4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 and
6 * only version 2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 #include <linux/device.h>
15 #include <linux/module.h>
16 #include <linux/nvmem-provider.h>
17 #include <linux/platform_device.h>
18 #include <linux/regmap.h>
20 static struct regmap_config qfprom_regmap_config = {
24 .val_format_endian = REGMAP_ENDIAN_LITTLE,
27 static struct nvmem_config econfig = {
32 static int qfprom_remove(struct platform_device *pdev)
34 struct nvmem_device *nvmem = platform_get_drvdata(pdev);
36 return nvmem_unregister(nvmem);
39 static int qfprom_probe(struct platform_device *pdev)
41 struct device *dev = &pdev->dev;
43 struct nvmem_device *nvmem;
44 struct regmap *regmap;
47 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
48 base = devm_ioremap_resource(dev, res);
52 qfprom_regmap_config.max_register = resource_size(res) - 1;
54 regmap = devm_regmap_init_mmio(dev, base, &qfprom_regmap_config);
56 dev_err(dev, "regmap init failed\n");
57 return PTR_ERR(regmap);
60 nvmem = nvmem_register(&econfig);
62 return PTR_ERR(nvmem);
64 platform_set_drvdata(pdev, nvmem);
69 static const struct of_device_id qfprom_of_match[] = {
70 { .compatible = "qcom,qfprom",},
73 MODULE_DEVICE_TABLE(of, qfprom_of_match);
75 static struct platform_driver qfprom_driver = {
76 .probe = qfprom_probe,
77 .remove = qfprom_remove,
79 .name = "qcom,qfprom",
80 .of_match_table = qfprom_of_match,
83 module_platform_driver(qfprom_driver);
85 MODULE_DESCRIPTION("Qualcomm QFPROM driver");
86 MODULE_LICENSE("GPL v2");