drm/ingenic: Set DMA descriptor chain address in probe

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>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20200716163846.174790-6-paul@crapouillou.net

diff --git a/drivers/gpu/drm/ingenic/ingenic-drm-drv.c b/drivers/gpu/drm/ingenic/ingenic-drm-drv.c
index 9e845234c7b5840091c12e92d3309f1f4a392e69..c769a54f02742eda3d7b53a0a987091267f43451 100644 (file)
--- 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");