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Message-Id: <1250089531-10399-6-git-send-email-s.hauer@pengutronix.de>
Date: Wed, 12 Aug 2009 17:05:31 +0200
From: Sascha Hauer <s.hauer@...gutronix.de>
To: linux-kernel@...r.kernel.org
Cc: linux-arm-kernel@...ts.arm.linux.org.uk,
Sascha Hauer <s.hauer@...gutronix.de>,
Mark Brown <broonie@...nsource.wolfsonmicro.com>,
Liam Girdwood <lrg@...mlogic.co.uk>
Subject: [PATCH 5/5] [regulator] Add a Freescale MC13783 regulator driver
This driver provides basic support for the voltage regulators
integrated into the Freescale MC13783 PMIC. It is currently
only possible to enable/disable outputs, not to actually
set the voltage.
changes since v1:
- decrease verbosity
- use subsys_initcall instead of module_init
- use platform_driver_probe instead of platform_driver_register
- add __devexit_p to mc13783_regulator_remove
Signed-off-by: Sascha Hauer <s.hauer@...gutronix.de>
Cc: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc: Liam Girdwood <lrg@...mlogic.co.uk>
---
drivers/regulator/Kconfig | 8 +
drivers/regulator/Makefile | 1 +
drivers/regulator/mc13783.c | 410 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 419 insertions(+), 0 deletions(-)
create mode 100644 drivers/regulator/mc13783.c
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index f431779..69197e9 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -117,4 +117,12 @@ config REGULATOR_LP3971
Say Y here to support the voltage regulators and convertors
on National Semiconductors LP3971 PMIC
+config REGULATOR_MC13783
+ tristate "Support regulators on Freescale MC13783 PMIC"
+ depends on MFD_MC13783
+ help
+ Say y here to support the regulators found on the Freescale MC13783
+ PMIC.
+
endif
+
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 4d762c4..6d45846 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -16,5 +16,6 @@ obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o
obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o
obj-$(CONFIG_REGULATOR_DA903X) += da903x.o
obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o
+obj-$(CONFIG_REGULATOR_MC13783) += mc13783.o
ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
diff --git a/drivers/regulator/mc13783.c b/drivers/regulator/mc13783.c
new file mode 100644
index 0000000..710211f
--- /dev/null
+++ b/drivers/regulator/mc13783.c
@@ -0,0 +1,410 @@
+/*
+ * Regulator Driver for Freescale MC13783 PMIC
+ *
+ * Copyright (C) 2008 Sascha Hauer, Pengutronix <s.hauer@...gutronix.de>
+ *
+ * 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.
+ */
+
+#include <linux/mfd/mc13783-private.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/driver.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/mc13783.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/err.h>
+
+struct mc13783_regulator {
+ struct regulator_desc desc;
+ int reg;
+ int enable_bit;
+};
+
+static struct regulator_ops mc13783_regulator_ops;
+
+static struct mc13783_regulator mc13783_regulators[] = {
+ [MC13783_SW_SW3] = {
+ .desc = {
+ .name = "SW_SW3",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_SW_SW3,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_SWITCHERS_5,
+ .enable_bit = MC13783_SWCTRL_SW3_EN,
+ },
+ [MC13783_SW_PLL] = {
+ .desc = {
+ .name = "SW_PLL",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_SW_PLL,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_SWITCHERS_4,
+ .enable_bit = MC13783_SWCTRL_PLL_EN,
+ },
+ [MC13783_REGU_VAUDIO] = {
+ .desc = {
+ .name = "REGU_VAUDIO",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VAUDIO,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VAUDIO_EN,
+ },
+ [MC13783_REGU_VIOHI] = {
+ .desc = {
+ .name = "REGU_VIOHI",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VIOHI,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VIOHI_EN,
+ },
+ [MC13783_REGU_VIOLO] = {
+ .desc = {
+ .name = "REGU_VIOLO",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VIOLO,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VIOLO_EN,
+ },
+ [MC13783_REGU_VDIG] = {
+ .desc = {
+ .name = "REGU_VDIG",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VDIG,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VDIG_EN,
+ },
+ [MC13783_REGU_VGEN] = {
+ .desc = {
+ .name = "REGU_VGEN",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VGEN,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VGEN_EN,
+ },
+ [MC13783_REGU_VRFDIG] = {
+ .desc = {
+ .name = "REGU_VRFDIG",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRFDIG,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VRFDIG_EN,
+ },
+ [MC13783_REGU_VRFREF] = {
+ .desc = {
+ .name = "REGU_VRFREF",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRFREF,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VRFREF_EN,
+ },
+ [MC13783_REGU_VRFCP] = {
+ .desc = {
+ .name = "REGU_VRFCP",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRFCP,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_0,
+ .enable_bit = MC13783_REGCTRL_VRFCP_EN,
+ },
+ [MC13783_REGU_VSIM] = {
+ .desc = {
+ .name = "REGU_VSIM",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VSIM,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VSIM_EN,
+ },
+ [MC13783_REGU_VESIM] = {
+ .desc = {
+ .name = "REGU_VESIM",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VESIM,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VESIM_EN,
+ },
+ [MC13783_REGU_VCAM] = {
+ .desc = {
+ .name = "REGU_VCAM",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VCAM,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VCAM_EN,
+ },
+ [MC13783_REGU_VRFBG] = {
+ .desc = {
+ .name = "REGU_VRFBG",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRFBG,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VRFBG_EN,
+ },
+ [MC13783_REGU_VVIB] = {
+ .desc = {
+ .name = "REGU_VVIB",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VVIB,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VVIB_EN,
+ },
+ [MC13783_REGU_VRF1] = {
+ .desc = {
+ .name = "REGU_VRF1",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRF1,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VRF1_EN,
+ },
+ [MC13783_REGU_VRF2] = {
+ .desc = {
+ .name = "REGU_VRF2",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VRF2,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VRF2_EN,
+ },
+ [MC13783_REGU_VMMC1] = {
+ .desc = {
+ .name = "REGU_VMMC1",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VMMC1,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VMMC1_EN,
+ },
+ [MC13783_REGU_VMMC2] = {
+ .desc = {
+ .name = "REGU_VMMC2",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_VMMC2,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_REGULATOR_MODE_1,
+ .enable_bit = MC13783_REGCTRL_VMMC2_EN,
+ },
+ [MC13783_REGU_GPO1] = {
+ .desc = {
+ .name = "REGU_GPO1",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_GPO1,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_POWER_MISCELLANEOUS,
+ .enable_bit = MC13783_REGCTRL_GPO1_EN,
+ },
+ [MC13783_REGU_GPO2] = {
+ .desc = {
+ .name = "REGU_GPO2",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_GPO2,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_POWER_MISCELLANEOUS,
+ .enable_bit = MC13783_REGCTRL_GPO2_EN,
+ },
+ [MC13783_REGU_GPO3] = {
+ .desc = {
+ .name = "REGU_GPO3",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_GPO3,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_POWER_MISCELLANEOUS,
+ .enable_bit = MC13783_REGCTRL_GPO3_EN,
+ },
+ [MC13783_REGU_GPO4] = {
+ .desc = {
+ .name = "REGU_GPO4",
+ .ops = &mc13783_regulator_ops,
+ .type = REGULATOR_VOLTAGE,
+ .id = MC13783_REGU_GPO4,
+ .owner = THIS_MODULE,
+ },
+ .reg = MC13783_REG_POWER_MISCELLANEOUS,
+ .enable_bit = MC13783_REGCTRL_GPO4_EN,
+ },
+};
+
+struct mc13783_priv {
+ struct regulator_desc desc[ARRAY_SIZE(mc13783_regulators)];
+ struct mc13783 *mc13783;
+ struct regulator_dev *regulators[0];
+};
+
+static int mc13783_enable(struct regulator_dev *rdev)
+{
+ struct mc13783_priv *priv = rdev_get_drvdata(rdev);
+ int id = rdev_get_id(rdev);
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+ return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,
+ mc13783_regulators[id].enable_bit,
+ mc13783_regulators[id].enable_bit);
+}
+
+static int mc13783_disable(struct regulator_dev *rdev)
+{
+ struct mc13783_priv *priv = rdev_get_drvdata(rdev);
+ int id = rdev_get_id(rdev);
+
+ dev_dbg(rdev_get_dev(rdev), "%s id: %d\n", __func__, id);
+
+ return mc13783_set_bits(priv->mc13783, mc13783_regulators[id].reg,
+ mc13783_regulators[id].enable_bit, 0);
+}
+
+static int mc13783_is_enabled(struct regulator_dev *rdev)
+{
+ struct mc13783_priv *priv = rdev_get_drvdata(rdev);
+ int ret, id = rdev_get_id(rdev);
+ unsigned int val;
+
+ ret = mc13783_reg_read(priv->mc13783, mc13783_regulators[id].reg, &val);
+ if (ret)
+ return ret;
+
+ return (val & mc13783_regulators[id].enable_bit) != 0;
+}
+
+static struct regulator_ops mc13783_regulator_ops = {
+ .enable = mc13783_enable,
+ .disable = mc13783_disable,
+ .is_enabled = mc13783_is_enabled,
+};
+
+static int __devinit mc13783_regulator_probe(struct platform_device *pdev)
+{
+ struct mc13783_priv *priv;
+ struct mc13783 *mc13783 = dev_get_drvdata(pdev->dev.parent);
+ struct mc13783_regulator_init_data *init_data;
+ int i, ret;
+
+ dev_dbg(&pdev->dev, "mc13783_regulator_probe id %d\n", pdev->id);
+
+ priv = kzalloc(sizeof(*priv) + mc13783->num_regulators * sizeof(void *),
+ GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ priv->mc13783 = mc13783;
+
+ for (i = 0; i < mc13783->num_regulators; i++) {
+ init_data = &mc13783->regulators[i];
+ priv->regulators[i] = regulator_register(
+ &mc13783_regulators[init_data->id].desc,
+ &pdev->dev, init_data->init_data, priv);
+
+ if (IS_ERR(priv->regulators[i])) {
+ dev_err(&pdev->dev, "failed to register regulator %s\n",
+ mc13783_regulators[i].desc.name);
+ ret = PTR_ERR(priv->regulators[i]);
+ goto err;
+ }
+ }
+
+ platform_set_drvdata(pdev, priv);
+
+ return 0;
+err:
+ while (--i >= 0)
+ regulator_unregister(priv->regulators[i]);
+
+ kfree(priv);
+
+ return ret;
+}
+
+static int __devexit mc13783_regulator_remove(struct platform_device *pdev)
+{
+ struct mc13783_priv *priv = platform_get_drvdata(pdev);
+ struct mc13783 *mc13783 = priv->mc13783;
+ int i;
+
+ for (i = 0; i < mc13783->num_regulators; i++)
+ regulator_unregister(priv->regulators[i]);
+
+ return 0;
+}
+
+static struct platform_driver mc13783_regulator_driver = {
+ .driver = {
+ .name = "mc13783-regulator",
+ .owner = THIS_MODULE,
+ },
+ .remove = __devexit_p(mc13783_regulator_remove),
+};
+
+static int __init mc13783_regulator_init(void)
+{
+ return platform_driver_probe(&mc13783_regulator_driver,
+ mc13783_regulator_probe);
+}
+subsys_initcall(mc13783_regulator_init);
+
+static void __exit mc13783_regulator_exit(void)
+{
+ platform_driver_unregister(&mc13783_regulator_driver);
+}
+module_exit(mc13783_regulator_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Sascha Hauer <s.hauer@...gutronix.de");
+MODULE_DESCRIPTION("Regulator Driver for Freescale MC13783 PMIC");
+MODULE_ALIAS("platform:mc13783-regulator");
--
1.6.3.3
--
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