---

yaml --- r: 299785 b: refs/heads/master c: a13b878 h: refs/heads/master i: 299783: dae88a6 v: v3
git-mirror · Apr 27, 2012 · 474028d · 474028d
1 parent b987514
commit 474028d
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Showing 3 changed files with 18 additions and 3 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9f9d27e3f3317f39c91c286b6184f1ca05452968
+refs/heads/master: a13b878780ea98d8415203c4502a8fc5bc614656
diff --git a/trunk/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h b/trunk/arch/arm/mach-pxa/include/mach/mfp-pxa2xx.h
@@ -17,6 +17,7 @@
  *
  * bit     23 - Input/Output (PXA2xx specific)
  * bit     24 - Wakeup Enable(PXA2xx specific)
+ * bit     25 - Keep Output  (PXA2xx specific)
  */
 
 #define MFP_DIR_IN		(0x0 << 23)
@@ -25,6 +26,12 @@
 #define MFP_DIR(x)		(((x) >> 23) & 0x1)
 
 #define MFP_LPM_CAN_WAKEUP	(0x1 << 24)
+
+/*
+ * MFP_LPM_KEEP_OUTPUT must be specified for pins that need to
+ * retain their last output level (low or high).
+ * Note: MFP_LPM_KEEP_OUTPUT has no effect on pins configured for input.
+ */
 #define MFP_LPM_KEEP_OUTPUT	(0x1 << 25)
 
 #define WAKEUP_ON_EDGE_RISE	(MFP_LPM_CAN_WAKEUP | MFP_LPM_EDGE_RISE)

diff --git a/trunk/arch/arm/mach-pxa/mfp-pxa2xx.c b/trunk/arch/arm/mach-pxa/mfp-pxa2xx.c
@@ -366,14 +366,22 @@ static int pxa2xx_mfp_suspend(void)
 	}
 
 	for (i = 0; i <= gpio_to_bank(pxa_last_gpio); i++) {
-
 		saved_gafr[0][i] = GAFR_L(i);
 		saved_gafr[1][i] = GAFR_U(i);
 		saved_gpdr[i] = GPDR(i * 32);
 		saved_pgsr[i] = PGSR(i);
+	}
 
-		GPDR(i * 32) = gpdr_lpm[i];
+	/* set GPDR bits taking into account MFP_LPM_KEEP_OUTPUT */
+	for (i = 0; i < pxa_last_gpio; i++) {
+		if ((gpdr_lpm[gpio_to_bank(i)] & GPIO_bit(i)) ||
+		    ((gpio_desc[i].config & MFP_LPM_KEEP_OUTPUT) &&
+		     (saved_gpdr[gpio_to_bank(i)] & GPIO_bit(i))))
+			GPDR(i) |= GPIO_bit(i);
+		else
+			GPDR(i) &= ~GPIO_bit(i);
 	}
+
 	return 0;
 }