phy: rcar-gen3-usb2: check dr_mode for otg mode
The previous code assumed a channel has otg capability if a channel has interrupt property. But, it is not good because: - Battery charging feature also needs interrupt property. - Some R-Car Gen3 SoCs (e.g. R-Car D3) don't have OTG capability. So, this patch checks whether usb 2.0 host node has dr_mode property or not. If it has 'dr_mode = "otg";', this driver enables otg capability. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
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@ -1,7 +1,7 @@
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/*
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* Renesas R-Car Gen3 for USB2.0 PHY driver
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*
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* Copyright (C) 2015 Renesas Electronics Corporation
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* Copyright (C) 2015-2017 Renesas Electronics Corporation
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*
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* This is based on the phy-rcar-gen2 driver:
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* Copyright (C) 2014 Renesas Solutions Corp.
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@ -22,6 +22,7 @@
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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#include <linux/regulator/consumer.h>
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#include <linux/usb/of.h>
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#include <linux/workqueue.h>
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/******* USB2.0 Host registers (original offset is +0x200) *******/
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@ -415,13 +416,16 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
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/* call request_irq for OTG */
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irq = platform_get_irq(pdev, 0);
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if (irq >= 0) {
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int ret;
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INIT_WORK(&channel->work, rcar_gen3_phy_usb2_work);
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irq = devm_request_irq(dev, irq, rcar_gen3_phy_usb2_irq,
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IRQF_SHARED, dev_name(dev), channel);
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if (irq < 0)
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dev_err(dev, "No irq handler (%d)\n", irq);
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}
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if (of_usb_get_dr_mode_by_phy(dev->of_node, 0) == USB_DR_MODE_OTG) {
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int ret;
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channel->has_otg = true;
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channel->extcon = devm_extcon_dev_allocate(dev,
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rcar_gen3_phy_cable);
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