diff options
| author | Jonathan Marek <jonathan@marek.ca> | 2021-12-22 03:37:42 +0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-01-23 23:18:41 +0300 |
| commit | e54ef952d5b0ede16d51ac9ee37c511046d88ada (patch) | |
| tree | 5601e78385871e545e0f34cba4b6c431db64ff96 | |
| parent | ee780cd7be3b5608550bafe7d5f113db2140e99b (diff) | |
| download | linux-e54ef952d5b0ede16d51ac9ee37c511046d88ada.tar.xz | |
media: camss: csid: allow csid to work without a regulator
At least for titan HW, CSID don't have an associated regulator. This change
is necessary to be able to model this in the CSID resources.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Reviewed-by: Robert Foss <robert.foss@linaro.org>
Tested-by: Julian Grahsl <jgrahsl@snap.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
| -rw-r--r-- | drivers/media/platform/qcom/camss/camss-csid.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c index a1637b78568b..1226913c623b 100644 --- a/drivers/media/platform/qcom/camss/camss-csid.c +++ b/drivers/media/platform/qcom/camss/camss-csid.c @@ -160,7 +160,7 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) if (ret < 0) return ret; - ret = regulator_enable(csid->vdda); + ret = csid->vdda ? regulator_enable(csid->vdda) : 0; if (ret < 0) { pm_runtime_put_sync(dev); return ret; @@ -168,14 +168,16 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) ret = csid_set_clock_rates(csid); if (ret < 0) { - regulator_disable(csid->vdda); + if (csid->vdda) + regulator_disable(csid->vdda); pm_runtime_put_sync(dev); return ret; } ret = camss_enable_clocks(csid->nclocks, csid->clock, dev); if (ret < 0) { - regulator_disable(csid->vdda); + if (csid->vdda) + regulator_disable(csid->vdda); pm_runtime_put_sync(dev); return ret; } @@ -186,7 +188,8 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) if (ret < 0) { disable_irq(csid->irq); camss_disable_clocks(csid->nclocks, csid->clock); - regulator_disable(csid->vdda); + if (csid->vdda) + regulator_disable(csid->vdda); pm_runtime_put_sync(dev); return ret; } @@ -195,7 +198,7 @@ static int csid_set_power(struct v4l2_subdev *sd, int on) } else { disable_irq(csid->irq); camss_disable_clocks(csid->nclocks, csid->clock); - ret = regulator_disable(csid->vdda); + ret = csid->vdda ? regulator_disable(csid->vdda) : 0; pm_runtime_put_sync(dev); } @@ -631,7 +634,9 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid, /* Regulator */ - csid->vdda = devm_regulator_get(dev, res->regulator[0]); + csid->vdda = NULL; + if (res->regulator[0]) + csid->vdda = devm_regulator_get(dev, res->regulator[0]); if (IS_ERR(csid->vdda)) { dev_err(dev, "could not get regulator\n"); return PTR_ERR(csid->vdda); |