drivers/nvmem/nintendo-otp.c

1 // SPDX-License-Identifier: GPL-2.0-only
3  * Nintendo Wii and Wii U OTP driver
5  * This is a driver exposing the OTP of a Nintendo Wii or Wii U console.
7  * This memory contains common and per-console keys, signatures and
10  * Based on reversed documentation from https://wiiubrew.org/wiki/Hardware/OTP
19 #include <linux/nvmem-provider.h>
39 	.name = "wii-otp",
40 	.num_banks = 1,
44 	.name = "wiiu-otp",
56 	while (words--) {  in nintendo_otp_reg_read()
59 		iowrite32be(OTP_READ | bank | addr, priv->regs + HW_OTPCMD);  in nintendo_otp_reg_read()
60 		*val++ = ioread32be(priv->regs + HW_OTPDATA);  in nintendo_otp_reg_read()
68 	{ .compatible = "nintendo,hollywood-otp", .data = &hollywood_otp_data },
69 	{ .compatible = "nintendo,latte-otp", .data = &latte_otp_data },
76 	struct device *dev = &pdev->dev;  in nintendo_otp_probe()
92 		return -ENOMEM;  in nintendo_otp_probe()
94 	priv->regs = devm_platform_ioremap_resource(pdev, 0);  in nintendo_otp_probe()
95 	if (IS_ERR(priv->regs))  in nintendo_otp_probe()
96 		return PTR_ERR(priv->regs);  in nintendo_otp_probe()
98 	if (of_id->data) {  in nintendo_otp_probe()
99 		const struct nintendo_otp_devtype_data *data = of_id->data;  in nintendo_otp_probe()
100 		config.name = data->name;  in nintendo_otp_probe()
101 		config.size = data->num_banks * BANK_SIZE;  in nintendo_otp_probe()
115 		.name = "nintendo-otp",
121 MODULE_DESCRIPTION("Nintendo Wii and Wii U OTP driver");