diff options
Diffstat (limited to 'include/ioexpander.h')
| -rw-r--r-- | include/ioexpander.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/ioexpander.h b/include/ioexpander.h index e9499d27bd..4024a5a267 100644 --- a/include/ioexpander.h +++ b/include/ioexpander.h @@ -59,6 +59,12 @@ struct ioexpander_drv { /* IO Expander has been initialized */ #define IOEX_FLAGS_INITIALIZED BIT(1) +/* + * BITS 24 to 31 are used by io-expander drivers that need to control multiple + * devices + */ +#define IOEX_FLAGS_CUSTOM_BIT(x) BUILD_CHECK_INLINE(BIT(x), BIT(x) & 0xff000000) + struct ioexpander_config_t { /* Physical I2C port connects to the IO expander chip. */ int i2c_host_port; @@ -92,6 +98,16 @@ int ioex_enable_interrupt(enum ioex_signal signal); int ioex_disable_interrupt(enum ioex_signal signal); /* + * Get io expander flags (IOEX_FLAGS_*) for chip that specified IOEX signal + * belongs to. They contain information if port was disabled or initialized. + * + * @param signal IOEX signal that belongs to chip which flags will be returned + * @param val Pointer to memory where flags will be stored + * @return EC_SUCCESS if successful, non-zero if error. + */ +int ioex_get_ioex_flags(enum ioex_signal signal, int *val); + +/* * Get flags for the IOEX signal * * @param signal IOEX signal to get flags for |