diff options
Diffstat (limited to 'zephyr/drivers/cros_kb_raw/cros_kb_raw_ite.c')
| -rw-r--r-- | zephyr/drivers/cros_kb_raw/cros_kb_raw_ite.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/zephyr/drivers/cros_kb_raw/cros_kb_raw_ite.c b/zephyr/drivers/cros_kb_raw/cros_kb_raw_ite.c deleted file mode 100644 index 85b2a1a8ee..0000000000 --- a/zephyr/drivers/cros_kb_raw/cros_kb_raw_ite.c +++ /dev/null @@ -1,187 +0,0 @@ -/* Copyright 2021 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. - */ - -#define DT_DRV_COMPAT ite_it8xxx2_cros_kb_raw - -#include <assert.h> -#include <drivers/cros_kb_raw.h> -#include <drivers/clock_control.h> -#include <drivers/gpio.h> -#include <kernel.h> -#include <soc.h> -#include <soc/ite_it8xxx2/reg_def_cros.h> - -#include "ec_tasks.h" -#include "keyboard_raw.h" -#include "task.h" - -#include <logging/log.h> -LOG_MODULE_REGISTER(cros_kb_raw, LOG_LEVEL_ERR); - -#define KSOH_PIN_MASK (((1 << (KEYBOARD_COLS_MAX - 8)) - 1) & 0xff) - -/* Device config */ -struct cros_kb_raw_ite_config { - /* keyboard scan controller base address */ - uintptr_t base; - /* Keyboard scan input (KSI) wake-up irq */ - int irq; -}; - -/* Driver convenience defines */ -#define DRV_CONFIG(dev) ((const struct cros_kb_raw_ite_config *)(dev)->config) -#define HAL_INSTANCE(dev) (struct kbs_reg *)(DRV_CONFIG(dev)->base) - -static int kb_raw_ite_init(const struct device *dev) -{ - ARG_UNUSED(dev); - - /* Clock default is on */ - return 0; -} - -/* Cros ec keyboard raw api functions */ -static int cros_kb_raw_ite_enable_interrupt(const struct device *dev, - int enable) -{ - const struct cros_kb_raw_ite_config *const config = DRV_CONFIG(dev); - - if (enable) { - ECREG(IT8XXX2_WUC_WUESR3) = 0xFF; - ite_intc_isr_clear(config->irq); - irq_enable(config->irq); - } else { - irq_disable(config->irq); - } - - return 0; -} - -static int cros_kb_raw_ite_read_row(const struct device *dev) -{ - struct kbs_reg *const inst = HAL_INSTANCE(dev); - - /* Bits are active-low, so invert returned levels */ - return ((inst->KBS_KSI) ^ 0xff); -} - -static int cros_kb_raw_ite_drive_column(const struct device *dev, int col) -{ - int mask; - unsigned int key; - struct kbs_reg *const inst = HAL_INSTANCE(dev); - - /* Tri-state all outputs */ - if (col == KEYBOARD_COLUMN_NONE) - mask = 0xffff; - /* Assert all outputs */ - else if (col == KEYBOARD_COLUMN_ALL) - mask = 0; - /* Assert a single output */ - else - mask = 0xffff ^ BIT(col); -#ifdef CONFIG_PLATFORM_EC_KEYBOARD_COL2_INVERTED - /* KSO[2] is inverted. */ - mask ^= BIT(2); -#endif - inst->KBS_KSOL = mask & 0xff; - /* critical section with interrupts off */ - key = irq_lock(); - /* - * Because IT8XXX2_KBS_KSOH1 register is shared by keyboard scan - * out and GPIO output mode, so we don't drive all KSOH pins - * here (this depends on how many keyboard matrix output pin - * we are using). - */ - inst->KBS_KSOH1 = ((inst->KBS_KSOH1) & ~KSOH_PIN_MASK) | - ((mask >> 8) & KSOH_PIN_MASK); - /* restore interrupts */ - irq_unlock(key); - - return 0; -} - -static void cros_kb_raw_ite_ksi_isr(const struct device *dev) -{ - ARG_UNUSED(dev); - - /* - * We clear IT8XXX2_IRQ_WKINTC irq status in - * ite_intc_irq_handler(), after interrupt was fired. - */ - /* W/C wakeup interrupt status for KSI[0-7] */ - ECREG(IT8XXX2_WUC_WUESR3) = 0xFF; - - /* Wake-up keyboard scan task */ - task_wake(TASK_ID_KEYSCAN); -} - -static int cros_kb_raw_ite_init(const struct device *dev) -{ - unsigned int key; - const struct cros_kb_raw_ite_config *const config = DRV_CONFIG(dev); - struct kbs_reg *const inst = HAL_INSTANCE(dev); - - /* Ensure top-level interrupt is disabled */ - cros_kb_raw_ite_enable_interrupt(dev, 0); - - /* - * bit2, Setting 1 enables the internal pull-up of the KSO[15:0] pins. - * To pull up KSO[17:16], set the GPCR registers of their - * corresponding GPIO ports. - * bit0, Setting 1 enables the open-drain mode of the KSO[17:0] pins. - */ - inst->KBS_KSOCTRL = (IT8XXX2_KBS_KSOPU | IT8XXX2_KBS_KSOOD); - /* bit2, 1 enables the internal pull-up of the KSI[7:0] pins. */ - inst->KBS_KSICTRL = IT8XXX2_KBS_KSIPU; -#ifdef CONFIG_PLATFORM_EC_KEYBOARD_COL2_INVERTED - /* KSO[2] output high, others output low. */ - inst->KBS_KSOL = BIT(2); - /* Enable KSO2's push-pull */ - inst->KBS_KSOLGCTRL |= IT8XXX2_KBS_KSO2GCTRL; - inst->KBS_KSOLGOEN |= IT8XXX2_KBS_KSO2GOEN; -#else - /* KSO[7:0] pins output low. */ - inst->KBS_KSOL = 0x00; -#endif - /* critical section with interrupts off */ - key = irq_lock(); - /* - * KSO[COLS_MAX:8] pins low. - * NOTE: KSO[15:8] pins can part be enabled for keyboard function and - * rest be configured as GPIO output mode. In this case that we - * disable the ISR in critical section to avoid race condition. - */ - inst->KBS_KSOH1 &= ~KSOH_PIN_MASK; - /* restore interrupts */ - irq_unlock(key); - /* Select falling-edge triggered of wakeup interrupt for KSI[0-7] */ - ECREG(IT8XXX2_WUC_WUEMR3) = 0xFF; - /* W/C wakeup interrupt status for KSI[0-7] */ - ECREG(IT8XXX2_WUC_WUESR3) = 0xFF; - ite_intc_isr_clear(config->irq); - /* Enable wakeup interrupt for KSI[0-7] */ - ECREG(IT8XXX2_WUC_WUENR3) = 0xFF; - - IRQ_CONNECT(DT_INST_IRQN(0), 0, cros_kb_raw_ite_ksi_isr, NULL, 0); - - return 0; -} - -static const struct cros_kb_raw_driver_api cros_kb_raw_ite_driver_api = { - .init = cros_kb_raw_ite_init, - .drive_colum = cros_kb_raw_ite_drive_column, - .read_rows = cros_kb_raw_ite_read_row, - .enable_interrupt = cros_kb_raw_ite_enable_interrupt, -}; - -static const struct cros_kb_raw_ite_config cros_kb_raw_cfg = { - .base = DT_INST_REG_ADDR(0), - .irq = DT_INST_IRQN(0), -}; - -DEVICE_DT_INST_DEFINE(0, kb_raw_ite_init, NULL, NULL, &cros_kb_raw_cfg, - PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT, - &cros_kb_raw_ite_driver_api); |