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) 2021 Advanced Micro Devices, Inc.
7 //
8 // Authors: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
9 //
10
11 /*
12 * Hardware interface for Renoir ACP block
13 */
14
15 #include <linux/platform_device.h>
16 #include <linux/module.h>
17 #include <linux/err.h>
18 #include <linux/io.h>
19 #include <sound/pcm_params.h>
20 #include <sound/soc.h>
21 #include <sound/soc-dai.h>
22 #include <linux/dma-mapping.h>
23
24 #include "amd.h"
25
26 #define DRV_NAME "acp_asoc_renoir"
27
28 #define ACP_SOFT_RST_DONE_MASK 0x00010001
29
30 #define ACP_PWR_ON_MASK 0x01
31 #define ACP_PWR_OFF_MASK 0x00
32 #define ACP_PGFSM_STAT_MASK 0x03
33 #define ACP_POWERED_ON 0x00
34 #define ACP_PWR_ON_IN_PROGRESS 0x01
35 #define ACP_POWERED_OFF 0x02
36 #define DELAY_US 5
37 #define ACP_TIMEOUT 500
38
39 #define ACP_ERROR_MASK 0x20000000
40 #define ACP_EXT_INTR_STAT_CLEAR_MASK 0xFFFFFFFF
41
42 static struct snd_soc_acpi_codecs amp_rt1019 = {
43 .num_codecs = 1,
44 .codecs = {"10EC1019"}
45 };
46
47 static struct snd_soc_acpi_codecs amp_max = {
48 .num_codecs = 1,
49 .codecs = {"MX98360A"}
50 };
51
52 static struct snd_soc_acpi_mach snd_soc_acpi_amd_acp_machines[] = {
53 {
54 .id = "10EC5682",
55 .drv_name = "acp3xalc56821019",
56 .machine_quirk = snd_soc_acpi_codec_list,
57 .quirk_data = &_rt1019,
58 },
59 {
60 .id = "RTL5682",
61 .drv_name = "acp3xalc5682sm98360",
62 .machine_quirk = snd_soc_acpi_codec_list,
63 .quirk_data = &_max,
64 },
65 {
66 .id = "RTL5682",
67 .drv_name = "acp3xalc5682s1019",
68 .machine_quirk = snd_soc_acpi_codec_list,
69 .quirk_data = &_rt1019,
70 },
71 {
72 .id = "AMDI1019",
73 .drv_name = "renoir-acp",
74 },
75 {},
76 };
77
78 static struct snd_soc_dai_driver acp_renoir_dai[] = {
79 {
80 .name = "acp-i2s-sp",
81 .id = I2S_SP_INSTANCE,
82 .playback = {
83 .stream_name = "I2S SP Playback",
84 .rates = SNDRV_PCM_RATE_8000_96000,
85 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
86 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
87 .channels_min = 2,
88 .channels_max = 8,
89 .rate_min = 8000,
90 .rate_max = 96000,
91 },
92 .capture = {
93 .stream_name = "I2S SP Capture",
94 .rates = SNDRV_PCM_RATE_8000_48000,
95 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
96 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
97 .channels_min = 2,
98 .channels_max = 2,
99 .rate_min = 8000,
100 .rate_max = 48000,
101 },
102 .ops = &asoc_acp_cpu_dai_ops,
103 .probe = &asoc_acp_i2s_probe,
104 },
105 {
106 .name = "acp-i2s-bt",
107 .id = I2S_BT_INSTANCE,
108 .playback = {
109 .stream_name = "I2S BT Playback",
110 .rates = SNDRV_PCM_RATE_8000_96000,
111 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
112 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
113 .channels_min = 2,
114 .channels_max = 8,
115 .rate_min = 8000,
116 .rate_max = 96000,
117 },
118 .capture = {
119 .stream_name = "I2S BT Capture",
120 .rates = SNDRV_PCM_RATE_8000_48000,
121 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
122 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
123 .channels_min = 2,
124 .channels_max = 2,
125 .rate_min = 8000,
126 .rate_max = 48000,
127 },
128 .ops = &asoc_acp_cpu_dai_ops,
129 .probe = &asoc_acp_i2s_probe,
130 },
131 {
132 .name = "acp-pdm-dmic",
133 .id = DMIC_INSTANCE,
134 .capture = {
135 .rates = SNDRV_PCM_RATE_8000_48000,
136 .formats = SNDRV_PCM_FMTBIT_S32_LE,
137 .channels_min = 2,
138 .channels_max = 2,
139 .rate_min = 8000,
140 .rate_max = 48000,
141 },
142 .ops = &acp_dmic_dai_ops,
143 },
144 };
145
acp3x_power_on(void __iomem * base)146 static int acp3x_power_on(void __iomem *base)
147 {
148 u32 val;
149
150 val = readl(base + ACP_PGFSM_STATUS);
151
152 if (val == ACP_POWERED_ON)
153 return 0;
154
155 if ((val & ACP_PGFSM_STAT_MASK) != ACP_PWR_ON_IN_PROGRESS)
156 writel(ACP_PWR_ON_MASK, base + ACP_PGFSM_CONTROL);
157
158 return readl_poll_timeout(base + ACP_PGFSM_STATUS, val, !val, DELAY_US, ACP_TIMEOUT);
159 }
160
acp3x_power_off(void __iomem * base)161 static int acp3x_power_off(void __iomem *base)
162 {
163 u32 val;
164
165 writel(ACP_PWR_OFF_MASK, base + ACP_PGFSM_CONTROL);
166
167 return readl_poll_timeout(base + ACP_PGFSM_STATUS, val,
168 (val & ACP_PGFSM_STAT_MASK) == ACP_POWERED_OFF,
169 DELAY_US, ACP_TIMEOUT);
170 }
171
acp3x_reset(void __iomem * base)172 static int acp3x_reset(void __iomem *base)
173 {
174 u32 val;
175 int ret;
176
177 writel(1, base + ACP_SOFT_RESET);
178
179 ret = readl_poll_timeout(base + ACP_SOFT_RESET, val, val & ACP_SOFT_RST_DONE_MASK,
180 DELAY_US, ACP_TIMEOUT);
181 if (ret)
182 return ret;
183
184 writel(0, base + ACP_SOFT_RESET);
185
186 return readl_poll_timeout(base + ACP_SOFT_RESET, val, !val, DELAY_US, ACP_TIMEOUT);
187 }
188
acp3x_enable_interrupts(void __iomem * base)189 static void acp3x_enable_interrupts(void __iomem *base)
190 {
191 u32 ext_intr_ctrl;
192
193 writel(0x01, base + ACP_EXTERNAL_INTR_ENB);
194 ext_intr_ctrl = readl(base + ACP_EXTERNAL_INTR_CNTL);
195 ext_intr_ctrl |= ACP_ERROR_MASK;
196 writel(ext_intr_ctrl, base + ACP_EXTERNAL_INTR_CNTL);
197 }
198
acp3x_disable_interrupts(void __iomem * base)199 static void acp3x_disable_interrupts(void __iomem *base)
200 {
201 writel(ACP_EXT_INTR_STAT_CLEAR_MASK, base + ACP_EXTERNAL_INTR_STAT);
202 writel(0x00, base + ACP_EXTERNAL_INTR_ENB);
203 }
204
rn_acp_init(void __iomem * base)205 static int rn_acp_init(void __iomem *base)
206 {
207 int ret;
208
209 /* power on */
210 ret = acp3x_power_on(base);
211 if (ret)
212 return ret;
213
214 writel(0x01, base + ACP_CONTROL);
215
216 /* Reset */
217 ret = acp3x_reset(base);
218 if (ret)
219 return ret;
220
221 acp3x_enable_interrupts(base);
222
223 return 0;
224 }
225
rn_acp_deinit(void __iomem * base)226 static int rn_acp_deinit(void __iomem *base)
227 {
228 int ret = 0;
229
230 acp3x_disable_interrupts(base);
231
232 /* Reset */
233 ret = acp3x_reset(base);
234 if (ret)
235 return ret;
236
237 writel(0x00, base + ACP_CONTROL);
238
239 /* power off */
240 ret = acp3x_power_off(base);
241 if (ret)
242 return ret;
243
244 return 0;
245 }
renoir_audio_probe(struct platform_device * pdev)246 static int renoir_audio_probe(struct platform_device *pdev)
247 {
248 struct device *dev = &pdev->dev;
249 struct acp_chip_info *chip;
250 struct acp_dev_data *adata;
251 struct resource *res;
252 int ret;
253
254 chip = dev_get_platdata(&pdev->dev);
255 if (!chip || !chip->base) {
256 dev_err(&pdev->dev, "ACP chip data is NULL\n");
257 return -ENODEV;
258 }
259
260 if (chip->acp_rev != ACP3X_DEV) {
261 dev_err(&pdev->dev, "Un-supported ACP Revision %d\n", chip->acp_rev);
262 return -ENODEV;
263 }
264
265 ret = rn_acp_init(chip->base);
266 if (ret) {
267 dev_err(&pdev->dev, "ACP Init failed\n");
268 return -EINVAL;
269 }
270
271 adata = devm_kzalloc(dev, sizeof(struct acp_dev_data), GFP_KERNEL);
272 if (!adata)
273 return -ENOMEM;
274
275 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "acp_mem");
276 if (!res) {
277 dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
278 return -ENODEV;
279 }
280
281 adata->acp_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
282 if (!adata->acp_base)
283 return -ENOMEM;
284
285 ret = platform_get_irq_byname(pdev, "acp_dai_irq");
286 if (ret < 0)
287 return ret;
288 adata->i2s_irq = ret;
289
290 adata->dev = dev;
291 adata->dai_driver = acp_renoir_dai;
292 adata->num_dai = ARRAY_SIZE(acp_renoir_dai);
293
294 adata->machines = snd_soc_acpi_amd_acp_machines;
295 acp_machine_select(adata);
296
297 dev_set_drvdata(dev, adata);
298 acp_platform_register(dev);
299
300 return 0;
301 }
302
renoir_audio_remove(struct platform_device * pdev)303 static int renoir_audio_remove(struct platform_device *pdev)
304 {
305 struct device *dev = &pdev->dev;
306 struct acp_chip_info *chip;
307 int ret;
308
309 chip = dev_get_platdata(&pdev->dev);
310 if (!chip || !chip->base) {
311 dev_err(&pdev->dev, "ACP chip data is NULL\n");
312 return -ENODEV;
313 }
314
315 ret = rn_acp_deinit(chip->base);
316 if (ret) {
317 dev_err(&pdev->dev, "ACP de-init Failed\n");
318 return -EINVAL;
319 }
320
321 acp_platform_unregister(dev);
322 return 0;
323 }
324
325 static struct platform_driver renoir_driver = {
326 .probe = renoir_audio_probe,
327 .remove = renoir_audio_remove,
328 .driver = {
329 .name = "acp_asoc_renoir",
330 },
331 };
332
333 module_platform_driver(renoir_driver);
334
335 MODULE_DESCRIPTION("AMD ACP Renoir Driver");
336 MODULE_IMPORT_NS(SND_SOC_ACP_COMMON);
337 MODULE_LICENSE("Dual BSD/GPL");
338 MODULE_ALIAS("platform:" DRV_NAME);
339