From 440421967fc6acaa05fcf5c83c855d25277de512 Mon Sep 17 00:00:00 2001
From: Paul Cercueil <paul@crapouillou.net>
Date: Thu, 16 Jul 2020 18:38:40 +0200
Subject: drm/ingenic: Set DMA descriptor chain address in probe
Git-commit: e5507d2c01362b4953edb05dc84203be25eea737
Patch-mainline: v5.9-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
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
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
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");
--
2.29.2