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phy: rcar-gen3-usb2: add extcon support

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This patch adds extcon support for otg related channel.

Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Yoshihiro Shimoda 2016-04-29 14:22:25 +05:30 committed by Kishon Vijay Abraham I
parent 6dcfd7c300
commit 2b38543c8d
2 changed files with 27 additions and 0 deletions
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1
drivers/phy/Kconfig
View File

@ -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.

26
drivers/phy/phy-rcar-gen3-usb2.c
View File

@ -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); */