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* Copyright (c) 2019 STMicroelectronics
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <soc.h>
#include <stm32_ll_bus.h>
#include <stm32_ll_rcc.h>
#include <drivers/clock_control.h>
#include <sys/util.h>
#include <drivers/clock_control/stm32_clock_control.h>
/**
* @brief fill in AHB/APB buses configuration structure
*/
static inline int stm32_clock_control_on(const struct device *dev,
clock_control_subsys_t sub_system)
{
struct stm32_pclken *pclken = (struct stm32_pclken *)(sub_system);
ARG_UNUSED(dev);
switch (pclken->bus) {
case STM32_CLOCK_BUS_APB1:
LL_APB1_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_APB2:
LL_APB2_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_APB3:
LL_APB3_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_APB4:
LL_APB4_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_APB5:
LL_APB5_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB2:
LL_AHB2_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB3:
LL_AHB3_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB4:
LL_AHB4_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB5:
LL_AHB5_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB6:
LL_AHB6_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AXI:
LL_AXI_GRP1_EnableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_MLAHB:
LL_MLAHB_GRP1_EnableClock(pclken->enr);
break;
default:
return -ENOTSUP;
}
return 0;
}
static inline int stm32_clock_control_off(const struct device *dev,
clock_control_subsys_t sub_system)
{
struct stm32_pclken *pclken = (struct stm32_pclken *)(sub_system);
ARG_UNUSED(dev);
switch (pclken->bus) {
case STM32_CLOCK_BUS_APB1:
LL_APB1_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_APB2:
LL_APB2_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_APB3:
LL_APB3_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_APB4:
LL_APB4_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_APB5:
LL_APB5_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB2:
LL_AHB2_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB3:
LL_AHB3_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB4:
LL_AHB4_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB5:
LL_AHB5_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AHB6:
LL_AHB6_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_AXI:
LL_AXI_GRP1_DisableClock(pclken->enr);
break;
case STM32_CLOCK_BUS_MLAHB:
LL_MLAHB_GRP1_DisableClock(pclken->enr);
break;
default:
return -ENOTSUP;
}
return 0;
}
static int stm32_clock_control_get_subsys_rate(const struct device *clock,
clock_control_subsys_t sub_system,
uint32_t *rate)
{
struct stm32_pclken *pclken = (struct stm32_pclken *)(sub_system);
ARG_UNUSED(clock);
switch (pclken->bus) {
case STM32_CLOCK_BUS_APB1:
switch (pclken->enr) {
case LL_APB1_GRP1_PERIPH_TIM2:
case LL_APB1_GRP1_PERIPH_TIM3:
case LL_APB1_GRP1_PERIPH_TIM4:
case LL_APB1_GRP1_PERIPH_TIM5:
case LL_APB1_GRP1_PERIPH_TIM6:
case LL_APB1_GRP1_PERIPH_TIM7:
case LL_APB1_GRP1_PERIPH_TIM12:
case LL_APB1_GRP1_PERIPH_TIM13:
case LL_APB1_GRP1_PERIPH_TIM14:
*rate = LL_RCC_GetTIMGClockFreq(LL_RCC_TIMG1PRES);
break;
case LL_APB1_GRP1_PERIPH_LPTIM1:
*rate = LL_RCC_GetLPTIMClockFreq(
LL_RCC_LPTIM1_CLKSOURCE);
break;
case LL_APB1_GRP1_PERIPH_SPI2:
case LL_APB1_GRP1_PERIPH_SPI3:
*rate = LL_RCC_GetSPIClockFreq(LL_RCC_SPI23_CLKSOURCE);
break;
case LL_APB1_GRP1_PERIPH_USART2:
case LL_APB1_GRP1_PERIPH_UART4:
*rate = LL_RCC_GetUARTClockFreq(
LL_RCC_UART24_CLKSOURCE);
break;
case LL_APB1_GRP1_PERIPH_USART3:
case LL_APB1_GRP1_PERIPH_UART5:
*rate = LL_RCC_GetUARTClockFreq(
LL_RCC_UART35_CLKSOURCE);
break;
case LL_APB1_GRP1_PERIPH_UART7:
case LL_APB1_GRP1_PERIPH_UART8:
*rate = LL_RCC_GetUARTClockFreq(
LL_RCC_UART78_CLKSOURCE);
break;
case LL_APB1_GRP1_PERIPH_I2C1:
case LL_APB1_GRP1_PERIPH_I2C2:
*rate = LL_RCC_GetI2CClockFreq(LL_RCC_I2C12_CLKSOURCE);
break;
case LL_APB1_GRP1_PERIPH_I2C3:
case LL_APB1_GRP1_PERIPH_I2C5:
*rate = LL_RCC_GetI2CClockFreq(LL_RCC_I2C35_CLKSOURCE);
break;
case LL_APB1_GRP1_PERIPH_SPDIF:
*rate = LL_RCC_GetSPDIFRXClockFreq(
LL_RCC_SPDIFRX_CLKSOURCE);
break;
case LL_APB1_GRP1_PERIPH_CEC:
*rate = LL_RCC_GetCECClockFreq(LL_RCC_CEC_CLKSOURCE);
break;
case LL_APB1_GRP1_PERIPH_WWDG1:
case LL_APB1_GRP1_PERIPH_DAC12:
case LL_APB1_GRP1_PERIPH_MDIOS:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_APB2:
switch (pclken->enr) {
case LL_APB2_GRP1_PERIPH_TIM1:
case LL_APB2_GRP1_PERIPH_TIM8:
case LL_APB2_GRP1_PERIPH_TIM15:
case LL_APB2_GRP1_PERIPH_TIM16:
case LL_APB2_GRP1_PERIPH_TIM17:
*rate = LL_RCC_GetTIMGClockFreq(LL_RCC_TIMG2PRES);
break;
case LL_APB2_GRP1_PERIPH_SPI1:
*rate = LL_RCC_GetSPIClockFreq(LL_RCC_SPI1_CLKSOURCE);
break;
case LL_APB2_GRP1_PERIPH_SPI4:
case LL_APB2_GRP1_PERIPH_SPI5:
*rate = LL_RCC_GetSPIClockFreq(LL_RCC_SPI45_CLKSOURCE);
break;
case LL_APB2_GRP1_PERIPH_USART6:
*rate = LL_RCC_GetUARTClockFreq(
LL_RCC_USART6_CLKSOURCE);
break;
case LL_APB2_GRP1_PERIPH_SAI1:
*rate = LL_RCC_GetSAIClockFreq(LL_RCC_SAI1_CLKSOURCE);
break;
case LL_APB2_GRP1_PERIPH_SAI2:
*rate = LL_RCC_GetSAIClockFreq(LL_RCC_SAI2_CLKSOURCE);
break;
case LL_APB2_GRP1_PERIPH_SAI3:
*rate = LL_RCC_GetSAIClockFreq(LL_RCC_SAI3_CLKSOURCE);
break;
case LL_APB2_GRP1_PERIPH_DFSDM1:
*rate = LL_RCC_GetDFSDMClockFreq(
LL_RCC_DFSDM_CLKSOURCE);
break;
case LL_APB2_GRP1_PERIPH_FDCAN:
*rate = LL_RCC_GetFDCANClockFreq(
LL_RCC_FDCAN_CLKSOURCE);
break;
case LL_APB2_GRP1_PERIPH_ADFSDM1:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_APB3:
switch (pclken->enr) {
case LL_APB3_GRP1_PERIPH_LPTIM2:
case LL_APB3_GRP1_PERIPH_LPTIM3:
*rate = LL_RCC_GetLPTIMClockFreq(
LL_RCC_LPTIM23_CLKSOURCE);
break;
case LL_APB3_GRP1_PERIPH_LPTIM4:
case LL_APB3_GRP1_PERIPH_LPTIM5:
*rate = LL_RCC_GetLPTIMClockFreq(
LL_RCC_LPTIM45_CLKSOURCE);
break;
case LL_APB3_GRP1_PERIPH_SAI4:
*rate = LL_RCC_GetSAIClockFreq(LL_RCC_SAI4_CLKSOURCE);
break;
case LL_APB3_GRP1_PERIPH_SYSCFG:
case LL_APB3_GRP1_PERIPH_VREF:
case LL_APB3_GRP1_PERIPH_TMPSENS:
case LL_APB3_GRP1_PERIPH_HDP:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_APB4:
switch (pclken->enr) {
case LL_APB4_GRP1_PERIPH_LTDC:
*rate = LL_RCC_GetLTDCClockFreq();
break;
case LL_APB4_GRP1_PERIPH_DSI:
*rate = LL_RCC_GetDSIClockFreq(LL_RCC_DSI_CLKSOURCE);
break;
case LL_APB4_GRP1_PERIPH_USBPHY:
*rate = LL_RCC_GetUSBPHYClockFreq(
LL_RCC_USBPHY_CLKSOURCE);
break;
case LL_APB4_GRP1_PERIPH_DDRPERFM:
case LL_APB4_GRP1_PERIPH_STGENRO:
case LL_APB4_GRP1_PERIPH_STGENROSTP:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_APB5:
switch (pclken->enr) {
case LL_APB5_GRP1_PERIPH_SPI6:
*rate = LL_RCC_GetSPIClockFreq(LL_RCC_SPI6_CLKSOURCE);
break;
case LL_APB5_GRP1_PERIPH_I2C4:
case LL_APB5_GRP1_PERIPH_I2C6:
*rate = LL_RCC_GetI2CClockFreq(LL_RCC_I2C46_CLKSOURCE);
break;
case LL_APB5_GRP1_PERIPH_USART1:
*rate = LL_RCC_GetUARTClockFreq(
LL_RCC_USART1_CLKSOURCE);
break;
case LL_APB5_GRP1_PERIPH_STGEN:
case LL_APB5_GRP1_PERIPH_STGENSTP:
*rate = LL_RCC_GetSTGENClockFreq(
LL_RCC_STGEN_CLKSOURCE);
break;
case LL_APB5_GRP1_PERIPH_RTCAPB:
*rate = LL_RCC_GetRTCClockFreq();
break;
case LL_APB5_GRP1_PERIPH_TZC1:
case LL_APB5_GRP1_PERIPH_TZC2:
case LL_APB5_GRP1_PERIPH_TZPC:
case LL_APB5_GRP1_PERIPH_BSEC:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_AHB2:
switch (pclken->enr) {
case LL_AHB2_GRP1_PERIPH_ADC12:
*rate = LL_RCC_GetADCClockFreq(LL_RCC_ADC_CLKSOURCE);
break;
case LL_AHB2_GRP1_PERIPH_USBO:
*rate = LL_RCC_GetUSBOClockFreq(LL_RCC_USBO_CLKSOURCE);
break;
case LL_AHB2_GRP1_PERIPH_SDMMC3:
*rate = LL_RCC_GetSDMMCClockFreq(
LL_RCC_SDMMC3_CLKSOURCE);
break;
case LL_AHB2_GRP1_PERIPH_DMA1:
case LL_AHB2_GRP1_PERIPH_DMA2:
case LL_AHB2_GRP1_PERIPH_DMAMUX:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_AHB3:
switch (pclken->enr) {
case LL_AHB3_GRP1_PERIPH_RNG2:
*rate = LL_RCC_GetRNGClockFreq(LL_RCC_RNG2_CLKSOURCE);
break;
case LL_AHB3_GRP1_PERIPH_DCMI:
case LL_AHB3_GRP1_PERIPH_CRYP2:
case LL_AHB3_GRP1_PERIPH_HASH2:
case LL_AHB3_GRP1_PERIPH_CRC2:
case LL_AHB3_GRP1_PERIPH_HSEM:
case LL_AHB3_GRP1_PERIPH_IPCC:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_AHB4:
return -ENOTSUP;
case STM32_CLOCK_BUS_AHB5:
switch (pclken->enr) {
case LL_AHB5_GRP1_PERIPH_RNG1:
*rate = LL_RCC_GetRNGClockFreq(LL_RCC_RNG1_CLKSOURCE);
break;
case LL_AHB5_GRP1_PERIPH_GPIOZ:
case LL_AHB5_GRP1_PERIPH_CRYP1:
case LL_AHB5_GRP1_PERIPH_HASH1:
case LL_AHB5_GRP1_PERIPH_BKPSRAM:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_AHB6:
switch (pclken->enr) {
case LL_AHB6_GRP1_PERIPH_ETH1CK:
case LL_AHB6_GRP1_PERIPH_ETH1TX:
case LL_AHB6_GRP1_PERIPH_ETH1RX:
case LL_AHB6_GRP1_PERIPH_ETH1MAC:
case LL_AHB6_GRP1_PERIPH_ETH1STP:
*rate = LL_RCC_GetETHClockFreq(LL_RCC_ETH_CLKSOURCE);
break;
case LL_AHB6_GRP1_PERIPH_FMC:
*rate = LL_RCC_GetFMCClockFreq(LL_RCC_FMC_CLKSOURCE);
break;
case LL_AHB6_GRP1_PERIPH_QSPI:
*rate = LL_RCC_GetQSPIClockFreq(LL_RCC_QSPI_CLKSOURCE);
break;
case LL_AHB6_GRP1_PERIPH_SDMMC1:
case LL_AHB6_GRP1_PERIPH_SDMMC2:
*rate = LL_RCC_GetSDMMCClockFreq(
LL_RCC_SDMMC12_CLKSOURCE);
break;
case LL_AHB6_GRP1_PERIPH_MDMA:
case LL_AHB6_GRP1_PERIPH_GPU:
case LL_AHB6_GRP1_PERIPH_CRC1:
case LL_AHB6_GRP1_PERIPH_USBH:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_AXI:
switch (pclken->enr) {
case LL_AXI_GRP1_PERIPH_SYSRAMEN:
default:
return -ENOTSUP;
}
break;
case STM32_CLOCK_BUS_MLAHB:
switch (pclken->enr) {
case LL_MLAHB_GRP1_PERIPH_RETRAMEN:
default:
return -ENOTSUP;
}
break;
default:
return -ENOTSUP;
}
return 0;
}
static struct clock_control_driver_api stm32_clock_control_api = {
.on = stm32_clock_control_on,
.off = stm32_clock_control_off,
.get_rate = stm32_clock_control_get_subsys_rate,
};
static int stm32_clock_control_init(const struct device *dev)
{
ARG_UNUSED(dev);
return 0;
}
/**
* @brief RCC device, note that priority is intentionally set to 1 so
* that the device init runs just after SOC init
*/
DEVICE_DT_DEFINE(DT_NODELABEL(rcc),
&stm32_clock_control_init,
NULL,
NULL, NULL,
PRE_KERNEL_1,
CONFIG_CLOCK_CONTROL_STM32_DEVICE_INIT_PRIORITY,
&stm32_clock_control_api);
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