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/* Copyright (c) 2019-2025 Allwinner Technology Co., Ltd. ALL rights reserved.
* Allwinner is a trademark of Allwinner Technology Co.,Ltd., registered in
* the the People's Republic of China and other countries.
* All Allwinner Technology Co.,Ltd. trademarks are used with permission.
* DISCLAIMER
* THIRD PARTY LICENCES MAY BE REQUIRED TO IMPLEMENT THE SOLUTION/PRODUCT.
* IF YOU NEED TO INTEGRATE THIRD PARTY¡¯S TECHNOLOGY (SONY, DTS, DOLBY, AVS OR MPEGLA, ETC.)
* IN ALLWINNERS¡¯SDK OR PRODUCTS, YOU SHALL BE SOLELY RESPONSIBLE TO OBTAIN
* ALL APPROPRIATELY REQUIRED THIRD PARTY LICENCES.
* ALLWINNER SHALL HAVE NO WARRANTY, INDEMNITY OR OTHER OBLIGATIONS WITH RESPECT TO MATTERS
* COVERED UNDER ANY REQUIRED THIRD PARTY LICENSE.
* YOU ARE SOLELY RESPONSIBLE FOR YOUR USAGE OF THIRD PARTY¡¯S TECHNOLOGY.
* THIS SOFTWARE IS PROVIDED BY ALLWINNER"AS IS" AND TO THE MAXIMUM EXTENT
* PERMITTED BY LAW, ALLWINNER EXPRESSLY DISCLAIMS ALL WARRANTIES OF ANY KIND,
* WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING WITHOUT LIMITATION REGARDING
* THE TITLE, NON-INFRINGEMENT, ACCURACY, CONDITION, COMPLETENESS, PERFORMANCE
* OR MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
* IN NO EVENT SHALL ALLWINNER 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 <sunxi_hal_lradc.h>
lradc_func_data lradc_priv;
static uint32_t base_addr = LRADC_BASE;
static uint32_t ctrl_para = FIRST_CONCERT_DLY | ADC_CHAN_SELECT | KEY_MODE_SELECT
| LRADC_HOLD_EN & LEVELB_VOL & LRADC_SAMPLE_2KHZ | LRADC_EN;
static uint32_t irq_para = LRADC_ADC0_UP_EN | LRADC_ADC0_DOWN_EN | LRADC_ADC0_DATA_EN;
static void lradc_ctrl_set(void)
{
uint32_t reg_val = 0;
reg_val = hal_readl(base_addr + LRADC_CTRL_REG);
reg_val |= ctrl_para;
hal_writel(reg_val, base_addr + LRADC_CTRL_REG);
}
static void lradc_ctrl_reset(void)
{
uint32_t reg_val = 0;
reg_val = hal_readl(base_addr + LRADC_CTRL_REG);
reg_val &= ~ctrl_para;
hal_writel(reg_val, base_addr + LRADC_CTRL_REG);
}
static void lradc_irq_set(void)
{
uint32_t reg_val = 0;
reg_val = hal_readl(base_addr + LRADC_INTC_REG);
reg_val |= irq_para;
hal_writel(reg_val, base_addr + LRADC_INTC_REG);
}
static void lradc_irq_reset(void)
{
uint32_t reg_val = 0;
reg_val = hal_readl(base_addr + LRADC_INTC_REG);
reg_val &= ~irq_para;
hal_writel(reg_val, base_addr + LRADC_INTC_REG);
}
static void lradc_register_callback(lradc_callback_t user_callback)
{
lradc_priv.func = user_callback;
}
static irqreturn_t lradc_irq_handler(int dummy, void *priv_data)
{
lradc_func_data *lradc_priv = priv_data;
lradc_callback_t callback = lradc_priv->func;
void *arg = lradc_priv->arg;
uint32_t irq_status = hal_readl(base_addr + LRADC_INTS_REG);
uint32_t reg_val = hal_readl(base_addr + LRADC_DATA0_REG);
if (NULL != callback)
callback(irq_status, reg_val);
hal_writel(reg_val, base_addr + LRADC_INTS_REG);
return 0;
}
static int32_t lradc_init_irq(void)
{
uint32_t irqn = SUNXI_IRQ_LRADC;
if (request_irq(irqn, lradc_irq_handler, 0, "lradc", &lradc_priv) < 0) {
return -1;
}
enable_irq(irqn);
return 0;
}
hal_lradc_status_t hal_lradc_init(void)
{
//sunxi_clk_init();
lradc_ctrl_set();
lradc_irq_set();
lradc_init_irq();
return HAL_ADC_STATUS_OK;
}
hal_lradc_status_t hal_lradc_deinit(void)
{
lradc_irq_reset();
lradc_ctrl_reset();
return HAL_ADC_STATUS_OK;
}
hal_lradc_status_t hal_lradc_register_callback(lradc_callback_t callback)
{
lradc_register_callback(callback);
return HAL_ADC_STATUS_OK;
}
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