From: Maksim Kiselev bigunclemax@gmail.com
Add support for VBUS supply regulator.
When our type-c port acts as a host(SRC), this regulator used for control VBUS supply.
Signed-off-by: Maksim Kiselev bigunclemax@gmail.com --- drivers/usb/tcpm/fusb302.c | 44 +++++++++++++++++++++++++++++++++++++- 1 file changed, 43 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/tcpm/fusb302.c b/drivers/usb/tcpm/fusb302.c index ee283782792..2a258d6429b 100644 --- a/drivers/usb/tcpm/fusb302.c +++ b/drivers/usb/tcpm/fusb302.c @@ -10,6 +10,7 @@ #include <asm/gpio.h> #include <linux/delay.h> #include <linux/err.h> +#include <power/regulator.h> #include <dm/device_compat.h> #include <usb/tcpm.h> #include "fusb302_reg.h" @@ -50,10 +51,13 @@ struct fusb302_chip {
/* port status */ bool vconn_on; + bool vbus_on; bool vbus_present; enum typec_cc_polarity cc_polarity; enum typec_cc_status cc1; enum typec_cc_status cc2; + + struct udevice *vbus; };
static int fusb302_i2c_write(struct udevice *dev, u8 address, u8 data) @@ -506,7 +510,28 @@ done:
static int fusb302_set_vbus(struct udevice *dev, bool on, bool charge) { - return 0; + struct fusb302_chip *chip = dev_get_priv(dev); + int ret = 0; + + if (chip->vbus_on == on) { + dev_dbg(dev, "vbus is already %s\n", on ? "On" : "Off"); + } else { + if (CONFIG_IS_ENABLED(DM_REGULATOR) && chip->vbus) { + if (on) + ret = regulator_set_enable(chip->vbus, true); + else + ret = regulator_set_enable(chip->vbus, false); + if (ret < 0) { + dev_dbg(dev, "cannot %s vbus regulator, ret=%d\n", + on ? "enable" : "disable", ret); + return ret; + } + } + chip->vbus_on = on; + dev_dbg(dev, "vbus := %s\n", on ? "On" : "Off"); + } + + return ret; }
static int fusb302_pd_tx_flush(struct udevice *dev) @@ -1293,6 +1318,22 @@ static int fusb302_get_connector_node(struct udevice *dev, ofnode *connector_nod return 0; }
+static int fusb302_probe(struct udevice *dev) +{ + struct fusb302_chip *chip = dev_get_priv(dev); + int ret; + + if (CONFIG_IS_ENABLED(DM_REGULATOR)) { + ret = device_get_supply_regulator(dev, "vbus-supply", &chip->vbus); + if (ret && ret != -ENOENT) { + dev_err(dev, "Failed to get vbus-supply regulator\n"); + return ret; + } + } + + return 0; +} + static struct dm_tcpm_ops fusb302_ops = { .get_connector_node = fusb302_get_connector_node, .init = fusb302_init, @@ -1320,4 +1361,5 @@ U_BOOT_DRIVER(fusb302) = { .of_match = fusb302_ids, .ops = &fusb302_ops, .priv_auto = sizeof(struct fusb302_chip), + .probe = fusb302_probe, };