ALSA: SB X-Fi driver merge

The Sound Blaster X-Fi driver supports Creative solutions based on
20K1 and 20K2 chipsets.

Supported hardware :

Creative Sound Blaster X-Fi Titanium Fatal1ty® Champion Series
Creative Sound Blaster X-Fi Titanium Fatal1ty Professional Series
Creative Sound Blaster X-Fi Titanium Professional Audio
Creative Sound Blaster X-Fi Titanium
Creative Sound Blaster X-Fi Elite Pro
Creative Sound Blaster X-Fi Platinum
Creative Sound Blaster X-Fi Fatal1ty
Creative Sound Blaster X-Fi XtremeGamer
Creative Sound Blaster X-Fi XtremeMusic

Current release features:

* ALSA PCM Playback
* ALSA Record
* ALSA Mixer

Note:

* External I/O modules detection not included.

Signed-off-by: Wai Yew CHAY <wychay@ctl.creative.com>
Singed-off-by: Ryan RICHARDS <ryan_richards@creativelabs.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 108 insertions, 0 deletions

diff --git a/sound/pci/ctxfi/cthardware.c b/sound/pci/ctxfi/cthardware.c
new file mode 100644
index 000000000000..8e58860f641c
--- /dev/null
+++ b/sound/pci/ctxfi/cthardware.c
@@ -0,0 +1,108 @@
+/**
+ * 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>
+
+static enum CHIPTYP get_chip_type(struct hw *hw)
+{
+        enum CHIPTYP type = ATCNONE;
+
+        switch (hw->pci->device) {
+        case 0x0005:    /* 20k1 device */
+                type = ATC20K1;
+                break;
+        case 0x000B:    /* 20k2 device */
+                type = ATC20K2;
+                break;
+        default:
+                type = ATCNONE;
+                break;
+        }
+
+        return type;
+}
+
+int create_hw_obj(struct pci_dev *pci, struct hw **rhw)
+{
+        int err = 0;
+
+        switch (pci->device) {
+        case 0x0005:    /* 20k1 device */
+                err = create_20k1_hw_obj(rhw);
+                break;
+        case 0x000B:    /* 20k2 device */
+                err = create_20k2_hw_obj(rhw);
+                break;
+        default:
+                err = -ENODEV;
+                break;
+        }
+        if (err)
+                return err;
+
+        (*rhw)->pci = pci;
+        (*rhw)->get_chip_type = get_chip_type;
+
+        return 0;
+}
+
+int destroy_hw_obj(struct hw *hw)
+{
+        int err = 0;
+
+        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);
+}
+