[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/hrtimer.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 hrtimer 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:
	case CX88_BOARD_WINFAST_DTV1800H:
	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
		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 enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
{
	unsigned long missed;
	struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);

	cx88_ir_handle_key(ir);
	missed = hrtimer_forward_now(&ir->timer,
				     ktime_set(0, ir->polling * 1000000));
	if (missed > 1)
		ir_dprintk("Missed ticks %ld\n", missed - 1);

	return HRTIMER_RESTART;
}

void cx88_ir_start(struct cx88_core *core, struct cx88_IR *ir)
{
	if (ir->polling) {
		hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
		ir->timer.function = cx88_ir_work;
		hrtimer_start(&ir->timer,
			      ktime_set(0, ir->polling * 1000000),
			      HRTIMER_MODE_REL);
	}
	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)
		hrtimer_cancel(&ir->timer);
}

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

int cx88_ir_init(struct cx88_core *core, struct pci_dev *pci)
{
	struct cx88_IR *ir;
	struct input_dev *input_dev;
	struct ir_scancode_table *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_table;
		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_table;
		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:
	case CX88_BOARD_HAUPPAUGE_IRONLY:
		ir_codes = &ir_codes_hauppauge_new_table;
		ir_type = IR_TYPE_RC5;
		ir->sampling = 1;
		break;
	case CX88_BOARD_WINFAST_DTV2000H:
	case CX88_BOARD_WINFAST_DTV2000H_J:
	case CX88_BOARD_WINFAST_DTV1800H:
		ir_codes = &ir_codes_winfast_table;
		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:
	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
		ir_codes = &ir_codes_winfast_table;
		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_table;
		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_table;
		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_table;
		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_table;
		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_table;
		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_table;
		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_table;
		ir->gpio_addr    = MO_GP2_IO;
		ir->mask_keycode = 0xfb;
		ir->mask_keydown = 0x02;
		ir->polling      = 50; /* ms */
		break;
	case CX88_BOARD_OMICOM_SS4_PCI:
	case CX88_BOARD_SATTRADE_ST4200:
	case CX88_BOARD_TBS_8920:
	case CX88_BOARD_TBS_8910:
	case CX88_BOARD_PROF_7300:
	case CX88_BOARD_PROF_6200:
		ir_codes = &ir_codes_tbs_nec_table;
		ir_type = IR_TYPE_PD;
		ir->sampling = 0xff00; /* address */
		break;
	case CX88_BOARD_TEVII_S460:
	case CX88_BOARD_TEVII_S420:
		ir_codes = &ir_codes_tevii_nec_table;
		ir_type = IR_TYPE_PD;
		ir->sampling = 0xff00; /* address */
		break;
	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
		ir_codes         = &ir_codes_dntv_live_dvbt_pro_table;
		ir_type          = IR_TYPE_PD;
		ir->sampling     = 0xff00; /* address */
		break;
	case CX88_BOARD_NORWOOD_MICRO:
		ir_codes         = &ir_codes_norwood_table;
		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_table;
		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_table;
		ir_type          = IR_TYPE_RC5;
		ir->sampling     = 1;
		break;
	case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
		ir_codes         = &ir_codes_powercolor_real_angel_table;
		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_TEVII_S460:
	case CX88_BOARD_TEVII_S420:
	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
	case CX88_BOARD_OMICOM_SS4_PCI:
	case CX88_BOARD_SATTRADE_ST4200:
	case CX88_BOARD_TBS_8920:
	case CX88_BOARD_TBS_8910:
	case CX88_BOARD_PROF_7300:
	case CX88_BOARD_PROF_6200:
		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:
	case CX88_BOARD_HAUPPAUGE_IRONLY:
		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>
3c1c48bb	26	#include <linux/hrtimer.h>
1da177e4 LT	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;
3c1c48bb	51	struct hrtimer timer;
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:
3047a176	94	case CX88_BOARD_WINFAST_DTV1800H:
3e9a4897	95	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
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
6a59d64c	116	if (ir->core->boardnr == CX88_BOARD_NORWOOD_MICRO) {
d1009bd7 PN	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
3c1c48bb	147	static enum hrtimer_restart cx88_ir_work(struct hrtimer *timer)
1da177e4	148	{
3c1c48bb AH	149	unsigned long missed;
3c1c48bb AH	150	struct cx88_IR *ir = container_of(timer, struct cx88_IR, timer);
1da177e4 LT	151
1da177e4 LT	152	cx88_ir_handle_key(ir);
3c1c48bb AH	153	missed = hrtimer_forward_now(&ir->timer,
	154	ktime_set(0, ir->polling * 1000000));
	155	if (missed > 1)
	156	ir_dprintk("Missed ticks %ld\n", missed - 1);
	157
	158	return HRTIMER_RESTART;
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) {
3c1c48bb AH	164	hrtimer_init(&ir->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
	165	ir->timer.function = cx88_ir_work;
	166	hrtimer_start(&ir->timer,
	167	ktime_set(0, ir->polling * 1000000),
	168	HRTIMER_MODE_REL);
b07b4783 DT	169	}
b07b4783 DT	170	if (ir->sampling) {
8ddac9ee	171	core->pci_irqmask \|= PCI_INT_IR_SMPINT;
b07b4783 DT	172	cx_write(MO_DDS_IO, 0xa80a80); /* 4 kHz sample rate */
	173	cx_write(MO_DDSCFG_IO, 0x5); /* enable */
	174	}
	175	}
	176
13595a51	177	void cx88_ir_stop(struct cx88_core core, struct cx88_IR ir)
b07b4783 DT	178	{
	179	if (ir->sampling) {
	180	cx_write(MO_DDSCFG_IO, 0x0);
8ddac9ee	181	core->pci_irqmask &= ~PCI_INT_IR_SMPINT;
b07b4783 DT	182	}
b07b4783 DT	183
569b7ec7	184	if (ir->polling)
3c1c48bb	185	hrtimer_cancel(&ir->timer);
b07b4783 DT	186	}
b07b4783 DT	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;
715a2233	194	struct ir_scancode_table *ir_codes = NULL;
1da177e4	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:
715a2233	210	ir_codes = &ir_codes_dntv_live_dvb_t_table;
41ef7c1e	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	216	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
715a2233	217	ir_codes = &ir_codes_cinergy_1400_table;
e52e98a7	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:
f1735bb2 EB	229	case CX88_BOARD_PCHDTV_HD3000:
f1735bb2 EB	230	case CX88_BOARD_PCHDTV_HD5500:
501d8cd4	231	case CX88_BOARD_HAUPPAUGE_IRONLY:
715a2233	232	ir_codes = &ir_codes_hauppauge_new_table;
41ef7c1e MCC	233	ir_type = IR_TYPE_RC5;
41ef7c1e MCC	234	ir->sampling = 1;
1da177e4	235	break;
2de873e6	236	case CX88_BOARD_WINFAST_DTV2000H:
4d14c833	237	case CX88_BOARD_WINFAST_DTV2000H_J:
3047a176	238	case CX88_BOARD_WINFAST_DTV1800H:
715a2233	239	ir_codes = &ir_codes_winfast_table;
41ef7c1e	240	ir->gpio_addr = MO_GP0_IO;
1da177e4	241	ir->mask_keycode = 0x8f8;
41ef7c1e	242	ir->mask_keyup = 0x100;
2de873e6	243	ir->polling = 50; /* ms */
1da177e4	244	break;
ff97d93d	245	case CX88_BOARD_WINFAST2000XP_EXPERT:
e7d11ecb	246	case CX88_BOARD_WINFAST_DTV1000:
3e9a4897	247	case CX88_BOARD_WINFAST_TV2000_XP_GLOBAL:
715a2233	248	ir_codes = &ir_codes_winfast_table;
ff97d93d HP	249	ir->gpio_addr = MO_GP0_IO;
	250	ir->mask_keycode = 0x8f8;
	251	ir->mask_keyup = 0x100;
	252	ir->polling = 1; /* ms */
	253	break;
1da177e4	254	case CX88_BOARD_IODATA_GVBCTV7E:
715a2233	255	ir_codes = &ir_codes_iodata_bctv7e_table;
41ef7c1e	256	ir->gpio_addr = MO_GP0_IO;
1da177e4 LT	257	ir->mask_keycode = 0xfd;
1da177e4 LT	258	ir->mask_keydown = 0x02;
41ef7c1e	259	ir->polling = 5; /* ms */
1da177e4	260	break;
ff97d93d	261	case CX88_BOARD_PROLINK_PLAYTVPVR:
239df2e2	262	case CX88_BOARD_PIXELVIEW_PLAYTV_ULTRA_PRO:
715a2233	263	ir_codes = &ir_codes_pixelview_table;
41ef7c1e	264	ir->gpio_addr = MO_GP1_IO;
239df2e2	265	ir->mask_keycode = 0x1f;
41ef7c1e MCC	266	ir->mask_keyup = 0x80;
41ef7c1e MCC	267	ir->polling = 1; /* ms */
239df2e2	268	break;
7f0dd179	269	case CX88_BOARD_PROLINK_PV_8000GT:
a31d2bb7	270	case CX88_BOARD_PROLINK_PV_GLOBAL_XTREME:
715a2233	271	ir_codes = &ir_codes_pixelview_new_table;
7f0dd179 MCC	272	ir->gpio_addr = MO_GP1_IO;
	273	ir->mask_keycode = 0x3f;
	274	ir->mask_keyup = 0x80;
	275	ir->polling = 1; /* ms */
	276	break;
b639f9d2	277	case CX88_BOARD_KWORLD_LTV883:
715a2233	278	ir_codes = &ir_codes_pixelview_table;
b639f9d2 NS	279	ir->gpio_addr = MO_GP1_IO;
	280	ir->mask_keycode = 0x1f;
	281	ir->mask_keyup = 0x60;
	282	ir->polling = 1; /* ms */
	283	break;
a82decf6	284	case CX88_BOARD_ADSTECH_DVB_T_PCI:
715a2233	285	ir_codes = &ir_codes_adstech_dvb_t_pci_table;
41ef7c1e	286	ir->gpio_addr = MO_GP1_IO;
a82decf6	287	ir->mask_keycode = 0xbf;
41ef7c1e MCC	288	ir->mask_keyup = 0x40;
	289	ir->polling = 50; /* ms */
	290	break;
	291	case CX88_BOARD_MSI_TVANYWHERE_MASTER:
715a2233	292	ir_codes = &ir_codes_msi_tvanywhere_table;
41ef7c1e MCC	293	ir->gpio_addr = MO_GP1_IO;
	294	ir->mask_keycode = 0x1f;
	295	ir->mask_keyup = 0x40;
	296	ir->polling = 1; /* ms */
a82decf6	297	break;
899ad11b	298	case CX88_BOARD_AVERTV_303:
565f4949	299	case CX88_BOARD_AVERTV_STUDIO_303:
715a2233	300	ir_codes = &ir_codes_avertv_303_table;
899ad11b GG	301	ir->gpio_addr = MO_GP2_IO;
	302	ir->mask_keycode = 0xfb;
	303	ir->mask_keydown = 0x02;
	304	ir->polling = 50; /* ms */
	305	break;
d8d86225 IL	306	case CX88_BOARD_OMICOM_SS4_PCI:
	307	case CX88_BOARD_SATTRADE_ST4200:
	308	case CX88_BOARD_TBS_8920:
	309	case CX88_BOARD_TBS_8910:
	310	case CX88_BOARD_PROF_7300:
	311	case CX88_BOARD_PROF_6200:
	312	ir_codes = &ir_codes_tbs_nec_table;
	313	ir_type = IR_TYPE_PD;
	314	ir->sampling = 0xff00; /* address */
	315	break;
	316	case CX88_BOARD_TEVII_S460:
	317	case CX88_BOARD_TEVII_S420:
9d2ba7ad	318	ir_codes = &ir_codes_tevii_nec_table;
d8d86225 IL	319	ir_type = IR_TYPE_PD;
	320	ir->sampling = 0xff00; /* address */
	321	break;
fc40b261	322	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
715a2233 MCC	323	ir_codes = &ir_codes_dntv_live_dvbt_pro_table;
	324	ir_type = IR_TYPE_PD;
	325	ir->sampling = 0xff00; /* address */
fc40b261	326	break;
d1009bd7	327	case CX88_BOARD_NORWOOD_MICRO:
715a2233	328	ir_codes = &ir_codes_norwood_table;
d1009bd7 PN	329	ir->gpio_addr = MO_GP1_IO;
	330	ir->mask_keycode = 0x0e;
	331	ir->mask_keyup = 0x80;
	332	ir->polling = 50; /* ms */
	333	break;
be4f4519	334	case CX88_BOARD_NPGTECH_REALTV_TOP10FM:
715a2233 MCC	335	ir_codes = &ir_codes_npgtech_table;
715a2233 MCC	336	ir->gpio_addr = MO_GP0_IO;
680543c5	337	ir->mask_keycode = 0xfa;
715a2233	338	ir->polling = 50; /* ms */
680543c5	339	break;
9121106a	340	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
715a2233 MCC	341	ir_codes = &ir_codes_pinnacle_pctv_hd_table;
	342	ir_type = IR_TYPE_RC5;
	343	ir->sampling = 1;
9121106a	344	break;
ba928034	345	case CX88_BOARD_POWERCOLOR_REAL_ANGEL:
715a2233 MCC	346	ir_codes = &ir_codes_powercolor_real_angel_table;
715a2233 MCC	347	ir->gpio_addr = MO_GP2_IO;
ba928034	348	ir->mask_keycode = 0x7e;
715a2233	349	ir->polling = 100; /* ms */
ba928034	350	break;
1da177e4	351	}
b45009b0	352
1da177e4	353	if (NULL == ir_codes) {
b07b4783 DT	354	err = -ENODEV;
b07b4783 DT	355	goto err_out_free;
1da177e4 LT	356	}
	357
	358	/* init input device */
6a59d64c	359	snprintf(ir->name, sizeof(ir->name), "cx88 IR (%s)", core->board.name);
41ef7c1e	360	snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0", pci_name(pci));
1da177e4	361
b7df3910 DT	362	ir_input_init(input_dev, &ir->ir, ir_type, ir_codes);
	363	input_dev->name = ir->name;
	364	input_dev->phys = ir->phys;
	365	input_dev->id.bustype = BUS_PCI;
	366	input_dev->id.version = 1;
1da177e4	367	if (pci->subsystem_vendor) {
b7df3910 DT	368	input_dev->id.vendor = pci->subsystem_vendor;
b7df3910 DT	369	input_dev->id.product = pci->subsystem_device;
1da177e4	370	} else {
b7df3910 DT	371	input_dev->id.vendor = pci->vendor;
b7df3910 DT	372	input_dev->id.product = pci->device;
1da177e4	373	}
2c8a3a33	374	input_dev->dev.parent = &pci->dev;
1da177e4 LT	375	/* record handles to ourself */
	376	ir->core = core;
	377	core->ir = ir;
	378
b07b4783	379	cx88_ir_start(core, ir);
1da177e4 LT	380
1da177e4 LT	381	/* all done */
b07b4783 DT	382	err = input_register_device(ir->input);
	383	if (err)
	384	goto err_out_stop;
1da177e4 LT	385
1da177e4 LT	386	return 0;
b07b4783 DT	387
	388	err_out_stop:
	389	cx88_ir_stop(core, ir);
	390	core->ir = NULL;
	391	err_out_free:
	392	input_free_device(input_dev);
	393	kfree(ir);
	394	return err;
1da177e4 LT	395	}
	396
	397	int cx88_ir_fini(struct cx88_core *core)
	398	{
	399	struct cx88_IR *ir = core->ir;
	400
	401	/* skip detach on non attached boards */
	402	if (NULL == ir)
	403	return 0;
	404
b07b4783	405	cx88_ir_stop(core, ir);
b7df3910	406	input_unregister_device(ir->input);
1da177e4 LT	407	kfree(ir);
	408
	409	/* done */
	410	core->ir = NULL;
	411	return 0;
	412	}
	413
	414	/* ---------------------------------------------------------------------- */
	415
	416	void cx88_ir_irq(struct cx88_core *core)
	417	{
	418	struct cx88_IR *ir = core->ir;
e52e98a7	419	u32 samples, ircode;
34c08029	420	int i, start, range, toggle, dev, code;
1da177e4 LT	421
	422	if (NULL == ir)
	423	return;
	424	if (!ir->sampling)
	425	return;
	426
	427	samples = cx_read(MO_SAMPLE_IO);
41ef7c1e	428	if (0 != samples && 0xffffffff != samples) {
1da177e4 LT	429	/* record sample data */
	430	if (ir->scount < ARRAY_SIZE(ir->samples))
	431	ir->samples[ir->scount++] = samples;
	432	return;
	433	}
	434	if (!ir->scount) {
	435	/* nothing to sample */
41ef7c1e	436	if (ir->ir.keypressed && time_after(jiffies, ir->release))
b7df3910	437	ir_input_nokey(ir->input, &ir->ir);
1da177e4 LT	438	return;
	439	}
	440
	441	/* have a complete sample */
	442	if (ir->scount < ARRAY_SIZE(ir->samples))
	443	ir->samples[ir->scount++] = samples;
	444	for (i = 0; i < ir->scount; i++)
	445	ir->samples[i] = ~ir->samples[i];
	446	if (ir_debug)
41ef7c1e	447	ir_dump_samples(ir->samples, ir->scount);
1da177e4 LT	448
1da177e4 LT	449	/* decode it */
6a59d64c	450	switch (core->boardnr) {
d8d86225 IL	451	case CX88_BOARD_TEVII_S460:
d8d86225 IL	452	case CX88_BOARD_TEVII_S420:
e52e98a7	453	case CX88_BOARD_TERRATEC_CINERGY_1400_DVB_T1:
fc40b261	454	case CX88_BOARD_DNTV_LIVE_DVB_T_PRO:
d8d86225 IL	455	case CX88_BOARD_OMICOM_SS4_PCI:
	456	case CX88_BOARD_SATTRADE_ST4200:
	457	case CX88_BOARD_TBS_8920:
	458	case CX88_BOARD_TBS_8910:
	459	case CX88_BOARD_PROF_7300:
	460	case CX88_BOARD_PROF_6200:
e52e98a7 MCC	461	ircode = ir_decode_pulsedistance(ir->samples, ir->scount, 1, 4);
	462
	463	if (ircode == 0xffffffff) { /* decoding error */
	464	ir_dprintk("pulse distance decoding error\n");
	465	break;
	466	}
	467
	468	ir_dprintk("pulse distance decoded: %x\n", ircode);
	469
	470	if (ircode == 0) { /* key still pressed */
	471	ir_dprintk("pulse distance decoded repeat code\n");
	472	ir->release = jiffies + msecs_to_jiffies(120);
	473	break;
	474	}
	475
fc40b261	476	if ((ircode & 0xffff) != (ir->sampling & 0xffff)) { /* wrong address */
e52e98a7	477	ir_dprintk("pulse distance decoded wrong address\n");
4ac97914	478	break;
e52e98a7 MCC	479	}
	480
	481	if (((~ircode >> 24) & 0xff) != ((ircode >> 16) & 0xff)) { /* wrong checksum */
	482	ir_dprintk("pulse distance decoded wrong check sum\n");
	483	break;
	484	}
	485
	486	ir_dprintk("Key Code: %x\n", (ircode >> 16) & 0x7f);
	487
b7df3910	488	ir_input_keydown(ir->input, &ir->ir, (ircode >> 16) & 0x7f, (ircode >> 16) & 0xff);
e52e98a7 MCC	489	ir->release = jiffies + msecs_to_jiffies(120);
e52e98a7 MCC	490	break;
1da177e4 LT	491	case CX88_BOARD_HAUPPAUGE:
1da177e4 LT	492	case CX88_BOARD_HAUPPAUGE_DVB_T1:
fb56cb65 ST	493	case CX88_BOARD_HAUPPAUGE_NOVASE2_S1:
fb56cb65 ST	494	case CX88_BOARD_HAUPPAUGE_NOVASPLUS_S1:
30367bfd	495	case CX88_BOARD_HAUPPAUGE_HVR1100:
76dc82ab	496	case CX88_BOARD_HAUPPAUGE_HVR3000:
5bd1b663 ST	497	case CX88_BOARD_HAUPPAUGE_HVR4000:
5bd1b663 ST	498	case CX88_BOARD_HAUPPAUGE_HVR4000LITE:
f1735bb2 EB	499	case CX88_BOARD_PCHDTV_HD3000:
f1735bb2 EB	500	case CX88_BOARD_PCHDTV_HD5500:
501d8cd4	501	case CX88_BOARD_HAUPPAUGE_IRONLY:
34c08029 DB	502	ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
	503	ir_dprintk("biphase decoded: %x\n", ircode);
	504	/*
	505	* RC5 has an extension bit which adds a new range
	506	* of available codes, this is detected here. Also
	507	* hauppauge remotes (black/silver) always use
	508	* specific device ids. If we do not filter the
	509	* device ids then messages destined for devices
	510	* such as TVs (id=0) will get through to the
	511	* device causing mis-fired events.
	512	*/
	513	/* split rc5 data block ... */
	514	start = (ircode & 0x2000) >> 13;
	515	range = (ircode & 0x1000) >> 12;
	516	toggle= (ircode & 0x0800) >> 11;
	517	dev = (ircode & 0x07c0) >> 6;
	518	code = (ircode & 0x003f) \| ((range << 6) ^ 0x0040);
	519	if( start != 1)
	520	/* no key pressed */
	521	break;
	522	if ( dev != 0x1e && dev != 0x1f )
	523	/* not a hauppauge remote */
	524	break;
	525	ir_input_keydown(ir->input, &ir->ir, code, ircode);
	526	ir->release = jiffies + msecs_to_jiffies(120);
	527	break;
	528	case CX88_BOARD_PINNACLE_PCTV_HD_800i:
e52e98a7 MCC	529	ircode = ir_decode_biphase(ir->samples, ir->scount, 5, 7);
	530	ir_dprintk("biphase decoded: %x\n", ircode);
	531	if ((ircode & 0xfffff000) != 0x3000)
1da177e4	532	break;
b7df3910	533	ir_input_keydown(ir->input, &ir->ir, ircode & 0x3f, ircode);
1da177e4 LT	534	ir->release = jiffies + msecs_to_jiffies(120);
	535	break;
	536	}
	537
	538	ir->scount = 0;
	539	return;
	540	}
	541
	542	/* ---------------------------------------------------------------------- */
	543
	544	MODULE_AUTHOR("Gerd Knorr, Pavel Machek, Chris Pascoe");
	545	MODULE_DESCRIPTION("input driver for cx88 GPIO-based IR remote controls");
	546	MODULE_LICENSE("GPL");
1da177e4 LT	547	/*
	548	* Local variables:
	549	* c-basic-offset: 8
	550	* End:
	551	*/