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-rw-r--r--drivers/leds/simple/Kconfig51
-rw-r--r--drivers/leds/simple/Makefile5
-rw-r--r--drivers/leds/simple/simatic-ipc-leds-gpio-apollolake.c66
-rw-r--r--drivers/leds/simple/simatic-ipc-leds-gpio-core.c108
-rw-r--r--drivers/leds/simple/simatic-ipc-leds-gpio-elkhartlake.c57
-rw-r--r--drivers/leds/simple/simatic-ipc-leds-gpio-f7188x.c66
-rw-r--r--drivers/leds/simple/simatic-ipc-leds-gpio.h22
-rw-r--r--drivers/leds/simple/simatic-ipc-leds.c133
8 files changed, 508 insertions, 0 deletions
diff --git a/drivers/leds/simple/Kconfig b/drivers/leds/simple/Kconfig
new file mode 100644
index 0000000000..e616cc6d60
--- /dev/null
+++ b/drivers/leds/simple/Kconfig
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0-only
+config LEDS_SIEMENS_SIMATIC_IPC
+ tristate "LED driver for Siemens Simatic IPCs"
+ depends on LEDS_CLASS
+ depends on SIEMENS_SIMATIC_IPC
+ default y
+ help
+ This option enables support for the LEDs of several Industrial PCs
+ from Siemens.
+
+ To compile this driver as a module, choose M here: the module
+ will be called simatic-ipc-leds.
+
+config LEDS_SIEMENS_SIMATIC_IPC_APOLLOLAKE
+ tristate "LED driver for Siemens Simatic IPCs based on Intel Apollo Lake GPIO"
+ depends on LEDS_GPIO
+ depends on PINCTRL_BROXTON
+ 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 Apollo Lake GPIO i.e. IPC127E.
+
+ To compile this driver as a module, choose M here: the module
+ will be called simatic-ipc-leds-gpio-apollolake.
+
+config LEDS_SIEMENS_SIMATIC_IPC_F7188X
+ tristate "LED driver for Siemens Simatic IPCs based on Nuvoton GPIO"
+ depends on LEDS_GPIO
+ depends on GPIO_F7188X
+ 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 Nuvoton GPIO i.e. IPC227G.
+
+ 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.
diff --git a/drivers/leds/simple/Makefile b/drivers/leds/simple/Makefile
new file mode 100644
index 0000000000..783578f11b
--- /dev/null
+++ b/drivers/leds/simple/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+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
diff --git a/drivers/leds/simple/simatic-ipc-leds-gpio-apollolake.c b/drivers/leds/simple/simatic-ipc-leds-gpio-apollolake.c
new file mode 100644
index 0000000000..e1c712729d
--- /dev/null
+++ b/drivers/leds/simple/simatic-ipc-leds-gpio-apollolake.c
@@ -0,0 +1,66 @@
+// 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("apollolake-pinctrl.0", 52, NULL, 0, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 53, NULL, 1, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 57, NULL, 2, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 58, NULL, 3, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 60, NULL, 4, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 51, NULL, 5, GPIO_ACTIVE_LOW),
+ {} /* Terminating entry */
+ },
+};
+
+static struct gpiod_lookup_table simatic_ipc_led_gpio_table_extra = {
+ .dev_id = NULL, /* Filled during initialization */
+ .table = {
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 56, NULL, 6, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 59, NULL, 7, GPIO_ACTIVE_HIGH),
+ {} /* Terminating entry */
+ },
+};
+
+static int simatic_ipc_leds_gpio_apollolake_probe(struct platform_device *pdev)
+{
+ return simatic_ipc_leds_gpio_probe(pdev, &simatic_ipc_led_gpio_table,
+ &simatic_ipc_led_gpio_table_extra);
+}
+
+static int simatic_ipc_leds_gpio_apollolake_remove(struct platform_device *pdev)
+{
+ return simatic_ipc_leds_gpio_remove(pdev, &simatic_ipc_led_gpio_table,
+ &simatic_ipc_led_gpio_table_extra);
+}
+
+static struct platform_driver simatic_ipc_led_gpio_apollolake_driver = {
+ .probe = simatic_ipc_leds_gpio_apollolake_probe,
+ .remove = simatic_ipc_leds_gpio_apollolake_remove,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+};
+module_platform_driver(simatic_ipc_led_gpio_apollolake_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" KBUILD_MODNAME);
+MODULE_SOFTDEP("pre: simatic-ipc-leds-gpio-core platform:apollolake-pinctrl");
+MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
diff --git a/drivers/leds/simple/simatic-ipc-leds-gpio-core.c b/drivers/leds/simple/simatic-ipc-leds-gpio-core.c
new file mode 100644
index 0000000000..c552ea73ed
--- /dev/null
+++ b/drivers/leds/simple/simatic-ipc-leds-gpio-core.c
@@ -0,0 +1,108 @@
+// 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 platform_device *simatic_leds_pdev;
+
+static const struct gpio_led simatic_ipc_gpio_leds[] = {
+ { .name = "red:" LED_FUNCTION_STATUS "-1" },
+ { .name = "green:" LED_FUNCTION_STATUS "-1" },
+ { .name = "red:" LED_FUNCTION_STATUS "-2" },
+ { .name = "green:" LED_FUNCTION_STATUS "-2" },
+ { .name = "red:" LED_FUNCTION_STATUS "-3" },
+ { .name = "green:" LED_FUNCTION_STATUS "-3" },
+};
+
+static const struct gpio_led_platform_data simatic_ipc_gpio_leds_pdata = {
+ .num_leds = ARRAY_SIZE(simatic_ipc_gpio_leds),
+ .leds = simatic_ipc_gpio_leds,
+};
+
+int simatic_ipc_leds_gpio_remove(struct platform_device *pdev,
+ struct gpiod_lookup_table *table,
+ struct gpiod_lookup_table *table_extra)
+{
+ gpiod_remove_lookup_table(table);
+ gpiod_remove_lookup_table(table_extra);
+ platform_device_unregister(simatic_leds_pdev);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(simatic_ipc_leds_gpio_remove);
+
+int simatic_ipc_leds_gpio_probe(struct platform_device *pdev,
+ struct gpiod_lookup_table *table,
+ struct gpiod_lookup_table *table_extra)
+{
+ const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
+ struct device *dev = &pdev->dev;
+ struct gpio_desc *gpiod;
+ int err;
+
+ switch (plat->devmode) {
+ case SIMATIC_IPC_DEVICE_127E:
+ case SIMATIC_IPC_DEVICE_227G:
+ case SIMATIC_IPC_DEVICE_BX_21A:
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ gpiod_add_lookup_table(table);
+ simatic_leds_pdev = platform_device_register_resndata(NULL,
+ "leds-gpio", PLATFORM_DEVID_NONE, NULL, 0,
+ &simatic_ipc_gpio_leds_pdata,
+ sizeof(simatic_ipc_gpio_leds_pdata));
+ if (IS_ERR(simatic_leds_pdev)) {
+ err = PTR_ERR(simatic_leds_pdev);
+ goto out;
+ }
+
+ if (!table_extra)
+ return 0;
+
+ table_extra->dev_id = dev_name(dev);
+ gpiod_add_lookup_table(table_extra);
+
+ /* PM_BIOS_BOOT_N */
+ gpiod = gpiod_get_index(dev, NULL, 6, GPIOD_OUT_LOW);
+ if (IS_ERR(gpiod)) {
+ err = PTR_ERR(gpiod);
+ goto out;
+ }
+ gpiod_put(gpiod);
+
+ /* PM_WDT_OUT */
+ gpiod = gpiod_get_index(dev, NULL, 7, GPIOD_OUT_LOW);
+ if (IS_ERR(gpiod)) {
+ err = PTR_ERR(gpiod);
+ goto out;
+ }
+ gpiod_put(gpiod);
+
+ return 0;
+out:
+ simatic_ipc_leds_gpio_remove(pdev, table, table_extra);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(simatic_ipc_leds_gpio_probe);
+
+MODULE_LICENSE("GPL v2");
+MODULE_SOFTDEP("pre: platform:leds-gpio");
+MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
diff --git a/drivers/leds/simple/simatic-ipc-leds-gpio-elkhartlake.c b/drivers/leds/simple/simatic-ipc-leds-gpio-elkhartlake.c
new file mode 100644
index 0000000000..6ba21dbb3b
--- /dev/null
+++ b/drivers/leds/simple/simatic-ipc-leds-gpio-elkhartlake.c
@@ -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>");
diff --git a/drivers/leds/simple/simatic-ipc-leds-gpio-f7188x.c b/drivers/leds/simple/simatic-ipc-leds-gpio-f7188x.c
new file mode 100644
index 0000000000..583a6b6c7c
--- /dev/null
+++ b/drivers/leds/simple/simatic-ipc-leds-gpio-f7188x.c
@@ -0,0 +1,66 @@
+// 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("gpio-f7188x-2", 0, NULL, 0, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("gpio-f7188x-2", 1, NULL, 1, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("gpio-f7188x-2", 2, NULL, 2, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("gpio-f7188x-2", 3, NULL, 3, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("gpio-f7188x-2", 4, NULL, 4, GPIO_ACTIVE_LOW),
+ GPIO_LOOKUP_IDX("gpio-f7188x-2", 5, NULL, 5, GPIO_ACTIVE_LOW),
+ {} /* Terminating entry */
+ },
+};
+
+static struct gpiod_lookup_table simatic_ipc_led_gpio_table_extra = {
+ .dev_id = NULL, /* Filled during initialization */
+ .table = {
+ GPIO_LOOKUP_IDX("gpio-f7188x-3", 6, NULL, 6, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX("gpio-f7188x-3", 7, NULL, 7, GPIO_ACTIVE_HIGH),
+ {} /* Terminating entry */
+ },
+};
+
+static int simatic_ipc_leds_gpio_f7188x_probe(struct platform_device *pdev)
+{
+ return simatic_ipc_leds_gpio_probe(pdev, &simatic_ipc_led_gpio_table,
+ &simatic_ipc_led_gpio_table_extra);
+}
+
+static int simatic_ipc_leds_gpio_f7188x_remove(struct platform_device *pdev)
+{
+ return simatic_ipc_leds_gpio_remove(pdev, &simatic_ipc_led_gpio_table,
+ &simatic_ipc_led_gpio_table_extra);
+}
+
+static struct platform_driver simatic_ipc_led_gpio_driver = {
+ .probe = simatic_ipc_leds_gpio_f7188x_probe,
+ .remove = simatic_ipc_leds_gpio_f7188x_remove,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+};
+module_platform_driver(simatic_ipc_led_gpio_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" KBUILD_MODNAME);
+MODULE_SOFTDEP("pre: simatic-ipc-leds-gpio-core gpio_f7188x");
+MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
diff --git a/drivers/leds/simple/simatic-ipc-leds-gpio.h b/drivers/leds/simple/simatic-ipc-leds-gpio.h
new file mode 100644
index 0000000000..3d4877aa4e
--- /dev/null
+++ b/drivers/leds/simple/simatic-ipc-leds-gpio.h
@@ -0,0 +1,22 @@
+/* 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>
+ */
+
+#ifndef _SIMATIC_IPC_LEDS_GPIO_H
+#define _SIMATIC_IPC_LEDS_GPIO_H
+
+int simatic_ipc_leds_gpio_probe(struct platform_device *pdev,
+ struct gpiod_lookup_table *table,
+ struct gpiod_lookup_table *table_extra);
+
+int simatic_ipc_leds_gpio_remove(struct platform_device *pdev,
+ struct gpiod_lookup_table *table,
+ struct gpiod_lookup_table *table_extra);
+
+#endif /* _SIMATIC_IPC_LEDS_GPIO_H */
diff --git a/drivers/leds/simple/simatic-ipc-leds.c b/drivers/leds/simple/simatic-ipc-leds.c
new file mode 100644
index 0000000000..2124f6d099
--- /dev/null
+++ b/drivers/leds/simple/simatic-ipc-leds.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Siemens SIMATIC IPC driver for LEDs
+ *
+ * Copyright (c) Siemens AG, 2018-2021
+ *
+ * Authors:
+ * Henning Schild <henning.schild@siemens.com>
+ * Jan Kiszka <jan.kiszka@siemens.com>
+ * Gerd Haeussler <gerd.haeussler.ext@siemens.com>
+ */
+
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/leds.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/platform_data/x86/simatic-ipc-base.h>
+#include <linux/platform_device.h>
+#include <linux/sizes.h>
+#include <linux/spinlock.h>
+
+#define SIMATIC_IPC_LED_PORT_BASE 0x404E
+
+struct simatic_ipc_led {
+ unsigned int value; /* mask for io */
+ char *name;
+ struct led_classdev cdev;
+};
+
+static struct simatic_ipc_led simatic_ipc_leds_io[] = {
+ {1 << 15, "green:" LED_FUNCTION_STATUS "-1" },
+ {1 << 7, "yellow:" LED_FUNCTION_STATUS "-1" },
+ {1 << 14, "red:" LED_FUNCTION_STATUS "-2" },
+ {1 << 6, "yellow:" LED_FUNCTION_STATUS "-2" },
+ {1 << 13, "red:" LED_FUNCTION_STATUS "-3" },
+ {1 << 5, "yellow:" LED_FUNCTION_STATUS "-3" },
+ { }
+};
+
+static struct resource simatic_ipc_led_io_res =
+ DEFINE_RES_IO_NAMED(SIMATIC_IPC_LED_PORT_BASE, SZ_2, KBUILD_MODNAME);
+
+static DEFINE_SPINLOCK(reg_lock);
+
+static inline struct simatic_ipc_led *cdev_to_led(struct led_classdev *led_cd)
+{
+ return container_of(led_cd, struct simatic_ipc_led, cdev);
+}
+
+static void simatic_ipc_led_set_io(struct led_classdev *led_cd,
+ enum led_brightness brightness)
+{
+ struct simatic_ipc_led *led = cdev_to_led(led_cd);
+ unsigned long flags;
+ unsigned int val;
+
+ spin_lock_irqsave(&reg_lock, flags);
+
+ val = inw(SIMATIC_IPC_LED_PORT_BASE);
+ if (brightness == LED_OFF)
+ outw(val | led->value, SIMATIC_IPC_LED_PORT_BASE);
+ else
+ outw(val & ~led->value, SIMATIC_IPC_LED_PORT_BASE);
+
+ spin_unlock_irqrestore(&reg_lock, flags);
+}
+
+static enum led_brightness simatic_ipc_led_get_io(struct led_classdev *led_cd)
+{
+ struct simatic_ipc_led *led = cdev_to_led(led_cd);
+
+ return inw(SIMATIC_IPC_LED_PORT_BASE) & led->value ? LED_OFF : led_cd->max_brightness;
+}
+
+static int simatic_ipc_leds_probe(struct platform_device *pdev)
+{
+ const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
+ struct device *dev = &pdev->dev;
+ struct simatic_ipc_led *ipcled;
+ struct led_classdev *cdev;
+ struct resource *res;
+ int err;
+
+ switch (plat->devmode) {
+ case SIMATIC_IPC_DEVICE_227D:
+ case SIMATIC_IPC_DEVICE_427E:
+ res = &simatic_ipc_led_io_res;
+ ipcled = simatic_ipc_leds_io;
+ /* on 227D the two bytes work the other way araound */
+ if (plat->devmode == SIMATIC_IPC_DEVICE_227D) {
+ while (ipcled->value) {
+ ipcled->value = swab16(ipcled->value);
+ ipcled++;
+ }
+ ipcled = simatic_ipc_leds_io;
+ }
+ if (!devm_request_region(dev, res->start, resource_size(res), KBUILD_MODNAME)) {
+ dev_err(dev, "Unable to register IO resource at %pR\n", res);
+ return -EBUSY;
+ }
+ break;
+ default:
+ return -ENODEV;
+ }
+
+ while (ipcled->value) {
+ cdev = &ipcled->cdev;
+ cdev->brightness_set = simatic_ipc_led_set_io;
+ cdev->brightness_get = simatic_ipc_led_get_io;
+ cdev->max_brightness = LED_ON;
+ cdev->name = ipcled->name;
+
+ err = devm_led_classdev_register(dev, cdev);
+ if (err < 0)
+ return err;
+ ipcled++;
+ }
+
+ return 0;
+}
+
+static struct platform_driver simatic_ipc_led_driver = {
+ .probe = simatic_ipc_leds_probe,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ }
+};
+module_platform_driver(simatic_ipc_led_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:" KBUILD_MODNAME);
+MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");