diff options
Diffstat (limited to 'drivers/dma/dw/idma32.c')
| -rw-r--r-- | drivers/dma/dw/idma32.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/dma/dw/idma32.c b/drivers/dma/dw/idma32.c index 8707830f39ad..cd23b9238333 100644 --- a/drivers/dma/dw/idma32.c +++ b/drivers/dma/dw/idma32.c @@ -34,12 +34,20 @@ static void idma32_suspend_chan(struct dw_dma_chan *dwc, bool drain) if (drain) cfglo |= IDMA32C_CFGL_CH_DRAIN; - else - cfglo &= ~IDMA32C_CFGL_CH_DRAIN; channel_writel(dwc, CFG_LO, cfglo | DWC_CFGL_CH_SUSP); } +static void idma32_resume_chan(struct dw_dma_chan *dwc, bool drain) +{ + u32 cfglo = channel_readl(dwc, CFG_LO); + + if (drain) + cfglo &= ~IDMA32C_CFGL_CH_DRAIN; + + channel_writel(dwc, CFG_LO, cfglo & ~DWC_CFGL_CH_SUSP); +} + static u32 idma32_bytes2block(struct dw_dma_chan *dwc, size_t bytes, unsigned int width, size_t *len) { @@ -117,6 +125,7 @@ int idma32_dma_probe(struct dw_dma_chip *chip) /* Channel operations */ dw->initialize_chan = idma32_initialize_chan; dw->suspend_chan = idma32_suspend_chan; + dw->resume_chan = idma32_resume_chan; dw->encode_maxburst = idma32_encode_maxburst; dw->bytes2block = idma32_bytes2block; dw->block2bytes = idma32_block2bytes; |