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From: Brian Norris <computersforpeace@gmail.com>
To: <linux-mtd@lists.infradead.org>
Cc: "Brian Norris" <computersforpeace@gmail.com>,
	"Rafał Miłecki" <zajec5@gmail.com>,
	"Ezequiel Garcia" <ezequiel@vanguardiasur.com.ar>,
	"Boris Brezillon" <boris.brezillon@free-electrons.com>,
	linux-kernel@vger.kernel.org,
	"Bayi Cheng" <bayi.cheng@mediatek.com>,
	"Marek Vasut" <marex@denx.de>,
	djkurtz@chromium.org
Subject: [PATCH 8/8] mtd: spi-nor: support lock/unlock for a few Winbond chips
Date: Wed, 27 Jan 2016 21:51:47 -0800	[thread overview]
Message-ID: <1453960307-10181-9-git-send-email-computersforpeace@gmail.com> (raw)
In-Reply-To: <1453960307-10181-1-git-send-email-computersforpeace@gmail.com>

These are recent Winbond models that are known to have lock/unlock
support via writing the Status Register, and that also support the TB
(Top/Bottom) protection bit.

Tested on w25q32dw.

[Note on style: these entries are getting pretty long lines, so I picked
a style that seems reasonable for splitting up the flags separate from
the other mostly-similar fields.]

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
---
 drivers/mtd/spi-nor/spi-nor.c |   18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index 5e84e3c543aa..cd3908e26712 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -942,11 +942,23 @@ static const struct flash_info spi_nor_ids[] = {
 	{ "w25x16", INFO(0xef3015, 0, 64 * 1024,  32, SECT_4K) },
 	{ "w25x32", INFO(0xef3016, 0, 64 * 1024,  64, SECT_4K) },
 	{ "w25q32", INFO(0xef4016, 0, 64 * 1024,  64, SECT_4K) },
-	{ "w25q32dw", INFO(0xef6016, 0, 64 * 1024,  64, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+	{
+		"w25q32dw", INFO(0xef6016, 0, 64 * 1024,  64,
+			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+			SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+	},
 	{ "w25x64", INFO(0xef3017, 0, 64 * 1024, 128, SECT_4K) },
 	{ "w25q64", INFO(0xef4017, 0, 64 * 1024, 128, SECT_4K) },
-	{ "w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
-	{ "w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) },
+	{
+		"w25q64dw", INFO(0xef6017, 0, 64 * 1024, 128,
+			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+			SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+	},
+	{
+		"w25q128fw", INFO(0xef6018, 0, 64 * 1024, 256,
+			SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ |
+			SPI_NOR_HAS_LOCK | SPI_NOR_HAS_TB)
+	},
 	{ "w25q80", INFO(0xef5014, 0, 64 * 1024,  16, SECT_4K) },
 	{ "w25q80bl", INFO(0xef4014, 0, 64 * 1024,  16, SECT_4K) },
 	{ "w25q128", INFO(0xef4018, 0, 64 * 1024, 256, SECT_4K) },
-- 
1.7.9.5

  parent reply	other threads:[~2016-01-28  5:52 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-28  5:51 [PATCH 0/8] mtd: spi-nor: locking fixes and updates Brian Norris
2016-01-28  5:51 ` [PATCH 1/8] mtd: spi-nor: wait for SR_WIP to clear on initial unlock Brian Norris
2016-01-28  5:51 ` [PATCH 2/8] mtd: spi-nor: guard against underflows in stm_is_locked_sr Brian Norris
2016-01-28  5:51 ` [PATCH 3/8] mtd: spi-nor: silently drop lock/unlock for already locked/unlocked region Brian Norris
2016-01-28  5:51 ` [PATCH 4/8] mtd: spi-nor: disallow further writes to SR if WP# is low Brian Norris
2016-01-28 14:36   ` Ezequiel Garcia
2016-01-28 17:59     ` Brian Norris
2016-01-28 19:24       ` Ezequiel Garcia
2016-01-28 19:48         ` Brian Norris
2016-01-29 13:22           ` Ezequiel Garcia
2016-01-29 19:23             ` Brian Norris
2016-01-28  5:51 ` [PATCH 5/8] mtd: spi-nor: use BIT() for flash_info flags Brian Norris
2016-01-28  5:51 ` [PATCH 6/8] mtd: spi-nor: add SPI_NOR_HAS_LOCK flag Brian Norris
2016-01-28  5:51 ` [RFC PATCH 7/8] mtd: spi-nor: add TB (Top/Bottom) protect support Brian Norris
2016-01-29  2:36   ` Brian Norris
2016-01-28  5:51 ` Brian Norris [this message]
2016-01-28 14:42 ` [PATCH 0/8] mtd: spi-nor: locking fixes and updates Ezequiel Garcia

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