Merge tag 'drm-misc-next-2021-03-03' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.13:

UAPI Changes:

Cross-subsystem Changes:

Core Changes:
  - %p4cc printk format modifier
  - atomic: introduce drm_crtc_commit_wait, rework atomic plane state
    helpers to take the drm_commit_state structure
  - dma-buf: heaps rework to return a struct dma_buf
  - simple-kms: Add plate state helpers
  - ttm: debugfs support, removal of sysfs

Driver Changes:
  - Convert drivers to shadow plane helpers
  - arc: Move to drm/tiny
  - ast: cursor plane reworks
  - gma500: Remove TTM and medfield support
  - mxsfb: imx8mm support
  - panfrost: MMU IRQ handling rework
  - qxl: rework to better handle resources deallocation, locking
  - sun4i: Add alpha properties for UI and VI layers
  - vc4: RPi4 CEC support
  - vmwgfx: doc cleanup

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20210303100600.dgnkadonzuvfnu22@gilmour

1 files changed, 33 insertions, 3 deletions

diff --git a/drivers/gpu/drm/gma500/psb_drv.c b/drivers/gpu/drm/gma500/psb_drv.c
index 0bcab065242c..650af221c916 100644
--- a/drivers/gpu/drm/gma500/psb_drv.c
+++ b/drivers/gpu/drm/gma500/psb_drv.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>
 
@@ -54,7 +55,7 @@ static const struct pci_device_id pciidlist[] = {
 	/* Poulsbo */
 	{ 0x8086, 0x8108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
 	{ 0x8086, 0x8109, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &psb_chip_ops },
-#if defined(CONFIG_DRM_GMA600)
+	/* Oak Trail */
 	{ 0x8086, 0x4100, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
 	{ 0x8086, 0x4101, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
 	{ 0x8086, 0x4102, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
@@ -64,8 +65,7 @@ static const struct pci_device_id pciidlist[] = {
 	{ 0x8086, 0x4106, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
 	{ 0x8086, 0x4107, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
 	{ 0x8086, 0x4108, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &oaktrail_chip_ops },
-#endif
-	/* Cedartrail */
+	/* Cedar Trail */
 	{ 0x8086, 0x0be0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
 	{ 0x8086, 0x0be1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
 	{ 0x8086, 0x0be2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, (long) &cdv_chip_ops },
@@ -92,6 +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;