For virtual display feature, use the software timer to simulate the vsync interrupt.
Signed-off-by: Emily Deng <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 4 ++++ drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 33 ++++++++++++++++++++++++++++++-- drivers/gpu/drm/amd/amdgpu/dce_virtual.h | 2 ++ 3 files changed, 37 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h index d7cf37c..0c8b404 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h @@ -42,6 +42,8 @@ #include <linux/i2c-algo-bit.h> #include <drm/drm_dp_mst_helper.h> +#include <linux/hrtimer.h> +#include "amdgpu_irq.h" struct amdgpu_bo; struct amdgpu_device; @@ -368,6 +370,8 @@ struct amdgpu_mode_info { int disp_priority; const struct amdgpu_display_funcs *funcs; struct amdgpu_mode_mc_save save; + struct hrtimer vblank_timer; + enum amdgpu_interrupt_state vsync_timer_enabled; }; #define AMDGPU_MAX_BL_LEVEL 0xFF diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c index 21a2e41..00d3844 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c @@ -32,6 +32,7 @@ #endif #include "dce_v10_0.h" #include "dce_v11_0.h" +#include "dce_virtual.h" static void dce_virtual_set_display_funcs(struct amdgpu_device *adev); static void dce_virtual_set_irq_funcs(struct amdgpu_device *adev); @@ -687,16 +688,44 @@ static void dce_virtual_set_display_funcs(struct amdgpu_device *adev) } } +static enum hrtimer_restart dce_virtual_vblank_timer_handle(struct hrtimer *vblank_timer) +{ + struct amdgpu_mode_info *mode_info = container_of(vblank_timer, struct amdgpu_mode_info ,vblank_timer); + struct amdgpu_device *adev = container_of(mode_info, struct amdgpu_device ,mode_info); + unsigned crtc = 0; + adev->ddev->vblank[0].count++; + drm_handle_vblank(adev->ddev, crtc); + hrtimer_start(vblank_timer, ktime_set(0, DCE_VIRTUAL_VBLANK_PERIOD), HRTIMER_MODE_REL); + return HRTIMER_NORESTART; +} + static void dce_virtual_set_crtc_vblank_interrupt_state(struct amdgpu_device *adev, - int crtc, - enum amdgpu_interrupt_state state) + int crtc, + enum amdgpu_interrupt_state state) { if (crtc >= adev->mode_info.num_crtc) { DRM_DEBUG("invalid crtc %d\n", crtc); return; } + + if (state && !adev->mode_info.vsync_timer_enabled) { + DRM_DEBUG("Enable software vsync timer\n"); + hrtimer_init(&adev->mode_info.vblank_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); + hrtimer_set_expires(&adev->mode_info.vblank_timer, ktime_set(0, DCE_VIRTUAL_VBLANK_PERIOD)); + adev->mode_info.vblank_timer.function = dce_virtual_vblank_timer_handle; + hrtimer_start(&adev->mode_info.vblank_timer, ktime_set(0, DCE_VIRTUAL_VBLANK_PERIOD), HRTIMER_MODE_REL); + } else if (!state && adev->mode_info.vsync_timer_enabled) { + DRM_DEBUG("Disable software vsync timer\n"); + hrtimer_cancel(&adev->mode_info.vblank_timer); + } + + if (!state || (state && !adev->mode_info.vsync_timer_enabled)) + adev->ddev->vblank[0].count = 0; + adev->mode_info.vsync_timer_enabled = state; + DRM_DEBUG("[FM]set crtc %d vblank interrupt state %d\n", crtc, state); } + static int dce_virtual_set_crtc_irq_state(struct amdgpu_device *adev, struct amdgpu_irq_src *source, unsigned type, diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.h b/drivers/gpu/drm/amd/amdgpu/dce_virtual.h index d205d7f..e239243 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.h +++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.h @@ -25,5 +25,7 @@ #define __DCE_VIRTUAL_H__ extern const struct amd_ip_funcs dce_virtual_ip_funcs; +#define DCE_VIRTUAL_VBLANK_PERIOD 16666666 + #endif -- 1.9.1 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
