mtd: rawnand: Propage CS selection to sub operations

Some controller using the instruction parse infrastructure might need
to know which CS a specific sub-operation is targeting. Let's propagate
this information.

Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200505101353.1776394-2-boris.brezillon@collabora.com

diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index 2d2a216..c4d6d54 100644 (file)
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -2174,7 +2174,7 @@ static void nand_op_parser_trace(const struct nand_op_parser_ctx *ctx)
        char *prefix = "      ";
        unsigned int i;
 
-       pr_debug("executing subop:\n");
+       pr_debug("executing subop (CS%d):\n", ctx->subop.cs);
 
        for (i = 0; i < ctx->ninstrs; i++) {
                instr = &ctx->instrs[i];
@@ -2238,6 +2238,7 @@ int nand_op_parser_exec_op(struct nand_chip *chip,
                           const struct nand_operation *op, bool check_only)
 {
        struct nand_op_parser_ctx ctx = {
+               .subop.cs = op->cs,
                .subop.instrs = op->instrs,
                .instrs = op->instrs,
                .ninstrs = op->ninstrs,

diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 0f45b69..a3bac88 100644 (file)
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -709,6 +709,7 @@ struct nand_op_instr {
 
 /**
  * struct nand_subop - a sub operation
+ * @cs: the CS line to select for this NAND sub-operation
  * @instrs: array of instructions
  * @ninstrs: length of the @instrs array
  * @first_instr_start_off: offset to start from for the first instruction
@@ -724,6 +725,7 @@ struct nand_op_instr {
  * controller driver.
  */
 struct nand_subop {
+       unsigned int cs;
        const struct nand_op_instr *instrs;
        unsigned int ninstrs;
        unsigned int first_instr_start_off;