diff options
| -rw-r--r-- | src/drivers/intel/dptf/Kconfig | 7 | ||||
| -rw-r--r-- | src/drivers/intel/dptf/Makefile.inc | 1 | ||||
| -rw-r--r-- | src/drivers/intel/dptf/chip.h | 9 | ||||
| -rw-r--r-- | src/drivers/intel/dptf/dptf.c | 56 |
4 files changed, 73 insertions, 0 deletions
diff --git a/src/drivers/intel/dptf/Kconfig b/src/drivers/intel/dptf/Kconfig new file mode 100644 index 0000000000..7db335ac1c --- /dev/null +++ b/src/drivers/intel/dptf/Kconfig @@ -0,0 +1,7 @@ +config DRIVERS_INTEL_DPTF + bool "Support runtime generation of Intel DPTF ACPI tables" + depends on HAVE_ACPI_TABLES + default n + help + When enabled, entries in the devicetree are used to generate + Intel DPTF Tables at runtime in the SSDT. diff --git a/src/drivers/intel/dptf/Makefile.inc b/src/drivers/intel/dptf/Makefile.inc new file mode 100644 index 0000000000..42607f8a54 --- /dev/null +++ b/src/drivers/intel/dptf/Makefile.inc @@ -0,0 +1 @@ +ramstage-$(CONFIG_DRIVERS_INTEL_DPTF) += dptf.c diff --git a/src/drivers/intel/dptf/chip.h b/src/drivers/intel/dptf/chip.h new file mode 100644 index 0000000000..704b83e763 --- /dev/null +++ b/src/drivers/intel/dptf/chip.h @@ -0,0 +1,9 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#ifndef _DRIVERS_INTEL_DPTF_CHIP_H_ +#define _DRIVERS_INTEL_DPTF_CHIP_H_ + +struct drivers_intel_dptf_config { +}; + +#endif /* _DRIVERS_INTEL_DPTF_CHIP_H_ */ diff --git a/src/drivers/intel/dptf/dptf.c b/src/drivers/intel/dptf/dptf.c new file mode 100644 index 0000000000..f168375448 --- /dev/null +++ b/src/drivers/intel/dptf/dptf.c @@ -0,0 +1,56 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ + +#include <acpi/acpigen.h> +#include <console/console.h> +#include <device/device.h> +#include "chip.h" + +static const char *dptf_acpi_name(const struct device *dev) +{ + return "DPTF"; +} + +/* Add custom tables and methods to SSDT */ +static void dptf_fill_ssdt(const struct device *dev) +{ + struct drivers_intel_dptf_config *config = dev->chip_info; + + printk(BIOS_INFO, "\\_SB.DPTF: %s at %s\n", dev->chip_ops->name, dev_path(dev)); +} + +/* Add static definitions of DPTF devices into the DSDT */ +static void dptf_inject_dsdt(const struct device *dev) +{ + const struct drivers_intel_dptf_config *config; + + config = dev->chip_info; + acpigen_write_scope("\\_SB"); + + /* Toplevel DPTF device */ + acpigen_write_device(acpi_device_name(dev)); + acpigen_write_name("_HID"); + acpigen_emit_eisaid("INT3400"); + acpigen_write_name_integer("_UID", 0); + dptf_write_STA(); + + acpigen_pop_len(); /* DPTF Device */ + acpigen_pop_len(); /* Scope */ +} + +static struct device_operations dptf_ops = { + .read_resources = noop_read_resources, + .set_resources = noop_set_resources, + .acpi_name = dptf_acpi_name, + .acpi_fill_ssdt = dptf_fill_ssdt, + .acpi_inject_dsdt = dptf_inject_dsdt, +}; + +static void dptf_enable_dev(struct device *dev) +{ + dev->ops = &dptf_ops; +} + +struct chip_operations drivers_intel_dptf_ops = { + CHIP_NAME("Intel DPTF") + .enable_dev = dptf_enable_dev, +}; |