diff options
| author |   Liviu Dudau <Liviu.Dudau@arm.com> | 2017-03-22 10:44:57 +0000 |
|---|---|---|
| committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2017-04-24 10:45:33 +0100 |
| commit | 85f6421889eca68ceb0a0403c4c00b2eaf3c16e0 (patch) | |
| tree | d010c422ee0fbe187dc7c42e1326d66ce910e412 /drivers/gpu/drm/arm/malidp_crtc.c | |
| parent | drm: mali-dp: Update the state of all planes before re-enabling active CRTCs. (diff) | |
| download | linux-dev-85f6421889eca68ceb0a0403c4c00b2eaf3c16e0.tar.xz linux-dev-85f6421889eca68ceb0a0403c4c00b2eaf3c16e0.zip | |
drm: mali-dp: Enable power management for the device.
Enable runtime and system Power Management. Clocks are now managed
from malidp_crtc_{enable,disable} functions. Suspend-to-RAM tested
as working on Juno.
Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
Diffstat (limited to 'drivers/gpu/drm/arm/malidp_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/arm/malidp_crtc.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/gpu/drm/arm/malidp_crtc.c b/drivers/gpu/drm/arm/malidp_crtc.c index f9d665550d3e..fab776c37602 100644 --- a/drivers/gpu/drm/arm/malidp_crtc.c +++ b/drivers/gpu/drm/arm/malidp_crtc.c @@ -16,6 +16,7 @@ #include <drm/drm_crtc.h> #include <drm/drm_crtc_helper.h> #include <linux/clk.h> +#include <linux/pm_runtime.h> #include <video/videomode.h> #include "malidp_drv.h" @@ -58,9 +59,14 @@ static void malidp_crtc_enable(struct drm_crtc *crtc) struct malidp_drm *malidp = crtc_to_malidp_device(crtc); struct malidp_hw_device *hwdev = malidp->dev; struct videomode vm; + int err = pm_runtime_get_sync(crtc->dev->dev); - drm_display_mode_to_videomode(&crtc->state->adjusted_mode, &vm); + if (err < 0) { + DRM_DEBUG_DRIVER("Failed to enable runtime power management: %d\n", err); + return; + } + drm_display_mode_to_videomode(&crtc->state->adjusted_mode, &vm); clk_prepare_enable(hwdev->pxlclk); /* We rely on firmware to set mclk to a sensible level. */ @@ -75,10 +81,16 @@ static void malidp_crtc_disable(struct drm_crtc *crtc) { struct malidp_drm *malidp = crtc_to_malidp_device(crtc); struct malidp_hw_device *hwdev = malidp->dev; + int err; drm_crtc_vblank_off(crtc); hwdev->enter_config_mode(hwdev); clk_disable_unprepare(hwdev->pxlclk); + + err = pm_runtime_put(crtc->dev->dev); + if (err < 0) { + DRM_DEBUG_DRIVER("Failed to disable runtime power management: %d\n", err); + } } static int malidp_crtc_atomic_check(struct drm_crtc *crtc, |