USB: otg: twl4030: fix wrong assumption of starting state
The reset state of twl4030-usb is not sleeping, it starts up awaken and we need to disable it if we have booted with a disconnected cable to avoid over consumption on the default state. To avoid problems later, we read the current state of the transceiver from the PHY_PWR_CTRL register. The bootloader can, anyways, put the device to sleep before us. Tested on a custom OMAP board. Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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@ -550,6 +550,7 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev)
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struct twl4030_usb_data *pdata = pdev->dev.platform_data;
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struct twl4030_usb *twl;
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int status, err;
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u8 pwr;
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if (!pdata) {
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dev_dbg(&pdev->dev, "platform_data not available\n");
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@ -568,7 +569,10 @@ static int __devinit twl4030_usb_probe(struct platform_device *pdev)
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twl->otg.set_peripheral = twl4030_set_peripheral;
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twl->otg.set_suspend = twl4030_set_suspend;
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twl->usb_mode = pdata->usb_mode;
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twl->asleep = 1;
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pwr = twl4030_usb_read(twl, PHY_PWR_CTRL);
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twl->asleep = (pwr & PHY_PWR_PHYPWD);
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/* init spinlock for workqueue */
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spin_lock_init(&twl->lock);
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