Merge tag 'nand/for-4.18' of git://git.infradead.org/linux-mtd into mtd/next

Core changes:
- Add Miquel as a NAND maintainer
- Add access mode to the nand_page_io_req struct
- Fix kernel-doc in rawnand.h
- Support bit-wise majority to recover from corrupted ONFI parameter
  pages
- Stop checking FAIL bit after a SET_FEATURES, as documented in the
  ONFI spec

Raw NAND Driver changes:
- Fix and cleanup the error path of many NAND controller drivers
- GPMI:
  * Cleanup/simplification of a few aspects in the driver
  * Take ECC setup specified in the DT into account
- sunxi: remove support for GPIO-based R/B polling
- MTK:
  * Use of_device_get_match_data() instead of of_match_device()
  * Add an entry in MAINTAINERS for this driver
  * Fix nand-ecc-step-size and nand-ecc-strength description in the DT
    bindings doc
- fsl_ifc: fix ->cmdfunc() to read more than one ONFI parameter page

OneNAND driver changes:
- samsung: use dev_get_drvdata() instead of platform_get_drvdata()

2 files changed, 29 insertions, 9 deletions

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index 792ea5c26329..abe975c87b90 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -86,6 +86,7 @@ struct nand_pos {
  * @ooboffs: the OOB offset within the page
  * @ooblen: the number of OOB bytes to read from/write to this page
  * @oobbuf: buffer to store OOB data in or get OOB data from
+ * @mode: one of the %MTD_OPS_XXX mode
  *
  * This object is used to pass per-page I/O requests to NAND sub-layers. This
  * way all useful information are already formatted in a useful way and
@@ -106,6 +107,7 @@ struct nand_page_io_req {
 		const void *out;
 		void *in;
 	} oobbuf;
+	int mode;
 };
 
 /**
@@ -599,6 +601,7 @@ static inline void nanddev_io_iter_init(struct nand_device *nand,
 {
 	struct mtd_info *mtd = nanddev_to_mtd(nand);
 
+	iter->req.mode = req->mode;
 	iter->req.dataoffs = nanddev_offs_to_pos(nand, offs, &iter->req.pos);
 	iter->req.ooboffs = req->ooboffs;
 	iter->oobbytes_per_page = mtd_oobavail(mtd, req);
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 5dad59b31244..a206172ec23b 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -28,7 +28,14 @@ struct nand_flash_dev;
 struct device_node;
 
 /* Scan and identify a NAND device */
-int nand_scan(struct mtd_info *mtd, int max_chips);
+int nand_scan_with_ids(struct mtd_info *mtd, int max_chips,
+		       struct nand_flash_dev *ids);
+
+static inline int nand_scan(struct mtd_info *mtd, int max_chips)
+{
+	return nand_scan_with_ids(mtd, max_chips, NULL);
+}
+
 /*
  * Separate phases of nand_scan(), allowing board driver to intervene
  * and override command or ECC setup according to flash type.
@@ -740,8 +747,9 @@ enum nand_data_interface_type {
 
 /**
  * struct nand_data_interface - NAND interface timing
- * @type:	type of the timing
- * @timings:	The timing, type according to @type
+ * @type:	 type of the timing
+ * @timings:	 The timing, type according to @type
+ * @timings.sdr: Use it when @type is %NAND_SDR_IFACE.
  */
 struct nand_data_interface {
 	enum nand_data_interface_type type;
@@ -798,8 +806,9 @@ struct nand_op_addr_instr {
 /**
  * struct nand_op_data_instr - Definition of a data instruction
  * @len: number of data bytes to move
- * @in: buffer to fill when reading from the NAND chip
- * @out: buffer to read from when writing to the NAND chip
+ * @buf: buffer to fill
+ * @buf.in: buffer to fill when reading from the NAND chip
+ * @buf.out: buffer to read from when writing to the NAND chip
  * @force_8bit: force 8-bit access
  *
  * Please note that "in" and "out" are inverted from the ONFI specification
@@ -842,9 +851,13 @@ enum nand_op_instr_type {
 /**
  * struct nand_op_instr - Instruction object
  * @type: the instruction type
- * @cmd/@addr/@data/@waitrdy: extra data associated to the instruction.
- *                            You'll have to use the appropriate element
- *                            depending on @type
+ * @ctx:  extra data associated to the instruction. You'll have to use the
+ *        appropriate element depending on @type
+ * @ctx.cmd: use it if @type is %NAND_OP_CMD_INSTR
+ * @ctx.addr: use it if @type is %NAND_OP_ADDR_INSTR
+ * @ctx.data: use it if @type is %NAND_OP_DATA_IN_INSTR
+ *	      or %NAND_OP_DATA_OUT_INSTR
+ * @ctx.waitrdy: use it if @type is %NAND_OP_WAITRDY_INSTR
  * @delay_ns: delay the controller should apply after the instruction has been
  *	      issued on the bus. Most modern controllers have internal timings
  *	      control logic, and in this case, the controller driver can ignore
@@ -997,7 +1010,9 @@ struct nand_op_parser_data_constraints {
  * struct nand_op_parser_pattern_elem - One element of a pattern
  * @type: the instructuction type
  * @optional: whether this element of the pattern is optional or mandatory
- * @addr/@data: address or data constraint (number of cycles or data length)
+ * @ctx: address or data constraint
+ * @ctx.addr: address constraint (number of cycles)
+ * @ctx.data: data constraint (data length)
  */
 struct nand_op_parser_pattern_elem {
 	enum nand_op_instr_type type;
@@ -1224,6 +1239,8 @@ int nand_op_parser_exec_op(struct nand_chip *chip,
  *			devices.
  * @priv:		[OPTIONAL] pointer to private chip data
  * @manufacturer:	[INTERN] Contains manufacturer information
+ * @manufacturer.desc:	[INTERN] Contains manufacturer's description
+ * @manufacturer.priv:	[INTERN] Contains manufacturer private information
  */
 
 struct nand_chip {