forked from Minki/linux
84d69e790f
Recent AMD HDMI codecs (revision ID 3 and later, 0x100300 as reported by procfs codec#0) have a configurable ramp-up/down functionality. The documentation ( http://www.x.org/docs/AMD/AMD_HDA_verbs_v2.pdf ) specifies that 180 ("180/256 =~ 0.7") is recommended for PCM and 0 for non-PCM. Apply the recommended values according to provided S/PDIF AES0 settings since ramp-up/down does not make sense for non-PCM. v2: adapted to hdmi_ops infrastructure * More note from Anssi: actually, re-reading mails reveals that Olivier didn't find the expected difference with this setting, except for "maybe slightly slower startup with AES0=6" (i.e. value 0, which is unexpected). So maybe a) it makes too unnoticiable a difference, or b) only affects certain hardware (card and/or sink), or c) ramp-up/down is only triggered with the MUTE bit of ATI_VERB_SET_MULTICHANNEL_xx which is also rev3+ specific, but is not presently used by the driver, or something else. So there's a significant chance setting ramp rate is useless for us ATM, but probably does not do actual harm either. Signed-off-by: Anssi Hannula <anssi.hannula@iki.fi> Tested-by: Olivier Langlois <olivier@trillion01.com> # v1 Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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| .. | ||
| aoa | ||
| arm | ||
| atmel | ||
| core | ||
| drivers | ||
| firewire | ||
| i2c | ||
| isa | ||
| mips | ||
| oss | ||
| parisc | ||
| pci | ||
| pcmcia | ||
| ppc | ||
| sh | ||
| soc | ||
| sparc | ||
| spi | ||
| synth | ||
| usb | ||
| ac97_bus.c | ||
| Kconfig | ||
| last.c | ||
| Makefile | ||
| sound_core.c | ||
| sound_firmware.c | ||