diff options
Diffstat (limited to 'include/sound/sdca_fdl.h')
| -rw-r--r-- | include/sound/sdca_fdl.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/sound/sdca_fdl.h b/include/sound/sdca_fdl.h new file mode 100644 index 000000000000..fbaf4b384c8a --- /dev/null +++ b/include/sound/sdca_fdl.h @@ -0,0 +1,105 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * The MIPI SDCA specification is available for public downloads at + * https://www.mipi.org/mipi-sdca-v1-0-download + * + * Copyright (C) 2025 Cirrus Logic, Inc. and + * Cirrus Logic International Semiconductor Ltd. + */ + +#ifndef __SDCA_FDL_H__ +#define __SDCA_FDL_H__ + +#include <linux/completion.h> +#include <linux/workqueue.h> + +struct device; +struct regmap; +struct sdca_fdl_set; +struct sdca_function_data; +struct sdca_interrupt; +struct sdca_interrupt_info; + +/** + * struct fdl_state - FDL state structure to keep data between interrupts + * @begin: Completion indicating the start of an FDL download cycle. + * @done: Completion indicating the end of an FDL download cycle. + * @timeout: Delayed work used for timing out UMP transactions. + * @lock: Mutex to protect between the timeout work and IRQ handlers. + * @interrupt: Pointer to the interrupt struct to which this FDL is attached. + * @set: Pointer to the FDL set currently being downloaded. + * @file_index: Index of the current file being processed. + */ +struct fdl_state { + struct completion begin; + struct completion done; + struct delayed_work timeout; + struct mutex lock; + + struct sdca_interrupt *interrupt; + struct sdca_fdl_set *set; + int file_index; +}; + +#define SDCA_CTL_XU_FDLH_COMPLETE 0 +#define SDCA_CTL_XU_FDLH_MORE_FILES SDCA_CTL_XU_FDLH_SET_IN_PROGRESS +#define SDCA_CTL_XU_FDLH_FILE_AVAILABLE (SDCA_CTL_XU_FDLH_TRANSFERRED_FILE | \ + SDCA_CTL_XU_FDLH_SET_IN_PROGRESS) +#define SDCA_CTL_XU_FDLH_MASK (SDCA_CTL_XU_FDLH_TRANSFERRED_CHUNK | \ + SDCA_CTL_XU_FDLH_TRANSFERRED_FILE | \ + SDCA_CTL_XU_FDLH_SET_IN_PROGRESS | \ + SDCA_CTL_XU_FDLH_RESET_ACK | \ + SDCA_CTL_XU_FDLH_REQ_ABORT) + +#define SDCA_CTL_XU_FDLD_COMPLETE 0 +#define SDCA_CTL_XU_FDLD_FILE_OK (SDCA_CTL_XU_FDLH_TRANSFERRED_FILE | \ + SDCA_CTL_XU_FDLH_SET_IN_PROGRESS | \ + SDCA_CTL_XU_FDLD_ACK_TRANSFER | \ + SDCA_CTL_XU_FDLD_NEEDS_SET) +#define SDCA_CTL_XU_FDLD_MORE_FILES_OK (SDCA_CTL_XU_FDLH_SET_IN_PROGRESS | \ + SDCA_CTL_XU_FDLD_ACK_TRANSFER | \ + SDCA_CTL_XU_FDLD_NEEDS_SET) +#define SDCA_CTL_XU_FDLD_MASK (SDCA_CTL_XU_FDLD_REQ_RESET | \ + SDCA_CTL_XU_FDLD_REQ_ABORT | \ + SDCA_CTL_XU_FDLD_ACK_TRANSFER | \ + SDCA_CTL_XU_FDLD_NEEDS_SET) + +#if IS_ENABLED(CONFIG_SND_SOC_SDCA_FDL) + +int sdca_fdl_alloc_state(struct sdca_interrupt *interrupt); +int sdca_fdl_process(struct sdca_interrupt *interrupt); +int sdca_fdl_sync(struct device *dev, struct sdca_function_data *function, + struct sdca_interrupt_info *info); + +int sdca_reset_function(struct device *dev, struct sdca_function_data *function, + struct regmap *regmap); + +#else + +static inline int sdca_fdl_alloc_state(struct sdca_interrupt *interrupt) +{ + return 0; +} + +static inline int sdca_fdl_process(struct sdca_interrupt *interrupt) +{ + return 0; +} + +static inline int sdca_fdl_sync(struct device *dev, + struct sdca_function_data *function, + struct sdca_interrupt_info *info) +{ + return 0; +} + +static inline int sdca_reset_function(struct device *dev, + struct sdca_function_data *function, + struct regmap *regmap) +{ + return 0; +} + +#endif // CONFIG_SND_SOC_SDCA_FDL + +#endif // __SDCA_FDL_H__ |