linux-kernel - [PATCH v3 11/16] mmc: tmio: deprecate "toshiba,mmc-wrprotect-disable" DT property

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Message-Id: <1516206496-16612-12-git-send-email-yamada.masahiro@socionext.com>
Date:   Thu, 18 Jan 2018 01:28:11 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     linux-mmc@...r.kernel.org,
        Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     Ulf Magnusson <ulfalizer@...il.com>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Simon Horman <horms+renesas@...ge.net.au>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        linux-renesas-soc@...r.kernel.org,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        devicetree@...r.kernel.org, Rob Herring <robh@...nel.org>,
        linux-kernel@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ulf Hansson <ulf.hansson@...aro.org>
Subject: [PATCH v3 11/16] mmc: tmio: deprecate "toshiba,mmc-wrprotect-disable" DT property

This property is equivalent to "disable-wp" defined in
Documentation/devicetree/bindings/mmc/tmio_mmc.txt

The TMIO MMC core calls mmc_of_parse(), and it sets
MMC_CAP2_NO_WRITE_PROTECT if "disable-wp" property is present.

We do not need a vendor-specific property to do the same thing.

Let's remove the description from the dt-binding to prevent new boards
from using it.

I am keeping the driver code for existing DT files, but added
comments that this is deprecated.

Signed-off-by: Masahiro Yamada <yamada.masahiro@...ionext.com>
---

Changes in v3:
  - newly added

Changes in v2: None

 Documentation/devicetree/bindings/mmc/tmio_mmc.txt | 1 -
 drivers/mmc/host/tmio_mmc_core.c                   | 5 +++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt
index 3c67624..cb7d40e 100644
--- a/Documentation/devicetree/bindings/mmc/tmio_mmc.txt
+++ b/Documentation/devicetree/bindings/mmc/tmio_mmc.txt
@@ -49,7 +49,6 @@ Required properties:
 	  2: R7S72100
 
 Optional properties:
-- toshiba,mmc-wrprotect-disable: write-protect detection is unavailable
 - pinctrl-names: should be "default", "state_uhs"
 - pinctrl-0: should contain default/high speed pin ctrl
 - pinctrl-1: should contain uhs mode pin ctrl
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index 7ad3433c..f30ac69 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -1134,6 +1134,11 @@ static void tmio_mmc_of_parse(struct platform_device *pdev,
 	if (!np)
 		return;
 
+	/*
+	 * DEPRECATED:
+	 * For new platforms, please use "disable-wp" instead of
+	 * "toshiba,mmc-wrprotect-disable"
+	 */
 	if (of_get_property(np, "toshiba,mmc-wrprotect-disable", NULL))
 		mmc->caps2 |= MMC_CAP2_NO_WRITE_PROTECT;
 }
-- 
2.7.4