1/* SPDX-License-Identifier: GPL-2.0+ */ 2/* 3 * AMD ALSA SoC PCM Driver 4 * 5 * Copyright 2016 Advanced Micro Devices, Inc. 6 */ 7 8#include "chip_offset_byte.h" 9#include <sound/pcm.h> 10#define I2S_SP_INSTANCE 0x01 11#define I2S_BT_INSTANCE 0x02 12 13#define TDM_ENABLE 1 14#define TDM_DISABLE 0 15 16#define ACP3x_DEVS 4 17#define ACP3x_PHY_BASE_ADDRESS 0x1240000 18#define ACP3x_I2S_MODE 0 19#define ACP3x_REG_START 0x1240000 20#define ACP3x_REG_END 0x1250200 21#define ACP3x_I2STDM_REG_START 0x1242400 22#define ACP3x_I2STDM_REG_END 0x1242410 23#define ACP3x_BT_TDM_REG_START 0x1242800 24#define ACP3x_BT_TDM_REG_END 0x1242810 25#define I2S_MODE 0x04 26#define I2S_RX_THRESHOLD 27 27#define I2S_TX_THRESHOLD 28 28#define BT_TX_THRESHOLD 26 29#define BT_RX_THRESHOLD 25 30#define ACP_ERR_INTR_MASK 29 31#define ACP3x_POWER_ON 0x00 32#define ACP3x_POWER_ON_IN_PROGRESS 0x01 33#define ACP3x_POWER_OFF 0x02 34#define ACP3x_POWER_OFF_IN_PROGRESS 0x03 35#define ACP3x_SOFT_RESET__SoftResetAudDone_MASK 0x00010001 36 37#define ACP_SRAM_PTE_OFFSET 0x02050000 38#define ACP_SRAM_SP_PB_PTE_OFFSET 0x0 39#define ACP_SRAM_SP_CP_PTE_OFFSET 0x100 40#define ACP_SRAM_BT_PB_PTE_OFFSET 0x200 41#define ACP_SRAM_BT_CP_PTE_OFFSET 0x300 42#define PAGE_SIZE_4K_ENABLE 0x2 43#define I2S_SP_TX_MEM_WINDOW_START 0x4000000 44#define I2S_SP_RX_MEM_WINDOW_START 0x4020000 45#define I2S_BT_TX_MEM_WINDOW_START 0x4040000 46#define I2S_BT_RX_MEM_WINDOW_START 0x4060000 47 48#define SP_PB_FIFO_ADDR_OFFSET 0x500 49#define SP_CAPT_FIFO_ADDR_OFFSET 0x700 50#define BT_PB_FIFO_ADDR_OFFSET 0x900 51#define BT_CAPT_FIFO_ADDR_OFFSET 0xB00 52#define PLAYBACK_MIN_NUM_PERIODS 2 53#define PLAYBACK_MAX_NUM_PERIODS 8 54#define PLAYBACK_MAX_PERIOD_SIZE 8192 55#define PLAYBACK_MIN_PERIOD_SIZE 1024 56#define CAPTURE_MIN_NUM_PERIODS 2 57#define CAPTURE_MAX_NUM_PERIODS 8 58#define CAPTURE_MAX_PERIOD_SIZE 8192 59#define CAPTURE_MIN_PERIOD_SIZE 1024 60 61#define MAX_BUFFER (PLAYBACK_MAX_PERIOD_SIZE * PLAYBACK_MAX_NUM_PERIODS) 62#define MIN_BUFFER MAX_BUFFER 63#define FIFO_SIZE 0x100 64#define DMA_SIZE 0x40 65#define FRM_LEN 0x100 66 67#define SLOT_WIDTH_8 0x08 68#define SLOT_WIDTH_16 0x10 69#define SLOT_WIDTH_24 0x18 70#define SLOT_WIDTH_32 0x20 71#define ACP_PGFSM_CNTL_POWER_ON_MASK 0x01 72#define ACP_PGFSM_CNTL_POWER_OFF_MASK 0x00 73#define ACP_PGFSM_STATUS_MASK 0x03 74#define ACP_POWERED_ON 0x00 75#define ACP_POWER_ON_IN_PROGRESS 0x01 76#define ACP_POWERED_OFF 0x02 77#define ACP_POWER_OFF_IN_PROGRESS 0x03 78 79#define ACP3x_ITER_IRER_SAMP_LEN_MASK 0x38 80#define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF 81 82struct acp3x_platform_info { 83 u16 play_i2s_instance; 84 u16 cap_i2s_instance; 85 u16 capture_channel; 86}; 87 88struct i2s_dev_data { 89 bool tdm_mode; 90 int i2s_irq; 91 u16 i2s_instance; 92 u32 tdm_fmt; 93 u32 substream_type; 94 void __iomem *acp3x_base; 95 struct snd_pcm_substream *play_stream; 96 struct snd_pcm_substream *capture_stream; 97 struct snd_pcm_substream *i2ssp_play_stream; 98 struct snd_pcm_substream *i2ssp_capture_stream; 99}; 100 101struct i2s_stream_instance { 102 u16 num_pages; 103 u16 i2s_instance; 104 u16 capture_channel; 105 u16 direction; 106 u16 channels; 107 u32 xfer_resolution; 108 u32 val; 109 dma_addr_t dma_addr; 110 u64 bytescount; 111 void __iomem *acp3x_base; 112}; 113 114static inline u32 rv_readl(void __iomem *base_addr) 115{ 116 return readl(base_addr - ACP3x_PHY_BASE_ADDRESS); 117} 118 119static inline void rv_writel(u32 val, void __iomem *base_addr) 120{ 121 writel(val, base_addr - ACP3x_PHY_BASE_ADDRESS); 122} 123 124static inline u64 acp_get_byte_count(struct i2s_stream_instance *rtd, 125 int direction) 126{ 127 u64 byte_count; 128 129 if (direction == SNDRV_PCM_STREAM_PLAYBACK) { 130 switch (rtd->i2s_instance) { 131 case I2S_BT_INSTANCE: 132 byte_count = rv_readl(rtd->acp3x_base + 133 mmACP_BT_TX_LINEARPOSITIONCNTR_HIGH); 134 byte_count |= rv_readl(rtd->acp3x_base + 135 mmACP_BT_TX_LINEARPOSITIONCNTR_LOW); 136 break; 137 case I2S_SP_INSTANCE: 138 default: 139 byte_count = rv_readl(rtd->acp3x_base + 140 mmACP_I2S_TX_LINEARPOSITIONCNTR_HIGH); 141 byte_count |= rv_readl(rtd->acp3x_base + 142 mmACP_I2S_TX_LINEARPOSITIONCNTR_LOW); 143 } 144 145 } else { 146 switch (rtd->i2s_instance) { 147 case I2S_BT_INSTANCE: 148 byte_count = rv_readl(rtd->acp3x_base + 149 mmACP_BT_RX_LINEARPOSITIONCNTR_HIGH); 150 byte_count |= rv_readl(rtd->acp3x_base + 151 mmACP_BT_RX_LINEARPOSITIONCNTR_LOW); 152 break; 153 case I2S_SP_INSTANCE: 154 default: 155 byte_count = rv_readl(rtd->acp3x_base + 156 mmACP_I2S_RX_LINEARPOSITIONCNTR_HIGH); 157 byte_count |= rv_readl(rtd->acp3x_base + 158 mmACP_I2S_RX_LINEARPOSITIONCNTR_LOW); 159 } 160 } 161 return byte_count; 162} 163