| /* |
| * |
| * SPDX-License-Identifier: GPL-2.0-or-later |
| */ |
| |
| #include <acpi/acpi.h> |
| #include <acpi/acpigen.h> |
| #include <acpi/acpigen_ps2_keybd.h> |
| #include <console/console.h> |
| #include <input-event-codes.h> |
| |
| #define KEYMAP(scancode, keycode) (((uint32_t)(scancode) << 16) | (keycode & 0xFFFF)) |
| #define SCANCODE(keymap) ((keymap >> 16) & 0xFFFF) |
| |
| /* Possible keymaps for function keys in the top row */ |
| static const uint32_t function_keymaps[] = { |
| KEYMAP(0x3b, KEY_F1), |
| KEYMAP(0x3c, KEY_F2), |
| KEYMAP(0x3d, KEY_F3), |
| KEYMAP(0x3e, KEY_F4), |
| KEYMAP(0x3f, KEY_F5), |
| KEYMAP(0x40, KEY_F6), |
| KEYMAP(0x41, KEY_F7), |
| KEYMAP(0x42, KEY_F8), |
| KEYMAP(0x43, KEY_F9), |
| KEYMAP(0x44, KEY_F10), |
| KEYMAP(0x57, KEY_F11), |
| KEYMAP(0x58, KEY_F12), |
| KEYMAP(0x59, KEY_F13), |
| KEYMAP(0x5a, KEY_F14), |
| KEYMAP(0x5b, KEY_F15), |
| }; |
| |
| /* |
| * Possible keymaps for action keys in the top row. This is a superset of |
| * possible keys. Individual keyboards will have a subset of these keys. |
| * The scancodes are true / condensed 1 byte scancodes from set-1 |
| */ |
| static const uint32_t action_keymaps[] = { |
| [PS2_KEY_BACK] = KEYMAP(0xea, KEY_BACK), /* e06a */ |
| [PS2_KEY_FORWARD] = KEYMAP(0xe9, KEY_FORWARD), /* e069 */ |
| [PS2_KEY_REFRESH] = KEYMAP(0xe7, KEY_REFRESH), /* e067 */ |
| [PS2_KEY_FULLSCREEN] = KEYMAP(0x91, KEY_FULL_SCREEN), /* e011 */ |
| [PS2_KEY_OVERVIEW] = KEYMAP(0x92, KEY_SCALE), /* e012 */ |
| [PS2_KEY_VOL_MUTE] = KEYMAP(0xa0, KEY_MUTE), /* e020 */ |
| [PS2_KEY_VOL_DOWN] = KEYMAP(0xae, KEY_VOLUMEDOWN), /* e02e */ |
| [PS2_KEY_VOL_UP] = KEYMAP(0xb0, KEY_VOLUMEUP), /* e030 */ |
| [PS2_KEY_PLAY_PAUSE] = KEYMAP(0x9a, KEY_PLAYPAUSE), /* e01a */ |
| [PS2_KEY_NEXT_TRACK] = KEYMAP(0x99, KEY_NEXTSONG), /* e019 */ |
| [PS2_KEY_PREV_TRACK] = KEYMAP(0x90, KEY_PREVIOUSSONG), /* e010 */ |
| [PS2_KEY_SNAPSHOT] = KEYMAP(0x93, KEY_SYSRQ), /* e013 */ |
| [PS2_KEY_BRIGHTNESS_DOWN] = KEYMAP(0x94, KEY_BRIGHTNESSDOWN),/* e014 */ |
| [PS2_KEY_BRIGHTNESS_UP] = KEYMAP(0x95, KEY_BRIGHTNESSUP), /* e015 */ |
| [PS2_KEY_KBD_BKLIGHT_DOWN] = KEYMAP(0x97, KEY_KBDILLUMDOWN), /* e017 */ |
| [PS2_KEY_KBD_BKLIGHT_UP] = KEYMAP(0x98, KEY_KBDILLUMUP), /* e018 */ |
| [PS2_KEY_PRIVACY_SCRN_TOGGLE] = KEYMAP(0x96, /* e016 */ |
| KEY_PRIVACY_SCREEN_TOGGLE), |
| }; |
| |
| /* Keymap for numeric keypad keys */ |
| static uint32_t numeric_keypad_keymaps[] = { |
| /* Row-0 */ |
| KEYMAP(0xc9, KEY_PAGEUP), |
| KEYMAP(0xd1, KEY_PAGEDOWN), |
| KEYMAP(0xc7, KEY_HOME), |
| KEYMAP(0xcf, KEY_END), |
| /* Row-1 */ |
| KEYMAP(0xd3, KEY_DELETE), |
| KEYMAP(0xb5, KEY_KPSLASH), |
| KEYMAP(0x37, KEY_KPASTERISK), |
| KEYMAP(0x4a, KEY_KPMINUS), |
| /* Row-2 */ |
| KEYMAP(0x47, KEY_KP7), |
| KEYMAP(0x48, KEY_KP8), |
| KEYMAP(0x49, KEY_KP9), |
| KEYMAP(0x4e, KEY_KPPLUS), |
| /* Row-3 */ |
| KEYMAP(0x4b, KEY_KP4), |
| KEYMAP(0x4c, KEY_KP5), |
| KEYMAP(0x4d, KEY_KP6), |
| /* Row-4 */ |
| KEYMAP(0x4f, KEY_KP1), |
| KEYMAP(0x50, KEY_KP2), |
| KEYMAP(0x51, KEY_KP3), |
| KEYMAP(0x9c, KEY_KPENTER), |
| /* Row-5 */ |
| KEYMAP(0x52, KEY_KP0), |
| KEYMAP(0x53, KEY_KPDOT), |
| }; |
| |
| /* |
| * Keymap for rest of non-top-row keys. This is a superset of all the possible |
| * keys that any chromeos keyboards can have. |
| */ |
| static uint32_t rest_of_keymaps[] = { |
| /* Row-0 */ |
| KEYMAP(0x01, KEY_ESC), |
| /* Row-1 */ |
| KEYMAP(0x29, KEY_GRAVE), |
| KEYMAP(0x02, KEY_1), |
| KEYMAP(0x03, KEY_2), |
| KEYMAP(0x04, KEY_3), |
| KEYMAP(0x05, KEY_4), |
| KEYMAP(0x06, KEY_5), |
| KEYMAP(0x07, KEY_6), |
| KEYMAP(0x08, KEY_7), |
| KEYMAP(0x09, KEY_8), |
| KEYMAP(0x0a, KEY_9), |
| KEYMAP(0x0b, KEY_0), |
| KEYMAP(0x0c, KEY_MINUS), |
| KEYMAP(0x0d, KEY_EQUAL), |
| KEYMAP(0x7d, KEY_YEN), /* JP keyboards only */ |
| KEYMAP(0x0e, KEY_BACKSPACE), |
| /* Row-2 */ |
| KEYMAP(0x0f, KEY_TAB), |
| KEYMAP(0x10, KEY_Q), |
| KEYMAP(0x11, KEY_W), |
| KEYMAP(0x12, KEY_E), |
| KEYMAP(0x13, KEY_R), |
| KEYMAP(0x14, KEY_T), |
| KEYMAP(0x15, KEY_Y), |
| KEYMAP(0x16, KEY_U), |
| KEYMAP(0x17, KEY_I), |
| KEYMAP(0x18, KEY_O), |
| KEYMAP(0x19, KEY_P), |
| KEYMAP(0x1a, KEY_LEFTBRACE), |
| KEYMAP(0x1b, KEY_RIGHTBRACE), |
| KEYMAP(0x2b, KEY_BACKSLASH), |
| /* Row-3 */ |
| KEYMAP(0xdb, KEY_LEFTMETA), /* Search Key */ |
| KEYMAP(0x1e, KEY_A), |
| KEYMAP(0x1f, KEY_S), |
| KEYMAP(0x20, KEY_D), |
| KEYMAP(0x21, KEY_F), |
| KEYMAP(0x22, KEY_G), |
| KEYMAP(0x23, KEY_H), |
| KEYMAP(0x24, KEY_J), |
| KEYMAP(0x25, KEY_K), |
| KEYMAP(0x26, KEY_L), |
| KEYMAP(0x27, KEY_SEMICOLON), |
| KEYMAP(0x28, KEY_APOSTROPHE), |
| KEYMAP(0x1c, KEY_ENTER), |
| /* Row-4 */ |
| KEYMAP(0x2a, KEY_LEFTSHIFT), |
| KEYMAP(0x56, KEY_102ND), /* UK keyboards only */ |
| KEYMAP(0x2c, KEY_Z), |
| KEYMAP(0x2d, KEY_X), |
| KEYMAP(0x2e, KEY_C), |
| KEYMAP(0x2f, KEY_V), |
| KEYMAP(0x30, KEY_B), |
| KEYMAP(0x31, KEY_N), |
| KEYMAP(0x32, KEY_M), |
| KEYMAP(0x33, KEY_COMMA), |
| KEYMAP(0x34, KEY_DOT), |
| KEYMAP(0x35, KEY_SLASH), |
| KEYMAP(0x73, KEY_RO), /* JP keyboards only */ |
| KEYMAP(0x36, KEY_RIGHTSHIFT), |
| /* Row-5 */ |
| KEYMAP(0x1d, KEY_LEFTCTRL), |
| KEYMAP(0x38, KEY_LEFTALT), |
| KEYMAP(0x7b, KEY_MUHENKAN), /* JP keyboards only */ |
| KEYMAP(0x39, KEY_SPACE), |
| KEYMAP(0x79, KEY_HENKAN), /* JP keyboards only */ |
| KEYMAP(0xb8, KEY_RIGHTALT), |
| KEYMAP(0x9d, KEY_RIGHTCTRL), |
| /* Arrow keys */ |
| KEYMAP(0xcb, KEY_LEFT), |
| KEYMAP(0xd0, KEY_DOWN), |
| KEYMAP(0xcd, KEY_RIGHT), |
| KEYMAP(0xc8, KEY_UP), |
| /* Power Key */ |
| KEYMAP(0xde, KEY_POWER), |
| }; |
| |
| static void ssdt_generate_physmap(struct acpi_dp *dp, uint8_t num_top_row_keys, |
| enum ps2_action_key action_keys[]) |
| { |
| struct acpi_dp *dp_array; |
| enum ps2_action_key key; |
| uint32_t keymap, i; |
| |
| dp_array = acpi_dp_new_table("function-row-physmap"); |
| if (!dp_array) { |
| printk(BIOS_ERR, "PS2K: couldn't write function-row-physmap\n"); |
| return; |
| } |
| |
| printk(BIOS_INFO, "PS2K: Physmap: ["); |
| for (i = 0; i < num_top_row_keys; i++) { |
| key = action_keys[i]; |
| if (key && key < ARRAY_SIZE(action_keymaps)) { |
| keymap = action_keymaps[key]; |
| } else { |
| keymap = 0; |
| printk(BIOS_ERR, |
| "PS2K: invalid top-action-key-%u: %u(skipped)\n", |
| i, key); |
| } |
| acpi_dp_add_integer(dp_array, NULL, SCANCODE(keymap)); |
| printk(BIOS_INFO, " %X", SCANCODE(keymap)); |
| } |
| |
| printk(BIOS_INFO, " ]\n"); |
| acpi_dp_add_array(dp, dp_array); |
| } |
| |
| static void ssdt_generate_keymap(struct acpi_dp *dp, uint8_t num_top_row_keys, |
| enum ps2_action_key action_keys[], |
| bool can_send_function_keys, |
| bool has_numeric_keypad, |
| bool has_scrnlock_key) |
| { |
| struct acpi_dp *dp_array; |
| enum ps2_action_key key; |
| uint32_t keymap; |
| unsigned int i, total = 0; |
| |
| dp_array = acpi_dp_new_table("linux,keymap"); |
| if (!dp_array) { |
| printk(BIOS_ERR, "PS2K: couldn't write linux,keymap\n"); |
| return; |
| } |
| |
| /* Write out keymap for top row action keys */ |
| for (i = 0; i < num_top_row_keys; i++) { |
| key = action_keys[i]; |
| if (!key || key >= ARRAY_SIZE(action_keymaps)) { |
| printk(BIOS_ERR, |
| "PS2K: invalid top-action-key-%u: %u\n", i, key); |
| continue; |
| } |
| keymap = action_keymaps[key]; |
| acpi_dp_add_integer(dp_array, NULL, keymap); |
| total++; |
| } |
| |
| /* Write out keymap for function keys, if keyboard can send them */ |
| if (can_send_function_keys) { |
| for (i = 0; i < num_top_row_keys; i++) { |
| keymap = function_keymaps[i]; |
| acpi_dp_add_integer(dp_array, NULL, keymap); |
| } |
| |
| total += num_top_row_keys; |
| } |
| |
| /* Write out keymap for numeric keypad, if the keyboard has it */ |
| if (has_numeric_keypad) { |
| for (i = 0; i < ARRAY_SIZE(numeric_keypad_keymaps); i++) { |
| keymap = numeric_keypad_keymaps[i]; |
| acpi_dp_add_integer(dp_array, NULL, keymap); |
| } |
| |
| total += ARRAY_SIZE(numeric_keypad_keymaps); |
| } |
| |
| /* Provide keymap for screenlock only if it is present */ |
| if (has_scrnlock_key) { |
| acpi_dp_add_integer(dp_array, NULL, KEYMAP(0x5d, KEY_SLEEP)); |
| total++; |
| } |
| |
| /* Write out keymap for rest of keys */ |
| for (i = 0; i < ARRAY_SIZE(rest_of_keymaps); i++) { |
| keymap = rest_of_keymaps[i]; |
| acpi_dp_add_integer(dp_array, NULL, keymap); |
| } |
| |
| total += ARRAY_SIZE(rest_of_keymaps); |
| printk(BIOS_INFO, "PS2K: Passing %u keymaps to kernel\n", total); |
| |
| acpi_dp_add_array(dp, dp_array); |
| } |
| |
| void acpigen_ps2_keyboard_dsd(const char *scope, uint8_t num_top_row_keys, |
| enum ps2_action_key action_keys[], |
| bool can_send_function_keys, |
| bool has_numeric_keypad, |
| bool has_scrnlock_key) |
| { |
| struct acpi_dp *dsd; |
| |
| if (!scope || |
| num_top_row_keys < PS2_MIN_TOP_ROW_KEYS || |
| num_top_row_keys > PS2_MAX_TOP_ROW_KEYS) { |
| printk(BIOS_ERR, "PS2K: %s: invalid args\n", __func__); |
| return; |
| } |
| |
| dsd = acpi_dp_new_table("_DSD"); |
| if (!dsd) { |
| printk(BIOS_ERR, "PS2K: couldn't write _DSD\n"); |
| return; |
| } |
| |
| acpigen_write_scope(scope); |
| ssdt_generate_physmap(dsd, num_top_row_keys, action_keys); |
| ssdt_generate_keymap(dsd, num_top_row_keys, action_keys, |
| can_send_function_keys, has_numeric_keypad, |
| has_scrnlock_key); |
| acpi_dp_write(dsd); |
| acpigen_pop_len(); /* Scope */ |
| } |