From 7d27e5f3b2bbe8ca82a41dce5203a67d7595ab09 Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Sun, 2 Apr 2006 17:50:42 +0200 Subject: Add support for VIDIOC_INT_S_CRYSTAL_FREQ internal command. From: Hans Verkuil Some saa7115-based cards use a different crystal frequency and a different audio clock generation. Add a new VIDIOC_INT_S_CRYSTAL_FREQ command to be able to set these values. Also change the default APLL setting to 0. It makes no sense to have the audio clock independent from the video clock, this can lead to audio/video synchronization problems. Setting this to 0 is also consistent with the old saa7114.c source and the way the Hauppauge Windows driver sets it. Signed-off-by: Hans Verkuil --- linux/include/media/saa7115.h | 11 ++++++++++- linux/include/media/v4l2-common.h | 11 +++++++++++ 2 files changed, 21 insertions(+), 1 deletion(-) (limited to 'linux/include') diff --git a/linux/include/media/saa7115.h b/linux/include/media/saa7115.h index 6b4836f3f..9f0e2285a 100644 --- a/linux/include/media/saa7115.h +++ b/linux/include/media/saa7115.h @@ -1,5 +1,5 @@ /* - saa7115.h - definition for saa7113/4/5 inputs + saa7115.h - definition for saa7113/4/5 inputs and frequency flags Copyright (C) 2006 Hans Verkuil (hverkuil@xs4all.nl) @@ -33,5 +33,14 @@ #define SAA7115_SVIDEO2 8 #define SAA7115_SVIDEO3 9 +/* SAA7115 v4l2_crystal_freq frequency values */ +#define SAA7115_FREQ_32_11_MHZ 32110000 /* 32.11 MHz crystal, SAA7114/5 only */ +#define SAA7115_FREQ_24_576_MHZ 24576000 /* 24.576 MHz crystal */ + +/* SAA7115 v4l2_crystal_freq audio clock control flags */ +#define SAA7115_FREQ_FL_UCGC (1 << 0) /* SA 3A[7], UCGC, SAA7115 only */ +#define SAA7115_FREQ_FL_CGCDIV (1 << 1) /* SA 3A[6], CGCDIV, SAA7115 only */ +#define SAA7115_FREQ_FL_APLL (1 << 2) /* SA 3A[3], APLL, SAA7114/5 only */ + #endif diff --git a/linux/include/media/v4l2-common.h b/linux/include/media/v4l2-common.h index 60c0bc91e..6ffa8eabb 100644 --- a/linux/include/media/v4l2-common.h +++ b/linux/include/media/v4l2-common.h @@ -217,4 +217,15 @@ struct v4l2_routing { #define VIDIOC_INT_S_VIDEO_ROUTING _IOW ('d', 111, struct v4l2_routing) #define VIDIOC_INT_G_VIDEO_ROUTING _IOR ('d', 112, struct v4l2_routing) +struct v4l2_crystal_freq { + u32 freq; /* frequency in Hz of the crystal */ + u32 flags; /* device specific flags */ +}; + +/* Sets the frequency of the crystal used to generate the clocks. + An extra flags field allows device specific configuration regarding + clock frequency dividers, etc. If not used, then set flags to 0. + If the frequency is not supported, then -EINVAL is returned. */ +#define VIDIOC_INT_S_CRYSTAL_FREQ _IOW ('d', 113, struct v4l2_crystal_freq) + #endif /* V4L2_COMMON_H_ */ -- cgit v1.2.3