diff options
Diffstat (limited to 'src/ec/google/wilco/chip.c')
| -rw-r--r-- | src/ec/google/wilco/chip.c | 105 |
1 files changed, 101 insertions, 4 deletions
diff --git a/src/ec/google/wilco/chip.c b/src/ec/google/wilco/chip.c index 9b0be19f9a..09211f82ab 100644 --- a/src/ec/google/wilco/chip.c +++ b/src/ec/google/wilco/chip.c @@ -14,7 +14,10 @@ */ #include <arch/acpi.h> +#include <arch/acpi_device.h> +#include <arch/acpigen.h> #include <bootstate.h> +#include <cbmem.h> #include <device/pnp.h> #include <ec/acpi/ec.h> #include <pc80/keyboard.h> @@ -25,6 +28,64 @@ #include "ec.h" #include "chip.h" +/* + * The UCSI fields are defined in the UCSI specification at + * https://www.intel.com/content/www/us/en/io/universal-serial-bus/usb-type-c-ucsi-spec.html + * https://www.intel.com/content/www/us/en/io/universal-serial-bus/bios-implementation-of-ucsi.html + */ + +static struct fieldlist ucsi_region_fields[] = { + FIELDLIST_NAMESTR("VER0", 8), + FIELDLIST_NAMESTR("VER1", 8), + FIELDLIST_NAMESTR("RSV0", 8), + FIELDLIST_NAMESTR("RSV1", 8), + FIELDLIST_NAMESTR("CCI0", 8), + FIELDLIST_NAMESTR("CCI1", 8), + FIELDLIST_NAMESTR("CCI2", 8), + FIELDLIST_NAMESTR("CCI3", 8), + FIELDLIST_NAMESTR("CTL0", 8), + FIELDLIST_NAMESTR("CTL1", 8), + FIELDLIST_NAMESTR("CTL2", 8), + FIELDLIST_NAMESTR("CTL3", 8), + FIELDLIST_NAMESTR("CTL4", 8), + FIELDLIST_NAMESTR("CTL5", 8), + FIELDLIST_NAMESTR("CTL6", 8), + FIELDLIST_NAMESTR("CTL7", 8), + FIELDLIST_NAMESTR("MGI0", 8), + FIELDLIST_NAMESTR("MGI1", 8), + FIELDLIST_NAMESTR("MGI2", 8), + FIELDLIST_NAMESTR("MGI3", 8), + FIELDLIST_NAMESTR("MGI4", 8), + FIELDLIST_NAMESTR("MGI5", 8), + FIELDLIST_NAMESTR("MGI6", 8), + FIELDLIST_NAMESTR("MGI7", 8), + FIELDLIST_NAMESTR("MGI8", 8), + FIELDLIST_NAMESTR("MGI9", 8), + FIELDLIST_NAMESTR("MGIA", 8), + FIELDLIST_NAMESTR("MGIB", 8), + FIELDLIST_NAMESTR("MGIC", 8), + FIELDLIST_NAMESTR("MGID", 8), + FIELDLIST_NAMESTR("MGIE", 8), + FIELDLIST_NAMESTR("MGIF", 8), + FIELDLIST_NAMESTR("MGO0", 8), + FIELDLIST_NAMESTR("MGO1", 8), + FIELDLIST_NAMESTR("MGO2", 8), + FIELDLIST_NAMESTR("MGO3", 8), + FIELDLIST_NAMESTR("MGO4", 8), + FIELDLIST_NAMESTR("MGO5", 8), + FIELDLIST_NAMESTR("MGO6", 8), + FIELDLIST_NAMESTR("MGO7", 8), + FIELDLIST_NAMESTR("MGO8", 8), + FIELDLIST_NAMESTR("MGO9", 8), + FIELDLIST_NAMESTR("MGOA", 8), + FIELDLIST_NAMESTR("MGOB", 8), + FIELDLIST_NAMESTR("MGOC", 8), + FIELDLIST_NAMESTR("MGOD", 8), + FIELDLIST_NAMESTR("MGOE", 8), + FIELDLIST_NAMESTR("MGOF", 8), +}; +static const size_t ucsi_region_len = ARRAY_SIZE(ucsi_region_fields); + static void wilco_ec_post_complete(void *unused) { wilco_ec_send(KB_BIOS_PROGRESS, BIOS_PROGRESS_POST_COMPLETE); @@ -111,11 +172,47 @@ static void wilco_ec_read_resources(struct device *dev) wilco_ec_resource(dev, 2, CONFIG_EC_BASE_PACKET, 16); } +static void wilco_ec_fill_ssdt_generator(struct device *dev) +{ + struct opregion opreg; + void *region_ptr; + + if (!dev->enabled) + return; + + region_ptr = cbmem_add(CBMEM_ID_ACPI_UCSI, ucsi_region_len); + if (!region_ptr) + return; + memset(region_ptr, 0, ucsi_region_len); + + opreg.name = "UCSM"; + opreg.regionspace = SYSTEMMEMORY; + opreg.regionoffset = (uintptr_t)region_ptr; + opreg.regionlen = ucsi_region_len; + + acpigen_write_scope(acpi_device_path_join(dev, "UCSI")); + acpigen_write_name("_CRS"); + acpigen_write_resourcetemplate_header(); + acpigen_write_mem32fixed(1, (uintptr_t)region_ptr, ucsi_region_len); + acpigen_write_resourcetemplate_footer(); + acpigen_write_opregion(&opreg); + acpigen_write_field(opreg.name, ucsi_region_fields, ucsi_region_len, + FIELD_ANYACC | FIELD_LOCK | FIELD_PRESERVE); + acpigen_pop_len(); /* Scope */ +} + +static const char *wilco_ec_acpi_name(const struct device *dev) +{ + return "EC0"; +} + static struct device_operations ops = { - .init = wilco_ec_init, - .read_resources = wilco_ec_read_resources, - .enable_resources = DEVICE_NOOP, - .set_resources = DEVICE_NOOP, + .init = wilco_ec_init, + .read_resources = wilco_ec_read_resources, + .enable_resources = DEVICE_NOOP, + .set_resources = DEVICE_NOOP, + .acpi_fill_ssdt_generator = wilco_ec_fill_ssdt_generator, + .acpi_name = wilco_ec_acpi_name, }; static struct pnp_info info[] = { |