2 files changed, 20 insertions, 0 deletions

diff --git a/include/sound/wm8962.h b/include/sound/wm8962.h
index 79e6d427b858..0af7c1674cbf 100644
--- a/include/sound/wm8962.h
+++ b/include/sound/wm8962.h
@@ -37,6 +37,7 @@
 #define WM8962_GPIO_FN_MICSCD          22
 
 struct wm8962_pdata {
+        struct clk *mclk;
         int gpio_base;
         u32 gpio_init[WM8962_MAX_GPIO];
 
diff --git a/sound/soc/codecs/wm8962.c b/sound/soc/codecs/wm8962.c
index ca2fda9d72be..eac29031ae26 100644
--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -14,6 +14,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/init.h>
+#include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/pm.h>
 #include <linux/gcd.h>
@@ -3541,6 +3542,8 @@ static int wm8962_set_pdata_from_of(struct i2c_client *i2c,
                                 pdata->gpio_init[i] = 0x0;
                 }
 
+        pdata->mclk = devm_clk_get(&i2c->dev, NULL);
+
         return 0;
 }
 
@@ -3572,6 +3575,14 @@ static int wm8962_i2c_probe(struct i2c_client *i2c,
                         return ret;
         }
 
+        /* Mark the mclk pointer to NULL if no mclk assigned */
+        if (IS_ERR(wm8962->pdata.mclk)) {
+                /* But do not ignore the request for probe defer */
+                if (PTR_ERR(wm8962->pdata.mclk) == -EPROBE_DEFER)
+                        return -EPROBE_DEFER;
+                wm8962->pdata.mclk = NULL;
+        }
+
         for (i = 0; i < ARRAY_SIZE(wm8962->supplies); i++)
                 wm8962->supplies[i].supply = wm8962_supply_names[i];
 
@@ -3780,6 +3791,12 @@ static int wm8962_runtime_resume(struct device *dev)
         struct wm8962_priv *wm8962 = dev_get_drvdata(dev);
         int ret;
 
+        ret = clk_prepare_enable(wm8962->pdata.mclk);
+        if (ret) {
+                dev_err(dev, "Failed to enable MCLK: %d\n", ret);
+                return ret;
+        }
+
         ret = regulator_bulk_enable(ARRAY_SIZE(wm8962->supplies),
                                     wm8962->supplies);
         if (ret != 0) {
@@ -3839,6 +3856,8 @@ static int wm8962_runtime_suspend(struct device *dev)
         regulator_bulk_disable(ARRAY_SIZE(wm8962->supplies),
                                wm8962->supplies);
 
+        clk_disable_unprepare(wm8962->pdata.mclk);
+
         return 0;
 }
 #endif