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authorArnd Bergmann <arnd@arndb.de>2015-01-30 10:45:33 +0100
committerArnd Bergmann <arnd@arndb.de>2015-12-01 21:52:51 +0100
commit3acf731ccad039d91721b6cd9fc85569e9f958ca (patch)
tree37ccacb1c2ebc2519d70dab7e48f7d2961cd0195 /arch/arm/mach-davinci/sram.h
parentARM: ks8695: make headers more local (diff)
downloadlinux-3acf731ccad039d91721b6cd9fc85569e9f958ca.tar.xz
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ARM: davinci: make headers more local
Some header files are never included outside of a mach-davinci directory and do not need to be made visible in include/mach, so let's just move them all down one level. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sekhar Nori <nsekhar@ti.com>
Diffstat (limited to 'arch/arm/mach-davinci/sram.h')
-rw-r--r--arch/arm/mach-davinci/sram.h30
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-davinci/sram.h b/arch/arm/mach-davinci/sram.h
new file mode 100644
index 000000000000..4e5db56218b8
--- /dev/null
+++ b/arch/arm/mach-davinci/sram.h
@@ -0,0 +1,30 @@
+/*
+ * mach/sram.h - DaVinci simple SRAM allocator
+ *
+ * Copyright (C) 2009 David Brownell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __MACH_SRAM_H
+#define __MACH_SRAM_H
+
+/* ARBITRARY: SRAM allocations are multiples of this 2^N size */
+#define SRAM_GRANULARITY 512
+
+/*
+ * SRAM allocations return a CPU virtual address, or NULL on error.
+ * If a DMA address is requested and the SRAM supports DMA, its
+ * mapped address is also returned.
+ *
+ * Errors include SRAM memory not being available, and requesting
+ * DMA mapped SRAM on systems which don't allow that.
+ */
+extern void *sram_alloc(size_t len, dma_addr_t *dma);
+extern void sram_free(void *addr, size_t len);
+
+/* Get the struct gen_pool * for use in platform data */
+extern struct gen_pool *sram_get_gen_pool(void);
+
+#endif /* __MACH_SRAM_H */