1 files changed, 0 insertions, 125 deletions
diff --git a/drivers/mtd/maps/physmap-bt1-rom.c b/drivers/mtd/maps/physmap-bt1-rom.c
deleted file mode 100644
index 60dccc48f99e..000000000000
--- a/drivers/mtd/maps/physmap-bt1-rom.c
+++ /dev/null
@@ -1,125 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * Copyright (C) 2020 BAIKAL ELECTRONICS, JSC
- *
- * Authors:
- *   Serge Semin <Sergey.Semin@baikalelectronics.ru>
- *
- * Baikal-T1 Physically Mapped Internal ROM driver
- */
-#include <linux/bits.h>
-#include <linux/device.h>
-#include <linux/kernel.h>
-#include <linux/mtd/map.h>
-#include <linux/mtd/xip.h>
-#include <linux/mux/consumer.h>
-#include <linux/of.h>
-#include <linux/platform_device.h>
-#include <linux/string.h>
-#include <linux/types.h>
-
-#include "physmap-bt1-rom.h"
-
-/*
- * Baikal-T1 SoC ROMs are only accessible by the dword-aligned instructions.
- * We have to take this into account when implementing the data read-methods.
- * Note there is no need in bothering with endianness, since both Baikal-T1
- * CPU and MMIO are LE.
- */
-static map_word __xipram bt1_rom_map_read(struct map_info *map,
-					  unsigned long ofs)
-{
-	void __iomem *src = map->virt + ofs;
-	unsigned int shift;
-	map_word ret;
-	u32 data;
-
-	/* Read data within offset dword. */
-	shift = (uintptr_t)src & 0x3;
-	data = readl_relaxed(src - shift);
-	if (!shift) {
-		ret.x[0] = data;
-		return ret;
-	}
-	ret.x[0] = data >> (shift * BITS_PER_BYTE);
-
-	/* Read data from the next dword. */
-	shift = 4 - shift;
-	if (ofs + shift >= map->size)
-		return ret;
-
-	data = readl_relaxed(src + shift);
-	ret.x[0] |= data << (shift * BITS_PER_BYTE);
-
-	return ret;
-}
-
-static void __xipram bt1_rom_map_copy_from(struct map_info *map,
-					   void *to, unsigned long from,
-					   ssize_t len)
-{
-	void __iomem *src = map->virt + from;
-	unsigned int shift, chunk;
-	u32 data;
-
-	if (len <= 0 || from >= map->size)
-		return;
-
-	/* Make sure we don't go over the map limit. */
-	len = min_t(ssize_t, map->size - from, len);
-
-	/*
-	 * Since requested data size can be pretty big we have to implement
-	 * the copy procedure as optimal as possible. That's why it's split
-	 * up into the next three stages: unaligned head, aligned body,
-	 * unaligned tail.
-	 */
-	shift = (uintptr_t)src & 0x3;
-	if (shift) {
-		chunk = min_t(ssize_t, 4 - shift, len);
-		data = readl_relaxed(src - shift);
-		memcpy(to, (char *)&data + shift, chunk);
-		src += chunk;
-		to += chunk;
-		len -= chunk;
-	}
-
-	while (len >= 4) {
-		data = readl_relaxed(src);
-		memcpy(to, &data, 4);
-		src += 4;
-		to += 4;
-		len -= 4;
-	}
-
-	if (len) {
-		data = readl_relaxed(src);
-		memcpy(to, &data, len);
-	}
-}
-
-int of_flash_probe_bt1_rom(struct platform_device *pdev,
-			   struct device_node *np,
-			   struct map_info *map)
-{
-	struct device *dev = &pdev->dev;
-
-	/* It's supposed to be read-only MTD. */
-	if (!of_device_is_compatible(np, "mtd-rom")) {
-		dev_info(dev, "No mtd-rom compatible string\n");
-		return 0;
-	}
-
-	/* Multiplatform guard. */
-	if (!of_device_is_compatible(np, "baikal,bt1-int-rom"))
-		return 0;
-
-	/* Sanity check the device parameters retrieved from DTB. */
-	if (map->bankwidth != 4)
-		dev_warn(dev, "Bank width is supposed to be 32 bits wide\n");
-
-	map->read = bt1_rom_map_read;
-	map->copy_from = bt1_rom_map_copy_from;
-
-	return 0;
-}