unleashed-firmware/firmware/targets/f7/furi_hal/furi_hal_bus.c

#include <furi_hal_bus.h>
#include <furi.h>

#include <stm32wbxx_ll_bus.h>

/* Bus bitmask definitions */
#define FURI_HAL_BUS_IGNORE (0x0U)

#define FURI_HAL_BUS_AHB1_GRP1                                                           \
    (LL_AHB1_GRP1_PERIPH_DMA1 | LL_AHB1_GRP1_PERIPH_DMA2 | LL_AHB1_GRP1_PERIPH_DMAMUX1 | \
     LL_AHB1_GRP1_PERIPH_CRC | LL_AHB1_GRP1_PERIPH_TSC)

#if defined(ADC_SUPPORT_5_MSPS)
#define FURI_HAL_BUS_AHB2_GRP1                                                           \
    (LL_AHB2_GRP1_PERIPH_GPIOA | LL_AHB2_GRP1_PERIPH_GPIOB | LL_AHB2_GRP1_PERIPH_GPIOC | \
     LL_AHB2_GRP1_PERIPH_GPIOD | LL_AHB2_GRP1_PERIPH_GPIOE | LL_AHB2_GRP1_PERIPH_GPIOH | \
     LL_AHB2_GRP1_PERIPH_ADC | LL_AHB2_GRP1_PERIPH_AES1)

#define FURI_HAL_BUS_APB2_GRP1                                                          \
    (LL_APB2_GRP1_PERIPH_TIM1 | LL_APB2_GRP1_PERIPH_SPI1 | LL_APB2_GRP1_PERIPH_USART1 | \
     LL_APB2_GRP1_PERIPH_TIM16 | LL_APB2_GRP1_PERIPH_TIM17 | LL_APB2_GRP1_PERIPH_SAI1)
#else
#define FURI_HAL_BUS_AHB2_GRP1                                                           \
    (LL_AHB2_GRP1_PERIPH_GPIOA | LL_AHB2_GRP1_PERIPH_GPIOB | LL_AHB2_GRP1_PERIPH_GPIOC | \
     LL_AHB2_GRP1_PERIPH_GPIOD | LL_AHB2_GRP1_PERIPH_GPIOE | LL_AHB2_GRP1_PERIPH_GPIOH | \
     LL_AHB2_GRP1_PERIPH_AES1)

#define FURI_HAL_BUS_APB2_GRP1                                                            \
    (LL_APB2_GRP1_PERIPH_ADC | LL_APB2_GRP1_PERIPH_TIM1 | LL_APB2_GRP1_PERIPH_SPI1 |      \
     LL_APB2_GRP1_PERIPH_USART1 | LL_APB2_GRP1_PERIPH_TIM16 | LL_APB2_GRP1_PERIPH_TIM17 | \
     LL_APB2_GRP1_PERIPH_SAI1)
#endif

#define FURI_HAL_BUS_AHB3_GRP1                                                          \
    (LL_AHB3_GRP1_PERIPH_QUADSPI | LL_AHB3_GRP1_PERIPH_PKA | LL_AHB3_GRP1_PERIPH_AES2 | \
     LL_AHB3_GRP1_PERIPH_RNG | LL_AHB3_GRP1_PERIPH_HSEM | LL_AHB3_GRP1_PERIPH_IPCC)
//   LL_AHB3_GRP1_PERIPH_FLASH enabled by default

#define FURI_HAL_BUS_APB1_GRP1                                                       \
    (LL_APB1_GRP1_PERIPH_TIM2 | LL_APB1_GRP1_PERIPH_LCD | LL_APB1_GRP1_PERIPH_SPI2 | \
     LL_APB1_GRP1_PERIPH_I2C1 | LL_APB1_GRP1_PERIPH_I2C3 | LL_APB1_GRP1_PERIPH_CRS | \
     LL_APB1_GRP1_PERIPH_USB | LL_APB1_GRP1_PERIPH_LPTIM1)

#define FURI_HAL_BUS_APB1_GRP2 (LL_APB1_GRP2_PERIPH_LPUART1 | LL_APB1_GRP2_PERIPH_LPTIM2)
#define FURI_HAL_BUS_APB3_GRP1 (LL_APB3_GRP1_PERIPH_RF)

/* Test macro definitions */
#define FURI_HAL_BUS_IS_ALL_CLEAR(reg, value) (READ_BIT((reg), (value)) == 0UL)
#define FURI_HAL_BUS_IS_ALL_SET(reg, value) (READ_BIT((reg), (value)) == (value))

#define FURI_HAL_BUS_IS_CLOCK_ENABLED(bus, value, ...) \
    (FURI_HAL_BUS_IS_ALL_SET(RCC->bus##ENR##__VA_ARGS__, (value)))
#define FURI_HAL_BUS_IS_CLOCK_DISABLED(bus, value, ...) \
    (FURI_HAL_BUS_IS_ALL_CLEAR(RCC->bus##ENR##__VA_ARGS__, (value)))

#define FURI_HAL_BUS_IS_RESET_ASSERTED(bus, value, ...) \
    (FURI_HAL_BUS_IS_ALL_SET(RCC->bus##RSTR##__VA_ARGS__, (value)))
#define FURI_HAL_BUS_IS_RESET_DEASSERTED(bus, value, ...) \
    (FURI_HAL_BUS_IS_ALL_CLEAR(RCC->bus##RSTR##__VA_ARGS__, (value)))

#define FURI_HAL_BUS_IS_PERIPH_ENABLED(bus, value, ...)             \
    (FURI_HAL_BUS_IS_RESET_DEASSERTED(bus, (value), __VA_ARGS__) && \
     FURI_HAL_BUS_IS_CLOCK_ENABLED(bus, (value), __VA_ARGS__))

#define FURI_HAL_BUS_IS_PERIPH_DISABLED(bus, value, ...)          \
    (FURI_HAL_BUS_IS_CLOCK_DISABLED(bus, (value), __VA_ARGS__) && \
     FURI_HAL_BUS_IS_RESET_ASSERTED(bus, (value), __VA_ARGS__))

/* Control macro definitions */
#define FURI_HAL_BUS_RESET_ASSERT(bus, value, grp) LL_##bus##_GRP##grp##_ForceReset(value)
#define FURI_HAL_BUS_RESET_DEASSERT(bus, value, grp) LL_##bus##_GRP##grp##_ReleaseReset(value)

#define FURI_HAL_BUS_CLOCK_ENABLE(bus, value, grp) LL_##bus##_GRP##grp##_EnableClock(value)
#define FURI_HAL_BUS_CLOCK_DISABLE(bus, value, grp) LL_##bus##_GRP##grp##_DisableClock(value)

#define FURI_HAL_BUS_PERIPH_ENABLE(bus, value, grp) \
    FURI_HAL_BUS_CLOCK_ENABLE(bus, value, grp);     \
    FURI_HAL_BUS_RESET_DEASSERT(bus, value, grp)

#define FURI_HAL_BUS_PERIPH_DISABLE(bus, value, grp) \
    FURI_HAL_BUS_RESET_ASSERT(bus, value, grp);      \
    FURI_HAL_BUS_CLOCK_DISABLE(bus, value, grp)

#define FURI_HAL_BUS_PERIPH_RESET(bus, value, grp) \
    FURI_HAL_BUS_RESET_ASSERT(bus, value, grp);    \
    FURI_HAL_BUS_RESET_DEASSERT(bus, value, grp)

static const uint32_t furi_hal_bus[] = {
    [FuriHalBusAHB1_GRP1] = FURI_HAL_BUS_IGNORE,
    [FuriHalBusDMA1] = LL_AHB1_GRP1_PERIPH_DMA1,
    [FuriHalBusDMA2] = LL_AHB1_GRP1_PERIPH_DMA2,
    [FuriHalBusDMAMUX1] = LL_AHB1_GRP1_PERIPH_DMAMUX1,
    [FuriHalBusCRC] = LL_AHB1_GRP1_PERIPH_CRC,
    [FuriHalBusTSC] = LL_AHB1_GRP1_PERIPH_TSC,

    [FuriHalBusAHB2_GRP1] = FURI_HAL_BUS_IGNORE,
    [FuriHalBusGPIOA] = LL_AHB2_GRP1_PERIPH_GPIOA,
    [FuriHalBusGPIOB] = LL_AHB2_GRP1_PERIPH_GPIOB,
    [FuriHalBusGPIOC] = LL_AHB2_GRP1_PERIPH_GPIOC,
    [FuriHalBusGPIOD] = LL_AHB2_GRP1_PERIPH_GPIOD,
    [FuriHalBusGPIOE] = LL_AHB2_GRP1_PERIPH_GPIOE,
    [FuriHalBusGPIOH] = LL_AHB2_GRP1_PERIPH_GPIOH,
#if defined(ADC_SUPPORT_5_MSPS)
    [FuriHalBusADC] = LL_AHB2_GRP1_PERIPH_ADC,
#endif
    [FuriHalBusAES1] = LL_AHB2_GRP1_PERIPH_AES1,

    [FuriHalBusAHB3_GRP1] = FURI_HAL_BUS_IGNORE,
    [FuriHalBusQUADSPI] = LL_AHB3_GRP1_PERIPH_QUADSPI,
    [FuriHalBusPKA] = LL_AHB3_GRP1_PERIPH_PKA,
    [FuriHalBusAES2] = LL_AHB3_GRP1_PERIPH_AES2,
    [FuriHalBusRNG] = LL_AHB3_GRP1_PERIPH_RNG,
    [FuriHalBusHSEM] = LL_AHB3_GRP1_PERIPH_HSEM,
    [FuriHalBusIPCC] = LL_AHB3_GRP1_PERIPH_IPCC,
    [FuriHalBusFLASH] = LL_AHB3_GRP1_PERIPH_FLASH,

    [FuriHalBusAPB1_GRP1] = FURI_HAL_BUS_APB1_GRP1,
    [FuriHalBusTIM2] = LL_APB1_GRP1_PERIPH_TIM2,
    [FuriHalBusLCD] = LL_APB1_GRP1_PERIPH_LCD,
    [FuriHalBusSPI2] = LL_APB1_GRP1_PERIPH_SPI2,
    [FuriHalBusI2C1] = LL_APB1_GRP1_PERIPH_I2C1,
    [FuriHalBusI2C3] = LL_APB1_GRP1_PERIPH_I2C3,
    [FuriHalBusCRS] = LL_APB1_GRP1_PERIPH_CRS,
    [FuriHalBusUSB] = LL_APB1_GRP1_PERIPH_USB,
    [FuriHalBusLPTIM1] = LL_APB1_GRP1_PERIPH_LPTIM1,

    [FuriHalBusAPB1_GRP2] = FURI_HAL_BUS_APB1_GRP2,
    [FuriHalBusLPUART1] = LL_APB1_GRP2_PERIPH_LPUART1,
    [FuriHalBusLPTIM2] = LL_APB1_GRP2_PERIPH_LPTIM2,

    [FuriHalBusAPB2_GRP1] = FURI_HAL_BUS_APB2_GRP1,
#if defined(ADC_SUPPORT_2_5_MSPS)
    [FuriHalBusADC] = LL_APB2_GRP1_PERIPH_ADC,
#endif
    [FuriHalBusTIM1] = LL_APB2_GRP1_PERIPH_TIM1,
    [FuriHalBusSPI1] = LL_APB2_GRP1_PERIPH_SPI1,
    [FuriHalBusUSART1] = LL_APB2_GRP1_PERIPH_USART1,
    [FuriHalBusTIM16] = LL_APB2_GRP1_PERIPH_TIM16,
    [FuriHalBusTIM17] = LL_APB2_GRP1_PERIPH_TIM17,
    [FuriHalBusSAI1] = LL_APB2_GRP1_PERIPH_SAI1,

    [FuriHalBusAPB3_GRP1] = FURI_HAL_BUS_IGNORE, // APB3_GRP1 clocking cannot be changed
    [FuriHalBusRF] = LL_APB3_GRP1_PERIPH_RF,
};

void furi_hal_bus_init_early() {
    FURI_CRITICAL_ENTER();

    // FURI_HAL_BUS_PERIPH_DISABLE(AHB1, FURI_HAL_BUS_AHB1_GRP1, 1);
    // FURI_HAL_BUS_PERIPH_DISABLE(AHB2, FURI_HAL_BUS_AHB2_GRP1, 1);
    // FURI_HAL_BUS_PERIPH_DISABLE(AHB3, FURI_HAL_BUS_AHB3_GRP1, 1);
    FURI_HAL_BUS_PERIPH_DISABLE(APB1, FURI_HAL_BUS_APB1_GRP1, 1);
    FURI_HAL_BUS_PERIPH_DISABLE(APB1, FURI_HAL_BUS_APB1_GRP2, 2);
    FURI_HAL_BUS_PERIPH_DISABLE(APB2, FURI_HAL_BUS_APB2_GRP1, 1);

    FURI_HAL_BUS_RESET_ASSERT(APB3, FURI_HAL_BUS_APB3_GRP1, 1);

    FURI_CRITICAL_EXIT();
}

void furi_hal_bus_deinit_early() {
    FURI_CRITICAL_ENTER();

    // FURI_HAL_BUS_PERIPH_ENABLE(AHB1, FURI_HAL_BUS_AHB1_GRP1, 1);
    // FURI_HAL_BUS_PERIPH_ENABLE(AHB2, FURI_HAL_BUS_AHB2_GRP1, 1);
    // FURI_HAL_BUS_PERIPH_ENABLE(AHB3, FURI_HAL_BUS_AHB3_GRP1, 1);
    FURI_HAL_BUS_PERIPH_ENABLE(APB1, FURI_HAL_BUS_APB1_GRP1, 1);
    FURI_HAL_BUS_PERIPH_ENABLE(APB1, FURI_HAL_BUS_APB1_GRP2, 2);
    FURI_HAL_BUS_PERIPH_ENABLE(APB2, FURI_HAL_BUS_APB2_GRP1, 1);

    FURI_HAL_BUS_RESET_DEASSERT(APB3, FURI_HAL_BUS_APB3_GRP1, 1);

    FURI_CRITICAL_EXIT();
}

void furi_hal_bus_enable(FuriHalBus bus) {
    furi_check(bus < FuriHalBusMAX);
    const uint32_t value = furi_hal_bus[bus];
    if(!value) {
        return;
    }

    FURI_CRITICAL_ENTER();
    if(bus < FuriHalBusAHB2_GRP1) {
        // furi_check(FURI_HAL_BUS_IS_PERIPH_DISABLED(AHB1, value));
        FURI_HAL_BUS_PERIPH_ENABLE(AHB1, value, 1);
    } else if(bus < FuriHalBusAHB3_GRP1) {
        // furi_check(FURI_HAL_BUS_IS_PERIPH_DISABLED(AHB2, value));
        FURI_HAL_BUS_PERIPH_ENABLE(AHB2, value, 1);
    } else if(bus < FuriHalBusAPB1_GRP1) {
        // furi_check(FURI_HAL_BUS_IS_PERIPH_DISABLED(AHB3, value));
        FURI_HAL_BUS_PERIPH_ENABLE(AHB3, value, 1);
    } else if(bus < FuriHalBusAPB1_GRP2) {
        furi_check(FURI_HAL_BUS_IS_PERIPH_DISABLED(APB1, value, 1));
        FURI_HAL_BUS_PERIPH_ENABLE(APB1, value, 1);
    } else if(bus < FuriHalBusAPB2_GRP1) {
        furi_check(FURI_HAL_BUS_IS_PERIPH_DISABLED(APB1, value, 2));
        FURI_HAL_BUS_PERIPH_ENABLE(APB1, value, 2);
    } else if(bus < FuriHalBusAPB3_GRP1) {
        furi_check(FURI_HAL_BUS_IS_PERIPH_DISABLED(APB2, value));
        FURI_HAL_BUS_PERIPH_ENABLE(APB2, value, 1);
    } else {
        furi_check(FURI_HAL_BUS_IS_RESET_ASSERTED(APB3, value));
        FURI_HAL_BUS_RESET_DEASSERT(APB3, FURI_HAL_BUS_APB3_GRP1, 1);
    }
    FURI_CRITICAL_EXIT();
}

void furi_hal_bus_reset(FuriHalBus bus) {
    furi_check(bus < FuriHalBusMAX);
    const uint32_t value = furi_hal_bus[bus];
    if(!value) {
        return;
    }

    FURI_CRITICAL_ENTER();
    if(bus < FuriHalBusAHB2_GRP1) {
        // furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(AHB1, value));
        FURI_HAL_BUS_PERIPH_RESET(AHB1, value, 1);
    } else if(bus < FuriHalBusAHB3_GRP1) {
        // furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(AHB2, value));
        FURI_HAL_BUS_PERIPH_RESET(AHB2, value, 1);
    } else if(bus < FuriHalBusAPB1_GRP1) {
        // furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(AHB3, value));
        FURI_HAL_BUS_PERIPH_RESET(AHB3, value, 1);
    } else if(bus < FuriHalBusAPB1_GRP2) {
        furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(APB1, value, 1));
        FURI_HAL_BUS_PERIPH_RESET(APB1, value, 1);
    } else if(bus < FuriHalBusAPB2_GRP1) {
        furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(APB1, value, 2));
        FURI_HAL_BUS_PERIPH_RESET(APB1, value, 2);
    } else if(bus < FuriHalBusAPB3_GRP1) {
        furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(APB2, value));
        FURI_HAL_BUS_PERIPH_RESET(APB2, value, 1);
    } else {
        furi_check(FURI_HAL_BUS_IS_RESET_DEASSERTED(APB3, value));
        FURI_HAL_BUS_PERIPH_RESET(APB3, value, 1);
    }
    FURI_CRITICAL_EXIT();
}

void furi_hal_bus_disable(FuriHalBus bus) {
    furi_check(bus < FuriHalBusMAX);
    const uint32_t value = furi_hal_bus[bus];
    if(!value) {
        return;
    }

    FURI_CRITICAL_ENTER();
    if(bus < FuriHalBusAHB2_GRP1) {
        // furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(AHB1, value));
        FURI_HAL_BUS_PERIPH_DISABLE(AHB1, value, 1);
    } else if(bus < FuriHalBusAHB3_GRP1) {
        // furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(AHB2, value));
        FURI_HAL_BUS_PERIPH_DISABLE(AHB2, value, 1);
    } else if(bus < FuriHalBusAPB1_GRP1) {
        // furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(AHB3, value));
        FURI_HAL_BUS_PERIPH_DISABLE(AHB3, value, 1);
    } else if(bus < FuriHalBusAPB1_GRP2) {
        furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(APB1, value, 1));
        FURI_HAL_BUS_PERIPH_DISABLE(APB1, value, 1);
    } else if(bus < FuriHalBusAPB2_GRP1) {
        furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(APB1, value, 2));
        FURI_HAL_BUS_PERIPH_DISABLE(APB1, value, 2);
    } else if(bus < FuriHalBusAPB3_GRP1) {
        furi_check(FURI_HAL_BUS_IS_PERIPH_ENABLED(APB2, value));
        FURI_HAL_BUS_PERIPH_DISABLE(APB2, value, 1);
    } else {
        furi_check(FURI_HAL_BUS_IS_RESET_DEASSERTED(APB3, value));
        FURI_HAL_BUS_RESET_ASSERT(APB3, FURI_HAL_BUS_APB3_GRP1, 1);
    }
    FURI_CRITICAL_EXIT();
}

bool furi_hal_bus_is_enabled(FuriHalBus bus) {
    furi_check(bus < FuriHalBusMAX);
    const uint32_t value = furi_hal_bus[bus];
    if(value == FURI_HAL_BUS_IGNORE) {
        return true;
    }

    bool ret = false;
    FURI_CRITICAL_ENTER();
    if(bus < FuriHalBusAHB2_GRP1) {
        ret = FURI_HAL_BUS_IS_PERIPH_ENABLED(AHB1, value);
    } else if(bus < FuriHalBusAHB3_GRP1) {
        ret = FURI_HAL_BUS_IS_PERIPH_ENABLED(AHB2, value);
    } else if(bus < FuriHalBusAPB1_GRP1) {
        ret = FURI_HAL_BUS_IS_PERIPH_ENABLED(AHB3, value);
    } else if(bus < FuriHalBusAPB1_GRP2) {
        ret = FURI_HAL_BUS_IS_PERIPH_ENABLED(APB1, value, 1);
    } else if(bus < FuriHalBusAPB2_GRP1) {
        ret = FURI_HAL_BUS_IS_PERIPH_ENABLED(APB1, value, 2);
    } else if(bus < FuriHalBusAPB3_GRP1) {
        ret = FURI_HAL_BUS_IS_PERIPH_ENABLED(APB2, value);
    } else {
        ret = FURI_HAL_BUS_IS_RESET_DEASSERTED(APB3, value);
    }
    FURI_CRITICAL_EXIT();

    return ret;
}