// SPDX-License-Identifier: GPL-2.0-only
/*
* Kontron PLD MFD core driver
*
* Copyright (c) 2010-2013 Kontron Europe GmbH
* Author: Michael Brunner <[email protected]>
*/
#include <linux/err.h>
#include <linux/platform_device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/kempld.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/property.h>
#include <linux/dmi.h>
#include <linux/io.h>
#include <linux/delay.h>
#include <linux/sysfs.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)
usleep_range(1000, 3000);
}
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 const char *kempld_dev_names[] = {
[KEMPLD_I2C] = "kempld-i2c",
[KEMPLD_WDT] = "kempld-wdt",
[KEMPLD_GPIO] = "kempld-gpio",
[KEMPLD_UART] = "kempld-uart",
};
#define KEMPLD_MAX_DEVS ARRAY_SIZE(kempld_dev_names)
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++].name = kempld_dev_names[KEMPLD_I2C];
if (pld->feature_mask & KEMPLD_FEATURE_BIT_WATCHDOG)
devs[i++].name = kempld_dev_names[KEMPLD_WDT];
if (pld->feature_mask & KEMPLD_FEATURE_BIT_GPIO)
devs[i++].name = kempld_dev_names[KEMPLD_GPIO];
if (pld->feature_mask & KEMPLD_FEATURE_MASK_UART)
devs[i++].name = kempld_dev_names[KEMPLD_UART];
return mfd_add_devices(pld->dev, PLATFORM_DEVID_NONE, 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 kempld_platform_data *pdata)
{
const struct platform_device_info pdevinfo = {
.name = "kempld",
.id = PLATFORM_DEVID_NONE,
.res = pdata->ioresource,
.num_res = 1,
.data = pdata,
.size_data = sizeof(*pdata),
};
kempld_pdev = platform_device_register_full(&pdevinfo);
if (IS_ERR(kempld_pdev))
return PTR_ERR(kempld_pdev);
return 0;
}
/**
* 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)
{
const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
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)
{
const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
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)
{
int ret;
const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
char major, minor;
ret = pdata->get_info(pld);
if (ret)
return ret;
/* The Kontron PLD firmware version string has the following format:
* Pwxy.zzzz
* P: Fixed
* w: PLD number - 1 hex digit
* x: Major version - 1 alphanumerical digit (0-9A-V)
* y: Minor version - 1 alphanumerical digit (0-9A-V)
* zzzz: Build number - 4 zero padded hex digits */
if (pld->info.major < 10)
major = pld->info.major + '0';
else
major = (pld->info.major - 10) + 'A';
if (pld->info.minor < 10)
minor = pld->info.minor + '0';
else
minor = (pld->info.minor - 10) + 'A';
scnprintf(pld->info.version, sizeof(pld->info.version), "P%X%c%c.%04X",
pld->info.number, major, minor, pld->info.buildnr);
return 0;
}
/*
* 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)
{
const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
return pdata->register_cells(pld);
}
static const char *kempld_get_type_string(struct kempld_device_data *pld)
{
const char *version_type;
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";
break;
}
return version_type;
}
static ssize_t pld_version_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct kempld_device_data *pld = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", pld->info.version);
}
static ssize_t pld_specification_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct kempld_device_data *pld = dev_get_drvdata(dev);
return sysfs_emit(buf, "%d.%d\n", pld->info.spec_major, pld->info.spec_minor);
}
static ssize_t pld_type_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct kempld_device_data *pld = dev_get_drvdata(dev);
return sysfs_emit(buf, "%s\n", kempld_get_type_string(pld));
}
static DEVICE_ATTR_RO(pld_version);
static DEVICE_ATTR_RO(pld_specification);
static DEVICE_ATTR_RO(pld_type);
static struct attribute *pld_attrs[] = {
&dev_attr_pld_version.attr,
&dev_attr_pld_specification.attr,
&dev_attr_pld_type.attr,
NULL
};
ATTRIBUTE_GROUPS(pld);
static int kempld_detect_device(struct kempld_device_data *pld)
{
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 acquired */
if (!(index_reg & KEMPLD_MUTEX_KEY)) {
iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
/* PXT and COMe-cPC2 boards may require a second release */
iowrite8(KEMPLD_MUTEX_KEY, pld->io_index);
}
mutex_unlock(&pld->lock);
ret = kempld_get_info(pld);
if (ret)
return ret;
dev_info(pld->dev, "Found Kontron PLD - %s (%s), spec %d.%d\n",
pld->info.version, kempld_get_type_string(pld),
pld->info.spec_major, pld->info.spec_minor);
return kempld_register_cells(pld);
}
static int kempld_probe(struct platform_device *pdev)
{
const struct kempld_platform_data *pdata;
struct device *dev = &pdev->dev;
struct kempld_device_data *pld;
struct resource *ioport;
int ret;
if (IS_ERR_OR_NULL(kempld_pdev)) {
/*
* No kempld_pdev device has been registered in kempld_init,
* so we seem to be probing an ACPI platform device.
*/
pdata = device_get_match_data(dev);
if (!pdata)
return -ENODEV;
ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
if (ret)
return ret;
} else if (kempld_pdev == pdev) {
pdata = dev_get_platdata(dev);
} else {
/*
* The platform device we are probing is not the one we
* registered in kempld_init using the DMI table, so this one
* comes from ACPI.
* As we can only probe one - abort here and use the DMI
* based one instead.
*/
dev_notice(dev, "platform device exists - not using ACPI\n");
return -ENODEV;
}
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,
resource_size(ioport));
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);
return kempld_detect_device(pld);
}
static void kempld_remove(struct platform_device *pdev)
{
struct kempld_device_data *pld = platform_get_drvdata(pdev);
const struct kempld_platform_data *pdata = dev_get_platdata(pld->dev);
mfd_remove_devices(&pdev->dev);
pdata->release_hardware_mutex(pld);
}
static const struct acpi_device_id kempld_acpi_table[] = {
{ "KEM0000", (kernel_ulong_t)&kempld_platform_data_generic },
{ "KEM0001", (kernel_ulong_t)&kempld_platform_data_generic },
{}
};
MODULE_DEVICE_TABLE(acpi, kempld_acpi_table);
static struct platform_driver kempld_driver = {
.driver = {
.name = "kempld",
.acpi_match_table = kempld_acpi_table,
.dev_groups = pld_groups,
},
.probe = kempld_probe,
.remove_new = kempld_remove,
};
static const struct dmi_system_id kempld_dmi_table[] __initconst = {
{
.ident = "BBD6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bBD"),
},
}, {
.ident = "BBL6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bBL6"),
},
}, {
.ident = "BDV7",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bDV7"),
},
}, {
.ident = "BHL6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bHL6"),
},
}, {
.ident = "BKL6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bKL6"),
},
}, {
.ident = "BSL6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bSL6"),
},
}, {
.ident = "CAL6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cAL"),
},
}, {
.ident = "CBL6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cBL6"),
},
}, {
.ident = "CBW6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cBW6"),
},
}, {
.ident = "CCR2",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP2"),
},
}, {
.ident = "CCR6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bIP6"),
},
}, {
.ident = "CDV7",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cDV7"),
},
}, {
.ident = "CHL6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cHL6"),
},
}, {
.ident = "CHR2",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T2"),
},
}, {
.ident = "CHR2",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T2"),
},
}, {
.ident = "CHR2",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC2"),
},
}, {
.ident = "CHR6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-SC T6"),
},
}, {
.ident = "CHR6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "ETXe-SC T6"),
},
}, {
.ident = "CHR6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bSC6"),
},
}, {
.ident = "CKL6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cKL6"),
},
}, {
.ident = "CNTG",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "ETXexpress-PC"),
},
}, {
.ident = "CNTG",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-bPC2"),
},
}, {
.ident = "CNTX",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "PXT"),
},
}, {
.ident = "CSL6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cSL6"),
},
}, {
.ident = "CVV6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cBT"),
},
}, {
.ident = "FRI2",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BIOS_VERSION, "FRI2"),
},
}, {
.ident = "FRI2",
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "Fish River Island II"),
},
}, {
.ident = "A203",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "KBox A-203"),
},
}, {
.ident = "M4A1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-m4AL"),
},
}, {
.ident = "MAL1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-mAL10"),
},
}, {
.ident = "MAPL",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "mITX-APL"),
},
}, {
.ident = "MBR1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "ETX-OH"),
},
}, {
.ident = "MVV1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-mBT"),
},
}, {
.ident = "NTC1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "nanoETXexpress-TT"),
},
}, {
.ident = "NTC1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "nETXe-TT"),
},
}, {
.ident = "NTC1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-mTT"),
},
}, {
.ident = "NUP1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-mCT"),
},
}, {
.ident = "PAPL",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "pITX-APL"),
},
}, {
.ident = "SXAL",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "SMARC-sXAL"),
},
}, {
.ident = "SXAL4",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "SMARC-sXA4"),
},
}, {
.ident = "UNP1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-DC"),
},
}, {
.ident = "UNP1",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cDC2"),
},
}, {
.ident = "UNTG",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "microETXexpress-PC"),
},
}, {
.ident = "UNTG",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cPC2"),
},
}, {
.ident = "UUP6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cCT6"),
},
}, {
.ident = "UTH6",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "COMe-cTH6"),
},
}, {
.ident = "Q7AL",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "Kontron"),
DMI_MATCH(DMI_BOARD_NAME, "Qseven-Q7AL"),
},
},
{}
};
MODULE_DEVICE_TABLE(dmi, kempld_dmi_table);
static int __init kempld_init(void)
{
const struct dmi_system_id *id;
int ret = -ENODEV;
for (id = dmi_first_match(kempld_dmi_table); id; id = dmi_first_match(id + 1)) {
/* Check, if user asked for the exact device ID match */
if (force_device_id[0] && !strstr(id->ident, force_device_id))
continue;
ret = kempld_create_platform_device(&kempld_platform_data_generic);
if (ret)
continue;
break;
}
if (ret)
return ret;
return platform_driver_register(&kempld_driver);
}
static void __exit kempld_exit(void)
{
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 <[email protected]>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:kempld-core");
Codebase Browser
linux