294 lines · c
1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)2//3// This file is provided under a dual BSD/GPLv2 license. When using or4// redistributing this file, you may do so under either license.5//6// Copyright(c) 2023 Advanced Micro Devices, Inc.7//8// Authors: Syed Saba kareem <syed.sabakareem@amd.com>9/*10 * Hardware interface for ACP7.0 block11 */12 13#include <linux/platform_device.h>14#include <linux/module.h>15#include <linux/err.h>16#include <linux/io.h>17#include <sound/pcm_params.h>18#include <sound/soc.h>19#include <sound/soc-dai.h>20#include <linux/dma-mapping.h>21#include <linux/pm_runtime.h>22#include <linux/pci.h>23#include "amd.h"24#include "acp-mach.h"25 26#define DRV_NAME "acp_asoc_acp70"27 28#define CLK7_CLK0_DFS_CNTL_N1 0X0006C1A429#define CLK0_DIVIDER 0X1930 31static struct acp_resource rsrc = {32 .offset = 0,33 .no_of_ctrls = 2,34 .irqp_used = 1,35 .soc_mclk = true,36 .irq_reg_offset = 0x1a00,37 .scratch_reg_offset = 0x10000,38 .sram_pte_offset = 0x03800000,39};40 41static struct snd_soc_acpi_mach snd_soc_acpi_amd_acp70_acp_machines[] = {42 {43 .id = "AMDI0029",44 .drv_name = "acp70-acp",45 },46 {},47};48 49static struct snd_soc_dai_driver acp70_dai[] = {50{51 .name = "acp-i2s-sp",52 .id = I2S_SP_INSTANCE,53 .playback = {54 .stream_name = "I2S SP Playback",55 .rates = SNDRV_PCM_RATE_8000_192000,56 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |57 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,58 .channels_min = 2,59 .channels_max = 32,60 .rate_min = 8000,61 .rate_max = 192000,62 },63 .capture = {64 .stream_name = "I2S SP Capture",65 .rates = SNDRV_PCM_RATE_8000_192000,66 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |67 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,68 .channels_min = 2,69 .channels_max = 32,70 .rate_min = 8000,71 .rate_max = 192000,72 },73 .ops = &asoc_acp_cpu_dai_ops,74},75{76 .name = "acp-i2s-bt",77 .id = I2S_BT_INSTANCE,78 .playback = {79 .stream_name = "I2S BT Playback",80 .rates = SNDRV_PCM_RATE_8000_192000,81 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |82 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,83 .channels_min = 2,84 .channels_max = 32,85 .rate_min = 8000,86 .rate_max = 192000,87 },88 .capture = {89 .stream_name = "I2S BT Capture",90 .rates = SNDRV_PCM_RATE_8000_192000,91 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |92 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,93 .channels_min = 2,94 .channels_max = 32,95 .rate_min = 8000,96 .rate_max = 192000,97 },98 .ops = &asoc_acp_cpu_dai_ops,99},100{101 .name = "acp-i2s-hs",102 .id = I2S_HS_INSTANCE,103 .playback = {104 .stream_name = "I2S HS Playback",105 .rates = SNDRV_PCM_RATE_8000_192000,106 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |107 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,108 .channels_min = 2,109 .channels_max = 32,110 .rate_min = 8000,111 .rate_max = 192000,112 },113 .capture = {114 .stream_name = "I2S HS Capture",115 .rates = SNDRV_PCM_RATE_8000_192000,116 .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |117 SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,118 .channels_min = 2,119 .channels_max = 32,120 .rate_min = 8000,121 .rate_max = 192000,122 },123 .ops = &asoc_acp_cpu_dai_ops,124},125{126 .name = "acp-pdm-dmic",127 .id = DMIC_INSTANCE,128 .capture = {129 .rates = SNDRV_PCM_RATE_8000_48000,130 .formats = SNDRV_PCM_FMTBIT_S32_LE,131 .channels_min = 2,132 .channels_max = 2,133 .rate_min = 8000,134 .rate_max = 48000,135 },136 .ops = &acp_dmic_dai_ops,137},138};139 140static int acp70_i2s_master_clock_generate(struct acp_dev_data *adata)141{142 struct pci_dev *smn_dev;143 u32 device_id;144 145 if (adata->platform == ACP70)146 device_id = 0x1507;147 else if (adata->platform == ACP71)148 device_id = 0x1122;149 else150 return -ENODEV;151 152 smn_dev = pci_get_device(PCI_VENDOR_ID_AMD, device_id, NULL);153 154 if (!smn_dev)155 return -ENODEV;156 157 /* Set clk7 DFS clock divider register value to get mclk as 196.608MHz*/158 smn_write(smn_dev, CLK7_CLK0_DFS_CNTL_N1, CLK0_DIVIDER);159 160 return 0;161}162 163static int acp_acp70_audio_probe(struct platform_device *pdev)164{165 struct device *dev = &pdev->dev;166 struct acp_chip_info *chip;167 struct acp_dev_data *adata;168 struct resource *res;169 int ret;170 171 chip = dev_get_platdata(&pdev->dev);172 if (!chip || !chip->base) {173 dev_err(&pdev->dev, "ACP chip data is NULL\n");174 return -ENODEV;175 }176 177 switch (chip->acp_rev) {178 case ACP70_DEV:179 case ACP71_DEV:180 break;181 default:182 dev_err(&pdev->dev, "Un-supported ACP Revision %d\n", chip->acp_rev);183 return -ENODEV;184 }185 186 adata = devm_kzalloc(dev, sizeof(struct acp_dev_data), GFP_KERNEL);187 if (!adata)188 return -ENOMEM;189 190 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "acp_mem");191 if (!res) {192 dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");193 return -ENODEV;194 }195 196 adata->acp_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));197 if (!adata->acp_base)198 return -ENOMEM;199 200 res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "acp_dai_irq");201 if (!res) {202 dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n");203 return -ENODEV;204 }205 206 adata->i2s_irq = res->start;207 adata->dev = dev;208 adata->dai_driver = acp70_dai;209 adata->num_dai = ARRAY_SIZE(acp70_dai);210 adata->rsrc = &rsrc;211 adata->machines = snd_soc_acpi_amd_acp70_acp_machines;212 if (chip->acp_rev == ACP70_DEV)213 adata->platform = ACP70;214 else215 adata->platform = ACP71;216 217 adata->flag = chip->flag;218 acp_machine_select(adata);219 220 dev_set_drvdata(dev, adata);221 222 ret = acp70_i2s_master_clock_generate(adata);223 if (ret) {224 dev_err(&pdev->dev, "Failed to set I2S master clock as 196.608MHz\n");225 return ret;226 }227 acp_enable_interrupts(adata);228 acp_platform_register(dev);229 pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);230 pm_runtime_use_autosuspend(&pdev->dev);231 pm_runtime_mark_last_busy(&pdev->dev);232 pm_runtime_set_active(&pdev->dev);233 pm_runtime_enable(&pdev->dev);234 return 0;235}236 237static void acp_acp70_audio_remove(struct platform_device *pdev)238{239 struct device *dev = &pdev->dev;240 struct acp_dev_data *adata = dev_get_drvdata(dev);241 242 acp_disable_interrupts(adata);243 acp_platform_unregister(dev);244 pm_runtime_disable(&pdev->dev);245}246 247static int __maybe_unused acp70_pcm_resume(struct device *dev)248{249 struct acp_dev_data *adata = dev_get_drvdata(dev);250 struct acp_stream *stream;251 struct snd_pcm_substream *substream;252 snd_pcm_uframes_t buf_in_frames;253 u64 buf_size;254 255 spin_lock(&adata->acp_lock);256 list_for_each_entry(stream, &adata->stream_list, list) {257 if (stream) {258 substream = stream->substream;259 if (substream && substream->runtime) {260 buf_in_frames = (substream->runtime->buffer_size);261 buf_size = frames_to_bytes(substream->runtime, buf_in_frames);262 config_pte_for_stream(adata, stream);263 config_acp_dma(adata, stream, buf_size);264 if (stream->dai_id)265 restore_acp_i2s_params(substream, adata, stream);266 else267 restore_acp_pdm_params(substream, adata);268 }269 }270 }271 spin_unlock(&adata->acp_lock);272 return 0;273}274 275static const struct dev_pm_ops acp70_dma_pm_ops = {276 SET_SYSTEM_SLEEP_PM_OPS(NULL, acp70_pcm_resume)277};278 279static struct platform_driver acp70_driver = {280 .probe = acp_acp70_audio_probe,281 .remove = acp_acp70_audio_remove,282 .driver = {283 .name = "acp_asoc_acp70",284 .pm = &acp70_dma_pm_ops,285 },286};287 288module_platform_driver(acp70_driver);289 290MODULE_DESCRIPTION("AMD ACP ACP70 Driver");291MODULE_IMPORT_NS(SND_SOC_ACP_COMMON);292MODULE_LICENSE("Dual BSD/GPL");293MODULE_ALIAS("platform:" DRV_NAME);294