low level access for debug work and updating the firmware. Say
N unless you will be doing this on an Intel MID platform.
-config SIEMENS_SIMATIC_IPC
- tristate "Siemens Simatic IPC Class driver"
- help
- This Simatic IPC class driver is the central of several drivers. It
- is mainly used for system identification, after which drivers in other
- classes will take care of driving specifics of those machines.
- i.e. LEDs and watchdog.
-
- To compile this driver as a module, choose M here: the module
- will be called simatic-ipc.
-
-config SIEMENS_SIMATIC_IPC_BATT
- tristate "CMOS battery driver for Siemens Simatic IPCs"
- depends on HWMON
- depends on SIEMENS_SIMATIC_IPC
- default SIEMENS_SIMATIC_IPC
- help
- This option enables support for monitoring the voltage of the CMOS
- batteries of several Industrial PCs from Siemens.
-
- To compile this driver as a module, choose M here: the module
- will be called simatic-ipc-batt.
-
-config SIEMENS_SIMATIC_IPC_BATT_APOLLOLAKE
- tristate "CMOS Battery monitoring for Simatic IPCs based on Apollo Lake GPIO"
- depends on PINCTRL_BROXTON
- depends on SIEMENS_SIMATIC_IPC_BATT
- default SIEMENS_SIMATIC_IPC_BATT
- help
- This option enables CMOS battery monitoring for Simatic Industrial PCs
- from Siemens based on Apollo Lake GPIO.
-
- To compile this driver as a module, choose M here: the module
- will be called simatic-ipc-batt-apollolake.
-
-config SIEMENS_SIMATIC_IPC_BATT_ELKHARTLAKE
- tristate "CMOS Battery monitoring for Simatic IPCs based on Elkhart Lake GPIO"
- depends on PINCTRL_ELKHARTLAKE
- depends on SIEMENS_SIMATIC_IPC_BATT
- default SIEMENS_SIMATIC_IPC_BATT
- help
- This option enables CMOS battery monitoring for Simatic Industrial PCs
- from Siemens based on Elkhart Lake GPIO.
-
- To compile this driver as a module, choose M here: the module
- will be called simatic-ipc-batt-elkhartlake.
-
-config SIEMENS_SIMATIC_IPC_BATT_F7188X
- tristate "CMOS Battery monitoring for Simatic IPCs based on Nuvoton GPIO"
- depends on GPIO_F7188X
- depends on SIEMENS_SIMATIC_IPC_BATT
- default SIEMENS_SIMATIC_IPC_BATT
- help
- This option enables CMOS battery monitoring for Simatic Industrial PCs
- from Siemens based on Nuvoton GPIO.
-
- To compile this driver as a module, choose M here: the module
- will be called simatic-ipc-batt-elkhartlake.
+source "drivers/platform/x86/siemens/Kconfig"
config WINMATE_FM07_KEYS
tristate "Winmate FM07/FM07P front-panel keys driver"
obj-$(CONFIG_X86_INTEL_LPSS) += pmc_atom.o
# Siemens Simatic Industrial PCs
-obj-$(CONFIG_SIEMENS_SIMATIC_IPC) += simatic-ipc.o
-obj-$(CONFIG_SIEMENS_SIMATIC_IPC_BATT) += simatic-ipc-batt.o
-obj-$(CONFIG_SIEMENS_SIMATIC_IPC_BATT_APOLLOLAKE) += simatic-ipc-batt-apollolake.o
-obj-$(CONFIG_SIEMENS_SIMATIC_IPC_BATT_ELKHARTLAKE) += simatic-ipc-batt-elkhartlake.o
-obj-$(CONFIG_SIEMENS_SIMATIC_IPC_BATT_F7188X) += simatic-ipc-batt-f7188x.o
+obj-$(CONFIG_SIEMENS_SIMATIC_IPC) += siemens/
# Winmate
obj-$(CONFIG_WINMATE_FM07_KEYS) += winmate-fm07-keys.o
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Siemens X86 Platform Specific Drivers
+#
+
+config SIEMENS_SIMATIC_IPC
+ tristate "Siemens Simatic IPC Class driver"
+ help
+ This Simatic IPC class driver is the central of several drivers. It
+ is mainly used for system identification, after which drivers in other
+ classes will take care of driving specifics of those machines.
+ i.e. LEDs and watchdog.
+
+ To compile this driver as a module, choose M here: the module
+ will be called simatic-ipc.
+
+config SIEMENS_SIMATIC_IPC_BATT
+ tristate "CMOS battery driver for Siemens Simatic IPCs"
+ default SIEMENS_SIMATIC_IPC
+ depends on HWMON
+ depends on SIEMENS_SIMATIC_IPC
+ help
+ This option enables support for monitoring the voltage of the CMOS
+ batteries of several Industrial PCs from Siemens.
+
+ To compile this driver as a module, choose M here: the module
+ will be called simatic-ipc-batt.
+
+config SIEMENS_SIMATIC_IPC_BATT_APOLLOLAKE
+ tristate "CMOS Battery monitoring for Simatic IPCs based on Apollo Lake GPIO"
+ default SIEMENS_SIMATIC_IPC_BATT
+ depends on PINCTRL_BROXTON
+ depends on SIEMENS_SIMATIC_IPC_BATT
+ help
+ This option enables CMOS battery monitoring for Simatic Industrial PCs
+ from Siemens based on Apollo Lake GPIO.
+
+ To compile this driver as a module, choose M here: the module
+ will be called simatic-ipc-batt-apollolake.
+
+config SIEMENS_SIMATIC_IPC_BATT_ELKHARTLAKE
+ tristate "CMOS Battery monitoring for Simatic IPCs based on Elkhart Lake GPIO"
+ default SIEMENS_SIMATIC_IPC_BATT
+ depends on PINCTRL_ELKHARTLAKE
+ depends on SIEMENS_SIMATIC_IPC_BATT
+ help
+ This option enables CMOS battery monitoring for Simatic Industrial PCs
+ from Siemens based on Elkhart Lake GPIO.
+
+ To compile this driver as a module, choose M here: the module
+ will be called simatic-ipc-batt-elkhartlake.
+
+config SIEMENS_SIMATIC_IPC_BATT_F7188X
+ tristate "CMOS Battery monitoring for Simatic IPCs based on Nuvoton GPIO"
+ default SIEMENS_SIMATIC_IPC_BATT
+ depends on GPIO_F7188X
+ depends on SIEMENS_SIMATIC_IPC_BATT
+ help
+ This option enables CMOS battery monitoring for Simatic Industrial PCs
+ from Siemens based on Nuvoton GPIO.
+
+ To compile this driver as a module, choose M here: the module
+ will be called simatic-ipc-batt-elkhartlake.
--- /dev/null
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for linux/drivers/platform/x86/siemens
+# Siemens x86 Platform-Specific Drivers
+#
+
+obj-$(CONFIG_SIEMENS_SIMATIC_IPC) += simatic-ipc.o
+obj-$(CONFIG_SIEMENS_SIMATIC_IPC_BATT) += simatic-ipc-batt.o
+obj-$(CONFIG_SIEMENS_SIMATIC_IPC_BATT_APOLLOLAKE) += simatic-ipc-batt-apollolake.o
+obj-$(CONFIG_SIEMENS_SIMATIC_IPC_BATT_ELKHARTLAKE) += simatic-ipc-batt-elkhartlake.o
+obj-$(CONFIG_SIEMENS_SIMATIC_IPC_BATT_F7188X) += simatic-ipc-batt-f7188x.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Siemens SIMATIC IPC driver for CMOS battery monitoring
+ *
+ * Copyright (c) Siemens AG, 2023
+ *
+ * Authors:
+ * Henning Schild <henning.schild@siemens.com>
+ */
+
+#include <linux/gpio/machine.h>
+#include <linux/gpio/consumer.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include "simatic-ipc-batt.h"
+
+static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_127e = {
+ .table = {
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 55, NULL, 0, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 61, NULL, 1, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX("apollolake-pinctrl.1", 41, NULL, 2, GPIO_ACTIVE_HIGH),
+ {} /* Terminating entry */
+ },
+};
+
+static int simatic_ipc_batt_apollolake_remove(struct platform_device *pdev)
+{
+ return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_127e);
+}
+
+static int simatic_ipc_batt_apollolake_probe(struct platform_device *pdev)
+{
+ return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_127e);
+}
+
+static struct platform_driver simatic_ipc_batt_driver = {
+ .probe = simatic_ipc_batt_apollolake_probe,
+ .remove = simatic_ipc_batt_apollolake_remove,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+};
+
+module_platform_driver(simatic_ipc_batt_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" KBUILD_MODNAME);
+MODULE_SOFTDEP("pre: simatic-ipc-batt platform:apollolake-pinctrl");
+MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Siemens SIMATIC IPC driver for CMOS battery monitoring
+ *
+ * Copyright (c) Siemens AG, 2023
+ *
+ * Authors:
+ * Henning Schild <henning.schild@siemens.com>
+ */
+
+#include <linux/gpio/machine.h>
+#include <linux/gpio/consumer.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include "simatic-ipc-batt.h"
+
+static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_21a = {
+ .table = {
+ GPIO_LOOKUP_IDX("INTC1020:04", 18, NULL, 0, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX("INTC1020:04", 19, NULL, 1, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX("INTC1020:01", 66, NULL, 2, GPIO_ACTIVE_HIGH),
+ {} /* Terminating entry */
+ },
+};
+
+static int simatic_ipc_batt_elkhartlake_remove(struct platform_device *pdev)
+{
+ return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_bx_21a);
+}
+
+static int simatic_ipc_batt_elkhartlake_probe(struct platform_device *pdev)
+{
+ return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_bx_21a);
+}
+
+static struct platform_driver simatic_ipc_batt_driver = {
+ .probe = simatic_ipc_batt_elkhartlake_probe,
+ .remove = simatic_ipc_batt_elkhartlake_remove,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+};
+
+module_platform_driver(simatic_ipc_batt_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" KBUILD_MODNAME);
+MODULE_SOFTDEP("pre: simatic-ipc-batt platform:elkhartlake-pinctrl");
+MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Siemens SIMATIC IPC driver for CMOS battery monitoring
+ *
+ * Copyright (c) Siemens AG, 2023
+ *
+ * Authors:
+ * Henning Schild <henning.schild@siemens.com>
+ */
+
+#include <linux/gpio/machine.h>
+#include <linux/gpio/consumer.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/x86/simatic-ipc-base.h>
+
+#include "simatic-ipc-batt.h"
+
+static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_227g = {
+ .table = {
+ GPIO_LOOKUP_IDX("gpio-f7188x-7", 6, NULL, 0, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX("gpio-f7188x-7", 5, NULL, 1, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX("INTC1020:01", 66, NULL, 2, GPIO_ACTIVE_HIGH),
+ {} /* Terminating entry */
+ },
+};
+
+static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_39a = {
+ .table = {
+ GPIO_LOOKUP_IDX("gpio-f7188x-6", 4, NULL, 0, GPIO_ACTIVE_HIGH),
+ GPIO_LOOKUP_IDX("gpio-f7188x-6", 3, NULL, 1, GPIO_ACTIVE_HIGH),
+ {} /* Terminating entry */
+ },
+};
+
+static int simatic_ipc_batt_f7188x_remove(struct platform_device *pdev)
+{
+ const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
+
+ if (plat->devmode == SIMATIC_IPC_DEVICE_227G)
+ return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_227g);
+
+ return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_bx_39a);
+}
+
+static int simatic_ipc_batt_f7188x_probe(struct platform_device *pdev)
+{
+ const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
+
+ if (plat->devmode == SIMATIC_IPC_DEVICE_227G)
+ return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_227g);
+
+ return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_bx_39a);
+}
+
+static struct platform_driver simatic_ipc_batt_driver = {
+ .probe = simatic_ipc_batt_f7188x_probe,
+ .remove = simatic_ipc_batt_f7188x_remove,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+};
+
+module_platform_driver(simatic_ipc_batt_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" KBUILD_MODNAME);
+MODULE_SOFTDEP("pre: simatic-ipc-batt gpio_f7188x platform:elkhartlake-pinctrl");
+MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Siemens SIMATIC IPC driver for CMOS battery monitoring
+ *
+ * Copyright (c) Siemens AG, 2023
+ *
+ * Authors:
+ * Gerd Haeussler <gerd.haeussler.ext@siemens.com>
+ * Henning Schild <henning.schild@siemens.com>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/ioport.h>
+#include <linux/gpio/machine.h>
+#include <linux/gpio/consumer.h>
+#include <linux/hwmon.h>
+#include <linux/hwmon-sysfs.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/platform_data/x86/simatic-ipc-base.h>
+#include <linux/sizes.h>
+
+#include "simatic-ipc-batt.h"
+
+#define BATT_DELAY_MS (1000 * 60 * 60 * 24) /* 24 h delay */
+
+#define SIMATIC_IPC_BATT_LEVEL_FULL 3000
+#define SIMATIC_IPC_BATT_LEVEL_CRIT 2750
+#define SIMATIC_IPC_BATT_LEVEL_EMPTY 0
+
+static struct simatic_ipc_batt {
+ u8 devmode;
+ long current_state;
+ struct gpio_desc *gpios[3];
+ unsigned long last_updated_jiffies;
+} priv;
+
+static long simatic_ipc_batt_read_gpio(void)
+{
+ long r = SIMATIC_IPC_BATT_LEVEL_FULL;
+
+ if (priv.gpios[2]) {
+ gpiod_set_value(priv.gpios[2], 1);
+ msleep(150);
+ }
+
+ if (gpiod_get_value_cansleep(priv.gpios[0]))
+ r = SIMATIC_IPC_BATT_LEVEL_EMPTY;
+ else if (gpiod_get_value_cansleep(priv.gpios[1]))
+ r = SIMATIC_IPC_BATT_LEVEL_CRIT;
+
+ if (priv.gpios[2])
+ gpiod_set_value(priv.gpios[2], 0);
+
+ return r;
+}
+
+#define SIMATIC_IPC_BATT_PORT_BASE 0x404D
+static struct resource simatic_ipc_batt_io_res =
+ DEFINE_RES_IO_NAMED(SIMATIC_IPC_BATT_PORT_BASE, SZ_1, KBUILD_MODNAME);
+
+static long simatic_ipc_batt_read_io(struct device *dev)
+{
+ long r = SIMATIC_IPC_BATT_LEVEL_FULL;
+ struct resource *res = &simatic_ipc_batt_io_res;
+ u8 val;
+
+ if (!request_muxed_region(res->start, resource_size(res), res->name)) {
+ dev_err(dev, "Unable to register IO resource at %pR\n", res);
+ return -EBUSY;
+ }
+
+ val = inb(SIMATIC_IPC_BATT_PORT_BASE);
+ release_region(simatic_ipc_batt_io_res.start, resource_size(&simatic_ipc_batt_io_res));
+
+ if (val & (1 << 7))
+ r = SIMATIC_IPC_BATT_LEVEL_EMPTY;
+ else if (val & (1 << 6))
+ r = SIMATIC_IPC_BATT_LEVEL_CRIT;
+
+ return r;
+}
+
+static long simatic_ipc_batt_read_value(struct device *dev)
+{
+ unsigned long next_update;
+
+ next_update = priv.last_updated_jiffies + msecs_to_jiffies(BATT_DELAY_MS);
+ if (time_after(jiffies, next_update) || !priv.last_updated_jiffies) {
+ switch (priv.devmode) {
+ case SIMATIC_IPC_DEVICE_127E:
+ case SIMATIC_IPC_DEVICE_227G:
+ case SIMATIC_IPC_DEVICE_BX_39A:
+ priv.current_state = simatic_ipc_batt_read_gpio();
+ break;
+ case SIMATIC_IPC_DEVICE_227E:
+ priv.current_state = simatic_ipc_batt_read_io(dev);
+ break;
+ }
+ priv.last_updated_jiffies = jiffies;
+ if (priv.current_state < SIMATIC_IPC_BATT_LEVEL_FULL)
+ dev_warn(dev, "CMOS battery needs to be replaced.");
+ }
+
+ return priv.current_state;
+}
+
+static int simatic_ipc_batt_read(struct device *dev, enum hwmon_sensor_types type,
+ u32 attr, int channel, long *val)
+{
+ switch (attr) {
+ case hwmon_in_input:
+ *val = simatic_ipc_batt_read_value(dev);
+ break;
+ case hwmon_in_lcrit:
+ *val = SIMATIC_IPC_BATT_LEVEL_CRIT;
+ break;
+ default:
+ return -EOPNOTSUPP;
+ }
+
+ return 0;
+}
+
+static umode_t simatic_ipc_batt_is_visible(const void *data, enum hwmon_sensor_types type,
+ u32 attr, int channel)
+{
+ if (attr == hwmon_in_input || attr == hwmon_in_lcrit)
+ return 0444;
+
+ return 0;
+}
+
+static const struct hwmon_ops simatic_ipc_batt_ops = {
+ .is_visible = simatic_ipc_batt_is_visible,
+ .read = simatic_ipc_batt_read,
+};
+
+static const struct hwmon_channel_info *simatic_ipc_batt_info[] = {
+ HWMON_CHANNEL_INFO(in, HWMON_I_INPUT | HWMON_I_LCRIT),
+ NULL
+};
+
+static const struct hwmon_chip_info simatic_ipc_batt_chip_info = {
+ .ops = &simatic_ipc_batt_ops,
+ .info = simatic_ipc_batt_info,
+};
+
+int simatic_ipc_batt_remove(struct platform_device *pdev, struct gpiod_lookup_table *table)
+{
+ gpiod_remove_lookup_table(table);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(simatic_ipc_batt_remove);
+
+int simatic_ipc_batt_probe(struct platform_device *pdev, struct gpiod_lookup_table *table)
+{
+ struct simatic_ipc_platform *plat;
+ struct device *dev = &pdev->dev;
+ struct device *hwmon_dev;
+ int err;
+
+ plat = pdev->dev.platform_data;
+ priv.devmode = plat->devmode;
+
+ switch (priv.devmode) {
+ case SIMATIC_IPC_DEVICE_127E:
+ case SIMATIC_IPC_DEVICE_227G:
+ case SIMATIC_IPC_DEVICE_BX_39A:
+ case SIMATIC_IPC_DEVICE_BX_21A:
+ table->dev_id = dev_name(dev);
+ gpiod_add_lookup_table(table);
+ break;
+ case SIMATIC_IPC_DEVICE_227E:
+ goto nogpio;
+ default:
+ return -ENODEV;
+ }
+
+ priv.gpios[0] = devm_gpiod_get_index(dev, "CMOSBattery empty", 0, GPIOD_IN);
+ if (IS_ERR(priv.gpios[0])) {
+ err = PTR_ERR(priv.gpios[0]);
+ priv.gpios[0] = NULL;
+ goto out;
+ }
+ priv.gpios[1] = devm_gpiod_get_index(dev, "CMOSBattery low", 1, GPIOD_IN);
+ if (IS_ERR(priv.gpios[1])) {
+ err = PTR_ERR(priv.gpios[1]);
+ priv.gpios[1] = NULL;
+ goto out;
+ }
+
+ if (table->table[2].key) {
+ priv.gpios[2] = devm_gpiod_get_index(dev, "CMOSBattery meter", 2, GPIOD_OUT_HIGH);
+ if (IS_ERR(priv.gpios[2])) {
+ err = PTR_ERR(priv.gpios[1]);
+ priv.gpios[2] = NULL;
+ goto out;
+ }
+ } else {
+ priv.gpios[2] = NULL;
+ }
+
+nogpio:
+ hwmon_dev = devm_hwmon_device_register_with_info(dev, KBUILD_MODNAME,
+ &priv,
+ &simatic_ipc_batt_chip_info,
+ NULL);
+ if (IS_ERR(hwmon_dev)) {
+ err = PTR_ERR(hwmon_dev);
+ goto out;
+ }
+
+ /* warn about aging battery even if userspace never reads hwmon */
+ simatic_ipc_batt_read_value(dev);
+
+ return 0;
+out:
+ simatic_ipc_batt_remove(pdev, table);
+
+ return err;
+}
+EXPORT_SYMBOL_GPL(simatic_ipc_batt_probe);
+
+static int simatic_ipc_batt_io_remove(struct platform_device *pdev)
+{
+ return simatic_ipc_batt_remove(pdev, NULL);
+}
+
+static int simatic_ipc_batt_io_probe(struct platform_device *pdev)
+{
+ return simatic_ipc_batt_probe(pdev, NULL);
+}
+
+static struct platform_driver simatic_ipc_batt_driver = {
+ .probe = simatic_ipc_batt_io_probe,
+ .remove = simatic_ipc_batt_io_remove,
+ .driver = {
+ .name = KBUILD_MODNAME,
+ },
+};
+
+module_platform_driver(simatic_ipc_batt_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:" KBUILD_MODNAME);
+MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Siemens SIMATIC IPC driver for CMOS battery monitoring
+ *
+ * Copyright (c) Siemens AG, 2023
+ *
+ * Author:
+ * Henning Schild <henning.schild@siemens.com>
+ */
+
+#ifndef _SIMATIC_IPC_BATT_H
+#define _SIMATIC_IPC_BATT_H
+
+int simatic_ipc_batt_probe(struct platform_device *pdev,
+ struct gpiod_lookup_table *table);
+
+int simatic_ipc_batt_remove(struct platform_device *pdev,
+ struct gpiod_lookup_table *table);
+
+#endif /* _SIMATIC_IPC_BATT_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Siemens SIMATIC IPC platform driver
+ *
+ * Copyright (c) Siemens AG, 2018-2023
+ *
+ * Authors:
+ * Henning Schild <henning.schild@siemens.com>
+ * Jan Kiszka <jan.kiszka@siemens.com>
+ * Gerd Haeussler <gerd.haeussler.ext@siemens.com>
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/dmi.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_data/x86/simatic-ipc.h>
+#include <linux/platform_device.h>
+
+static struct platform_device *ipc_led_platform_device;
+static struct platform_device *ipc_wdt_platform_device;
+static struct platform_device *ipc_batt_platform_device;
+
+static const struct dmi_system_id simatic_ipc_whitelist[] = {
+ {
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "SIEMENS AG"),
+ },
+ },
+ {}
+};
+
+static struct simatic_ipc_platform platform_data;
+
+#define SIMATIC_IPC_MAX_EXTRA_MODULES 2
+
+static struct {
+ u32 station_id;
+ u8 led_mode;
+ u8 wdt_mode;
+ u8 batt_mode;
+ char *extra_modules[SIMATIC_IPC_MAX_EXTRA_MODULES];
+} device_modes[] = {
+ {SIMATIC_IPC_IPC127E,
+ SIMATIC_IPC_DEVICE_127E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_127E,
+ { "emc1403", NULL }},
+ {SIMATIC_IPC_IPC227D,
+ SIMATIC_IPC_DEVICE_227D, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE,
+ { "emc1403", NULL }},
+ {SIMATIC_IPC_IPC227E,
+ SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E,
+ { "emc1403", NULL }},
+ {SIMATIC_IPC_IPC227G,
+ SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G,
+ { "nct6775", "w83627hf_wdt" }},
+ {SIMATIC_IPC_IPC277G,
+ SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G,
+ { "nct6775", "w83627hf_wdt" }},
+ {SIMATIC_IPC_IPC277E,
+ SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E,
+ { "emc1403", NULL }},
+ {SIMATIC_IPC_IPC427D,
+ SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE,
+ { "emc1403", NULL }},
+ {SIMATIC_IPC_IPC427E,
+ SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE,
+ { "emc1403", NULL }},
+ {SIMATIC_IPC_IPC477E,
+ SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE,
+ { "emc1403", NULL }},
+ {SIMATIC_IPC_IPCBX_39A,
+ SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_39A,
+ { "nct6775", "w83627hf_wdt" }},
+ {SIMATIC_IPC_IPCPX_39A,
+ SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_39A,
+ { "nct6775", "w83627hf_wdt" }},
+ {SIMATIC_IPC_IPCBX_21A,
+ SIMATIC_IPC_DEVICE_BX_21A, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_21A,
+ { "emc1403", NULL }},
+};
+
+static int register_platform_devices(u32 station_id)
+{
+ u8 ledmode = SIMATIC_IPC_DEVICE_NONE;
+ u8 wdtmode = SIMATIC_IPC_DEVICE_NONE;
+ u8 battmode = SIMATIC_IPC_DEVICE_NONE;
+ char *pdevname;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(device_modes); i++) {
+ if (device_modes[i].station_id == station_id) {
+ ledmode = device_modes[i].led_mode;
+ wdtmode = device_modes[i].wdt_mode;
+ battmode = device_modes[i].batt_mode;
+ break;
+ }
+ }
+
+ if (battmode != SIMATIC_IPC_DEVICE_NONE) {
+ pdevname = KBUILD_MODNAME "_batt";
+ if (battmode == SIMATIC_IPC_DEVICE_127E)
+ pdevname = KBUILD_MODNAME "_batt_apollolake";
+ if (battmode == SIMATIC_IPC_DEVICE_BX_21A)
+ pdevname = KBUILD_MODNAME "_batt_elkhartlake";
+ if (battmode == SIMATIC_IPC_DEVICE_227G || battmode == SIMATIC_IPC_DEVICE_BX_39A)
+ pdevname = KBUILD_MODNAME "_batt_f7188x";
+ platform_data.devmode = battmode;
+ ipc_batt_platform_device =
+ platform_device_register_data(NULL, pdevname,
+ PLATFORM_DEVID_NONE, &platform_data,
+ sizeof(struct simatic_ipc_platform));
+ if (IS_ERR(ipc_batt_platform_device))
+ return PTR_ERR(ipc_batt_platform_device);
+
+ pr_debug("device=%s created\n",
+ ipc_batt_platform_device->name);
+ }
+
+ if (ledmode != SIMATIC_IPC_DEVICE_NONE) {
+ pdevname = KBUILD_MODNAME "_leds";
+ if (ledmode == SIMATIC_IPC_DEVICE_127E)
+ pdevname = KBUILD_MODNAME "_leds_gpio_apollolake";
+ if (ledmode == SIMATIC_IPC_DEVICE_227G)
+ pdevname = KBUILD_MODNAME "_leds_gpio_f7188x";
+ if (ledmode == SIMATIC_IPC_DEVICE_BX_21A)
+ pdevname = KBUILD_MODNAME "_leds_gpio_elkhartlake";
+ platform_data.devmode = ledmode;
+ ipc_led_platform_device =
+ platform_device_register_data(NULL,
+ pdevname, PLATFORM_DEVID_NONE,
+ &platform_data,
+ sizeof(struct simatic_ipc_platform));
+ if (IS_ERR(ipc_led_platform_device))
+ return PTR_ERR(ipc_led_platform_device);
+
+ pr_debug("device=%s created\n",
+ ipc_led_platform_device->name);
+ }
+
+ if (wdtmode != SIMATIC_IPC_DEVICE_NONE) {
+ platform_data.devmode = wdtmode;
+ ipc_wdt_platform_device =
+ platform_device_register_data(NULL,
+ KBUILD_MODNAME "_wdt", PLATFORM_DEVID_NONE,
+ &platform_data,
+ sizeof(struct simatic_ipc_platform));
+ if (IS_ERR(ipc_wdt_platform_device))
+ return PTR_ERR(ipc_wdt_platform_device);
+
+ pr_debug("device=%s created\n",
+ ipc_wdt_platform_device->name);
+ }
+
+ if (ledmode == SIMATIC_IPC_DEVICE_NONE &&
+ wdtmode == SIMATIC_IPC_DEVICE_NONE &&
+ battmode == SIMATIC_IPC_DEVICE_NONE) {
+ pr_warn("unsupported IPC detected, station id=%08x\n",
+ station_id);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void request_additional_modules(u32 station_id)
+{
+ char **extra_modules = NULL;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(device_modes); i++) {
+ if (device_modes[i].station_id == station_id) {
+ extra_modules = device_modes[i].extra_modules;
+ break;
+ }
+ }
+
+ if (!extra_modules)
+ return;
+
+ for (i = 0; i < SIMATIC_IPC_MAX_EXTRA_MODULES; i++) {
+ if (extra_modules[i])
+ request_module(extra_modules[i]);
+ else
+ break;
+ }
+}
+
+static int __init simatic_ipc_init_module(void)
+{
+ const struct dmi_system_id *match;
+ u32 station_id;
+ int err;
+
+ match = dmi_first_match(simatic_ipc_whitelist);
+ if (!match)
+ return 0;
+
+ err = dmi_walk(simatic_ipc_find_dmi_entry_helper, &station_id);
+
+ if (err || station_id == SIMATIC_IPC_INVALID_STATION_ID) {
+ pr_warn("DMI entry %d not found\n", SIMATIC_IPC_DMI_ENTRY_OEM);
+ return 0;
+ }
+
+ request_additional_modules(station_id);
+
+ return register_platform_devices(station_id);
+}
+
+static void __exit simatic_ipc_exit_module(void)
+{
+ platform_device_unregister(ipc_led_platform_device);
+ ipc_led_platform_device = NULL;
+
+ platform_device_unregister(ipc_wdt_platform_device);
+ ipc_wdt_platform_device = NULL;
+
+ platform_device_unregister(ipc_batt_platform_device);
+ ipc_batt_platform_device = NULL;
+}
+
+module_init(simatic_ipc_init_module);
+module_exit(simatic_ipc_exit_module);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Gerd Haeussler <gerd.haeussler.ext@siemens.com>");
+MODULE_ALIAS("dmi:*:svnSIEMENSAG:*");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Siemens SIMATIC IPC driver for CMOS battery monitoring
- *
- * Copyright (c) Siemens AG, 2023
- *
- * Authors:
- * Henning Schild <henning.schild@siemens.com>
- */
-
-#include <linux/gpio/machine.h>
-#include <linux/gpio/consumer.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-
-#include "simatic-ipc-batt.h"
-
-static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_127e = {
- .table = {
- GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 55, NULL, 0, GPIO_ACTIVE_HIGH),
- GPIO_LOOKUP_IDX("apollolake-pinctrl.0", 61, NULL, 1, GPIO_ACTIVE_HIGH),
- GPIO_LOOKUP_IDX("apollolake-pinctrl.1", 41, NULL, 2, GPIO_ACTIVE_HIGH),
- {} /* Terminating entry */
- },
-};
-
-static int simatic_ipc_batt_apollolake_remove(struct platform_device *pdev)
-{
- return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_127e);
-}
-
-static int simatic_ipc_batt_apollolake_probe(struct platform_device *pdev)
-{
- return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_127e);
-}
-
-static struct platform_driver simatic_ipc_batt_driver = {
- .probe = simatic_ipc_batt_apollolake_probe,
- .remove = simatic_ipc_batt_apollolake_remove,
- .driver = {
- .name = KBUILD_MODNAME,
- },
-};
-
-module_platform_driver(simatic_ipc_batt_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" KBUILD_MODNAME);
-MODULE_SOFTDEP("pre: simatic-ipc-batt platform:apollolake-pinctrl");
-MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Siemens SIMATIC IPC driver for CMOS battery monitoring
- *
- * Copyright (c) Siemens AG, 2023
- *
- * Authors:
- * Henning Schild <henning.schild@siemens.com>
- */
-
-#include <linux/gpio/machine.h>
-#include <linux/gpio/consumer.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-
-#include "simatic-ipc-batt.h"
-
-static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_21a = {
- .table = {
- GPIO_LOOKUP_IDX("INTC1020:04", 18, NULL, 0, GPIO_ACTIVE_HIGH),
- GPIO_LOOKUP_IDX("INTC1020:04", 19, NULL, 1, GPIO_ACTIVE_HIGH),
- GPIO_LOOKUP_IDX("INTC1020:01", 66, NULL, 2, GPIO_ACTIVE_HIGH),
- {} /* Terminating entry */
- },
-};
-
-static int simatic_ipc_batt_elkhartlake_remove(struct platform_device *pdev)
-{
- return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_bx_21a);
-}
-
-static int simatic_ipc_batt_elkhartlake_probe(struct platform_device *pdev)
-{
- return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_bx_21a);
-}
-
-static struct platform_driver simatic_ipc_batt_driver = {
- .probe = simatic_ipc_batt_elkhartlake_probe,
- .remove = simatic_ipc_batt_elkhartlake_remove,
- .driver = {
- .name = KBUILD_MODNAME,
- },
-};
-
-module_platform_driver(simatic_ipc_batt_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" KBUILD_MODNAME);
-MODULE_SOFTDEP("pre: simatic-ipc-batt platform:elkhartlake-pinctrl");
-MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Siemens SIMATIC IPC driver for CMOS battery monitoring
- *
- * Copyright (c) Siemens AG, 2023
- *
- * Authors:
- * Henning Schild <henning.schild@siemens.com>
- */
-
-#include <linux/gpio/machine.h>
-#include <linux/gpio/consumer.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/platform_data/x86/simatic-ipc-base.h>
-
-#include "simatic-ipc-batt.h"
-
-static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_227g = {
- .table = {
- GPIO_LOOKUP_IDX("gpio-f7188x-7", 6, NULL, 0, GPIO_ACTIVE_HIGH),
- GPIO_LOOKUP_IDX("gpio-f7188x-7", 5, NULL, 1, GPIO_ACTIVE_HIGH),
- GPIO_LOOKUP_IDX("INTC1020:01", 66, NULL, 2, GPIO_ACTIVE_HIGH),
- {} /* Terminating entry */
- },
-};
-
-static struct gpiod_lookup_table simatic_ipc_batt_gpio_table_bx_39a = {
- .table = {
- GPIO_LOOKUP_IDX("gpio-f7188x-6", 4, NULL, 0, GPIO_ACTIVE_HIGH),
- GPIO_LOOKUP_IDX("gpio-f7188x-6", 3, NULL, 1, GPIO_ACTIVE_HIGH),
- {} /* Terminating entry */
- },
-};
-
-static int simatic_ipc_batt_f7188x_remove(struct platform_device *pdev)
-{
- const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
-
- if (plat->devmode == SIMATIC_IPC_DEVICE_227G)
- return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_227g);
-
- return simatic_ipc_batt_remove(pdev, &simatic_ipc_batt_gpio_table_bx_39a);
-}
-
-static int simatic_ipc_batt_f7188x_probe(struct platform_device *pdev)
-{
- const struct simatic_ipc_platform *plat = pdev->dev.platform_data;
-
- if (plat->devmode == SIMATIC_IPC_DEVICE_227G)
- return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_227g);
-
- return simatic_ipc_batt_probe(pdev, &simatic_ipc_batt_gpio_table_bx_39a);
-}
-
-static struct platform_driver simatic_ipc_batt_driver = {
- .probe = simatic_ipc_batt_f7188x_probe,
- .remove = simatic_ipc_batt_f7188x_remove,
- .driver = {
- .name = KBUILD_MODNAME,
- },
-};
-
-module_platform_driver(simatic_ipc_batt_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" KBUILD_MODNAME);
-MODULE_SOFTDEP("pre: simatic-ipc-batt gpio_f7188x platform:elkhartlake-pinctrl");
-MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Siemens SIMATIC IPC driver for CMOS battery monitoring
- *
- * Copyright (c) Siemens AG, 2023
- *
- * Authors:
- * Gerd Haeussler <gerd.haeussler.ext@siemens.com>
- * Henning Schild <henning.schild@siemens.com>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/delay.h>
-#include <linux/io.h>
-#include <linux/ioport.h>
-#include <linux/gpio/machine.h>
-#include <linux/gpio/consumer.h>
-#include <linux/hwmon.h>
-#include <linux/hwmon-sysfs.h>
-#include <linux/jiffies.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_device.h>
-#include <linux/platform_data/x86/simatic-ipc-base.h>
-#include <linux/sizes.h>
-
-#include "simatic-ipc-batt.h"
-
-#define BATT_DELAY_MS (1000 * 60 * 60 * 24) /* 24 h delay */
-
-#define SIMATIC_IPC_BATT_LEVEL_FULL 3000
-#define SIMATIC_IPC_BATT_LEVEL_CRIT 2750
-#define SIMATIC_IPC_BATT_LEVEL_EMPTY 0
-
-static struct simatic_ipc_batt {
- u8 devmode;
- long current_state;
- struct gpio_desc *gpios[3];
- unsigned long last_updated_jiffies;
-} priv;
-
-static long simatic_ipc_batt_read_gpio(void)
-{
- long r = SIMATIC_IPC_BATT_LEVEL_FULL;
-
- if (priv.gpios[2]) {
- gpiod_set_value(priv.gpios[2], 1);
- msleep(150);
- }
-
- if (gpiod_get_value_cansleep(priv.gpios[0]))
- r = SIMATIC_IPC_BATT_LEVEL_EMPTY;
- else if (gpiod_get_value_cansleep(priv.gpios[1]))
- r = SIMATIC_IPC_BATT_LEVEL_CRIT;
-
- if (priv.gpios[2])
- gpiod_set_value(priv.gpios[2], 0);
-
- return r;
-}
-
-#define SIMATIC_IPC_BATT_PORT_BASE 0x404D
-static struct resource simatic_ipc_batt_io_res =
- DEFINE_RES_IO_NAMED(SIMATIC_IPC_BATT_PORT_BASE, SZ_1, KBUILD_MODNAME);
-
-static long simatic_ipc_batt_read_io(struct device *dev)
-{
- long r = SIMATIC_IPC_BATT_LEVEL_FULL;
- struct resource *res = &simatic_ipc_batt_io_res;
- u8 val;
-
- if (!request_muxed_region(res->start, resource_size(res), res->name)) {
- dev_err(dev, "Unable to register IO resource at %pR\n", res);
- return -EBUSY;
- }
-
- val = inb(SIMATIC_IPC_BATT_PORT_BASE);
- release_region(simatic_ipc_batt_io_res.start, resource_size(&simatic_ipc_batt_io_res));
-
- if (val & (1 << 7))
- r = SIMATIC_IPC_BATT_LEVEL_EMPTY;
- else if (val & (1 << 6))
- r = SIMATIC_IPC_BATT_LEVEL_CRIT;
-
- return r;
-}
-
-static long simatic_ipc_batt_read_value(struct device *dev)
-{
- unsigned long next_update;
-
- next_update = priv.last_updated_jiffies + msecs_to_jiffies(BATT_DELAY_MS);
- if (time_after(jiffies, next_update) || !priv.last_updated_jiffies) {
- switch (priv.devmode) {
- case SIMATIC_IPC_DEVICE_127E:
- case SIMATIC_IPC_DEVICE_227G:
- case SIMATIC_IPC_DEVICE_BX_39A:
- priv.current_state = simatic_ipc_batt_read_gpio();
- break;
- case SIMATIC_IPC_DEVICE_227E:
- priv.current_state = simatic_ipc_batt_read_io(dev);
- break;
- }
- priv.last_updated_jiffies = jiffies;
- if (priv.current_state < SIMATIC_IPC_BATT_LEVEL_FULL)
- dev_warn(dev, "CMOS battery needs to be replaced.");
- }
-
- return priv.current_state;
-}
-
-static int simatic_ipc_batt_read(struct device *dev, enum hwmon_sensor_types type,
- u32 attr, int channel, long *val)
-{
- switch (attr) {
- case hwmon_in_input:
- *val = simatic_ipc_batt_read_value(dev);
- break;
- case hwmon_in_lcrit:
- *val = SIMATIC_IPC_BATT_LEVEL_CRIT;
- break;
- default:
- return -EOPNOTSUPP;
- }
-
- return 0;
-}
-
-static umode_t simatic_ipc_batt_is_visible(const void *data, enum hwmon_sensor_types type,
- u32 attr, int channel)
-{
- if (attr == hwmon_in_input || attr == hwmon_in_lcrit)
- return 0444;
-
- return 0;
-}
-
-static const struct hwmon_ops simatic_ipc_batt_ops = {
- .is_visible = simatic_ipc_batt_is_visible,
- .read = simatic_ipc_batt_read,
-};
-
-static const struct hwmon_channel_info *simatic_ipc_batt_info[] = {
- HWMON_CHANNEL_INFO(in, HWMON_I_INPUT | HWMON_I_LCRIT),
- NULL
-};
-
-static const struct hwmon_chip_info simatic_ipc_batt_chip_info = {
- .ops = &simatic_ipc_batt_ops,
- .info = simatic_ipc_batt_info,
-};
-
-int simatic_ipc_batt_remove(struct platform_device *pdev, struct gpiod_lookup_table *table)
-{
- gpiod_remove_lookup_table(table);
- return 0;
-}
-EXPORT_SYMBOL_GPL(simatic_ipc_batt_remove);
-
-int simatic_ipc_batt_probe(struct platform_device *pdev, struct gpiod_lookup_table *table)
-{
- struct simatic_ipc_platform *plat;
- struct device *dev = &pdev->dev;
- struct device *hwmon_dev;
- int err;
-
- plat = pdev->dev.platform_data;
- priv.devmode = plat->devmode;
-
- switch (priv.devmode) {
- case SIMATIC_IPC_DEVICE_127E:
- case SIMATIC_IPC_DEVICE_227G:
- case SIMATIC_IPC_DEVICE_BX_39A:
- case SIMATIC_IPC_DEVICE_BX_21A:
- table->dev_id = dev_name(dev);
- gpiod_add_lookup_table(table);
- break;
- case SIMATIC_IPC_DEVICE_227E:
- goto nogpio;
- default:
- return -ENODEV;
- }
-
- priv.gpios[0] = devm_gpiod_get_index(dev, "CMOSBattery empty", 0, GPIOD_IN);
- if (IS_ERR(priv.gpios[0])) {
- err = PTR_ERR(priv.gpios[0]);
- priv.gpios[0] = NULL;
- goto out;
- }
- priv.gpios[1] = devm_gpiod_get_index(dev, "CMOSBattery low", 1, GPIOD_IN);
- if (IS_ERR(priv.gpios[1])) {
- err = PTR_ERR(priv.gpios[1]);
- priv.gpios[1] = NULL;
- goto out;
- }
-
- if (table->table[2].key) {
- priv.gpios[2] = devm_gpiod_get_index(dev, "CMOSBattery meter", 2, GPIOD_OUT_HIGH);
- if (IS_ERR(priv.gpios[2])) {
- err = PTR_ERR(priv.gpios[1]);
- priv.gpios[2] = NULL;
- goto out;
- }
- } else {
- priv.gpios[2] = NULL;
- }
-
-nogpio:
- hwmon_dev = devm_hwmon_device_register_with_info(dev, KBUILD_MODNAME,
- &priv,
- &simatic_ipc_batt_chip_info,
- NULL);
- if (IS_ERR(hwmon_dev)) {
- err = PTR_ERR(hwmon_dev);
- goto out;
- }
-
- /* warn about aging battery even if userspace never reads hwmon */
- simatic_ipc_batt_read_value(dev);
-
- return 0;
-out:
- simatic_ipc_batt_remove(pdev, table);
-
- return err;
-}
-EXPORT_SYMBOL_GPL(simatic_ipc_batt_probe);
-
-static int simatic_ipc_batt_io_remove(struct platform_device *pdev)
-{
- return simatic_ipc_batt_remove(pdev, NULL);
-}
-
-static int simatic_ipc_batt_io_probe(struct platform_device *pdev)
-{
- return simatic_ipc_batt_probe(pdev, NULL);
-}
-
-static struct platform_driver simatic_ipc_batt_driver = {
- .probe = simatic_ipc_batt_io_probe,
- .remove = simatic_ipc_batt_io_remove,
- .driver = {
- .name = KBUILD_MODNAME,
- },
-};
-
-module_platform_driver(simatic_ipc_batt_driver);
-
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:" KBUILD_MODNAME);
-MODULE_AUTHOR("Henning Schild <henning.schild@siemens.com>");
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Siemens SIMATIC IPC driver for CMOS battery monitoring
- *
- * Copyright (c) Siemens AG, 2023
- *
- * Author:
- * Henning Schild <henning.schild@siemens.com>
- */
-
-#ifndef _SIMATIC_IPC_BATT_H
-#define _SIMATIC_IPC_BATT_H
-
-int simatic_ipc_batt_probe(struct platform_device *pdev,
- struct gpiod_lookup_table *table);
-
-int simatic_ipc_batt_remove(struct platform_device *pdev,
- struct gpiod_lookup_table *table);
-
-#endif /* _SIMATIC_IPC_BATT_H */
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Siemens SIMATIC IPC platform driver
- *
- * Copyright (c) Siemens AG, 2018-2023
- *
- * Authors:
- * Henning Schild <henning.schild@siemens.com>
- * Jan Kiszka <jan.kiszka@siemens.com>
- * Gerd Haeussler <gerd.haeussler.ext@siemens.com>
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/dmi.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/platform_data/x86/simatic-ipc.h>
-#include <linux/platform_device.h>
-
-static struct platform_device *ipc_led_platform_device;
-static struct platform_device *ipc_wdt_platform_device;
-static struct platform_device *ipc_batt_platform_device;
-
-static const struct dmi_system_id simatic_ipc_whitelist[] = {
- {
- .matches = {
- DMI_MATCH(DMI_SYS_VENDOR, "SIEMENS AG"),
- },
- },
- {}
-};
-
-static struct simatic_ipc_platform platform_data;
-
-#define SIMATIC_IPC_MAX_EXTRA_MODULES 2
-
-static struct {
- u32 station_id;
- u8 led_mode;
- u8 wdt_mode;
- u8 batt_mode;
- char *extra_modules[SIMATIC_IPC_MAX_EXTRA_MODULES];
-} device_modes[] = {
- {SIMATIC_IPC_IPC127E,
- SIMATIC_IPC_DEVICE_127E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_127E,
- { "emc1403", NULL }},
- {SIMATIC_IPC_IPC227D,
- SIMATIC_IPC_DEVICE_227D, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE,
- { "emc1403", NULL }},
- {SIMATIC_IPC_IPC227E,
- SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E,
- { "emc1403", NULL }},
- {SIMATIC_IPC_IPC227G,
- SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G,
- { "nct6775", "w83627hf_wdt" }},
- {SIMATIC_IPC_IPC277G,
- SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227G,
- { "nct6775", "w83627hf_wdt" }},
- {SIMATIC_IPC_IPC277E,
- SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_227E, SIMATIC_IPC_DEVICE_227E,
- { "emc1403", NULL }},
- {SIMATIC_IPC_IPC427D,
- SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE,
- { "emc1403", NULL }},
- {SIMATIC_IPC_IPC427E,
- SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE,
- { "emc1403", NULL }},
- {SIMATIC_IPC_IPC477E,
- SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_427E, SIMATIC_IPC_DEVICE_NONE,
- { "emc1403", NULL }},
- {SIMATIC_IPC_IPCBX_39A,
- SIMATIC_IPC_DEVICE_227G, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_39A,
- { "nct6775", "w83627hf_wdt" }},
- {SIMATIC_IPC_IPCPX_39A,
- SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_39A,
- { "nct6775", "w83627hf_wdt" }},
- {SIMATIC_IPC_IPCBX_21A,
- SIMATIC_IPC_DEVICE_BX_21A, SIMATIC_IPC_DEVICE_NONE, SIMATIC_IPC_DEVICE_BX_21A,
- { "emc1403", NULL }},
-};
-
-static int register_platform_devices(u32 station_id)
-{
- u8 ledmode = SIMATIC_IPC_DEVICE_NONE;
- u8 wdtmode = SIMATIC_IPC_DEVICE_NONE;
- u8 battmode = SIMATIC_IPC_DEVICE_NONE;
- char *pdevname;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(device_modes); i++) {
- if (device_modes[i].station_id == station_id) {
- ledmode = device_modes[i].led_mode;
- wdtmode = device_modes[i].wdt_mode;
- battmode = device_modes[i].batt_mode;
- break;
- }
- }
-
- if (battmode != SIMATIC_IPC_DEVICE_NONE) {
- pdevname = KBUILD_MODNAME "_batt";
- if (battmode == SIMATIC_IPC_DEVICE_127E)
- pdevname = KBUILD_MODNAME "_batt_apollolake";
- if (battmode == SIMATIC_IPC_DEVICE_BX_21A)
- pdevname = KBUILD_MODNAME "_batt_elkhartlake";
- if (battmode == SIMATIC_IPC_DEVICE_227G || battmode == SIMATIC_IPC_DEVICE_BX_39A)
- pdevname = KBUILD_MODNAME "_batt_f7188x";
- platform_data.devmode = battmode;
- ipc_batt_platform_device =
- platform_device_register_data(NULL, pdevname,
- PLATFORM_DEVID_NONE, &platform_data,
- sizeof(struct simatic_ipc_platform));
- if (IS_ERR(ipc_batt_platform_device))
- return PTR_ERR(ipc_batt_platform_device);
-
- pr_debug("device=%s created\n",
- ipc_batt_platform_device->name);
- }
-
- if (ledmode != SIMATIC_IPC_DEVICE_NONE) {
- pdevname = KBUILD_MODNAME "_leds";
- if (ledmode == SIMATIC_IPC_DEVICE_127E)
- pdevname = KBUILD_MODNAME "_leds_gpio_apollolake";
- if (ledmode == SIMATIC_IPC_DEVICE_227G)
- pdevname = KBUILD_MODNAME "_leds_gpio_f7188x";
- if (ledmode == SIMATIC_IPC_DEVICE_BX_21A)
- pdevname = KBUILD_MODNAME "_leds_gpio_elkhartlake";
- platform_data.devmode = ledmode;
- ipc_led_platform_device =
- platform_device_register_data(NULL,
- pdevname, PLATFORM_DEVID_NONE,
- &platform_data,
- sizeof(struct simatic_ipc_platform));
- if (IS_ERR(ipc_led_platform_device))
- return PTR_ERR(ipc_led_platform_device);
-
- pr_debug("device=%s created\n",
- ipc_led_platform_device->name);
- }
-
- if (wdtmode != SIMATIC_IPC_DEVICE_NONE) {
- platform_data.devmode = wdtmode;
- ipc_wdt_platform_device =
- platform_device_register_data(NULL,
- KBUILD_MODNAME "_wdt", PLATFORM_DEVID_NONE,
- &platform_data,
- sizeof(struct simatic_ipc_platform));
- if (IS_ERR(ipc_wdt_platform_device))
- return PTR_ERR(ipc_wdt_platform_device);
-
- pr_debug("device=%s created\n",
- ipc_wdt_platform_device->name);
- }
-
- if (ledmode == SIMATIC_IPC_DEVICE_NONE &&
- wdtmode == SIMATIC_IPC_DEVICE_NONE &&
- battmode == SIMATIC_IPC_DEVICE_NONE) {
- pr_warn("unsupported IPC detected, station id=%08x\n",
- station_id);
- return -EINVAL;
- }
-
- return 0;
-}
-
-static void request_additional_modules(u32 station_id)
-{
- char **extra_modules = NULL;
- int i;
-
- for (i = 0; i < ARRAY_SIZE(device_modes); i++) {
- if (device_modes[i].station_id == station_id) {
- extra_modules = device_modes[i].extra_modules;
- break;
- }
- }
-
- if (!extra_modules)
- return;
-
- for (i = 0; i < SIMATIC_IPC_MAX_EXTRA_MODULES; i++) {
- if (extra_modules[i])
- request_module(extra_modules[i]);
- else
- break;
- }
-}
-
-static int __init simatic_ipc_init_module(void)
-{
- const struct dmi_system_id *match;
- u32 station_id;
- int err;
-
- match = dmi_first_match(simatic_ipc_whitelist);
- if (!match)
- return 0;
-
- err = dmi_walk(simatic_ipc_find_dmi_entry_helper, &station_id);
-
- if (err || station_id == SIMATIC_IPC_INVALID_STATION_ID) {
- pr_warn("DMI entry %d not found\n", SIMATIC_IPC_DMI_ENTRY_OEM);
- return 0;
- }
-
- request_additional_modules(station_id);
-
- return register_platform_devices(station_id);
-}
-
-static void __exit simatic_ipc_exit_module(void)
-{
- platform_device_unregister(ipc_led_platform_device);
- ipc_led_platform_device = NULL;
-
- platform_device_unregister(ipc_wdt_platform_device);
- ipc_wdt_platform_device = NULL;
-
- platform_device_unregister(ipc_batt_platform_device);
- ipc_batt_platform_device = NULL;
-}
-
-module_init(simatic_ipc_init_module);
-module_exit(simatic_ipc_exit_module);
-
-MODULE_LICENSE("GPL v2");
-MODULE_AUTHOR("Gerd Haeussler <gerd.haeussler.ext@siemens.com>");
-MODULE_ALIAS("dmi:*:svnSIEMENSAG:*");
projects / linux.git / commitdiff