diff options
Diffstat (limited to 'drivers/gpu/drm/vc4/vc4_hdmi_regs.h')
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi_regs.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h index 19d2fdc446bc..fc971506bd4f 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h +++ b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h @@ -1,6 +1,8 @@ #ifndef _VC4_HDMI_REGS_H_ #define _VC4_HDMI_REGS_H_ +#include <linux/pm_runtime.h> + #include "vc4_hdmi.h" #define VC4_HDMI_PACKET_STRIDE 0x24 @@ -412,6 +414,8 @@ static inline u32 vc4_hdmi_read(struct vc4_hdmi *hdmi, const struct vc4_hdmi_variant *variant = hdmi->variant; void __iomem *base; + WARN_ON(!pm_runtime_active(&hdmi->pdev->dev)); + if (reg >= variant->num_registers) { dev_warn(&hdmi->pdev->dev, "Invalid register ID %u\n", reg); @@ -438,6 +442,10 @@ static inline void vc4_hdmi_write(struct vc4_hdmi *hdmi, const struct vc4_hdmi_variant *variant = hdmi->variant; void __iomem *base; + lockdep_assert_held(&hdmi->hw_lock); + + WARN_ON(!pm_runtime_active(&hdmi->pdev->dev)); + if (reg >= variant->num_registers) { dev_warn(&hdmi->pdev->dev, "Invalid register ID %u\n", reg); |