1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * AMD ALSA SoC PDM Driver 4 * 5 * Copyright (C) 2022, 2023 Advanced Micro Devices, Inc. All rights reserved. 6 */ 7 8 #include <linux/soundwire/sdw_amd.h> 9 #include <sound/acp63_chip_offset_byte.h> 10 11 #define ACP_DEVICE_ID 0x15E2 12 #define ACP63_REG_START 0x1240000 13 #define ACP63_REG_END 0x125C000 14 15 #define ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK 0x00010001 16 #define ACP_PGFSM_CNTL_POWER_ON_MASK 1 17 #define ACP_PGFSM_CNTL_POWER_OFF_MASK 0 18 #define ACP_PGFSM_STATUS_MASK 3 19 #define ACP_POWERED_ON 0 20 #define ACP_POWER_ON_IN_PROGRESS 1 21 #define ACP_POWERED_OFF 2 22 #define ACP_POWER_OFF_IN_PROGRESS 3 23 24 #define ACP_ERROR_MASK 0x20000000 25 #define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF 26 #define PDM_DMA_STAT 0x10 27 28 #define PDM_DMA_INTR_MASK 0x10000 29 #define ACP_ERROR_STAT 29 30 #define PDM_DECIMATION_FACTOR 2 31 #define ACP_PDM_CLK_FREQ_MASK 7 32 #define ACP_WOV_GAIN_CONTROL GENMASK(4, 3) 33 #define ACP_PDM_ENABLE 1 34 #define ACP_PDM_DISABLE 0 35 #define ACP_PDM_DMA_EN_STATUS 2 36 #define TWO_CH 2 37 #define DELAY_US 5 38 #define ACP_COUNTER 20000 39 40 #define ACP_SRAM_PTE_OFFSET 0x03800000 41 #define PAGE_SIZE_4K_ENABLE 2 42 #define PDM_PTE_OFFSET 0 43 #define PDM_MEM_WINDOW_START 0x4000000 44 45 #define CAPTURE_MIN_NUM_PERIODS 4 46 #define CAPTURE_MAX_NUM_PERIODS 4 47 #define CAPTURE_MAX_PERIOD_SIZE 8192 48 #define CAPTURE_MIN_PERIOD_SIZE 4096 49 50 #define MAX_BUFFER (CAPTURE_MAX_PERIOD_SIZE * CAPTURE_MAX_NUM_PERIODS) 51 #define MIN_BUFFER MAX_BUFFER 52 53 /* time in ms for runtime suspend delay */ 54 #define ACP_SUSPEND_DELAY_MS 2000 55 56 #define ACP_DMIC_DEV 2 57 58 #define ACP63_DMIC_ADDR 2 59 #define ACP63_SDW_ADDR 5 60 #define AMD_SDW_MAX_MANAGERS 2 61 62 /* time in ms for acp timeout */ 63 #define ACP_TIMEOUT 500 64 65 #define ACP_SDW0_STAT BIT(21) 66 #define ACP_SDW1_STAT BIT(2) 67 #define ACP_ERROR_IRQ BIT(29) 68 69 #define ACP_AUDIO0_TX_THRESHOLD 0x1c 70 #define ACP_AUDIO1_TX_THRESHOLD 0x1a 71 #define ACP_AUDIO2_TX_THRESHOLD 0x18 72 #define ACP_AUDIO0_RX_THRESHOLD 0x1b 73 #define ACP_AUDIO1_RX_THRESHOLD 0x19 74 #define ACP_AUDIO2_RX_THRESHOLD 0x17 75 #define ACP_P1_AUDIO1_TX_THRESHOLD BIT(6) 76 #define ACP_P1_AUDIO1_RX_THRESHOLD BIT(5) 77 #define ACP_SDW_DMA_IRQ_MASK 0x1F800000 78 #define ACP_P1_SDW_DMA_IRQ_MASK 0x60 79 #define ACP63_SDW0_DMA_MAX_STREAMS 6 80 #define ACP63_SDW1_DMA_MAX_STREAMS 2 81 #define ACP_P1_AUDIO_TX_THRESHOLD 6 82 83 /* 84 * Below entries describes SDW0 instance DMA stream id and DMA irq bit mapping 85 * in ACP_EXTENAL_INTR_CNTL register. 86 * Stream id IRQ Bit 87 * 0 (SDW0_AUDIO0_TX) 28 88 * 1 (SDW0_AUDIO1_TX) 26 89 * 2 (SDW0_AUDIO2_TX) 24 90 * 3 (SDW0_AUDIO0_RX) 27 91 * 4 (SDW0_AUDIO1_RX) 25 92 * 5 (SDW0_AUDIO2_RX) 23 93 */ 94 #define SDW0_DMA_TX_IRQ_MASK(i) (ACP_AUDIO0_TX_THRESHOLD - (2 * (i))) 95 #define SDW0_DMA_RX_IRQ_MASK(i) (ACP_AUDIO0_RX_THRESHOLD - (2 * ((i) - 3))) 96 97 /* 98 * Below entries describes SDW1 instance DMA stream id and DMA irq bit mapping 99 * in ACP_EXTENAL_INTR_CNTL1 register. 100 * Stream id IRQ Bit 101 * 0 (SDW1_AUDIO1_TX) 6 102 * 1 (SDW1_AUDIO1_RX) 5 103 */ 104 #define SDW1_DMA_IRQ_MASK(i) (ACP_P1_AUDIO_TX_THRESHOLD - (i)) 105 106 #define ACP_DELAY_US 5 107 #define ACP_SDW_RING_BUFF_ADDR_OFFSET (128 * 1024) 108 #define SDW0_MEM_WINDOW_START 0x4800000 109 #define ACP_SDW_SRAM_PTE_OFFSET 0x03800400 110 #define SDW0_PTE_OFFSET 0x400 111 #define SDW_FIFO_SIZE 0x100 112 #define SDW_DMA_SIZE 0x40 113 #define ACP_SDW0_FIFO_OFFSET 0x100 114 #define ACP_SDW_PTE_OFFSET 0x100 115 #define SDW_FIFO_OFFSET 0x100 116 #define SDW_PTE_OFFSET(i) (SDW0_PTE_OFFSET + ((i) * 0x600)) 117 #define ACP_SDW_FIFO_OFFSET(i) (ACP_SDW0_FIFO_OFFSET + ((i) * 0x500)) 118 #define SDW_MEM_WINDOW_START(i) (SDW0_MEM_WINDOW_START + ((i) * 0xC0000)) 119 120 #define SDW_PLAYBACK_MIN_NUM_PERIODS 2 121 #define SDW_PLAYBACK_MAX_NUM_PERIODS 8 122 #define SDW_PLAYBACK_MAX_PERIOD_SIZE 8192 123 #define SDW_PLAYBACK_MIN_PERIOD_SIZE 1024 124 #define SDW_CAPTURE_MIN_NUM_PERIODS 2 125 #define SDW_CAPTURE_MAX_NUM_PERIODS 8 126 #define SDW_CAPTURE_MAX_PERIOD_SIZE 8192 127 #define SDW_CAPTURE_MIN_PERIOD_SIZE 1024 128 129 #define SDW_MAX_BUFFER (SDW_PLAYBACK_MAX_PERIOD_SIZE * SDW_PLAYBACK_MAX_NUM_PERIODS) 130 #define SDW_MIN_BUFFER SDW_MAX_BUFFER 131 132 enum acp_config { 133 ACP_CONFIG_0 = 0, 134 ACP_CONFIG_1, 135 ACP_CONFIG_2, 136 ACP_CONFIG_3, 137 ACP_CONFIG_4, 138 ACP_CONFIG_5, 139 ACP_CONFIG_6, 140 ACP_CONFIG_7, 141 ACP_CONFIG_8, 142 ACP_CONFIG_9, 143 ACP_CONFIG_10, 144 ACP_CONFIG_11, 145 ACP_CONFIG_12, 146 ACP_CONFIG_13, 147 ACP_CONFIG_14, 148 ACP_CONFIG_15, 149 }; 150 151 enum amd_sdw0_channel { 152 ACP_SDW0_AUDIO0_TX = 0, 153 ACP_SDW0_AUDIO1_TX, 154 ACP_SDW0_AUDIO2_TX, 155 ACP_SDW0_AUDIO0_RX, 156 ACP_SDW0_AUDIO1_RX, 157 ACP_SDW0_AUDIO2_RX, 158 }; 159 160 enum amd_sdw1_channel { 161 ACP_SDW1_AUDIO1_TX, 162 ACP_SDW1_AUDIO1_RX, 163 }; 164 165 struct pdm_stream_instance { 166 u16 num_pages; 167 u16 channels; 168 dma_addr_t dma_addr; 169 u64 bytescount; 170 void __iomem *acp63_base; 171 }; 172 173 struct pdm_dev_data { 174 u32 pdm_irq; 175 void __iomem *acp63_base; 176 struct mutex *acp_lock; 177 struct snd_pcm_substream *capture_stream; 178 }; 179 180 struct sdw_dma_dev_data { 181 void __iomem *acp_base; 182 struct mutex *acp_lock; /* used to protect acp common register access */ 183 struct snd_pcm_substream *sdw0_dma_stream[ACP63_SDW0_DMA_MAX_STREAMS]; 184 struct snd_pcm_substream *sdw1_dma_stream[ACP63_SDW1_DMA_MAX_STREAMS]; 185 }; 186 187 struct acp_sdw_dma_stream { 188 u16 num_pages; 189 u16 channels; 190 u32 stream_id; 191 u32 instance; 192 dma_addr_t dma_addr; 193 u64 bytescount; 194 }; 195 196 union acp_sdw_dma_count { 197 struct { 198 u32 low; 199 u32 high; 200 } bcount; 201 u64 bytescount; 202 }; 203 204 struct sdw_dma_ring_buf_reg { 205 u32 reg_dma_size; 206 u32 reg_fifo_addr; 207 u32 reg_fifo_size; 208 u32 reg_ring_buf_size; 209 u32 reg_ring_buf_addr; 210 u32 water_mark_size_reg; 211 u32 pos_low_reg; 212 u32 pos_high_reg; 213 }; 214 215 /** 216 * struct acp63_dev_data - acp pci driver context 217 * @acp63_base: acp mmio base 218 * @res: resource 219 * @pdm_dev: ACP PDM controller platform device 220 * @dmic_codec: platform device for DMIC Codec 221 * sdw_dma_dev: platform device for SoundWire DMA controller 222 * @mach_dev: platform device for machine driver to support ACP PDM/SoundWire configuration 223 * @acp_lock: used to protect acp common registers 224 * @info: SoundWire AMD information found in ACPI tables 225 * @sdw: SoundWire context for all SoundWire manager instances 226 * @machine: ACPI machines for SoundWire interface 227 * @is_sdw_dev: flag set to true when any SoundWire manager instances are available 228 * @is_pdm_dev: flag set to true when ACP PDM controller exists 229 * @is_pdm_config: flat set to true when PDM configuration is selected from BIOS 230 * @is_sdw_config: flag set to true when SDW configuration is selected from BIOS 231 * @sdw_en_stat: flag set to true when any one of the SoundWire manager instance is enabled 232 * @addr: pci ioremap address 233 * @reg_range: ACP reigister range 234 * @acp_rev: ACP PCI revision id 235 * @sdw0-dma_intr_stat: DMA interrupt status array for SoundWire manager-SW0 instance 236 * @sdw_dma_intr_stat: DMA interrupt status array for SoundWire manager-SW1 instance 237 */ 238 239 struct acp63_dev_data { 240 void __iomem *acp63_base; 241 struct resource *res; 242 struct platform_device *pdm_dev; 243 struct platform_device *dmic_codec_dev; 244 struct platform_device *sdw_dma_dev; 245 struct platform_device *mach_dev; 246 struct mutex acp_lock; /* protect shared registers */ 247 struct sdw_amd_acpi_info info; 248 /* sdw context allocated by SoundWire driver */ 249 struct sdw_amd_ctx *sdw; 250 struct snd_soc_acpi_mach *machines; 251 bool is_sdw_dev; 252 bool is_pdm_dev; 253 bool is_pdm_config; 254 bool is_sdw_config; 255 bool sdw_en_stat; 256 u32 addr; 257 u32 reg_range; 258 u32 acp_rev; 259 u16 sdw0_dma_intr_stat[ACP63_SDW0_DMA_MAX_STREAMS]; 260 u16 sdw1_dma_intr_stat[ACP63_SDW1_DMA_MAX_STREAMS]; 261 }; 262 263 int snd_amd_acp_find_config(struct pci_dev *pci); 264