drivers/nvmem/sec-qfprom.c

1 // SPDX-License-Identifier: GPL-2.0-only
8 #include <linux/nvmem-provider.h>
13  * struct sec_qfprom - structure holding secure qfprom attributes
15  * @base: starting physical address for secure qfprom corrected address space.
23 static int sec_qfprom_reg_read(void *context, unsigned int reg, void *_val, size_t bytes)  in sec_qfprom_reg_read()  argument
31 	for (i = 0; i < bytes; i++, reg++) {  in sec_qfprom_reg_read()
32 		if (i == 0 || reg % 4 == 0) {  in sec_qfprom_reg_read()
33 			if (qcom_scm_io_readl(priv->base + (reg & ~3), &read_val)) {  in sec_qfprom_reg_read()
34 				dev_err(priv->dev, "Couldn't access fuse register\n");  in sec_qfprom_reg_read()
35 				return -EINVAL;  in sec_qfprom_reg_read()
40 		val[i] = tmp[reg & 3];  in sec_qfprom_reg_read()
49 		.name = "sec-qfprom",  in sec_qfprom_probe()
56 	struct device *dev = &pdev->dev;  in sec_qfprom_probe()
63 		return -ENOMEM;  in sec_qfprom_probe()
67 		return -EINVAL;  in sec_qfprom_probe()
69 	priv->base = res->start;  in sec_qfprom_probe()
75 	priv->dev = dev;  in sec_qfprom_probe()
83 	{ .compatible = "qcom,sec-qfprom" },
96 MODULE_DESCRIPTION("Qualcomm Secure QFPROM driver");