fmc: Delete the FMC subsystem

The FMC subsystem was created in 2012 with the ambition to
drive development of drivers for this hardware upstream.

The current implementation has architectural flaws and would
need to be revamped using real hardware to something that can
reuse existing kernel abstractions in the subsystems for e.g.
I2C, FPGA and GPIO.

We have concluded that for the mainline kernel it will be
better to delete the subsystem and start over with a clean
slate when/if an active maintainer steps up.

For details see:
https://lkml.org/lkml/2018/10/29/534

Suggested-by: Federico Vaga <federico.vaga@cern.ch>
Cc: Pat Riehecky <riehecky@fnal.gov>
Acked-by: Alessandro Rubini <rubini@gnudd.com>
Signed-off-by: Federico Vaga <federico.vaga@cern.ch>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

1 files changed, 0 insertions, 39 deletions

diff --git a/include/linux/fmc-sdb.h b/include/linux/fmc-sdb.h
deleted file mode 100644
index bec899f0867c..000000000000
--- a/include/linux/fmc-sdb.h
+++ /dev/null
@@ -1,39 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * This file is separate from sdb.h, because I want that one to remain
- * unchanged (as far as possible) from the official sdb distribution
- *
- * This file and associated functionality are a playground for me to
- * understand stuff which will later be implemented in more generic places.
- */
-#include <linux/sdb.h>
-
-/* This is the union of all currently defined types */
-union sdb_record {
-	struct sdb_interconnect ic;
-	struct sdb_device dev;
-	struct sdb_bridge bridge;
-	struct sdb_integration integr;
-	struct sdb_empty empty;
-	struct sdb_synthesis synthesis;
-	struct sdb_repo_url repo_url;
-};
-
-struct fmc_device;
-
-/* Every sdb table is turned into this structure */
-struct sdb_array {
-	int len;
-	int level;
-	unsigned long baseaddr;
-	struct fmc_device *fmc;		/* the device that hosts it */
-	struct sdb_array *parent;	/* NULL at root */
-	union sdb_record *record;	/* copies of the struct */
-	struct sdb_array **subtree;	/* only valid for bridge items */
-};
-
-extern int fmc_scan_sdb_tree(struct fmc_device *fmc, unsigned long address);
-extern void fmc_show_sdb_tree(const struct fmc_device *fmc);
-extern signed long fmc_find_sdb_device(struct sdb_array *tree, uint64_t vendor,
-				       uint32_t device, unsigned long *sz);
-extern int fmc_free_sdb_tree(struct fmc_device *fmc);