/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ /* * Copyright (C) 2023-24 Advanced Micro Devices, Inc. All rights reserved. */ #ifndef __SDW_AMD_H #define __SDW_AMD_H #include <linux/acpi.h> #include <linux/soundwire/sdw.h> /* AMD pm_runtime quirk definitions */ /* * Force the clock to stop(ClockStopMode0) when suspend callback * is invoked. */ #define AMD_SDW_CLK_STOP_MODE … /* * Stop the bus when runtime suspend/system level suspend callback * is invoked. If set, a complete bus reset and re-enumeration will * be performed when the bus restarts. In-band wake interrupts are * not supported in this mode. */ #define AMD_SDW_POWER_OFF_MODE … #define ACP_SDW0 … #define ACP_SDW1 … #define AMD_SDW_MAX_MANAGER_COUNT … struct acp_sdw_pdata { … }; /** * struct sdw_amd_dai_runtime: AMD sdw dai runtime data * * @name: SoundWire stream name * @stream: stream runtime * @bus: Bus handle * @stream_type: Stream type */ struct sdw_amd_dai_runtime { … }; /** * struct amd_sdw_manager - amd manager driver context * @bus: bus handle * @dev: linux device * @mmio: SoundWire registers mmio base * @acp_mmio: acp registers mmio base * @amd_sdw_irq_thread: SoundWire manager irq workqueue * @amd_sdw_work: peripheral status work queue * @acp_sdw_lock: mutex to protect acp share register access * @status: peripheral devices status array * @num_din_ports: number of input ports * @num_dout_ports: number of output ports * @cols_index: Column index in frame shape * @rows_index: Rows index in frame shape * @instance: SoundWire manager instance * @quirks: SoundWire manager quirks * @wake_en_mask: wake enable mask per SoundWire manager * @clk_stopped: flag set to true when clock is stopped * @power_mode_mask: flag interprets amd SoundWire manager power mode * @dai_runtime_array: dai runtime array */ struct amd_sdw_manager { … }; /** * struct sdw_amd_acpi_info - Soundwire AMD information found in ACPI tables * @handle: ACPI controller handle * @count: maximum no of soundwire manager links supported on AMD platform. * @link_mask: bit-wise mask listing links enabled by BIOS menu */ struct sdw_amd_acpi_info { … }; /** * struct sdw_amd_ctx - context allocated by the controller driver probe * * @count: link count * @num_slaves: total number of devices exposed across all enabled links * @link_mask: bit-wise mask listing SoundWire links reported by the * Controller * @ids: array of slave_id, representing Slaves exposed across all enabled * links * @pdev: platform device structure */ struct sdw_amd_ctx { … }; /** * struct sdw_amd_res - Soundwire AMD global resource structure, * typically populated by the DSP driver/Legacy driver * * @addr: acp pci device resource start address * @reg_range: ACP register range * @link_mask: bit-wise mask listing links selected by the DSP driver/ * legacy driver * @count: link count * @mmio_base: mmio base of SoundWire registers * @handle: ACPI parent handle * @parent: parent device * @dev: device implementing hwparams and free callbacks * @acp_lock: mutex protecting acp common registers access */ struct sdw_amd_res { … }; int sdw_amd_probe(struct sdw_amd_res *res, struct sdw_amd_ctx **ctx); void sdw_amd_exit(struct sdw_amd_ctx *ctx); int sdw_amd_get_slave_info(struct sdw_amd_ctx *ctx); int amd_sdw_scan_controller(struct sdw_amd_acpi_info *info); #endif
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