diff options
| author | Liu Ying <gnuiyl@gmail.com> | 2016-07-08 12:40:54 +0300 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2016-07-12 19:23:43 +0300 |
| commit | d7868cb7ac58640e9c0383205ba31bd6a985cc6f (patch) | |
| tree | a48b7c406b07eb765f39cb85e63c9a215e7cb1df /drivers/gpu/drm/imx | |
| parent | 08a8901882709c6fb9e6158d57f59c1d16eb45cd (diff) | |
| download | linux-d7868cb7ac58640e9c0383205ba31bd6a985cc6f.tar.xz | |
gpu: ipu-v3: ipu-dmfc: Use static DMFC FIFO allocation mechanism
For all video modes we support currently, we always get 2 slots for
a plane by using the current existing dynamic DMFC FIFO allocation
mechanism. So, let's change to use the static one to simplify the
code. This also makes it easier to implement the atomic mode setting
as we don't need to handle allocation failure cases then.
Signed-off-by: Liu Ying <gnuiyl@gmail.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Diffstat (limited to 'drivers/gpu/drm/imx')
| -rw-r--r-- | drivers/gpu/drm/imx/ipuv3-plane.c | 26 |
1 files changed, 0 insertions, 26 deletions
diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c index cd7eb2658757..02701de370c7 100644 --- a/drivers/gpu/drm/imx/ipuv3-plane.c +++ b/drivers/gpu/drm/imx/ipuv3-plane.c @@ -53,24 +53,6 @@ int ipu_plane_irq(struct ipu_plane *ipu_plane) IPU_IRQ_EOF); } -static int calc_vref(struct drm_display_mode *mode) -{ - unsigned long htotal, vtotal; - - htotal = mode->htotal; - vtotal = mode->vtotal; - - if (!htotal || !vtotal) - return 60; - - return DIV_ROUND_UP(mode->clock * 1000, vtotal * htotal); -} - -static inline int calc_bandwidth(int width, int height, unsigned int vref) -{ - return width * height * vref; -} - int ipu_plane_set_base(struct ipu_plane *ipu_plane, struct drm_framebuffer *fb, int x, int y) { @@ -291,14 +273,6 @@ int ipu_plane_mode_set(struct ipu_plane *ipu_plane, struct drm_crtc *crtc, } } - ret = ipu_dmfc_alloc_bandwidth(ipu_plane->dmfc, - calc_bandwidth(crtc_w, crtc_h, - calc_vref(mode)), 64); - if (ret) { - dev_err(dev, "allocating dmfc bandwidth failed with %d\n", ret); - return ret; - } - ipu_dmfc_config_wait4eot(ipu_plane->dmfc, crtc_w); ipu_cpmem_zero(ipu_plane->ipu_ch); |