[OpenWrt-Devel] [PATCH 1/9] mtd: rawnand: Add an is_last flag to nand_subop

[Boris Brezillon]

Some controllers need to know when they're passed the last subop so
they can de-assert the CE pin.

Signed-off-by: Boris Brezillon <boris.brezillon at collabora.com>
---
 drivers/mtd/nand/raw/nand_base.c | 2 ++
 include/linux/mtd/rawnand.h      | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index fa9ac18e97a1..f81b54634061 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -2101,6 +2101,8 @@ nand_op_parser_match_pat(const struct nand_op_parser_pattern *pat,
 	 */
 	ctx->subop.ninstrs = ninstrs;
 	ctx->subop.last_instr_end_off = instr_offset;
+	if (ctx->subop.instrs + ninstrs == end && !instr_offset)
+		ctx->subop.is_last = true;
 
 	return true;
 }
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 8e8d1a61e2fb..99f4ac47c8d3 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -701,6 +701,7 @@ struct nand_op_instr {
  *			   of the sub-operation
  * @last_instr_end_off: offset to end at (excluded) for the last instruction
  *			of the sub-operation
+ * @is_last: this sub-operation is the last one
  *
  * Both @first_instr_start_off and @last_instr_end_off only apply to data or
  * address instructions.
@@ -715,6 +716,7 @@ struct nand_subop {
 	unsigned int ninstrs;
 	unsigned int first_instr_start_off;
 	unsigned int last_instr_end_off;
+	bool is_last;
 };
 
 unsigned int nand_subop_get_addr_start_off(const struct nand_subop *subop,
-- 
2.25.2


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