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, 72 insertions, 0 deletions

diff --git a/sound/pci/ctxfi/ctresource.h b/sound/pci/ctxfi/ctresource.h
new file mode 100644
index 000000000000..0838c2e84f8b
--- /dev/null
+++ b/sound/pci/ctxfi/ctresource.h
@@ -0,0 +1,72 @@
+/**
+ * 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        ctresource.h
+ *
+ * @Brief
+ * This file contains the definition of generic hardware resources for
+ * resource management.
+ *
+ * @Author      Liu Chun
+ * @Date        May 13 2008
+ *
+ */
+
+#ifndef CTRESOURCE_H
+#define CTRESOURCE_H
+
+#include <linux/types.h>
+
+enum RSCTYP {
+        SRC,
+        SRCIMP,
+        AMIXER,
+        SUM,
+        DAIO,
+        NUM_RSCTYP      /* This must be the last one and less than 16 */
+};
+
+struct rsc_ops;
+
+struct rsc {
+        u32 idx:12;     /* The index of a resource */
+        u32 type:4;     /* The type (RSCTYP) of a resource */
+        u32 conj:12;    /* Current conjugate index */
+        u32 msr:4;      /* The Master Sample Rate a resource working on */
+        void *ctrl_blk; /* Chip specific control info block for a resource */
+        void *hw;       /* Chip specific object for hardware access means */
+        struct rsc_ops *ops;    /* Generic resource operations */
+};
+
+struct rsc_ops {
+        int (*master)(struct rsc *rsc); /* Move to master resource */
+        int (*next_conj)(struct rsc *rsc); /* Move to next conjugate resource */
+        int (*index)(const struct rsc *rsc); /* Return the index of resource */
+        /* Return the output slot number */
+        int (*output_slot)(const struct rsc *rsc);
+};
+
+int rsc_init(struct rsc *rsc, u32 idx, enum RSCTYP type, u32 msr, void *hw);
+int rsc_uninit(struct rsc *rsc);
+
+struct rsc_mgr {
+        enum RSCTYP type; /* The type (RSCTYP) of resource to manage */
+        unsigned int amount; /* The total amount of a kind of resource */
+        unsigned int avail; /* The amount of currently available resources */
+        unsigned char *rscs; /* The bit-map for resource allocation */
+        void *ctrl_blk; /* Chip specific control info block */
+        void *hw; /* Chip specific object for hardware access */
+};
+
+/* Resource management is based on bit-map mechanism */
+int rsc_mgr_init(struct rsc_mgr *mgr, enum RSCTYP type,
+                 unsigned int amount, void *hw);
+int rsc_mgr_uninit(struct rsc_mgr *mgr);
+int mgr_get_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int *ridx);
+int mgr_put_resource(struct rsc_mgr *mgr, unsigned int n, unsigned int idx);
+
+#endif /* CTRESOURCE_H */