89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Siemens SIMATIC IPC driver for CMOS battery monitoring
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*
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* Copyright (c) Siemens AG, 2023
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*
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* Authors:
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* Henning Schild <henning.schild@siemens.com>
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*/
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#include <linux/gpio/machine.h>
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#include <linux/gpio/consumer.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/platform_data/x86/simatic-ipc-base.h>
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#include "simatic-ipc-batt.h"
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static struct gpiod_lookup_table *batt_lookup_table;
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static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_227g = {
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.table = {
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GPIO_LOOKUP_IDX("gpio-f7188x-7", 6, NULL, 0, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX("gpio-f7188x-7", 5, NULL, 1, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX("INTC1020:01", 66, NULL, 2, GPIO_ACTIVE_HIGH),
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{} /* Terminating entry */
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},
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};
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static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_39a = {
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.table = {
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GPIO_LOOKUP_IDX("gpio-f7188x-6", 4, NULL, 0, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX("gpio-f7188x-6", 3, NULL, 1, GPIO_ACTIVE_HIGH),
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{} /* Terminating entry */
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},
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};
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static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_59a = {
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.table = {
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GPIO_LOOKUP_IDX("gpio-f7188x-7", 6, NULL, 0, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX("gpio-f7188x-7", 5, NULL, 1, GPIO_ACTIVE_HIGH),
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GPIO_LOOKUP_IDX("INTC1056:00", 438, NULL, 2, GPIO_ACTIVE_HIGH),
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{} /* Terminating entry */
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}
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};
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static void simatic_ipc_batt_f7188x_remove(struct platform_device *pdev)
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{
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simatic_ipc_batt_remove(pdev, batt_lookup_table);
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}
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static int simatic_ipc_batt_f7188x_probe(struct platform_device *pdev)
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{
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const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
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switch (plat->devmode) {
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case SIMATIC_IPC_DEVICE_227G:
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batt_lookup_table = &simatic_ipc_batt_gpio_table_227g;
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break;
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case SIMATIC_IPC_DEVICE_BX_39A:
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batt_lookup_table = &simatic_ipc_batt_gpio_table_bx_39a;
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break;
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case SIMATIC_IPC_DEVICE_BX_59A:
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batt_lookup_table = &simatic_ipc_batt_gpio_table_bx_59a;
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break;
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default:
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return -ENODEV;
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}
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return simatic_ipc_batt_probe(pdev, batt_lookup_table);
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}
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static struct platform_driver simatic_ipc_batt_driver = {
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.probe = simatic_ipc_batt_f7188x_probe,
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.remove_new = simatic_ipc_batt_f7188x_remove,
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.driver = {
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.name = KBUILD_MODNAME,
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},
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};
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module_platform_driver(simatic_ipc_batt_driver);
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MODULE_DESCRIPTION("CMOS Battery monitoring for Simatic IPCs based on Nuvoton GPIO");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("platform:" KBUILD_MODNAME);
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MODULE_SOFTDEP("pre: simatic-ipc-batt gpio_f7188x platform:elkhartlake-pinctrl platform:alderlake-pinctrl");
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MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
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