diff options
| author | Sriharsha Allenki <sallenki@codeaurora.org> | 2019-05-14 18:28:23 +0530 |
|---|---|---|
| committer | Sriharsha Allenki <sallenki@codeaurora.org> | 2019-06-04 14:40:53 +0530 |
| commit | 669f50368505b3a67fb81a5ffec4914c5baa8b7f (patch) | |
| tree | 9dfb65cba0a316397803adcc74ee153db04bd52e /include/linux/usb/phy.h | |
| parent | 705aac6195a3dbfcf1ec179ca489cdd5203016aa (diff) | |
usb: dwc3: Support float charger detection
Chargers on some platforms do not support FLOAT charger
detection. On these platforms, the float charger can be
detected depending on the state of the DP and DM lines as
detected by the PHY.
So, on these platforms check for the DP DM line state
and if found floating, do not start the peripheral mode
and notify PMIC -ETIMEDOUT implying the connected
charger is of type float.
Change-Id: I6bf54b0d5c143a849ce9ea7bc515d62204ed2f33
Signed-off-by: Sriharsha Allenki <sallenki@codeaurora.org>
Diffstat (limited to 'include/linux/usb/phy.h')
| -rw-r--r-- | include/linux/usb/phy.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h index d25125402fda..f066d65ac3dd 100644 --- a/include/linux/usb/phy.h +++ b/include/linux/usb/phy.h @@ -126,6 +126,9 @@ struct usb_phy { /* reset the PHY clocks */ int (*reset)(struct usb_phy *x); + + /* return linestate with Idp_src (used for DCD with USB2 PHY) */ + int (*dpdm_with_idp_src)(struct usb_phy *x); }; /** @@ -209,6 +212,15 @@ usb_phy_reset(struct usb_phy *x) return 0; } +static inline int +usb_phy_dpdm_with_idp_src(struct usb_phy *x) +{ + if (x && x->dpdm_with_idp_src) + return x->dpdm_with_idp_src(x); + + return 0; +} + /* for usb host and peripheral controller drivers */ #if IS_ENABLED(CONFIG_USB_PHY) extern struct usb_phy *usb_get_phy(enum usb_phy_type type); |