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 }
36