diff options
Diffstat (limited to 'chip/npcx/keyboard_raw.c')
| -rw-r--r-- | chip/npcx/keyboard_raw.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/chip/npcx/keyboard_raw.c b/chip/npcx/keyboard_raw.c deleted file mode 100644 index e6b8cad7bd..0000000000 --- a/chip/npcx/keyboard_raw.c +++ /dev/null @@ -1,169 +0,0 @@ -/* Copyright 2014 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -/* Functions needed by keyboard scanner module for Chrome EC */ - -#include "common.h" -#include "keyboard_raw.h" -#include "keyboard_scan.h" -#include "clock.h" -#include "gpio.h" -#include "registers.h" -#include "task.h" - -/** - * Initialize the raw keyboard interface. - */ -void keyboard_raw_init(void) -{ - /* Enable clock for KBS peripheral */ - clock_enable_peripheral(CGC_OFFSET_KBS, CGC_KBS_MASK, - CGC_MODE_RUN | CGC_MODE_SLEEP); - - /* Ensure top-level interrupt is disabled */ - keyboard_raw_enable_interrupt(0); - - /* - * Select quasi-bidirectional buffers for KSO pins. It reduces the - * low-to-high transition time. This feature only supports in npcx7. - */ -#ifdef CONFIG_KEYBOARD_KSO_HIGH_DRIVE - SET_FIELD(NPCX_KBSCTL, NPCX_KBHDRV_FIELD, 0x01); -#endif - - /* pull-up KBSIN 0-7 internally */ - NPCX_KBSINPU = 0xFF; - - /* Disable automatic scan mode */ - CLEAR_BIT(NPCX_KBSCTL, NPCX_KBSMODE); - - /* Disable automatic interrupt enable */ - CLEAR_BIT(NPCX_KBSCTL, NPCX_KBSIEN); - - /* Disable increment enable */ - CLEAR_BIT(NPCX_KBSCTL, NPCX_KBSINC); - - /* Set KBSOUT to zero to detect key-press */ - NPCX_KBSOUT0 = 0x00; - NPCX_KBSOUT1 = 0x00; - - gpio_config_module(MODULE_KEYBOARD_SCAN, 1); - - /* - * Enable interrupts for the inputs. The top-level interrupt is still - * masked off, so this won't trigger interrupts yet. - */ - - /* Clear pending input sources used by scanner */ - NPCX_WKPCL(MIWU_TABLE_WKKEY, MIWU_GROUP_WKKEY) = 0xFF; - - /* Enable Wake-up Button */ - NPCX_WKEN(MIWU_TABLE_WKKEY, MIWU_GROUP_WKKEY) = 0xFF; - - /* Select high to low transition (falling edge) */ - NPCX_WKEDG(MIWU_TABLE_WKKEY, MIWU_GROUP_WKKEY) = 0xFF; - - /* Enable interrupt of WK KBS */ - keyboard_raw_enable_interrupt(1); -} - -/** - * Finish initialization after task scheduling has started. - */ -void keyboard_raw_task_start(void) -{ - /* Enable MIWU to trigger KBS interrupt */ - task_enable_irq(NPCX_IRQ_KSI_WKINTC_1); -} - -/** - * Drive the specified column low. - */ -test_mockable void keyboard_raw_drive_column(int col) -{ - /* - * Nuvoton Keyboard Scan IP supports 18x8 Matrix - * It also support automatic scan functionality - */ - uint32_t mask, col_out; - - /* Add support for CONFIG_KEYBOARD_KSO_BASE shifting */ - col_out = col + CONFIG_KEYBOARD_KSO_BASE; - - /* Drive all lines to high */ - if (col == KEYBOARD_COLUMN_NONE) { - mask = ~0; -#if defined(CONFIG_KEYBOARD_CUSTOMIZATION) - board_keyboard_drive_col(col); -#elif defined(CONFIG_KEYBOARD_COL2_INVERTED) - gpio_set_level(GPIO_KBD_KSO2, 0); -#endif - } - /* Set KBSOUT to zero to detect key-press */ - else if (col == KEYBOARD_COLUMN_ALL) { - mask = ~(BIT(keyboard_cols) - 1); -#if defined(CONFIG_KEYBOARD_CUSTOMIZATION) - board_keyboard_drive_col(col); -#elif defined(CONFIG_KEYBOARD_COL2_INVERTED) - gpio_set_level(GPIO_KBD_KSO2, 1); -#endif - } - /* Drive one line for detection */ - else { -#if defined(CONFIG_KEYBOARD_CUSTOMIZATION) - board_keyboard_drive_col(col); -#elif defined(CONFIG_KEYBOARD_COL2_INVERTED) - if (col == 2) - gpio_set_level(GPIO_KBD_KSO2, 1); - else - gpio_set_level(GPIO_KBD_KSO2, 0); -#endif - mask = ~BIT(col_out); - } - - /* Set KBSOUT */ - NPCX_KBSOUT0 = (mask & 0xFFFF); - NPCX_KBSOUT1 = ((mask >> 16) & 0x03); -} - -/** - * Read raw row state. - * Bits are 1 if signal is present, 0 if not present. - */ -test_mockable int keyboard_raw_read_rows(void) -{ - /* Bits are active-low, so invert returned levels */ - return (~NPCX_KBSIN) & KB_ROW_MASK; -} - -/** - * Enable or disable keyboard interrupts. - */ -void keyboard_raw_enable_interrupt(int enable) -{ - if (enable) - task_enable_irq(NPCX_IRQ_KSI_WKINTC_1); - else - task_disable_irq(NPCX_IRQ_KSI_WKINTC_1); -} - -/* - * Interrupt handler for the entire GPIO bank of keyboard rows. - */ -void keyboard_raw_interrupt(void) -{ - /* Clear pending input sources used by scanner */ - NPCX_WKPCL(MIWU_TABLE_WKKEY, MIWU_GROUP_WKKEY) = 0xFF; - - /* Wake the scan task */ - task_wake(TASK_ID_KEYSCAN); -} -DECLARE_IRQ(NPCX_IRQ_KSI_WKINTC_1, keyboard_raw_interrupt, 5); - -int keyboard_raw_is_input_low(int port, int id) -{ - return (NPCX_PDIN(port) & BIT(id)) == 0; -} - |