evie/android_kernel_oneplus_msm8998
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Merge "dwc3-msm: Introduce sysfs param to indicate usb compliance mode"

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Linux Build Service Account 2018-01-18 09:36:23 -08:00 • committed by Gerrit - the friendly Code Review server
commit f5e3d60a29
1 changed files with 34 additions and 1 deletions
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35
drivers/usb/dwc3/dwc3-msm.c
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@ -1,4 +1,4 @@
/* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved.
/* Copyright (c) 2012-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
@ -235,6 +235,7 @@ struct dwc3_msm {
struct pm_qos_request pm_qos_req_dma;
struct delayed_work perf_vote_work;
struct delayed_work sdp_check;
bool usb_compliance_mode;
struct mutex suspend_resume_mutex;
};
@ -2659,6 +2660,13 @@ static void check_for_sdp_connection(struct work_struct *w)
if (!mdwc->vbus_active)
return;
/* USB 3.1 compliance equipment usually repoted as floating
* charger as HS dp/dm lines are never connected. Do not
* tear down USB stack if compliance parameter is set
*/
if (mdwc->usb_compliance_mode)
return;
/* floating D+/D- lines detected */
if (dwc->gadget.state < USB_STATE_DEFAULT &&
dwc3_gadget_get_link_state(dwc) != DWC3_LINK_STATE_CMPLY) {
@ -2869,6 +2877,30 @@ static ssize_t xhci_link_compliance_store(struct device *dev,
static DEVICE_ATTR_RW(xhci_link_compliance);
static ssize_t usb_compliance_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dwc3_msm *mdwc = dev_get_drvdata(dev);
return snprintf(buf, PAGE_SIZE, "%c\n",
mdwc->usb_compliance_mode ? 'Y' : 'N');
}
static ssize_t usb_compliance_mode_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
int ret = 0;
struct dwc3_msm *mdwc = dev_get_drvdata(dev);
ret = strtobool(buf, &mdwc->usb_compliance_mode);
if (ret)
return ret;
return count;
}
static DEVICE_ATTR_RW(usb_compliance_mode);
static int dwc3_msm_probe(struct platform_device *pdev)
{
struct device_node *node = pdev->dev.of_node, *dwc3_node;
@ -3220,6 +3252,7 @@ static int dwc3_msm_probe(struct platform_device *pdev)
device_create_file(&pdev->dev, &dev_attr_mode);
device_create_file(&pdev->dev, &dev_attr_speed);
device_create_file(&pdev->dev, &dev_attr_xhci_link_compliance);
device_create_file(&pdev->dev, &dev_attr_usb_compliance_mode);
host_mode = usb_get_dr_mode(&mdwc->dwc3->dev) == USB_DR_MODE_HOST;
if (host_mode ||