Staging: Add the Meilhaus ME-IDS driver package

[safe/jmp/linux-2.6] / drivers / staging / meilhaus / me4600_ext_irq.h

diff --git a/drivers/staging/meilhaus/me4600_ext_irq.h b/drivers/staging/meilhaus/me4600_ext_irq.h
new file mode 100644 (file)
index 0000000..3c7b27f
--- /dev/null
+++ b/drivers/staging/meilhaus/me4600_ext_irq.h
@@ -0,0 +1,78 @@
+/**
+ * @file me4600_ext_irq.h
+ *
+ * @brief Meilhaus ME-4000 external interrupt subdevice class.
+ * @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
+ * @author Guenter Gebhardt
+ */
+
+/*
+ * Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
+ *
+ * This file 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; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ME4600_EXT_IRQ_H_
+#define _ME4600_EXT_IRQ_H_
+
+#include "mesubdevice.h"
+
+#ifdef __KERNEL__
+
+/**
+ * @brief The subdevice class.
+ */
+typedef struct me4600_ext_irq_subdevice {
+       /* Inheritance */
+       me_subdevice_t base;                    /**< The subdevice base class. */
+
+       /* Attributes */
+       spinlock_t subdevice_lock;              /**< Spin lock to protect the subdevice from concurrent access. */
+       spinlock_t *ctrl_reg_lock;              /**< Spin lock to protect #ctrl_reg from concurrent access. */
+
+       wait_queue_head_t wait_queue;
+
+       int irq;
+
+       int rised;
+       int value;
+       int count;
+
+       unsigned long ctrl_reg;
+       unsigned long irq_status_reg;
+       unsigned long ext_irq_config_reg;
+       unsigned long ext_irq_value_reg;
+#ifdef MEDEBUG_DEBUG_REG
+       unsigned long reg_base;
+#endif
+} me4600_ext_irq_subdevice_t;
+
+/**
+ * @brief The constructor to generate a external interrupt subdevice instance.
+ *
+ * @param reg_base The register base address of the device as returned by the PCI BIOS.
+ * @param irq The interrupt number assigned by the PCI BIOS.
+ * @param ctrl_reg_lock Pointer to spin lock protecting the control register from concurrent access.
+ *
+ * @return Pointer to new instance on success.\n
+ * NULL on error.
+ */
+me4600_ext_irq_subdevice_t *me4600_ext_irq_constructor(uint32_t reg_base,
+                                                      int irq,
+                                                      spinlock_t *
+                                                      ctrl_reg_lock);
+
+#endif
+#endif