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usb: typec: tcpm: add vbus regulator ctrl for et7303

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This adds optional vbus control for et7303 Type-C controller.

Signed-off-by: Wang Jie <dave.wang@rock-chips.com>
Change-Id: I7cd324f994962f212ff01dbd2b6073753151bfa9
This commit is contained in:
Wang Jie
2022-03-11 15:52:38 +08:00
committed by Tao Huang
parent 35fc84096e
commit 1c71e396cf
1 changed files with 40 additions and 0 deletions
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40
drivers/usb/typec/tcpm/tcpci_et7303.c
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@@ -13,6 +13,7 @@
#include <linux/gpio/consumer.h>
#include <linux/usb/tcpm.h>
#include <linux/regmap.h>
#include <linux/regulator/consumer.h>
#include "tcpci.h"
#define ET7303_VID 0x6DCF
@@ -31,6 +32,8 @@ struct et7303_chip {
struct tcpci_data data;
struct tcpci *tcpci;
struct device *dev;
struct regulator *vbus;
bool vbus_on;
};
static int et7303_read16(struct et7303_chip *chip, unsigned int reg, u16 *val)
@@ -85,6 +88,33 @@ static int et7303_init(struct tcpci *tcpci, struct tcpci_data *tdata)
return ret;
}
static int et7303_set_vbus(struct tcpci *tcpci, struct tcpci_data *tdata,
bool on, bool charge)
{
struct et7303_chip *chip = tdata_to_et7303(tdata);
int ret = 0;
if (chip->vbus_on == on) {
dev_dbg(chip->dev, "vbus is already %s", on ? "On" : "Off");
goto done;
}
if (on)
ret = regulator_enable(chip->vbus);
else
ret = regulator_disable(chip->vbus);
if (ret < 0) {
dev_err(chip->dev, "cannot %s vbus regulator, ret=%d",
on ? "enable" : "disable", ret);
goto done;
}
chip->vbus_on = on;
done:
return ret;
}
static int et7303_set_vconn(struct tcpci *tcpci, struct tcpci_data *tdata,
bool enable)
{
@@ -222,6 +252,14 @@ static int et7303_probe(struct i2c_client *client,
chip->dev = &client->dev;
i2c_set_clientdata(client, chip);
chip->vbus = devm_regulator_get_optional(chip->dev, "vbus");
if (IS_ERR(chip->vbus)) {
ret = PTR_ERR(chip->vbus);
chip->vbus = NULL;
if (ret != -ENODEV)
return ret;
}
ret = et7303_sw_reset(chip);
if (ret < 0)
return ret;
@@ -231,6 +269,8 @@ static int et7303_probe(struct i2c_client *client,
if (ret < 0)
return ret;
if (chip->vbus)
chip->data.set_vbus = et7303_set_vbus;
chip->data.init = et7303_init;
chip->data.set_vconn = et7303_set_vconn;
chip->data.start_drp_toggling = et7303_start_drp_toggling;