diff options
Diffstat (limited to 'drivers/nvmem/bcm-ocotp.c')
| -rw-r--r-- | drivers/nvmem/bcm-ocotp.c | 68 |
1 files changed, 23 insertions, 45 deletions
diff --git a/drivers/nvmem/bcm-ocotp.c b/drivers/nvmem/bcm-ocotp.c index 3c56e3b2bd65..2490f44caa40 100644 --- a/drivers/nvmem/bcm-ocotp.c +++ b/drivers/nvmem/bcm-ocotp.c @@ -1,23 +1,13 @@ -/* - * Copyright (C) 2016 Broadcom - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any - * kind, whether express or implied; without even the implied warranty - * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - */ +// SPDX-License-Identifier: GPL-2.0-only +// Copyright (C) 2016 Broadcom +#include <linux/acpi.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/io.h> #include <linux/module.h> #include <linux/nvmem-provider.h> #include <linux/of.h> -#include <linux/of_address.h> #include <linux/platform_device.h> /* @@ -78,9 +68,9 @@ static struct otpc_map otp_map_v2 = { }; struct otpc_priv { - struct device *dev; - void __iomem *base; - struct otpc_map *map; + struct device *dev; + void __iomem *base; + const struct otpc_map *map; struct nvmem_config *config; }; @@ -232,23 +222,27 @@ static struct nvmem_config bcm_otpc_nvmem_config = { .read_only = false, .word_size = 4, .stride = 4, - .owner = THIS_MODULE, .reg_read = bcm_otpc_read, .reg_write = bcm_otpc_write, }; static const struct of_device_id bcm_otpc_dt_ids[] = { - { .compatible = "brcm,ocotp" }, - { .compatible = "brcm,ocotp-v2" }, + { .compatible = "brcm,ocotp", .data = &otp_map }, + { .compatible = "brcm,ocotp-v2", .data = &otp_map_v2 }, { }, }; MODULE_DEVICE_TABLE(of, bcm_otpc_dt_ids); +static const struct acpi_device_id bcm_otpc_acpi_ids[] __maybe_unused = { + { .id = "BRCM0700", .driver_data = (kernel_ulong_t)&otp_map }, + { .id = "BRCM0701", .driver_data = (kernel_ulong_t)&otp_map_v2 }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(acpi, bcm_otpc_acpi_ids); + static int bcm_otpc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct device_node *dn = dev->of_node; - struct resource *res; struct otpc_priv *priv; struct nvmem_device *nvmem; int err; @@ -258,19 +252,12 @@ static int bcm_otpc_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; - if (of_device_is_compatible(dev->of_node, "brcm,ocotp")) - priv->map = &otp_map; - else if (of_device_is_compatible(dev->of_node, "brcm,ocotp-v2")) - priv->map = &otp_map_v2; - else { - dev_err(&pdev->dev, - "%s otpc config map not defined\n", __func__); - return -EINVAL; - } + priv->map = device_get_match_data(dev); + if (!priv->map) + return -ENODEV; /* Get OTP base address register. */ - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - priv->base = devm_ioremap_resource(dev, res); + priv->base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(priv->base)) { dev_err(dev, "unable to map I/O memory\n"); return PTR_ERR(priv->base); @@ -283,7 +270,7 @@ static int bcm_otpc_probe(struct platform_device *pdev) reset_start_bit(priv->base); /* Read size of memory in words. */ - err = of_property_read_u32(dn, "brcm,ocotp-size", &num_words); + err = device_property_read_u32(dev, "brcm,ocotp-size", &num_words); if (err) { dev_err(dev, "size parameter not specified\n"); return -EINVAL; @@ -296,37 +283,28 @@ static int bcm_otpc_probe(struct platform_device *pdev) bcm_otpc_nvmem_config.dev = dev; bcm_otpc_nvmem_config.priv = priv; - if (of_device_is_compatible(dev->of_node, "brcm,ocotp-v2")) { + if (priv->map == &otp_map_v2) { bcm_otpc_nvmem_config.word_size = 8; bcm_otpc_nvmem_config.stride = 8; } priv->config = &bcm_otpc_nvmem_config; - nvmem = nvmem_register(&bcm_otpc_nvmem_config); + nvmem = devm_nvmem_register(dev, &bcm_otpc_nvmem_config); if (IS_ERR(nvmem)) { dev_err(dev, "error registering nvmem config\n"); return PTR_ERR(nvmem); } - platform_set_drvdata(pdev, nvmem); - return 0; } -static int bcm_otpc_remove(struct platform_device *pdev) -{ - struct nvmem_device *nvmem = platform_get_drvdata(pdev); - - return nvmem_unregister(nvmem); -} - static struct platform_driver bcm_otpc_driver = { .probe = bcm_otpc_probe, - .remove = bcm_otpc_remove, .driver = { .name = "brcm-otpc", .of_match_table = bcm_otpc_dt_ids, + .acpi_match_table = ACPI_PTR(bcm_otpc_acpi_ids), }, }; module_platform_driver(bcm_otpc_driver); |