kernel:wrs_devices: add platform_device list

The aim of this module is to register all the FPGA devices

Signed-off-by: Federico Vaga <federico.vaga@cern.ch>

kernel/wrs_devices/Kbuild

+ccflags-y += -Werror
+
+obj-m := wrs_devices.o

kernel/wrs_devices/Makefile

+LINUX ?= /lib/modules/$(shell uname -r)/build
+
+all: modules
+modules:
+	$(MAKE) -C $(LINUX) M=$(shell /bin/pwd)
+clean:
+	$(MAKE) -C $(LINUX) M=$(shell /bin/pwd) clean
+gtags:
+	gtags --statistics
+
+.PHONY: all clean gtags

kernel/wrs_devices/wrs_devices.c

+/**
+ * Copyright CERN (c) 2016
+ * Federico Vaga <federico.vaga@cern.ch>
+ * License GPL v2
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+
+#include <mach/at91sam9g45.h>
+/*
+ * Ugly trick to be able to use headers that have been moved out
+ * from mach/ directory
+ */
+#include <mach/../../at91_aic.h>
+#define WR_IS_NODE 0
+#define WR_IS_SWITCH 1
+#include "../wr_nic/nic-hardware.h" /* Magic numbers: please fix them as needed */
+
+
+#define FPGA_BASE_WRVIC	0x10050000
+#define FPGA_SIZE_WRVIC	0x00001000
+
+static struct resource wrs_vic_resources[] = {
+	[0] = {
+		.start	= FPGA_BASE_WRVIC,
+		.end	= FPGA_BASE_WRVIC + FPGA_SIZE_WRVIC - 1,
+		.flags	= IORESOURCE_MEM,
+	},
+	[1] = {
+		.start	= NR_IRQS_LEGACY + AT91SAM9G45_ID_IRQ0,
+		.end	= NR_IRQS_LEGACY + AT91SAM9G45_ID_IRQ0,
+		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHLEVEL,
+		/* FIXME is it really HIGHLEVEL ? */
+	},
+};
+
+static struct platform_device wrs_vic_device = {
+	.name		= "htvic-wr-swi",
+	.id		= 0,
+	.resource	= wrs_vic_resources,
+	.num_resources	= ARRAY_SIZE(wrs_vic_resources),
+};
+
+#if 0
+static struct resource wrs_nic_recources[] = {
+	/* Memory */
+	{
+		.name = "wrs-mem-nic",
+		.start = FPGA_BASE_NIC,
+		.end = FPGA_BASE_NIC + FPGA_SIZE_NIC - 1,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.name = "wrs-mem-ep",
+		.start = FPGA_BASE_EP,
+		.end = FPGA_BASE_EP + FPGA_SIZE_EP - 1,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.name = "wrs-mem-ts",
+		.start = FPGA_BASE_TS,
+		.end = FPGA_BASE_TS + FPGA_SIZE_TS - 1,
+		.flags = IORESOURCE_MEM,
+	}, {
+		.name = "wrs-mem-ppsg",
+		.start = FPGA_BASE_PPSG,
+		.end = FPGA_BASE_PPSG + FPGA_SIZE_PPSG - 1,
+		.flags = IORESOURCE_MEM,
+	},
+	/* IRQ from HTVIC */
+	{
+		.name = "wr-nic-irq",
+		.start = 0,
+		.end = 0,
+		.flags = IORESOURCE_IRQ,
+	}, {
+		.name = "wr-tstamp",
+		.start = 1,
+		.end = 1,
+		.flags = IORESOURCE_IRQ,
+	},
+};
+
+static struct platform_device wrs_nic_device = {
+	.name = "wrs-nic",
+	.id = 0,
+	.resource = wrs_nic_recources,
+	.num_resources = ARRAY_SIZE(wrs_nic_recources),
+};
+#endif
+
+static int wrs_devices_init(void)
+{
+	int err;
+
+	err = platform_device_register(&wrs_vic_device);
+	if (err)
+		return err;
+#if 0 /* perhaps we enable it in the future */
+	err = platform_device_register(&wrs_nic_device);
+	if (err)
+		return err;
+#endif
+	return 0;
+}
+
+static void wrs_devices_exit(void)
+{
+#if 0
+	platform_device_unregister(&wrs_nic_device);
+#endif
+	platform_device_unregister(&wrs_vic_device);
+}
+
+module_init(wrs_devices_init);
+module_exit(wrs_devices_exit);
+
+MODULE_LICENSE("GPL");