arch: remove blackfin port

The Analog Devices Blackfin port was added in 2007 and was rather
active for a while, but all work on it has come to a standstill
over time, as Analog have changed their product line-up.

Aaron Wu confirmed that the architecture port is no longer relevant,
and multiple people suggested removing blackfin independently because
of some of its oddities like a non-working SMP port, and the amount of
duplication between the chip variants, which cause extra work when
doing cross-architecture changes.

Link: https://docs.blackfin.uclinux.org/
Acked-by: Aaron Wu <Aaron.Wu@analog.com>
Acked-by: Bryan Wu <cooloney@gmail.com>
Cc: Steven Miao <realmz6@gmail.com>
Cc: Mike Frysinger <vapier@chromium.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

1 files changed, 0 insertions, 46 deletions

diff --git a/arch/blackfin/include/asm/dma-mapping.h b/arch/blackfin/include/asm/dma-mapping.h
deleted file mode 100644
index 04254ac36bed..000000000000
--- a/arch/blackfin/include/asm/dma-mapping.h
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
- * Copyright 2004-2009 Analog Devices Inc.
- *
- * Licensed under the GPL-2 or later.
- */
-
-#ifndef _BLACKFIN_DMA_MAPPING_H
-#define _BLACKFIN_DMA_MAPPING_H
-
-#include <asm/cacheflush.h>
-
-extern void
-__dma_sync(dma_addr_t addr, size_t size, enum dma_data_direction dir);
-static inline void
-__dma_sync_inline(dma_addr_t addr, size_t size, enum dma_data_direction dir)
-{
-	switch (dir) {
-	case DMA_NONE:
-		BUG();
-	case DMA_TO_DEVICE:		/* writeback only */
-		flush_dcache_range(addr, addr + size);
-		break;
-	case DMA_FROM_DEVICE: /* invalidate only */
-	case DMA_BIDIRECTIONAL: /* flush and invalidate */
-		/* Blackfin has no dedicated invalidate (it includes a flush) */
-		invalidate_dcache_range(addr, addr + size);
-		break;
-	}
-}
-static inline void
-_dma_sync(dma_addr_t addr, size_t size, enum dma_data_direction dir)
-{
-	if (__builtin_constant_p(dir))
-		__dma_sync_inline(addr, size, dir);
-	else
-		__dma_sync(addr, size, dir);
-}
-
-extern const struct dma_map_ops bfin_dma_ops;
-
-static inline const struct dma_map_ops *get_arch_dma_ops(struct bus_type *bus)
-{
-	return &bfin_dma_ops;
-}
-
-#endif				/* _BLACKFIN_DMA_MAPPING_H */