Messages in this thread Patch in this message | | | From | Kishon Vijay Abraham I <> | Subject | [PATCH v3 3/7] usb: dwc3-omap: use runtime API's to enable clocks | Date | Mon, 8 Oct 2012 14:53:52 +0530 |
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Before accessing any register, runtime API's should be invoked to enable the clocks. runtime API's are added here to prevent abort during register access.
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> --- drivers/usb/dwc3/dwc3-omap.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index cb4037a..850a0cf 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -43,6 +43,7 @@ #include <linux/spinlock.h> #include <linux/platform_device.h> #include <linux/platform_data/dwc3-omap.h> +#include <linux/pm_runtime.h> #include <linux/dma-mapping.h> #include <linux/ioport.h> #include <linux/io.h> @@ -272,6 +273,13 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev) omap->irq = irq; omap->base = base; + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "get_sync failed with err %d\n", ret); + return ret; + } + reg = dwc3_omap_readl(omap->base, USBOTGSS_UTMI_OTG_STATUS); utmi_mode = of_get_property(node, "utmi-mode", &size); @@ -348,6 +356,8 @@ static int __devinit dwc3_omap_probe(struct platform_device *pdev) static int __devexit dwc3_omap_remove(struct platform_device *pdev) { + pm_runtime_put_sync(&pdev->dev); + pm_runtime_disable(&pdev->dev); device_for_each_child(&pdev->dev, NULL, dwc3_omap_remove_core); return 0; -- 1.7.9.5
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