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https://github.com/Telecominfraproject/OpenCellular.git
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755a767c2b
The reboot_ec command could warm boot the EC while the host is still running. However, this resets the internal state so that the keyboard module is disabled on the EC side. Check the reset cause during the keyboard init code. If it is wrm boot, enable the keyboard (assume the host is on). BUG=chrome-os-partner:9102 TEST=on link 1.0 % ectool version Firmware copy: RO % ectool reboot_ec RO the keyboard keeps working. Change-Id: I0009c561e2cd88789e50f9129b494538e50ee00e
105 lines
3.1 KiB
C
105 lines
3.1 KiB
C
/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* The functions implemented by keyboard component of EC core.
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*/
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#ifndef __INCLUDE_KEYBOARD_H
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#define __INCLUDE_KEYBOARD_H
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#include "common.h"
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/***************************************************************************/
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/* Functions exported by common/keyboard.c.
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*/
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#define MAX_SCAN_CODE_LEN 4
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enum scancode_set_list {
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SCANCODE_GET_SET = 0,
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SCANCODE_SET_1,
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SCANCODE_SET_2,
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SCANCODE_SET_3,
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SCANCODE_MAX = SCANCODE_SET_3,
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};
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/* The initialize code of keyboard lib. Called by core main. */
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int keyboard_init(void);
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/* Called by keyboard scan code once any key state change (after de-bounce),
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*
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* This function will look up matrix table and convert scancode host.
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*/
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void keyboard_state_changed(int row, int col, int is_pressed);
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/* Handle the port 0x60 writes from host.
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*
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* This functions returns the number of bytes stored in *output buffer.
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*/
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int handle_keyboard_data(uint8_t data, uint8_t *output);
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/* Handle the port 0x64 writes from host.
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*
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* This functions returns the number of bytes stored in *output buffer.
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* BUT theose bytes will appear at port 0x60.
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*/
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int handle_keyboard_command(uint8_t command, uint8_t *output);
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/* Send make/break code of power button to host.
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*/
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void keyboard_set_power_button(int pressed);
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/* Register the board-specific keyboard matrix translation function.
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* The callback function accepts col/row and returns the scan code.
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*
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* Note that *scan_code must be at least 4 bytes long to store maximum
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* possible sequence.
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*/
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typedef enum ec_error_list (*keyboard_matrix_callback)(
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int8_t row, int8_t col, int8_t pressed,
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enum scancode_set_list code_set, uint8_t *scan_code, int32_t* len);
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enum ec_error_list keyboard_matrix_register_callback(
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int8_t row_num, int8_t col_num,
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keyboard_matrix_callback callback);
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/***************************************************************************/
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/* Below is the interface with the underlying chip-dependent code.
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*/
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#define MAX_KEYBOARD_MATRIX_ROWS 8
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#define MAX_KEYBOARD_MATRIX_COLS 16
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typedef void (*keyboard_callback)(int row, int col, int is_pressed);
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/* Registers a callback function to underlayer EC lib. So that any key state
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* change would notify the upper EC main code.
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*
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* Note that passing NULL removes any previously registered callback.
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*/
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enum ec_error_list keyboard_register_callback(keyboard_callback cb);
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/* Asks the underlayer EC lib what keys are pressed right now.
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*
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* Sets bit_array to a debounced array of which keys are currently pressed,
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* where a 1-bit means the key is pressed. For example, if only row=2 col=3
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* is pressed, it would set bit_array to {0, 0, 0x08, 0, ...}
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*
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* bit_array must be at least MAX_KEYBOARD_MATRIX_COLS bytes long.
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*/
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enum ec_error_list keyboard_get_state(uint8_t *bit_array);
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/* Return true if the TOH is still set */
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extern int keyboard_has_char(void);
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extern void keyboard_put_char(uint8_t chr, int send_irq);
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#endif /* __INCLUDE_KEYBOARD_H */
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