c0c4682627
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
500 lines
12 KiB
C
500 lines
12 KiB
C
/*
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*
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* Copyright (c) 2003 Gerd Knorr
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* Copyright (c) 2003 Pavel Machek
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/module.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/interrupt.h>
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#include <linux/input.h>
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#include <linux/slab.h>
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#include "bttv.h"
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#include "bttvp.h"
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static int ir_debug;
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module_param(ir_debug, int, 0644);
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static int repeat_delay = 500;
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module_param(repeat_delay, int, 0644);
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static int repeat_period = 33;
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module_param(repeat_period, int, 0644);
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static int ir_rc5_remote_gap = 885;
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module_param(ir_rc5_remote_gap, int, 0644);
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static int ir_rc5_key_timeout = 200;
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module_param(ir_rc5_key_timeout, int, 0644);
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#undef dprintk
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#define dprintk(arg...) do { \
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if (ir_debug >= 1) \
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printk(arg); \
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} while (0)
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#define DEVNAME "bttv-input"
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#define MODULE_NAME "bttv"
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/* ---------------------------------------------------------------------- */
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static void ir_handle_key(struct bttv *btv)
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{
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struct card_ir *ir = btv->remote;
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u32 gpio,data;
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/* read gpio value */
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gpio = bttv_gpio_read(&btv->c);
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if (ir->polling) {
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if (ir->last_gpio == gpio)
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return;
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ir->last_gpio = gpio;
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}
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/* extract data */
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data = ir_extract_bits(gpio, ir->mask_keycode);
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dprintk(KERN_INFO DEVNAME ": irq gpio=0x%x code=%d | %s%s%s\n",
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gpio, data,
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ir->polling ? "poll" : "irq",
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(gpio & ir->mask_keydown) ? " down" : "",
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(gpio & ir->mask_keyup) ? " up" : "");
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if ((ir->mask_keydown && (0 != (gpio & ir->mask_keydown))) ||
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(ir->mask_keyup && (0 == (gpio & ir->mask_keyup)))) {
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ir_input_keydown(ir->dev, &ir->ir, data);
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} else {
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/* HACK: Probably, ir->mask_keydown is missing
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for this board */
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if (btv->c.type == BTTV_BOARD_WINFAST2000)
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ir_input_keydown(ir->dev, &ir->ir, data);
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ir_input_nokey(ir->dev,&ir->ir);
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}
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}
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static void ir_enltv_handle_key(struct bttv *btv)
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{
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struct card_ir *ir = btv->remote;
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u32 gpio, data, keyup;
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/* read gpio value */
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gpio = bttv_gpio_read(&btv->c);
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/* extract data */
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data = ir_extract_bits(gpio, ir->mask_keycode);
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/* Check if it is keyup */
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keyup = (gpio & ir->mask_keyup) ? 1 << 31 : 0;
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if ((ir->last_gpio & 0x7f) != data) {
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dprintk(KERN_INFO DEVNAME ": gpio=0x%x code=%d | %s\n",
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gpio, data,
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(gpio & ir->mask_keyup) ? " up" : "up/down");
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ir_input_keydown(ir->dev, &ir->ir, data);
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if (keyup)
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ir_input_nokey(ir->dev, &ir->ir);
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} else {
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if ((ir->last_gpio & 1 << 31) == keyup)
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return;
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dprintk(KERN_INFO DEVNAME ":(cnt) gpio=0x%x code=%d | %s\n",
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gpio, data,
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(gpio & ir->mask_keyup) ? " up" : "down");
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if (keyup)
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ir_input_nokey(ir->dev, &ir->ir);
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else
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ir_input_keydown(ir->dev, &ir->ir, data);
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}
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ir->last_gpio = data | keyup;
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}
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void bttv_input_irq(struct bttv *btv)
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{
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struct card_ir *ir = btv->remote;
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if (!ir->polling)
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ir_handle_key(btv);
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}
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static void bttv_input_timer(unsigned long data)
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{
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struct bttv *btv = (struct bttv*)data;
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struct card_ir *ir = btv->remote;
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if (btv->c.type == BTTV_BOARD_ENLTV_FM_2)
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ir_enltv_handle_key(btv);
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else
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ir_handle_key(btv);
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mod_timer(&ir->timer, jiffies + msecs_to_jiffies(ir->polling));
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}
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/* ---------------------------------------------------------------*/
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static int bttv_rc5_irq(struct bttv *btv)
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{
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struct card_ir *ir = btv->remote;
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struct timeval tv;
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u32 gpio;
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u32 gap;
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unsigned long current_jiffies;
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/* read gpio port */
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gpio = bttv_gpio_read(&btv->c);
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/* remote IRQ? */
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if (!(gpio & 0x20))
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return 0;
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/* get time of bit */
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current_jiffies = jiffies;
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do_gettimeofday(&tv);
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/* avoid overflow with gap >1s */
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if (tv.tv_sec - ir->base_time.tv_sec > 1) {
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gap = 200000;
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} else {
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gap = 1000000 * (tv.tv_sec - ir->base_time.tv_sec) +
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tv.tv_usec - ir->base_time.tv_usec;
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}
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/* active code => add bit */
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if (ir->active) {
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/* only if in the code (otherwise spurious IRQ or timer
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late) */
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if (ir->last_bit < 28) {
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ir->last_bit = (gap - ir_rc5_remote_gap / 2) /
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ir_rc5_remote_gap;
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ir->code |= 1 << ir->last_bit;
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}
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/* starting new code */
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} else {
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ir->active = 1;
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ir->code = 0;
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ir->base_time = tv;
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ir->last_bit = 0;
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mod_timer(&ir->timer_end,
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current_jiffies + msecs_to_jiffies(30));
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}
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/* toggle GPIO pin 4 to reset the irq */
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bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
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bttv_gpio_write(&btv->c, gpio | (1 << 4));
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return 1;
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}
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/* ---------------------------------------------------------------------- */
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static void bttv_ir_start(struct bttv *btv, struct card_ir *ir)
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{
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if (ir->polling) {
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setup_timer(&ir->timer, bttv_input_timer, (unsigned long)btv);
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ir->timer.expires = jiffies + msecs_to_jiffies(1000);
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add_timer(&ir->timer);
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} else if (ir->rc5_gpio) {
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/* set timer_end for code completion */
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init_timer(&ir->timer_end);
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ir->timer_end.function = ir_rc5_timer_end;
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ir->timer_end.data = (unsigned long)ir;
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init_timer(&ir->timer_keyup);
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ir->timer_keyup.function = ir_rc5_timer_keyup;
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ir->timer_keyup.data = (unsigned long)ir;
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ir->shift_by = 1;
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ir->start = 3;
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ir->addr = 0x0;
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ir->rc5_key_timeout = ir_rc5_key_timeout;
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ir->rc5_remote_gap = ir_rc5_remote_gap;
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}
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}
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static void bttv_ir_stop(struct bttv *btv)
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{
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if (btv->remote->polling) {
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del_timer_sync(&btv->remote->timer);
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flush_scheduled_work();
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}
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if (btv->remote->rc5_gpio) {
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u32 gpio;
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del_timer_sync(&btv->remote->timer_end);
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flush_scheduled_work();
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gpio = bttv_gpio_read(&btv->c);
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bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
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}
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}
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/*
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* Get_key functions used by I2C remotes
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*/
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static int get_key_pv951(struct IR_i2c *ir, u32 *ir_key, u32 *ir_raw)
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{
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unsigned char b;
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/* poll IR chip */
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if (1 != i2c_master_recv(ir->c, &b, 1)) {
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dprintk(KERN_INFO DEVNAME ": read error\n");
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return -EIO;
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}
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/* ignore 0xaa */
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if (b==0xaa)
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return 0;
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dprintk(KERN_INFO DEVNAME ": key %02x\n", b);
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*ir_key = b;
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*ir_raw = b;
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return 1;
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}
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/* Instantiate the I2C IR receiver device, if present */
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void __devinit init_bttv_i2c_ir(struct bttv *btv)
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{
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const unsigned short addr_list[] = {
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0x1a, 0x18, 0x64, 0x30, 0x71,
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I2C_CLIENT_END
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};
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struct i2c_board_info info;
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if (0 != btv->i2c_rc)
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return;
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memset(&info, 0, sizeof(struct i2c_board_info));
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memset(&btv->init_data, 0, sizeof(btv->init_data));
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strlcpy(info.type, "ir_video", I2C_NAME_SIZE);
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switch (btv->c.type) {
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case BTTV_BOARD_PV951:
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btv->init_data.name = "PV951";
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btv->init_data.get_key = get_key_pv951;
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btv->init_data.ir_codes = RC_MAP_PV951;
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btv->init_data.type = IR_TYPE_OTHER;
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info.addr = 0x4b;
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break;
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default:
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/*
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* The external IR receiver is at i2c address 0x34 (0x35 for
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* reads). Future Hauppauge cards will have an internal
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* receiver at 0x30 (0x31 for reads). In theory, both can be
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* fitted, and Hauppauge suggest an external overrides an
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* internal.
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* That's why we probe 0x1a (~0x34) first. CB
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*/
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i2c_new_probed_device(&btv->c.i2c_adap, &info, addr_list, NULL);
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return;
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}
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if (btv->init_data.name)
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info.platform_data = &btv->init_data;
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i2c_new_device(&btv->c.i2c_adap, &info);
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return;
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}
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int __devexit fini_bttv_i2c(struct bttv *btv)
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{
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if (0 != btv->i2c_rc)
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return 0;
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return i2c_del_adapter(&btv->c.i2c_adap);
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}
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int bttv_input_init(struct bttv *btv)
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{
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struct card_ir *ir;
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char *ir_codes = NULL;
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struct input_dev *input_dev;
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u64 ir_type = IR_TYPE_OTHER;
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int err = -ENOMEM;
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if (!btv->has_remote)
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return -ENODEV;
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ir = kzalloc(sizeof(*ir),GFP_KERNEL);
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input_dev = input_allocate_device();
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if (!ir || !input_dev)
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goto err_out_free;
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/* detect & configure */
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switch (btv->c.type) {
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case BTTV_BOARD_AVERMEDIA:
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case BTTV_BOARD_AVPHONE98:
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case BTTV_BOARD_AVERMEDIA98:
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ir_codes = RC_MAP_AVERMEDIA;
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ir->mask_keycode = 0xf88000;
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ir->mask_keydown = 0x010000;
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ir->polling = 50; // ms
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break;
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case BTTV_BOARD_AVDVBT_761:
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case BTTV_BOARD_AVDVBT_771:
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ir_codes = RC_MAP_AVERMEDIA_DVBT;
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ir->mask_keycode = 0x0f00c0;
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ir->mask_keydown = 0x000020;
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ir->polling = 50; // ms
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break;
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case BTTV_BOARD_PXELVWPLTVPAK:
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ir_codes = RC_MAP_PIXELVIEW;
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ir->mask_keycode = 0x003e00;
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ir->mask_keyup = 0x010000;
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ir->polling = 50; // ms
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break;
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case BTTV_BOARD_PV_M4900:
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case BTTV_BOARD_PV_BT878P_9B:
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case BTTV_BOARD_PV_BT878P_PLUS:
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ir_codes = RC_MAP_PIXELVIEW;
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ir->mask_keycode = 0x001f00;
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ir->mask_keyup = 0x008000;
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ir->polling = 50; // ms
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break;
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case BTTV_BOARD_WINFAST2000:
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ir_codes = RC_MAP_WINFAST;
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ir->mask_keycode = 0x1f8;
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break;
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case BTTV_BOARD_MAGICTVIEW061:
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case BTTV_BOARD_MAGICTVIEW063:
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ir_codes = RC_MAP_WINFAST;
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ir->mask_keycode = 0x0008e000;
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ir->mask_keydown = 0x00200000;
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break;
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case BTTV_BOARD_APAC_VIEWCOMP:
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ir_codes = RC_MAP_APAC_VIEWCOMP;
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ir->mask_keycode = 0x001f00;
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ir->mask_keyup = 0x008000;
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ir->polling = 50; // ms
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break;
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case BTTV_BOARD_ASKEY_CPH03X:
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case BTTV_BOARD_CONCEPTRONIC_CTVFMI2:
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case BTTV_BOARD_CONTVFMI:
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ir_codes = RC_MAP_PIXELVIEW;
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ir->mask_keycode = 0x001F00;
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ir->mask_keyup = 0x006000;
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ir->polling = 50; // ms
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break;
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case BTTV_BOARD_NEBULA_DIGITV:
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ir_codes = RC_MAP_NEBULA;
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btv->custom_irq = bttv_rc5_irq;
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ir->rc5_gpio = 1;
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break;
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case BTTV_BOARD_MACHTV_MAGICTV:
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ir_codes = RC_MAP_APAC_VIEWCOMP;
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ir->mask_keycode = 0x001F00;
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ir->mask_keyup = 0x004000;
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ir->polling = 50; /* ms */
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break;
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case BTTV_BOARD_KOZUMI_KTV_01C:
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ir_codes = RC_MAP_PCTV_SEDNA;
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ir->mask_keycode = 0x001f00;
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ir->mask_keyup = 0x006000;
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ir->polling = 50; /* ms */
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break;
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case BTTV_BOARD_ENLTV_FM_2:
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ir_codes = RC_MAP_ENCORE_ENLTV2;
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ir->mask_keycode = 0x00fd00;
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ir->mask_keyup = 0x000080;
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ir->polling = 1; /* ms */
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ir->last_gpio = ir_extract_bits(bttv_gpio_read(&btv->c),
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ir->mask_keycode);
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break;
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}
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if (NULL == ir_codes) {
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dprintk(KERN_INFO "Ooops: IR config error [card=%d]\n", btv->c.type);
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err = -ENODEV;
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goto err_out_free;
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}
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if (ir->rc5_gpio) {
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u32 gpio;
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/* enable remote irq */
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bttv_gpio_inout(&btv->c, (1 << 4), 1 << 4);
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gpio = bttv_gpio_read(&btv->c);
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bttv_gpio_write(&btv->c, gpio & ~(1 << 4));
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bttv_gpio_write(&btv->c, gpio | (1 << 4));
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} else {
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/* init hardware-specific stuff */
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bttv_gpio_inout(&btv->c, ir->mask_keycode | ir->mask_keydown, 0);
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}
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/* init input device */
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ir->dev = input_dev;
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snprintf(ir->name, sizeof(ir->name), "bttv IR (card=%d)",
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btv->c.type);
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snprintf(ir->phys, sizeof(ir->phys), "pci-%s/ir0",
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pci_name(btv->c.pci));
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err = ir_input_init(input_dev, &ir->ir, ir_type);
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if (err < 0)
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goto err_out_free;
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input_dev->name = ir->name;
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input_dev->phys = ir->phys;
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input_dev->id.bustype = BUS_PCI;
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input_dev->id.version = 1;
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if (btv->c.pci->subsystem_vendor) {
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input_dev->id.vendor = btv->c.pci->subsystem_vendor;
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input_dev->id.product = btv->c.pci->subsystem_device;
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} else {
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input_dev->id.vendor = btv->c.pci->vendor;
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input_dev->id.product = btv->c.pci->device;
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}
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input_dev->dev.parent = &btv->c.pci->dev;
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btv->remote = ir;
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bttv_ir_start(btv, ir);
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/* all done */
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err = ir_input_register(btv->remote->dev, ir_codes, NULL, MODULE_NAME);
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if (err)
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goto err_out_stop;
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/* the remote isn't as bouncy as a keyboard */
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ir->dev->rep[REP_DELAY] = repeat_delay;
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ir->dev->rep[REP_PERIOD] = repeat_period;
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return 0;
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err_out_stop:
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bttv_ir_stop(btv);
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btv->remote = NULL;
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err_out_free:
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kfree(ir);
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return err;
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}
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void bttv_input_fini(struct bttv *btv)
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{
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if (btv->remote == NULL)
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return;
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bttv_ir_stop(btv);
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ir_input_unregister(btv->remote->dev);
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kfree(btv->remote);
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btv->remote = NULL;
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}
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