drivers: i2c: Add STM32F10X slave support

Add i2c-slave support for STM3210X SoC series. Signed-off-by: Pavlo Hamov <pavlo_hamov@jabil.com>
zephyrproject-rtos · Jul 31, 2019 · dca45cb · dca45cb
1 parent b8b8d46
commit dca45cb
Show file tree

Hide file tree

Showing 3 changed files with 454 additions and 142 deletions.
diff --git a/drivers/i2c/Kconfig.stm32 b/drivers/i2c/Kconfig.stm32
@@ -17,6 +17,7 @@ config I2C_STM32_V1
 	depends on SOC_SERIES_STM32F1X || SOC_SERIES_STM32F4X || SOC_SERIES_STM32L1X
 	select HAS_DTS_I2C
 	select USE_STM32_LL_I2C
+	select I2C_STM32_INTERRUPT if I2C_SLAVE
 	help
 	  Enable I2C support on the STM32 F1 and F4X family of processors. This
 	  driver also supports the F2 and L1 series.

diff --git a/drivers/i2c/i2c_ll_stm32.c b/drivers/i2c/i2c_ll_stm32.c
@@ -60,10 +60,6 @@ static int i2c_stm32_transfer(struct device *dev, struct i2c_msg *msg,
 			      u8_t num_msgs, u16_t slave)
 {
 	struct i2c_stm32_data *data = DEV_DATA(dev);
-#if defined(CONFIG_I2C_STM32_V1)
-	const struct i2c_stm32_config *cfg = DEV_CFG(dev);
-	I2C_TypeDef *i2c = cfg->i2c;
-#endif
 	struct i2c_msg *current, *next;
 	int ret = 0;
 
@@ -113,9 +109,6 @@ static int i2c_stm32_transfer(struct device *dev, struct i2c_msg *msg,
 
 	/* Send out messages */
 	k_sem_take(&data->bus_mutex, K_FOREVER);
-#if defined(CONFIG_I2C_STM32_V1)
-	LL_I2C_Enable(i2c);
-#endif
 
 	current = msg;
 
@@ -164,17 +157,14 @@ static int i2c_stm32_transfer(struct device *dev, struct i2c_msg *msg,
 		num_msgs--;
 	}
 exit:
-#if defined(CONFIG_I2C_STM32_V1)
-	LL_I2C_Disable(i2c);
-#endif
 	k_sem_give(&data->bus_mutex);
 	return ret;
 }
 
 static const struct i2c_driver_api api_funcs = {
 	.configure = i2c_stm32_runtime_configure,
 	.transfer = i2c_stm32_transfer,
-#if defined(CONFIG_I2C_SLAVE) && defined(CONFIG_I2C_STM32_V2)
+#if defined(CONFIG_I2C_SLAVE)
 	.slave_register = i2c_stm32_slave_register,
 	.slave_unregister = i2c_stm32_slave_unregister,
 #endif