diff options
Diffstat (limited to 'src/soc/amd/common/block/lpc/espi_util.c')
| -rw-r--r-- | src/soc/amd/common/block/lpc/espi_util.c | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/src/soc/amd/common/block/lpc/espi_util.c b/src/soc/amd/common/block/lpc/espi_util.c index 519130a653..81056b0222 100644 --- a/src/soc/amd/common/block/lpc/espi_util.c +++ b/src/soc/amd/common/block/lpc/espi_util.c @@ -683,6 +683,29 @@ static void espi_set_op_freq_config(enum espi_op_freq mb_op_freq, uint32_t slave } } +static void espi_set_alert_pin_config(enum espi_alert_pin alert_pin, uint32_t slave_caps, + uint32_t *slave_config, uint32_t *ctrlr_config) +{ + switch (alert_pin) { + case ESPI_ALERT_PIN_IN_BAND: + *slave_config |= ESPI_SLAVE_ALERT_MODE_IO1; + return; + case ESPI_ALERT_PIN_PUSH_PULL: + *slave_config |= ESPI_SLAVE_ALERT_MODE_PIN | ESPI_SLAVE_PUSH_PULL_ALERT_SEL; + *ctrlr_config |= ESPI_ALERT_MODE; + return; + case ESPI_ALERT_PIN_OPEN_DRAIN: + if (!(slave_caps & ESPI_SLAVE_OPEN_DRAIN_ALERT_SUPP)) + die("eSPI peripheral does not support open drain alert!"); + + *slave_config |= ESPI_SLAVE_ALERT_MODE_PIN | ESPI_SLAVE_OPEN_DRAIN_ALERT_SEL; + *ctrlr_config |= ESPI_ALERT_MODE; + return; + default: + die("Unknown espi alert config: %u!\n", alert_pin); + } +} + static int espi_set_general_configuration(const struct espi_config *mb_cfg, uint32_t slave_caps) { uint32_t slave_config = 0; @@ -693,11 +716,7 @@ static int espi_set_general_configuration(const struct espi_config *mb_cfg, uint ctrlr_config |= ESPI_CRC_CHECKING_EN; } - if (mb_cfg->dedicated_alert_pin) { - slave_config |= ESPI_SLAVE_ALERT_MODE_PIN; - ctrlr_config |= ESPI_ALERT_MODE; - } - + espi_set_alert_pin_config(mb_cfg->alert_pin, slave_caps, &slave_config, &ctrlr_config); espi_set_io_mode_config(mb_cfg->io_mode, slave_caps, &slave_config, &ctrlr_config); espi_set_op_freq_config(mb_cfg->op_freq_mhz, slave_caps, &slave_config, &ctrlr_config); |