static int build_key(struct saa7134_dev *dev)
{
struct card_ir *ir = dev->remote;
u32 gpio, data;
/* here comes the additional handshake steps for some cards */
switch (dev->board) {
case SAA7134_BOARD_GOTVIEW_7135:
saa_setb(SAA7134_GPIO_GPSTATUS1, 0x80);
saa_clearb(SAA7134_GPIO_GPSTATUS1, 0x80);
break;
}
/* rising SAA7134_GPIO_GPRESCAN reads the status */
saa_clearb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
saa_setb(SAA7134_GPIO_GPMODE3,SAA7134_GPIO_GPRESCAN);
gpio = saa_readl(SAA7134_GPIO_GPSTATUS0 >> 2);
if (ir->polling) {
if (ir->last_gpio == gpio)
return 0;
ir->last_gpio = gpio;
}
data = ir_extract_bits(gpio, ir->mask_keycode);
dprintk("build_key gpio=0x%x mask=0x%x data=%d\n",
gpio, ir->mask_keycode, data);
switch (dev->board) {
case SAA7134_BOARD_KWORLD_PLUS_TV_ANALOG:
if (data == ir->mask_keycode)
ir_input_nokey(ir->dev, &ir->ir);
else
ir_input_keydown(ir->dev, &ir->ir, data);
return 0;
}
if (ir->polling) {
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);
} else {
ir_input_nokey(ir->dev, &ir->ir);
}
}
else { /* IRQ driven mode - handle key press and release in one go */
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);
ir_input_nokey(ir->dev, &ir->ir);
}
}
return 0;
}
static void ir_handle_key(struct bttv *btv)
{
struct bttv_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 {
ir_input_nokey(ir->dev,&ir->ir);
}
}
static void bttv_rc5_timer_keyup(unsigned long data)
{
struct bttv_ir *ir = (struct bttv_ir *)data;
dprintk(KERN_DEBUG "key released\n");
ir_input_nokey(ir->dev, &ir->ir);
}
void ir_rc5_timer_keyup(unsigned long data)
{
struct card_ir *ir = (struct card_ir *)data;
dprintk(1, "ir-common: key released\n");
ir_input_nokey(ir->dev, &ir->ir);
}
static void cx231xx_ir_handle_key(struct cx231xx_IR *ir)
{
int result;
int do_sendkey = 0;
struct cx231xx_ir_poll_result poll_result;
/* read the registers containing the IR status */
result = ir->get_key(ir, &poll_result);
if (result < 0) {
dprintk("ir->get_key() failed %d\n", result);
return;
}
dprintk("ir->get_key result tb=%02x rc=%02x lr=%02x data=%02x\n",
poll_result.toggle_bit, poll_result.read_count,
ir->last_readcount, poll_result.rc_data[0]);
if (ir->dev->chip_id == CHIP_ID_EM2874) {
/* The em2874 clears the readcount field every time the
register is read. The em2860/2880 datasheet says that it
is supposed to clear the readcount, but it doesn't. So with
the em2874, we are looking for a non-zero read count as
opposed to a readcount that is incrementing */
ir->last_readcount = 0;
}
if (poll_result.read_count == 0) {
/* The button has not been pressed since the last read */
} else if (ir->last_toggle != poll_result.toggle_bit) {
/* A button has been pressed */
dprintk("button has been pressed\n");
ir->last_toggle = poll_result.toggle_bit;
ir->repeat_interval = 0;
do_sendkey = 1;
} else if (poll_result.toggle_bit == ir->last_toggle &&
poll_result.read_count > 0 &&
poll_result.read_count != ir->last_readcount) {
/* The button is still being held down */
dprintk("button being held down\n");
/* Debouncer for first keypress */
if (ir->repeat_interval++ > 9) {
/* Start repeating after 1 second */
do_sendkey = 1;
}
}
if (do_sendkey) {
dprintk("sending keypress\n");
ir_input_keydown(ir->input, &ir->ir, poll_result.rc_data[0],
poll_result.rc_data[0]);
ir_input_nokey(ir->input, &ir->ir);
}
ir->last_readcount = poll_result.read_count;
return;
}
static void cx231xx_ir_handle_key(struct cx231xx_IR *ir)
{
int result;
int do_sendkey = 0;
struct cx231xx_ir_poll_result poll_result;
result = ir->get_key(ir, &poll_result);
if (result < 0) {
dprintk("ir->get_key() failed %d\n", result);
return;
}
dprintk("ir->get_key result tb=%02x rc=%02x lr=%02x data=%02x\n",
poll_result.toggle_bit, poll_result.read_count,
ir->last_readcount, poll_result.rc_data[0]);
if (ir->dev->chip_id == CHIP_ID_EM2874) {
ir->last_readcount = 0;
}
if (poll_result.read_count == 0) {
} else if (ir->last_toggle != poll_result.toggle_bit) {
dprintk("button has been pressed\n");
ir->last_toggle = poll_result.toggle_bit;
ir->repeat_interval = 0;
do_sendkey = 1;
} else if (poll_result.toggle_bit == ir->last_toggle &&
poll_result.read_count > 0 &&
poll_result.read_count != ir->last_readcount) {
dprintk("button being held down\n");
if (ir->repeat_interval++ > 9) {
do_sendkey = 1;
}
}
if (do_sendkey) {
dprintk("sending keypress\n");
ir_input_keydown(ir->input, &ir->ir, poll_result.rc_data[0],
poll_result.rc_data[0]);
ir_input_nokey(ir->input, &ir->ir);
}
ir->last_readcount = poll_result.read_count;
return;
}
static void ir_enltv_handle_key(struct bttv *btv)
{
struct card_ir *ir = btv->remote;
u32 gpio, data, keyup;
gpio = bttv_gpio_read(&btv->c);
data = ir_extract_bits(gpio, ir->mask_keycode);
keyup = (gpio & ir->mask_keyup) ? 1 << 31 : 0;
if ((ir->last_gpio & 0x7f) != data) {
dprintk(KERN_INFO DEVNAME ": gpio=0x%x code=%d | %s\n",
gpio, data,
(gpio & ir->mask_keyup) ? " up" : "up/down");
ir_input_keydown(ir->dev, &ir->ir, data, data);
if (keyup)
ir_input_nokey(ir->dev, &ir->ir);
} else {
if ((ir->last_gpio & 1 << 31) == keyup)
return;
dprintk(KERN_INFO DEVNAME ":(cnt) gpio=0x%x code=%d | %s\n",
gpio, data,
(gpio & ir->mask_keyup) ? " up" : "down");
if (keyup)
ir_input_nokey(ir->dev, &ir->ir);
else
ir_input_keydown(ir->dev, &ir->ir, data, data);
}
ir->last_gpio = data | keyup;
}
static void cx23885_input_process_raw_rc5(struct cx23885_dev *dev)
{
struct card_ir *ir_input = dev->ir_input;
unsigned int code, command;
u32 rc5;
/* Ignore codes that are too short to be valid RC-5 */
if (ir_input->last_bit < (RC5_HALF_BITS - 1))
return;
/* The library has the manchester coding backwards; XOR to adapt. */
code = (ir_input->code & RC5_HALF_BITS_MASK) ^ RC5_HALF_BITS_MASK;
rc5 = ir_rc5_decode(code);
switch (RC5_START(rc5)) {
case RC5_START_BITS_NORMAL:
break;
case RC5_START_BITS_EXTENDED:
/* Don't allow if the remote only emits standard commands */
if (ir_input->start == RC5_START_BITS_NORMAL)
return;
break;
default:
return;
}
if (ir_input->addr != RC5_ADDR(rc5))
return;
/* Don't generate a keypress for RC-5 auto-repeated keypresses */
command = rc5_command(rc5);
if (RC5_TOGGLE(rc5) != RC5_TOGGLE(ir_input->last_rc5) ||
command != rc5_command(ir_input->last_rc5) ||
/* Catch T == 0, CMD == 0 (e.g. '0') as first keypress after init */
RC5_START(ir_input->last_rc5) == 0) {
/* This keypress is differnet: not an auto repeat */
ir_input_nokey(ir_input->dev, &ir_input->ir);
ir_input_keydown(ir_input->dev, &ir_input->ir, command);
}
ir_input->last_rc5 = rc5;
/* Schedule when we should do the key up event: ir_input_nokey() */
mod_timer(&ir_input->timer_keyup,
jiffies + msecs_to_jiffies(ir_input->rc5_key_timeout));
}
static void tm6000_ir_handle_key(struct tm6000_IR *ir)
{
int result;
struct tm6000_ir_poll_result poll_result;
/* read the registers containing the IR status */
result = ir->get_key(ir, &poll_result);
if (result < 0) {
printk(KERN_INFO "ir->get_key() failed %d\n", result);
return;
}
dprintk("ir->get_key result data=%04x\n", poll_result.rc_data);
if (ir->key) {
ir_input_keydown(ir->input->input_dev, &ir->ir,
(u32)poll_result.rc_data);
ir_input_nokey(ir->input->input_dev, &ir->ir);
ir->key = 0;
}
return;
}
static void bttv_rc5_timer_end(unsigned long data)
{
struct bttv_ir *ir = (struct bttv_ir *)data;
struct timeval tv;
unsigned long current_jiffies, timeout;
u32 gap;
/* get time */
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;
}
/* Allow some timmer jitter (RC5 is ~24ms anyway so this is ok) */
if (gap < 28000) {
dprintk(KERN_WARNING "spurious timer_end\n");
return;
}
ir->active = 0;
if (ir->last_bit < 20) {
/* ignore spurious codes (caused by light/other remotes) */
dprintk(KERN_WARNING "short code: %x\n", ir->code);
} else {
u32 rc5 = rc5_decode(ir->code);
/* two start bits? */
if (RC5_START(rc5) != 3) {
dprintk(KERN_WARNING "rc5 start bits invalid: %u\n", RC5_START(rc5));
/* right address? */
} else if (RC5_ADDR(rc5) == 0x0) {
u32 toggle = RC5_TOGGLE(rc5);
u32 instr = RC5_INSTR(rc5);
/* Good code, decide if repeat/repress */
if (toggle != RC5_TOGGLE(ir->last_rc5) ||
instr != RC5_INSTR(ir->last_rc5)) {
dprintk(KERN_WARNING "instruction %x, toggle %x\n", instr,
toggle);
ir_input_nokey(ir->dev, &ir->ir);
ir_input_keydown(ir->dev, &ir->ir, instr,
instr);
}
/* Set/reset key-up timer */
timeout = current_jiffies + (500 + rc5_key_timeout
* HZ) / 1000;
mod_timer(&ir->timer_keyup, timeout);
/* Save code for repeat test */
ir->last_rc5 = rc5;
}
}
}
