/*
*
* Copyright (c) 2003 Gerd Knorr
* Copyright (c) 2003 Pavel Machek
*
* 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/module.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include "bttv.h"
#include "bttvp.h"
static int debug;
module_param(debug, int, 0644); /* debug level (0,1,2) */
static int repeat_delay = 500;
module_param(repeat_delay, int, 0644);
static int repeat_period = 33;
module_param(repeat_period, int, 0644);
static int ir_rc5_remote_gap = 885;
module_param(ir_rc5_remote_gap, int, 0644);
static int ir_rc5_key_timeout = 200;
module_param(ir_rc5_key_timeout, int, 0644);
#define DEVNAME "bttv-input"
/* ---------------------------------------------------------------------- */
static void ir_handle_key(struct bttv *btv)
{
struct card_ir *ir = btv->remote;
u32 gpio,data;
/* read gpio value */
gpio = bttv_gpio_read(&btv->c);
if (ir->polling) {
if (ir->last_gpio == gpio)
return;
ir->last_gpio = gpio;
}
/* extract data */
data = ir_extract_bits(gpio, ir->mask_keycode);
dprintk(KERN_INFO DEVNAME ": 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 && (0 != (gpio & ir->mask_keydown))) ||
(ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
ir_input_keydown(ir->dev,&ir->ir,data,data);
} else {
/* HACK: Probably, ir->mask_keydown is missing
for this board */
if (btv->c.type == BTTV_BOARD_WINFAST2000)
ir_input_keydown(ir->dev, &ir->ir, data, data);
ir_input_nokey(ir->dev,&ir->ir);
}
}
void bttv_input_irq(struct bttv *btv)
{
struct card_ir *ir = btv->remote;
if (!ir->polling)
ir_handle_key(btv);
}
static void bttv_input_timer(unsigned long data)
{
struct bttv *btv = (struct bttv*)data;
struct card_ir *ir = btv->remote;
ir_handle_key(btv);
mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
}
/* ---------------------------------------------------------------*/
static int bttv_rc5_irq(struct bttv *btv)
{
struct card_ir *ir = btv->remote;
struct timeval tv;
u32 gpio;
u32 gap;
unsigned long current_jiffies;
/* read gpio port */
gpio = bttv_gpio_read(&btv->c);
/* remote IRQ? */
if (!(gpio & 0x20))
return 0;
/* get time of bit */
current_jiffies = jiffies;
do_gettimeofday(&tv);
/* avoid overflow with gap >1s */
if (tv.tv_sec - ir->base_time.tv_sec > 1) {
gap = 200000;
} else {
gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
tv.tv_usec - ir->base_time.tv_usec;
}
/* active code => add bit */
if (ir->active) {
/* only if in the code (otherwise spurious IRQ or timer
late) */
if (ir->last_bit < 28) {
ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
ir_rc5_remote_gap;
ir->code |= 1 << ir->last_bit;
}
/* starting new code */
} else {
ir->active = 1;
ir->code = 0;
ir->base_time = tv;
ir->last_bit = 0;
mod_timer(&ir->timer_end,
current_jiffies + msecs_to_jiffies(30));
}
/* toggle GPIO pin 4 to reset the irq */
bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
bttv_gpio_write(&btv->c, gpio | (1 << 4));
return 1;
}
/* ---------------------------------------------------------------------- */
static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
{
if (ir->polling) {
setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
ir->timer.expires = jiffies + msecs_to_jiffies(1000);
add_timer(&ir->timer);
} else if (ir->rc5_gpio) {
/* set timer_end for code completion */
init_timer(&ir->timer_end);
ir->timer_end.function = ir_rc5_timer_end;
ir->timer_end.data = (unsigned long)ir;
init_timer(&ir->timer_keyup);
ir->timer_keyup.function = ir_rc5_timer_keyup;
ir->timer_keyup.data = (unsigned long)ir;
ir->shift_by = 1;
ir->start = 3;
ir->addr = 0x0;
ir->rc5_key_timeout = ir_rc5_key_timeout;
ir->rc5_remote_gap = ir_rc5_remote_gap;
}
}
static void bttv_ir_stop(struct bttv *btv)
{
if (btv->remote->polling) {
del_timer_sync(&btv->remote->timer);
flush_scheduled_work();
}
if (btv->remote->rc5_gpio) {
u32 gpio;
del_timer_sync(&btv->remote->timer_end);
flush_scheduled_work();
gpio = bttv_gpio_read(&btv->c);
bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
}
}
int bttv_input_init(struct bttv *btv)
{
struct card_ir *ir;
IR_KEYTAB_TYPE *ir_codes = NULL;
struct input_dev *input_dev;
int ir_type = IR_TYPE_OTHER;
int err = -ENOMEM;
if (!btv->has_remote)
return -ENODEV;
ir = kzalloc(sizeof(*ir),GFP_KERNEL);
input_dev = input_allocate_device();
if (!ir || !input_dev)
goto err_out_free;
/* detect & configure */
switch (btv->c.type) {
case BTTV_BOARD_AVERMEDIA:
case BTTV_BOARD_AVPHONE98:
case BTTV_BOARD_AVERMEDIA98:
ir_codes = ir_codes_avermedia;
ir->mask_keycode = 0xf88000;
ir->mask_keydown = 0x010000;
ir->polling = 50; // ms
break;
case BTTV_BOARD_AVDVBT_761:
case BTTV_BOARD_AVDVBT_771:
ir_codes = ir_codes_avermedia_dvbt;
ir->mask_keycode = 0x0f00c0;
ir->mask_keydown = 0x000020;
ir->polling = 50; // ms
break;
case BTTV_BOARD_PXELVWPLTVPAK:
ir_codes = ir_codes_pixelview;
ir->mask_keycode = 0x003e00;
ir->mask_keyup = 0x010000;
ir->polling = 50; // ms
break;
case BTTV_BOARD_PV_M4900:
case BTTV_BOARD_PV_BT878P_9B:
case BTTV_BOARD_PV_BT878P_PLUS:
ir_codes = ir_codes_pixelview;
ir->mask_keycode = 0x001f00;
ir->mask_keyup = 0x008000;
ir->polling = 50; // ms
break;
case BTTV_BOARD_WINFAST2000:
ir_codes = ir_codes_winfast;
ir->mask_keycode = 0x1f8;
break;
case BTTV_BOARD_MAGICTVIEW061:
case BTTV_BOARD_MAGICTVIEW063:
ir_codes = ir_codes_winfast;
ir->mask_keycode = 0x0008e000;
ir->mask_keydown = 0x00200000;
break;
case BTTV_BOARD_APAC_VIEWCOMP:
ir_codes = ir_codes_apac_viewcomp;
ir->mask_keycode = 0x001f00;
ir->mask_keyup = 0x008000;
ir->polling = 50; // ms
break;
case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
case BTTV_BOARD_CONTVFMI:
ir_codes = ir_codes_pixelview;
ir->mask_keycode = 0x001F00;
ir->mask_keyup = 0x006000;
ir->polling = 50; // ms
break;
case BTTV_BOARD_NEBULA_DIGITV:
ir_codes = ir_codes_nebula;
btv->custom_irq = bttv_rc5_irq;
ir->rc5_gpio = 1;
break;
case BTTV_BOARD_MACHTV_MAGICTV:
ir_codes = ir_codes_apac_viewcomp;
ir->mask_keycode = 0x001F00;
ir->mask_keyup = 0x004000;
ir->polling = 50; /* ms */
break;
}
if (NULL == ir_codes) {
dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
err = -ENODEV;
goto err_out_free;
}
if (ir->rc5_gpio) {
u32 gpio;
/* enable remote irq */
bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
gpio = bttv_gpio_read(&btv->c);
bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
bttv_gpio_write(&btv->c, gpio | (1 << 4));
} else {
/* init hardware-specific stuff */
bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
}
/* init input device */
ir->dev = input_dev;
snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
btv->c.type);
snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
pci_name(btv->c.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 (btv->c.pci->subsystem_vendor) {
input_dev->id.vendor = btv->c.pci->subsystem_vendor;
input_dev->id.product = btv->c.pci->subsystem_device;
} else {
input_dev->id.vendor = btv->c.pci->vendor;
input_dev->id.product = btv->c.pci->device;
}
input_dev->dev.parent = &btv->c.pci->dev;
btv->remote = ir;
bttv_ir_start(btv, ir);
/* all done */
err = input_register_device(btv->remote->dev);
if (err)
goto err_out_stop;
/* the remote isn't as bouncy as a keyboard */
ir->dev->rep[REP_DELAY] = repeat_delay;
ir->dev->rep[REP_PERIOD] = repeat_period;
return 0;
err_out_stop:
bttv_ir_stop(btv);
btv->remote = NULL;
err_out_free:
input_free_device(input_dev);
kfree(ir);
return err;
}
void bttv_input_fini(struct bttv *btv)
{
if (btv->remote == NULL)
return;
bttv_ir_stop(btv);
input_unregister_device(btv->remote->dev);
kfree(btv->remote);
btv->remote = NULL;
}
/*
* Local variables:
* c-basic-offset: 8
* End:
*/
