File 0404-drm-amdgpu-Add-module-param-to-control-CIK... of Package drm.7971

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File 0404-drm-amdgpu-Add-module-param-to-control-CIK-support.patch of Package drm.7971

From 7df289865c69ea39e1f81de0abe839acc54e604b Mon Sep 17 00:00:00 2001
From: Felix Kuehling <Felix.Kuehling@amd.com>
Date: Mon, 5 Jun 2017 18:43:27 +0900
Subject: [PATCH] drm/amdgpu: Add module param to control CIK support
Mime-version: 1.0
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Git-commit: 7df289865c69ea39e1f81de0abe839acc54e604b
Patch-mainline: 4.13-rc1
References: bsc#1066175

If AMDGPU supports CIK, add a module parameter to control CIK
support. It's on by default in AMDGPU, while it is off by default
in radeon.

Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Michel Dänzer <michel.daenzer@amd.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/amd/amdgpu/amdgpu.h     |    4 ++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c |    7 +++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c |   15 +++++++++++++++
 3 files changed, 26 insertions(+)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -98,6 +98,10 @@ extern int amdgpu_sclk_deep_sleep_en;
 extern char *amdgpu_virtual_display;
 extern unsigned amdgpu_pp_feature_mask;
 
+#ifdef CONFIG_DRM_AMDGPU_CIK
+extern int amdgpu_cik_support;
+#endif
+
 #define AMDGPU_WAIT_IDLE_TIMEOUT_IN_MS	        3000
 #define AMDGPU_MAX_USEC_TIMEOUT			100000	/* 100 ms */
 #define AMDGPU_FENCE_JIFFIES_TIMEOUT		(HZ / 2)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -204,6 +204,13 @@ module_param_named(disable_cu, amdgpu_di
 MODULE_PARM_DESC(virtual_display, "Enable virtual display feature (the virtual_display will be set like xxxx:xx:xx.x;xxxx:xx:xx.x)");
 module_param_named(virtual_display, amdgpu_virtual_display, charp, 0444);
 
+#ifdef CONFIG_DRM_AMDGPU_CIK
+int amdgpu_cik_support = 1;
+MODULE_PARM_DESC(cik_support, "CIK support (1 = enabled (default), 0 = disabled)");
+module_param_named(cik_support, amdgpu_cik_support, int, 0444);
+#endif
+
+
 static const struct pci_device_id pciidlist[] = {
 #ifdef  CONFIG_DRM_AMDGPU_SI
 	{0x1002, 0x6780, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CHIP_TAHITI},
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -91,6 +91,21 @@ int amdgpu_driver_load_kms(struct drm_de
 	struct amdgpu_device *adev;
 	int r, acpi_status;
 
+#ifdef CONFIG_DRM_AMDGPU_CIK
+	if (!amdgpu_cik_support) {
+		switch (flags & AMD_ASIC_MASK) {
+		case CHIP_KAVERI:
+		case CHIP_BONAIRE:
+		case CHIP_HAWAII:
+		case CHIP_KABINI:
+		case CHIP_MULLINS:
+			dev_info(dev->dev,
+				 "CIK support disabled by module param\n");
+			return -ENODEV;
+		}
+	}
+#endif
+
 	adev = kzalloc(sizeof(struct amdgpu_device), GFP_KERNEL);
 	if (adev == NULL) {
 		return -ENOMEM;

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File 0404-drm-amdgpu-Add-module-param-to-control-CIK-support.patch of Package drm.7971

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