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/**
******************************************************************************
* @file bflb_kys.c
* @version V1.0
* @date 2022-11-17
* @brief This file is the low hardware abstraction layer file
******************************************************************************
* @attention
*
* <h2><center>© COPYRIGHT(c) 2022 Bouffalo Lab</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of Bouffalo Lab nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
#include "bflb_core.h"
#include "bflb_kys.h"
#include "bflb_clock.h"
#include "bflb_l1c.h"
#include "hardware/kys_reg.h"
/**
* @brief keyscan init
*
* @param dev
* @param config
*/
void bflb_kys_init(struct bflb_device_s *dev, const struct bflb_kys_config_s *config)
{
uint32_t reg_base;
uint32_t reg_val;
reg_base = dev->reg_base;
/* disable kys */
reg_val = getreg32(reg_base + KYS_KS_CTRL_OFFSET);
reg_val &= ~(KYS_KS_EN_MASK);
putreg32(reg_val, reg_base + KYS_KS_CTRL_OFFSET);
/* mask all interrupt before init */
reg_val = getreg32(reg_base + KYS_KS_INT_EN_OFFSET);
#if defined(BL702)
reg_val &= ~(KYS_KS_INT_EN_MASK);
#else
reg_val &= ~(KYS_KS_DONE_INT_EN_MASK |
KYS_KEYFIFO_FULL_INT_EN_MASK |
KYS_KEYFIFO_HALF_INT_EN_MASK |
KYS_KEYFIFO_QUARTER_INT_EN_MASK |
KYS_KEYFIFO_NONEMPTY_INT_EN_MASK |
KYS_GHOST_INT_EN_MASK);
#endif
/* kys init */
reg_val = getreg32(reg_base + KYS_KS_CTRL_OFFSET);
reg_val &= ~(KYS_COL_NUM_MASK |
KYS_ROW_NUM_MASK |
#if defined(BL702L)
KYS_FIFO_MODE_MASK |
#endif
KYS_RC_EXT_MASK |
KYS_GHOST_EN_MASK |
KYS_DEG_EN_MASK |
KYS_DEG_CNT_MASK);
reg_val |= ((config->col - 1) << KYS_COL_NUM_SHIFT);
reg_val |= ((config->row - 1) << KYS_ROW_NUM_SHIFT);
reg_val |= ((config->idle_duration) << KYS_RC_EXT_SHIFT);
reg_val |= (config->ghost_en << KYS_GHOST_EN_SHIFT);
reg_val |= (config->deglitch_en << KYS_DEG_EN_SHIFT);
reg_val |= (config->deglitch_cnt << KYS_DEG_CNT_SHIFT);
#if defined(BL702L)
reg_val |= (0x1 << KYS_FIFO_MODE_SHIFT);
#endif
putreg32(reg_val, reg_base + KYS_KS_CTRL_OFFSET);
}
/**
* @brief keyscan enable
*
*/
void bflb_kys_enable(struct bflb_device_s *dev)
{
uint32_t reg_base;
uint32_t reg_val;
reg_base = dev->reg_base;
reg_val = getreg32(reg_base + KYS_KS_CTRL_OFFSET);
reg_val |= (0x1 << KYS_KS_EN_SHIFT);
putreg32(reg_val, reg_base + KYS_KS_CTRL_OFFSET);
}
/**
* @brief keyscan disable
*
*/
void bflb_kys_disable(struct bflb_device_s *dev)
{
uint32_t reg_base;
uint32_t reg_val;
reg_base = dev->reg_base;
reg_val = getreg32(reg_base + KYS_KS_CTRL_OFFSET);
reg_val &= ~(KYS_KS_EN_MASK);
putreg32(reg_val, reg_base + KYS_KS_CTRL_OFFSET);
}
/**
* @brief keyscan interrupt enable
*
* @param dev
* @param flag interrupt flag @KEYSCAN_INT_EN define
* @param enable enable or disable interrupt
*/
void bflb_kys_int_enable(struct bflb_device_s *dev, uint32_t flag, bool enable)
{
uint32_t reg_base;
uint32_t reg_val_en;
reg_base = dev->reg_base;
reg_val_en = getreg32(reg_base + KYS_KS_INT_EN_OFFSET);
if (enable) {
reg_val_en |= (flag);
} else {
reg_val_en &= ~(flag);
}
putreg32(reg_val_en, reg_base + KYS_KS_INT_EN_OFFSET);
}
/**
* @brief keyscan interrupt clear flag
*
* @param dev
* @param flag
*/
void bflb_kys_int_clear(struct bflb_device_s *dev, uint32_t flag)
{
putreg32(flag, dev->reg_base + KYS_KEYCODE_CLR_OFFSET);
}
/**
* @brief keyscan get interrupt status
*
* @param dev
* @return uint32_t
*/
uint32_t bflb_kys_get_int_status(struct bflb_device_s *dev)
{
uint32_t reg_base;
uint32_t reg_sts_val, reg_mask_val;
reg_base = dev->reg_base;
reg_sts_val = getreg32(reg_base + KYS_KS_INT_STS_OFFSET);
reg_mask_val = getreg32(reg_base + KYS_KS_INT_EN_OFFSET);
return (reg_sts_val & (reg_mask_val));
}
#if defined(BL702L)
/**
* @brief get keyscan keycode index in fifo
*
* @param dev
* @param fifo_head
* @param fifo_tail
* @param fifo_valid_cnt
*
*/
void bflb_kys_get_fifo_info(struct bflb_device_s *dev, uint8_t *fifo_head, uint8_t *fifo_tail, uint8_t *fifo_valid_cnt)
{
uint32_t reg_base;
uint32_t reg_val;
reg_base = dev->reg_base;
reg_val = getreg32(reg_base + KYS_KEYFIFO_IDX_OFFSET);
*fifo_head = (uint8_t)(reg_val & 0x7);
*fifo_tail = (uint8_t)((reg_val & 0x700) >> 8);
*fifo_valid_cnt = (uint8_t)((reg_val & 0xf0000) >> 16);
}
#endif
/**
* @brief get keyscan keycode value
*
* @param dev
* @param index
* @return uint8_t
*/
uint8_t bflb_kys_read_keyvalue(struct bflb_device_s *dev, uint8_t index)
{
#if defined(BL702L)
return (uint8_t)(getreg32(dev->reg_base + KYS_KEYFIFO_VALUE_OFFSET) & 0xff);
#endif
#if defined(BL702)
return (uint8_t)((getreg32(dev->reg_base + KYS_KEYFIFO_VALUE_OFFSET) >> (index * 8)) & 0xff);
#endif
}
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