ASoC: core: Try to use regmap if the driver doesn't set up any I/O

Since most new drivers are expected to use regmap and since frequently the
only thing we need to do in the CODEC probe function is configure the I/O
try to initialise the register I/O using regmap if the driver hasn't done
so after probe().

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>

diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index fe16135250f8fdbcccc5f18a83e52b6d3611161a..64b464ca3bc55ff6aaa89678b5ee6227e1a04ba5 100644 (file)
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -1095,6 +1095,10 @@ static int soc_probe_codec(struct snd_soc_card *card,
                }
        }
 
+       /* If the driver didn't set I/O up try regmap */
+       if (!codec->control_data)
+               snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
+
        if (driver->controls)
                snd_soc_add_codec_controls(codec, driver->controls,
                                     driver->num_controls);