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drivers: i2c: Support for i2c 10-bit addressing for STM32 target

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Fixes #51060. Support for i2c 10-bit addressing in STM32 slave driver

Signed-off-by: Ashwini M Shinde <AshwiniMShinde@eaton.com>
This commit is contained in:
Ashwini M Shinde 2022-10-28 12:13:57 +05:30 • committed by Fabio Baltieri
commit 0f6c7e3d9c
2 changed files with 17 additions and 8 deletions
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9
drivers/i2c/i2c_ll_stm32_v1.c
View file

@ -504,12 +504,13 @@ int i2c_stm32_target_register(const struct device *dev, struct i2c_target_config
LL_I2C_Enable(i2c);
LL_I2C_SetOwnAddress1(i2c, config->address << 1,
LL_I2C_OWNADDRESS1_7BIT);
if (data->slave_cfg->flags == I2C_TARGET_FLAGS_ADDR_10_BITS) {
return -ENOTSUP;
}
LL_I2C_SetOwnAddress1(i2c, config->address << 1U, LL_I2C_OWNADDRESS1_7BIT);
data->slave_attached = true;
LOG_DBG("i2c: slave registered");
LOG_DBG("i2c: target registered");
stm32_i2c_enable_transfer_interrupts(dev);
LL_I2C_AcknowledgeNextData(i2c, LL_I2C_ACK);

16
drivers/i2c/i2c_ll_stm32_v2.c
View file

@ -224,19 +224,27 @@ int i2c_stm32_target_register(const struct device *dev,
if (!data->slave_cfg) {
data->slave_cfg = config;
if (data->slave_cfg->flags == I2C_TARGET_FLAGS_ADDR_10_BITS) {
LL_I2C_SetOwnAddress1(i2c, config->address, LL_I2C_OWNADDRESS1_10BIT);
LOG_DBG("i2c: target #1 registered with 10-bit address");
} else {
LL_I2C_SetOwnAddress1(i2c, config->address << 1U, LL_I2C_OWNADDRESS1_7BIT);
LOG_DBG("i2c: target #1 registered with 7-bit address");
}
LL_I2C_SetOwnAddress1(i2c, config->address << 1U,
LL_I2C_OWNADDRESS1_7BIT);
LL_I2C_EnableOwnAddress1(i2c);
LOG_DBG("i2c: slave #1 registered");
LOG_DBG("i2c: target #1 registered");
} else {
data->slave2_cfg = config;
if (data->slave2_cfg->flags == I2C_TARGET_FLAGS_ADDR_10_BITS) {
return -EINVAL;
}
LL_I2C_SetOwnAddress2(i2c, config->address << 1U,
LL_I2C_OWNADDRESS2_NOMASK);
LL_I2C_EnableOwnAddress2(i2c);
LOG_DBG("i2c: slave #2 registered");
LOG_DBG("i2c: target #2 registered");
}
data->slave_attached = true;