acp-rembrandt.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) 2022 Advanced Micro Devices, Inc.
  7//
  8// Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
  9//          V sujith kumar Reddy <Vsujithkumar.Reddy@amd.com>
 10/*
 11 * Hardware interface for Renoir ACP block
 12 */
 13
 14#include <linux/platform_device.h>
 15#include <linux/module.h>
 16#include <linux/err.h>
 17#include <linux/io.h>
 18#include <sound/pcm_params.h>
 19#include <sound/soc.h>
 20#include <sound/soc-dai.h>
 21#include <linux/dma-mapping.h>
 22#include <linux/pci.h>
 23#include <linux/pm_runtime.h>
 24
 25#include <asm/amd/node.h>
 26
 27#include "amd.h"
 28#include "../mach-config.h"
 29#include "acp-mach.h"
 30
 31#define DRV_NAME "acp_asoc_rembrandt"
 32
 33#define MP1_C2PMSG_69 0x3B10A14
 34#define MP1_C2PMSG_85 0x3B10A54
 35#define MP1_C2PMSG_93 0x3B10A74
 36
 37static struct snd_soc_dai_driver acp_rmb_dai[] = {
 38{
 39	.name = "acp-i2s-sp",
 40	.id = I2S_SP_INSTANCE,
 41	.playback = {
 42		.stream_name = "I2S SP Playback",
 43		.rates = SNDRV_PCM_RATE_8000_96000,
 44		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
 45			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
 46		.channels_min = 2,
 47		.channels_max = 8,
 48		.rate_min = 8000,
 49		.rate_max = 96000,
 50	},
 51	.capture = {
 52		.stream_name = "I2S SP Capture",
 53		.rates = SNDRV_PCM_RATE_8000_48000,
 54		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
 55			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
 56		.channels_min = 2,
 57		.channels_max = 2,
 58		.rate_min = 8000,
 59		.rate_max = 48000,
 60	},
 61	.ops = &asoc_acp_cpu_dai_ops,
 62},
 63{
 64	.name = "acp-i2s-bt",
 65	.id = I2S_BT_INSTANCE,
 66	.playback = {
 67		.stream_name = "I2S BT Playback",
 68		.rates = SNDRV_PCM_RATE_8000_96000,
 69		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
 70			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
 71		.channels_min = 2,
 72		.channels_max = 8,
 73		.rate_min = 8000,
 74		.rate_max = 96000,
 75	},
 76	.capture = {
 77		.stream_name = "I2S BT Capture",
 78		.rates = SNDRV_PCM_RATE_8000_48000,
 79		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
 80			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
 81		.channels_min = 2,
 82		.channels_max = 2,
 83		.rate_min = 8000,
 84		.rate_max = 48000,
 85	},
 86	.ops = &asoc_acp_cpu_dai_ops,
 87},
 88{
 89	.name = "acp-i2s-hs",
 90	.id = I2S_HS_INSTANCE,
 91	.playback = {
 92		.stream_name = "I2S HS Playback",
 93		.rates = SNDRV_PCM_RATE_8000_96000,
 94		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
 95			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
 96		.channels_min = 2,
 97		.channels_max = 8,
 98		.rate_min = 8000,
 99		.rate_max = 96000,
100	},
101	.capture = {
102		.stream_name = "I2S HS Capture",
103		.rates = SNDRV_PCM_RATE_8000_48000,
104		.formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
105			   SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
106		.channels_min = 2,
107		.channels_max = 8,
108		.rate_min = 8000,
109		.rate_max = 48000,
110	},
111	.ops = &asoc_acp_cpu_dai_ops,
112},
113{
114	.name = "acp-pdm-dmic",
115	.id = DMIC_INSTANCE,
116	.capture = {
117		.rates = SNDRV_PCM_RATE_8000_48000,
118		.formats = SNDRV_PCM_FMTBIT_S32_LE,
119		.channels_min = 2,
120		.channels_max = 2,
121		.rate_min = 8000,
122		.rate_max = 48000,
123	},
124	.ops = &acp_dmic_dai_ops,
125},
126};
127
128static int acp6x_master_clock_generate(struct device *dev)
129{
130	int data, rc;
131
132	rc = amd_smn_write(0, MP1_C2PMSG_93, 0);
133	if (rc)
134		return rc;
135	rc = amd_smn_write(0, MP1_C2PMSG_85, 0xC4);
136	if (rc)
137		return rc;
138	rc = amd_smn_write(0, MP1_C2PMSG_69, 0x4);
139	if (rc)
140		return rc;
141
142	return read_poll_timeout(smn_read_register, data, data > 0, DELAY_US,
143				 ACP_TIMEOUT, false, MP1_C2PMSG_93);
144}
145
146static int rembrandt_audio_probe(struct platform_device *pdev)
147{
148	struct device *dev = &pdev->dev;
149	struct acp_chip_info *chip;
150	int ret;
151
152	chip = dev_get_platdata(&pdev->dev);
153	if (!chip || !chip->base) {
154		dev_err(&pdev->dev, "ACP chip data is NULL\n");
155		return -ENODEV;
156	}
157
158	if (chip->acp_rev != ACP_RMB_PCI_ID) {
159		dev_err(&pdev->dev, "Un-supported ACP Revision %d\n", chip->acp_rev);
160		return -ENODEV;
161	}
162
163	chip->dev = dev;
164	chip->dai_driver = acp_rmb_dai;
165	chip->num_dai = ARRAY_SIZE(acp_rmb_dai);
166
167	if (chip->is_i2s_config && chip->rsrc->soc_mclk) {
168		ret = acp6x_master_clock_generate(dev);
169		if (ret)
170			return ret;
171	}
172	ret = acp_hw_en_interrupts(chip);
173	if (ret) {
174		dev_err(dev, "ACP en-interrupts failed\n");
175		return ret;
176	}
177	acp_platform_register(dev);
178	pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
179	pm_runtime_use_autosuspend(&pdev->dev);
180	pm_runtime_mark_last_busy(&pdev->dev);
181	pm_runtime_set_active(&pdev->dev);
182	pm_runtime_enable(&pdev->dev);
183	return 0;
184}
185
186static void rembrandt_audio_remove(struct platform_device *pdev)
187{
188	struct device *dev = &pdev->dev;
189	struct acp_chip_info *chip = dev_get_platdata(dev);
190	int ret;
191
192	ret = acp_hw_dis_interrupts(chip);
193	if (ret)
194		dev_err(dev, "ACP dis-interrupts failed\n");
195
196	acp_platform_unregister(dev);
197	pm_runtime_disable(&pdev->dev);
198}
199
200static int rmb_pcm_resume(struct device *dev)
201{
202	struct acp_chip_info *chip = dev_get_drvdata(dev->parent);
203	struct acp_stream *stream;
204	struct snd_pcm_substream *substream;
205	snd_pcm_uframes_t buf_in_frames;
206	u64 buf_size;
207
208	if (chip->is_i2s_config && chip->rsrc->soc_mclk)
209		acp6x_master_clock_generate(dev);
210
211	spin_lock(&chip->acp_lock);
212	list_for_each_entry(stream, &chip->stream_list, list) {
213		substream = stream->substream;
214		if (substream && substream->runtime) {
215			buf_in_frames = (substream->runtime->buffer_size);
216			buf_size = frames_to_bytes(substream->runtime, buf_in_frames);
217			config_pte_for_stream(chip, stream);
218			config_acp_dma(chip, stream, buf_size);
219			if (stream->dai_id)
220				restore_acp_i2s_params(substream, chip, stream);
221			else
222				restore_acp_pdm_params(substream, chip);
223		}
224	}
225	spin_unlock(&chip->acp_lock);
226	return 0;
227}
228
229static const struct dev_pm_ops rmb_dma_pm_ops = {
230	SYSTEM_SLEEP_PM_OPS(NULL, rmb_pcm_resume)
231};
232
233static struct platform_driver rembrandt_driver = {
234	.probe = rembrandt_audio_probe,
235	.remove = rembrandt_audio_remove,
236	.driver = {
237		.name = "acp_asoc_rembrandt",
238		.pm = pm_ptr(&rmb_dma_pm_ops),
239	},
240};
241
242module_platform_driver(rembrandt_driver);
243
244MODULE_DESCRIPTION("AMD ACP Rembrandt Driver");
245MODULE_IMPORT_NS("SND_SOC_ACP_COMMON");
246MODULE_LICENSE("Dual BSD/GPL");
247MODULE_ALIAS("platform:" DRV_NAME);