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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179/* 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 1
/* * 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 2#define ACP_SDW0 0#define ACP_SDW1 1#define AMD_SDW_MAX_MANAGER_COUNT 2#define ACP63_PCI_REV_ID 0x63#define ACP70_PCI_REV_ID 0x70#define ACP71_PCI_REV_ID 0x71#define ACP72_PCI_REV_ID 0x72
struct acp_sdw_pdata { u16 instance; u32 acp_rev; /* mutex to protect acp common register access */ struct mutex *acp_sdw_lock;};
/** * 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 { char *name; struct sdw_stream_runtime *stream; struct sdw_bus *bus; enum sdw_stream_type stream_type;};
/** * 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 * @max_ports: total number of input ports and output ports * @cols_index: Column index in frame shape * @rows_index: Rows index in frame shape * @port_offset_map: dynamic array to map port block offset * @instance: SoundWire manager instance * @quirks: SoundWire manager quirks * @wake_en_mask: wake enable mask per SoundWire manager * @acp_rev: acp pci device revision id * @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_bus bus; struct device *dev;
void __iomem *mmio; void __iomem *acp_mmio;
struct work_struct amd_sdw_irq_thread; struct work_struct amd_sdw_work; /* mutex to protect acp common register access */ struct mutex *acp_sdw_lock;
enum sdw_slave_status status[SDW_MAX_DEVICES + 1];
int num_din_ports; int num_dout_ports; int max_ports;
int cols_index; int rows_index;
int *port_offset_map; u32 instance; u32 quirks; u32 wake_en_mask; u32 power_mode_mask; u32 acp_rev; bool clk_stopped;
struct sdw_amd_dai_runtime **dai_runtime_array;};
/** * 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 { acpi_handle handle; int count; u32 link_mask;};
/** * struct sdw_amd_ctx - context allocated by the controller driver probe * * @count: link count * @link_mask: bit-wise mask listing SoundWire links reported by the * Controller * @pdev: platform device structure * @peripherals: array representing Peripherals exposed across all enabled links */struct sdw_amd_ctx { int count; u32 link_mask; struct platform_device *pdev[AMD_SDW_MAX_MANAGER_COUNT]; struct sdw_peripherals *peripherals;};
/** * struct sdw_amd_res - Soundwire AMD global resource structure, * typically populated by the DSP driver/Legacy driver * * @acp_rev: acp pci device revision id * @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 { u32 acp_rev; u32 addr; u32 reg_range; u32 link_mask; int count; void __iomem *mmio_base; acpi_handle handle; struct device *parent; struct device *dev; /* use to protect acp common registers access */ struct mutex *acp_lock;};
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