If the CSI-2 receiver isn't part of the pipeline (or isn't there to begin
with), skip its initialisation.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Tested-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> # on Beagleboard-xM + MPT9P031
Acked-by: Pavel Machek <pavel@xxxxxx>
---
since v1.1:
- Assign phy->entity before calling omap3isp_csiphy_config(), for
phy->entity is used by omap3isp_csiphy_config(). (Thanks to Pavel for
spotting this.)
drivers/media/platform/omap3isp/ispccp2.c | 2 +-
drivers/media/platform/omap3isp/ispcsi2.c | 4 +--
drivers/media/platform/omap3isp/ispcsiphy.c | 38 +++++++++++++++--------------
drivers/media/platform/omap3isp/ispcsiphy.h | 6 +++--
4 files changed, 27 insertions(+), 23 deletions(-)
diff --git a/drivers/media/platform/omap3isp/ispccp2.c b/drivers/media/platform/omap3isp/ispccp2.c
index 47210b102bcb..3db8df09cd9a 100644
--- a/drivers/media/platform/omap3isp/ispccp2.c
+++ b/drivers/media/platform/omap3isp/ispccp2.c
@@ -841,7 +841,7 @@ static int ccp2_s_stream(struct v4l2_subdev *sd, int enable)
switch (enable) {
case ISP_PIPELINE_STREAM_CONTINUOUS:
if (ccp2->phy) {
- ret = omap3isp_csiphy_acquire(ccp2->phy);
+ ret = omap3isp_csiphy_acquire(ccp2->phy, &sd->entity);
if (ret < 0)
return ret;
}
diff --git a/drivers/media/platform/omap3isp/ispcsi2.c b/drivers/media/platform/omap3isp/ispcsi2.c
index 7dae2fe0d42d..3ec37fed710b 100644
--- a/drivers/media/platform/omap3isp/ispcsi2.c
+++ b/drivers/media/platform/omap3isp/ispcsi2.c
@@ -490,7 +490,7 @@ int omap3isp_csi2_reset(struct isp_csi2_device *csi2)
if (!csi2->available)
return -ENODEV;
- if (csi2->phy->phy_in_use)
+ if (csi2->phy->entity)
return -EBUSY;
isp_reg_set(isp, csi2->regs1, ISPCSI2_SYSCONFIG,
@@ -1053,7 +1053,7 @@ static int csi2_set_stream(struct v4l2_subdev *sd, int enable)
switch (enable) {
case ISP_PIPELINE_STREAM_CONTINUOUS:
- if (omap3isp_csiphy_acquire(csi2->phy) < 0)
+ if (omap3isp_csiphy_acquire(csi2->phy, &sd->entity) < 0)
return -ENODEV;
if (csi2->output & CSI2_OUTPUT_MEMORY)
omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CSI2A_WRITE);
diff --git a/drivers/media/platform/omap3isp/ispcsiphy.c b/drivers/media/platform/omap3isp/ispcsiphy.c
index 2028bb519108..aedd88fa8246 100644
--- a/drivers/media/platform/omap3isp/ispcsiphy.c
+++ b/drivers/media/platform/omap3isp/ispcsiphy.c
@@ -164,15 +164,18 @@ static int csiphy_set_power(struct isp_csiphy *phy, u32 power)
static int omap3isp_csiphy_config(struct isp_csiphy *phy)
{
- struct isp_csi2_device *csi2 = phy->csi2;
- struct isp_pipeline *pipe = to_isp_pipeline(&csi2->subdev.entity);
- struct isp_bus_cfg *buscfg = pipe->external->host_priv;
+ struct isp_pipeline *pipe = to_isp_pipeline(phy->entity);
+ struct isp_bus_cfg *buscfg;
struct isp_csiphy_lanes_cfg *lanes;
int csi2_ddrclk_khz;
unsigned int num_data_lanes, used_lanes = 0;
unsigned int i;
u32 reg;
+ if (!pipe)
+ return -EBUSY;
+
+ buscfg = pipe->external->host_priv;
if (!buscfg) {
struct isp_async_subdev *isd =
container_of(pipe->external->asd,
@@ -222,7 +225,7 @@ static int omap3isp_csiphy_config(struct isp_csiphy *phy)
csi2_ddrclk_khz = pipe->external_rate / 1000
/ (2 * hweight32(used_lanes)) * pipe->external_width;
- reg = isp_reg_readl(csi2->isp, phy->phy_regs, ISPCSIPHY_REG0);
+ reg = isp_reg_readl(phy->isp, phy->phy_regs, ISPCSIPHY_REG0);
reg &= ~(ISPCSIPHY_REG0_THS_TERM_MASK |
ISPCSIPHY_REG0_THS_SETTLE_MASK);
@@ -233,9 +236,9 @@ static int omap3isp_csiphy_config(struct isp_csiphy *phy)
reg |= (DIV_ROUND_UP(90 * csi2_ddrclk_khz, 1000000) + 3)
<< ISPCSIPHY_REG0_THS_SETTLE_SHIFT;
- isp_reg_writel(csi2->isp, reg, phy->phy_regs, ISPCSIPHY_REG0);
+ isp_reg_writel(phy->isp, reg, phy->phy_regs, ISPCSIPHY_REG0);
- reg = isp_reg_readl(csi2->isp, phy->phy_regs, ISPCSIPHY_REG1);
+ reg = isp_reg_readl(phy->isp, phy->phy_regs, ISPCSIPHY_REG1);
reg &= ~(ISPCSIPHY_REG1_TCLK_TERM_MASK |
ISPCSIPHY_REG1_TCLK_MISS_MASK |
@@ -244,10 +247,10 @@ static int omap3isp_csiphy_config(struct isp_csiphy *phy)
reg |= TCLK_MISS << ISPCSIPHY_REG1_TCLK_MISS_SHIFT;
reg |= TCLK_SETTLE << ISPCSIPHY_REG1_TCLK_SETTLE_SHIFT;
- isp_reg_writel(csi2->isp, reg, phy->phy_regs, ISPCSIPHY_REG1);
+ isp_reg_writel(phy->isp, reg, phy->phy_regs, ISPCSIPHY_REG1);
/* DPHY lane configuration */
- reg = isp_reg_readl(csi2->isp, phy->cfg_regs, ISPCSI2_PHY_CFG);
+ reg = isp_reg_readl(phy->isp, phy->cfg_regs, ISPCSI2_PHY_CFG);
for (i = 0; i < num_data_lanes; i++) {
reg &= ~(ISPCSI2_PHY_CFG_DATA_POL_MASK(i + 1) |
@@ -263,12 +266,12 @@ static int omap3isp_csiphy_config(struct isp_csiphy *phy)
reg |= lanes->clk.pol << ISPCSI2_PHY_CFG_CLOCK_POL_SHIFT;
reg |= lanes->clk.pos << ISPCSI2_PHY_CFG_CLOCK_POSITION_SHIFT;
- isp_reg_writel(csi2->isp, reg, phy->cfg_regs, ISPCSI2_PHY_CFG);
+ isp_reg_writel(phy->isp, reg, phy->cfg_regs, ISPCSI2_PHY_CFG);
return 0;
}
-int omap3isp_csiphy_acquire(struct isp_csiphy *phy)
+int omap3isp_csiphy_acquire(struct isp_csiphy *phy, struct media_entity *entity)
{
int rval;
@@ -288,6 +291,8 @@ int omap3isp_csiphy_acquire(struct isp_csiphy *phy)
if (rval < 0)
goto done;
+ phy->entity = entity;
+
rval = omap3isp_csiphy_config(phy);
if (rval < 0)
goto done;
@@ -301,10 +306,9 @@ int omap3isp_csiphy_acquire(struct isp_csiphy *phy)
csiphy_power_autoswitch_enable(phy, true);
}
-
- phy->phy_in_use = 1;
-
done:
+ phy->entity = NULL;
+
mutex_unlock(&phy->mutex);
return rval;
}
@@ -312,10 +316,8 @@ int omap3isp_csiphy_acquire(struct isp_csiphy *phy)
void omap3isp_csiphy_release(struct isp_csiphy *phy)
{
mutex_lock(&phy->mutex);
- if (phy->phy_in_use) {
- struct isp_csi2_device *csi2 = phy->csi2;
- struct isp_pipeline *pipe =
- to_isp_pipeline(&csi2->subdev.entity);
+ if (phy->entity && phy->entity->pipe) {
+ struct isp_pipeline *pipe = to_isp_pipeline(phy->entity);
struct isp_bus_cfg *buscfg = pipe->external->host_priv;
csiphy_routing_cfg(phy, buscfg->interface, false,
@@ -325,7 +327,7 @@ void omap3isp_csiphy_release(struct isp_csiphy *phy)
csiphy_set_power(phy, ISPCSI2_PHY_CFG_PWR_CMD_OFF);
}
regulator_disable(phy->vdd);
- phy->phy_in_use = 0;
+ phy->entity = NULL;
}
mutex_unlock(&phy->mutex);
}
diff --git a/drivers/media/platform/omap3isp/ispcsiphy.h b/drivers/media/platform/omap3isp/ispcsiphy.h
index 978ca5c80a6c..cffda0265767 100644
--- a/drivers/media/platform/omap3isp/ispcsiphy.h
+++ b/drivers/media/platform/omap3isp/ispcsiphy.h
@@ -25,9 +25,10 @@ struct regulator;
struct isp_csiphy {
struct isp_device *isp;
struct mutex mutex; /* serialize csiphy configuration */
- u8 phy_in_use;
struct isp_csi2_device *csi2;
struct regulator *vdd;
+ /* the entity for which the phy was acquired for */
+ struct media_entity *entity;
/* mem resources - enums as defined in enum isp_mem_resources */
unsigned int cfg_regs;
@@ -36,7 +37,8 @@ struct isp_csiphy {
u8 num_data_lanes; /* number of CSI2 Data Lanes supported */
};
-int omap3isp_csiphy_acquire(struct isp_csiphy *phy);
+int omap3isp_csiphy_acquire(struct isp_csiphy *phy,
+ struct media_entity *entity);
void omap3isp_csiphy_release(struct isp_csiphy *phy);
int omap3isp_csiphy_init(struct isp_device *isp);
void omap3isp_csiphy_cleanup(struct isp_device *isp);
--
2.11.0
