From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bin.Shi@csr.com (Bin Shi) Date: Wed, 05 May 2010 09:46:54 +0800 Subject: Linux Bluetooth HFP through usp pcm design questions Message-ID: <1273024014.9369.1.camel@ben-desktop> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi all, I am working on vendor ARM1136 platform. Nowdays, I want to integrate CSR BC06 chip to my board with HFP profile, bluetooth chip connect its pcm interface with platform's usp interface. As I know, HFP profile should has at least two deamons, one for host and one for target(BC06). In low level, driver for usp pcm should be available, which is compatible with BC06 frame format. Now, audio path is OK for playback and capture with ALSA. My questions are: 1) How could I control stream path: eg headphone voice->BC06->usp interface->platform speaker? 2) Should it be strictly sync for controlling this application? 3) Data format between usp interface and headphone interface(bypass bluetooth) should be pcm stream? Any suggestion would be welcomed! Thanks. --- Best Regards, Bin Shi Member of the CSR plc group of companies. CSR plc registered in England and Wales, registered number 4187346, registered office Churchill House, Cambridge Business Park, Cowley Road, Cambridge, CB4 0WZ, United Kingdom -------------- next part -------------- An HTML attachment was scrubbed... URL: