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69 lines
1.7 KiB
Diff
69 lines
1.7 KiB
Diff
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From 9d058ec3839e19637efc1957cdbbdafd69878acb Mon Sep 17 00:00:00 2001
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From: Eric Anholt <eric@anholt.net>
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Date: Mon, 14 Jan 2019 14:47:57 -0800
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Subject: [PATCH] drm/v3d: Hook up the runtime PM ops.
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In translating the runtime PM code from vc4, I missed the ".pm"
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assignment to actually connect them up. Fixes missing MMU setup if
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runtime PM resets V3D.
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Signed-off-by: Eric Anholt <eric@anholt.net>
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(cherry picked from commit ca197699af29baa8236c74c53d4904ca8957ee06)
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---
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drivers/gpu/drm/v3d/v3d_drv.c | 37 +++++++++++++++++++++++++++++++++++
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1 file changed, 37 insertions(+)
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--- a/drivers/gpu/drm/v3d/v3d_drv.c
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+++ b/drivers/gpu/drm/v3d/v3d_drv.c
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@@ -38,6 +38,42 @@
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#define DRIVER_MINOR 0
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#define DRIVER_PATCHLEVEL 0
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+#ifdef CONFIG_PM
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+static int v3d_runtime_suspend(struct device *dev)
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+{
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+ struct drm_device *drm = dev_get_drvdata(dev);
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+ struct v3d_dev *v3d = to_v3d_dev(drm);
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+
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+ v3d_irq_disable(v3d);
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+
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+ clk_disable_unprepare(v3d->clk);
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+
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+ return 0;
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+}
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+
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+static int v3d_runtime_resume(struct device *dev)
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+{
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+ struct drm_device *drm = dev_get_drvdata(dev);
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+ struct v3d_dev *v3d = to_v3d_dev(drm);
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+ int ret;
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+
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+ ret = clk_prepare_enable(v3d->clk);
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+ if (ret != 0)
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+ return ret;
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+
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+ /* XXX: VPM base */
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+
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+ v3d_mmu_set_page_table(v3d);
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+ v3d_irq_enable(v3d);
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+
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+ return 0;
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+}
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+#endif
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+
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+static const struct dev_pm_ops v3d_pm_ops = {
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+ SET_RUNTIME_PM_OPS(v3d_runtime_suspend, v3d_runtime_resume, NULL)
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+};
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+
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static int v3d_get_param_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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@@ -332,6 +368,7 @@ static struct platform_driver v3d_platfo
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.driver = {
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.name = "v3d",
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.of_match_table = v3d_of_match,
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+ .pm = &v3d_pm_ops,
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},
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};
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