Commit 2b38543c authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by Kishon Vijay Abraham I
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phy: rcar-gen3-usb2: add extcon support 



This patch adds extcon support for otg related channel.

Signed-off-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
parent 6dcfd7c3

drivers/phy/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -121,6 +121,7 @@ config PHY_RCAR_GEN2 
config PHY_RCAR_GEN3_USB2

	tristate "Renesas R-Car generation 3 USB 2.0 PHY driver"

	depends on ARCH_RENESAS

	depends on EXTCON

	select GENERIC_PHY

	help

	  Support for USB 2.0 PHY found on Renesas R-Car generation 3 SoCs.

drivers/phy/phy-rcar-gen3-usb2.c

+26 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
 * published by the Free Software Foundation.

 */



#include <linux/extcon.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/module.h>
@@ -77,6 +78,7 @@ 


struct rcar_gen3_chan {

	void __iomem *base;

	struct extcon_dev *extcon;

	struct phy *phy;

	struct regulator *vbus;

	bool has_otg;
@@ -127,6 +129,9 @@ static void rcar_gen3_init_for_host(struct rcar_gen3_chan *ch) 
	rcar_gen3_set_linectrl(ch, 1, 1);

	rcar_gen3_set_host_mode(ch, 1);

	rcar_gen3_enable_vbus_ctrl(ch, 1);



	extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, true);

	extcon_set_cable_state_(ch->extcon, EXTCON_USB, false);

}



static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch)
@@ -134,6 +139,9 @@ static void rcar_gen3_init_for_peri(struct rcar_gen3_chan *ch) 
	rcar_gen3_set_linectrl(ch, 0, 1);

	rcar_gen3_set_host_mode(ch, 0);

	rcar_gen3_enable_vbus_ctrl(ch, 0);



	extcon_set_cable_state_(ch->extcon, EXTCON_USB_HOST, false);

	extcon_set_cable_state_(ch->extcon, EXTCON_USB, true);

}



static bool rcar_gen3_check_vbus(struct rcar_gen3_chan *ch)
@@ -272,6 +280,12 @@ static const struct of_device_id rcar_gen3_phy_usb2_match_table[] = { 
};

MODULE_DEVICE_TABLE(of, rcar_gen3_phy_usb2_match_table);



static const unsigned int rcar_gen3_phy_cable[] = {

	EXTCON_USB,

	EXTCON_USB_HOST,

	EXTCON_NONE,

};



static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;
@@ -297,11 +311,23 @@ 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;



		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);

		channel->has_otg = true;

		channel->extcon = devm_extcon_dev_allocate(dev,

							rcar_gen3_phy_cable);

		if (IS_ERR(channel->extcon))

			return PTR_ERR(channel->extcon);



		ret = devm_extcon_dev_register(dev, channel->extcon);

		if (ret < 0) {

			dev_err(dev, "Failed to register extcon\n");

			return ret;

		}

	}



	/* devm_phy_create() will call pm_runtime_enable(dev); */