Merge branch 'next' into for-linus

2 files changed, 41 insertions, 99 deletions

diff --git a/drivers/input/serio/i8042-ppcio.h b/drivers/input/serio/i8042-ppcio.h
index 2906e1b..f708c75 100644
--- a/drivers/input/serio/i8042-ppcio.h
+++ b/drivers/input/serio/i8042-ppcio.h
@@ -52,81 +52,6 @@ static inline void i8042_platform_exit(void)
 {
 }
 
-#elif defined(CONFIG_SPRUCE)
-
-#define I8042_KBD_IRQ 22
-#define I8042_AUX_IRQ 21
-
-#define I8042_KBD_PHYS_DESC "spruceps2/serio0"
-#define I8042_AUX_PHYS_DESC "spruceps2/serio1"
-#define I8042_MUX_PHYS_DESC "spruceps2/serio%d"
-
-#define I8042_COMMAND_REG 0xff810000
-#define I8042_DATA_REG 0xff810001
-
-static inline int i8042_read_data(void)
-{
-	unsigned long kbd_data;
-
-	__raw_writel(0x00000088, 0xff500008);
-	eieio();
-
-	__raw_writel(0x03000000, 0xff50000c);
-	eieio();
-
-	asm volatile("lis     7,0xff88        \n\
-		      lswi    6,7,0x8         \n\
-		      mr      %0,6"
-	              : "=r" (kbd_data) :: "6", "7");
-
-	__raw_writel(0x00000000, 0xff50000c);
-	eieio();
-
-	return (unsigned char)(kbd_data >> 24);
-}
-
-static inline int i8042_read_status(void)
-{
-	unsigned long kbd_status;
-
-	__raw_writel(0x00000088, 0xff500008);
-	eieio();
-
-	__raw_writel(0x03000000, 0xff50000c);
-	eieio();
-
-	asm volatile("lis     7,0xff88        \n\
-		      ori     7,7,0x8         \n\
-		      lswi    6,7,0x8         \n\
-		      mr      %0,6"
-		      : "=r" (kbd_status) :: "6", "7");
-
-	__raw_writel(0x00000000, 0xff50000c);
-	eieio();
-
-	return (unsigned char)(kbd_status >> 24);
-}
-
-static inline void i8042_write_data(int val)
-{
-	*((unsigned char *)0xff810000) = (char)val;
-}
-
-static inline void i8042_write_command(int val)
-{
-	*((unsigned char *)0xff810001) = (char)val;
-}
-
-static inline int i8042_platform_init(void)
-{
-	i8042_reset = 1;
-	return 0;
-}
-
-static inline void i8042_platform_exit(void)
-{
-}
-
 #else
 
 #include "i8042-io.h"
diff --git a/drivers/input/serio/i8042.c b/drivers/input/serio/i8042.c
index 6440a8f..258b98b 100644
--- a/drivers/input/serio/i8042.c
+++ b/drivers/input/serio/i8042.c
@@ -861,9 +861,6 @@ static int i8042_controller_selftest(void)
 	unsigned char param;
 	int i = 0;
 
-	if (!i8042_reset)
-		return 0;
-
 	/*
 	 * We try this 5 times; on some really fragile systems this does not
 	 * take the first time...
@@ -1020,7 +1017,8 @@ static void i8042_controller_reset(void)
  * Reset the controller if requested.
  */
 
-	i8042_controller_selftest();
+	if (i8042_reset)
+		i8042_controller_selftest();
 
 /*
  * Restore the original control register setting.
@@ -1094,23 +1092,11 @@ static void i8042_dritek_enable(void)
 #ifdef CONFIG_PM
 
 /*
- * Here we try to restore the original BIOS settings to avoid
- * upsetting it.
- */
-
-static int i8042_pm_reset(struct device *dev)
-{
-	i8042_controller_reset();
-
-	return 0;
-}
-
-/*
  * Here we try to reset everything back to a state we had
  * before suspending.
  */
 
-static int i8042_pm_restore(struct device *dev)
+static int i8042_controller_resume(bool force_reset)
 {
 	int error;
 
@@ -1118,9 +1104,11 @@ static int i8042_pm_restore(struct device *dev)
 	if (error)
 		return error;
 
-	error = i8042_controller_selftest();
-	if (error)
-		return error;
+	if (i8042_reset || force_reset) {
+		error = i8042_controller_selftest();
+		if (error)
+			return error;
+	}
 
 /*
  * Restore original CTR value and disable all ports
@@ -1162,6 +1150,28 @@ static int i8042_pm_restore(struct device *dev)
 	return 0;
 }
 
+/*
+ * Here we try to restore the original BIOS settings to avoid
+ * upsetting it.
+ */
+
+static int i8042_pm_reset(struct device *dev)
+{
+	i8042_controller_reset();
+
+	return 0;
+}
+
+static int i8042_pm_resume(struct device *dev)
+{
+	/*
+	 * On resume from S2R we always try to reset the controller
+	 * to bring it in a sane state. (In case of S2D we expect
+	 * BIOS to reset the controller for us.)
+	 */
+	return i8042_controller_resume(true);
+}
+
 static int i8042_pm_thaw(struct device *dev)
 {
 	i8042_interrupt(0, NULL);
@@ -1169,9 +1179,14 @@ static int i8042_pm_thaw(struct device *dev)
 	return 0;
 }
 
+static int i8042_pm_restore(struct device *dev)
+{
+	return i8042_controller_resume(false);
+}
+
 static const struct dev_pm_ops i8042_pm_ops = {
 	.suspend	= i8042_pm_reset,
-	.resume		= i8042_pm_restore,
+	.resume		= i8042_pm_resume,
 	.thaw		= i8042_pm_thaw,
 	.poweroff	= i8042_pm_reset,
 	.restore	= i8042_pm_restore,
@@ -1389,9 +1404,11 @@ static int __init i8042_probe(struct platform_device *dev)
 
 	i8042_platform_device = dev;
 
-	error = i8042_controller_selftest();
-	if (error)
-		return error;
+	if (i8042_reset) {
+		error = i8042_controller_selftest();
+		if (error)
+			return error;
+	}
 
 	error = i8042_controller_init();
 	if (error)