On 9 June 2016 at 15:26, Deucher, Alexander <Alexander.Deucher at amd.com> wrote: >> -----Original Message----- >> From: João Paulo Rechi Vita [mailto:jprvita at gmail.com] >> Sent: Thursday, June 09, 2016 3:14 PM >> To: Alex Deucher; maruthi.srinivas.b at gmail.com >> Cc: dri-devel at lists.freedesktop.org; alsa-devel at alsa-project.org; >> Deucher, >> Alexander; Bayyavarapu, Maruthi; João Paulo Rechi Vita; >> linux at endlessm.com >> Subject: AMD Carrizo HDMI audio >> >> Hello Alex and Maruthi, >> >> I'm trying to get HDMI audio working on a AMD CARRIZO laptop, which I >> believe need the ACP changes which got merged into Linux 4.6. But >> testing the v4.6 tag, amd_acp_hw_init() returns -ENODEV, because it >> succeeds the "if (acp_mode != ACP_MODE_I2S)" test in acp_hw.c. Does >> this mean this chip does not uses ACP, or is there anything else >> missing? > > Your system does not use ACP. It uses HDA audio. You'll need to use the new > DAL display code which is not yet upstream for HDMI or DP audio support. You > can find dal support on my freedesktop tree. E.g., > https://cgit.freedesktop.org/~agd5f/linux/log/?h=drm-next-4.7-wip-dal >
Thanks for such a quick answer! So that means no audio over HDMI/DP without DAL, right? Isn't any legacy code that can take care of that? I'll give it a try on your branch and report back if I have any problems. Best regards, -- João Paulo Rechi Vita http://about.me/jprvita
