diff options
author | James Ban <James.Ban.opensource@diasemi.com> | 2015-11-18 19:59:15 -0500 |
---|---|---|
committer | Mark Brown <broonie@kernel.org> | 2015-11-20 13:06:15 -0500 |
commit | f307a7e9b7af401d459d26f98497c9cec766a41f (patch) | |
tree | bd3551cb12f2840f74ae4cde5bd99a4b1debe1d4 | |
parent | 8005c49d9aea74d382f474ce11afbbc7d7130bec (diff) |
regulator: pv88060: new regulator driver
This is the driver for the Powerventure PV88060 BUCKs and LDOs regulator.
It communicates via an I2C bus to the device.
Signed-off-by: James Ban <James.Ban.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
-rw-r--r-- | Documentation/devicetree/bindings/regulator/pv88060.txt | 124 | ||||
-rw-r--r-- | drivers/regulator/Kconfig | 8 | ||||
-rw-r--r-- | drivers/regulator/Makefile | 1 | ||||
-rw-r--r-- | drivers/regulator/pv88060-regulator.c | 437 | ||||
-rw-r--r-- | drivers/regulator/pv88060-regulator.h | 69 |
5 files changed, 639 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/pv88060.txt b/Documentation/devicetree/bindings/regulator/pv88060.txt new file mode 100644 index 000000000000..10a6dadc008e --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/pv88060.txt | |||
@@ -0,0 +1,124 @@ | |||
1 | * Powerventure Semiconductor PV88060 Voltage Regulator | ||
2 | |||
3 | Required properties: | ||
4 | - compatible: "pvs,pv88060". | ||
5 | - reg: I2C slave address, usually 0x49. | ||
6 | - interrupts: the interrupt outputs of the controller | ||
7 | - regulators: A node that houses a sub-node for each regulator within the | ||
8 | device. Each sub-node is identified using the node's name, with valid | ||
9 | values listed below. The content of each sub-node is defined by the | ||
10 | standard binding for regulators; see regulator.txt. | ||
11 | BUCK1, LDO1, LDO2, LDO3, LDO4, LDO5, LDO6, LDO7, SW1, SW2, SW3, SW4, | ||
12 | SW5, and SW6. | ||
13 | |||
14 | Optional properties: | ||
15 | - Any optional property defined in regulator.txt | ||
16 | |||
17 | Example | ||
18 | |||
19 | pmic: pv88060@49 { | ||
20 | compatible = "pvs,pv88060"; | ||
21 | reg = <0x49>; | ||
22 | interrupt-parent = <&gpio>; | ||
23 | interrupts = <24 24>; | ||
24 | |||
25 | regulators { | ||
26 | BUCK1 { | ||
27 | regulator-name = "buck1"; | ||
28 | regulator-min-microvolt = <2800000>; | ||
29 | regulator-max-microvolt = <4387500>; | ||
30 | regulator-min-microamp = <1496000>; | ||
31 | regulator-max-microamp = <4189000>; | ||
32 | regulator-boot-on; | ||
33 | }; | ||
34 | |||
35 | LDO1 { | ||
36 | regulator-name = "ldo1"; | ||
37 | regulator-min-microvolt = <1200000>; | ||
38 | regulator-max-microvolt = <3350000>; | ||
39 | regulator-boot-on; | ||
40 | }; | ||
41 | |||
42 | LDO2 { | ||
43 | regulator-name = "ldo2"; | ||
44 | regulator-min-microvolt = <1200000>; | ||
45 | regulator-max-microvolt = <3350000>; | ||
46 | regulator-boot-on; | ||
47 | }; | ||
48 | |||
49 | LDO3 { | ||
50 | regulator-name = "ldo3"; | ||
51 | regulator-min-microvolt = <1200000>; | ||
52 | regulator-max-microvolt = <3350000>; | ||
53 | regulator-boot-on; | ||
54 | }; | ||
55 | |||
56 | LDO4 { | ||
57 | regulator-name = "ldo4"; | ||
58 | regulator-min-microvolt = <1200000>; | ||
59 | regulator-max-microvolt = <3350000>; | ||
60 | regulator-boot-on; | ||
61 | }; | ||
62 | |||
63 | LDO5 { | ||
64 | regulator-name = "ldo5"; | ||
65 | regulator-min-microvolt = <1200000>; | ||
66 | regulator-max-microvolt = <3350000>; | ||
67 | regulator-boot-on; | ||
68 | }; | ||
69 | |||
70 | LDO6 { | ||
71 | regulator-name = "ldo6"; | ||
72 | regulator-min-microvolt = <1200000>; | ||
73 | regulator-max-microvolt = <3350000>; | ||
74 | regulator-boot-on; | ||
75 | }; | ||
76 | |||
77 | LDO7 { | ||
78 | regulator-name = "ldo7"; | ||
79 | regulator-min-microvolt = <1200000>; | ||
80 | regulator-max-microvolt = <3350000>; | ||
81 | regulator-boot-on; | ||
82 | }; | ||
83 | |||
84 | SW1 { | ||
85 | regulator-name = "sw1"; | ||
86 | regulator-min-microvolt = <5000000>; | ||
87 | regulator-max-microvolt = <5000000>; | ||
88 | }; | ||
89 | |||
90 | SW2 { | ||
91 | regulator-name = "sw2"; | ||
92 | regulator-min-microvolt = <5000000>; | ||
93 | regulator-max-microvolt = <5000000>; | ||
94 | regulator-boot-on; | ||
95 | }; | ||
96 | |||
97 | SW3 { | ||
98 | regulator-name = "sw3"; | ||
99 | regulator-min-microvolt = <5000000>; | ||
100 | regulator-max-microvolt = <5000000>; | ||
101 | regulator-boot-on; | ||
102 | }; | ||
103 | |||
104 | SW4 { | ||
105 | regulator-name = "sw4"; | ||
106 | regulator-min-microvolt = <5000000>; | ||
107 | regulator-max-microvolt = <5000000>; | ||
108 | regulator-boot-on; | ||
109 | }; | ||
110 | |||
111 | SW5 { | ||
112 | regulator-name = "sw5"; | ||
113 | regulator-min-microvolt = <5000000>; | ||
114 | regulator-max-microvolt = <5000000>; | ||
115 | regulator-boot-on; | ||
116 | }; | ||
117 | |||
118 | SW6 { | ||
119 | regulator-name = "sw6"; | ||
120 | regulator-min-microvolt = <5000000>; | ||
121 | regulator-max-microvolt = <5000000>; | ||
122 | }; | ||
123 | }; | ||
124 | }; \ No newline at end of file | ||
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig index 8df0b0e62976..c61f72ff1dfd 100644 --- a/drivers/regulator/Kconfig +++ b/drivers/regulator/Kconfig | |||
@@ -504,6 +504,14 @@ config REGULATOR_PFUZE100 | |||
504 | Say y here to support the regulators found on the Freescale | 504 | Say y here to support the regulators found on the Freescale |
505 | PFUZE100/PFUZE200 PMIC. | 505 | PFUZE100/PFUZE200 PMIC. |
506 | 506 | ||
507 | config REGULATOR_PV88060 | ||
508 | tristate "Powerventure Semiconductor PV88060 regulator" | ||
509 | depends on I2C | ||
510 | select REGMAP_I2C | ||
511 | help | ||
512 | Say y here to support the voltage regulators and convertors | ||
513 | PV88060 | ||
514 | |||
507 | config REGULATOR_PWM | 515 | config REGULATOR_PWM |
508 | tristate "PWM voltage regulator" | 516 | tristate "PWM voltage regulator" |
509 | depends on PWM | 517 | depends on PWM |
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile index 0f8174913c17..b11c8a4f873a 100644 --- a/drivers/regulator/Makefile +++ b/drivers/regulator/Makefile | |||
@@ -66,6 +66,7 @@ obj-$(CONFIG_REGULATOR_QCOM_SMD_RPM) += qcom_smd-regulator.o | |||
66 | obj-$(CONFIG_REGULATOR_QCOM_SPMI) += qcom_spmi-regulator.o | 66 | obj-$(CONFIG_REGULATOR_QCOM_SPMI) += qcom_spmi-regulator.o |
67 | obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o | 67 | obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o |
68 | obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o | 68 | obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o |
69 | obj-$(CONFIG_REGULATOR_PV88060) += pv88060-regulator.o | ||
69 | obj-$(CONFIG_REGULATOR_PWM) += pwm-regulator.o | 70 | obj-$(CONFIG_REGULATOR_PWM) += pwm-regulator.o |
70 | obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o | 71 | obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o |
71 | obj-$(CONFIG_REGULATOR_PBIAS) += pbias-regulator.o | 72 | obj-$(CONFIG_REGULATOR_PBIAS) += pbias-regulator.o |
diff --git a/drivers/regulator/pv88060-regulator.c b/drivers/regulator/pv88060-regulator.c new file mode 100644 index 000000000000..60b16d835df7 --- /dev/null +++ b/drivers/regulator/pv88060-regulator.c | |||
@@ -0,0 +1,437 @@ | |||
1 | /* | ||
2 | * pv88060-regulator.c - Regulator device driver for PV88060 | ||
3 | * Copyright (C) 2015 Powerventure Semiconductor Ltd. | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or | ||
6 | * modify it under the terms of the GNU General Public License | ||
7 | * as published by the Free Software Foundation; either version 2 | ||
8 | * of the License, or (at your option) any later version. | ||
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/gpio.h> | ||
18 | #include <linux/i2c.h> | ||
19 | #include <linux/module.h> | ||
20 | #include <linux/init.h> | ||
21 | #include <linux/slab.h> | ||
22 | #include <linux/regulator/driver.h> | ||
23 | #include <linux/regulator/machine.h> | ||
24 | #include <linux/regmap.h> | ||
25 | #include <linux/irq.h> | ||
26 | #include <linux/interrupt.h> | ||
27 | #include <linux/regulator/of_regulator.h> | ||
28 | #include <linux/proc_fs.h> | ||
29 | #include <linux/uaccess.h> | ||
30 | #include "pv88060-regulator.h" | ||
31 | |||
32 | #define PV88060_MAX_REGULATORS 14 | ||
33 | |||
34 | /* PV88060 REGULATOR IDs */ | ||
35 | enum { | ||
36 | /* BUCKs */ | ||
37 | PV88060_ID_BUCK1, | ||
38 | |||
39 | /* LDOs */ | ||
40 | PV88060_ID_LDO1, | ||
41 | PV88060_ID_LDO2, | ||
42 | PV88060_ID_LDO3, | ||
43 | PV88060_ID_LDO4, | ||
44 | PV88060_ID_LDO5, | ||
45 | PV88060_ID_LDO6, | ||
46 | PV88060_ID_LDO7, | ||
47 | |||
48 | /* SWTs */ | ||
49 | PV88060_ID_SW1, | ||
50 | PV88060_ID_SW2, | ||
51 | PV88060_ID_SW3, | ||
52 | PV88060_ID_SW4, | ||
53 | PV88060_ID_SW5, | ||
54 | PV88060_ID_SW6, | ||
55 | }; | ||
56 | |||
57 | struct pv88060_regulator { | ||
58 | struct regulator_desc desc; | ||
59 | /* Current limiting */ | ||
60 | unsigned n_current_limits; | ||
61 | const int *current_limits; | ||
62 | unsigned int limit_mask; | ||
63 | unsigned int conf; /* buck configuration register */ | ||
64 | }; | ||
65 | |||
66 | struct pv88060 { | ||
67 | struct device *dev; | ||
68 | struct regmap *regmap; | ||
69 | struct regulator_dev *rdev[PV88060_MAX_REGULATORS]; | ||
70 | }; | ||
71 | |||
72 | static const struct regmap_config pv88060_regmap_config = { | ||
73 | .reg_bits = 8, | ||
74 | .val_bits = 8, | ||
75 | }; | ||
76 | |||
77 | /* Current limits array (in uA) for BUCK1 | ||
78 | * Entry indexes corresponds to register values. | ||
79 | */ | ||
80 | |||
81 | static const int pv88060_buck1_limits[] = { | ||
82 | 1496000, 2393000, 3291000, 4189000 | ||
83 | }; | ||
84 | |||
85 | static unsigned int pv88060_buck_get_mode(struct regulator_dev *rdev) | ||
86 | { | ||
87 | struct pv88060_regulator *info = rdev_get_drvdata(rdev); | ||
88 | unsigned int data; | ||
89 | int ret, mode = 0; | ||
90 | |||
91 | ret = regmap_read(rdev->regmap, info->conf, &data); | ||
92 | if (ret < 0) | ||
93 | return ret; | ||
94 | |||
95 | switch (data & PV88060_BUCK_MODE_MASK) { | ||
96 | case PV88060_BUCK_MODE_SYNC: | ||
97 | mode = REGULATOR_MODE_FAST; | ||
98 | break; | ||
99 | case PV88060_BUCK_MODE_AUTO: | ||
100 | mode = REGULATOR_MODE_NORMAL; | ||
101 | break; | ||
102 | case PV88060_BUCK_MODE_SLEEP: | ||
103 | mode = REGULATOR_MODE_STANDBY; | ||
104 | break; | ||
105 | } | ||
106 | |||
107 | return mode; | ||
108 | } | ||
109 | |||
110 | static int pv88060_buck_set_mode(struct regulator_dev *rdev, | ||
111 | unsigned int mode) | ||
112 | { | ||
113 | struct pv88060_regulator *info = rdev_get_drvdata(rdev); | ||
114 | int val = 0; | ||
115 | |||
116 | switch (mode) { | ||
117 | case REGULATOR_MODE_FAST: | ||
118 | val = PV88060_BUCK_MODE_SYNC; | ||
119 | break; | ||
120 | case REGULATOR_MODE_NORMAL: | ||
121 | val = PV88060_BUCK_MODE_AUTO; | ||
122 | break; | ||
123 | case REGULATOR_MODE_STANDBY: | ||
124 | val = PV88060_BUCK_MODE_SLEEP; | ||
125 | break; | ||
126 | default: | ||
127 | return -EINVAL; | ||
128 | } | ||
129 | |||
130 | return regmap_update_bits(rdev->regmap, info->conf, | ||
131 | PV88060_BUCK_MODE_MASK, val); | ||
132 | } | ||
133 | |||
134 | static int pv88060_set_current_limit(struct regulator_dev *rdev, int min, | ||
135 | int max) | ||
136 | { | ||
137 | struct pv88060_regulator *info = rdev_get_drvdata(rdev); | ||
138 | int i; | ||
139 | |||
140 | /* search for closest to maximum */ | ||
141 | for (i = info->n_current_limits; i >= 0; i--) { | ||
142 | if (min <= info->current_limits[i] | ||
143 | && max >= info->current_limits[i]) { | ||
144 | return regmap_update_bits(rdev->regmap, | ||
145 | info->conf, | ||
146 | info->limit_mask, | ||
147 | i << PV88060_BUCK_ILIM_SHIFT); | ||
148 | } | ||
149 | } | ||
150 | |||
151 | return -EINVAL; | ||
152 | } | ||
153 | |||
154 | static int pv88060_get_current_limit(struct regulator_dev *rdev) | ||
155 | { | ||
156 | struct pv88060_regulator *info = rdev_get_drvdata(rdev); | ||
157 | unsigned int data; | ||
158 | int ret; | ||
159 | |||
160 | ret = regmap_read(rdev->regmap, info->conf, &data); | ||
161 | if (ret < 0) | ||
162 | return ret; | ||
163 | |||
164 | data = (data & info->limit_mask) >> PV88060_BUCK_ILIM_SHIFT; | ||
165 | return info->current_limits[data]; | ||
166 | } | ||
167 | |||
168 | static struct regulator_ops pv88060_buck_ops = { | ||
169 | .get_mode = pv88060_buck_get_mode, | ||
170 | .set_mode = pv88060_buck_set_mode, | ||
171 | .enable = regulator_enable_regmap, | ||
172 | .disable = regulator_disable_regmap, | ||
173 | .is_enabled = regulator_is_enabled_regmap, | ||
174 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | ||
175 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | ||
176 | .list_voltage = regulator_list_voltage_linear, | ||
177 | .set_current_limit = pv88060_set_current_limit, | ||
178 | .get_current_limit = pv88060_get_current_limit, | ||
179 | }; | ||
180 | |||
181 | static struct regulator_ops pv88060_ldo_ops = { | ||
182 | .enable = regulator_enable_regmap, | ||
183 | .disable = regulator_disable_regmap, | ||
184 | .is_enabled = regulator_is_enabled_regmap, | ||
185 | .set_voltage_sel = regulator_set_voltage_sel_regmap, | ||
186 | .get_voltage_sel = regulator_get_voltage_sel_regmap, | ||
187 | .list_voltage = regulator_list_voltage_linear, | ||
188 | }; | ||
189 | |||
190 | #define PV88060_BUCK(chip, regl_name, min, step, max, limits_array) \ | ||
191 | {\ | ||
192 | .desc = {\ | ||
193 | .id = chip##_ID_##regl_name,\ | ||
194 | .name = __stringify(chip##_##regl_name),\ | ||
195 | .of_match = of_match_ptr(#regl_name),\ | ||
196 | .regulators_node = of_match_ptr("regulators"),\ | ||
197 | .type = REGULATOR_VOLTAGE,\ | ||
198 | .owner = THIS_MODULE,\ | ||
199 | .ops = &pv88060_buck_ops,\ | ||
200 | .min_uV = min,\ | ||
201 | .uV_step = step,\ | ||
202 | .n_voltages = ((max) - (min))/(step) + 1,\ | ||
203 | .enable_reg = PV88060_REG_##regl_name##_CONF0,\ | ||
204 | .enable_mask = PV88060_BUCK_EN, \ | ||
205 | .vsel_reg = PV88060_REG_##regl_name##_CONF0,\ | ||
206 | .vsel_mask = PV88060_VBUCK_MASK,\ | ||
207 | },\ | ||
208 | .current_limits = limits_array,\ | ||
209 | .n_current_limits = ARRAY_SIZE(limits_array),\ | ||
210 | .limit_mask = PV88060_BUCK_ILIM_MASK, \ | ||
211 | .conf = PV88060_REG_##regl_name##_CONF1,\ | ||
212 | } | ||
213 | |||
214 | #define PV88060_LDO(chip, regl_name, min, step, max) \ | ||
215 | {\ | ||
216 | .desc = {\ | ||
217 | .id = chip##_ID_##regl_name,\ | ||
218 | .name = __stringify(chip##_##regl_name),\ | ||
219 | .of_match = of_match_ptr(#regl_name),\ | ||
220 | .regulators_node = of_match_ptr("regulators"),\ | ||
221 | .type = REGULATOR_VOLTAGE,\ | ||
222 | .owner = THIS_MODULE,\ | ||
223 | .ops = &pv88060_ldo_ops,\ | ||
224 | .min_uV = min, \ | ||
225 | .uV_step = step, \ | ||
226 | .n_voltages = (step) ? ((max - min) / step + 1) : 1, \ | ||
227 | .enable_reg = PV88060_REG_##regl_name##_CONF, \ | ||
228 | .enable_mask = PV88060_LDO_EN, \ | ||
229 | .vsel_reg = PV88060_REG_##regl_name##_CONF, \ | ||
230 | .vsel_mask = PV88060_VLDO_MASK, \ | ||
231 | },\ | ||
232 | } | ||
233 | |||
234 | #define PV88060_SW(chip, regl_name, max) \ | ||
235 | {\ | ||
236 | .desc = {\ | ||
237 | .id = chip##_ID_##regl_name,\ | ||
238 | .name = __stringify(chip##_##regl_name),\ | ||
239 | .of_match = of_match_ptr(#regl_name),\ | ||
240 | .regulators_node = of_match_ptr("regulators"),\ | ||
241 | .type = REGULATOR_VOLTAGE,\ | ||
242 | .owner = THIS_MODULE,\ | ||
243 | .ops = &pv88060_ldo_ops,\ | ||
244 | .min_uV = max,\ | ||
245 | .uV_step = 0,\ | ||
246 | .n_voltages = 1,\ | ||
247 | .enable_reg = PV88060_REG_##regl_name##_CONF,\ | ||
248 | .enable_mask = PV88060_SW_EN,\ | ||
249 | },\ | ||
250 | } | ||
251 | |||
252 | static const struct pv88060_regulator pv88060_regulator_info[] = { | ||
253 | PV88060_BUCK(PV88060, BUCK1, 2800000, 12500, 4387500, | ||
254 | pv88060_buck1_limits), | ||
255 | PV88060_LDO(PV88060, LDO1, 1200000, 50000, 3350000), | ||
256 | PV88060_LDO(PV88060, LDO2, 1200000, 50000, 3350000), | ||
257 | PV88060_LDO(PV88060, LDO3, 1200000, 50000, 3350000), | ||
258 | PV88060_LDO(PV88060, LDO4, 1200000, 50000, 3350000), | ||
259 | PV88060_LDO(PV88060, LDO5, 1200000, 50000, 3350000), | ||
260 | PV88060_LDO(PV88060, LDO6, 1200000, 50000, 3350000), | ||
261 | PV88060_LDO(PV88060, LDO7, 1200000, 50000, 3350000), | ||
262 | PV88060_SW(PV88060, SW1, 5000000), | ||
263 | PV88060_SW(PV88060, SW2, 5000000), | ||
264 | PV88060_SW(PV88060, SW3, 5000000), | ||
265 | PV88060_SW(PV88060, SW4, 5000000), | ||
266 | PV88060_SW(PV88060, SW5, 5000000), | ||
267 | PV88060_SW(PV88060, SW6, 5000000), | ||
268 | }; | ||
269 | |||
270 | static irqreturn_t pv88060_irq_handler(int irq, void *data) | ||
271 | { | ||
272 | struct pv88060 *chip = data; | ||
273 | int i, reg_val, err, ret = IRQ_NONE; | ||
274 | |||
275 | err = regmap_read(chip->regmap, PV88060_REG_EVENT_A, ®_val); | ||
276 | if (err < 0) | ||
277 | goto error_i2c; | ||
278 | |||
279 | if (reg_val & PV88060_E_VDD_FLT) { | ||
280 | for (i = 0; i < PV88060_MAX_REGULATORS; i++) { | ||
281 | if (chip->rdev[i] != NULL) { | ||
282 | regulator_notifier_call_chain(chip->rdev[i], | ||
283 | REGULATOR_EVENT_UNDER_VOLTAGE, | ||
284 | NULL); | ||
285 | } | ||
286 | } | ||
287 | |||
288 | err = regmap_update_bits(chip->regmap, PV88060_REG_EVENT_A, | ||
289 | PV88060_E_VDD_FLT, PV88060_E_VDD_FLT); | ||
290 | if (err < 0) | ||
291 | goto error_i2c; | ||
292 | |||
293 | ret = IRQ_HANDLED; | ||
294 | } | ||
295 | |||
296 | if (reg_val & PV88060_E_OVER_TEMP) { | ||
297 | for (i = 0; i < PV88060_MAX_REGULATORS; i++) { | ||
298 | if (chip->rdev[i] != NULL) { | ||
299 | regulator_notifier_call_chain(chip->rdev[i], | ||
300 | REGULATOR_EVENT_OVER_TEMP, | ||
301 | NULL); | ||
302 | } | ||
303 | } | ||
304 | |||
305 | err = regmap_update_bits(chip->regmap, PV88060_REG_EVENT_A, | ||
306 | PV88060_E_OVER_TEMP, PV88060_E_OVER_TEMP); | ||
307 | if (err < 0) | ||
308 | goto error_i2c; | ||
309 | |||
310 | ret = IRQ_HANDLED; | ||
311 | } | ||
312 | |||
313 | return ret; | ||
314 | |||
315 | error_i2c: | ||
316 | dev_err(chip->dev, "I2C error : %d\n", err); | ||
317 | return IRQ_NONE; | ||
318 | } | ||
319 | |||
320 | /* | ||
321 | * I2C driver interface functions | ||
322 | */ | ||
323 | static int pv88060_i2c_probe(struct i2c_client *i2c, | ||
324 | const struct i2c_device_id *id) | ||
325 | { | ||
326 | struct regulator_init_data *init_data = dev_get_platdata(&i2c->dev); | ||
327 | struct pv88060 *chip; | ||
328 | struct regulator_config config = { }; | ||
329 | int error, i, ret = 0; | ||
330 | |||
331 | chip = devm_kzalloc(&i2c->dev, sizeof(struct pv88060), GFP_KERNEL); | ||
332 | if (!chip) | ||
333 | return -ENOMEM; | ||
334 | |||
335 | chip->dev = &i2c->dev; | ||
336 | chip->regmap = devm_regmap_init_i2c(i2c, &pv88060_regmap_config); | ||
337 | if (IS_ERR(chip->regmap)) { | ||
338 | error = PTR_ERR(chip->regmap); | ||
339 | dev_err(chip->dev, "Failed to allocate register map: %d\n", | ||
340 | error); | ||
341 | return error; | ||
342 | } | ||
343 | |||
344 | i2c_set_clientdata(i2c, chip); | ||
345 | |||
346 | if (i2c->irq != 0) { | ||
347 | ret = regmap_write(chip->regmap, PV88060_REG_MASK_A, 0xFF); | ||
348 | if (ret < 0) { | ||
349 | dev_err(chip->dev, | ||
350 | "Failed to mask A reg: %d\n", ret); | ||
351 | return ret; | ||
352 | } | ||
353 | |||
354 | regmap_write(chip->regmap, PV88060_REG_MASK_B, 0xFF); | ||
355 | if (ret < 0) { | ||
356 | dev_err(chip->dev, | ||
357 | "Failed to mask B reg: %d\n", ret); | ||
358 | return ret; | ||
359 | } | ||
360 | |||
361 | regmap_write(chip->regmap, PV88060_REG_MASK_C, 0xFF); | ||
362 | if (ret < 0) { | ||
363 | dev_err(chip->dev, | ||
364 | "Failed to mask C reg: %d\n", ret); | ||
365 | return ret; | ||
366 | } | ||
367 | |||
368 | ret = request_threaded_irq(i2c->irq, NULL, | ||
369 | pv88060_irq_handler, | ||
370 | IRQF_TRIGGER_LOW|IRQF_ONESHOT, | ||
371 | "pv88060", chip); | ||
372 | if (ret != 0) { | ||
373 | dev_err(chip->dev, "Failed to request IRQ: %d\n", | ||
374 | i2c->irq); | ||
375 | return ret; | ||
376 | } | ||
377 | |||
378 | ret = regmap_update_bits(chip->regmap, PV88060_REG_MASK_A, | ||
379 | PV88060_M_VDD_FLT | PV88060_M_OVER_TEMP, 0); | ||
380 | if (ret < 0) { | ||
381 | dev_err(chip->dev, | ||
382 | "Failed to update mask reg: %d\n", ret); | ||
383 | return ret; | ||
384 | } | ||
385 | |||
386 | } else { | ||
387 | dev_warn(chip->dev, "No IRQ configured\n"); | ||
388 | } | ||
389 | |||
390 | config.dev = chip->dev; | ||
391 | config.regmap = chip->regmap; | ||
392 | |||
393 | for (i = 0; i < PV88060_MAX_REGULATORS; i++) { | ||
394 | if (init_data) | ||
395 | config.init_data = &init_data[i]; | ||
396 | |||
397 | config.driver_data = (void *)&pv88060_regulator_info[i]; | ||
398 | chip->rdev[i] = devm_regulator_register(chip->dev, | ||
399 | &pv88060_regulator_info[i].desc, &config); | ||
400 | if (IS_ERR(chip->rdev[i])) { | ||
401 | dev_err(chip->dev, | ||
402 | "Failed to register PV88060 regulator\n"); | ||
403 | return PTR_ERR(chip->rdev[i]); | ||
404 | } | ||
405 | } | ||
406 | |||
407 | return 0; | ||
408 | } | ||
409 | |||
410 | static const struct i2c_device_id pv88060_i2c_id[] = { | ||
411 | {"pv88060", 0}, | ||
412 | {}, | ||
413 | }; | ||
414 | MODULE_DEVICE_TABLE(i2c, pv88060_i2c_id); | ||
415 | |||
416 | #ifdef CONFIG_OF | ||
417 | static const struct of_device_id pv88060_dt_ids[] = { | ||
418 | { .compatible = "pvs,pv88060", .data = &pv88060_i2c_id[0] }, | ||
419 | {}, | ||
420 | }; | ||
421 | MODULE_DEVICE_TABLE(of, pv88060_dt_ids); | ||
422 | #endif | ||
423 | |||
424 | static struct i2c_driver pv88060_regulator_driver = { | ||
425 | .driver = { | ||
426 | .name = "pv88060", | ||
427 | .of_match_table = of_match_ptr(pv88060_dt_ids), | ||
428 | }, | ||
429 | .probe = pv88060_i2c_probe, | ||
430 | .id_table = pv88060_i2c_id, | ||
431 | }; | ||
432 | |||
433 | module_i2c_driver(pv88060_regulator_driver); | ||
434 | |||
435 | MODULE_AUTHOR("James Ban <James.Ban.opensource@diasemi.com>"); | ||
436 | MODULE_DESCRIPTION("Regulator device driver for Powerventure PV88060"); | ||
437 | MODULE_LICENSE("GPL"); | ||
diff --git a/drivers/regulator/pv88060-regulator.h b/drivers/regulator/pv88060-regulator.h new file mode 100644 index 000000000000..02ca9203a172 --- /dev/null +++ b/drivers/regulator/pv88060-regulator.h | |||
@@ -0,0 +1,69 @@ | |||
1 | /* | ||
2 | * pv88060-regulator.h - Regulator definitions for PV88060 | ||
3 | * Copyright (C) 2015 Powerventure Semiconductor Ltd. | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or | ||
6 | * modify it under the terms of the GNU General Public License | ||
7 | * as published by the Free Software Foundation; either version 2 | ||
8 | * of the License, or (at your option) any later version. | ||
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 | #ifndef __PV88060_REGISTERS_H__ | ||
17 | #define __PV88060_REGISTERS_H__ | ||
18 | |||
19 | /* System Control and Event Registers */ | ||
20 | #define PV88060_REG_EVENT_A 0x04 | ||
21 | #define PV88060_REG_MASK_A 0x08 | ||
22 | #define PV88060_REG_MASK_B 0x09 | ||
23 | #define PV88060_REG_MASK_C 0x0A | ||
24 | |||
25 | /* Regulator Registers */ | ||
26 | #define PV88060_REG_BUCK1_CONF0 0x1B | ||
27 | #define PV88060_REG_BUCK1_CONF1 0x1C | ||
28 | #define PV88060_REG_LDO1_CONF 0x1D | ||
29 | #define PV88060_REG_LDO2_CONF 0x1E | ||
30 | #define PV88060_REG_LDO3_CONF 0x1F | ||
31 | #define PV88060_REG_LDO4_CONF 0x20 | ||
32 | #define PV88060_REG_LDO5_CONF 0x21 | ||
33 | #define PV88060_REG_LDO6_CONF 0x22 | ||
34 | #define PV88060_REG_LDO7_CONF 0x23 | ||
35 | |||
36 | #define PV88060_REG_SW1_CONF 0x3B | ||
37 | #define PV88060_REG_SW2_CONF 0x3C | ||
38 | #define PV88060_REG_SW3_CONF 0x3D | ||
39 | #define PV88060_REG_SW4_CONF 0x3E | ||
40 | #define PV88060_REG_SW5_CONF 0x3F | ||
41 | #define PV88060_REG_SW6_CONF 0x40 | ||
42 | |||
43 | /* PV88060_REG_EVENT_A (addr=0x04) */ | ||
44 | #define PV88060_E_VDD_FLT 0x01 | ||
45 | #define PV88060_E_OVER_TEMP 0x02 | ||
46 | |||
47 | /* PV88060_REG_MASK_A (addr=0x08) */ | ||
48 | #define PV88060_M_VDD_FLT 0x01 | ||
49 | #define PV88060_M_OVER_TEMP 0x02 | ||
50 | |||
51 | /* PV88060_REG_BUCK1_CONF0 (addr=0x1B) */ | ||
52 | #define PV88060_BUCK_EN 0x80 | ||
53 | #define PV88060_VBUCK_MASK 0x7F | ||
54 | /* PV88060_REG_LDO1/2/3/4/5/6/7_CONT */ | ||
55 | #define PV88060_LDO_EN 0x40 | ||
56 | #define PV88060_VLDO_MASK 0x3F | ||
57 | /* PV88060_REG_SW1/2/3/4/5_CONF */ | ||
58 | #define PV88060_SW_EN 0x80 | ||
59 | |||
60 | /* PV88060_REG_BUCK1_CONF1 (addr=0x1C) */ | ||
61 | #define PV88060_BUCK_ILIM_SHIFT 2 | ||
62 | #define PV88060_BUCK_ILIM_MASK 0x0C | ||
63 | #define PV88060_BUCK_MODE_SHIFT 0 | ||
64 | #define PV88060_BUCK_MODE_MASK 0x03 | ||
65 | #define PV88060_BUCK_MODE_SLEEP 0x00 | ||
66 | #define PV88060_BUCK_MODE_AUTO 0x01 | ||
67 | #define PV88060_BUCK_MODE_SYNC 0x02 | ||
68 | |||
69 | #endif /* __PV88060_REGISTERS_H__ */ | ||