---

yaml --- r: 226618 b: refs/heads/master c: 596efe4 h: refs/heads/master v: v3
git-mirror · Dec 22, 2010 · 4a74ef4 · 4a74ef4
1 parent c0ec459
commit 4a74ef4
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Showing 5 changed files with 34 additions and 14 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 72e06d087204f3bc9acf281717b90ebf0b9731f7
+refs/heads/master: 596efe4792c50163578578bd4fe470f97652aad7
diff --git a/trunk/arch/arm/mach-omap2/control.c b/trunk/arch/arm/mach-omap2/control.c
@@ -26,6 +26,10 @@
 #include "pm.h"
 #include "control.h"
 
+/* Used by omap3_ctrl_save_padconf() */
+#define START_PADCONF_SAVE		0x2
+#define PADCONF_SAVE_DONE		0x1
+
 static void __iomem *omap2_ctrl_base;
 static void __iomem *omap4_ctrl_pad_base;
 
@@ -530,4 +534,31 @@ void omap3630_ctrl_disable_rta(void)
 	omap_ctrl_writel(OMAP36XX_RTA_DISABLE, OMAP36XX_CONTROL_MEM_RTA_CTRL);
 }
 
+/**
+ * omap3_ctrl_save_padconf - save padconf registers to scratchpad RAM
+ *
+ * Tell the SCM to start saving the padconf registers, then wait for
+ * the process to complete.  Returns 0 unconditionally, although it
+ * should also eventually be able to return -ETIMEDOUT, if the save
+ * does not complete.
+ *
+ * XXX This function is missing a timeout.  What should it be?
+ */
+int omap3_ctrl_save_padconf(void)
+{
+	u32 cpo;
+
+	/* Save the padconf registers */
+	cpo = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF);
+	cpo |= START_PADCONF_SAVE;
+	omap_ctrl_writel(cpo, OMAP343X_CONTROL_PADCONF_OFF);
+
+	/* wait for the save to complete */
+	while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
+		 & PADCONF_SAVE_DONE))
+		udelay(1);
+
+	return 0;
+}
+
 #endif /* CONFIG_ARCH_OMAP3 && CONFIG_PM */
diff --git a/trunk/arch/arm/mach-omap2/control.h b/trunk/arch/arm/mach-omap2/control.h
@@ -359,6 +359,7 @@ extern void omap3_control_save_context(void);
 extern void omap3_control_restore_context(void);
 extern void omap3_ctrl_write_boot_mode(u8 bootmode);
 extern void omap3630_ctrl_disable_rta(void);
+extern int omap3_ctrl_save_padconf(void);
 #else
 #define omap_ctrl_base_get()		0
 #define omap_ctrl_readb(x)		0

diff --git a/trunk/arch/arm/mach-omap2/pm34xx.c b/trunk/arch/arm/mach-omap2/pm34xx.c
@@ -133,16 +133,7 @@ static void omap3_disable_io_chain(void)
 
 static void omap3_core_save_context(void)
 {
-	u32 control_padconf_off;
-
-	/* Save the padconf registers */
-	control_padconf_off = omap_ctrl_readl(OMAP343X_CONTROL_PADCONF_OFF);
-	control_padconf_off |= START_PADCONF_SAVE;
-	omap_ctrl_writel(control_padconf_off, OMAP343X_CONTROL_PADCONF_OFF);
-	/* wait for the save to complete */
-	while (!(omap_ctrl_readl(OMAP343X_CONTROL_GENERAL_PURPOSE_STATUS)
-			& PADCONF_SAVE_DONE))
-		udelay(1);
+	omap3_ctrl_save_padconf();
 
 	/*
 	 * Force write last pad into memory, as this can fail in some

diff --git a/trunk/arch/arm/plat-omap/include/plat/prcm.h b/trunk/arch/arm/plat-omap/include/plat/prcm.h
@@ -32,9 +32,6 @@ void omap_prcm_arch_reset(char mode, const char *cmd);
 int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest,
 			 const char *name);
 
-#define START_PADCONF_SAVE 0x2
-#define PADCONF_SAVE_DONE  0x1
-
 #endif