ee2d64f5cc
A major rewrite of interrupt handling for incoming mailbox processing, to split the timing critical steps from the the deferrable steps as the sending XPU on the CX23418 will time out and overwrite our incoming mailboxes rather quickly. Setup a pool of work "order forms" for the irq handler to send jobs to the new work handler routine which uses the kernel default work queue to do the deferrable work. Started optimizing some of the cx18-io calls as they are now the low hanging fruit for recoving microseconds back from the timeline. Future optimizations will get rid of mmio read retries, mmio stats logging, and combine smaller functions in the irq path into the larger ones to save ~2 us each. Signed-off-by: Andy Walls <awalls@radix.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
35 lines
1.3 KiB
C
35 lines
1.3 KiB
C
/*
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* cx18 init/start/stop/exit stream functions
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*
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* Derived from ivtv-streams.h
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*
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* Copyright (C) 2007 Hans Verkuil <hverkuil@xs4all.nl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA
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*/
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u32 cx18_find_handle(struct cx18 *cx);
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struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle);
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int cx18_streams_setup(struct cx18 *cx);
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int cx18_streams_register(struct cx18 *cx);
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void cx18_streams_cleanup(struct cx18 *cx, int unregister);
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/* Capture related */
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int cx18_start_v4l2_encode_stream(struct cx18_stream *s);
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int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end);
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void cx18_stop_all_captures(struct cx18 *cx);
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