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phy: rockchip: inno-usb2: Support GPIO ID detect for USB2PHY

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This patch register gpio id notifier to support USB2PHY to get extcon
message from extcon-usb-gpio.c driver. The extcon-gpio-usb.c driver
returns the state based on the ID and Vbus pin values as shown below.

      State              |    ID   |   VBUS
     ----------------------------------------
      [1] USB            |    H    |    H
      [2] none           |    H    |    L
      [3] USB-HOST       |    L    |    H
      [4] USB-HOST       |    L    |    L

There is no need to control usb bvalid when USB_HOST state is true.
When USB_HOST state is true, we need to configure the iddig related
registers to trigger the controller's ID interrupt and set the
controller to HOST mode. When USB_HOST state is false, we need to
restore the register configuration.

Change-Id: Ia17fa67f5a26b2e5d989ede23ee6243cdc52f05f
Signed-off-by: Jianwei Zheng <jianwei.zheng@rock-chips.com>
Signed-off-by: William Wu <william.wu@rock-chips.com>
This commit is contained in:
Jianwei Zheng
2024-07-05 16:28:14 +08:00
committed by Tao Huang
parent 66cce2b659
commit 0f69a9b1be
1 changed files with 79 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

97
drivers/phy/rockchip/phy-rockchip-inno-usb2.c
View File

@@ -248,6 +248,7 @@ struct rockchip_usb2phy_cfg {
* @suspended: phy suspended flag.
* @typec_vbus_det: Type-C otg vbus detect.
* @gpio_vbus_det: gpio otg vbus detect.
* @gpio_id_det: gpio otg id detect.
* @utmi_avalid: utmi avalid status usage flag.
* true - use avalid to get vbus status
* false - use bvalid to get vbus status
@@ -271,7 +272,8 @@ struct rockchip_usb2phy_cfg {
* @sw: orientation switch, communicate with TCPM (Type-C Port Manager).
* @port_cfg: port register configuration, assigned by driver data.
* @event_nb: hold event notification callback.
* @gpio_extcon_nb: hold extcon usb gpio notification callback.
* @gpio_vbus_nb: hold extcon usb gpio vbus notification callback.
* @gpio_id_nb: hold extcon usb gpio id notification callback.
* @state: define OTG enumeration states before device reset.
* @mode: the dr_mode of the controller.
*/
@@ -285,6 +287,7 @@ struct rockchip_usb2phy_port {
bool suspended;
bool typec_vbus_det;
bool gpio_vbus_det;
bool gpio_id_det;
bool utmi_avalid;
bool vbus_attached;
bool vbus_always_on;
@@ -305,7 +308,8 @@ struct rockchip_usb2phy_port {
struct typec_switch_dev *sw;
const struct rockchip_usb2phy_port_cfg *port_cfg;
struct notifier_block event_nb;
struct notifier_block gpio_extcon_nb;
struct notifier_block gpio_vbus_nb;
struct notifier_block gpio_id_nb;
struct wake_lock wakelock;
enum usb_otg_state state;
enum usb_dr_mode mode;
@@ -2060,30 +2064,84 @@ static void rockchip_usb2phy_usb_bvalid_enable(struct rockchip_usb2phy_port *rpo
property_enable(rphy->grf, &cfg->bvalid_grf_con, enable);
}
static int rockchip_usb2phy_gpio_extcon_notifier(struct notifier_block *nb,
unsigned long event, void *ptr)
static int rockchip_usb2phy_gpio_vbus_notifier(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct rockchip_usb2phy_port *rport =
container_of(nb, struct rockchip_usb2phy_port, gpio_extcon_nb);
container_of(nb, struct rockchip_usb2phy_port, gpio_vbus_nb);
struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
/* no need to control bvalid if USB_HOST state is true */
if (extcon_get_state(rphy->edev, EXTCON_USB_HOST) > 0)
return NOTIFY_DONE;
rockchip_usb2phy_usb_bvalid_enable(rport,
extcon_get_state(rphy->edev, EXTCON_USB));
return NOTIFY_DONE;
}
static int rockchip_usb2phy_gpio_id_notifier(struct notifier_block *nb,
unsigned long event, void *ptr)
{
struct rockchip_usb2phy_port *rport =
container_of(nb, struct rockchip_usb2phy_port, gpio_id_nb);
struct rockchip_usb2phy *rphy = dev_get_drvdata(rport->phy->dev.parent);
struct regmap *base = get_reg_base(rphy);
int state = extcon_get_state(rphy->edev, EXTCON_USB_HOST);
bool iddig_output = property_enabled(base, &rport->port_cfg->iddig_output);
bool iddig_en = property_enabled(base, &rport->port_cfg->iddig_en);
if (state < 0)
state = 0;
dev_dbg(rphy->dev, "gpio id extcon state: %d\n", state);
if (iddig_en && ((state && !iddig_output) || (!state && iddig_output)))
goto out;
if (state) {
rockchip_usb2phy_set_mode(rport->phy, PHY_MODE_USB_HOST, 0);
property_enable(base, &rport->port_cfg->iddig_output, false);
property_enable(base, &rport->port_cfg->iddig_en, true);
} else {
rockchip_usb2phy_set_mode(rport->phy, PHY_MODE_USB_DEVICE, 0);
property_enable(base, &rport->port_cfg->iddig_output, true);
property_enable(base, &rport->port_cfg->iddig_en, true);
}
out:
return NOTIFY_DONE;
}
static int rockchip_usb2phy_gpio_extcon_register_notifier(struct rockchip_usb2phy *rphy)
{
struct rockchip_usb2phy_port *rport = &rphy->ports[USB2PHY_PORT_OTG];
struct extcon_dev *edev = rphy->edev;
struct regmap *base = get_reg_base(rphy);
int ret;
rport->gpio_extcon_nb.notifier_call = rockchip_usb2phy_gpio_extcon_notifier;
ret = devm_extcon_register_notifier(rphy->dev, edev, EXTCON_USB,
&rport->gpio_extcon_nb);
if (ret)
return ret;
if (rport->gpio_vbus_det) {
rport->gpio_vbus_nb.notifier_call = rockchip_usb2phy_gpio_vbus_notifier;
ret = devm_extcon_register_notifier(rphy->dev, edev, EXTCON_USB,
&rport->gpio_vbus_nb);
if (ret)
return ret;
}
if (rport->gpio_id_det) {
rport->gpio_id_nb.notifier_call = rockchip_usb2phy_gpio_id_notifier;
ret = devm_extcon_register_notifier(rphy->dev, edev, EXTCON_USB_HOST,
&rport->gpio_id_nb);
if (ret)
return ret;
if (extcon_get_state(rphy->edev, EXTCON_USB_HOST) > 0) {
rockchip_usb2phy_set_mode(rport->phy, PHY_MODE_USB_HOST, 0);
property_enable(base, &rport->port_cfg->iddig_output, false);
property_enable(base, &rport->port_cfg->iddig_en, true);
}
}
return 0;
}
@@ -2221,6 +2279,9 @@ static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy,
rport->gpio_vbus_det =
of_property_read_bool(child_np, "rockchip,gpio-vbus-det");
rport->gpio_id_det =
of_property_read_bool(child_np, "rockchip,gpio-id-det");
rport->sel_pipe_phystatus =
of_property_read_bool(child_np, "rockchip,sel-pipe-phystatus");
@@ -2234,14 +2295,6 @@ static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy,
}
}
if (rport->gpio_vbus_det) {
ret = rockchip_usb2phy_gpio_extcon_register_notifier(rphy);
if (ret) {
dev_err(rphy->dev, "failed to register gpio extcon notifier\n");
return ret;
}
}
/* Get Vbus regulators */
rport->vbus = devm_regulator_get_optional(&rport->phy->dev, "vbus");
if (IS_ERR(rport->vbus)) {
@@ -2254,6 +2307,14 @@ static int rockchip_usb2phy_otg_port_init(struct rockchip_usb2phy *rphy,
rport->vbus = NULL;
}
if (rport->gpio_vbus_det || rport->gpio_id_det) {
ret = rockchip_usb2phy_gpio_extcon_register_notifier(rphy);
if (ret) {
dev_err(rphy->dev, "failed to register gpio extcon notifier\n");
return ret;
}
}
rport->mode = of_usb_get_dr_mode_by_phy(child_np, -1);
iddig = property_enabled(rphy->grf, &rport->port_cfg->utmi_iddig);
if (rphy->edev_self && (rport->mode == USB_DR_MODE_HOST ||