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Date: Wed, 1 Dec 2010 15:15:55 +0800
From: Yong Shen <yong.shen@...aro.org>
To: Linaro Dev <linaro-dev@...ts.linaro.org>,
List Linux Arm Kernel <linux-arm-kernel@...ts.infradead.org>
Cc: Mark Brown <broonie@...nsource.wolfsonmicro.com>,
Sascha Hauer <s.hauer@...gutronix.de>,
Uwe Kleine-König
<u.kleine-koenig@...gutronix.de>, lrg@...mlogic.co.uk,
linux-kernel@...r.kernel.org
Subject: [PATCHv2] make mc13783 regulator code generic
Hi there,
This is the v2 with some changes according to comments from v1. There
will be few patches coming out after this one, for mc13892 regulator
to share some code with mc13783.
Still, cause the firewall problem, I send out patch this way. Please
give comments inline and use attached patch for testing.
Yong
>From b3451070f4665c90f11e600a8722f86b68437ded Mon Sep 17 00:00:00 2001
From: Yong Shen <yong.shen@...aro.org>
Date: Tue, 30 Nov 2010 14:11:34 +0800
Subject: [PATCH] make mc13783 regulator code generic
move some common functions and micros of mc13783 regulaor driver to
a seperate file, which makes it possible for mc13892 to share code.
Signed-off-by: Yong Shen <yong.shen@...aro.org>
---
drivers/regulator/Kconfig | 4 +
drivers/regulator/Makefile | 1 +
drivers/regulator/mc13783-regulator.c | 325 ++++------------------------
drivers/regulator/mc13xxx-regulator-core.c | 239 ++++++++++++++++++++
include/linux/mfd/mc13783.h | 67 +++---
include/linux/regulator/mc13xxx.h | 101 +++++++++
6 files changed, 425 insertions(+), 312 deletions(-)
create mode 100644 drivers/regulator/mc13xxx-regulator-core.c
create mode 100644 include/linux/regulator/mc13xxx.h
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index dd30e88..63c2bdd 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -186,9 +186,13 @@ config REGULATOR_PCAP
This driver provides support for the voltage regulators of the
PCAP2 PMIC.
+config REGULATOR_MC13XXX_CORE
+ tristate "Support regulators on Freescale MC13xxx PMIC"
+
config REGULATOR_MC13783
tristate "Support regulators on Freescale MC13783 PMIC"
depends on MFD_MC13783
+ select REGULATOR_MC13XXX_CORE
help
Say y here to support the regulators found on the Freescale MC13783
PMIC.
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index bff8157..11876be 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -30,6 +30,7 @@ obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
+obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o
obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
diff --git a/drivers/regulator/mc13783-regulator.c
b/drivers/regulator/mc13783-regulator.c
index 4597d50..0681960 100644
--- a/drivers/regulator/mc13783-regulator.c
+++ b/drivers/regulator/mc13783-regulator.c
@@ -1,6 +1,7 @@
/*
* Regulator Driver for Freescale MC13783 PMIC
*
+ * Copyright 2010 Yong Shen <yong.shen@...aro.org>
* Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@...gutronix.de>
* Copyright 2009 Alberto Panizzo <maramaopercheseimorto@...il.com>
*
@@ -10,6 +11,7 @@
*/
#include <linux/mfd/mc13783.h>
+#include <linux/regulator/mc13xxx.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/driver.h>
#include <linux/platform_device.h>
@@ -89,16 +91,6 @@
#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 const mc13783_sw3_val[] = {
5000000, 5000000, 5000000, 5500000,
@@ -175,64 +167,26 @@ static const int const mc13783_pwgtdrv_val[] = {
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(SW, _name, _reg, _vsel_reg, _voltages)
#define MC13783_DEFINE_REGU(_name, _reg, _vsel_reg, _voltages) \
MC13783_DEFINE(REGU, _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(REGU, VAUDIO, REGULATORMODE0, mc13783_vaudio_val),
@@ -274,207 +228,16 @@ static struct mc13783_regulator mc13783_regulators[] = {
MC13783_GPO_DEFINE(REGU, 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)
-{
- 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;
-
- 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)
-{
- 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 >= 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,
-};
-
-int mc13783_powermisc_rmw(struct mc13783_regulator_priv *priv, u32 mask,
+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;
@@ -489,34 +252,36 @@ int mc13783_powermisc_rmw(struct
mc13783_regulator_priv *priv, u32 mask,
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);
/* Power Gate enable value is 0 */
- if (id == MC13783_REGU_PWGT1SPI ||
- id == MC13783_REGU_PWGT2SPI)
+ if (id == MC13783_REG_PWGT1SPI ||
+ 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;
@@ -524,27 +289,28 @@ static int mc13783_gpo_regulator_disable(struct
regulator_dev *rdev)
dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
/* Power Gate disable value is 1 */
- if (id == MC13783_REGU_PWGT1SPI ||
- id == MC13783_REGU_PWGT2SPI)
- dis_val = mc13783_regulators[id].enable_bit;
+ if (id == MC13783_REG_PWGT1SPI ||
+ id == MC13783_REG_PWGT2SPI)
+ 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;
@@ -554,22 +320,22 @@ static int
mc13783_gpo_regulator_is_enabled(struct regulator_dev *rdev)
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;
@@ -583,7 +349,8 @@ static int __devinit
mc13783_regulator_probe(struct platform_device *pdev)
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];
@@ -613,7 +380,7 @@ err:
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;
diff --git a/drivers/regulator/mc13xxx-regulator-core.c
b/drivers/regulator/mc13xxx-regulator-core.c
new file mode 100644
index 0000000..e7e0def
--- /dev/null
+++ b/drivers/regulator/mc13xxx-regulator-core.c
@@ -0,0 +1,239 @@
+/*
+ * Regulator Driver for Freescale MC13xxx PMIC
+ *
+ * Copyright 2010 Yong Shen <yong.shen@...aro.org>
+ *
+ * Based on mc13783 regulator driver :
+ * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@...gutronix.de>
+ * Copyright 2009 Alberto Panizzo <maramaopercheseimorto@...il.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/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>
+
+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)
+{
+ 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)
+{
+ 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(struct regulator_dev *rdev)
+{
+ return 0;
+}
+
+int mc13xxx_sw_regulator_is_enabled(struct regulator_dev *rdev)
+{
+ return 1;
+}
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Yong Shen <yong.shen@...aro.org>");
+MODULE_DESCRIPTION("Regulator Driver for Freescale MC13xxx PMIC");
+MODULE_ALIAS("platform:mc13xxx-regulator-core");
diff --git a/include/linux/mfd/mc13783.h b/include/linux/mfd/mc13783.h
index b4c741e..7d0f3d6 100644
--- a/include/linux/mfd/mc13783.h
+++ b/include/linux/mfd/mc13783.h
@@ -1,4 +1,5 @@
/*
+ * Copyright 2010 Yong Shen <yong.shen@...aro.org>
* Copyright 2009-2010 Pengutronix
* Uwe Kleine-Koenig <u.kleine-koenig@...gutronix.de>
*
@@ -122,39 +123,39 @@ int mc13783_adc_do_conversion(struct mc13783
*mc13783, unsigned int mode,
unsigned int channel, unsigned int *sample);
-#define MC13783_SW_SW1A 0
-#define MC13783_SW_SW1B 1
-#define MC13783_SW_SW2A 2
-#define MC13783_SW_SW2B 3
-#define MC13783_SW_SW3 4
-#define MC13783_SW_PLL 5
-#define MC13783_REGU_VAUDIO 6
-#define MC13783_REGU_VIOHI 7
-#define MC13783_REGU_VIOLO 8
-#define MC13783_REGU_VDIG 9
-#define MC13783_REGU_VGEN 10
-#define MC13783_REGU_VRFDIG 11
-#define MC13783_REGU_VRFREF 12
-#define MC13783_REGU_VRFCP 13
-#define MC13783_REGU_VSIM 14
-#define MC13783_REGU_VESIM 15
-#define MC13783_REGU_VCAM 16
-#define MC13783_REGU_VRFBG 17
-#define MC13783_REGU_VVIB 18
-#define MC13783_REGU_VRF1 19
-#define MC13783_REGU_VRF2 20
-#define MC13783_REGU_VMMC1 21
-#define MC13783_REGU_VMMC2 22
-#define MC13783_REGU_GPO1 23
-#define MC13783_REGU_GPO2 24
-#define MC13783_REGU_GPO3 25
-#define MC13783_REGU_GPO4 26
-#define MC13783_REGU_V1 27
-#define MC13783_REGU_V2 28
-#define MC13783_REGU_V3 29
-#define MC13783_REGU_V4 30
-#define MC13783_REGU_PWGT1SPI 31
-#define MC13783_REGU_PWGT2SPI 32
+#define MC13783_REG_SW1A 0
+#define MC13783_REG_SW1B 1
+#define MC13783_REG_SW2A 2
+#define MC13783_REG_SW2B 3
+#define MC13783_REG_SW3 4
+#define MC13783_REG_PLL 5
+#define MC13783_REG_VAUDIO 6
+#define MC13783_REG_VIOHI 7
+#define MC13783_REG_VIOLO 8
+#define MC13783_REG_VDIG 9
+#define MC13783_REG_VGEN 10
+#define MC13783_REG_VRFDIG 11
+#define MC13783_REG_VRFREF 12
+#define MC13783_REG_VRFCP 13
+#define MC13783_REG_VSIM 14
+#define MC13783_REG_VESIM 15
+#define MC13783_REG_VCAM 16
+#define MC13783_REG_VRFBG 17
+#define MC13783_REG_VVIB 18
+#define MC13783_REG_VRF1 19
+#define MC13783_REG_VRF2 20
+#define MC13783_REG_VMMC1 21
+#define MC13783_REG_VMMC2 22
+#define MC13783_REG_GPO1 23
+#define MC13783_REG_GPO2 24
+#define MC13783_REG_GPO3 25
+#define MC13783_REG_GPO4 26
+#define MC13783_REG_V1 27
+#define MC13783_REG_V2 28
+#define MC13783_REG_V3 29
+#define MC13783_REG_V4 30
+#define MC13783_REG_PWGT1SPI 31
+#define MC13783_REG_PWGT2SPI 32
#define MC13783_IRQ_ADCDONE MC13XXX_IRQ_ADCDONE
#define MC13783_IRQ_ADCBISDONE MC13XXX_IRQ_ADCBISDONE
diff --git a/include/linux/regulator/mc13xxx.h
b/include/linux/regulator/mc13xxx.h
new file mode 100644
index 0000000..a60c9be
--- /dev/null
+++ b/include/linux/regulator/mc13xxx.h
@@ -0,0 +1,101 @@
+/*
+ * mc13xxx.h - regulators for the Freescale mc13xxx PMIC
+ *
+ * Copyright (C) 2010 Yong Shen <yong.shen@...aro.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);
+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
--
1.7.0.4
Cheers
Yong
View attachment "0001-make-mc13783-regulator-code-generic.patch" of type "text/x-patch" (30759 bytes)
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