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| author | Diana Z <dzigterman@chromium.org> | 2021-07-21 09:56:40 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2021-08-14 06:06:39 +0000 |
| commit | ab1cdf1648d390619848f4f4f901b14aeee75244 (patch) | |
| tree | 74b814ec98390eabb46c4a012adbc501c70e9df2 /driver/usb_mux/it5205.c | |
| parent | 80b43435ca89510e985481b725a470566fb65a05 (diff) | |
| download | chrome-ec-ab1cdf1648d390619848f4f4f901b14aeee75244.tar.gz | |
USB MUX: Generalize mux ACK
Currently, only the virtual mux driver uses the mux ACK feature, but the
actual wait for the host command ACK is a part of the usb_mux general
code. Generalize this mux ACK wait so it's available if needed in the
future for more muxes.
Additionally, moving this wait out of the mux set will allow us to lock
the muxes intelligently between tasks, without keeping the muxes locked
during the inactive ACK wait.
BRANCH=None
BUG=b:172222942,b:186777984
TEST=tast typec.Mode*.manual on voxel
Signed-off-by: Diana Z <dzigterman@chromium.org>
Change-Id: I61a043425a482cc6f3170548c888d91ec20c2a82
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3078411
Reviewed-by: Keith Short <keithshort@chromium.org>
Diffstat (limited to 'driver/usb_mux/it5205.c')
| -rw-r--r-- | driver/usb_mux/it5205.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/driver/usb_mux/it5205.c b/driver/usb_mux/it5205.c index f275568313..0cfecdeda0 100644 --- a/driver/usb_mux/it5205.c +++ b/driver/usb_mux/it5205.c @@ -91,10 +91,14 @@ enum ec_error_list it5205h_enable_csbu_switch(const struct usb_mux *me, bool en) } /* Writes control register to set switch mode */ -static int it5205_set_mux(const struct usb_mux *me, mux_state_t mux_state) +static int it5205_set_mux(const struct usb_mux *me, mux_state_t mux_state, + bool *ack_required) { uint8_t reg; + /* This driver does not use host command ACKs */ + *ack_required = false; + switch (mux_state & MUX_STATE_DP_USB_MASK) { case USB_PD_MUX_USB_ENABLED: reg = IT5205_USB; |