Commit | Line | Data |
---|---|---|
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 AA |
63 | static int misc_check_res(struct acpi_resource *ares, void *data) |
64 | { | |
65 | struct resource res; | |
66 | ||
67 | return !acpi_dev_resource_memory(ares, &res); | |
68 | } | |
69 | ||
d58669b0 | 70 | static int fch_misc_setup(struct apd_private_data *pdata) |
3f4ba94e AA |
71 | { |
72 | struct acpi_device *adev = pdata->adev; | |
7f8802f2 | 73 | const union acpi_object *obj; |
3f4ba94e | 74 | struct platform_device *clkdev; |
d58669b0 | 75 | struct fch_clk_data *clk_data; |
3f4ba94e AA |
76 | struct resource_entry *rentry; |
77 | struct list_head resource_list; | |
78 | int ret; | |
79 | ||
80 | clk_data = devm_kzalloc(&adev->dev, sizeof(*clk_data), GFP_KERNEL); | |
81 | if (!clk_data) | |
82 | return -ENOMEM; | |
83 | ||
84 | INIT_LIST_HEAD(&resource_list); | |
85 | ret = acpi_dev_get_resources(adev, &resource_list, misc_check_res, | |
86 | NULL); | |
87 | if (ret < 0) | |
88 | return -ENOENT; | |
89 | ||
7fdb98e8 AKP |
90 | if (!acpi_dev_get_property(adev, "clk-name", ACPI_TYPE_STRING, &obj)) { |
91 | clk_data->name = devm_kzalloc(&adev->dev, obj->string.length, | |
92 | GFP_KERNEL); | |
93 | ||
94 | strcpy(clk_data->name, obj->string.pointer); | |
95 | } else { | |
96 | /* Set default name to mclk if entry missing in firmware */ | |
97 | clk_data->name = "mclk"; | |
98 | } | |
99 | ||
3f4ba94e AA |
100 | list_for_each_entry(rentry, &resource_list, node) { |
101 | clk_data->base = devm_ioremap(&adev->dev, rentry->res->start, | |
102 | resource_size(rentry->res)); | |
103 | break; | |
104 | } | |
2cea3ec5 JJ |
105 | if (!clk_data->base) |
106 | return -ENOMEM; | |
3f4ba94e AA |
107 | |
108 | acpi_dev_free_resource_list(&resource_list); | |
109 | ||
d58669b0 | 110 | clkdev = platform_device_register_data(&adev->dev, "clk-fch", |
3f4ba94e AA |
111 | PLATFORM_DEVID_NONE, clk_data, |
112 | sizeof(*clk_data)); | |
113 | return PTR_ERR_OR_ZERO(clkdev); | |
114 | } | |
115 | ||
a217726a | 116 | static const struct apd_device_desc cz_i2c_desc = { |
92082a88 KX |
117 | .setup = acpi_apd_setup, |
118 | .fixed_clk_rate = 133000000, | |
119 | }; | |
120 | ||
4881f0ba NS |
121 | static const struct apd_device_desc wt_i2c_desc = { |
122 | .setup = acpi_apd_setup, | |
123 | .fixed_clk_rate = 150000000, | |
124 | }; | |
125 | ||
7ff55d17 HK |
126 | static struct property_entry uart_properties[] = { |
127 | PROPERTY_ENTRY_U32("reg-io-width", 4), | |
128 | PROPERTY_ENTRY_U32("reg-shift", 2), | |
129 | PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"), | |
130 | { }, | |
131 | }; | |
132 | ||
a217726a | 133 | static const struct apd_device_desc cz_uart_desc = { |
92082a88 KX |
134 | .setup = acpi_apd_setup, |
135 | .fixed_clk_rate = 48000000, | |
7ff55d17 | 136 | .properties = uart_properties, |
92082a88 | 137 | }; |
3f4ba94e | 138 | |
d58669b0 AA |
139 | static const struct apd_device_desc fch_misc_desc = { |
140 | .setup = fch_misc_setup, | |
3f4ba94e | 141 | }; |
ee2bc5d2 | 142 | #endif /* CONFIG_X86_AMD_PLATFORM_DEVICE */ |
b790eb20 LH |
143 | |
144 | #ifdef CONFIG_ARM64 | |
a217726a | 145 | static const struct apd_device_desc xgene_i2c_desc = { |
b790eb20 LH |
146 | .setup = acpi_apd_setup, |
147 | .fixed_clk_rate = 100000000, | |
148 | }; | |
bd2058dc | 149 | |
a217726a | 150 | static const struct apd_device_desc vulcan_spi_desc = { |
bd2058dc KP |
151 | .setup = acpi_apd_setup, |
152 | .fixed_clk_rate = 133000000, | |
153 | }; | |
6e14cf36 HG |
154 | |
155 | static const struct apd_device_desc hip07_i2c_desc = { | |
156 | .setup = acpi_apd_setup, | |
157 | .fixed_clk_rate = 200000000, | |
158 | }; | |
159 | ||
160 | static const struct apd_device_desc hip08_i2c_desc = { | |
161 | .setup = acpi_apd_setup, | |
162 | .fixed_clk_rate = 250000000, | |
163 | }; | |
11330a9f | 164 | |
c01a4a13 HG |
165 | static const struct apd_device_desc hip08_lite_i2c_desc = { |
166 | .setup = acpi_apd_setup, | |
167 | .fixed_clk_rate = 125000000, | |
168 | }; | |
169 | ||
1977dbef J |
170 | static const struct apd_device_desc thunderx2_i2c_desc = { |
171 | .setup = acpi_apd_setup, | |
172 | .fixed_clk_rate = 125000000, | |
173 | }; | |
56131d6d | 174 | |
11330a9f CH |
175 | static const struct apd_device_desc nxp_i2c_desc = { |
176 | .setup = acpi_apd_setup, | |
177 | .fixed_clk_rate = 350000000, | |
178 | }; | |
179 | ||
56131d6d JF |
180 | static const struct apd_device_desc hip08_spi_desc = { |
181 | .setup = acpi_apd_setup, | |
182 | .fixed_clk_rate = 250000000, | |
183 | }; | |
ee2bc5d2 | 184 | #endif /* CONFIG_ARM64 */ |
92082a88 | 185 | |
ee2bc5d2 | 186 | #endif |
92082a88 | 187 | |
0955b3a5 XT |
188 | /* |
189 | * Create platform device during acpi scan attach handle. | |
190 | * Return value > 0 on success of creating device. | |
191 | */ | |
92082a88 KX |
192 | static int acpi_apd_create_device(struct acpi_device *adev, |
193 | const struct acpi_device_id *id) | |
194 | { | |
195 | const struct apd_device_desc *dev_desc = (void *)id->driver_data; | |
196 | struct apd_private_data *pdata; | |
197 | struct platform_device *pdev; | |
198 | int ret; | |
199 | ||
200 | if (!dev_desc) { | |
1571875b | 201 | pdev = acpi_create_platform_device(adev, NULL); |
92082a88 KX |
202 | return IS_ERR_OR_NULL(pdev) ? PTR_ERR(pdev) : 1; |
203 | } | |
204 | ||
205 | pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); | |
206 | if (!pdata) | |
207 | return -ENOMEM; | |
208 | ||
209 | pdata->adev = adev; | |
210 | pdata->dev_desc = dev_desc; | |
211 | ||
212 | if (dev_desc->setup) { | |
213 | ret = dev_desc->setup(pdata); | |
214 | if (ret) | |
215 | goto err_out; | |
216 | } | |
217 | ||
218 | adev->driver_data = pdata; | |
1571875b | 219 | pdev = acpi_create_platform_device(adev, dev_desc->properties); |
92082a88 KX |
220 | if (!IS_ERR_OR_NULL(pdev)) |
221 | return 1; | |
222 | ||
223 | ret = PTR_ERR(pdev); | |
224 | adev->driver_data = NULL; | |
225 | ||
226 | err_out: | |
227 | kfree(pdata); | |
228 | return ret; | |
229 | } | |
230 | ||
231 | static const struct acpi_device_id acpi_apd_device_ids[] = { | |
232 | /* Generic apd devices */ | |
b790eb20 | 233 | #ifdef CONFIG_X86_AMD_PLATFORM_DEVICE |
92082a88 KX |
234 | { "AMD0010", APD_ADDR(cz_i2c_desc) }, |
235 | { "AMD0020", APD_ADDR(cz_uart_desc) }, | |
236 | { "AMD0030", }, | |
d58669b0 | 237 | { "AMD0040", APD_ADDR(fch_misc_desc)}, |
78d5e9e2 JD |
238 | { "AMDI0010", APD_ADDR(wt_i2c_desc) }, |
239 | { "AMDI0019", APD_ADDR(wt_i2c_desc) }, | |
240 | { "AMDI0020", APD_ADDR(cz_uart_desc) }, | |
241 | { "AMDI0022", APD_ADDR(cz_uart_desc) }, | |
384b02d6 | 242 | { "HYGO0010", APD_ADDR(wt_i2c_desc) }, |
b790eb20 LH |
243 | #endif |
244 | #ifdef CONFIG_ARM64 | |
245 | { "APMC0D0F", APD_ADDR(xgene_i2c_desc) }, | |
bd2058dc | 246 | { "BRCM900D", APD_ADDR(vulcan_spi_desc) }, |
251831bd | 247 | { "CAV900D", APD_ADDR(vulcan_spi_desc) }, |
1977dbef | 248 | { "CAV9007", APD_ADDR(thunderx2_i2c_desc) }, |
f7f3dd5b HG |
249 | { "HISI02A1", APD_ADDR(hip07_i2c_desc) }, |
250 | { "HISI02A2", APD_ADDR(hip08_i2c_desc) }, | |
c01a4a13 | 251 | { "HISI02A3", APD_ADDR(hip08_lite_i2c_desc) }, |
56131d6d | 252 | { "HISI0173", APD_ADDR(hip08_spi_desc) }, |
11330a9f | 253 | { "NXP0001", APD_ADDR(nxp_i2c_desc) }, |
b790eb20 | 254 | #endif |
92082a88 KX |
255 | { } |
256 | }; | |
257 | ||
258 | static struct acpi_scan_handler apd_handler = { | |
259 | .ids = acpi_apd_device_ids, | |
260 | .attach = acpi_apd_create_device, | |
261 | }; | |
262 | ||
263 | void __init acpi_apd_init(void) | |
264 | { | |
265 | acpi_scan_add_handler(&apd_handler); | |
266 | } |