08029	389	int i, start, range, toggle, dev, code;
1da177e4 LT	390
	391	if (NULL == ir)
	392	return;
	393	if (!ir->sampling)
	394	return;
	395
	396	samples = cx_read(MO_SAMPLE_IO);
41ef7c1e	397	if (0 != samples && 0xffffffff != samples) {
1da177e4 LT	398	/* record sample data */
	399	if (ir->scount < ARRAY_SIZE(ir->samples))
	400	ir->samples[ir->scount++] = samples;
	401	return;
	402	}
	403	if (!ir->scount) {
	404	/* nothing to sample */
41ef7c1e	405	if (ir->ir.keypressed && time_after(jiffies, ir->release))
b7df3910	406	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	407	return;
	408	}
	409
	410	/* have a complete sample */
	411	if (ir->scount < ARRAY_SIZE(ir->samples))
	412	ir->samples[ir->scount++] = samples;
	413	for (i = 0; i < ir->scount; i++)
	414	ir->samples[i] = ~ir->samples[i];
	415	if (ir_debug)
41ef7c1e	416	ir_dump_samples(ir->samples, ir->scount);
1da177e4 LT	417
1da177e4 LT	418	/* decode it */
6a59d64c	419	switch (core->boardnr) {
e52e98a7	420	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
fc40b261	421	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
e52e98a7 MCC	422	ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
	423
	424	if (ircode == 0xffffffff) { /* decoding error */
	425	ir_dprintk("pulse distance decoding error\n");
	426	break;
	427	}
	428
	429	ir_dprintk("pulse distance decoded: %x\n", ircode);
	430
	431	if (ircode == 0) { /* key still pressed */
	432	ir_dprintk("pulse distance decoded repeat code\n");
	433	ir->release = jiffies + msecs_to_jiffies(120);
	434	break;
	435	}
	436
fc40b261	437	if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
e52e98a7	438	ir_dprintk("pulse distance decoded wrong address\n");
4ac97914	439	break;
e52e98a7 MCC	440	}
	441
	442	if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
	443	ir_dprintk("pulse distance decoded wrong check sum\n");
	444	break;
	445	}
	446
	447	ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
	448
b7df3910	449	ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
e52e98a7 MCC	450	ir->release = jiffies + msecs_to_jiffies(120);
e52e98a7 MCC	451	break;
1da177e4 LT	452	case CX88_BOARD_HAUPPAUGE:
1da177e4 LT	453	case CX88_BOARD_HAUPPAUGE_DVB_T1:
fb56cb65 ST	454	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
fb56cb65 ST	455	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
30367bfd	456	case CX88_BOARD_HAUPPAUGE_HVR1100:
76dc82ab	457	case CX88_BOARD_HAUPPAUGE_HVR3000:
5bd1b663 ST	458	case CX88_BOARD_HAUPPAUGE_HVR4000:
5bd1b663 ST	459	case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
f1735bb2 EB	460	case CX88_BOARD_PCHDTV_HD3000:
f1735bb2 EB	461	case CX88_BOARD_PCHDTV_HD5500:
34c08029 DB	462	ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
	463	ir_dprintk("biphase decoded: %x\n", ircode);
	464	/*
	465	* RC5 has an extension bit which adds a new range
	466	* of available codes, this is detected here. Also
	467	* hauppauge remotes (black/silver) always use
	468	* specific device ids. If we do not filter the
	469	* device ids then messages destined for devices
	470	* such as TVs (id=0) will get through to the
	471	* device causing mis-fired events.
	472	*/
	473	/* split rc5 data block ... */
	474	start = (ircode & 0x2000) >> 13;
	475	range = (ircode & 0x1000) >> 12;
	476	toggle= (ircode & 0x0800) >> 11;
	477	dev = (ircode & 0x07c0) >> 6;
	478	code = (ircode & 0x003f) \| ((range << 6) ^ 0x0040);
	479	if( start != 1)
	480	/* no key pressed */
	481	break;
	482	if ( dev != 0x1e && dev != 0x1f )
	483	/* not a hauppauge remote */
	484	break;
	485	ir_input_keydown(ir->input, &ir->ir, code, ircode);
	486	ir->release = jiffies + msecs_to_jiffies(120);
	487	break;
	488	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
e52e98a7 MCC	489	ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
	490	ir_dprintk("biphase decoded: %x\n", ircode);
	491	if ((ircode & 0xfffff000) != 0x3000)
1da177e4	492	break;
b7df3910	493	ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode);
1da177e4 LT	494	ir->release = jiffies + msecs_to_jiffies(120);
	495	break;
	496	}
	497
	498	ir->scount = 0;
	499	return;
	500	}
	501
	502	/* ---------------------------------------------------------------------- */
	503
	504	MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
	505	MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
	506	MODULE_LICENSE("GPL");
1da177e4 LT	507	/*
	508	* Local variables:
	509	* c-basic-offset: 8
	510	* End:
	511	*/