Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / pci / ctxfi / cthardware.c

diff --git a/kernel/sound/pci/ctxfi/cthardware.c b/kernel/sound/pci/ctxfi/cthardware.c
new file mode 100644 (file)
index 0000000..a689f25
--- /dev/null
+++ b/kernel/sound/pci/ctxfi/cthardware.c
@@ -0,0 +1,93 @@
+/**
+ * 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 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;
+
+       if (WARN_ON(!field))
+               return 0;
+       /* @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;
+
+       if (WARN_ON(!field))
+               return;
+       /* @field should always be greater than 0 */
+       for (i = 0; !(field & (1 << i)); )
+               i++;
+
+       *data = (*data & (~field)) | ((value << i) & field);
+}
+