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 acp_resource rsrc = {
43 .offset = 20,
44 .no_of_ctrls = 1,
45 .irqp_used = 0,
46 .irq_reg_offset = 0x1800,
47 .i2s_pin_cfg_offset = 0x1400,
48 .i2s_mode = 0x04,
49 .scratch_reg_offset = 0x12800,
50 .sram_pte_offset = 0x02052800,
51 };
52
53 static struct snd_soc_acpi_codecs amp_rt1019 = {
54 .num_codecs = 1,
55 .codecs = {"10EC1019"}
56 };
57
58 static struct snd_soc_acpi_codecs amp_max = {
59 .num_codecs = 1,
60 .codecs = {"MX98360A"}
61 };
62
63 static struct snd_soc_acpi_mach snd_soc_acpi_amd_acp_machines[] = {
64 {
65 .id = "10EC5682",
66 .drv_name = "acp3xalc56821019",
67 .machine_quirk = snd_soc_acpi_codec_list,
68 .quirk_data = &_rt1019,
69 },
70 {
71 .id = "RTL5682",
72 .drv_name = "acp3xalc5682sm98360",
73 .machine_quirk = snd_soc_acpi_codec_list,
74 .quirk_data = &_max,
75 },
76 {
77 .id = "RTL5682",
78 .drv_name = "acp3xalc5682s1019",
79 .machine_quirk = snd_soc_acpi_codec_list,
80 .quirk_data = &_rt1019,
81 },
82 {
83 .id = "AMDI1019",
84 .drv_name = "renoir-acp",
85 },
86 {},
87 };
88
89 static struct snd_soc_dai_driver acp_renoir_dai[] = {
90 {
91 .name = "acp-i2s-sp",
92 .id = I2S_SP_INSTANCE,
93 .playback = {
94 .stream_name = "I2S SP Playback",
95 .rates = SNDRV_PCM_RATE_8000_96000,
96 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
97 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
98 .channels_min = 2,
99 .channels_max = 8,
100 .rate_min = 8000,
101 .rate_max = 96000,
102 },
103 .capture = {
104 .stream_name = "I2S SP Capture",
105 .rates = SNDRV_PCM_RATE_8000_48000,
106 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
107 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
108 .channels_min = 2,
109 .channels_max = 2,
110 .rate_min = 8000,
111 .rate_max = 48000,
112 },
113 .ops = &asoc_acp_cpu_dai_ops,
114 .probe = &asoc_acp_i2s_probe,
115 },
116 {
117 .name = "acp-i2s-bt",
118 .id = I2S_BT_INSTANCE,
119 .playback = {
120 .stream_name = "I2S BT Playback",
121 .rates = SNDRV_PCM_RATE_8000_96000,
122 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
123 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
124 .channels_min = 2,
125 .channels_max = 8,
126 .rate_min = 8000,
127 .rate_max = 96000,
128 },
129 .capture = {
130 .stream_name = "I2S BT Capture",
131 .rates = SNDRV_PCM_RATE_8000_48000,
132 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8 |
133 SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S32_LE,
134 .channels_min = 2,
135 .channels_max = 2,
136 .rate_min = 8000,
137 .rate_max = 48000,
138 },
139 .ops = &asoc_acp_cpu_dai_ops,
140 .probe = &asoc_acp_i2s_probe,
141 },
142 {
143 .name = "acp-pdm-dmic",
144 .id = DMIC_INSTANCE,
145 .capture = {
146 .rates = SNDRV_PCM_RATE_8000_48000,
147 .formats = SNDRV_PCM_FMTBIT_S32_LE,
148 .channels_min = 2,
149 .channels_max = 2,
150 .rate_min = 8000,
151 .rate_max = 48000,
152 },
153 .ops = &acp_dmic_dai_ops,
154 },
155 };
156
acp3x_power_on(void __iomem * base)157 static int acp3x_power_on(void __iomem *base)
158 {
159 u32 val;
160
161 val = readl(base + ACP_PGFSM_STATUS);
162
163 if (val == ACP_POWERED_ON)
164 return 0;
165
166 if ((val & ACP_PGFSM_STAT_MASK) != ACP_PWR_ON_IN_PROGRESS)
167 writel(ACP_PWR_ON_MASK, base + ACP_PGFSM_CONTROL);
168
169 return readl_poll_timeout(base + ACP_PGFSM_STATUS, val, !val, DELAY_US, ACP_TIMEOUT);
170 }
171
acp3x_power_off(void __iomem * base)172 static int acp3x_power_off(void __iomem *base)
173 {
174 u32 val;
175
176 writel(ACP_PWR_OFF_MASK, base + ACP_PGFSM_CONTROL);
177
178 return readl_poll_timeout(base + ACP_PGFSM_STATUS, val,
179 (val & ACP_PGFSM_STAT_MASK) == ACP_POWERED_OFF,
180 DELAY_US, ACP_TIMEOUT);
181 }
182
acp3x_reset(void __iomem * base)183 static int acp3x_reset(void __iomem *base)
184 {
185 u32 val;
186 int ret;
187
188 writel(1, base + ACP_SOFT_RESET);
189
190 ret = readl_poll_timeout(base + ACP_SOFT_RESET, val, val & ACP_SOFT_RST_DONE_MASK,
191 DELAY_US, ACP_TIMEOUT);
192 if (ret)
193 return ret;
194
195 writel(0, base + ACP_SOFT_RESET);
196
197 return readl_poll_timeout(base + ACP_SOFT_RESET, val, !val, DELAY_US, ACP_TIMEOUT);
198 }
199
acp3x_enable_interrupts(struct acp_dev_data * adata)200 static void acp3x_enable_interrupts(struct acp_dev_data *adata)
201 {
202 struct acp_resource *rsrc = adata->rsrc;
203 u32 ext_intr_ctrl;
204
205 writel(0x01, ACP_EXTERNAL_INTR_ENB(adata));
206 ext_intr_ctrl = readl(ACP_EXTERNAL_INTR_CNTL(adata, rsrc->irqp_used));
207 ext_intr_ctrl |= ACP_ERROR_MASK;
208 writel(ext_intr_ctrl, ACP_EXTERNAL_INTR_CNTL(adata, rsrc->irqp_used));
209 }
210
acp3x_disable_interrupts(struct acp_dev_data * adata)211 static void acp3x_disable_interrupts(struct acp_dev_data *adata)
212 {
213 struct acp_resource *rsrc = adata->rsrc;
214
215 writel(ACP_EXT_INTR_STAT_CLEAR_MASK,
216 ACP_EXTERNAL_INTR_STAT(adata, rsrc->irqp_used));
217 writel(0x00, ACP_EXTERNAL_INTR_ENB(adata));
218 }
219
rn_acp_init(void __iomem * base)220 static int rn_acp_init(void __iomem *base)
221 {
222 int ret;
223
224 /* power on */
225 ret = acp3x_power_on(base);
226 if (ret)
227 return ret;
228
229 writel(0x01, base + ACP_CONTROL);
230
231 /* Reset */
232 ret = acp3x_reset(base);
233 if (ret)
234 return ret;
235
236 return 0;
237 }
238
rn_acp_deinit(void __iomem * base)239 static int rn_acp_deinit(void __iomem *base)
240 {
241 int ret = 0;
242
243 /* Reset */
244 ret = acp3x_reset(base);
245 if (ret)
246 return ret;
247
248 writel(0x00, base + ACP_CONTROL);
249
250 /* power off */
251 ret = acp3x_power_off(base);
252 if (ret)
253 return ret;
254
255 return 0;
256 }
renoir_audio_probe(struct platform_device * pdev)257 static int renoir_audio_probe(struct platform_device *pdev)
258 {
259 struct device *dev = &pdev->dev;
260 struct acp_chip_info *chip;
261 struct acp_dev_data *adata;
262 struct resource *res;
263 int ret;
264
265 chip = dev_get_platdata(&pdev->dev);
266 if (!chip || !chip->base) {
267 dev_err(&pdev->dev, "ACP chip data is NULL\n");
268 return -ENODEV;
269 }
270
271 if (chip->acp_rev != ACP3X_DEV) {
272 dev_err(&pdev->dev, "Un-supported ACP Revision %d\n", chip->acp_rev);
273 return -ENODEV;
274 }
275
276 ret = rn_acp_init(chip->base);
277 if (ret) {
278 dev_err(&pdev->dev, "ACP Init failed\n");
279 return -EINVAL;
280 }
281
282 adata = devm_kzalloc(dev, sizeof(struct acp_dev_data), GFP_KERNEL);
283 if (!adata)
284 return -ENOMEM;
285
286 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "acp_mem");
287 if (!res) {
288 dev_err(&pdev->dev, "IORESOURCE_MEM FAILED\n");
289 return -ENODEV;
290 }
291
292 adata->acp_base = devm_ioremap(&pdev->dev, res->start, resource_size(res));
293 if (!adata->acp_base)
294 return -ENOMEM;
295
296 ret = platform_get_irq_byname(pdev, "acp_dai_irq");
297 if (ret < 0)
298 return ret;
299 adata->i2s_irq = ret;
300
301 adata->dev = dev;
302 adata->dai_driver = acp_renoir_dai;
303 adata->num_dai = ARRAY_SIZE(acp_renoir_dai);
304 adata->rsrc = &rsrc;
305
306 adata->machines = snd_soc_acpi_amd_acp_machines;
307 acp_machine_select(adata);
308
309 dev_set_drvdata(dev, adata);
310 acp3x_enable_interrupts(adata);
311 acp_platform_register(dev);
312
313 return 0;
314 }
315
renoir_audio_remove(struct platform_device * pdev)316 static int renoir_audio_remove(struct platform_device *pdev)
317 {
318 struct device *dev = &pdev->dev;
319 struct acp_dev_data *adata = dev_get_drvdata(dev);
320 struct acp_chip_info *chip;
321 int ret;
322
323 chip = dev_get_platdata(&pdev->dev);
324
325 acp3x_disable_interrupts(adata);
326
327 ret = rn_acp_deinit(chip->base);
328 if (ret)
329 dev_err(&pdev->dev, "ACP de-init Failed (%pe)\n", ERR_PTR(ret));
330
331 acp_platform_unregister(dev);
332 return 0;
333 }
334
335 static struct platform_driver renoir_driver = {
336 .probe = renoir_audio_probe,
337 .remove = renoir_audio_remove,
338 .driver = {
339 .name = "acp_asoc_renoir",
340 },
341 };
342
343 module_platform_driver(renoir_driver);
344
345 MODULE_DESCRIPTION("AMD ACP Renoir Driver");
346 MODULE_IMPORT_NS(SND_SOC_ACP_COMMON);
347 MODULE_LICENSE("Dual BSD/GPL");
348 MODULE_ALIAS("platform:" DRV_NAME);
349