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275b2e283b
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> |
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| .. | ||
| Kconfig | ||
| Makefile | ||
| pvrusb2-audio.c | ||
| pvrusb2-audio.h | ||
| pvrusb2-context.c | ||
| pvrusb2-context.h | ||
| pvrusb2-ctrl.c | ||
| pvrusb2-ctrl.h | ||
| pvrusb2-cx2584x-v4l.c | ||
| pvrusb2-cx2584x-v4l.h | ||
| pvrusb2-debug.h | ||
| pvrusb2-debugifc.c | ||
| pvrusb2-debugifc.h | ||
| pvrusb2-eeprom.c | ||
| pvrusb2-eeprom.h | ||
| pvrusb2-encoder.c | ||
| pvrusb2-encoder.h | ||
| pvrusb2-hdw-internal.h | ||
| pvrusb2-hdw.c | ||
| pvrusb2-hdw.h | ||
| pvrusb2-i2c-chips-v4l2.c | ||
| pvrusb2-i2c-cmd-v4l2.c | ||
| pvrusb2-i2c-cmd-v4l2.h | ||
| pvrusb2-i2c-core.c | ||
| pvrusb2-i2c-core.h | ||
| pvrusb2-io.c | ||
| pvrusb2-io.h | ||
| pvrusb2-ioread.c | ||
| pvrusb2-ioread.h | ||
| pvrusb2-main.c | ||
| pvrusb2-std.c | ||
| pvrusb2-std.h | ||
| pvrusb2-sysfs.c | ||
| pvrusb2-sysfs.h | ||
| pvrusb2-tuner.c | ||
| pvrusb2-tuner.h | ||
| pvrusb2-util.h | ||
| pvrusb2-v4l2.c | ||
| pvrusb2-v4l2.h | ||
| pvrusb2-video-v4l.c | ||
| pvrusb2-video-v4l.h | ||
| pvrusb2-wm8775.c | ||
| pvrusb2-wm8775.h | ||
| pvrusb2.h | ||