diff options
author | Emily Deng <Emily.Deng@amd.com> | 2016-08-08 11:35:39 +0800 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2016-08-08 14:07:18 -0400 |
commit | 46ac3622437692c371f3e647dc29f99e14b4f596 (patch) | |
tree | 57aa5896cfe1f21ba7696f8bd5ed991f6c342419 /drivers | |
parent | 83c9b0253b1136b1312fd2a0bfd173f625c65091 (diff) | |
download | linux-stable-46ac3622437692c371f3e647dc29f99e14b4f596.tar.gz linux-stable-46ac3622437692c371f3e647dc29f99e14b4f596.tar.bz2 linux-stable-46ac3622437692c371f3e647dc29f99e14b4f596.zip |
drm/amdgpu: Use software timer to generate vsync interrupt.
For virtual display feature, use the software timer to
simulate the vsync interrupt.
Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | 4 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/amdgpu/dce_virtual.c | 33 | ||||
-rw-r--r-- | 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 6b1d7d306564..b1ae33bdbd84 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h @@ -39,6 +39,8 @@ #include <drm/drm_plane_helper.h> #include <linux/i2c.h> #include <linux/i2c-algo-bit.h> +#include <linux/hrtimer.h> +#include "amdgpu_irq.h" struct amdgpu_bo; struct amdgpu_device; @@ -339,6 +341,8 @@ struct amdgpu_mode_info { int num_dig; /* number of dig blocks */ int disp_priority; const struct amdgpu_display_funcs *funcs; + 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 c7da45c2c8fe..ace52a342e64 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); @@ -642,16 +643,44 @@ static void dce_virtual_set_display_funcs(struct amdgpu_device *adev) adev->mode_info.funcs = &dce_virtual_display_funcs; } +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 d205d7f6f6ab..e239243f6ebc 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 |