1 /**
2   ******************************************************************************
3   * @file    stm32l5xx_ll_ucpd.c
4   * @author  MCD Application Team
5   * @brief   UCPD LL module driver.
6   ******************************************************************************
7   * @attention
8   *
9   * Copyright (c) 2019 STMicroelectronics.
10   * All rights reserved.
11   *
12   * This software is licensed under terms that can be found in the LICENSE file
13   * in the root directory of this software component.
14   * If no LICENSE file comes with this software, it is provided AS-IS.
15   *
16   ******************************************************************************
17   */
18 #if defined(USE_FULL_LL_DRIVER)
19 
20 /* Includes ------------------------------------------------------------------*/
21 #include "stm32l5xx_ll_ucpd.h"
22 #include "stm32l5xx_ll_bus.h"
23 #include "stm32l5xx_ll_rcc.h"
24 
25 #ifdef  USE_FULL_ASSERT
26 #include "stm32_assert.h"
27 #else
28 #define assert_param(expr) ((void)0U)
29 #endif /* USE_FULL_ASSERT */
30 
31 /** @addtogroup STM32L5xx_LL_Driver
32   * @{
33   */
34 #if defined (UCPD1)
35 /** @addtogroup UCPD_LL
36   * @{
37   */
38 
39 /* Private types -------------------------------------------------------------*/
40 /* Private variables ---------------------------------------------------------*/
41 
42 /* Private constants ---------------------------------------------------------*/
43 /** @defgroup UCPD_LL_Private_Constants UCPD Private Constants
44   * @{
45   */
46 
47 /**
48   * @}
49   */
50 
51 /* Private macros ------------------------------------------------------------*/
52 /** @defgroup UCPD_LL_Private_Macros UCPD Private Macros
53   * @{
54   */
55 
56 
57 /**
58   * @}
59   */
60 
61 /* Private function prototypes -----------------------------------------------*/
62 
63 /* Exported functions --------------------------------------------------------*/
64 /** @addtogroup UCPD_LL_Exported_Functions
65   * @{
66   */
67 
68 /** @addtogroup UCPD_LL_EF_Init
69   * @{
70   */
71 
72 /**
73   * @brief  De-initialize the UCPD registers to their default reset values.
74   * @param  UCPDx ucpd Instance
75   * @retval An ErrorStatus enumeration value:
76   *          - SUCCESS: ucpd registers are de-initialized
77   *          - ERROR: ucpd registers are not de-initialized
78   */
LL_UCPD_DeInit(UCPD_TypeDef * UCPDx)79 ErrorStatus LL_UCPD_DeInit(UCPD_TypeDef *UCPDx)
80 {
81   ErrorStatus status = ERROR;
82 
83   /* Check the parameters */
84   assert_param(IS_UCPD_ALL_INSTANCE(UCPDx));
85 
86   LL_UCPD_Disable(UCPDx);
87 
88   if (UCPD1 == UCPDx)
89   {
90     /* Force reset of ucpd clock */
91     LL_APB1_GRP2_ForceReset(LL_APB1_GRP2_PERIPH_UCPD1);
92 
93     /* Release reset of ucpd clock */
94     LL_APB1_GRP2_ReleaseReset(LL_APB1_GRP2_PERIPH_UCPD1);
95 
96     /* Disable ucpd clock */
97     LL_APB1_GRP2_DisableClock(LL_APB1_GRP2_PERIPH_UCPD1);
98 
99     status = SUCCESS;
100   }
101 
102   return status;
103 }
104 
105 /**
106   * @brief  Initialize the ucpd registers according to the specified parameters in UCPD_InitStruct.
107   * @note   As some bits in ucpd configuration registers can only be written when the ucpd is disabled
108   *         (ucpd_CR1_SPE bit =0), UCPD peripheral should be in disabled state prior calling this function.
109   *         Otherwise, ERROR result will be returned.
110   * @param  UCPDx UCPD Instance
111   * @param  UCPD_InitStruct pointer to a @ref LL_UCPD_InitTypeDef structure that contains
112   *         the configuration information for the UCPD peripheral.
113   * @retval An ErrorStatus enumeration value. (Return always SUCCESS)
114   */
LL_UCPD_Init(UCPD_TypeDef * UCPDx,LL_UCPD_InitTypeDef * UCPD_InitStruct)115 ErrorStatus LL_UCPD_Init(UCPD_TypeDef *UCPDx, LL_UCPD_InitTypeDef *UCPD_InitStruct)
116 {
117   /* Check the ucpd Instance UCPDx*/
118   assert_param(IS_UCPD_ALL_INSTANCE(UCPDx));
119 
120   if (UCPD1 == UCPDx)
121   {
122     LL_APB1_GRP2_EnableClock(LL_APB1_GRP2_PERIPH_UCPD1);
123   }
124 
125 
126   LL_UCPD_Disable(UCPDx);
127 
128   /*---------------------------- UCPDx CFG1 Configuration ------------------------*/
129   MODIFY_REG(UCPDx->CFG1,
130              UCPD_CFG1_PSC_UCPDCLK | UCPD_CFG1_TRANSWIN | UCPD_CFG1_IFRGAP | UCPD_CFG1_HBITCLKDIV,
131              UCPD_InitStruct->psc_ucpdclk | (UCPD_InitStruct->transwin  << UCPD_CFG1_TRANSWIN_Pos) |
132              (UCPD_InitStruct->IfrGap << UCPD_CFG1_IFRGAP_Pos) | UCPD_InitStruct->HbitClockDiv);
133 
134   return SUCCESS;
135 }
136 
137 /**
138   * @brief  Set each @ref LL_UCPD_InitTypeDef field to default value.
139   * @param  UCPD_InitStruct pointer to a @ref LL_UCPD_InitTypeDef structure
140   *         whose fields will be set to default values.
141   * @retval None
142   */
LL_UCPD_StructInit(LL_UCPD_InitTypeDef * UCPD_InitStruct)143 void LL_UCPD_StructInit(LL_UCPD_InitTypeDef *UCPD_InitStruct)
144 {
145   /* Set UCPD_InitStruct fields to default values */
146   UCPD_InitStruct->psc_ucpdclk  = LL_UCPD_PSC_DIV2;
147   UCPD_InitStruct->transwin     = 0x7;   /* Divide by 8                     */
148   UCPD_InitStruct->IfrGap       = 0x10;  /* Divide by 17                    */
149   UCPD_InitStruct->HbitClockDiv = 0x0D;  /* Divide by 14 to produce HBITCLK */
150 }
151 
152 /**
153   * @}
154   */
155 
156 /**
157   * @}
158   */
159 
160 /**
161   * @}
162   */
163 #endif /* defined (UCPD1) */
164 /**
165   * @}
166   */
167 
168 #endif /* USE_FULL_LL_DRIVER */
169 
170