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authorCarlo Caione <carlo@caione.org>2014-04-11 05:38:10 -0400
committerMark Brown <broonie@linaro.org>2014-04-14 12:00:34 -0400
commitdfe7a1b058bbb29fa524ca7cf05aa13ff52983f4 (patch)
treefaf786b045f9b066927ad6ef17ae69181095d7ad
parentc9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff)
regulator: AXP20x: Add support for regulators subsystem
AXP202 and AXP209 come with two synchronous step-down DC-DCs and five LDOs. This patch introduces basic support for those regulators. Signed-off-by: Carlo Caione <carlo@caione.org> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat
-rw-r--r--drivers/regulator/Kconfig7
-rw-r--r--drivers/regulator/Makefile1
-rw-r--r--drivers/regulator/axp20x-regulator.c285
3 files changed, 293 insertions, 0 deletions
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 903eb37f047a..65e5d7d1b35a 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -139,6 +139,13 @@ config REGULATOR_AS3722
139 AS3722 PMIC. This will enable support for all the software 139 AS3722 PMIC. This will enable support for all the software
140 controllable DCDC/LDO regulators. 140 controllable DCDC/LDO regulators.
141 141
142config REGULATOR_AXP20X
143 tristate "X-POWERS AXP20X PMIC Regulators"
144 depends on MFD_AXP20X
145 help
146 This driver provides support for the voltage regulators on the
147 AXP20X PMIC.
148
142config REGULATOR_BCM590XX 149config REGULATOR_BCM590XX
143 tristate "Broadcom BCM590xx PMU Regulators" 150 tristate "Broadcom BCM590xx PMU Regulators"
144 depends on MFD_BCM590XX 151 depends on MFD_BCM590XX
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 12ef277a48b4..c14696b290c0 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_REGULATOR_ANATOP) += anatop-regulator.o
20obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o 20obj-$(CONFIG_REGULATOR_ARIZONA) += arizona-micsupp.o arizona-ldo1.o
21obj-$(CONFIG_REGULATOR_AS3711) += as3711-regulator.o 21obj-$(CONFIG_REGULATOR_AS3711) += as3711-regulator.o
22obj-$(CONFIG_REGULATOR_AS3722) += as3722-regulator.o 22obj-$(CONFIG_REGULATOR_AS3722) += as3722-regulator.o
23obj-$(CONFIG_REGULATOR_AXP20X) += axp20x-regulator.o
23obj-$(CONFIG_REGULATOR_BCM590XX) += bcm590xx-regulator.o 24obj-$(CONFIG_REGULATOR_BCM590XX) += bcm590xx-regulator.o
24obj-$(CONFIG_REGULATOR_DA903X) += da903x.o 25obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
25obj-$(CONFIG_REGULATOR_DA9052) += da9052-regulator.o 26obj-$(CONFIG_REGULATOR_DA9052) += da9052-regulator.o
diff --git a/drivers/regulator/axp20x-regulator.c b/drivers/regulator/axp20x-regulator.c
new file mode 100644
index 000000000000..78a29e60f53a
--- /dev/null
+++ b/drivers/regulator/axp20x-regulator.c
@@ -0,0 +1,285 @@
1/*
2 * AXP20x regulators driver.
3 *
4 * Copyright (C) 2013 Carlo Caione <carlo@caione.org>
5 *
6 * This file is subject to the terms and conditions of the GNU General
7 * Public License. See the file "COPYING" in the main directory of this
8 * archive for more details.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16#include <linux/err.h>
17#include <linux/init.h>
18#include <linux/module.h>
19#include <linux/of.h>
20#include <linux/of_device.h>
21#include <linux/platform_device.h>
22#include <linux/regmap.h>
23#include <linux/mfd/axp20x.h>
24#include <linux/regulator/driver.h>
25#include <linux/regulator/of_regulator.h>
26
27#define AXP20X_IO_ENABLED 0x03
28#define AXP20X_IO_DISABLED 0x07
29
30#define AXP20X_WORKMODE_DCDC2_MASK BIT(2)
31#define AXP20X_WORKMODE_DCDC3_MASK BIT(1)
32
33#define AXP20X_FREQ_DCDC_MASK 0x0f
34
35#define AXP20X_DESC_IO(_id, _supply, _min, _max, _step, _vreg, _vmask, _ereg, \
36 _emask, _enable_val, _disable_val) \
37 [AXP20X_##_id] = { \
38 .name = #_id, \
39 .supply_name = (_supply), \
40 .type = REGULATOR_VOLTAGE, \
41 .id = AXP20X_##_id, \
42 .n_voltages = (((_max) - (_min)) / (_step) + 1), \
43 .owner = THIS_MODULE, \
44 .min_uV = (_min) * 1000, \
45 .uV_step = (_step) * 1000, \
46 .vsel_reg = (_vreg), \
47 .vsel_mask = (_vmask), \
48 .enable_reg = (_ereg), \
49 .enable_mask = (_emask), \
50 .enable_val = (_enable_val), \
51 .disable_val = (_disable_val), \
52 .ops = &axp20x_ops, \
53 }
54
55#define AXP20X_DESC(_id, _supply, _min, _max, _step, _vreg, _vmask, _ereg, \
56 _emask) \
57 [AXP20X_##_id] = { \
58 .name = #_id, \
59 .supply_name = (_supply), \
60 .type = REGULATOR_VOLTAGE, \
61 .id = AXP20X_##_id, \
62 .n_voltages = (((_max) - (_min)) / (_step) + 1), \
63 .owner = THIS_MODULE, \
64 .min_uV = (_min) * 1000, \
65 .uV_step = (_step) * 1000, \
66 .vsel_reg = (_vreg), \
67 .vsel_mask = (_vmask), \
68 .enable_reg = (_ereg), \
69 .enable_mask = (_emask), \
70 .ops = &axp20x_ops, \
71 }
72
73#define AXP20X_DESC_FIXED(_id, _supply, _volt) \
74 [AXP20X_##_id] = { \
75 .name = #_id, \
76 .supply_name = (_supply), \
77 .type = REGULATOR_VOLTAGE, \
78 .id = AXP20X_##_id, \
79 .n_voltages = 1, \
80 .owner = THIS_MODULE, \
81 .min_uV = (_volt) * 1000, \
82 .ops = &axp20x_ops_fixed \
83 }
84
85#define AXP20X_DESC_TABLE(_id, _supply, _table, _vreg, _vmask, _ereg, _emask) \
86 [AXP20X_##_id] = { \
87 .name = #_id, \
88 .supply_name = (_supply), \
89 .type = REGULATOR_VOLTAGE, \
90 .id = AXP20X_##_id, \
91 .n_voltages = ARRAY_SIZE(_table), \
92 .owner = THIS_MODULE, \
93 .vsel_reg = (_vreg), \
94 .vsel_mask = (_vmask), \
95 .enable_reg = (_ereg), \
96 .enable_mask = (_emask), \
97 .volt_table = (_table), \
98 .ops = &axp20x_ops_table, \
99 }
100
101static const int axp20x_ldo4_data[] = { 1250000, 1300000, 1400000, 1500000, 1600000,
102 1700000, 1800000, 1900000, 2000000, 2500000,
103 2700000, 2800000, 3000000, 3100000, 3200000,
104 3300000 };
105
106static struct regulator_ops axp20x_ops_fixed = {
107 .list_voltage = regulator_list_voltage_linear,
108};
109
110static struct regulator_ops axp20x_ops_table = {
111 .set_voltage_sel = regulator_set_voltage_sel_regmap,
112 .get_voltage_sel = regulator_get_voltage_sel_regmap,
113 .list_voltage = regulator_list_voltage_table,
114 .enable = regulator_enable_regmap,
115 .disable = regulator_disable_regmap,
116 .is_enabled = regulator_is_enabled_regmap,
117};
118
119static struct regulator_ops axp20x_ops = {
120 .set_voltage_sel = regulator_set_voltage_sel_regmap,
121 .get_voltage_sel = regulator_get_voltage_sel_regmap,
122 .list_voltage = regulator_list_voltage_linear,
123 .enable = regulator_enable_regmap,
124 .disable = regulator_disable_regmap,
125 .is_enabled = regulator_is_enabled_regmap,
126};
127
128static const struct regulator_desc axp20x_regulators[] = {
129 AXP20X_DESC(DCDC2, "vin2", 700, 2275, 25, AXP20X_DCDC2_V_OUT, 0x3f,
130 AXP20X_PWR_OUT_CTRL, 0x10),
131 AXP20X_DESC(DCDC3, "vin3", 700, 3500, 25, AXP20X_DCDC3_V_OUT, 0x7f,
132 AXP20X_PWR_OUT_CTRL, 0x02),
133 AXP20X_DESC_FIXED(LDO1, "acin", 1300),
134 AXP20X_DESC(LDO2, "ldo24in", 1800, 3300, 100, AXP20X_LDO24_V_OUT, 0xf0,
135 AXP20X_PWR_OUT_CTRL, 0x04),
136 AXP20X_DESC(LDO3, "ldo3in", 700, 3500, 25, AXP20X_LDO3_V_OUT, 0x7f,
137 AXP20X_PWR_OUT_CTRL, 0x40),
138 AXP20X_DESC_TABLE(LDO4, "ldo24in", axp20x_ldo4_data, AXP20X_LDO24_V_OUT, 0x0f,
139 AXP20X_PWR_OUT_CTRL, 0x08),
140 AXP20X_DESC_IO(LDO5, "ldo5in", 1800, 3300, 100, AXP20X_LDO5_V_OUT, 0xf0,
141 AXP20X_GPIO0_CTRL, 0x07, AXP20X_IO_ENABLED,
142 AXP20X_IO_DISABLED),
143};
144