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    Subject[PATCH 3/4] pinctrl: qcom: Add PM8941 and PM8941 pinctrl drivers
    Date
    From: "Ivan T. Ivanov" <iivanov@mm-sol.com>

    Add new pinctrl driver for GPIO and MPP subfunctions found in
    Qualcomm PMIC chips.

    Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
    ---
    drivers/pinctrl/Kconfig | 17 +++++++
    drivers/pinctrl/Makefile | 2 +
    drivers/pinctrl/pinctrl-pm8841.c | 84 +++++++++++++++++++++++++++++++++++
    drivers/pinctrl/pinctrl-pm8941.c | 96 ++++++++++++++++++++++++++++++++++++++++
    4 files changed, 199 insertions(+)
    create mode 100644 drivers/pinctrl/pinctrl-pm8841.c
    create mode 100644 drivers/pinctrl/pinctrl-pm8941.c

    diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
    index 297c84d..914f43c 100644
    --- a/drivers/pinctrl/Kconfig
    +++ b/drivers/pinctrl/Kconfig
    @@ -383,6 +383,23 @@ config PINCTRL_PALMAS
    open drain configuration for the Palmas series devices like
    TPS65913, TPS80036 etc.

    +config PINCTRL_PM8841
    + tristate "Qualcomm PM8841 pin controller driver"
    + depends on OF
    + select PINCTRL_QPNP
    + help
    + This is the pinctrl, pinmux, pinconf and gpiolib driver for the
    + Qualcomm MPP subfunction block found in the Qualcomm PM8841 PMIC chip.
    +
    +config PINCTRL_PM8941
    + tristate "Qualcomm PM8941 pin controller driver"
    + depends on OF
    + select PINCTRL_QPNP
    + help
    + This is the pinctrl, pinmux, pinconf and gpiolib driver for the
    + Qualcomm MPP and GPIO subfunction block found in the Qualcomm PM8941
    + PMIC chip.
    +
    config PINCTRL_QPNP
    bool
    select PINMUX
    diff --git a/drivers/pinctrl/Makefile b/drivers/pinctrl/Makefile
    index bfbdba1..3d1fe38 100644
    --- a/drivers/pinctrl/Makefile
    +++ b/drivers/pinctrl/Makefile
    @@ -47,6 +47,8 @@ obj-$(CONFIG_PINCTRL_STN8815) += pinctrl-nomadik-stn8815.o
    obj-$(CONFIG_PINCTRL_DB8500) += pinctrl-nomadik-db8500.o
    obj-$(CONFIG_PINCTRL_DB8540) += pinctrl-nomadik-db8540.o
    obj-$(CONFIG_PINCTRL_PALMAS) += pinctrl-palmas.o
    +obj-$(CONFIG_PINCTRL_PM8841) += pinctrl-pm8841.o
    +obj-$(CONFIG_PINCTRL_PM8941) += pinctrl-pm8941.o
    obj-$(CONFIG_PINCTRL_QPNP) += pinctrl-qpnp.o
    obj-$(CONFIG_PINCTRL_ROCKCHIP) += pinctrl-rockchip.o
    obj-$(CONFIG_PINCTRL_SINGLE) += pinctrl-single.o
    diff --git a/drivers/pinctrl/pinctrl-pm8841.c b/drivers/pinctrl/pinctrl-pm8841.c
    new file mode 100644
    index 0000000..0e46536
    --- /dev/null
    +++ b/drivers/pinctrl/pinctrl-pm8841.c
    @@ -0,0 +1,84 @@
    +/*
    + * Copyright (c) 2012-2014, 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/module.h>
    +#include <linux/of.h>
    +#include <linux/platform_device.h>
    +#include <linux/pinctrl/pinctrl.h>
    +#include <linux/platform_device.h>
    +
    +#include "pinctrl-qpnp.h"
    +
    +#define PM8841_MPP_CNT 4
    +
    +static int pm8841_pinctrl_probe(struct platform_device *qdev)
    +{
    + struct device *dev = &qdev->dev;
    + struct qpnp_pinctrl_info *data;
    + struct pinctrl_pin_desc *desc;
    + struct qpnp_padinfo *pads;
    + struct resource *res;
    + int idx, number;
    +
    + res = platform_get_resource(qdev, IORESOURCE_REG, 0);
    + if (!res)
    + return -ENXIO;
    +
    + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
    + if (!data)
    + return -ENOMEM;
    +
    + pads = devm_kzalloc(dev, sizeof(*pads) * PM8841_MPP_CNT, GFP_KERNEL);
    + if (!pads)
    + return -ENOMEM;
    +
    + desc = devm_kzalloc(dev, sizeof(*desc) * PM8841_MPP_CNT, GFP_KERNEL);
    + if (!desc)
    + return -ENOMEM;
    +
    + data->npads = PM8841_MPP_CNT;
    + data->pads = pads;
    + data->desc = desc;
    + number = 0;
    +
    + for (idx = 0; idx < PM8841_MPP_CNT; idx++, pads++, desc++) {
    + snprintf(pads->name, ARRAY_SIZE(pads->name), "mpp%d", idx + 1);
    + pads->base = res->start + (idx * 0x100);
    + desc->number = number++;
    + desc->name = pads->name;
    + }
    +
    + return qpnp_pinctrl_probe(qdev, data);
    +}
    +
    +static const struct of_device_id pm8841_pinctrl_of_match[] = {
    + { .compatible = "qcom,pm8841-pinctrl", },
    + { },
    +};
    +MODULE_DEVICE_TABLE(of, pm8841_pinctrl_of_match);
    +
    +static struct platform_driver pm8841_pinctrl_driver = {
    + .driver = {
    + .name = "pm8841-pinctrl",
    + .owner = THIS_MODULE,
    + .of_match_table = pm8841_pinctrl_of_match,
    + },
    + .probe = pm8841_pinctrl_probe,
    + .remove = qpnp_pinctrl_remove,
    +};
    +module_platform_driver(pm8841_pinctrl_driver);
    +
    +MODULE_AUTHOR("Ivan T. Ivanov <iivanov@mm-sol.com>");
    +MODULE_DESCRIPTION("Qualcomm PM8841 pin control driver");
    +MODULE_ALIAS("platform:pm8841-pinctrl");
    +MODULE_LICENSE("GPL v2");
    diff --git a/drivers/pinctrl/pinctrl-pm8941.c b/drivers/pinctrl/pinctrl-pm8941.c
    new file mode 100644
    index 0000000..c3817e8
    --- /dev/null
    +++ b/drivers/pinctrl/pinctrl-pm8941.c
    @@ -0,0 +1,96 @@
    +/*
    + * Copyright (c) 2012-2014, 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/module.h>
    +#include <linux/of.h>
    +#include <linux/pinctrl/pinctrl.h>
    +#include <linux/platform_device.h>
    +
    +#include "pinctrl-qpnp.h"
    +
    +#define PM8941_MPP_CNT 8
    +#define PM8941_GPIO_CNT 36
    +#define PM8941_PAD_CNT (PM8941_MPP_CNT + PM8941_GPIO_CNT)
    +
    +static int pm8941_pinctrl_probe(struct platform_device *pdev)
    +{
    + struct device *dev = &pdev->dev;
    + struct qpnp_pinctrl_info *data;
    + struct pinctrl_pin_desc *desc;
    + struct qpnp_padinfo *pads;
    + struct resource *gpios, *mpps;
    + int idx, number;
    +
    + mpps = platform_get_resource(pdev, IORESOURCE_REG, 0);
    + if (!mpps)
    + return -ENXIO;
    +
    + gpios = platform_get_resource(pdev, IORESOURCE_REG, 1);
    + if (!gpios)
    + return -ENXIO;
    +
    + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
    + if (!data)
    + return -ENOMEM;
    +
    + pads = devm_kzalloc(dev, sizeof(*pads) * PM8941_PAD_CNT, GFP_KERNEL);
    + if (!pads)
    + return -ENOMEM;
    +
    + desc = devm_kzalloc(dev, sizeof(*desc) * PM8941_PAD_CNT, GFP_KERNEL);
    + if (!desc)
    + return -ENOMEM;
    +
    + data->npads = PM8941_PAD_CNT;
    + data->pads = pads;
    + data->desc = desc;
    + number = 0;
    +
    + for (idx = 0; idx < PM8941_MPP_CNT; idx++, pads++, desc++) {
    + snprintf(pads->name, ARRAY_SIZE(pads->name), "mpp%d", idx + 1);
    + pads->base = mpps->start + (idx * 0x100);
    + desc->number = number++;
    + desc->name = pads->name;
    + }
    +
    + for (idx = 0; idx < PM8941_GPIO_CNT; idx++, pads++, desc++) {
    + snprintf(pads->name, ARRAY_SIZE(pads->name), "gpio%d", idx + 1);
    + pads->base = gpios->start + (idx * 0x100);
    + desc->number = number++;
    + desc->name = pads->name;
    + }
    +
    + return qpnp_pinctrl_probe(pdev, data);
    +}
    +
    +static const struct of_device_id pm8941_pinctrl_of_match[] = {
    + { .compatible = "qcom,pm8941-pinctrl", },
    + { },
    +};
    +MODULE_DEVICE_TABLE(of, pm8941_pinctrl_of_match);
    +
    +static struct platform_driver pm8941_pinctrl_driver = {
    + .driver = {
    + .name = "pm8941-pinctrl",
    + .owner = THIS_MODULE,
    + .of_match_table = pm8941_pinctrl_of_match,
    + },
    + .probe = pm8941_pinctrl_probe,
    + .remove = qpnp_pinctrl_remove,
    +};
    +module_platform_driver(pm8941_pinctrl_driver);
    +
    +MODULE_AUTHOR("Ivan T. Ivanov <iivanov@mm-sol.com>");
    +MODULE_DESCRIPTION("Qualcomm PM8841 pin control driver");
    +MODULE_ALIAS("platform:pm8941-pinctrl");
    +MODULE_LICENSE("GPL v2");
    --
    1.8.3.2


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