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drm/fbdev-generic: Convert to fbdev-ttm

Browse Source 
Only TTM-based drivers use fbdev-generic. Rename it to fbdev-ttm and
change the symbol infix from _generic_ to _ttm_. Link the source file
into TTM helpers, so that it is only build if TTM-based drivers have
been selected. Select DRM_TTM_HELPER for loongson.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240419083331.7761-43-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2024-04-19 10:29:35 +02:00
parent c32705b591
commit aae4682e5d
14 changed files with 77 additions and 77 deletions
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2
Documentation/gpu/drm-kms-helpers.rst
View File

@ -116,7 +116,7 @@ fbdev Helper Functions Reference
.. kernel-doc:: drivers/gpu/drm/drm_fb_helper.c
:export:
.. kernel-doc:: drivers/gpu/drm/drm_fbdev_generic.c
.. kernel-doc:: drivers/gpu/drm/drm_fbdev_ttm.c
:export:
format Helper Functions Reference

5
drivers/gpu/drm/Makefile
View File

@ -118,6 +118,7 @@ drm_vram_helper-y := drm_gem_vram_helper.o
obj-$(CONFIG_DRM_VRAM_HELPER) += drm_vram_helper.o
drm_ttm_helper-y := drm_gem_ttm_helper.o
drm_ttm_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fbdev_ttm.o
obj-$(CONFIG_DRM_TTM_HELPER) += drm_ttm_helper.o
#
@ -143,9 +144,7 @@ drm_kms_helper-y := \
drm_self_refresh_helper.o \
drm_simple_kms_helper.o
drm_kms_helper-$(CONFIG_DRM_PANEL_BRIDGE) += bridge/panel.o
drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += \
drm_fbdev_generic.o \
drm_fb_helper.o
drm_kms_helper-$(CONFIG_DRM_FBDEV_EMULATION) += drm_fb_helper.o
obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
#

6
drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
View File

@ -24,7 +24,7 @@
#include <drm/amdgpu_drm.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_fbdev_ttm.h>
#include <drm/drm_gem.h>
#include <drm/drm_managed.h>
#include <drm/drm_pciids.h>
@ -2318,9 +2318,9 @@ retry_init:
!list_empty(&adev_to_drm(adev)->mode_config.connector_list)) {
/* select 8 bpp console on low vram cards */
if (adev->gmc.real_vram_size <= (32*1024*1024))
drm_fbdev_generic_setup(adev_to_drm(adev), 8);
drm_fbdev_ttm_setup(adev_to_drm(adev), 8);
else
drm_fbdev_generic_setup(adev_to_drm(adev), 32);
drm_fbdev_ttm_setup(adev_to_drm(adev), 32);
}
ret = amdgpu_debugfs_init(adev);

80
drivers/gpu/drm/drm_fbdev_generic.c → drivers/gpu/drm/drm_fbdev_ttm.c
View File

@ -10,10 +10,10 @@
#include <drm/drm_gem.h>
#include <drm/drm_print.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_fbdev_ttm.h>
/* @user: 1=userspace, 0=fbcon */
static int drm_fbdev_generic_fb_open(struct fb_info *info, int user)
static int drm_fbdev_ttm_fb_open(struct fb_info *info, int user)
{
struct drm_fb_helper *fb_helper = info->par;
@ -24,7 +24,7 @@ static int drm_fbdev_generic_fb_open(struct fb_info *info, int user)
return 0;
}
static int drm_fbdev_generic_fb_release(struct fb_info *info, int user)
static int drm_fbdev_ttm_fb_release(struct fb_info *info, int user)
{
struct drm_fb_helper *fb_helper = info->par;
@ -34,11 +34,11 @@ static int drm_fbdev_generic_fb_release(struct fb_info *info, int user)
return 0;
}
FB_GEN_DEFAULT_DEFERRED_SYSMEM_OPS(drm_fbdev_generic,
FB_GEN_DEFAULT_DEFERRED_SYSMEM_OPS(drm_fbdev_ttm,
drm_fb_helper_damage_range,
drm_fb_helper_damage_area);
static void drm_fbdev_generic_fb_destroy(struct fb_info *info)
static void drm_fbdev_ttm_fb_destroy(struct fb_info *info)
{
struct drm_fb_helper *fb_helper = info->par;
void *shadow = info->screen_buffer;
@ -56,19 +56,19 @@ static void drm_fbdev_generic_fb_destroy(struct fb_info *info)
kfree(fb_helper);
}
static const struct fb_ops drm_fbdev_generic_fb_ops = {
static const struct fb_ops drm_fbdev_ttm_fb_ops = {
.owner = THIS_MODULE,
.fb_open = drm_fbdev_generic_fb_open,
.fb_release = drm_fbdev_generic_fb_release,
FB_DEFAULT_DEFERRED_OPS(drm_fbdev_generic),
.fb_open = drm_fbdev_ttm_fb_open,
.fb_release = drm_fbdev_ttm_fb_release,
FB_DEFAULT_DEFERRED_OPS(drm_fbdev_ttm),
DRM_FB_HELPER_DEFAULT_OPS,
.fb_destroy = drm_fbdev_generic_fb_destroy,
.fb_destroy = drm_fbdev_ttm_fb_destroy,
};
/*
* This function uses the client API to create a framebuffer backed by a dumb buffer.
*/
static int drm_fbdev_generic_helper_fb_probe(struct drm_fb_helper *fb_helper,
static int drm_fbdev_ttm_helper_fb_probe(struct drm_fb_helper *fb_helper,
struct drm_fb_helper_surface_size *sizes)
{
struct drm_client_dev *client = &fb_helper->client;
@ -108,7 +108,7 @@ static int drm_fbdev_generic_helper_fb_probe(struct drm_fb_helper *fb_helper,
drm_fb_helper_fill_info(info, fb_helper, sizes);
info->fbops = &drm_fbdev_generic_fb_ops;
info->fbops = &drm_fbdev_ttm_fb_ops;
/* screen */
info->flags |= FBINFO_VIRTFB | FBINFO_READS_FAST;
@ -137,9 +137,9 @@ err_drm_client_framebuffer_delete:
return ret;
}
static void drm_fbdev_generic_damage_blit_real(struct drm_fb_helper *fb_helper,
struct drm_clip_rect *clip,
struct iosys_map *dst)
static void drm_fbdev_ttm_damage_blit_real(struct drm_fb_helper *fb_helper,
struct drm_clip_rect *clip,
struct iosys_map *dst)
{
struct drm_framebuffer *fb = fb_helper->fb;
size_t offset = clip->y1 * fb->pitches[0];
@ -176,8 +176,8 @@ static void drm_fbdev_generic_damage_blit_real(struct drm_fb_helper *fb_helper,
}
}
static int drm_fbdev_generic_damage_blit(struct drm_fb_helper *fb_helper,
struct drm_clip_rect *clip)
static int drm_fbdev_ttm_damage_blit(struct drm_fb_helper *fb_helper,
struct drm_clip_rect *clip)
{
struct drm_client_buffer *buffer = fb_helper->buffer;
struct iosys_map map, dst;
@ -201,7 +201,7 @@ static int drm_fbdev_generic_damage_blit(struct drm_fb_helper *fb_helper,
goto out;
dst = map;
drm_fbdev_generic_damage_blit_real(fb_helper, clip, &dst);
drm_fbdev_ttm_damage_blit_real(fb_helper, clip, &dst);
drm_client_buffer_vunmap_local(buffer);
@ -211,8 +211,8 @@ out:
return ret;
}
static int drm_fbdev_generic_helper_fb_dirty(struct drm_fb_helper *helper,
struct drm_clip_rect *clip)
static int drm_fbdev_ttm_helper_fb_dirty(struct drm_fb_helper *helper,
struct drm_clip_rect *clip)
{
struct drm_device *dev = helper->dev;
int ret;
@ -221,7 +221,7 @@ static int drm_fbdev_generic_helper_fb_dirty(struct drm_fb_helper *helper,
if (!(clip->x1 < clip->x2 && clip->y1 < clip->y2))
return 0;
ret = drm_fbdev_generic_damage_blit(helper, clip);
ret = drm_fbdev_ttm_damage_blit(helper, clip);
if (drm_WARN_ONCE(dev, ret, "Damage blitter failed: ret=%d\n", ret))
return ret;
@ -234,12 +234,12 @@ static int drm_fbdev_generic_helper_fb_dirty(struct drm_fb_helper *helper,
return 0;
}
static const struct drm_fb_helper_funcs drm_fbdev_generic_helper_funcs = {
.fb_probe = drm_fbdev_generic_helper_fb_probe,
.fb_dirty = drm_fbdev_generic_helper_fb_dirty,
static const struct drm_fb_helper_funcs drm_fbdev_ttm_helper_funcs = {
.fb_probe = drm_fbdev_ttm_helper_fb_probe,
.fb_dirty = drm_fbdev_ttm_helper_fb_dirty,
};
static void drm_fbdev_generic_client_unregister(struct drm_client_dev *client)
static void drm_fbdev_ttm_client_unregister(struct drm_client_dev *client)
{
struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
@ -252,14 +252,14 @@ static void drm_fbdev_generic_client_unregister(struct drm_client_dev *client)
}
}
static int drm_fbdev_generic_client_restore(struct drm_client_dev *client)
static int drm_fbdev_ttm_client_restore(struct drm_client_dev *client)
{
drm_fb_helper_lastclose(client->dev);
return 0;
}
static int drm_fbdev_generic_client_hotplug(struct drm_client_dev *client)
static int drm_fbdev_ttm_client_hotplug(struct drm_client_dev *client)
{
struct drm_fb_helper *fb_helper = drm_fb_helper_from_client(client);
struct drm_device *dev = client->dev;
@ -284,32 +284,32 @@ static int drm_fbdev_generic_client_hotplug(struct drm_client_dev *client)
err_drm_fb_helper_fini:
drm_fb_helper_fini(fb_helper);
err_drm_err:
drm_err(dev, "fbdev: Failed to setup generic emulation (ret=%d)\n", ret);
drm_err(dev, "fbdev: Failed to setup emulation (ret=%d)\n", ret);
return ret;
}
static const struct drm_client_funcs drm_fbdev_generic_client_funcs = {
static const struct drm_client_funcs drm_fbdev_ttm_client_funcs = {
.owner = THIS_MODULE,
.unregister = drm_fbdev_generic_client_unregister,
.restore = drm_fbdev_generic_client_restore,
.hotplug = drm_fbdev_generic_client_hotplug,
.unregister = drm_fbdev_ttm_client_unregister,
.restore = drm_fbdev_ttm_client_restore,
.hotplug = drm_fbdev_ttm_client_hotplug,
};
/**
* drm_fbdev_generic_setup() - Setup generic fbdev emulation
* drm_fbdev_ttm_setup() - Setup fbdev emulation for TTM-based drivers
* @dev: DRM device
* @preferred_bpp: Preferred bits per pixel for the device.
*
* This function sets up generic fbdev emulation for drivers that supports
* This function sets up fbdev emulation for TTM-based drivers that support
* dumb buffers with a virtual address and that can be mmap'ed.
* drm_fbdev_generic_setup() shall be called after the DRM driver registered
* drm_fbdev_ttm_setup() shall be called after the DRM driver registered
* the new DRM device with drm_dev_register().
*
* Restore, hotplug events and teardown are all taken care of. Drivers that do
* suspend/resume need to call drm_fb_helper_set_suspend_unlocked() themselves.
* Simple drivers might use drm_mode_config_helper_suspend().
*
* In order to provide fixed mmap-able memory ranges, generic fbdev emulation
* In order to provide fixed mmap-able memory ranges, fbdev emulation
* uses a shadow buffer in system memory. The implementation blits the shadow
* fbdev buffer onto the real buffer in regular intervals.
*
@ -318,7 +318,7 @@ static const struct drm_client_funcs drm_fbdev_generic_client_funcs = {
*
* The fbdev is destroyed by drm_dev_unregister().
*/
void drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
void drm_fbdev_ttm_setup(struct drm_device *dev, unsigned int preferred_bpp)
{
struct drm_fb_helper *fb_helper;
int ret;
@ -329,9 +329,9 @@ void drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
fb_helper = kzalloc(sizeof(*fb_helper), GFP_KERNEL);
if (!fb_helper)
return;
drm_fb_helper_prepare(dev, fb_helper, preferred_bpp, &drm_fbdev_generic_helper_funcs);
drm_fb_helper_prepare(dev, fb_helper, preferred_bpp, &drm_fbdev_ttm_helper_funcs);
ret = drm_client_init(dev, &fb_helper->client, "fbdev", &drm_fbdev_generic_client_funcs);
ret = drm_client_init(dev, &fb_helper->client, "fbdev", &drm_fbdev_ttm_client_funcs);
if (ret) {
drm_err(dev, "Failed to register client: %d\n", ret);
goto err_drm_client_init;
@ -346,4 +346,4 @@ err_drm_client_init:
kfree(fb_helper);
return;
}
EXPORT_SYMBOL(drm_fbdev_generic_setup);
EXPORT_SYMBOL(drm_fbdev_ttm_setup);

4
drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c
View File

@ -17,7 +17,7 @@
#include <drm/drm_aperture.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_fbdev_ttm.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_gem_vram_helper.h>
#include <drm/drm_managed.h>
@ -339,7 +339,7 @@ static int hibmc_pci_probe(struct pci_dev *pdev,
goto err_unload;
}
drm_fbdev_generic_setup(dev, 32);
drm_fbdev_ttm_setup(dev, 32);
return 0;

1
drivers/gpu/drm/loongson/Kconfig
View File

@ -6,6 +6,7 @@ config DRM_LOONGSON
depends on LOONGARCH || MIPS || COMPILE_TEST
select DRM_KMS_HELPER
select DRM_TTM
select DRM_TTM_HELPER
select I2C
select I2C_ALGOBIT
help

4
drivers/gpu/drm/loongson/lsdc_drv.c
View File

@ -10,7 +10,7 @@
#include <drm/drm_atomic.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_fbdev_ttm.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_modeset_helper.h>
@ -314,7 +314,7 @@ static int lsdc_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ret)
return ret;
drm_fbdev_generic_setup(ddev, 32);
drm_fbdev_ttm_setup(ddev, 32);
return 0;
}

6
drivers/gpu/drm/nouveau/nouveau_drm.c
View File

@ -32,7 +32,7 @@
#include <drm/drm_aperture.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_fbdev_ttm.h>
#include <drm/drm_gem_ttm_helper.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_vblank.h>
@ -846,9 +846,9 @@ static int nouveau_drm_probe(struct pci_dev *pdev,
goto fail_drm_dev_init;
if (nouveau_drm(drm_dev)->client.device.info.ram_size <= 32 * 1024 * 1024)
drm_fbdev_generic_setup(drm_dev, 8);
drm_fbdev_ttm_setup(drm_dev, 8);
else
drm_fbdev_generic_setup(drm_dev, 32);
drm_fbdev_ttm_setup(drm_dev, 32);
quirk_broken_nv_runpm(pdev);
return 0;

4
drivers/gpu/drm/qxl/qxl_drv.c
View File

@ -37,7 +37,7 @@
#include <drm/drm_aperture.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_fbdev_ttm.h>
#include <drm/drm_file.h>
#include <drm/drm_gem_ttm_helper.h>
#include <drm/drm_module.h>
@ -118,7 +118,7 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ret)
goto modeset_cleanup;
drm_fbdev_generic_setup(&qdev->ddev, 32);
drm_fbdev_ttm_setup(&qdev->ddev, 32);
return 0;
modeset_cleanup:

4
drivers/gpu/drm/tiny/bochs.c
View File

@ -7,7 +7,7 @@
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_edid.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_fbdev_ttm.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_framebuffer.h>
#include <drm/drm_gem_framebuffer_helper.h>
@ -670,7 +670,7 @@ static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent
if (ret)
goto err_hw_fini;
drm_fbdev_generic_setup(dev, 32);
drm_fbdev_ttm_setup(dev, 32);
return ret;
err_hw_fini:

4
drivers/gpu/drm/vboxvideo/vbox_drv.c
View File

@ -14,7 +14,7 @@
#include <drm/drm_aperture.h>
#include <drm/drm_atomic_helper.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_fbdev_ttm.h>
#include <drm/drm_file.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_managed.h>
@ -80,7 +80,7 @@ static int vbox_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (ret)
goto err_irq_fini;
drm_fbdev_generic_setup(&vbox->ddev, 32);
drm_fbdev_ttm_setup(&vbox->ddev, 32);
return 0;

4
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
View File

@ -37,7 +37,7 @@
#include <drm/drm_aperture.h>
#include <drm/drm_drv.h>
#include <drm/drm_fbdev_generic.h>
#include <drm/drm_fbdev_ttm.h>
#include <drm/drm_gem_ttm_helper.h>
#include <drm/drm_ioctl.h>
#include <drm/drm_module.h>
@ -1685,7 +1685,7 @@ static int vmw_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
vmw_fifo_resource_inc(vmw);
vmw_svga_enable(vmw);
drm_fbdev_generic_setup(&vmw->drm, 0);
drm_fbdev_ttm_setup(&vmw->drm, 0);
vmw_debugfs_gem_init(vmw);
vmw_debugfs_resource_managers_init(vmw);

15
include/drm/drm_fbdev_generic.h
View File

@ -1,15 +0,0 @@
/* SPDX-License-Identifier: MIT */
#ifndef DRM_FBDEV_GENERIC_H
#define DRM_FBDEV_GENERIC_H
struct drm_device;
#ifdef CONFIG_DRM_FBDEV_EMULATION
void drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp);
#else
static inline void drm_fbdev_generic_setup(struct drm_device *dev, unsigned int preferred_bpp)
{ }
#endif
#endif

15
include/drm/drm_fbdev_ttm.h Normal file
View File

@ -0,0 +1,15 @@
/* SPDX-License-Identifier: MIT */
#ifndef DRM_FBDEV_TTM_H
#define DRM_FBDEV_TTM_H
struct drm_device;
#ifdef CONFIG_DRM_FBDEV_EMULATION
void drm_fbdev_ttm_setup(struct drm_device *dev, unsigned int preferred_bpp);
#else
static inline void drm_fbdev_ttm_setup(struct drm_device *dev, unsigned int preferred_bpp)
{ }
#endif
#endif