Commit 7e6d86e9 authored by Henning Schild's avatar Henning Schild Committed by Lee Jones
Browse files

leds: simatic-ipc-leds-gpio: Add Elkhart Lake version 



This is used for the Siemens Simatic IPC BX-21A, which has its LEDs
connected to GPIOs provided by the Intel Elkhart Lake pinctrl driver.

Signed-off-by: default avatarHenning Schild <henning.schild@siemens.com>
Link: https://lore.kernel.org/r/20230713115639.16419-3-henning.schild@siemens.com


Signed-off-by: default avatarLee Jones <lee@kernel.org>
parent ee4e80b2

drivers/leds/simple/Kconfig

+13 −0
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@@ -35,3 +35,16 @@ config LEDS_SIEMENS_SIMATIC_IPC_F7188X 


	  To compile this driver as a module, choose M here: the module

	  will be called simatic-ipc-leds-gpio-f7188x.



config LEDS_SIEMENS_SIMATIC_IPC_ELKHARTLAKE

	tristate "LED driver for Siemens Simatic IPCs based on Intel Elkhart Lake GPIO"

	depends on LEDS_GPIO

	depends on PINCTRL_ELKHARTLAKE

	depends on SIEMENS_SIMATIC_IPC

	default LEDS_SIEMENS_SIMATIC_IPC

	help

	  This option enables support for the LEDs of several Industrial PCs

	  from Siemens based on Elkhart Lake GPIO i.e. BX-21A.



	  To compile this driver as a module, choose M here: the module

	  will be called simatic-ipc-leds-gpio-elkhartlake.

drivers/leds/simple/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -2,3 +2,4 @@ 
obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC)			+= simatic-ipc-leds.o

obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC_APOLLOLAKE)	+= simatic-ipc-leds-gpio-core.o simatic-ipc-leds-gpio-apollolake.o

obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC_F7188X)		+= simatic-ipc-leds-gpio-core.o simatic-ipc-leds-gpio-f7188x.o

obj-$(CONFIG_LEDS_SIEMENS_SIMATIC_IPC_ELKHARTLAKE)	+= simatic-ipc-leds-gpio-core.o simatic-ipc-leds-gpio-elkhartlake.o

drivers/leds/simple/simatic-ipc-leds-gpio-core.c

+4 −0
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@@ -57,6 +57,7 @@ int simatic_ipc_leds_gpio_probe(struct platform_device *pdev, 
	switch (plat->devmode) {

	case SIMATIC_IPC_DEVICE_127E:

	case SIMATIC_IPC_DEVICE_227G:

	case SIMATIC_IPC_DEVICE_BX_21A:

		break;

	default:

		return -ENODEV;
@@ -72,6 +73,9 @@ int simatic_ipc_leds_gpio_probe(struct platform_device *pdev, 
		goto out;

	}



	if (!table_extra)

		return 0;



	table_extra->dev_id = dev_name(dev);

	gpiod_add_lookup_table(table_extra);

drivers/leds/simple/simatic-ipc-leds-gpio-elkhartlake.c

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+57 −0
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// SPDX-License-Identifier: GPL-2.0

/*

 * Siemens SIMATIC IPC driver for GPIO based LEDs

 *

 * Copyright (c) Siemens AG, 2023

 *

 * Author:

 *  Henning Schild <henning.schild@siemens.com>

 */



#include <linux/gpio/machine.h>

#include <linux/gpio/consumer.h>

#include <linux/leds.h>

#include <linux/module.h>

#include <linux/platform_device.h>

#include <linux/platform_data/x86/simatic-ipc-base.h>



#include "simatic-ipc-leds-gpio.h"



static struct gpiod_lookup_table simatic_ipc_led_gpio_table = {

	.dev_id = "leds-gpio",

	.table = {

		GPIO_LOOKUP_IDX("INTC1020:04", 72, NULL, 0, GPIO_ACTIVE_HIGH),

		GPIO_LOOKUP_IDX("INTC1020:04", 77, NULL, 1, GPIO_ACTIVE_HIGH),

		GPIO_LOOKUP_IDX("INTC1020:04", 78, NULL, 2, GPIO_ACTIVE_HIGH),

		GPIO_LOOKUP_IDX("INTC1020:04", 58, NULL, 3, GPIO_ACTIVE_HIGH),

		GPIO_LOOKUP_IDX("INTC1020:04", 60, NULL, 4, GPIO_ACTIVE_HIGH),

		GPIO_LOOKUP_IDX("INTC1020:04", 62, NULL, 5, GPIO_ACTIVE_HIGH),

		{} /* Terminating entry */

	},

};



static int simatic_ipc_leds_gpio_elkhartlake_probe(struct platform_device *pdev)

{

	return simatic_ipc_leds_gpio_probe(pdev, &simatic_ipc_led_gpio_table,

					   NULL);

}



static int simatic_ipc_leds_gpio_elkhartlake_remove(struct platform_device *pdev)

{

	return simatic_ipc_leds_gpio_remove(pdev, &simatic_ipc_led_gpio_table,

					    NULL);

}



static struct platform_driver simatic_ipc_led_gpio_elkhartlake_driver = {

	.probe = simatic_ipc_leds_gpio_elkhartlake_probe,

	.remove = simatic_ipc_leds_gpio_elkhartlake_remove,

	.driver = {

		.name = KBUILD_MODNAME,

	},

};

module_platform_driver(simatic_ipc_led_gpio_elkhartlake_driver);



MODULE_LICENSE("GPL v2");

MODULE_ALIAS("platform:" KBUILD_MODNAME);

MODULE_SOFTDEP("pre: simatic-ipc-leds-gpio-core platform:elkhartlake-pinctrl");

MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");