Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / sound / pci / ctxfi / ctresource.h

diff --git a/kernel/sound/pci/ctxfi/ctresource.h b/kernel/sound/pci/ctxfi/ctresource.h
new file mode 100644 (file)
index 0000000..9b746c3
--- /dev/null
+++ b/kernel/sound/pci/ctxfi/ctresource.h
@@ -0,0 +1,73 @@
+/**
+ * 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 */
+       struct hw *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, struct hw *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 */
+       struct hw *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, struct hw *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 */