openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

gpu: ipu-v3: Add functions to set CSI/IC source muxes 

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@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Steve Longerbeam 2014-06-25 18:05:30 -07:00 committed by Philipp Zabel
parent 2eb671c485
commit ba07975f0f
2 changed files with 57 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/gpu/ipu-v3/ipu-common.c
View File

@ -382,6 +382,57 @@ 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.
*/
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);
}
EXPORT_SYMBOL_GPL(ipu_set_csi_src_mux);
/*
* Set the source mux for the IC. Selects either CSI[01] or the VDI.
*/
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);
}
EXPORT_SYMBOL_GPL(ipu_set_ic_src_mux);
struct ipu_devtype {
const char *name;
unsigned long cm_ofs;

6
include/video/imx-ipu-v3.h
View File

@ -92,6 +92,12 @@ int ipu_idmac_channel_irq(struct ipu_soc *ipu, struct ipuv3_channel *channel,
#define IPU_IRQ_VSYNC_PRE_0 (448 + 14)
#define IPU_IRQ_VSYNC_PRE_1 (448 + 15)
/*
* IPU Common functions
*/
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);
/*
* IPU Image DMA Controller (idmac) functions
*/