ALSA: hda - Move generic array helpers to core lib

This will be used by the regmap support.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

5 files changed, 84 insertions, 77 deletions

diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 675614dc2b88..3abdd3f16528 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -22,6 +22,17 @@ struct hdac_widget_tree;
 extern struct bus_type snd_hda_bus_type;
 
 /*
+ * generic arrays
+ */
+struct snd_array {
+        unsigned int used;
+        unsigned int alloced;
+        unsigned int elem_size;
+        unsigned int alloc_align;
+        void *list;
+};
+
+/*
  * HD-audio codec base device
  */
 struct hdac_device {
@@ -178,4 +189,26 @@ static inline void snd_hdac_codec_link_down(struct hdac_device *codec)
         clear_bit(codec->addr, &codec->bus->codec_powered);
 }
 
+/*
+ * generic array helpers
+ */
+void *snd_array_new(struct snd_array *array);
+void snd_array_free(struct snd_array *array);
+static inline void snd_array_init(struct snd_array *array, unsigned int size,
+                                  unsigned int align)
+{
+        array->elem_size = size;
+        array->alloc_align = align;
+}
+
+static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
+{
+        return array->list + idx * array->elem_size;
+}
+
+static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
+{
+        return (unsigned long)(ptr - array->list) / array->elem_size;
+}
+
 #endif /* __SOUND_HDAUDIO_H */
diff --git a/sound/hda/Makefile b/sound/hda/Makefile
index eec5da03b41f..e508ba1102cb 100644
--- a/sound/hda/Makefile
+++ b/sound/hda/Makefile
@@ -1,4 +1,5 @@
-snd-hda-core-objs := hda_bus_type.o hdac_bus.o hdac_device.o hdac_sysfs.o
+snd-hda-core-objs := hda_bus_type.o hdac_bus.o hdac_device.o hdac_sysfs.o \
+        array.o
 
 snd-hda-core-objs += trace.o
 CFLAGS_trace.o := -I$(src)
diff --git a/sound/hda/array.c b/sound/hda/array.c
new file mode 100644
index 000000000000..516795baa7db
--- /dev/null
+++ b/sound/hda/array.c
@@ -0,0 +1,49 @@
+/*
+ * generic arrays
+ */
+
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/hdaudio.h>
+
+/**
+ * snd_array_new - get a new element from the given array
+ * @array: the array object
+ *
+ * Get a new element from the given array.  If it exceeds the
+ * pre-allocated array size, re-allocate the array.
+ *
+ * Returns NULL if allocation failed.
+ */
+void *snd_array_new(struct snd_array *array)
+{
+        if (snd_BUG_ON(!array->elem_size))
+                return NULL;
+        if (array->used >= array->alloced) {
+                int num = array->alloced + array->alloc_align;
+                int size = (num + 1) * array->elem_size;
+                void *nlist;
+                if (snd_BUG_ON(num >= 4096))
+                        return NULL;
+                nlist = krealloc(array->list, size, GFP_KERNEL | __GFP_ZERO);
+                if (!nlist)
+                        return NULL;
+                array->list = nlist;
+                array->alloced = num;
+        }
+        return snd_array_elem(array, array->used++);
+}
+EXPORT_SYMBOL_GPL(snd_array_new);
+
+/**
+ * snd_array_free - free the given array elements
+ * @array: the array object
+ */
+void snd_array_free(struct snd_array *array)
+{
+        kfree(array->list);
+        array->used = 0;
+        array->alloced = 0;
+        array->list = NULL;
+}
+EXPORT_SYMBOL_GPL(snd_array_free);
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 145cae7903b6..10e257ff9084 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -5012,52 +5012,6 @@ void snd_hda_bus_reset(struct hda_bus *bus)
 }
 EXPORT_SYMBOL_GPL(snd_hda_bus_reset);
 
-/*
- * generic arrays
- */
-
-/**
- * snd_array_new - get a new element from the given array
- * @array: the array object
- *
- * Get a new element from the given array.  If it exceeds the
- * pre-allocated array size, re-allocate the array.
- *
- * Returns NULL if allocation failed.
- */
-void *snd_array_new(struct snd_array *array)
-{
-        if (snd_BUG_ON(!array->elem_size))
-                return NULL;
-        if (array->used >= array->alloced) {
-                int num = array->alloced + array->alloc_align;
-                int size = (num + 1) * array->elem_size;
-                void *nlist;
-                if (snd_BUG_ON(num >= 4096))
-                        return NULL;
-                nlist = krealloc(array->list, size, GFP_KERNEL | __GFP_ZERO);
-                if (!nlist)
-                        return NULL;
-                array->list = nlist;
-                array->alloced = num;
-        }
-        return snd_array_elem(array, array->used++);
-}
-EXPORT_SYMBOL_GPL(snd_array_new);
-
-/**
- * snd_array_free - free the given array elements
- * @array: the array object
- */
-void snd_array_free(struct snd_array *array)
-{
-        kfree(array->list);
-        array->used = 0;
-        array->alloced = 0;
-        array->list = NULL;
-}
-EXPORT_SYMBOL_GPL(snd_array_free);
-
 /**
  * snd_print_pcm_bits - Print the supported PCM fmt bits to the string buffer
  * @pcm: PCM caps bits
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 76776164623d..3068163b3db2 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -30,36 +30,6 @@
 #include <sound/hda_verbs.h>
 
 /*
- * generic arrays
- */
-struct snd_array {
-        unsigned int used;
-        unsigned int alloced;
-        unsigned int elem_size;
-        unsigned int alloc_align;
-        void *list;
-};
-
-void *snd_array_new(struct snd_array *array);
-void snd_array_free(struct snd_array *array);
-static inline void snd_array_init(struct snd_array *array, unsigned int size,
-                                  unsigned int align)
-{
-        array->elem_size = size;
-        array->alloc_align = align;
-}
-
-static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
-{
-        return array->list + idx * array->elem_size;
-}
-
-static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
-{
-        return (unsigned long)(ptr - array->list) / array->elem_size;
-}
-
-/*
  * Structures
  */