[PATCH v3 03/10] usb: cdns3: Moves reusable code to separate module
From: Pawel Laszczak
Date: Thu Nov 19 2020 - 09:15:07 EST
Patch moves common reusable code used by cdns3 and cdnsp driver
to cdns-usb-common library. This library include core.c, drd.c
and host.c files.
Signed-off-by: Pawel Laszczak <pawell@xxxxxxxxxxx>
---
drivers/usb/cdns3/Kconfig | 8 ++++++++
drivers/usb/cdns3/Makefile | 8 +++++---
drivers/usb/cdns3/cdns3-plat.c | 2 ++
drivers/usb/cdns3/core.c | 18 +++++++++++++++---
drivers/usb/cdns3/core.h | 3 +++
drivers/usb/cdns3/drd.c | 3 ++-
6 files changed, 35 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/cdns3/Kconfig b/drivers/usb/cdns3/Kconfig
index 84716d216ae5..58154c0a73ac 100644
--- a/drivers/usb/cdns3/Kconfig
+++ b/drivers/usb/cdns3/Kconfig
@@ -1,8 +1,15 @@
+config CDNS_USB_COMMON
+ tristate
+
+config CDNS_USB_HOST
+ bool
+
config USB_CDNS3
tristate "Cadence USB3 Dual-Role Controller"
depends on USB_SUPPORT && (USB || USB_GADGET) && HAS_DMA
select USB_XHCI_PLATFORM if USB_XHCI_HCD
select USB_ROLE_SWITCH
+ select CDNS_USB_COMMON
help
Say Y here if your system has a Cadence USB3 dual-role controller.
It supports: dual-role switch, Host-only, and Peripheral-only.
@@ -25,6 +32,7 @@ config USB_CDNS3_GADGET
config USB_CDNS3_HOST
bool "Cadence USB3 host controller"
depends on USB=y || USB=USB_CDNS3
+ select CDNS_USB_HOST
help
Say Y here to enable host controller functionality of the
Cadence driver.
diff --git a/drivers/usb/cdns3/Makefile b/drivers/usb/cdns3/Makefile
index a1fe9612053a..16df87abf3cf 100644
--- a/drivers/usb/cdns3/Makefile
+++ b/drivers/usb/cdns3/Makefile
@@ -2,17 +2,19 @@
# define_trace.h needs to know how to find our header
CFLAGS_trace.o := -I$(src)
-cdns3-y := cdns3-plat.o core.o drd.o
+cdns-usb-common-y := core.o drd.o
+cdns3-y := cdns3-plat.o
obj-$(CONFIG_USB_CDNS3) += cdns3.o
+obj-$(CONFIG_CDNS_USB_COMMON) += cdns-usb-common.o
+
+cdns-usb-common-$(CONFIG_CDNS_USB_HOST) += host.o
cdns3-$(CONFIG_USB_CDNS3_GADGET) += gadget.o ep0.o
ifneq ($(CONFIG_USB_CDNS3_GADGET),)
cdns3-$(CONFIG_TRACING) += trace.o
endif
-cdns3-$(CONFIG_USB_CDNS3_HOST) += host.o
-
obj-$(CONFIG_USB_CDNS3_PCI_WRAP) += cdns3-pci-wrap.o
obj-$(CONFIG_USB_CDNS3_TI) += cdns3-ti.o
obj-$(CONFIG_USB_CDNS3_IMX) += cdns3-imx.o
diff --git a/drivers/usb/cdns3/cdns3-plat.c b/drivers/usb/cdns3/cdns3-plat.c
index d538b3b2657f..ddebb1511c56 100644
--- a/drivers/usb/cdns3/cdns3-plat.c
+++ b/drivers/usb/cdns3/cdns3-plat.c
@@ -18,6 +18,7 @@
#include <linux/pm_runtime.h>
#include "core.h"
+#include "gadget-export.h"
static int set_phy_power_on(struct cdns3 *cdns)
{
@@ -134,6 +135,7 @@ static int cdns3_plat_probe(struct platform_device *pdev)
if (ret)
goto err_phy_power_on;
+ cdns->gadget_init = cdns3_gadget_init;
ret = cdns3_init(cdns);
if (ret)
goto err_cdns_init;
diff --git a/drivers/usb/cdns3/core.c b/drivers/usb/cdns3/core.c
index 758fd5d67196..4fedf32855af 100644
--- a/drivers/usb/cdns3/core.c
+++ b/drivers/usb/cdns3/core.c
@@ -19,10 +19,8 @@
#include <linux/io.h>
#include <linux/pm_runtime.h>
-#include "gadget.h"
#include "core.h"
#include "host-export.h"
-#include "gadget-export.h"
#include "drd.h"
static int cdns3_idle_init(struct cdns3 *cdns);
@@ -147,7 +145,11 @@ static int cdns3_core_init_role(struct cdns3 *cdns)
}
if (dr_mode == USB_DR_MODE_OTG || dr_mode == USB_DR_MODE_PERIPHERAL) {
- ret = cdns3_gadget_init(cdns);
+ if (cdns->gadget_init)
+ ret = cdns->gadget_init(cdns);
+ else
+ ret = -ENXIO;
+
if (ret) {
dev_err(dev, "Device initialization failed with %d\n",
ret);
@@ -473,6 +475,7 @@ int cdns3_init(struct cdns3 *cdns)
return ret;
}
+EXPORT_SYMBOL_GPL(cdns3_init);
/**
* cdns3_remove - unbind drd driver and clean up
@@ -487,6 +490,7 @@ int cdns3_remove(struct cdns3 *cdns)
return 0;
}
+EXPORT_SYMBOL_GPL(cdns3_remove);
#ifdef CONFIG_PM_SLEEP
int cdns3_suspend(struct cdns3 *cdns)
@@ -505,6 +509,7 @@ int cdns3_suspend(struct cdns3 *cdns)
return 0;
}
+EXPORT_SYMBOL_GPL(cdns3_suspend);
int cdns3_resume(struct cdns3 *cdns, u8 set_active)
{
@@ -521,4 +526,11 @@ int cdns3_resume(struct cdns3 *cdns, u8 set_active)
return 0;
}
+EXPORT_SYMBOL_GPL(cdns3_resume);
#endif /* CONFIG_PM_SLEEP */
+
+MODULE_AUTHOR("Peter Chen <peter.chen@xxxxxxx>");
+MODULE_AUTHOR("Pawel Laszczak <pawell@xxxxxxxxxxx>");
+MODULE_AUTHOR("Roger Quadros <rogerq@xxxxxx>");
+MODULE_DESCRIPTION("Cadence USBSS and USBSSP DRD Driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/cdns3/core.h b/drivers/usb/cdns3/core.h
index c97c2bb1582f..2fe482dee4d7 100644
--- a/drivers/usb/cdns3/core.h
+++ b/drivers/usb/cdns3/core.h
@@ -78,6 +78,7 @@ struct cdns3_platform_data {
* @pdata: platform data from glue layer
* @lock: spinlock structure
* @xhci_plat_data: xhci private data structure pointer
+ * @gadget_init: pointer to gadget initialization function
*/
struct cdns3 {
struct device *dev;
@@ -115,6 +116,8 @@ struct cdns3 {
struct cdns3_platform_data *pdata;
spinlock_t lock;
struct xhci_plat_priv *xhci_plat_data;
+
+ int (*gadget_init)(struct cdns3 *cdns);
};
int cdns3_hw_role_switch(struct cdns3 *cdns);
diff --git a/drivers/usb/cdns3/drd.c b/drivers/usb/cdns3/drd.c
index ed8cde91a02c..1874dc6018f0 100644
--- a/drivers/usb/cdns3/drd.c
+++ b/drivers/usb/cdns3/drd.c
@@ -15,7 +15,6 @@
#include <linux/iopoll.h>
#include <linux/usb/otg.h>
-#include "gadget.h"
#include "drd.h"
#include "core.h"
@@ -226,6 +225,7 @@ int cdns3_drd_gadget_on(struct cdns3 *cdns)
phy_set_mode(cdns->usb3_phy, PHY_MODE_USB_DEVICE);
return 0;
}
+EXPORT_SYMBOL_GPL(cdns3_drd_gadget_on);
/**
* cdns3_drd_gadget_off - stop gadget.
@@ -249,6 +249,7 @@ void cdns3_drd_gadget_off(struct cdns3 *cdns)
1, 2000000);
phy_set_mode(cdns->usb3_phy, PHY_MODE_INVALID);
}
+EXPORT_SYMBOL_GPL(cdns3_drd_gadget_off);
/**
* cdns3_init_otg_mode - initialize drd controller
--
2.17.1