1 files changed, 91 insertions, 0 deletions
diff --git a/sound/pci/ctxfi/cthardware.c b/sound/pci/ctxfi/cthardware.c
new file mode 100644
index 000000000000..8e64f4862e85
--- /dev/null
+++ b/sound/pci/ctxfi/cthardware.c
@@ -0,0 +1,91 @@
+/**
+ * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
+ *
+ * This source file is released under GPL v2 license (no other versions).
+ * See the COPYING file included in the main directory of this source
+ * distribution for the license terms and conditions.
+ *
+ * @File	cthardware.c
+ *
+ * @Brief
+ * This file contains the implementation of hardware access methord.
+ *
+ * @Author	Liu Chun
+ * @Date 	Jun 26 2008
+ *
+ */
+
+#include "cthardware.h"
+#include "cthw20k1.h"
+#include "cthw20k2.h"
+#include <linux/bug.h>
+
+int __devinit create_hw_obj(struct pci_dev *pci, enum CHIPTYP chip_type,
+			    enum CTCARDS model, struct hw **rhw)
+{
+	int err;
+
+	switch (chip_type) {
+	case ATC20K1:
+		err = create_20k1_hw_obj(rhw);
+		break;
+	case ATC20K2:
+		err = create_20k2_hw_obj(rhw);
+		break;
+	default:
+		err = -ENODEV;
+		break;
+	}
+	if (err)
+		return err;
+
+	(*rhw)->pci = pci;
+	(*rhw)->chip_type = chip_type;
+	(*rhw)->model = model;
+
+	return 0;
+}
+
+int destroy_hw_obj(struct hw *hw)
+{
+	int err;
+
+	switch (hw->pci->device) {
+	case 0x0005:	/* 20k1 device */
+		err = destroy_20k1_hw_obj(hw);
+		break;
+	case 0x000B:	/* 20k2 device */
+		err = destroy_20k2_hw_obj(hw);
+		break;
+	default:
+		err = -ENODEV;
+		break;
+	}
+
+	return err;
+}
+
+unsigned int get_field(unsigned int data, unsigned int field)
+{
+	int i;
+
+	BUG_ON(!field);
+	/* @field should always be greater than 0 */
+	for (i = 0; !(field & (1 << i)); )
+		i++;
+
+	return (data & field) >> i;
+}
+
+void set_field(unsigned int *data, unsigned int field, unsigned int value)
+{
+	int i;
+
+	BUG_ON(!field);
+	/* @field should always be greater than 0 */
+	for (i = 0; !(field & (1 << i)); )
+		i++;
+
+	*data = (*data & (~field)) | ((value << i) & field);
+}
+