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    Subject[PATCH v3 1/4] mfd: pm8xxx-spmi: add support for Qualcomm SPMI PMICs
    Date
    From: Josh Cartwright <joshc@codeaurora.org>

    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>
    Acked-by: Lee Jones <lee.jones@linaro.org>
    ---
    drivers/mfd/Kconfig | 16 +++++++++++
    drivers/mfd/Makefile | 1 +
    drivers/mfd/pm8xxx-spmi.c | 65 +++++++++++++++++++++++++++++++++++++++++++++
    3 files changed, 82 insertions(+), 0 deletions(-)
    create mode 100644 drivers/mfd/pm8xxx-spmi.c

    diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
    index 6cc4b6a..122e2d9 100644
    --- a/drivers/mfd/Kconfig
    +++ b/drivers/mfd/Kconfig
    @@ -524,6 +524,22 @@ 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_PM8XXX_SPMI
    + tristate "Qualcomm PM8XXX SPMI PMICs"
    + depends on ARCH_QCOM || COMPILE_TEST
    + depends on OF
    + depends on SPMI
    + select MFD_PM8XXX
    + select REGMAP_SPMI
    + help
    + This enables support for the Qualcomm PM8XXX 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 PM8XXX SPMI PMIC
    + series as a module. The module will be called "pm8xxx-spmi".
    +
    config MFD_RDC321X
    tristate "RDC R-321x southbridge"
    select MFD_CORE
    diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
    index 8afedba..93d82cc 100644
    --- a/drivers/mfd/Makefile
    +++ b/drivers/mfd/Makefile
    @@ -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-$(CONFIG_MFD_PM8XXX_SPMI) += pm8xxx-spmi.o
    obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
    obj-$(CONFIG_MFD_TPS65090) += tps65090.o
    obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o
    diff --git a/drivers/mfd/pm8xxx-spmi.c b/drivers/mfd/pm8xxx-spmi.c
    new file mode 100644
    index 0000000..16335a1
    --- /dev/null
    +++ b/drivers/mfd/pm8xxx-spmi.c
    @@ -0,0 +1,65 @@
    +/*
    + * 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 pm8xxx_regmap_config = {
    + .reg_bits = 16,
    + .val_bits = 8,
    + .max_register = 0xffff,
    +};
    +
    +static int pm8xxx_probe(struct spmi_device *sdev)
    +{
    + struct device_node *root = sdev->dev.of_node;
    + struct regmap *regmap;
    +
    + regmap = devm_regmap_init_spmi_ext(sdev, &pm8xxx_regmap_config);
    + if (IS_ERR(regmap))
    + return PTR_ERR(regmap);
    +
    + return of_platform_populate(root, NULL, NULL, &sdev->dev);
    +}
    +
    +static void pm8xxx_remove(struct spmi_device *sdev)
    +{
    + of_platform_depopulate(&sdev->dev);
    +}
    +
    +static const struct of_device_id pm8xxx_id_table[] = {
    + { .compatible = "qcom,pm8941" },
    + { .compatible = "qcom,pm8841" },
    + { .compatible = "qcom,pma8084" },
    + { }
    +};
    +MODULE_DEVICE_TABLE(of, pm8xxx_id_table);
    +
    +static struct spmi_driver pm8xxx_driver = {
    + .probe = pm8xxx_probe,
    + .remove = pm8xxx_remove,
    + .driver = {
    + .name = "pm8xxx-spmi",
    + .of_match_table = pm8xxx_id_table,
    + },
    +};
    +module_spmi_driver(pm8xxx_driver);
    +
    +MODULE_DESCRIPTION("PM8XXX SPMI PMIC driver");
    +MODULE_ALIAS("spmi:pm8xxx-spmi");
    +MODULE_LICENSE("GPL v2");
    +MODULE_AUTHOR("Josh Cartwright <joshc@codeaurora.org>");
    +MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");
    --
    1.7.0.4


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