treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
[sfrench/cifs-2.6.git] / drivers / media / pci / cx23885 / cx23885-av.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Driver for the Conexant CX23885/7/8 PCIe bridge
4  *
5  *  AV device support routines - non-input, non-vl42_subdev routines
6  *
7  *  Copyright (C) 2010  Andy Walls <awalls@md.metrocast.net>
8  */
9
10 #include "cx23885.h"
11 #include "cx23885-av.h"
12 #include "cx23885-video.h"
13
14 void cx23885_av_work_handler(struct work_struct *work)
15 {
16         struct cx23885_dev *dev =
17                            container_of(work, struct cx23885_dev, cx25840_work);
18         bool handled = false;
19
20         v4l2_subdev_call(dev->sd_cx25840, core, interrupt_service_routine,
21                          PCI_MSK_AV_CORE, &handled);
22
23         /* Getting here with the interrupt not handled
24            then probbaly flatiron does have pending interrupts.
25         */
26         if (!handled) {
27                 /* clear left and right adc channel interrupt request flag */
28                 cx23885_flatiron_write(dev, 0x1f,
29                         cx23885_flatiron_read(dev, 0x1f) | 0x80);
30                 cx23885_flatiron_write(dev, 0x23,
31                         cx23885_flatiron_read(dev, 0x23) | 0x80);
32         }
33
34         cx23885_irq_enable(dev, PCI_MSK_AV_CORE);
35 }