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phy: rcar-gen3-usb2: check dr_mode for otg mode

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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>
This commit is contained in:
Yoshihiro Shimoda 2017-10-12 15:34:45 +09:00 committed by Kishon Vijay Abraham I
parent f7da4e6d29
commit 7e0540f413
1 changed files with 7 additions and 3 deletions
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10
drivers/phy/renesas/phy-rcar-gen3-usb2.c
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@ -1,7 +1,7 @@
/*
* Renesas R-Car Gen3 for USB2.0 PHY driver
*
* Copyright (C) 2015 Renesas Electronics Corporation
* Copyright (C) 2015-2017 Renesas Electronics Corporation
*
* This is based on the phy-rcar-gen2 driver:
* Copyright (C) 2014 Renesas Solutions Corp.
@ -22,6 +22,7 @@
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/regulator/consumer.h>
#include <linux/usb/of.h>
#include <linux/workqueue.h>
/******* USB2.0 Host registers (original offset is +0x200) *******/
@ -415,13 +416,16 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)
/* call request_irq for OTG */
irq = platform_get_irq(pdev, 0);
if (irq >= 0) {
int ret;
INIT_WORK(&channel->work, rcar_gen3_phy_usb2_work);
irq = devm_request_irq(dev, irq, rcar_gen3_phy_usb2_irq,
IRQF_SHARED, dev_name(dev), channel);
if (irq < 0)
dev_err(dev, "No irq handler (%d)\n", irq);
}
if (of_usb_get_dr_mode_by_phy(dev->of_node, 0) == USB_DR_MODE_OTG) {
int ret;
channel->has_otg = true;
channel->extcon = devm_extcon_dev_allocate(dev,
rcar_gen3_phy_cable);