linux-kernel - [PATCH v2] mfd: arizona: Add DT options for max_channels

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Date:   Wed, 31 Aug 2016 10:25:43 +0100
From:   Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
To:     <lee.jones@...aro.org>
CC:     <patches@...nsource.wolfsonmicro.com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH v2] mfd: arizona: Add DT options for max_channels_clocked and PDM speaker config

This patch adds DT settings for the max_channels_clocked, spk_fmt and
spk_mute pdata.

Signed-off-by: Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
---
 Documentation/devicetree/bindings/mfd/arizona.txt | 11 ++++++++
 drivers/mfd/arizona-core.c                        | 31 +++++++++++++++++++++++
 2 files changed, 42 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt
index a6e2ea41..6eaf006 100644
--- a/Documentation/devicetree/bindings/mfd/arizona.txt
+++ b/Documentation/devicetree/bindings/mfd/arizona.txt
@@ -85,6 +85,17 @@ Optional properties:
     present, the number of values should be less than or equal to the
     number of inputs, unspecified inputs will use the chip default.
 
+  - wlf,max-channels-clocked : The maximum number of channels to be clocked on
+    each AIF, useful for I2S systems with multiple data lines being mastered.
+    Specify one cell for each AIF, specify zero for AIFs that should be handled
+    normally.
+
+  - wlf,spk-fmt : PDM speaker data format, must contain 2 cells (OUT5 and OUT6).
+    See the datasheet for values.
+
+  - wlf,spk-mute : PDM speaker mute setting, must contain 2 cells (OUT5 and OUT6).
+    See the datasheet for values.
+
   - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
     they are being externally supplied. As covered in
     Documentation/devicetree/bindings/regulator/regulator.txt
diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index b95ff2d..36a9633 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -816,6 +816,37 @@ static int arizona_of_get_core_pdata(struct arizona *arizona)
 		count++;
 	}
 
+	count = 0;
+	of_property_for_each_u32(arizona->dev->of_node,
+				 "wlf,max-channels-clocked",
+				 prop, cur, val) {
+		if (count == ARRAY_SIZE(pdata->max_channels_clocked))
+			break;
+
+		pdata->max_channels_clocked[count] = val;
+		count++;
+	}
+
+	count = 0;
+	of_property_for_each_u32(arizona->dev->of_node, "wlf,spk-fmt", prop,
+				 cur, val) {
+		if (count == ARRAY_SIZE(pdata->spk_fmt))
+			break;
+
+		pdata->spk_fmt[count] = val;
+		count++;
+	}
+
+	count = 0;
+	of_property_for_each_u32(arizona->dev->of_node, "wlf,spk-mute", prop,
+				 cur, val) {
+		if (count == ARRAY_SIZE(pdata->spk_mute))
+			break;
+
+		pdata->spk_mute[count] = val;
+		count++;
+	}
+
 	return 0;
 }
 
-- 
1.9.1