Skip to content

L
linux
Commit 4756f35f authored by Alex Elder's avatar Alex Elder Committed by Greg Kroah-Hartman
Browse files
Options

usb: phy: remove phy-qcom-8x16-usb.c 

No Qualcomm SoC requires the "phy-qcom-8x16-usb.c" USB phy driver
support any more, so remove the code.
Suggested-by: default avatarStephen Boyd <sboyd@codeaurora.org>
Signed-off-by: default avatarAlex Elder <elder@linaro.org>
Acked-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: default avatarAndy Gross <andy.gross@linaro.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent a170a1e9
Hide whitespace changes
Inline Side-by-side
Showing with 0 additions and 381 deletions
drivers/usb/phy/Kconfig
View file @ 4756f35f
......@@ -137,20 +137,6 @@ config USB_ISP1301
To compile this driver as a module, choose M here: the
module will be called phy-isp1301.
config USB_QCOM_8X16_PHY
tristate "Qualcomm APQ8016/MSM8916 on-chip USB PHY controller support"
depends on ARCH_QCOM || COMPILE_TEST
depends on RESET_CONTROLLER
select USB_PHY
select USB_ULPI_VIEWPORT
help
Enable this to support the USB transceiver on Qualcomm 8x16 chipsets.
It handles PHY initialization, clock management, power management,
and workarounds required after resetting the hardware.
To compile this driver as a module, choose M here: the
module will be called phy-qcom-8x16-usb.
config USB_MV_OTG
tristate "Marvell USB OTG support"
depends on USB_EHCI_MV && USB_MV_UDC && PM && USB_OTG
......
drivers/usb/phy/Makefile
View file @ 4756f35f
......@@ -18,7 +18,6 @@ obj-$(CONFIG_TWL6030_USB) += phy-twl6030-usb.o
obj-$(CONFIG_USB_EHCI_TEGRA) += phy-tegra-usb.o
obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio-vbus-usb.o
obj-$(CONFIG_USB_ISP1301) += phy-isp1301.o
obj-$(CONFIG_USB_QCOM_8X16_PHY) += phy-qcom-8x16-usb.o
obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o
obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o
obj-$(CONFIG_USB_ULPI) += phy-ulpi.o
......
drivers/usb/phy/phy-qcom-8x16-usb.c deleted 100644 → 0
View file @ a170a1e9
/*
* Copyright (c) 2015, Linaro Limited
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* only version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/err.h>
#include <linux/extcon.h>
#include <linux/gpio/consumer.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <linux/regulator/consumer.h>
#include <linux/reset.h>
#include <linux/slab.h>
#include <linux/usb.h>
#include <linux/usb/ulpi.h>
#define HSPHY_AHBBURST 0x0090
#define HSPHY_AHBMODE 0x0098
#define HSPHY_GENCONFIG 0x009c
#define HSPHY_GENCONFIG_2 0x00a0
#define HSPHY_USBCMD 0x0140
#define HSPHY_ULPI_VIEWPORT 0x0170
#define HSPHY_CTRL 0x0240
#define HSPHY_TXFIFO_IDLE_FORCE_DIS BIT(4)
#define HSPHY_SESS_VLD_CTRL_EN BIT(7)
#define HSPHY_POR_ASSERT BIT(0)
#define HSPHY_RETEN BIT(1)
#define HSPHY_SESS_VLD_CTRL BIT(25)
#define ULPI_PWR_CLK_MNG_REG 0x88
#define ULPI_PWR_OTG_COMP_DISABLE BIT(0)
#define ULPI_MISC_A 0x96
#define ULPI_MISC_A_VBUSVLDEXTSEL BIT(1)
#define ULPI_MISC_A_VBUSVLDEXT BIT(0)
#define HSPHY_3P3_MIN 3050000 /* uV */
#define HSPHY_3P3_MAX 3300000 /* uV */
#define HSPHY_1P8_MIN 1800000 /* uV */
#define HSPHY_1P8_MAX 1800000 /* uV */
#define HSPHY_VDD_MIN 5
#define HSPHY_VDD_MAX 7
struct phy_8x16 {
struct usb_phy phy;
void __iomem *regs;
struct clk *core_clk;
struct clk *iface_clk;
struct regulator_bulk_data regulator[3];
struct reset_control *phy_reset;
struct gpio_desc *switch_gpio;
struct notifier_block reboot_notify;
};
static int phy_8x16_notify_connect(struct usb_phy *phy,
enum usb_device_speed speed)
{
struct phy_8x16 *qphy = container_of(phy, struct phy_8x16, phy);
u32 val;
val = ULPI_MISC_A_VBUSVLDEXTSEL | ULPI_MISC_A_VBUSVLDEXT;
usb_phy_io_write(&qphy->phy, val, ULPI_SET(ULPI_MISC_A));
val = readl(qphy->regs + HSPHY_USBCMD);
val |= HSPHY_SESS_VLD_CTRL;
writel(val, qphy->regs + HSPHY_USBCMD);
return 0;
}
static int phy_8x16_notify_disconnect(struct usb_phy *phy,
enum usb_device_speed speed)
{
struct phy_8x16 *qphy = container_of(phy, struct phy_8x16, phy);
u32 val;
val = ULPI_MISC_A_VBUSVLDEXT | ULPI_MISC_A_VBUSVLDEXTSEL;
usb_phy_io_write(&qphy->phy, val, ULPI_CLR(ULPI_MISC_A));
val = readl(qphy->regs + HSPHY_USBCMD);
val &= ~HSPHY_SESS_VLD_CTRL;
writel(val, qphy->regs + HSPHY_USBCMD);
return 0;
}
static int phy_8x16_vbus_on(struct phy_8x16 *qphy)
{
phy_8x16_notify_connect(&qphy->phy, USB_SPEED_UNKNOWN);
/* Switch D+/D- lines to Device connector */
gpiod_set_value_cansleep(qphy->switch_gpio, 0);
return 0;
}
static int phy_8x16_vbus_off(struct phy_8x16 *qphy)
{
phy_8x16_notify_disconnect(&qphy->phy, USB_SPEED_UNKNOWN);
/* Switch D+/D- lines to USB HUB */
gpiod_set_value_cansleep(qphy->switch_gpio, 1);
return 0;
}
static int phy_8x16_vbus_notify(struct notifier_block *nb, unsigned long event,
void *ptr)
{
struct usb_phy *usb_phy = container_of(nb, struct usb_phy, vbus_nb);
struct phy_8x16 *qphy = container_of(usb_phy, struct phy_8x16, phy);
if (event)
phy_8x16_vbus_on(qphy);
else
phy_8x16_vbus_off(qphy);
return NOTIFY_DONE;
}
static int phy_8x16_init(struct usb_phy *phy)
{
struct phy_8x16 *qphy = container_of(phy, struct phy_8x16, phy);
u32 val, init[] = {0x44, 0x6B, 0x24, 0x13};
u32 addr = ULPI_EXT_VENDOR_SPECIFIC;
int idx, state;
for (idx = 0; idx < ARRAY_SIZE(init); idx++)
usb_phy_io_write(phy, init[idx], addr + idx);
reset_control_reset(qphy->phy_reset);
/* Assert USB HSPHY_POR */
val = readl(qphy->regs + HSPHY_CTRL);
val |= HSPHY_POR_ASSERT;
writel(val, qphy->regs + HSPHY_CTRL);
/*
* wait for minimum 10 microseconds as suggested in HPG.
* Use a slightly larger value since the exact value didn't
* work 100% of the time.
*/
usleep_range(12, 15);
/* Deassert USB HSPHY_POR */
val = readl(qphy->regs + HSPHY_CTRL);
val &= ~HSPHY_POR_ASSERT;
writel(val, qphy->regs + HSPHY_CTRL);
usleep_range(10, 15);
writel(0x00, qphy->regs + HSPHY_AHBBURST);
writel(0x08, qphy->regs + HSPHY_AHBMODE);
/* workaround for rx buffer collision issue */
val = readl(qphy->regs + HSPHY_GENCONFIG);
val &= ~HSPHY_TXFIFO_IDLE_FORCE_DIS;
writel(val, qphy->regs + HSPHY_GENCONFIG);
val = readl(qphy->regs + HSPHY_GENCONFIG_2);
val |= HSPHY_SESS_VLD_CTRL_EN;
writel(val, qphy->regs + HSPHY_GENCONFIG_2);
val = ULPI_PWR_OTG_COMP_DISABLE;
usb_phy_io_write(phy, val, ULPI_SET(ULPI_PWR_CLK_MNG_REG));
state = extcon_get_state(qphy->phy.edev, EXTCON_USB);
if (state)
phy_8x16_vbus_on(qphy);
else
phy_8x16_vbus_off(qphy);
val = usb_phy_io_read(&qphy->phy, ULPI_FUNC_CTRL);
val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
val |= ULPI_FUNC_CTRL_OPMODE_NORMAL;
usb_phy_io_write(&qphy->phy, val, ULPI_FUNC_CTRL);
return 0;
}
static void phy_8x16_shutdown(struct usb_phy *phy)
{
u32 val;
/* Put the controller in non-driving mode */
val = usb_phy_io_read(phy, ULPI_FUNC_CTRL);
val &= ~ULPI_FUNC_CTRL_OPMODE_MASK;
val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING;
usb_phy_io_write(phy, val, ULPI_FUNC_CTRL);
}
static int phy_8x16_read_devicetree(struct phy_8x16 *qphy)
{
struct device *dev = qphy->phy.dev;
int ret;
qphy->core_clk = devm_clk_get(dev, "core");
if (IS_ERR(qphy->core_clk))
return PTR_ERR(qphy->core_clk);
qphy->iface_clk = devm_clk_get(dev, "iface");
if (IS_ERR(qphy->iface_clk))
return PTR_ERR(qphy->iface_clk);
qphy->regulator[0].supply = "v3p3";
qphy->regulator[1].supply = "v1p8";
qphy->regulator[2].supply = "vddcx";
ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(qphy->regulator),
qphy->regulator);
if (ret)
return ret;
qphy->phy_reset = devm_reset_control_get(dev, "phy");
if (IS_ERR(qphy->phy_reset))
return PTR_ERR(qphy->phy_reset);
qphy->switch_gpio = devm_gpiod_get_optional(dev, "switch",
GPIOD_OUT_LOW);
return PTR_ERR_OR_ZERO(qphy->switch_gpio);
}
static int phy_8x16_reboot_notify(struct notifier_block *this,
unsigned long code, void *unused)
{
struct phy_8x16 *qphy;
qphy = container_of(this, struct phy_8x16, reboot_notify);
/*
* Ensure that D+/D- lines are routed to uB connector, so
* we could load bootloader/kernel at next reboot_notify
*/
gpiod_set_value_cansleep(qphy->switch_gpio, 0);
return NOTIFY_DONE;
}
static int phy_8x16_probe(struct platform_device *pdev)
{
struct phy_8x16 *qphy;
struct resource *res;
struct usb_phy *phy;
int ret;
qphy = devm_kzalloc(&pdev->dev, sizeof(*qphy), GFP_KERNEL);
if (!qphy)
return -ENOMEM;
platform_set_drvdata(pdev, qphy);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
qphy->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(qphy->regs))
return PTR_ERR(qphy->regs);
phy = &qphy->phy;
phy->dev = &pdev->dev;
phy->label = dev_name(&pdev->dev);
phy->init = phy_8x16_init;
phy->shutdown = phy_8x16_shutdown;
phy->notify_connect = phy_8x16_notify_connect;
phy->notify_disconnect = phy_8x16_notify_disconnect;
phy->io_priv = qphy->regs + HSPHY_ULPI_VIEWPORT;
phy->io_ops = &ulpi_viewport_access_ops;
phy->type = USB_PHY_TYPE_USB2;
phy->vbus_nb.notifier_call = phy_8x16_vbus_notify;
phy->id_nb.notifier_call = NULL;
ret = phy_8x16_read_devicetree(qphy);
if (ret < 0)
return ret;
ret = clk_set_rate(qphy->core_clk, INT_MAX);
if (ret < 0)
dev_dbg(phy->dev, "Can't boost core clock\n");
ret = clk_prepare_enable(qphy->core_clk);
if (ret < 0)
return ret;
ret = clk_prepare_enable(qphy->iface_clk);
if (ret < 0)
goto off_core;
ret = regulator_bulk_enable(ARRAY_SIZE(qphy->regulator),
qphy->regulator);
if (WARN_ON(ret))
goto off_clks;
ret = usb_add_phy_dev(&qphy->phy);
if (ret)
goto off_power;
qphy->reboot_notify.notifier_call = phy_8x16_reboot_notify;
register_reboot_notifier(&qphy->reboot_notify);
return 0;
off_power:
regulator_bulk_disable(ARRAY_SIZE(qphy->regulator), qphy->regulator);
off_clks:
clk_disable_unprepare(qphy->iface_clk);
off_core:
clk_disable_unprepare(qphy->core_clk);
return ret;
}
static int phy_8x16_remove(struct platform_device *pdev)
{
struct phy_8x16 *qphy = platform_get_drvdata(pdev);
unregister_reboot_notifier(&qphy->reboot_notify);
/*
* Ensure that D+/D- lines are routed to uB connector, so
* we could load bootloader/kernel at next reboot_notify
*/
gpiod_set_value_cansleep(qphy->switch_gpio, 0);
usb_remove_phy(&qphy->phy);
clk_disable_unprepare(qphy->iface_clk);
clk_disable_unprepare(qphy->core_clk);
regulator_bulk_disable(ARRAY_SIZE(qphy->regulator), qphy->regulator);
return 0;
}
static const struct of_device_id phy_8x16_dt_match[] = {
{ .compatible = "qcom,usb-8x16-phy" },
{ }
};
MODULE_DEVICE_TABLE(of, phy_8x16_dt_match);
static struct platform_driver phy_8x16_driver = {
.probe = phy_8x16_probe,
.remove = phy_8x16_remove,
.driver = {
.name = "phy-qcom-8x16-usb",
.of_match_table = phy_8x16_dt_match,
},
};
module_platform_driver(phy_8x16_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Qualcomm APQ8016/MSM8916 chipsets USB transceiver driver");
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7