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6be2a0ca LW |
1 | /* |
2 | * arch/arm/mach-u300/i2c.c | |
3 | * | |
fcb28d2e | 4 | * Copyright (C) 2009-2012 ST-Ericsson AB |
6be2a0ca LW |
5 | * License terms: GNU General Public License (GPL) version 2 |
6 | * | |
7 | * Register board i2c devices | |
8 | * Author: Linus Walleij <linus.walleij@stericsson.com> | |
9 | */ | |
10 | #include <linux/kernel.h> | |
11 | #include <linux/i2c.h> | |
0fd0013c | 12 | #include <linux/mfd/ab3100.h> |
3d81277b LW |
13 | #include <linux/regulator/machine.h> |
14 | #include <linux/amba/bus.h> | |
6be2a0ca LW |
15 | #include <mach/irqs.h> |
16 | ||
3d81277b LW |
17 | /* |
18 | * Initial settings of ab3100 registers. | |
19 | * Common for below LDO regulator settings are that | |
20 | * bit 7-5 controls voltage. Bit 4 turns regulator ON(1) or OFF(0). | |
21 | * Bit 3-2 controls sleep enable and bit 1-0 controls sleep mode. | |
22 | */ | |
23 | ||
24 | /* LDO_A 0x16: 2.75V, ON, SLEEP_A, SLEEP OFF GND */ | |
25 | #define LDO_A_SETTING 0x16 | |
26 | /* LDO_C 0x10: 2.65V, ON, SLEEP_A or B, SLEEP full power */ | |
27 | #define LDO_C_SETTING 0x10 | |
28 | /* LDO_D 0x10: 2.65V, ON, sleep mode not used */ | |
29 | #define LDO_D_SETTING 0x10 | |
30 | /* LDO_E 0x10: 1.8V, ON, SLEEP_A or B, SLEEP full power */ | |
31 | #define LDO_E_SETTING 0x10 | |
32 | /* LDO_E SLEEP 0x00: 1.8V, not used, SLEEP_A or B, not used */ | |
33 | #define LDO_E_SLEEP_SETTING 0x00 | |
34 | /* LDO_F 0xD0: 2.5V, ON, SLEEP_A or B, SLEEP full power */ | |
35 | #define LDO_F_SETTING 0xD0 | |
36 | /* LDO_G 0x00: 2.85V, OFF, SLEEP_A or B, SLEEP full power */ | |
37 | #define LDO_G_SETTING 0x00 | |
38 | /* LDO_H 0x18: 2.75V, ON, SLEEP_B, SLEEP full power */ | |
39 | #define LDO_H_SETTING 0x18 | |
40 | /* LDO_K 0x00: 2.75V, OFF, SLEEP_A or B, SLEEP full power */ | |
41 | #define LDO_K_SETTING 0x00 | |
42 | /* LDO_EXT 0x00: Voltage not set, OFF, not used, not used */ | |
43 | #define LDO_EXT_SETTING 0x00 | |
44 | /* BUCK 0x7D: 1.2V, ON, SLEEP_A and B, SLEEP low power */ | |
45 | #define BUCK_SETTING 0x7D | |
46 | /* BUCK SLEEP 0xAC: 1.05V, Not used, SLEEP_A and B, Not used */ | |
47 | #define BUCK_SLEEP_SETTING 0xAC | |
48 | ||
d162251d | 49 | #ifdef CONFIG_AB3100_CORE |
3d81277b LW |
50 | static struct regulator_consumer_supply supply_ldo_c[] = { |
51 | { | |
52 | .dev_name = "ab3100-codec", | |
53 | .supply = "vaudio", /* Powers the codec */ | |
54 | }, | |
55 | }; | |
56 | ||
57 | /* | |
58 | * This one needs to be a supply so we can turn it off | |
59 | * in order to shut down the system. | |
60 | */ | |
61 | static struct regulator_consumer_supply supply_ldo_d[] = { | |
62 | { | |
3d81277b LW |
63 | .supply = "vana15", /* Powers the SoC (CPU etc) */ |
64 | }, | |
65 | }; | |
66 | ||
67 | static struct regulator_consumer_supply supply_ldo_g[] = { | |
68 | { | |
69 | .dev_name = "mmci", | |
70 | .supply = "vmmc", /* Powers MMC/SD card */ | |
71 | }, | |
72 | }; | |
73 | ||
74 | static struct regulator_consumer_supply supply_ldo_h[] = { | |
75 | { | |
76 | .dev_name = "xgam_pdi", | |
77 | .supply = "vdisp", /* Powers camera, display etc */ | |
78 | }, | |
79 | }; | |
80 | ||
81 | static struct regulator_consumer_supply supply_ldo_k[] = { | |
82 | { | |
83 | .dev_name = "irda", | |
84 | .supply = "vir", /* Power IrDA */ | |
85 | }, | |
86 | }; | |
87 | ||
88 | /* | |
89 | * This is a placeholder for whoever wish to use the | |
90 | * external power. | |
91 | */ | |
92 | static struct regulator_consumer_supply supply_ldo_ext[] = { | |
93 | { | |
3d81277b LW |
94 | .supply = "vext", /* External power */ |
95 | }, | |
96 | }; | |
97 | ||
98 | /* Preset (hardware defined) voltages for these regulators */ | |
99 | #define LDO_A_VOLTAGE 2750000 | |
100 | #define LDO_C_VOLTAGE 2650000 | |
101 | #define LDO_D_VOLTAGE 2650000 | |
102 | ||
103 | static struct ab3100_platform_data ab3100_plf_data = { | |
104 | .reg_constraints = { | |
105 | /* LDO A routing and constraints */ | |
106 | { | |
107 | .constraints = { | |
108 | .name = "vrad", | |
109 | .min_uV = LDO_A_VOLTAGE, | |
110 | .max_uV = LDO_A_VOLTAGE, | |
111 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
112 | .always_on = 1, | |
113 | .boot_on = 1, | |
114 | }, | |
115 | }, | |
116 | /* LDO C routing and constraints */ | |
117 | { | |
118 | .constraints = { | |
119 | .min_uV = LDO_C_VOLTAGE, | |
120 | .max_uV = LDO_C_VOLTAGE, | |
121 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
122 | }, | |
123 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_c), | |
124 | .consumer_supplies = supply_ldo_c, | |
125 | }, | |
126 | /* LDO D routing and constraints */ | |
127 | { | |
128 | .constraints = { | |
129 | .min_uV = LDO_D_VOLTAGE, | |
130 | .max_uV = LDO_D_VOLTAGE, | |
131 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
66355299 | 132 | .valid_ops_mask = REGULATOR_CHANGE_STATUS, |
3d81277b LW |
133 | /* |
134 | * Actually this is boot_on but we need | |
135 | * to reference count it externally to | |
136 | * be able to shut down the system. | |
137 | */ | |
138 | }, | |
139 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_d), | |
140 | .consumer_supplies = supply_ldo_d, | |
141 | }, | |
142 | /* LDO E routing and constraints */ | |
143 | { | |
144 | .constraints = { | |
145 | .name = "vio", | |
146 | .min_uV = 1800000, | |
147 | .max_uV = 1800000, | |
148 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
3d81277b LW |
149 | .always_on = 1, |
150 | .boot_on = 1, | |
151 | }, | |
152 | }, | |
153 | /* LDO F routing and constraints */ | |
154 | { | |
155 | .constraints = { | |
156 | .name = "vana25", | |
157 | .min_uV = 2500000, | |
158 | .max_uV = 2500000, | |
159 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
3d81277b LW |
160 | .always_on = 1, |
161 | .boot_on = 1, | |
162 | }, | |
163 | }, | |
164 | /* LDO G routing and constraints */ | |
165 | { | |
166 | .constraints = { | |
167 | .min_uV = 1500000, | |
168 | .max_uV = 2850000, | |
169 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
170 | .valid_ops_mask = | |
171 | REGULATOR_CHANGE_VOLTAGE | | |
172 | REGULATOR_CHANGE_STATUS, | |
173 | }, | |
174 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_g), | |
175 | .consumer_supplies = supply_ldo_g, | |
176 | }, | |
177 | /* LDO H routing and constraints */ | |
178 | { | |
179 | .constraints = { | |
180 | .min_uV = 1200000, | |
181 | .max_uV = 2750000, | |
182 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
183 | .valid_ops_mask = | |
184 | REGULATOR_CHANGE_VOLTAGE | | |
185 | REGULATOR_CHANGE_STATUS, | |
186 | }, | |
187 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_h), | |
188 | .consumer_supplies = supply_ldo_h, | |
189 | }, | |
190 | /* LDO K routing and constraints */ | |
191 | { | |
192 | .constraints = { | |
193 | .min_uV = 1800000, | |
194 | .max_uV = 2750000, | |
195 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
196 | .valid_ops_mask = | |
197 | REGULATOR_CHANGE_VOLTAGE | | |
198 | REGULATOR_CHANGE_STATUS, | |
199 | }, | |
200 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_k), | |
201 | .consumer_supplies = supply_ldo_k, | |
202 | }, | |
203 | /* External regulator interface. No fixed voltage specified. | |
204 | * If we knew the voltage of the external regulator and it | |
205 | * was connected on the board, we could add the (fixed) | |
206 | * voltage for it here. | |
207 | */ | |
208 | { | |
209 | .constraints = { | |
210 | .min_uV = 0, | |
211 | .max_uV = 0, | |
212 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
213 | .valid_ops_mask = | |
214 | REGULATOR_CHANGE_STATUS, | |
215 | }, | |
216 | .num_consumer_supplies = ARRAY_SIZE(supply_ldo_ext), | |
217 | .consumer_supplies = supply_ldo_ext, | |
218 | }, | |
219 | /* Buck converter routing and constraints */ | |
220 | { | |
221 | .constraints = { | |
222 | .name = "vcore", | |
223 | .min_uV = 1200000, | |
224 | .max_uV = 1800000, | |
225 | .valid_modes_mask = REGULATOR_MODE_NORMAL, | |
226 | .valid_ops_mask = | |
a102962f | 227 | REGULATOR_CHANGE_VOLTAGE, |
3d81277b LW |
228 | .always_on = 1, |
229 | .boot_on = 1, | |
230 | }, | |
231 | }, | |
232 | }, | |
233 | .reg_initvals = { | |
234 | LDO_A_SETTING, | |
235 | LDO_C_SETTING, | |
236 | LDO_E_SETTING, | |
237 | LDO_E_SLEEP_SETTING, | |
238 | LDO_F_SETTING, | |
239 | LDO_G_SETTING, | |
240 | LDO_H_SETTING, | |
241 | LDO_K_SETTING, | |
242 | LDO_EXT_SETTING, | |
243 | BUCK_SETTING, | |
244 | BUCK_SLEEP_SETTING, | |
245 | LDO_D_SETTING, | |
246 | }, | |
247 | }; | |
d162251d MW |
248 | #endif |
249 | ||
6be2a0ca | 250 | static struct i2c_board_info __initdata bus0_i2c_board_info[] = { |
8959e743 | 251 | #ifdef CONFIG_AB3100_CORE |
6be2a0ca LW |
252 | { |
253 | .type = "ab3100", | |
254 | .addr = 0x48, | |
255 | .irq = IRQ_U300_IRQ0_EXT, | |
3d81277b | 256 | .platform_data = &ab3100_plf_data, |
6be2a0ca | 257 | }, |
d162251d MW |
258 | #else |
259 | { }, | |
260 | #endif | |
6be2a0ca LW |
261 | }; |
262 | ||
263 | static struct i2c_board_info __initdata bus1_i2c_board_info[] = { | |
6be2a0ca LW |
264 | { |
265 | .type = "fwcam", | |
266 | .addr = 0x10, | |
267 | }, | |
268 | { | |
269 | .type = "fwcam", | |
270 | .addr = 0x5d, | |
271 | }, | |
6be2a0ca LW |
272 | }; |
273 | ||
274 | void __init u300_i2c_register_board_devices(void) | |
275 | { | |
276 | i2c_register_board_info(0, bus0_i2c_board_info, | |
277 | ARRAY_SIZE(bus0_i2c_board_info)); | |
3d81277b LW |
278 | /* |
279 | * This makes the core shut down all unused regulators | |
280 | * after all the initcalls have completed. | |
281 | */ | |
282 | regulator_has_full_constraints(); | |
6be2a0ca LW |
283 | i2c_register_board_info(1, bus1_i2c_board_info, |
284 | ARRAY_SIZE(bus1_i2c_board_info)); | |
285 | } |