3 files changed, 168 insertions, 0 deletions

diff --git a/drivers/mcb/Kconfig b/drivers/mcb/Kconfig
index e9a6976e1010..76d9c51de6c9 100644
--- a/drivers/mcb/Kconfig
+++ b/drivers/mcb/Kconfig
@@ -28,4 +28,13 @@ config MCB_PCI
 
            If build as a module, the module is called mcb-pci.ko
 
+config MCB_LPC
+           tristate "LPC (non PCI) based MCB carrier"
+           default n
+           help
+
+           This is a MCB carrier on a LPC or non PCI device.
+
+           If build as a module, the module is called mcb-lpc.ko
+
 endif # MCB
diff --git a/drivers/mcb/Makefile b/drivers/mcb/Makefile
index 1ae141311def..bcc7745774ab 100644
--- a/drivers/mcb/Makefile
+++ b/drivers/mcb/Makefile
@@ -5,3 +5,4 @@ mcb-y += mcb-core.o
 mcb-y += mcb-parse.o
 
 obj-$(CONFIG_MCB_PCI) += mcb-pci.o
+obj-$(CONFIG_MCB_LPC) += mcb-lpc.o
diff --git a/drivers/mcb/mcb-lpc.c b/drivers/mcb/mcb-lpc.c
new file mode 100644
index 000000000000..d072c088ce73
--- /dev/null
+++ b/drivers/mcb/mcb-lpc.c
@@ -0,0 +1,158 @@
+/*
+ * MEN Chameleon Bus.
+ *
+ * Copyright (C) 2014 MEN Mikroelektronik GmbH (www.men.de)
+ * Author: Andreas Werner <andreas.werner@men.de>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; version 2 of the License.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/dmi.h>
+#include <linux/mcb.h>
+#include <linux/io.h>
+#include "mcb-internal.h"
+
+struct priv {
+        struct mcb_bus *bus;
+        struct resource *mem;
+        void __iomem *base;
+};
+
+static int mcb_lpc_probe(struct platform_device *pdev)
+{
+        struct resource *res;
+        struct priv *priv;
+        int ret = 0;
+
+        priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+        if (!priv)
+                return -ENOMEM;
+
+        priv->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!priv->mem) {
+                dev_err(&pdev->dev, "No Memory resource\n");
+                return -ENODEV;
+        }
+
+        res = devm_request_mem_region(&pdev->dev, priv->mem->start,
+                                      resource_size(priv->mem),
+                                      KBUILD_MODNAME);
+        if (!res) {
+                dev_err(&pdev->dev, "Failed to request IO memory\n");
+                return -EBUSY;
+        }
+
+        priv->base = devm_ioremap(&pdev->dev, priv->mem->start,
+                                  resource_size(priv->mem));
+        if (!priv->base) {
+                dev_err(&pdev->dev, "Cannot ioremap\n");
+                return -ENOMEM;
+        }
+
+        platform_set_drvdata(pdev, priv);
+
+        priv->bus = mcb_alloc_bus(&pdev->dev);
+        if (IS_ERR(priv->bus))
+                return PTR_ERR(priv->bus);
+
+        ret = chameleon_parse_cells(priv->bus, priv->mem->start, priv->base);
+        if (ret < 0) {
+                mcb_release_bus(priv->bus);
+                return ret;
+        }
+
+        dev_dbg(&pdev->dev, "Found %d cells\n", ret);
+
+        mcb_bus_add_devices(priv->bus);
+
+        return 0;
+
+}
+
+static int mcb_lpc_remove(struct platform_device *pdev)
+{
+        struct priv *priv = platform_get_drvdata(pdev);
+
+        mcb_release_bus(priv->bus);
+
+        return 0;
+}
+
+static struct platform_device *mcb_lpc_pdev;
+
+static int mcb_lpc_create_platform_device(const struct dmi_system_id *id)
+{
+        struct resource *res = id->driver_data;
+        int ret;
+
+        mcb_lpc_pdev = platform_device_alloc("mcb-lpc", -1);
+        if (!mcb_lpc_pdev)
+                return -ENOMEM;
+
+        ret = platform_device_add_resources(mcb_lpc_pdev, res, 1);
+        if (ret)
+                goto out_put;
+
+        ret = platform_device_add(mcb_lpc_pdev);
+        if (ret)
+                goto out_put;
+
+        return 0;
+
+out_put:
+        platform_device_put(mcb_lpc_pdev);
+        return ret;
+}
+
+static struct resource sc24_fpga_resource = {
+        .start = 0xe000e000,
+        .end = 0xe000e000 + CHAM_HEADER_SIZE,
+        .flags = IORESOURCE_MEM,
+};
+
+static struct platform_driver mcb_lpc_driver = {
+        .driver         = {
+                .name = "mcb-lpc",
+        },
+        .probe          = mcb_lpc_probe,
+        .remove         = mcb_lpc_remove,
+};
+
+static const struct dmi_system_id mcb_lpc_dmi_table[] = {
+        {
+                .ident = "SC24",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "MEN"),
+                        DMI_MATCH(DMI_PRODUCT_VERSION, "14SC24"),
+                },
+                .driver_data = (void *)&sc24_fpga_resource,
+                .callback = mcb_lpc_create_platform_device,
+        },
+        {}
+};
+MODULE_DEVICE_TABLE(dmi, mcb_lpc_dmi_table);
+
+static int __init mcb_lpc_init(void)
+{
+        if (!dmi_check_system(mcb_lpc_dmi_table))
+                return -ENODEV;
+
+        return platform_driver_register(&mcb_lpc_driver);
+}
+
+static void __exit mcb_lpc_exit(void)
+{
+        platform_device_unregister(mcb_lpc_pdev);
+        platform_driver_unregister(&mcb_lpc_driver);
+}
+
+module_init(mcb_lpc_init);
+module_exit(mcb_lpc_exit);
+
+MODULE_AUTHOR("Andreas Werner <andreas.werner@men.de>");
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("MCB over LPC support");