From c75079cc2addedf958358b88306591a5f9c4fb00 Mon Sep 17 00:00:00 2001 From: Arnuschky Date: Tue, 27 Jul 2010 05:48:08 -0300 Subject: [PATCH] V4L/DVB: Report supported QAM modes on bt8xx Here a small patch to get a TwinHan VT DST DVB-T card working with kernels >= 2.6.32. Analogously to http://linuxtv.org/hg/v4l-dvb/rev/0e735b509163 I had to: "Fill in the .caps field in struct dst_dvbt_ops (around line 1763) with all the supported QAM modulation methods to match the capabilities of the card as implemented in function dst_set_modulation (around line 502). Note that beginning with linux kernel version 2.6.32 the modulation method is checked (by function dvb_frontend_check_parameters in file drivers/media/dvb/dvb-core/dvb_frontend.c) and thus tuning fails if you use a modulation method that is not present in the .caps field." Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb/bt8xx/dst.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/media/dvb/bt8xx/dst.c b/drivers/media/dvb/bt8xx/dst.c index 248a2a9d8416..caa4e18ed1c1 100644 --- a/drivers/media/dvb/bt8xx/dst.c +++ b/drivers/media/dvb/bt8xx/dst.c @@ -1763,7 +1763,15 @@ static struct dvb_frontend_ops dst_dvbt_ops = { .frequency_min = 137000000, .frequency_max = 858000000, .frequency_stepsize = 166667, - .caps = FE_CAN_FEC_AUTO | FE_CAN_QAM_AUTO | FE_CAN_TRANSMISSION_MODE_AUTO | FE_CAN_GUARD_INTERVAL_AUTO + .caps = FE_CAN_FEC_AUTO | + FE_CAN_QAM_AUTO | + FE_CAN_QAM_16 | + FE_CAN_QAM_32 | + FE_CAN_QAM_64 | + FE_CAN_QAM_128 | + FE_CAN_QAM_256 | + FE_CAN_TRANSMISSION_MODE_AUTO | + FE_CAN_GUARD_INTERVAL_AUTO }, .release = dst_release, -- GitLab