[PATCH 01/10] drm/ttm: Remove TTM_HAS_AGP

[Daniel Vetter]

It tries to do fancy things with excluding agp support if ttm is
built-in, but agp isn't. Instead just express this depency like drm
does and use CONFIG_AGP everywhere.

Also use the neat Makefile magic to make the entire ttm_agp_backend
file optional.

v2: Use IS_ENABLED(CONFIG_AGP) as suggested by Ville

Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
 drivers/gpu/drm/Kconfig                  | 1 +
 drivers/gpu/drm/ttm/Makefile             | 3 ++-
 drivers/gpu/drm/ttm/ttm_agp_backend.c    | 3 ---
 drivers/gpu/drm/ttm/ttm_page_alloc.c     | 8 ++++----
 drivers/gpu/drm/ttm/ttm_page_alloc_dma.c | 8 ++++----
 include/drm/ttm/ttm_bo_driver.h          | 3 +--
 6 files changed, 12 insertions(+), 14 deletions(-)

diff --git a/drivers/gpu/drm/Kconfig b/drivers/gpu/drm/Kconfig
index f2a74d0b68ae..7c9fc451f1aa 100644
--- a/drivers/gpu/drm/Kconfig
+++ b/drivers/gpu/drm/Kconfig
@@ -83,6 +83,7 @@ config DRM_LOAD_EDID_FIRMWARE
 config DRM_TTM
 	tristate
 	depends on DRM
+	depends on (AGP || AGP=n)
 	help
 	  GPU memory management subsystem for devices with multiple
 	  GPU memory types. Will be enabled automatically if a device driver
diff --git a/drivers/gpu/drm/ttm/Makefile b/drivers/gpu/drm/ttm/Makefile
index b433b9f040c9..f92325800f8a 100644
--- a/drivers/gpu/drm/ttm/Makefile
+++ b/drivers/gpu/drm/ttm/Makefile
@@ -2,9 +2,10 @@
 # Makefile for the drm device driver.  This driver provides support for the
 
 ccflags-y := -Iinclude/drm
-ttm-y := ttm_agp_backend.o ttm_memory.o ttm_tt.o ttm_bo.o \
+ttm-y := ttm_memory.o ttm_tt.o ttm_bo.o \
 	ttm_bo_util.o ttm_bo_vm.o ttm_module.o \
 	ttm_object.o ttm_lock.o ttm_execbuf_util.o ttm_page_alloc.o \
 	ttm_bo_manager.o ttm_page_alloc_dma.o
+ttm-$(CONFIG_AGP) += ttm_agp_backend.o
 
 obj-$(CONFIG_DRM_TTM) += ttm.o
diff --git a/drivers/gpu/drm/ttm/ttm_agp_backend.c b/drivers/gpu/drm/ttm/ttm_agp_backend.c
index 764be36397fd..028ab6007873 100644
--- a/drivers/gpu/drm/ttm/ttm_agp_backend.c
+++ b/drivers/gpu/drm/ttm/ttm_agp_backend.c
@@ -34,7 +34,6 @@
 #include <drm/ttm/ttm_module.h>
 #include <drm/ttm/ttm_bo_driver.h>
 #include <drm/ttm/ttm_page_alloc.h>
-#ifdef TTM_HAS_AGP
 #include <drm/ttm/ttm_placement.h>
 #include <linux/agp_backend.h>
 #include <linux/module.h>
@@ -148,5 +147,3 @@ void ttm_agp_tt_unpopulate(struct ttm_tt *ttm)
 	ttm_pool_unpopulate(ttm);
 }
 EXPORT_SYMBOL(ttm_agp_tt_unpopulate);
-
-#endif
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc.c b/drivers/gpu/drm/ttm/ttm_page_alloc.c
index 025c429050c0..a37de5db5731 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc.c
@@ -48,7 +48,7 @@
 #include <drm/ttm/ttm_bo_driver.h>
 #include <drm/ttm/ttm_page_alloc.h>
 
-#ifdef TTM_HAS_AGP
+#if IS_ENABLED(CONFIG_AGP)
 #include <asm/agp.h>
 #endif
 
@@ -219,7 +219,7 @@ static struct ttm_pool_manager *_manager;
 #ifndef CONFIG_X86
 static int set_pages_array_wb(struct page **pages, int addrinarray)
 {
-#ifdef TTM_HAS_AGP
+#if IS_ENABLED(CONFIG_AGP)
 	int i;
 
 	for (i = 0; i < addrinarray; i++)
@@ -230,7 +230,7 @@ static int set_pages_array_wb(struct page **pages, int addrinarray)
 
 static int set_pages_array_wc(struct page **pages, int addrinarray)
 {
-#ifdef TTM_HAS_AGP
+#if IS_ENABLED(CONFIG_AGP)
 	int i;
 
 	for (i = 0; i < addrinarray; i++)
@@ -241,7 +241,7 @@ static int set_pages_array_wc(struct page **pages, int addrinarray)
 
 static int set_pages_array_uc(struct page **pages, int addrinarray)
 {
-#ifdef TTM_HAS_AGP
+#if IS_ENABLED(CONFIG_AGP)
 	int i;
 
 	for (i = 0; i < addrinarray; i++)
diff --git a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
index 624d941aaad1..bef9f6feb635 100644
--- a/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
+++ b/drivers/gpu/drm/ttm/ttm_page_alloc_dma.c
@@ -50,7 +50,7 @@
 #include <linux/kthread.h>
 #include <drm/ttm/ttm_bo_driver.h>
 #include <drm/ttm/ttm_page_alloc.h>
-#ifdef TTM_HAS_AGP
+#if IS_ENABLED(CONFIG_AGP)
 #include <asm/agp.h>
 #endif
 
@@ -271,7 +271,7 @@ static struct kobj_type ttm_pool_kobj_type = {
 #ifndef CONFIG_X86
 static int set_pages_array_wb(struct page **pages, int addrinarray)
 {
-#ifdef TTM_HAS_AGP
+#if IS_ENABLED(CONFIG_AGP)
 	int i;
 
 	for (i = 0; i < addrinarray; i++)
@@ -282,7 +282,7 @@ static int set_pages_array_wb(struct page **pages, int addrinarray)
 
 static int set_pages_array_wc(struct page **pages, int addrinarray)
 {
-#ifdef TTM_HAS_AGP
+#if IS_ENABLED(CONFIG_AGP)
 	int i;
 
 	for (i = 0; i < addrinarray; i++)
@@ -293,7 +293,7 @@ static int set_pages_array_wc(struct page **pages, int addrinarray)
 
 static int set_pages_array_uc(struct page **pages, int addrinarray)
 {
-#ifdef TTM_HAS_AGP
+#if IS_ENABLED(CONFIG_AGP)
 	int i;
 
 	for (i = 0; i < addrinarray; i++)
diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
index 3d4bf08aa21f..ff544e3e37a7 100644
--- a/include/drm/ttm/ttm_bo_driver.h
+++ b/include/drm/ttm/ttm_bo_driver.h
@@ -1030,8 +1030,7 @@ extern pgprot_t ttm_io_prot(uint32_t caching_flags, pgprot_t tmp);
 
 extern const struct ttm_mem_type_manager_func ttm_bo_manager_func;
 
-#if (defined(CONFIG_AGP) || (defined(CONFIG_AGP_MODULE) && defined(MODULE)))
-#define TTM_HAS_AGP
+#ifdef CONFIG_AGP
 #include <linux/agp_backend.h>
 
 /**
-- 
2.8.0.rc3