/**
* SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "esp_rom_sys.h"
#include "esp_attr.h"
#include "soc/i2c_ana_mst_reg.h"
#include "modem/modem_lpcon_reg.h"
/**
* BB - 0x67 - BIT0
* TXRF - 0x6B - BIT1
* SDM - 0x63 - BIT2
* PLL - 0x62 - BIT3
* BIAS - 0x6A - BIT4
* BBPLL - 0x66 - BIT5
* ULP - 0x61 - BIT6
* SAR - 0x69 - BIT7
* PMU - 0x6d - BIT8
*/
#define REGI2C_BIAS_MST_SEL (BIT(8))
#define REGI2C_BBPLL_MST_SEL (BIT(9))
#define REGI2C_ULP_CAL_MST_SEL (BIT(10))
#define REGI2C_SAR_I2C_MST_SEL (BIT(11))
#define REGI2C_DIG_REG_MST_SEL (BIT(12))
#define REGI2C_BIAS_RD_MASK (~BIT(6) & I2C_MST_ANA_CONF1_M)
#define REGI2C_BBPLL_RD_MASK (~BIT(7) & I2C_MST_ANA_CONF1_M)
#define REGI2C_ULP_CAL_RD_MASK (~BIT(8) & I2C_MST_ANA_CONF1_M)
#define REGI2C_SAR_I2C_RD_MASK (~BIT(9) & I2C_MST_ANA_CONF1_M)
#define REGI2C_DIG_REG_RD_MASK (~BIT(10) & I2C_MST_ANA_CONF1_M)
#define I2C_ANA_MST_I2C_CTRL_REG(n) (I2C_MST_I2C0_CTRL_REG + n*4) // 0: I2C_ANA_MST_I2C0_CTRL_REG; 1: I2C_ANA_MST_I2C1_CTRL_REG
#define REGI2C_RTC_BUSY (BIT(25))
#define REGI2C_RTC_BUSY_M (BIT(25))
#define REGI2C_RTC_BUSY_V 0x1
#define REGI2C_RTC_BUSY_S 25
#define REGI2C_RTC_WR_CNTL (BIT(24))
#define REGI2C_RTC_WR_CNTL_M (BIT(24))
#define REGI2C_RTC_WR_CNTL_V 0x1
#define REGI2C_RTC_WR_CNTL_S 24
#define REGI2C_RTC_DATA 0x000000FF
#define REGI2C_RTC_DATA_M ((I2C_RTC_DATA_V)<<(I2C_RTC_DATA_S))
#define REGI2C_RTC_DATA_V 0xFF
#define REGI2C_RTC_DATA_S 16
#define REGI2C_RTC_ADDR 0x000000FF
#define REGI2C_RTC_ADDR_M ((I2C_RTC_ADDR_V)<<(I2C_RTC_ADDR_S))
#define REGI2C_RTC_ADDR_V 0xFF
#define REGI2C_RTC_ADDR_S 8
#define REGI2C_RTC_SLAVE_ID 0x000000FF
#define REGI2C_RTC_SLAVE_ID_M ((I2C_RTC_SLAVE_ID_V)<<(I2C_RTC_SLAVE_ID_S))
#define REGI2C_RTC_SLAVE_ID_V 0xFF
#define REGI2C_RTC_SLAVE_ID_S 0
/* SLAVE */
#define REGI2C_BBPLL (0x66)
#define REGI2C_BBPLL_HOSTID 0
#define REGI2C_BIAS (0x6a)
#define REGI2C_BIAS_HOSTID 0
#define REGI2C_PMU (0x6d)
#define REGI2C_PMU_HOSTID 0
#define REGI2C_ULP_CAL (0x61)
#define REGI2C_ULP_CAL_HOSTID 0
#define REGI2C_SAR_I2C (0x69)
#define REGI2C_SAR_I2C_HOSTID 0
/* SLAVE END */
uint8_t esp_rom_regi2c_read(uint8_t block, uint8_t host_id, uint8_t reg_add) __attribute__((alias("regi2c_read_impl")));
uint8_t esp_rom_regi2c_read_mask(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb) __attribute__((alias("regi2c_read_mask_impl")));
void esp_rom_regi2c_write(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t data) __attribute__((alias("regi2c_write_impl")));
void esp_rom_regi2c_write_mask(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb, uint8_t data) __attribute__((alias("regi2c_write_mask_impl")));
static IRAM_ATTR uint8_t regi2c_enable_block(uint8_t block)
{
uint32_t i2c_sel = 0;
REG_SET_BIT(MODEM_LPCON_CLK_CONF_REG, MODEM_LPCON_CLK_I2C_MST_EN);
/* Before config I2C register, enable corresponding slave. */
switch (block) {
case REGI2C_BBPLL :
i2c_sel = REG_GET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_BBPLL_MST_SEL);
REG_WRITE(I2C_MST_ANA_CONF1_REG, REGI2C_BBPLL_RD_MASK);
break;
case REGI2C_BIAS :
i2c_sel = REG_GET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_BIAS_MST_SEL);
REG_WRITE(I2C_MST_ANA_CONF1_REG, REGI2C_BIAS_RD_MASK);
break;
case REGI2C_PMU:
i2c_sel = REG_GET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_DIG_REG_MST_SEL);
REG_WRITE(I2C_MST_ANA_CONF1_REG, REGI2C_DIG_REG_RD_MASK);
break;
case REGI2C_ULP_CAL:
i2c_sel = REG_GET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_ULP_CAL_MST_SEL);
REG_WRITE(I2C_MST_ANA_CONF1_REG, REGI2C_ULP_CAL_RD_MASK);
break;
case REGI2C_SAR_I2C:
i2c_sel = REG_GET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_SAR_I2C_MST_SEL);
REG_WRITE(I2C_MST_ANA_CONF1_REG, REGI2C_SAR_I2C_RD_MASK);
break;
}
return (uint8_t)(i2c_sel ? 0: 1);
}
uint8_t IRAM_ATTR regi2c_read_impl(uint8_t block, uint8_t host_id, uint8_t reg_add)
{
(void)host_id;
uint8_t i2c_sel = regi2c_enable_block(block);
while (REG_GET_BIT(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_BUSY)); // wait i2c idle
uint32_t temp = ((block & REGI2C_RTC_SLAVE_ID_V) << REGI2C_RTC_SLAVE_ID_S)
| (reg_add & REGI2C_RTC_ADDR_V) << REGI2C_RTC_ADDR_S;
REG_WRITE(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), temp);
while (REG_GET_BIT(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_BUSY));
uint8_t ret = REG_GET_FIELD(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_DATA);
return ret;
}
uint8_t IRAM_ATTR regi2c_read_mask_impl(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb)
{
assert(msb - lsb < 8);
uint8_t i2c_sel = regi2c_enable_block(block);
(void)host_id;
while (REG_GET_BIT(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_BUSY)); // wait i2c idle
uint32_t temp = ((block & REGI2C_RTC_SLAVE_ID_V) << REGI2C_RTC_SLAVE_ID_S)
| (reg_add & REGI2C_RTC_ADDR_V) << REGI2C_RTC_ADDR_S;
REG_WRITE(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), temp);
while (REG_GET_BIT(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_BUSY));
uint32_t data = REG_GET_FIELD(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_DATA);
uint8_t ret = (uint8_t)((data >> lsb) & (~(0xFFFFFFFF << (msb - lsb + 1))));
return ret;
}
void IRAM_ATTR regi2c_write_impl(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t data)
{
(void)host_id;
uint8_t i2c_sel = regi2c_enable_block(block);
while (REG_GET_BIT(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_BUSY)); // wait i2c idle
uint32_t temp = ((block & REGI2C_RTC_SLAVE_ID_V) << REGI2C_RTC_SLAVE_ID_S)
| ((reg_add & REGI2C_RTC_ADDR_V) << REGI2C_RTC_ADDR_S)
| ((0x1 & REGI2C_RTC_WR_CNTL_V) << REGI2C_RTC_WR_CNTL_S) // 0: READ I2C register; 1: Write I2C register;
| (((uint32_t)data & REGI2C_RTC_DATA_V) << REGI2C_RTC_DATA_S);
REG_WRITE(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), temp);
while (REG_GET_BIT(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_BUSY));
}
void IRAM_ATTR regi2c_write_mask_impl(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb, uint8_t data)
{
(void)host_id;
assert(msb - lsb < 8);
uint8_t i2c_sel = regi2c_enable_block(block);
while (REG_GET_BIT(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_BUSY));
/*Read the i2c bus register*/
uint32_t temp = ((block & REGI2C_RTC_SLAVE_ID_V) << REGI2C_RTC_SLAVE_ID_S)
| (reg_add & REGI2C_RTC_ADDR_V) << REGI2C_RTC_ADDR_S;
REG_WRITE(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), temp);
while (REG_GET_BIT(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_BUSY));
temp = REG_GET_FIELD(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_DATA);
/*Write the i2c bus register*/
temp &= ((~(0xFFFFFFFF << lsb)) | (0xFFFFFFFF << (msb + 1)));
temp = (((uint32_t)data & (~(0xFFFFFFFF << (msb - lsb + 1)))) << lsb) | temp;
temp = ((block & REGI2C_RTC_SLAVE_ID_V) << REGI2C_RTC_SLAVE_ID_S)
| ((reg_add & REGI2C_RTC_ADDR_V) << REGI2C_RTC_ADDR_S)
| ((0x1 & REGI2C_RTC_WR_CNTL_V) << REGI2C_RTC_WR_CNTL_S)
| ((temp & REGI2C_RTC_DATA_V) << REGI2C_RTC_DATA_S);
REG_WRITE(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), temp);
while (REG_GET_BIT(I2C_ANA_MST_I2C_CTRL_REG(i2c_sel), REGI2C_RTC_BUSY));
}