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-rw-r--r--drivers/mfd/Kconfig21
-rw-r--r--drivers/mfd/Makefile1
-rw-r--r--drivers/mfd/kempld-core.c641
3 files changed, 663 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 3e3be603cf8..3bb2932eafb 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -242,6 +242,27 @@ config MFD_JZ4740_ADC
Say yes here if you want support for the ADC unit in the JZ4740 SoC.
This driver is necessary for jz4740-battery and jz4740-hwmon driver.
+config MFD_KEMPLD
+ tristate "Kontron module PLD device"
+ select MFD_CORE
+ help
+ This is the core driver for the PLD (Programmable Logic Device) found
+ on some Kontron ETX and COMexpress (ETXexpress) modules. The PLD
+ device may provide functions like watchdog, GPIO, UART and I2C bus.
+
+ The following modules are supported:
+ * COMe-bIP#
+ * COMe-bPC2 (ETXexpress-PC)
+ * COMe-bSC# (ETXexpress-SC T#)
+ * COMe-cCT6
+ * COMe-cDC2 (microETXexpress-DC)
+ * COMe-cPC2 (microETXexpress-PC)
+ * COMe-mCT10
+ * ETX-OH
+
+ This driver can also be built as a module. If so, the module
+ will be called kempld-core.
+
config MFD_88PM800
tristate "Marvell 88PM800"
depends on I2C=y && GENERIC_HARDIRQS
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 4d70cdb044e..3c90051ffa5 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -129,6 +129,7 @@ obj-$(CONFIG_MFD_DB8500_PRCMU) += db8500-prcmu.o
obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o
obj-$(CONFIG_MFD_TIMBERDALE) += timberdale.o
obj-$(CONFIG_PMIC_ADP5520) += adp5520.o
+obj-$(CONFIG_MFD_KEMPLD) += kempld-core.o
obj-$(CONFIG_LPC_SCH) += lpc_sch.o
obj-$(CONFIG_LPC_ICH) += lpc_ich.o
obj-$(CONFIG_MFD_RDC321X) += rdc321x-southbridge.o
diff --git a/drivers/mfd/kempld-core.c b/drivers/mfd/kempld-core.c
new file mode 100644
index 00000000000..686a4565acb
--- /dev/null
+++ b/drivers/mfd/kempld-core.c
@@ -0,0 +1,641 @@
+/*
+ * Kontron PLD MFD core driver
+ *
+ * Copyright (c) 2010-2013 Kontron Europe GmbH
+ * Author: Michael Brunner <michael.brunner@kontron.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License 2 as published
+ * by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/mfd/core.h>
+#include <linux/mfd/kempld.h>
+#include <linux/module.h>
+#include <linux/dmi.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+
+#define MAX_ID_LEN 4
+static char force_device_id[MAX_ID_LEN + 1] = "";
+module_param_string(force_device_id, force_device_id, sizeof(force_device_id), 0);
+MODULE_PARM_DESC(force_device_id, "Override detected product");
+
+/*
+ * Get hardware mutex to block firmware from accessing the pld.
+ * It is possible for the firmware may hold the mutex for an extended length of
+ * time. This function will block until access has been granted.
+ */
+static void kempld_get_hardware_mutex(struct kempld_device_data *pld)
+{
+ /* The mutex bit will read 1 until access has been granted */
+ while (ioread8(pld->io_index) & KEMPLD_MUTEX_KEY)
+ msleep(1);
+}
+
+static void kempld_release_hardware_mutex(struct kempld_device_data *pld)
+{
+ /* The harware mutex is released when 1 is written to the mutex bit. */
+ iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
+}
+
+static int kempld_get_info_generic(struct kempld_device_data *pld)
+{
+ u16 version;
+ u8 spec;
+
+ kempld_get_mutex(pld);
+
+ version = kempld_read16(pld, KEMPLD_VERSION);
+ spec = kempld_read8(pld, KEMPLD_SPEC);
+ pld->info.buildnr = kempld_read16(pld, KEMPLD_BUILDNR);
+
+ pld->info.minor = KEMPLD_VERSION_GET_MINOR(version);
+ pld->info.major = KEMPLD_VERSION_GET_MAJOR(version);
+ pld->info.number = KEMPLD_VERSION_GET_NUMBER(version);
+ pld->info.type = KEMPLD_VERSION_GET_TYPE(version);
+
+ if (spec == 0xff) {
+ pld->info.spec_minor = 0;
+ pld->info.spec_major = 1;
+ } else {
+ pld->info.spec_minor = KEMPLD_SPEC_GET_MINOR(spec);
+ pld->info.spec_major = KEMPLD_SPEC_GET_MAJOR(spec);
+ }
+
+ if (pld->info.spec_major > 0)
+ pld->feature_mask = kempld_read16(pld, KEMPLD_FEATURE);
+ else
+ pld->feature_mask = 0;
+
+ kempld_release_mutex(pld);
+
+ return 0;
+}
+
+enum kempld_cells {
+ KEMPLD_I2C = 0,
+ KEMPLD_WDT,
+ KEMPLD_GPIO,
+ KEMPLD_UART,
+};
+
+static struct mfd_cell kempld_devs[] = {
+ [KEMPLD_I2C] = {
+ .name = "kempld-i2c",
+ },
+ [KEMPLD_WDT] = {
+ .name = "kempld-wdt",
+ },
+ [KEMPLD_GPIO] = {
+ .name = "kempld-gpio",
+ },
+ [KEMPLD_UART] = {
+ .name = "kempld-uart",
+ },
+};
+
+#define KEMPLD_MAX_DEVS ARRAY_SIZE(kempld_devs)
+
+static int kempld_register_cells_generic(struct kempld_device_data *pld)
+{
+ struct mfd_cell devs[KEMPLD_MAX_DEVS];
+ int i = 0;
+
+ if (pld->feature_mask & KEMPLD_FEATURE_BIT_I2C)
+ devs[i++] = kempld_devs[KEMPLD_I2C];
+
+ if (pld->feature_mask & KEMPLD_FEATURE_BIT_WATCHDOG)
+ devs[i++] = kempld_devs[KEMPLD_WDT];
+
+ if (pld->feature_mask & KEMPLD_FEATURE_BIT_GPIO)
+ devs[i++] = kempld_devs[KEMPLD_GPIO];
+
+ if (pld->feature_mask & KEMPLD_FEATURE_MASK_UART)
+ devs[i++] = kempld_devs[KEMPLD_UART];
+
+ return mfd_add_devices(pld->dev, -1, devs, i, NULL, 0, NULL);
+}
+
+static struct resource kempld_ioresource = {
+ .start = KEMPLD_IOINDEX,
+ .end = KEMPLD_IODATA,
+ .flags = IORESOURCE_IO,
+};
+
+static const struct kempld_platform_data kempld_platform_data_generic = {
+ .pld_clock = KEMPLD_CLK,
+ .ioresource = &kempld_ioresource,
+ .get_hardware_mutex = kempld_get_hardware_mutex,
+ .release_hardware_mutex = kempld_release_hardware_mutex,
+ .get_info = kempld_get_info_generic,
+ .register_cells = kempld_register_cells_generic,
+};
+
+static struct platform_device *kempld_pdev;
+
+static int kempld_create_platform_device(const struct dmi_system_id *id)
+{
+ struct kempld_platform_data *pdata = id->driver_data;
+ int ret;
+
+ kempld_pdev = platform_device_alloc("kempld", -1);
+ if (!kempld_pdev)
+ return -ENOMEM;
+
+ ret = platform_device_add_data(kempld_pdev, pdata, sizeof(*pdata));
+ if (ret)
+ goto err;
+
+ ret = platform_device_add_resources(kempld_pdev, pdata->ioresource, 1);
+ if (ret)
+ goto err;
+
+ ret = platform_device_add(kempld_pdev);
+ if (ret)
+ goto err;
+
+ return 0;
+err:
+ platform_device_put(kempld_pdev);
+ return ret;
+}
+
+/**
+ * kempld_read8 - read 8 bit register
+ * @pld: kempld_device_data structure describing the PLD
+ * @index: register index on the chip
+ *
+ * kempld_get_mutex must be called prior to calling this function.
+ */
+u8 kempld_read8(struct kempld_device_data *pld, u8 index)
+{
+ iowrite8(index, pld->io_index);
+ return ioread8(pld->io_data);
+}
+EXPORT_SYMBOL_GPL(kempld_read8);
+
+/**
+ * kempld_write8 - write 8 bit register
+ * @pld: kempld_device_data structure describing the PLD
+ * @index: register index on the chip
+ * @data: new register value
+ *
+ * kempld_get_mutex must be called prior to calling this function.
+ */
+void kempld_write8(struct kempld_device_data *pld, u8 index, u8 data)
+{
+ iowrite8(index, pld->io_index);
+ iowrite8(data, pld->io_data);
+}
+EXPORT_SYMBOL_GPL(kempld_write8);
+
+/**
+ * kempld_read16 - read 16 bit register
+ * @pld: kempld_device_data structure describing the PLD
+ * @index: register index on the chip
+ *
+ * kempld_get_mutex must be called prior to calling this function.
+ */
+u16 kempld_read16(struct kempld_device_data *pld, u8 index)
+{
+ return kempld_read8(pld, index) | kempld_read8(pld, index + 1) << 8;
+}
+EXPORT_SYMBOL_GPL(kempld_read16);
+
+/**
+ * kempld_write16 - write 16 bit register
+ * @pld: kempld_device_data structure describing the PLD
+ * @index: register index on the chip
+ * @data: new register value
+ *
+ * kempld_get_mutex must be called prior to calling this function.
+ */
+void kempld_write16(struct kempld_device_data *pld, u8 index, u16 data)
+{
+ kempld_write8(pld, index, (u8)data);
+ kempld_write8(pld, index + 1, (u8)(data >> 8));
+}
+EXPORT_SYMBOL_GPL(kempld_write16);
+
+/**
+ * kempld_read32 - read 32 bit register
+ * @pld: kempld_device_data structure describing the PLD
+ * @index: register index on the chip
+ *
+ * kempld_get_mutex must be called prior to calling this function.
+ */
+u32 kempld_read32(struct kempld_device_data *pld, u8 index)
+{
+ return kempld_read16(pld, index) | kempld_read16(pld, index + 2) << 16;
+}
+EXPORT_SYMBOL_GPL(kempld_read32);
+
+/**
+ * kempld_write32 - write 32 bit register
+ * @pld: kempld_device_data structure describing the PLD
+ * @index: register index on the chip
+ * @data: new register value
+ *
+ * kempld_get_mutex must be called prior to calling this function.
+ */
+void kempld_write32(struct kempld_device_data *pld, u8 index, u32 data)
+{
+ kempld_write16(pld, index, (u16)data);
+ kempld_write16(pld, index + 2, (u16)(data >> 16));
+}
+EXPORT_SYMBOL_GPL(kempld_write32);
+
+/**
+ * kempld_get_mutex - acquire PLD mutex
+ * @pld: kempld_device_data structure describing the PLD
+ */
+void kempld_get_mutex(struct kempld_device_data *pld)
+{
+ struct kempld_platform_data *pdata = pld->dev->platform_data;
+
+ mutex_lock(&pld->lock);
+ pdata->get_hardware_mutex(pld);
+}
+EXPORT_SYMBOL_GPL(kempld_get_mutex);
+
+/**
+ * kempld_release_mutex - release PLD mutex
+ * @pld: kempld_device_data structure describing the PLD
+ */
+void kempld_release_mutex(struct kempld_device_data *pld)
+{
+ struct kempld_platform_data *pdata = pld->dev->platform_data;
+
+ pdata->release_hardware_mutex(pld);
+ mutex_unlock(&pld->lock);
+}
+EXPORT_SYMBOL_GPL(kempld_release_mutex);
+
+/**
+ * kempld_get_info - update device specific information
+ * @pld: kempld_device_data structure describing the PLD
+ *
+ * This function calls the configured board specific kempld_get_info_XXXX
+ * function which is responsible for gathering information about the specific
+ * hardware. The information is then stored within the pld structure.
+ */
+static int kempld_get_info(struct kempld_device_data *pld)
+{
+ struct kempld_platform_data *pdata = pld->dev->platform_data;
+
+ return pdata->get_info(pld);
+}
+
+/*
+ * kempld_register_cells - register cell drivers
+ *
+ * This function registers cell drivers for the detected hardware by calling
+ * the configured kempld_register_cells_XXXX function which is responsible
+ * to detect and register the needed cell drivers.
+ */
+static int kempld_register_cells(struct kempld_device_data *pld)
+{
+ struct kempld_platform_data *pdata = pld->dev->platform_data;
+
+ return pdata->register_cells(pld);
+}
+
+static int kempld_detect_device(struct kempld_device_data *pld)
+{
+ char *version_type;
+ u8 index_reg;
+ int ret;
+
+ mutex_lock(&pld->lock);
+
+ /* Check for empty IO space */
+ index_reg = ioread8(pld->io_index);
+ if (index_reg == 0xff && ioread8(pld->io_data) == 0xff) {
+ mutex_unlock(&pld->lock);
+ return -ENODEV;
+ }
+
+ /* Release hardware mutex if aquired */
+ if (!(index_reg & KEMPLD_MUTEX_KEY))
+ iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
+
+ mutex_unlock(&pld->lock);
+
+ ret = kempld_get_info(pld);
+ if (ret)
+ return ret;
+
+ switch (pld->info.type) {
+ case 0:
+ version_type = "release";
+ break;
+ case 1:
+ version_type = "debug";
+ break;
+ case 2:
+ version_type = "custom";
+ break;
+ default:
+ version_type = "unspecified";
+ }
+
+ dev_info(pld->dev, "Found Kontron PLD %d\n", pld->info.number);
+ dev_info(pld->dev, "%s version %d.%d build %d, specification %d.%d\n",
+ version_type, pld->info.major, pld->info.minor,
+ pld->info.buildnr, pld->info.spec_major,
+ pld->info.spec_minor);
+
+ return kempld_register_cells(pld);
+}
+
+static int kempld_probe(struct platform_device *pdev)
+{
+ struct kempld_platform_data *pdata = pdev->dev.platform_data;
+ struct device *dev = &pdev->dev;
+ struct kempld_device_data *pld;
+ struct resource *ioport;
+ int ret;
+
+ pld = devm_kzalloc(dev, sizeof(*pld), GFP_KERNEL);
+ if (!pld)
+ return -ENOMEM;
+
+ ioport = platform_get_resource(pdev, IORESOURCE_IO, 0);
+ if (!ioport)
+ return -EINVAL;
+
+ pld->io_base = devm_ioport_map(dev, ioport->start,
+ ioport->end - ioport->start);
+ if (!pld->io_base)
+ return -ENOMEM;
+
+ pld->io_index = pld->io_base;
+ pld->io_data = pld->io_base + 1;
+ pld->pld_clock = pdata->pld_clock;
+ pld->dev = dev;
+
+ mutex_init(&pld->lock);
+ platform_set_drvdata(pdev, pld);
+
+ ret = kempld_detect_device(pld);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int kempld_remove(struct platform_device *pdev)
+{
+ struct kempld_device_data *pld = platform_get_drvdata(pdev);
+ struct kempld_platform_data *pdata = pld->dev->platform_data;
+
+ mfd_remove_devices(&pdev->dev);
+ pdata->release_hardware_mutex(pld);
+
+ return 0;
+}
+
+static struct platform_driver kempld_driver = {
+ .driver = {
+ .name = "kempld",
+ .owner = THIS_MODULE,
+ },
+ .probe = kempld_probe,
+ .remove = kempld_remove,
+};
+
+static struct dmi_system_id __initdata kempld_dmi_table[] = {
+ {
+ .ident = "CCR2",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP2"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CCR6",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP6"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CHR2",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T2"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CHR2",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T2"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CHR2",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC2"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CHR6",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T6"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CHR6",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T6"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CHR6",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC6"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CNTG",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-PC"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CNTG",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-bPC2"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "CNTX",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "PXT"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "FRI2",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BIOS_VERSION, "FRI2"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "FRI2",
+ .matches = {
+ DMI_MATCH(DMI_PRODUCT_NAME, "Fish River Island II"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "MBR1",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "ETX-OH"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "NTC1",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "nanoETXexpress-TT"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "NTC1",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "nETXe-TT"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "NTC1",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-mTT"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "NUP1",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-mCT"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "UNP1",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-DC"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "UNP1",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-cDC2"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "UNTG",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-PC"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "UNTG",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-cPC2"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ }, {
+ .ident = "UUP6",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
+ DMI_MATCH(DMI_BOARD_NAME, "COMe-cCT6"),
+ },
+ .driver_data = (void *)&kempld_platform_data_generic,
+ .callback = kempld_create_platform_device,
+ },
+ {}
+};
+MODULE_DEVICE_TABLE(dmi, kempld_dmi_table);
+
+static int __init kempld_init(void)
+{
+ const struct dmi_system_id *id;
+ int ret;
+
+ if (force_device_id[0]) {
+ for (id = kempld_dmi_table; id->matches[0].slot != DMI_NONE; id++)
+ if (strstr(id->ident, force_device_id))
+ if (id->callback && id->callback(id))
+ break;
+ if (id->matches[0].slot == DMI_NONE)
+ return -ENODEV;
+ } else {
+ if (!dmi_check_system(kempld_dmi_table))
+ return -ENODEV;
+ }
+
+ ret = platform_driver_register(&kempld_driver);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void __exit kempld_exit(void)
+{
+ if (kempld_pdev)
+ platform_device_unregister(kempld_pdev);
+
+ platform_driver_unregister(&kempld_driver);
+}
+
+module_init(kempld_init);
+module_exit(kempld_exit);
+
+MODULE_DESCRIPTION("KEM PLD Core Driver");
+MODULE_AUTHOR("Michael Brunner <michael.brunner@kontron.com>");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:kempld-core");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-29 04:55:20 +0000