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

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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: Henning Schild <henning.schild@siemens.com>
Link: https://lore.kernel.org/r/20230713115639.16419-3-henning.schild@siemens.com
Signed-off-by: Lee Jones <lee@kernel.org>
This commit is contained in:
Henning Schild 2023-07-13 13:56:39 +02:00 committed by Lee Jones
parent ee4e80b296
commit 7e6d86e99a
4 changed files with 75 additions and 0 deletions
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13
drivers/leds/simple/Kconfig
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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.

1
drivers/leds/simple/Makefile
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@ -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

4
drivers/leds/simple/simatic-ipc-leds-gpio-core.c
View File

@ -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);

57
drivers/leds/simple/simatic-ipc-leds-gpio-elkhartlake.c Normal file
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@ -0,0 +1,57 @@
// 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>");