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Diffstat (limited to 'sound/pci/ctxfi/ctamixer.h')
-rw-r--r--sound/pci/ctxfi/ctamixer.h96
1 files changed, 96 insertions, 0 deletions
diff --git a/sound/pci/ctxfi/ctamixer.h b/sound/pci/ctxfi/ctamixer.h
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+++ b/sound/pci/ctxfi/ctamixer.h
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+/**
+ * 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 ctamixer.h
+ *
+ * @Brief
+ * This file contains the definition of the Audio Mixer
+ * resource management object.
+ *
+ * @Author Liu Chun
+ * @Date May 21 2008
+ *
+ */
+
+#ifndef CTAMIXER_H
+#define CTAMIXER_H
+
+#include "ctresource.h"
+#include <linux/spinlock.h>
+
+/* Define the descriptor of a summation node resource */
+struct sum {
+ struct rsc rsc; /* Basic resource info */
+ unsigned char idx[8];
+};
+
+/* Define sum resource request description info */
+struct sum_desc {
+ unsigned int msr;
+};
+
+struct sum_mgr {
+ struct rsc_mgr mgr; /* Basic resource manager info */
+ spinlock_t mgr_lock;
+
+ /* request one sum resource */
+ int (*get_sum)(struct sum_mgr *mgr,
+ const struct sum_desc *desc, struct sum **rsum);
+ /* return one sum resource */
+ int (*put_sum)(struct sum_mgr *mgr, struct sum *sum);
+};
+
+/* Constructor and destructor of daio resource manager */
+int sum_mgr_create(void *hw, struct sum_mgr **rsum_mgr);
+int sum_mgr_destroy(struct sum_mgr *sum_mgr);
+
+/* Define the descriptor of a amixer resource */
+struct amixer_rsc_ops;
+
+struct amixer {
+ struct rsc rsc; /* Basic resource info */
+ unsigned char idx[8];
+ struct rsc *input; /* pointer to a resource acting as source */
+ struct sum *sum; /* Put amixer output to this summation node */
+ struct amixer_rsc_ops *ops; /* AMixer specific operations */
+};
+
+struct amixer_rsc_ops {
+ int (*set_input)(struct amixer *amixer, struct rsc *rsc);
+ int (*set_scale)(struct amixer *amixer, unsigned int scale);
+ int (*set_invalid_squash)(struct amixer *amixer, unsigned int iv);
+ int (*set_sum)(struct amixer *amixer, struct sum *sum);
+ int (*commit_write)(struct amixer *amixer);
+ /* Only for interleaved recording */
+ int (*commit_raw_write)(struct amixer *amixer);
+ int (*setup)(struct amixer *amixer, struct rsc *input,
+ unsigned int scale, struct sum *sum);
+ int (*get_scale)(struct amixer *amixer);
+};
+
+/* Define amixer resource request description info */
+struct amixer_desc {
+ unsigned int msr;
+};
+
+struct amixer_mgr {
+ struct rsc_mgr mgr; /* Basic resource manager info */
+ spinlock_t mgr_lock;
+
+ /* request one amixer resource */
+ int (*get_amixer)(struct amixer_mgr *mgr,
+ const struct amixer_desc *desc,
+ struct amixer **ramixer);
+ /* return one amixer resource */
+ int (*put_amixer)(struct amixer_mgr *mgr, struct amixer *amixer);
+};
+
+/* Constructor and destructor of amixer resource manager */
+int amixer_mgr_create(void *hw, struct amixer_mgr **ramixer_mgr);
+int amixer_mgr_destroy(struct amixer_mgr *amixer_mgr);
+
+#endif /* CTAMIXER_H */