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| author | Lucas Stach <l.stach@pengutronix.de> | 2018-09-11 15:20:34 +0200 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2019-02-22 11:58:45 +0100 |
| commit | 0a29b1abaf5ba86b2ef5da5a1403ff64dc0d9449 (patch) | |
| tree | 89ead7c32316adc13d6b97c949b70a862e4aae93 /drivers/gpu/ipu-v3 | |
| parent | a3b22b9f11d9fbc48b0291ea92259a5a810e9438 (diff) | |
| download | linux-0a29b1abaf5ba86b2ef5da5a1403ff64dc0d9449.tar.bz2 | |
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>
Diffstat (limited to 'drivers/gpu/ipu-v3')
| -rw-r--r-- | drivers/gpu/ipu-v3/ipu-pre.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/ipu-v3/ipu-prv.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/ipu-v3/ipu-pre.c b/drivers/gpu/ipu-v3/ipu-pre.c index 4a28f3fbb0a2..6cacfd61d984 100644 --- a/drivers/gpu/ipu-v3/ipu-pre.c +++ b/drivers/gpu/ipu-v3/ipu-pre.c @@ -265,6 +265,12 @@ void ipu_pre_update(struct ipu_pre *pre, unsigned int bufaddr) writel(IPU_PRE_CTRL_SDW_UPDATE, pre->regs + IPU_PRE_CTRL_SET); } +bool ipu_pre_update_pending(struct ipu_pre *pre) +{ + return !!(readl_relaxed(pre->regs + IPU_PRE_CTRL) & + IPU_PRE_CTRL_SDW_UPDATE); +} + u32 ipu_pre_get_baddr(struct ipu_pre *pre) { return (u32)pre->buffer_paddr; diff --git a/drivers/gpu/ipu-v3/ipu-prv.h b/drivers/gpu/ipu-v3/ipu-prv.h index d6beee99b6b8..38622e835e95 100644 --- a/drivers/gpu/ipu-v3/ipu-prv.h +++ b/drivers/gpu/ipu-v3/ipu-prv.h @@ -272,6 +272,7 @@ void ipu_pre_configure(struct ipu_pre *pre, unsigned int width, unsigned int height, unsigned int stride, u32 format, uint64_t modifier, unsigned int bufaddr); void ipu_pre_update(struct ipu_pre *pre, unsigned int bufaddr); +bool ipu_pre_update_pending(struct ipu_pre *pre); struct ipu_prg *ipu_prg_lookup_by_phandle(struct device *dev, const char *name, int ipu_id); |