1 /* 2 * Copyright (c) 2019 Song Qiang <songqiang1304521@gmail.com> 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef DMA_STM32_H_ 8 #define DMA_STM32_H_ 9 10 #include <soc.h> 11 #include <stm32_ll_dma.h> 12 #include <zephyr/drivers/dma.h> 13 #include <zephyr/drivers/clock_control/stm32_clock_control.h> 14 15 /* Maximum data sent in single transfer (Bytes) */ 16 #define DMA_STM32_MAX_DATA_ITEMS 0xffff 17 18 struct dma_stm32_stream { 19 uint32_t direction; 20 #ifdef CONFIG_DMAMUX_STM32 21 int mux_channel; /* stores the dmamux channel */ 22 #endif /* CONFIG_DMAMUX_STM32 */ 23 bool source_periph; 24 bool hal_override; 25 volatile bool busy; 26 uint32_t src_size; 27 uint32_t dst_size; 28 void *user_data; /* holds the client data */ 29 dma_callback_t dma_callback; 30 }; 31 32 struct dma_stm32_data { 33 struct dma_context dma_ctx; 34 }; 35 36 struct dma_stm32_config { 37 struct stm32_pclken pclken; 38 void (*config_irq)(const struct device *dev); 39 bool support_m2m; 40 uint32_t base; 41 uint32_t max_streams; 42 #ifdef CONFIG_DMAMUX_STM32 43 uint8_t offset; /* position in the list of dmamux channel list */ 44 #endif 45 struct dma_stm32_stream *streams; 46 }; 47 48 uint32_t dma_stm32_id_to_stream(uint32_t id); 49 #if !defined(CONFIG_DMAMUX_STM32) 50 uint32_t dma_stm32_slot_to_channel(uint32_t id); 51 #endif 52 53 typedef void (*dma_stm32_clear_flag_func)(DMA_TypeDef *DMAx); 54 typedef uint32_t (*dma_stm32_check_flag_func)(DMA_TypeDef *DMAx); 55 56 bool dma_stm32_is_tc_active(DMA_TypeDef *DMAx, uint32_t id); 57 void dma_stm32_clear_tc(DMA_TypeDef *DMAx, uint32_t id); 58 bool dma_stm32_is_ht_active(DMA_TypeDef *DMAx, uint32_t id); 59 void dma_stm32_clear_ht(DMA_TypeDef *DMAx, uint32_t id); 60 bool dma_stm32_is_te_active(DMA_TypeDef *DMAx, uint32_t id); 61 void dma_stm32_clear_te(DMA_TypeDef *DMAx, uint32_t id); 62 63 #ifdef CONFIG_DMA_STM32_V1 64 bool dma_stm32_is_dme_active(DMA_TypeDef *DMAx, uint32_t id); 65 void dma_stm32_clear_dme(DMA_TypeDef *DMAx, uint32_t id); 66 bool dma_stm32_is_fe_active(DMA_TypeDef *DMAx, uint32_t id); 67 void dma_stm32_clear_fe(DMA_TypeDef *DMAx, uint32_t id); 68 #endif 69 70 #ifdef CONFIG_DMA_STM32_V2 71 bool dma_stm32_is_gi_active(DMA_TypeDef *DMAx, uint32_t id); 72 void dma_stm32_clear_gi(DMA_TypeDef *DMAx, uint32_t id); 73 #endif 74 75 bool stm32_dma_is_irq_active(DMA_TypeDef *dma, uint32_t id); 76 bool stm32_dma_is_ht_irq_active(DMA_TypeDef *dma, uint32_t id); 77 bool stm32_dma_is_tc_irq_active(DMA_TypeDef *dma, uint32_t id); 78 79 void stm32_dma_dump_stream_irq(DMA_TypeDef *dma, uint32_t id); 80 void stm32_dma_clear_stream_irq(DMA_TypeDef *dma, uint32_t id); 81 bool stm32_dma_is_irq_happened(DMA_TypeDef *dma, uint32_t id); 82 bool stm32_dma_is_unexpected_irq_happened(DMA_TypeDef *dma, uint32_t id); 83 void stm32_dma_enable_stream(DMA_TypeDef *dma, uint32_t id); 84 bool stm32_dma_is_enabled_stream(DMA_TypeDef *dma, uint32_t id); 85 int stm32_dma_disable_stream(DMA_TypeDef *dma, uint32_t id); 86 87 #if !defined(CONFIG_DMAMUX_STM32) 88 void stm32_dma_config_channel_function(DMA_TypeDef *dma, uint32_t id, 89 uint32_t slot); 90 #endif 91 92 #ifdef CONFIG_DMA_STM32_V1 93 void stm32_dma_disable_fifo_irq(DMA_TypeDef *dma, uint32_t id); 94 bool stm32_dma_check_fifo_mburst(LL_DMA_InitTypeDef *DMAx); 95 uint32_t stm32_dma_get_fifo_threshold(uint16_t fifo_mode_control); 96 uint32_t stm32_dma_get_mburst(struct dma_config *config, bool source_periph); 97 uint32_t stm32_dma_get_pburst(struct dma_config *config, bool source_periph); 98 #endif 99 100 #ifdef CONFIG_DMAMUX_STM32 101 /* dma_stm32_ api functions are exported to the dmamux_stm32 */ 102 #define DMA_STM32_EXPORT_API 103 int dma_stm32_configure(const struct device *dev, uint32_t id, 104 struct dma_config *config); 105 int dma_stm32_reload(const struct device *dev, uint32_t id, 106 uint32_t src, uint32_t dst, size_t size); 107 int dma_stm32_start(const struct device *dev, uint32_t id); 108 int dma_stm32_stop(const struct device *dev, uint32_t id); 109 int dma_stm32_get_status(const struct device *dev, uint32_t id, 110 struct dma_status *stat); 111 #else 112 #define DMA_STM32_EXPORT_API static 113 #endif /* CONFIG_DMAMUX_STM32 */ 114 115 #endif /* DMA_STM32_H_*/ 116
