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usb: phy: msm: Use extcon framework for VBUS and ID detection

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On recent Qualcomm platforms VBUS and ID lines are not routed to
USB PHY LINK controller. Use extcon framework to receive connect
and disconnect ID and VBUS notification.

Signed-off-by: Ivan T. Ivanov <ivan.ivanov@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Ivan T. Ivanov
2015-04-09 11:34:22 +03:00
committed by Felipe Balbi
parent 5a294e5469
commit 591fc116f3
4 changed files with 109 additions and 0 deletions
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17
include/linux/usb/msm_hsusb.h
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@@ -18,6 +18,7 @@
#ifndef __ASM_ARCH_MSM_HSUSB_H
#define __ASM_ARCH_MSM_HSUSB_H
#include <linux/extcon.h>
#include <linux/types.h>
#include <linux/usb/otg.h>
#include <linux/clk.h>
@@ -119,6 +120,17 @@ struct msm_otg_platform_data {
void (*setup_gpio)(enum usb_otg_state state);
};
/**
* struct msm_usb_cable - structure for exteternal connector cable
* state tracking
* @nb: hold event notification callback
* @conn: used for notification registration
*/
struct msm_usb_cable {
struct notifier_block nb;
struct extcon_specific_cable_nb conn;
};
/**
* struct msm_otg: OTG driver data. Shared by HCD and DCD.
* @otg: USB OTG Transceiver structure.
@@ -138,6 +150,8 @@ struct msm_otg_platform_data {
* @chg_type: The type of charger attached.
* @dcd_retires: The retry count used to track Data contact
* detection process.
* @vbus: VBUS signal state trakining, using extcon framework
* @id: ID signal state trakining, using extcon framework
*/
struct msm_otg {
struct usb_phy phy;
@@ -166,6 +180,9 @@ struct msm_otg {
struct reset_control *phy_rst;
struct reset_control *link_rst;
int vdd_levels[3];
struct msm_usb_cable vbus;
struct msm_usb_cable id;
};
#endif