The RZ/A2 is similar to the R-Car Gen3 with some small differences.
Signed-off-by: Chris Brandt <chris.brandt@xxxxxxxxxxx>
---
v2:
* combined RZA1 and RZA2 for fifo setting
* added braces to make code easier to read
* fixed and clean up usbhs_rza2_power_ctrl()
---
drivers/usb/renesas_usbhs/Makefile | 2 +-
drivers/usb/renesas_usbhs/common.c | 12 +++++-
drivers/usb/renesas_usbhs/rza.h | 1 +
drivers/usb/renesas_usbhs/rza2.c | 79 ++++++++++++++++++++++++++++++++++++++
include/linux/usb/renesas_usbhs.h | 1 +
5 files changed, 93 insertions(+), 2 deletions(-)
create mode 100644 drivers/usb/renesas_usbhs/rza2.c
diff --git a/drivers/usb/renesas_usbhs/Makefile b/drivers/usb/renesas_usbhs/Makefile
index 5c5b51bb48ef..a1fed56b0957 100644
--- a/drivers/usb/renesas_usbhs/Makefile
+++ b/drivers/usb/renesas_usbhs/Makefile
@@ -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
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 820636fc4dc9..35d2298c03a0 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -582,6 +582,10 @@ static const struct of_device_id usbhs_of_match[] = {
.compatible = "renesas,rza1-usbhs",
.data = (void *)USBHS_TYPE_RZA1,
},
+ {
+ .compatible = "renesas,rza2-usbhs",
+ .data = (void *)USBHS_TYPE_RZA2,
+ },
{ },
};
MODULE_DEVICE_TABLE(of, usbhs_of_match);
@@ -614,7 +618,8 @@ static struct renesas_usbhs_platform_info *usbhs_parse_dt(struct device *dev)
dparam->pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
}
- if (dparam->type == USBHS_TYPE_RZA1) {
+ if (dparam->type == USBHS_TYPE_RZA1 ||
+ dparam->type == USBHS_TYPE_RZA2) {
dparam->pipe_configs = usbhsc_new_pipe;
dparam->pipe_size = ARRAY_SIZE(usbhsc_new_pipe);
}
@@ -688,6 +693,11 @@ static int usbhs_probe(struct platform_device *pdev)
case USBHS_TYPE_RZA1:
priv->pfunc = usbhs_rza1_ops;
break;
+ case USBHS_TYPE_RZA2:
+ priv->pfunc = usbhs_rza2_ops;
+ usbhsc_flags_set(priv, USBHSF_HAS_CNEN);
+ usbhsc_flags_set(priv, USBHSF_CFIFO_BYTE_ADDR);
+ break;
default:
if (!info->platform_callback.get_id) {
dev_err(&pdev->dev, "no platform callbacks");
diff --git a/drivers/usb/renesas_usbhs/rza.h b/drivers/usb/renesas_usbhs/rza.h
index ca917ca54f6d..073a53d1d442 100644
--- a/drivers/usb/renesas_usbhs/rza.h
+++ b/drivers/usb/renesas_usbhs/rza.h
@@ -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;
diff --git a/drivers/usb/renesas_usbhs/rza2.c b/drivers/usb/renesas_usbhs/rza2.c
new file mode 100644
index 000000000000..a1d9eb2d40cf
--- /dev/null
+++ b/drivers/usb/renesas_usbhs/rza2.c
@@ -0,0 +1,79 @@
+// 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);
+
+ if (IS_ENABLED(CONFIG_GENERIC_PHY)) {
+ struct phy *phy = phy_get(&pdev->dev, "usb");
+
+ if (IS_ERR(phy))
+ return PTR_ERR(phy);
+
+ priv->phy = phy;
+ return 0;
+ }
+ return -ENXIO;
+}
+
+static int usbhs_rza2_hardware_exit(struct platform_device *pdev)
+{
+ struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev);
+
+ if (priv->phy) {
+ 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,
+};
diff --git a/include/linux/usb/renesas_usbhs.h b/include/linux/usb/renesas_usbhs.h
index 53924f8e840c..39604c8b1eed 100644
--- a/include/linux/usb/renesas_usbhs.h
+++ b/include/linux/usb/renesas_usbhs.h
@@ -196,6 +196,7 @@ 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:
--
2.16.1
