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#define DRV_NAME "acp_asoc_acp70"
27
28static struct acp_resource rsrc = {
29	.offset = 0,
30	.no_of_ctrls = 2,
31	.irqp_used = 1,
32	.soc_mclk = true,
33	.irq_reg_offset = 0x1a00,
34	.i2s_pin_cfg_offset = 0x1440,
35	.i2s_mode = 0x0a,
36	.scratch_reg_offset = 0x12800,
37	.sram_pte_offset = 0x03802800,
38};
39
40static struct snd_soc_acpi_mach snd_soc_acpi_amd_acp70_acp_machines[] = {
41	{
42		.id = "AMDI0029",
43		.drv_name = "acp70-acp",
44	},
45	{},
46};
47
48static struct snd_soc_dai_driver acp70_dai[] = {
49{
50	.name = "acp-i2s-sp",
51	.id = I2S_SP_INSTANCE,
52	.playback = {
53		.stream_name = "I2S SP Playback",
54		.rates = SNDRV_PCM_RATE_8000_96000,
55		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
56			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
57		.channels_min = 2,
58		.channels_max = 8,
59		.rate_min = 8000,
60		.rate_max = 96000,
61	},
62	.capture = {
63		.stream_name = "I2S SP Capture",
64		.rates = SNDRV_PCM_RATE_8000_48000,
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 = 2,
69		.rate_min = 8000,
70		.rate_max = 48000,
71	},
72	.ops = &asoc_acp_cpu_dai_ops,
73},
74{
75	.name = "acp-i2s-bt",
76	.id = I2S_BT_INSTANCE,
77	.playback = {
78		.stream_name = "I2S BT Playback",
79		.rates = SNDRV_PCM_RATE_8000_96000,
80		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
81			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
82		.channels_min = 2,
83		.channels_max = 8,
84		.rate_min = 8000,
85		.rate_max = 96000,
86	},
87	.capture = {
88		.stream_name = "I2S BT Capture",
89		.rates = SNDRV_PCM_RATE_8000_48000,
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 = 2,
94		.rate_min = 8000,
95		.rate_max = 48000,
96	},
97	.ops = &asoc_acp_cpu_dai_ops,
98},
99{
100	.name = "acp-i2s-hs",
101	.id = I2S_HS_INSTANCE,
102	.playback = {
103		.stream_name = "I2S HS Playback",
104		.rates = SNDRV_PCM_RATE_8000_96000,
105		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
106			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
107		.channels_min = 2,
108		.channels_max = 8,
109		.rate_min = 8000,
110		.rate_max = 96000,
111	},
112	.capture = {
113		.stream_name = "I2S HS Capture",
114		.rates = SNDRV_PCM_RATE_8000_48000,
115		.formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S8 |
116			   SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S32_LE,
117		.channels_min = 2,
118		.channels_max = 8,
119		.rate_min = 8000,
120		.rate_max = 48000,
121	},
122	.ops = &asoc_acp_cpu_dai_ops,
123},
124{
125	.name = "acp-pdm-dmic",
126	.id = DMIC_INSTANCE,
127	.capture = {
128		.rates = SNDRV_PCM_RATE_8000_48000,
129		.formats = SNDRV_PCM_FMTBIT_S32_LE,
130		.channels_min = 2,
131		.channels_max = 2,
132		.rate_min = 8000,
133		.rate_max = 48000,
134	},
135	.ops = &acp_dmic_dai_ops,
136},
137};
138
139static int acp_acp70_audio_probe(struct platform_device *pdev)
140{
141	struct device *dev = &pdev->dev;
142	struct acp_chip_info *chip;
143	struct acp_dev_data *adata;
144	struct resource *res;
145
146	chip = dev_get_platdata(&pdev->dev);
147	if (!chip || !chip->base) {
148		dev_err(&pdev->dev, "ACP chip data is NULL\n");
149		return -ENODEV;
150	}
151
152	if (chip->acp_rev != ACP70_DEV) {
153		dev_err(&pdev->dev, "Un-supported ACP Revision %d\n", chip->acp_rev);
154		return -ENODEV;
155	}
156
157	adata = devm_kzalloc(dev, sizeof(struct acp_dev_data), GFP_KERNEL);
158	if (!adata)
159		return -ENOMEM;
160
161	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "acp_mem");
162	if (!res) {
163		dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
164		return -ENODEV;
165	}
166
167	adata->acp_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
168	if (!adata->acp_base)
169		return -ENOMEM;
170
171	res = platform_get_resource_byname(pdev, IORESOURCE_IRQ, "acp_dai_irq");
172	if (!res) {
173		dev_err(&pdev->dev, "IORESOURCE_IRQ FAILED\n");
174		return -ENODEV;
175	}
176
177	adata->i2s_irq = res->start;
178	adata->dev = dev;
179	adata->dai_driver = acp70_dai;
180	adata->num_dai = ARRAY_SIZE(acp70_dai);
181	adata->rsrc = &rsrc;
182	adata->machines = snd_soc_acpi_amd_acp70_acp_machines;
183	adata->platform = ACP70;
184	adata->flag = chip->flag;
185	acp_machine_select(adata);
186
187	dev_set_drvdata(dev, adata);
188	acp_enable_interrupts(adata);
189	acp_platform_register(dev);
190	pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
191	pm_runtime_use_autosuspend(&pdev->dev);
192	pm_runtime_mark_last_busy(&pdev->dev);
193	pm_runtime_set_active(&pdev->dev);
194	pm_runtime_enable(&pdev->dev);
195	return 0;
196}
197
198static void acp_acp70_audio_remove(struct platform_device *pdev)
199{
200	struct device *dev = &pdev->dev;
201	struct acp_dev_data *adata = dev_get_drvdata(dev);
202
203	acp_disable_interrupts(adata);
204	acp_platform_unregister(dev);
205	pm_runtime_disable(&pdev->dev);
206}
207
208static int __maybe_unused acp70_pcm_resume(struct device *dev)
209{
210	struct acp_dev_data *adata = dev_get_drvdata(dev);
211	struct acp_stream *stream;
212	struct snd_pcm_substream *substream;
213	snd_pcm_uframes_t buf_in_frames;
214	u64 buf_size;
215
216	spin_lock(&adata->acp_lock);
217	list_for_each_entry(stream, &adata->stream_list, list) {
218		if (stream) {
219			substream = stream->substream;
220			if (substream && substream->runtime) {
221				buf_in_frames = (substream->runtime->buffer_size);
222				buf_size = frames_to_bytes(substream->runtime, buf_in_frames);
223				config_pte_for_stream(adata, stream);
224				config_acp_dma(adata, stream, buf_size);
225				if (stream->dai_id)
226					restore_acp_i2s_params(substream, adata, stream);
227				else
228					restore_acp_pdm_params(substream, adata);
229			}
230		}
231	}
232	spin_unlock(&adata->acp_lock);
233	return 0;
234}
235
236static const struct dev_pm_ops acp70_dma_pm_ops = {
237	SET_SYSTEM_SLEEP_PM_OPS(NULL, acp70_pcm_resume)
238};
239
240static struct platform_driver acp70_driver = {
241	.probe = acp_acp70_audio_probe,
242	.remove_new = acp_acp70_audio_remove,
243	.driver = {
244		.name = "acp_asoc_acp70",
245		.pm = &acp70_dma_pm_ops,
246	},
247};
248
249module_platform_driver(acp70_driver);
250
251MODULE_DESCRIPTION("AMD ACP ACP70 Driver");
252MODULE_IMPORT_NS(SND_SOC_ACP_COMMON);
253MODULE_LICENSE("Dual BSD/GPL");
254MODULE_ALIAS("platform:" DRV_NAME);
255