// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Allwinner sun4i USB phy driver
*
* Copyright ( C ) 2014 - 2015 Hans de Goede < hdegoede @ redhat . com >
*
* Based on code from
* Allwinner Technology Co . , Ltd . < www . allwinnertech . com >
*
* Modelled after : Samsung S5P / Exynos SoC series MIPI CSIS / DSIM DPHY driver
* Copyright ( C ) 2013 Samsung Electronics Co . , Ltd .
* Author : Sylwester Nawrocki < s . nawrocki @ samsung . com >
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/extcon-provider.h>
#include <linux/gpio/consumer.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/phy/phy.h>
#include <linux/phy/phy-sun4i-usb.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/spinlock.h>
#include <linux/usb/of.h>
#include <linux/workqueue.h>
#define REG_ISCR 0 x00
#define REG_PHYCTL_A10 0 x04
#define REG_PHYBIST 0 x08
#define REG_PHYTUNE 0 x0c
#define REG_PHYCTL_A33 0 x10
#define REG_PHY_OTGCTL 0 x20
#define REG_HCI_PHY_CTL 0 x10
#define PHYCTL_DATA BIT(7 )
#define OTGCTL_ROUTE_MUSB BIT(0 )
#define SUNXI_AHB_ICHR8_EN BIT(10 )
#define SUNXI_AHB_INCR4_BURST_EN BIT(9 )
#define SUNXI_AHB_INCRX_ALIGN_EN BIT(8 )
#define SUNXI_ULPI_BYPASS_EN BIT(0 )
/* ISCR, Interface Status and Control bits */
#define ISCR_ID_PULLUP_EN (1 << 17 )
#define ISCR_DPDM_PULLUP_EN (1 << 16 )
/* sunxi has the phy id/vbus pins not connected, so we use the force bits */
#define ISCR_FORCE_ID_MASK (3 << 14 )
#define ISCR_FORCE_ID_LOW (2 << 14 )
#define ISCR_FORCE_ID_HIGH (3 << 14 )
#define ISCR_FORCE_VBUS_MASK (3 << 12 )
#define ISCR_FORCE_VBUS_LOW (2 << 12 )
#define ISCR_FORCE_VBUS_HIGH (3 << 12 )
/* Common Control Bits for Both PHYs */
#define PHY_PLL_BW 0 x03
#define PHY_RES45_CAL_EN 0 x0c
/* Private Control Bits for Each PHY */
#define PHY_TX_AMPLITUDE_TUNE 0 x20
#define PHY_TX_SLEWRATE_TUNE 0 x22
#define PHY_VBUSVALID_TH_SEL 0 x25
#define PHY_PULLUP_RES_SEL 0 x27
#define PHY_OTG_FUNC_EN 0 x28
#define PHY_VBUS_DET_EN 0 x29
#define PHY_DISCON_TH_SEL 0 x2a
#define PHY_SQUELCH_DETECT 0 x3c
/* A83T specific control bits for PHY0 */
#define PHY_CTL_VBUSVLDEXT BIT(5 )
#define PHY_CTL_SIDDQ BIT(3 )
#define PHY_CTL_H3_SIDDQ BIT(1 )
/* A83T specific control bits for PHY2 HSIC */
#define SUNXI_EHCI_HS_FORCE BIT(20 )
#define SUNXI_HSIC_CONNECT_DET BIT(17 )
#define SUNXI_HSIC_CONNECT_INT BIT(16 )
#define SUNXI_HSIC BIT(1 )
#define MAX_PHYS 4
/*
* Note do not raise the debounce time , we must report Vusb high within 100 ms
* otherwise we get Vbus errors
*/
#define DEBOUNCE_TIME msecs_to_jiffies(50 )
#define POLL_TIME msecs_to_jiffies(250 )
struct sun4i_usb_phy_cfg {
int num_phys;
int hsic_index;
u32 disc_thresh;
u32 hci_phy_ctl_clear;
u8 phyctl_offset;
bool dedicated_clocks;
bool phy0_dual_route;
bool needs_phy2_siddq;
bool siddq_in_base;
bool poll_vbusen;
int missing_phys;
};
struct sun4i_usb_phy_data {
void __iomem *base;
const struct sun4i_usb_phy_cfg *cfg;
enum usb_dr_mode dr_mode;
spinlock_t reg_lock; /* guard access to phyctl reg */
struct sun4i_usb_phy {
struct phy *phy;
void __iomem *pmu;
struct regulator *vbus;
struct reset_control *reset;
struct clk *clk;
struct clk *clk2;
bool regulator_on;
int index;
} phys[MAX_PHYS];
/* phy0 / otg related variables */
struct extcon_dev *extcon;
bool phy0_init;
struct gpio_desc *id_det_gpio;
struct gpio_desc *vbus_det_gpio;
struct power_supply *vbus_power_supply;
struct notifier_block vbus_power_nb;
bool vbus_power_nb_registered;
bool force_session_end;
int id_det_irq;
int vbus_det_irq;
int id_det;
int vbus_det;
struct delayed_work detect;
};
#define to_sun4i_usb_phy_data(phy) \
container_of((phy), struct sun4i_usb_phy_data, phys[(phy)->index])
static void sun4i_usb_phy0_update_iscr(struct phy *_phy, u32 clr, u32 set)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
u32 iscr;
iscr = readl(data->base + REG_ISCR);
iscr &= ~clr;
iscr |= set;
writel(iscr, data->base + REG_ISCR);
}
static void sun4i_usb_phy0_set_id_detect(struct phy *phy, u32 val)
{
if (val)
val = ISCR_FORCE_ID_HIGH;
else
val = ISCR_FORCE_ID_LOW;
sun4i_usb_phy0_update_iscr(phy, ISCR_FORCE_ID_MASK, val);
}
static void sun4i_usb_phy0_set_vbus_detect(struct phy *phy, u32 val)
{
if (val)
val = ISCR_FORCE_VBUS_HIGH;
else
val = ISCR_FORCE_VBUS_LOW;
sun4i_usb_phy0_update_iscr(phy, ISCR_FORCE_VBUS_MASK, val);
}
static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data,
int len)
{
struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy);
u32 temp, usbc_bit = BIT(phy->index * 2 );
void __iomem *phyctl = phy_data->base + phy_data->cfg->phyctl_offset;
unsigned long flags;
int i;
spin_lock_irqsave(&phy_data->reg_lock, flags);
if (phy_data->cfg->phyctl_offset == REG_PHYCTL_A33) {
/* SoCs newer than A33 need us to set phyctl to 0 explicitly */
writel(0 , phyctl);
}
for (i = 0 ; i < len; i++) {
temp = readl(phyctl);
/* clear the address portion */
temp &= ~(0 xff << 8 );
/* set the address */
temp |= ((addr + i) << 8 );
writel(temp, phyctl);
/* set the data bit and clear usbc bit*/
temp = readb(phyctl);
if (data & 0 x1)
temp |= PHYCTL_DATA;
else
temp &= ~PHYCTL_DATA;
temp &= ~usbc_bit;
writeb(temp, phyctl);
/* pulse usbc_bit */
temp = readb(phyctl);
temp |= usbc_bit;
writeb(temp, phyctl);
temp = readb(phyctl);
temp &= ~usbc_bit;
writeb(temp, phyctl);
data >>= 1 ;
}
spin_unlock_irqrestore(&phy_data->reg_lock, flags);
}
static void sun4i_usb_phy_passby(struct sun4i_usb_phy *phy, int enable)
{
struct sun4i_usb_phy_data *phy_data = to_sun4i_usb_phy_data(phy);
u32 bits, reg_value;
if (!phy->pmu)
return ;
bits = SUNXI_AHB_ICHR8_EN | SUNXI_AHB_INCR4_BURST_EN |
SUNXI_AHB_INCRX_ALIGN_EN | SUNXI_ULPI_BYPASS_EN;
/* A83T USB2 is HSIC */
if (phy_data->cfg->hsic_index &&
phy->index == phy_data->cfg->hsic_index)
bits |= SUNXI_EHCI_HS_FORCE | SUNXI_HSIC_CONNECT_INT |
SUNXI_HSIC;
reg_value = readl(phy->pmu);
if (enable)
reg_value |= bits;
else
reg_value &= ~bits;
writel(reg_value, phy->pmu);
}
static int sun4i_usb_phy_init(struct phy *_phy)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
int ret;
u32 val;
ret = clk_prepare_enable(phy->clk);
if (ret)
return ret;
ret = clk_prepare_enable(phy->clk2);
if (ret) {
clk_disable_unprepare(phy->clk);
return ret;
}
ret = reset_control_deassert(phy->reset);
if (ret) {
clk_disable_unprepare(phy->clk2);
clk_disable_unprepare(phy->clk);
return ret;
}
/* Some PHYs on some SoCs need the help of PHY2 to work. */
if (data->cfg->needs_phy2_siddq && phy->index != 2 ) {
struct sun4i_usb_phy *phy2 = &data->phys[2 ];
ret = clk_prepare_enable(phy2->clk);
if (ret) {
reset_control_assert(phy->reset);
clk_disable_unprepare(phy->clk2);
clk_disable_unprepare(phy->clk);
return ret;
}
ret = reset_control_deassert(phy2->reset);
if (ret) {
clk_disable_unprepare(phy2->clk);
reset_control_assert(phy->reset);
clk_disable_unprepare(phy->clk2);
clk_disable_unprepare(phy->clk);
return ret;
}
/*
* This extra clock is just needed to access the
* REG_HCI_PHY_CTL PMU register for PHY2 .
*/
ret = clk_prepare_enable(phy2->clk2);
if (ret) {
reset_control_assert(phy2->reset);
clk_disable_unprepare(phy2->clk);
reset_control_assert(phy->reset);
clk_disable_unprepare(phy->clk2);
clk_disable_unprepare(phy->clk);
return ret;
}
if (phy2->pmu && data->cfg->hci_phy_ctl_clear) {
val = readl(phy2->pmu + REG_HCI_PHY_CTL);
val &= ~data->cfg->hci_phy_ctl_clear;
writel(val, phy2->pmu + REG_HCI_PHY_CTL);
}
clk_disable_unprepare(phy->clk2);
}
if (phy->pmu && data->cfg->hci_phy_ctl_clear) {
val = readl(phy->pmu + REG_HCI_PHY_CTL);
val &= ~data->cfg->hci_phy_ctl_clear;
writel(val, phy->pmu + REG_HCI_PHY_CTL);
}
if (data->cfg->siddq_in_base) {
if (phy->index == 0 ) {
val = readl(data->base + data->cfg->phyctl_offset);
val |= PHY_CTL_VBUSVLDEXT;
val &= ~PHY_CTL_SIDDQ;
writel(val, data->base + data->cfg->phyctl_offset);
}
} else {
/* Enable USB 45 Ohm resistor calibration */
if (phy->index == 0 )
sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0 x01, 1 );
/* Adjust PHY's magnitude and rate */
sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0 x14, 5 );
/* Disconnect threshold adjustment */
sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL,
data->cfg->disc_thresh, 2 );
}
sun4i_usb_phy_passby(phy, 1 );
if (phy->index == 0 ) {
data->phy0_init = true ;
/* Enable pull-ups */
sun4i_usb_phy0_update_iscr(_phy, 0 , ISCR_DPDM_PULLUP_EN);
sun4i_usb_phy0_update_iscr(_phy, 0 , ISCR_ID_PULLUP_EN);
/* Force ISCR and cable state updates */
data->id_det = -1 ;
data->vbus_det = -1 ;
queue_delayed_work(system_wq, &data->detect, 0 );
}
return 0 ;
}
static int sun4i_usb_phy_exit(struct phy *_phy)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
if (phy->index == 0 ) {
if (data->cfg->siddq_in_base) {
void __iomem *phyctl = data->base +
data->cfg->phyctl_offset;
writel(readl(phyctl) | PHY_CTL_SIDDQ, phyctl);
}
/* Disable pull-ups */
sun4i_usb_phy0_update_iscr(_phy, ISCR_DPDM_PULLUP_EN, 0 );
sun4i_usb_phy0_update_iscr(_phy, ISCR_ID_PULLUP_EN, 0 );
data->phy0_init = false ;
}
if (data->cfg->needs_phy2_siddq && phy->index != 2 ) {
struct sun4i_usb_phy *phy2 = &data->phys[2 ];
clk_disable_unprepare(phy2->clk);
reset_control_assert(phy2->reset);
}
sun4i_usb_phy_passby(phy, 0 );
reset_control_assert(phy->reset);
clk_disable_unprepare(phy->clk2);
clk_disable_unprepare(phy->clk);
return 0 ;
}
static int sun4i_usb_phy0_get_id_det(struct sun4i_usb_phy_data *data)
{
switch (data->dr_mode) {
case USB_DR_MODE_OTG:
if (data->id_det_gpio)
return gpiod_get_value_cansleep(data->id_det_gpio);
else
return 1 ; /* Fallback to peripheral mode */
case USB_DR_MODE_HOST:
return 0 ;
case USB_DR_MODE_PERIPHERAL:
default :
return 1 ;
}
}
static int sun4i_usb_phy0_get_vbus_det(struct sun4i_usb_phy_data *data)
{
if (data->vbus_det_gpio)
return gpiod_get_value_cansleep(data->vbus_det_gpio);
if (data->vbus_power_supply) {
union power_supply_propval val;
int r;
r = power_supply_get_property(data->vbus_power_supply,
POWER_SUPPLY_PROP_PRESENT, &val);
if (r == 0 )
return val.intval;
}
/* Fallback: report vbus as high */
return 1 ;
}
static bool sun4i_usb_phy0_have_vbus_det(struct sun4i_usb_phy_data *data)
{
return data->vbus_det_gpio || data->vbus_power_supply;
}
static bool sun4i_usb_phy0_poll(struct sun4i_usb_phy_data *data)
{
if ((data->id_det_gpio && data->id_det_irq <= 0 ) ||
(data->vbus_det_gpio && data->vbus_det_irq <= 0 ))
return true ;
/*
* The A31 / A23 / A33 companion pmics ( AXP221 / AXP223 ) do not
* generate vbus change interrupts when the board is driving
* vbus using the N_VBUSEN pin on the pmic , so we must poll
* when using the pmic for vbus - det _ and_ we ' re driving vbus .
*/
if (data->cfg->poll_vbusen && data->vbus_power_supply &&
data->phys[0 ].regulator_on)
return true ;
return false ;
}
static int sun4i_usb_phy_power_on(struct phy *_phy)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
int ret;
if (!phy->vbus || phy->regulator_on)
return 0 ;
/* For phy0 only turn on Vbus if we don't have an ext. Vbus */
if (phy->index == 0 && sun4i_usb_phy0_have_vbus_det(data) &&
data->vbus_det) {
dev_warn(&_phy->dev, "External vbus detected, not enabling our own vbus\n" );
return 0 ;
}
ret = regulator_enable(phy->vbus);
if (ret)
return ret;
phy->regulator_on = true ;
/* We must report Vbus high within OTG_TIME_A_WAIT_VRISE msec. */
if (phy->index == 0 && sun4i_usb_phy0_poll(data))
mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
return 0 ;
}
static int sun4i_usb_phy_power_off(struct phy *_phy)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
if (!phy->vbus || !phy->regulator_on)
return 0 ;
regulator_disable(phy->vbus);
phy->regulator_on = false ;
/*
* phy0 vbus typically slowly discharges , sometimes this causes the
* Vbus gpio to not trigger an edge irq on Vbus off , so force a rescan .
*/
if (phy->index == 0 && !sun4i_usb_phy0_poll(data))
mod_delayed_work(system_wq, &data->detect, POLL_TIME);
return 0 ;
}
static int sun4i_usb_phy_set_mode(struct phy *_phy,
enum phy_mode mode, int submode)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
struct sun4i_usb_phy_data *data = to_sun4i_usb_phy_data(phy);
int new_mode;
if (phy->index != 0 ) {
if (mode == PHY_MODE_USB_HOST)
return 0 ;
return -EINVAL;
}
switch (mode) {
case PHY_MODE_USB_HOST:
new_mode = USB_DR_MODE_HOST;
break ;
case PHY_MODE_USB_DEVICE:
new_mode = USB_DR_MODE_PERIPHERAL;
break ;
case PHY_MODE_USB_OTG:
new_mode = USB_DR_MODE_OTG;
break ;
default :
return -EINVAL;
}
if (new_mode != data->dr_mode) {
dev_info(&_phy->dev, "Changing dr_mode to %d\n" , new_mode);
data->dr_mode = new_mode;
}
data->id_det = -1 ; /* Force reprocessing of id */
data->force_session_end = true ;
queue_delayed_work(system_wq, &data->detect, 0 );
return 0 ;
}
void sun4i_usb_phy_set_squelch_detect(struct phy *_phy, bool enabled)
{
struct sun4i_usb_phy *phy = phy_get_drvdata(_phy);
sun4i_usb_phy_write(phy, PHY_SQUELCH_DETECT, enabled ? 0 : 2 , 2 );
}
EXPORT_SYMBOL_GPL(sun4i_usb_phy_set_squelch_detect);
static const struct phy_ops sun4i_usb_phy_ops = {
.init = sun4i_usb_phy_init,
.exit = sun4i_usb_phy_exit,
.power_on = sun4i_usb_phy_power_on,
.power_off = sun4i_usb_phy_power_off,
.set_mode = sun4i_usb_phy_set_mode,
.owner = THIS_MODULE,
};
static void sun4i_usb_phy0_reroute(struct sun4i_usb_phy_data *data, int id_det)
{
u32 regval;
regval = readl(data->base + REG_PHY_OTGCTL);
if (id_det == 0 ) {
/* Host mode. Route phy0 to EHCI/OHCI */
regval &= ~OTGCTL_ROUTE_MUSB;
} else {
/* Peripheral mode. Route phy0 to MUSB */
regval |= OTGCTL_ROUTE_MUSB;
}
writel(regval, data->base + REG_PHY_OTGCTL);
}
static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work)
{
struct sun4i_usb_phy_data *data =
container_of(work, struct sun4i_usb_phy_data, detect.work);
struct phy *phy0 = data->phys[0 ].phy;
struct sun4i_usb_phy *phy;
bool force_session_end, id_notify = false , vbus_notify = false ;
int id_det, vbus_det;
if (!phy0)
return ;
phy = phy_get_drvdata(phy0);
id_det = sun4i_usb_phy0_get_id_det(data);
vbus_det = sun4i_usb_phy0_get_vbus_det(data);
mutex_lock(&phy0->mutex);
if (!data->phy0_init) {
mutex_unlock(&phy0->mutex);
return ;
}
force_session_end = data->force_session_end;
data->force_session_end = false ;
if (id_det != data->id_det) {
/* id-change, force session end if we've no vbus detection */
if (data->dr_mode == USB_DR_MODE_OTG &&
!sun4i_usb_phy0_have_vbus_det(data))
force_session_end = true ;
/* When entering host mode (id = 0) force end the session now */
if (force_session_end && id_det == 0 ) {
sun4i_usb_phy0_set_vbus_detect(phy0, 0 );
msleep(200 );
sun4i_usb_phy0_set_vbus_detect(phy0, 1 );
}
sun4i_usb_phy0_set_id_detect(phy0, id_det);
data->id_det = id_det;
id_notify = true ;
}
if (vbus_det != data->vbus_det) {
sun4i_usb_phy0_set_vbus_detect(phy0, vbus_det);
data->vbus_det = vbus_det;
vbus_notify = true ;
}
mutex_unlock(&phy0->mutex);
if (id_notify) {
extcon_set_state_sync(data->extcon, EXTCON_USB_HOST,
!id_det);
/* When leaving host mode force end the session here */
if (force_session_end && id_det == 1 ) {
mutex_lock(&phy0->mutex);
sun4i_usb_phy0_set_vbus_detect(phy0, 0 );
msleep(1000 );
sun4i_usb_phy0_set_vbus_detect(phy0, 1 );
mutex_unlock(&phy0->mutex);
}
/* Enable PHY0 passby for host mode only. */
sun4i_usb_phy_passby(phy, !id_det);
/* Re-route PHY0 if necessary */
if (data->cfg->phy0_dual_route)
sun4i_usb_phy0_reroute(data, id_det);
}
if (vbus_notify)
extcon_set_state_sync(data->extcon, EXTCON_USB, vbus_det);
if (sun4i_usb_phy0_poll(data))
queue_delayed_work(system_wq, &data->detect, POLL_TIME);
}
static irqreturn_t sun4i_usb_phy0_id_vbus_det_irq(int irq, void *dev_id)
{
struct sun4i_usb_phy_data *data = dev_id;
/* vbus or id changed, let the pins settle and then scan them */
mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
return IRQ_HANDLED;
}
static int sun4i_usb_phy0_vbus_notify(struct notifier_block *nb,
unsigned long val, void *v)
{
struct sun4i_usb_phy_data *data =
container_of(nb, struct sun4i_usb_phy_data, vbus_power_nb);
struct power_supply *psy = v;
/* Properties on the vbus_power_supply changed, scan vbus_det */
if (val == PSY_EVENT_PROP_CHANGED && psy == data->vbus_power_supply)
mod_delayed_work(system_wq, &data->detect, DEBOUNCE_TIME);
return NOTIFY_OK;
}
static struct phy *sun4i_usb_phy_xlate(struct device *dev,
const struct of_phandle_args *args)
{
struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
if (args->args[0 ] >= data->cfg->num_phys)
return ERR_PTR(-ENODEV);
if (data->cfg->missing_phys & BIT(args->args[0 ]))
return ERR_PTR(-ENODEV);
return data->phys[args->args[0 ]].phy;
}
static void sun4i_usb_phy_remove(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct sun4i_usb_phy_data *data = dev_get_drvdata(dev);
if (data->vbus_power_nb_registered)
power_supply_unreg_notifier(&data->vbus_power_nb);
if (data->id_det_irq > 0 )
devm_free_irq(dev, data->id_det_irq, data);
if (data->vbus_det_irq > 0 )
devm_free_irq(dev, data->vbus_det_irq, data);
cancel_delayed_work_sync(&data->detect);
}
static const unsigned int sun4i_usb_phy0_cable[] = {
EXTCON_USB,
EXTCON_USB_HOST,
EXTCON_NONE,
};
static int sun4i_usb_phy_probe(struct platform_device *pdev)
{
struct sun4i_usb_phy_data *data;
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct phy_provider *phy_provider;
int i, ret;
data = devm_kzalloc(dev, sizeof (*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
spin_lock_init(&data->reg_lock);
INIT_DELAYED_WORK(&data->detect, sun4i_usb_phy0_id_vbus_det_scan);
dev_set_drvdata(dev, data);
data->cfg = of_device_get_match_data(dev);
if (!data->cfg)
return -EINVAL;
data->base = devm_platform_ioremap_resource_byname(pdev, "phy_ctrl" );
if (IS_ERR(data->base))
return PTR_ERR(data->base);
data->id_det_gpio = devm_gpiod_get_optional(dev, "usb0_id_det" ,
GPIOD_IN);
if (IS_ERR(data->id_det_gpio)) {
dev_err(dev, "Couldn't request ID GPIO\n" );
return PTR_ERR(data->id_det_gpio);
}
data->vbus_det_gpio = devm_gpiod_get_optional(dev, "usb0_vbus_det" ,
GPIOD_IN);
if (IS_ERR(data->vbus_det_gpio)) {
dev_err(dev, "Couldn't request VBUS detect GPIO\n" );
return PTR_ERR(data->vbus_det_gpio);
}
if (of_property_present(np, "usb0_vbus_power-supply" )) {
data->vbus_power_supply = devm_power_supply_get_by_reference(dev,
"usb0_vbus_power-supply" );
if (IS_ERR(data->vbus_power_supply)) {
dev_err(dev, "Couldn't get the VBUS power supply\n" );
return PTR_ERR(data->vbus_power_supply);
}
if (!data->vbus_power_supply)
return -EPROBE_DEFER;
}
data->dr_mode = of_usb_get_dr_mode_by_phy(np, 0 );
data->extcon = devm_extcon_dev_allocate(dev, sun4i_usb_phy0_cable);
if (IS_ERR(data->extcon)) {
dev_err(dev, "Couldn't allocate our extcon device\n" );
return PTR_ERR(data->extcon);
}
ret = devm_extcon_dev_register(dev, data->extcon);
if (ret) {
dev_err(dev, "failed to register extcon: %d\n" , ret);
return ret;
}
for (i = 0 ; i < data->cfg->num_phys; i++) {
struct sun4i_usb_phy *phy = data->phys + i;
char name[32 ];
if (data->cfg->missing_phys & BIT(i))
continue ;
snprintf(name, sizeof (name), "usb%d_vbus" , i);
phy->vbus = devm_regulator_get_optional(dev, name);
if (IS_ERR(phy->vbus)) {
if (PTR_ERR(phy->vbus) == -EPROBE_DEFER) {
dev_err(dev,
"Couldn't get regulator %s... Deferring probe\n" ,
name);
return -EPROBE_DEFER;
}
phy->vbus = NULL;
}
if (data->cfg->dedicated_clocks)
snprintf(name, sizeof (name), "usb%d_phy" , i);
else
strscpy(name, "usb_phy" , sizeof (name));
phy->clk = devm_clk_get(dev, name);
if (IS_ERR(phy->clk)) {
dev_err(dev, "failed to get clock %s\n" , name);
return PTR_ERR(phy->clk);
}
/* The first PHY is always tied to OTG, and never HSIC */
if (data->cfg->hsic_index && i == data->cfg->hsic_index) {
/* HSIC needs secondary clock */
snprintf(name, sizeof (name), "usb%d_hsic_12M" , i);
phy->clk2 = devm_clk_get(dev, name);
if (IS_ERR(phy->clk2)) {
dev_err(dev, "failed to get clock %s\n" , name);
return PTR_ERR(phy->clk2);
}
} else {
snprintf(name, sizeof (name), "pmu%d_clk" , i);
phy->clk2 = devm_clk_get_optional(dev, name);
if (IS_ERR(phy->clk2)) {
dev_err(dev, "failed to get clock %s\n" , name);
return PTR_ERR(phy->clk2);
}
}
snprintf(name, sizeof (name), "usb%d_reset" , i);
phy->reset = devm_reset_control_get(dev, name);
if (IS_ERR(phy->reset)) {
dev_err(dev, "failed to get reset %s\n" , name);
return PTR_ERR(phy->reset);
}
if (i || data->cfg->phy0_dual_route) { /* No pmu for musb */
snprintf(name, sizeof (name), "pmu%d" , i);
phy->pmu = devm_platform_ioremap_resource_byname(pdev, name);
if (IS_ERR(phy->pmu))
return PTR_ERR(phy->pmu);
}
phy->phy = devm_phy_create(dev, NULL, &sun4i_usb_phy_ops);
if (IS_ERR(phy->phy)) {
dev_err(dev, "failed to create PHY %d\n" , i);
return PTR_ERR(phy->phy);
}
phy->index = i;
phy_set_drvdata(phy->phy, &data->phys[i]);
}
data->id_det_irq = gpiod_to_irq(data->id_det_gpio);
if (data->id_det_irq > 0 ) {
ret = devm_request_irq(dev, data->id_det_irq,
sun4i_usb_phy0_id_vbus_det_irq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"usb0-id-det" , data);
if (ret) {
dev_err(dev, "Err requesting id-det-irq: %d\n" , ret);
return ret;
}
}
data->vbus_det_irq = gpiod_to_irq(data->vbus_det_gpio);
if (data->vbus_det_irq > 0 ) {
ret = devm_request_irq(dev, data->vbus_det_irq,
sun4i_usb_phy0_id_vbus_det_irq,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"usb0-vbus-det" , data);
if (ret) {
dev_err(dev, "Err requesting vbus-det-irq: %d\n" , ret);
data->vbus_det_irq = -1 ;
sun4i_usb_phy_remove(pdev); /* Stop detect work */
return ret;
}
}
if (data->vbus_power_supply) {
data->vbus_power_nb.notifier_call = sun4i_usb_phy0_vbus_notify;
data->vbus_power_nb.priority = 0 ;
ret = power_supply_reg_notifier(&data->vbus_power_nb);
if (ret) {
sun4i_usb_phy_remove(pdev); /* Stop detect work */
return ret;
}
data->vbus_power_nb_registered = true ;
}
phy_provider = devm_of_phy_provider_register(dev, sun4i_usb_phy_xlate);
if (IS_ERR(phy_provider)) {
sun4i_usb_phy_remove(pdev); /* Stop detect work */
return PTR_ERR(phy_provider);
}
dev_dbg(dev, "successfully loaded\n" );
return 0 ;
}
static const struct sun4i_usb_phy_cfg suniv_f1c100s_cfg = {
.num_phys = 1 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = true ,
};
static const struct sun4i_usb_phy_cfg sun4i_a10_cfg = {
.num_phys = 3 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = false ,
};
static const struct sun4i_usb_phy_cfg sun5i_a13_cfg = {
.num_phys = 2 ,
.disc_thresh = 2 ,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = false ,
};
static const struct sun4i_usb_phy_cfg sun6i_a31_cfg = {
.num_phys = 3 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = true ,
.poll_vbusen = true ,
};
static const struct sun4i_usb_phy_cfg sun7i_a20_cfg = {
.num_phys = 3 ,
.disc_thresh = 2 ,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = false ,
};
static const struct sun4i_usb_phy_cfg sun8i_a23_cfg = {
.num_phys = 2 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A10,
.dedicated_clocks = true ,
.poll_vbusen = true ,
};
static const struct sun4i_usb_phy_cfg sun8i_a33_cfg = {
.num_phys = 2 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true ,
.poll_vbusen = true ,
};
static const struct sun4i_usb_phy_cfg sun8i_a83t_cfg = {
.num_phys = 3 ,
.hsic_index = 2 ,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true ,
.siddq_in_base = true ,
};
static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = {
.num_phys = 4 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true ,
.hci_phy_ctl_clear = PHY_CTL_H3_SIDDQ,
.phy0_dual_route = true ,
};
static const struct sun4i_usb_phy_cfg sun8i_r40_cfg = {
.num_phys = 3 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true ,
.hci_phy_ctl_clear = PHY_CTL_H3_SIDDQ,
.phy0_dual_route = true ,
};
static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg = {
.num_phys = 1 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true ,
.hci_phy_ctl_clear = PHY_CTL_H3_SIDDQ,
.phy0_dual_route = true ,
};
static const struct sun4i_usb_phy_cfg sun20i_d1_cfg = {
.num_phys = 2 ,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true ,
.hci_phy_ctl_clear = PHY_CTL_SIDDQ,
.phy0_dual_route = true ,
.siddq_in_base = true ,
};
static const struct sun4i_usb_phy_cfg sun50i_a64_cfg = {
.num_phys = 2 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true ,
.hci_phy_ctl_clear = PHY_CTL_H3_SIDDQ,
.phy0_dual_route = true ,
};
static const struct sun4i_usb_phy_cfg sun50i_h6_cfg = {
.num_phys = 4 ,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true ,
.phy0_dual_route = true ,
.missing_phys = BIT(1 ) | BIT(2 ),
.siddq_in_base = true ,
};
static const struct sun4i_usb_phy_cfg sun50i_h616_cfg = {
.num_phys = 4 ,
.disc_thresh = 3 ,
.phyctl_offset = REG_PHYCTL_A33,
.dedicated_clocks = true ,
.phy0_dual_route = true ,
.hci_phy_ctl_clear = PHY_CTL_SIDDQ,
.needs_phy2_siddq = true ,
.siddq_in_base = true ,
};
static const struct of_device_id sun4i_usb_phy_of_match[] = {
{ .compatible = "allwinner,sun4i-a10-usb-phy" , .data = &sun4i_a10_cfg },
{ .compatible = "allwinner,sun5i-a13-usb-phy" , .data = &sun5i_a13_cfg },
{ .compatible = "allwinner,sun6i-a31-usb-phy" , .data = &sun6i_a31_cfg },
{ .compatible = "allwinner,sun7i-a20-usb-phy" , .data = &sun7i_a20_cfg },
{ .compatible = "allwinner,sun8i-a23-usb-phy" , .data = &sun8i_a23_cfg },
{ .compatible = "allwinner,sun8i-a33-usb-phy" , .data = &sun8i_a33_cfg },
{ .compatible = "allwinner,sun8i-a83t-usb-phy" , .data = &sun8i_a83t_cfg },
{ .compatible = "allwinner,sun8i-h3-usb-phy" , .data = &sun8i_h3_cfg },
{ .compatible = "allwinner,sun8i-r40-usb-phy" , .data = &sun8i_r40_cfg },
{ .compatible = "allwinner,sun8i-v3s-usb-phy" , .data = &sun8i_v3s_cfg },
{ .compatible = "allwinner,sun20i-d1-usb-phy" , .data = &sun20i_d1_cfg },
{ .compatible = "allwinner,sun50i-a64-usb-phy" ,
.data = &sun50i_a64_cfg},
{ .compatible = "allwinner,sun50i-h6-usb-phy" , .data = &sun50i_h6_cfg },
{ .compatible = "allwinner,sun50i-h616-usb-phy" , .data = &sun50i_h616_cfg },
{ .compatible = "allwinner,suniv-f1c100s-usb-phy" ,
.data = &suniv_f1c100s_cfg },
{ },
};
MODULE_DEVICE_TABLE(of, sun4i_usb_phy_of_match);
static struct platform_driver sun4i_usb_phy_driver = {
.probe = sun4i_usb_phy_probe,
.remove = sun4i_usb_phy_remove,
.driver = {
.of_match_table= sun4i_usb_phy_of_match,
.name = "sun4i-usb-phy" ,
}
};
module_platform_driver(sun4i_usb_phy_driver);
MODULE_DESCRIPTION("Allwinner sun4i USB phy driver" );
MODULE_AUTHOR("Hans de Goede <hdegoede@redhat.com>" );
MODULE_LICENSE("GPL v2" );
Messung V0.5 in Prozent C=96 H=100 G=97
¤ Die Informationen auf dieser Webseite wurden
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(vorverarbeitet am 2026-09-28)
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