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Subject: [media] cx231xx: Provide signal lock status in G_INPUT Author: Devin Heitmueller <[email protected]> Date: Sun Jul 24 17:07:07 2011 -0300 Make use of the signal state registers to properly populate the signal lock registers in the cx231xx driver. This allows applications to know whether there is a signal present even in devices which lack a tuner (since such apps typically won't call G_TUNER if no tuner is present). [[email protected]: Fix CodingStyle: don't use {} for one-line if's] Signed-off-by: Devin Heitmueller <[email protected]> Signed-off-by: Mauro Carvalho Chehab <[email protected]> drivers/media/video/cx231xx/cx231xx-video.c | 15 ++++++++++++++- 1 files changed, 14 insertions(+), 1 deletions(-) --- http://git.linuxtv.org/media_tree.git?a=commitdiff;h=691ce64f3f300870e6cecfa36bfacbf9565c5388 diff --git a/drivers/media/video/cx231xx/cx231xx-video.c b/drivers/media/video/cx231xx/cx231xx-video.c index 21fa547..6e81f97 100644 --- a/drivers/media/video/cx231xx/cx231xx-video.c +++ b/drivers/media/video/cx231xx/cx231xx-video.c @@ -1179,7 +1179,8 @@ static int vidioc_enum_input(struct file *file, void *priv, { struct cx231xx_fh *fh = priv; struct cx231xx *dev = fh->dev; - unsigned int n; + u32 gen_stat; + unsigned int ret, n; n = i->index; if (n >= MAX_CX231XX_INPUT) @@ -1198,6 +1199,18 @@ static int vidioc_enum_input(struct file *file, void *priv, i->std = dev->vdev->tvnorms; + /* If they are asking about the active input, read signal status */ + if (n == dev->video_input) { + ret = cx231xx_read_i2c_data(dev, VID_BLK_I2C_ADDRESS, + GEN_STAT, 2, &gen_stat, 4); + if (ret > 0) { + if ((gen_stat & FLD_VPRES) == 0x00) + i->status |= V4L2_IN_ST_NO_SIGNAL; + if ((gen_stat & FLD_HLOCK) == 0x00) + i->status |= V4L2_IN_ST_NO_H_LOCK; + } + } + return 0; } _______________________________________________ linuxtv-commits mailing list [email protected] http://www.linuxtv.org/cgi-bin/mailman/listinfo/linuxtv-commits
