1 // SPDX-License-Identifier: GPL-2.0+ 1 // SPDX-License-Identifier: GPL-2.0+
2 /* 2 /*
3 * AMD RPL ACP PCI Driver 3 * AMD RPL ACP PCI Driver
4 * 4 *
5 * Copyright 2022 Advanced Micro Devices, Inc. 5 * Copyright 2022 Advanced Micro Devices, Inc.
6 */ 6 */
7 7
8 #include <linux/pci.h> 8 #include <linux/pci.h>
9 #include <linux/module.h> 9 #include <linux/module.h>
10 #include <linux/io.h> 10 #include <linux/io.h>
11 #include <linux/delay.h> 11 #include <linux/delay.h>
12 #include <linux/platform_device.h> 12 #include <linux/platform_device.h>
13 #include <linux/pm_runtime.h> 13 #include <linux/pm_runtime.h>
14 14
15 #include "rpl_acp6x.h" 15 #include "rpl_acp6x.h"
16 16
17 struct rpl_dev_data { 17 struct rpl_dev_data {
18 void __iomem *acp6x_base; 18 void __iomem *acp6x_base;
19 }; 19 };
20 20
21 static int rpl_power_on(void __iomem *acp_base 21 static int rpl_power_on(void __iomem *acp_base)
22 { 22 {
23 u32 val; 23 u32 val;
24 int timeout; 24 int timeout;
25 25
26 val = rpl_acp_readl(acp_base + ACP_PGF 26 val = rpl_acp_readl(acp_base + ACP_PGFSM_STATUS);
27 27
28 if (!val) 28 if (!val)
29 return val; 29 return val;
30 30
31 if ((val & ACP_PGFSM_STATUS_MASK) != A 31 if ((val & ACP_PGFSM_STATUS_MASK) != ACP_POWER_ON_IN_PROGRESS)
32 rpl_acp_writel(ACP_PGFSM_CNTL_ 32 rpl_acp_writel(ACP_PGFSM_CNTL_POWER_ON_MASK, acp_base + ACP_PGFSM_CONTROL);
33 timeout = 0; 33 timeout = 0;
34 while (++timeout < 500) { 34 while (++timeout < 500) {
35 val = rpl_acp_readl(acp_base + 35 val = rpl_acp_readl(acp_base + ACP_PGFSM_STATUS);
36 if (!val) 36 if (!val)
37 return 0; 37 return 0;
38 udelay(1); 38 udelay(1);
39 } 39 }
40 return -ETIMEDOUT; 40 return -ETIMEDOUT;
41 } 41 }
42 42
43 static int rpl_reset(void __iomem *acp_base) 43 static int rpl_reset(void __iomem *acp_base)
44 { 44 {
45 u32 val; 45 u32 val;
46 int timeout; 46 int timeout;
47 47
48 rpl_acp_writel(1, acp_base + ACP_SOFT_ 48 rpl_acp_writel(1, acp_base + ACP_SOFT_RESET);
49 timeout = 0; 49 timeout = 0;
50 while (++timeout < 500) { 50 while (++timeout < 500) {
51 val = rpl_acp_readl(acp_base + 51 val = rpl_acp_readl(acp_base + ACP_SOFT_RESET);
52 if (val & ACP_SOFT_RESET_SOFTR 52 if (val & ACP_SOFT_RESET_SOFTRESET_AUDDONE_MASK)
53 break; 53 break;
54 cpu_relax(); 54 cpu_relax();
55 } 55 }
56 rpl_acp_writel(0, acp_base + ACP_SOFT_ 56 rpl_acp_writel(0, acp_base + ACP_SOFT_RESET);
57 timeout = 0; 57 timeout = 0;
58 while (++timeout < 500) { 58 while (++timeout < 500) {
59 val = rpl_acp_readl(acp_base + 59 val = rpl_acp_readl(acp_base + ACP_SOFT_RESET);
60 if (!val) 60 if (!val)
61 return 0; 61 return 0;
62 cpu_relax(); 62 cpu_relax();
63 } 63 }
64 return -ETIMEDOUT; 64 return -ETIMEDOUT;
65 } 65 }
66 66
67 static int rpl_init(void __iomem *acp_base) 67 static int rpl_init(void __iomem *acp_base)
68 { 68 {
69 int ret; 69 int ret;
70 70
71 /* power on */ 71 /* power on */
72 ret = rpl_power_on(acp_base); 72 ret = rpl_power_on(acp_base);
73 if (ret) { 73 if (ret) {
74 pr_err("ACP power on failed\n" 74 pr_err("ACP power on failed\n");
75 return ret; 75 return ret;
76 } 76 }
77 rpl_acp_writel(0x01, acp_base + ACP_CO 77 rpl_acp_writel(0x01, acp_base + ACP_CONTROL);
78 /* Reset */ 78 /* Reset */
79 ret = rpl_reset(acp_base); 79 ret = rpl_reset(acp_base);
80 if (ret) { 80 if (ret) {
81 pr_err("ACP reset failed\n"); 81 pr_err("ACP reset failed\n");
82 return ret; 82 return ret;
83 } 83 }
84 rpl_acp_writel(0x03, acp_base + ACP_CL 84 rpl_acp_writel(0x03, acp_base + ACP_CLKMUX_SEL);
85 return 0; 85 return 0;
86 } 86 }
87 87
88 static int rpl_deinit(void __iomem *acp_base) 88 static int rpl_deinit(void __iomem *acp_base)
89 { 89 {
90 int ret; 90 int ret;
91 91
92 /* Reset */ 92 /* Reset */
93 ret = rpl_reset(acp_base); 93 ret = rpl_reset(acp_base);
94 if (ret) { 94 if (ret) {
95 pr_err("ACP reset failed\n"); 95 pr_err("ACP reset failed\n");
96 return ret; 96 return ret;
97 } 97 }
98 rpl_acp_writel(0x00, acp_base + ACP_CL 98 rpl_acp_writel(0x00, acp_base + ACP_CLKMUX_SEL);
99 rpl_acp_writel(0x00, acp_base + ACP_CO 99 rpl_acp_writel(0x00, acp_base + ACP_CONTROL);
100 return 0; 100 return 0;
101 } 101 }
102 102
103 static int snd_rpl_probe(struct pci_dev *pci, 103 static int snd_rpl_probe(struct pci_dev *pci,
104 const struct pci_devi 104 const struct pci_device_id *pci_id)
105 { 105 {
106 struct rpl_dev_data *adata; 106 struct rpl_dev_data *adata;
107 u32 addr; 107 u32 addr;
108 int ret; 108 int ret;
109 109
110 /* RPL device check */ 110 /* RPL device check */
111 switch (pci->revision) { 111 switch (pci->revision) {
112 case 0x62: 112 case 0x62:
113 break; 113 break;
114 default: 114 default:
115 dev_dbg(&pci->dev, "acp6x pci 115 dev_dbg(&pci->dev, "acp6x pci device not found\n");
116 return -ENODEV; 116 return -ENODEV;
117 } 117 }
118 if (pci_enable_device(pci)) { 118 if (pci_enable_device(pci)) {
119 dev_err(&pci->dev, "pci_enable 119 dev_err(&pci->dev, "pci_enable_device failed\n");
120 return -ENODEV; 120 return -ENODEV;
121 } 121 }
122 122
123 ret = pci_request_regions(pci, "AMD AC 123 ret = pci_request_regions(pci, "AMD ACP6x audio");
124 if (ret < 0) { 124 if (ret < 0) {
125 dev_err(&pci->dev, "pci_reques 125 dev_err(&pci->dev, "pci_request_regions failed\n");
126 goto disable_pci; 126 goto disable_pci;
127 } 127 }
128 128
129 adata = devm_kzalloc(&pci->dev, sizeof 129 adata = devm_kzalloc(&pci->dev, sizeof(struct rpl_dev_data),
130 GFP_KERNEL); 130 GFP_KERNEL);
131 if (!adata) { 131 if (!adata) {
132 ret = -ENOMEM; 132 ret = -ENOMEM;
133 goto release_regions; 133 goto release_regions;
134 } 134 }
135 135
136 addr = pci_resource_start(pci, 0); 136 addr = pci_resource_start(pci, 0);
137 adata->acp6x_base = devm_ioremap(&pci- 137 adata->acp6x_base = devm_ioremap(&pci->dev, addr,
138 pci_r 138 pci_resource_len(pci, 0));
139 if (!adata->acp6x_base) { 139 if (!adata->acp6x_base) {
140 ret = -ENOMEM; 140 ret = -ENOMEM;
141 goto release_regions; 141 goto release_regions;
142 } 142 }
143 pci_set_master(pci); 143 pci_set_master(pci);
144 pci_set_drvdata(pci, adata); 144 pci_set_drvdata(pci, adata);
145 ret = rpl_init(adata->acp6x_base); 145 ret = rpl_init(adata->acp6x_base);
146 if (ret) 146 if (ret)
147 goto release_regions; 147 goto release_regions;
148 pm_runtime_set_autosuspend_delay(&pci- 148 pm_runtime_set_autosuspend_delay(&pci->dev, ACP_SUSPEND_DELAY_MS);
149 pm_runtime_use_autosuspend(&pci->dev); 149 pm_runtime_use_autosuspend(&pci->dev);
150 pm_runtime_put_noidle(&pci->dev); 150 pm_runtime_put_noidle(&pci->dev);
151 pm_runtime_allow(&pci->dev); 151 pm_runtime_allow(&pci->dev);
152 152
153 return 0; 153 return 0;
154 release_regions: 154 release_regions:
155 pci_release_regions(pci); 155 pci_release_regions(pci);
156 disable_pci: 156 disable_pci:
157 pci_disable_device(pci); 157 pci_disable_device(pci);
158 158
159 return ret; 159 return ret;
160 } 160 }
161 161
162 static int __maybe_unused snd_rpl_suspend(stru 162 static int __maybe_unused snd_rpl_suspend(struct device *dev)
163 { 163 {
164 struct rpl_dev_data *adata; 164 struct rpl_dev_data *adata;
165 int ret; 165 int ret;
166 166
167 adata = dev_get_drvdata(dev); 167 adata = dev_get_drvdata(dev);
168 ret = rpl_deinit(adata->acp6x_base); 168 ret = rpl_deinit(adata->acp6x_base);
169 if (ret) 169 if (ret)
170 dev_err(dev, "ACP de-init fail 170 dev_err(dev, "ACP de-init failed\n");
171 return ret; 171 return ret;
172 } 172 }
173 173
174 static int __maybe_unused snd_rpl_resume(struc 174 static int __maybe_unused snd_rpl_resume(struct device *dev)
175 { 175 {
176 struct rpl_dev_data *adata; 176 struct rpl_dev_data *adata;
177 int ret; 177 int ret;
178 178
179 adata = dev_get_drvdata(dev); 179 adata = dev_get_drvdata(dev);
180 ret = rpl_init(adata->acp6x_base); 180 ret = rpl_init(adata->acp6x_base);
181 if (ret) 181 if (ret)
182 dev_err(dev, "ACP init failed\ 182 dev_err(dev, "ACP init failed\n");
183 return ret; 183 return ret;
184 } 184 }
185 185
186 static const struct dev_pm_ops rpl_pm = { 186 static const struct dev_pm_ops rpl_pm = {
187 SET_RUNTIME_PM_OPS(snd_rpl_suspend, sn 187 SET_RUNTIME_PM_OPS(snd_rpl_suspend, snd_rpl_resume, NULL)
188 SET_SYSTEM_SLEEP_PM_OPS(snd_rpl_suspen 188 SET_SYSTEM_SLEEP_PM_OPS(snd_rpl_suspend, snd_rpl_resume)
189 }; 189 };
190 190
191 static void snd_rpl_remove(struct pci_dev *pci 191 static void snd_rpl_remove(struct pci_dev *pci)
192 { 192 {
193 struct rpl_dev_data *adata; 193 struct rpl_dev_data *adata;
194 int ret; 194 int ret;
195 195
196 adata = pci_get_drvdata(pci); 196 adata = pci_get_drvdata(pci);
197 ret = rpl_deinit(adata->acp6x_base); 197 ret = rpl_deinit(adata->acp6x_base);
198 if (ret) 198 if (ret)
199 dev_err(&pci->dev, "ACP de-ini 199 dev_err(&pci->dev, "ACP de-init failed\n");
200 pm_runtime_forbid(&pci->dev); 200 pm_runtime_forbid(&pci->dev);
201 pm_runtime_get_noresume(&pci->dev); 201 pm_runtime_get_noresume(&pci->dev);
202 pci_release_regions(pci); 202 pci_release_regions(pci);
203 pci_disable_device(pci); 203 pci_disable_device(pci);
204 } 204 }
205 205
206 static const struct pci_device_id snd_rpl_ids[ 206 static const struct pci_device_id snd_rpl_ids[] = {
207 { PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DE 207 { PCI_DEVICE(PCI_VENDOR_ID_AMD, ACP_DEVICE_ID),
208 .class = PCI_CLASS_MULTIMEDIA_OTHER << 208 .class = PCI_CLASS_MULTIMEDIA_OTHER << 8,
209 .class_mask = 0xffffff }, 209 .class_mask = 0xffffff },
210 { 0, }, 210 { 0, },
211 }; 211 };
212 MODULE_DEVICE_TABLE(pci, snd_rpl_ids); 212 MODULE_DEVICE_TABLE(pci, snd_rpl_ids);
213 213
214 static struct pci_driver rpl_acp6x_driver = { 214 static struct pci_driver rpl_acp6x_driver = {
215 .name = KBUILD_MODNAME, 215 .name = KBUILD_MODNAME,
216 .id_table = snd_rpl_ids, 216 .id_table = snd_rpl_ids,
217 .probe = snd_rpl_probe, 217 .probe = snd_rpl_probe,
218 .remove = snd_rpl_remove, 218 .remove = snd_rpl_remove,
219 .driver = { 219 .driver = {
220 .pm = &rpl_pm, 220 .pm = &rpl_pm,
221 } 221 }
222 }; 222 };
223 223
224 module_pci_driver(rpl_acp6x_driver); 224 module_pci_driver(rpl_acp6x_driver);
225 225
226 MODULE_DESCRIPTION("AMD ACP RPL PCI driver"); 226 MODULE_DESCRIPTION("AMD ACP RPL PCI driver");
227 MODULE_LICENSE("GPL v2"); 227 MODULE_LICENSE("GPL v2");
228 228
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