This source file includes following definitions.
- apu_create_pdev
- apu_board_init
- apu_board_exit
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11 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
12
13 #include <linux/dmi.h>
14 #include <linux/err.h>
15 #include <linux/kernel.h>
16 #include <linux/leds.h>
17 #include <linux/module.h>
18 #include <linux/platform_device.h>
19 #include <linux/gpio_keys.h>
20 #include <linux/gpio/machine.h>
21 #include <linux/input.h>
22 #include <linux/platform_data/gpio/gpio-amd-fch.h>
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29
30 #define APU2_GPIO_REG_LED1 AMD_FCH_GPIO_REG_GPIO57
31 #define APU2_GPIO_REG_LED2 AMD_FCH_GPIO_REG_GPIO58
32 #define APU2_GPIO_REG_LED3 AMD_FCH_GPIO_REG_GPIO59_DEVSLP1
33 #define APU2_GPIO_REG_MODESW AMD_FCH_GPIO_REG_GPIO32_GE1
34 #define APU2_GPIO_REG_SIMSWAP AMD_FCH_GPIO_REG_GPIO33_GE2
35 #define APU2_GPIO_REG_MPCIE2 AMD_FCH_GPIO_REG_GPIO59_DEVSLP0
36 #define APU2_GPIO_REG_MPCIE3 AMD_FCH_GPIO_REG_GPIO51
37
38
39 #define APU2_GPIO_LINE_LED1 0
40 #define APU2_GPIO_LINE_LED2 1
41 #define APU2_GPIO_LINE_LED3 2
42 #define APU2_GPIO_LINE_MODESW 3
43 #define APU2_GPIO_LINE_SIMSWAP 4
44 #define APU2_GPIO_LINE_MPCIE2 5
45 #define APU2_GPIO_LINE_MPCIE3 6
46
47
48
49 static int apu2_gpio_regs[] = {
50 [APU2_GPIO_LINE_LED1] = APU2_GPIO_REG_LED1,
51 [APU2_GPIO_LINE_LED2] = APU2_GPIO_REG_LED2,
52 [APU2_GPIO_LINE_LED3] = APU2_GPIO_REG_LED3,
53 [APU2_GPIO_LINE_MODESW] = APU2_GPIO_REG_MODESW,
54 [APU2_GPIO_LINE_SIMSWAP] = APU2_GPIO_REG_SIMSWAP,
55 [APU2_GPIO_LINE_MPCIE2] = APU2_GPIO_REG_MPCIE2,
56 [APU2_GPIO_LINE_MPCIE3] = APU2_GPIO_REG_MPCIE3,
57 };
58
59 static const char * const apu2_gpio_names[] = {
60 [APU2_GPIO_LINE_LED1] = "front-led1",
61 [APU2_GPIO_LINE_LED2] = "front-led2",
62 [APU2_GPIO_LINE_LED3] = "front-led3",
63 [APU2_GPIO_LINE_MODESW] = "front-button",
64 [APU2_GPIO_LINE_SIMSWAP] = "simswap",
65 [APU2_GPIO_LINE_MPCIE2] = "mpcie2_reset",
66 [APU2_GPIO_LINE_MPCIE3] = "mpcie3_reset",
67 };
68
69 static const struct amd_fch_gpio_pdata board_apu2 = {
70 .gpio_num = ARRAY_SIZE(apu2_gpio_regs),
71 .gpio_reg = apu2_gpio_regs,
72 .gpio_names = apu2_gpio_names,
73 };
74
75
76
77 static const struct gpio_led apu2_leds[] = {
78 { .name = "apu:green:1" },
79 { .name = "apu:green:2" },
80 { .name = "apu:green:3" },
81 { .name = "apu:simswap" },
82 };
83
84 static const struct gpio_led_platform_data apu2_leds_pdata = {
85 .num_leds = ARRAY_SIZE(apu2_leds),
86 .leds = apu2_leds,
87 };
88
89 static struct gpiod_lookup_table gpios_led_table = {
90 .dev_id = "leds-gpio",
91 .table = {
92 GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED1,
93 NULL, 0, GPIO_ACTIVE_LOW),
94 GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED2,
95 NULL, 1, GPIO_ACTIVE_LOW),
96 GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_LED3,
97 NULL, 2, GPIO_ACTIVE_LOW),
98 GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_SIMSWAP,
99 NULL, 3, GPIO_ACTIVE_LOW),
100 }
101 };
102
103
104
105 static struct gpio_keys_button apu2_keys_buttons[] = {
106 {
107 .code = KEY_RESTART,
108 .active_low = 1,
109 .desc = "front button",
110 .type = EV_KEY,
111 .debounce_interval = 10,
112 .value = 1,
113 },
114 };
115
116 static const struct gpio_keys_platform_data apu2_keys_pdata = {
117 .buttons = apu2_keys_buttons,
118 .nbuttons = ARRAY_SIZE(apu2_keys_buttons),
119 .poll_interval = 100,
120 .rep = 0,
121 .name = "apu2-keys",
122 };
123
124 static struct gpiod_lookup_table gpios_key_table = {
125 .dev_id = "gpio-keys-polled",
126 .table = {
127 GPIO_LOOKUP_IDX(AMD_FCH_GPIO_DRIVER_NAME, APU2_GPIO_LINE_MODESW,
128 NULL, 0, GPIO_ACTIVE_LOW),
129 }
130 };
131
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133
134
135 static const struct dmi_system_id apu_gpio_dmi_table[] __initconst = {
136
137
138 {
139 .ident = "apu2",
140 .matches = {
141 DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
142 DMI_MATCH(DMI_BOARD_NAME, "APU2")
143 },
144 .driver_data = (void *)&board_apu2,
145 },
146
147 {
148 .ident = "apu2",
149 .matches = {
150 DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
151 DMI_MATCH(DMI_BOARD_NAME, "apu2")
152 },
153 .driver_data = (void *)&board_apu2,
154 },
155
156 {
157 .ident = "apu2",
158 .matches = {
159 DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
160 DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu2")
161 },
162 .driver_data = (void *)&board_apu2,
163 },
164
165
166 {
167 .ident = "apu3",
168 .matches = {
169 DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
170 DMI_MATCH(DMI_BOARD_NAME, "APU3")
171 },
172 .driver_data = (void *)&board_apu2,
173 },
174
175 {
176 .ident = "apu3",
177 .matches = {
178 DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
179 DMI_MATCH(DMI_BOARD_NAME, "apu3")
180 },
181 .driver_data = (void *)&board_apu2,
182 },
183
184 {
185 .ident = "apu3",
186 .matches = {
187 DMI_MATCH(DMI_SYS_VENDOR, "PC Engines"),
188 DMI_MATCH(DMI_BOARD_NAME, "PC Engines apu3")
189 },
190 .driver_data = (void *)&board_apu2,
191 },
192 {}
193 };
194
195 static struct platform_device *apu_gpio_pdev;
196 static struct platform_device *apu_leds_pdev;
197 static struct platform_device *apu_keys_pdev;
198
199 static struct platform_device * __init apu_create_pdev(
200 const char *name,
201 const void *pdata,
202 size_t sz)
203 {
204 struct platform_device *pdev;
205
206 pdev = platform_device_register_resndata(NULL,
207 name,
208 PLATFORM_DEVID_NONE,
209 NULL,
210 0,
211 pdata,
212 sz);
213
214 if (IS_ERR(pdev))
215 pr_err("failed registering %s: %ld\n", name, PTR_ERR(pdev));
216
217 return pdev;
218 }
219
220 static int __init apu_board_init(void)
221 {
222 const struct dmi_system_id *id;
223
224 id = dmi_first_match(apu_gpio_dmi_table);
225 if (!id) {
226 pr_err("failed to detect apu board via dmi\n");
227 return -ENODEV;
228 }
229
230 gpiod_add_lookup_table(&gpios_led_table);
231 gpiod_add_lookup_table(&gpios_key_table);
232
233 apu_gpio_pdev = apu_create_pdev(
234 AMD_FCH_GPIO_DRIVER_NAME,
235 id->driver_data,
236 sizeof(struct amd_fch_gpio_pdata));
237
238 apu_leds_pdev = apu_create_pdev(
239 "leds-gpio",
240 &apu2_leds_pdata,
241 sizeof(apu2_leds_pdata));
242
243 apu_keys_pdev = apu_create_pdev(
244 "gpio-keys-polled",
245 &apu2_keys_pdata,
246 sizeof(apu2_keys_pdata));
247
248 return 0;
249 }
250
251 static void __exit apu_board_exit(void)
252 {
253 gpiod_remove_lookup_table(&gpios_led_table);
254 gpiod_remove_lookup_table(&gpios_key_table);
255
256 platform_device_unregister(apu_keys_pdev);
257 platform_device_unregister(apu_leds_pdev);
258 platform_device_unregister(apu_gpio_pdev);
259 }
260
261 module_init(apu_board_init);
262 module_exit(apu_board_exit);
263
264 MODULE_AUTHOR("Enrico Weigelt, metux IT consult <info@metux.net>");
265 MODULE_DESCRIPTION("PC Engines APUv2/APUv3 board GPIO/LED/keys driver");
266 MODULE_LICENSE("GPL");
267 MODULE_DEVICE_TABLE(dmi, apu_gpio_dmi_table);
268 MODULE_ALIAS("platform:pcengines-apuv2");
269 MODULE_SOFTDEP("pre: platform:" AMD_FCH_GPIO_DRIVER_NAME " platform:leds-gpio platform:gpio_keys_polled");