The address of the DMA descriptor never changes. It can therefore be set in the probe function.
v2-v3: No change
Signed-off-by: Paul Cercueil paul@crapouillou.net --- drivers/gpu/drm/ingenic/ingenic-drm-drv.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c index 9e845234c7b5..c769a54f0274 100644 --- a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c +++ b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c @@ -358,8 +358,6 @@ static void ingenic_drm_crtc_atomic_flush(struct drm_crtc *crtc, ingenic_drm_crtc_update_ctrl(priv, finfo);
clk_set_rate(priv->pix_clk, state->adjusted_mode.clock * 1000); - - regmap_write(priv->map, JZ_REG_LCD_DA0, priv->dma_hwdesc->next); }
if (event) { @@ -757,6 +755,9 @@ static int ingenic_drm_probe(struct platform_device *pdev) } }
+ /* Set address of our DMA descriptor chain */ + regmap_write(priv->map, JZ_REG_LCD_DA0, priv->dma_hwdesc_phys); + ret = drm_dev_register(drm, 0); if (ret) { dev_err(dev, "Failed to register DRM driver\n");