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path: root/drivers/regulator/s2mps11.c
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Diffstat (limited to 'drivers/regulator/s2mps11.c')
-rw-r--r--drivers/regulator/s2mps11.c690
1 files changed, 554 insertions, 136 deletions
diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
index cd9ea2ea182..02e2fb2fca6 100644
--- a/drivers/regulator/s2mps11.c
+++ b/drivers/regulator/s2mps11.c
@@ -1,49 +1,59 @@
/*
* s2mps11.c
*
- * Copyright (c) 2012 Samsung Electronics Co., Ltd
+ * Copyright (c) 2012-2014 Samsung Electronics Co., Ltd
* http://www.samsung.com
*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
*
*/
#include <linux/bug.h>
-#include <linux/delay.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/regmap.h>
#include <linux/platform_device.h>
#include <linux/regulator/driver.h>
#include <linux/regulator/machine.h>
+#include <linux/regulator/of_regulator.h>
+#include <linux/of_gpio.h>
#include <linux/mfd/samsung/core.h>
#include <linux/mfd/samsung/s2mps11.h>
+#include <linux/mfd/samsung/s2mps14.h>
struct s2mps11_info {
- struct regulator_dev *rdev[S2MPS11_REGULATOR_MAX];
-
+ unsigned int rdev_num;
int ramp_delay2;
int ramp_delay34;
int ramp_delay5;
int ramp_delay16;
int ramp_delay7810;
int ramp_delay9;
-
- bool buck6_ramp;
- bool buck2_ramp;
- bool buck3_ramp;
- bool buck4_ramp;
+ /*
+ * One bit for each S2MPS14 regulator whether the suspend mode
+ * was enabled.
+ */
+ unsigned int s2mps14_suspend_state:30;
+ /* Array of size rdev_num with GPIO-s for external sleep control */
+ int *ext_control_gpio;
};
static int get_ramp_delay(int ramp_delay)
{
unsigned char cnt = 0;
- ramp_delay /= 6;
+ ramp_delay /= 6250;
while (true) {
ramp_delay = ramp_delay >> 1;
@@ -51,9 +61,172 @@ static int get_ramp_delay(int ramp_delay)
break;
cnt++;
}
+
+ if (cnt > 3)
+ cnt = 3;
+
return cnt;
}
+static int s2mps11_regulator_set_voltage_time_sel(struct regulator_dev *rdev,
+ unsigned int old_selector,
+ unsigned int new_selector)
+{
+ struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
+ unsigned int ramp_delay = 0;
+ int old_volt, new_volt;
+
+ switch (rdev_get_id(rdev)) {
+ case S2MPS11_BUCK2:
+ ramp_delay = s2mps11->ramp_delay2;
+ break;
+ case S2MPS11_BUCK3:
+ case S2MPS11_BUCK4:
+ ramp_delay = s2mps11->ramp_delay34;
+ break;
+ case S2MPS11_BUCK5:
+ ramp_delay = s2mps11->ramp_delay5;
+ break;
+ case S2MPS11_BUCK6:
+ case S2MPS11_BUCK1:
+ ramp_delay = s2mps11->ramp_delay16;
+ break;
+ case S2MPS11_BUCK7:
+ case S2MPS11_BUCK8:
+ case S2MPS11_BUCK10:
+ ramp_delay = s2mps11->ramp_delay7810;
+ break;
+ case S2MPS11_BUCK9:
+ ramp_delay = s2mps11->ramp_delay9;
+ }
+
+ if (ramp_delay == 0)
+ ramp_delay = rdev->desc->ramp_delay;
+
+ old_volt = rdev->desc->min_uV + (rdev->desc->uV_step * old_selector);
+ new_volt = rdev->desc->min_uV + (rdev->desc->uV_step * new_selector);
+
+ return DIV_ROUND_UP(abs(new_volt - old_volt), ramp_delay);
+}
+
+static int s2mps11_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
+{
+ struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
+ unsigned int ramp_val, ramp_shift, ramp_reg = S2MPS11_REG_RAMP_BUCK;
+ unsigned int ramp_enable = 1, enable_shift = 0;
+ int ret;
+
+ switch (rdev_get_id(rdev)) {
+ case S2MPS11_BUCK1:
+ if (ramp_delay > s2mps11->ramp_delay16)
+ s2mps11->ramp_delay16 = ramp_delay;
+ else
+ ramp_delay = s2mps11->ramp_delay16;
+
+ ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
+ break;
+ case S2MPS11_BUCK2:
+ enable_shift = S2MPS11_BUCK2_RAMP_EN_SHIFT;
+ if (!ramp_delay) {
+ ramp_enable = 0;
+ break;
+ }
+
+ s2mps11->ramp_delay2 = ramp_delay;
+ ramp_shift = S2MPS11_BUCK2_RAMP_SHIFT;
+ ramp_reg = S2MPS11_REG_RAMP;
+ break;
+ case S2MPS11_BUCK3:
+ enable_shift = S2MPS11_BUCK3_RAMP_EN_SHIFT;
+ if (!ramp_delay) {
+ ramp_enable = 0;
+ break;
+ }
+
+ if (ramp_delay > s2mps11->ramp_delay34)
+ s2mps11->ramp_delay34 = ramp_delay;
+ else
+ ramp_delay = s2mps11->ramp_delay34;
+
+ ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
+ ramp_reg = S2MPS11_REG_RAMP;
+ break;
+ case S2MPS11_BUCK4:
+ enable_shift = S2MPS11_BUCK4_RAMP_EN_SHIFT;
+ if (!ramp_delay) {
+ ramp_enable = 0;
+ break;
+ }
+
+ if (ramp_delay > s2mps11->ramp_delay34)
+ s2mps11->ramp_delay34 = ramp_delay;
+ else
+ ramp_delay = s2mps11->ramp_delay34;
+
+ ramp_shift = S2MPS11_BUCK34_RAMP_SHIFT;
+ ramp_reg = S2MPS11_REG_RAMP;
+ break;
+ case S2MPS11_BUCK5:
+ s2mps11->ramp_delay5 = ramp_delay;
+ ramp_shift = S2MPS11_BUCK5_RAMP_SHIFT;
+ break;
+ case S2MPS11_BUCK6:
+ enable_shift = S2MPS11_BUCK6_RAMP_EN_SHIFT;
+ if (!ramp_delay) {
+ ramp_enable = 0;
+ break;
+ }
+
+ if (ramp_delay > s2mps11->ramp_delay16)
+ s2mps11->ramp_delay16 = ramp_delay;
+ else
+ ramp_delay = s2mps11->ramp_delay16;
+
+ ramp_shift = S2MPS11_BUCK16_RAMP_SHIFT;
+ break;
+ case S2MPS11_BUCK7:
+ case S2MPS11_BUCK8:
+ case S2MPS11_BUCK10:
+ if (ramp_delay > s2mps11->ramp_delay7810)
+ s2mps11->ramp_delay7810 = ramp_delay;
+ else
+ ramp_delay = s2mps11->ramp_delay7810;
+
+ ramp_shift = S2MPS11_BUCK7810_RAMP_SHIFT;
+ break;
+ case S2MPS11_BUCK9:
+ s2mps11->ramp_delay9 = ramp_delay;
+ ramp_shift = S2MPS11_BUCK9_RAMP_SHIFT;
+ break;
+ default:
+ return 0;
+ }
+
+ if (!ramp_enable)
+ goto ramp_disable;
+
+ /* Ramp delay can be enabled/disabled only for buck[2346] */
+ if ((rdev_get_id(rdev) >= S2MPS11_BUCK2 &&
+ rdev_get_id(rdev) <= S2MPS11_BUCK4) ||
+ rdev_get_id(rdev) == S2MPS11_BUCK6) {
+ ret = regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
+ 1 << enable_shift, 1 << enable_shift);
+ if (ret) {
+ dev_err(&rdev->dev, "failed to enable ramp rate\n");
+ return ret;
+ }
+ }
+
+ ramp_val = get_ramp_delay(ramp_delay);
+
+ return regmap_update_bits(rdev->regmap, ramp_reg, 0x3 << ramp_shift,
+ ramp_val << ramp_shift);
+
+ramp_disable:
+ return regmap_update_bits(rdev->regmap, S2MPS11_REG_RAMP,
+ 1 << enable_shift, 0);
+}
+
static struct regulator_ops s2mps11_ldo_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
@@ -73,10 +246,11 @@ static struct regulator_ops s2mps11_buck_ops = {
.disable = regulator_disable_regmap,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
- .set_voltage_time_sel = regulator_set_voltage_time_sel,
+ .set_voltage_time_sel = s2mps11_regulator_set_voltage_time_sel,
+ .set_ramp_delay = s2mps11_set_ramp_delay,
};
-#define regulator_desc_ldo1(num) { \
+#define regulator_desc_s2mps11_ldo1(num) { \
.name = "LDO"#num, \
.id = S2MPS11_LDO##num, \
.ops = &s2mps11_ldo_ops, \
@@ -90,7 +264,7 @@ static struct regulator_ops s2mps11_buck_ops = {
.enable_reg = S2MPS11_REG_L1CTRL + num - 1, \
.enable_mask = S2MPS11_ENABLE_MASK \
}
-#define regulator_desc_ldo2(num) { \
+#define regulator_desc_s2mps11_ldo2(num) { \
.name = "LDO"#num, \
.id = S2MPS11_LDO##num, \
.ops = &s2mps11_ldo_ops, \
@@ -105,7 +279,7 @@ static struct regulator_ops s2mps11_buck_ops = {
.enable_mask = S2MPS11_ENABLE_MASK \
}
-#define regulator_desc_buck1_4(num) { \
+#define regulator_desc_s2mps11_buck1_4(num) { \
.name = "BUCK"#num, \
.id = S2MPS11_BUCK##num, \
.ops = &s2mps11_buck_ops, \
@@ -114,13 +288,14 @@ static struct regulator_ops s2mps11_buck_ops = {
.min_uV = S2MPS11_BUCK_MIN1, \
.uV_step = S2MPS11_BUCK_STEP1, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .ramp_delay = S2MPS11_RAMP_DELAY, \
.vsel_reg = S2MPS11_REG_B1CTRL2 + (num - 1) * 2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
.enable_reg = S2MPS11_REG_B1CTRL1 + (num - 1) * 2, \
.enable_mask = S2MPS11_ENABLE_MASK \
}
-#define regulator_desc_buck5 { \
+#define regulator_desc_s2mps11_buck5 { \
.name = "BUCK5", \
.id = S2MPS11_BUCK5, \
.ops = &s2mps11_buck_ops, \
@@ -129,13 +304,14 @@ static struct regulator_ops s2mps11_buck_ops = {
.min_uV = S2MPS11_BUCK_MIN1, \
.uV_step = S2MPS11_BUCK_STEP1, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .ramp_delay = S2MPS11_RAMP_DELAY, \
.vsel_reg = S2MPS11_REG_B5CTRL2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
.enable_reg = S2MPS11_REG_B5CTRL1, \
.enable_mask = S2MPS11_ENABLE_MASK \
}
-#define regulator_desc_buck6_8(num) { \
+#define regulator_desc_s2mps11_buck6_8(num) { \
.name = "BUCK"#num, \
.id = S2MPS11_BUCK##num, \
.ops = &s2mps11_buck_ops, \
@@ -144,13 +320,14 @@ static struct regulator_ops s2mps11_buck_ops = {
.min_uV = S2MPS11_BUCK_MIN1, \
.uV_step = S2MPS11_BUCK_STEP1, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .ramp_delay = S2MPS11_RAMP_DELAY, \
.vsel_reg = S2MPS11_REG_B6CTRL2 + (num - 6) * 2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
.enable_reg = S2MPS11_REG_B6CTRL1 + (num - 6) * 2, \
.enable_mask = S2MPS11_ENABLE_MASK \
}
-#define regulator_desc_buck9 { \
+#define regulator_desc_s2mps11_buck9 { \
.name = "BUCK9", \
.id = S2MPS11_BUCK9, \
.ops = &s2mps11_buck_ops, \
@@ -159,13 +336,14 @@ static struct regulator_ops s2mps11_buck_ops = {
.min_uV = S2MPS11_BUCK_MIN3, \
.uV_step = S2MPS11_BUCK_STEP3, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .ramp_delay = S2MPS11_RAMP_DELAY, \
.vsel_reg = S2MPS11_REG_B9CTRL2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
.enable_reg = S2MPS11_REG_B9CTRL1, \
.enable_mask = S2MPS11_ENABLE_MASK \
}
-#define regulator_desc_buck10 { \
+#define regulator_desc_s2mps11_buck10 { \
.name = "BUCK10", \
.id = S2MPS11_BUCK10, \
.ops = &s2mps11_buck_ops, \
@@ -174,152 +352,393 @@ static struct regulator_ops s2mps11_buck_ops = {
.min_uV = S2MPS11_BUCK_MIN2, \
.uV_step = S2MPS11_BUCK_STEP2, \
.n_voltages = S2MPS11_BUCK_N_VOLTAGES, \
+ .ramp_delay = S2MPS11_RAMP_DELAY, \
.vsel_reg = S2MPS11_REG_B10CTRL2, \
.vsel_mask = S2MPS11_BUCK_VSEL_MASK, \
.enable_reg = S2MPS11_REG_B10CTRL1, \
.enable_mask = S2MPS11_ENABLE_MASK \
}
-static struct regulator_desc regulators[] = {
- regulator_desc_ldo2(1),
- regulator_desc_ldo1(2),
- regulator_desc_ldo1(3),
- regulator_desc_ldo1(4),
- regulator_desc_ldo1(5),
- regulator_desc_ldo2(6),
- regulator_desc_ldo1(7),
- regulator_desc_ldo1(8),
- regulator_desc_ldo1(9),
- regulator_desc_ldo1(10),
- regulator_desc_ldo2(11),
- regulator_desc_ldo1(12),
- regulator_desc_ldo1(13),
- regulator_desc_ldo1(14),
- regulator_desc_ldo1(15),
- regulator_desc_ldo1(16),
- regulator_desc_ldo1(17),
- regulator_desc_ldo1(18),
- regulator_desc_ldo1(19),
- regulator_desc_ldo1(20),
- regulator_desc_ldo1(21),
- regulator_desc_ldo2(22),
- regulator_desc_ldo2(23),
- regulator_desc_ldo1(24),
- regulator_desc_ldo1(25),
- regulator_desc_ldo1(26),
- regulator_desc_ldo2(27),
- regulator_desc_ldo1(28),
- regulator_desc_ldo1(29),
- regulator_desc_ldo1(30),
- regulator_desc_ldo1(31),
- regulator_desc_ldo1(32),
- regulator_desc_ldo1(33),
- regulator_desc_ldo1(34),
- regulator_desc_ldo1(35),
- regulator_desc_ldo1(36),
- regulator_desc_ldo1(37),
- regulator_desc_ldo1(38),
- regulator_desc_buck1_4(1),
- regulator_desc_buck1_4(2),
- regulator_desc_buck1_4(3),
- regulator_desc_buck1_4(4),
- regulator_desc_buck5,
- regulator_desc_buck6_8(6),
- regulator_desc_buck6_8(7),
- regulator_desc_buck6_8(8),
- regulator_desc_buck9,
- regulator_desc_buck10,
+static const struct regulator_desc s2mps11_regulators[] = {
+ regulator_desc_s2mps11_ldo2(1),
+ regulator_desc_s2mps11_ldo1(2),
+ regulator_desc_s2mps11_ldo1(3),
+ regulator_desc_s2mps11_ldo1(4),
+ regulator_desc_s2mps11_ldo1(5),
+ regulator_desc_s2mps11_ldo2(6),
+ regulator_desc_s2mps11_ldo1(7),
+ regulator_desc_s2mps11_ldo1(8),
+ regulator_desc_s2mps11_ldo1(9),
+ regulator_desc_s2mps11_ldo1(10),
+ regulator_desc_s2mps11_ldo2(11),
+ regulator_desc_s2mps11_ldo1(12),
+ regulator_desc_s2mps11_ldo1(13),
+ regulator_desc_s2mps11_ldo1(14),
+ regulator_desc_s2mps11_ldo1(15),
+ regulator_desc_s2mps11_ldo1(16),
+ regulator_desc_s2mps11_ldo1(17),
+ regulator_desc_s2mps11_ldo1(18),
+ regulator_desc_s2mps11_ldo1(19),
+ regulator_desc_s2mps11_ldo1(20),
+ regulator_desc_s2mps11_ldo1(21),
+ regulator_desc_s2mps11_ldo2(22),
+ regulator_desc_s2mps11_ldo2(23),
+ regulator_desc_s2mps11_ldo1(24),
+ regulator_desc_s2mps11_ldo1(25),
+ regulator_desc_s2mps11_ldo1(26),
+ regulator_desc_s2mps11_ldo2(27),
+ regulator_desc_s2mps11_ldo1(28),
+ regulator_desc_s2mps11_ldo1(29),
+ regulator_desc_s2mps11_ldo1(30),
+ regulator_desc_s2mps11_ldo1(31),
+ regulator_desc_s2mps11_ldo1(32),
+ regulator_desc_s2mps11_ldo1(33),
+ regulator_desc_s2mps11_ldo1(34),
+ regulator_desc_s2mps11_ldo1(35),
+ regulator_desc_s2mps11_ldo1(36),
+ regulator_desc_s2mps11_ldo1(37),
+ regulator_desc_s2mps11_ldo1(38),
+ regulator_desc_s2mps11_buck1_4(1),
+ regulator_desc_s2mps11_buck1_4(2),
+ regulator_desc_s2mps11_buck1_4(3),
+ regulator_desc_s2mps11_buck1_4(4),
+ regulator_desc_s2mps11_buck5,
+ regulator_desc_s2mps11_buck6_8(6),
+ regulator_desc_s2mps11_buck6_8(7),
+ regulator_desc_s2mps11_buck6_8(8),
+ regulator_desc_s2mps11_buck9,
+ regulator_desc_s2mps11_buck10,
};
+static int s2mps14_regulator_enable(struct regulator_dev *rdev)
+{
+ struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
+ unsigned int val;
+
+ if (s2mps11->s2mps14_suspend_state & (1 << rdev_get_id(rdev)))
+ val = S2MPS14_ENABLE_SUSPEND;
+ else if (gpio_is_valid(s2mps11->ext_control_gpio[rdev_get_id(rdev)]))
+ val = S2MPS14_ENABLE_EXT_CONTROL;
+ else
+ val = rdev->desc->enable_mask;
+
+ return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+ rdev->desc->enable_mask, val);
+}
+
+static int s2mps14_regulator_set_suspend_disable(struct regulator_dev *rdev)
+{
+ int ret;
+ unsigned int val;
+ struct s2mps11_info *s2mps11 = rdev_get_drvdata(rdev);
+
+ /* LDO3 should be always on and does not support suspend mode */
+ if (rdev_get_id(rdev) == S2MPS14_LDO3)
+ return 0;
+
+ ret = regmap_read(rdev->regmap, rdev->desc->enable_reg, &val);
+ if (ret < 0)
+ return ret;
+
+ s2mps11->s2mps14_suspend_state |= (1 << rdev_get_id(rdev));
+ /*
+ * Don't enable suspend mode if regulator is already disabled because
+ * this would effectively for a short time turn on the regulator after
+ * resuming.
+ * However we still want to toggle the suspend_state bit for regulator
+ * in case if it got enabled before suspending the system.
+ */
+ if (!(val & rdev->desc->enable_mask))
+ return 0;
+
+ return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+ rdev->desc->enable_mask, S2MPS14_ENABLE_SUSPEND);
+}
+
+static struct regulator_ops s2mps14_reg_ops = {
+ .list_voltage = regulator_list_voltage_linear,
+ .map_voltage = regulator_map_voltage_linear,
+ .is_enabled = regulator_is_enabled_regmap,
+ .enable = s2mps14_regulator_enable,
+ .disable = regulator_disable_regmap,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+ .set_voltage_time_sel = regulator_set_voltage_time_sel,
+ .set_suspend_disable = s2mps14_regulator_set_suspend_disable,
+};
+
+#define regulator_desc_s2mps14_ldo1(num) { \
+ .name = "LDO"#num, \
+ .id = S2MPS14_LDO##num, \
+ .ops = &s2mps14_reg_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS14_LDO_MIN_800MV, \
+ .uV_step = S2MPS14_LDO_STEP_25MV, \
+ .n_voltages = S2MPS14_LDO_N_VOLTAGES, \
+ .vsel_reg = S2MPS14_REG_L1CTRL + num - 1, \
+ .vsel_mask = S2MPS14_LDO_VSEL_MASK, \
+ .enable_reg = S2MPS14_REG_L1CTRL + num - 1, \
+ .enable_mask = S2MPS14_ENABLE_MASK \
+}
+#define regulator_desc_s2mps14_ldo2(num) { \
+ .name = "LDO"#num, \
+ .id = S2MPS14_LDO##num, \
+ .ops = &s2mps14_reg_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS14_LDO_MIN_1800MV, \
+ .uV_step = S2MPS14_LDO_STEP_25MV, \
+ .n_voltages = S2MPS14_LDO_N_VOLTAGES, \
+ .vsel_reg = S2MPS14_REG_L1CTRL + num - 1, \
+ .vsel_mask = S2MPS14_LDO_VSEL_MASK, \
+ .enable_reg = S2MPS14_REG_L1CTRL + num - 1, \
+ .enable_mask = S2MPS14_ENABLE_MASK \
+}
+#define regulator_desc_s2mps14_ldo3(num) { \
+ .name = "LDO"#num, \
+ .id = S2MPS14_LDO##num, \
+ .ops = &s2mps14_reg_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS14_LDO_MIN_800MV, \
+ .uV_step = S2MPS14_LDO_STEP_12_5MV, \
+ .n_voltages = S2MPS14_LDO_N_VOLTAGES, \
+ .vsel_reg = S2MPS14_REG_L1CTRL + num - 1, \
+ .vsel_mask = S2MPS14_LDO_VSEL_MASK, \
+ .enable_reg = S2MPS14_REG_L1CTRL + num - 1, \
+ .enable_mask = S2MPS14_ENABLE_MASK \
+}
+#define regulator_desc_s2mps14_buck1235(num) { \
+ .name = "BUCK"#num, \
+ .id = S2MPS14_BUCK##num, \
+ .ops = &s2mps14_reg_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS14_BUCK1235_MIN_600MV, \
+ .uV_step = S2MPS14_BUCK1235_STEP_6_25MV, \
+ .n_voltages = S2MPS14_BUCK_N_VOLTAGES, \
+ .linear_min_sel = S2MPS14_BUCK1235_START_SEL, \
+ .ramp_delay = S2MPS14_BUCK_RAMP_DELAY, \
+ .vsel_reg = S2MPS14_REG_B1CTRL2 + (num - 1) * 2, \
+ .vsel_mask = S2MPS14_BUCK_VSEL_MASK, \
+ .enable_reg = S2MPS14_REG_B1CTRL1 + (num - 1) * 2, \
+ .enable_mask = S2MPS14_ENABLE_MASK \
+}
+#define regulator_desc_s2mps14_buck4(num) { \
+ .name = "BUCK"#num, \
+ .id = S2MPS14_BUCK##num, \
+ .ops = &s2mps14_reg_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .owner = THIS_MODULE, \
+ .min_uV = S2MPS14_BUCK4_MIN_1400MV, \
+ .uV_step = S2MPS14_BUCK4_STEP_12_5MV, \
+ .n_voltages = S2MPS14_BUCK_N_VOLTAGES, \
+ .linear_min_sel = S2MPS14_BUCK4_START_SEL, \
+ .ramp_delay = S2MPS14_BUCK_RAMP_DELAY, \
+ .vsel_reg = S2MPS14_REG_B1CTRL2 + (num - 1) * 2, \
+ .vsel_mask = S2MPS14_BUCK_VSEL_MASK, \
+ .enable_reg = S2MPS14_REG_B1CTRL1 + (num - 1) * 2, \
+ .enable_mask = S2MPS14_ENABLE_MASK \
+}
+
+static const struct regulator_desc s2mps14_regulators[] = {
+ regulator_desc_s2mps14_ldo3(1),
+ regulator_desc_s2mps14_ldo3(2),
+ regulator_desc_s2mps14_ldo1(3),
+ regulator_desc_s2mps14_ldo1(4),
+ regulator_desc_s2mps14_ldo3(5),
+ regulator_desc_s2mps14_ldo3(6),
+ regulator_desc_s2mps14_ldo1(7),
+ regulator_desc_s2mps14_ldo2(8),
+ regulator_desc_s2mps14_ldo3(9),
+ regulator_desc_s2mps14_ldo3(10),
+ regulator_desc_s2mps14_ldo1(11),
+ regulator_desc_s2mps14_ldo2(12),
+ regulator_desc_s2mps14_ldo2(13),
+ regulator_desc_s2mps14_ldo2(14),
+ regulator_desc_s2mps14_ldo2(15),
+ regulator_desc_s2mps14_ldo2(16),
+ regulator_desc_s2mps14_ldo2(17),
+ regulator_desc_s2mps14_ldo2(18),
+ regulator_desc_s2mps14_ldo1(19),
+ regulator_desc_s2mps14_ldo1(20),
+ regulator_desc_s2mps14_ldo1(21),
+ regulator_desc_s2mps14_ldo3(22),
+ regulator_desc_s2mps14_ldo1(23),
+ regulator_desc_s2mps14_ldo2(24),
+ regulator_desc_s2mps14_ldo2(25),
+ regulator_desc_s2mps14_buck1235(1),
+ regulator_desc_s2mps14_buck1235(2),
+ regulator_desc_s2mps14_buck1235(3),
+ regulator_desc_s2mps14_buck4(4),
+ regulator_desc_s2mps14_buck1235(5),
+};
+
+static int s2mps14_pmic_enable_ext_control(struct s2mps11_info *s2mps11,
+ struct regulator_dev *rdev)
+{
+ return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
+ rdev->desc->enable_mask, S2MPS14_ENABLE_EXT_CONTROL);
+}
+
+static void s2mps14_pmic_dt_parse_ext_control_gpio(struct platform_device *pdev,
+ struct of_regulator_match *rdata, struct s2mps11_info *s2mps11)
+{
+ int *gpio = s2mps11->ext_control_gpio;
+ unsigned int i;
+ unsigned int valid_regulators[3] = { S2MPS14_LDO10, S2MPS14_LDO11,
+ S2MPS14_LDO12 };
+
+ for (i = 0; i < ARRAY_SIZE(valid_regulators); i++) {
+ unsigned int reg = valid_regulators[i];
+
+ if (!rdata[reg].init_data || !rdata[reg].of_node)
+ continue;
+
+ gpio[reg] = of_get_named_gpio(rdata[reg].of_node,
+ "samsung,ext-control-gpios", 0);
+ if (gpio_is_valid(gpio[reg]))
+ dev_dbg(&pdev->dev, "Using GPIO %d for ext-control over %d/%s\n",
+ gpio[reg], reg, rdata[reg].name);
+ }
+}
+
+static int s2mps11_pmic_dt_parse(struct platform_device *pdev,
+ struct of_regulator_match *rdata, struct s2mps11_info *s2mps11,
+ enum sec_device_type dev_type)
+{
+ struct device_node *reg_np;
+
+ reg_np = of_get_child_by_name(pdev->dev.parent->of_node, "regulators");
+ if (!reg_np) {
+ dev_err(&pdev->dev, "could not find regulators sub-node\n");
+ return -EINVAL;
+ }
+
+ of_regulator_match(&pdev->dev, reg_np, rdata, s2mps11->rdev_num);
+ if (dev_type == S2MPS14X)
+ s2mps14_pmic_dt_parse_ext_control_gpio(pdev, rdata, s2mps11);
+
+ of_node_put(reg_np);
+
+ return 0;
+}
+
static int s2mps11_pmic_probe(struct platform_device *pdev)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
- struct sec_platform_data *pdata = dev_get_platdata(iodev->dev);
+ struct sec_platform_data *pdata = NULL;
+ struct of_regulator_match *rdata = NULL;
struct regulator_config config = { };
struct s2mps11_info *s2mps11;
- int i, ret;
- unsigned char ramp_enable, ramp_reg = 0;
-
- if (!pdata) {
- dev_err(pdev->dev.parent, "Platform data not supplied\n");
- return -ENODEV;
- }
+ int i, ret = 0;
+ const struct regulator_desc *regulators;
+ enum sec_device_type dev_type;
s2mps11 = devm_kzalloc(&pdev->dev, sizeof(struct s2mps11_info),
GFP_KERNEL);
if (!s2mps11)
return -ENOMEM;
- platform_set_drvdata(pdev, s2mps11);
-
- s2mps11->ramp_delay2 = pdata->buck2_ramp_delay;
- s2mps11->ramp_delay34 = pdata->buck34_ramp_delay;
- s2mps11->ramp_delay5 = pdata->buck5_ramp_delay;
- s2mps11->ramp_delay16 = pdata->buck16_ramp_delay;
- s2mps11->ramp_delay7810 = pdata->buck7810_ramp_delay;
- s2mps11->ramp_delay9 = pdata->buck9_ramp_delay;
-
- s2mps11->buck6_ramp = pdata->buck6_ramp_enable;
- s2mps11->buck2_ramp = pdata->buck2_ramp_enable;
- s2mps11->buck3_ramp = pdata->buck3_ramp_enable;
- s2mps11->buck4_ramp = pdata->buck4_ramp_enable;
-
- ramp_enable = (s2mps11->buck2_ramp << 3) | (s2mps11->buck3_ramp << 2) |
- (s2mps11->buck4_ramp << 1) | s2mps11->buck6_ramp ;
-
- if (ramp_enable) {
- if (s2mps11->buck2_ramp)
- ramp_reg |= get_ramp_delay(s2mps11->ramp_delay2) << 6;
- if (s2mps11->buck3_ramp || s2mps11->buck4_ramp)
- ramp_reg |= get_ramp_delay(s2mps11->ramp_delay34) << 4;
- sec_reg_write(iodev, S2MPS11_REG_RAMP, ramp_reg | ramp_enable);
+ dev_type = platform_get_device_id(pdev)->driver_data;
+ switch (dev_type) {
+ case S2MPS11X:
+ s2mps11->rdev_num = ARRAY_SIZE(s2mps11_regulators);
+ regulators = s2mps11_regulators;
+ break;
+ case S2MPS14X:
+ s2mps11->rdev_num = ARRAY_SIZE(s2mps14_regulators);
+ regulators = s2mps14_regulators;
+ break;
+ default:
+ dev_err(&pdev->dev, "Invalid device type: %u\n", dev_type);
+ return -EINVAL;
+ };
+
+ s2mps11->ext_control_gpio = devm_kzalloc(&pdev->dev,
+ sizeof(*s2mps11->ext_control_gpio) * s2mps11->rdev_num,
+ GFP_KERNEL);
+ if (!s2mps11->ext_control_gpio)
+ return -ENOMEM;
+ /*
+ * 0 is a valid GPIO so initialize all GPIO-s to negative value
+ * to indicate that external control won't be used for this regulator.
+ */
+ for (i = 0; i < s2mps11->rdev_num; i++)
+ s2mps11->ext_control_gpio[i] = -EINVAL;
+
+ if (!iodev->dev->of_node) {
+ if (iodev->pdata) {
+ pdata = iodev->pdata;
+ goto common_reg;
+ } else {
+ dev_err(pdev->dev.parent,
+ "Platform data or DT node not supplied\n");
+ return -ENODEV;
+ }
}
- ramp_reg &= 0x00;
- ramp_reg |= get_ramp_delay(s2mps11->ramp_delay5) << 6;
- ramp_reg |= get_ramp_delay(s2mps11->ramp_delay16) << 4;
- ramp_reg |= get_ramp_delay(s2mps11->ramp_delay7810) << 2;
- ramp_reg |= get_ramp_delay(s2mps11->ramp_delay9);
- sec_reg_write(iodev, S2MPS11_REG_RAMP_BUCK, ramp_reg);
+ rdata = kzalloc(sizeof(*rdata) * s2mps11->rdev_num, GFP_KERNEL);
+ if (!rdata)
+ return -ENOMEM;
- for (i = 0; i < S2MPS11_REGULATOR_MAX; i++) {
+ for (i = 0; i < s2mps11->rdev_num; i++)
+ rdata[i].name = regulators[i].name;
- config.dev = &pdev->dev;
- config.regmap = iodev->regmap;
- config.init_data = pdata->regulators[i].initdata;
- config.driver_data = s2mps11;
+ ret = s2mps11_pmic_dt_parse(pdev, rdata, s2mps11, dev_type);
+ if (ret)
+ goto out;
- s2mps11->rdev[i] = regulator_register(&regulators[i], &config);
- if (IS_ERR(s2mps11->rdev[i])) {
- ret = PTR_ERR(s2mps11->rdev[i]);
+common_reg:
+ platform_set_drvdata(pdev, s2mps11);
+
+ config.dev = &pdev->dev;
+ config.regmap = iodev->regmap_pmic;
+ config.driver_data = s2mps11;
+ config.ena_gpio_flags = GPIOF_OUT_INIT_HIGH;
+ for (i = 0; i < s2mps11->rdev_num; i++) {
+ struct regulator_dev *regulator;
+
+ if (pdata) {
+ config.init_data = pdata->regulators[i].initdata;
+ config.of_node = pdata->regulators[i].reg_node;
+ } else {
+ config.init_data = rdata[i].init_data;
+ config.of_node = rdata[i].of_node;
+ }
+ config.ena_gpio = s2mps11->ext_control_gpio[i];
+
+ regulator = devm_regulator_register(&pdev->dev,
+ &regulators[i], &config);
+ if (IS_ERR(regulator)) {
+ ret = PTR_ERR(regulator);
dev_err(&pdev->dev, "regulator init failed for %d\n",
i);
- s2mps11->rdev[i] = NULL;
- goto err;
+ goto out;
+ }
+
+ if (gpio_is_valid(s2mps11->ext_control_gpio[i])) {
+ ret = s2mps14_pmic_enable_ext_control(s2mps11,
+ regulator);
+ if (ret < 0) {
+ dev_err(&pdev->dev,
+ "failed to enable GPIO control over %s: %d\n",
+ regulator->desc->name, ret);
+ goto out;
+ }
}
}
- return 0;
-err:
- for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
- regulator_unregister(s2mps11->rdev[i]);
+out:
+ kfree(rdata);
return ret;
}
-static int s2mps11_pmic_remove(struct platform_device *pdev)
-{
- struct s2mps11_info *s2mps11 = platform_get_drvdata(pdev);
- int i;
-
- for (i = 0; i < S2MPS11_REGULATOR_MAX; i++)
- regulator_unregister(s2mps11->rdev[i]);
-
- return 0;
-}
-
static const struct platform_device_id s2mps11_pmic_id[] = {
- { "s2mps11-pmic", 0},
+ { "s2mps11-pmic", S2MPS11X},
+ { "s2mps14-pmic", S2MPS14X},
{ },
};
MODULE_DEVICE_TABLE(platform, s2mps11_pmic_id);
@@ -330,7 +749,6 @@ static struct platform_driver s2mps11_pmic_driver = {
.owner = THIS_MODULE,
},
.probe = s2mps11_pmic_probe,
- .remove = s2mps11_pmic_remove,
.id_table = s2mps11_pmic_id,
};
@@ -348,5 +766,5 @@ module_exit(s2mps11_pmic_exit);
/* Module information */
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
-MODULE_DESCRIPTION("SAMSUNG S2MPS11 Regulator Driver");
+MODULE_DESCRIPTION("SAMSUNG S2MPS11/S2MPS14 Regulator Driver");
MODULE_LICENSE("GPL");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 14:46:57 +0000