Staging: Add the Meilhaus ME-IDS driver package

Originally written by Guenter Gebhardt <g.gebhardt@meilhaus.de>
and Krzysztof Gantzke <k.gantzke@meilhaus.de>

This is the drv/lnx/mod directory of ME-IDS 1.2.9 tarball with
some files from drv/lnx/include.

Signed-off-by: David Kiliani <mail@davidkiliani.de>
Cc: Guenter Gebhardt <g.gebhardt@meilhaus.de>
Cc: Krzysztof Gantzke <k.gantzke@meilhaus.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 132 insertions, 0 deletions

diff --git a/drivers/staging/meilhaus/me1600_ao.h b/drivers/staging/meilhaus/me1600_ao.h
new file mode 100644
index 00000000000..b82bf5a1676
--- /dev/null
+++ b/drivers/staging/meilhaus/me1600_ao.h
@@ -0,0 +1,132 @@
+/**
+ * @file me1600_ao.h
+ *
+ * @brief Meilhaus ME-1600 analog output 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 _ME1600_AO_H_
+#define _ME1600_AO_H_
+
+# include <linux/version.h>
+# include "mesubdevice.h"
+
+# ifdef __KERNEL__
+
+#  define ME1600_MAX_RANGES     2       /**< Specifies the maximum number of ranges in me1600_ao_subdevice_t::u_ranges und me1600_ao_subdevice_t::i_ranges. */
+
+/**
+ * @brief Defines a entry in the range table.
+ */
+typedef struct me1600_ao_range_entry {
+        int32_t min;
+        int32_t max;
+} me1600_ao_range_entry_t;
+
+typedef struct me1600_ao_timeout {
+        unsigned long start_time;
+        unsigned long delay;
+} me1600_ao_timeout_t;
+
+typedef struct me1600_ao_shadow {
+        int count;
+        unsigned long *registry;
+        uint16_t *shadow;
+        uint16_t *mirror;
+        uint16_t synchronous;                                                                   /**< Synchronization list. */
+        uint16_t trigger;                                                                               /**< Synchronization flag. */
+} me1600_ao_shadow_t;
+
+typedef enum ME1600_AO_STATUS {
+        ao_status_none = 0,
+        ao_status_single_configured,
+        ao_status_single_run,
+        ao_status_single_end,
+        ao_status_last
+} ME1600_AO_STATUS;
+
+/**
+ * @brief The ME-1600 analog output subdevice class.
+ */
+typedef struct me1600_ao_subdevice {
+        /* Inheritance */
+        me_subdevice_t base;                                                                    /**< The subdevice base class. */
+
+        /* Attributes */
+        int ao_idx;                                                                                             /**< The index of the analog output subdevice on the device. */
+
+        spinlock_t subdevice_lock;                                                              /**< Spin lock to protect the subdevice from concurrent access. */
+        spinlock_t *config_regs_lock;                                                   /**< Spin lock to protect configuration registers from concurrent access. */
+
+        int u_ranges_count;                                                                             /**< The number of voltage ranges available on this subdevice. */
+        me1600_ao_range_entry_t u_ranges[ME1600_MAX_RANGES];    /**< Array holding the voltage ranges on this subdevice. */
+        int i_ranges_count;                                                                             /**< The number of current ranges available on this subdevice. */
+        me1600_ao_range_entry_t i_ranges[ME1600_MAX_RANGES];    /**< Array holding the current ranges on this subdevice. */
+
+        /* Registers */
+        unsigned long uni_bi_reg;                                                               /**< Register for switching between unipoar and bipolar output mode. */
+        unsigned long i_range_reg;                                                              /**< Register for switching between ranges. */
+        unsigned long sim_output_reg;                                                   /**< Register used in order to update all channels simultaneously. */
+        unsigned long current_on_reg;                                                   /**< Register enabling current output on the fourth subdevice. */
+#   ifdef PDEBUG_REG
+        unsigned long reg_base;
+#   endif
+
+        ME1600_AO_STATUS status;
+        me1600_ao_shadow_t *ao_regs_shadows;                                    /**< Addresses and shadows of output's registers. */
+        spinlock_t *ao_shadows_lock;                                                    /**< Protects the shadow's struct. */
+        int mode;                                                                                               /**< Mode in witch output should works. */
+        wait_queue_head_t wait_queue;                                                   /**< Wait queue to put on tasks waiting for data to arrive. */
+        me1600_ao_timeout_t timeout;                                                    /**< The timeout for start in blocking and non-blocking mode. */
+        struct workqueue_struct *me1600_workqueue;
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)
+        struct work_struct ao_control_task;
+#else
+        struct delayed_work ao_control_task;
+#endif
+
+        volatile int ao_control_task_flag;                                              /**< Flag controling reexecuting of control task */
+} me1600_ao_subdevice_t;
+
+/**
+ * @brief The constructor to generate a subdevice template instance.
+ *
+ * @param reg_base The register base address of the device as returned by the PCI BIOS.
+ * @param ao_idx The index of the analog output subdevice on the device.
+ * @param current Flag indicating that analog output with #ao_idx of 3 is capable of current output.
+ * @param config_regs_lock Pointer to spin lock protecting the configuration registers and from concurrent access.
+ *
+ * @return Pointer to new instance on success.\n
+ * NULL on error.
+ */
+me1600_ao_subdevice_t *me1600_ao_constructor(uint32_t reg_base,
+                                             unsigned int ao_idx,
+                                             int curr,
+                                             spinlock_t * config_regs_lock,
+                                             spinlock_t * ao_shadows_lock,
+                                             me1600_ao_shadow_t *
+                                             ao_regs_shadows,
+                                             struct workqueue_struct
+                                             *me1600_wq);
+
+# endif //__KERNEL__
+#endif //_ME1600_AO_H_