drm/exynos/mixer: correct vsync configuration sequence
Specification advises to clear vsync indicator before configuring vsync. Signed-off-by: Andrzej Hajda <a.hajda@samsung.com> Reviewed-by: Joonyoung Shim <jy0922.shim@samsung.com> Signed-off-by: Inki Dae <inki.dae@samsung.com>
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@ -906,8 +906,8 @@ static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
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}
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/* enable vsync interrupt */
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mixer_reg_writemask(res, MXR_INT_EN, MXR_INT_EN_VSYNC,
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MXR_INT_EN_VSYNC);
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mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
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mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
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return 0;
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}
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@ -918,6 +918,7 @@ static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
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struct mixer_resources *res = &mixer_ctx->mixer_res;
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/* disable vsync interrupt */
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mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
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mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
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}
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@ -1046,6 +1047,8 @@ static void mixer_enable(struct exynos_drm_crtc *crtc)
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mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
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if (ctx->int_en & MXR_INT_EN_VSYNC)
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mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
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mixer_reg_write(res, MXR_INT_EN, ctx->int_en);
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mixer_win_reset(ctx);
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}
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