114 lines
3.7 KiB
C
Executable file
114 lines
3.7 KiB
C
Executable file
/*
|
|
* Driver for the Conexant CX23885/7/8 PCIe bridge
|
|
*
|
|
* Infrared device support routines - non-input, non-vl42_subdev routines
|
|
*
|
|
* Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "cx23885.h"
|
|
#include "cx23885-ir.h"
|
|
#include "cx23885-input.h"
|
|
|
|
#include <media/v4l2-device.h>
|
|
|
|
#define CX23885_IR_RX_FIFO_SERVICE_REQ 0
|
|
#define CX23885_IR_RX_END_OF_RX_DETECTED 1
|
|
#define CX23885_IR_RX_HW_FIFO_OVERRUN 2
|
|
#define CX23885_IR_RX_SW_FIFO_OVERRUN 3
|
|
|
|
#define CX23885_IR_TX_FIFO_SERVICE_REQ 0
|
|
|
|
|
|
void cx23885_ir_rx_work_handler(struct work_struct *work)
|
|
{
|
|
struct cx23885_dev *dev =
|
|
container_of(work, struct cx23885_dev, ir_rx_work);
|
|
u32 events = 0;
|
|
unsigned long *notifications = &dev->ir_rx_notifications;
|
|
|
|
if (test_and_clear_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications))
|
|
events |= V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN;
|
|
if (test_and_clear_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications))
|
|
events |= V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN;
|
|
if (test_and_clear_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications))
|
|
events |= V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED;
|
|
if (test_and_clear_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications))
|
|
events |= V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ;
|
|
|
|
if (events == 0)
|
|
return;
|
|
|
|
if (dev->kernel_ir)
|
|
cx23885_input_rx_work_handler(dev, events);
|
|
}
|
|
|
|
void cx23885_ir_tx_work_handler(struct work_struct *work)
|
|
{
|
|
struct cx23885_dev *dev =
|
|
container_of(work, struct cx23885_dev, ir_tx_work);
|
|
u32 events = 0;
|
|
unsigned long *notifications = &dev->ir_tx_notifications;
|
|
|
|
if (test_and_clear_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications))
|
|
events |= V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ;
|
|
|
|
if (events == 0)
|
|
return;
|
|
|
|
}
|
|
|
|
/* Possibly called in an IRQ context */
|
|
void cx23885_ir_rx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events)
|
|
{
|
|
struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev);
|
|
unsigned long *notifications = &dev->ir_rx_notifications;
|
|
|
|
if (events & V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ)
|
|
set_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications);
|
|
if (events & V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED)
|
|
set_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications);
|
|
if (events & V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN)
|
|
set_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications);
|
|
if (events & V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN)
|
|
set_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications);
|
|
|
|
/*
|
|
* For the integrated AV core, we are already in a workqueue context.
|
|
* For the CX23888 integrated IR, we are in an interrupt context.
|
|
*/
|
|
if (sd == dev->sd_cx25840)
|
|
cx23885_ir_rx_work_handler(&dev->ir_rx_work);
|
|
else
|
|
schedule_work(&dev->ir_rx_work);
|
|
}
|
|
|
|
/* Possibly called in an IRQ context */
|
|
void cx23885_ir_tx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events)
|
|
{
|
|
struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev);
|
|
unsigned long *notifications = &dev->ir_tx_notifications;
|
|
|
|
if (events & V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ)
|
|
set_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications);
|
|
|
|
/*
|
|
* For the integrated AV core, we are already in a workqueue context.
|
|
* For the CX23888 integrated IR, we are in an interrupt context.
|
|
*/
|
|
if (sd == dev->sd_cx25840)
|
|
cx23885_ir_tx_work_handler(&dev->ir_tx_work);
|
|
else
|
|
schedule_work(&dev->ir_tx_work);
|
|
}
|