2 * Driver for the Conexant CX23885/7/8 PCIe bridge
4 * Infrared device support routines - non-input, non-vl42_subdev routines
6 * Copyright (C) 2009 Andy Walls <awalls@radix.net>
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.
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.
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
24 #include <media/v4l2-device.h>
27 #include "cx23885-input.h"
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
34 #define CX23885_IR_TX_FIFO_SERVICE_REQ 0
37 void cx23885_ir_rx_work_handler(struct work_struct
*work
)
39 struct cx23885_dev
*dev
=
40 container_of(work
, struct cx23885_dev
, ir_rx_work
);
42 unsigned long *notifications
= &dev
->ir_rx_notifications
;
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
;
57 cx23885_input_rx_work_handler(dev
, events
);
60 void cx23885_ir_tx_work_handler(struct work_struct
*work
)
62 struct cx23885_dev
*dev
=
63 container_of(work
, struct cx23885_dev
, ir_tx_work
);
65 unsigned long *notifications
= &dev
->ir_tx_notifications
;
67 if (test_and_clear_bit(CX23885_IR_TX_FIFO_SERVICE_REQ
, notifications
))
68 events
|= V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ
;
75 /* Called in an IRQ context */
76 void cx23885_ir_rx_v4l2_dev_notify(struct v4l2_subdev
*sd
, u32 events
)
78 struct cx23885_dev
*dev
= to_cx23885(sd
->v4l2_dev
);
79 unsigned long *notifications
= &dev
->ir_rx_notifications
;
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
);
92 /* Called in an IRQ context */
93 void cx23885_ir_tx_v4l2_dev_notify(struct v4l2_subdev
*sd
, u32 events
)
95 struct cx23885_dev
*dev
= to_cx23885(sd
->v4l2_dev
);
96 unsigned long *notifications
= &dev
->ir_tx_notifications
;
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
);