Messages in this thread | | | From | "" <> | Subject | RE: [PATCH] ASoC: fsl_sai: Add isr to deal with error flag | Date | Thu, 27 Mar 2014 02:53:50 +0000 |
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> On Thu, Mar 27, 2014 at 10:13:48AM +0800, Xiubo Li-B47053 wrote: > > > + regmap_read(sai->regmap, FSL_SAI_TCSR, &xcsr); > > > + regmap_write(sai->regmap, FSL_SAI_TCSR, xcsr); > > > + > > > + if (xcsr & FSL_SAI_CSR_WSF) > > > + dev_dbg(dev, "isr: Start of Tx word detected\n"); > > > + > > > + if (xcsr & FSL_SAI_CSR_SEF) > > > + dev_dbg(dev, "isr: Tx Frame sync error detected\n"); > > > + > > > + if (xcsr & FSL_SAI_CSR_FEF) > > > + dev_dbg(dev, "isr: Transmit underrun detected\n"); > > > + > > > > Actually, the above three isrs should to write a logic 1 to this field > > to clear this flag. > > > > > > > + if (xcsr & FSL_SAI_CSR_FWF) > > > + dev_dbg(dev, "isr: Enabled transmit FIFO is empty\n"); > > > + > > > + if (xcsr & FSL_SAI_CSR_FRF) > > > + dev_dbg(dev, "isr: Transmit FIFO watermark has been reached\n"); > > > + > > > > While are these ones really needed to clear manually ? > > The reference manual doesn't mention about the requirement. So SAI should do > the self-clearance.
Yes, I do think we should let it do the self-clearance, and shouldn't interfere of them...
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