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V4L/DVB (13098): cx23885: Add integrated IR subdevice interrupt and n…
…otification 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>
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Andy Walls
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Mauro Carvalho Chehab
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Dec 5, 2009
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| /* | ||
| * 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@radix.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. | ||
| */ | ||
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| #include <media/v4l2-device.h> | ||
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| #include "cx23885.h" | ||
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| #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 | ||
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| #define CX23885_IR_TX_FIFO_SERVICE_REQ 0 | ||
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| 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; | ||
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| 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; | ||
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| if (events == 0) | ||
| return; | ||
| } | ||
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| 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; | ||
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| if (test_and_clear_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications)) | ||
| events |= V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ; | ||
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| if (events == 0) | ||
| return; | ||
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| } | ||
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| /* 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; | ||
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| 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); | ||
| } | ||
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| /* 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; | ||
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| if (events & V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ) | ||
| set_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications); | ||
| schedule_work(&dev->ir_tx_work); | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,31 @@ | ||
| /* | ||
| * 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@radix.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. | ||
| */ | ||
|
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| #ifndef _CX23885_IR_H_ | ||
| #define _CX23885_IR_H_ | ||
| void cx23885_ir_rx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events); | ||
| void cx23885_ir_tx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events); | ||
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| void cx23885_ir_rx_work_handler(struct work_struct *work); | ||
| void cx23885_ir_tx_work_handler(struct work_struct *work); | ||
| #endif |
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