pci-ps.c (d93618da6b6d453c6a9684a3460ffd51b9b4ef2e) pci-ps.c (4b19211435950a78af032c26ad64a5268e6012be)
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * AMD Pink Sardine ACP PCI Driver
4 *
5 * Copyright 2022 Advanced Micro Devices, Inc.
6 */
7
8#include <linux/pci.h>
9#include <linux/module.h>
10#include <linux/io.h>
11#include <linux/delay.h>
12#include <linux/platform_device.h>
13#include <linux/acpi.h>
14#include <linux/interrupt.h>
15#include <sound/pcm_params.h>
16#include <linux/pm_runtime.h>
17
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * AMD Pink Sardine ACP PCI Driver
4 *
5 * Copyright 2022 Advanced Micro Devices, Inc.
6 */
7
8#include <linux/pci.h>
9#include <linux/module.h>
10#include <linux/io.h>
11#include <linux/delay.h>
12#include <linux/platform_device.h>
13#include <linux/acpi.h>
14#include <linux/interrupt.h>
15#include <sound/pcm_params.h>
16#include <linux/pm_runtime.h>
17
18#include "acp62.h"
18#include "acp63.h"
19
19
20struct acp62_dev_data {
21 void __iomem *acp62_base;
20struct acp63_dev_data {
21 void __iomem *acp63_base;
22 struct resource *res;
22 struct resource *res;
23 bool acp62_audio_mode;
23 bool acp63_audio_mode;
24 struct platform_device *pdev[ACP6x_DEVS];
25};
26
24 struct platform_device *pdev[ACP6x_DEVS];
25};
26
27static int acp62_power_on(void __iomem *acp_base)
27static int acp63_power_on(void __iomem *acp_base)
28{
29 u32 val;
30 int timeout;
31
28{
29 u32 val;
30 int timeout;
31
32 val = acp62_readl(acp_base + ACP_PGFSM_STATUS);
32 val = acp63_readl(acp_base + ACP_PGFSM_STATUS);
33
34 if (!val)
35 return val;
36
37 if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS)
33
34 if (!val)
35 return val;
36
37 if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS)
38 acp62_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);
38 acp63_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);
39 timeout = 0;
40 while (++timeout < 500) {
39 timeout = 0;
40 while (++timeout < 500) {
41 val = acp62_readl(acp_base + ACP_PGFSM_STATUS);
41 val = acp63_readl(acp_base + ACP_PGFSM_STATUS);
42 if (!val)
43 return 0;
44 udelay(1);
45 }
46 return -ETIMEDOUT;
47}
48
42 if (!val)
43 return 0;
44 udelay(1);
45 }
46 return -ETIMEDOUT;
47}
48
49static int acp62_reset(void __iomem *acp_base)
49static int acp63_reset(void __iomem *acp_base)
50{
51 u32 val;
52 int timeout;
53
50{
51 u32 val;
52 int timeout;
53
54 acp62_writel(1, acp_base + ACP_SOFT_RESET);
54 acp63_writel(1, acp_base + ACP_SOFT_RESET);
55 timeout = 0;
56 while (++timeout < 500) {
55 timeout = 0;
56 while (++timeout < 500) {
57 val = acp62_readl(acp_base + ACP_SOFT_RESET);
57 val = acp63_readl(acp_base + ACP_SOFT_RESET);
58 if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
59 break;
60 cpu_relax();
61 }
58 if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
59 break;
60 cpu_relax();
61 }
62 acp62_writel(0, acp_base + ACP_SOFT_RESET);
62 acp63_writel(0, acp_base + ACP_SOFT_RESET);
63 timeout = 0;
64 while (++timeout < 500) {
63 timeout = 0;
64 while (++timeout < 500) {
65 val = acp62_readl(acp_base + ACP_SOFT_RESET);
65 val = acp63_readl(acp_base + ACP_SOFT_RESET);
66 if (!val)
67 return 0;
68 cpu_relax();
69 }
70 return -ETIMEDOUT;
71}
72
66 if (!val)
67 return 0;
68 cpu_relax();
69 }
70 return -ETIMEDOUT;
71}
72
73static void acp62_enable_interrupts(void __iomem *acp_base)
73static void acp63_enable_interrupts(void __iomem *acp_base)
74{
74{
75 acp62_writel(1, acp_base + ACP_EXTERNAL_INTR_ENB);
75 acp63_writel(1, acp_base + ACP_EXTERNAL_INTR_ENB);
76}
77
76}
77
78static void acp62_disable_interrupts(void __iomem *acp_base)
78static void acp63_disable_interrupts(void __iomem *acp_base)
79{
79{
80 acp62_writel(ACP_EXT_INTR_STAT_CLEAR_MASK, acp_base +
80 acp63_writel(ACP_EXT_INTR_STAT_CLEAR_MASK, acp_base +
81 ACP_EXTERNAL_INTR_STAT);
81 ACP_EXTERNAL_INTR_STAT);
82 acp62_writel(0, acp_base + ACP_EXTERNAL_INTR_CNTL);
83 acp62_writel(0, acp_base + ACP_EXTERNAL_INTR_ENB);
82 acp63_writel(0, acp_base + ACP_EXTERNAL_INTR_CNTL);
83 acp63_writel(0, acp_base + ACP_EXTERNAL_INTR_ENB);
84}
85
84}
85
86static int acp62_init(void __iomem *acp_base, struct device *dev)
86static int acp63_init(void __iomem *acp_base, struct device *dev)
87{
88 int ret;
89
87{
88 int ret;
89
90 ret = acp62_power_on(acp_base);
90 ret = acp63_power_on(acp_base);
91 if (ret) {
92 dev_err(dev, "ACP power on failed\n");
93 return ret;
94 }
91 if (ret) {
92 dev_err(dev, "ACP power on failed\n");
93 return ret;
94 }
95 acp62_writel(0x01, acp_base + ACP_CONTROL);
96 ret = acp62_reset(acp_base);
95 acp63_writel(0x01, acp_base + ACP_CONTROL);
96 ret = acp63_reset(acp_base);
97 if (ret) {
98 dev_err(dev, "ACP reset failed\n");
99 return ret;
100 }
97 if (ret) {
98 dev_err(dev, "ACP reset failed\n");
99 return ret;
100 }
101 acp62_writel(0x03, acp_base + ACP_CLKMUX_SEL);
102 acp62_enable_interrupts(acp_base);
101 acp63_writel(0x03, acp_base + ACP_CLKMUX_SEL);
102 acp63_enable_interrupts(acp_base);
103 return 0;
104}
105
103 return 0;
104}
105
106static int acp62_deinit(void __iomem *acp_base, struct device *dev)
106static int acp63_deinit(void __iomem *acp_base, struct device *dev)
107{
108 int ret;
109
107{
108 int ret;
109
110 acp62_disable_interrupts(acp_base);
111 ret = acp62_reset(acp_base);
110 acp63_disable_interrupts(acp_base);
111 ret = acp63_reset(acp_base);
112 if (ret) {
113 dev_err(dev, "ACP reset failed\n");
114 return ret;
115 }
112 if (ret) {
113 dev_err(dev, "ACP reset failed\n");
114 return ret;
115 }
116 acp62_writel(0, acp_base + ACP_CLKMUX_SEL);
117 acp62_writel(0, acp_base + ACP_CONTROL);
116 acp63_writel(0, acp_base + ACP_CLKMUX_SEL);
117 acp63_writel(0, acp_base + ACP_CONTROL);
118 return 0;
119}
120
118 return 0;
119}
120
121static irqreturn_t acp62_irq_handler(int irq, void *dev_id)
121static irqreturn_t acp63_irq_handler(int irq, void *dev_id)
122{
122{
123 struct acp62_dev_data *adata;
123 struct acp63_dev_data *adata;
124 struct pdm_dev_data *ps_pdm_data;
125 u32 val;
126
127 adata = dev_id;
128 if (!adata)
129 return IRQ_NONE;
130
124 struct pdm_dev_data *ps_pdm_data;
125 u32 val;
126
127 adata = dev_id;
128 if (!adata)
129 return IRQ_NONE;
130
131 val = acp62_readl(adata->acp62_base + ACP_EXTERNAL_INTR_STAT);
131 val = acp63_readl(adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
132 if (val & BIT(PDM_DMA_STAT)) {
133 ps_pdm_data = dev_get_drvdata(&adata->pdev[0]->dev);
132 if (val & BIT(PDM_DMA_STAT)) {
133 ps_pdm_data = dev_get_drvdata(&adata->pdev[0]->dev);
134 acp62_writel(BIT(PDM_DMA_STAT), adata->acp62_base + ACP_EXTERNAL_INTR_STAT);
134 acp63_writel(BIT(PDM_DMA_STAT), adata->acp63_base + ACP_EXTERNAL_INTR_STAT);
135 if (ps_pdm_data->capture_stream)
136 snd_pcm_period_elapsed(ps_pdm_data->capture_stream);
137 return IRQ_HANDLED;
138 }
139 return IRQ_NONE;
140}
141
135 if (ps_pdm_data->capture_stream)
136 snd_pcm_period_elapsed(ps_pdm_data->capture_stream);
137 return IRQ_HANDLED;
138 }
139 return IRQ_NONE;
140}
141
142static int snd_acp62_probe(struct pci_dev *pci,
142static int snd_acp63_probe(struct pci_dev *pci,
143 const struct pci_device_id *pci_id)
144{
143 const struct pci_device_id *pci_id)
144{
145 struct acp62_dev_data *adata;
145 struct acp63_dev_data *adata;
146 struct platform_device_info pdevinfo[ACP6x_DEVS];
147 int index, ret;
148 int val = 0x00;
149 struct acpi_device *adev;
150 const union acpi_object *obj;
151 u32 addr;
152 unsigned int irqflags;
153
154 irqflags = IRQF_SHARED;
155 /* Pink Sardine device check */
156 switch (pci->revision) {
157 case 0x63:
158 break;
159 default:
146 struct platform_device_info pdevinfo[ACP6x_DEVS];
147 int index, ret;
148 int val = 0x00;
149 struct acpi_device *adev;
150 const union acpi_object *obj;
151 u32 addr;
152 unsigned int irqflags;
153
154 irqflags = IRQF_SHARED;
155 /* Pink Sardine device check */
156 switch (pci->revision) {
157 case 0x63:
158 break;
159 default:
160 dev_dbg(&pci->dev, "acp62 pci device not found\n");
160 dev_dbg(&pci->dev, "acp63 pci device not found\n");
161 return -ENODEV;
162 }
163 if (pci_enable_device(pci)) {
164 dev_err(&pci->dev, "pci_enable_device failed\n");
165 return -ENODEV;
166 }
167
168 ret = pci_request_regions(pci, "AMD ACP6.2 audio");
169 if (ret < 0) {
170 dev_err(&pci->dev, "pci_request_regions failed\n");
171 goto disable_pci;
172 }
161 return -ENODEV;
162 }
163 if (pci_enable_device(pci)) {
164 dev_err(&pci->dev, "pci_enable_device failed\n");
165 return -ENODEV;
166 }
167
168 ret = pci_request_regions(pci, "AMD ACP6.2 audio");
169 if (ret < 0) {
170 dev_err(&pci->dev, "pci_request_regions failed\n");
171 goto disable_pci;
172 }
173 adata = devm_kzalloc(&pci->dev, sizeof(struct acp62_dev_data),
173 adata = devm_kzalloc(&pci->dev, sizeof(struct acp63_dev_data),
174 GFP_KERNEL);
175 if (!adata) {
176 ret = -ENOMEM;
177 goto release_regions;
178 }
179
180 addr = pci_resource_start(pci, 0);
174 GFP_KERNEL);
175 if (!adata) {
176 ret = -ENOMEM;
177 goto release_regions;
178 }
179
180 addr = pci_resource_start(pci, 0);
181 adata->acp62_base = devm_ioremap(&pci->dev, addr,
181 adata->acp63_base = devm_ioremap(&pci->dev, addr,
182 pci_resource_len(pci, 0));
182 pci_resource_len(pci, 0));
183 if (!adata->acp62_base) {
183 if (!adata->acp63_base) {
184 ret = -ENOMEM;
185 goto release_regions;
186 }
187 pci_set_master(pci);
188 pci_set_drvdata(pci, adata);
184 ret = -ENOMEM;
185 goto release_regions;
186 }
187 pci_set_master(pci);
188 pci_set_drvdata(pci, adata);
189 ret = acp62_init(adata->acp62_base, &pci->dev);
189 ret = acp63_init(adata->acp63_base, &pci->dev);
190 if (ret)
191 goto release_regions;
190 if (ret)
191 goto release_regions;
192 val = acp62_readl(adata->acp62_base + ACP_PIN_CONFIG);
192 val = acp63_readl(adata->acp63_base + ACP_PIN_CONFIG);
193 switch (val) {
194 case ACP_CONFIG_0:
195 case ACP_CONFIG_1:
196 case ACP_CONFIG_2:
197 case ACP_CONFIG_3:
198 case ACP_CONFIG_9:
199 case ACP_CONFIG_15:
200 dev_info(&pci->dev, "Audio Mode %d\n", val);

--- 14 unchanged lines hidden (view full) ---

215 ret = -ENOMEM;
216 goto de_init;
217 }
218
219 adata->res->name = "acp_iomem";
220 adata->res->flags = IORESOURCE_MEM;
221 adata->res->start = addr;
222 adata->res->end = addr + (ACP6x_REG_END - ACP6x_REG_START);
193 switch (val) {
194 case ACP_CONFIG_0:
195 case ACP_CONFIG_1:
196 case ACP_CONFIG_2:
197 case ACP_CONFIG_3:
198 case ACP_CONFIG_9:
199 case ACP_CONFIG_15:
200 dev_info(&pci->dev, "Audio Mode %d\n", val);

--- 14 unchanged lines hidden (view full) ---

215 ret = -ENOMEM;
216 goto de_init;
217 }
218
219 adata->res->name = "acp_iomem";
220 adata->res->flags = IORESOURCE_MEM;
221 adata->res->start = addr;
222 adata->res->end = addr + (ACP6x_REG_END - ACP6x_REG_START);
223 adata->acp62_audio_mode = ACP6x_PDM_MODE;
223 adata->acp63_audio_mode = ACP6x_PDM_MODE;
224
225 memset(&pdevinfo, 0, sizeof(pdevinfo));
226 pdevinfo[0].name = "acp_ps_pdm_dma";
227 pdevinfo[0].id = 0;
228 pdevinfo[0].parent = &pci->dev;
229 pdevinfo[0].num_res = 1;
230 pdevinfo[0].res = adata->res;
231

--- 11 unchanged lines hidden (view full) ---

243
244 if (IS_ERR(adata->pdev[index])) {
245 dev_err(&pci->dev,
246 "cannot register %s device\n",
247 pdevinfo[index].name);
248 ret = PTR_ERR(adata->pdev[index]);
249 goto unregister_devs;
250 }
224
225 memset(&pdevinfo, 0, sizeof(pdevinfo));
226 pdevinfo[0].name = "acp_ps_pdm_dma";
227 pdevinfo[0].id = 0;
228 pdevinfo[0].parent = &pci->dev;
229 pdevinfo[0].num_res = 1;
230 pdevinfo[0].res = adata->res;
231

--- 11 unchanged lines hidden (view full) ---

243
244 if (IS_ERR(adata->pdev[index])) {
245 dev_err(&pci->dev,
246 "cannot register %s device\n",
247 pdevinfo[index].name);
248 ret = PTR_ERR(adata->pdev[index]);
249 goto unregister_devs;
250 }
251 ret = devm_request_irq(&pci->dev, pci->irq, acp62_irq_handler,
251 ret = devm_request_irq(&pci->dev, pci->irq, acp63_irq_handler,
252 irqflags, "ACP_PCI_IRQ", adata);
253 if (ret) {
254 dev_err(&pci->dev, "ACP PCI IRQ request failed\n");
255 goto unregister_devs;
256 }
257 }
258 }
259 break;
260 }
261 pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
262 pm_runtime_use_autosuspend(&pci->dev);
263 pm_runtime_put_noidle(&pci->dev);
264 pm_runtime_allow(&pci->dev);
265 return 0;
266unregister_devs:
267 for (--index; index >= 0; index--)
268 platform_device_unregister(adata->pdev[index]);
269de_init:
252 irqflags, "ACP_PCI_IRQ", adata);
253 if (ret) {
254 dev_err(&pci->dev, "ACP PCI IRQ request failed\n");
255 goto unregister_devs;
256 }
257 }
258 }
259 break;
260 }
261 pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
262 pm_runtime_use_autosuspend(&pci->dev);
263 pm_runtime_put_noidle(&pci->dev);
264 pm_runtime_allow(&pci->dev);
265 return 0;
266unregister_devs:
267 for (--index; index >= 0; index--)
268 platform_device_unregister(adata->pdev[index]);
269de_init:
270 if (acp62_deinit(adata->acp62_base, &pci->dev))
270 if (acp63_deinit(adata->acp63_base, &pci->dev))
271 dev_err(&pci->dev, "ACP de-init failed\n");
272release_regions:
273 pci_release_regions(pci);
274disable_pci:
275 pci_disable_device(pci);
276
277 return ret;
278}
279
271 dev_err(&pci->dev, "ACP de-init failed\n");
272release_regions:
273 pci_release_regions(pci);
274disable_pci:
275 pci_disable_device(pci);
276
277 return ret;
278}
279
280static int __maybe_unused snd_acp62_suspend(struct device *dev)
280static int __maybe_unused snd_acp63_suspend(struct device *dev)
281{
281{
282 struct acp62_dev_data *adata;
282 struct acp63_dev_data *adata;
283 int ret;
284
285 adata = dev_get_drvdata(dev);
283 int ret;
284
285 adata = dev_get_drvdata(dev);
286 ret = acp62_deinit(adata->acp62_base, dev);
286 ret = acp63_deinit(adata->acp63_base, dev);
287 if (ret)
288 dev_err(dev, "ACP de-init failed\n");
289 return ret;
290}
291
287 if (ret)
288 dev_err(dev, "ACP de-init failed\n");
289 return ret;
290}
291
292static int __maybe_unused snd_acp62_resume(struct device *dev)
292static int __maybe_unused snd_acp63_resume(struct device *dev)
293{
293{
294 struct acp62_dev_data *adata;
294 struct acp63_dev_data *adata;
295 int ret;
296
297 adata = dev_get_drvdata(dev);
295 int ret;
296
297 adata = dev_get_drvdata(dev);
298 ret = acp62_init(adata->acp62_base, dev);
298 ret = acp63_init(adata->acp63_base, dev);
299 if (ret)
300 dev_err(dev, "ACP init failed\n");
301 return ret;
302}
303
299 if (ret)
300 dev_err(dev, "ACP init failed\n");
301 return ret;
302}
303
304static const struct dev_pm_ops acp62_pm_ops = {
305 SET_RUNTIME_PM_OPS(snd_acp62_suspend, snd_acp62_resume, NULL)
306 SET_SYSTEM_SLEEP_PM_OPS(snd_acp62_suspend, snd_acp62_resume)
304static const struct dev_pm_ops acp63_pm_ops = {
305 SET_RUNTIME_PM_OPS(snd_acp63_suspend, snd_acp63_resume, NULL)
306 SET_SYSTEM_SLEEP_PM_OPS(snd_acp63_suspend, snd_acp63_resume)
307};
308
307};
308
309static void snd_acp62_remove(struct pci_dev *pci)
309static void snd_acp63_remove(struct pci_dev *pci)
310{
310{
311 struct acp62_dev_data *adata;
311 struct acp63_dev_data *adata;
312 int ret, index;
313
314 adata = pci_get_drvdata(pci);
312 int ret, index;
313
314 adata = pci_get_drvdata(pci);
315 if (adata->acp62_audio_mode == ACP6x_PDM_MODE) {
315 if (adata->acp63_audio_mode == ACP6x_PDM_MODE) {
316 for (index = 0; index < ACP6x_DEVS; index++)
317 platform_device_unregister(adata->pdev[index]);
318 }
316 for (index = 0; index < ACP6x_DEVS; index++)
317 platform_device_unregister(adata->pdev[index]);
318 }
319 ret = acp62_deinit(adata->acp62_base, &pci->dev);
319 ret = acp63_deinit(adata->acp63_base, &pci->dev);
320 if (ret)
321 dev_err(&pci->dev, "ACP de-init failed\n");
322 pm_runtime_forbid(&pci->dev);
323 pm_runtime_get_noresume(&pci->dev);
324 pci_release_regions(pci);
325 pci_disable_device(pci);
326}
327
320 if (ret)
321 dev_err(&pci->dev, "ACP de-init failed\n");
322 pm_runtime_forbid(&pci->dev);
323 pm_runtime_get_noresume(&pci->dev);
324 pci_release_regions(pci);
325 pci_disable_device(pci);
326}
327
328static const struct pci_device_id snd_acp62_ids[] = {
328static const struct pci_device_id snd_acp63_ids[] = {
329 { PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DEVICE_ID),
330 .class = PCI_CLASS_MULTIMEDIA_OTHER << 8,
331 .class_mask = 0xffffff },
332 { 0, },
333};
329 { PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DEVICE_ID),
330 .class = PCI_CLASS_MULTIMEDIA_OTHER << 8,
331 .class_mask = 0xffffff },
332 { 0, },
333};
334MODULE_DEVICE_TABLE(pci, snd_acp62_ids);
334MODULE_DEVICE_TABLE(pci, snd_acp63_ids);
335
335
336static struct pci_driver ps_acp62_driver = {
336static struct pci_driver ps_acp63_driver = {
337 .name = KBUILD_MODNAME,
337 .name = KBUILD_MODNAME,
338 .id_table = snd_acp62_ids,
339 .probe = snd_acp62_probe,
340 .remove = snd_acp62_remove,
338 .id_table = snd_acp63_ids,
339 .probe = snd_acp63_probe,
340 .remove = snd_acp63_remove,
341 .driver = {
341 .driver = {
342 .pm = &acp62_pm_ops,
342 .pm = &acp63_pm_ops,
343 }
344};
345
343 }
344};
345
346module_pci_driver(ps_acp62_driver);
346module_pci_driver(ps_acp63_driver);
347
348MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
349MODULE_AUTHOR("Syed.SabaKareem@amd.com");
350MODULE_DESCRIPTION("AMD ACP Pink Sardine PCI driver");
351MODULE_LICENSE("GPL v2");
347
348MODULE_AUTHOR("Vijendar.Mukunda@amd.com");
349MODULE_AUTHOR("Syed.SabaKareem@amd.com");
350MODULE_DESCRIPTION("AMD ACP Pink Sardine PCI driver");
351MODULE_LICENSE("GPL v2");