89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
/* Copyright 2013 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.
|
|
*
|
|
* Raw keyboard I/O layer for MEC1322
|
|
*/
|
|
|
|
#include "gpio.h"
|
|
#include "keyboard_config.h"
|
|
#include "keyboard_raw.h"
|
|
#include "keyboard_scan.h"
|
|
#include "registers.h"
|
|
#include "task.h"
|
|
#include "util.h"
|
|
|
|
void keyboard_raw_init(void)
|
|
{
|
|
keyboard_raw_enable_interrupt(0);
|
|
gpio_config_module(MODULE_KEYBOARD_SCAN, 1);
|
|
|
|
/* Enable keyboard scan interrupt */
|
|
MEC1322_INT_ENABLE(17) |= BIT(21);
|
|
MEC1322_INT_BLK_EN |= BIT(17);
|
|
MEC1322_KS_KSI_INT_EN = 0xff;
|
|
}
|
|
|
|
void keyboard_raw_task_start(void)
|
|
{
|
|
task_enable_irq(MEC1322_IRQ_KSC_INT);
|
|
}
|
|
|
|
test_mockable void keyboard_raw_drive_column(int out)
|
|
{
|
|
if (out == KEYBOARD_COLUMN_ALL) {
|
|
MEC1322_KS_KSO_SEL = BIT(5); /* KSEN=0, KSALL=1 */
|
|
#ifdef CONFIG_KEYBOARD_COL2_INVERTED
|
|
gpio_set_level(GPIO_KBD_KSO2, 1);
|
|
#endif
|
|
} else if (out == KEYBOARD_COLUMN_NONE) {
|
|
MEC1322_KS_KSO_SEL = BIT(6); /* KSEN=1 */
|
|
#ifdef CONFIG_KEYBOARD_COL2_INVERTED
|
|
gpio_set_level(GPIO_KBD_KSO2, 0);
|
|
#endif
|
|
} else {
|
|
#ifdef CONFIG_KEYBOARD_COL2_INVERTED
|
|
if (out == 2) {
|
|
MEC1322_KS_KSO_SEL = BIT(6); /* KSEN=1 */
|
|
gpio_set_level(GPIO_KBD_KSO2, 1);
|
|
} else {
|
|
MEC1322_KS_KSO_SEL = out + CONFIG_KEYBOARD_KSO_BASE;
|
|
gpio_set_level(GPIO_KBD_KSO2, 0);
|
|
}
|
|
#else
|
|
MEC1322_KS_KSO_SEL = out + CONFIG_KEYBOARD_KSO_BASE;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
test_mockable int keyboard_raw_read_rows(void)
|
|
{
|
|
/* Invert it so 0=not pressed, 1=pressed */
|
|
return (MEC1322_KS_KSI_INPUT & 0xff) ^ 0xff;
|
|
}
|
|
|
|
void keyboard_raw_enable_interrupt(int enable)
|
|
{
|
|
if (enable) {
|
|
task_clear_pending_irq(MEC1322_IRQ_KSC_INT);
|
|
task_enable_irq(MEC1322_IRQ_KSC_INT);
|
|
} else {
|
|
task_disable_irq(MEC1322_IRQ_KSC_INT);
|
|
}
|
|
}
|
|
|
|
void keyboard_raw_interrupt(void)
|
|
{
|
|
/* Clear interrupt status bits */
|
|
MEC1322_KS_KSI_STATUS = 0xff;
|
|
|
|
/* Wake keyboard scan task to handle interrupt */
|
|
task_wake(TASK_ID_KEYSCAN);
|
|
}
|
|
DECLARE_IRQ(MEC1322_IRQ_KSC_INT, keyboard_raw_interrupt, 1);
|
|
|
|
int keyboard_raw_is_input_low(int port, int id)
|
|
{
|
|
return (MEC1322_GPIO_CTL(port, id) & BIT(24)) == 0;
|
|
}
|