blsp.c

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/* SPDX-License-Identifier: BSD-3-Clause */
 
#include <gpio.h>
#include <soc/gpio.h>
#include <soc/blsp.h>
#include <soc/qup.h>
 
#define IPQ40XX_I2C0_PINGROUP_1         1
#define IPQ40XX_I2C0_PINGROUP_2         (!IPQ40XX_I2C0_PINGROUP_1)
#define IPQ40XX_I2C1_PINGROUP_1         1
 
#if IPQ40XX_I2C0_PINGROUP_1
 
#define SCL_GPIO                20
#define SDA_GPIO                21
#define GPIO_FUNC_SCL           0x1
#define GPIO_FUNC_SDA           0x1
 
#elif IPQ40XX_I2C0_PINGROUP_2
 
#define SCL_GPIO                58
#define SDA_GPIO                59
#define GPIO_FUNC_SCL           0x3
#define GPIO_FUNC_SDA           0x2
 
#else
 
#warning "TPM: I2C pingroup not specified"
 
#endif
 
#if IPQ40XX_I2C1_PINGROUP_1
 
#define SCL_GPIO_I2C1                34
#define SDA_GPIO_I2C1                35
#define GPIO_I2C1_FUNC_SCL           0x1
#define GPIO_I2C1_FUNC_SDA           0x1
 
#endif
 
int blsp_i2c_init_board(blsp_qup_id_t id)
{
        switch (id) {
        case BLSP_QUP_ID_0:
        case BLSP_QUP_ID_1:
        case BLSP_QUP_ID_2:
        case BLSP_QUP_ID_3:
#if defined(IPQ40XX_I2C0_PINGROUP_1) || defined(IPQ40XX_I2C0_PINGROUP_2)
                gpio_tlmm_config_set(SDA_GPIO, GPIO_FUNC_SDA,
                                     GPIO_NO_PULL, GPIO_2MA, 1);
                gpio_tlmm_config_set(SCL_GPIO, GPIO_FUNC_SCL,
                                     GPIO_NO_PULL, GPIO_2MA, 1);
#endif /* Pin Group 1 or 2 */
 
#if defined(IPQ40XX_I2C1_PINGROUP_1)
                gpio_tlmm_config_set(SDA_GPIO_I2C1, GPIO_I2C1_FUNC_SDA,
                                     GPIO_NO_PULL, GPIO_2MA, 1);
                gpio_tlmm_config_set(SCL_GPIO_I2C1, GPIO_I2C1_FUNC_SCL,
                                     GPIO_NO_PULL, GPIO_2MA, 1);
#endif
                break;
        default:
                return 1;
        }
 
        return 0;
}