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Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 4598/2: OSIRIS: Ensure we do not get nRSTOUT during suspend
  [ARM] 4597/2: OSIRIS: ensure CPLD0 is preserved after suspend
Linus Torvalds 18 年之前
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共有 1 個文件被更改,包括 18 次插入0 次删除
  1. 18 0
      arch/arm/mach-s3c2440/mach-osiris.c

+ 18 - 0
arch/arm/mach-s3c2440/mach-osiris.c

@@ -276,7 +276,21 @@ static unsigned char pm_osiris_ctrl0;
 
 static int osiris_pm_suspend(struct sys_device *sd, pm_message_t state)
 {
+	unsigned int tmp;
+
 	pm_osiris_ctrl0 = __raw_readb(OSIRIS_VA_CTRL0);
+	tmp = pm_osiris_ctrl0 & ~OSIRIS_CTRL0_NANDSEL;
+
+	/* ensure correct NAND slot is selected on resume */
+	if ((pm_osiris_ctrl0 & OSIRIS_CTRL0_BOOT_INT) == 0)
+	        tmp |= 2;
+
+	__raw_writeb(tmp, OSIRIS_VA_CTRL0);
+
+	/* ensure that an nRESET is not generated on resume. */
+	s3c2410_gpio_setpin(S3C2410_GPA21, 1);
+	s3c2410_gpio_cfgpin(S3C2410_GPA21, S3C2410_GPA21_OUT);
+
 	return 0;
 }
 
@@ -285,6 +299,10 @@ static int osiris_pm_resume(struct sys_device *sd)
 	if (pm_osiris_ctrl0 & OSIRIS_CTRL0_FIX8)
 		__raw_writeb(OSIRIS_CTRL1_FIX8, OSIRIS_VA_CTRL1);
 
+	__raw_writeb(pm_osiris_ctrl0, OSIRIS_VA_CTRL0);
+
+	s3c2410_gpio_cfgpin(S3C2410_GPA21, S3C2410_GPA21_nRSTOUT);
+
 	return 0;
 }