mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2026-08-09 06:14:34 +02:00
Uwe Kleine-König (The Capable Hub)
995832b2ce
Replace the #include of <linux/mod_devicetable.h> by the more specific <linux/device-id/*.h> where applicable. For most cases the include can be dropped completely, only a few drivers need one or two headers added. Acked-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com>
97 lines
2.1 KiB
C
97 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#include <linux/firmware/qcom/qcom_scm.h>
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#include <linux/nvmem-provider.h>
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#include <linux/platform_device.h>
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#include <linux/pm_runtime.h>
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/**
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* struct sec_qfprom - structure holding secure qfprom attributes
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*
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* @base: starting physical address for secure qfprom corrected address space.
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* @dev: qfprom device structure.
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*/
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struct sec_qfprom {
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phys_addr_t base;
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struct device *dev;
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};
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static int sec_qfprom_reg_read(void *context, unsigned int reg, void *_val, size_t bytes)
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{
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struct sec_qfprom *priv = context;
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unsigned int i;
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u8 *val = _val;
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u32 read_val;
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u8 *tmp;
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for (i = 0; i < bytes; i++, reg++) {
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if (i == 0 || reg % 4 == 0) {
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if (qcom_scm_io_readl(priv->base + (reg & ~3), &read_val)) {
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dev_err(priv->dev, "Couldn't access fuse register\n");
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return -EINVAL;
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}
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tmp = (u8 *)&read_val;
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}
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val[i] = tmp[reg & 3];
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}
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return 0;
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}
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static int sec_qfprom_probe(struct platform_device *pdev)
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{
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struct nvmem_config econfig = {
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.name = "sec-qfprom",
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.add_legacy_fixed_of_cells = true,
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.stride = 1,
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.word_size = 1,
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.id = NVMEM_DEVID_AUTO,
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.reg_read = sec_qfprom_reg_read,
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};
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struct device *dev = &pdev->dev;
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struct nvmem_device *nvmem;
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struct sec_qfprom *priv;
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struct resource *res;
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priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res)
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return -EINVAL;
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priv->base = res->start;
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econfig.size = resource_size(res);
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econfig.dev = dev;
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econfig.priv = priv;
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priv->dev = dev;
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nvmem = devm_nvmem_register(dev, &econfig);
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return PTR_ERR_OR_ZERO(nvmem);
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}
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static const struct of_device_id sec_qfprom_of_match[] = {
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{ .compatible = "qcom,sec-qfprom" },
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{/* sentinel */},
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};
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MODULE_DEVICE_TABLE(of, sec_qfprom_of_match);
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static struct platform_driver qfprom_driver = {
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.probe = sec_qfprom_probe,
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.driver = {
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.name = "qcom_sec_qfprom",
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.of_match_table = sec_qfprom_of_match,
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},
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};
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module_platform_driver(qfprom_driver);
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MODULE_DESCRIPTION("Qualcomm Secure QFPROM driver");
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MODULE_LICENSE("GPL");
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