Commit | Line | Data |
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d2912cb1 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
92082a88 KX |
2 | /* |
3 | * AMD ACPI support for ACPI2platform device. | |
4 | * | |
5 | * Copyright (c) 2014,2015 AMD Corporation. | |
6 | * Authors: Ken Xue <Ken.Xue@amd.com> | |
7 | * Wu, Jeff <Jeff.Wu@amd.com> | |
92082a88 KX |
8 | */ |
9 | ||
92082a88 | 10 | #include <linux/acpi.h> |
32c6f3ff HG |
11 | #include <linux/clkdev.h> |
12 | #include <linux/clk-provider.h> | |
92082a88 | 13 | #include <linux/err.h> |
62e59c4e | 14 | #include <linux/io.h> |
32c6f3ff HG |
15 | #include <linux/platform_data/clk-fch.h> |
16 | #include <linux/platform_device.h> | |
92082a88 KX |
17 | |
18 | #include "internal.h" | |
19 | ||
92082a88 KX |
20 | struct apd_private_data; |
21 | ||
92082a88 KX |
22 | /** |
23 | * struct apd_device_desc - a descriptor for apd device | |
92082a88 KX |
24 | * @fixed_clk_rate: fixed rate input clock source for acpi device; |
25 | * 0 means no fixed rate input clock source | |
ad4a0f24 | 26 | * @properties: build-in properties of the device such as UART |
92082a88 KX |
27 | * @setup: a hook routine to set device resource during create platform device |
28 | * | |
29 | * Device description defined as acpi_device_id.driver_data | |
30 | */ | |
31 | struct apd_device_desc { | |
92082a88 | 32 | unsigned int fixed_clk_rate; |
7ff55d17 | 33 | struct property_entry *properties; |
92082a88 KX |
34 | int (*setup)(struct apd_private_data *pdata); |
35 | }; | |
36 | ||
37 | struct apd_private_data { | |
38 | struct clk *clk; | |
39 | struct acpi_device *adev; | |
40 | const struct apd_device_desc *dev_desc; | |
41 | }; | |
42 | ||
b790eb20 | 43 | #if defined(CONFIG_X86_AMD_PLATFORM_DEVICE) || defined(CONFIG_ARM64) |
92082a88 KX |
44 | #define APD_ADDR(desc) ((unsigned long)&desc) |
45 | ||
46 | static int acpi_apd_setup(struct apd_private_data *pdata) | |
47 | { | |
48 | const struct apd_device_desc *dev_desc = pdata->dev_desc; | |
b244883c | 49 | struct clk *clk; |
92082a88 KX |
50 | |
51 | if (dev_desc->fixed_clk_rate) { | |
52 | clk = clk_register_fixed_rate(&pdata->adev->dev, | |
53 | dev_name(&pdata->adev->dev), | |
cdd9a6b2 | 54 | NULL, 0, dev_desc->fixed_clk_rate); |
92082a88 KX |
55 | clk_register_clkdev(clk, NULL, dev_name(&pdata->adev->dev)); |
56 | pdata->clk = clk; | |
57 | } | |
58 | ||
59 | return 0; | |
60 | } | |
61 | ||
b790eb20 | 62 | #ifdef CONFIG_X86_AMD_PLATFORM_DEVICE |
3f4ba94e | 63 | |
d58669b0 | 64 | static int fch_misc_setup(struct apd_private_data *pdata) |
3f4ba94e AA |
65 | { |
66 | struct acpi_device *adev = pdata->adev; | |
7f8802f2 | 67 | const union acpi_object *obj; |
3f4ba94e | 68 | struct platform_device *clkdev; |
d58669b0 | 69 | struct fch_clk_data *clk_data; |
3f4ba94e AA |
70 | struct resource_entry *rentry; |
71 | struct list_head resource_list; | |
72 | int ret; | |
73 | ||
74 | clk_data = devm_kzalloc(&adev->dev, sizeof(*clk_data), GFP_KERNEL); | |
75 | if (!clk_data) | |
76 | return -ENOMEM; | |
77 | ||
78 | INIT_LIST_HEAD(&resource_list); | |
064d42d9 | 79 | ret = acpi_dev_get_memory_resources(adev, &resource_list); |
3f4ba94e AA |
80 | if (ret < 0) |
81 | return -ENOENT; | |
82 | ||
7fdb98e8 AKP |
83 | if (!acpi_dev_get_property(adev, "clk-name", ACPI_TYPE_STRING, &obj)) { |
84 | clk_data->name = devm_kzalloc(&adev->dev, obj->string.length, | |
85 | GFP_KERNEL); | |
86 | ||
87 | strcpy(clk_data->name, obj->string.pointer); | |
88 | } else { | |
89 | /* Set default name to mclk if entry missing in firmware */ | |
90 | clk_data->name = "mclk"; | |
91 | } | |
92 | ||
3f4ba94e AA |
93 | list_for_each_entry(rentry, &resource_list, node) { |
94 | clk_data->base = devm_ioremap(&adev->dev, rentry->res->start, | |
95 | resource_size(rentry->res)); | |
96 | break; | |
97 | } | |
2cea3ec5 JJ |
98 | if (!clk_data->base) |
99 | return -ENOMEM; | |
3f4ba94e AA |
100 | |
101 | acpi_dev_free_resource_list(&resource_list); | |
102 | ||
d58669b0 | 103 | clkdev = platform_device_register_data(&adev->dev, "clk-fch", |
3f4ba94e AA |
104 | PLATFORM_DEVID_NONE, clk_data, |
105 | sizeof(*clk_data)); | |
106 | return PTR_ERR_OR_ZERO(clkdev); | |
107 | } | |
108 | ||
a217726a | 109 | static const struct apd_device_desc cz_i2c_desc = { |
92082a88 KX |
110 | .setup = acpi_apd_setup, |
111 | .fixed_clk_rate = 133000000, | |
112 | }; | |
113 | ||
4881f0ba NS |
114 | static const struct apd_device_desc wt_i2c_desc = { |
115 | .setup = acpi_apd_setup, | |
116 | .fixed_clk_rate = 150000000, | |
117 | }; | |
118 | ||
7ff55d17 HK |
119 | static struct property_entry uart_properties[] = { |
120 | PROPERTY_ENTRY_U32("reg-io-width", 4), | |
121 | PROPERTY_ENTRY_U32("reg-shift", 2), | |
122 | PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"), | |
123 | { }, | |
124 | }; | |
125 | ||
a217726a | 126 | static const struct apd_device_desc cz_uart_desc = { |
92082a88 KX |
127 | .setup = acpi_apd_setup, |
128 | .fixed_clk_rate = 48000000, | |
7ff55d17 | 129 | .properties = uart_properties, |
92082a88 | 130 | }; |
3f4ba94e | 131 | |
d58669b0 AA |
132 | static const struct apd_device_desc fch_misc_desc = { |
133 | .setup = fch_misc_setup, | |
3f4ba94e | 134 | }; |
ee2bc5d2 | 135 | #endif /* CONFIG_X86_AMD_PLATFORM_DEVICE */ |
b790eb20 LH |
136 | |
137 | #ifdef CONFIG_ARM64 | |
a217726a | 138 | static const struct apd_device_desc xgene_i2c_desc = { |
b790eb20 LH |
139 | .setup = acpi_apd_setup, |
140 | .fixed_clk_rate = 100000000, | |
141 | }; | |
bd2058dc | 142 | |
a217726a | 143 | static const struct apd_device_desc vulcan_spi_desc = { |
bd2058dc KP |
144 | .setup = acpi_apd_setup, |
145 | .fixed_clk_rate = 133000000, | |
146 | }; | |
6e14cf36 HG |
147 | |
148 | static const struct apd_device_desc hip07_i2c_desc = { | |
149 | .setup = acpi_apd_setup, | |
150 | .fixed_clk_rate = 200000000, | |
151 | }; | |
152 | ||
153 | static const struct apd_device_desc hip08_i2c_desc = { | |
154 | .setup = acpi_apd_setup, | |
155 | .fixed_clk_rate = 250000000, | |
156 | }; | |
11330a9f | 157 | |
c01a4a13 HG |
158 | static const struct apd_device_desc hip08_lite_i2c_desc = { |
159 | .setup = acpi_apd_setup, | |
160 | .fixed_clk_rate = 125000000, | |
161 | }; | |
162 | ||
1977dbef J |
163 | static const struct apd_device_desc thunderx2_i2c_desc = { |
164 | .setup = acpi_apd_setup, | |
165 | .fixed_clk_rate = 125000000, | |
166 | }; | |
56131d6d | 167 | |
11330a9f CH |
168 | static const struct apd_device_desc nxp_i2c_desc = { |
169 | .setup = acpi_apd_setup, | |
170 | .fixed_clk_rate = 350000000, | |
171 | }; | |
172 | ||
56131d6d JF |
173 | static const struct apd_device_desc hip08_spi_desc = { |
174 | .setup = acpi_apd_setup, | |
175 | .fixed_clk_rate = 250000000, | |
176 | }; | |
ee2bc5d2 | 177 | #endif /* CONFIG_ARM64 */ |
92082a88 | 178 | |
ee2bc5d2 | 179 | #endif |
92082a88 | 180 | |
0955b3a5 XT |
181 | /* |
182 | * Create platform device during acpi scan attach handle. | |
183 | * Return value > 0 on success of creating device. | |
184 | */ | |
92082a88 KX |
185 | static int acpi_apd_create_device(struct acpi_device *adev, |
186 | const struct acpi_device_id *id) | |
187 | { | |
188 | const struct apd_device_desc *dev_desc = (void *)id->driver_data; | |
189 | struct apd_private_data *pdata; | |
190 | struct platform_device *pdev; | |
191 | int ret; | |
192 | ||
193 | if (!dev_desc) { | |
1571875b | 194 | pdev = acpi_create_platform_device(adev, NULL); |
92082a88 KX |
195 | return IS_ERR_OR_NULL(pdev) ? PTR_ERR(pdev) : 1; |
196 | } | |
197 | ||
198 | pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); | |
199 | if (!pdata) | |
200 | return -ENOMEM; | |
201 | ||
202 | pdata->adev = adev; | |
203 | pdata->dev_desc = dev_desc; | |
204 | ||
205 | if (dev_desc->setup) { | |
206 | ret = dev_desc->setup(pdata); | |
207 | if (ret) | |
208 | goto err_out; | |
209 | } | |
210 | ||
211 | adev->driver_data = pdata; | |
1571875b | 212 | pdev = acpi_create_platform_device(adev, dev_desc->properties); |
92082a88 KX |
213 | if (!IS_ERR_OR_NULL(pdev)) |
214 | return 1; | |
215 | ||
216 | ret = PTR_ERR(pdev); | |
217 | adev->driver_data = NULL; | |
218 | ||
219 | err_out: | |
220 | kfree(pdata); | |
221 | return ret; | |
222 | } | |
223 | ||
224 | static const struct acpi_device_id acpi_apd_device_ids[] = { | |
225 | /* Generic apd devices */ | |
b790eb20 | 226 | #ifdef CONFIG_X86_AMD_PLATFORM_DEVICE |
92082a88 KX |
227 | { "AMD0010", APD_ADDR(cz_i2c_desc) }, |
228 | { "AMD0020", APD_ADDR(cz_uart_desc) }, | |
229 | { "AMD0030", }, | |
d58669b0 | 230 | { "AMD0040", APD_ADDR(fch_misc_desc)}, |
78d5e9e2 JD |
231 | { "AMDI0010", APD_ADDR(wt_i2c_desc) }, |
232 | { "AMDI0019", APD_ADDR(wt_i2c_desc) }, | |
233 | { "AMDI0020", APD_ADDR(cz_uart_desc) }, | |
234 | { "AMDI0022", APD_ADDR(cz_uart_desc) }, | |
384b02d6 | 235 | { "HYGO0010", APD_ADDR(wt_i2c_desc) }, |
b790eb20 LH |
236 | #endif |
237 | #ifdef CONFIG_ARM64 | |
238 | { "APMC0D0F", APD_ADDR(xgene_i2c_desc) }, | |
bd2058dc | 239 | { "BRCM900D", APD_ADDR(vulcan_spi_desc) }, |
251831bd | 240 | { "CAV900D", APD_ADDR(vulcan_spi_desc) }, |
1977dbef | 241 | { "CAV9007", APD_ADDR(thunderx2_i2c_desc) }, |
f7f3dd5b HG |
242 | { "HISI02A1", APD_ADDR(hip07_i2c_desc) }, |
243 | { "HISI02A2", APD_ADDR(hip08_i2c_desc) }, | |
c01a4a13 | 244 | { "HISI02A3", APD_ADDR(hip08_lite_i2c_desc) }, |
56131d6d | 245 | { "HISI0173", APD_ADDR(hip08_spi_desc) }, |
11330a9f | 246 | { "NXP0001", APD_ADDR(nxp_i2c_desc) }, |
b790eb20 | 247 | #endif |
92082a88 KX |
248 | { } |
249 | }; | |
250 | ||
251 | static struct acpi_scan_handler apd_handler = { | |
252 | .ids = acpi_apd_device_ids, | |
253 | .attach = acpi_apd_create_device, | |
254 | }; | |
255 | ||
256 | void __init acpi_apd_init(void) | |
257 | { | |
258 | acpi_scan_add_handler(&apd_handler); | |
259 | } |