usb: renesas_usbhs: Add support for RZ/A2

The RZ/A2 is similar to the R-Car Gen3 with some small differences.

Signed-off-by: Chris Brandt <chris.brandt@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chris Brandt 2019-05-15 10:20:44 -05:00 committed by Greg Kroah-Hartman
parent f756066990
commit b69dce6341
5 changed files with 90 additions and 1 deletions

View File

@ -5,7 +5,7 @@
obj-$(CONFIG_USB_RENESAS_USBHS) += renesas_usbhs.o
renesas_usbhs-y := common.o mod.o pipe.o fifo.o rcar2.o rcar3.o rza.o
renesas_usbhs-y := common.o mod.o pipe.o fifo.o rcar2.o rcar3.o rza.o rza2.o
ifneq ($(CONFIG_USB_RENESAS_USBHS_HCD),)
renesas_usbhs-y += mod_host.o

View File

@ -571,6 +571,17 @@ static const struct usbhs_of_data rza1_data = {
}
};
static const struct usbhs_of_data rza2_data = {
.platform_callback = &usbhs_rza2_ops,
.param = {
.type = USBHS_TYPE_RZA2,
.has_cnen = 1,
.cfifo_byte_addr = 1,
.pipe_configs = usbhsc_new_pipe,
.pipe_size = ARRAY_SIZE(usbhsc_new_pipe),
}
};
/*
* platform functions
*/
@ -619,6 +630,10 @@ static const struct of_device_id usbhs_of_match[] = {
.compatible = "renesas,rza1-usbhs",
.data = &rza1_data,
},
{
.compatible = "renesas,rza2-usbhs",
.data = &rza2_data,
},
{ },
};
MODULE_DEVICE_TABLE(of, usbhs_of_match);

View File

@ -2,3 +2,4 @@
#include "common.h"
extern const struct renesas_usbhs_platform_callback usbhs_rza1_ops;
extern const struct renesas_usbhs_platform_callback usbhs_rza2_ops;

View File

@ -0,0 +1,72 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Renesas USB driver RZ/A2 initialization and power control
*
* Copyright (C) 2019 Chris Brandt
* Copyright (C) 2019 Renesas Electronics Corporation
*/
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/of_device.h>
#include <linux/phy/phy.h>
#include "common.h"
#include "rza.h"
static int usbhs_rza2_hardware_init(struct platform_device *pdev)
{
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
struct phy *phy = phy_get(&pdev->dev, "usb");
if (IS_ERR(phy))
return PTR_ERR(phy);
priv->phy = phy;
return 0;
}
static int usbhs_rza2_hardware_exit(struct platform_device *pdev)
{
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
phy_put(priv->phy);
priv->phy = NULL;
return 0;
}
static int usbhs_rza2_power_ctrl(struct platform_device *pdev,
void __iomem *base, int enable)
{
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
int retval = 0;
if (!priv->phy)
return -ENODEV;
if (enable) {
retval = phy_init(priv->phy);
usbhs_bset(priv, SUSPMODE, SUSPM, SUSPM);
udelay(100); /* Wait for PLL to become stable */
if (!retval)
retval = phy_power_on(priv->phy);
} else {
usbhs_bset(priv, SUSPMODE, SUSPM, 0);
phy_power_off(priv->phy);
phy_exit(priv->phy);
}
return retval;
}
static int usbhs_rza2_get_id(struct platform_device *pdev)
{
return USBHS_GADGET;
}
const struct renesas_usbhs_platform_callback usbhs_rza2_ops = {
.hardware_init = usbhs_rza2_hardware_init,
.hardware_exit = usbhs_rza2_hardware_exit,
.power_ctrl = usbhs_rza2_power_ctrl,
.get_id = usbhs_rza2_get_id,
};

View File

@ -199,6 +199,7 @@ struct renesas_usbhs_driver_param {
#define USBHS_TYPE_RCAR_GEN3 2
#define USBHS_TYPE_RCAR_GEN3_WITH_PLL 3
#define USBHS_TYPE_RZA1 4
#define USBHS_TYPE_RZA2 5
/*
* option: