1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * TI TPS68470 PMIC platform data definition.
4  *
5  * Copyright (c) 2021 Dan Scally <djrscally@gmail.com>
6  * Copyright (c) 2021 Red Hat Inc.
7  *
8  * Red Hat authors:
9  * Hans de Goede <hdegoede@redhat.com>
10  */
11 
12 #include <linux/dmi.h>
13 #include <linux/gpio/machine.h>
14 #include <linux/platform_data/tps68470.h>
15 #include <linux/regulator/machine.h>
16 #include "tps68470.h"
17 
18 static struct regulator_consumer_supply int347a_core_consumer_supplies[] = {
19 	REGULATOR_SUPPLY("dvdd", "i2c-INT347A:00"),
20 };
21 
22 static struct regulator_consumer_supply int347a_ana_consumer_supplies[] = {
23 	REGULATOR_SUPPLY("avdd", "i2c-INT347A:00"),
24 };
25 
26 static struct regulator_consumer_supply int347a_vcm_consumer_supplies[] = {
27 	REGULATOR_SUPPLY("vdd", "i2c-INT347A:00-VCM"),
28 };
29 
30 static struct regulator_consumer_supply int347a_vsio_consumer_supplies[] = {
31 	REGULATOR_SUPPLY("dovdd", "i2c-INT347A:00"),
32 	REGULATOR_SUPPLY("vsio", "i2c-INT347A:00-VCM"),
33 };
34 
35 static const struct regulator_init_data surface_go_tps68470_core_reg_init_data = {
36 	.constraints = {
37 		.min_uV = 1200000,
38 		.max_uV = 1200000,
39 		.apply_uV = true,
40 		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
41 	},
42 	.num_consumer_supplies = ARRAY_SIZE(int347a_core_consumer_supplies),
43 	.consumer_supplies = int347a_core_consumer_supplies,
44 };
45 
46 static const struct regulator_init_data surface_go_tps68470_ana_reg_init_data = {
47 	.constraints = {
48 		.min_uV = 2815200,
49 		.max_uV = 2815200,
50 		.apply_uV = true,
51 		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
52 	},
53 	.num_consumer_supplies = ARRAY_SIZE(int347a_ana_consumer_supplies),
54 	.consumer_supplies = int347a_ana_consumer_supplies,
55 };
56 
57 static const struct regulator_init_data surface_go_tps68470_vcm_reg_init_data = {
58 	.constraints = {
59 		.min_uV = 2815200,
60 		.max_uV = 2815200,
61 		.apply_uV = true,
62 		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
63 	},
64 	.num_consumer_supplies = ARRAY_SIZE(int347a_vcm_consumer_supplies),
65 	.consumer_supplies = int347a_vcm_consumer_supplies,
66 };
67 
68 /* Ensure the always-on VIO regulator has the same voltage as VSIO */
69 static const struct regulator_init_data surface_go_tps68470_vio_reg_init_data = {
70 	.constraints = {
71 		.min_uV = 1800600,
72 		.max_uV = 1800600,
73 		.apply_uV = true,
74 		.always_on = true,
75 	},
76 };
77 
78 static const struct regulator_init_data surface_go_tps68470_vsio_reg_init_data = {
79 	.constraints = {
80 		.min_uV = 1800600,
81 		.max_uV = 1800600,
82 		.apply_uV = true,
83 		.valid_ops_mask = REGULATOR_CHANGE_STATUS,
84 	},
85 	.num_consumer_supplies = ARRAY_SIZE(int347a_vsio_consumer_supplies),
86 	.consumer_supplies = int347a_vsio_consumer_supplies,
87 };
88 
89 static const struct tps68470_regulator_platform_data surface_go_tps68470_pdata = {
90 	.reg_init_data = {
91 		[TPS68470_CORE] = &surface_go_tps68470_core_reg_init_data,
92 		[TPS68470_ANA]  = &surface_go_tps68470_ana_reg_init_data,
93 		[TPS68470_VCM]  = &surface_go_tps68470_vcm_reg_init_data,
94 		[TPS68470_VIO] = &surface_go_tps68470_vio_reg_init_data,
95 		[TPS68470_VSIO] = &surface_go_tps68470_vsio_reg_init_data,
96 	},
97 };
98 
99 static struct gpiod_lookup_table surface_go_tps68470_gpios = {
100 	.dev_id = "i2c-INT347A:00",
101 	.table = {
102 		GPIO_LOOKUP("tps68470-gpio", 9, "reset", GPIO_ACTIVE_LOW),
103 		GPIO_LOOKUP("tps68470-gpio", 7, "powerdown", GPIO_ACTIVE_LOW),
104 		{ }
105 	}
106 };
107 
108 static const struct int3472_tps68470_board_data surface_go_tps68470_board_data = {
109 	.dev_name = "i2c-INT3472:05",
110 	.tps68470_gpio_lookup_table = &surface_go_tps68470_gpios,
111 	.tps68470_regulator_pdata = &surface_go_tps68470_pdata,
112 };
113 
114 static const struct int3472_tps68470_board_data surface_go3_tps68470_board_data = {
115 	.dev_name = "i2c-INT3472:01",
116 	.tps68470_gpio_lookup_table = &surface_go_tps68470_gpios,
117 	.tps68470_regulator_pdata = &surface_go_tps68470_pdata,
118 };
119 
120 static const struct dmi_system_id int3472_tps68470_board_data_table[] = {
121 	{
122 		.matches = {
123 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
124 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Go"),
125 		},
126 		.driver_data = (void *)&surface_go_tps68470_board_data,
127 	},
128 	{
129 		.matches = {
130 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
131 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Go 2"),
132 		},
133 		.driver_data = (void *)&surface_go_tps68470_board_data,
134 	},
135 	{
136 		.matches = {
137 			DMI_EXACT_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
138 			DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "Surface Go 3"),
139 		},
140 		.driver_data = (void *)&surface_go3_tps68470_board_data,
141 	},
142 	{ }
143 };
144 
145 const struct int3472_tps68470_board_data *int3472_tps68470_get_board_data(const char *dev_name)
146 {
147 	const struct int3472_tps68470_board_data *board_data;
148 	const struct dmi_system_id *match;
149 
150 	for (match = dmi_first_match(int3472_tps68470_board_data_table);
151 	     match;
152 	     match = dmi_first_match(match + 1)) {
153 		board_data = match->driver_data;
154 		if (strcmp(board_data->dev_name, dev_name) == 0)
155 			return board_data;
156 	}
157 
158 	return NULL;
159 }
160