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drivers: i2c: stm32lx: Add support for I2C_2

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Add support for I2C_2 instance on stm32lx driver

Change-Id: Iaa17305dd21f92954274ca522d30d464e0a53b7b
Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2017-03-31 13:08:16 +02:00 committed by Kumar Gala
parent c27d1c88b4
commit 8e85600a30
2 changed files with 71 additions and 0 deletions
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27
drivers/i2c/Kconfig
View File

@ -218,6 +218,33 @@ config I2C_1_IRQ_PRI
help
IRQ priority.
config I2C_2
bool "Enable I2C Port 2"
depends on I2C
default n
config I2C_2_NAME
string "Select a name for finding the device"
default "I2C_2"
depends on I2C_2
config I2C_2_DEFAULT_CFG
hex "I2C default configuration"
depends on I2C_2
default 0x0
help
Allows the I2C port to be brought up with a default configuration.
This is useful to set if other drivers depend upon using the I2C bus
before the application has a chance to custom configure the port.
Setting this value does not prohibit the application from customizing
the values later. Refer to the I2C datasheet for proper values.
config I2C_2_IRQ_PRI
int "Controller interrupt priority"
depends on I2C_2 && I2C_0_IRQ_DIRECT
help
IRQ priority.
config I2C_SS_0
bool "Enable I2C_SS_0"
depends on I2C_QMSI_SS

44
drivers/i2c/i2c_stm32lx.c
View File

@ -475,3 +475,47 @@ static void i2c_stm32lx_irq_config_func_1(struct device *dev)
#endif
#endif /* CONFIG_I2C_1 */
#ifdef CONFIG_I2C_2
#ifdef CONFIG_I2C_STM32LX_INTERRUPT
static void i2c_stm32lx_irq_config_func_2(struct device *port);
#endif
static const struct i2c_stm32lx_config i2c_stm32lx_cfg_2 = {
.base = (uint8_t *)I2C1_BASE,
.pclken = { .bus = STM32_CLOCK_BUS_APB1,
.enr = LL_APB1_GRP1_PERIPH_I2C2 },
#ifdef CONFIG_I2C_STM32LX_INTERRUPT
.irq_config_func = i2c_stm32lx_irq_config_func_2,
#endif
};
static struct i2c_stm32lx_data i2c_stm32lx_dev_data_2 = {
.dev_config.raw = CONFIG_I2C_2_DEFAULT_CFG,
};
DEVICE_AND_API_INIT(i2c_stm32lx_2, CONFIG_I2C_2_NAME, &i2c_stm32lx_init,
&i2c_stm32lx_dev_data_2, &i2c_stm32lx_cfg_2,
POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEVICE,
&api_funcs);
#ifdef CONFIG_I2C_STM32LX_INTERRUPT
static void i2c_stm32lx_irq_config_func_2(struct device *dev)
{
#ifdef CONFIG_SOC_SERIES_STM32L4X
#define PORT_2_EV_IRQ STM32L4_IRQ_I2C2_EV
#define PORT_2_ER_IRQ STM32L4_IRQ_I2C2_ER
#endif
IRQ_CONNECT(PORT_2_EV_IRQ, CONFIG_I2C_2_IRQ_PRI,
i2c_stm32lx_ev_isr, DEVICE_GET(i2c_stm32lx_2), 0);
irq_enable(PORT_2_EV_IRQ);
IRQ_CONNECT(PORT_2_ER_IRQ, CONFIG_I2C_2_IRQ_PRI,
i2c_stm32lx_er_isr, DEVICE_GET(i2c_stm32lx_2), 0);
irq_enable(PORT_2_ER_IRQ);
}
#endif
#endif /* CONFIG_I2C_2 */