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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 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>
*/
#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);
}
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