acp70.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 or
  4// 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 block
 11 */
 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#include <asm/amd/node.h>
 27
 28#define DRV_NAME "acp_asoc_acp70"
 29
 30#define CLK7_CLK0_DFS_CNTL_N1		0X0006C1A4
 31#define CLK0_DIVIDER			0X19
 32
 33static struct snd_soc_dai_driver acp70_dai[] = {
 34{
 35	.name = "acp-i2s-sp",
 36	.id = I2S_SP_INSTANCE,
 37	.playback = {
 38		.stream_name = "I2S SP Playback",
 39		.rates = SNDRV_PCM_RATE_8000_192000,
 40		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
 41			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
 42		.channels_min = 2,
 43		.channels_max = 32,
 44		.rate_min = 8000,
 45		.rate_max = 192000,
 46	},
 47	.capture = {
 48		.stream_name = "I2S SP Capture",
 49		.rates = SNDRV_PCM_RATE_8000_192000,
 50		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
 51			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
 52		.channels_min = 2,
 53		.channels_max = 32,
 54		.rate_min = 8000,
 55		.rate_max = 192000,
 56	},
 57	.ops = &asoc_acp_cpu_dai_ops,
 58},
 59{
 60	.name = "acp-i2s-bt",
 61	.id = I2S_BT_INSTANCE,
 62	.playback = {
 63		.stream_name = "I2S BT Playback",
 64		.rates = SNDRV_PCM_RATE_8000_192000,
 65		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
 66			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
 67		.channels_min = 2,
 68		.channels_max = 32,
 69		.rate_min = 8000,
 70		.rate_max = 192000,
 71	},
 72	.capture = {
 73		.stream_name = "I2S BT Capture",
 74		.rates = SNDRV_PCM_RATE_8000_192000,
 75		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
 76			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
 77		.channels_min = 2,
 78		.channels_max = 32,
 79		.rate_min = 8000,
 80		.rate_max = 192000,
 81	},
 82	.ops = &asoc_acp_cpu_dai_ops,
 83},
 84{
 85	.name = "acp-i2s-hs",
 86	.id = I2S_HS_INSTANCE,
 87	.playback = {
 88		.stream_name = "I2S HS Playback",
 89		.rates = SNDRV_PCM_RATE_8000_192000,
 90		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
 91			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
 92		.channels_min = 2,
 93		.channels_max = 32,
 94		.rate_min = 8000,
 95		.rate_max = 192000,
 96	},
 97	.capture = {
 98		.stream_name = "I2S HS Capture",
 99		.rates = SNDRV_PCM_RATE_8000_192000,
100		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
101			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
102		.channels_min = 2,
103		.channels_max = 32,
104		.rate_min = 8000,
105		.rate_max = 192000,
106	},
107	.ops = &asoc_acp_cpu_dai_ops,
108},
109{
110	.name = "acp-pdm-dmic",
111	.id = DMIC_INSTANCE,
112	.capture = {
113		.rates = SNDRV_PCM_RATE_8000_48000,
114		.formats = SNDRV_PCM_FMTBIT_S32_LE,
115		.channels_min = 2,
116		.channels_max = 2,
117		.rate_min = 8000,
118		.rate_max = 48000,
119	},
120	.ops = &acp_dmic_dai_ops,
121},
122};
123
124static int acp_acp70_audio_probe(struct platform_device *pdev)
125{
126	struct device *dev = &pdev->dev;
127	struct acp_chip_info *chip;
128	int ret;
129
130	chip = dev_get_platdata(&pdev->dev);
131	if (!chip || !chip->base) {
132		dev_err(&pdev->dev, "ACP chip data is NULL\n");
133		return -ENODEV;
134	}
135
136	switch (chip->acp_rev) {
137	case ACP70_PCI_ID:
138	case ACP71_PCI_ID:
139	case ACP72_PCI_ID:
140		break;
141	default:
142		dev_err(&pdev->dev, "Un-supported ACP Revision %d\n", chip->acp_rev);
143		return -ENODEV;
144	}
145
146	chip->dev = dev;
147	chip->dai_driver = acp70_dai;
148	chip->num_dai = ARRAY_SIZE(acp70_dai);
149
150	/* Set clk7 DFS clock divider register value to get mclk as 196.608MHz*/
151	ret = amd_smn_write(0, CLK7_CLK0_DFS_CNTL_N1, CLK0_DIVIDER);
152	if (ret) {
153		dev_err(&pdev->dev, "Failed to set I2S master clock as 196.608MHz\n");
154		return ret;
155	}
156	ret = acp_hw_en_interrupts(chip);
157	if (ret) {
158		dev_err(dev, "ACP en-interrupts failed\n");
159		return ret;
160	}
161	acp_platform_register(dev);
162	pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
163	pm_runtime_use_autosuspend(&pdev->dev);
164	pm_runtime_mark_last_busy(&pdev->dev);
165	pm_runtime_set_active(&pdev->dev);
166	pm_runtime_enable(&pdev->dev);
167	return 0;
168}
169
170static void acp_acp70_audio_remove(struct platform_device *pdev)
171{
172	struct device *dev = &pdev->dev;
173	struct acp_chip_info *chip = dev_get_platdata(dev);
174	int ret;
175
176	ret = acp_hw_dis_interrupts(chip);
177	if (ret)
178		dev_err(dev, "ACP dis-interrupts failed\n");
179
180	acp_platform_unregister(dev);
181	pm_runtime_disable(&pdev->dev);
182}
183
184static int acp70_pcm_resume(struct device *dev)
185{
186	struct acp_chip_info *chip = dev_get_drvdata(dev->parent);
187	struct acp_stream *stream;
188	struct snd_pcm_substream *substream;
189	snd_pcm_uframes_t buf_in_frames;
190	u64 buf_size;
191
192	spin_lock(&chip->acp_lock);
193	list_for_each_entry(stream, &chip->stream_list, list) {
194		substream = stream->substream;
195		if (substream && substream->runtime) {
196			buf_in_frames = (substream->runtime->buffer_size);
197			buf_size = frames_to_bytes(substream->runtime, buf_in_frames);
198			config_pte_for_stream(chip, stream);
199			config_acp_dma(chip, stream, buf_size);
200			if (stream->dai_id)
201				restore_acp_i2s_params(substream, chip, stream);
202			else
203				restore_acp_pdm_params(substream, chip);
204		}
205	}
206	spin_unlock(&chip->acp_lock);
207	return 0;
208}
209
210static const struct dev_pm_ops acp70_dma_pm_ops = {
211	SYSTEM_SLEEP_PM_OPS(NULL, acp70_pcm_resume)
212};
213
214static struct platform_driver acp70_driver = {
215	.probe = acp_acp70_audio_probe,
216	.remove = acp_acp70_audio_remove,
217	.driver = {
218		.name = "acp_asoc_acp70",
219		.pm = pm_ptr(&acp70_dma_pm_ops),
220	},
221};
222
223module_platform_driver(acp70_driver);
224
225MODULE_DESCRIPTION("AMD ACP ACP70 Driver");
226MODULE_IMPORT_NS("SND_SOC_ACP_COMMON");
227MODULE_LICENSE("Dual BSD/GPL");
228MODULE_ALIAS("platform:" DRV_NAME);