* [PATCH AUTOSEL 4.19 19/27] drm/sun4i: mixer: Call of_dma_configure if there's an IOMMU
[not found] <20200702012615.2701532-1-sashal@kernel.org>
@ 2020-07-02 1:26 ` Sasha Levin
2020-07-02 1:26 ` [PATCH AUTOSEL 4.19 21/27] ARM: imx6: add missing put_device() call in imx6q_suspend_init() Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2020-07-02 1:26 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Paul Kocialkowski, Sasha Levin, Maxime Ripard, dri-devel,
linux-arm-kernel
From: Maxime Ripard <maxime@cerno.tech>
[ Upstream commit 842ec61f4006a6477a9deaedd69131e9f46e4cb5 ]
The main DRM device is actually a virtual device so it doesn't have the
iommus property, which is instead on the DMA masters, in this case the
mixers.
Add a call to of_dma_configure with the mixers DT node but on the DRM
virtual device to configure it in the same way than the mixers.
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/9a4daf438dd3f2fe07afb23688bfb793a0613d7d.1589378833.git-series.maxime@cerno.tech
(cherry picked from commit b718102dbdfd0285ad559687a30e27cc9124e592)
[Maxime: Applied to -fixes since it missed the merge window and display is
broken without it]
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/sun4i/sun8i_mixer.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c
index 71a798e5d5591..ddab3fab36a1a 100644
--- a/drivers/gpu/drm/sun4i/sun8i_mixer.c
+++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c
@@ -435,6 +435,19 @@ static int sun8i_mixer_bind(struct device *dev, struct device *master,
mixer->engine.ops = &sun8i_engine_ops;
mixer->engine.node = dev->of_node;
+ if (of_find_property(dev->of_node, "iommus", NULL)) {
+ /*
+ * This assume we have the same DMA constraints for
+ * all our the mixers in our pipeline. This sounds
+ * bad, but it has always been the case for us, and
+ * DRM doesn't do per-device allocation either, so we
+ * would need to fix DRM first...
+ */
+ ret = of_dma_configure(drm->dev, dev->of_node, true);
+ if (ret)
+ return ret;
+ }
+
/*
* While this function can fail, we shouldn't do anything
* if this happens. Some early DE2 DT entries don't provide
--
2.25.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH AUTOSEL 4.19 21/27] ARM: imx6: add missing put_device() call in imx6q_suspend_init()
[not found] <20200702012615.2701532-1-sashal@kernel.org>
2020-07-02 1:26 ` [PATCH AUTOSEL 4.19 19/27] drm/sun4i: mixer: Call of_dma_configure if there's an IOMMU Sasha Levin
@ 2020-07-02 1:26 ` Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2020-07-02 1:26 UTC (permalink / raw)
To: linux-kernel, stable; +Cc: Sasha Levin, yu kuai, Shawn Guo, linux-arm-kernel
From: yu kuai <yukuai3@huawei.com>
[ Upstream commit 4845446036fc9c13f43b54a65c9b757c14f5141b ]
if of_find_device_by_node() succeed, imx6q_suspend_init() doesn't have a
corresponding put_device(). Thus add a jump target to fix the exception
handling for this function implementation.
Signed-off-by: yu kuai <yukuai3@huawei.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/arm/mach-imx/pm-imx6.c | 10 ++++++----
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c
index 529f4b5bbd3a7..4bfefbec971a6 100644
--- a/arch/arm/mach-imx/pm-imx6.c
+++ b/arch/arm/mach-imx/pm-imx6.c
@@ -497,14 +497,14 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
if (!ocram_pool) {
pr_warn("%s: ocram pool unavailable!\n", __func__);
ret = -ENODEV;
- goto put_node;
+ goto put_device;
}
ocram_base = gen_pool_alloc(ocram_pool, MX6Q_SUSPEND_OCRAM_SIZE);
if (!ocram_base) {
pr_warn("%s: unable to alloc ocram!\n", __func__);
ret = -ENOMEM;
- goto put_node;
+ goto put_device;
}
ocram_pbase = gen_pool_virt_to_phys(ocram_pool, ocram_base);
@@ -527,7 +527,7 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
ret = imx6_pm_get_base(&pm_info->mmdc_base, socdata->mmdc_compat);
if (ret) {
pr_warn("%s: failed to get mmdc base %d!\n", __func__, ret);
- goto put_node;
+ goto put_device;
}
ret = imx6_pm_get_base(&pm_info->src_base, socdata->src_compat);
@@ -574,7 +574,7 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
&imx6_suspend,
MX6Q_SUSPEND_OCRAM_SIZE - sizeof(*pm_info));
- goto put_node;
+ goto put_device;
pl310_cache_map_failed:
iounmap(pm_info->gpc_base.vbase);
@@ -584,6 +584,8 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata)
iounmap(pm_info->src_base.vbase);
src_map_failed:
iounmap(pm_info->mmdc_base.vbase);
+put_device:
+ put_device(&pdev->dev);
put_node:
of_node_put(node);
--
2.25.1
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^ permalink raw reply related [flat|nested] 2+ messages in thread
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2020-07-02 1:26 ` [PATCH AUTOSEL 4.19 19/27] drm/sun4i: mixer: Call of_dma_configure if there's an IOMMU Sasha Levin
2020-07-02 1:26 ` [PATCH AUTOSEL 4.19 21/27] ARM: imx6: add missing put_device() call in imx6q_suspend_init() Sasha Levin
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