diff options
| author | Andy Walls <awalls@radix.net> | 2009-09-27 18:51:50 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 15:40:20 -0500 |
| commit | f59ad611acccd4057b8e685c7fd5532ab1a17f66 (patch) | |
| tree | 9c48a478ddc9a9f69c64c9e42f3db1f202970b78 /drivers/media/video/cx23885/cx23885-ir.c | |
| parent | 1a0b9d89c62ddf0aed12798686fe452e7e97de42 (diff) | |
V4L/DVB (13098): cx23885: Add integrated IR subdevice interrupt and notification handling
Add integrated IR subdevice interrupt and notification handling. This is in
preparation of input keypress handling changes for the cx23885 module.
Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx23885/cx23885-ir.c')
| -rw-r--r-- | drivers/media/video/cx23885/cx23885-ir.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/drivers/media/video/cx23885/cx23885-ir.c b/drivers/media/video/cx23885/cx23885-ir.c new file mode 100644 index 000000000000..e84f90c75bf1 --- /dev/null +++ b/drivers/media/video/cx23885/cx23885-ir.c | |||
| @@ -0,0 +1,97 @@ | |||
| 1 | /* | ||
| 2 | * Driver for the Conexant CX23885/7/8 PCIe bridge | ||
| 3 | * | ||
| 4 | * Infrared device support routines - non-input, non-vl42_subdev routines | ||
| 5 | * | ||
| 6 | * Copyright (C) 2009 Andy Walls <awalls@radix.net> | ||
| 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" | ||
| 27 | |||
| 28 | #define CX23885_IR_RX_FIFO_SERVICE_REQ 0 | ||
| 29 | #define CX23885_IR_RX_END_OF_RX_DETECTED 1 | ||
| 30 | #define CX23885_IR_RX_HW_FIFO_OVERRUN 2 | ||
| 31 | #define CX23885_IR_RX_SW_FIFO_OVERRUN 3 | ||
| 32 | |||
| 33 | #define CX23885_IR_TX_FIFO_SERVICE_REQ 0 | ||
| 34 | |||
| 35 | |||
| 36 | void cx23885_ir_rx_work_handler(struct work_struct *work) | ||
| 37 | { | ||
| 38 | struct cx23885_dev *dev = | ||
| 39 | container_of(work, struct cx23885_dev, ir_rx_work); | ||
| 40 | u32 events = 0; | ||
| 41 | unsigned long *notifications = &dev->ir_rx_notifications; | ||
| 42 | |||
| 43 | if (test_and_clear_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications)) | ||
| 44 | events |= V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN; | ||
| 45 | if (test_and_clear_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications)) | ||
| 46 | events |= V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN; | ||
| 47 | if (test_and_clear_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications)) | ||
| 48 | events |= V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED; | ||
| 49 | if (test_and_clear_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications)) | ||
| 50 | events |= V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ; | ||
| 51 | |||
| 52 | if (events == 0) | ||
| 53 | return; | ||
| 54 | } | ||
| 55 | |||
| 56 | void cx23885_ir_tx_work_handler(struct work_struct *work) | ||
| 57 | { | ||
| 58 | struct cx23885_dev *dev = | ||
| 59 | container_of(work, struct cx23885_dev, ir_tx_work); | ||
| 60 | u32 events = 0; | ||
| 61 | unsigned long *notifications = &dev->ir_tx_notifications; | ||
| 62 | |||
| 63 | if (test_and_clear_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications)) | ||
| 64 | events |= V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ; | ||
| 65 | |||
| 66 | if (events == 0) | ||
| 67 | return; | ||
| 68 | |||
| 69 | } | ||
| 70 | |||
| 71 | /* Called in an IRQ context */ | ||
| 72 | void cx23885_ir_rx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events) | ||
| 73 | { | ||
| 74 | struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev); | ||
| 75 | unsigned long *notifications = &dev->ir_rx_notifications; | ||
| 76 | |||
| 77 | if (events & V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ) | ||
| 78 | set_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications); | ||
| 79 | if (events & V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED) | ||
| 80 | set_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications); | ||
| 81 | if (events & V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN) | ||
| 82 | set_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications); | ||
| 83 | if (events & V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN) | ||
| 84 | set_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications); | ||
| 85 | schedule_work(&dev->ir_rx_work); | ||
| 86 | } | ||
| 87 | |||
| 88 | /* Called in an IRQ context */ | ||
| 89 | void cx23885_ir_tx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events) | ||
| 90 | { | ||
| 91 | struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev); | ||
| 92 | unsigned long *notifications = &dev->ir_tx_notifications; | ||
| 93 | |||
| 94 | if (events & V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ) | ||
| 95 | set_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications); | ||
| 96 | schedule_work(&dev->ir_tx_work); | ||
| 97 | } | ||