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usb: tegra: Changes for v5.7-rc1

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These changes add USB OTG support for the XUSB host and XUSB device
 controllers found on NVIDIA Tegra SoCs.
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Merge tag 'tegra-for-5.7-usb-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into usb-next

Thierry writes:

usb: tegra: Changes for v5.7-rc1

These changes add USB OTG support for the XUSB host and XUSB device
controllers found on NVIDIA Tegra SoCs.

* tag 'tegra-for-5.7-usb-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  usb: gadget: tegra-xudc: Support multiple device modes
  usb: gadget: tegra-xudc: Use phy_set_mode() to set/unset device mode
  usb: gadget: tegra-xudc: Add usb-phy support
  usb: gadget: tegra-xudc: Remove usb-role-switch support
  usb: xhci-tegra: Add OTG support
  phy: tegra: Select USB_PHY
  phy: tegra: Don't use device-managed API to allocate ports
  phy: tegra: Fix regulator leak
  phy: tegra: Print -EPROBE_DEFER error message at debug level
  phy: tegra: xusb: Don't warn on probe defer
  phy: tegra: xusb: Add Tegra194 support
  phy: tegra: xusb: Protect Tegra186 soc with config
  phy: tegra: xusb: Add set_mode support for UTMI phy on Tegra186
  phy: tegra: xusb: Add set_mode support for USB 2 phy on Tegra210
  phy: tegra: xusb: Add support to get companion USB 3 port
  phy: tegra: xusb: Add usb-phy support
  phy: tegra: xusb: Add usb-role-switch support
This commit is contained in:
Greg Kroah-Hartman 2020-03-19 16:01:00 +01:00
commit f62c193067
11 changed files with 1025 additions and 181 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/phy/tegra/Kconfig
View File

@ -2,6 +2,8 @@
config PHY_TEGRA_XUSB
tristate "NVIDIA Tegra XUSB pad controller driver"
depends on ARCH_TEGRA
select USB_CONN_GPIO
select USB_PHY
help
Choose this option if you have an NVIDIA Tegra SoC.

1
drivers/phy/tegra/Makefile
View File

@ -6,4 +6,5 @@ phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_124_SOC) += xusb-tegra124.o
phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_132_SOC) += xusb-tegra124.o
phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_210_SOC) += xusb-tegra210.o
phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_186_SOC) += xusb-tegra186.o
phy-tegra-xusb-$(CONFIG_ARCH_TEGRA_194_SOC) += xusb-tegra186.o
obj-$(CONFIG_PHY_TEGRA194_P2U) += phy-tegra194-p2u.o

6
drivers/phy/tegra/xusb-tegra124.c
View File

@ -1422,6 +1422,8 @@ tegra124_usb2_port_map(struct tegra_xusb_port *port)
}
static const struct tegra_xusb_port_ops tegra124_usb2_port_ops = {
.release = tegra_xusb_usb2_port_release,
.remove = tegra_xusb_usb2_port_remove,
.enable = tegra124_usb2_port_enable,
.disable = tegra124_usb2_port_disable,
.map = tegra124_usb2_port_map,
@ -1443,6 +1445,7 @@ tegra124_ulpi_port_map(struct tegra_xusb_port *port)
}
static const struct tegra_xusb_port_ops tegra124_ulpi_port_ops = {
.release = tegra_xusb_ulpi_port_release,
.enable = tegra124_ulpi_port_enable,
.disable = tegra124_ulpi_port_disable,
.map = tegra124_ulpi_port_map,
@ -1464,6 +1467,7 @@ tegra124_hsic_port_map(struct tegra_xusb_port *port)
}
static const struct tegra_xusb_port_ops tegra124_hsic_port_ops = {
.release = tegra_xusb_hsic_port_release,
.enable = tegra124_hsic_port_enable,
.disable = tegra124_hsic_port_disable,
.map = tegra124_hsic_port_map,
@ -1647,6 +1651,8 @@ tegra124_usb3_port_map(struct tegra_xusb_port *port)
}
static const struct tegra_xusb_port_ops tegra124_usb3_port_ops = {
.release = tegra_xusb_usb3_port_release,
.remove = tegra_xusb_usb3_port_remove,
.enable = tegra124_usb3_port_enable,
.disable = tegra124_usb3_port_disable,
.map = tegra124_usb3_port_map,

265
drivers/phy/tegra/xusb-tegra186.c
View File

@ -63,6 +63,10 @@
#define SSPX_ELPG_CLAMP_EN(x) BIT(0 + (x) * 3)
#define SSPX_ELPG_CLAMP_EN_EARLY(x) BIT(1 + (x) * 3)
#define SSPX_ELPG_VCORE_DOWN(x) BIT(2 + (x) * 3)
#define XUSB_PADCTL_SS_PORT_CFG 0x2c
#define PORTX_SPEED_SUPPORT_SHIFT(x) ((x) * 4)
#define PORTX_SPEED_SUPPORT_MASK (0x3)
#define PORT_SPEED_SUPPORT_GEN1 (0x0)
#define XUSB_PADCTL_USB2_OTG_PADX_CTL0(x) (0x88 + (x) * 0x40)
#define HS_CURR_LEVEL(x) ((x) & 0x3f)
@ -301,6 +305,97 @@ static void tegra_phy_xusb_utmi_pad_power_down(struct phy *phy)
tegra186_utmi_bias_pad_power_off(padctl);
}
static int tegra186_xusb_padctl_vbus_override(struct tegra_xusb_padctl *padctl,
bool status)
{
u32 value;
dev_dbg(padctl->dev, "%s vbus override\n", status ? "set" : "clear");
value = padctl_readl(padctl, USB2_VBUS_ID);
if (status) {
value |= VBUS_OVERRIDE;
value &= ~ID_OVERRIDE(~0);
value |= ID_OVERRIDE_FLOATING;
} else {
value &= ~VBUS_OVERRIDE;
}
padctl_writel(padctl, value, USB2_VBUS_ID);
return 0;
}
static int tegra186_xusb_padctl_id_override(struct tegra_xusb_padctl *padctl,
bool status)
{
u32 value;
dev_dbg(padctl->dev, "%s id override\n", status ? "set" : "clear");
value = padctl_readl(padctl, USB2_VBUS_ID);
if (status) {
if (value & VBUS_OVERRIDE) {
value &= ~VBUS_OVERRIDE;
padctl_writel(padctl, value, USB2_VBUS_ID);
usleep_range(1000, 2000);
value = padctl_readl(padctl, USB2_VBUS_ID);
}
value &= ~ID_OVERRIDE(~0);
value |= ID_OVERRIDE_GROUNDED;
} else {
value &= ~ID_OVERRIDE(~0);
value |= ID_OVERRIDE_FLOATING;
}
padctl_writel(padctl, value, USB2_VBUS_ID);
return 0;
}
static int tegra186_utmi_phy_set_mode(struct phy *phy, enum phy_mode mode,
int submode)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
struct tegra_xusb_usb2_port *port = tegra_xusb_find_usb2_port(padctl,
lane->index);
int err = 0;
mutex_lock(&padctl->lock);
dev_dbg(&port->base.dev, "%s: mode %d", __func__, mode);
if (mode == PHY_MODE_USB_OTG) {
if (submode == USB_ROLE_HOST) {
tegra186_xusb_padctl_id_override(padctl, true);
err = regulator_enable(port->supply);
} else if (submode == USB_ROLE_DEVICE) {
tegra186_xusb_padctl_vbus_override(padctl, true);
} else if (submode == USB_ROLE_NONE) {
/*
* When port is peripheral only or role transitions to
* USB_ROLE_NONE from USB_ROLE_DEVICE, regulator is not
* enabled.
*/
if (regulator_is_enabled(port->supply))
regulator_disable(port->supply);
tegra186_xusb_padctl_id_override(padctl, false);
tegra186_xusb_padctl_vbus_override(padctl, false);
}
}
mutex_unlock(&padctl->lock);
return err;
}
static int tegra186_utmi_phy_power_on(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
@ -439,6 +534,7 @@ static const struct phy_ops utmi_phy_ops = {
.exit = tegra186_utmi_phy_exit,
.power_on = tegra186_utmi_phy_power_on,
.power_off = tegra186_utmi_phy_power_off,
.set_mode = tegra186_utmi_phy_set_mode,
.owner = THIS_MODULE,
};
@ -503,19 +599,6 @@ static const char * const tegra186_usb2_functions[] = {
"xusb",
};
static const struct tegra_xusb_lane_soc tegra186_usb2_lanes[] = {
TEGRA186_LANE("usb2-0", 0, 0, 0, usb2),
TEGRA186_LANE("usb2-1", 0, 0, 0, usb2),
TEGRA186_LANE("usb2-2", 0, 0, 0, usb2),
};
static const struct tegra_xusb_pad_soc tegra186_usb2_pad = {
.name = "usb2",
.num_lanes = ARRAY_SIZE(tegra186_usb2_lanes),
.lanes = tegra186_usb2_lanes,
.ops = &tegra186_usb2_pad_ops,
};
static int tegra186_usb2_port_enable(struct tegra_xusb_port *port)
{
return 0;
@ -532,6 +615,8 @@ tegra186_usb2_port_map(struct tegra_xusb_port *port)
}
static const struct tegra_xusb_port_ops tegra186_usb2_port_ops = {
.release = tegra_xusb_usb2_port_release,
.remove = tegra_xusb_usb2_port_remove,
.enable = tegra186_usb2_port_enable,
.disable = tegra186_usb2_port_disable,
.map = tegra186_usb2_port_map,
@ -591,6 +676,8 @@ tegra186_usb3_port_map(struct tegra_xusb_port *port)
}
static const struct tegra_xusb_port_ops tegra186_usb3_port_ops = {
.release = tegra_xusb_usb3_port_release,
.remove = tegra_xusb_usb3_port_remove,
.enable = tegra186_usb3_port_enable,
.disable = tegra186_usb3_port_disable,
.map = tegra186_usb3_port_map,
@ -635,6 +722,15 @@ static int tegra186_usb3_phy_power_on(struct phy *phy)
padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_CAP);
if (padctl->soc->supports_gen2 && port->disable_gen2) {
value = padctl_readl(padctl, XUSB_PADCTL_SS_PORT_CFG);
value &= ~(PORTX_SPEED_SUPPORT_MASK <<
PORTX_SPEED_SUPPORT_SHIFT(index));
value |= (PORT_SPEED_SUPPORT_GEN1 <<
PORTX_SPEED_SUPPORT_SHIFT(index));
padctl_writel(padctl, value, XUSB_PADCTL_SS_PORT_CFG);
}
value = padctl_readl(padctl, XUSB_PADCTL_ELPG_PROGRAM_1);
value &= ~SSPX_ELPG_VCORE_DOWN(index);
padctl_writel(padctl, value, XUSB_PADCTL_ELPG_PROGRAM_1);
@ -765,27 +861,6 @@ static const char * const tegra186_usb3_functions[] = {
"xusb",
};
static const struct tegra_xusb_lane_soc tegra186_usb3_lanes[] = {
TEGRA186_LANE("usb3-0", 0, 0, 0, usb3),
TEGRA186_LANE("usb3-1", 0, 0, 0, usb3),
TEGRA186_LANE("usb3-2", 0, 0, 0, usb3),
};
static const struct tegra_xusb_pad_soc tegra186_usb3_pad = {
.name = "usb3",
.num_lanes = ARRAY_SIZE(tegra186_usb3_lanes),
.lanes = tegra186_usb3_lanes,
.ops = &tegra186_usb3_pad_ops,
};
static const struct tegra_xusb_pad_soc * const tegra186_pads[] = {
&tegra186_usb2_pad,
&tegra186_usb3_pad,
#if 0 /* TODO implement */
&tegra186_hsic_pad,
#endif
};
static int
tegra186_xusb_read_fuse_calibration(struct tegra186_xusb_padctl *padctl)
{
@ -802,7 +877,9 @@ tegra186_xusb_read_fuse_calibration(struct tegra186_xusb_padctl *padctl)
err = tegra_fuse_readl(TEGRA_FUSE_SKU_CALIB_0, &value);
if (err) {
dev_err(dev, "failed to read calibration fuse: %d\n", err);
if (err != -EPROBE_DEFER)
dev_err(dev, "failed to read calibration fuse: %d\n",
err);
return err;
}
@ -857,34 +934,13 @@ static void tegra186_xusb_padctl_remove(struct tegra_xusb_padctl *padctl)
{
}
static int tegra186_xusb_padctl_vbus_override(struct tegra_xusb_padctl *padctl,
bool status)
{
u32 value;
dev_dbg(padctl->dev, "%s vbus override\n", status ? "set" : "clear");
value = padctl_readl(padctl, USB2_VBUS_ID);
if (status) {
value |= VBUS_OVERRIDE;
value &= ~ID_OVERRIDE(~0);
value |= ID_OVERRIDE_FLOATING;
} else {
value &= ~VBUS_OVERRIDE;
}
padctl_writel(padctl, value, USB2_VBUS_ID);
return 0;
}
static const struct tegra_xusb_padctl_ops tegra186_xusb_padctl_ops = {
.probe = tegra186_xusb_padctl_probe,
.remove = tegra186_xusb_padctl_remove,
.vbus_override = tegra186_xusb_padctl_vbus_override,
};
#if IS_ENABLED(CONFIG_ARCH_TEGRA_186_SOC)
static const char * const tegra186_xusb_padctl_supply_names[] = {
"avdd-pll-erefeut",
"avdd-usb",
@ -892,6 +948,40 @@ static const char * const tegra186_xusb_padctl_supply_names[] = {
"vddio-hsic",
};
static const struct tegra_xusb_lane_soc tegra186_usb2_lanes[] = {
TEGRA186_LANE("usb2-0", 0, 0, 0, usb2),
TEGRA186_LANE("usb2-1", 0, 0, 0, usb2),
TEGRA186_LANE("usb2-2", 0, 0, 0, usb2),
};
static const struct tegra_xusb_pad_soc tegra186_usb2_pad = {
.name = "usb2",
.num_lanes = ARRAY_SIZE(tegra186_usb2_lanes),
.lanes = tegra186_usb2_lanes,
.ops = &tegra186_usb2_pad_ops,
};
static const struct tegra_xusb_lane_soc tegra186_usb3_lanes[] = {
TEGRA186_LANE("usb3-0", 0, 0, 0, usb3),
TEGRA186_LANE("usb3-1", 0, 0, 0, usb3),
TEGRA186_LANE("usb3-2", 0, 0, 0, usb3),
};
static const struct tegra_xusb_pad_soc tegra186_usb3_pad = {
.name = "usb3",
.num_lanes = ARRAY_SIZE(tegra186_usb3_lanes),
.lanes = tegra186_usb3_lanes,
.ops = &tegra186_usb3_pad_ops,
};
static const struct tegra_xusb_pad_soc * const tegra186_pads[] = {
&tegra186_usb2_pad,
&tegra186_usb3_pad,
#if 0 /* TODO implement */
&tegra186_hsic_pad,
#endif
};
const struct tegra_xusb_padctl_soc tegra186_xusb_padctl_soc = {
.num_pads = ARRAY_SIZE(tegra186_pads),
.pads = tegra186_pads,
@ -916,6 +1006,67 @@ const struct tegra_xusb_padctl_soc tegra186_xusb_padctl_soc = {
.num_supplies = ARRAY_SIZE(tegra186_xusb_padctl_supply_names),
};
EXPORT_SYMBOL_GPL(tegra186_xusb_padctl_soc);
#endif
#if IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC)
static const char * const tegra194_xusb_padctl_supply_names[] = {
"avdd-usb",
"vclamp-usb",
};
static const struct tegra_xusb_lane_soc tegra194_usb2_lanes[] = {
TEGRA186_LANE("usb2-0", 0, 0, 0, usb2),
TEGRA186_LANE("usb2-1", 0, 0, 0, usb2),
TEGRA186_LANE("usb2-2", 0, 0, 0, usb2),
TEGRA186_LANE("usb2-3", 0, 0, 0, usb2),
};
static const struct tegra_xusb_pad_soc tegra194_usb2_pad = {
.name = "usb2",
.num_lanes = ARRAY_SIZE(tegra194_usb2_lanes),
.lanes = tegra194_usb2_lanes,
.ops = &tegra186_usb2_pad_ops,
};
static const struct tegra_xusb_lane_soc tegra194_usb3_lanes[] = {
TEGRA186_LANE("usb3-0", 0, 0, 0, usb3),
TEGRA186_LANE("usb3-1", 0, 0, 0, usb3),
TEGRA186_LANE("usb3-2", 0, 0, 0, usb3),
TEGRA186_LANE("usb3-3", 0, 0, 0, usb3),
};
static const struct tegra_xusb_pad_soc tegra194_usb3_pad = {
.name = "usb3",
.num_lanes = ARRAY_SIZE(tegra194_usb3_lanes),
.lanes = tegra194_usb3_lanes,
.ops = &tegra186_usb3_pad_ops,
};
static const struct tegra_xusb_pad_soc * const tegra194_pads[] = {
&tegra194_usb2_pad,
&tegra194_usb3_pad,
};
const struct tegra_xusb_padctl_soc tegra194_xusb_padctl_soc = {
.num_pads = ARRAY_SIZE(tegra194_pads),
.pads = tegra194_pads,
.ports = {
.usb2 = {
.ops = &tegra186_usb2_port_ops,
.count = 4,
},
.usb3 = {
.ops = &tegra186_usb3_port_ops,
.count = 4,
},
},
.ops = &tegra186_xusb_padctl_ops,
.supply_names = tegra194_xusb_padctl_supply_names,
.num_supplies = ARRAY_SIZE(tegra194_xusb_padctl_supply_names),
.supports_gen2 = true,
};
EXPORT_SYMBOL_GPL(tegra194_xusb_padctl_soc);
#endif
MODULE_AUTHOR("JC Kuo <jckuo@nvidia.com>");
MODULE_DESCRIPTION("NVIDIA Tegra186 XUSB Pad Controller driver");

136
drivers/phy/tegra/xusb-tegra210.c
View File

@ -236,6 +236,7 @@
#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT 18
#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK 0xf
#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_FLOATING 8
#define XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_GROUNDED 0
struct tegra210_xusb_fuse_calibration {
u32 hs_curr_level[4];
@ -935,6 +936,103 @@ static int tegra210_usb2_phy_exit(struct phy *phy)
return tegra210_xusb_padctl_disable(lane->pad->padctl);
}
static int tegra210_xusb_padctl_vbus_override(struct tegra_xusb_padctl *padctl,
bool status)
{
u32 value;
dev_dbg(padctl->dev, "%s vbus override\n", status ? "set" : "clear");
value = padctl_readl(padctl, XUSB_PADCTL_USB2_VBUS_ID);
if (status) {
value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON;
value &= ~(XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK <<
XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT);
value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_FLOATING <<
XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT;
} else {
value &= ~XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON;
}
padctl_writel(padctl, value, XUSB_PADCTL_USB2_VBUS_ID);
return 0;
}
static int tegra210_xusb_padctl_id_override(struct tegra_xusb_padctl *padctl,
bool status)
{
u32 value;
dev_dbg(padctl->dev, "%s id override\n", status ? "set" : "clear");
value = padctl_readl(padctl, XUSB_PADCTL_USB2_VBUS_ID);
if (status) {
if (value & XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON) {
value &= ~XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON;
padctl_writel(padctl, value, XUSB_PADCTL_USB2_VBUS_ID);
usleep_range(1000, 2000);
value = padctl_readl(padctl, XUSB_PADCTL_USB2_VBUS_ID);
}
value &= ~(XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK <<
XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT);
value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_GROUNDED <<
XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT;
} else {
value &= ~(XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK <<
XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT);
value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_FLOATING <<
XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT;
}
padctl_writel(padctl, value, XUSB_PADCTL_USB2_VBUS_ID);
return 0;
}
static int tegra210_usb2_phy_set_mode(struct phy *phy, enum phy_mode mode,
int submode)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
struct tegra_xusb_padctl *padctl = lane->pad->padctl;
struct tegra_xusb_usb2_port *port = tegra_xusb_find_usb2_port(padctl,
lane->index);
int err = 0;
mutex_lock(&padctl->lock);
dev_dbg(&port->base.dev, "%s: mode %d", __func__, mode);
if (mode == PHY_MODE_USB_OTG) {
if (submode == USB_ROLE_HOST) {
tegra210_xusb_padctl_id_override(padctl, true);
err = regulator_enable(port->supply);
} else if (submode == USB_ROLE_DEVICE) {
tegra210_xusb_padctl_vbus_override(padctl, true);
} else if (submode == USB_ROLE_NONE) {
/*
* When port is peripheral only or role transitions to
* USB_ROLE_NONE from USB_ROLE_DEVICE, regulator is not
* be enabled.
*/
if (regulator_is_enabled(port->supply))
regulator_disable(port->supply);
tegra210_xusb_padctl_id_override(padctl, false);
tegra210_xusb_padctl_vbus_override(padctl, false);
}
}
mutex_unlock(&padctl->lock);
return err;
}
static int tegra210_usb2_phy_power_on(struct phy *phy)
{
struct tegra_xusb_lane *lane = phy_get_drvdata(phy);
@ -1048,9 +1146,11 @@ static int tegra210_usb2_phy_power_on(struct phy *phy)
padctl_writel(padctl, value,
XUSB_PADCTL_USB2_BATTERY_CHRG_OTGPADX_CTL1(index));
err = regulator_enable(port->supply);
if (err)
return err;
if (port->supply && port->mode == USB_DR_MODE_HOST) {
err = regulator_enable(port->supply);
if (err)
return err;
}
mutex_lock(&padctl->lock);
@ -1164,6 +1264,7 @@ static const struct phy_ops tegra210_usb2_phy_ops = {
.exit = tegra210_usb2_phy_exit,
.power_on = tegra210_usb2_phy_power_on,
.power_off = tegra210_usb2_phy_power_off,
.set_mode = tegra210_usb2_phy_set_mode,
.owner = THIS_MODULE,
};
@ -1852,6 +1953,8 @@ tegra210_usb2_port_map(struct tegra_xusb_port *port)
}
static const struct tegra_xusb_port_ops tegra210_usb2_port_ops = {
.release = tegra_xusb_usb2_port_release,
.remove = tegra_xusb_usb2_port_remove,
.enable = tegra210_usb2_port_enable,
.disable = tegra210_usb2_port_disable,
.map = tegra210_usb2_port_map,
@ -1873,6 +1976,7 @@ tegra210_hsic_port_map(struct tegra_xusb_port *port)
}
static const struct tegra_xusb_port_ops tegra210_hsic_port_ops = {
.release = tegra_xusb_hsic_port_release,
.enable = tegra210_hsic_port_enable,
.disable = tegra210_hsic_port_disable,
.map = tegra210_hsic_port_map,
@ -2018,35 +2122,13 @@ tegra210_usb3_port_map(struct tegra_xusb_port *port)
}
static const struct tegra_xusb_port_ops tegra210_usb3_port_ops = {
.release = tegra_xusb_usb3_port_release,
.remove = tegra_xusb_usb3_port_remove,
.enable = tegra210_usb3_port_enable,
.disable = tegra210_usb3_port_disable,
.map = tegra210_usb3_port_map,
};
static int tegra210_xusb_padctl_vbus_override(struct tegra_xusb_padctl *padctl,
bool status)
{
u32 value;
dev_dbg(padctl->dev, "%s vbus override\n", status ? "set" : "clear");
value = padctl_readl(padctl, XUSB_PADCTL_USB2_VBUS_ID);
if (status) {
value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON;
value &= ~(XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_MASK <<
XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT);
value |= XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_FLOATING <<
XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_SHIFT;
} else {
value &= ~XUSB_PADCTL_USB2_VBUS_ID_OVERRIDE_VBUS_ON;
}
padctl_writel(padctl, value, XUSB_PADCTL_USB2_VBUS_ID);
return 0;
}
static int tegra210_utmi_port_reset(struct phy *phy)
{
struct tegra_xusb_padctl *padctl;

263
drivers/phy/tegra/xusb.c
View File

@ -65,6 +65,12 @@ static const struct of_device_id tegra_xusb_padctl_of_match[] = {
.compatible = "nvidia,tegra186-xusb-padctl",
.data = &tegra186_xusb_padctl_soc,
},
#endif
#if defined(CONFIG_ARCH_TEGRA_194_SOC)
{
.compatible = "nvidia,tegra194-xusb-padctl",
.data = &tegra194_xusb_padctl_soc,
},
#endif
{ }
};
@ -501,6 +507,10 @@ tegra_xusb_find_usb3_port(struct tegra_xusb_padctl *padctl, unsigned int index)
static void tegra_xusb_port_release(struct device *dev)
{
struct tegra_xusb_port *port = to_tegra_xusb_port(dev);
if (port->ops->release)
port->ops->release(port);
}
static struct device_type tegra_xusb_port_type = {
@ -541,6 +551,16 @@ unregister:
static void tegra_xusb_port_unregister(struct tegra_xusb_port *port)
{
if (!IS_ERR_OR_NULL(port->usb_role_sw)) {
of_platform_depopulate(&port->dev);
usb_role_switch_unregister(port->usb_role_sw);
cancel_work_sync(&port->usb_phy_work);
usb_remove_phy(&port->usb_phy);
}
if (port->ops->remove)
port->ops->remove(port);
device_unregister(&port->dev);
}
@ -551,11 +571,146 @@ static const char *const modes[] = {
[USB_DR_MODE_OTG] = "otg",
};
static const char * const usb_roles[] = {
[USB_ROLE_NONE] = "none",
[USB_ROLE_HOST] = "host",
[USB_ROLE_DEVICE] = "device",
};
static enum usb_phy_events to_usb_phy_event(enum usb_role role)
{
switch (role) {
case USB_ROLE_DEVICE:
return USB_EVENT_VBUS;
case USB_ROLE_HOST:
return USB_EVENT_ID;
default:
return USB_EVENT_NONE;
}
}
static void tegra_xusb_usb_phy_work(struct work_struct *work)
{
struct tegra_xusb_port *port = container_of(work,
struct tegra_xusb_port,
usb_phy_work);
enum usb_role role = usb_role_switch_get_role(port->usb_role_sw);
usb_phy_set_event(&port->usb_phy, to_usb_phy_event(role));
dev_dbg(&port->dev, "%s(): calling notifier for role %s\n", __func__,
usb_roles[role]);
atomic_notifier_call_chain(&port->usb_phy.notifier, 0, &port->usb_phy);
}
static int tegra_xusb_role_sw_set(struct usb_role_switch *sw,
enum usb_role role)
{
struct tegra_xusb_port *port = usb_role_switch_get_drvdata(sw);
dev_dbg(&port->dev, "%s(): role %s\n", __func__, usb_roles[role]);
schedule_work(&port->usb_phy_work);
return 0;
}
static int tegra_xusb_set_peripheral(struct usb_otg *otg,
struct usb_gadget *gadget)
{
struct tegra_xusb_port *port = container_of(otg->usb_phy,
struct tegra_xusb_port,
usb_phy);
if (gadget != NULL)
schedule_work(&port->usb_phy_work);
return 0;
}
static int tegra_xusb_set_host(struct usb_otg *otg, struct usb_bus *host)
{
struct tegra_xusb_port *port = container_of(otg->usb_phy,
struct tegra_xusb_port,
usb_phy);
if (host != NULL)
schedule_work(&port->usb_phy_work);
return 0;
}
static int tegra_xusb_setup_usb_role_switch(struct tegra_xusb_port *port)
{
struct tegra_xusb_lane *lane;
struct usb_role_switch_desc role_sx_desc = {
.fwnode = dev_fwnode(&port->dev),
.set = tegra_xusb_role_sw_set,
};
int err = 0;
/*
* USB role switch driver needs parent driver owner info. This is a
* suboptimal solution. TODO: Need to revisit this in a follow-up patch
* where an optimal solution is possible with changes to USB role
* switch driver.
*/
port->dev.driver = devm_kzalloc(&port->dev,
sizeof(struct device_driver),
GFP_KERNEL);
port->dev.driver->owner = THIS_MODULE;
port->usb_role_sw = usb_role_switch_register(&port->dev,
&role_sx_desc);
if (IS_ERR(port->usb_role_sw)) {
err = PTR_ERR(port->usb_role_sw);
dev_err(&port->dev, "failed to register USB role switch: %d",
err);
return err;
}
INIT_WORK(&port->usb_phy_work, tegra_xusb_usb_phy_work);
usb_role_switch_set_drvdata(port->usb_role_sw, port);
port->usb_phy.otg = devm_kzalloc(&port->dev, sizeof(struct usb_otg),
GFP_KERNEL);
if (!port->usb_phy.otg)
return -ENOMEM;
lane = tegra_xusb_find_lane(port->padctl, "usb2", port->index);
/*
* Assign phy dev to usb-phy dev. Host/device drivers can use phy
* reference to retrieve usb-phy details.
*/
port->usb_phy.dev = &lane->pad->lanes[port->index]->dev;
port->usb_phy.dev->driver = port->padctl->dev->driver;
port->usb_phy.otg->usb_phy = &port->usb_phy;
port->usb_phy.otg->set_peripheral = tegra_xusb_set_peripheral;
port->usb_phy.otg->set_host = tegra_xusb_set_host;
err = usb_add_phy_dev(&port->usb_phy);
if (err < 0) {
dev_err(&port->dev, "Failed to add USB PHY: %d\n", err);
return err;
}
/* populate connector entry */
of_platform_populate(port->dev.of_node, NULL, NULL, &port->dev);
return err;
}
static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2)
{
struct tegra_xusb_port *port = &usb2->base;
struct device_node *np = port->dev.of_node;
const char *mode;
int err;
usb2->internal = of_property_read_bool(np, "nvidia,internal");
@ -572,7 +727,21 @@ static int tegra_xusb_usb2_port_parse_dt(struct tegra_xusb_usb2_port *usb2)
usb2->mode = USB_DR_MODE_HOST;
}
usb2->supply = devm_regulator_get(&port->dev, "vbus");
/* usb-role-switch property is mandatory for OTG/Peripheral modes */
if (usb2->mode == USB_DR_MODE_PERIPHERAL ||
usb2->mode == USB_DR_MODE_OTG) {
if (of_property_read_bool(np, "usb-role-switch")) {
err = tegra_xusb_setup_usb_role_switch(port);
if (err < 0)
return err;
} else {
dev_err(&port->dev, "usb-role-switch not found for %s mode",
modes[usb2->mode]);
return -EINVAL;
}
}
usb2->supply = regulator_get(&port->dev, "vbus");
return PTR_ERR_OR_ZERO(usb2->supply);
}
@ -591,7 +760,7 @@ static int tegra_xusb_add_usb2_port(struct tegra_xusb_padctl *padctl,
if (!np || !of_device_is_available(np))
goto out;
usb2 = devm_kzalloc(padctl->dev, sizeof(*usb2), GFP_KERNEL);
usb2 = kzalloc(sizeof(*usb2), GFP_KERNEL);
if (!usb2) {
err = -ENOMEM;
goto out;
@ -622,6 +791,20 @@ out:
return err;
}
void tegra_xusb_usb2_port_release(struct tegra_xusb_port *port)
{
struct tegra_xusb_usb2_port *usb2 = to_usb2_port(port);
kfree(usb2);
}
void tegra_xusb_usb2_port_remove(struct tegra_xusb_port *port)
{
struct tegra_xusb_usb2_port *usb2 = to_usb2_port(port);
regulator_put(usb2->supply);
}
static int tegra_xusb_ulpi_port_parse_dt(struct tegra_xusb_ulpi_port *ulpi)
{
struct tegra_xusb_port *port = &ulpi->base;
@ -643,7 +826,7 @@ static int tegra_xusb_add_ulpi_port(struct tegra_xusb_padctl *padctl,
if (!np || !of_device_is_available(np))
goto out;
ulpi = devm_kzalloc(padctl->dev, sizeof(*ulpi), GFP_KERNEL);
ulpi = kzalloc(sizeof(*ulpi), GFP_KERNEL);
if (!ulpi) {
err = -ENOMEM;
goto out;
@ -674,6 +857,13 @@ out:
return err;
}
void tegra_xusb_ulpi_port_release(struct tegra_xusb_port *port)
{
struct tegra_xusb_ulpi_port *ulpi = to_ulpi_port(port);
kfree(ulpi);
}
static int tegra_xusb_hsic_port_parse_dt(struct tegra_xusb_hsic_port *hsic)
{
/* XXX */
@ -691,7 +881,7 @@ static int tegra_xusb_add_hsic_port(struct tegra_xusb_padctl *padctl,
if (!np || !of_device_is_available(np))
goto out;
hsic = devm_kzalloc(padctl->dev, sizeof(*hsic), GFP_KERNEL);
hsic = kzalloc(sizeof(*hsic), GFP_KERNEL);
if (!hsic) {
err = -ENOMEM;
goto out;
@ -722,10 +912,18 @@ out:
return err;
}
void tegra_xusb_hsic_port_release(struct tegra_xusb_port *port)
{
struct tegra_xusb_hsic_port *hsic = to_hsic_port(port);
kfree(hsic);
}
static int tegra_xusb_usb3_port_parse_dt(struct tegra_xusb_usb3_port *usb3)
{
struct tegra_xusb_port *port = &usb3->base;
struct device_node *np = port->dev.of_node;
enum usb_device_speed maximum_speed;
u32 value;
int err;
@ -739,7 +937,17 @@ static int tegra_xusb_usb3_port_parse_dt(struct tegra_xusb_usb3_port *usb3)
usb3->internal = of_property_read_bool(np, "nvidia,internal");
usb3->supply = devm_regulator_get(&port->dev, "vbus");
if (device_property_present(&port->dev, "maximum-speed")) {
maximum_speed = usb_get_maximum_speed(&port->dev);
if (maximum_speed == USB_SPEED_SUPER)
usb3->disable_gen2 = true;
else if (maximum_speed == USB_SPEED_SUPER_PLUS)
usb3->disable_gen2 = false;
else
return -EINVAL;
}
usb3->supply = regulator_get(&port->dev, "vbus");
return PTR_ERR_OR_ZERO(usb3->supply);
}
@ -759,7 +967,7 @@ static int tegra_xusb_add_usb3_port(struct tegra_xusb_padctl *padctl,
if (!np || !of_device_is_available(np))
goto out;
usb3 = devm_kzalloc(padctl->dev, sizeof(*usb3), GFP_KERNEL);
usb3 = kzalloc(sizeof(*usb3), GFP_KERNEL);
if (!usb3) {
err = -ENOMEM;
goto out;
@ -790,6 +998,20 @@ out:
return err;
}
void tegra_xusb_usb3_port_release(struct tegra_xusb_port *port)
{
struct tegra_xusb_usb3_port *usb3 = to_usb3_port(port);
kfree(usb3);
}
void tegra_xusb_usb3_port_remove(struct tegra_xusb_port *port)
{
struct tegra_xusb_usb3_port *usb3 = to_usb3_port(port);
regulator_put(usb3->supply);
}
static void __tegra_xusb_remove_ports(struct tegra_xusb_padctl *padctl)
{
struct tegra_xusb_port *port, *tmp;
@ -1001,7 +1223,13 @@ static int tegra_xusb_padctl_probe(struct platform_device *pdev)
err = tegra_xusb_setup_ports(padctl);
if (err) {
dev_err(&pdev->dev, "failed to setup XUSB ports: %d\n", err);
const char *level = KERN_ERR;
if (err == -EPROBE_DEFER)
level = KERN_DEBUG;
dev_printk(level, &pdev->dev,
dev_fmt("failed to setup XUSB ports: %d\n"), err);
goto remove_pads;
}
@ -1143,6 +1371,27 @@ int tegra_phy_xusb_utmi_port_reset(struct phy *phy)
}
EXPORT_SYMBOL_GPL(tegra_phy_xusb_utmi_port_reset);
int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl,
unsigned int port)
{
struct tegra_xusb_usb2_port *usb2;
struct tegra_xusb_usb3_port *usb3;
int i;
usb2 = tegra_xusb_find_usb2_port(padctl, port);
if (!usb2)
return -EINVAL;
for (i = 0; i < padctl->soc->ports.usb3.count; i++) {
usb3 = tegra_xusb_find_usb3_port(padctl, i);
if (usb3 && usb3->port == usb2->base.index)
return usb3->base.index;
}
return -ENODEV;
}
EXPORT_SYMBOL_GPL(tegra_xusb_padctl_get_usb3_companion);
MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
MODULE_DESCRIPTION("Tegra XUSB Pad Controller driver");
MODULE_LICENSE("GPL v2");

25
drivers/phy/tegra/xusb.h
View File

@ -12,6 +12,7 @@
#include <linux/workqueue.h>
#include <linux/usb/otg.h>
#include <linux/usb/role.h>
/* legacy entry points for backwards-compatibility */
int tegra_xusb_padctl_legacy_probe(struct platform_device *pdev);
@ -266,9 +267,18 @@ struct tegra_xusb_port {
struct list_head list;
struct device dev;
struct usb_role_switch *usb_role_sw;
struct work_struct usb_phy_work;
struct usb_phy usb_phy;
const struct tegra_xusb_port_ops *ops;
};
static inline struct tegra_xusb_port *to_tegra_xusb_port(struct device *dev)
{
return container_of(dev, struct tegra_xusb_port, dev);
}
struct tegra_xusb_lane_map {
unsigned int port;
const char *type;
@ -303,6 +313,8 @@ to_usb2_port(struct tegra_xusb_port *port)
struct tegra_xusb_usb2_port *
tegra_xusb_find_usb2_port(struct tegra_xusb_padctl *padctl,
unsigned int index);
void tegra_xusb_usb2_port_release(struct tegra_xusb_port *port);
void tegra_xusb_usb2_port_remove(struct tegra_xusb_port *port);
struct tegra_xusb_ulpi_port {
struct tegra_xusb_port base;
@ -317,6 +329,8 @@ to_ulpi_port(struct tegra_xusb_port *port)
return container_of(port, struct tegra_xusb_ulpi_port, base);
}
void tegra_xusb_ulpi_port_release(struct tegra_xusb_port *port);
struct tegra_xusb_hsic_port {
struct tegra_xusb_port base;
};
@ -327,12 +341,15 @@ to_hsic_port(struct tegra_xusb_port *port)
return container_of(port, struct tegra_xusb_hsic_port, base);
}
void tegra_xusb_hsic_port_release(struct tegra_xusb_port *port);
struct tegra_xusb_usb3_port {
struct tegra_xusb_port base;
struct regulator *supply;
bool context_saved;
unsigned int port;
bool internal;
bool disable_gen2;
u32 tap1;
u32 amp;
@ -349,8 +366,12 @@ to_usb3_port(struct tegra_xusb_port *port)
struct tegra_xusb_usb3_port *
tegra_xusb_find_usb3_port(struct tegra_xusb_padctl *padctl,
unsigned int index);
void tegra_xusb_usb3_port_release(struct tegra_xusb_port *port);
void tegra_xusb_usb3_port_remove(struct tegra_xusb_port *port);
struct tegra_xusb_port_ops {
void (*release)(struct tegra_xusb_port *port);
void (*remove)(struct tegra_xusb_port *port);
int (*enable)(struct tegra_xusb_port *port);
void (*disable)(struct tegra_xusb_port *port);
struct tegra_xusb_lane *(*map)(struct tegra_xusb_port *port);
@ -392,6 +413,7 @@ struct tegra_xusb_padctl_soc {
const char * const *supply_names;
unsigned int num_supplies;
bool supports_gen2;
bool need_fake_usb3_port;
};
@ -448,5 +470,8 @@ extern const struct tegra_xusb_padctl_soc tegra210_xusb_padctl_soc;
#if defined(CONFIG_ARCH_TEGRA_186_SOC)
extern const struct tegra_xusb_padctl_soc tegra186_xusb_padctl_soc;
#endif
#if defined(CONFIG_ARCH_TEGRA_194_SOC)
extern const struct tegra_xusb_padctl_soc tegra194_xusb_padctl_soc;
#endif
#endif /* __PHY_TEGRA_XUSB_H */

1
drivers/usb/gadget/udc/Kconfig
View File

@ -455,7 +455,6 @@ config USB_TEGRA_XUDC
tristate "NVIDIA Tegra Superspeed USB 3.0 Device Controller"
depends on ARCH_TEGRA || COMPILE_TEST
depends on PHY_TEGRA_XUSB
select USB_ROLE_SWITCH
help
Enables NVIDIA Tegra USB 3.0 device mode controller driver.

277
drivers/usb/gadget/udc/tegra-xudc.c
View File

@ -26,7 +26,9 @@
#include <linux/reset.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#include <linux/usb/otg.h>
#include <linux/usb/role.h>
#include <linux/usb/phy.h>
#include <linux/workqueue.h>
/* XUSB_DEV registers */
@ -477,17 +479,21 @@ struct tegra_xudc {
struct clk_bulk_data *clks;
enum usb_role device_mode;
struct usb_role_switch *usb_role_sw;
bool device_mode;
struct work_struct usb_role_sw_work;
struct phy *usb3_phy;
struct phy *utmi_phy;
struct phy **usb3_phy;
struct phy *curr_usb3_phy;
struct phy **utmi_phy;
struct phy *curr_utmi_phy;
struct tegra_xudc_save_regs saved_regs;
bool suspended;
bool powergated;
struct usb_phy **usbphy;
struct notifier_block vbus_nb;
struct completion disconnect_complete;
bool selfpowered;
@ -517,6 +523,7 @@ struct tegra_xudc_soc {
unsigned int num_supplies;
const char * const *clock_names;
unsigned int num_clks;
unsigned int num_phys;
bool u1_enable;
bool u2_enable;
bool lpm_enable;
@ -598,19 +605,18 @@ static void tegra_xudc_device_mode_on(struct tegra_xudc *xudc)
pm_runtime_get_sync(xudc->dev);
err = phy_power_on(xudc->utmi_phy);
err = phy_power_on(xudc->curr_utmi_phy);
if (err < 0)
dev_err(xudc->dev, "utmi power on failed %d\n", err);
err = phy_power_on(xudc->usb3_phy);
err = phy_power_on(xudc->curr_usb3_phy);
if (err < 0)
dev_err(xudc->dev, "usb3 phy power on failed %d\n", err);
dev_dbg(xudc->dev, "device mode on\n");
tegra_xusb_padctl_set_vbus_override(xudc->padctl, true);
xudc->device_mode = USB_ROLE_DEVICE;
phy_set_mode_ext(xudc->curr_utmi_phy, PHY_MODE_USB_OTG,
USB_ROLE_DEVICE);
}
static void tegra_xudc_device_mode_off(struct tegra_xudc *xudc)
@ -625,7 +631,7 @@ static void tegra_xudc_device_mode_off(struct tegra_xudc *xudc)
reinit_completion(&xudc->disconnect_complete);
tegra_xusb_padctl_set_vbus_override(xudc->padctl, false);
phy_set_mode_ext(xudc->curr_utmi_phy, PHY_MODE_USB_OTG, USB_ROLE_NONE);
pls = (xudc_readl(xudc, PORTSC) & PORTSC_PLS_MASK) >>
PORTSC_PLS_SHIFT;
@ -643,8 +649,6 @@ static void tegra_xudc_device_mode_off(struct tegra_xudc *xudc)
xudc_writel(xudc, val, PORTSC);
}
xudc->device_mode = USB_ROLE_NONE;
/* Wait for disconnect event. */
if (connected)
wait_for_completion(&xudc->disconnect_complete);
@ -652,11 +656,11 @@ static void tegra_xudc_device_mode_off(struct tegra_xudc *xudc)
/* Make sure interrupt handler has completed before powergating. */
synchronize_irq(xudc->irq);
err = phy_power_off(xudc->utmi_phy);
err = phy_power_off(xudc->curr_utmi_phy);
if (err < 0)
dev_err(xudc->dev, "utmi_phy power off failed %d\n", err);
err = phy_power_off(xudc->usb3_phy);
err = phy_power_off(xudc->curr_usb3_phy);
if (err < 0)
dev_err(xudc->dev, "usb3_phy power off failed %d\n", err);
@ -668,30 +672,57 @@ static void tegra_xudc_usb_role_sw_work(struct work_struct *work)
struct tegra_xudc *xudc = container_of(work, struct tegra_xudc,
usb_role_sw_work);
if (!xudc->usb_role_sw ||
usb_role_switch_get_role(xudc->usb_role_sw) == USB_ROLE_DEVICE)
if (xudc->device_mode)
tegra_xudc_device_mode_on(xudc);
else
tegra_xudc_device_mode_off(xudc);
}
static int tegra_xudc_usb_role_sw_set(struct usb_role_switch *sw,
enum usb_role role)
static int tegra_xudc_get_phy_index(struct tegra_xudc *xudc,
struct usb_phy *usbphy)
{
struct tegra_xudc *xudc = usb_role_switch_get_drvdata(sw);
unsigned long flags;
unsigned int i;
dev_dbg(xudc->dev, "%s role is %d\n", __func__, role);
for (i = 0; i < xudc->soc->num_phys; i++) {
if (xudc->usbphy[i] && usbphy == xudc->usbphy[i])
return i;
}
spin_lock_irqsave(&xudc->lock, flags);
dev_info(xudc->dev, "phy index could not be found for shared USB PHY");
return -1;
}
if (!xudc->suspended)
static int tegra_xudc_vbus_notify(struct notifier_block *nb,
unsigned long action, void *data)
{
struct tegra_xudc *xudc = container_of(nb, struct tegra_xudc,
vbus_nb);
struct usb_phy *usbphy = (struct usb_phy *)data;
int phy_index;
dev_dbg(xudc->dev, "%s(): event is %d\n", __func__, usbphy->last_event);
if ((xudc->device_mode && usbphy->last_event == USB_EVENT_VBUS) ||
(!xudc->device_mode && usbphy->last_event != USB_EVENT_VBUS)) {
dev_dbg(xudc->dev, "Same role(%d) received. Ignore",
xudc->device_mode);
return NOTIFY_OK;
}
xudc->device_mode = (usbphy->last_event == USB_EVENT_VBUS) ? true :
false;
phy_index = tegra_xudc_get_phy_index(xudc, usbphy);
dev_dbg(xudc->dev, "%s(): current phy index is %d\n", __func__,
phy_index);
if (!xudc->suspended && phy_index != -1) {
xudc->curr_utmi_phy = xudc->utmi_phy[phy_index];
xudc->curr_usb3_phy = xudc->usb3_phy[phy_index];
schedule_work(&xudc->usb_role_sw_work);
}
spin_unlock_irqrestore(&xudc->lock, flags);
return 0;
return NOTIFY_OK;
}
static void tegra_xudc_plc_reset_work(struct work_struct *work)
@ -709,9 +740,11 @@ static void tegra_xudc_plc_reset_work(struct work_struct *work)
if (pls == PORTSC_PLS_INACTIVE) {
dev_info(xudc->dev, "PLS = Inactive. Toggle VBUS\n");
tegra_xusb_padctl_set_vbus_override(xudc->padctl,
false);
tegra_xusb_padctl_set_vbus_override(xudc->padctl, true);
phy_set_mode_ext(xudc->curr_utmi_phy, PHY_MODE_USB_OTG,
USB_ROLE_NONE);
phy_set_mode_ext(xudc->curr_utmi_phy, PHY_MODE_USB_OTG,
USB_ROLE_DEVICE);
xudc->wait_csc = false;
}
}
@ -730,8 +763,7 @@ static void tegra_xudc_port_reset_war_work(struct work_struct *work)
spin_lock_irqsave(&xudc->lock, flags);
if ((xudc->device_mode == USB_ROLE_DEVICE)
&& xudc->wait_for_sec_prc) {
if (xudc->device_mode && xudc->wait_for_sec_prc) {
pls = (xudc_readl(xudc, PORTSC) & PORTSC_PLS_MASK) >>
PORTSC_PLS_SHIFT;
dev_dbg(xudc->dev, "pls = %x\n", pls);
@ -739,7 +771,8 @@ static void tegra_xudc_port_reset_war_work(struct work_struct *work)
if (pls == PORTSC_PLS_DISABLED) {
dev_dbg(xudc->dev, "toggle vbus\n");
/* PRC doesn't complete in 100ms, toggle the vbus */
ret = tegra_phy_xusb_utmi_port_reset(xudc->utmi_phy);
ret = tegra_phy_xusb_utmi_port_reset(
xudc->curr_utmi_phy);
if (ret == 1)
xudc->wait_for_sec_prc = 0;
}
@ -1928,6 +1961,7 @@ static int tegra_xudc_gadget_start(struct usb_gadget *gadget,
unsigned long flags;
u32 val;
int ret;
unsigned int i;
if (!driver)
return -EINVAL;
@ -1963,6 +1997,10 @@ static int tegra_xudc_gadget_start(struct usb_gadget *gadget,
xudc_writel(xudc, val, CTRL);
}
for (i = 0; i < xudc->soc->num_phys; i++)
if (xudc->usbphy[i])
otg_set_peripheral(xudc->usbphy[i]->otg, gadget);
xudc->driver = driver;
unlock:
dev_dbg(xudc->dev, "%s: ret value is %d", __func__, ret);
@ -1978,11 +2016,16 @@ static int tegra_xudc_gadget_stop(struct usb_gadget *gadget)
struct tegra_xudc *xudc = to_xudc(gadget);
unsigned long flags;
u32 val;
unsigned int i;
pm_runtime_get_sync(xudc->dev);
spin_lock_irqsave(&xudc->lock, flags);
for (i = 0; i < xudc->soc->num_phys; i++)
if (xudc->usbphy[i])
otg_set_peripheral(xudc->usbphy[i]->otg, NULL);
val = xudc_readl(xudc, CTRL);
val &= ~(CTRL_IE | CTRL_ENABLE);
xudc_writel(xudc, val, CTRL);
@ -3315,33 +3358,120 @@ static void tegra_xudc_device_params_init(struct tegra_xudc *xudc)
xudc_writel(xudc, val, CFG_DEV_SSPI_XFER);
}
static int tegra_xudc_phy_init(struct tegra_xudc *xudc)
static int tegra_xudc_phy_get(struct tegra_xudc *xudc)
{
int err;
int err = 0, usb3;
unsigned int i;
err = phy_init(xudc->utmi_phy);
if (err < 0) {
dev_err(xudc->dev, "utmi phy init failed: %d\n", err);
return err;
xudc->utmi_phy = devm_kcalloc(xudc->dev, xudc->soc->num_phys,
sizeof(*xudc->utmi_phy), GFP_KERNEL);
if (!xudc->utmi_phy)
return -ENOMEM;
xudc->usb3_phy = devm_kcalloc(xudc->dev, xudc->soc->num_phys,
sizeof(*xudc->usb3_phy), GFP_KERNEL);
if (!xudc->usb3_phy)
return -ENOMEM;
xudc->usbphy = devm_kcalloc(xudc->dev, xudc->soc->num_phys,
sizeof(*xudc->usbphy), GFP_KERNEL);
if (!xudc->usbphy)
return -ENOMEM;
xudc->vbus_nb.notifier_call = tegra_xudc_vbus_notify;
for (i = 0; i < xudc->soc->num_phys; i++) {
char phy_name[] = "usb.-.";
/* Get USB2 phy */
snprintf(phy_name, sizeof(phy_name), "usb2-%d", i);
xudc->utmi_phy[i] = devm_phy_optional_get(xudc->dev, phy_name);
if (IS_ERR(xudc->utmi_phy[i])) {
err = PTR_ERR(xudc->utmi_phy[i]);
if (err != -EPROBE_DEFER)
dev_err(xudc->dev, "failed to get usb2-%d phy: %d\n",
i, err);
goto clean_up;
} else if (xudc->utmi_phy[i]) {
/* Get usb-phy, if utmi phy is available */
xudc->usbphy[i] = devm_usb_get_phy_by_node(xudc->dev,
xudc->utmi_phy[i]->dev.of_node,
&xudc->vbus_nb);
if (IS_ERR(xudc->usbphy[i])) {
err = PTR_ERR(xudc->usbphy[i]);
dev_err(xudc->dev, "failed to get usbphy-%d: %d\n",
i, err);
goto clean_up;
}
} else if (!xudc->utmi_phy[i]) {
/* if utmi phy is not available, ignore USB3 phy get */
continue;
}
/* Get USB3 phy */
usb3 = tegra_xusb_padctl_get_usb3_companion(xudc->padctl, i);
if (usb3 < 0)
continue;
snprintf(phy_name, sizeof(phy_name), "usb3-%d", usb3);
xudc->usb3_phy[i] = devm_phy_optional_get(xudc->dev, phy_name);
if (IS_ERR(xudc->usb3_phy[i])) {
err = PTR_ERR(xudc->usb3_phy[i]);
if (err != -EPROBE_DEFER)
dev_err(xudc->dev, "failed to get usb3-%d phy: %d\n",
usb3, err);
goto clean_up;
} else if (xudc->usb3_phy[i])
dev_dbg(xudc->dev, "usb3_phy-%d registered", usb3);
}
err = phy_init(xudc->usb3_phy);
if (err < 0) {
dev_err(xudc->dev, "usb3 phy init failed: %d\n", err);
goto exit_utmi_phy;
return err;
clean_up:
for (i = 0; i < xudc->soc->num_phys; i++) {
xudc->usb3_phy[i] = NULL;
xudc->utmi_phy[i] = NULL;
xudc->usbphy[i] = NULL;
}
return 0;
exit_utmi_phy:
phy_exit(xudc->utmi_phy);
return err;
}
static void tegra_xudc_phy_exit(struct tegra_xudc *xudc)
{
phy_exit(xudc->usb3_phy);
phy_exit(xudc->utmi_phy);
unsigned int i;
for (i = 0; i < xudc->soc->num_phys; i++) {
phy_exit(xudc->usb3_phy[i]);
phy_exit(xudc->utmi_phy[i]);
}
}
static int tegra_xudc_phy_init(struct tegra_xudc *xudc)
{
int err;
unsigned int i;
for (i = 0; i < xudc->soc->num_phys; i++) {
err = phy_init(xudc->utmi_phy[i]);
if (err < 0) {
dev_err(xudc->dev, "utmi phy init failed: %d\n", err);
goto exit_phy;
}
err = phy_init(xudc->usb3_phy[i]);
if (err < 0) {
dev_err(xudc->dev, "usb3 phy init failed: %d\n", err);
goto exit_phy;
}
}
return 0;
exit_phy:
tegra_xudc_phy_exit(xudc);
return err;
}
static const char * const tegra210_xudc_supply_names[] = {
@ -3369,6 +3499,7 @@ static struct tegra_xudc_soc tegra210_xudc_soc_data = {
.num_supplies = ARRAY_SIZE(tegra210_xudc_supply_names),
.clock_names = tegra210_xudc_clock_names,
.num_clks = ARRAY_SIZE(tegra210_xudc_clock_names),
.num_phys = 4,
.u1_enable = false,
.u2_enable = true,
.lpm_enable = false,
@ -3381,6 +3512,7 @@ static struct tegra_xudc_soc tegra210_xudc_soc_data = {
static struct tegra_xudc_soc tegra186_xudc_soc_data = {
.clock_names = tegra186_xudc_clock_names,
.num_clks = ARRAY_SIZE(tegra186_xudc_clock_names),
.num_phys = 4,
.u1_enable = true,
.u2_enable = true,
.lpm_enable = false,
@ -3458,7 +3590,6 @@ static int tegra_xudc_probe(struct platform_device *pdev)
{
struct tegra_xudc *xudc;
struct resource *res;
struct usb_role_switch_desc role_sx_desc = { 0 };
unsigned int i;
int err;
@ -3544,19 +3675,9 @@ static int tegra_xudc_probe(struct platform_device *pdev)
goto put_padctl;
}
xudc->usb3_phy = devm_phy_optional_get(&pdev->dev, "usb3");
if (IS_ERR(xudc->usb3_phy)) {
err = PTR_ERR(xudc->usb3_phy);
dev_err(xudc->dev, "failed to get usb3 phy: %d\n", err);
err = tegra_xudc_phy_get(xudc);
if (err)
goto disable_regulator;
}
xudc->utmi_phy = devm_phy_optional_get(&pdev->dev, "usb2");
if (IS_ERR(xudc->utmi_phy)) {
err = PTR_ERR(xudc->utmi_phy);
dev_err(xudc->dev, "failed to get usb2 phy: %d\n", err);
goto disable_regulator;
}
err = tegra_xudc_powerdomain_init(xudc);
if (err)
@ -3585,25 +3706,6 @@ static int tegra_xudc_probe(struct platform_device *pdev)
INIT_DELAYED_WORK(&xudc->port_reset_war_work,
tegra_xudc_port_reset_war_work);
if (of_property_read_bool(xudc->dev->of_node, "usb-role-switch")) {
role_sx_desc.set = tegra_xudc_usb_role_sw_set;
role_sx_desc.fwnode = dev_fwnode(xudc->dev);
role_sx_desc.driver_data = xudc;
xudc->usb_role_sw = usb_role_switch_register(xudc->dev,
&role_sx_desc);
if (IS_ERR(xudc->usb_role_sw)) {
err = PTR_ERR(xudc->usb_role_sw);
dev_err(xudc->dev, "Failed to register USB role SW: %d",
err);
goto free_eps;
}
} else {
/* Set the mode as device mode and this keeps phy always ON */
dev_info(xudc->dev, "Set usb role to device mode always");
schedule_work(&xudc->usb_role_sw_work);
}
pm_runtime_enable(&pdev->dev);
xudc->gadget.ops = &tegra_xudc_gadget_ops;
@ -3638,15 +3740,12 @@ put_padctl:
static int tegra_xudc_remove(struct platform_device *pdev)
{
struct tegra_xudc *xudc = platform_get_drvdata(pdev);
unsigned int i;
pm_runtime_get_sync(xudc->dev);
cancel_delayed_work(&xudc->plc_reset_work);
if (xudc->usb_role_sw) {
usb_role_switch_unregister(xudc->usb_role_sw);
cancel_work_sync(&xudc->usb_role_sw_work);
}
cancel_work_sync(&xudc->usb_role_sw_work);
usb_del_gadget_udc(&xudc->gadget);
@ -3657,8 +3756,10 @@ static int tegra_xudc_remove(struct platform_device *pdev)
regulator_bulk_disable(xudc->soc->num_supplies, xudc->supplies);
phy_power_off(xudc->utmi_phy);
phy_power_off(xudc->usb3_phy);
for (i = 0; i < xudc->soc->num_phys; i++) {
phy_power_off(xudc->utmi_phy[i]);
phy_power_off(xudc->usb3_phy[i]);
}
tegra_xudc_phy_exit(xudc);

228
drivers/usb/host/xhci-tegra.c
View File

@ -24,6 +24,9 @@
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/usb/otg.h>
#include <linux/usb/phy.h>
#include <linux/usb/role.h>
#include <soc/tegra/pmc.h>
#include "xhci.h"
@ -204,6 +207,7 @@ struct tegra_xusb_soc {
bool scale_ss_clock;
bool has_ipfs;
bool lpm_support;
bool otg_reset_sspi;
};
struct tegra_xusb_context {
@ -251,6 +255,14 @@ struct tegra_xusb {
struct phy **phys;
unsigned int num_phys;
struct usb_phy **usbphy;
unsigned int num_usb_phys;
int otg_usb2_port;
int otg_usb3_port;
bool host_mode;
struct notifier_block id_nb;
struct work_struct id_work;
/* Firmware loading related */
struct {
size_t size;
@ -1082,6 +1094,205 @@ static int tegra_xusb_enable_firmware_messages(struct tegra_xusb *tegra)
return err;
}
static void tegra_xhci_set_port_power(struct tegra_xusb *tegra, bool main,
bool set)
{
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
struct usb_hcd *hcd = main ? xhci->main_hcd : xhci->shared_hcd;
unsigned int wait = (!main && !set) ? 1000 : 10;
u16 typeReq = set ? SetPortFeature : ClearPortFeature;
u16 wIndex = main ? tegra->otg_usb2_port + 1 : tegra->otg_usb3_port + 1;
u32 status;
u32 stat_power = main ? USB_PORT_STAT_POWER : USB_SS_PORT_STAT_POWER;
u32 status_val = set ? stat_power : 0;
dev_dbg(tegra->dev, "%s():%s %s port power\n", __func__,
set ? "set" : "clear", main ? "HS" : "SS");
hcd->driver->hub_control(hcd, typeReq, USB_PORT_FEAT_POWER, wIndex,
NULL, 0);
do {
tegra_xhci_hc_driver.hub_control(hcd, GetPortStatus, 0, wIndex,
(char *) &status, sizeof(status));
if (status_val == (status & stat_power))
break;
if (!main && !set)
usleep_range(600, 700);
else
usleep_range(10, 20);
} while (--wait > 0);
if (status_val != (status & stat_power))
dev_info(tegra->dev, "failed to %s %s PP %d\n",
set ? "set" : "clear",
main ? "HS" : "SS", status);
}
static struct phy *tegra_xusb_get_phy(struct tegra_xusb *tegra, char *name,
int port)
{
unsigned int i, phy_count = 0;
for (i = 0; i < tegra->soc->num_types; i++) {
if (!strncmp(tegra->soc->phy_types[i].name, "usb2",
strlen(name)))
return tegra->phys[phy_count+port];
phy_count += tegra->soc->phy_types[i].num;
}
return NULL;
}
static void tegra_xhci_id_work(struct work_struct *work)
{
struct tegra_xusb *tegra = container_of(work, struct tegra_xusb,
id_work);
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
struct tegra_xusb_mbox_msg msg;
struct phy *phy = tegra_xusb_get_phy(tegra, "usb2",
tegra->otg_usb2_port);
u32 status;
int ret;
dev_dbg(tegra->dev, "host mode %s\n", tegra->host_mode ? "on" : "off");
mutex_lock(&tegra->lock);
if (tegra->host_mode)
phy_set_mode_ext(phy, PHY_MODE_USB_OTG, USB_ROLE_HOST);
else
phy_set_mode_ext(phy, PHY_MODE_USB_OTG, USB_ROLE_NONE);
mutex_unlock(&tegra->lock);
if (tegra->host_mode) {
/* switch to host mode */
if (tegra->otg_usb3_port >= 0) {
if (tegra->soc->otg_reset_sspi) {
/* set PP=0 */
tegra_xhci_hc_driver.hub_control(
xhci->shared_hcd, GetPortStatus,
0, tegra->otg_usb3_port+1,
(char *) &status, sizeof(status));
if (status & USB_SS_PORT_STAT_POWER)
tegra_xhci_set_port_power(tegra, false,
false);
/* reset OTG port SSPI */
msg.cmd = MBOX_CMD_RESET_SSPI;
msg.data = tegra->otg_usb3_port+1;
ret = tegra_xusb_mbox_send(tegra, &msg);
if (ret < 0) {
dev_info(tegra->dev,
"failed to RESET_SSPI %d\n",
ret);
}
}
tegra_xhci_set_port_power(tegra, false, true);
}
tegra_xhci_set_port_power(tegra, true, true);
} else {
if (tegra->otg_usb3_port >= 0)
tegra_xhci_set_port_power(tegra, false, false);
tegra_xhci_set_port_power(tegra, true, false);
}
}
static int tegra_xusb_get_usb2_port(struct tegra_xusb *tegra,
struct usb_phy *usbphy)
{
unsigned int i;
for (i = 0; i < tegra->num_usb_phys; i++) {
if (tegra->usbphy[i] && usbphy == tegra->usbphy[i])
return i;
}
return -1;
}
static int tegra_xhci_id_notify(struct notifier_block *nb,
unsigned long action, void *data)
{
struct tegra_xusb *tegra = container_of(nb, struct tegra_xusb,
id_nb);
struct usb_phy *usbphy = (struct usb_phy *)data;
dev_dbg(tegra->dev, "%s(): action is %d", __func__, usbphy->last_event);
if ((tegra->host_mode && usbphy->last_event == USB_EVENT_ID) ||
(!tegra->host_mode && usbphy->last_event != USB_EVENT_ID)) {
dev_dbg(tegra->dev, "Same role(%d) received. Ignore",
tegra->host_mode);
return NOTIFY_OK;
}
tegra->otg_usb2_port = tegra_xusb_get_usb2_port(tegra, usbphy);
tegra->otg_usb3_port = tegra_xusb_padctl_get_usb3_companion(
tegra->padctl,
tegra->otg_usb2_port);
tegra->host_mode = (usbphy->last_event == USB_EVENT_ID) ? true : false;
schedule_work(&tegra->id_work);
return NOTIFY_OK;
}
static int tegra_xusb_init_usb_phy(struct tegra_xusb *tegra)
{
unsigned int i;
tegra->usbphy = devm_kcalloc(tegra->dev, tegra->num_usb_phys,
sizeof(*tegra->usbphy), GFP_KERNEL);
if (!tegra->usbphy)
return -ENOMEM;
INIT_WORK(&tegra->id_work, tegra_xhci_id_work);
tegra->id_nb.notifier_call = tegra_xhci_id_notify;
for (i = 0; i < tegra->num_usb_phys; i++) {
struct phy *phy = tegra_xusb_get_phy(tegra, "usb2", i);
if (!phy)
continue;
tegra->usbphy[i] = devm_usb_get_phy_by_node(tegra->dev,
phy->dev.of_node,
&tegra->id_nb);
if (!IS_ERR(tegra->usbphy[i])) {
dev_dbg(tegra->dev, "usbphy-%d registered", i);
otg_set_host(tegra->usbphy[i]->otg, &tegra->hcd->self);
} else {
/*
* usb-phy is optional, continue if its not available.
*/
tegra->usbphy[i] = NULL;
}
}
return 0;
}
static void tegra_xusb_deinit_usb_phy(struct tegra_xusb *tegra)
{
unsigned int i;
cancel_work_sync(&tegra->id_work);
for (i = 0; i < tegra->num_usb_phys; i++)
if (tegra->usbphy[i])
otg_set_host(tegra->usbphy[i]->otg, NULL);
}
static int tegra_xusb_probe(struct platform_device *pdev)
{
struct tegra_xusb *tegra;
@ -1255,8 +1466,11 @@ static int tegra_xusb_probe(struct platform_device *pdev)
goto put_powerdomains;
}
for (i = 0; i < tegra->soc->num_types; i++)
for (i = 0; i < tegra->soc->num_types; i++) {
if (!strncmp(tegra->soc->phy_types[i].name, "usb2", 4))
tegra->num_usb_phys = tegra->soc->phy_types[i].num;
tegra->num_phys += tegra->soc->phy_types[i].num;
}
tegra->phys = devm_kcalloc(&pdev->dev, tegra->num_phys,
sizeof(*tegra->phys), GFP_KERNEL);
@ -1385,6 +1599,12 @@ static int tegra_xusb_probe(struct platform_device *pdev)
goto remove_usb3;
}
err = tegra_xusb_init_usb_phy(tegra);
if (err < 0) {
dev_err(&pdev->dev, "failed to init USB PHY: %d\n", err);
goto remove_usb3;
}
return 0;
remove_usb3:
@ -1421,6 +1641,8 @@ static int tegra_xusb_remove(struct platform_device *pdev)
struct tegra_xusb *tegra = platform_get_drvdata(pdev);
struct xhci_hcd *xhci = hcd_to_xhci(tegra->hcd);
tegra_xusb_deinit_usb_phy(tegra);
usb_remove_hcd(xhci->shared_hcd);
usb_put_hcd(xhci->shared_hcd);
xhci->shared_hcd = NULL;
@ -1695,6 +1917,7 @@ static const struct tegra_xusb_soc tegra124_soc = {
},
.scale_ss_clock = true,
.has_ipfs = true,
.otg_reset_sspi = false,
.mbox = {
.cmd = 0xe4,
.data_in = 0xe8,
@ -1734,6 +1957,7 @@ static const struct tegra_xusb_soc tegra210_soc = {
},
.scale_ss_clock = false,
.has_ipfs = true,
.otg_reset_sspi = true,
.mbox = {
.cmd = 0xe4,
.data_in = 0xe8,
@ -1774,6 +1998,7 @@ static const struct tegra_xusb_soc tegra186_soc = {
},
.scale_ss_clock = false,
.has_ipfs = false,
.otg_reset_sspi = false,
.mbox = {
.cmd = 0xe4,
.data_in = 0xe8,
@ -1804,6 +2029,7 @@ static const struct tegra_xusb_soc tegra194_soc = {
},
.scale_ss_clock = false,
.has_ipfs = false,
.otg_reset_sspi = false,
.mbox = {
.cmd = 0x68,
.data_in = 0x6c,

2
include/linux/phy/tegra/xusb.h
View File

@ -21,4 +21,6 @@ int tegra_xusb_padctl_usb3_set_lfps_detect(struct tegra_xusb_padctl *padctl,
int tegra_xusb_padctl_set_vbus_override(struct tegra_xusb_padctl *padctl,
bool val);
int tegra_phy_xusb_utmi_port_reset(struct phy *phy);
int tegra_xusb_padctl_get_usb3_companion(struct tegra_xusb_padctl *padctl,
unsigned int port);
#endif /* PHY_TEGRA_XUSB_H */