[v21,RESEND,3/4] i2c: mediatek: mt65xx: add optional vbus-supply

Message ID 20210527075556.1709140-4-hsinyi@chromium.org
State Accepted
Commit 9029b9b2ae1355366530e43890fd6aa5db39e91e
Headers show
Series
  • [v21,RESEND,1/4] i2c: core: support bus regulator controlling in adapter
Related show

Commit Message

Hsin-Yi Wang May 27, 2021, 7:55 a.m.
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>
Reviewed-by: Qii Wang <qii.wang@mediatek.com>
---
 drivers/i2c/busses/i2c-mt65xx.c | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Wolfram Sang May 28, 2021, 7:07 p.m. | #1
On Thu, May 27, 2021 at 03:55:55PM +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: Matthias Brugger <matthias.bgg@gmail.com>

> Reviewed-by: Qii Wang <qii.wang@mediatek.com>


Applied to for-next, thanks!

Patch

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)