29be47fcd6
- Remove static nvmem_config declaration - Remove zynqmp_nvmem_data Signed-off-by: Praveen Teja Kundanala <praveen.teja.kundanala@amd.com> Acked-by: Kalyani Akula <Kalyani.akula@amd.com> Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> Link: https://lore.kernel.org/r/20240224114516.86365-7-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
70 lines
1.7 KiB
C
70 lines
1.7 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2019 Xilinx, Inc.
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* Copyright (C) 2022 - 2023, Advanced Micro Devices, Inc.
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*/
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#include <linux/module.h>
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#include <linux/nvmem-provider.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/firmware/xlnx-zynqmp.h>
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#define SILICON_REVISION_MASK 0xF
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static int zynqmp_nvmem_read(void *context, unsigned int offset,
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void *val, size_t bytes)
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{
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struct device *dev = context;
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int ret;
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int idcode;
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int version;
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ret = zynqmp_pm_get_chipid(&idcode, &version);
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if (ret < 0)
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return ret;
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dev_dbg(dev, "Read chipid val %x %x\n", idcode, version);
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*(int *)val = version & SILICON_REVISION_MASK;
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return 0;
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}
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static const struct of_device_id zynqmp_nvmem_match[] = {
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{ .compatible = "xlnx,zynqmp-nvmem-fw", },
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{ /* sentinel */ },
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};
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MODULE_DEVICE_TABLE(of, zynqmp_nvmem_match);
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static int zynqmp_nvmem_probe(struct platform_device *pdev)
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{
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struct device *dev = &pdev->dev;
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struct nvmem_config econfig = {};
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econfig.name = "zynqmp-nvmem";
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econfig.owner = THIS_MODULE;
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econfig.word_size = 1;
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econfig.size = 1;
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econfig.dev = dev;
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econfig.add_legacy_fixed_of_cells = true;
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econfig.read_only = true;
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econfig.reg_read = zynqmp_nvmem_read;
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return PTR_ERR_OR_ZERO(devm_nvmem_register(dev, &econfig));
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}
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static struct platform_driver zynqmp_nvmem_driver = {
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.probe = zynqmp_nvmem_probe,
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.driver = {
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.name = "zynqmp-nvmem",
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.of_match_table = zynqmp_nvmem_match,
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},
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};
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module_platform_driver(zynqmp_nvmem_driver);
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MODULE_AUTHOR("Michal Simek <michal.simek@amd.com>, Nava kishore Manne <nava.kishore.manne@amd.com>");
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MODULE_DESCRIPTION("ZynqMP NVMEM driver");
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MODULE_LICENSE("GPL");
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