Adds two new functions, ipu_set_csi_src_mux() and ipu_set_ic_src_mux(),
that select the inputs to the CSI and IC respectively. Both muxes are
programmed in the IPU_CONF register.
Signed-off-by: Steve Longerbeam <steve_longerbeam@xxxxxxxxxx>
---
drivers/staging/imx-drm/ipu-v3/ipu-common.c | 51 +++++++++++++++++++++++++++
drivers/staging/imx-drm/ipu-v3/ipu-prv.h | 3 ++
2 files changed, 54 insertions(+)
diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-common.c b/drivers/staging/imx-drm/ipu-v3/ipu-common.c
index 635dafe..1c606b5 100644
--- a/drivers/staging/imx-drm/ipu-v3/ipu-common.c
+++ b/drivers/staging/imx-drm/ipu-v3/ipu-common.c
@@ -777,6 +777,57 @@ static int ipu_memory_reset(struct ipu_soc *ipu)
return 0;
}
+/*
+ * Set the source mux for the given CSI. Selects either parallel or
+ * MIPI CSI2 sources. This is not exported because it is used only
+ * by ipu.
+ */
+void ipu_set_csi_src_mux(struct ipu_soc *ipu, int csi_id, bool mipi_csi2)
+{
+ unsigned long flags;
+ u32 val, mask;
+
+ mask = (csi_id == 1) ? IPU_CONF_CSI1_DATA_SOURCE :
+ IPU_CONF_CSI0_DATA_SOURCE;
+
+ spin_lock_irqsave(&ipu->lock, flags);
+
+ val = ipu_cm_read(ipu, IPU_CONF);
+ if (mipi_csi2)
+ val |= mask;
+ else
+ val &= ~mask;
+ ipu_cm_write(ipu, val, IPU_CONF);
+
+ spin_unlock_irqrestore(&ipu->lock, flags);
+}
+
+/*
+ * Set the source mux for the IC. Selects either CSI[01] or the VDI.
+ * This is not exported because it is used only by ipu.
+ */
+void ipu_set_ic_src_mux(struct ipu_soc *ipu, int csi_id, bool vdi)
+{
+ unsigned long flags;
+ u32 val;
+
+ spin_lock_irqsave(&ipu->lock, flags);
+
+ val = ipu_cm_read(ipu, IPU_CONF);
+ if (vdi) {
+ val |= IPU_CONF_IC_INPUT;
+ } else {
+ val &= ~IPU_CONF_IC_INPUT;
+ if (csi_id == 1)
+ val |= IPU_CONF_CSI_SEL;
+ else
+ val &= ~IPU_CONF_CSI_SEL;
+ }
+ ipu_cm_write(ipu, val, IPU_CONF);
+
+ spin_unlock_irqrestore(&ipu->lock, flags);
+}
+
struct ipu_devtype {
const char *name;
unsigned long cm_ofs;
diff --git a/drivers/staging/imx-drm/ipu-v3/ipu-prv.h b/drivers/staging/imx-drm/ipu-v3/ipu-prv.h
index 90c0c50..69d99b0 100644
--- a/drivers/staging/imx-drm/ipu-v3/ipu-prv.h
+++ b/drivers/staging/imx-drm/ipu-v3/ipu-prv.h
@@ -190,6 +190,9 @@ void ipu_srm_dp_sync_update(struct ipu_soc *ipu);
int ipu_module_enable(struct ipu_soc *ipu, u32 mask);
int ipu_module_disable(struct ipu_soc *ipu, u32 mask);
+void ipu_set_csi_src_mux(struct ipu_soc *ipu, int csi_id, bool mipi_csi2);
+void ipu_set_ic_src_mux(struct ipu_soc *ipu, int csi_id, bool vdi);
+
int ipu_di_init(struct ipu_soc *ipu, struct device *dev, int id,
unsigned long base, u32 module, struct clk *ipu_clk);
void ipu_di_exit(struct ipu_soc *ipu, int id);
--
1.7.9.5
--
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