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| author | Wai-Hong Tam <waihong@google.com> | 2020-11-18 09:53:41 -0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-11-18 22:05:47 +0000 |
| commit | fac6e6f768d6525bf048d32d8e7a8a6c0c29c289 (patch) | |
| tree | 3aeb8e71d2f1ab2133067c1bf2ec886565445b94 /board/lazor/board.c | |
| parent | 9843eb21f89aae8bb71b1fe9f5390e7f709abf5b (diff) | |
| download | chrome-ec-fac6e6f768d6525bf048d32d8e7a8a6c0c29c289.tar.gz | |
Trogdor: Add the interrupt for USB-A overcurrent
The USB-A VBUS is through a load switch. The FAULT_L pin of
the load switch requires an external pull-up. Apply the pull-up
on EC side.
Add the interrupt of the FAULT_L pin. Route to the function
board_overcurrent_event(), which currently prints an error
message.
BRANCH=Trogdor
BUG=b:173154219
TEST=Plugged a USB load >1.5A to the USB-A port and checked
the error message was printed:
[73.738372 p2: overcurrent!]
Change-Id: I5f5f82de942eaf26a33051ad17f14b90d8024b89
Signed-off-by: Wai-Hong Tam <waihong@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2547190
Reviewed-by: Alexandru M Stan <amstan@chromium.org>
Diffstat (limited to 'board/lazor/board.c')
| -rw-r--r-- | board/lazor/board.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/board/lazor/board.c b/board/lazor/board.c index da6e3b25a5..6e0d60935a 100644 --- a/board/lazor/board.c +++ b/board/lazor/board.c @@ -30,6 +30,7 @@ #include "switch.h" #include "tablet_mode.h" #include "task.h" +#include "usbc_ocp.h" #include "usbc_ppc.h" #define CPRINTS(format, args...) cprints(CC_USBCHARGE, format, ## args) @@ -39,6 +40,7 @@ static void tcpc_alert_event(enum gpio_signal signal); static void usb0_evt(enum gpio_signal signal); static void usb1_evt(enum gpio_signal signal); +static void usba_oc_interrupt(enum gpio_signal signal); static void ppc_interrupt(enum gpio_signal signal); static void board_connect_c0_sbu(enum gpio_signal s); static void switchcap_interrupt(enum gpio_signal signal); @@ -76,6 +78,19 @@ static void usb1_evt(enum gpio_signal signal) task_set_event(TASK_ID_USB_CHG_P1, USB_CHG_EVENT_BC12, 0); } +static void usba_oc_deferred(void) +{ + /* Use next number after all USB-C ports to indicate the USB-A port */ + board_overcurrent_event(CONFIG_USB_PD_PORT_MAX_COUNT, + !gpio_get_level(GPIO_USB_A0_OC_ODL)); +} +DECLARE_DEFERRED(usba_oc_deferred); + +static void usba_oc_interrupt(enum gpio_signal signal) +{ + hook_call_deferred(&usba_oc_deferred_data, 0); +} + static void ppc_interrupt(enum gpio_signal signal) { switch (signal) { @@ -522,6 +537,9 @@ static void board_init(void) gpio_enable_interrupt(GPIO_USB_C0_BC12_INT_L); gpio_enable_interrupt(GPIO_USB_C1_BC12_INT_L); + /* Enable USB-A overcurrent interrupt */ + gpio_enable_interrupt(GPIO_USB_A0_OC_ODL); + /* * The H1 SBU line for CCD are behind PPC chip. The PPC internal FETs * for SBU may be disconnected after DP alt mode is off. Should enable |