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esp-idf/components/esp_rom/patches/esp_rom_regi2c_esp32h2.c

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6.5 KiB
C
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/**
* 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_ULP_CAL_DEVICE_EN (BIT(6) << 4)
#define REGI2C_SAR_I2C_DEVICE_EN (BIT(7) << 4)
#define REGI2C_BBPLL_DEVICE_EN (BIT(5) << 4)
#define REGI2C_BIAS_DEVICE_EN (BIT(4) << 4)
#define REGI2C_DIG_REG_DEVICE_EN (BIT(8) << 4)
#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_DIG_REG (0x6d)
#define REGI2C_DIG_REG_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 */
static IRAM_ATTR void regi2c_enable_block(uint8_t block)
{
REG_SET_BIT(MODEM_LPCON_CLK_CONF_REG, MODEM_LPCON_CLK_I2C_MST_EN);
REG_SET_BIT(I2C_MST_DATE_REG, I2C_MST_CLK_EN);
REG_SET_FIELD(I2C_MST_ANA_CONF2_REG, I2C_MST_ANA_CONF2, 0);
/* Before config I2C register, enable corresponding slave. */
switch (block) {
case REGI2C_BBPLL :
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_BBPLL_DEVICE_EN);
break;
case REGI2C_BIAS :
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_BIAS_DEVICE_EN);
break;
case REGI2C_DIG_REG:
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_DIG_REG_DEVICE_EN);
break;
case REGI2C_ULP_CAL:
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_ULP_CAL_DEVICE_EN);
break;
case REGI2C_SAR_I2C:
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_SAR_I2C_DEVICE_EN);
break;
default:
return;
}
}
static IRAM_ATTR void regi2c_disable_block(uint8_t block)
{
switch (block) {
case REGI2C_BBPLL :
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_BBPLL_DEVICE_EN);
break;
case REGI2C_BIAS :
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_BIAS_DEVICE_EN);
break;
case REGI2C_DIG_REG:
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_DIG_REG_DEVICE_EN);
break;
case REGI2C_ULP_CAL:
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_ULP_CAL_DEVICE_EN);
break;
case REGI2C_SAR_I2C:
REG_SET_BIT(I2C_MST_ANA_CONF2_REG, REGI2C_SAR_I2C_DEVICE_EN);
break;
default:
return;
}
}
uint8_t IRAM_ATTR esp_rom_regi2c_read(uint8_t block, uint8_t host_id, uint8_t reg_add)
{
regi2c_enable_block(block);
(void)host_id;
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_MST_I2C0_CTRL_REG, temp);
while (REG_GET_BIT(I2C_MST_I2C0_CTRL_REG, REGI2C_RTC_BUSY));
uint8_t ret = REG_GET_FIELD(I2C_MST_I2C0_CTRL_REG, REGI2C_RTC_DATA);
regi2c_disable_block(block);
return ret;
}
uint8_t IRAM_ATTR esp_rom_regi2c_read_mask(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb)
{
assert(msb - lsb < 8);
regi2c_enable_block(block);
(void)host_id;
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_MST_I2C0_CTRL_REG, temp);
while (REG_GET_BIT(I2C_MST_I2C0_CTRL_REG, REGI2C_RTC_BUSY));
uint32_t data = REG_GET_FIELD(I2C_MST_I2C0_CTRL_REG, REGI2C_RTC_DATA);
uint8_t ret = (uint8_t)((data >> lsb) & (~(0xFFFFFFFF << (msb - lsb + 1))));
regi2c_disable_block(block);
return ret;
}
void IRAM_ATTR esp_rom_regi2c_write(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t data)
{
(void)host_id;
regi2c_enable_block(block);
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_MST_I2C0_CTRL_REG, temp);
while (REG_GET_BIT(I2C_MST_I2C0_CTRL_REG, REGI2C_RTC_BUSY));
regi2c_disable_block(block);
}
void IRAM_ATTR 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)
{
(void)host_id;
assert(msb - lsb < 8);
regi2c_enable_block(block);
/*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_MST_I2C0_CTRL_REG, temp);
while (REG_GET_BIT(I2C_MST_I2C0_CTRL_REG, REGI2C_RTC_BUSY));
temp = REG_GET_FIELD(I2C_MST_I2C0_CTRL_REG, 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_MST_I2C0_CTRL_REG, temp);
while (REG_GET_BIT(I2C_MST_I2C0_CTRL_REG, REGI2C_RTC_BUSY));
regi2c_disable_block(block);
}
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