1 /* 2 * Copyright (c) 2023 Jeroen van Dooren, Nobleo Technology 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 */ 6 7 #ifndef BDMA_STM32_H_ 8 #define BDMA_STM32_H_ 9 10 #include <soc.h> 11 #include <stm32_ll_bdma.h> 12 #include <zephyr/drivers/dma.h> 13 #include <zephyr/drivers/clock_control/stm32_clock_control.h> 14 #include <zephyr/drivers/dma/dma_stm32.h> 15 16 /* Maximum data sent in single transfer (Bytes) */ 17 #define BDMA_STM32_MAX_DATA_ITEMS 0xffff 18 19 struct bdma_stm32_channel { 20 uint32_t direction; 21 #ifdef CONFIG_DMAMUX_STM32 22 int mux_channel; /* stores the dmamux channel */ 23 #endif /* CONFIG_DMAMUX_STM32 */ 24 bool source_periph; 25 bool hal_override; 26 volatile bool busy; 27 uint32_t src_size; 28 uint32_t dst_size; 29 void *user_data; /* holds the client data */ 30 dma_callback_t bdma_callback; 31 bool cyclic; 32 }; 33 34 struct bdma_stm32_data { 35 struct dma_context dma_ctx; 36 }; 37 38 struct bdma_stm32_config { 39 struct stm32_pclken pclken; 40 void (*config_irq)(const struct device *dev); 41 bool support_m2m; 42 uint32_t base; 43 uint32_t max_channels; 44 #ifdef CONFIG_DMAMUX_STM32 45 uint8_t offset; /* position in the list of bdmamux channel list */ 46 #endif 47 struct bdma_stm32_channel *channels; 48 }; 49 50 uint32_t bdma_stm32_id_to_channel(uint32_t id); 51 #if !defined(CONFIG_DMAMUX_STM32) 52 uint32_t bdma_stm32_slot_to_channel(uint32_t id); 53 #endif 54 55 typedef void (*bdma_stm32_clear_flag_func)(BDMA_TypeDef *DMAx); 56 typedef uint32_t (*bdma_stm32_check_flag_func)(const BDMA_TypeDef *DMAx); 57 58 bool bdma_stm32_is_gi_active(BDMA_TypeDef *DMAx, uint32_t id); 59 void bdma_stm32_clear_gi(BDMA_TypeDef *DMAx, uint32_t id); 60 61 void bdma_stm32_clear_tc(BDMA_TypeDef *DMAx, uint32_t id); 62 void bdma_stm32_clear_ht(BDMA_TypeDef *DMAx, uint32_t id); 63 bool bdma_stm32_is_te_active(BDMA_TypeDef *DMAx, uint32_t id); 64 void bdma_stm32_clear_te(BDMA_TypeDef *DMAx, uint32_t id); 65 66 bool stm32_bdma_is_irq_active(BDMA_TypeDef *dma, uint32_t id); 67 bool stm32_bdma_is_ht_irq_active(BDMA_TypeDef *ma, uint32_t id); 68 bool stm32_bdma_is_tc_irq_active(BDMA_TypeDef *ma, uint32_t id); 69 70 void stm32_bdma_dump_channel_irq(BDMA_TypeDef *dma, uint32_t id); 71 void stm32_bdma_clear_channel_irq(BDMA_TypeDef *dma, uint32_t id); 72 bool stm32_bdma_is_irq_happened(BDMA_TypeDef *dma, uint32_t id); 73 void stm32_bdma_enable_channel(BDMA_TypeDef *dma, uint32_t id); 74 int stm32_bdma_disable_channel(BDMA_TypeDef *dma, uint32_t id); 75 76 #if !defined(CONFIG_DMAMUX_STM32) 77 void stm32_dma_config_channel_function(BDMA_TypeDef *dma, uint32_t id, 78 uint32_t slot); 79 #endif 80 81 #ifdef CONFIG_DMAMUX_STM32 82 /* bdma_stm32_ api functions are exported to the bdmamux_stm32 */ 83 #define BDMA_STM32_EXPORT_API 84 int bdma_stm32_configure(const struct device *dev, uint32_t id, 85 struct dma_config *config); 86 int bdma_stm32_reload(const struct device *dev, uint32_t id, 87 uint32_t src, uint32_t dst, size_t size); 88 int bdma_stm32_start(const struct device *dev, uint32_t id); 89 int bdma_stm32_stop(const struct device *dev, uint32_t id); 90 int bdma_stm32_get_status(const struct device *dev, uint32_t id, 91 struct dma_status *stat); 92 #else 93 #define BDMA_STM32_EXPORT_API static 94 #endif /* CONFIG_DMAMUX_STM32 */ 95 96 #endif /* BDMA_STM32_H_*/ 97
