diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0157-drm-v3d-Hook-up-the-runtime-PM-ops.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0157-drm-v3d-Hook-up-the-runtime-PM-ops.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0157-drm-v3d-Hook-up-the-runtime-PM-ops.patch b/target/linux/bcm27xx/patches-5.15/950-0157-drm-v3d-Hook-up-the-runtime-PM-ops.patch new file mode 100644 index 0000000000..1288680009 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0157-drm-v3d-Hook-up-the-runtime-PM-ops.patch @@ -0,0 +1,68 @@ +From 9d058ec3839e19637efc1957cdbbdafd69878acb Mon Sep 17 00:00:00 2001 +From: Eric Anholt <eric@anholt.net> +Date: Mon, 14 Jan 2019 14:47:57 -0800 +Subject: [PATCH] drm/v3d: Hook up the runtime PM ops. + +In translating the runtime PM code from vc4, I missed the ".pm" +assignment to actually connect them up. Fixes missing MMU setup if +runtime PM resets V3D. + +Signed-off-by: Eric Anholt <eric@anholt.net> +(cherry picked from commit ca197699af29baa8236c74c53d4904ca8957ee06) +--- + drivers/gpu/drm/v3d/v3d_drv.c | 37 +++++++++++++++++++++++++++++++++++ + 1 file changed, 37 insertions(+) + +--- a/drivers/gpu/drm/v3d/v3d_drv.c ++++ b/drivers/gpu/drm/v3d/v3d_drv.c +@@ -38,6 +38,42 @@ + #define DRIVER_MINOR 0 + #define DRIVER_PATCHLEVEL 0 + ++#ifdef CONFIG_PM ++static int v3d_runtime_suspend(struct device *dev) ++{ ++ struct drm_device *drm = dev_get_drvdata(dev); ++ struct v3d_dev *v3d = to_v3d_dev(drm); ++ ++ v3d_irq_disable(v3d); ++ ++ clk_disable_unprepare(v3d->clk); ++ ++ return 0; ++} ++ ++static int v3d_runtime_resume(struct device *dev) ++{ ++ struct drm_device *drm = dev_get_drvdata(dev); ++ struct v3d_dev *v3d = to_v3d_dev(drm); ++ int ret; ++ ++ ret = clk_prepare_enable(v3d->clk); ++ if (ret != 0) ++ return ret; ++ ++ /* XXX: VPM base */ ++ ++ v3d_mmu_set_page_table(v3d); ++ v3d_irq_enable(v3d); ++ ++ return 0; ++} ++#endif ++ ++static const struct dev_pm_ops v3d_pm_ops = { ++ SET_RUNTIME_PM_OPS(v3d_runtime_suspend, v3d_runtime_resume, NULL) ++}; ++ + static int v3d_get_param_ioctl(struct drm_device *dev, void *data, + struct drm_file *file_priv) + { +@@ -332,6 +368,7 @@ static struct platform_driver v3d_platfo + .driver = { + .name = "v3d", + .of_match_table = v3d_of_match, ++ .pm = &v3d_pm_ops, + }, + }; + |