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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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67
drivers/mfd/qcom-spmi-pmic.c Normal file
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/*
* 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>");