1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Siemens SIMATIC IPC driver for GPIO based LEDs
4  *
5  * Copyright (c) Siemens AG, 2023
6  *
7  * Author:
8  *  Henning Schild <henning.schild@siemens.com>
9  */
10 
11 #include <linux/gpio/machine.h>
12 #include <linux/gpio/consumer.h>
13 #include <linux/leds.h>
14 #include <linux/module.h>
15 #include <linux/platform_device.h>
16 #include <linux/platform_data/x86/simatic-ipc-base.h>
17 
18 #include "simatic-ipc-leds-gpio.h"
19 
20 static struct gpiod_lookup_table simatic_ipc_led_gpio_table = {
21 	.dev_id = "leds-gpio",
22 	.table = {
23 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 52, NULL, 0, GPIO_ACTIVE_LOW),
24 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 53, NULL, 1, GPIO_ACTIVE_LOW),
25 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 57, NULL, 2, GPIO_ACTIVE_LOW),
26 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 58, NULL, 3, GPIO_ACTIVE_LOW),
27 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 60, NULL, 4, GPIO_ACTIVE_LOW),
28 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 51, NULL, 5, GPIO_ACTIVE_LOW),
29 		{} /* Terminating entry */
30 	},
31 };
32 
33 static struct gpiod_lookup_table simatic_ipc_led_gpio_table_extra = {
34 	.dev_id = NULL, /* Filled during initialization */
35 	.table = {
36 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 56, NULL, 6, GPIO_ACTIVE_LOW),
37 		GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 59, NULL, 7, GPIO_ACTIVE_HIGH),
38 		{} /* Terminating entry */
39 	},
40 };
41 
simatic_ipc_leds_gpio_apollolake_probe(struct platform_device * pdev)42 static int simatic_ipc_leds_gpio_apollolake_probe(struct platform_device *pdev)
43 {
44 	return simatic_ipc_leds_gpio_probe(pdev, &simatic_ipc_led_gpio_table,
45 					   &simatic_ipc_led_gpio_table_extra);
46 }
47 
simatic_ipc_leds_gpio_apollolake_remove(struct platform_device * pdev)48 static int simatic_ipc_leds_gpio_apollolake_remove(struct platform_device *pdev)
49 {
50 	return simatic_ipc_leds_gpio_remove(pdev, &simatic_ipc_led_gpio_table,
51 					    &simatic_ipc_led_gpio_table_extra);
52 }
53 
54 static struct platform_driver simatic_ipc_led_gpio_apollolake_driver = {
55 	.probe = simatic_ipc_leds_gpio_apollolake_probe,
56 	.remove = simatic_ipc_leds_gpio_apollolake_remove,
57 	.driver = {
58 		.name = KBUILD_MODNAME,
59 	},
60 };
61 module_platform_driver(simatic_ipc_led_gpio_apollolake_driver);
62 
63 MODULE_LICENSE("GPL v2");
64 MODULE_ALIAS("platform:" KBUILD_MODNAME);
65 MODULE_SOFTDEP("pre: simatic-ipc-leds-gpio-core platform:apollolake-pinctrl");
66 MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
67