Skip to content

L
linux
Commit b189a211 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Felipe Balbi
Browse files
Options

usb: phy: Remove the phy-rcar-gen2-usb driver 

The phy-rcar-gen2-usb driver, which supports legacy platform data only,
is no longer used since commit a483dcbf ("ARM: shmobile: lager:
Remove legacy board support").

This driver was superseded by the DT-only phy-rcar-gen2 driver, which
was introduced in commit 1233f59f ("phy: Renesas R-Car Gen2 PHY
driver").
Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent 44e42ae3
Hide whitespace changes
Inline Side-by-side
Showing with 0 additions and 282 deletions
drivers/usb/phy/Kconfig
View file @ b189a211
......@@ -187,19 +187,6 @@ config USB_RCAR_PHY
To compile this driver as a module, choose M here: the
module will be called phy-rcar-usb.
config USB_RCAR_GEN2_PHY
tristate "Renesas R-Car Gen2 USB PHY support"
depends on ARCH_R8A7790 || ARCH_R8A7791 || COMPILE_TEST
select USB_PHY
help
Say Y here to add support for the Renesas R-Car Gen2 USB PHY driver.
It is typically used to control internal USB PHY for USBHS,
and to configure shared USB channels 0 and 2.
This driver supports R8A7790 and R8A7791.
To compile this driver as a module, choose M here: the
module will be called phy-rcar-gen2-usb.
config USB_ULPI
bool "Generic ULPI Transceiver Driver"
depends on ARM || ARM64
......
drivers/usb/phy/Makefile
View file @ b189a211
......@@ -23,7 +23,6 @@ obj-$(CONFIG_USB_MSM_OTG) += phy-msm-usb.o
obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o
obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o
obj-$(CONFIG_USB_RCAR_PHY) += phy-rcar-usb.o
obj-$(CONFIG_USB_RCAR_GEN2_PHY) += phy-rcar-gen2-usb.o
obj-$(CONFIG_USB_ULPI) += phy-ulpi.o
obj-$(CONFIG_USB_ULPI_VIEWPORT) += phy-ulpi-viewport.o
obj-$(CONFIG_KEYSTONE_USB_PHY) += phy-keystone.o
drivers/usb/phy/phy-rcar-gen2-usb.c deleted 100644 → 0
View file @ 44e42ae3
/*
* Renesas R-Car Gen2 USB phy driver
*
* Copyright (C) 2013 Renesas Solutions Corp.
* Copyright (C) 2013 Cogent Embedded, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/platform_data/usb-rcar-gen2-phy.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/usb/otg.h>
struct rcar_gen2_usb_phy_priv {
struct usb_phy phy;
void __iomem *base;
struct clk *clk;
spinlock_t lock;
int usecount;
u32 ugctrl2;
};
#define usb_phy_to_priv(p) container_of(p, struct rcar_gen2_usb_phy_priv, phy)
/* Low Power Status register */
#define USBHS_LPSTS_REG 0x02
#define USBHS_LPSTS_SUSPM (1 << 14)
/* USB General control register */
#define USBHS_UGCTRL_REG 0x80
#define USBHS_UGCTRL_CONNECT (1 << 2)
#define USBHS_UGCTRL_PLLRESET (1 << 0)
/* USB General control register 2 */
#define USBHS_UGCTRL2_REG 0x84
#define USBHS_UGCTRL2_USB0_PCI (1 << 4)
#define USBHS_UGCTRL2_USB0_HS (3 << 4)
#define USBHS_UGCTRL2_USB2_PCI (0 << 31)
#define USBHS_UGCTRL2_USB2_SS (1 << 31)
/* USB General status register */
#define USBHS_UGSTS_REG 0x88
#define USBHS_UGSTS_LOCK (1 << 8)
/* Enable USBHS internal phy */
static int __rcar_gen2_usbhs_phy_enable(void __iomem *base)
{
u32 val;
int i;
/* USBHS PHY power on */
val = ioread32(base + USBHS_UGCTRL_REG);
val &= ~USBHS_UGCTRL_PLLRESET;
iowrite32(val, base + USBHS_UGCTRL_REG);
val = ioread16(base + USBHS_LPSTS_REG);
val |= USBHS_LPSTS_SUSPM;
iowrite16(val, base + USBHS_LPSTS_REG);
for (i = 0; i < 20; i++) {
val = ioread32(base + USBHS_UGSTS_REG);
if ((val & USBHS_UGSTS_LOCK) == USBHS_UGSTS_LOCK) {
val = ioread32(base + USBHS_UGCTRL_REG);
val |= USBHS_UGCTRL_CONNECT;
iowrite32(val, base + USBHS_UGCTRL_REG);
return 0;
}
udelay(1);
}
/* Timed out waiting for the PLL lock */
return -ETIMEDOUT;
}
/* Disable USBHS internal phy */
static int __rcar_gen2_usbhs_phy_disable(void __iomem *base)
{
u32 val;
/* USBHS PHY power off */
val = ioread32(base + USBHS_UGCTRL_REG);
val &= ~USBHS_UGCTRL_CONNECT;
iowrite32(val, base + USBHS_UGCTRL_REG);
val = ioread16(base + USBHS_LPSTS_REG);
val &= ~USBHS_LPSTS_SUSPM;
iowrite16(val, base + USBHS_LPSTS_REG);
val = ioread32(base + USBHS_UGCTRL_REG);
val |= USBHS_UGCTRL_PLLRESET;
iowrite32(val, base + USBHS_UGCTRL_REG);
return 0;
}
/* Setup USB channels */
static void __rcar_gen2_usb_phy_init(struct rcar_gen2_usb_phy_priv *priv)
{
u32 val;
clk_prepare_enable(priv->clk);
/* Set USB channels in the USBHS UGCTRL2 register */
val = ioread32(priv->base + USBHS_UGCTRL2_REG);
val &= ~(USBHS_UGCTRL2_USB0_HS | USBHS_UGCTRL2_USB2_SS);
val |= priv->ugctrl2;
iowrite32(val, priv->base + USBHS_UGCTRL2_REG);
}
/* Shutdown USB channels */
static void __rcar_gen2_usb_phy_shutdown(struct rcar_gen2_usb_phy_priv *priv)
{
__rcar_gen2_usbhs_phy_disable(priv->base);
clk_disable_unprepare(priv->clk);
}
static int rcar_gen2_usb_phy_set_suspend(struct usb_phy *phy, int suspend)
{
struct rcar_gen2_usb_phy_priv *priv = usb_phy_to_priv(phy);
unsigned long flags;
int retval;
spin_lock_irqsave(&priv->lock, flags);
retval = suspend ? __rcar_gen2_usbhs_phy_disable(priv->base) :
__rcar_gen2_usbhs_phy_enable(priv->base);
spin_unlock_irqrestore(&priv->lock, flags);
return retval;
}
static int rcar_gen2_usb_phy_init(struct usb_phy *phy)
{
struct rcar_gen2_usb_phy_priv *priv = usb_phy_to_priv(phy);
unsigned long flags;
spin_lock_irqsave(&priv->lock, flags);
/*
* Enable the clock and setup USB channels
* if it's the first user
*/
if (!priv->usecount++)
__rcar_gen2_usb_phy_init(priv);
spin_unlock_irqrestore(&priv->lock, flags);
return 0;
}
static void rcar_gen2_usb_phy_shutdown(struct usb_phy *phy)
{
struct rcar_gen2_usb_phy_priv *priv = usb_phy_to_priv(phy);
unsigned long flags;
spin_lock_irqsave(&priv->lock, flags);
if (!priv->usecount) {
dev_warn(phy->dev, "Trying to disable phy with 0 usecount\n");
goto out;
}
/* Disable everything if it's the last user */
if (!--priv->usecount)
__rcar_gen2_usb_phy_shutdown(priv);
out:
spin_unlock_irqrestore(&priv->lock, flags);
}
static int rcar_gen2_usb_phy_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct rcar_gen2_phy_platform_data *pdata;
struct rcar_gen2_usb_phy_priv *priv;
struct resource *res;
void __iomem *base;
struct clk *clk;
int retval;
pdata = dev_get_platdata(dev);
if (!pdata) {
dev_err(dev, "No platform data\n");
return -EINVAL;
}
clk = devm_clk_get(dev, "usbhs");
if (IS_ERR(clk)) {
dev_err(dev, "Can't get the clock\n");
return PTR_ERR(clk);
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(dev, res);
if (IS_ERR(base))
return PTR_ERR(base);
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
spin_lock_init(&priv->lock);
priv->clk = clk;
priv->base = base;
priv->ugctrl2 = pdata->chan0_pci ?
USBHS_UGCTRL2_USB0_PCI : USBHS_UGCTRL2_USB0_HS;
priv->ugctrl2 |= pdata->chan2_pci ?
USBHS_UGCTRL2_USB2_PCI : USBHS_UGCTRL2_USB2_SS;
priv->phy.dev = dev;
priv->phy.label = dev_name(dev);
priv->phy.init = rcar_gen2_usb_phy_init;
priv->phy.shutdown = rcar_gen2_usb_phy_shutdown;
priv->phy.set_suspend = rcar_gen2_usb_phy_set_suspend;
retval = usb_add_phy_dev(&priv->phy);
if (retval < 0) {
dev_err(dev, "Failed to add USB phy\n");
return retval;
}
platform_set_drvdata(pdev, priv);
return retval;
}
static int rcar_gen2_usb_phy_remove(struct platform_device *pdev)
{
struct rcar_gen2_usb_phy_priv *priv = platform_get_drvdata(pdev);
usb_remove_phy(&priv->phy);
return 0;
}
static struct platform_driver rcar_gen2_usb_phy_driver = {
.driver = {
.name = "usb_phy_rcar_gen2",
},
.probe = rcar_gen2_usb_phy_probe,
.remove = rcar_gen2_usb_phy_remove,
};
module_platform_driver(rcar_gen2_usb_phy_driver);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("Renesas R-Car Gen2 USB phy");
MODULE_AUTHOR("Valentine Barshak <valentine.barshak@cogentembedded.com>");
include/linux/platform_data/usb-rcar-gen2-phy.h deleted 100644 → 0
View file @ 44e42ae3
/*
* Copyright (C) 2013 Renesas Solutions Corp.
* Copyright (C) 2013 Cogent Embedded, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef __USB_RCAR_GEN2_PHY_H
#define __USB_RCAR_GEN2_PHY_H
#include <linux/types.h>
struct rcar_gen2_phy_platform_data {
/* USB channel 0 configuration */
bool chan0_pci:1; /* true: PCI USB host 0, false: USBHS */
/* USB channel 2 configuration */
bool chan2_pci:1; /* true: PCI USB host 2, false: USBSS */
};
#endif
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