The machine driver bdw-rt5650 (for Google buddy) supports 2 or 4-channel recording while other two drivers support only 2-channel recording. HW constraints are implemented to reflect the hardware limitation on BDW platform. Changes since v1: - Change the patch title. - Remove the DUAL_CHANNEL and QUAD_CHANNEL macros which are too obvious. - Follow the naming convertion, using 'bdw_rt5650_' and 'bdw_rt5677_' to name startup functions. - Refine the comments in startup functions. - Redesign the bdw_rt5650_fe_startup() function for readability. - Add an assignment to initialize runtime->hw.channels_max variable. Brent Lu (3): ASoC: bdw-rt5677: add channel constraint ASoC: bdw-rt5650: add channel constraint ASoC: broadwell: add channel constraint sound/soc/intel/boards/bdw-rt5650.c | 29 +++++++++++++++++++++++++++++ sound/soc/intel/boards/bdw-rt5677.c | 26 ++++++++++++++++++++++++++ sound/soc/intel/boards/broadwell.c | 26 ++++++++++++++++++++++++++ 3 files changed, 81 insertions(+) -- 2.7.4
