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From:   =?UTF-8?q?Guido=20G=C3=BCnther?= <agx@sigxcpu.org>
To:     Thierry Reding <thierry.reding@gmail.com>,
        Sam Ravnborg <sam@ravnborg.org>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
        "David S. Miller" <davem@davemloft.net>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Nicolas Ferre <nicolas.ferre@microchip.com>,
        "Paul E. McKenney" <paulmck@linux.ibm.com>,
        dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, Purism Kernel Team <kernel@puri.sm>
Subject: [PATCH v2 2/4] drm/panel: jh057n00900: Don't use magic constant
Date:   Wed, 26 Jun 2019 12:37:49 +0200
Message-Id: <7f50fa6de2ae029111f158f8ea7fd69a0903eb97.1561542477.git.agx@sigxcpu.org>
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0xBF isn't in any ST7703 data sheet so mark it as unknown. This avoids
confusion on whether there is a missing command in that
dsi_generic_write_seq() call.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
---
 drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
index 6dcb692c4701..b8a069055fbc 100644
--- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
+++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
@@ -33,6 +33,7 @@
 #define ST7703_CMD_SETEXTC	 0xB9
 #define ST7703_CMD_SETMIPI	 0xBA
 #define ST7703_CMD_SETVDC	 0xBC
+#define ST7703_CMD_UNKNOWN0	 0xBF
 #define ST7703_CMD_SETSCR	 0xC0
 #define ST7703_CMD_SETPOWER	 0xC1
 #define ST7703_CMD_SETPANEL	 0xCC
@@ -94,7 +95,7 @@ static int jh057n_init_sequence(struct jh057n *ctx)
 	msleep(20);
 
 	dsi_generic_write_seq(dsi, ST7703_CMD_SETVCOM, 0x3F, 0x3F);
-	dsi_generic_write_seq(dsi, 0xBF, 0x02, 0x11, 0x00);
+	dsi_generic_write_seq(dsi, ST7703_CMD_UNKNOWN0, 0x02, 0x11, 0x00);
 	dsi_generic_write_seq(dsi, ST7703_CMD_SETGIP1,
 			      0x82, 0x10, 0x06, 0x05, 0x9E, 0x0A, 0xA5, 0x12,
 			      0x31, 0x23, 0x37, 0x83, 0x04, 0xBC, 0x27, 0x38,
-- 
2.20.1