LCOV - code coverage report
Current view: top level - zephyr/dt-bindings/clock - stm32f0_clock.h Hit Total Coverage
Test: new.info Lines: 10 32 31.2 %
Date: 2024-12-22 00:14:23

          Line data    Source code
       1           0 : /*
       2             :  * Copyright (c) 2022 Linaro Limited
       3             :  *
       4             :  * SPDX-License-Identifier: Apache-2.0
       5             :  */
       6             : #ifndef ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32F0_CLOCK_H_
       7             : #define ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32F0_CLOCK_H_
       8             : 
       9             : #include "stm32_common_clocks.h"
      10             : 
      11             : /** Bus gatting clocks */
      12           1 : #define STM32_CLOCK_BUS_AHB1    0x014
      13           0 : #define STM32_CLOCK_BUS_APB2    0x018
      14           0 : #define STM32_CLOCK_BUS_APB1    0x01c
      15             : 
      16           0 : #define STM32_PERIPH_BUS_MIN    STM32_CLOCK_BUS_AHB1
      17           0 : #define STM32_PERIPH_BUS_MAX    STM32_CLOCK_BUS_APB1
      18             : 
      19             : /** Domain clocks */
      20             : 
      21             : /** System clock */
      22             : /* defined in stm32_common_clocks.h */
      23             : /** Fixed clocks  */
      24             : /* Low speed clocks defined in stm32_common_clocks.h */
      25           1 : #define STM32_SRC_HSI           (STM32_SRC_LSI + 1)
      26           0 : #define STM32_SRC_HSI14         (STM32_SRC_HSI + 1)
      27           0 : #define STM32_SRC_HSI48         (STM32_SRC_HSI14 + 1)
      28             : /** Bus clock */
      29           1 : #define STM32_SRC_PCLK          (STM32_SRC_HSI48 + 1)
      30             : /** PLL clock */
      31           1 : #define STM32_SRC_PLLCLK        (STM32_SRC_PCLK + 1)
      32             : 
      33           0 : #define STM32_CLOCK_REG_MASK    0xFFU
      34           0 : #define STM32_CLOCK_REG_SHIFT   0U
      35           0 : #define STM32_CLOCK_SHIFT_MASK  0x1FU
      36           0 : #define STM32_CLOCK_SHIFT_SHIFT 8U
      37           0 : #define STM32_CLOCK_MASK_MASK   0x7U
      38           0 : #define STM32_CLOCK_MASK_SHIFT  13U
      39           0 : #define STM32_CLOCK_VAL_MASK    0x7U
      40           0 : #define STM32_CLOCK_VAL_SHIFT   16U
      41             : 
      42             : /**
      43             :  * @brief STM32 clock configuration bit field.
      44             :  *
      45             :  * - reg   (1/2/3)         [ 0 : 7 ]
      46             :  * - shift (0..31)         [ 8 : 12 ]
      47             :  * - mask  (0x1, 0x3, 0x7) [ 13 : 15 ]
      48             :  * - val   (0..7)          [ 16 : 18 ]
      49             :  *
      50             :  * @param reg RCC_CFGRx register offset
      51             :  * @param shift Position within RCC_CFGRx.
      52             :  * @param mask Mask for the RCC_CFGRx field.
      53             :  * @param val Clock value (0, 1, ... 7).
      54             :  */
      55           1 : #define STM32_DOMAIN_CLOCK(val, mask, shift, reg)                                       \
      56             :         ((((reg) & STM32_CLOCK_REG_MASK) << STM32_CLOCK_REG_SHIFT) |          \
      57             :          (((shift) & STM32_CLOCK_SHIFT_MASK) << STM32_CLOCK_SHIFT_SHIFT) |    \
      58             :          (((mask) & STM32_CLOCK_MASK_MASK) << STM32_CLOCK_MASK_SHIFT) |               \
      59             :          (((val) & STM32_CLOCK_VAL_MASK) << STM32_CLOCK_VAL_SHIFT))
      60             : 
      61             : /** @brief RCC_CFGRx register offset */
      62           1 : #define CFGR1_REG               0x04
      63           0 : #define CFGR3_REG               0x30
      64             : 
      65             : /** @brief RCC_BDCR register offset */
      66           1 : #define BDCR_REG                0x20
      67             : 
      68             : /** @brief Device domain clocks selection helpers */
      69             : /** CFGR3 devices */
      70           1 : #define USART1_SEL(val)         STM32_DOMAIN_CLOCK(val, 3, 0, CFGR3_REG)
      71           0 : #define I2C1_SEL(val)           STM32_DOMAIN_CLOCK(val, 1, 4, CFGR3_REG)
      72           0 : #define CEC_SEL(val)            STM32_DOMAIN_CLOCK(val, 1, 6, CFGR3_REG)
      73           0 : #define USB_SEL(val)            STM32_DOMAIN_CLOCK(val, 1, 7, CFGR3_REG)
      74           0 : #define USART2_SEL(val)         STM32_DOMAIN_CLOCK(val, 3, 16, CFGR3_REG)
      75           0 : #define USART3_SEL(val)         STM32_DOMAIN_CLOCK(val, 3, 18, CFGR3_REG)
      76             : /** BDCR devices */
      77           1 : #define RTC_SEL(val)            STM32_DOMAIN_CLOCK(val, 3, 8, BDCR_REG)
      78             : 
      79             : /** CFGR1 devices */
      80           1 : #define MCO1_SEL(val)           STM32_MCO_CFGR(val, 0xF, 24, CFGR1_REG)
      81           0 : #define MCO1_PRE(val)           STM32_MCO_CFGR(val, 0x7, 28, CFGR1_REG)
      82             : 
      83             : #endif /* ZEPHYR_INCLUDE_DT_BINDINGS_CLOCK_STM32F0_CLOCK_H_ */

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