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Subject[PATCH v6 09/17] media: qcom: camss: Remove special case for VFE get/put
Date
From sdm845 onwards we need to ensure the VFE is powered on prior to
switching on the CSID.

Currently the code tests for sdm845, sm8250 and then does get/set. This is
not extensible and it turns out is not necessary either since vfe_get and
vfe_set reference count.

Remove the over-conservative SoC version check.

Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # rb3 # db410c
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
drivers/media/platform/qcom/camss/camss-csid.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)

diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c
index 99f651e2021cb..95873f988f7e2 100644
--- a/drivers/media/platform/qcom/camss/camss-csid.c
+++ b/drivers/media/platform/qcom/camss/camss-csid.c
@@ -159,15 +159,17 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
struct camss *camss = csid->camss;
struct device *dev = camss->dev;
struct vfe_device *vfe = &camss->vfe[csid->id];
- u32 version = camss->res->version;
int ret = 0;

if (on) {
- if (version == CAMSS_8250 || version == CAMSS_845) {
- ret = vfe_get(vfe);
- if (ret < 0)
- return ret;
- }
+ /*
+ * From SDM845 onwards, the VFE needs to be powered on before
+ * switching on the CSID. Do so unconditionally, as there is no
+ * drawback in following the same powering order on older SoCs.
+ */
+ ret = vfe_get(vfe);
+ if (ret < 0)
+ return ret;

ret = pm_runtime_resume_and_get(dev);
if (ret < 0)
@@ -217,8 +219,7 @@ static int csid_set_power(struct v4l2_subdev *sd, int on)
regulator_bulk_disable(csid->num_supplies,
csid->supplies);
pm_runtime_put_sync(dev);
- if (version == CAMSS_8250 || version == CAMSS_845)
- vfe_put(vfe);
+ vfe_put(vfe);
}

return ret;
--
2.42.0
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