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authorKyungmin Park <kyungmin.park@samsung.com>2010-06-16 03:04:16 -0400
committerLiam Girdwood <lrg@slimlogic.co.uk>2010-08-11 06:38:00 -0400
commit156f252857dfd81f03d77d09e33b5f7d2b113e2b (patch)
tree1614c00b1996ae5a805d9d27661026796d1403fa
parent51bd6943cd760a55f655830b3f7dca8a06b54c73 (diff)
drivers: regulator: add Maxim 8998 driver
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> This patch adds voltage regulator driver for Maxim 8998 chip. This chip is used on Samsung Aquila and GONI boards and provides following functionalities: - 4 BUCK voltage converters, 17 LDO power regulators and 5 other power controllers - battery charger This patch adds basic driver for voltage regulators and MAX 8998 MFD core. Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Samuel Ortiz <sameo@linux.intel.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat
-rw-r--r--drivers/mfd/Kconfig10
-rw-r--r--drivers/mfd/Makefile1
-rw-r--r--drivers/mfd/max8998.c160
-rw-r--r--drivers/regulator/Kconfig9
-rw-r--r--drivers/regulator/Makefile1
-rw-r--r--drivers/regulator/max8998.c610
-rw-r--r--include/linux/mfd/max8998-private.h112
-rw-r--r--include/linux/mfd/max8998.h78
8 files changed, 981 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 9da0e504bbe9..ad61a9e8e04e 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -252,6 +252,16 @@ config MFD_MAX8925
252 accessing the device, additional drivers must be enabled in order 252 accessing the device, additional drivers must be enabled in order
253 to use the functionality of the device. 253 to use the functionality of the device.
254 254
255config MFD_MAX8998
256 bool "Maxim Semiconductor MAX8998 PMIC Support"
257 depends on I2C=y
258 select MFD_CORE
259 help
260 Say yes here to support for Maxim Semiconductor MAX8998. This is
261 a Power Management IC. This driver provies common support for
262 accessing the device, additional drivers must be enabled in order
263 to use the functionality of the device.
264
255config MFD_WM8400 265config MFD_WM8400
256 tristate "Support Wolfson Microelectronics WM8400" 266 tristate "Support Wolfson Microelectronics WM8400"
257 select MFD_CORE 267 select MFD_CORE
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index fb503e77dc60..a362ccfe8997 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -56,6 +56,7 @@ obj-$(CONFIG_UCB1400_CORE) += ucb1400_core.o
56obj-$(CONFIG_PMIC_DA903X) += da903x.o 56obj-$(CONFIG_PMIC_DA903X) += da903x.o
57max8925-objs := max8925-core.o max8925-i2c.o 57max8925-objs := max8925-core.o max8925-i2c.o
58obj-$(CONFIG_MFD_MAX8925) += max8925.o 58obj-$(CONFIG_MFD_MAX8925) += max8925.o
59obj-$(CONFIG_MFD_MAX8998) += max8998.o
59 60
60pcf50633-objs := pcf50633-core.o pcf50633-irq.o 61pcf50633-objs := pcf50633-core.o pcf50633-irq.o
61obj-$(CONFIG_MFD_PCF50633) += pcf50633.o 62obj-$(CONFIG_MFD_PCF50633) += pcf50633.o
diff --git a/drivers/mfd/max8998.c b/drivers/mfd/max8998.c
new file mode 100644
index 000000000000..0d68de21ea9e
--- /dev/null
+++ b/drivers/mfd/max8998.c
@@ -0,0 +1,160 @@
1/*
2 * max8698.c - mfd core driver for the Maxim 8998
3 *
4 * Copyright (C) 2009-2010 Samsung Electronics
5 * Kyungmin Park <kyungmin.park@samsung.com>
6 * Marek Szyprowski <m.szyprowski@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#include <linux/module.h>
24#include <linux/moduleparam.h>
25#include <linux/init.h>
26#include <linux/slab.h>
27#include <linux/i2c.h>
28#include <linux/mutex.h>
29#include <linux/mfd/core.h>
30#include <linux/mfd/max8998.h>
31#include <linux/mfd/max8998-private.h>
32
33static struct mfd_cell max8998_devs[] = {
34 {
35 .name = "max8998-pmic",
36 }
37};
38
39static int max8998_i2c_device_read(struct max8998_dev *max8998, u8 reg, u8 *dest)
40{
41 struct i2c_client *client = max8998->i2c_client;
42 int ret;
43
44 mutex_lock(&max8998->iolock);
45 ret = i2c_smbus_read_byte_data(client, reg);
46 mutex_unlock(&max8998->iolock);
47 if (ret < 0)
48 return ret;
49
50 ret &= 0xff;
51 *dest = ret;
52 return 0;
53}
54
55static int max8998_i2c_device_write(struct max8998_dev *max8998, u8 reg, u8 value)
56{
57 struct i2c_client *client = max8998->i2c_client;
58 int ret;
59
60 mutex_lock(&max8998->iolock);
61 ret = i2c_smbus_write_byte_data(client, reg, value);
62 mutex_unlock(&max8998->iolock);
63 return ret;
64}
65
66static int max8998_i2c_device_update(struct max8998_dev *max8998, u8 reg,
67 u8 val, u8 mask)
68{
69 struct i2c_client *client = max8998->i2c_client;
70 int ret;
71
72 mutex_lock(&max8998->iolock);
73 ret = i2c_smbus_read_byte_data(client, reg);
74 if (ret >= 0) {
75 u8 old_val = ret & 0xff;
76 u8 new_val = (val & mask) | (old_val & (~mask));
77 ret = i2c_smbus_write_byte_data(client, reg, new_val);
78 if (ret >= 0)
79 ret = 0;
80 }
81 mutex_unlock(&max8998->iolock);
82 return ret;
83}
84
85static int max8998_i2c_probe(struct i2c_client *i2c,
86 const struct i2c_device_id *id)
87{
88 struct max8998_dev *max8998;
89 int ret = 0;
90
91 max8998 = kzalloc(sizeof(struct max8998_dev), GFP_KERNEL);
92 if (max8998 == NULL) {
93 kfree(i2c);
94 return -ENOMEM;
95 }
96
97 i2c_set_clientdata(i2c, max8998);
98 max8998->dev = &i2c->dev;
99 max8998->i2c_client = i2c;
100 max8998->dev_read = max8998_i2c_device_read;
101 max8998->dev_write = max8998_i2c_device_write;
102 max8998->dev_update = max8998_i2c_device_update;
103 mutex_init(&max8998->iolock);
104
105 ret = mfd_add_devices(max8998->dev, -1,
106 max8998_devs, ARRAY_SIZE(max8998_devs),
107 NULL, 0);
108 if (ret < 0)
109 goto err;
110
111 return ret;
112
113err:
114 mfd_remove_devices(max8998->dev);
115 kfree(max8998);
116 return ret;
117}
118
119static int max8998_i2c_remove(struct i2c_client *i2c)
120{
121 struct max8998_dev *max8998 = i2c_get_clientdata(i2c);
122
123 mfd_remove_devices(max8998->dev);
124 kfree(max8998);
125
126 return 0;
127}
128
129static const struct i2c_device_id max8998_i2c_id[] = {
130 { "max8998", 0 },
131 { }
132};
133MODULE_DEVICE_TABLE(i2c, max8998_i2c_id);
134
135static struct i2c_driver max8998_i2c_driver = {
136 .driver = {
137 .name = "max8998",
138 .owner = THIS_MODULE,
139 },
140 .probe = max8998_i2c_probe,
141 .remove = max8998_i2c_remove,
142 .id_table = max8998_i2c_id,
143};
144
145static int __init max8998_i2c_init(void)
146{
147 return i2c_add_driver(&max8998_i2c_driver);
148}
149/* init early so consumer devices can complete system boot */
150subsys_initcall(max8998_i2c_init);
151
152static void __exit max8998_i2c_exit(void)
153{
154 i2c_del_driver(&max8998_i2c_driver);
155}
156module_exit(max8998_i2c_exit);
157
158MODULE_DESCRIPTION("MAXIM 8998 multi-function core driver");
159MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>");
160MODULE_LICENSE("GPL");
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 6bf56c93a336..671b81a39482 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -100,6 +100,15 @@ config REGULATOR_MAX8925
100 help 100 help
101 Say y here to support the voltage regulaltor of Maxim MAX8925 PMIC. 101 Say y here to support the voltage regulaltor of Maxim MAX8925 PMIC.
102 102
103config REGULATOR_MAX8998
104 tristate "Maxim 8998 voltage regulator"
105 depends on I2C
106 default n
107 help
108 This driver controls a Maxim 8998 voltage output regulator
109 via I2C bus. The provided regulator is suitable for S3C6410
110 and S5PC1XX chips to control VCC_CORE and VCC_USIM voltages.
111
103config REGULATOR_TWL4030 112config REGULATOR_TWL4030
104 bool "TI TWL4030/TWL5030/TWL6030/TPS695x0 PMIC" 113 bool "TI TWL4030/TWL5030/TWL6030/TPS695x0 PMIC"
105 depends on TWL4030_CORE 114 depends on TWL4030_CORE
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 451a14a873f6..74a4638bd9a6 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -17,6 +17,7 @@ obj-$(CONFIG_REGULATOR_TWL4030) += twl-regulator.o
17obj-$(CONFIG_REGULATOR_MAX8649) += max8649.o 17obj-$(CONFIG_REGULATOR_MAX8649) += max8649.o
18obj-$(CONFIG_REGULATOR_MAX8660) += max8660.o 18obj-$(CONFIG_REGULATOR_MAX8660) += max8660.o
19obj-$(CONFIG_REGULATOR_MAX8925) += max8925-regulator.o 19obj-$(CONFIG_REGULATOR_MAX8925) += max8925-regulator.o
20obj-$(CONFIG_REGULATOR_MAX8998) += max8998.o
20obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o 21obj-$(CONFIG_REGULATOR_WM831X) += wm831x-dcdc.o
21obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o 22obj-$(CONFIG_REGULATOR_WM831X) += wm831x-isink.o
22obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o 23obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o
diff --git a/drivers/regulator/max8998.c b/drivers/regulator/max8998.c
new file mode 100644
index 000000000000..174fd1957ae4
--- /dev/null
+++ b/drivers/regulator/max8998.c
@@ -0,0 +1,610 @@
1/*
2 * max8998.c - Voltage regulator driver for the Maxim 8998
3 *
4 * Copyright (C) 2009-2010 Samsung Electronics
5 * Kyungmin Park <kyungmin.park@samsung.com>
6 * Marek Szyprowski <m.szyprowski@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#include <linux/module.h>
24#include <linux/init.h>
25#include <linux/i2c.h>
26#include <linux/err.h>
27#include <linux/gpio.h>
28#include <linux/slab.h>
29#include <linux/interrupt.h>
30#include <linux/mutex.h>
31#include <linux/platform_device.h>
32#include <linux/regulator/driver.h>
33#include <linux/mfd/max8998.h>
34#include <linux/mfd/max8998-private.h>
35
36struct max8998_data {
37 struct device *dev;
38 struct max8998_dev *iodev;
39 int num_regulators;
40 struct regulator_dev **rdev;
41};
42
43struct voltage_map_desc {
44 int min;
45 int max;
46 int step;
47};
48
49/* Voltage maps */
50static const struct voltage_map_desc ldo23_voltage_map_desc = {
51 .min = 800, .step = 50, .max = 1300,
52};
53static const struct voltage_map_desc ldo456711_voltage_map_desc = {
54 .min = 1600, .step = 100, .max = 3600,
55};
56static const struct voltage_map_desc ldo8_voltage_map_desc = {
57 .min = 3000, .step = 100, .max = 3600,
58};
59static const struct voltage_map_desc ldo9_voltage_map_desc = {
60 .min = 2800, .step = 100, .max = 3100,
61};
62static const struct voltage_map_desc ldo10_voltage_map_desc = {
63 .min = 950, .step = 50, .max = 1300,
64};
65static const struct voltage_map_desc ldo1213_voltage_map_desc = {
66 .min = 800, .step = 100, .max = 3300,
67};
68static const struct voltage_map_desc ldo1415_voltage_map_desc = {
69 .min = 1200, .step = 100, .max = 3300,
70};
71static const struct voltage_map_desc ldo1617_voltage_map_desc = {
72 .min = 1600, .step = 100, .max = 3600,
73};
74static const struct voltage_map_desc buck12_voltage_map_desc = {
75 .min = 750, .step = 25, .max = 1525,
76};
77static const struct voltage_map_desc buck3_voltage_map_desc = {
78 .min = 1600, .step = 100, .max = 3600,
79};
80static const struct voltage_map_desc buck4_voltage_map_desc = {
81 .min = 800, .step = 100, .max = 2300,
82};
83
84static const struct voltage_map_desc *ldo_voltage_map[] = {
85 NULL,
86 NULL,
87 &ldo23_voltage_map_desc, /* LDO2 */
88 &ldo23_voltage_map_desc, /* LDO3 */
89 &ldo456711_voltage_map_desc, /* LDO4 */
90 &ldo456711_voltage_map_desc, /* LDO5 */
91 &ldo456711_voltage_map_desc, /* LDO6 */
92 &ldo456711_voltage_map_desc, /* LDO7 */
93 &ldo8_voltage_map_desc, /* LDO8 */
94 &ldo9_voltage_map_desc, /* LDO9 */
95 &ldo10_voltage_map_desc, /* LDO10 */
96 &ldo456711_voltage_map_desc, /* LDO11 */
97 &ldo1213_voltage_map_desc, /* LDO12 */
98 &ldo1213_voltage_map_desc, /* LDO13 */
99 &ldo1415_voltage_map_desc, /* LDO14 */
100 &ldo1415_voltage_map_desc, /* LDO15 */
101 &ldo1617_voltage_map_desc, /* LDO16 */
102 &ldo1617_voltage_map_desc, /* LDO17 */
103 &buck12_voltage_map_desc, /* BUCK1 */
104 &buck12_voltage_map_desc, /* BUCK2 */
105 &buck3_voltage_map_desc, /* BUCK3 */
106 &buck4_voltage_map_desc, /* BUCK4 */
107};
108
109static inline int max8998_get_ldo(struct regulator_dev *rdev)
110{
111 return rdev_get_id(rdev);
112}
113
114static int max8998_list_voltage(struct regulator_dev *rdev,
115 unsigned int selector)
116{
117 const struct voltage_map_desc *desc;
118 int ldo = max8998_get_ldo(rdev);
119 int val;
120
121 if (ldo > ARRAY_SIZE(ldo_voltage_map))
122 return -EINVAL;
123
124 desc = ldo_voltage_map[ldo];
125 if (desc == NULL)
126 return -EINVAL;
127
128 val = desc->min + desc->step * selector;
129 if (val > desc->max)
130 return -EINVAL;
131
132 return val * 1000;
133}
134
135static int max8998_get_enable_register(struct regulator_dev *rdev,
136 int *reg, int *shift)
137{
138 int ldo = max8998_get_ldo(rdev);
139
140 switch (ldo) {
141 case MAX8998_LDO2 ... MAX8998_LDO5:
142 *reg = MAX8998_REG_ONOFF1;
143 *shift = 3 - (ldo - MAX8998_LDO2);
144 break;
145 case MAX8998_LDO6 ... MAX8998_LDO13:
146 *reg = MAX8998_REG_ONOFF2;
147 *shift = 7 - (ldo - MAX8998_LDO6);
148 break;
149 case MAX8998_LDO14 ... MAX8998_LDO17:
150 *reg = MAX8998_REG_ONOFF3;
151 *shift = 7 - (ldo - MAX8998_LDO14);
152 break;
153 case MAX8998_BUCK1 ... MAX8998_BUCK4:
154 *reg = MAX8998_REG_ONOFF1;
155 *shift = 7 - (ldo - MAX8998_BUCK1);
156 break;
157 case MAX8998_EN32KHZ_AP ... MAX8998_ENVICHG:
158 *reg = MAX8998_REG_ONOFF4;
159 *shift = 7 - (ldo - MAX8998_EN32KHZ_AP);
160 break;
161 case MAX8998_ESAFEOUT1 ... MAX8998_ESAFEOUT2:
162 *reg = MAX8998_REG_CHGR2;
163 *shift = 7 - (ldo - MAX8998_ESAFEOUT1);
164 break;
165 default:
166 return -EINVAL;
167 }
168
169 return 0;
170}
171
172static int max8998_ldo_is_enabled(struct regulator_dev *rdev)
173{
174 struct max8998_data *max8998 = rdev_get_drvdata(rdev);
175 int ret, reg, shift = 8;
176 u8 val;
177
178 ret = max8998_get_enable_register(rdev, &reg, &shift);
179 if (ret)
180 return ret;
181
182 ret = max8998_read_reg(max8998->iodev, reg, &val);
183 if (ret)
184 return ret;
185
186 return val & (1 << shift);
187}
188
189static int max8998_ldo_enable(struct regulator_dev *rdev)
190{
191 struct max8998_data *max8998 = rdev_get_drvdata(rdev);
192 int reg, shift = 8, ret;
193
194 ret = max8998_get_enable_register(rdev, &reg, &shift);
195 if (ret)
196 return ret;
197
198 return max8998_update_reg(max8998->iodev, reg, 1<<shift, 1<<shift);
199}
200
201static int max8998_ldo_disable(struct regulator_dev *rdev)
202{
203 struct max8998_data *max8998 = rdev_get_drvdata(rdev);
204 int reg, shift = 8, ret;
205
206 ret = max8998_get_enable_register(rdev, &reg, &shift);
207 if (ret)
208 return ret;
209
210 return max8998_update_reg(max8998->iodev, reg, 0, 1<<shift);
211}
212
213static int max8998_get_voltage_register(struct regulator_dev *rdev,
214 int *_reg, int *_shift, int *_mask)
215{
216 int ldo = max8998_get_ldo(rdev);
217 int reg, shift = 0, mask = 0xff;
218
219 switch (ldo) {
220 case MAX8998_LDO2 ... MAX8998_LDO3:
221 reg = MAX8998_REG_LDO2_LDO3;
222 mask = 0xf;
223 if (ldo == MAX8998_LDO2)
224 shift = 4;
225 else
226 shift = 0;
227 break;
228 case MAX8998_LDO4 ... MAX8998_LDO7:
229 reg = MAX8998_REG_LDO4 + (ldo - MAX8998_LDO4);
230 break;
231 case MAX8998_LDO8 ... MAX8998_LDO9:
232 reg = MAX8998_REG_LDO8_LDO9;
233 mask = 0xf;
234 if (ldo == MAX8998_LDO8)
235 shift = 4;
236 else
237 shift = 0;
238 break;
239 case MAX8998_LDO10 ... MAX8998_LDO11:
240 reg = MAX8998_REG_LDO10_LDO11;
241 if (ldo == MAX8998_LDO10) {
242 shift = 5;
243 mask = 0x7;
244 } else {
245 shift = 0;
246 mask = 0x1f;
247 }
248 break;
249 case MAX8998_LDO12 ... MAX8998_LDO17:
250 reg = MAX8998_REG_LDO12 + (ldo - MAX8998_LDO12);
251 break;
252 case MAX8998_BUCK1:
253 reg = MAX8998_REG_BUCK1_DVSARM1;
254 break;
255 case MAX8998_BUCK2:
256 reg = MAX8998_REG_BUCK2_DVSINT1;
257 break;
258 case MAX8998_BUCK3:
259 reg = MAX8998_REG_BUCK3;
260 break;
261 case MAX8998_BUCK4:
262 reg = MAX8998_REG_BUCK4;
263 break;
264 default:
265 return -EINVAL;
266 }
267
268 *_reg = reg;
269 *_shift = shift;
270 *_mask = mask;
271
272 return 0;
273}
274
275static int max8998_get_voltage(struct regulator_dev *rdev)
276{
277 struct max8998_data *max8998 = rdev_get_drvdata(rdev);
278 int reg, shift = 0, mask, ret;
279 u8 val;
280
281 ret = max8998_get_voltage_register(rdev, &reg, &shift, &mask);
282 if (ret)
283 return ret;
284
285 ret = max8998_read_reg(max8998->iodev, reg, &val);
286 if (ret)
287 return ret;
288
289 val >>= shift;
290 val &= mask;
291
292 return max8998_list_voltage(rdev, val);
293}
294
295static int max8998_set_voltage(struct regulator_dev *rdev,
296 int min_uV, int max_uV)
297{
298 struct max8998_data *max8998 = rdev_get_drvdata(rdev);
299 int min_vol = min_uV / 1000, max_vol = max_uV / 1000;
300 const struct voltage_map_desc *desc;
301 int ldo = max8998_get_ldo(rdev);
302 int reg, shift = 0, mask, ret;
303 int i = 0;
304
305 if (ldo > ARRAY_SIZE(ldo_voltage_map))
306 return -EINVAL;
307
308 desc = ldo_voltage_map[ldo];
309 if (desc == NULL)
310 return -EINVAL;
311
312 if (max_vol < desc->min || min_vol > desc->max)
313 return -EINVAL;
314
315 while (desc->min + desc->step*i < max_vol &&
316 desc->min + desc->step*i < desc->max)
317 i++;
318
319 ret = max8998_get_voltage_register(rdev, &reg, &shift, &mask);
320 if (ret)
321 return ret;
322
323 return max8998_update_reg(max8998->iodev, reg, i<<shift, mask<<shift);
324}
325
326static struct regulator_ops max8998_ldo_ops = {
327 .list_voltage = max8998_list_voltage,
328 .is_enabled = max8998_ldo_is_enabled,
329 .enable = max8998_ldo_enable,
330 .disable = max8998_ldo_disable,
331 .get_voltage = max8998_get_voltage,
332 .set_voltage = max8998_set_voltage,
333 .set_suspend_enable = max8998_ldo_enable,
334 .set_suspend_disable = max8998_ldo_disable,
335};
336
337static struct regulator_ops max8998_buck_ops = {
338 .list_voltage = max8998_list_voltage,
339 .is_enabled = max8998_ldo_is_enabled,
340 .enable = max8998_ldo_enable,
341 .disable = max8998_ldo_disable,
342 .get_voltage = max8998_get_voltage,
343 .set_voltage = max8998_set_voltage,
344 .set_suspend_enable = max8998_ldo_enable,
345 .set_suspend_disable = max8998_ldo_disable,
346};
347
348static struct regulator_ops max8998_others_ops = {
349 .is_enabled = max8998_ldo_is_enabled,
350 .enable = max8998_ldo_enable,
351 .disable = max8998_ldo_disable,
352 .set_suspend_enable = max8998_ldo_enable,
353 .set_suspend_disable = max8998_ldo_disable,
354};
355
356static struct regulator_desc regulators[] = {
357 {
358 .name = "LDO2",
359 .id = MAX8998_LDO2,
360 .ops = &max8998_ldo_ops,
361 .type = REGULATOR_VOLTAGE,
362 .owner = THIS_MODULE,
363 }, {
364 .name = "LDO3",
365 .id = MAX8998_LDO3,
366 .ops = &max8998_ldo_ops,
367 .type = REGULATOR_VOLTAGE,
368 .owner = THIS_MODULE,
369 }, {
370 .name = "LDO4",
371 .id = MAX8998_LDO4,
372 .ops = &max8998_ldo_ops,
373 .type = REGULATOR_VOLTAGE,
374 .owner = THIS_MODULE,
375 }, {
376 .name = "LDO5",
377 .id = MAX8998_LDO5,
378 .ops = &max8998_ldo_ops,
379 .type = REGULATOR_VOLTAGE,
380 .owner = THIS_MODULE,
381 }, {
382 .name = "LDO6",
383 .id = MAX8998_LDO6,
384 .ops = &max8998_ldo_ops,
385 .type = REGULATOR_VOLTAGE,
386 .owner = THIS_MODULE,
387 }, {
388 .name = "LDO7",
389 .id = MAX8998_LDO7,
390 .ops = &max8998_ldo_ops,
391 .type = REGULATOR_VOLTAGE,
392 .owner = THIS_MODULE,
393 }, {
394 .name = "LDO8",
395 .id = MAX8998_LDO8,
396 .ops = &max8998_ldo_ops,
397 .type = REGULATOR_VOLTAGE,
398 .owner = THIS_MODULE,
399 }, {
400 .name = "LDO9",
401 .id = MAX8998_LDO9,
402 .ops = &max8998_ldo_ops,
403 .type = REGULATOR_VOLTAGE,
404 .owner = THIS_MODULE,
405 }, {
406 .name = "LDO10",
407 .id = MAX8998_LDO10,
408 .ops = &max8998_ldo_ops,
409 .type = REGULATOR_VOLTAGE,
410 .owner = THIS_MODULE,
411 }, {
412 .name = "LDO11",
413 .id = MAX8998_LDO11,
414 .ops = &max8998_ldo_ops,
415 .type = REGULATOR_VOLTAGE,
416 .owner = THIS_MODULE,
417 }, {
418 .name = "LDO12",
419 .id = MAX8998_LDO12,
420 .ops = &max8998_ldo_ops,
421 .type = REGULATOR_VOLTAGE,
422 .owner = THIS_MODULE,
423 }, {
424 .name = "LDO13",
425 .id = MAX8998_LDO13,
426 .ops = &max8998_ldo_ops,
427 .type = REGULATOR_VOLTAGE,
428 .owner = THIS_MODULE,
429 }, {
430 .name = "LDO14",
431 .id = MAX8998_LDO14,
432 .ops = &max8998_ldo_ops,
433 .type = REGULATOR_VOLTAGE,
434 .owner = THIS_MODULE,
435 }, {
436 .name = "LDO15",
437 .id = MAX8998_LDO15,
438 .ops = &max8998_ldo_ops,
439 .type = REGULATOR_VOLTAGE,
440 .owner = THIS_MODULE,
441 }, {
442 .name = "LDO16",
443 .id = MAX8998_LDO16,
444 .ops = &max8998_ldo_ops,
445 .type = REGULATOR_VOLTAGE,
446 .owner = THIS_MODULE,
447 }, {
448 .name = "LDO17",
449 .id = MAX8998_LDO17,
450 .ops = &max8998_ldo_ops,
451 .type = REGULATOR_VOLTAGE,
452 .owner = THIS_MODULE,
453 }, {
454 .name = "BUCK1",
455 .id = MAX8998_BUCK1,
456 .ops = &max8998_buck_ops,
457 .type = REGULATOR_VOLTAGE,
458 .owner = THIS_MODULE,
459 }, {
460 .name = "BUCK2",
461 .id = MAX8998_BUCK2,
462 .ops = &max8998_buck_ops,
463 .type = REGULATOR_VOLTAGE,
464 .owner = THIS_MODULE,
465 }, {
466 .name = "BUCK3",
467 .id = MAX8998_BUCK3,
468 .ops = &max8998_buck_ops,
469 .type = REGULATOR_VOLTAGE,
470 .owner = THIS_MODULE,
471 }, {
472 .name = "BUCK4",
473 .id = MAX8998_BUCK4,
474 .ops = &max8998_buck_ops,
475 .type = REGULATOR_VOLTAGE,
476 .owner = THIS_MODULE,
477 }, {
478 .name = "EN32KHz AP",
479 .id = MAX8998_EN32KHZ_AP,
480 .ops = &max8998_others_ops,
481 .type = REGULATOR_VOLTAGE,
482 .owner = THIS_MODULE,
483 }, {
484 .name = "EN32KHz CP",
485 .id = MAX8998_EN32KHZ_CP,
486 .ops = &max8998_others_ops,
487 .type = REGULATOR_VOLTAGE,
488 .owner = THIS_MODULE,
489 }, {
490 .name = "ENVICHG",
491 .id = MAX8998_ENVICHG,
492 .ops = &max8998_others_ops,
493 .type = REGULATOR_VOLTAGE,
494 .owner = THIS_MODULE,
495 }, {
496 .name = "ESAFEOUT1",
497 .id = MAX8998_ESAFEOUT1,
498 .ops = &max8998_others_ops,
499 .type = REGULATOR_VOLTAGE,
500 .owner = THIS_MODULE,
501 }, {
502 .name = "ESAFEOUT2",
503 .id = MAX8998_ESAFEOUT2,
504 .ops = &max8998_others_ops,
505 .type = REGULATOR_VOLTAGE,
506 .owner = THIS_MODULE,
507 }
508};
509
510static __devinit int max8998_pmic_probe(struct platform_device *pdev)
511{
512 struct max8998_dev *iodev = dev_get_drvdata(pdev->dev.parent);
513 struct max8998_platform_data *pdata = dev_get_platdata(iodev->dev);
514 struct regulator_dev **rdev;
515 struct max8998_data *max8998;
516 int i, ret, size;
517
518 if (!pdata) {
519 dev_err(pdev->dev.parent, "No platform init data supplied\n");
520 return -ENODEV;
521 }
522
523 max8998 = kzalloc(sizeof(struct max8998_data), GFP_KERNEL);
524 if (!max8998)
525 return -ENOMEM;
526
527 size = sizeof(struct regulator_dev *) * (pdata->num_regulators + 1);
528 max8998->rdev = kzalloc(size, GFP_KERNEL);
529 if (!max8998->rdev) {
530 kfree(max8998);
531 return -ENOMEM;
532 }
533
534 rdev = max8998->rdev;
535 max8998->iodev = iodev;
536 platform_set_drvdata(pdev, max8998);
537
538 for (i = 0; i < pdata->num_regulators; i++) {
539 const struct voltage_map_desc *desc;
540 int id = pdata->regulators[i].id;
541 int index = id - MAX8998_LDO2;
542
543 desc = ldo_voltage_map[id];
544 if (desc && regulators[index].ops != &max8998_others_ops) {
545 int count = (desc->max - desc->min) / desc->step + 1;
546 regulators[index].n_voltages = count;
547 }
548 rdev[i] = regulator_register(&regulators[index], max8998->dev,
549 pdata->regulators[i].initdata, max8998);
550 if (IS_ERR(rdev[i])) {
551 ret = PTR_ERR(rdev[i]);
552 dev_err(max8998->dev, "regulator init failed\n");
553 rdev[i] = NULL;
554 goto err;
555 }
556 }
557
558
559 return 0;
560err:
561 for (i = 0; i <= max8998->num_regulators; i++)
562 if (rdev[i])
563 regulator_unregister(rdev[i]);
564
565 kfree(max8998->rdev);
566 kfree(max8998);
567
568 return ret;
569}
570
571static int __devexit max8998_pmic_remove(struct platform_device *pdev)
572{
573 struct max8998_data *max8998 = platform_get_drvdata(pdev);
574 struct regulator_dev **rdev = max8998->rdev;
575 int i;
576
577 for (i = 0; i <= max8998->num_regulators; i++)
578 if (rdev[i])
579 regulator_unregister(rdev[i]);
580
581 kfree(max8998->rdev);
582 kfree(max8998);
583
584 return 0;
585}
586
587static struct platform_driver max8998_pmic_driver = {
588 .driver = {
589 .name = "max8998-pmic",
590 .owner = THIS_MODULE,
591 },
592 .probe = max8998_pmic_probe,
593 .remove = __devexit_p(max8998_pmic_remove),
594};
595
596static int __init max8998_pmic_init(void)
597{
598 return platform_driver_register(&max8998_pmic_driver);
599}
600subsys_initcall(max8998_pmic_init);
601
602static void __exit max8998_pmic_cleanup(void)
603{
604 platform_driver_unregister(&max8998_pmic_driver);
605}
606module_exit(max8998_pmic_cleanup);
607
608MODULE_DESCRIPTION("MAXIM 8998 voltage regulator driver");
609MODULE_AUTHOR("Kyungmin Park <kyungmin.park@samsung.com>");
610MODULE_LICENSE("GPL");
diff --git a/include/linux/mfd/max8998-private.h b/include/linux/mfd/max8998-private.h
new file mode 100644
index 000000000000..6dc75b3e2d33
--- /dev/null
+++ b/include/linux/mfd/max8998-private.h
@@ -0,0 +1,112 @@
1/*
2 * max8698.h - Voltage regulator driver for the Maxim 8998
3 *
4 * Copyright (C) 2009-2010 Samsung Electrnoics
5 * Kyungmin Park <kyungmin.park@samsung.com>
6 * Marek Szyprowski <m.szyprowski@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#ifndef __LINUX_MFD_MAX8998_PRIV_H
24#define __LINUX_MFD_MAX8998_PRIV_H
25
26/* MAX 8998 registers */
27enum {
28 MAX8998_REG_IRQ1,
29 MAX8998_REG_IRQ2,
30 MAX8998_REG_IRQ3,
31 MAX8998_REG_IRQ4,
32 MAX8998_REG_IRQM1,
33 MAX8998_REG_IRQM2,
34 MAX8998_REG_IRQM3,
35 MAX8998_REG_IRQM4,
36 MAX8998_REG_STATUS1,
37 MAX8998_REG_STATUS2,
38 MAX8998_REG_STATUSM1,
39 MAX8998_REG_STATUSM2,
40 MAX8998_REG_CHGR1,
41 MAX8998_REG_CHGR2,
42 MAX8998_REG_LDO_ACTIVE_DISCHARGE1,
43 MAX8998_REG_LDO_ACTIVE_DISCHARGE2,
44 MAX8998_REG_BUCK_ACTIVE_DISCHARGE3,
45 MAX8998_REG_ONOFF1,
46 MAX8998_REG_ONOFF2,
47 MAX8998_REG_ONOFF3,
48 MAX8998_REG_ONOFF4,
49 MAX8998_REG_BUCK1_DVSARM1,
50 MAX8998_REG_BUCK1_DVSARM2,
51 MAX8998_REG_BUCK1_DVSARM3,
52 MAX8998_REG_BUCK1_DVSARM4,
53 MAX8998_REG_BUCK2_DVSINT1,
54 MAX8998_REG_BUCK2_DVSINT2,
55 MAX8998_REG_BUCK3,
56 MAX8998_REG_BUCK4,
57 MAX8998_REG_LDO2_LDO3,
58 MAX8998_REG_LDO4,
59 MAX8998_REG_LDO5,
60 MAX8998_REG_LDO6,
61 MAX8998_REG_LDO7,
62 MAX8998_REG_LDO8_LDO9,
63 MAX8998_REG_LDO10_LDO11,
64 MAX8998_REG_LDO12,
65 MAX8998_REG_LDO13,
66 MAX8998_REG_LDO14,
67 MAX8998_REG_LDO15,
68 MAX8998_REG_LDO16,
69 MAX8998_REG_LDO17,
70 MAX8998_REG_BKCHR,
71 MAX8998_REG_LBCNFG1,
72 MAX8998_REG_LBCNFG2,
73};
74
75/**
76 * struct max8998_dev - max8998 master device for sub-drivers
77 * @dev: master device of the chip (can be used to access platform data)
78 * @i2c_client: i2c client private data
79 * @dev_read(): chip register read function
80 * @dev_write(): chip register write function
81 * @dev_update(): chip register update function
82 * @iolock: mutex for serializing io access
83 */
84
85struct max8998_dev {
86 struct device *dev;
87 struct i2c_client *i2c_client;
88 int (*dev_read)(struct max8998_dev *max8998, u8 reg, u8 *dest);
89 int (*dev_write)(struct max8998_dev *max8998, u8 reg, u8 val);
90 int (*dev_update)(struct max8998_dev *max8998, u8 reg, u8 val, u8 mask);
91 struct mutex iolock;
92};
93
94static inline int max8998_read_reg(struct max8998_dev *max8998, u8 reg,
95 u8 *value)
96{
97 return max8998->dev_read(max8998, reg, value);
98}
99
100static inline int max8998_write_reg(struct max8998_dev *max8998, u8 reg,
101 u8 value)
102{
103 return max8998->dev_write(max8998, reg, value);
104}
105
106static inline int max8998_update_reg(struct max8998_dev *max8998, u8 reg,
107 u8 value, u8 mask)
108{
109 return max8998->dev_update(max8998, reg, value, mask);
110}
111
112#endif /* __LINUX_MFD_MAX8998_PRIV_H */
diff --git a/include/linux/mfd/max8998.h b/include/linux/mfd/max8998.h
new file mode 100644
index 000000000000..1d3601a2d853
--- /dev/null
+++ b/include/linux/mfd/max8998.h
@@ -0,0 +1,78 @@
1/*
2 * max8698.h - Voltage regulator driver for the Maxim 8998
3 *
4 * Copyright (C) 2009-2010 Samsung Electrnoics
5 * Kyungmin Park <kyungmin.park@samsung.com>
6 * Marek Szyprowski <m.szyprowski@samsung.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 */
22
23#ifndef __LINUX_MFD_MAX8998_H
24#define __LINUX_MFD_MAX8998_H
25
26#include <linux/regulator/machine.h>
27
28/* MAX 8998 regulator ids */
29enum {
30 MAX8998_LDO2 = 2,
31 MAX8998_LDO3,
32 MAX8998_LDO4,
33 MAX8998_LDO5,
34 MAX8998_LDO6,
35 MAX8998_LDO7,
36 MAX8998_LDO8,
37 MAX8998_LDO9,
38 MAX8998_LDO10,
39 MAX8998_LDO11,
40 MAX8998_LDO12,
41 MAX8998_LDO13,
42 MAX8998_LDO14,
43 MAX8998_LDO15,
44 MAX8998_LDO16,
45 MAX8998_LDO17,
46 MAX8998_BUCK1,
47 MAX8998_BUCK2,
48 MAX8998_BUCK3,
49 MAX8998_BUCK4,
50 MAX8998_EN32KHZ_AP,
51 MAX8998_EN32KHZ_CP,
52 MAX8998_ENVICHG,
53 MAX8998_ESAFEOUT1,
54 MAX8998_ESAFEOUT2,
55};
56
57/**
58 * max8998_regulator_data - regulator data
59 * @id: regulator id
60 * @initdata: regulator init data (contraints, supplies, ...)
61 */
62struct max8998_regulator_data {
63 int id;
64 struct regulator_init_data *initdata;
65};
66
67/**
68 * struct max8998_board - packages regulator init data
69 * @num_regulators: number of regultors used
70 * @regulators: array of defined regulators
71 */
72
73struct max8998_platform_data {
74 int num_regulators;
75 struct max8998_regulator_data *regulators;
76};
77
78#endif /* __LINUX_MFD_MAX8998_H */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-16 10:15:31 -0500