drm/radeon/kms: move around new init path code to avoid posting at init

We really don't want to post the card at init, it takes a relatively
long time and isn't required, so split the resume path into
a startup path called by both init/resume and separate resume
entry point to do posting.
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/radeon/r420.c

@@ -157,31 +157,10 @@ static void r420_clock_resume(struct radeon_device *rdev)
 	WREG32_PLL(R_00000D_SCLK_CNTL, sclk_cntl);
 }
 
-int r420_resume(struct radeon_device *rdev)
+static int r420_startup(struct radeon_device *rdev)
 {
 	int r;
 
-	/* Make sur GART are not working */
-	if (rdev->flags & RADEON_IS_PCIE)
-		rv370_pcie_gart_disable(rdev);
-	if (rdev->flags & RADEON_IS_PCI)
-		r100_pci_gart_disable(rdev);
-	/* Resume clock before doing reset */
-	r420_clock_resume(rdev);
-	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
-	if (radeon_gpu_reset(rdev)) {
-		dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
-			RREG32(R_000E40_RBBM_STATUS),
-			RREG32(R_0007C0_CP_STAT));
-	}
-	/* check if cards are posted or not */
-	if (rdev->is_atom_bios) {
-		atom_asic_init(rdev->mode_info.atom_context);
-	} else {
-		radeon_combios_asic_init(rdev->ddev);
-	}
-	/* Resume clock after posting */
-	r420_clock_resume(rdev);
 	r300_mc_program(rdev);
 	/* Initialize GART (initialize after TTM so we can allocate
 	 * memory through TTM but finalize after TTM) */
@@ -217,6 +196,33 @@ int r420_resume(struct radeon_device *rdev)
 	return 0;
 }
 
+int r420_resume(struct radeon_device *rdev)
+{
+	/* Make sur GART are not working */
+	if (rdev->flags & RADEON_IS_PCIE)
+		rv370_pcie_gart_disable(rdev);
+	if (rdev->flags & RADEON_IS_PCI)
+		r100_pci_gart_disable(rdev);
+	/* Resume clock before doing reset */
+	r420_clock_resume(rdev);
+	/* Reset gpu before posting otherwise ATOM will enter infinite loop */
+	if (radeon_gpu_reset(rdev)) {
+		dev_warn(rdev->dev, "GPU reset failed ! (0xE40=0x%08X, 0x7C0=0x%08X)\n",
+			RREG32(R_000E40_RBBM_STATUS),
+			RREG32(R_0007C0_CP_STAT));
+	}
+	/* check if cards are posted or not */
+	if (rdev->is_atom_bios) {
+		atom_asic_init(rdev->mode_info.atom_context);
+	} else {
+		radeon_combios_asic_init(rdev->ddev);
+	}
+	/* Resume clock after posting */
+	r420_clock_resume(rdev);
+
+	return r420_startup(rdev);
+}
+
 int r420_suspend(struct radeon_device *rdev)
 {
 	r100_cp_disable(rdev);
@@ -330,7 +336,7 @@ int r420_init(struct radeon_device *rdev)
 	}
 	r300_set_reg_safe(rdev);
 	rdev->accel_working = true;
-	r = r420_resume(rdev);
+	r = r420_startup(rdev);
 	if (r) {
 		/* Somethings want wront with the accel init stop accel */
 		dev_err(rdev->dev, "Disabling GPU acceleration\n");

drivers/gpu/drm/radeon/r600.c

@@ -1466,7 +1466,7 @@ bool r600_card_posted(struct radeon_device *rdev)
 	return false;
 }
 
-int r600_resume(struct radeon_device *rdev)
+int r600_startup(struct radeon_device *rdev)
 {
 	int r;
 
@@ -1499,6 +1499,40 @@ int r600_resume(struct radeon_device *rdev)
 	return 0;
 }
 
+int r600_resume(struct radeon_device *rdev)
+{
+	int r;
+
+	if (radeon_gpu_reset(rdev)) {
+		/* FIXME: what do we want to do here ? */
+	}
+	/* post card */
+	if (rdev->is_atom_bios) {
+		atom_asic_init(rdev->mode_info.atom_context);
+	} else {
+		radeon_combios_asic_init(rdev->ddev);
+	}
+	/* Initialize clocks */
+	r = radeon_clocks_init(rdev);
+	if (r) {
+		return r;
+	}
+
+	r = r600_startup(rdev);
+	if (r) {
+		DRM_ERROR("r600 startup failed on resume\n");
+		return r;
+	}
+
+	r = radeon_ib_test(rdev);
+	if (r) {
+		DRM_ERROR("radeon: failled testing IB (%d).\n", r);
+		return r;
+	}
+	return r;
+}
+
+
 int r600_suspend(struct radeon_device *rdev)
 {
 	/* FIXME: we should wait for ring to be empty */
@@ -1596,7 +1630,7 @@ int r600_init(struct radeon_device *rdev)
 		return r;
 	}
 
-	r = r600_resume(rdev);
+	r = r600_startup(rdev);
 	if (r) {
 		if (rdev->flags & RADEON_IS_AGP) {
 			/* Retry with disabling AGP */

drivers/gpu/drm/radeon/rv770.c

@@ -851,7 +851,7 @@ int rv770_gpu_reset(struct radeon_device *rdev)
 	return 0;
 }
 
-int rv770_resume(struct radeon_device *rdev)
+static int rv770_startup(struct radeon_device *rdev)
 {
 	int r;
 
@@ -875,6 +875,40 @@ int rv770_resume(struct radeon_device *rdev)
 	return 0;
 }
 
+int rv770_resume(struct radeon_device *rdev)
+{
+	int r;
+
+	if (radeon_gpu_reset(rdev)) {
+		/* FIXME: what do we want to do here ? */
+	}
+	/* post card */
+	if (rdev->is_atom_bios) {
+		atom_asic_init(rdev->mode_info.atom_context);
+	} else {
+		radeon_combios_asic_init(rdev->ddev);
+	}
+	/* Initialize clocks */
+	r = radeon_clocks_init(rdev);
+	if (r) {
+		return r;
+	}
+
+	r = rv770_startup(rdev);
+	if (r) {
+		DRM_ERROR("r600 startup failed on resume\n");
+		return r;
+	}
+
+	r = radeon_ib_test(rdev);
+	if (r) {
+		DRM_ERROR("radeon: failled testing IB (%d).\n", r);
+		return r;
+	}
+	return r;
+
+}
+
 int rv770_suspend(struct radeon_device *rdev)
 {
 	/* FIXME: we should wait for ring to be empty */
@@ -959,7 +993,7 @@ int rv770_init(struct radeon_device *rdev)
 		return r;
 
 	rdev->accel_working = true;
-	r = rv770_resume(rdev);
+	r = rv770_startup(rdev);
 	if (r) {
 		if (rdev->flags & RADEON_IS_AGP) {
 			/* Retry with disabling AGP */