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Based on 3 normalized pattern(s): 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 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] 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 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
105 lines
3.2 KiB
C
105 lines
3.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Driver for the Conexant CX23885/7/8 PCIe bridge
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*
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* Infrared device support routines - non-input, non-vl42_subdev routines
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*
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* Copyright (C) 2009 Andy Walls <awalls@md.metrocast.net>
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*/
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#include "cx23885.h"
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#include "cx23885-ir.h"
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#include "cx23885-input.h"
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#include <media/v4l2-device.h>
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#define CX23885_IR_RX_FIFO_SERVICE_REQ 0
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#define CX23885_IR_RX_END_OF_RX_DETECTED 1
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#define CX23885_IR_RX_HW_FIFO_OVERRUN 2
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#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)
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{
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struct cx23885_dev *dev =
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container_of(work, struct cx23885_dev, ir_rx_work);
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u32 events = 0;
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unsigned long *notifications = &dev->ir_rx_notifications;
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if (test_and_clear_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications))
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events |= V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN;
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if (test_and_clear_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications))
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events |= V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN;
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if (test_and_clear_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications))
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events |= V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED;
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if (test_and_clear_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications))
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events |= V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ;
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if (events == 0)
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return;
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if (dev->kernel_ir)
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cx23885_input_rx_work_handler(dev, events);
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}
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void cx23885_ir_tx_work_handler(struct work_struct *work)
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{
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struct cx23885_dev *dev =
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container_of(work, struct cx23885_dev, ir_tx_work);
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u32 events = 0;
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unsigned long *notifications = &dev->ir_tx_notifications;
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if (test_and_clear_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications))
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events |= V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ;
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if (events == 0)
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return;
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}
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/* Possibly called in an IRQ context */
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void cx23885_ir_rx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events)
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{
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struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev);
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unsigned long *notifications = &dev->ir_rx_notifications;
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if (events & V4L2_SUBDEV_IR_RX_FIFO_SERVICE_REQ)
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set_bit(CX23885_IR_RX_FIFO_SERVICE_REQ, notifications);
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if (events & V4L2_SUBDEV_IR_RX_END_OF_RX_DETECTED)
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set_bit(CX23885_IR_RX_END_OF_RX_DETECTED, notifications);
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if (events & V4L2_SUBDEV_IR_RX_HW_FIFO_OVERRUN)
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set_bit(CX23885_IR_RX_HW_FIFO_OVERRUN, notifications);
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if (events & V4L2_SUBDEV_IR_RX_SW_FIFO_OVERRUN)
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set_bit(CX23885_IR_RX_SW_FIFO_OVERRUN, notifications);
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/*
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* For the integrated AV core, we are already in a workqueue context.
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* For the CX23888 integrated IR, we are in an interrupt context.
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*/
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if (sd == dev->sd_cx25840)
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cx23885_ir_rx_work_handler(&dev->ir_rx_work);
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else
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schedule_work(&dev->ir_rx_work);
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}
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/* Possibly called in an IRQ context */
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void cx23885_ir_tx_v4l2_dev_notify(struct v4l2_subdev *sd, u32 events)
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{
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struct cx23885_dev *dev = to_cx23885(sd->v4l2_dev);
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unsigned long *notifications = &dev->ir_tx_notifications;
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if (events & V4L2_SUBDEV_IR_TX_FIFO_SERVICE_REQ)
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set_bit(CX23885_IR_TX_FIFO_SERVICE_REQ, notifications);
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/*
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* For the integrated AV core, we are already in a workqueue context.
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* For the CX23888 integrated IR, we are in an interrupt context.
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*/
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if (sd == dev->sd_cx25840)
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cx23885_ir_tx_work_handler(&dev->ir_tx_work);
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else
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schedule_work(&dev->ir_tx_work);
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}
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