usb: bdc: Add clock enable for new chips with a separate BDC clock

Newer SoC's have added a BDC clock to the Device Tree, so get
and enable it.

Signed-off-by: Al Cooper <alcooperx@gmail.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

diff --git a/drivers/usb/gadget/udc/bdc/bdc_core.c b/drivers/usb/gadget/udc/bdc/bdc_core.c
index e9bd8d4..dda7b43 100644 (file)
--- a/drivers/usb/gadget/udc/bdc/bdc_core.c
+++ b/drivers/usb/gadget/udc/bdc/bdc_core.c
@@ -27,6 +27,7 @@
 #include <linux/moduleparam.h>
 #include <linux/usb/ch9.h>
 #include <linux/usb/gadget.h>
+#include <linux/clk.h>
 
 #include "bdc.h"
 #include "bdc_dbg.h"
@@ -452,8 +453,22 @@ static int bdc_probe(struct platform_device *pdev)
        int irq;
        u32 temp;
        struct device *dev = &pdev->dev;
+       struct clk *clk;
 
        dev_dbg(dev, "%s()\n", __func__);
+
+       clk = devm_clk_get(dev, "sw_usbd");
+       if (IS_ERR(clk)) {
+               dev_info(dev, "Clock not found in Device Tree\n");
+               clk = NULL;
+       }
+
+       ret = clk_prepare_enable(clk);
+       if (ret) {
+               dev_err(dev, "could not enable clock\n");
+               return ret;
+       }
+
        bdc = devm_kzalloc(dev, sizeof(*bdc), GFP_KERNEL);
        if (!bdc)
                return -ENOMEM;