| Message ID | 20210507131406.2224177-4-hsinyi@chromium.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | add power control in i2c | expand |
On 07/05/2021 15:14, Hsin-Yi Wang wrote: > Add vbus-supply which provides power to SCL/SDA. Pass this regulator > into core so it can be turned on/off for low power mode support. > > Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> > --- > drivers/i2c/busses/i2c-mt65xx.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c > index 5ddfa4e56ee2..22d1d14b5de5 100644 > --- a/drivers/i2c/busses/i2c-mt65xx.c > +++ b/drivers/i2c/busses/i2c-mt65xx.c > @@ -1220,6 +1220,13 @@ static int mtk_i2c_probe(struct platform_device *pdev) > i2c->adap.quirks = i2c->dev_comp->quirks; > i2c->adap.timeout = 2 * HZ; > i2c->adap.retries = 1; > + i2c->adap.bus_regulator = devm_regulator_get_optional(&pdev->dev, "vbus"); > + if (IS_ERR(i2c->adap.bus_regulator)) { > + if (PTR_ERR(i2c->adap.bus_regulator) == -ENODEV) > + i2c->adap.bus_regulator = NULL; > + else > + return PTR_ERR(i2c->adap.bus_regulator); > + } > > ret = mtk_i2c_parse_dt(pdev->dev.of_node, i2c); > if (ret) >
On Fri, 2021-05-07 at 21:14 +0800, Hsin-Yi Wang wrote: > Add vbus-supply which provides power to SCL/SDA. Pass this regulator > into core so it can be turned on/off for low power mode support. > > Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> Reviewed-by: Qii Wang <qii.wang@mediatek.com> > --- > drivers/i2c/busses/i2c-mt65xx.c | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c > index 5ddfa4e56ee2..22d1d14b5de5 100644 > --- a/drivers/i2c/busses/i2c-mt65xx.c > +++ b/drivers/i2c/busses/i2c-mt65xx.c > @@ -1220,6 +1220,13 @@ static int mtk_i2c_probe(struct platform_device *pdev) > i2c->adap.quirks = i2c->dev_comp->quirks; > i2c->adap.timeout = 2 * HZ; > i2c->adap.retries = 1; > + i2c->adap.bus_regulator = devm_regulator_get_optional(&pdev->dev, "vbus"); > + if (IS_ERR(i2c->adap.bus_regulator)) { > + if (PTR_ERR(i2c->adap.bus_regulator) == -ENODEV) > + i2c->adap.bus_regulator = NULL; > + else > + return PTR_ERR(i2c->adap.bus_regulator); > + } > > ret = mtk_i2c_parse_dt(pdev->dev.of_node, i2c); > if (ret)
diff --git a/drivers/i2c/busses/i2c-mt65xx.c b/drivers/i2c/busses/i2c-mt65xx.c index 5ddfa4e56ee2..22d1d14b5de5 100644 --- a/drivers/i2c/busses/i2c-mt65xx.c +++ b/drivers/i2c/busses/i2c-mt65xx.c @@ -1220,6 +1220,13 @@ static int mtk_i2c_probe(struct platform_device *pdev) i2c->adap.quirks = i2c->dev_comp->quirks; i2c->adap.timeout = 2 * HZ; i2c->adap.retries = 1; + i2c->adap.bus_regulator = devm_regulator_get_optional(&pdev->dev, "vbus"); + if (IS_ERR(i2c->adap.bus_regulator)) { + if (PTR_ERR(i2c->adap.bus_regulator) == -ENODEV) + i2c->adap.bus_regulator = NULL; + else + return PTR_ERR(i2c->adap.bus_regulator); + } ret = mtk_i2c_parse_dt(pdev->dev.of_node, i2c); if (ret)
Add vbus-supply which provides power to SCL/SDA. Pass this regulator into core so it can be turned on/off for low power mode support. Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org> --- drivers/i2c/busses/i2c-mt65xx.c | 7 +++++++ 1 file changed, 7 insertions(+)