From d48c14a36cc386389cc8159ab7b88d5e668806df Mon Sep 17 00:00:00 2001
From: Gregory Nutt <gnutt@nuttx.org>
Date: Mon, 6 May 2013 08:34:53 -0600
Subject: mio283qt2.c: Need select/deselect LCD in setpower method;
 hwinitialize did not deselect LCD

---
 nuttx/ChangeLog                                   |  5 ++++-
 nuttx/configs/pirelli_dpl10/nsh_highram/ld.script | 19 +++++++++--------
 nuttx/drivers/lcd/mio283qt2.c                     | 26 +++++++++++++++++++----
 3 files changed, 36 insertions(+), 14 deletions(-)

diff --git a/nuttx/ChangeLog b/nuttx/ChangeLog
index 98f0a740d..e7286abe0 100644
--- a/nuttx/ChangeLog
+++ b/nuttx/ChangeLog
@@ -4673,4 +4673,7 @@
 	  (from Craig Comstock via Alan Alan Carvalho de Assis, 2013-5-3).
 	* arch/arm/src/calypso:  Fix some compilation warnings (2013-5-5).
 	* configs/pirelli_dpl10/nsh_highram:  Converted to use the
-	  kconfig-frontends tools (2013-5-5).
\ No newline at end of file
+	  kconfig-frontends tools (2013-5-5).
+	* drivers/lcd/mio283qt2.c:  LCD was not being selected in setpower
+	  method (also not being deselected in hwinitialize function)
+	 (2013-5-6).
diff --git a/nuttx/configs/pirelli_dpl10/nsh_highram/ld.script b/nuttx/configs/pirelli_dpl10/nsh_highram/ld.script
index 35fa84728..5bdefbe06 100644
--- a/nuttx/configs/pirelli_dpl10/nsh_highram/ld.script
+++ b/nuttx/configs/pirelli_dpl10/nsh_highram/ld.script
@@ -13,8 +13,8 @@ MEMORY
 {
     /* 0x800000-0x83ffff */
     /* compal-loaded binary: our text, initialized data */
-    LRAM (rw) : ORIGIN = 0x00800000, LENGTH = 0x00020000
-    TRAM (rw) : ORIGIN = 0x00820000, LENGTH = 0x00010000
+    LRAM (rw) : ORIGIN = 0x00800000, LENGTH = 128K
+    TRAM (rw) : ORIGIN = 0x00820000, LENGTH = 64K
     /* compal-loaded binary: our unitialized data, stacks, heap */
     IRAM (rw) : ORIGIN = 0x00830000, LENGTH = 0x00010000
 }
@@ -34,7 +34,7 @@ SECTIONS
         PROVIDE(__start = .);
         KEEP(*(.text.start))
         *(.text.start)
-    } > TRAM
+    } > LRAM
 
     /* exception vectors from 0x80001c to 0x800034 */
     .text.exceptions 0x80001c : AT (LOADADDR(.text.start) + SIZEOF(.text.start)) {
@@ -46,8 +46,7 @@ SECTIONS
 
     /* code */
     . = ALIGN(4);
-    .text (LOADADDR(.text.exceptions) + SIZEOF(.text.exceptions)) :
-          AT (LOADADDR(.text.exceptions) + SIZEOF(.text.exceptions)) {
+    .text : {
         /* regular code */
         *(.text*)
         /* always-in-ram code */
@@ -55,7 +54,7 @@ SECTIONS
         /* gcc voodoo */
         *(.glue_7t) *(.glue_7) *(.vfp11_veneer) *(.v4_bx)
         . = ALIGN(4);
-    } > TRAM
+    } > LRAM
     PROVIDE(_text_start = LOADADDR(.text));
     PROVIDE(_text_end = LOADADDR(.text) + SIZEOF(.text));
 
@@ -67,7 +66,7 @@ SECTIONS
         KEEP(*(SORT(.ctors)))
         /* end of list */
         LONG(0)
-    } > TRAM
+    } > LRAM
     PROVIDE(_ctor_start = LOADADDR(.ctors));
     PROVIDE(_ctor_end = LOADADDR(.ctors) + SIZEOF(.ctors));
 
@@ -79,7 +78,7 @@ SECTIONS
         KEEP(*(SORT(.dtors)))
         /* end of list */
         LONG(0)
-    } > TRAM
+    } > LRAM
     PROVIDE(_dtor_start = LOADADDR(.dtors));
     PROVIDE(_dtor_end = LOADADDR(.dtors) + SIZEOF(.dtors));
 
@@ -87,14 +86,16 @@ SECTIONS
     . = ALIGN(4);
     .rodata : {
         *(.rodata*)
-    } > TRAM
+    } > LRAM
     PROVIDE(_rodata_start = LOADADDR(.rodata));
     PROVIDE(_rodata_end = LOADADDR(.rodata) + SIZEOF(.rodata));
 
     /* initialized data */
     . = ALIGN(4);
     .data : {
+        _sdata = ABSOLUTE(.);
         *(.data)
+        _edata = ABSOLUTE(.);
     } > TRAM
     PROVIDE(_data_start = LOADADDR(.data));
     PROVIDE(_data_end = LOADADDR(.data) + SIZEOF(.data));
diff --git a/nuttx/drivers/lcd/mio283qt2.c b/nuttx/drivers/lcd/mio283qt2.c
index 4c8835eef..3a1087c20 100644
--- a/nuttx/drivers/lcd/mio283qt2.c
+++ b/nuttx/drivers/lcd/mio283qt2.c
@@ -690,6 +690,10 @@ static int mio283qt2_getpower(FAR struct lcd_dev_s *dev)
 
 static int mio283qt2_poweroff(FAR struct mio283qt2_lcd_s *lcd)
 {
+  /* Select the LCD */
+
+  lcd->select(lcd);
+
   /* Set the backlight off */
 
   lcd->backlight(lcd, 0);
@@ -698,6 +702,10 @@ static int mio283qt2_poweroff(FAR struct mio283qt2_lcd_s *lcd)
 
   mio283qt2_putreg(lcd, 0x28, 0x0000); /* GON=0, DTE=0, D=0 */
 
+  /* Deselect the LCD */
+
+  lcd->deselect(lcd);
+
   /* Remember the power off state */
 
   g_lcddev.power = 0;
@@ -725,6 +733,10 @@ static int mio283qt2_setpower(FAR struct lcd_dev_s *dev, int power)
 
   if (power > 0)
     {
+      /* Select the LCD */
+
+      lcd->select(lcd);
+
       /* Set the backlight level */
 
       lcd->backlight(lcd, power);
@@ -733,12 +745,16 @@ static int mio283qt2_setpower(FAR struct lcd_dev_s *dev, int power)
        * D=ON(3) CM=0 DTE=1 GON=1 SPT=0 VLE=0 PT=0
        */
 
-      /* Display on */
-
       mio283qt2_putreg(lcd, 0x28, 0x0038); /* GON=1, DTE=1, D=2 */
       up_mdelay(40);
       mio283qt2_putreg(lcd, 0x28, 0x003c); /* GON=1, DTE=1, D=3 */
 
+      /* Deselect the LCD */
+
+      lcd->deselect(lcd);
+
+      /* Remember the power on state */
+
       g_lcddev.power = power;
     }
   else
@@ -793,6 +809,7 @@ static inline int mio283qt2_hwinitialize(FAR struct mio283qt2_dev_s *priv)
 #ifndef CONFIG_LCD_NOGETRUN
   uint16_t id;
 #endif
+  int ret;
 
   /* Select the LCD */
 
@@ -903,19 +920,20 @@ static inline int mio283qt2_hwinitialize(FAR struct mio283qt2_dev_s *priv)
       /* Window setting */
 
       mio283qt2_setarea(lcd, 0, 0, (MIO283QT2_XRES-1), (MIO283QT2_YRES-1));
-      return OK;
+      ret = OK;
     }
 #ifndef CONFIG_LCD_NOGETRUN
   else
     {
       lcddbg("Unsupported LCD type\n");
-      return -ENODEV;
+      ret = -ENODEV;
     }
 #endif
 
   /* De-select the LCD */
 
   lcd->deselect(lcd);
+  return ret;
 }
 
  /*************************************************************************************
-- 
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