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Merge "usb: dwc3-msm: Add orientation setting capability via sysfs"

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qctecmdr 2020-08-11 15:30:42 -07:00 • committed by Gerrit - the friendly Code Review server
commit 6b3e33ff9a
1 changed files with 36 additions and 2 deletions
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38
drivers/usb/dwc3/dwc3-msm.c
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@ -484,6 +484,7 @@ struct dwc3_msm {
struct usb_role_switch *role_switch;
bool ss_release_called;
int orientation_override;
};
#define USB_HSPHY_3P3_VOL_MIN 3050000 /* uV */
@ -3070,9 +3071,11 @@ static int dwc3_msm_resume(struct dwc3_msm *mdwc)
if (dwc->maximum_speed >= USB_SPEED_SUPER &&
mdwc->lpm_flags & MDWC3_SS_PHY_SUSPEND) {
mdwc->ss_phy->flags &= ~(PHY_LANE_A | PHY_LANE_B);
if (mdwc->typec_orientation == ORIENTATION_CC1)
if (mdwc->orientation_override)
mdwc->ss_phy->flags |= mdwc->orientation_override;
else if (mdwc->typec_orientation == ORIENTATION_CC1)
mdwc->ss_phy->flags |= PHY_LANE_A;
if (mdwc->typec_orientation == ORIENTATION_CC2)
else if (mdwc->typec_orientation == ORIENTATION_CC2)
mdwc->ss_phy->flags |= PHY_LANE_B;
usb_phy_set_suspend(mdwc->ss_phy, 0);
mdwc->ss_phy->flags &= ~DEVICE_IN_SS_MODE;
@ -3744,6 +3747,36 @@ static struct usb_role_switch_desc role_desc = {
.allow_userspace_control = true,
};
static ssize_t orientation_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct dwc3_msm *mdwc = dev_get_drvdata(dev);
if (mdwc->orientation_override == PHY_LANE_A)
return scnprintf(buf, PAGE_SIZE, "A\n");
if (mdwc->orientation_override == PHY_LANE_B)
return scnprintf(buf, PAGE_SIZE, "B\n");
return scnprintf(buf, PAGE_SIZE, "none\n");
}
static ssize_t orientation_store(struct device *dev,
struct device_attribute *attr, const char *buf, size_t count)
{
struct dwc3_msm *mdwc = dev_get_drvdata(dev);
if (sysfs_streq(buf, "A"))
mdwc->orientation_override = PHY_LANE_A;
else if (sysfs_streq(buf, "B"))
mdwc->orientation_override = PHY_LANE_B;
else
mdwc->orientation_override = ORIENTATION_NONE;
return count;
}
static DEVICE_ATTR_RW(orientation);
static ssize_t mode_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
@ -4392,6 +4425,7 @@ static int dwc3_msm_probe(struct platform_device *pdev)
dwc3_ext_event_notify(mdwc);
}
device_create_file(&pdev->dev, &dev_attr_orientation);
device_create_file(&pdev->dev, &dev_attr_mode);
device_create_file(&pdev->dev, &dev_attr_speed);
device_create_file(&pdev->dev, &dev_attr_bus_vote);