diff options
| author | Patrick Georgi <pgeorgi@google.com> | 2015-02-16 17:00:59 +0100 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-04-18 08:40:58 +0200 |
| commit | bd6901e18fe2743e69b90dc1e8f96a98e103c3d0 (patch) | |
| tree | 04b33071a8328cf1127cda66af96ae75e664dd59 /payloads/libpayload/drivers/udc/udc.c | |
| parent | ea0bdf2d547dd1ade20880d8e3d39ee0f77fe212 (diff) | |
libpayload udc: Deconfigure device when necessary
SET_CONFIGURATION(0) stops operation and is moves the
device to addressed mode.
BRANCH=none
BUG=none
TEST=USB device mode still works
Change-Id: I964d90ba8440b6f428896acc9fe63e1114390da6
Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Commit-Id: 402bc907222d07765b3438967edf26cc1a79d775
Original-Change-Id: Iebad024e1ed2e344dba73b73a9b385a4ac4cb450
Original-Signed-off-by: Patrick Georgi <pgeorgi@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/250791
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9785
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Diffstat (limited to 'payloads/libpayload/drivers/udc/udc.c')
| -rw-r--r-- | payloads/libpayload/drivers/udc/udc.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/payloads/libpayload/drivers/udc/udc.c b/payloads/libpayload/drivers/udc/udc.c index 89a7d1dac2..9694ff8ec1 100644 --- a/payloads/libpayload/drivers/udc/udc.c +++ b/payloads/libpayload/drivers/udc/udc.c @@ -81,12 +81,8 @@ static struct usbdev_configuration *fetch_config(struct usbdev_ctrl *this, return NULL; } -static void enable_interface(struct usbdev_ctrl *this, int iface_num) +static void cease_operation(struct usbdev_ctrl *this) { - struct usbdev_configuration *config = this->current_config; - struct usbdev_interface *iface = &config->interfaces[iface_num]; - - /* first: shut down all endpoints except EP0 */ int i; for (i = 1; i < 16; i++) { /* disable endpoints */ @@ -94,8 +90,19 @@ static void enable_interface(struct usbdev_ctrl *this, int iface_num) this->halt_ep(this, i, 1); } +} + +static void enable_interface(struct usbdev_ctrl *this, int iface_num) +{ + struct usbdev_configuration *config = this->current_config; + struct usbdev_interface *iface = &config->interfaces[iface_num]; + + /* first: shut down all endpoints except EP0 */ + cease_operation(this); + /* now enable all configured endpoints */ int epcount = iface->descriptor.bNumEndpoints; + int i; for (i = 0; i < epcount; i++) { int ep = iface->eps[i].bEndpointAddress; int mps = iface->eps[i].wMaxPacketSize; @@ -139,8 +146,7 @@ static int setup_ep0(struct usbdev_ctrl *this, dev_req_t *dr) this->current_config_id = dr->wValue; if (dr->wValue == 0) - // TODO: reset device - return 1; + cease_operation(this); if (config == NULL) { this->stall(this, 0, 0, 1); |