diff options
Diffstat (limited to 'common/ioexpander.c')
| -rw-r--r-- | common/ioexpander.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/common/ioexpander.c b/common/ioexpander.c index 6caa7f4bc1..2bed1039f4 100644 --- a/common/ioexpander.c +++ b/common/ioexpander.c @@ -154,6 +154,60 @@ int ioex_get_port(int ioex, int port, int *val) } #endif +int ioex_save_gpio_state(int ioex, int *state, int state_len) +{ + int rv; + const struct ioex_info *g = ioex_list; + const struct ioexpander_drv *drv = ioex_config[ioex].drv; + int state_offset = 0; + + for (int i = 0; i < IOEX_COUNT; i++, g++) { + if (g->ioex != ioex) + continue; + + if (state_offset >= state_len) { + CPRINTS("%s state buffer is too small", __func__); + return EC_ERROR_UNKNOWN; + } + + rv = drv->get_flags_by_mask(g->ioex, g->port, g->mask, + &state[state_offset++]); + if (rv) { + CPRINTS("%s failed to get flags rv=%d", __func__, rv); + return rv; + } + } + + return EC_SUCCESS; +} + +int ioex_restore_gpio_state(int ioex, const int *state, int state_len) +{ + int rv; + const struct ioex_info *g = ioex_list; + const struct ioexpander_drv *drv = ioex_config[ioex].drv; + int state_offset = 0; + + for (int i = 0; i < IOEX_COUNT; i++, g++) { + if (g->ioex != ioex) + continue; + + if (state_offset >= state_len) { + CPRINTS("%s state buffer is too small", __func__); + return EC_ERROR_UNKNOWN; + } + + rv = drv->set_flags_by_mask(g->ioex, g->port, g->mask, + state[state_offset++]); + if (rv) { + CPRINTS("%s failed to set flags rv=%d", __func__, rv); + return rv; + } + } + + return EC_SUCCESS; +} + int ioex_init(int ioex) { const struct ioex_info *g = ioex_list; |