usb: renesas_usbhs: add R-Car Gen. 2 init and power control
In preparation for DT conversion to reduce reliance on platform device
callbacks.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
diff --git a/drivers/usb/renesas_usbhs/common.c b/drivers/usb/renesas_usbhs/common.c
index 17267b0..1b9bf8d 100644
--- a/drivers/usb/renesas_usbhs/common.c
+++ b/drivers/usb/renesas_usbhs/common.c
@@ -15,12 +15,14 @@
*
*/
#include <linux/err.h>
+#include <linux/gpio.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/pm_runtime.h>
#include <linux/slab.h>
#include <linux/sysfs.h>
#include "common.h"
+#include "rcar2.h"
/*
* image of renesas_usbhs
@@ -284,6 +286,8 @@
/*
* platform default param
*/
+
+/* commonly used on old SH-Mobile SoCs */
static u32 usbhsc_default_pipe_type[] = {
USB_ENDPOINT_XFER_CONTROL,
USB_ENDPOINT_XFER_ISOC,
@@ -297,6 +301,26 @@
USB_ENDPOINT_XFER_INT,
};
+/* commonly used on newer SH-Mobile and R-Car SoCs */
+static u32 usbhsc_new_pipe_type[] = {
+ USB_ENDPOINT_XFER_CONTROL,
+ USB_ENDPOINT_XFER_ISOC,
+ USB_ENDPOINT_XFER_ISOC,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_INT,
+ USB_ENDPOINT_XFER_INT,
+ USB_ENDPOINT_XFER_INT,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+ USB_ENDPOINT_XFER_BULK,
+};
+
/*
* power control
*/
@@ -423,8 +447,7 @@
int ret;
/* check platform information */
- if (!info ||
- !info->platform_callback.get_id) {
+ if (!info) {
dev_err(&pdev->dev, "no platform information\n");
return -EINVAL;
}
@@ -451,13 +474,32 @@
/*
* care platform info
*/
- memcpy(&priv->pfunc,
- &info->platform_callback,
- sizeof(struct renesas_usbhs_platform_callback));
+
memcpy(&priv->dparam,
&info->driver_param,
sizeof(struct renesas_usbhs_driver_param));
+ switch (priv->dparam.type) {
+ case USBHS_TYPE_R8A7790:
+ case USBHS_TYPE_R8A7791:
+ priv->pfunc = usbhs_rcar2_ops;
+ if (!priv->dparam.pipe_type) {
+ priv->dparam.pipe_type = usbhsc_new_pipe_type;
+ priv->dparam.pipe_size =
+ ARRAY_SIZE(usbhsc_new_pipe_type);
+ }
+ break;
+ default:
+ if (!info->platform_callback.get_id) {
+ dev_err(&pdev->dev, "no platform callbacks");
+ return -EINVAL;
+ }
+ memcpy(&priv->pfunc,
+ &info->platform_callback,
+ sizeof(struct renesas_usbhs_platform_callback));
+ break;
+ }
+
/* set driver callback functions for platform */
dfunc = &info->driver_callback;
dfunc->notify_hotplug = usbhsc_drvcllbck_notify_hotplug;
@@ -507,6 +549,20 @@
*/
usbhs_sys_clock_ctrl(priv, 0);
+ /* check GPIO determining if USB function should be enabled */
+ if (priv->dparam.enable_gpio) {
+ gpio_request_one(priv->dparam.enable_gpio, GPIOF_IN, NULL);
+ ret = !gpio_get_value(priv->dparam.enable_gpio);
+ gpio_free(priv->dparam.enable_gpio);
+ if (ret) {
+ dev_warn(&pdev->dev,
+ "USB function not selected (GPIO %d)\n",
+ priv->dparam.enable_gpio);
+ ret = -ENOTSUPP;
+ goto probe_end_mod_exit;
+ }
+ }
+
/*
* platform call
*