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| author |   Lowry Li (Arm Technology China) <Lowry.Li@arm.com> | 2019-09-23 01:59:25 +0000 |
|---|---|---|
| committer |   james qian wang (Arm Technology China) <james.qian.wang@arm.com> | 2019-09-26 11:29:10 +0800 |
| commit | 2ebb6701654e0d625eac6c32832d72f8e875c01a (patch) | |
| tree | 5a2b9ff275fa73eae85abc29e1e62ef6a07511d2 /drivers/gpu/drm/arm/display/komeda/komeda_drv.c | |
| parent | drm: Destroy the correct mutex name in drm_dp_mst_topology_mgr_destroy (diff) | |
| download | linux-dev-2ebb6701654e0d625eac6c32832d72f8e875c01a.tar.xz linux-dev-2ebb6701654e0d625eac6c32832d72f8e875c01a.zip | |
drm/komeda: Adds power management support
Adds system power management support in KMS kernel driver.
Depends on:
https://patchwork.freedesktop.org/series/62377/
Changes since v1:
Since we have unified mclk/pclk/pipeline->aclk to one mclk, which will
be turned on/off when crtc atomic enable/disable, removed runtime power
management.
Removes run time get/put related flow.
Adds to disable the aclk when register access finished.
Changes since v2:
Rebases to the drm-misc-next branch.
Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@arm.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Signed-off-by: james qian wang (Arm Technology China) <james.qian.wang@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190923015908.26627-1-lowry.li@arm.com
Diffstat (limited to 'drivers/gpu/drm/arm/display/komeda/komeda_drv.c')
| -rw-r--r-- | drivers/gpu/drm/arm/display/komeda/komeda_drv.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c index 69ace6f9055d..d6c2222c5d33 100644 --- a/drivers/gpu/drm/arm/display/komeda/komeda_drv.c +++ b/drivers/gpu/drm/arm/display/komeda/komeda_drv.c @@ -8,6 +8,7 @@ #include <linux/kernel.h> #include <linux/platform_device.h> #include <linux/component.h> +#include <linux/pm_runtime.h> #include <drm/drm_of.h> #include "komeda_dev.h" #include "komeda_kms.h" @@ -136,13 +137,40 @@ static const struct of_device_id komeda_of_match[] = { MODULE_DEVICE_TABLE(of, komeda_of_match); +static int __maybe_unused komeda_pm_suspend(struct device *dev) +{ + struct komeda_drv *mdrv = dev_get_drvdata(dev); + struct drm_device *drm = &mdrv->kms->base; + int res; + + res = drm_mode_config_helper_suspend(drm); + + komeda_dev_suspend(mdrv->mdev); + + return res; +} + +static int __maybe_unused komeda_pm_resume(struct device *dev) +{ + struct komeda_drv *mdrv = dev_get_drvdata(dev); + struct drm_device *drm = &mdrv->kms->base; + + komeda_dev_resume(mdrv->mdev); + + return drm_mode_config_helper_resume(drm); +} + +static const struct dev_pm_ops komeda_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(komeda_pm_suspend, komeda_pm_resume) +}; + static struct platform_driver komeda_platform_driver = { .probe = komeda_platform_probe, .remove = komeda_platform_remove, .driver = { .name = "komeda", .of_match_table = komeda_of_match, - .pm = NULL, + .pm = &komeda_pm_ops, }, }; |