linux-kernel - [PATCH v3] staging: panel: fix lcd type

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Date:	Tue, 24 Mar 2015 16:29:32 +0530
From:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Willy Tarreau <willy@...a-x.org>
Cc:	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>,
	<stable@...r.kernel.org>
Subject: [PATCH v3] staging: panel: fix lcd type

the lcd type as defined in the Kconfig is not matching in the code.
as a result the rs, rw and en pins were getting interchanged.
Kconfig defines the value of PANEL_LCD to be 1 if we select custom
configuration but in the code LCD_TYPE_CUSTOM is defined as 5.

my hardware is LCD_TYPE_CUSTOM, but the pins were assigned to it
as pins of LCD_TYPE_OLD, and it was not working.
Now values are corrected with referenece to the values defined in
Kconfig and it is working.
checked on JHD204A lcd with LCD_TYPE_CUSTOM configuration.

Cc: <stable@...r.kernel.org> # 2.6.32+
Signed-off-by: Sudip Mukherjee <sudip@...torindia.org>
---

v3: added the module_parameters
v2: cc-ed  stable

 drivers/staging/panel/panel.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c
index b7ffdfb..ea54fb4 100644
--- a/drivers/staging/panel/panel.c
+++ b/drivers/staging/panel/panel.c
@@ -335,11 +335,11 @@ static unsigned char lcd_bits[LCD_PORTS][LCD_BITS][BIT_STATES];
  * LCD types
  */
 #define LCD_TYPE_NONE		0
-#define LCD_TYPE_OLD		1
-#define LCD_TYPE_KS0074		2
-#define LCD_TYPE_HANTRONIX	3
-#define LCD_TYPE_NEXCOM		4
-#define LCD_TYPE_CUSTOM		5
+#define LCD_TYPE_CUSTOM		1
+#define LCD_TYPE_OLD		2
+#define LCD_TYPE_KS0074		3
+#define LCD_TYPE_HANTRONIX	4
+#define LCD_TYPE_NEXCOM		5
 
 /*
  * keypad types
@@ -500,7 +500,7 @@ MODULE_PARM_DESC(keypad_type,
 static int lcd_type = NOT_SET;
 module_param(lcd_type, int, 0000);
 MODULE_PARM_DESC(lcd_type,
-		 "LCD type: 0=none, 1=old //, 2=serial ks0074, 3=hantronix //, 4=nexcom //, 5=compiled-in");
+		 "LCD type: 0=none, 1=compiled-in, 2=old, 3=serial ks0074, 4=hantronix, 5=nexcom");
 
 static int lcd_height = NOT_SET;
 module_param(lcd_height, int, 0000);
-- 
1.8.1.2

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