From 17d4bfbf313b2ea163c2ff67dd89b8b56a56b861 Mon Sep 17 00:00:00 2001
From: patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3>
Date: Sat, 14 Jul 2012 19:38:14 +0000
Subject: [PATCH] PM update

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4941 42af7a65-404d-4744-a932-0658087f49c3
---
 configs/stm3210e-eval/pm/defconfig |  1 -
 configs/stm3210e-eval/src/up_lcd.c | 23 +++++++++++++++++++----
 configs/stm3210e-eval/src/up_pm.c  |  2 +-
 3 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/configs/stm3210e-eval/pm/defconfig b/configs/stm3210e-eval/pm/defconfig
index 5c1d57c842e..d4fb6e8b941 100644
--- a/configs/stm3210e-eval/pm/defconfig
+++ b/configs/stm3210e-eval/pm/defconfig
@@ -488,7 +488,6 @@ CONFIG_PM_BUTTONS_NAME4="DOWN"
 CONFIG_PM_BUTTONS_NAME5="LEFT"
 CONFIG_PM_BUTTONS_NAME6="RIGHT"
 CONFIG_PM_BUTTONS_NAME7="UP"
-CONFIG_PM_BUTTONS=1
 
 #
 # Settings for NXFLAT
diff --git a/configs/stm3210e-eval/src/up_lcd.c b/configs/stm3210e-eval/src/up_lcd.c
index 784adaa061e..42da4864a8e 100644
--- a/configs/stm3210e-eval/src/up_lcd.c
+++ b/configs/stm3210e-eval/src/up_lcd.c
@@ -1169,24 +1169,39 @@ static void stm3210e_pm_notify(struct pm_callback_s *cb , enum pm_state_e pmstat
             {
               duty--;
             }
-            putreg16((uint16_t)duty, STM32_TIM1_CCR1);
+
+          putreg16((uint16_t)duty, STM32_TIM1_CCR1);
 #endif
         }
         break;
 
       case(PM_IDLE):
         {
-          /* Entering IDLE mode - Turn display off */
+          /* Entering IDLE mode - Reduce LCD light */
 
 #ifdef CONFIG_LCD_PWM
-          putreg16(0, STM32_TIM1_CCR1);
+          frac = (g_lcddev.power << 16) / CONFIG_LCD_MAXPOWER;
+          duty = (g_lcddev.reload * frac) >> 16;
+          if (duty > 0)
+            {
+              duty--;
+            }
+
+          /* Reduce the LCD light to 50% of the MAXPOWER */
+
+          duty >>= 1;
+          putreg16((uint16_t)duty, STM32_TIM1_CCR1);
 #endif
         }
         break;
 
       case(PM_STANDBY):
         {
-          /* Entering STANDBY mode - Logic for PM_STANDBY goes here */
+          /* Entering STANDBY mode - Turn display off */
+
+#ifdef CONFIG_LCD_PWM
+          putreg16(0, STM32_TIM1_CCR1);
+#endif
         }
         break;
 
diff --git a/configs/stm3210e-eval/src/up_pm.c b/configs/stm3210e-eval/src/up_pm.c
index dd8a79b1c9a..3aa60bf5a9f 100644
--- a/configs/stm3210e-eval/src/up_pm.c
+++ b/configs/stm3210e-eval/src/up_pm.c
@@ -93,7 +93,7 @@ void up_pminitialize(void)
 
   pm_initialize();
 
-#ifdef CONFIG_PM_BUTTONS
+#if defined(CONFIG_IDLE_CUSTOM) && defined(CONFIG_PM_BUTTONS)
   /* Initialize the buttons to wake up the system from low power modes */
 
   up_pmbuttons();