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mfd: Add support for Qualcomm SPMI PMICs

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The Qualcomm SPMI PMIC chips are components used with the
Snapdragon 800 series SoC family.  This driver exists
largely as a glue mfd component, it exists to be an owner
of an SPMI regmap for children devices described in
device tree.

Signed-off-by: Josh Cartwright <joshc@codeaurora.org>
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Josh Cartwright 2014-08-01 17:30:48 +03:00 committed by Lee Jones
parent a5669e4872
commit c3a973a770
3 changed files with 83 additions and 0 deletions
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15
drivers/mfd/Kconfig
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@ -567,6 +567,21 @@ config MFD_PM8921_CORE
Say M here if you want to include support for PM8921 chip as a module.
This will build a module called "pm8921-core".
config MFD_SPMI_PMIC
tristate "Qualcomm SPMI PMICs"
depends on ARCH_QCOM || COMPILE_TEST
depends on OF
depends on SPMI
select REGMAP_SPMI
help
This enables support for the Qualcomm SPMI PMICs.
These PMICs are currently used with the Snapdragon 800 series of
SoCs. Note, that this will only be useful paired with descriptions
of the independent functions as children nodes in the device tree.
Say M here if you want to include support for the SPMI PMIC
series as a module. The module will be called "qcom-spmi-pmic".
config MFD_RDC321X
tristate "RDC R-321x southbridge"
select MFD_CORE

1
drivers/mfd/Makefile
View file

@ -153,6 +153,7 @@ obj-$(CONFIG_MFD_SI476X_CORE) += si476x-core.o
obj-$(CONFIG_MFD_CS5535) += cs5535-mfd.o
obj-$(CONFIG_MFD_OMAP_USB_HOST) += omap-usb-host.o omap-usb-tll.o
obj-$(CONFIG_MFD_PM8921_CORE) += pm8921-core.o ssbi.o
obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o
obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
obj-$(CONFIG_MFD_TPS65090) += tps65090.o
obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o

67
drivers/mfd/qcom-spmi-pmic.c Normal file
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@ -0,0 +1,67 @@
/*
* Copyright (c) 2014, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* 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/kernel.h>
#include <linux/module.h>
#include <linux/spmi.h>
#include <linux/regmap.h>
#include <linux/of_platform.h>
static const struct regmap_config spmi_regmap_config = {
.reg_bits = 16,
.val_bits = 8,
.max_register = 0xffff,
.fast_io = true,
};
static int pmic_spmi_probe(struct spmi_device *sdev)
{
struct device_node *root = sdev->dev.of_node;
struct regmap *regmap;
regmap = devm_regmap_init_spmi_ext(sdev, &spmi_regmap_config);
if (IS_ERR(regmap))
return PTR_ERR(regmap);
return of_platform_populate(root, NULL, NULL, &sdev->dev);
}
static void pmic_spmi_remove(struct spmi_device *sdev)
{
of_platform_depopulate(&sdev->dev);
}
static const struct of_device_id pmic_spmi_id_table[] = {
{ .compatible = "qcom,spmi-pmic" },
{ .compatible = "qcom,pm8941" },
{ .compatible = "qcom,pm8841" },
{ .compatible = "qcom,pma8084" },
{ }
};
MODULE_DEVICE_TABLE(of, pmic_spmi_id_table);
static struct spmi_driver pmic_spmi_driver = {
.probe = pmic_spmi_probe,
.remove = pmic_spmi_remove,
.driver = {
.name = "pmic-spmi",
.of_match_table = pmic_spmi_id_table,
},
};
module_spmi_driver(pmic_spmi_driver);
MODULE_DESCRIPTION("Qualcomm SPMI PMIC driver");
MODULE_ALIAS("spmi:spmi-pmic");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Josh Cartwright <joshc@codeaurora.org>");
MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");