1 /* SPDX-License-Identifier: GPL-2.0+ */
3 * AMD ALSA SoC PDM Driver
5 * Copyright (C) 2022, 2023 Advanced Micro Devices, Inc. All rights reserved.
8 #include <sound/acp63_chip_offset_byte.h>
10 #define ACP_DEVICE_ID 0x15E2
11 #define ACP63_REG_START 0x1240000
12 #define ACP63_REG_END 0x1250200
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
24 #define ACP_ERROR_MASK 0x20000000
25 #define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
26 #define PDM_DMA_STAT 0x10
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
38 #define ACP_COUNTER 20000
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
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
50 #define MAX_BUFFER (CAPTURE_MAX_PERIOD_SIZE * CAPTURE_MAX_NUM_PERIODS)
51 #define MIN_BUFFER MAX_BUFFER
53 /* time in ms for runtime suspend delay */
54 #define ACP_SUSPEND_DELAY_MS 2000
56 #define ACP_DMIC_DEV 2
58 /* ACP63_PDM_MODE_DEVS corresponds to platform devices count for ACP PDM configuration */
59 #define ACP63_PDM_MODE_DEVS 3
62 * ACP63_SDW0_MODE_DEVS corresponds to platform devices count for
63 * SW0 SoundWire manager instance configuration
65 #define ACP63_SDW0_MODE_DEVS 2
68 * ACP63_SDW0_SDW1_MODE_DEVS corresponds to platform devices count for SW0 + SW1 SoundWire manager
69 * instances configuration
71 #define ACP63_SDW0_SDW1_MODE_DEVS 3
74 * ACP63_SDW0_PDM_MODE_DEVS corresponds to platform devices count for SW0 manager
75 * instance + ACP PDM controller configuration
77 #define ACP63_SDW0_PDM_MODE_DEVS 4
80 * ACP63_SDW0_SDW1_PDM_MODE_DEVS corresponds to platform devices count for
81 * SW0 + SW1 SoundWire manager instances + ACP PDM controller configuration
83 #define ACP63_SDW0_SDW1_PDM_MODE_DEVS 5
84 #define ACP63_DMIC_ADDR 2
85 #define ACP63_SDW_ADDR 5
86 #define AMD_SDW_MAX_MANAGERS 2
88 /* time in ms for acp timeout */
89 #define ACP_TIMEOUT 500
91 /* ACP63_PDM_DEV_CONFIG corresponds to platform device configuration for ACP PDM controller */
92 #define ACP63_PDM_DEV_CONFIG BIT(0)
94 /* ACP63_SDW_DEV_CONFIG corresponds to platform device configuration for SDW manager instances */
95 #define ACP63_SDW_DEV_CONFIG BIT(1)
98 * ACP63_SDW_PDM_DEV_CONFIG corresponds to platform device configuration for ACP PDM + SoundWire
99 * manager instance combination.
101 #define ACP63_SDW_PDM_DEV_CONFIG GENMASK(1, 0)
102 #define ACP_SDW0_STAT BIT(21)
103 #define ACP_SDW1_STAT BIT(2)
104 #define ACP_ERROR_IRQ BIT(29)
106 #define ACP_AUDIO0_TX_THRESHOLD 0x1c
107 #define ACP_AUDIO1_TX_THRESHOLD 0x1a
108 #define ACP_AUDIO2_TX_THRESHOLD 0x18
109 #define ACP_AUDIO0_RX_THRESHOLD 0x1b
110 #define ACP_AUDIO1_RX_THRESHOLD 0x19
111 #define ACP_AUDIO2_RX_THRESHOLD 0x17
112 #define ACP_P1_AUDIO1_TX_THRESHOLD BIT(6)
113 #define ACP_P1_AUDIO1_RX_THRESHOLD BIT(5)
114 #define ACP_SDW_DMA_IRQ_MASK 0x1F800000
115 #define ACP_P1_SDW_DMA_IRQ_MASK 0x60
116 #define ACP63_SDW0_DMA_MAX_STREAMS 6
117 #define ACP63_SDW1_DMA_MAX_STREAMS 2
118 #define ACP_P1_AUDIO_TX_THRESHOLD 6
119 #define SDW0_DMA_TX_IRQ_MASK(i) (ACP_AUDIO0_TX_THRESHOLD - (2 * (i)))
120 #define SDW0_DMA_RX_IRQ_MASK(i) (ACP_AUDIO0_RX_THRESHOLD - (2 * (i)))
121 #define SDW1_DMA_IRQ_MASK(i) (ACP_P1_AUDIO_TX_THRESHOLD - (i))
123 #define ACP_DELAY_US 5
124 #define ACP_SDW_RING_BUFF_ADDR_OFFSET (128 * 1024)
125 #define SDW0_MEM_WINDOW_START 0x4800000
126 #define ACP_SDW_SRAM_PTE_OFFSET 0x03800400
127 #define SDW0_PTE_OFFSET 0x400
128 #define SDW_FIFO_SIZE 0x100
129 #define SDW_DMA_SIZE 0x40
130 #define ACP_SDW0_FIFO_OFFSET 0x100
131 #define ACP_SDW_PTE_OFFSET 0x100
132 #define SDW_FIFO_OFFSET 0x100
133 #define SDW_PTE_OFFSET(i) (SDW0_PTE_OFFSET + ((i) * 0x600))
134 #define ACP_SDW_FIFO_OFFSET(i) (ACP_SDW0_FIFO_OFFSET + ((i) * 0x500))
135 #define SDW_MEM_WINDOW_START(i) (SDW0_MEM_WINDOW_START + ((i) * 0xC0000))
137 #define SDW_PLAYBACK_MIN_NUM_PERIODS 2
138 #define SDW_PLAYBACK_MAX_NUM_PERIODS 8
139 #define SDW_PLAYBACK_MAX_PERIOD_SIZE 8192
140 #define SDW_PLAYBACK_MIN_PERIOD_SIZE 1024
141 #define SDW_CAPTURE_MIN_NUM_PERIODS 2
142 #define SDW_CAPTURE_MAX_NUM_PERIODS 8
143 #define SDW_CAPTURE_MAX_PERIOD_SIZE 8192
144 #define SDW_CAPTURE_MIN_PERIOD_SIZE 1024
146 #define SDW_MAX_BUFFER (SDW_PLAYBACK_MAX_PERIOD_SIZE * SDW_PLAYBACK_MAX_NUM_PERIODS)
147 #define SDW_MIN_BUFFER SDW_MAX_BUFFER
168 enum amd_sdw0_channel {
169 ACP_SDW0_AUDIO0_TX = 0,
177 enum amd_sdw1_channel {
182 struct pdm_stream_instance {
187 void __iomem *acp63_base;
190 struct pdm_dev_data {
192 void __iomem *acp63_base;
193 struct mutex *acp_lock;
194 struct snd_pcm_substream *capture_stream;
197 struct sdw_dma_dev_data {
198 void __iomem *acp_base;
199 struct mutex *acp_lock; /* used to protect acp common register access */
200 struct snd_pcm_substream *sdw0_dma_stream[ACP63_SDW0_DMA_MAX_STREAMS];
201 struct snd_pcm_substream *sdw1_dma_stream[ACP63_SDW1_DMA_MAX_STREAMS];
204 struct acp_sdw_dma_stream {
213 union acp_sdw_dma_count {
221 struct sdw_dma_ring_buf_reg {
225 u32 reg_ring_buf_size;
226 u32 reg_ring_buf_addr;
227 u32 water_mark_size_reg;
233 * struct acp63_dev_data - acp pci driver context
234 * @acp63_base: acp mmio base
236 * @pdev: array of child platform device node structures
237 * @acp_lock: used to protect acp common registers
238 * @sdw_fw_node: SoundWire controller fw node handle
239 * @pdev_config: platform device configuration
240 * @pdev_count: platform devices count
241 * @pdm_dev_index: pdm platform device index
242 * @sdw_manager_count: SoundWire manager instance count
243 * @sdw0_dev_index: SoundWire Manager-0 platform device index
244 * @sdw1_dev_index: SoundWire Manager-1 platform device index
245 * @sdw_dma_dev_index: SoundWire DMA controller platform device index
246 * @sdw0-dma_intr_stat: DMA interrupt status array for SoundWire manager-SW0 instance
247 * @sdw_dma_intr_stat: DMA interrupt status array for SoundWire manager-SW1 instance
248 * @acp_reset: flag set to true when bus reset is applied across all
249 * the active SoundWire manager instances
252 struct acp63_dev_data {
253 void __iomem *acp63_base;
254 struct resource *res;
255 struct platform_device *pdev[ACP63_DEVS];
256 struct mutex acp_lock; /* protect shared registers */
257 struct fwnode_handle *sdw_fw_node;
261 u8 sdw_manager_count;
264 u16 sdw_dma_dev_index;
265 u16 sdw0_dma_intr_stat[ACP63_SDW0_DMA_MAX_STREAMS];
266 u16 sdw1_dma_intr_stat[ACP63_SDW1_DMA_MAX_STREAMS];
270 int snd_amd_acp_find_config(struct pci_dev *pci);