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 
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