Merge tag 'imx-drm-next-2018-12-03' of git://git.pengutronix.de/git/pza/linux into drm-next

drm/imx: update image-convert with fixes for multi-tiled scaling

Update the ipu-v3 mem2mem image-convert code, with some fixes for race
conditions, alignment issues, and visual artifacts due to tile alignment
and scaling factor issues when scaling images larger than hardware
limitations in multiple tiles. This will allow the V4L2 mem2mem scaler
driver to write output images larger than 1024x1024 pixels.

Also switch drm/imx source files to SPDX license identifiers, constify
struct clk_ops in imx-tve, and add a timeout warning to the busy wait in
ipu_plane_disable().

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/1543835266.5647.1.camel@pengutronix.de

7 files changed, 15 insertions, 61 deletions

diff --git a/drivers/gpu/drm/imx/dw_hdmi-imx.c b/drivers/gpu/drm/imx/dw_hdmi-imx.c
index fe6becdcc29e..77a26fd3a44a 100644
--- a/drivers/gpu/drm/imx/dw_hdmi-imx.c
+++ b/drivers/gpu/drm/imx/dw_hdmi-imx.c
@@ -1,10 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Copyright (C) 2011-2013 Freescale Semiconductor, Inc.
  *
  * derived from imx-hdmi.c(renamed to bridge/dw_hdmi.c now)
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 #include <linux/module.h>
 #include <linux/platform_device.h>
diff --git a/drivers/gpu/drm/imx/imx-drm-core.c b/drivers/gpu/drm/imx/imx-drm-core.c
index 0e6942f21a4e..820c7e3878f0 100644
--- a/drivers/gpu/drm/imx/imx-drm-core.c
+++ b/drivers/gpu/drm/imx/imx-drm-core.c
@@ -1,17 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Freescale i.MX drm driver
  *
  * Copyright (C) 2011 Sascha Hauer, Pengutronix
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
  */
 #include <linux/component.h>
 #include <linux/device.h>
diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index 3bd0f8a18e74..2c5bbe317353 100644
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX drm driver - LVDS display bridge
  *
  * Copyright (C) 2012 Sascha Hauer, Pengutronix
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <linux/module.h>
diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index cffd3310240e..293dd5752583 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX drm driver - Television Encoder (TVEv2)
  *
  * Copyright (C) 2013 Philipp Zabel, Pengutronix
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <linux/clk.h>
@@ -442,7 +434,7 @@ static int clk_tve_di_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
-static struct clk_ops clk_tve_di_ops = {
+static const struct clk_ops clk_tve_di_ops = {
 	.round_rate = clk_tve_di_round_rate,
 	.set_rate = clk_tve_di_set_rate,
 	.recalc_rate = clk_tve_di_recalc_rate,
diff --git a/drivers/gpu/drm/imx/ipuv3-crtc.c b/drivers/gpu/drm/imx/ipuv3-crtc.c
index 7d4b710b837a..058b53c0aa7e 100644
--- a/drivers/gpu/drm/imx/ipuv3-crtc.c
+++ b/drivers/gpu/drm/imx/ipuv3-crtc.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX IPUv3 Graphics driver
  *
  * Copyright (C) 2011 Sascha Hauer, Pengutronix
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 #include <linux/component.h>
 #include <linux/module.h>
diff --git a/drivers/gpu/drm/imx/ipuv3-plane.c b/drivers/gpu/drm/imx/ipuv3-plane.c
index 40605fdf0e33..c390924de93d 100644
--- a/drivers/gpu/drm/imx/ipuv3-plane.c
+++ b/drivers/gpu/drm/imx/ipuv3-plane.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX IPUv3 DP Overlay Planes
  *
  * Copyright (C) 2013 Philipp Zabel, Pengutronix
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <drm/drmP.h>
@@ -236,9 +228,15 @@ static void ipu_plane_enable(struct ipu_plane *ipu_plane)
 
 void ipu_plane_disable(struct ipu_plane *ipu_plane, bool disable_dp_channel)
 {
+	int ret;
+
 	DRM_DEBUG_KMS("[%d] %s\n", __LINE__, __func__);
 
-	ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
+	ret = ipu_idmac_wait_busy(ipu_plane->ipu_ch, 50);
+	if (ret == -ETIMEDOUT) {
+		DRM_ERROR("[PLANE:%d] IDMAC timeout\n",
+			  ipu_plane->base.base.id);
+	}
 
 	if (ipu_plane->dp && disable_dp_channel)
 		ipu_dp_disable_channel(ipu_plane->dp, false);
diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index aefd04e18f93..f3ce51121dd6 100644
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0+
 /*
  * i.MX drm driver - parallel display implementation
  *
  * Copyright (C) 2012 Sascha Hauer, Pengutronix
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <linux/component.h>