summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/tilcdc/tilcdc_regs.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/tilcdc/tilcdc_regs.h')
-rw-r--r--drivers/gpu/drm/tilcdc/tilcdc_regs.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_regs.h b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
index 1bf5e2553acc..f57c0d62c76a 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_regs.h
+++ b/drivers/gpu/drm/tilcdc/tilcdc_regs.h
@@ -119,6 +119,20 @@ static inline void tilcdc_write(struct drm_device *dev, u32 reg, u32 data)
iowrite32(data, priv->mmio + reg);
}
+static inline void tilcdc_write64(struct drm_device *dev, u32 reg, u64 data)
+{
+ struct tilcdc_drm_private *priv = dev->dev_private;
+ volatile void __iomem *addr = priv->mmio + reg;
+
+#ifdef iowrite64
+ iowrite64(data, addr);
+#else
+ __iowmb();
+ /* This compiles to strd (=64-bit write) on ARM7 */
+ *(volatile u64 __force *)addr = __cpu_to_le64(data);
+#endif
+}
+
static inline u32 tilcdc_read(struct drm_device *dev, u32 reg)
{
struct tilcdc_drm_private *priv = dev->dev_private;