[alsa-devel] [PATCH v2 1/2] mfd: arizona: Add support for INn_Mode register control

[Inha Song]

Some boards need to set the INn_MODE[1:0] register to change
the input signal patch. This wlf,inmode property is optional.
If present values must be specified by the number of
ARIZONA_MAX_INPUT.

Example:
   - wlf,inmode = <2 0 2 0>;	/* IN1, IN3 use DMIC */

Signed-off-by: Inha Song <ideal.song@xxxxxxxxxxx>
---
 drivers/mfd/arizona-core.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index 10a0cb9..2b68ccd 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -534,7 +534,7 @@ EXPORT_SYMBOL_GPL(arizona_of_get_named_gpio);
 static int arizona_of_get_core_pdata(struct arizona *arizona)
 {
 	struct arizona_pdata *pdata = &arizona->pdata;
-	int ret, i;
+	int ret, i, proplen;
 
 	pdata->reset = arizona_of_get_named_gpio(arizona, "wlf,reset", true);
 
@@ -560,6 +560,15 @@ static int arizona_of_get_core_pdata(struct arizona *arizona)
 			ret);
 	}
 
+	proplen = of_property_count_u32_elems(arizona->dev->of_node,
+					      "wlf,inmode");
+	if (proplen > 0 && proplen <= ARRAY_SIZE(arizona->pdata.inmode)) {
+		for (i = 0; i < proplen; i++)
+			of_property_read_u32_index(arizona->dev->of_node,
+						   "wlf,inmode", i,
+						    &arizona->pdata.inmode[i]);
+	}
+
 	return 0;
 }
 
-- 
2.0.0.390.gcb682f8
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