linux-kernel - [PATCH 1/3] mtd: abi: Introduce MTD_NO_MULTI_PASS

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Date:   Mon, 12 Oct 2020 23:34:02 +0530
From:   Pratyush Yadav <p.yadav@...com>
To:     Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
CC:     Pratyush Yadav <p.yadav@...com>
Subject: [PATCH 1/3] mtd: abi: Introduce MTD_NO_MULTI_PASS_WRITE

Some flashes like the Semper S28 family do not support multi-pass page
programming. Introduce the flag MTD_NO_MULTI_PASS_WRITE to allow telling
upper layers this information so they can issue write commands with this
limitation in mind.

Signed-off-by: Pratyush Yadav <p.yadav@...com>
---
 include/uapi/mtd/mtd-abi.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/uapi/mtd/mtd-abi.h b/include/uapi/mtd/mtd-abi.h
index 65b9db936557..a2cab30adac5 100644
--- a/include/uapi/mtd/mtd-abi.h
+++ b/include/uapi/mtd/mtd-abi.h
@@ -105,6 +105,7 @@ struct mtd_write_req {
 #define MTD_NO_ERASE		0x1000	/* No erase necessary */
 #define MTD_POWERUP_LOCK	0x2000	/* Always locked after reset */
 #define MTD_SLC_ON_MLC_EMULATION 0x4000	/* Emulate SLC behavior on MLC NANDs */
+#define MTD_NO_MULTI_PASS_WRITE	0x8000
 
 /* Some common devices / combinations of capabilities */
 #define MTD_CAP_ROM		0
-- 
2.28.0