[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <11a8271c31044515bd2657a93aefdaec@BY2PR03MB505.namprd03.prod.outlook.com>
Date: Thu, 27 Mar 2014 02:13:48 +0000
From: "Li.Xiubo@...escale.com" <Li.Xiubo@...escale.com>
To: "guangyu.chen@...escale.com" <guangyu.chen@...escale.com>,
"broonie@...nel.org" <broonie@...nel.org>
CC: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>
Subject: RE: [PATCH] ASoC: fsl_sai: Add isr to deal with error flag
> + 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 ?
Thanks,
--
Best Regards,
Xiubo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists