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-rw-r--r--drivers/usb/gadget/udc/Kconfig32
-rw-r--r--drivers/usb/gadget/udc/Makefile3
-rw-r--r--drivers/usb/gadget/udc/amd5536udc.c266
-rw-r--r--drivers/usb/gadget/udc/amd5536udc.h40
-rw-r--r--drivers/usb/gadget/udc/amd5536udc_pci.c217
-rw-r--r--drivers/usb/gadget/udc/atmel_usba_udc.c49
-rw-r--r--drivers/usb/gadget/udc/bdc/Kconfig2
-rw-r--r--drivers/usb/gadget/udc/core.c1
-rw-r--r--drivers/usb/gadget/udc/dummy_hcd.c20
-rw-r--r--drivers/usb/gadget/udc/fsl_udc_core.c2
-rw-r--r--drivers/usb/gadget/udc/mv_u3d_core.c15
-rw-r--r--drivers/usb/gadget/udc/mv_udc_core.c13
-rw-r--r--drivers/usb/gadget/udc/net2272.c8
-rw-r--r--drivers/usb/gadget/udc/net2272.h2
-rw-r--r--drivers/usb/gadget/udc/net2280.c12
-rw-r--r--drivers/usb/gadget/udc/net2280.h2
-rw-r--r--drivers/usb/gadget/udc/pch_udc.c32
-rw-r--r--drivers/usb/gadget/udc/pxa27x_udc.c3
-rw-r--r--drivers/usb/gadget/udc/renesas_usb3.c164
19 files changed, 566 insertions, 317 deletions
diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig
index 4b69f28a9af9..1c14c283cc47 100644
--- a/drivers/usb/gadget/udc/Kconfig
+++ b/drivers/usb/gadget/udc/Kconfig
@@ -62,8 +62,9 @@ config USB_ATMEL_USBA
The fifo_mode parameter is used to select endpoint allocation mode.
fifo_mode = 0 is used to let the driver autoconfigure the endpoints.
- In this case 2 banks are allocated for isochronous endpoints and
- only one bank is allocated for the rest of the endpoints.
+ In this case, for ep1 2 banks are allocated if it works in isochronous
+ mode and only 1 bank otherwise. For the rest of the endpoints
+ only 1 bank is allocated.
fifo_mode = 1 is a generic maximum fifo size (1024 bytes) configuration
allowing the usage of ep1 - ep6
@@ -191,6 +192,7 @@ config USB_RENESAS_USBHS_UDC
config USB_RENESAS_USB3
tristate 'Renesas USB3.0 Peripheral controller'
depends on ARCH_RENESAS || COMPILE_TEST
+ depends on EXTCON
help
Renesas USB3.0 Peripheral controller is a USB peripheral controller
that supports super, high, and full speed USB 3.0 data transfers.
@@ -253,6 +255,20 @@ config USB_MV_U3D
MARVELL PXA2128 Processor series include a super speed USB3.0 device
controller, which support super speed USB peripheral.
+config USB_SNP_CORE
+ depends on USB_AMD5536UDC
+ tristate
+ help
+ This enables core driver support for Synopsys USB 2.0 Device
+ controller.
+
+ This will be enabled when PCI or Platform driver for this UDC is
+ selected. Currently, this will be enabled by USB_SNP_UDC_PLAT or
+ USB_AMD5536UDC options.
+
+ This IP is different to the High Speed OTG IP that can be enabled
+ by selecting USB_DWC2 or USB_DWC3 options.
+
#
# Controllers available in both integrated and discrete versions
#
@@ -277,7 +293,8 @@ source "drivers/usb/gadget/udc/bdc/Kconfig"
config USB_AMD5536UDC
tristate "AMD5536 UDC"
- depends on PCI
+ depends on USB_PCI
+ select USB_SNP_CORE
help
The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge.
It is a USB Highspeed DMA capable USB device controller. Beside ep0
@@ -285,6 +302,9 @@ config USB_AMD5536UDC
The UDC port supports OTG operation, and may be used as a host port
if it's not being used to implement peripheral or OTG roles.
+ This UDC is based on Synopsys USB device controller IP and selects
+ CONFIG_USB_SNP_CORE option to build the core driver.
+
Say "y" to link the driver statically, or "m" to build a
dynamically linked module called "amd5536udc" and force all
gadget drivers to also be dynamically linked.
@@ -327,7 +347,7 @@ config USB_NET2272_DMA
config USB_NET2280
tristate "NetChip NET228x / PLX USB3x8x"
- depends on PCI
+ depends on USB_PCI
help
NetChip 2280 / 2282 is a PCI based USB peripheral controller which
supports both full and high speed USB 2.0 data transfers.
@@ -352,7 +372,7 @@ config USB_NET2280
config USB_GOKU
tristate "Toshiba TC86C001 'Goku-S'"
- depends on PCI
+ depends on USB_PCI
help
The Toshiba TC86C001 is a PCI device which includes controllers
for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI).
@@ -366,7 +386,7 @@ config USB_GOKU
config USB_EG20T
tristate "Intel QUARK X1000/EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC"
- depends on PCI
+ depends on USB_PCI
help
This is a USB device driver for EG20T PCH.
EG20T PCH is the platform controller hub that is used in Intel's
diff --git a/drivers/usb/gadget/udc/Makefile b/drivers/usb/gadget/udc/Makefile
index 98e74ed9f555..626e1f1c62da 100644
--- a/drivers/usb/gadget/udc/Makefile
+++ b/drivers/usb/gadget/udc/Makefile
@@ -10,7 +10,8 @@ obj-$(CONFIG_USB_GADGET) += udc-core.o
obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o
obj-$(CONFIG_USB_NET2272) += net2272.o
obj-$(CONFIG_USB_NET2280) += net2280.o
-obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc.o
+obj-$(CONFIG_USB_SNP_CORE) += amd5536udc.o
+obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc_pci.o
obj-$(CONFIG_USB_PXA25X) += pxa25x_udc.o
obj-$(CONFIG_USB_PXA27X) += pxa27x_udc.o
obj-$(CONFIG_USB_GOKU) += goku_udc.o
diff --git a/drivers/usb/gadget/udc/amd5536udc.c b/drivers/usb/gadget/udc/amd5536udc.c
index ea03ca7ae29a..4ecd2f20ea48 100644
--- a/drivers/usb/gadget/udc/amd5536udc.c
+++ b/drivers/usb/gadget/udc/amd5536udc.c
@@ -11,27 +11,15 @@
*/
/*
- * The AMD5536 UDC is part of the x86 southbridge AMD Geode CS5536.
- * It is a USB Highspeed DMA capable USB device controller. Beside ep0 it
- * provides 4 IN and 4 OUT endpoints (bulk or interrupt type).
- *
- * Make sure that UDC is assigned to port 4 by BIOS settings (port can also
- * be used as host port) and UOC bits PAD_EN and APU are set (should be done
- * by BIOS init).
- *
- * UDC DMA requires 32-bit aligned buffers so DMA with gadget ether does not
- * work without updating NET_IP_ALIGN. Or PIO mode (module param "use_dma=0")
- * can be used with gadget ether.
+ * This file does the core driver implementation for the UDC that is based
+ * on Synopsys device controller IP (different than HS OTG IP) that is either
+ * connected through PCI bus or integrated to SoC platforms.
*/
-/* debug control */
-/* #define UDC_VERBOSE */
-
/* Driver strings */
-#define UDC_MOD_DESCRIPTION "AMD 5536 UDC - USB Device Controller"
+#define UDC_MOD_DESCRIPTION "Synopsys USB Device Controller"
#define UDC_DRIVER_VERSION_STRING "01.00.0206"
-/* system */
#include <linux/module.h>
#include <linux/pci.h>
#include <linux/kernel.h>
@@ -46,23 +34,12 @@
#include <linux/ioctl.h>
#include <linux/fs.h>
#include <linux/dmapool.h>
-#include <linux/moduleparam.h>
-#include <linux/device.h>
-#include <linux/io.h>
-#include <linux/irq.h>
#include <linux/prefetch.h>
-
+#include <linux/moduleparam.h>
#include <asm/byteorder.h>
#include <asm/unaligned.h>
-
-/* gadget stack */
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-
-/* udc specific */
#include "amd5536udc.h"
-
static void udc_tasklet_disconnect(unsigned long);
static void empty_req_queue(struct udc_ep *);
static void udc_setup_endpoints(struct udc *dev);
@@ -72,7 +49,7 @@ static void udc_free_request(struct usb_ep *usbep, struct usb_request *usbreq);
/* description */
static const char mod_desc[] = UDC_MOD_DESCRIPTION;
-static const char name[] = "amd5536udc";
+static const char name[] = "udc";
/* structure to hold endpoint function pointers */
static const struct usb_ep_ops udc_ep_ops;
@@ -208,30 +185,11 @@ static const struct {
#undef EP_INFO
};
-/* DMA usage flag */
-static bool use_dma = 1;
-/* packet per buffer dma */
-static bool use_dma_ppb = 1;
-/* with per descr. update */
-static bool use_dma_ppb_du;
/* buffer fill mode */
static int use_dma_bufferfill_mode;
-/* full speed only mode */
-static bool use_fullspeed;
/* tx buffer size for high speed */
static unsigned long hs_tx_buf = UDC_EPIN_BUFF_SIZE;
-/* module parameters */
-module_param(use_dma, bool, S_IRUGO);
-MODULE_PARM_DESC(use_dma, "true for DMA");
-module_param(use_dma_ppb, bool, S_IRUGO);
-MODULE_PARM_DESC(use_dma_ppb, "true for DMA in packet per buffer mode");
-module_param(use_dma_ppb_du, bool, S_IRUGO);
-MODULE_PARM_DESC(use_dma_ppb_du,
- "true for DMA in packet per buffer mode with descriptor update");
-module_param(use_fullspeed, bool, S_IRUGO);
-MODULE_PARM_DESC(use_fullspeed, "true for fullspeed only");
-
/*---------------------------------------------------------------------------*/
/* Prints UDC device registers and endpoint irq registers */
static void print_regs(struct udc *dev)
@@ -267,7 +225,7 @@ static void print_regs(struct udc *dev)
}
/* Masks unused interrupts */
-static int udc_mask_unused_interrupts(struct udc *dev)
+int udc_mask_unused_interrupts(struct udc *dev)
{
u32 tmp;
@@ -287,6 +245,7 @@ static int udc_mask_unused_interrupts(struct udc *dev)
return 0;
}
+EXPORT_SYMBOL_GPL(udc_mask_unused_interrupts);
/* Enables endpoint 0 interrupts */
static int udc_enable_ep0_interrupts(struct udc *dev)
@@ -306,7 +265,7 @@ static int udc_enable_ep0_interrupts(struct udc *dev)
}
/* Enables device interrupts for SET_INTF and SET_CONFIG */
-static int udc_enable_dev_setup_interrupts(struct udc *dev)
+int udc_enable_dev_setup_interrupts(struct udc *dev)
{
u32 tmp;
@@ -325,6 +284,7 @@ static int udc_enable_dev_setup_interrupts(struct udc *dev)
return 0;
}
+EXPORT_SYMBOL_GPL(udc_enable_dev_setup_interrupts);
/* Calculates fifo start of endpoint based on preceding endpoints */
static int udc_set_txfifo_addr(struct udc_ep *ep)
@@ -583,7 +543,7 @@ udc_alloc_request(struct usb_ep *usbep, gfp_t gfp)
if (ep->dma) {
/* ep0 in requests are allocated from data pool here */
- dma_desc = pci_pool_alloc(ep->dev->data_requests, gfp,
+ dma_desc = dma_pool_alloc(ep->dev->data_requests, gfp,
&req->td_phys);
if (!dma_desc) {
kfree(req);
@@ -608,27 +568,23 @@ udc_alloc_request(struct usb_ep *usbep, gfp_t gfp)
}
/* frees pci pool descriptors of a DMA chain */
-static int udc_free_dma_chain(struct udc *dev, struct udc_request *req)
+static void udc_free_dma_chain(struct udc *dev, struct udc_request *req)
{
- int ret_val = 0;
- struct udc_data_dma *td;
- struct udc_data_dma *td_last = NULL;
+ struct udc_data_dma *td = req->td_data;
unsigned int i;
+ dma_addr_t addr_next = 0x00;
+ dma_addr_t addr = (dma_addr_t)td->next;
+
DBG(dev, "free chain req = %p\n", req);
/* do not free first desc., will be done by free for request */
- td_last = req->td_data;
- td = phys_to_virt(td_last->next);
-
for (i = 1; i < req->chain_len; i++) {
- pci_pool_free(dev->data_requests, td,
- (dma_addr_t)td_last->next);
- td_last = td;
- td = phys_to_virt(td_last->next);
+ td = phys_to_virt(addr);
+ addr_next = (dma_addr_t)td->next;
+ dma_pool_free(dev->data_requests, td, addr);
+ addr = addr_next;
}
-
- return ret_val;
}
/* Frees request packet, called by gadget driver */
@@ -652,7 +608,7 @@ udc_free_request(struct usb_ep *usbep, struct usb_request *usbreq)
if (req->chain_len > 1)
udc_free_dma_chain(ep->dev, req);
- pci_pool_free(ep->dev->data_requests, req->td_data,
+ dma_pool_free(ep->dev->data_requests, req->td_data,
req->td_phys);
}
kfree(req);
@@ -847,7 +803,7 @@ static int udc_create_dma_chain(
for (i = buf_len; i < bytes; i += buf_len) {
/* create or determine next desc. */
if (create_new_chain) {
- td = pci_pool_alloc(ep->dev->data_requests,
+ td = dma_pool_alloc(ep->dev->data_requests,
gfp_flags, &dma_addr);
if (!td)
return -ENOMEM;
@@ -1507,7 +1463,7 @@ static void make_ep_lists(struct udc *dev)
}
/* Inits UDC context */
-static void udc_basic_init(struct udc *dev)
+void udc_basic_init(struct udc *dev)
{
u32 tmp;
@@ -1543,6 +1499,7 @@ static void udc_basic_init(struct udc *dev)
dev->data_ep_enabled = 0;
dev->data_ep_queued = 0;
}
+EXPORT_SYMBOL_GPL(udc_basic_init);
/* init registers at driver load time */
static int startup_registers(struct udc *dev)
@@ -3031,7 +2988,7 @@ __acquires(dev->lock)
}
/* Interrupt Service Routine, see Linux Kernel Doc for parameters */
-static irqreturn_t udc_irq(int irq, void *pdev)
+irqreturn_t udc_irq(int irq, void *pdev)
{
struct udc *dev = pdev;
u32 reg;
@@ -3083,16 +3040,18 @@ static irqreturn_t udc_irq(int irq, void *pdev)
spin_unlock(&dev->lock);
return ret_val;
}
+EXPORT_SYMBOL_GPL(udc_irq);
/* Tears down device */
-static void gadget_release(struct device *pdev)
+void gadget_release(struct device *pdev)
{
struct amd5536udc *dev = dev_get_drvdata(pdev);
kfree(dev);
}
+EXPORT_SYMBOL_GPL(gadget_release);
/* Cleanup on device remove */
-static void udc_remove(struct udc *dev)
+void udc_remove(struct udc *dev)
{
/* remove timer */
stop_timer++;
@@ -3108,9 +3067,10 @@ static void udc_remove(struct udc *dev)
del_timer_sync(&udc_pollstall_timer);
udc = NULL;
}
+EXPORT_SYMBOL_GPL(udc_remove);
/* free all the dma pools */
-static void free_dma_pools(struct udc *dev)
+void free_dma_pools(struct udc *dev)
{
dma_pool_free(dev->stp_requests, dev->ep[UDC_EP0OUT_IX].td,
dev->ep[UDC_EP0OUT_IX].td_phys);
@@ -3119,35 +3079,10 @@ static void free_dma_pools(struct udc *dev)
dma_pool_destroy(dev->stp_requests);
dma_pool_destroy(dev->data_requests);
}
-
-/* Reset all pci context */
-static void udc_pci_remove(struct pci_dev *pdev)
-{
- struct udc *dev;
-
- dev = pci_get_drvdata(pdev);
-
- usb_del_gadget_udc(&udc->gadget);
- /* gadget driver must not be registered */
- if (WARN_ON(dev->driver))
- return;
-
- /* dma pool cleanup */
- free_dma_pools(dev);
-
- /* reset controller */
- writel(AMD_BIT(UDC_DEVCFG_SOFTRESET), &dev->regs->cfg);
- free_irq(pdev->irq, dev);
- iounmap(dev->virt_addr);
- release_mem_region(pci_resource_start(pdev, 0),
- pci_resource_len(pdev, 0));
- pci_disable_device(pdev);
-
- udc_remove(dev);
-}
+EXPORT_SYMBOL_GPL(free_dma_pools);
/* create dma pools on init */
-static int init_dma_pools(struct udc *dev)
+int init_dma_pools(struct udc *dev)
{
struct udc_stp_dma *td_stp;
struct udc_data_dma *td_data;
@@ -3210,9 +3145,10 @@ err_create_dma_pool:
dev->data_requests = NULL;
return retval;
}
+EXPORT_SYMBOL_GPL(init_dma_pools);
/* general probe */
-static int udc_probe(struct udc *dev)
+int udc_probe(struct udc *dev)
{
char tmp[128];
u32 reg;
@@ -3276,137 +3212,7 @@ static int udc_probe(struct udc *dev)
finished:
return retval;
}
-
-/* Called by pci bus driver to init pci context */
-static int udc_pci_probe(
- struct pci_dev *pdev,
- const struct pci_device_id *id
-)
-{
- struct udc *dev;
- unsigned long resource;
- unsigned long len;
- int retval = 0;
-
- /* one udc only */
- if (udc) {
- dev_dbg(&pdev->dev, "already probed\n");
- return -EBUSY;
- }
-
- /* init */
- dev = kzalloc(sizeof(struct udc), GFP_KERNEL);
- if (!dev)
- return -ENOMEM;
-
- /* pci setup */
- if (pci_enable_device(pdev) < 0) {
- retval = -ENODEV;
- goto err_pcidev;
- }
-
- /* PCI resource allocation */
- resource = pci_resource_start(pdev, 0);
- len = pci_resource_len(pdev, 0);
-
- if (!request_mem_region(resource, len, name)) {
- dev_dbg(&pdev->dev, "pci device used already\n");
- retval = -EBUSY;
- goto err_memreg;
- }
-
- dev->virt_addr = ioremap_nocache(resource, len);
- if (!dev->virt_addr) {
- dev_dbg(&pdev->dev, "start address cannot be mapped\n");
- retval = -EFAULT;
- goto err_ioremap;
- }
-
- if (!pdev->irq) {
- dev_err(&pdev->dev, "irq not set\n");
- retval = -ENODEV;
- goto err_irq;
- }
-
- spin_lock_init(&dev->lock);
- /* udc csr registers base */
- dev->csr = dev->virt_addr + UDC_CSR_ADDR;
- /* dev registers base */
- dev->regs = dev->virt_addr + UDC_DEVCFG_ADDR;
- /* ep registers base */
- dev->ep_regs = dev->virt_addr + UDC_EPREGS_ADDR;
- /* fifo's base */
- dev->rxfifo = (u32 __iomem *)(dev->virt_addr + UDC_RXFIFO_ADDR);
- dev->txfifo = (u32 __iomem *)(dev->virt_addr + UDC_TXFIFO_ADDR);
-
- if (request_irq(pdev->irq, udc_irq, IRQF_SHARED, name, dev) != 0) {
- dev_dbg(&pdev->dev, "request_irq(%d) fail\n", pdev->irq);
- retval = -EBUSY;
- goto err_irq;
- }
-
- pci_set_drvdata(pdev, dev);
-
- /* chip revision for Hs AMD5536 */
- dev->chiprev = pdev->revision;
-
- pci_set_master(pdev);
- pci_try_set_mwi(pdev);
-
- /* init dma pools */
- if (use_dma) {
- retval = init_dma_pools(dev);
- if (retval != 0)
- goto err_dma;
- }
-
- dev->phys_addr = resource;
- dev->irq = pdev->irq;
- dev->pdev = pdev;
-
- /* general probing */
- if (udc_probe(dev)) {
- retval = -ENODEV;
- goto err_probe;
- }
- return 0;
-
-err_probe:
- if (use_dma)
- free_dma_pools(dev);
-err_dma:
- free_irq(pdev->irq, dev);
-err_irq:
- iounmap(dev->virt_addr);
-err_ioremap:
- release_mem_region(resource, len);
-err_memreg:
- pci_disable_device(pdev);
-err_pcidev:
- kfree(dev);
- return retval;
-}
-
-/* PCI device parameters */
-static const struct pci_device_id pci_id[] = {
- {
- PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x2096),
- .class = PCI_CLASS_SERIAL_USB_DEVICE,
- .class_mask = 0xffffffff,
- },
- {},
-};
-MODULE_DEVICE_TABLE(pci, pci_id);
-
-/* PCI functions */
-static struct pci_driver udc_pci_driver = {
- .name = (char *) name,
- .id_table = pci_id,
- .probe = udc_pci_probe,
- .remove = udc_pci_remove,
-};
-
-module_pci_driver(udc_pci_driver);
+EXPORT_SYMBOL_GPL(udc_probe);
MODULE_DESCRIPTION(UDC_MOD_DESCRIPTION);
MODULE_AUTHOR("Thomas Dahlmann");
diff --git a/drivers/usb/gadget/udc/amd5536udc.h b/drivers/usb/gadget/udc/amd5536udc.h
index 4638d707f169..fae49bf3833e 100644
--- a/drivers/usb/gadget/udc/amd5536udc.h
+++ b/drivers/usb/gadget/udc/amd5536udc.h
@@ -13,6 +13,12 @@
#ifndef AMD5536UDC_H
#define AMD5536UDC_H
+/* debug control */
+/* #define UDC_VERBOSE */
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
/* various constants */
#define UDC_RDE_TIMER_SECONDS 1
#define UDC_RDE_TIMER_DIV 10
@@ -545,8 +551,8 @@ struct udc {
u32 __iomem *txfifo;
/* DMA desc pools */
- struct pci_pool *data_requests;
- struct pci_pool *stp_requests;
+ struct dma_pool *data_requests;
+ struct dma_pool *stp_requests;
/* device data */
unsigned long phys_addr;
@@ -567,6 +573,36 @@ union udc_setup_data {
struct usb_ctrlrequest request;
};
+/* Function declarations */
+int udc_enable_dev_setup_interrupts(struct udc *dev);
+int udc_mask_unused_interrupts(struct udc *dev);
+irqreturn_t udc_irq(int irq, void *pdev);
+void gadget_release(struct device *pdev);
+void udc_basic_init(struct udc *dev);
+void free_dma_pools(struct udc *dev);
+int init_dma_pools(struct udc *dev);
+void udc_remove(struct udc *dev);
+int udc_probe(struct udc *dev);
+
+/* DMA usage flag */
+static bool use_dma = 1;
+/* packet per buffer dma */
+static bool use_dma_ppb = 1;
+/* with per descr. update */
+static bool use_dma_ppb_du;
+/* full speed only mode */
+static bool use_fullspeed;
+
+/* module parameters */
+module_param(use_dma, bool, S_IRUGO);
+MODULE_PARM_DESC(use_dma, "true for DMA");
+module_param(use_dma_ppb, bool, S_IRUGO);
+MODULE_PARM_DESC(use_dma_ppb, "true for DMA in packet per buffer mode");
+module_param(use_dma_ppb_du, bool, S_IRUGO);
+MODULE_PARM_DESC(use_dma_ppb_du,
+ "true for DMA in packet per buffer mode with descriptor update");
+module_param(use_fullspeed, bool, S_IRUGO);
+MODULE_PARM_DESC(use_fullspeed, "true for fullspeed only");
/*
*---------------------------------------------------------------------------
* SET and GET bitfields in u32 values
diff --git a/drivers/usb/gadget/udc/amd5536udc_pci.c b/drivers/usb/gadget/udc/amd5536udc_pci.c
new file mode 100644
index 000000000000..2a2d0a96fe24
--- /dev/null
+++ b/drivers/usb/gadget/udc/amd5536udc_pci.c
@@ -0,0 +1,217 @@
+/*
+ * amd5536udc_pci.c -- AMD 5536 UDC high/full speed USB device controller
+ *
+ * Copyright (C) 2005-2007 AMD (http://www.amd.com)
+ * Author: Thomas Dahlmann
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+/*
+ * The AMD5536 UDC is part of the x86 southbridge AMD Geode CS5536.
+ * It is a USB Highspeed DMA capable USB device controller. Beside ep0 it
+ * provides 4 IN and 4 OUT endpoints (bulk or interrupt type).
+ *
+ * Make sure that UDC is assigned to port 4 by BIOS settings (port can also
+ * be used as host port) and UOC bits PAD_EN and APU are set (should be done
+ * by BIOS init).
+ *
+ * UDC DMA requires 32-bit aligned buffers so DMA with gadget ether does not
+ * work without updating NET_IP_ALIGN. Or PIO mode (module param "use_dma=0")
+ * can be used with gadget ether.
+ *
+ * This file does pci device registration, and the core driver implementation
+ * is done in amd5536udc.c
+ *
+ * The driver is split so as to use the core UDC driver which is based on
+ * Synopsys device controller IP (different than HS OTG IP) in UDCs
+ * integrated to SoC platforms.
+ *
+ */
+
+/* Driver strings */
+#define UDC_MOD_DESCRIPTION "AMD 5536 UDC - USB Device Controller"
+
+/* system */
+#include <linux/device.h>
+#include <linux/dmapool.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/prefetch.h>
+#include <linux/pci.h>
+
+/* udc specific */
+#include "amd5536udc.h"
+
+/* pointer to device object */
+static struct udc *udc;
+
+/* description */
+static const char mod_desc[] = UDC_MOD_DESCRIPTION;
+static const char name[] = "amd5536udc-pci";
+
+/* Reset all pci context */
+static void udc_pci_remove(struct pci_dev *pdev)
+{
+ struct udc *dev;
+
+ dev = pci_get_drvdata(pdev);
+
+ usb_del_gadget_udc(&udc->gadget);
+ /* gadget driver must not be registered */
+ if (WARN_ON(dev->driver))
+ return;
+
+ /* dma pool cleanup */
+ free_dma_pools(dev);
+
+ /* reset controller */
+ writel(AMD_BIT(UDC_DEVCFG_SOFTRESET), &dev->regs->cfg);
+ free_irq(pdev->irq, dev);
+ iounmap(dev->virt_addr);
+ release_mem_region(pci_resource_start(pdev, 0),
+ pci_resource_len(pdev, 0));
+ pci_disable_device(pdev);
+
+ udc_remove(dev);
+}
+
+/* Called by pci bus driver to init pci context */
+static int udc_pci_probe(
+ struct pci_dev *pdev,
+ const struct pci_device_id *id
+)
+{
+ struct udc *dev;
+ unsigned long resource;
+ unsigned long len;
+ int retval = 0;
+
+ /* one udc only */
+ if (udc) {
+ dev_dbg(&pdev->dev, "already probed\n");
+ return -EBUSY;
+ }
+
+ /* init */
+ dev = kzalloc(sizeof(struct udc), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ /* pci setup */
+ if (pci_enable_device(pdev) < 0) {
+ retval = -ENODEV;
+ goto err_pcidev;
+ }
+
+ /* PCI resource allocation */
+ resource = pci_resource_start(pdev, 0);
+ len = pci_resource_len(pdev, 0);
+
+ if (!request_mem_region(resource, len, name)) {
+ dev_dbg(&pdev->dev, "pci device used already\n");
+ retval = -EBUSY;
+ goto err_memreg;
+ }
+
+ dev->virt_addr = ioremap_nocache(resource, len);
+ if (!dev->virt_addr) {
+ dev_dbg(&pdev->dev, "start address cannot be mapped\n");
+ retval = -EFAULT;
+ goto err_ioremap;
+ }
+
+ if (!pdev->irq) {
+ dev_err(&pdev->dev, "irq not set\n");
+ retval = -ENODEV;
+ goto err_irq;
+ }
+
+ spin_lock_init(&dev->lock);
+ /* udc csr registers base */
+ dev->csr = dev->virt_addr + UDC_CSR_ADDR;
+ /* dev registers base */
+ dev->regs = dev->virt_addr + UDC_DEVCFG_ADDR;
+ /* ep registers base */
+ dev->ep_regs = dev->virt_addr + UDC_EPREGS_ADDR;
+ /* fifo's base */
+ dev->rxfifo = (u32 __iomem *)(dev->virt_addr + UDC_RXFIFO_ADDR);
+ dev->txfifo = (u32 __iomem *)(dev->virt_addr + UDC_TXFIFO_ADDR);
+
+ if (request_irq(pdev->irq, udc_irq, IRQF_SHARED, name, dev) != 0) {
+ dev_dbg(&pdev->dev, "request_irq(%d) fail\n", pdev->irq);
+ retval = -EBUSY;
+ goto err_irq;
+ }
+
+ pci_set_drvdata(pdev, dev);
+
+ /* chip revision for Hs AMD5536 */
+ dev->chiprev = pdev->revision;
+
+ pci_set_master(pdev);
+ pci_try_set_mwi(pdev);
+
+ /* init dma pools */
+ if (use_dma) {
+ retval = init_dma_pools(dev);
+ if (retval != 0)
+ goto err_dma;
+ }
+
+ dev->phys_addr = resource;
+ dev->irq = pdev->irq;
+ dev->pdev = pdev;
+
+ /* general probing */
+ if (udc_probe(dev)) {
+ retval = -ENODEV;
+ goto err_probe;
+ }
+ return 0;
+
+err_probe:
+ if (use_dma)
+ free_dma_pools(dev);
+err_dma:
+ free_irq(pdev->irq, dev);
+err_irq:
+ iounmap(dev->virt_addr);
+err_ioremap:
+ release_mem_region(resource, len);
+err_memreg:
+ pci_disable_device(pdev);
+err_pcidev:
+ kfree(dev);
+ return retval;
+}
+
+/* PCI device parameters */
+static const struct pci_device_id pci_id[] = {
+ {
+ PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x2096),
+ .class = PCI_CLASS_SERIAL_USB_DEVICE,
+ .class_mask = 0xffffffff,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(pci, pci_id);
+
+/* PCI functions */
+static struct pci_driver udc_pci_driver = {
+ .name = (char *) name,
+ .id_table = pci_id,
+ .probe = udc_pci_probe,
+ .remove = udc_pci_remove,
+};
+module_pci_driver(udc_pci_driver);
+
+MODULE_DESCRIPTION(UDC_MOD_DESCRIPTION);
+MODULE_AUTHOR("Thomas Dahlmann");
+MODULE_LICENSE("GPL");
diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
index 2035906b8ced..3ccc34176a5a 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
@@ -321,7 +321,6 @@ static inline void usba_cleanup_debugfs(struct usba_udc *udc)
static ushort fifo_mode;
-/* "modprobe ... fifo_mode=1" etc */
module_param(fifo_mode, ushort, 0x0);
MODULE_PARM_DESC(fifo_mode, "Endpoint configuration mode");
@@ -371,7 +370,7 @@ static struct usba_fifo_cfg mode_4_cfg[] = {
};
/* Add additional configurations here */
-int usba_config_fifo_table(struct usba_udc *udc)
+static int usba_config_fifo_table(struct usba_udc *udc)
{
int n;
@@ -1076,11 +1075,9 @@ static int atmel_usba_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver);
static int atmel_usba_stop(struct usb_gadget *gadget);
-static struct usb_ep *atmel_usba_match_ep(
- struct usb_gadget *gadget,
- struct usb_endpoint_descriptor *desc,
- struct usb_ss_ep_comp_descriptor *ep_comp
-)
+static struct usb_ep *atmel_usba_match_ep(struct usb_gadget *gadget,
+ struct usb_endpoint_descriptor *desc,
+ struct usb_ss_ep_comp_descriptor *ep_comp)
{
struct usb_ep *_ep;
struct usba_ep *ep;
@@ -1100,7 +1097,6 @@ found_ep:
ep = to_usba_ep(_ep);
switch (usb_endpoint_type(desc)) {
-
case USB_ENDPOINT_XFER_CONTROL:
break;
@@ -1141,7 +1137,7 @@ found_ep:
ep->udc->configured_ep++;
}
-return _ep;
+ return _ep;
}
static const struct usb_gadget_ops usba_udc_ops = {
@@ -1855,8 +1851,8 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
* but it's clearly harmless...
*/
if (!(usba_ep_readl(ep0, CFG) & USBA_EPT_MAPPED))
- dev_dbg(&udc->pdev->dev,
- "ODD: EP0 configuration is invalid!\n");
+ dev_err(&udc->pdev->dev,
+ "ODD: EP0 configuration is invalid!\n");
/* Preallocate other endpoints */
n = fifo_mode ? udc->num_ep : udc->configured_ep;
@@ -1864,8 +1860,8 @@ static irqreturn_t usba_udc_irq(int irq, void *devid)
ep = &udc->usba_ep[i];
usba_ep_writel(ep, CFG, ep->ept_cfg);
if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED))
- dev_dbg(&udc->pdev->dev,
- "ODD: EP%d configuration is invalid!\n", i);
+ dev_err(&udc->pdev->dev,
+ "ODD: EP%d configuration is invalid!\n", i);
}
}
@@ -2089,8 +2085,9 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev,
while ((pp = of_get_next_child(np, pp)))
udc->num_ep++;
udc->configured_ep = 1;
- } else
+ } else {
udc->num_ep = usba_config_fifo_table(udc);
+ }
eps = devm_kzalloc(&pdev->dev, sizeof(struct usba_ep) * udc->num_ep,
GFP_KERNEL);
@@ -2118,14 +2115,34 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev,
dev_err(&pdev->dev, "of_probe: fifo-size error(%d)\n", ret);
goto err;
}
- ep->fifo_size = fifo_mode ? udc->fifo_cfg[i].fifo_size : val;
+ if (fifo_mode) {
+ if (val < udc->fifo_cfg[i].fifo_size) {
+ dev_warn(&pdev->dev,
+ "Using max fifo-size value from DT\n");
+ ep->fifo_size = val;
+ } else {
+ ep->fifo_size = udc->fifo_cfg[i].fifo_size;
+ }
+ } else {
+ ep->fifo_size = val;
+ }
ret = of_property_read_u32(pp, "atmel,nb-banks", &val);
if (ret) {
dev_err(&pdev->dev, "of_probe: nb-banks error(%d)\n", ret);
goto err;
}
- ep->nr_banks = fifo_mode ? udc->fifo_cfg[i].nr_banks : val;
+ if (fifo_mode) {
+ if (val < udc->fifo_cfg[i].nr_banks) {
+ dev_warn(&pdev->dev,
+ "Using max nb-banks value from DT\n");
+ ep->nr_banks = val;
+ } else {
+ ep->nr_banks = udc->fifo_cfg[i].nr_banks;
+ }
+ } else {
+ ep->nr_banks = val;
+ }
ep->can_dma = of_property_read_bool(pp, "atmel,can-dma");
ep->can_isoc = of_property_read_bool(pp, "atmel,can-isoc");
diff --git a/drivers/usb/gadget/udc/bdc/Kconfig b/drivers/usb/gadget/udc/bdc/Kconfig
index 0d7b8c9f72fd..eb8b55392360 100644
--- a/drivers/usb/gadget/udc/bdc/Kconfig
+++ b/drivers/usb/gadget/udc/bdc/Kconfig
@@ -14,7 +14,7 @@ if USB_BDC_UDC
comment "Platform Support"
config USB_BDC_PCI
tristate "BDC support for PCIe based platforms"
- depends on PCI
+ depends on USB_PCI
default USB_BDC_UDC
help
Enable support for platforms which have BDC connected through PCIe, such as Lego3 FPGA platform.
diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c
index d685d82dcf48..efce68e9a8e0 100644
--- a/drivers/usb/gadget/udc/core.c
+++ b/drivers/usb/gadget/udc/core.c
@@ -1273,6 +1273,7 @@ void usb_del_gadget_udc(struct usb_gadget *gadget)
flush_work(&gadget->work);
device_unregister(&udc->dev);
device_unregister(&gadget->dev);
+ memset(&gadget->dev, 0x00, sizeof(gadget->dev));
}
EXPORT_SYMBOL_GPL(usb_del_gadget_udc);
diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c
index 8cabc5944d5f..c79081952ea0 100644
--- a/drivers/usb/gadget/udc/dummy_hcd.c
+++ b/drivers/usb/gadget/udc/dummy_hcd.c
@@ -2062,16 +2062,13 @@ static int dummy_hub_control(
}
break;
case USB_PORT_FEAT_POWER:
- if (hcd->speed == HCD_USB3) {
- if (dum_hcd->port_status & USB_PORT_STAT_POWER)
- dev_dbg(dummy_dev(dum_hcd),
- "power-off\n");
- } else
- if (dum_hcd->port_status &
- USB_SS_PORT_STAT_POWER)
- dev_dbg(dummy_dev(dum_hcd),
- "power-off\n");
- /* FALLS THROUGH */
+ dev_dbg(dummy_dev(dum_hcd), "power-off\n");
+ if (hcd->speed == HCD_USB3)
+ dum_hcd->port_status &= ~USB_SS_PORT_STAT_POWER;
+ else
+ dum_hcd->port_status &= ~USB_PORT_STAT_POWER;
+ set_link_state(dum_hcd);
+ break;
default:
dum_hcd->port_status &= ~(1 << wValue);
set_link_state(dum_hcd);
@@ -2242,14 +2239,13 @@ static int dummy_hub_control(
if ((dum_hcd->port_status &
USB_SS_PORT_STAT_POWER) != 0) {
dum_hcd->port_status |= (1 << wValue);
- set_link_state(dum_hcd);
}
} else
if ((dum_hcd->port_status &
USB_PORT_STAT_POWER) != 0) {
dum_hcd->port_status |= (1 << wValue);
- set_link_state(dum_hcd);
}
+ set_link_state(dum_hcd);
}
break;
case GetPortErrorCount:
diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c
index b76fcdb763a0..6f2f71c054be 100644
--- a/drivers/usb/gadget/udc/fsl_udc_core.c
+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
@@ -2676,6 +2676,8 @@ static const struct platform_device_id fsl_udc_devtype[] = {
}, {
.name = "imx-udc-mx51",
}, {
+ .name = "fsl-usb2-udc",
+ }, {
/* sentinel */
}
};
diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c b/drivers/usb/gadget/udc/mv_u3d_core.c
index d365449a295a..772049afe166 100644
--- a/drivers/usb/gadget/udc/mv_u3d_core.c
+++ b/drivers/usb/gadget/udc/mv_u3d_core.c
@@ -1835,13 +1835,18 @@ static int mv_u3d_probe(struct platform_device *dev)
}
/* we will access controller register, so enable the u3d controller */
- clk_enable(u3d->clk);
+ retval = clk_enable(u3d->clk);
+ if (retval) {
+ dev_err(&dev->dev, "clk_enable error %d\n", retval);
+ goto err_u3d_enable;
+ }
if (pdata->phy_init) {
retval = pdata->phy_init(u3d->phy_regs);
if (retval) {
dev_err(&dev->dev, "init phy error %d\n", retval);
- goto err_u3d_enable;
+ clk_disable(u3d->clk);
+ goto err_phy_init;
}
}
@@ -1974,15 +1979,13 @@ err_alloc_trb_pool:
dma_free_coherent(&dev->dev, u3d->ep_context_size,
u3d->ep_context, u3d->ep_context_dma);
err_alloc_ep_context:
- if (pdata->phy_deinit)
- pdata->phy_deinit(u3d->phy_regs);
- clk_disable(u3d->clk);
+err_phy_init:
err_u3d_enable:
iounmap(u3d->cap_regs);
err_map_cap_regs:
err_get_cap_regs:
-err_get_clk:
clk_put(u3d->clk);
+err_get_clk:
kfree(u3d);
err_alloc_private:
err_pdata:
diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c
index 27ebb0d5449d..76f56c5762f9 100644
--- a/drivers/usb/gadget/udc/mv_udc_core.c
+++ b/drivers/usb/gadget/udc/mv_udc_core.c
@@ -445,7 +445,8 @@ static int mv_ep_enable(struct usb_ep *_ep,
struct mv_dqh *dqh;
u16 max = 0;
u32 bit_pos, epctrlx, direction;
- unsigned char zlt = 0, ios = 0, mult = 0;
+ const unsigned char zlt = 1;
+ unsigned char ios, mult;
unsigned long flags;
ep = container_of(_ep, struct mv_ep, ep);
@@ -465,8 +466,6 @@ static int mv_ep_enable(struct usb_ep *_ep,
* disable HW zero length termination select
* driver handles zero length packet through req->req.zero
*/
- zlt = 1;
-
bit_pos = 1 << ((direction == EP_DIR_OUT ? 0 : 16) + ep->ep_num);
/* Check if the Endpoint is Primed */
@@ -481,16 +480,16 @@ static int mv_ep_enable(struct usb_ep *_ep,
(unsigned)bit_pos);
goto en_done;
}
+
/* Set the max packet length, interrupt on Setup and Mult fields */
+ ios = 0;
+ mult = 0;
switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) {
case USB_ENDPOINT_XFER_BULK:
- zlt = 1;
- mult = 0;
+ case USB_ENDPOINT_XFER_INT:
break;
case USB_ENDPOINT_XFER_CONTROL:
ios = 1;
- case USB_ENDPOINT_XFER_INT:
- mult = 0;
break;
case USB_ENDPOINT_XFER_ISOC:
/* Calculate transactions needed for high bandwidth iso */
diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c
index 7dc0102abdfe..8f85a51bd2b3 100644
--- a/drivers/usb/gadget/udc/net2272.c
+++ b/drivers/usb/gadget/udc/net2272.c
@@ -653,7 +653,7 @@ net2272_request_dma(struct net2272 *dev, unsigned ep, u32 buf,
dev->dma_busy = 1;
/* initialize platform's dma */
-#ifdef CONFIG_PCI
+#ifdef CONFIG_USB_PCI
/* NET2272 addr, buffer addr, length, etc. */
switch (dev->dev_id) {
case PCI_DEVICE_ID_RDK1:
@@ -701,7 +701,7 @@ static void
net2272_start_dma(struct net2272 *dev)
{
/* start platform's dma controller */
-#ifdef CONFIG_PCI
+#ifdef CONFIG_USB_PCI
switch (dev->dev_id) {
case PCI_DEVICE_ID_RDK1:
writeb((1 << CHANNEL_ENABLE) | (1 << CHANNEL_START),
@@ -797,7 +797,7 @@ net2272_kick_dma(struct net2272_ep *ep, struct net2272_request *req)
static void net2272_cancel_dma(struct net2272 *dev)
{
-#ifdef CONFIG_PCI
+#ifdef CONFIG_USB_PCI
switch (dev->dev_id) {
case PCI_DEVICE_ID_RDK1:
writeb(0, dev->rdk1.plx9054_base_addr + DMACSR0);
@@ -2306,7 +2306,7 @@ err_add_udc:
return ret;
}
-#ifdef CONFIG_PCI
+#ifdef CONFIG_USB_PCI
/*
* wrap this driver around the specified device, but
diff --git a/drivers/usb/gadget/udc/net2272.h b/drivers/usb/gadget/udc/net2272.h
index 127ab03fcde3..69bc9c3c6ce4 100644
--- a/drivers/usb/gadget/udc/net2272.h
+++ b/drivers/usb/gadget/udc/net2272.h
@@ -472,7 +472,7 @@ struct net2272 {
unsigned int base_shift;
u16 __iomem *base_addr;
union {
-#ifdef CONFIG_PCI
+#ifdef CONFIG_USB_PCI
struct {
void __iomem *plx9054_base_addr;
void __iomem *epld_base_addr;
diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c
index 3828c2ec8623..6cf07857eaca 100644
--- a/drivers/usb/gadget/udc/net2280.c
+++ b/drivers/usb/gadget/udc/net2280.c
@@ -569,7 +569,7 @@ static struct usb_request
if (ep->dma) {
struct net2280_dma *td;
- td = pci_pool_alloc(ep->dev->requests, gfp_flags,
+ td = dma_pool_alloc(ep->dev->requests, gfp_flags,
&req->td_dma);
if (!td) {
kfree(req);
@@ -597,7 +597,7 @@ static void net2280_free_request(struct usb_ep *_ep, struct usb_request *_req)
req = container_of(_req, struct net2280_request, req);
WARN_ON(!list_empty(&req->queue));
if (req->td)
- pci_pool_free(ep->dev->requests, req->td, req->td_dma);
+ dma_pool_free(ep->dev->requests, req->td, req->td_dma);
kfree(req);
}
@@ -3579,10 +3579,10 @@ static void net2280_remove(struct pci_dev *pdev)
for (i = 1; i < 5; i++) {
if (!dev->ep[i].dummy)
continue;
- pci_pool_free(dev->requests, dev->ep[i].dummy,
+ dma_pool_free(dev->requests, dev->ep[i].dummy,
dev->ep[i].td_dma);
}
- pci_pool_destroy(dev->requests);
+ dma_pool_destroy(dev->requests);
}
if (dev->got_irq)
free_irq(pdev->irq, dev);
@@ -3724,7 +3724,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
/* DMA setup */
/* NOTE: we know only the 32 LSBs of dma addresses may be nonzero */
- dev->requests = pci_pool_create("requests", pdev,
+ dev->requests = dma_pool_create("requests", &pdev->dev,
sizeof(struct net2280_dma),
0 /* no alignment requirements */,
0 /* or page-crossing issues */);
@@ -3736,7 +3736,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id)
for (i = 1; i < 5; i++) {
struct net2280_dma *td;
- td = pci_pool_alloc(dev->requests, GFP_KERNEL,
+ td = dma_pool_alloc(dev->requests, GFP_KERNEL,
&dev->ep[i].td_dma);
if (!td) {
ep_dbg(dev, "can't get dummy %d\n", i);
diff --git a/drivers/usb/gadget/udc/net2280.h b/drivers/usb/gadget/udc/net2280.h
index 2736a95751c3..1088c3745999 100644
--- a/drivers/usb/gadget/udc/net2280.h
+++ b/drivers/usb/gadget/udc/net2280.h
@@ -187,7 +187,7 @@ struct net2280 {
struct usb338x_ll_chi_regs __iomem *ll_chicken_reg;
struct usb338x_pl_regs __iomem *plregs;
- struct pci_pool *requests;
+ struct dma_pool *requests;
/* statistics...*/
};
diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c
index 8a365aad66fe..84dcbcd756f0 100644
--- a/drivers/usb/gadget/udc/pch_udc.c
+++ b/drivers/usb/gadget/udc/pch_udc.c
@@ -355,8 +355,8 @@ struct pch_udc_dev {
vbus_session:1,
set_cfg_not_acked:1,
waiting_zlp_ack:1;
- struct pci_pool *data_requests;
- struct pci_pool *stp_requests;
+ struct dma_pool *data_requests;
+ struct dma_pool *stp_requests;
dma_addr_t dma_addr;
struct usb_ctrlrequest setup_data;
void __iomem *base_addr;
@@ -1522,7 +1522,8 @@ static void pch_udc_free_dma_chain(struct pch_udc_dev *dev,
/* do not free first desc., will be done by free for request */
td = phys_to_virt(addr);
addr2 = (dma_addr_t)td->next;
- pci_pool_free(dev->data_requests, td, addr);
+ dma_pool_free(dev->data_requests, td, addr);
+ td->next = 0x00;
addr = addr2;
}
req->chain_len = 1;
@@ -1538,7 +1539,7 @@ static void pch_udc_free_dma_chain(struct pch_udc_dev *dev,
*
* Return codes:
* 0: success,
- * -ENOMEM: pci_pool_alloc invocation fails
+ * -ENOMEM: dma_pool_alloc invocation fails
*/
static int pch_udc_create_dma_chain(struct pch_udc_ep *ep,
struct pch_udc_request *req,
@@ -1564,7 +1565,7 @@ static int pch_udc_create_dma_chain(struct pch_udc_ep *ep,
if (bytes <= buf_len)
break;
last = td;
- td = pci_pool_alloc(ep->dev->data_requests, gfp_flags,
+ td = dma_pool_alloc(ep->dev->data_requests, gfp_flags,
&dma_addr);
if (!td)
goto nomem;
@@ -1769,7 +1770,7 @@ static struct usb_request *pch_udc_alloc_request(struct usb_ep *usbep,
if (!ep->dev->dma_addr)
return &req->req;
/* ep0 in requests are allocated from data pool here */
- dma_desc = pci_pool_alloc(ep->dev->data_requests, gfp,
+ dma_desc = dma_pool_alloc(ep->dev->data_requests, gfp,
&req->td_data_phys);
if (NULL == dma_desc) {
kfree(req);
@@ -1808,7 +1809,7 @@ static void pch_udc_free_request(struct usb_ep *usbep,
if (req->td_data != NULL) {
if (req->chain_len > 1)
pch_udc_free_dma_chain(ep->dev, req);
- pci_pool_free(ep->dev->data_requests, req->td_data,
+ dma_pool_free(ep->dev->data_requests, req->td_data,
req->td_data_phys);
}
kfree(req);
@@ -2913,7 +2914,7 @@ static int init_dma_pools(struct pch_udc_dev *dev)
void *ep0out_buf;
/* DMA setup */
- dev->data_requests = pci_pool_create("data_requests", dev->pdev,
+ dev->data_requests = dma_pool_create("data_requests", &dev->pdev->dev,
sizeof(struct pch_udc_data_dma_desc), 0, 0);
if (!dev->data_requests) {
dev_err(&dev->pdev->dev, "%s: can't get request data pool\n",
@@ -2922,7 +2923,7 @@ static int init_dma_pools(struct pch_udc_dev *dev)
}
/* dma desc for setup data */
- dev->stp_requests = pci_pool_create("setup requests", dev->pdev,
+ dev->stp_requests = dma_pool_create("setup requests", &dev->pdev->dev,
sizeof(struct pch_udc_stp_dma_desc), 0, 0);
if (!dev->stp_requests) {
dev_err(&dev->pdev->dev, "%s: can't get setup request pool\n",
@@ -2930,7 +2931,7 @@ static int init_dma_pools(struct pch_udc_dev *dev)
return -ENOMEM;
}
/* setup */
- td_stp = pci_pool_alloc(dev->stp_requests, GFP_KERNEL,
+ td_stp = dma_pool_alloc(dev->stp_requests, GFP_KERNEL,
&dev->ep[UDC_EP0OUT_IDX].td_stp_phys);
if (!td_stp) {
dev_err(&dev->pdev->dev,
@@ -2940,7 +2941,7 @@ static int init_dma_pools(struct pch_udc_dev *dev)
dev->ep[UDC_EP0OUT_IDX].td_stp = td_stp;
/* data: 0 packets !? */
- td_data = pci_pool_alloc(dev->data_requests, GFP_KERNEL,
+ td_data = dma_pool_alloc(dev->data_requests, GFP_KERNEL,
&dev->ep[UDC_EP0OUT_IDX].td_data_phys);
if (!td_data) {
dev_err(&dev->pdev->dev,
@@ -3020,22 +3021,21 @@ static void pch_udc_remove(struct pci_dev *pdev)
dev_err(&pdev->dev,
"%s: gadget driver still bound!!!\n", __func__);
/* dma pool cleanup */
- if (dev->data_requests)
- pci_pool_destroy(dev->data_requests);
+ dma_pool_destroy(dev->data_requests);
if (dev->stp_requests) {
/* cleanup DMA desc's for ep0in */
if (dev->ep[UDC_EP0OUT_IDX].td_stp) {
- pci_pool_free(dev->stp_requests,
+ dma_pool_free(dev->stp_requests,
dev->ep[UDC_EP0OUT_IDX].td_stp,
dev->ep[UDC_EP0OUT_IDX].td_stp_phys);
}
if (dev->ep[UDC_EP0OUT_IDX].td_data) {
- pci_pool_free(dev->stp_requests,
+ dma_pool_free(dev->stp_requests,
dev->ep[UDC_EP0OUT_IDX].td_data,
dev->ep[UDC_EP0OUT_IDX].td_data_phys);
}
- pci_pool_destroy(dev->stp_requests);
+ dma_pool_destroy(dev->stp_requests);
}
if (dev->dma_addr)
diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
index 832c4fdbe985..d48e239660c3 100644
--- a/drivers/usb/gadget/udc/pxa27x_udc.c
+++ b/drivers/usb/gadget/udc/pxa27x_udc.c
@@ -1608,9 +1608,6 @@ static int pxa_udc_pullup(struct usb_gadget *_gadget, int is_active)
return 0;
}
-static void udc_enable(struct pxa_udc *udc);
-static void udc_disable(struct pxa_udc *udc);
-
/**
* pxa_udc_vbus_session - Called by external transceiver to enable/disable udc
* @_gadget: usb gadget
diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
index 2218f91e92a6..5a2d845fb1a6 100644
--- a/drivers/usb/gadget/udc/renesas_usb3.c
+++ b/drivers/usb/gadget/udc/renesas_usb3.c
@@ -10,6 +10,7 @@
#include <linux/delay.h>
#include <linux/err.h>
+#include <linux/extcon.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <linux/module.h>
@@ -37,6 +38,9 @@
#define USB3_USB_INT_ENA_2 0x22c
#define USB3_STUP_DAT_0 0x230
#define USB3_STUP_DAT_1 0x234
+#define USB3_USB_OTG_STA 0x268
+#define USB3_USB_OTG_INT_STA 0x26c
+#define USB3_USB_OTG_INT_ENA 0x270
#define USB3_P0_MOD 0x280
#define USB3_P0_CON 0x288
#define USB3_P0_STA 0x28c
@@ -124,6 +128,9 @@
/* USB_INT_ENA_2 and USB_INT_STA_2 */
#define USB_INT_2_PIPE(n) BIT(n)
+/* USB_OTG_STA, USB_OTG_INT_STA and USB_OTG_INT_ENA */
+#define USB_OTG_IDMON BIT(4)
+
/* P0_MOD */
#define P0_MOD_DIR BIT(6)
@@ -257,6 +264,8 @@ struct renesas_usb3 {
struct usb_gadget gadget;
struct usb_gadget_driver *driver;
+ struct extcon_dev *extcon;
+ struct work_struct extcon_work;
struct renesas_usb3_ep *usb3_ep;
int num_usb3_eps;
@@ -269,6 +278,8 @@ struct renesas_usb3 {
u8 ep0_buf[USB3_EP0_BUF_SIZE];
bool softconnect;
bool workaround_for_vbus;
+ bool extcon_host; /* check id and set EXTCON_USB_HOST */
+ bool extcon_usb; /* check vbus and set EXTCON_USB */
};
#define gadget_to_renesas_usb3(_gadget) \
@@ -332,6 +343,15 @@ static int usb3_wait(struct renesas_usb3 *usb3, u32 reg, u32 mask,
return -EBUSY;
}
+static void renesas_usb3_extcon_work(struct work_struct *work)
+{
+ struct renesas_usb3 *usb3 = container_of(work, struct renesas_usb3,
+ extcon_work);
+
+ extcon_set_state_sync(usb3->extcon, EXTCON_USB_HOST, usb3->extcon_host);
+ extcon_set_state_sync(usb3->extcon, EXTCON_USB, usb3->extcon_usb);
+}
+
static void usb3_enable_irq_1(struct renesas_usb3 *usb3, u32 bits)
{
usb3_set_bit(usb3, bits, USB3_USB_INT_ENA_1);
@@ -352,6 +372,11 @@ static void usb3_disable_pipe_irq(struct renesas_usb3 *usb3, int num)
usb3_clear_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2);
}
+static bool usb3_is_host(struct renesas_usb3 *usb3)
+{
+ return !(usb3_read(usb3, USB3_DRD_CON) & DRD_CON_PERI_CON);
+}
+
static void usb3_init_axi_bridge(struct renesas_usb3 *usb3)
{
/* Set AXI_INT */
@@ -362,10 +387,6 @@ static void usb3_init_axi_bridge(struct renesas_usb3 *usb3)
static void usb3_init_epc_registers(struct renesas_usb3 *usb3)
{
- /* FIXME: How to change host / peripheral mode as well? */
- usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON);
- usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON);
-
usb3_write(usb3, ~0, USB3_USB_INT_STA_1);
usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG);
}
@@ -531,18 +552,70 @@ static void usb3_check_vbus(struct renesas_usb3 *usb3)
if (usb3->workaround_for_vbus) {
usb3_connect(usb3);
} else {
- if (usb3_read(usb3, USB3_USB_STA) & USB_STA_VBUS_STA)
+ usb3->extcon_usb = !!(usb3_read(usb3, USB3_USB_STA) &
+ USB_STA_VBUS_STA);
+ if (usb3->extcon_usb)
usb3_connect(usb3);
else
usb3_disconnect(usb3);
+
+ schedule_work(&usb3->extcon_work);
}
}
+static void usb3_set_mode(struct renesas_usb3 *usb3, bool host)
+{
+ if (host)
+ usb3_clear_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON);
+ else
+ usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON);
+}
+
+static void usb3_vbus_out(struct renesas_usb3 *usb3, bool enable)
+{
+ if (enable)
+ usb3_set_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON);
+ else
+ usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON);
+}
+
+static void usb3_mode_config(struct renesas_usb3 *usb3, bool host, bool a_dev)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&usb3->lock, flags);
+ usb3_set_mode(usb3, host);
+ usb3_vbus_out(usb3, a_dev);
+ if (!host && a_dev) /* for A-Peripheral */
+ usb3_connect(usb3);
+ spin_unlock_irqrestore(&usb3->lock, flags);
+}
+
+static bool usb3_is_a_device(struct renesas_usb3 *usb3)
+{
+ return !(usb3_read(usb3, USB3_USB_OTG_STA) & USB_OTG_IDMON);
+}
+
+static void usb3_check_id(struct renesas_usb3 *usb3)
+{
+ usb3->extcon_host = usb3_is_a_device(usb3);
+
+ if (usb3->extcon_host)
+ usb3_mode_config(usb3, true, true);
+ else
+ usb3_mode_config(usb3, false, false);
+
+ schedule_work(&usb3->extcon_work);
+}
+
static void renesas_usb3_init_controller(struct renesas_usb3 *usb3)
{
usb3_init_axi_bridge(usb3);
usb3_init_epc_registers(usb3);
+ usb3_write(usb3, USB_OTG_IDMON, USB3_USB_OTG_INT_STA);
+ usb3_write(usb3, USB_OTG_IDMON, USB3_USB_OTG_INT_ENA);
+ usb3_check_id(usb3);
usb3_check_vbus(usb3);
}
@@ -551,6 +624,7 @@ static void renesas_usb3_stop_controller(struct renesas_usb3 *usb3)
usb3_disconnect(usb3);
usb3_write(usb3, 0, USB3_P0_INT_ENA);
usb3_write(usb3, 0, USB3_PN_INT_ENA);
+ usb3_write(usb3, 0, USB3_USB_OTG_INT_ENA);
usb3_write(usb3, 0, USB3_USB_INT_ENA_1);
usb3_write(usb3, 0, USB3_USB_INT_ENA_2);
usb3_write(usb3, 0, USB3_AXI_INT_ENA);
@@ -1474,10 +1548,22 @@ static void usb3_irq_epc_int_2(struct renesas_usb3 *usb3, u32 int_sta_2)
}
}
+static void usb3_irq_idmon_change(struct renesas_usb3 *usb3)
+{
+ usb3_check_id(usb3);
+}
+
+static void usb3_irq_otg_int(struct renesas_usb3 *usb3, u32 otg_int_sta)
+{
+ if (otg_int_sta & USB_OTG_IDMON)
+ usb3_irq_idmon_change(usb3);
+}
+
static void usb3_irq_epc(struct renesas_usb3 *usb3)
{
u32 int_sta_1 = usb3_read(usb3, USB3_USB_INT_STA_1);
u32 int_sta_2 = usb3_read(usb3, USB3_USB_INT_STA_2);
+ u32 otg_int_sta = usb3_read(usb3, USB3_USB_OTG_INT_STA);
int_sta_1 &= usb3_read(usb3, USB3_USB_INT_ENA_1);
if (int_sta_1) {
@@ -1488,6 +1574,12 @@ static void usb3_irq_epc(struct renesas_usb3 *usb3)
int_sta_2 &= usb3_read(usb3, USB3_USB_INT_ENA_2);
if (int_sta_2)
usb3_irq_epc_int_2(usb3, int_sta_2);
+
+ otg_int_sta &= usb3_read(usb3, USB3_USB_OTG_INT_ENA);
+ if (otg_int_sta) {
+ usb3_write(usb3, otg_int_sta, USB3_USB_OTG_INT_STA);
+ usb3_irq_otg_int(usb3, otg_int_sta);
+ }
}
static irqreturn_t renesas_usb3_irq(int irq, void *_usb3)
@@ -1756,11 +1848,49 @@ static const struct usb_gadget_ops renesas_usb3_gadget_ops = {
.set_selfpowered = renesas_usb3_set_selfpowered,
};
+static ssize_t role_store(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
+ bool new_mode_is_host;
+
+ if (!usb3->driver)
+ return -ENODEV;
+
+ if (!strncmp(buf, "host", strlen("host")))
+ new_mode_is_host = true;
+ else if (!strncmp(buf, "peripheral", strlen("peripheral")))
+ new_mode_is_host = false;
+ else
+ return -EINVAL;
+
+ if (new_mode_is_host == usb3_is_host(usb3))
+ return -EINVAL;
+
+ usb3_mode_config(usb3, new_mode_is_host, usb3_is_a_device(usb3));
+
+ return count;
+}
+
+static ssize_t role_show(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct renesas_usb3 *usb3 = dev_get_drvdata(dev);
+
+ if (!usb3->driver)
+ return -ENODEV;
+
+ return sprintf(buf, "%s\n", usb3_is_host(usb3) ? "host" : "peripheral");
+}
+static DEVICE_ATTR_RW(role);
+
/*------- platform_driver ------------------------------------------------*/
static int renesas_usb3_remove(struct platform_device *pdev)
{
struct renesas_usb3 *usb3 = platform_get_drvdata(pdev);
+ device_remove_file(&pdev->dev, &dev_attr_role);
+
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
@@ -1894,6 +2024,12 @@ static const struct of_device_id usb3_of_match[] = {
};
MODULE_DEVICE_TABLE(of, usb3_of_match);
+static const unsigned int renesas_usb3_cable[] = {
+ EXTCON_USB,
+ EXTCON_USB_HOST,
+ EXTCON_NONE,
+};
+
static int renesas_usb3_probe(struct platform_device *pdev)
{
struct renesas_usb3 *usb3;
@@ -1937,6 +2073,17 @@ static int renesas_usb3_probe(struct platform_device *pdev)
if (ret < 0)
return ret;
+ INIT_WORK(&usb3->extcon_work, renesas_usb3_extcon_work);
+ usb3->extcon = devm_extcon_dev_allocate(&pdev->dev, renesas_usb3_cable);
+ if (IS_ERR(usb3->extcon))
+ return PTR_ERR(usb3->extcon);
+
+ ret = devm_extcon_dev_register(&pdev->dev, usb3->extcon);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Failed to register extcon\n");
+ return ret;
+ }
+
/* for ep0 handling */
usb3->ep0_req = __renesas_usb3_ep_alloc_request(GFP_KERNEL);
if (!usb3->ep0_req)
@@ -1946,6 +2093,10 @@ static int renesas_usb3_probe(struct platform_device *pdev)
if (ret < 0)
goto err_add_udc;
+ ret = device_create_file(&pdev->dev, &dev_attr_role);
+ if (ret < 0)
+ goto err_dev_create;
+
usb3->workaround_for_vbus = priv->workaround_for_vbus;
pm_runtime_enable(&pdev->dev);
@@ -1955,6 +2106,9 @@ static int renesas_usb3_probe(struct platform_device *pdev)
return 0;
+err_dev_create:
+ usb_del_gadget_udc(&usb3->gadget);
+
err_add_udc:
__renesas_usb3_ep_free_request(usb3->ep0_req);