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gpu: ipu-v3: pre: add double buffer status readback
This allows the upper layers to check if a double buffer update has been applied by the PRE or is still pending. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> [p.zabel@pengutronix.de: inverted logic: done -> pending] Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
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@ -265,6 +265,12 @@ void ipu_pre_update(struct ipu_pre *pre, unsigned int bufaddr)
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writel(IPU_PRE_CTRL_SDW_UPDATE, pre->regs + IPU_PRE_CTRL_SET);
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writel(IPU_PRE_CTRL_SDW_UPDATE, pre->regs + IPU_PRE_CTRL_SET);
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}
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}
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bool ipu_pre_update_pending(struct ipu_pre *pre)
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{
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return !!(readl_relaxed(pre->regs + IPU_PRE_CTRL) &
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IPU_PRE_CTRL_SDW_UPDATE);
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}
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u32 ipu_pre_get_baddr(struct ipu_pre *pre)
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u32 ipu_pre_get_baddr(struct ipu_pre *pre)
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{
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{
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return (u32)pre->buffer_paddr;
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return (u32)pre->buffer_paddr;
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@ -272,6 +272,7 @@ void ipu_pre_configure(struct ipu_pre *pre, unsigned int width,
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unsigned int height, unsigned int stride, u32 format,
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unsigned int height, unsigned int stride, u32 format,
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uint64_t modifier, unsigned int bufaddr);
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uint64_t modifier, unsigned int bufaddr);
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void ipu_pre_update(struct ipu_pre *pre, unsigned int bufaddr);
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void ipu_pre_update(struct ipu_pre *pre, unsigned int bufaddr);
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bool ipu_pre_update_pending(struct ipu_pre *pre);
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struct ipu_prg *ipu_prg_lookup_by_phandle(struct device *dev, const char *name,
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struct ipu_prg *ipu_prg_lookup_by_phandle(struct device *dev, const char *name,
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int ipu_id);
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int ipu_id);
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