drm/i915: save and restore dsparb and d_state registers.

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

2 files changed, 17 insertions, 0 deletions

diff --git a/drivers/char/drm/i915_drv.c b/drivers/char/drm/i915_drv.c
index 96db72542e7d..e8f3d682e3b1 100644
--- a/drivers/char/drm/i915_drv.c
+++ b/drivers/char/drm/i915_drv.c
@@ -256,6 +256,9 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
         pci_save_state(dev->pdev);
         pci_read_config_byte(dev->pdev, LBB, &dev_priv->saveLBB);
 
+        /* Display arbitration control */
+        dev_priv->saveDSPARB = I915_READ(DSPARB);
+
         /* Pipe & plane A info */
         dev_priv->savePIPEACONF = I915_READ(PIPEACONF);
         dev_priv->savePIPEASRC = I915_READ(PIPEASRC);
@@ -349,6 +352,7 @@ static int i915_suspend(struct drm_device *dev, pm_message_t state)
         dev_priv->saveVGACNTRL = I915_READ(VGACNTRL);
 
         /* Clock gating state */
+        dev_priv->saveD_STATE = I915_READ(D_STATE);
         dev_priv->saveDSPCLK_GATE_D = I915_READ(DSPCLK_GATE_D);
 
         /* Cache mode state */
@@ -388,6 +392,8 @@ static int i915_resume(struct drm_device *dev)
 
         pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB);
 
+        I915_WRITE(DSPARB, dev_priv->saveDSPARB);
+
         /* Pipe & plane A info */
         /* Prime the clock */
         if (dev_priv->saveDPLL_A & DPLL_VCO_ENABLE) {
@@ -507,6 +513,7 @@ static int i915_resume(struct drm_device *dev)
         udelay(150);
 
         /* Clock gating state */
+        I915_WRITE (D_STATE, dev_priv->saveD_STATE);
         I915_WRITE (DSPCLK_GATE_D, dev_priv->saveDSPCLK_GATE_D);
 
         /* Cache mode state */
diff --git a/drivers/char/drm/i915_drv.h b/drivers/char/drm/i915_drv.h
index 7619c49e5885..1b20f7c0639c 100644
--- a/drivers/char/drm/i915_drv.h
+++ b/drivers/char/drm/i915_drv.h
@@ -119,6 +119,7 @@ typedef struct drm_i915_private {
         u8 saveLBB;
         u32 saveDSPACNTR;
         u32 saveDSPBCNTR;
+        u32 saveDSPARB;
         u32 savePIPEACONF;
         u32 savePIPEBCONF;
         u32 savePIPEASRC;
@@ -188,6 +189,7 @@ typedef struct drm_i915_private {
         u32 saveIIR;
         u32 saveIMR;
         u32 saveCACHE_MODE_0;
+        u32 saveD_STATE;
         u32 saveDSPCLK_GATE_D;
         u32 saveMI_ARB_STATE;
         u32 saveSWF0[16];
@@ -670,6 +672,8 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
 /** P1 value is 2 greater than this field */
 # define VGA0_PD_P1_MASK        (0x1f << 0)
 
+/* PCI D state control register */
+#define D_STATE         0x6104
 #define DSPCLK_GATE_D   0x6200
 
 /* I830 CRTC registers */
@@ -980,6 +984,12 @@ extern int i915_wait_ring(struct drm_device * dev, int n, const char *caller);
 #define PIPECONF_INTERLACE_W_FIELD_INDICATION   (6 << 21)
 #define PIPECONF_INTERLACE_FIELD_0_ONLY         (7 << 21)
 
+#define DSPARB    0x70030
+#define DSPARB_CSTART_MASK      (0x7f << 7)
+#define DSPARB_CSTART_SHIFT     7
+#define DSPARB_BSTART_MASK      (0x7f)           
+#define DSPARB_BSTART_SHIFT     0
+
 #define PIPEBCONF 0x71008
 #define PIPEBCONF_ENABLE        (1<<31)
 #define PIPEBCONF_DISABLE       0