From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rolf Fokkens Date: Sun, 06 Dec 1998 14:16:13 +0000 Subject: ESS 1887 & ESS chipsets in general Message-Id: List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-sound@vger.kernel.org I have a DEC PC 5500 with an onboard ESS1887 sound chip. The Linux sounddriver recognizes this chip as a 1688 chip. Though the ESS1887 has several controls for recording levels on WinNT (Mic, Line, Midi...) it has not a single one on Linux. Even the hardware documentation states that these registers exist, but the Linux driver apparently doesn't do anything with them. I managed to patch the driver into having a RECLEV control which controlled the recording level of the CD input, but now I want to know how te make it work in general. * Are people taking care of this already? * Who has an ESS chip and cannot control recording levels on Linux too? * What recording levels do exist on the 1688 chip (on WinNT, Win95 etc.)? * Can anyone send me the register descriptions of the 1688 chip? * Please send me register descriptions of whatever ESS soundchips! * I have some 1887 docu, but it's "preliminary". Can anyone send me more technical documentation about it? * I looked into the OSS api. I can't figure out how recording levels of in puts are controlled for several devices, independent of "playback" levels. Any Ideas? Thanks, Rolf.