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authorHeikki Krogerus <heikki.krogerus@nokia.com>2010-11-08 12:22:40 +0200
committerAnton Vorontsov <cbouatmailru@gmail.com>2010-11-18 16:56:21 +0300
commite1a85694e08d03efae9e08fdb292dfd4870837bc (patch)
tree5909033ce66fa7f3ce108cb87e16fb1eadbf1da3 /drivers/power/isp1704_charger.c
parenta4607d9f5cbae1aad7f86e8204b57d66c0e14e36 (diff)
downloadlinux-e1a85694e08d03efae9e08fdb292dfd4870837bc.tar.bz2
isp1704_charger: Detect charger after probe
If the device is booted up with cable connected, or the module is loaded after plugging in the cable, the notification has come and gone, so not relying on it at probe time. Instead this checks the VBUS level manually after probe. Signed-off-by: Heikki Krogerus <heikki.krogerus@nokia.com> Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>
Diffstat (limited to 'drivers/power/isp1704_charger.c')
-rw-r--r--drivers/power/isp1704_charger.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/power/isp1704_charger.c b/drivers/power/isp1704_charger.c
index 77c11f1d72e2..2ad9b14a5ce3 100644
--- a/drivers/power/isp1704_charger.c
+++ b/drivers/power/isp1704_charger.c
@@ -422,6 +422,23 @@ static int __devinit isp1704_charger_probe(struct platform_device *pdev)
dev_info(isp->dev, "registered with product id %s\n", isp->model);
+ /*
+ * Taking over the D+ pullup.
+ *
+ * FIXME: The device will be disconnected if it was already
+ * enumerated. The charger driver should be always loaded before any
+ * gadget is loaded.
+ */
+ if (isp->otg->gadget)
+ usb_gadget_disconnect(isp->otg->gadget);
+
+ /* Detect charger if VBUS is valid (the cable was already plugged). */
+ ret = otg_io_read(isp->otg, ULPI_USB_INT_STS);
+ if ((ret & ULPI_INT_VBUS_VALID) && !isp->otg->default_a) {
+ isp->event = USB_EVENT_VBUS;
+ schedule_work(&isp->work);
+ }
+
return 0;
fail2:
power_supply_unregister(&isp->psy);