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gpu: ipu-v3: csi: pass back mbus_code_to_bus_cfg error codes

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mbus_code_to_bus_cfg() can fail on unknown mbus codes; pass back the
error to the caller.

Signed-off-by: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
[p.zabel@pengutronix.de - renamed rc to ret for consistency]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
This commit is contained in:
Enrico Scholz 2018-05-03 18:29:36 +02:00 committed by Philipp Zabel
parent 7cc3bf3f08
commit d36d0e6309
1 changed files with 16 additions and 4 deletions
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20
drivers/gpu/ipu-v3/ipu-csi.c
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@ -324,13 +324,17 @@ static int mbus_code_to_bus_cfg(struct ipu_csi_bus_config *cfg, u32 mbus_code)
/*
* Fill a CSI bus config struct from mbus_config and mbus_framefmt.
*/
static void fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
static int fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
struct v4l2_mbus_config *mbus_cfg,
struct v4l2_mbus_framefmt *mbus_fmt)
{
int ret;
memset(csicfg, 0, sizeof(*csicfg));
mbus_code_to_bus_cfg(csicfg, mbus_fmt->code);
ret = mbus_code_to_bus_cfg(csicfg, mbus_fmt->code);
if (ret < 0)
return ret;
switch (mbus_cfg->type) {
case V4L2_MBUS_PARALLEL:
@ -362,6 +366,8 @@ static void fill_csi_bus_cfg(struct ipu_csi_bus_config *csicfg,
/* will never get here, keep compiler quiet */
break;
}
return 0;
}
int ipu_csi_init_interface(struct ipu_csi *csi,
@ -371,8 +377,11 @@ int ipu_csi_init_interface(struct ipu_csi *csi,
struct ipu_csi_bus_config cfg;
unsigned long flags;
u32 width, height, data = 0;
int ret;
fill_csi_bus_cfg(&cfg, mbus_cfg, mbus_fmt);
ret = fill_csi_bus_cfg(&cfg, mbus_cfg, mbus_fmt);
if (ret < 0)
return ret;
/* set default sensor frame width and height */
width = mbus_fmt->width;
@ -593,11 +602,14 @@ int ipu_csi_set_mipi_datatype(struct ipu_csi *csi, u32 vc,
struct ipu_csi_bus_config cfg;
unsigned long flags;
u32 temp;
int ret;
if (vc > 3)
return -EINVAL;
mbus_code_to_bus_cfg(&cfg, mbus_fmt->code);
ret = mbus_code_to_bus_cfg(&cfg, mbus_fmt->code);
if (ret < 0)
return ret;
spin_lock_irqsave(&csi->lock, flags);