diff options
Diffstat (limited to 'src/acpi/pld.c')
| -rw-r--r-- | src/acpi/pld.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/src/acpi/pld.c b/src/acpi/pld.c new file mode 100644 index 0000000000..a2d0dd7fe7 --- /dev/null +++ b/src/acpi/pld.c @@ -0,0 +1,160 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* This file is part of the coreboot project. */ + +#include <stdint.h> +#include <string.h> +#include <acpi/acpi.h> +#include <acpi/acpi_pld.h> + +int acpi_pld_fill_usb(struct acpi_pld *pld, enum acpi_upc_type type, + struct acpi_pld_group *group) +{ + if (!pld) + return -1; + + memset(pld, 0, sizeof(struct acpi_pld)); + + /* Set defaults */ + pld->ignore_color = 1; + pld->panel = PLD_PANEL_UNKNOWN; + pld->vertical_position = PLD_VERTICAL_POSITION_CENTER; + pld->horizontal_position = PLD_HORIZONTAL_POSITION_CENTER; + pld->rotation = PLD_ROTATE_0; + pld->visible = 1; + pld->group.token = group->token; + pld->group.position = group->position; + + /* Set the shape based on port type */ + switch (type) { + case UPC_TYPE_A: + case UPC_TYPE_USB3_A: + case UPC_TYPE_USB3_POWER_B: + pld->shape = PLD_SHAPE_HORIZONTAL_RECTANGLE; + break; + case UPC_TYPE_MINI_AB: + case UPC_TYPE_USB3_B: + pld->shape = PLD_SHAPE_CHAMFERED; + break; + case UPC_TYPE_USB3_MICRO_B: + case UPC_TYPE_USB3_MICRO_AB: + pld->shape = PLD_SHAPE_HORIZONTAL_TRAPEZOID; + break; + case UPC_TYPE_C_USB2_ONLY: + case UPC_TYPE_C_USB2_SS_SWITCH: + case UPC_TYPE_C_USB2_SS: + pld->shape = PLD_SHAPE_OVAL; + break; + case UPC_TYPE_INTERNAL: + default: + pld->shape = PLD_SHAPE_UNKNOWN; + pld->visible = 0; + break; + } + + return 0; +} + +int acpi_pld_to_buffer(const struct acpi_pld *pld, uint8_t *buf, int buf_len) +{ + if (!pld || !buf) + return -1; + + memset(buf, 0, buf_len); + + /* [0] Revision (=2) */ + buf[0] = 0x2; + + if (pld->ignore_color) { + /* [1] Ignore Color */ + buf[0] |= 0x80; + } else { + /* [15:8] Red Color */ + buf[1] = pld->color_red; + /* [23:16] Green Color */ + buf[2] = pld->color_green; + /* [31:24] Blue Color */ + buf[3] = pld->color_blue; + } + + /* [47:32] Width */ + buf[4] = pld->width & 0xff; + buf[5] = pld->width >> 8; + + /* [63:48] Height */ + buf[6] = pld->height & 0xff; + buf[7] = pld->height >> 8; + + /* [64] User Visible */ + buf[8] |= (pld->visible & 0x1); + + /* [65] Dock */ + buf[8] |= (pld->dock & 0x1) << 1; + + /* [66] Lid */ + buf[8] |= (pld->lid & 0x1) << 2; + + /* [69:67] Panel */ + buf[8] |= (pld->panel & 0x7) << 3; + + /* [71:70] Vertical Position */ + buf[8] |= (pld->vertical_position & 0x3) << 6; + + /* [73:72] Horizontal Position */ + buf[9] |= (pld->horizontal_position & 0x3); + + /* [77:74] Shape */ + buf[9] |= (pld->shape & 0xf) << 2; + + /* [78] Orientation */ + buf[9] |= (pld->orientation & 0x1) << 6; + + /* [86:79] Group Token (incorrectly defined as 1 bit in ACPI 6.2A) */ + buf[9] |= (pld->group.token & 0x1) << 7; + buf[10] |= (pld->group.token >> 0x1) & 0x7f; + + /* [94:87] Group Position */ + buf[10] |= (pld->group.position & 0x1) << 7; + buf[11] |= (pld->group.position >> 0x1) & 0x7f; + + /* [95] Bay */ + buf[11] |= (pld->bay & 0x1) << 7; + + /* [96] Ejectable */ + buf[12] |= (pld->ejectable & 0x1); + + /* [97] Ejectable with OSPM help */ + buf[12] |= (pld->ejectable_ospm & 0x1) << 1; + + /* [105:98] Cabinet Number */ + buf[12] |= (pld->cabinet_number & 0x3f) << 2; + buf[13] |= (pld->cabinet_number >> 6) & 0x3; + + /* [113:106] Card Cage Number */ + buf[13] |= (pld->card_cage_number & 0x3f) << 2; + buf[14] |= (pld->card_cage_number >> 6) & 0x3; + + /* [114] PLD is a Reference Shape */ + buf[14] |= (pld->reference_shape & 0x1) << 2; + + /* [118:115] Rotation */ + buf[14] |= (pld->rotation & 0xf) << 3; + + /* [123:119] Draw Order */ + buf[14] |= (pld->draw_order & 0x1) << 7; + buf[15] |= (pld->draw_order >> 1) & 0xf; + + /* [127:124] Reserved */ + + /* Both 16 byte and 20 byte buffers are supported by the spec */ + if (buf_len == 20) { + /* [143:128] Vertical Offset */ + buf[16] = pld->vertical_offset & 0xff; + buf[17] = pld->vertical_offset >> 8; + + /* [159:144] Horizontal Offset */ + buf[18] = pld->horizontal_offset & 0xff; + buf[19] = pld->horizontal_offset >> 8; + } + + return 0; +} |