linux-kernel - [PATCH v5 3/5] mtd: nand: Add max_bb_per_die and blocks_per_die fields to nand

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Message-ID: <1478536573-17610-4-git-send-email-zach.brown@ni.com>
Date:   Mon, 7 Nov 2016 10:36:11 -0600
From:   Zach Brown <zach.brown@...com>
To:     <dwmw2@...radead.org>
CC:     <computersforpeace@...il.com>,
        <boris.brezillon@...e-electrons.com>, <richard@....at>,
        <dedekind1@...il.com>, <linux-mtd@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v5 3/5] mtd: nand: Add max_bb_per_die and blocks_per_die fields to nand_chip

The fields max_bb_per_die and blocks_per_die are useful determining the
number of bad blocks a MTD needs to allocate. How they are set will
depend on if the chip is ONFI, JEDEC or a full-id entry in the nand_ids
table.

Signed-off-by: Zach Brown <zach.brown@...com>
Acked-by: Boris Brezillon <boris.brezillon@...e-electron.com>
---
 include/linux/mtd/nand.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/include/linux/mtd/nand.h b/include/linux/mtd/nand.h
index d8905a2..8e9dce1 100644
--- a/include/linux/mtd/nand.h
+++ b/include/linux/mtd/nand.h
@@ -771,6 +771,9 @@ nand_get_sdr_timings(const struct nand_data_interface *conf)
  *			supported, 0 otherwise.
  * @jedec_params:	[INTERN] holds the JEDEC parameter page when JEDEC is
  *			supported, 0 otherwise.
+ * @max_bb_per_die:	[INTERN] the max number of bad blocks each die of a
+ *			this nand device will encounter their life times.
+ * @blocks_per_die:	[INTERN] The number of PEBs in a die
  * @read_retries:	[INTERN] the number of read retry modes supported
  * @onfi_set_features:	[REPLACEABLE] set the features for ONFI nand
  * @onfi_get_features:	[REPLACEABLE] get the features for ONFI nand
@@ -853,6 +856,8 @@ struct nand_chip {
 		struct nand_onfi_params	onfi_params;
 		struct nand_jedec_params jedec_params;
 	};
+	u16 max_bb_per_die;
+	u32 blocks_per_die;
 
 	struct nand_data_interface *data_interface;
 
-- 
2.7.4