[mirror_ubuntu-hirsute-kernel.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;

	/* read gpio value */
	gpio = cx_read(ir->gpio_addr);
	if (ir->polling) {
		if (ir->last_gpio == gpio)
			return;
		ir->last_gpio = gpio;
	}

	/* 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->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(void *data)
{
	struct cx88_IR *ir = data;
	unsigned long timeout;

	cx88_ir_handle_key(ir);
	timeout = jiffies + (ir->polling * HZ / 1000);
	mod_timer(&ir->timer, timeout);
}

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

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;

	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
	input_dev = input_allocate_device();
	if (!ir || !input_dev) {
		kfree(ir);
		input_free_device(input_dev);
		return -ENOMEM;
	}

	ir->input = input_dev;

	/* detect & configure */
	switch (core->board) {
	case CX88_BOARD_DNTV_LIVE_DVB_T:
	case CX88_BOARD_KWORLD_DVB_T:
		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:
		ir_codes = ir_codes_hauppauge_new;
		ir_type = IR_TYPE_RC5;
		ir->sampling = 1;
		break;
	case CX88_BOARD_WINFAST2000XP_EXPERT:
		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_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;
	}

	if (NULL == ir_codes) {
		kfree(ir);
		input_free_device(input_dev);
		return -ENODEV;
	}

	/* 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->cdev.dev = &pci->dev;
	/* record handles to ourself */
	ir->core = core;
	core->ir = ir;

	if (ir->polling) {
		INIT_WORK(&ir->work, cx88_ir_work, ir);
		init_timer(&ir->timer);
		ir->timer.function = ir_timer;
		ir->timer.data = (unsigned long)ir;
		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 */
	}

	/* all done */
	input_register_device(ir->input);

	return 0;
}

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;

	if (ir->sampling) {
		cx_write(MO_DDSCFG_IO, 0x0);
		core->pci_irqmask &= ~(1 << 18);
	}
	if (ir->polling) {
		del_timer(&ir->timer);
		flush_scheduled_work();
	}

	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:
		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;
	73	u32 gpio, data;
	74
	75	/* read gpio value */
	76	gpio = cx_read(ir->gpio_addr);
	77	if (ir->polling) {
	78	if (ir->last_gpio == gpio)
	79	return;
	80	ir->last_gpio = gpio;
	81	}
	82
	83	/* extract data */
	84	data = ir_extract_bits(gpio, ir->mask_keycode);
	85	ir_dprintk("irq gpio=0x%x code=%d \| %s%s%s\n",
41ef7c1e MCC	86	gpio, data,
	87	ir->polling ? "poll" : "irq",
	88	(gpio & ir->mask_keydown) ? " down" : "",
	89	(gpio & ir->mask_keyup) ? " up" : "");
1da177e4 LT	90
	91	if (ir->mask_keydown) {
	92	/* bit set on keydown */
	93	if (gpio & ir->mask_keydown) {
b7df3910	94	ir_input_keydown(ir->input, &ir->ir, data, data);
1da177e4	95	} else {
b7df3910	96	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	97	}
	98
	99	} else if (ir->mask_keyup) {
	100	/* bit cleared on keydown */
	101	if (0 == (gpio & ir->mask_keyup)) {
b7df3910	102	ir_input_keydown(ir->input, &ir->ir, data, data);
1da177e4	103	} else {
b7df3910	104	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	105	}
	106
	107	} else {
	108	/* can't distinguish keydown/up :-/ */
b7df3910 DT	109	ir_input_keydown(ir->input, &ir->ir, data, data);
b7df3910 DT	110	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	111	}
	112	}
	113
	114	static void ir_timer(unsigned long data)
	115	{
41ef7c1e	116	struct cx88_IR ir = (struct cx88_IR )data;
1da177e4 LT	117
	118	schedule_work(&ir->work);
	119	}
	120
	121	static void cx88_ir_work(void *data)
	122	{
	123	struct cx88_IR *ir = data;
	124	unsigned long timeout;
	125
	126	cx88_ir_handle_key(ir);
	127	timeout = jiffies + (ir->polling * HZ / 1000);
	128	mod_timer(&ir->timer, timeout);
	129	}
	130
	131	/* ---------------------------------------------------------------------- */
	132
	133	int cx88_ir_init(struct cx88_core core, struct pci_dev pci)
	134	{
	135	struct cx88_IR *ir;
b7df3910	136	struct input_dev *input_dev;
1da177e4 LT	137	IR_KEYTAB_TYPE *ir_codes = NULL;
	138	int ir_type = IR_TYPE_OTHER;
	139
b7df3910 DT	140	ir = kzalloc(sizeof(*ir), GFP_KERNEL);
	141	input_dev = input_allocate_device();
	142	if (!ir \|\| !input_dev) {
	143	kfree(ir);
	144	input_free_device(input_dev);
1da177e4	145	return -ENOMEM;
b7df3910 DT	146	}
	147
	148	ir->input = input_dev;
1da177e4 LT	149
	150	/* detect & configure */
	151	switch (core->board) {
	152	case CX88_BOARD_DNTV_LIVE_DVB_T:
b45009b0	153	case CX88_BOARD_KWORLD_DVB_T:
41ef7c1e MCC	154	ir_codes = ir_codes_dntv_live_dvb_t;
41ef7c1e MCC	155	ir->gpio_addr = MO_GP1_IO;
1da177e4	156	ir->mask_keycode = 0x1f;
41ef7c1e MCC	157	ir->mask_keyup = 0x60;
41ef7c1e MCC	158	ir->polling = 50; /* ms */
1da177e4	159	break;
e52e98a7 MCC	160	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
	161	ir_codes = ir_codes_cinergy_1400;
	162	ir_type = IR_TYPE_PD;
fc40b261	163	ir->sampling = 0xeb04; /* address */
e52e98a7	164	break;
1da177e4 LT	165	case CX88_BOARD_HAUPPAUGE:
1da177e4 LT	166	case CX88_BOARD_HAUPPAUGE_DVB_T1:
fb56cb65 ST	167	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
fb56cb65 ST	168	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
611900c1	169	case CX88_BOARD_HAUPPAUGE_HVR1100:
41ef7c1e MCC	170	ir_codes = ir_codes_hauppauge_new;
	171	ir_type = IR_TYPE_RC5;
	172	ir->sampling = 1;
1da177e4 LT	173	break;
1da177e4 LT	174	case CX88_BOARD_WINFAST2000XP_EXPERT:
41ef7c1e MCC	175	ir_codes = ir_codes_winfast;
41ef7c1e MCC	176	ir->gpio_addr = MO_GP0_IO;
1da177e4	177	ir->mask_keycode = 0x8f8;
41ef7c1e MCC	178	ir->mask_keyup = 0x100;
41ef7c1e MCC	179	ir->polling = 1; /* ms */
1da177e4 LT	180	break;
1da177e4 LT	181	case CX88_BOARD_IODATA_GVBCTV7E:
41ef7c1e MCC	182	ir_codes = ir_codes_iodata_bctv7e;
41ef7c1e MCC	183	ir->gpio_addr = MO_GP0_IO;
1da177e4 LT	184	ir->mask_keycode = 0xfd;
1da177e4 LT	185	ir->mask_keydown = 0x02;
41ef7c1e	186	ir->polling = 5; /* ms */
1da177e4	187	break;
239df2e2	188	case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
41ef7c1e MCC	189	ir_codes = ir_codes_pixelview;
41ef7c1e MCC	190	ir->gpio_addr = MO_GP1_IO;
239df2e2	191	ir->mask_keycode = 0x1f;
41ef7c1e MCC	192	ir->mask_keyup = 0x80;
41ef7c1e MCC	193	ir->polling = 1; /* ms */
239df2e2	194	break;
b639f9d2 NS	195	case CX88_BOARD_KWORLD_LTV883:
	196	ir_codes = ir_codes_pixelview;
	197	ir->gpio_addr = MO_GP1_IO;
	198	ir->mask_keycode = 0x1f;
	199	ir->mask_keyup = 0x60;
	200	ir->polling = 1; /* ms */
	201	break;
a82decf6	202	case CX88_BOARD_ADSTECH_DVB_T_PCI:
41ef7c1e MCC	203	ir_codes = ir_codes_adstech_dvb_t_pci;
41ef7c1e MCC	204	ir->gpio_addr = MO_GP1_IO;
a82decf6	205	ir->mask_keycode = 0xbf;
41ef7c1e MCC	206	ir->mask_keyup = 0x40;
	207	ir->polling = 50; /* ms */
	208	break;
	209	case CX88_BOARD_MSI_TVANYWHERE_MASTER:
	210	ir_codes = ir_codes_msi_tvanywhere;
	211	ir->gpio_addr = MO_GP1_IO;
	212	ir->mask_keycode = 0x1f;
	213	ir->mask_keyup = 0x40;
	214	ir->polling = 1; /* ms */
a82decf6	215	break;
899ad11b	216	case CX88_BOARD_AVERTV_303:
565f4949	217	case CX88_BOARD_AVERTV_STUDIO_303:
899ad11b GG	218	ir_codes = ir_codes_avertv_303;
	219	ir->gpio_addr = MO_GP2_IO;
	220	ir->mask_keycode = 0xfb;
	221	ir->mask_keydown = 0x02;
	222	ir->polling = 50; /* ms */
	223	break;
fc40b261 CP	224	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
	225	ir_codes = ir_codes_dntv_live_dvbt_pro;
	226	ir_type = IR_TYPE_PD;
	227	ir->sampling = 0xff00; /* address */
	228	break;
1da177e4	229	}
b45009b0	230
1da177e4 LT	231	if (NULL == ir_codes) {
1da177e4 LT	232	kfree(ir);
b7df3910	233	input_free_device(input_dev);
1da177e4 LT	234	return -ENODEV;
	235	}
	236
	237	/* init input device */
	238	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)",
	239	cx88_boards[core->board].name);
41ef7c1e	240	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
1da177e4	241
b7df3910 DT	242	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
	243	input_dev->name = ir->name;
	244	input_dev->phys = ir->phys;
	245	input_dev->id.bustype = BUS_PCI;
	246	input_dev->id.version = 1;
1da177e4	247	if (pci->subsystem_vendor) {
b7df3910 DT	248	input_dev->id.vendor = pci->subsystem_vendor;
b7df3910 DT	249	input_dev->id.product = pci->subsystem_device;
1da177e4	250	} else {
b7df3910 DT	251	input_dev->id.vendor = pci->vendor;
b7df3910 DT	252	input_dev->id.product = pci->device;
1da177e4	253	}
b7df3910	254	input_dev->cdev.dev = &pci->dev;
1da177e4 LT	255	/* record handles to ourself */
	256	ir->core = core;
	257	core->ir = ir;
	258
	259	if (ir->polling) {
	260	INIT_WORK(&ir->work, cx88_ir_work, ir);
	261	init_timer(&ir->timer);
	262	ir->timer.function = ir_timer;
41ef7c1e	263	ir->timer.data = (unsigned long)ir;
1da177e4 LT	264	schedule_work(&ir->work);
	265	}
	266	if (ir->sampling) {
41ef7c1e MCC	267	core->pci_irqmask \|= (1 << 18); /* IR_SMP_INT */
	268	cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */
	269	cx_write(MO_DDSCFG_IO, 0x5); /* enable */
1da177e4 LT	270	}
	271
	272	/* all done */
b7df3910	273	input_register_device(ir->input);
1da177e4 LT	274
	275	return 0;
	276	}
	277
	278	int cx88_ir_fini(struct cx88_core *core)
	279	{
	280	struct cx88_IR *ir = core->ir;
	281
	282	/* skip detach on non attached boards */
	283	if (NULL == ir)
	284	return 0;
	285
fc40b261 CP	286	if (ir->sampling) {
	287	cx_write(MO_DDSCFG_IO, 0x0);
	288	core->pci_irqmask &= ~(1 << 18);
	289	}
1da177e4 LT	290	if (ir->polling) {
	291	del_timer(&ir->timer);
	292	flush_scheduled_work();
	293	}
	294
b7df3910	295	input_unregister_device(ir->input);
1da177e4 LT	296	kfree(ir);
	297
	298	/* done */
	299	core->ir = NULL;
	300	return 0;
	301	}
	302
	303	/* ---------------------------------------------------------------------- */
	304
	305	void cx88_ir_irq(struct cx88_core *core)
	306	{
	307	struct cx88_IR *ir = core->ir;
e52e98a7	308	u32 samples, ircode;
1da177e4 LT	309	int i;
	310
	311	if (NULL == ir)
	312	return;
	313	if (!ir->sampling)
	314	return;
	315
	316	samples = cx_read(MO_SAMPLE_IO);
41ef7c1e	317	if (0 != samples && 0xffffffff != samples) {
1da177e4 LT	318	/* record sample data */
	319	if (ir->scount < ARRAY_SIZE(ir->samples))
	320	ir->samples[ir->scount++] = samples;
	321	return;
	322	}
	323	if (!ir->scount) {
	324	/* nothing to sample */
41ef7c1e	325	if (ir->ir.keypressed && time_after(jiffies, ir->release))
b7df3910	326	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	327	return;
	328	}
	329
	330	/* have a complete sample */
	331	if (ir->scount < ARRAY_SIZE(ir->samples))
	332	ir->samples[ir->scount++] = samples;
	333	for (i = 0; i < ir->scount; i++)
	334	ir->samples[i] = ~ir->samples[i];
	335	if (ir_debug)
41ef7c1e	336	ir_dump_samples(ir->samples, ir->scount);
1da177e4 LT	337
	338	/* decode it */
	339	switch (core->board) {
e52e98a7	340	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
fc40b261	341	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
e52e98a7 MCC	342	ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
	343
	344	if (ircode == 0xffffffff) { /* decoding error */
	345	ir_dprintk("pulse distance decoding error\n");
	346	break;
	347	}
	348
	349	ir_dprintk("pulse distance decoded: %x\n", ircode);
	350
	351	if (ircode == 0) { /* key still pressed */
	352	ir_dprintk("pulse distance decoded repeat code\n");
	353	ir->release = jiffies + msecs_to_jiffies(120);
	354	break;
	355	}
	356
fc40b261	357	if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
e52e98a7	358	ir_dprintk("pulse distance decoded wrong address\n");
4ac97914	359	break;
e52e98a7 MCC	360	}
	361
	362	if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
	363	ir_dprintk("pulse distance decoded wrong check sum\n");
	364	break;
	365	}
	366
	367	ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
	368
b7df3910	369	ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
e52e98a7 MCC	370	ir->release = jiffies + msecs_to_jiffies(120);
e52e98a7 MCC	371	break;
1da177e4 LT	372	case CX88_BOARD_HAUPPAUGE:
1da177e4 LT	373	case CX88_BOARD_HAUPPAUGE_DVB_T1:
fb56cb65 ST	374	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
fb56cb65 ST	375	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
30367bfd	376	case CX88_BOARD_HAUPPAUGE_HVR1100:
e52e98a7 MCC	377	ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
	378	ir_dprintk("biphase decoded: %x\n", ircode);
	379	if ((ircode & 0xfffff000) != 0x3000)
1da177e4	380	break;
b7df3910	381	ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode);
1da177e4 LT	382	ir->release = jiffies + msecs_to_jiffies(120);
	383	break;
	384	}
	385
	386	ir->scount = 0;
	387	return;
	388	}
	389
	390	/* ---------------------------------------------------------------------- */
	391
	392	MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
	393	MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
	394	MODULE_LICENSE("GPL");
1da177e4 LT	395	/*
	396	* Local variables:
	397	* c-basic-offset: 8
	398	* End:
	399	*/