/*
* Regulator Driver for Freescale MC13783 PMIC
*
+ * Copyright 2010 Yong Shen <yong.shen@linaro.org>
* Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
* Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
*
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/err.h>
+#include "mc13xxx.h"
#define MC13783_REG_SWITCHERS5 29
#define MC13783_REG_SWITCHERS5_SW3EN (1 << 20)
#define MC13783_REG_POWERMISC_PWGTSPI_M (3 << 15)
-struct mc13783_regulator {
- struct regulator_desc desc;
- int reg;
- int enable_bit;
- int vsel_reg;
- int vsel_shift;
- int vsel_mask;
- int const *voltages;
-};
-
/* Voltage Values */
static const int mc13783_sw3_val[] = {
5000000, 5000000, 5000000, 5500000,
5500000,
};
-static struct regulator_ops mc13783_regulator_ops;
-static struct regulator_ops mc13783_fixed_regulator_ops;
static struct regulator_ops mc13783_gpo_regulator_ops;
-#define MC13783_DEFINE(prefix, _name, _reg, _vsel_reg, _voltages) \
- [MC13783_ ## prefix ## _ ## _name] = { \
- .desc = { \
- .name = #prefix "_" #_name, \
- .n_voltages = ARRAY_SIZE(_voltages), \
- .ops = &mc13783_regulator_ops, \
- .type = REGULATOR_VOLTAGE, \
- .id = MC13783_ ## prefix ## _ ## _name, \
- .owner = THIS_MODULE, \
- }, \
- .reg = MC13783_REG_ ## _reg, \
- .enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
- .vsel_reg = MC13783_REG_ ## _vsel_reg, \
- .vsel_shift = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL,\
- .vsel_mask = MC13783_REG_ ## _vsel_reg ## _ ## _name ## VSEL_M,\
- .voltages = _voltages, \
- }
+#define MC13783_DEFINE(prefix, name, reg, vsel_reg, voltages) \
+ MC13xxx_DEFINE(MC13783_REG_, name, reg, vsel_reg, voltages, \
+ mc13xxx_regulator_ops)
-#define MC13783_FIXED_DEFINE(prefix, _name, _reg, _voltages) \
- [MC13783_ ## prefix ## _ ## _name] = { \
- .desc = { \
- .name = #prefix "_" #_name, \
- .n_voltages = ARRAY_SIZE(_voltages), \
- .ops = &mc13783_fixed_regulator_ops, \
- .type = REGULATOR_VOLTAGE, \
- .id = MC13783_ ## prefix ## _ ## _name, \
- .owner = THIS_MODULE, \
- }, \
- .reg = MC13783_REG_ ## _reg, \
- .enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
- .voltages = _voltages, \
- }
+#define MC13783_FIXED_DEFINE(prefix, name, reg, voltages) \
+ MC13xxx_FIXED_DEFINE(MC13783_REG_, name, reg, voltages, \
+ mc13xxx_fixed_regulator_ops)
-#define MC13783_GPO_DEFINE(prefix, _name, _reg, _voltages) \
- [MC13783_ ## prefix ## _ ## _name] = { \
- .desc = { \
- .name = #prefix "_" #_name, \
- .n_voltages = ARRAY_SIZE(_voltages), \
- .ops = &mc13783_gpo_regulator_ops, \
- .type = REGULATOR_VOLTAGE, \
- .id = MC13783_ ## prefix ## _ ## _name, \
- .owner = THIS_MODULE, \
- }, \
- .reg = MC13783_REG_ ## _reg, \
- .enable_bit = MC13783_REG_ ## _reg ## _ ## _name ## EN, \
- .voltages = _voltages, \
- }
+#define MC13783_GPO_DEFINE(prefix, name, reg, voltages) \
+ MC13xxx_GPO_DEFINE(MC13783_REG_, name, reg, voltages, \
+ mc13783_gpo_regulator_ops)
#define MC13783_DEFINE_SW(_name, _reg, _vsel_reg, _voltages) \
MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages)
#define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages) \
MC13783_DEFINE(REG, _name, _reg, _vsel_reg, _voltages)
-static struct mc13783_regulator mc13783_regulators[] = {
+static struct mc13xxx_regulator mc13783_regulators[] = {
MC13783_DEFINE_SW(SW3, SWITCHERS5, SWITCHERS5, mc13783_sw3_val),
MC13783_FIXED_DEFINE(REG, VAUDIO, REGULATORMODE0, mc13783_vaudio_val),
MC13783_GPO_DEFINE(REG, PWGT2SPI, POWERMISC, mc13783_pwgtdrv_val),
};
-struct mc13783_regulator_priv {
- struct mc13783 *mc13783;
- u32 powermisc_pwgt_state;
- struct regulator_dev *regulators[];
-};
-
-static int mc13783_regulator_enable(struct regulator_dev *rdev)
-{
- struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
- int id = rdev_get_id(rdev);
- int ret;
-
- dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
-
- mc13783_lock(priv->mc13783);
- ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
- mc13783_regulators[id].enable_bit,
- mc13783_regulators[id].enable_bit);
- mc13783_unlock(priv->mc13783);
-
- return ret;
-}
-
-static int mc13783_regulator_disable(struct regulator_dev *rdev)
-{
- struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
- int id = rdev_get_id(rdev);
- int ret;
-
- dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
-
- mc13783_lock(priv->mc13783);
- ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].reg,
- mc13783_regulators[id].enable_bit, 0);
- mc13783_unlock(priv->mc13783);
-
- return ret;
-}
-
-static int mc13783_regulator_is_enabled(struct regulator_dev *rdev)
-{
- struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
- int ret, id = rdev_get_id(rdev);
- unsigned int val;
-
- mc13783_lock(priv->mc13783);
- ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
- mc13783_unlock(priv->mc13783);
-
- if (ret)
- return ret;
-
- return (val & mc13783_regulators[id].enable_bit) != 0;
-}
-
-static int mc13783_regulator_list_voltage(struct regulator_dev *rdev,
- unsigned selector)
-{
- int id = rdev_get_id(rdev);
-
- if (selector >= mc13783_regulators[id].desc.n_voltages)
- return -EINVAL;
-
- return mc13783_regulators[id].voltages[selector];
-}
-
-static int mc13783_get_best_voltage_index(struct regulator_dev *rdev,
- int min_uV, int max_uV)
-{
- int reg_id = rdev_get_id(rdev);
- int i;
- int bestmatch;
- int bestindex;
-
- /*
- * Locate the minimum voltage fitting the criteria on
- * this regulator. The switchable voltages are not
- * in strict falling order so we need to check them
- * all for the best match.
- */
- bestmatch = INT_MAX;
- bestindex = -1;
- for (i = 0; i < mc13783_regulators[reg_id].desc.n_voltages; i++) {
- if (mc13783_regulators[reg_id].voltages[i] >= min_uV &&
- mc13783_regulators[reg_id].voltages[i] < bestmatch) {
- bestmatch = mc13783_regulators[reg_id].voltages[i];
- bestindex = i;
- }
- }
-
- if (bestindex < 0 || bestmatch > max_uV) {
- dev_warn(&rdev->dev, "no possible value for %d<=x<=%d uV\n",
- min_uV, max_uV);
- return -EINVAL;
- }
- return bestindex;
-}
-
-static int mc13783_regulator_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV,
- unsigned *selector)
-{
- struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
- int value, id = rdev_get_id(rdev);
- int ret;
-
- dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
- __func__, id, min_uV, max_uV);
-
- /* Find the best index */
- value = mc13783_get_best_voltage_index(rdev, min_uV, max_uV);
- dev_dbg(rdev_get_dev(rdev), "%s best value: %d \n", __func__, value);
- if (value < 0)
- return value;
-
- *selector = value;
-
- mc13783_lock(priv->mc13783);
- ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].vsel_reg,
- mc13783_regulators[id].vsel_mask,
- value << mc13783_regulators[id].vsel_shift);
- mc13783_unlock(priv->mc13783);
-
- return ret;
-}
-
-static int mc13783_regulator_get_voltage(struct regulator_dev *rdev)
-{
- struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
- int ret, id = rdev_get_id(rdev);
- unsigned int val;
-
- dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
-
- mc13783_lock(priv->mc13783);
- ret = mc13783_reg_read(priv->mc13783,
- mc13783_regulators[id].vsel_reg, &val);
- mc13783_unlock(priv->mc13783);
-
- if (ret)
- return ret;
-
- val = (val & mc13783_regulators[id].vsel_mask)
- >> mc13783_regulators[id].vsel_shift;
-
- dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);
-
- BUG_ON(val < 0 || val > mc13783_regulators[id].desc.n_voltages);
-
- return mc13783_regulators[id].voltages[val];
-}
-
-static struct regulator_ops mc13783_regulator_ops = {
- .enable = mc13783_regulator_enable,
- .disable = mc13783_regulator_disable,
- .is_enabled = mc13783_regulator_is_enabled,
- .list_voltage = mc13783_regulator_list_voltage,
- .set_voltage = mc13783_regulator_set_voltage,
- .get_voltage = mc13783_regulator_get_voltage,
-};
-
-static int mc13783_fixed_regulator_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV,
- unsigned int *selector)
-{
- int id = rdev_get_id(rdev);
-
- dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
- __func__, id, min_uV, max_uV);
-
- *selector = 0;
-
- if (min_uV >= mc13783_regulators[id].voltages[0] &&
- max_uV <= mc13783_regulators[id].voltages[0])
- return 0;
- else
- return -EINVAL;
-}
-
-static int mc13783_fixed_regulator_get_voltage(struct regulator_dev *rdev)
-{
- int id = rdev_get_id(rdev);
-
- dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
-
- return mc13783_regulators[id].voltages[0];
-}
-
-static struct regulator_ops mc13783_fixed_regulator_ops = {
- .enable = mc13783_regulator_enable,
- .disable = mc13783_regulator_disable,
- .is_enabled = mc13783_regulator_is_enabled,
- .list_voltage = mc13783_regulator_list_voltage,
- .set_voltage = mc13783_fixed_regulator_set_voltage,
- .get_voltage = mc13783_fixed_regulator_get_voltage,
-};
-
-static int mc13783_powermisc_rmw(struct mc13783_regulator_priv *priv, u32 mask,
- u32 val)
+static int mc13783_powermisc_rmw(struct mc13xxx_regulator_priv *priv, u32 mask,
+ u32 val)
{
- struct mc13783 *mc13783 = priv->mc13783;
+ struct mc13xxx *mc13783 = priv->mc13xxx;
int ret;
u32 valread;
BUG_ON(val & ~mask);
- ret = mc13783_reg_read(mc13783, MC13783_REG_POWERMISC, &valread);
+ ret = mc13xxx_reg_read(mc13783, MC13783_REG_POWERMISC, &valread);
if (ret)
return ret;
valread = (valread & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
priv->powermisc_pwgt_state;
- return mc13783_reg_write(mc13783, MC13783_REG_POWERMISC, valread);
+ return mc13xxx_reg_write(mc13783, MC13783_REG_POWERMISC, valread);
}
static int mc13783_gpo_regulator_enable(struct regulator_dev *rdev)
{
- struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
int id = rdev_get_id(rdev);
int ret;
- u32 en_val = mc13783_regulators[id].enable_bit;
+ u32 en_val = mc13xxx_regulators[id].enable_bit;
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
id == MC13783_REG_PWGT2SPI)
en_val = 0;
- mc13783_lock(priv->mc13783);
- ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit,
+ mc13xxx_lock(priv->mc13xxx);
+ ret = mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit,
en_val);
- mc13783_unlock(priv->mc13783);
+ mc13xxx_unlock(priv->mc13xxx);
return ret;
}
static int mc13783_gpo_regulator_disable(struct regulator_dev *rdev)
{
- struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
int id = rdev_get_id(rdev);
int ret;
u32 dis_val = 0;
/* Power Gate disable value is 1 */
if (id == MC13783_REG_PWGT1SPI ||
id == MC13783_REG_PWGT2SPI)
- dis_val = mc13783_regulators[id].enable_bit;
+ dis_val = mc13xxx_regulators[id].enable_bit;
- mc13783_lock(priv->mc13783);
- ret = mc13783_powermisc_rmw(priv, mc13783_regulators[id].enable_bit,
+ mc13xxx_lock(priv->mc13xxx);
+ ret = mc13783_powermisc_rmw(priv, mc13xxx_regulators[id].enable_bit,
dis_val);
- mc13783_unlock(priv->mc13783);
+ mc13xxx_unlock(priv->mc13xxx);
return ret;
}
static int mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev)
{
- struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
int ret, id = rdev_get_id(rdev);
unsigned int val;
- mc13783_lock(priv->mc13783);
- ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
- mc13783_unlock(priv->mc13783);
+ mc13xxx_lock(priv->mc13xxx);
+ ret = mc13xxx_reg_read(priv->mc13xxx, mc13xxx_regulators[id].reg, &val);
+ mc13xxx_unlock(priv->mc13xxx);
if (ret)
return ret;
val = (val & ~MC13783_REG_POWERMISC_PWGTSPI_M) |
(priv->powermisc_pwgt_state ^ MC13783_REG_POWERMISC_PWGTSPI_M);
- return (val & mc13783_regulators[id].enable_bit) != 0;
+ return (val & mc13xxx_regulators[id].enable_bit) != 0;
}
static struct regulator_ops mc13783_gpo_regulator_ops = {
.enable = mc13783_gpo_regulator_enable,
.disable = mc13783_gpo_regulator_disable,
.is_enabled = mc13783_gpo_regulator_is_enabled,
- .list_voltage = mc13783_regulator_list_voltage,
- .set_voltage = mc13783_fixed_regulator_set_voltage,
- .get_voltage = mc13783_fixed_regulator_get_voltage,
+ .list_voltage = mc13xxx_regulator_list_voltage,
+ .set_voltage = mc13xxx_fixed_regulator_set_voltage,
+ .get_voltage = mc13xxx_fixed_regulator_get_voltage,
};
static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
{
- struct mc13783_regulator_priv *priv;
- struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);
+ struct mc13xxx_regulator_priv *priv;
+ struct mc13xxx *mc13783 = dev_get_drvdata(pdev->dev.parent);
struct mc13783_regulator_platform_data *pdata =
dev_get_platdata(&pdev->dev);
struct mc13783_regulator_init_data *init_data;
if (!priv)
return -ENOMEM;
- priv->mc13783 = mc13783;
+ priv->mc13xxx_regulators = mc13783_regulators;
+ priv->mc13xxx = mc13783;
for (i = 0; i < pdata->num_regulators; i++) {
init_data = &pdata->regulators[i];
static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
{
- struct mc13783_regulator_priv *priv = platform_get_drvdata(pdev);
+ struct mc13xxx_regulator_priv *priv = platform_get_drvdata(pdev);
struct mc13783_regulator_platform_data *pdata =
dev_get_platdata(&pdev->dev);
int i;
--- /dev/null
+/*
+ * Regulator Driver for Freescale MC13xxx PMIC
+ *
+ * Copyright 2010 Yong Shen <yong.shen@linaro.org>
+ *
+ * Based on mc13783 regulator driver :
+ * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
+ * Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Regs infos taken from mc13xxx drivers from freescale and mc13xxx.pdf file
+ * from freescale
+ */
+
+#include <linux/mfd/mc13xxx.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/driver.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/err.h>
+#include "mc13xxx.h"
+
+static int mc13xxx_regulator_enable(struct regulator_dev *rdev)
+{
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+ int id = rdev_get_id(rdev);
+ int ret;
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+ mc13xxx_lock(priv->mc13xxx);
+ ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].reg,
+ mc13xxx_regulators[id].enable_bit,
+ mc13xxx_regulators[id].enable_bit);
+ mc13xxx_unlock(priv->mc13xxx);
+
+ return ret;
+}
+
+static int mc13xxx_regulator_disable(struct regulator_dev *rdev)
+{
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+ int id = rdev_get_id(rdev);
+ int ret;
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+ mc13xxx_lock(priv->mc13xxx);
+ ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].reg,
+ mc13xxx_regulators[id].enable_bit, 0);
+ mc13xxx_unlock(priv->mc13xxx);
+
+ return ret;
+}
+
+static int mc13xxx_regulator_is_enabled(struct regulator_dev *rdev)
+{
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+ int ret, id = rdev_get_id(rdev);
+ unsigned int val;
+
+ mc13xxx_lock(priv->mc13xxx);
+ ret = mc13xxx_reg_read(priv->mc13xxx, mc13xxx_regulators[id].reg, &val);
+ mc13xxx_unlock(priv->mc13xxx);
+
+ if (ret)
+ return ret;
+
+ return (val & mc13xxx_regulators[id].enable_bit) != 0;
+}
+
+int mc13xxx_regulator_list_voltage(struct regulator_dev *rdev,
+ unsigned selector)
+{
+ int id = rdev_get_id(rdev);
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+
+ if (selector >= mc13xxx_regulators[id].desc.n_voltages)
+ return -EINVAL;
+
+ return mc13xxx_regulators[id].voltages[selector];
+}
+
+int mc13xxx_get_best_voltage_index(struct regulator_dev *rdev,
+ int min_uV, int max_uV)
+{
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+ int reg_id = rdev_get_id(rdev);
+ int i;
+ int bestmatch;
+ int bestindex;
+
+ /*
+ * Locate the minimum voltage fitting the criteria on
+ * this regulator. The switchable voltages are not
+ * in strict falling order so we need to check them
+ * all for the best match.
+ */
+ bestmatch = INT_MAX;
+ bestindex = -1;
+ for (i = 0; i < mc13xxx_regulators[reg_id].desc.n_voltages; i++) {
+ if (mc13xxx_regulators[reg_id].voltages[i] >= min_uV &&
+ mc13xxx_regulators[reg_id].voltages[i] < bestmatch) {
+ bestmatch = mc13xxx_regulators[reg_id].voltages[i];
+ bestindex = i;
+ }
+ }
+
+ if (bestindex < 0 || bestmatch > max_uV) {
+ dev_warn(&rdev->dev, "no possible value for %d<=x<=%d uV\n",
+ min_uV, max_uV);
+ return -EINVAL;
+ }
+ return bestindex;
+}
+
+static int mc13xxx_regulator_set_voltage(struct regulator_dev *rdev, int min_uV,
+ int max_uV, unsigned *selector)
+{
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+ int value, id = rdev_get_id(rdev);
+ int ret;
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
+ __func__, id, min_uV, max_uV);
+
+ /* Find the best index */
+ value = mc13xxx_get_best_voltage_index(rdev, min_uV, max_uV);
+ dev_dbg(rdev_get_dev(rdev), "%s best value: %d\n", __func__, value);
+ if (value < 0)
+ return value;
+
+ mc13xxx_lock(priv->mc13xxx);
+ ret = mc13xxx_reg_rmw(priv->mc13xxx, mc13xxx_regulators[id].vsel_reg,
+ mc13xxx_regulators[id].vsel_mask,
+ value << mc13xxx_regulators[id].vsel_shift);
+ mc13xxx_unlock(priv->mc13xxx);
+
+ return ret;
+}
+
+static int mc13xxx_regulator_get_voltage(struct regulator_dev *rdev)
+{
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+ int ret, id = rdev_get_id(rdev);
+ unsigned int val;
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+ mc13xxx_lock(priv->mc13xxx);
+ ret = mc13xxx_reg_read(priv->mc13xxx,
+ mc13xxx_regulators[id].vsel_reg, &val);
+ mc13xxx_unlock(priv->mc13xxx);
+
+ if (ret)
+ return ret;
+
+ val = (val & mc13xxx_regulators[id].vsel_mask)
+ >> mc13xxx_regulators[id].vsel_shift;
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d val: %d\n", __func__, id, val);
+
+ BUG_ON(val < 0 || val > mc13xxx_regulators[id].desc.n_voltages);
+
+ return mc13xxx_regulators[id].voltages[val];
+}
+
+struct regulator_ops mc13xxx_regulator_ops = {
+ .enable = mc13xxx_regulator_enable,
+ .disable = mc13xxx_regulator_disable,
+ .is_enabled = mc13xxx_regulator_is_enabled,
+ .list_voltage = mc13xxx_regulator_list_voltage,
+ .set_voltage = mc13xxx_regulator_set_voltage,
+ .get_voltage = mc13xxx_regulator_get_voltage,
+};
+
+int mc13xxx_fixed_regulator_set_voltage(struct regulator_dev *rdev, int min_uV,
+ int max_uV, unsigned *selector)
+{
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+ int id = rdev_get_id(rdev);
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
+ __func__, id, min_uV, max_uV);
+
+ if (min_uV >= mc13xxx_regulators[id].voltages[0] &&
+ max_uV <= mc13xxx_regulators[id].voltages[0])
+ return 0;
+ else
+ return -EINVAL;
+}
+
+int mc13xxx_fixed_regulator_get_voltage(struct regulator_dev *rdev)
+{
+ struct mc13xxx_regulator_priv *priv = rdev_get_drvdata(rdev);
+ struct mc13xxx_regulator *mc13xxx_regulators = priv->mc13xxx_regulators;
+ int id = rdev_get_id(rdev);
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+ return mc13xxx_regulators[id].voltages[0];
+}
+
+struct regulator_ops mc13xxx_fixed_regulator_ops = {
+ .enable = mc13xxx_regulator_enable,
+ .disable = mc13xxx_regulator_disable,
+ .is_enabled = mc13xxx_regulator_is_enabled,
+ .list_voltage = mc13xxx_regulator_list_voltage,
+ .set_voltage = mc13xxx_fixed_regulator_set_voltage,
+ .get_voltage = mc13xxx_fixed_regulator_get_voltage,
+};
+
+int mc13xxx_sw_regulator_is_enabled(struct regulator_dev *rdev)
+{
+ return 1;
+}
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Yong Shen <yong.shen@linaro.org>");
+MODULE_DESCRIPTION("Regulator Driver for Freescale MC13xxx PMIC");
+MODULE_ALIAS("mc13xxx-regulator-core");
--- /dev/null
+/*
+ * mc13xxx.h - regulators for the Freescale mc13xxx PMIC
+ *
+ * Copyright (C) 2010 Yong Shen <yong.shen@linaro.org>
+ *
+ * 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.
+ */
+
+#ifndef __LINUX_REGULATOR_MC13XXX_H
+#define __LINUX_REGULATOR_MC13XXX_H
+
+#include <linux/regulator/driver.h>
+
+struct mc13xxx_regulator {
+ struct regulator_desc desc;
+ int reg;
+ int enable_bit;
+ int vsel_reg;
+ int vsel_shift;
+ int vsel_mask;
+ int hi_bit;
+ int const *voltages;
+};
+
+struct mc13xxx_regulator_priv {
+ struct mc13xxx *mc13xxx;
+ u32 powermisc_pwgt_state;
+ struct mc13xxx_regulator *mc13xxx_regulators;
+ struct regulator_dev *regulators[];
+};
+
+extern int mc13xxx_sw_regulator(struct regulator_dev *rdev);
+extern int mc13xxx_sw_regulator_is_enabled(struct regulator_dev *rdev);
+extern int mc13xxx_get_best_voltage_index(struct regulator_dev *rdev,
+ int min_uV, int max_uV);
+extern int mc13xxx_regulator_list_voltage(struct regulator_dev *rdev,
+ unsigned selector);
+extern int mc13xxx_fixed_regulator_set_voltage(struct regulator_dev *rdev,
+ int min_uV, int max_uV, unsigned *selector);
+extern int mc13xxx_fixed_regulator_get_voltage(struct regulator_dev *rdev);
+
+extern struct regulator_ops mc13xxx_regulator_ops;
+extern struct regulator_ops mc13xxx_fixed_regulator_ops;
+
+#define MC13xxx_DEFINE(prefix, _name, _reg, _vsel_reg, _voltages, _ops) \
+ [prefix ## _name] = { \
+ .desc = { \
+ .name = #prefix "_" #_name, \
+ .n_voltages = ARRAY_SIZE(_voltages), \
+ .ops = &_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = prefix ## _name, \
+ .owner = THIS_MODULE, \
+ }, \
+ .reg = prefix ## _reg, \
+ .enable_bit = prefix ## _reg ## _ ## _name ## EN, \
+ .vsel_reg = prefix ## _vsel_reg, \
+ .vsel_shift = prefix ## _vsel_reg ## _ ## _name ## VSEL,\
+ .vsel_mask = prefix ## _vsel_reg ## _ ## _name ## VSEL_M,\
+ .voltages = _voltages, \
+ }
+
+#define MC13xxx_FIXED_DEFINE(prefix, _name, _reg, _voltages, _ops) \
+ [prefix ## _name] = { \
+ .desc = { \
+ .name = #prefix "_" #_name, \
+ .n_voltages = ARRAY_SIZE(_voltages), \
+ .ops = &_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = prefix ## _name, \
+ .owner = THIS_MODULE, \
+ }, \
+ .reg = prefix ## _reg, \
+ .enable_bit = prefix ## _reg ## _ ## _name ## EN, \
+ .voltages = _voltages, \
+ }
+
+#define MC13xxx_GPO_DEFINE(prefix, _name, _reg, _voltages, _ops) \
+ [prefix ## _name] = { \
+ .desc = { \
+ .name = #prefix "_" #_name, \
+ .n_voltages = ARRAY_SIZE(_voltages), \
+ .ops = &_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = prefix ## _name, \
+ .owner = THIS_MODULE, \
+ }, \
+ .reg = prefix ## _reg, \
+ .enable_bit = prefix ## _reg ## _ ## _name ## EN, \
+ .voltages = _voltages, \
+ }
+
+#define MC13xxx_DEFINE_SW(_name, _reg, _vsel_reg, _voltages, ops) \
+ MC13xxx_DEFINE(SW, _name, _reg, _vsel_reg, _voltages, ops)
+#define MC13xxx_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages, ops) \
+ MC13xxx_DEFINE(REGU, _name, _reg, _vsel_reg, _voltages, ops)
+
+#endif
projects / linux-beck.git / commitdiff