Commit a2be35e3 authored by Steve Longerbeam's avatar Steve Longerbeam Committed by Philipp Zabel

gpu: ipu-v3: smfc: Add ipu_smfc_set_watermark()

Adds ipu_smfc_set_watermark() which programs a channel's SMFC FIFO
levels at which the watermark signal is set and cleared.
Signed-off-by: default avatarSteve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent 7fafa8f0
...@@ -80,6 +80,26 @@ int ipu_smfc_map_channel(struct ipu_smfc *smfc, int csi_id, int mipi_id) ...@@ -80,6 +80,26 @@ int ipu_smfc_map_channel(struct ipu_smfc *smfc, int csi_id, int mipi_id)
} }
EXPORT_SYMBOL_GPL(ipu_smfc_map_channel); EXPORT_SYMBOL_GPL(ipu_smfc_map_channel);
int ipu_smfc_set_watermark(struct ipu_smfc *smfc, u32 set_level, u32 clr_level)
{
struct ipu_smfc_priv *priv = smfc->priv;
unsigned long flags;
u32 val, shift;
spin_lock_irqsave(&priv->lock, flags);
shift = smfc->chno * 6 + (smfc->chno > 1 ? 4 : 0);
val = readl(priv->base + SMFC_WMC);
val &= ~(0x3f << shift);
val |= ((clr_level << 3) | set_level) << shift;
writel(val, priv->base + SMFC_WMC);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
EXPORT_SYMBOL_GPL(ipu_smfc_set_watermark);
int ipu_smfc_enable(struct ipu_smfc *smfc) int ipu_smfc_enable(struct ipu_smfc *smfc)
{ {
struct ipu_smfc_priv *priv = smfc->priv; struct ipu_smfc_priv *priv = smfc->priv;
......
...@@ -296,6 +296,7 @@ int ipu_smfc_enable(struct ipu_smfc *smfc); ...@@ -296,6 +296,7 @@ int ipu_smfc_enable(struct ipu_smfc *smfc);
int ipu_smfc_disable(struct ipu_smfc *smfc); int ipu_smfc_disable(struct ipu_smfc *smfc);
int ipu_smfc_map_channel(struct ipu_smfc *smfc, int csi_id, int mipi_id); int ipu_smfc_map_channel(struct ipu_smfc *smfc, int csi_id, int mipi_id);
int ipu_smfc_set_burstsize(struct ipu_smfc *smfc, int burstsize); int ipu_smfc_set_burstsize(struct ipu_smfc *smfc, int burstsize);
int ipu_smfc_set_watermark(struct ipu_smfc *smfc, u32 set_level, u32 clr_level);
enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc); enum ipu_color_space ipu_drm_fourcc_to_colorspace(u32 drm_fourcc);
enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat); enum ipu_color_space ipu_pixelformat_to_colorspace(u32 pixelformat);
......
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