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regi2c: add a spinlock for accessing (reg)I2C devices

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When not compiling bootloader, a spinlock will be used for reading or writing
I2C internal devices/registers.
When compiling for bootloader, no need to use any lock.
This commit is contained in:
Omar Chebib
2021-03-30 14:50:27 +08:00
parent b22f9d2d42
commit 173e001680
7 changed files with 170 additions and 19 deletions
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33
components/esp_hw_support/port/esp32c3/regi2c_ctrl.h
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@@ -64,20 +64,45 @@ uint8_t rom_i2c_readReg_Mask(uint8_t block, uint8_t host_id, uint8_t reg_add, ui
void rom_i2c_writeReg(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t data);
void rom_i2c_writeReg_Mask(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb, uint8_t data);
#ifdef BOOTLOADER_BUILD
/**
* If compiling for the bootloader, ROM functions can be called directly,
* without the need of a lock.
*/
#define regi2c_ctrl_read_reg rom_i2c_readReg
#define regi2c_ctrl_read_reg_mask rom_i2c_readReg_Mask
#define regi2c_ctrl_write_reg rom_i2c_writeReg
#define regi2c_ctrl_write_reg_mask rom_i2c_writeReg_Mask
#else
#define i2c_read_reg_raw rom_i2c_readReg
#define i2c_read_reg_mask_raw rom_i2c_readReg_Mask
#define i2c_write_reg_raw rom_i2c_writeReg
#define i2c_write_reg_mask_raw rom_i2c_writeReg_Mask
uint8_t regi2c_ctrl_read_reg(uint8_t block, uint8_t host_id, uint8_t reg_add);
uint8_t regi2c_ctrl_read_reg_mask(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb);
void regi2c_ctrl_write_reg(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t data);
void regi2c_ctrl_write_reg_mask(uint8_t block, uint8_t host_id, uint8_t reg_add, uint8_t msb, uint8_t lsb, uint8_t data);
#endif // BOOTLOADER_BUILD
/* Convenience macros for the above functions, these use register definitions
* from regi2c_bbpll.h/regi2c_dig_reg.h/regi2c_lp_bias.h/regi2c_bias.h header files.
*/
#define REGI2C_WRITE_MASK(block, reg_add, indata) \
rom_i2c_writeReg_Mask(block, block##_HOSTID, reg_add, reg_add##_MSB, reg_add##_LSB, indata)
regi2c_ctrl_write_reg_mask(block, block##_HOSTID, reg_add, reg_add##_MSB, reg_add##_LSB, indata)
#define REGI2C_READ_MASK(block, reg_add) \
rom_i2c_readReg_Mask(block, block##_HOSTID, reg_add, reg_add##_MSB, reg_add##_LSB)
regi2c_ctrl_read_reg_mask(block, block##_HOSTID, reg_add, reg_add##_MSB, reg_add##_LSB)
#define REGI2C_WRITE(block, reg_add, indata) \
rom_i2c_writeReg(block, block##_HOSTID, reg_add, indata)
regi2c_ctrl_write_reg(block, block##_HOSTID, reg_add, indata)
#define REGI2C_READ(block, reg_add) \
rom_i2c_readReg(block, block##_HOSTID, reg_add)
regi2c_ctrl_read_reg(block, block##_HOSTID, reg_add)
#ifdef __cplusplus
}