diff options
| -rw-r--r-- | common/ioexpander.c | 10 | ||||
| -rw-r--r-- | include/ioexpander.h | 2 |
2 files changed, 10 insertions, 2 deletions
diff --git a/common/ioexpander.c b/common/ioexpander.c index ccf3cc7c4a..d3e713a243 100644 --- a/common/ioexpander.c +++ b/common/ioexpander.c @@ -195,6 +195,8 @@ int ioex_init(int ioex) } } + ioex_config[ioex].flags |= IOEX_FLAGS_INITIALIZED; + return EC_SUCCESS; } @@ -202,8 +204,13 @@ static void ioex_init_default(void) { int i; - for (i = 0; i < CONFIG_IO_EXPANDER_PORT_COUNT; i++) + for (i = 0; i < CONFIG_IO_EXPANDER_PORT_COUNT; i++) { + /* IO Expander has been initialized, skip re-initializing */ + if (ioex_config[i].flags & IOEX_FLAGS_INITIALIZED) + continue; + ioex_init(i); + } } DECLARE_HOOK(HOOK_INIT, ioex_init_default, HOOK_PRIO_INIT_I2C + 1); @@ -335,4 +342,3 @@ static int command_ioex_get(int argc, char **argv) DECLARE_SAFE_CONSOLE_COMMAND(ioexget, command_ioex_get, "[name]", "Read level of IO expander pin(s)"); - diff --git a/include/ioexpander.h b/include/ioexpander.h index 4cd1930385..be70346d81 100644 --- a/include/ioexpander.h +++ b/include/ioexpander.h @@ -56,6 +56,8 @@ struct ioexpander_drv { /* IO expander chip disabled. No I2C communication will be attempted. */ #define IOEX_FLAGS_DISABLED BIT(0) +/* IO Expander has been initialized */ +#define IOEX_FLAGS_INITIALIZED BIT(1) struct ioexpander_config_t { /* Physical I2C port connects to the IO expander chip. */ |