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drm: Stop using drm_vblank_count() as the hw frame counter

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drm_vblank_count() returns the software counter. We should not pretend
it's the hw counter since we use the hw counter to figuere out what the
software counter value should be. So instead provide a new function
drm_vblank_no_hw_counter() for drivers that don't have a real hw
counter. The new function simply returns 0, which is about the only
thing it can do.

Cc: Vincent Abriou <vincent.abriou@st.com>
Cc: Thierry Reding <treding@nvidia.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Vincent Abriou <vincent.abriou@st.com>
[danvet: s/int pipe/unsigned int pipe/ to follow Thierry's interface
change.]
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2015-09-30 16:46:48 +03:00 committed by Daniel Vetter
parent 88e72717c2
commit b44f84081b
15 changed files with 31 additions and 13 deletions
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2
drivers/gpu/drm/armada/armada_drv.c
View file

@ -300,7 +300,7 @@ static struct drm_driver armada_drm_driver = {
.lastclose = armada_drm_lastclose,
.unload = armada_drm_unload,
.set_busid = drm_platform_set_busid,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = armada_drm_enable_vblank,
.disable_vblank = armada_drm_disable_vblank,
#ifdef CONFIG_DEBUG_FS

2
drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c
View file

@ -699,7 +699,7 @@ static struct drm_driver atmel_hlcdc_dc_driver = {
.irq_preinstall = atmel_hlcdc_dc_irq_uninstall,
.irq_postinstall = atmel_hlcdc_dc_irq_postinstall,
.irq_uninstall = atmel_hlcdc_dc_irq_uninstall,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = atmel_hlcdc_dc_enable_vblank,
.disable_vblank = atmel_hlcdc_dc_disable_vblank,
.gem_free_object = drm_gem_cma_free_object,

17
drivers/gpu/drm/drm_irq.c
View file

@ -1798,3 +1798,20 @@ bool drm_crtc_handle_vblank(struct drm_crtc *crtc)
return drm_handle_vblank(crtc->dev, drm_crtc_index(crtc));
}
EXPORT_SYMBOL(drm_crtc_handle_vblank);
/**
* drm_vblank_no_hw_counter - "No hw counter" implementation of .get_vblank_counter()
* @dev: DRM device
* @pipe: CRTC for which to read the counter
*
* Drivers can plug this into the .get_vblank_counter() function if
* there is no useable hardware frame counter available.
*
* Returns:
* 0
*/
u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe)
{
return 0;
}
EXPORT_SYMBOL(drm_vblank_no_hw_counter);

2
drivers/gpu/drm/exynos/exynos_drm_drv.c
View file

@ -447,7 +447,7 @@ static struct drm_driver exynos_drm_driver = {
.lastclose = exynos_drm_lastclose,
.postclose = exynos_drm_postclose,
.set_busid = drm_platform_set_busid,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = exynos_drm_crtc_enable_vblank,
.disable_vblank = exynos_drm_crtc_disable_vblank,
.gem_free_object = exynos_drm_gem_free_object,

2
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_drv.c
View file

@ -193,7 +193,7 @@ static struct drm_driver fsl_dcu_drm_driver = {
.unload = fsl_dcu_unload,
.preclose = fsl_dcu_drm_preclose,
.irq_handler = fsl_dcu_drm_irq,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = fsl_dcu_drm_enable_vblank,
.disable_vblank = fsl_dcu_drm_disable_vblank,
.gem_free_object = drm_gem_cma_free_object,

2
drivers/gpu/drm/imx/imx-drm-core.c
View file

@ -487,7 +487,7 @@ static struct drm_driver imx_drm_driver = {
.gem_prime_vmap = drm_gem_cma_prime_vmap,
.gem_prime_vunmap = drm_gem_cma_prime_vunmap,
.gem_prime_mmap = drm_gem_cma_prime_mmap,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = imx_drm_enable_vblank,
.disable_vblank = imx_drm_disable_vblank,
.ioctls = imx_drm_ioctls,

2
drivers/gpu/drm/msm/msm_drv.c
View file

@ -978,7 +978,7 @@ static struct drm_driver msm_driver = {
.irq_preinstall = msm_irq_preinstall,
.irq_postinstall = msm_irq_postinstall,
.irq_uninstall = msm_irq_uninstall,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = msm_enable_vblank,
.disable_vblank = msm_disable_vblank,
.gem_free_object = msm_gem_free_object,

2
drivers/gpu/drm/nouveau/nouveau_drm.c
View file

@ -934,7 +934,7 @@ driver_stub = {
.debugfs_cleanup = nouveau_debugfs_takedown,
#endif
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = nouveau_display_vblank_enable,
.disable_vblank = nouveau_display_vblank_disable,
.get_scanout_position = nouveau_display_scanoutpos,

2
drivers/gpu/drm/omapdrm/omap_drv.c
View file

@ -839,7 +839,7 @@ static struct drm_driver omap_drm_driver = {
.preclose = dev_preclose,
.postclose = dev_postclose,
.set_busid = drm_platform_set_busid,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = omap_irq_enable_vblank,
.disable_vblank = omap_irq_disable_vblank,
#ifdef CONFIG_DEBUG_FS

2
drivers/gpu/drm/rcar-du/rcar_du_drv.c
View file

@ -259,7 +259,7 @@ static struct drm_driver rcar_du_driver = {
.preclose = rcar_du_preclose,
.lastclose = rcar_du_lastclose,
.set_busid = drm_platform_set_busid,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = rcar_du_enable_vblank,
.disable_vblank = rcar_du_disable_vblank,
.gem_free_object = drm_gem_cma_free_object,

2
drivers/gpu/drm/rockchip/rockchip_drm_drv.c
View file

@ -279,7 +279,7 @@ static struct drm_driver rockchip_drm_driver = {
.load = rockchip_drm_load,
.unload = rockchip_drm_unload,
.lastclose = rockchip_drm_lastclose,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = rockchip_drm_crtc_enable_vblank,
.disable_vblank = rockchip_drm_crtc_disable_vblank,
.gem_vm_ops = &rockchip_drm_vm_ops,

2
drivers/gpu/drm/shmobile/shmob_drm_drv.c
View file

@ -269,7 +269,7 @@ static struct drm_driver shmob_drm_driver = {
.preclose = shmob_drm_preclose,
.set_busid = drm_platform_set_busid,
.irq_handler = shmob_drm_irq,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = shmob_drm_enable_vblank,
.disable_vblank = shmob_drm_disable_vblank,
.gem_free_object = drm_gem_cma_free_object,

2
drivers/gpu/drm/sti/sti_drv.c
View file

@ -201,7 +201,7 @@ static struct drm_driver sti_driver = {
.dumb_destroy = drm_gem_dumb_destroy,
.fops = &sti_driver_fops,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = sti_crtc_enable_vblank,
.disable_vblank = sti_crtc_disable_vblank,

2
drivers/gpu/drm/tilcdc/tilcdc_drv.c
View file

@ -563,7 +563,7 @@ static struct drm_driver tilcdc_driver = {
.irq_preinstall = tilcdc_irq_preinstall,
.irq_postinstall = tilcdc_irq_postinstall,
.irq_uninstall = tilcdc_irq_uninstall,
.get_vblank_counter = drm_vblank_count,
.get_vblank_counter = drm_vblank_no_hw_counter,
.enable_vblank = tilcdc_enable_vblank,
.disable_vblank = tilcdc_disable_vblank,
.gem_free_object = drm_gem_cma_free_object,

1
include/drm/drmP.h
View file

@ -953,6 +953,7 @@ extern void drm_crtc_vblank_off(struct drm_crtc *crtc);
extern void drm_crtc_vblank_reset(struct drm_crtc *crtc);
extern void drm_crtc_vblank_on(struct drm_crtc *crtc);
extern void drm_vblank_cleanup(struct drm_device *dev);
extern u32 drm_vblank_no_hw_counter(struct drm_device *dev, unsigned int pipe);
extern int drm_calc_vbltimestamp_from_scanoutpos(struct drm_device *dev,
unsigned int pipe, int *max_error,