mirror of
https://github.com/torvalds/linux.git
synced 2024-11-23 12:42:02 +00:00
6998c575b6
Use the devm_platform_ioremap_resource() helper instead of calling platform_get_resource() and devm_ioremap_resource() separately Signed-off-by: Cai Huoqing <caihuoqing@baidu.com> Link: https://lore.kernel.org/r/20210908105752.2035-1-caihuoqing@baidu.com Signed-off-by: Mark Brown <broonie@kernel.org>
100 lines
2.6 KiB
C
100 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
//
|
|
// Copyright (c) 2019 Mantas Pucka <mantas@8devices.com>
|
|
// Copyright (c) 2019 Robert Marko <robert.marko@sartura.hr>
|
|
//
|
|
// Driver for IPQ4019 SD/MMC controller's I/O LDO voltage regulator
|
|
|
|
#include <linux/io.h>
|
|
#include <linux/module.h>
|
|
#include <linux/of.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/regmap.h>
|
|
#include <linux/regulator/driver.h>
|
|
#include <linux/regulator/machine.h>
|
|
#include <linux/regulator/of_regulator.h>
|
|
|
|
static const unsigned int ipq4019_vmmc_voltages[] = {
|
|
1500000, 1800000, 2500000, 3000000,
|
|
};
|
|
|
|
static const struct regulator_ops ipq4019_regulator_voltage_ops = {
|
|
.list_voltage = regulator_list_voltage_table,
|
|
.map_voltage = regulator_map_voltage_ascend,
|
|
.get_voltage_sel = regulator_get_voltage_sel_regmap,
|
|
.set_voltage_sel = regulator_set_voltage_sel_regmap,
|
|
};
|
|
|
|
static const struct regulator_desc vmmc_regulator = {
|
|
.name = "vmmcq",
|
|
.ops = &ipq4019_regulator_voltage_ops,
|
|
.type = REGULATOR_VOLTAGE,
|
|
.owner = THIS_MODULE,
|
|
.volt_table = ipq4019_vmmc_voltages,
|
|
.n_voltages = ARRAY_SIZE(ipq4019_vmmc_voltages),
|
|
.vsel_reg = 0,
|
|
.vsel_mask = 0x3,
|
|
};
|
|
|
|
static const struct regmap_config ipq4019_vmmcq_regmap_config = {
|
|
.reg_bits = 32,
|
|
.reg_stride = 4,
|
|
.val_bits = 32,
|
|
};
|
|
|
|
static int ipq4019_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct device *dev = &pdev->dev;
|
|
struct regulator_init_data *init_data;
|
|
struct regulator_config cfg = {};
|
|
struct regulator_dev *rdev;
|
|
struct regmap *rmap;
|
|
void __iomem *base;
|
|
|
|
init_data = of_get_regulator_init_data(dev, dev->of_node,
|
|
&vmmc_regulator);
|
|
if (!init_data)
|
|
return -EINVAL;
|
|
|
|
base = devm_platform_ioremap_resource(pdev, 0);
|
|
if (IS_ERR(base))
|
|
return PTR_ERR(base);
|
|
|
|
rmap = devm_regmap_init_mmio(dev, base, &ipq4019_vmmcq_regmap_config);
|
|
if (IS_ERR(rmap))
|
|
return PTR_ERR(rmap);
|
|
|
|
cfg.dev = dev;
|
|
cfg.init_data = init_data;
|
|
cfg.of_node = dev->of_node;
|
|
cfg.regmap = rmap;
|
|
|
|
rdev = devm_regulator_register(dev, &vmmc_regulator, &cfg);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(dev, "Failed to register regulator: %ld\n",
|
|
PTR_ERR(rdev));
|
|
return PTR_ERR(rdev);
|
|
}
|
|
platform_set_drvdata(pdev, rdev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct of_device_id regulator_ipq4019_of_match[] = {
|
|
{ .compatible = "qcom,vqmmc-ipq4019-regulator", },
|
|
{},
|
|
};
|
|
|
|
static struct platform_driver ipq4019_regulator_driver = {
|
|
.probe = ipq4019_regulator_probe,
|
|
.driver = {
|
|
.name = "vqmmc-ipq4019-regulator",
|
|
.of_match_table = of_match_ptr(regulator_ipq4019_of_match),
|
|
},
|
|
};
|
|
module_platform_driver(ipq4019_regulator_driver);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_AUTHOR("Mantas Pucka <mantas@8devices.com>");
|
|
MODULE_DESCRIPTION("IPQ4019 VQMMC voltage regulator");
|