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| 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_hw.h | |
| parent | 46f1d42f273836a3b8840637b9ee3d98a528ffd2 (diff) | |
| download | lwn-85f6421889eca68ceb0a0403c4c00b2eaf3c16e0.tar.gz lwn-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_hw.h')
| -rw-r--r-- | drivers/gpu/drm/arm/malidp_hw.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/arm/malidp_hw.h b/drivers/gpu/drm/arm/malidp_hw.h index 00974b59407d..ea2dbae08990 100644 --- a/drivers/gpu/drm/arm/malidp_hw.h +++ b/drivers/gpu/drm/arm/malidp_hw.h @@ -156,6 +156,9 @@ struct malidp_hw_device { u8 min_line_size; u16 max_line_size; + /* track the device PM state */ + bool pm_suspended; + /* size of memory used for rotating layers, up to two banks available */ u32 rotation_memory[2]; }; @@ -173,12 +176,14 @@ extern const struct malidp_hw_device malidp_device[MALIDP_MAX_DEVICES]; static inline u32 malidp_hw_read(struct malidp_hw_device *hwdev, u32 reg) { + WARN_ON(hwdev->pm_suspended); return readl(hwdev->regs + reg); } static inline void malidp_hw_write(struct malidp_hw_device *hwdev, u32 value, u32 reg) { + WARN_ON(hwdev->pm_suspended); writel(value, hwdev->regs + reg); } |