Hi Takashi,
-----Original Message----- From: Takashi Iwai [mailto:tiwai@suse.de] Sent: Thursday, July 24, 2014 9:21 PM To: Yang, Libin Cc: 'alsa-devel@alsa-project.org'; Lin, Mengdong Subject: Re: [PATCH 1/2] ALSA: hda - add PCI IDs for Intel Braswell
At Thu, 24 Jul 2014 12:59:55 +0000, Yang, Libin wrote:
Hi Takashi,
After checking the HW, the HDMI audio codec doesn't support EPSS. If we
force it to support runtime PM, there is risk. Besides, as the codec doesn't support EPSS, if we want to support runtime PM, simply add the AZX_DCAPS_PM_RUNTIME flag doesn't help. We must think out a method to ensure the driver enter pm runtime even the codec doesn't support.
Wait, is the controller for the generic codecs or dedicated to the embedded HDMI? In the latter case, AZX_DCAPS_INTEL_PCM_NOPM is anyway wrong. For HDMI, we use different flags.
OK, I see. I will add the flags and have a test.
Takashi