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@opensource.wolfsonmicro.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt
index a6e2ea4..8f2e282 100644 (file)
--- a/Documentation/devicetree/bindings/mfd/arizona.txt
+++ b/Documentation/devicetree/bindings/mfd/arizona.txt
@@ -85,6 +85,24 @@ 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 to be configured, specify zero for AIFs that
+    should be handled normally.
+    If present, number of cells must be less than or equal to the number of
+    AIFs. If less than the number of AIFs, for cells that have not been
+    specified the corresponding AIFs will be treated as default setting.
+
+  - wlf,spk-fmt : PDM speaker data format, must contain 2 cells (OUT5 and OUT6).
+    See the datasheet for values.
+    The second cell is ignored for codecs that do not have OUT6 (wm5102, wm8997,
+      wm8998, wm1814)
+
+  - wlf,spk-mute : PDM speaker mute setting, must contain 2 cells (OUT5 and OUT6).
+    See the datasheet for values.
+    The second cell is ignored for codecs that do not have OUT6 (wm5102, wm8997,
+    wm8998, wm1814)
+
   - 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 4c18c8e..672924d 100644 (file)
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -828,6 +828,7 @@ static int arizona_of_get_core_pdata(struct arizona *arizona)
        struct property *prop;
        const __be32 *cur;
        u32 val;
+       u32 pdm_val[ARIZONA_MAX_PDM_SPK];
        int ret, i;
        int count = 0;
 
@@ -884,6 +885,35 @@ 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++;
+       }
+
+       ret = of_property_read_u32_array(arizona->dev->of_node,
+                                        "wlf,spk-fmt",
+                                        pdm_val,
+                                        ARRAY_SIZE(pdm_val));
+
+       if (ret >= 0)
+               for (count = 0; count < ARRAY_SIZE(pdata->spk_fmt); ++count)
+                       pdata->spk_fmt[count] = pdm_val[count];
+
+       ret = of_property_read_u32_array(arizona->dev->of_node,
+                                        "wlf,spk-mute",
+                                        pdm_val,
+                                        ARRAY_SIZE(pdm_val));
+
+       if (ret >= 0)
+               for (count = 0; count < ARRAY_SIZE(pdata->spk_mute); ++count)
+                       pdata->spk_mute[count] = pdm_val[count];
+
        return 0;
 }