diff options
Diffstat (limited to 'target/linux/sunxi/patches-4.1/112-mtd-add-dt-nand-partition-parser.patch')
| -rw-r--r-- | target/linux/sunxi/patches-4.1/112-mtd-add-dt-nand-partition-parser.patch | 152 |
1 files changed, 0 insertions, 152 deletions
diff --git a/target/linux/sunxi/patches-4.1/112-mtd-add-dt-nand-partition-parser.patch b/target/linux/sunxi/patches-4.1/112-mtd-add-dt-nand-partition-parser.patch deleted file mode 100644 index 76f0051266..0000000000 --- a/target/linux/sunxi/patches-4.1/112-mtd-add-dt-nand-partition-parser.patch +++ /dev/null @@ -1,152 +0,0 @@ -From 0460e9868fd82a3675db02f6ceb6edfd8501c194 Mon Sep 17 00:00:00 2001 -From: Boris BREZILLON <boris.brezillon@free-electrons.com> -Date: Mon, 28 Jul 2014 14:31:42 +0200 -Subject: [PATCH] mtd: nand: Add DT NAND partition parser - -Add a of_nandpart_parse function to help parsing NAND partitions from DT. -This function should be called from NAND controller drivers just after the -nand_scan_tail in place of mtd_device_parse_register. -The caller can specify a parser function to retrieve HW specific -informations from the DT. - -Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com> -Signed-off-by: Hans de Goede <hdegoede@redhat.com> ---- - drivers/mtd/nand/ofnandpart.c | 104 ++++++++++++++++++++++++++++++++++++++++++ - include/linux/mtd/nand.h | 17 +++++++ - 2 files changed, 121 insertions(+) - create mode 100644 drivers/mtd/nand/ofnandpart.c - ---- /dev/null -+++ b/drivers/mtd/nand/ofnandpart.c -@@ -0,0 +1,104 @@ -+/* -+ * NAND Flash partitions described by the OF (or flattened) device tree -+ * -+ * Copyright © 2014 Boris BREZILLON <b.brezillon.dev@gmail.com> -+ * -+ * This program is free software; you can redistribute it and/or modify it -+ * under the terms of the GNU General Public License as published by the -+ * Free Software Foundation; either version 2 of the License, or (at your -+ * option) any later version. -+ */ -+ -+#include <linux/module.h> -+#include <linux/init.h> -+#include <linux/of.h> -+#include <linux/mtd/mtd.h> -+#include <linux/slab.h> -+#include <linux/mtd/nand.h> -+ -+static inline bool node_has_compatible(struct device_node *pp) -+{ -+ return of_get_property(pp, "compatible", NULL); -+} -+ -+int ofnandpart_parse(struct mtd_info *master, -+ const struct ofnandpart_data *data) -+{ -+ struct device_node *node; -+ const char *partname; -+ struct device_node *pp; -+ int i; -+ -+ if (!data) -+ return 0; -+ -+ node = data->node; -+ if (!node) -+ return 0; -+ -+ i = 0; -+ for_each_child_of_node(node, pp) { -+ const __be32 *reg; -+ int len; -+ int a_cells, s_cells; -+ uint64_t offset, size; -+ uint32_t mask_flags = 0; -+ struct nand_part *part; -+ -+ if (node_has_compatible(pp)) -+ continue; -+ -+ reg = of_get_property(pp, "reg", &len); -+ if (!reg) -+ continue; -+ -+ a_cells = of_n_addr_cells(pp); -+ s_cells = of_n_size_cells(pp); -+ offset = of_read_number(reg, a_cells); -+ size = of_read_number(reg + a_cells, s_cells); -+ -+ partname = of_get_property(pp, "label", &len); -+ if (!partname) -+ partname = of_get_property(pp, "name", &len); -+ -+ if (of_get_property(pp, "read-only", &len)) -+ mask_flags |= MTD_WRITEABLE; -+ -+ if (of_get_property(pp, "lock", &len)) -+ mask_flags |= MTD_POWERUP_LOCK; -+ -+ if (data->parse) -+ part = data->parse(data->priv, master, pp); -+ else -+ part = nandpart_alloc(); -+ -+ if (IS_ERR(part)) -+ continue; -+ -+ part->offset = offset; -+ part->master = master; -+ part->mtd.name = partname; -+ part->mtd.size = size; -+ part->mtd.flags = mask_flags; -+ -+ if (nand_add_partition(master, part)) { -+ if (part->release) -+ part->release(part); -+ continue; -+ } -+ -+ i++; -+ } -+ -+ if (!i) { -+ of_node_put(pp); -+ pr_err("No valid partition found on %s\n", node->full_name); -+ } -+ -+ return i; -+} -+EXPORT_SYMBOL(ofnandpart_parse); -+ -+MODULE_LICENSE("GPL"); -+MODULE_DESCRIPTION("Parser for NAND flash partitioning information in device tree"); -+MODULE_AUTHOR("Boris BREZILLON"); ---- a/include/linux/mtd/nand.h -+++ b/include/linux/mtd/nand.h -@@ -1014,6 +1014,23 @@ static inline int jedec_feature(struct n - : 0; - } - -+/** -+ * struct ofnandpart_data - struct used to retrieve NAND partitions from a DT -+ * node -+ * @parse: driver specific parser function -+ * @priv: driver private data -+ * @node: OF node containing NAND partitions -+ */ -+struct ofnandpart_data { -+ struct nand_part *(*parse)(void *priv, struct mtd_info *master, -+ struct device_node *pp); -+ void *priv; -+ struct device_node *node; -+}; -+ -+int ofnandpart_parse(struct mtd_info *master, -+ const struct ofnandpart_data *data); -+ - /* - * struct nand_sdr_timings - SDR NAND chip timings - * |