diff options
| author | Chris Zhong <zyw@rock-chips.com> | 2016-01-06 04:03:53 (GMT) |
|---|---|---|
| committer | Mark Yao <mark.yao@rock-chips.com> | 2016-01-06 05:51:09 (GMT) |
| commit | b59b8de3149736e5094cb786978a1ba8d6d55b34 (patch) | |
| tree | 932624f6f1c833f38744c1ecef3266ea8e2c9f8c /drivers/gpu/drm/rockchip | |
| parent | c11b8989635166c5a1e6aac1853a847bd664f8db (diff) | |
| download | linux-b59b8de3149736e5094cb786978a1ba8d6d55b34.tar.xz | |
drm/rockchip: return a true clock rate to adjusted_mode
Since the mipi dsi driver need to use the clock of vop to make the
calculation of Blanking. But sometimes the clock driver can not set a
accurate clock_rate for vop, get it by clk_round_rate before mode_set,
so we can get the true value.
Signed-off-by: Chris Zhong <zyw@rock-chips.com>
Acked-by: Mark Yao <mark.yao@rock-chips.com>
Diffstat (limited to 'drivers/gpu/drm/rockchip')
| -rw-r--r-- | drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c index f5b3da2..056cac3 100644 --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c @@ -878,9 +878,14 @@ static bool vop_crtc_mode_fixup(struct drm_crtc *crtc, const struct drm_display_mode *mode, struct drm_display_mode *adjusted_mode) { + struct vop *vop = to_vop(crtc); + if (adjusted_mode->htotal == 0 || adjusted_mode->vtotal == 0) return false; + adjusted_mode->clock = + clk_round_rate(vop->dclk, mode->clock * 1000) / 1000; + return true; } |