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>
diff --git a/drivers/staging/meilhaus/me0900_di.c b/drivers/staging/meilhaus/me0900_di.c
new file mode 100644
index 0000000..d7d7394
--- /dev/null
+++ b/drivers/staging/meilhaus/me0900_di.c
@@ -0,0 +1,246 @@
+/**
+ * @file me0900_di.c
+ *
+ * @brief ME-9x digital input subdevice instance.
+ * @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 __KERNEL__
+# define __KERNEL__
+#endif
+
+/*
+ * Includes
+ */
+#include <linux/module.h>
+
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <asm/io.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/version.h>
+
+#include "medefines.h"
+#include "meinternal.h"
+#include "meerror.h"
+
+#include "meids.h"
+#include "medebug.h"
+#include "meplx_reg.h"
+#include "me0900_reg.h"
+#include "me0900_di.h"
+
+/*
+ * Defines
+ */
+
+/*
+ * Functions
+ */
+
+static int me0900_di_io_reset_subdevice(struct me_subdevice *subdevice,
+ struct file *filep, int flags)
+{
+ PDEBUG("executed.\n");
+
+ if (flags) {
+ PERROR("Invalid flag specified.\n");
+ return ME_ERRNO_INVALID_FLAGS;
+ }
+
+ return ME_ERRNO_SUCCESS;
+}
+
+static int me0900_di_io_single_config(me_subdevice_t * subdevice,
+ struct file *filep,
+ int channel,
+ int single_config,
+ int ref,
+ int trig_chan,
+ int trig_type, int trig_edge, int flags)
+{
+ me0900_di_subdevice_t *instance;
+ int err = ME_ERRNO_SUCCESS;
+
+ PDEBUG("executed.\n");
+
+ instance = (me0900_di_subdevice_t *) subdevice;
+
+ ME_SUBDEVICE_ENTER;
+
+ spin_lock(&instance->subdevice_lock);
+ switch (flags) {
+ case ME_IO_SINGLE_CONFIG_NO_FLAGS:
+ case ME_IO_SINGLE_TYPE_DIO_BYTE:
+ if (channel == 0) {
+ if (single_config == ME_SINGLE_CONFIG_DIO_INPUT) {
+ } else {
+ PERROR("Invalid byte direction specified.\n");
+ err = ME_ERRNO_INVALID_SINGLE_CONFIG;
+ }
+ } else {
+ PERROR("Invalid byte number specified.\n");
+ err = ME_ERRNO_INVALID_CHANNEL;
+ }
+ break;
+
+ default:
+ PERROR("Invalid flags specified.\n");
+ err = ME_ERRNO_INVALID_FLAGS;
+ }
+ spin_unlock(&instance->subdevice_lock);
+
+ ME_SUBDEVICE_EXIT;
+
+ return err;
+}
+
+static int me0900_di_io_single_read(me_subdevice_t * subdevice,
+ struct file *filep,
+ int channel,
+ int *value, int time_out, int flags)
+{
+ me0900_di_subdevice_t *instance;
+ int err = ME_ERRNO_SUCCESS;
+
+ PDEBUG("executed.\n");
+
+ instance = (me0900_di_subdevice_t *) subdevice;
+
+ ME_SUBDEVICE_ENTER;
+
+ spin_lock(&instance->subdevice_lock);
+ switch (flags) {
+ case ME_IO_SINGLE_TYPE_DIO_BIT:
+ if ((channel >= 0) && (channel < 8)) {
+ *value = (~inb(instance->port_reg)) & (0x1 << channel);
+ } else {
+ PERROR("Invalid bit number specified.\n");
+ err = ME_ERRNO_INVALID_CHANNEL;
+ }
+ break;
+
+ case ME_IO_SINGLE_NO_FLAGS:
+ case ME_IO_SINGLE_TYPE_DIO_BYTE:
+ if (channel == 0) {
+ *value = ~inb(instance->port_reg);
+ } else {
+ PERROR("Invalid byte number specified.\n");
+ err = ME_ERRNO_INVALID_CHANNEL;
+ }
+ break;
+
+ default:
+ PERROR("Invalid flags specified.\n");
+ err = ME_ERRNO_INVALID_FLAGS;
+ }
+ spin_unlock(&instance->subdevice_lock);
+
+ ME_SUBDEVICE_EXIT;
+
+ return err;
+}
+
+static int me0900_di_query_number_channels(me_subdevice_t * subdevice,
+ int *number)
+{
+ PDEBUG("executed.\n");
+ *number = 8;
+ return ME_ERRNO_SUCCESS;
+}
+
+static int me0900_di_query_subdevice_type(me_subdevice_t * subdevice,
+ int *type, int *subtype)
+{
+ PDEBUG("executed.\n");
+ *type = ME_TYPE_DI;
+ *subtype = ME_SUBTYPE_SINGLE;
+ return ME_ERRNO_SUCCESS;
+}
+
+static int me0900_di_query_subdevice_caps(me_subdevice_t * subdevice, int *caps)
+{
+ PDEBUG("executed.\n");
+ *caps = 0;
+ return ME_ERRNO_SUCCESS;
+}
+
+me0900_di_subdevice_t *me0900_di_constructor(uint32_t reg_base,
+ unsigned int di_idx)
+{
+ me0900_di_subdevice_t *subdevice;
+ int err;
+
+ PDEBUG("executed.\n");
+
+ /* Allocate memory for subdevice instance */
+ subdevice = kmalloc(sizeof(me0900_di_subdevice_t), GFP_KERNEL);
+
+ if (!subdevice) {
+ PERROR("Cannot get memory for subdevice instance.\n");
+ return NULL;
+ }
+
+ memset(subdevice, 0, sizeof(me0900_di_subdevice_t));
+
+ /* Initialize subdevice base class */
+ err = me_subdevice_init(&subdevice->base);
+
+ if (err) {
+ PERROR("Cannot initialize subdevice base class instance.\n");
+ kfree(subdevice);
+ return NULL;
+ }
+ // Initialize spin locks.
+ spin_lock_init(&subdevice->subdevice_lock);
+
+ /* Save the subdevice index. */
+ subdevice->di_idx = di_idx;
+
+ /* Initialize registers */
+ if (di_idx == 0) {
+ subdevice->ctrl_reg = reg_base + ME0900_CTRL_REG;
+ subdevice->port_reg = reg_base + ME0900_PORT_A_REG;
+ } else {
+ subdevice->ctrl_reg = reg_base + ME0900_CTRL_REG;
+ subdevice->port_reg = reg_base + ME0900_PORT_B_REG;
+ }
+#ifdef MEDEBUG_DEBUG_REG
+ subdevice->reg_base = reg_base;
+#endif
+
+ /* Overload base class methods. */
+ subdevice->base.me_subdevice_io_reset_subdevice =
+ me0900_di_io_reset_subdevice;
+ subdevice->base.me_subdevice_io_single_config =
+ me0900_di_io_single_config;
+ subdevice->base.me_subdevice_io_single_read = me0900_di_io_single_read;
+ subdevice->base.me_subdevice_query_number_channels =
+ me0900_di_query_number_channels;
+ subdevice->base.me_subdevice_query_subdevice_type =
+ me0900_di_query_subdevice_type;
+ subdevice->base.me_subdevice_query_subdevice_caps =
+ me0900_di_query_subdevice_caps;
+
+ return subdevice;
+}