[net-next-2.6.git] / drivers / media / video / cx23885 / cx23885-ir.c

/*
 *  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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 *  02110-1301, USA.
 */

#include <media/v4l2-device.h>

#include "cx23885.h"
#include "cx23885-input.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->ir_input)
		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;

}

/* 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);
	schedule_work(&dev->ir_rx_work);
}

/* 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);
	schedule_work(&dev->ir_tx_work);
}
Commit	Line	Data
f59ad611 AW	1	/*
	2	* Driver for the Conexant CX23885/7/8 PCIe bridge
	3	*
	4	* Infrared device support routines - non-input, non-vl42_subdev routines
	5	*
6afdeaf8	6	* Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net>
f59ad611 AW	7	*
	8	* This program is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU General Public License
	10	* as published by the Free Software Foundation; either version 2
	11	* of the License, or (at your option) any later version.
	12	*
	13	* This program is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	16	* GNU General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU General Public License
	19	* along with this program; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	21	* 02110-1301, USA.
	22	*/
	23
	24	#include <media/v4l2-device.h>
	25
	26	#include "cx23885.h"
dbda8f70	27	#include "cx23885-input.h"
f59ad611 AW	28
	29	#define CX23885_IR_RX_FIFO_SERVICE_REQ 0
	30	#define CX23885_IR_RX_END_OF_RX_DETECTED 1
	31	#define CX23885_IR_RX_HW_FIFO_OVERRUN 2
	32	#define CX23885_IR_RX_SW_FIFO_OVERRUN 3
	33
	34	#define CX23885_IR_TX_FIFO_SERVICE_REQ 0
	35
	36
	37	void cx23885_ir_rx_work_handler(struct work_struct *work)
	38	{
	39	struct cx23885_dev *dev =
	40	container_of(work, struct cx23885_dev, ir_rx_work);
	41	u32 events = 0;
	42	unsigned long *notifications = &dev->ir_rx_notifications;
	43
	44	if (test_and_clear_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications))
	45	events \|= V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN;
	46	if (test_and_clear_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications))
	47	events \|= V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN;
	48	if (test_and_clear_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications))
	49	events \|= V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED;
	50	if (test_and_clear_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications))
	51	events \|= V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ;
	52
	53	if (events == 0)
	54	return;
dbda8f70 AW	55
	56	if (dev->ir_input)
	57	cx23885_input_rx_work_handler(dev, events);
f59ad611 AW	58	}
	59
	60	void cx23885_ir_tx_work_handler(struct work_struct *work)
	61	{
	62	struct cx23885_dev *dev =
	63	container_of(work, struct cx23885_dev, ir_tx_work);
	64	u32 events = 0;
	65	unsigned long *notifications = &dev->ir_tx_notifications;
	66
	67	if (test_and_clear_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications))
	68	events \|= V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ;
	69
	70	if (events == 0)
	71	return;
	72
	73	}
	74
	75	/* Called in an IRQ context */
	76	void cx23885_ir_rx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events)
	77	{
	78	struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev);
	79	unsigned long *notifications = &dev->ir_rx_notifications;
	80
	81	if (events & V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ)
	82	set_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications);
	83	if (events & V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED)
	84	set_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications);
	85	if (events & V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN)
	86	set_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications);
	87	if (events & V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN)
	88	set_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications);
	89	schedule_work(&dev->ir_rx_work);
	90	}
	91
	92	/* Called in an IRQ context */
	93	void cx23885_ir_tx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events)
	94	{
	95	struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev);
	96	unsigned long *notifications = &dev->ir_tx_notifications;
	97
	98	if (events & V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ)
	99	set_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications);
	100	schedule_work(&dev->ir_tx_work);
	101	}