1 /*
2 * Driver for the Conexant CX23885/7/8 PCIe bridge
3 *
4 * AV device support routines - non-input, non-vl42_subdev routines
5 *
6 * Copyright (C) 2010 Andy Walls <awalls@md.metrocast.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
19 #include "cx23885.h"
20 #include "cx23885-av.h"
21 #include "cx23885-video.h"
22
cx23885_av_work_handler(struct work_struct * work)23 void cx23885_av_work_handler(struct work_struct *work)
24 {
25 struct cx23885_dev *dev =
26 container_of(work, struct cx23885_dev, cx25840_work);
27 bool handled = false;
28
29 v4l2_subdev_call(dev->sd_cx25840, core, interrupt_service_routine,
30 PCI_MSK_AV_CORE, &handled);
31
32 /* Getting here with the interrupt not handled
33 then probbaly flatiron does have pending interrupts.
34 */
35 if (!handled) {
36 /* clear left and right adc channel interrupt request flag */
37 cx23885_flatiron_write(dev, 0x1f,
38 cx23885_flatiron_read(dev, 0x1f) | 0x80);
39 cx23885_flatiron_write(dev, 0x23,
40 cx23885_flatiron_read(dev, 0x23) | 0x80);
41 }
42
43 cx23885_irq_enable(dev, PCI_MSK_AV_CORE);
44 }
45