mirror of
https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
synced 2026-10-11 23:24:22 -04:00
No description
- C 98.2%
- Assembly 1%
- Makefile 0.3%
- Shell 0.2%
- Python 0.1%
| Filename | Latest commit message | Latest commit date |
|---|---|---|
52ae6581d7
Left and right channel content can get swapped
in new cdc_dma interface.
DMA interfaces underrun results in Channels being swapped.
This issue is a side effect current SW setup for RX path:
1. HLOS Setup WCD Analog Path, Bolero CODEC.
CODEC would drive Fs to LPASS DMAs requesting for PCM samples.
2. DSP setup RX Buffers in Memory :
3. DSP Configures RD DMAs and DMA RXTX CODEC interface
(Enable CODEC DMA interface buffer and
Enable DMA LPASS_RXTX_LPAIF_RDDMA_CTL0.ENABLE
and LPASS_RXTX_LPAIF_RDDMA_CODEC_INTF0.ENABLE
If CODEC Fs, aligns with DMA interface being enabled
there is an underrun as DMA interface pingpong buffer is empty.
This results in channels being swapped.
Proposed work around while keeping current SW setup order.
Provide a workaround to Keep Fs disabled until DMAs and
CODEC DMA interface are enabled and HW could prefetch all buffers.
SW would keep existing setup order:
1. HLOS Setup WCD Analog Path, Bolero CODEC.
CODEC would drive Fs to LPASS DMAs requesting for PCM samples.
2. DSP setup RX Buffers in Memory :
3. DSP Configures DMAs and DMA CODEC interface
(Enable CODEC DMA interface buffer and
Enable DMA LPASS_RXTX_LPAIF_RDDMA_CTL0.ENABLE
and LPASS_RXTX_LPAIF_RDDMA_CODEC_INTF0.ENABLE)
4. Enable Fs Set #LPASS_RX_CDC_RX0_RX_PATH_CTL. CLK_EN to ONE
Change-Id: I7916667f5d857464cc7d77b51da307ab234cc7bb
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
|
||
| asoc | ||
| config | ||
| dsp | ||
| include | ||
| ipc | ||
| soc | ||
| Android.mk | ||
| Makefile | ||
| Makefile.am | ||
| NOTICE | ||