ASoC: fsl_sai: Set MCLK input or output direction

SAI support select MCLK direction with version.major > 3
and version.minor > 1, the default direction is input,
set it to be output according to DT property.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/1600323079-5317-4-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index 738b4dd..5117c1c 100644 (file)
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -1117,6 +1117,13 @@ static int fsl_sai_probe(struct platform_device *pdev)
        if (ret < 0)
                dev_warn(&pdev->dev, "Error reading SAI version: %d\n", ret);
 
+       /* Select MCLK direction */
+       if (of_find_property(np, "fsl,sai-mclk-direction-output", NULL) &&
+           sai->verid.major >= 3 && sai->verid.minor >= 1) {
+               regmap_update_bits(sai->regmap, FSL_SAI_MCTL,
+                                  FSL_SAI_MCTL_MCLK_EN, FSL_SAI_MCTL_MCLK_EN);
+       }
+
        pm_runtime_enable(&pdev->dev);
        regcache_cache_only(sai->regmap, true);