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665dd181a9
SoundWire DMA platform driver binds to the platform device created by ACP PCI device. SoundWire DMA driver registers ALSA DMA component with ASoC framework. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Link: https://lore.kernel.org/r/20230612095903.2113464-4-Vijendar.Mukunda@amd.com Signed-off-by: Mark Brown <broonie@kernel.org>
179 lines
4.8 KiB
C
179 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* AMD ALSA SoC PDM Driver
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*
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* Copyright (C) 2022, 2023 Advanced Micro Devices, Inc. All rights reserved.
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*/
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#include <sound/acp63_chip_offset_byte.h>
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#define ACP_DEVICE_ID 0x15E2
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#define ACP63_REG_START 0x1240000
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#define ACP63_REG_END 0x1250200
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#define ACP63_DEVS 5
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#define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK 0x00010001
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#define ACP_PGFSM_CNTL_POWER_ON_MASK 1
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#define ACP_PGFSM_CNTL_POWER_OFF_MASK 0
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#define ACP_PGFSM_STATUS_MASK 3
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#define ACP_POWERED_ON 0
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#define ACP_POWER_ON_IN_PROGRESS 1
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#define ACP_POWERED_OFF 2
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#define ACP_POWER_OFF_IN_PROGRESS 3
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#define ACP_ERROR_MASK 0x20000000
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#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
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#define PDM_DMA_STAT 0x10
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#define PDM_DMA_INTR_MASK 0x10000
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#define ACP_ERROR_STAT 29
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#define PDM_DECIMATION_FACTOR 2
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#define ACP_PDM_CLK_FREQ_MASK 7
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#define ACP_WOV_GAIN_CONTROL GENMASK(4, 3)
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#define ACP_PDM_ENABLE 1
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#define ACP_PDM_DISABLE 0
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#define ACP_PDM_DMA_EN_STATUS 2
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#define TWO_CH 2
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#define DELAY_US 5
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#define ACP_COUNTER 20000
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#define ACP_SRAM_PTE_OFFSET 0x03800000
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#define PAGE_SIZE_4K_ENABLE 2
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#define PDM_PTE_OFFSET 0
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#define PDM_MEM_WINDOW_START 0x4000000
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#define CAPTURE_MIN_NUM_PERIODS 4
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#define CAPTURE_MAX_NUM_PERIODS 4
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#define CAPTURE_MAX_PERIOD_SIZE 8192
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#define CAPTURE_MIN_PERIOD_SIZE 4096
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#define MAX_BUFFER (CAPTURE_MAX_PERIOD_SIZE * CAPTURE_MAX_NUM_PERIODS)
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#define MIN_BUFFER MAX_BUFFER
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/* time in ms for runtime suspend delay */
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#define ACP_SUSPEND_DELAY_MS 2000
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#define ACP_DMIC_DEV 2
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/* ACP63_PDM_MODE_DEVS corresponds to platform devices count for ACP PDM configuration */
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#define ACP63_PDM_MODE_DEVS 3
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/*
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* ACP63_SDW0_MODE_DEVS corresponds to platform devices count for
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* SW0 SoundWire manager instance configuration
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*/
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#define ACP63_SDW0_MODE_DEVS 2
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/*
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* ACP63_SDW0_SDW1_MODE_DEVS corresponds to platform devices count for SW0 + SW1 SoundWire manager
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* instances configuration
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*/
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#define ACP63_SDW0_SDW1_MODE_DEVS 3
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/*
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* ACP63_SDW0_PDM_MODE_DEVS corresponds to platform devices count for SW0 manager
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* instance + ACP PDM controller configuration
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*/
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#define ACP63_SDW0_PDM_MODE_DEVS 4
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/*
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* ACP63_SDW0_SDW1_PDM_MODE_DEVS corresponds to platform devices count for
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* SW0 + SW1 SoundWire manager instances + ACP PDM controller configuration
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*/
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#define ACP63_SDW0_SDW1_PDM_MODE_DEVS 5
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#define ACP63_DMIC_ADDR 2
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#define ACP63_SDW_ADDR 5
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#define AMD_SDW_MAX_MANAGERS 2
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/* time in ms for acp timeout */
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#define ACP_TIMEOUT 500
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/* ACP63_PDM_DEV_CONFIG corresponds to platform device configuration for ACP PDM controller */
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#define ACP63_PDM_DEV_CONFIG BIT(0)
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/* ACP63_SDW_DEV_CONFIG corresponds to platform device configuration for SDW manager instances */
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#define ACP63_SDW_DEV_CONFIG BIT(1)
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/*
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* ACP63_SDW_PDM_DEV_CONFIG corresponds to platform device configuration for ACP PDM + SoundWire
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* manager instance combination.
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*/
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#define ACP63_SDW_PDM_DEV_CONFIG GENMASK(1, 0)
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#define ACP_SDW0_STAT BIT(21)
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#define ACP_SDW1_STAT BIT(2)
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#define ACP_ERROR_IRQ BIT(29)
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enum acp_config {
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ACP_CONFIG_0 = 0,
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ACP_CONFIG_1,
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ACP_CONFIG_2,
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ACP_CONFIG_3,
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ACP_CONFIG_4,
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ACP_CONFIG_5,
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ACP_CONFIG_6,
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ACP_CONFIG_7,
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ACP_CONFIG_8,
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ACP_CONFIG_9,
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ACP_CONFIG_10,
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ACP_CONFIG_11,
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ACP_CONFIG_12,
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ACP_CONFIG_13,
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ACP_CONFIG_14,
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ACP_CONFIG_15,
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};
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struct pdm_stream_instance {
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u16 num_pages;
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u16 channels;
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dma_addr_t dma_addr;
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u64 bytescount;
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void __iomem *acp63_base;
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};
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struct pdm_dev_data {
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u32 pdm_irq;
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void __iomem *acp63_base;
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struct mutex *acp_lock;
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struct snd_pcm_substream *capture_stream;
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};
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struct sdw_dma_dev_data {
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void __iomem *acp_base;
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struct mutex *acp_lock; /* used to protect acp common register access */
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};
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/**
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* struct acp63_dev_data - acp pci driver context
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* @acp63_base: acp mmio base
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* @res: resource
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* @pdev: array of child platform device node structures
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* @acp_lock: used to protect acp common registers
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* @sdw_fw_node: SoundWire controller fw node handle
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* @pdev_config: platform device configuration
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* @pdev_count: platform devices count
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* @pdm_dev_index: pdm platform device index
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* @sdw_manager_count: SoundWire manager instance count
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* @sdw0_dev_index: SoundWire Manager-0 platform device index
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* @sdw1_dev_index: SoundWire Manager-1 platform device index
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* @sdw_dma_dev_index: SoundWire DMA controller platform device index
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* @acp_reset: flag set to true when bus reset is applied across all
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* the active SoundWire manager instances
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*/
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struct acp63_dev_data {
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void __iomem *acp63_base;
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struct resource *res;
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struct platform_device *pdev[ACP63_DEVS];
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struct mutex acp_lock; /* protect shared registers */
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struct fwnode_handle *sdw_fw_node;
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u16 pdev_config;
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u16 pdev_count;
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u16 pdm_dev_index;
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u8 sdw_manager_count;
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u16 sdw0_dev_index;
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u16 sdw1_dev_index;
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u16 sdw_dma_dev_index;
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bool acp_reset;
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};
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int snd_amd_acp_find_config(struct pci_dev *pci);
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