diff options
| -rw-r--r-- | src/drivers/intel/pmc_mux/chip.h | 2 | ||||
| -rw-r--r-- | src/soc/intel/common/block/include/intelblocks/pmc.h | 9 | ||||
| -rw-r--r-- | src/soc/intel/tigerlake/pmc.c | 20 |
3 files changed, 31 insertions, 0 deletions
diff --git a/src/drivers/intel/pmc_mux/chip.h b/src/drivers/intel/pmc_mux/chip.h index dcca2a3ecc..f73a07047f 100644 --- a/src/drivers/intel/pmc_mux/chip.h +++ b/src/drivers/intel/pmc_mux/chip.h @@ -3,6 +3,8 @@ #ifndef __DRIVERS_INTEL_PMC_MUX_H__ #define __DRIVERS_INTEL_PMC_MUX_H__ +extern struct chip_operations drivers_intel_pmc_mux_ops; + struct drivers_intel_pmc_mux_config { }; diff --git a/src/soc/intel/common/block/include/intelblocks/pmc.h b/src/soc/intel/common/block/include/intelblocks/pmc.h index 329bbe9bd7..75e212740d 100644 --- a/src/soc/intel/common/block/include/intelblocks/pmc.h +++ b/src/soc/intel/common/block/include/intelblocks/pmc.h @@ -51,4 +51,13 @@ int pmc_soc_get_resources(struct pmc_resource_config *cfg); /* API to set ACPI mode */ void pmc_set_acpi_mode(void); +/* + * Returns a reference to the PMC MUX device for the given port number. + * Returns NULL if not found or SoC does not support PMC MUX. + * + * Input: Port number (0-based) + * Output: Const pointer to PMC MUX device + */ +const struct device *soc_get_pmc_mux_device(int port_number); + #endif /* SOC_INTEL_COMMON_BLOCK_PMC_H */ diff --git a/src/soc/intel/tigerlake/pmc.c b/src/soc/intel/tigerlake/pmc.c index c24898faf3..84a18e3865 100644 --- a/src/soc/intel/tigerlake/pmc.c +++ b/src/soc/intel/tigerlake/pmc.c @@ -11,6 +11,7 @@ #include <console/console.h> #include <device/mmio.h> #include <device/device.h> +#include <drivers/intel/pmc_mux/chip.h> #include <intelblocks/pmc.h> #include <intelblocks/pmclib.h> #include <intelblocks/rtc.h> @@ -123,6 +124,25 @@ static void soc_pmc_fill_ssdt(const struct device *dev) dev_path(dev)); } +/* By default, TGL uses the PMC MUX for all ports, so port_number is unused */ +const struct device *soc_get_pmc_mux_device(int port_number) +{ + const struct device *pmc; + struct device *child; + + child = NULL; + pmc = pcidev_path_on_root(PCH_DEVFN_PMC); + if (!pmc || !pmc->link_list) + return NULL; + + while ((child = dev_bus_each_child(pmc->link_list, child)) != NULL) + if (child->chip_ops == &drivers_intel_pmc_mux_ops) + break; + + /* child will either be the correct device or NULL if not found */ + return child; +} + struct device_operations pmc_ops = { .read_resources = soc_pmc_read_resources, .set_resources = noop_set_resources, |