/**
* ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing
* @dev: the struct rc_dev device descriptor
* @type: the type of the event that has occurred
*
* This routine (which may be called from an interrupt context) works
* in similar manner to ir_raw_event_store_edge.
* This routine is intended for devices with limited internal buffer
* It automerges samples of same type, and handles timeouts. Returns non-zero
* if the event was added, and zero if the event was ignored due to idle
* processing.
*/
int ir_raw_event_store_with_filter(struct rc_dev *dev, struct ir_raw_event *ev)
{
if (!dev->raw)
return -EINVAL;
/* Ignore spaces in idle mode */
if (dev->idle && !ev->pulse)
return 0;
else if (dev->idle)
ir_raw_event_set_idle(dev, false);
if (!dev->raw->this_ev.duration)
dev->raw->this_ev = *ev;
else if (ev->pulse == dev->raw->this_ev.pulse)
dev->raw->this_ev.duration += ev->duration;
else {
ir_raw_event_store(dev, &dev->raw->this_ev);
dev->raw->this_ev = *ev;
}
/* Enter idle mode if nessesary */
if (!ev->pulse && dev->timeout &&
dev->raw->this_ev.duration >= dev->timeout)
ir_raw_event_set_idle(dev, true);
return 1;
}
/**
* ir_raw_event_store_with_filter() - pass next pulse/space to decoders with some processing
* @input_dev: the struct input_dev device descriptor
* @type: the type of the event that has occurred
*
* This routine (which may be called from an interrupt context) works
* in similiar manner to ir_raw_event_store_edge.
* This routine is intended for devices with limited internal buffer
* It automerges samples of same type, and handles timeouts
*/
int ir_raw_event_store_with_filter(struct input_dev *input_dev,
struct ir_raw_event *ev)
{
struct ir_input_dev *ir = input_get_drvdata(input_dev);
struct ir_raw_event_ctrl *raw = ir->raw;
if (!raw || !ir->props)
return -EINVAL;
/* Ignore spaces in idle mode */
if (ir->idle && !ev->pulse)
return 0;
else if (ir->idle)
ir_raw_event_set_idle(input_dev, 0);
if (!raw->this_ev.duration) {
raw->this_ev = *ev;
} else if (ev->pulse == raw->this_ev.pulse) {
raw->this_ev.duration += ev->duration;
} else {
ir_raw_event_store(input_dev, &raw->this_ev);
raw->this_ev = *ev;
}
/* Enter idle mode if nessesary */
if (!ev->pulse && ir->props->timeout &&
raw->this_ev.duration >= ir->props->timeout)
ir_raw_event_set_idle(input_dev, 1);
return 0;
}
static irqreturn_t sunxi_ir_irq(int irqno, void *dev_id)
{
unsigned long status;
unsigned char dt;
unsigned int cnt, rc;
struct sunxi_ir *ir = dev_id;
DEFINE_IR_RAW_EVENT(rawir);
spin_lock(&ir->ir_lock);
status = readl(ir->base + SUNXI_IR_RXSTA_REG);
/* clean all pending statuses */
writel(status | REG_RXSTA_CLEARALL, ir->base + SUNXI_IR_RXSTA_REG);
if (status & (REG_RXINT_RAI_EN | REG_RXINT_RPEI_EN)) {
/* How many messages in fifo */
rc = REG_RXSTA_GET_AC(status);
/* Sanity check */
rc = rc > ir->fifo_size ? ir->fifo_size : rc;
/* If we have data */
for (cnt = 0; cnt < rc; cnt++) {
/* for each bit in fifo */
dt = readb(ir->base + SUNXI_IR_RXFIFO_REG);
rawir.pulse = (dt & 0x80) != 0;
rawir.duration = ((dt & 0x7f) + 1) * SUNXI_IR_SAMPLE;
ir_raw_event_store_with_filter(ir->rc, &rawir);
}
}
if (status & REG_RXINT_ROI_EN) {
ir_raw_event_reset(ir->rc);
} else if (status & REG_RXINT_RPEI_EN) {
ir_raw_event_set_idle(ir->rc, true);
ir_raw_event_handle(ir->rc);
}
spin_unlock(&ir->ir_lock);
return IRQ_HANDLED;
}
static int rtl2832u_rc_query(struct dvb_usb_device *d)
{
int ret, i, len;
struct rtl28xxu_priv *priv = d->priv;
struct ir_raw_event ev;
u8 buf[128];
static const struct rtl28xxu_reg_val_mask refresh_tab[] = {
{IR_RX_IF, 0x03, 0xff},
{IR_RX_BUF_CTRL, 0x80, 0xff},
{IR_RX_CTRL, 0x80, 0xff},
};
/* init remote controller */
if (!priv->rc_active) {
static const struct rtl28xxu_reg_val_mask init_tab[] = {
{SYS_DEMOD_CTL1, 0x00, 0x04},
{SYS_DEMOD_CTL1, 0x00, 0x08},
{USB_CTRL, 0x20, 0x20},
{SYS_GPIO_DIR, 0x00, 0x08},
{SYS_GPIO_OUT_EN, 0x08, 0x08},
{SYS_GPIO_OUT_VAL, 0x08, 0x08},
{IR_MAX_DURATION0, 0xd0, 0xff},
{IR_MAX_DURATION1, 0x07, 0xff},
{IR_IDLE_LEN0, 0xc0, 0xff},
{IR_IDLE_LEN1, 0x00, 0xff},
{IR_GLITCH_LEN, 0x03, 0xff},
{IR_RX_CLK, 0x09, 0xff},
{IR_RX_CFG, 0x1c, 0xff},
{IR_MAX_H_TOL_LEN, 0x1e, 0xff},
{IR_MAX_L_TOL_LEN, 0x1e, 0xff},
{IR_RX_CTRL, 0x80, 0xff},
};
for (i = 0; i < ARRAY_SIZE(init_tab); i++) {
ret = rtl28xx_wr_reg_mask(d, init_tab[i].reg,
init_tab[i].val, init_tab[i].mask);
if (ret)
goto err;
}
priv->rc_active = true;
}
ret = rtl28xx_rd_reg(d, IR_RX_IF, &buf[0]);
if (ret)
goto err;
if (buf[0] != 0x83)
goto exit;
ret = rtl28xx_rd_reg(d, IR_RX_BC, &buf[0]);
if (ret)
goto err;
len = buf[0];
/* read raw code from hw */
ret = rtl2831_rd_regs(d, IR_RX_BUF, buf, len);
if (ret)
goto err;
/* let hw receive new code */
for (i = 0; i < ARRAY_SIZE(refresh_tab); i++) {
ret = rtl28xx_wr_reg_mask(d, refresh_tab[i].reg,
refresh_tab[i].val, refresh_tab[i].mask);
if (ret)
goto err;
}
/* pass data to Kernel IR decoder */
init_ir_raw_event(&ev);
for (i = 0; i < len; i++) {
ev.pulse = buf[i] >> 7;
ev.duration = 50800 * (buf[i] & 0x7f);
ir_raw_event_store_with_filter(d->rc_dev, &ev);
}
/* 'flush' ir_raw_event_store_with_filter() */
ir_raw_event_set_idle(d->rc_dev, true);
ir_raw_event_handle(d->rc_dev);
exit:
return ret;
err:
dev_dbg(&d->udev->dev, "%s: failed=%d\n", __func__, ret);
return ret;
}
