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
33 static 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
acp_acp70_audio_probe(struct platform_device * pdev)124 static 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 break;
140 default:
141 dev_err(&pdev->dev, "Un-supported ACP Revision %d\n", chip->acp_rev);
142 return -ENODEV;
143 }
144
145 chip->dev = dev;
146 chip->dai_driver = acp70_dai;
147 chip->num_dai = ARRAY_SIZE(acp70_dai);
148
149 /* Set clk7 DFS clock divider register value to get mclk as 196.608MHz*/
150 ret = amd_smn_write(0, CLK7_CLK0_DFS_CNTL_N1, CLK0_DIVIDER);
151 if (ret) {
152 dev_err(&pdev->dev, "Failed to set I2S master clock as 196.608MHz\n");
153 return ret;
154 }
155 ret = acp_hw_en_interrupts(chip);
156 if (ret) {
157 dev_err(dev, "ACP en-interrupts failed\n");
158 return ret;
159 }
160 acp_platform_register(dev);
161 pm_runtime_set_autosuspend_delay(&pdev->dev, ACP_SUSPEND_DELAY_MS);
162 pm_runtime_use_autosuspend(&pdev->dev);
163 pm_runtime_mark_last_busy(&pdev->dev);
164 pm_runtime_set_active(&pdev->dev);
165 pm_runtime_enable(&pdev->dev);
166 return 0;
167 }
168
acp_acp70_audio_remove(struct platform_device * pdev)169 static void acp_acp70_audio_remove(struct platform_device *pdev)
170 {
171 struct device *dev = &pdev->dev;
172 struct acp_chip_info *chip = dev_get_platdata(dev);
173 int ret;
174
175 ret = acp_hw_dis_interrupts(chip);
176 if (ret)
177 dev_err(dev, "ACP dis-interrupts failed\n");
178
179 acp_platform_unregister(dev);
180 pm_runtime_disable(&pdev->dev);
181 }
182
acp70_pcm_resume(struct device * dev)183 static int acp70_pcm_resume(struct device *dev)
184 {
185 struct acp_chip_info *chip = dev_get_drvdata(dev->parent);
186 struct acp_stream *stream;
187 struct snd_pcm_substream *substream;
188 snd_pcm_uframes_t buf_in_frames;
189 u64 buf_size;
190
191 spin_lock(&chip->acp_lock);
192 list_for_each_entry(stream, &chip->stream_list, list) {
193 substream = stream->substream;
194 if (substream && substream->runtime) {
195 buf_in_frames = (substream->runtime->buffer_size);
196 buf_size = frames_to_bytes(substream->runtime, buf_in_frames);
197 config_pte_for_stream(chip, stream);
198 config_acp_dma(chip, stream, buf_size);
199 if (stream->dai_id)
200 restore_acp_i2s_params(substream, chip, stream);
201 else
202 restore_acp_pdm_params(substream, chip);
203 }
204 }
205 spin_unlock(&chip->acp_lock);
206 return 0;
207 }
208
209 static const struct dev_pm_ops acp70_dma_pm_ops = {
210 SYSTEM_SLEEP_PM_OPS(NULL, acp70_pcm_resume)
211 };
212
213 static struct platform_driver acp70_driver = {
214 .probe = acp_acp70_audio_probe,
215 .remove = acp_acp70_audio_remove,
216 .driver = {
217 .name = "acp_asoc_acp70",
218 .pm = pm_ptr(&acp70_dma_pm_ops),
219 },
220 };
221
222 module_platform_driver(acp70_driver);
223
224 MODULE_DESCRIPTION("AMD ACP ACP70 Driver");
225 MODULE_IMPORT_NS("SND_SOC_ACP_COMMON");
226 MODULE_LICENSE("Dual BSD/GPL");
227 MODULE_ALIAS("platform:" DRV_NAME);
228