diff options
| author | Rakesh Bodla <rbodla@nvidia.com> | 2014-07-01 18:08:36 +0530 |
|---|---|---|
| committer | Riham Haidar <rhaidar@nvidia.com> | 2014-07-10 14:01:27 -0700 |
| commit | 7b61eb02ea2360e3bf19a06a066edeede599dfa3 (patch) | |
| tree | 3f1962ced2c6d320b7d9ca77bf7f0a27b9a6351f /drivers/usb/gadget | |
| parent | ebe230b32711a0ae979f217aeab8b302dc7f3c83 (diff) | |
usb: gadget: tegra: handle the case when host reboots
Some hosts during booting first supply vbus and then
send setup packets after x seconds. In this case we detect
as non-standard. Handle this case by setting to SDP.
Also adding condition to avoid unnecessary icon
notifications.
Bug 200017121
Change-Id: I1f0d9a2e2725a0cd3a4324f5208764ee2e4978cf
Signed-off-by: Rakesh Bodla <rbodla@nvidia.com>
Reviewed-on: http://git-master/r/433179
(cherry picked from commit 1073c32cebc1314e4d3be7967d707a743ded05ea)
Reviewed-on: http://git-master/r/436033
Reviewed-by: Venkat Moganty <vmoganty@nvidia.com>
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Diffstat (limited to 'drivers/usb/gadget')
| -rw-r--r-- | drivers/usb/gadget/tegra_udc.c | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/drivers/usb/gadget/tegra_udc.c b/drivers/usb/gadget/tegra_udc.c index 36deb861cc3a..d8efe20d5bb8 100644 --- a/drivers/usb/gadget/tegra_udc.c +++ b/drivers/usb/gadget/tegra_udc.c @@ -1478,7 +1478,6 @@ static int tegra_usb_set_charging_current(struct tegra_udc *udc) 0, max_ua); } - if (!udc->vbus_in_lp0) { tegra_udc_set_extcon_state(udc); udc->connect_type_lp0 = CONNECT_TYPE_NONE; @@ -1574,6 +1573,7 @@ static int tegra_vbus_session(struct usb_gadget *gadget, int is_active) spin_unlock_irqrestore(&udc->lock, flags); tegra_usb_phy_power_off(udc->phy); tegra_usb_set_charging_current(udc); + udc->current_limit = 0; } else if (!udc->vbus_active && is_active) { tegra_usb_phy_power_on(udc->phy); /* setup the controller in the device mode */ @@ -1611,8 +1611,19 @@ static int tegra_vbus_draw(struct usb_gadget *gadget, unsigned mA) udc = container_of(gadget, struct tegra_udc, gadget); - udc->current_limit = mA; - schedule_work(&udc->current_work); + /* Some hosts during booting first supply vbus and then + send setup packets after x seconds. In this case we detect + as non-standard. Handle this case by setting to SDP */ + if (udc->connect_type != CONNECT_TYPE_NONE + && udc->connect_type != CONNECT_TYPE_SDP + && udc->connect_type != CONNECT_TYPE_CDP) + tegra_udc_set_charger_type(udc, CONNECT_TYPE_SDP); + + /* Avoid unnecessary work if there is no change in current limit */ + if (udc->current_limit != mA) { + udc->current_limit = mA; + schedule_work(&udc->current_work); + } if (udc->transceiver) return usb_phy_set_power(udc->transceiver, mA); |