Tim Wawrzynczak | e184e39 | 2020-05-14 10:23:19 -0600 | [diff] [blame^] | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| 2 | |
| 3 | #include <acpi/acpigen.h> |
| 4 | #include <console/console.h> |
| 5 | #include <intelblocks/acpi.h> |
| 6 | #include "chip.h" |
| 7 | |
| 8 | static const char *con_acpi_name(const struct device *dev) |
| 9 | { |
| 10 | static char name[5]; |
| 11 | snprintf(name, sizeof(name), "CON%1X", dev->path.generic.id); |
| 12 | return name; |
| 13 | } |
| 14 | |
| 15 | static const char *orientation_to_str(enum typec_orientation ori) |
| 16 | { |
| 17 | switch (ori) { |
| 18 | case TYPEC_ORIENTATION_NORMAL: |
| 19 | return "normal"; |
| 20 | case TYPEC_ORIENTATION_REVERSE: |
| 21 | return "reverse"; |
| 22 | case TYPEC_ORIENTATION_FOLLOW_CC: /* Intentional fallthrough */ |
| 23 | default: |
| 24 | return ""; |
| 25 | } |
| 26 | } |
| 27 | |
| 28 | static void con_fill_ssdt(const struct device *dev) |
| 29 | { |
| 30 | struct drivers_intel_pmc_mux_con_config *config = dev->chip_info; |
| 31 | struct acpi_dp *dsd; |
| 32 | |
| 33 | if (!dev->enabled) |
| 34 | return; |
| 35 | |
| 36 | /* Reference the existing scope and write CONx device */ |
| 37 | acpigen_write_scope(acpi_device_scope(dev)); |
| 38 | acpigen_write_device(acpi_device_name(dev)); |
| 39 | |
| 40 | acpigen_write_name_integer("_ADR", dev->path.generic.id); |
| 41 | |
| 42 | /* _DSD, Device-Specific Data */ |
| 43 | dsd = acpi_dp_new_table("_DSD"); |
| 44 | acpi_dp_add_integer(dsd, "usb2-port-number", config->usb2_port_number); |
| 45 | acpi_dp_add_integer(dsd, "usb3-port-number", config->usb3_port_number); |
| 46 | |
| 47 | /* |
| 48 | * The kernel assumes that these Type-C signals (SBUs and HSLs) follow the CC lines, |
| 49 | * unless they are explicitly called out otherwise. |
| 50 | */ |
| 51 | if (config->sbu_orientation != TYPEC_ORIENTATION_FOLLOW_CC) |
| 52 | acpi_dp_add_string(dsd, "sbu-orientation", |
| 53 | orientation_to_str(config->sbu_orientation)); |
| 54 | |
| 55 | if (config->hsl_orientation != TYPEC_ORIENTATION_FOLLOW_CC) |
| 56 | acpi_dp_add_string(dsd, "hsl-orientation", |
| 57 | orientation_to_str(config->hsl_orientation)); |
| 58 | |
| 59 | acpi_dp_write(dsd); |
| 60 | |
| 61 | acpigen_pop_len(); /* CONx Device */ |
| 62 | acpigen_pop_len(); /* Scope */ |
| 63 | |
| 64 | printk(BIOS_INFO, "%s: %s at %s\n", acpi_device_path(dev), dev->chip_ops->name, |
| 65 | dev_path(dev)); |
| 66 | } |
| 67 | |
| 68 | static struct device_operations con_dev_ops = { |
| 69 | .read_resources = noop_read_resources, |
| 70 | .set_resources = noop_set_resources, |
| 71 | .acpi_name = con_acpi_name, |
| 72 | .acpi_fill_ssdt = con_fill_ssdt, |
| 73 | }; |
| 74 | |
| 75 | static void con_enable(struct device *dev) |
| 76 | { |
| 77 | dev->ops = &con_dev_ops; |
| 78 | } |
| 79 | |
| 80 | struct chip_operations drivers_intel_pmc_mux_con_ops = { |
| 81 | CHIP_NAME("Intel PMC MUX CON Driver") |
| 82 | .enable_dev = con_enable, |
| 83 | }; |