drm/gma500: psb_spank() doesn't need it's own file

Since everything else in accel_2d.c got removed we can move psb_spank()
into psb_drv.c where it is used.

Signed-off-by: Patrik Jakobsson <[email protected]>
Reviewed-by: Thomas Zimmermann <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]

Author: patjak

drivers/gpu/drm/gma500/Makefile

@@ -4,7 +4,6 @@
 #
 
 gma500_gfx-y += \
-	  accel_2d.o \
 	  backlight.o \
 	  blitter.o \
 	  cdv_device.o \

drivers/gpu/drm/gma500/accel_2d.c

@@ -12,6 +12,7 @@
 #include <linux/notifier.h>
 #include <linux/pm_runtime.h>
 #include <linux/spinlock.h>
+#include <linux/delay.h>
 
 #include <asm/set_memory.h>
 
@@ -91,6 +92,36 @@ MODULE_DEVICE_TABLE(pci, pciidlist);
 static const struct drm_ioctl_desc psb_ioctls[] = {
 };
 
+/**
+ *	psb_spank		-	reset the 2D engine
+ *	@dev_priv: our PSB DRM device
+ *
+ *	Soft reset the graphics engine and then reload the necessary registers.
+ */
+void psb_spank(struct drm_psb_private *dev_priv)
+{
+	PSB_WSGX32(_PSB_CS_RESET_BIF_RESET | _PSB_CS_RESET_DPM_RESET |
+		_PSB_CS_RESET_TA_RESET | _PSB_CS_RESET_USE_RESET |
+		_PSB_CS_RESET_ISP_RESET | _PSB_CS_RESET_TSP_RESET |
+		_PSB_CS_RESET_TWOD_RESET, PSB_CR_SOFT_RESET);
+	PSB_RSGX32(PSB_CR_SOFT_RESET);
+
+	msleep(1);
+
+	PSB_WSGX32(0, PSB_CR_SOFT_RESET);
+	wmb();
+	PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) | _PSB_CB_CTRL_CLEAR_FAULT,
+		   PSB_CR_BIF_CTRL);
+	wmb();
+	(void) PSB_RSGX32(PSB_CR_BIF_CTRL);
+
+	msleep(1);
+	PSB_WSGX32(PSB_RSGX32(PSB_CR_BIF_CTRL) & ~_PSB_CB_CTRL_CLEAR_FAULT,
+		   PSB_CR_BIF_CTRL);
+	(void) PSB_RSGX32(PSB_CR_BIF_CTRL);
+	PSB_WSGX32(dev_priv->gtt.gatt_start, PSB_CR_BIF_TWOD_REQ_BASE);
+}
+
 static int psb_do_init(struct drm_device *dev)
 {
 	struct drm_psb_private *dev_priv = dev->dev_private;