summaryrefslogtreecommitdiff
path: root/arch/arm/mach-omap2/pmic-cpcap.c
blob: 668dc84fd31e0435f041b0f672e4d295eb185e92 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
// SPDX-License-Identifier: GPL-2.0-only
/*
 * pmic-cpcap.c - CPCAP-specific functions for the OPP code
 *
 * Adapted from Motorola Mapphone Android Linux kernel
 * Copyright (C) 2011 Motorola, Inc.
 */

#include <linux/err.h>
#include <linux/io.h>
#include <linux/kernel.h>

#include "soc.h"
#include "pm.h"
#include "voltage.h"

#include <linux/init.h>
#include "vc.h"

/**
 * omap_cpcap_vsel_to_vdc - convert CPCAP VSEL value to microvolts DC
 * @vsel: CPCAP VSEL value to convert
 *
 * Returns the microvolts DC that the CPCAP PMIC should generate when
 * programmed with @vsel.
 */
static unsigned long omap_cpcap_vsel_to_uv(unsigned char vsel)
{
	if (vsel > 0x44)
		vsel = 0x44;
	return (((vsel * 125) + 6000)) * 100;
}

/**
 * omap_cpcap_uv_to_vsel - convert microvolts DC to CPCAP VSEL value
 * @uv: microvolts DC to convert
 *
 * Returns the VSEL value necessary for the CPCAP PMIC to
 * generate an output voltage equal to or greater than @uv microvolts DC.
 */
static unsigned char omap_cpcap_uv_to_vsel(unsigned long uv)
{
	if (uv < 600000)
		uv = 600000;
	else if (uv > 1450000)
		uv = 1450000;
	return DIV_ROUND_UP(uv - 600000, 12500);
}

static struct omap_voltdm_pmic omap_cpcap_core = {
	.slew_rate = 4000,
	.step_size = 12500,
	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
	.vddmin = 900000,
	.vddmax = 1350000,
	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
	.i2c_slave_addr = 0x02,
	.volt_reg_addr = 0x00,
	.cmd_reg_addr = 0x01,
	.i2c_high_speed = false,
	.vsel_to_uv = omap_cpcap_vsel_to_uv,
	.uv_to_vsel = omap_cpcap_uv_to_vsel,
};

static struct omap_voltdm_pmic omap_cpcap_iva = {
	.slew_rate = 4000,
	.step_size = 12500,
	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
	.vddmin = 900000,
	.vddmax = 1375000,
	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
	.i2c_slave_addr = 0x44,
	.volt_reg_addr = 0x0,
	.cmd_reg_addr = 0x01,
	.i2c_high_speed = false,
	.vsel_to_uv = omap_cpcap_vsel_to_uv,
	.uv_to_vsel = omap_cpcap_uv_to_vsel,
};

/**
 * omap_max8952_vsel_to_vdc - convert MAX8952 VSEL value to microvolts DC
 * @vsel: MAX8952 VSEL value to convert
 *
 * Returns the microvolts DC that the MAX8952 Regulator should generate when
 * programmed with @vsel.
 */
static unsigned long omap_max8952_vsel_to_uv(unsigned char vsel)
{
	if (vsel > 0x3F)
		vsel = 0x3F;
	return (((vsel * 100) + 7700)) * 100;
}

/**
 * omap_max8952_uv_to_vsel - convert microvolts DC to MAX8952 VSEL value
 * @uv: microvolts DC to convert
 *
 * Returns the VSEL value necessary for the MAX8952 Regulator to
 * generate an output voltage equal to or greater than @uv microvolts DC.
 */
static unsigned char omap_max8952_uv_to_vsel(unsigned long uv)
{
	if (uv < 770000)
		uv = 770000;
	else if (uv > 1400000)
		uv = 1400000;
	return DIV_ROUND_UP(uv - 770000, 10000);
}

static struct omap_voltdm_pmic omap443x_max8952_mpu = {
	.slew_rate = 16000,
	.step_size = 10000,
	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
	.vddmin = 900000,
	.vddmax = 1400000,
	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
	.i2c_slave_addr = 0x60,
	.volt_reg_addr = 0x03,
	.cmd_reg_addr = 0x03,
	.i2c_high_speed = false,
	.vsel_to_uv = omap_max8952_vsel_to_uv,
	.uv_to_vsel = omap_max8952_uv_to_vsel,
};

/**
 * omap_fan5355_vsel_to_vdc - convert FAN535503 VSEL value to microvolts DC
 * @vsel: FAN535503 VSEL value to convert
 *
 * Returns the microvolts DC that the FAN535503 Regulator should generate when
 * programmed with @vsel.
 */
static unsigned long omap_fan535503_vsel_to_uv(unsigned char vsel)
{
	/* Extract bits[5:0] */
	vsel &= 0x3F;

	return (((vsel * 125) + 7500)) * 100;
}

/**
 * omap_fan535508_vsel_to_vdc - convert FAN535508 VSEL value to microvolts DC
 * @vsel: FAN535508 VSEL value to convert
 *
 * Returns the microvolts DC that the FAN535508 Regulator should generate when
 * programmed with @vsel.
 */
static unsigned long omap_fan535508_vsel_to_uv(unsigned char vsel)
{
	/* Extract bits[5:0] */
	vsel &= 0x3F;

	if (vsel > 0x37)
		vsel = 0x37;
	return (((vsel * 125) + 7500)) * 100;
}


/**
 * omap_fan535503_uv_to_vsel - convert microvolts DC to FAN535503 VSEL value
 * @uv: microvolts DC to convert
 *
 * Returns the VSEL value necessary for the MAX8952 Regulator to
 * generate an output voltage equal to or greater than @uv microvolts DC.
 */
static unsigned char omap_fan535503_uv_to_vsel(unsigned long uv)
{
	unsigned char vsel;
	if (uv < 750000)
		uv = 750000;
	else if (uv > 1537500)
		uv = 1537500;

	vsel = DIV_ROUND_UP(uv - 750000, 12500);
	return vsel | 0xC0;
}

/**
 * omap_fan535508_uv_to_vsel - convert microvolts DC to FAN535508 VSEL value
 * @uv: microvolts DC to convert
 *
 * Returns the VSEL value necessary for the MAX8952 Regulator to
 * generate an output voltage equal to or greater than @uv microvolts DC.
 */
static unsigned char omap_fan535508_uv_to_vsel(unsigned long uv)
{
	unsigned char vsel;
	if (uv < 750000)
		uv = 750000;
	else if (uv > 1437500)
		uv = 1437500;

	vsel = DIV_ROUND_UP(uv - 750000, 12500);
	return vsel | 0xC0;
}

/* fan5335-core */
static struct omap_voltdm_pmic omap4_fan_core = {
	.slew_rate = 4000,
	.step_size = 12500,
	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
	.vddmin = 850000,
	.vddmax = 1375000,
	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
	.i2c_slave_addr = 0x4A,
	.i2c_high_speed = false,
	.volt_reg_addr = 0x01,
	.cmd_reg_addr = 0x01,
	.vsel_to_uv = omap_fan535508_vsel_to_uv,
	.uv_to_vsel = omap_fan535508_uv_to_vsel,
};

/* fan5335 iva */
static struct omap_voltdm_pmic omap4_fan_iva = {
	.slew_rate = 4000,
	.step_size = 12500,
	.vp_erroroffset = OMAP4_VP_CONFIG_ERROROFFSET,
	.vp_vstepmin = OMAP4_VP_VSTEPMIN_VSTEPMIN,
	.vp_vstepmax = OMAP4_VP_VSTEPMAX_VSTEPMAX,
	.vddmin = 850000,
	.vddmax = 1375000,
	.vp_timeout_us = OMAP4_VP_VLIMITTO_TIMEOUT_US,
	.i2c_slave_addr = 0x48,
	.volt_reg_addr = 0x01,
	.cmd_reg_addr = 0x01,
	.i2c_high_speed = false,
	.vsel_to_uv = omap_fan535503_vsel_to_uv,
	.uv_to_vsel = omap_fan535503_uv_to_vsel,
};

int __init omap4_cpcap_init(void)
{
	struct voltagedomain *voltdm;

	if (!of_find_compatible_node(NULL, NULL, "motorola,cpcap"))
		return -ENODEV;

	voltdm = voltdm_lookup("mpu");
	omap_voltage_register_pmic(voltdm, &omap443x_max8952_mpu);

	if (of_machine_is_compatible("motorola,droid-bionic")) {
		voltdm = voltdm_lookup("core");
		omap_voltage_register_pmic(voltdm, &omap_cpcap_core);

		voltdm = voltdm_lookup("iva");
		omap_voltage_register_pmic(voltdm, &omap_cpcap_iva);
	} else {
		voltdm = voltdm_lookup("core");
		omap_voltage_register_pmic(voltdm, &omap4_fan_core);

		voltdm = voltdm_lookup("iva");
		omap_voltage_register_pmic(voltdm, &omap4_fan_iva);
	}

	return 0;
}

static int __init cpcap_late_init(void)
{
	omap4_vc_set_pmic_signaling(PWRDM_POWER_RET);

	return 0;
}
omap_late_initcall(cpcap_late_init);