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authorPantelis Koukousoulas <pakt223@freemail.gr>2006-12-28 05:05:19 +0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-02-21 18:34:21 +0300
commit275b2e283b139bee19e7de5929d01484b8e3ee51 (patch)
treedbef39c440161762a14d119486dbc1fcd99c4455 /drivers/media/video/pvrusb2/pvrusb2-encoder.c
parent0b600512860cab5a0bb4647f5f726a91bce2633c (diff)
downloadlinux-275b2e283b139bee19e7de5929d01484b8e3ee51.tar.xz
V4L/DVB (5034): Pvrusb2: Enable radio mode round #1
This is the logic that supports switching modes via e.g., echo radio > /sys/class/pvrusb2/sn-*/ctl_input/cur_val. To do the mode switching we need to: a) broadcast AUDC_SET_RADIO and b) issue the CX2341X_ENC_MUTE_VIDEO command to the encoder. The first is done by adding a new pvr2_i2c_op and having it trigger on input change, the second by adding this command in pvr2_encoder_start() and requesting an encoder restart on input change by setting stale_subsys_mask appropriately. The clues about AUDC_SET_RADIO and CX2341X_ENC_MUTE_VIDEO were kindly provided by Hans Verkuil on the pvrusb2 mailing list. The idea to implement mode switching this way (on input change) is due to Mike Isely. Why AUDC_SET_RADIO/VIDIOC_S_STD are used for switching? I can 't be sure, but I think this can be traced to a cornell student being the first to implement radio support in ivtv "as a different standard". I think the rest just evolved from there (it 's in the ivtv ML archives). Signed-off-by: Pantelis Koukousoulas <pakt223@freemail.gr> Signed-off-by: Mike Isely <isely@pobox.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/pvrusb2/pvrusb2-encoder.c')
-rw-r--r--drivers/media/video/pvrusb2/pvrusb2-encoder.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/video/pvrusb2/pvrusb2-encoder.c b/drivers/media/video/pvrusb2/pvrusb2-encoder.c
index c94f97b79392..d094cac9f7a5 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-encoder.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-encoder.c
@@ -360,6 +360,9 @@ int pvr2_encoder_start(struct pvr2_hdw *hdw)
pvr2_hdw_gpio_chg_dir(hdw,0xffffffff,0x00000481);
pvr2_hdw_gpio_chg_out(hdw,0xffffffff,0x00000000);
+ pvr2_encoder_vcmd(hdw,CX2341X_ENC_MUTE_VIDEO,1,
+ hdw->input_val == PVR2_CVAL_INPUT_RADIO ? 1 : 0);
+
if (hdw->config == pvr2_config_vbi) {
status = pvr2_encoder_vcmd(hdw,CX2341X_ENC_START_CAPTURE,2,
0x01,0x14);