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path: root/drivers/usb/chipidea/udc.c
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Diffstat (limited to 'drivers/usb/chipidea/udc.c')
-rw-r--r--drivers/usb/chipidea/udc.c1736
1 files changed, 912 insertions, 824 deletions
diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c
index 51f96942dc5..b8125aa64ad 100644
--- a/drivers/usb/chipidea/udc.c
+++ b/drivers/usb/chipidea/udc.c
@@ -13,25 +13,22 @@
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dmapool.h>
-#include <linux/dma-mapping.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/irq.h>
+#include <linux/err.h>
+#include <linux/irqreturn.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
-#include <linux/usb/otg.h>
+#include <linux/usb/otg-fsm.h>
#include <linux/usb/chipidea.h>
#include "ci.h"
#include "udc.h"
#include "bits.h"
#include "debug.h"
+#include "otg.h"
+#include "otg_fsm.h"
/* control endpoint description */
static const struct usb_endpoint_descriptor
@@ -66,34 +63,33 @@ static inline int hw_ep_bit(int num, int dir)
return num + (dir ? 16 : 0);
}
-static inline int ep_to_bit(struct ci13xxx *udc, int n)
+static inline int ep_to_bit(struct ci_hdrc *ci, int n)
{
- int fill = 16 - udc->hw_ep_max / 2;
+ int fill = 16 - ci->hw_ep_max / 2;
- if (n >= udc->hw_ep_max / 2)
+ if (n >= ci->hw_ep_max / 2)
n += fill;
return n;
}
/**
- * hw_device_state: enables/disables interrupts & starts/stops device (execute
- * without interruption)
+ * hw_device_state: enables/disables interrupts (execute without interruption)
* @dma: 0 => disable, !0 => enable and set dma engine
*
* This function returns an error code
*/
-static int hw_device_state(struct ci13xxx *udc, u32 dma)
+static int hw_device_state(struct ci_hdrc *ci, u32 dma)
{
if (dma) {
- hw_write(udc, OP_ENDPTLISTADDR, ~0, dma);
+ hw_write(ci, OP_ENDPTLISTADDR, ~0, dma);
/* interrupt, error, port change, reset, sleep/suspend */
- hw_write(udc, OP_USBINTR, ~0,
+ hw_write(ci, OP_USBINTR, ~0,
USBi_UI|USBi_UEI|USBi_PCI|USBi_URI|USBi_SLI);
- hw_write(udc, OP_USBCMD, USBCMD_RS, USBCMD_RS);
+ hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
} else {
- hw_write(udc, OP_USBCMD, USBCMD_RS, 0);
- hw_write(udc, OP_USBINTR, ~0, 0);
+ hw_write(ci, OP_USBINTR, ~0, 0);
+ hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
}
return 0;
}
@@ -105,16 +101,16 @@ static int hw_device_state(struct ci13xxx *udc, u32 dma)
*
* This function returns an error code
*/
-static int hw_ep_flush(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_flush(struct ci_hdrc *ci, int num, int dir)
{
int n = hw_ep_bit(num, dir);
do {
/* flush any pending transfer */
- hw_write(udc, OP_ENDPTFLUSH, BIT(n), BIT(n));
- while (hw_read(udc, OP_ENDPTFLUSH, BIT(n)))
+ hw_write(ci, OP_ENDPTFLUSH, ~0, BIT(n));
+ while (hw_read(ci, OP_ENDPTFLUSH, BIT(n)))
cpu_relax();
- } while (hw_read(udc, OP_ENDPTSTAT, BIT(n)));
+ } while (hw_read(ci, OP_ENDPTSTAT, BIT(n)));
return 0;
}
@@ -126,10 +122,10 @@ static int hw_ep_flush(struct ci13xxx *udc, int num, int dir)
*
* This function returns an error code
*/
-static int hw_ep_disable(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_disable(struct ci_hdrc *ci, int num, int dir)
{
- hw_ep_flush(udc, num, dir);
- hw_write(udc, OP_ENDPTCTRL + num,
+ hw_ep_flush(ci, num, dir);
+ hw_write(ci, OP_ENDPTCTRL + num,
dir ? ENDPTCTRL_TXE : ENDPTCTRL_RXE, 0);
return 0;
}
@@ -142,13 +138,13 @@ static int hw_ep_disable(struct ci13xxx *udc, int num, int dir)
*
* This function returns an error code
*/
-static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
+static int hw_ep_enable(struct ci_hdrc *ci, int num, int dir, int type)
{
u32 mask, data;
if (dir) {
mask = ENDPTCTRL_TXT; /* type */
- data = type << ffs_nr(mask);
+ data = type << __ffs(mask);
mask |= ENDPTCTRL_TXS; /* unstall */
mask |= ENDPTCTRL_TXR; /* reset data toggle */
@@ -157,7 +153,7 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
data |= ENDPTCTRL_TXE;
} else {
mask = ENDPTCTRL_RXT; /* type */
- data = type << ffs_nr(mask);
+ data = type << __ffs(mask);
mask |= ENDPTCTRL_RXS; /* unstall */
mask |= ENDPTCTRL_RXR; /* reset data toggle */
@@ -165,7 +161,7 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
mask |= ENDPTCTRL_RXE; /* enable */
data |= ENDPTCTRL_RXE;
}
- hw_write(udc, OP_ENDPTCTRL + num, mask, data);
+ hw_write(ci, OP_ENDPTCTRL + num, mask, data);
return 0;
}
@@ -176,24 +172,11 @@ static int hw_ep_enable(struct ci13xxx *udc, int num, int dir, int type)
*
* This function returns 1 if endpoint halted
*/
-static int hw_ep_get_halt(struct ci13xxx *udc, int num, int dir)
+static int hw_ep_get_halt(struct ci_hdrc *ci, int num, int dir)
{
u32 mask = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
- return hw_read(udc, OP_ENDPTCTRL + num, mask) ? 1 : 0;
-}
-
-/**
- * hw_test_and_clear_setup_status: test & clear setup status (execute without
- * interruption)
- * @n: endpoint number
- *
- * This function returns setup status
- */
-static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n)
-{
- n = ep_to_bit(udc, n);
- return hw_test_and_clear(udc, OP_ENDPTSETUPSTAT, BIT(n));
+ return hw_read(ci, OP_ENDPTCTRL + num, mask) ? 1 : 0;
}
/**
@@ -204,18 +187,18 @@ static int hw_test_and_clear_setup_status(struct ci13xxx *udc, int n)
*
* This function returns an error code
*/
-static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl)
+static int hw_ep_prime(struct ci_hdrc *ci, int num, int dir, int is_ctrl)
{
int n = hw_ep_bit(num, dir);
- if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
+ if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
return -EAGAIN;
- hw_write(udc, OP_ENDPTPRIME, BIT(n), BIT(n));
+ hw_write(ci, OP_ENDPTPRIME, ~0, BIT(n));
- while (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
+ while (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
cpu_relax();
- if (is_ctrl && dir == RX && hw_read(udc, OP_ENDPTSETUPSTAT, BIT(num)))
+ if (is_ctrl && dir == RX && hw_read(ci, OP_ENDPTSETUPSTAT, BIT(num)))
return -EAGAIN;
/* status shoult be tested according with manual but it doesn't work */
@@ -231,20 +214,20 @@ static int hw_ep_prime(struct ci13xxx *udc, int num, int dir, int is_ctrl)
*
* This function returns an error code
*/
-static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
+static int hw_ep_set_halt(struct ci_hdrc *ci, int num, int dir, int value)
{
if (value != 0 && value != 1)
return -EINVAL;
do {
- enum ci13xxx_regs reg = OP_ENDPTCTRL + num;
+ enum ci_hw_regs reg = OP_ENDPTCTRL + num;
u32 mask_xs = dir ? ENDPTCTRL_TXS : ENDPTCTRL_RXS;
u32 mask_xr = dir ? ENDPTCTRL_TXR : ENDPTCTRL_RXR;
/* data toggle - reserved for EP0 but it's in ESS */
- hw_write(udc, reg, mask_xs|mask_xr,
+ hw_write(ci, reg, mask_xs|mask_xr,
value ? mask_xs : mask_xr);
- } while (value != hw_ep_get_halt(udc, num, dir));
+ } while (value != hw_ep_get_halt(ci, num, dir));
return 0;
}
@@ -254,30 +237,10 @@ static int hw_ep_set_halt(struct ci13xxx *udc, int num, int dir, int value)
*
* This function returns true if high speed port
*/
-static int hw_port_is_high_speed(struct ci13xxx *udc)
-{
- return udc->hw_bank.lpm ? hw_read(udc, OP_DEVLC, DEVLC_PSPD) :
- hw_read(udc, OP_PORTSC, PORTSC_HSP);
-}
-
-/**
- * hw_read_intr_enable: returns interrupt enable register
- *
- * This function returns register data
- */
-static u32 hw_read_intr_enable(struct ci13xxx *udc)
-{
- return hw_read(udc, OP_USBINTR, ~0);
-}
-
-/**
- * hw_read_intr_status: returns interrupt status register
- *
- * This function returns register data
- */
-static u32 hw_read_intr_status(struct ci13xxx *udc)
+static int hw_port_is_high_speed(struct ci_hdrc *ci)
{
- return hw_read(udc, OP_USBSTS, ~0);
+ return ci->hw_bank.lpm ? hw_read(ci, OP_DEVLC, DEVLC_PSPD) :
+ hw_read(ci, OP_PORTSC, PORTSC_HSP);
}
/**
@@ -287,10 +250,10 @@ static u32 hw_read_intr_status(struct ci13xxx *udc)
*
* This function returns complete status
*/
-static int hw_test_and_clear_complete(struct ci13xxx *udc, int n)
+static int hw_test_and_clear_complete(struct ci_hdrc *ci, int n)
{
- n = ep_to_bit(udc, n);
- return hw_test_and_clear(udc, OP_ENDPTCOMPLETE, BIT(n));
+ n = ep_to_bit(ci, n);
+ return hw_test_and_clear(ci, OP_ENDPTCOMPLETE, BIT(n));
}
/**
@@ -299,11 +262,11 @@ static int hw_test_and_clear_complete(struct ci13xxx *udc, int n)
*
* This function returns active interrutps
*/
-static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc)
+static u32 hw_test_and_clear_intr_active(struct ci_hdrc *ci)
{
- u32 reg = hw_read_intr_status(udc) & hw_read_intr_enable(udc);
+ u32 reg = hw_read_intr_status(ci) & hw_read_intr_enable(ci);
- hw_write(udc, OP_USBSTS, ~0, reg);
+ hw_write(ci, OP_USBSTS, ~0, reg);
return reg;
}
@@ -313,9 +276,9 @@ static u32 hw_test_and_clear_intr_active(struct ci13xxx *udc)
*
* This function returns guard value
*/
-static int hw_test_and_clear_setup_guard(struct ci13xxx *udc)
+static int hw_test_and_clear_setup_guard(struct ci_hdrc *ci)
{
- return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, 0);
+ return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, 0);
}
/**
@@ -324,9 +287,9 @@ static int hw_test_and_clear_setup_guard(struct ci13xxx *udc)
*
* This function returns guard value
*/
-static int hw_test_and_set_setup_guard(struct ci13xxx *udc)
+static int hw_test_and_set_setup_guard(struct ci_hdrc *ci)
{
- return hw_test_and_write(udc, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
+ return hw_test_and_write(ci, OP_USBCMD, USBCMD_SUTW, USBCMD_SUTW);
}
/**
@@ -336,10 +299,10 @@ static int hw_test_and_set_setup_guard(struct ci13xxx *udc)
* This function explicitly sets the address, without the "USBADRA" (advance)
* feature, which is not supported by older versions of the controller.
*/
-static void hw_usb_set_address(struct ci13xxx *udc, u8 value)
+static void hw_usb_set_address(struct ci_hdrc *ci, u8 value)
{
- hw_write(udc, OP_DEVICEADDR, DEVICEADDR_USBADR,
- value << ffs_nr(DEVICEADDR_USBADR));
+ hw_write(ci, OP_DEVICEADDR, DEVICEADDR_USBADR,
+ value << __ffs(DEVICEADDR_USBADR));
}
/**
@@ -348,21 +311,21 @@ static void hw_usb_set_address(struct ci13xxx *udc, u8 value)
*
* This function returns an error code
*/
-static int hw_usb_reset(struct ci13xxx *udc)
+static int hw_usb_reset(struct ci_hdrc *ci)
{
- hw_usb_set_address(udc, 0);
+ hw_usb_set_address(ci, 0);
/* ESS flushes only at end?!? */
- hw_write(udc, OP_ENDPTFLUSH, ~0, ~0);
+ hw_write(ci, OP_ENDPTFLUSH, ~0, ~0);
/* clear setup token semaphores */
- hw_write(udc, OP_ENDPTSETUPSTAT, 0, 0);
+ hw_write(ci, OP_ENDPTSETUPSTAT, 0, 0);
/* clear complete status */
- hw_write(udc, OP_ENDPTCOMPLETE, 0, 0);
+ hw_write(ci, OP_ENDPTCOMPLETE, 0, 0);
/* wait until all bits cleared */
- while (hw_read(udc, OP_ENDPTPRIME, ~0))
+ while (hw_read(ci, OP_ENDPTPRIME, ~0))
udelay(10); /* not RTOS friendly */
/* reset all endpoints ? */
@@ -376,11 +339,68 @@ static int hw_usb_reset(struct ci13xxx *udc)
/******************************************************************************
* UTIL block
*****************************************************************************/
+
+static int add_td_to_list(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq,
+ unsigned length)
+{
+ int i;
+ u32 temp;
+ struct td_node *lastnode, *node = kzalloc(sizeof(struct td_node),
+ GFP_ATOMIC);
+
+ if (node == NULL)
+ return -ENOMEM;
+
+ node->ptr = dma_pool_alloc(hwep->td_pool, GFP_ATOMIC,
+ &node->dma);
+ if (node->ptr == NULL) {
+ kfree(node);
+ return -ENOMEM;
+ }
+
+ memset(node->ptr, 0, sizeof(struct ci_hw_td));
+ node->ptr->token = cpu_to_le32(length << __ffs(TD_TOTAL_BYTES));
+ node->ptr->token &= cpu_to_le32(TD_TOTAL_BYTES);
+ node->ptr->token |= cpu_to_le32(TD_STATUS_ACTIVE);
+ if (hwep->type == USB_ENDPOINT_XFER_ISOC && hwep->dir == TX) {
+ u32 mul = hwreq->req.length / hwep->ep.maxpacket;
+
+ if (hwreq->req.length == 0
+ || hwreq->req.length % hwep->ep.maxpacket)
+ mul++;
+ node->ptr->token |= mul << __ffs(TD_MULTO);
+ }
+
+ temp = (u32) (hwreq->req.dma + hwreq->req.actual);
+ if (length) {
+ node->ptr->page[0] = cpu_to_le32(temp);
+ for (i = 1; i < TD_PAGE_COUNT; i++) {
+ u32 page = temp + i * CI_HDRC_PAGE_SIZE;
+ page &= ~TD_RESERVED_MASK;
+ node->ptr->page[i] = cpu_to_le32(page);
+ }
+ }
+
+ hwreq->req.actual += length;
+
+ if (!list_empty(&hwreq->tds)) {
+ /* get the last entry */
+ lastnode = list_entry(hwreq->tds.prev,
+ struct td_node, td);
+ lastnode->ptr->next = cpu_to_le32(node->dma);
+ }
+
+ INIT_LIST_HEAD(&node->td);
+ list_add_tail(&node->td, &hwreq->tds);
+
+ return 0;
+}
+
/**
* _usb_addr: calculates endpoint address from direction & number
* @ep: endpoint
*/
-static inline u8 _usb_addr(struct ci13xxx_ep *ep)
+static inline u8 _usb_addr(struct ci_hw_ep *ep)
{
return ((ep->dir == TX) ? USB_ENDPOINT_DIR_MASK : 0) | ep->num;
}
@@ -388,168 +408,233 @@ static inline u8 _usb_addr(struct ci13xxx_ep *ep)
/**
* _hardware_queue: configures a request at hardware level
* @gadget: gadget
- * @mEp: endpoint
+ * @hwep: endpoint
*
* This function returns an error code
*/
-static int _hardware_enqueue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
+static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
{
- struct ci13xxx *udc = mEp->udc;
- unsigned i;
+ struct ci_hdrc *ci = hwep->ci;
int ret = 0;
- unsigned length = mReq->req.length;
+ unsigned rest = hwreq->req.length;
+ int pages = TD_PAGE_COUNT;
+ struct td_node *firstnode, *lastnode;
/* don't queue twice */
- if (mReq->req.status == -EALREADY)
+ if (hwreq->req.status == -EALREADY)
return -EALREADY;
- mReq->req.status = -EALREADY;
-
- if (mReq->req.zero && length && (length % mEp->ep.maxpacket == 0)) {
- mReq->zptr = dma_pool_alloc(mEp->td_pool, GFP_ATOMIC,
- &mReq->zdma);
- if (mReq->zptr == NULL)
- return -ENOMEM;
+ hwreq->req.status = -EALREADY;
- memset(mReq->zptr, 0, sizeof(*mReq->zptr));
- mReq->zptr->next = TD_TERMINATE;
- mReq->zptr->token = TD_STATUS_ACTIVE;
- if (!mReq->req.no_interrupt)
- mReq->zptr->token |= TD_IOC;
- }
- ret = usb_gadget_map_request(&udc->gadget, &mReq->req, mEp->dir);
+ ret = usb_gadget_map_request(&ci->gadget, &hwreq->req, hwep->dir);
if (ret)
return ret;
/*
- * TD configuration
- * TODO - handle requests which spawns into several TDs
+ * The first buffer could be not page aligned.
+ * In that case we have to span into one extra td.
*/
- memset(mReq->ptr, 0, sizeof(*mReq->ptr));
- mReq->ptr->token = length << ffs_nr(TD_TOTAL_BYTES);
- mReq->ptr->token &= TD_TOTAL_BYTES;
- mReq->ptr->token |= TD_STATUS_ACTIVE;
- if (mReq->zptr) {
- mReq->ptr->next = mReq->zdma;
- } else {
- mReq->ptr->next = TD_TERMINATE;
- if (!mReq->req.no_interrupt)
- mReq->ptr->token |= TD_IOC;
+ if (hwreq->req.dma % PAGE_SIZE)
+ pages--;
+
+ if (rest == 0)
+ add_td_to_list(hwep, hwreq, 0);
+
+ while (rest > 0) {
+ unsigned count = min(hwreq->req.length - hwreq->req.actual,
+ (unsigned)(pages * CI_HDRC_PAGE_SIZE));
+ add_td_to_list(hwep, hwreq, count);
+ rest -= count;
}
- mReq->ptr->page[0] = mReq->req.dma;
- for (i = 1; i < 5; i++)
- mReq->ptr->page[i] =
- (mReq->req.dma + i * CI13XXX_PAGE_SIZE) & ~TD_RESERVED_MASK;
-
- if (!list_empty(&mEp->qh.queue)) {
- struct ci13xxx_req *mReqPrev;
- int n = hw_ep_bit(mEp->num, mEp->dir);
+
+ if (hwreq->req.zero && hwreq->req.length
+ && (hwreq->req.length % hwep->ep.maxpacket == 0))
+ add_td_to_list(hwep, hwreq, 0);
+
+ firstnode = list_first_entry(&hwreq->tds, struct td_node, td);
+
+ lastnode = list_entry(hwreq->tds.prev,
+ struct td_node, td);
+
+ lastnode->ptr->next = cpu_to_le32(TD_TERMINATE);
+ if (!hwreq->req.no_interrupt)
+ lastnode->ptr->token |= cpu_to_le32(TD_IOC);
+ wmb();
+
+ hwreq->req.actual = 0;
+ if (!list_empty(&hwep->qh.queue)) {
+ struct ci_hw_req *hwreqprev;
+ int n = hw_ep_bit(hwep->num, hwep->dir);
int tmp_stat;
+ struct td_node *prevlastnode;
+ u32 next = firstnode->dma & TD_ADDR_MASK;
- mReqPrev = list_entry(mEp->qh.queue.prev,
- struct ci13xxx_req, queue);
- if (mReqPrev->zptr)
- mReqPrev->zptr->next = mReq->dma & TD_ADDR_MASK;
- else
- mReqPrev->ptr->next = mReq->dma & TD_ADDR_MASK;
+ hwreqprev = list_entry(hwep->qh.queue.prev,
+ struct ci_hw_req, queue);
+ prevlastnode = list_entry(hwreqprev->tds.prev,
+ struct td_node, td);
+
+ prevlastnode->ptr->next = cpu_to_le32(next);
wmb();
- if (hw_read(udc, OP_ENDPTPRIME, BIT(n)))
+ if (hw_read(ci, OP_ENDPTPRIME, BIT(n)))
goto done;
do {
- hw_write(udc, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
- tmp_stat = hw_read(udc, OP_ENDPTSTAT, BIT(n));
- } while (!hw_read(udc, OP_USBCMD, USBCMD_ATDTW));
- hw_write(udc, OP_USBCMD, USBCMD_ATDTW, 0);
+ hw_write(ci, OP_USBCMD, USBCMD_ATDTW, USBCMD_ATDTW);
+ tmp_stat = hw_read(ci, OP_ENDPTSTAT, BIT(n));
+ } while (!hw_read(ci, OP_USBCMD, USBCMD_ATDTW));
+ hw_write(ci, OP_USBCMD, USBCMD_ATDTW, 0);
if (tmp_stat)
goto done;
}
/* QH configuration */
- mEp->qh.ptr->td.next = mReq->dma; /* TERMINATE = 0 */
- mEp->qh.ptr->td.token &= ~TD_STATUS; /* clear status */
- mEp->qh.ptr->cap |= QH_ZLT;
+ hwep->qh.ptr->td.next = cpu_to_le32(firstnode->dma);
+ hwep->qh.ptr->td.token &=
+ cpu_to_le32(~(TD_STATUS_HALTED|TD_STATUS_ACTIVE));
+
+ if (hwep->type == USB_ENDPOINT_XFER_ISOC && hwep->dir == RX) {
+ u32 mul = hwreq->req.length / hwep->ep.maxpacket;
+
+ if (hwreq->req.length == 0
+ || hwreq->req.length % hwep->ep.maxpacket)
+ mul++;
+ hwep->qh.ptr->cap |= mul << __ffs(QH_MULT);
+ }
wmb(); /* synchronize before ep prime */
- ret = hw_ep_prime(udc, mEp->num, mEp->dir,
- mEp->type == USB_ENDPOINT_XFER_CONTROL);
+ ret = hw_ep_prime(ci, hwep->num, hwep->dir,
+ hwep->type == USB_ENDPOINT_XFER_CONTROL);
done:
return ret;
}
+/*
+ * free_pending_td: remove a pending request for the endpoint
+ * @hwep: endpoint
+ */
+static void free_pending_td(struct ci_hw_ep *hwep)
+{
+ struct td_node *pending = hwep->pending_td;
+
+ dma_pool_free(hwep->td_pool, pending->ptr, pending->dma);
+ hwep->pending_td = NULL;
+ kfree(pending);
+}
+
/**
* _hardware_dequeue: handles a request at hardware level
* @gadget: gadget
- * @mEp: endpoint
+ * @hwep: endpoint
*
* This function returns an error code
*/
-static int _hardware_dequeue(struct ci13xxx_ep *mEp, struct ci13xxx_req *mReq)
+static int _hardware_dequeue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq)
{
- if (mReq->req.status != -EALREADY)
+ u32 tmptoken;
+ struct td_node *node, *tmpnode;
+ unsigned remaining_length;
+ unsigned actual = hwreq->req.length;
+
+ if (hwreq->req.status != -EALREADY)
return -EINVAL;
- if ((TD_STATUS_ACTIVE & mReq->ptr->token) != 0)
- return -EBUSY;
+ hwreq->req.status = 0;
- if (mReq->zptr) {
- if ((TD_STATUS_ACTIVE & mReq->zptr->token) != 0)
+ list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) {
+ tmptoken = le32_to_cpu(node->ptr->token);
+ if ((TD_STATUS_ACTIVE & tmptoken) != 0) {
+ hwreq->req.status = -EALREADY;
return -EBUSY;
- dma_pool_free(mEp->td_pool, mReq->zptr, mReq->zdma);
- mReq->zptr = NULL;
- }
+ }
- mReq->req.status = 0;
+ remaining_length = (tmptoken & TD_TOTAL_BYTES);
+ remaining_length >>= __ffs(TD_TOTAL_BYTES);
+ actual -= remaining_length;
- usb_gadget_unmap_request(&mEp->udc->gadget, &mReq->req, mEp->dir);
+ hwreq->req.status = tmptoken & TD_STATUS;
+ if ((TD_STATUS_HALTED & hwreq->req.status)) {
+ hwreq->req.status = -EPIPE;
+ break;
+ } else if ((TD_STATUS_DT_ERR & hwreq->req.status)) {
+ hwreq->req.status = -EPROTO;
+ break;
+ } else if ((TD_STATUS_TR_ERR & hwreq->req.status)) {
+ hwreq->req.status = -EILSEQ;
+ break;
+ }
- mReq->req.status = mReq->ptr->token & TD_STATUS;
- if ((TD_STATUS_HALTED & mReq->req.status) != 0)
- mReq->req.status = -1;
- else if ((TD_STATUS_DT_ERR & mReq->req.status) != 0)
- mReq->req.status = -1;
- else if ((TD_STATUS_TR_ERR & mReq->req.status) != 0)
- mReq->req.status = -1;
+ if (remaining_length) {
+ if (hwep->dir) {
+ hwreq->req.status = -EPROTO;
+ break;
+ }
+ }
+ /*
+ * As the hardware could still address the freed td
+ * which will run the udc unusable, the cleanup of the
+ * td has to be delayed by one.
+ */
+ if (hwep->pending_td)
+ free_pending_td(hwep);
+
+ hwep->pending_td = node;
+ list_del_init(&node->td);
+ }
+
+ usb_gadget_unmap_request(&hwep->ci->gadget, &hwreq->req, hwep->dir);
+
+ hwreq->req.actual += actual;
- mReq->req.actual = mReq->ptr->token & TD_TOTAL_BYTES;
- mReq->req.actual >>= ffs_nr(TD_TOTAL_BYTES);
- mReq->req.actual = mReq->req.length - mReq->req.actual;
- mReq->req.actual = mReq->req.status ? 0 : mReq->req.actual;
+ if (hwreq->req.status)
+ return hwreq->req.status;
- return mReq->req.actual;
+ return hwreq->req.actual;
}
/**
* _ep_nuke: dequeues all endpoint requests
- * @mEp: endpoint
+ * @hwep: endpoint
*
* This function returns an error code
* Caller must hold lock
*/
-static int _ep_nuke(struct ci13xxx_ep *mEp)
-__releases(mEp->lock)
-__acquires(mEp->lock)
+static int _ep_nuke(struct ci_hw_ep *hwep)
+__releases(hwep->lock)
+__acquires(hwep->lock)
{
- if (mEp == NULL)
+ struct td_node *node, *tmpnode;
+ if (hwep == NULL)
return -EINVAL;
- hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+ hw_ep_flush(hwep->ci, hwep->num, hwep->dir);
- while (!list_empty(&mEp->qh.queue)) {
+ while (!list_empty(&hwep->qh.queue)) {
/* pop oldest request */
- struct ci13xxx_req *mReq = \
- list_entry(mEp->qh.queue.next,
- struct ci13xxx_req, queue);
- list_del_init(&mReq->queue);
- mReq->req.status = -ESHUTDOWN;
-
- if (mReq->req.complete != NULL) {
- spin_unlock(mEp->lock);
- mReq->req.complete(&mEp->ep, &mReq->req);
- spin_lock(mEp->lock);
+ struct ci_hw_req *hwreq = list_entry(hwep->qh.queue.next,
+ struct ci_hw_req, queue);
+
+ list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) {
+ dma_pool_free(hwep->td_pool, node->ptr, node->dma);
+ list_del_init(&node->td);
+ node->ptr = NULL;
+ kfree(node);
+ }
+
+ list_del_init(&hwreq->queue);
+ hwreq->req.status = -ESHUTDOWN;
+
+ if (hwreq->req.complete != NULL) {
+ spin_unlock(hwep->lock);
+ hwreq->req.complete(&hwep->ep, &hwreq->req);
+ spin_lock(hwep->lock);
}
}
+
+ if (hwep->pending_td)
+ free_pending_td(hwep);
+
return 0;
}
@@ -562,33 +647,30 @@ __acquires(mEp->lock)
static int _gadget_stop_activity(struct usb_gadget *gadget)
{
struct usb_ep *ep;
- struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+ struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget);
unsigned long flags;
- spin_lock_irqsave(&udc->lock, flags);
- udc->gadget.speed = USB_SPEED_UNKNOWN;
- udc->remote_wakeup = 0;
- udc->suspended = 0;
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
+ ci->gadget.speed = USB_SPEED_UNKNOWN;
+ ci->remote_wakeup = 0;
+ ci->suspended = 0;
+ spin_unlock_irqrestore(&ci->lock, flags);
/* flush all endpoints */
gadget_for_each_ep(ep, gadget) {
usb_ep_fifo_flush(ep);
}
- usb_ep_fifo_flush(&udc->ep0out->ep);
- usb_ep_fifo_flush(&udc->ep0in->ep);
-
- if (udc->driver)
- udc->driver->disconnect(gadget);
+ usb_ep_fifo_flush(&ci->ep0out->ep);
+ usb_ep_fifo_flush(&ci->ep0in->ep);
/* make sure to disable all endpoints */
gadget_for_each_ep(ep, gadget) {
usb_ep_disable(ep);
}
- if (udc->status != NULL) {
- usb_ep_free_request(&udc->ep0in->ep, udc->status);
- udc->status = NULL;
+ if (ci->status != NULL) {
+ usb_ep_free_request(&ci->ep0in->ep, ci->status);
+ ci->status = NULL;
}
return 0;
@@ -599,36 +681,41 @@ static int _gadget_stop_activity(struct usb_gadget *gadget)
*****************************************************************************/
/**
* isr_reset_handler: USB reset interrupt handler
- * @udc: UDC device
+ * @ci: UDC device
*
* This function resets USB engine after a bus reset occurred
*/
-static void isr_reset_handler(struct ci13xxx *udc)
-__releases(udc->lock)
-__acquires(udc->lock)
+static void isr_reset_handler(struct ci_hdrc *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
{
int retval;
- dbg_event(0xFF, "BUS RST", 0);
+ spin_unlock(&ci->lock);
+ if (ci->gadget.speed != USB_SPEED_UNKNOWN) {
+ if (ci->driver)
+ ci->driver->disconnect(&ci->gadget);
+ }
- spin_unlock(&udc->lock);
- retval = _gadget_stop_activity(&udc->gadget);
+ retval = _gadget_stop_activity(&ci->gadget);
if (retval)
goto done;
- retval = hw_usb_reset(udc);
+ retval = hw_usb_reset(ci);
if (retval)
goto done;
- udc->status = usb_ep_alloc_request(&udc->ep0in->ep, GFP_ATOMIC);
- if (udc->status == NULL)
+ ci->status = usb_ep_alloc_request(&ci->ep0in->ep, GFP_ATOMIC);
+ if (ci->status == NULL)
retval = -ENOMEM;
+ usb_gadget_set_state(&ci->gadget, USB_STATE_DEFAULT);
+
done:
- spin_lock(&udc->lock);
+ spin_lock(&ci->lock);
if (retval)
- dev_err(udc->dev, "error: %i\n", retval);
+ dev_err(ci->dev, "error: %i\n", retval);
}
/**
@@ -648,28 +735,82 @@ static void isr_get_status_complete(struct usb_ep *ep, struct usb_request *req)
}
/**
+ * _ep_queue: queues (submits) an I/O request to an endpoint
+ *
+ * Caller must hold lock
+ */
+static int _ep_queue(struct usb_ep *ep, struct usb_request *req,
+ gfp_t __maybe_unused gfp_flags)
+{
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
+ struct ci_hw_req *hwreq = container_of(req, struct ci_hw_req, req);
+ struct ci_hdrc *ci = hwep->ci;
+ int retval = 0;
+
+ if (ep == NULL || req == NULL || hwep->ep.desc == NULL)
+ return -EINVAL;
+
+ if (hwep->type == USB_ENDPOINT_XFER_CONTROL) {
+ if (req->length)
+ hwep = (ci->ep0_dir == RX) ?
+ ci->ep0out : ci->ep0in;
+ if (!list_empty(&hwep->qh.queue)) {
+ _ep_nuke(hwep);
+ retval = -EOVERFLOW;
+ dev_warn(hwep->ci->dev, "endpoint ctrl %X nuked\n",
+ _usb_addr(hwep));
+ }
+ }
+
+ if (usb_endpoint_xfer_isoc(hwep->ep.desc) &&
+ hwreq->req.length > (1 + hwep->ep.mult) * hwep->ep.maxpacket) {
+ dev_err(hwep->ci->dev, "request length too big for isochronous\n");
+ return -EMSGSIZE;
+ }
+
+ /* first nuke then test link, e.g. previous status has not sent */
+ if (!list_empty(&hwreq->queue)) {
+ dev_err(hwep->ci->dev, "request already in queue\n");
+ return -EBUSY;
+ }
+
+ /* push request */
+ hwreq->req.status = -EINPROGRESS;
+ hwreq->req.actual = 0;
+
+ retval = _hardware_enqueue(hwep, hwreq);
+
+ if (retval == -EALREADY)
+ retval = 0;
+ if (!retval)
+ list_add_tail(&hwreq->queue, &hwep->qh.queue);
+
+ return retval;
+}
+
+/**
* isr_get_status_response: get_status request response
- * @udc: udc struct
+ * @ci: ci struct
* @setup: setup request packet
*
* This function returns an error code
*/
-static int isr_get_status_response(struct ci13xxx *udc,
+static int isr_get_status_response(struct ci_hdrc *ci,
struct usb_ctrlrequest *setup)
-__releases(mEp->lock)
-__acquires(mEp->lock)
+__releases(hwep->lock)
+__acquires(hwep->lock)
{
- struct ci13xxx_ep *mEp = udc->ep0in;
+ struct ci_hw_ep *hwep = ci->ep0in;
struct usb_request *req = NULL;
gfp_t gfp_flags = GFP_ATOMIC;
int dir, num, retval;
- if (mEp == NULL || setup == NULL)
+ if (hwep == NULL || setup == NULL)
return -EINVAL;
- spin_unlock(mEp->lock);
- req = usb_ep_alloc_request(&mEp->ep, gfp_flags);
- spin_lock(mEp->lock);
+ spin_unlock(hwep->lock);
+ req = usb_ep_alloc_request(&hwep->ep, gfp_flags);
+ spin_lock(hwep->lock);
if (req == NULL)
return -ENOMEM;
@@ -683,20 +824,17 @@ __acquires(mEp->lock)
if ((setup->bRequestType & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
/* Assume that device is bus powered for now. */
- *(u16 *)req->buf = udc->remote_wakeup << 1;
- retval = 0;
+ *(u16 *)req->buf = ci->remote_wakeup << 1;
} else if ((setup->bRequestType & USB_RECIP_MASK) \
== USB_RECIP_ENDPOINT) {
dir = (le16_to_cpu(setup->wIndex) & USB_ENDPOINT_DIR_MASK) ?
TX : RX;
num = le16_to_cpu(setup->wIndex) & USB_ENDPOINT_NUMBER_MASK;
- *(u16 *)req->buf = hw_ep_get_halt(udc, num, dir);
+ *(u16 *)req->buf = hw_ep_get_halt(ci, num, dir);
}
/* else do nothing; reserved for future use */
- spin_unlock(mEp->lock);
- retval = usb_ep_queue(&mEp->ep, req, gfp_flags);
- spin_lock(mEp->lock);
+ retval = _ep_queue(&hwep->ep, req, gfp_flags);
if (retval)
goto err_free_buf;
@@ -705,9 +843,9 @@ __acquires(mEp->lock)
err_free_buf:
kfree(req->buf);
err_free_req:
- spin_unlock(mEp->lock);
- usb_ep_free_request(&mEp->ep, req);
- spin_lock(mEp->lock);
+ spin_unlock(hwep->lock);
+ usb_ep_free_request(&hwep->ep, req);
+ spin_lock(hwep->lock);
return retval;
}
@@ -722,271 +860,275 @@ __acquires(mEp->lock)
static void
isr_setup_status_complete(struct usb_ep *ep, struct usb_request *req)
{
- struct ci13xxx *udc = req->context;
+ struct ci_hdrc *ci = req->context;
unsigned long flags;
- if (udc->setaddr) {
- hw_usb_set_address(udc, udc->address);
- udc->setaddr = false;
+ if (ci->setaddr) {
+ hw_usb_set_address(ci, ci->address);
+ ci->setaddr = false;
+ if (ci->address)
+ usb_gadget_set_state(&ci->gadget, USB_STATE_ADDRESS);
}
- spin_lock_irqsave(&udc->lock, flags);
- if (udc->test_mode)
- hw_port_test_set(udc, udc->test_mode);
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_lock_irqsave(&ci->lock, flags);
+ if (ci->test_mode)
+ hw_port_test_set(ci, ci->test_mode);
+ spin_unlock_irqrestore(&ci->lock, flags);
}
/**
* isr_setup_status_phase: queues the status phase of a setup transation
- * @udc: udc struct
+ * @ci: ci struct
*
* This function returns an error code
*/
-static int isr_setup_status_phase(struct ci13xxx *udc)
-__releases(mEp->lock)
-__acquires(mEp->lock)
+static int isr_setup_status_phase(struct ci_hdrc *ci)
{
int retval;
- struct ci13xxx_ep *mEp;
+ struct ci_hw_ep *hwep;
- mEp = (udc->ep0_dir == TX) ? udc->ep0out : udc->ep0in;
- udc->status->context = udc;
- udc->status->complete = isr_setup_status_complete;
+ hwep = (ci->ep0_dir == TX) ? ci->ep0out : ci->ep0in;
+ ci->status->context = ci;
+ ci->status->complete = isr_setup_status_complete;
- spin_unlock(mEp->lock);
- retval = usb_ep_queue(&mEp->ep, udc->status, GFP_ATOMIC);
- spin_lock(mEp->lock);
+ retval = _ep_queue(&hwep->ep, ci->status, GFP_ATOMIC);
return retval;
}
/**
* isr_tr_complete_low: transaction complete low level handler
- * @mEp: endpoint
+ * @hwep: endpoint
*
* This function returns an error code
* Caller must hold lock
*/
-static int isr_tr_complete_low(struct ci13xxx_ep *mEp)
-__releases(mEp->lock)
-__acquires(mEp->lock)
+static int isr_tr_complete_low(struct ci_hw_ep *hwep)
+__releases(hwep->lock)
+__acquires(hwep->lock)
{
- struct ci13xxx_req *mReq, *mReqTemp;
- struct ci13xxx_ep *mEpTemp = mEp;
- int uninitialized_var(retval);
-
- if (list_empty(&mEp->qh.queue))
- return -EINVAL;
+ struct ci_hw_req *hwreq, *hwreqtemp;
+ struct ci_hw_ep *hweptemp = hwep;
+ int retval = 0;
- list_for_each_entry_safe(mReq, mReqTemp, &mEp->qh.queue,
+ list_for_each_entry_safe(hwreq, hwreqtemp, &hwep->qh.queue,
queue) {
- retval = _hardware_dequeue(mEp, mReq);
+ retval = _hardware_dequeue(hwep, hwreq);
if (retval < 0)
break;
- list_del_init(&mReq->queue);
- dbg_done(_usb_addr(mEp), mReq->ptr->token, retval);
- if (mReq->req.complete != NULL) {
- spin_unlock(mEp->lock);
- if ((mEp->type == USB_ENDPOINT_XFER_CONTROL) &&
- mReq->req.length)
- mEpTemp = mEp->udc->ep0in;
- mReq->req.complete(&mEpTemp->ep, &mReq->req);
- spin_lock(mEp->lock);
+ list_del_init(&hwreq->queue);
+ if (hwreq->req.complete != NULL) {
+ spin_unlock(hwep->lock);
+ if ((hwep->type == USB_ENDPOINT_XFER_CONTROL) &&
+ hwreq->req.length)
+ hweptemp = hwep->ci->ep0in;
+ hwreq->req.complete(&hweptemp->ep, &hwreq->req);
+ spin_lock(hwep->lock);
}
}
if (retval == -EBUSY)
retval = 0;
- if (retval < 0)
- dbg_event(_usb_addr(mEp), "DONE", retval);
return retval;
}
/**
- * isr_tr_complete_handler: transaction complete interrupt handler
- * @udc: UDC descriptor
+ * isr_setup_packet_handler: setup packet handler
+ * @ci: UDC descriptor
*
- * This function handles traffic events
+ * This function handles setup packet
*/
-static void isr_tr_complete_handler(struct ci13xxx *udc)
-__releases(udc->lock)
-__acquires(udc->lock)
+static void isr_setup_packet_handler(struct ci_hdrc *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
{
- unsigned i;
+ struct ci_hw_ep *hwep = &ci->ci_hw_ep[0];
+ struct usb_ctrlrequest req;
+ int type, num, dir, err = -EINVAL;
u8 tmode = 0;
- for (i = 0; i < udc->hw_ep_max; i++) {
- struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
- int type, num, dir, err = -EINVAL;
- struct usb_ctrlrequest req;
-
- if (mEp->ep.desc == NULL)
- continue; /* not configured */
-
- if (hw_test_and_clear_complete(udc, i)) {
- err = isr_tr_complete_low(mEp);
- if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
- if (err > 0) /* needs status phase */
- err = isr_setup_status_phase(udc);
- if (err < 0) {
- dbg_event(_usb_addr(mEp),
- "ERROR", err);
- spin_unlock(&udc->lock);
- if (usb_ep_set_halt(&mEp->ep))
- dev_err(udc->dev,
- "error: ep_set_halt\n");
- spin_lock(&udc->lock);
- }
- }
- }
-
- if (mEp->type != USB_ENDPOINT_XFER_CONTROL ||
- !hw_test_and_clear_setup_status(udc, i))
- continue;
-
- if (i != 0) {
- dev_warn(udc->dev, "ctrl traffic at endpoint %d\n", i);
- continue;
- }
-
- /*
- * Flush data and handshake transactions of previous
- * setup packet.
- */
- _ep_nuke(udc->ep0out);
- _ep_nuke(udc->ep0in);
-
- /* read_setup_packet */
- do {
- hw_test_and_set_setup_guard(udc);
- memcpy(&req, &mEp->qh.ptr->setup, sizeof(req));
- } while (!hw_test_and_clear_setup_guard(udc));
+ /*
+ * Flush data and handshake transactions of previous
+ * setup packet.
+ */
+ _ep_nuke(ci->ep0out);
+ _ep_nuke(ci->ep0in);
- type = req.bRequestType;
+ /* read_setup_packet */
+ do {
+ hw_test_and_set_setup_guard(ci);
+ memcpy(&req, &hwep->qh.ptr->setup, sizeof(req));
+ } while (!hw_test_and_clear_setup_guard(ci));
- udc->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
+ type = req.bRequestType;
- dbg_setup(_usb_addr(mEp), &req);
+ ci->ep0_dir = (type & USB_DIR_IN) ? TX : RX;
- switch (req.bRequest) {
- case USB_REQ_CLEAR_FEATURE:
- if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
- le16_to_cpu(req.wValue) ==
- USB_ENDPOINT_HALT) {
- if (req.wLength != 0)
- break;
- num = le16_to_cpu(req.wIndex);
- dir = num & USB_ENDPOINT_DIR_MASK;
- num &= USB_ENDPOINT_NUMBER_MASK;
- if (dir) /* TX */
- num += udc->hw_ep_max/2;
- if (!udc->ci13xxx_ep[num].wedge) {
- spin_unlock(&udc->lock);
- err = usb_ep_clear_halt(
- &udc->ci13xxx_ep[num].ep);
- spin_lock(&udc->lock);
- if (err)
- break;
- }
- err = isr_setup_status_phase(udc);
- } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) &&
- le16_to_cpu(req.wValue) ==
- USB_DEVICE_REMOTE_WAKEUP) {
- if (req.wLength != 0)
+ switch (req.bRequest) {
+ case USB_REQ_CLEAR_FEATURE:
+ if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
+ le16_to_cpu(req.wValue) ==
+ USB_ENDPOINT_HALT) {
+ if (req.wLength != 0)
+ break;
+ num = le16_to_cpu(req.wIndex);
+ dir = num & USB_ENDPOINT_DIR_MASK;
+ num &= USB_ENDPOINT_NUMBER_MASK;
+ if (dir) /* TX */
+ num += ci->hw_ep_max / 2;
+ if (!ci->ci_hw_ep[num].wedge) {
+ spin_unlock(&ci->lock);
+ err = usb_ep_clear_halt(
+ &ci->ci_hw_ep[num].ep);
+ spin_lock(&ci->lock);
+ if (err)
break;
- udc->remote_wakeup = 0;
- err = isr_setup_status_phase(udc);
- } else {
- goto delegate;
}
- break;
- case USB_REQ_GET_STATUS:
- if (type != (USB_DIR_IN|USB_RECIP_DEVICE) &&
- type != (USB_DIR_IN|USB_RECIP_ENDPOINT) &&
- type != (USB_DIR_IN|USB_RECIP_INTERFACE))
- goto delegate;
- if (le16_to_cpu(req.wLength) != 2 ||
- le16_to_cpu(req.wValue) != 0)
+ err = isr_setup_status_phase(ci);
+ } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE) &&
+ le16_to_cpu(req.wValue) ==
+ USB_DEVICE_REMOTE_WAKEUP) {
+ if (req.wLength != 0)
break;
- err = isr_get_status_response(udc, &req);
+ ci->remote_wakeup = 0;
+ err = isr_setup_status_phase(ci);
+ } else {
+ goto delegate;
+ }
+ break;
+ case USB_REQ_GET_STATUS:
+ if (type != (USB_DIR_IN|USB_RECIP_DEVICE) &&
+ type != (USB_DIR_IN|USB_RECIP_ENDPOINT) &&
+ type != (USB_DIR_IN|USB_RECIP_INTERFACE))
+ goto delegate;
+ if (le16_to_cpu(req.wLength) != 2 ||
+ le16_to_cpu(req.wValue) != 0)
break;
- case USB_REQ_SET_ADDRESS:
- if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
- goto delegate;
- if (le16_to_cpu(req.wLength) != 0 ||
- le16_to_cpu(req.wIndex) != 0)
- break;
- udc->address = (u8)le16_to_cpu(req.wValue);
- udc->setaddr = true;
- err = isr_setup_status_phase(udc);
+ err = isr_get_status_response(ci, &req);
+ break;
+ case USB_REQ_SET_ADDRESS:
+ if (type != (USB_DIR_OUT|USB_RECIP_DEVICE))
+ goto delegate;
+ if (le16_to_cpu(req.wLength) != 0 ||
+ le16_to_cpu(req.wIndex) != 0)
break;
- case USB_REQ_SET_FEATURE:
- if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
- le16_to_cpu(req.wValue) ==
- USB_ENDPOINT_HALT) {
- if (req.wLength != 0)
- break;
- num = le16_to_cpu(req.wIndex);
- dir = num & USB_ENDPOINT_DIR_MASK;
- num &= USB_ENDPOINT_NUMBER_MASK;
- if (dir) /* TX */
- num += udc->hw_ep_max/2;
-
- spin_unlock(&udc->lock);
- err = usb_ep_set_halt(&udc->ci13xxx_ep[num].ep);
- spin_lock(&udc->lock);
- if (!err)
- isr_setup_status_phase(udc);
- } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) {
- if (req.wLength != 0)
- break;
- switch (le16_to_cpu(req.wValue)) {
- case USB_DEVICE_REMOTE_WAKEUP:
- udc->remote_wakeup = 1;
- err = isr_setup_status_phase(udc);
+ ci->address = (u8)le16_to_cpu(req.wValue);
+ ci->setaddr = true;
+ err = isr_setup_status_phase(ci);
+ break;
+ case USB_REQ_SET_FEATURE:
+ if (type == (USB_DIR_OUT|USB_RECIP_ENDPOINT) &&
+ le16_to_cpu(req.wValue) ==
+ USB_ENDPOINT_HALT) {
+ if (req.wLength != 0)
+ break;
+ num = le16_to_cpu(req.wIndex);
+ dir = num & USB_ENDPOINT_DIR_MASK;
+ num &= USB_ENDPOINT_NUMBER_MASK;
+ if (dir) /* TX */
+ num += ci->hw_ep_max / 2;
+
+ spin_unlock(&ci->lock);
+ err = usb_ep_set_halt(&ci->ci_hw_ep[num].ep);
+ spin_lock(&ci->lock);
+ if (!err)
+ isr_setup_status_phase(ci);
+ } else if (type == (USB_DIR_OUT|USB_RECIP_DEVICE)) {
+ if (req.wLength != 0)
+ break;
+ switch (le16_to_cpu(req.wValue)) {
+ case USB_DEVICE_REMOTE_WAKEUP:
+ ci->remote_wakeup = 1;
+ err = isr_setup_status_phase(ci);
+ break;
+ case USB_DEVICE_TEST_MODE:
+ tmode = le16_to_cpu(req.wIndex) >> 8;
+ switch (tmode) {
+ case TEST_J:
+ case TEST_K:
+ case TEST_SE0_NAK:
+ case TEST_PACKET:
+ case TEST_FORCE_EN:
+ ci->test_mode = tmode;
+ err = isr_setup_status_phase(
+ ci);
break;
- case USB_DEVICE_TEST_MODE:
- tmode = le16_to_cpu(req.wIndex) >> 8;
- switch (tmode) {
- case TEST_J:
- case TEST_K:
- case TEST_SE0_NAK:
- case TEST_PACKET:
- case TEST_FORCE_EN:
- udc->test_mode = tmode;
- err = isr_setup_status_phase(
- udc);
- break;
- default:
- break;
- }
default:
- goto delegate;
+ break;
}
- } else {
+ break;
+ case USB_DEVICE_B_HNP_ENABLE:
+ if (ci_otg_is_fsm_mode(ci)) {
+ ci->gadget.b_hnp_enable = 1;
+ err = isr_setup_status_phase(
+ ci);
+ }
+ break;
+ default:
goto delegate;
}
- break;
- default:
+ } else {
+ goto delegate;
+ }
+ break;
+ default:
delegate:
- if (req.wLength == 0) /* no data phase */
- udc->ep0_dir = TX;
+ if (req.wLength == 0) /* no data phase */
+ ci->ep0_dir = TX;
- spin_unlock(&udc->lock);
- err = udc->driver->setup(&udc->gadget, &req);
- spin_lock(&udc->lock);
- break;
- }
+ spin_unlock(&ci->lock);
+ err = ci->driver->setup(&ci->gadget, &req);
+ spin_lock(&ci->lock);
+ break;
+ }
+
+ if (err < 0) {
+ spin_unlock(&ci->lock);
+ if (usb_ep_set_halt(&hwep->ep))
+ dev_err(ci->dev, "error: ep_set_halt\n");
+ spin_lock(&ci->lock);
+ }
+}
+
+/**
+ * isr_tr_complete_handler: transaction complete interrupt handler
+ * @ci: UDC descriptor
+ *
+ * This function handles traffic events
+ */
+static void isr_tr_complete_handler(struct ci_hdrc *ci)
+__releases(ci->lock)
+__acquires(ci->lock)
+{
+ unsigned i;
+ int err;
- if (err < 0) {
- dbg_event(_usb_addr(mEp), "ERROR", err);
+ for (i = 0; i < ci->hw_ep_max; i++) {
+ struct ci_hw_ep *hwep = &ci->ci_hw_ep[i];
+
+ if (hwep->ep.desc == NULL)
+ continue; /* not configured */
- spin_unlock(&udc->lock);
- if (usb_ep_set_halt(&mEp->ep))
- dev_err(udc->dev, "error: ep_set_halt\n");
- spin_lock(&udc->lock);
+ if (hw_test_and_clear_complete(ci, i)) {
+ err = isr_tr_complete_low(hwep);
+ if (hwep->type == USB_ENDPOINT_XFER_CONTROL) {
+ if (err > 0) /* needs status phase */
+ err = isr_setup_status_phase(ci);
+ if (err < 0) {
+ spin_unlock(&ci->lock);
+ if (usb_ep_set_halt(&hwep->ep))
+ dev_err(ci->dev,
+ "error: ep_set_halt\n");
+ spin_lock(&ci->lock);
+ }
+ }
}
+
+ /* Only handle setup packet below */
+ if (i == 0 &&
+ hw_test_and_clear(ci, OP_ENDPTSETUPSTAT, BIT(0)))
+ isr_setup_packet_handler(ci);
}
}
@@ -1001,51 +1143,60 @@ delegate:
static int ep_enable(struct usb_ep *ep,
const struct usb_endpoint_descriptor *desc)
{
- struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
int retval = 0;
unsigned long flags;
+ u32 cap = 0;
if (ep == NULL || desc == NULL)
return -EINVAL;
- spin_lock_irqsave(mEp->lock, flags);
+ spin_lock_irqsave(hwep->lock, flags);
/* only internal SW should enable ctrl endpts */
- mEp->ep.desc = desc;
+ hwep->ep.desc = desc;
- if (!list_empty(&mEp->qh.queue))
- dev_warn(mEp->udc->dev, "enabling a non-empty endpoint!\n");
+ if (!list_empty(&hwep->qh.queue))
+ dev_warn(hwep->ci->dev, "enabling a non-empty endpoint!\n");
- mEp->dir = usb_endpoint_dir_in(desc) ? TX : RX;
- mEp->num = usb_endpoint_num(desc);
- mEp->type = usb_endpoint_type(desc);
+ hwep->dir = usb_endpoint_dir_in(desc) ? TX : RX;
+ hwep->num = usb_endpoint_num(desc);
+ hwep->type = usb_endpoint_type(desc);
- mEp->ep.maxpacket = usb_endpoint_maxp(desc);
+ hwep->ep.maxpacket = usb_endpoint_maxp(desc) & 0x07ff;
+ hwep->ep.mult = QH_ISO_MULT(usb_endpoint_maxp(desc));
- dbg_event(_usb_addr(mEp), "ENABLE", 0);
+ if (hwep->type == USB_ENDPOINT_XFER_CONTROL)
+ cap |= QH_IOS;
- mEp->qh.ptr->cap = 0;
+ cap |= QH_ZLT;
+ cap |= (hwep->ep.maxpacket << __ffs(QH_MAX_PKT)) & QH_MAX_PKT;
+ /*
+ * For ISO-TX, we set mult at QH as the largest value, and use
+ * MultO at TD as real mult value.
+ */
+ if (hwep->type == USB_ENDPOINT_XFER_ISOC && hwep->dir == TX)
+ cap |= 3 << __ffs(QH_MULT);
- if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
- mEp->qh.ptr->cap |= QH_IOS;
- else if (mEp->type == USB_ENDPOINT_XFER_ISOC)
- mEp->qh.ptr->cap &= ~QH_MULT;
- else
- mEp->qh.ptr->cap &= ~QH_ZLT;
+ hwep->qh.ptr->cap = cpu_to_le32(cap);
- mEp->qh.ptr->cap |=
- (mEp->ep.maxpacket << ffs_nr(QH_MAX_PKT)) & QH_MAX_PKT;
- mEp->qh.ptr->td.next |= TD_TERMINATE; /* needed? */
+ hwep->qh.ptr->td.next |= cpu_to_le32(TD_TERMINATE); /* needed? */
+
+ if (hwep->num != 0 && hwep->type == USB_ENDPOINT_XFER_CONTROL) {
+ dev_err(hwep->ci->dev, "Set control xfer at non-ep0\n");
+ retval = -EINVAL;
+ }
/*
* Enable endpoints in the HW other than ep0 as ep0
* is always enabled
*/
- if (mEp->num)
- retval |= hw_ep_enable(mEp->udc, mEp->num, mEp->dir, mEp->type);
+ if (hwep->num)
+ retval |= hw_ep_enable(hwep->ci, hwep->num, hwep->dir,
+ hwep->type);
- spin_unlock_irqrestore(mEp->lock, flags);
+ spin_unlock_irqrestore(hwep->lock, flags);
return retval;
}
@@ -1056,34 +1207,32 @@ static int ep_enable(struct usb_ep *ep,
*/
static int ep_disable(struct usb_ep *ep)
{
- struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
int direction, retval = 0;
unsigned long flags;
if (ep == NULL)
return -EINVAL;
- else if (mEp->ep.desc == NULL)
+ else if (hwep->ep.desc == NULL)
return -EBUSY;
- spin_lock_irqsave(mEp->lock, flags);
+ spin_lock_irqsave(hwep->lock, flags);
/* only internal SW should disable ctrl endpts */
- direction = mEp->dir;
+ direction = hwep->dir;
do {
- dbg_event(_usb_addr(mEp), "DISABLE", 0);
-
- retval |= _ep_nuke(mEp);
- retval |= hw_ep_disable(mEp->udc, mEp->num, mEp->dir);
+ retval |= _ep_nuke(hwep);
+ retval |= hw_ep_disable(hwep->ci, hwep->num, hwep->dir);
- if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
- mEp->dir = (mEp->dir == TX) ? RX : TX;
+ if (hwep->type == USB_ENDPOINT_XFER_CONTROL)
+ hwep->dir = (hwep->dir == TX) ? RX : TX;
- } while (mEp->dir != direction);
+ } while (hwep->dir != direction);
- mEp->ep.desc = NULL;
+ hwep->ep.desc = NULL;
- spin_unlock_irqrestore(mEp->lock, flags);
+ spin_unlock_irqrestore(hwep->lock, flags);
return retval;
}
@@ -1094,27 +1243,18 @@ static int ep_disable(struct usb_ep *ep)
*/
static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
{
- struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
- struct ci13xxx_req *mReq = NULL;
+ struct ci_hw_req *hwreq = NULL;
if (ep == NULL)
return NULL;
- mReq = kzalloc(sizeof(struct ci13xxx_req), gfp_flags);
- if (mReq != NULL) {
- INIT_LIST_HEAD(&mReq->queue);
-
- mReq->ptr = dma_pool_alloc(mEp->td_pool, gfp_flags,
- &mReq->dma);
- if (mReq->ptr == NULL) {
- kfree(mReq);
- mReq = NULL;
- }
+ hwreq = kzalloc(sizeof(struct ci_hw_req), gfp_flags);
+ if (hwreq != NULL) {
+ INIT_LIST_HEAD(&hwreq->queue);
+ INIT_LIST_HEAD(&hwreq->tds);
}
- dbg_event(_usb_addr(mEp), "ALLOC", mReq == NULL);
-
- return (mReq == NULL) ? NULL : &mReq->req;
+ return (hwreq == NULL) ? NULL : &hwreq->req;
}
/**
@@ -1124,26 +1264,30 @@ static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
*/
static void ep_free_request(struct usb_ep *ep, struct usb_request *req)
{
- struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
- struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
+ struct ci_hw_req *hwreq = container_of(req, struct ci_hw_req, req);
+ struct td_node *node, *tmpnode;
unsigned long flags;
if (ep == NULL || req == NULL) {
return;
- } else if (!list_empty(&mReq->queue)) {
- dev_err(mEp->udc->dev, "freeing queued request\n");
+ } else if (!list_empty(&hwreq->queue)) {
+ dev_err(hwep->ci->dev, "freeing queued request\n");
return;
}
- spin_lock_irqsave(mEp->lock, flags);
+ spin_lock_irqsave(hwep->lock, flags);
- if (mReq->ptr)
- dma_pool_free(mEp->td_pool, mReq->ptr, mReq->dma);
- kfree(mReq);
+ list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) {
+ dma_pool_free(hwep->td_pool, node->ptr, node->dma);
+ list_del_init(&node->td);
+ node->ptr = NULL;
+ kfree(node);
+ }
- dbg_event(_usb_addr(mEp), "FREE", 0);
+ kfree(hwreq);
- spin_unlock_irqrestore(mEp->lock, flags);
+ spin_unlock_irqrestore(hwep->lock, flags);
}
/**
@@ -1154,59 +1298,16 @@ static void ep_free_request(struct usb_ep *ep, struct usb_request *req)
static int ep_queue(struct usb_ep *ep, struct usb_request *req,
gfp_t __maybe_unused gfp_flags)
{
- struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
- struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
- struct ci13xxx *udc = mEp->udc;
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
int retval = 0;
unsigned long flags;
- if (ep == NULL || req == NULL || mEp->ep.desc == NULL)
+ if (ep == NULL || req == NULL || hwep->ep.desc == NULL)
return -EINVAL;
- spin_lock_irqsave(mEp->lock, flags);
-
- if (mEp->type == USB_ENDPOINT_XFER_CONTROL) {
- if (req->length)
- mEp = (udc->ep0_dir == RX) ?
- udc->ep0out : udc->ep0in;
- if (!list_empty(&mEp->qh.queue)) {
- _ep_nuke(mEp);
- retval = -EOVERFLOW;
- dev_warn(mEp->udc->dev, "endpoint ctrl %X nuked\n",
- _usb_addr(mEp));
- }
- }
-
- /* first nuke then test link, e.g. previous status has not sent */
- if (!list_empty(&mReq->queue)) {
- retval = -EBUSY;
- dev_err(mEp->udc->dev, "request already in queue\n");
- goto done;
- }
-
- if (req->length > 4 * CI13XXX_PAGE_SIZE) {
- req->length = 4 * CI13XXX_PAGE_SIZE;
- retval = -EMSGSIZE;
- dev_warn(mEp->udc->dev, "request length truncated\n");
- }
-
- dbg_queue(_usb_addr(mEp), req, retval);
-
- /* push request */
- mReq->req.status = -EINPROGRESS;
- mReq->req.actual = 0;
-
- retval = _hardware_enqueue(mEp, mReq);
-
- if (retval == -EALREADY) {
- dbg_event(_usb_addr(mEp), "QUEUE", retval);
- retval = 0;
- }
- if (!retval)
- list_add_tail(&mReq->queue, &mEp->qh.queue);
-
- done:
- spin_unlock_irqrestore(mEp->lock, flags);
+ spin_lock_irqsave(hwep->lock, flags);
+ retval = _ep_queue(ep, req, gfp_flags);
+ spin_unlock_irqrestore(hwep->lock, flags);
return retval;
}
@@ -1217,35 +1318,40 @@ static int ep_queue(struct usb_ep *ep, struct usb_request *req,
*/
static int ep_dequeue(struct usb_ep *ep, struct usb_request *req)
{
- struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
- struct ci13xxx_req *mReq = container_of(req, struct ci13xxx_req, req);
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
+ struct ci_hw_req *hwreq = container_of(req, struct ci_hw_req, req);
unsigned long flags;
+ struct td_node *node, *tmpnode;
- if (ep == NULL || req == NULL || mReq->req.status != -EALREADY ||
- mEp->ep.desc == NULL || list_empty(&mReq->queue) ||
- list_empty(&mEp->qh.queue))
+ if (ep == NULL || req == NULL || hwreq->req.status != -EALREADY ||
+ hwep->ep.desc == NULL || list_empty(&hwreq->queue) ||
+ list_empty(&hwep->qh.queue))
return -EINVAL;
- spin_lock_irqsave(mEp->lock, flags);
+ spin_lock_irqsave(hwep->lock, flags);
- dbg_event(_usb_addr(mEp), "DEQUEUE", 0);
+ hw_ep_flush(hwep->ci, hwep->num, hwep->dir);
- hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+ list_for_each_entry_safe(node, tmpnode, &hwreq->tds, td) {
+ dma_pool_free(hwep->td_pool, node->ptr, node->dma);
+ list_del(&node->td);
+ kfree(node);
+ }
/* pop request */
- list_del_init(&mReq->queue);
+ list_del_init(&hwreq->queue);
- usb_gadget_unmap_request(&mEp->udc->gadget, req, mEp->dir);
+ usb_gadget_unmap_request(&hwep->ci->gadget, req, hwep->dir);
req->status = -ECONNRESET;
- if (mReq->req.complete != NULL) {
- spin_unlock(mEp->lock);
- mReq->req.complete(&mEp->ep, &mReq->req);
- spin_lock(mEp->lock);
+ if (hwreq->req.complete != NULL) {
+ spin_unlock(hwep->lock);
+ hwreq->req.complete(&hwep->ep, &hwreq->req);
+ spin_lock(hwep->lock);
}
- spin_unlock_irqrestore(mEp->lock, flags);
+ spin_unlock_irqrestore(hwep->lock, flags);
return 0;
}
@@ -1256,38 +1362,40 @@ static int ep_dequeue(struct usb_ep *ep, struct usb_request *req)
*/
static int ep_set_halt(struct usb_ep *ep, int value)
{
- struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
int direction, retval = 0;
unsigned long flags;
- if (ep == NULL || mEp->ep.desc == NULL)
+ if (ep == NULL || hwep->ep.desc == NULL)
return -EINVAL;
- spin_lock_irqsave(mEp->lock, flags);
+ if (usb_endpoint_xfer_isoc(hwep->ep.desc))
+ return -EOPNOTSUPP;
+
+ spin_lock_irqsave(hwep->lock, flags);
#ifndef STALL_IN
/* g_file_storage MS compliant but g_zero fails chapter 9 compliance */
- if (value && mEp->type == USB_ENDPOINT_XFER_BULK && mEp->dir == TX &&
- !list_empty(&mEp->qh.queue)) {
- spin_unlock_irqrestore(mEp->lock, flags);
+ if (value && hwep->type == USB_ENDPOINT_XFER_BULK && hwep->dir == TX &&
+ !list_empty(&hwep->qh.queue)) {
+ spin_unlock_irqrestore(hwep->lock, flags);
return -EAGAIN;
}
#endif
- direction = mEp->dir;
+ direction = hwep->dir;
do {
- dbg_event(_usb_addr(mEp), "HALT", value);
- retval |= hw_ep_set_halt(mEp->udc, mEp->num, mEp->dir, value);
+ retval |= hw_ep_set_halt(hwep->ci, hwep->num, hwep->dir, value);
if (!value)
- mEp->wedge = 0;
+ hwep->wedge = 0;
- if (mEp->type == USB_ENDPOINT_XFER_CONTROL)
- mEp->dir = (mEp->dir == TX) ? RX : TX;
+ if (hwep->type == USB_ENDPOINT_XFER_CONTROL)
+ hwep->dir = (hwep->dir == TX) ? RX : TX;
- } while (mEp->dir != direction);
+ } while (hwep->dir != direction);
- spin_unlock_irqrestore(mEp->lock, flags);
+ spin_unlock_irqrestore(hwep->lock, flags);
return retval;
}
@@ -1298,18 +1406,15 @@ static int ep_set_halt(struct usb_ep *ep, int value)
*/
static int ep_set_wedge(struct usb_ep *ep)
{
- struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
unsigned long flags;
- if (ep == NULL || mEp->ep.desc == NULL)
+ if (ep == NULL || hwep->ep.desc == NULL)
return -EINVAL;
- spin_lock_irqsave(mEp->lock, flags);
-
- dbg_event(_usb_addr(mEp), "WEDGE", 0);
- mEp->wedge = 1;
-
- spin_unlock_irqrestore(mEp->lock, flags);
+ spin_lock_irqsave(hwep->lock, flags);
+ hwep->wedge = 1;
+ spin_unlock_irqrestore(hwep->lock, flags);
return usb_ep_set_halt(ep);
}
@@ -1321,20 +1426,19 @@ static int ep_set_wedge(struct usb_ep *ep)
*/
static void ep_fifo_flush(struct usb_ep *ep)
{
- struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep);
+ struct ci_hw_ep *hwep = container_of(ep, struct ci_hw_ep, ep);
unsigned long flags;
if (ep == NULL) {
- dev_err(mEp->udc->dev, "%02X: -EINVAL\n", _usb_addr(mEp));
+ dev_err(hwep->ci->dev, "%02X: -EINVAL\n", _usb_addr(hwep));
return;
}
- spin_lock_irqsave(mEp->lock, flags);
+ spin_lock_irqsave(hwep->lock, flags);
- dbg_event(_usb_addr(mEp), "FFLUSH", 0);
- hw_ep_flush(mEp->udc, mEp->num, mEp->dir);
+ hw_ep_flush(hwep->ci, hwep->num, hwep->dir);
- spin_unlock_irqrestore(mEp->lock, flags);
+ spin_unlock_irqrestore(hwep->lock, flags);
}
/**
@@ -1356,72 +1460,91 @@ static const struct usb_ep_ops usb_ep_ops = {
/******************************************************************************
* GADGET block
*****************************************************************************/
-static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active)
+static int ci_udc_vbus_session(struct usb_gadget *_gadget, int is_active)
{
- struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+ struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
unsigned long flags;
int gadget_ready = 0;
- if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS))
- return -EOPNOTSUPP;
-
- spin_lock_irqsave(&udc->lock, flags);
- udc->vbus_active = is_active;
- if (udc->driver)
+ spin_lock_irqsave(&ci->lock, flags);
+ ci->vbus_active = is_active;
+ if (ci->driver)
gadget_ready = 1;
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
if (gadget_ready) {
if (is_active) {
pm_runtime_get_sync(&_gadget->dev);
- hw_device_reset(udc, USBMODE_CM_DC);
- hw_device_state(udc, udc->ep0out->qh.dma);
+ hw_device_reset(ci, USBMODE_CM_DC);
+ hw_device_state(ci, ci->ep0out->qh.dma);
+ usb_gadget_set_state(_gadget, USB_STATE_POWERED);
} else {
- hw_device_state(udc, 0);
- if (udc->udc_driver->notify_event)
- udc->udc_driver->notify_event(udc,
- CI13XXX_CONTROLLER_STOPPED_EVENT);
- _gadget_stop_activity(&udc->gadget);
+ if (ci->driver)
+ ci->driver->disconnect(&ci->gadget);
+ hw_device_state(ci, 0);
+ if (ci->platdata->notify_event)
+ ci->platdata->notify_event(ci,
+ CI_HDRC_CONTROLLER_STOPPED_EVENT);
+ _gadget_stop_activity(&ci->gadget);
pm_runtime_put_sync(&_gadget->dev);
+ usb_gadget_set_state(_gadget, USB_STATE_NOTATTACHED);
}
}
return 0;
}
-static int ci13xxx_wakeup(struct usb_gadget *_gadget)
+static int ci_udc_wakeup(struct usb_gadget *_gadget)
{
- struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+ struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
unsigned long flags;
int ret = 0;
- spin_lock_irqsave(&udc->lock, flags);
- if (!udc->remote_wakeup) {
+ spin_lock_irqsave(&ci->lock, flags);
+ if (!ci->remote_wakeup) {
ret = -EOPNOTSUPP;
goto out;
}
- if (!hw_read(udc, OP_PORTSC, PORTSC_SUSP)) {
+ if (!hw_read(ci, OP_PORTSC, PORTSC_SUSP)) {
ret = -EINVAL;
goto out;
}
- hw_write(udc, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
+ hw_write(ci, OP_PORTSC, PORTSC_FPR, PORTSC_FPR);
out:
- spin_unlock_irqrestore(&udc->lock, flags);
+ spin_unlock_irqrestore(&ci->lock, flags);
return ret;
}
-static int ci13xxx_vbus_draw(struct usb_gadget *_gadget, unsigned mA)
+static int ci_udc_vbus_draw(struct usb_gadget *_gadget, unsigned ma)
{
- struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget);
+ struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
- if (udc->transceiver)
- return usb_phy_set_power(udc->transceiver, mA);
+ if (ci->transceiver)
+ return usb_phy_set_power(ci->transceiver, ma);
return -ENOTSUPP;
}
-static int ci13xxx_start(struct usb_gadget *gadget,
+/* Change Data+ pullup status
+ * this func is used by usb_gadget_connect/disconnet
+ */
+static int ci_udc_pullup(struct usb_gadget *_gadget, int is_on)
+{
+ struct ci_hdrc *ci = container_of(_gadget, struct ci_hdrc, gadget);
+
+ if (!ci->vbus_active)
+ return -EOPNOTSUPP;
+
+ if (is_on)
+ hw_write(ci, OP_USBCMD, USBCMD_RS, USBCMD_RS);
+ else
+ hw_write(ci, OP_USBCMD, USBCMD_RS, 0);
+
+ return 0;
+}
+
+static int ci_udc_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver);
-static int ci13xxx_stop(struct usb_gadget *gadget,
+static int ci_udc_stop(struct usb_gadget *gadget,
struct usb_gadget_driver *driver);
/**
* Device operations part of the API to the USB controller hardware,
@@ -1429,40 +1552,46 @@ static int ci13xxx_stop(struct usb_gadget *gadget,
* Check "usb_gadget.h" for details
*/
static const struct usb_gadget_ops usb_gadget_ops = {
- .vbus_session = ci13xxx_vbus_session,
- .wakeup = ci13xxx_wakeup,
- .vbus_draw = ci13xxx_vbus_draw,
- .udc_start = ci13xxx_start,
- .udc_stop = ci13xxx_stop,
+ .vbus_session = ci_udc_vbus_session,
+ .wakeup = ci_udc_wakeup,
+ .pullup = ci_udc_pullup,
+ .vbus_draw = ci_udc_vbus_draw,
+ .udc_start = ci_udc_start,
+ .udc_stop = ci_udc_stop,
};
-static int init_eps(struct ci13xxx *udc)
+static int init_eps(struct ci_hdrc *ci)
{
int retval = 0, i, j;
- for (i = 0; i < udc->hw_ep_max/2; i++)
+ for (i = 0; i < ci->hw_ep_max/2; i++)
for (j = RX; j <= TX; j++) {
- int k = i + j * udc->hw_ep_max/2;
- struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[k];
+ int k = i + j * ci->hw_ep_max/2;
+ struct ci_hw_ep *hwep = &ci->ci_hw_ep[k];
- scnprintf(mEp->name, sizeof(mEp->name), "ep%i%s", i,
+ scnprintf(hwep->name, sizeof(hwep->name), "ep%i%s", i,
(j == TX) ? "in" : "out");
- mEp->udc = udc;
- mEp->lock = &udc->lock;
- mEp->td_pool = udc->td_pool;
+ hwep->ci = ci;
+ hwep->lock = &ci->lock;
+ hwep->td_pool = ci->td_pool;
- mEp->ep.name = mEp->name;
- mEp->ep.ops = &usb_ep_ops;
- mEp->ep.maxpacket = CTRL_PAYLOAD_MAX;
+ hwep->ep.name = hwep->name;
+ hwep->ep.ops = &usb_ep_ops;
+ /*
+ * for ep0: maxP defined in desc, for other
+ * eps, maxP is set by epautoconfig() called
+ * by gadget layer
+ */
+ usb_ep_set_maxpacket_limit(&hwep->ep, (unsigned short)~0);
- INIT_LIST_HEAD(&mEp->qh.queue);
- mEp->qh.ptr = dma_pool_alloc(udc->qh_pool, GFP_KERNEL,
- &mEp->qh.dma);
- if (mEp->qh.ptr == NULL)
+ INIT_LIST_HEAD(&hwep->qh.queue);
+ hwep->qh.ptr = dma_pool_alloc(ci->qh_pool, GFP_KERNEL,
+ &hwep->qh.dma);
+ if (hwep->qh.ptr == NULL)
retval = -ENOMEM;
else
- memset(mEp->qh.ptr, 0, sizeof(*mEp->qh.ptr));
+ memset(hwep->qh.ptr, 0, sizeof(*hwep->qh.ptr));
/*
* set up shorthands for ep0 out and in endpoints,
@@ -1470,30 +1599,44 @@ static int init_eps(struct ci13xxx *udc)
*/
if (i == 0) {
if (j == RX)
- udc->ep0out = mEp;
+ ci->ep0out = hwep;
else
- udc->ep0in = mEp;
+ ci->ep0in = hwep;
+ usb_ep_set_maxpacket_limit(&hwep->ep, CTRL_PAYLOAD_MAX);
continue;
}
- list_add_tail(&mEp->ep.ep_list, &udc->gadget.ep_list);
+ list_add_tail(&hwep->ep.ep_list, &ci->gadget.ep_list);
}
return retval;
}
+static void destroy_eps(struct ci_hdrc *ci)
+{
+ int i;
+
+ for (i = 0; i < ci->hw_ep_max; i++) {
+ struct ci_hw_ep *hwep = &ci->ci_hw_ep[i];
+
+ if (hwep->pending_td)
+ free_pending_td(hwep);
+ dma_pool_free(ci->qh_pool, hwep->qh.ptr, hwep->qh.dma);
+ }
+}
+
/**
- * ci13xxx_start: register a gadget driver
+ * ci_udc_start: register a gadget driver
* @gadget: our gadget
* @driver: the driver being registered
*
* Interrupts are enabled here.
*/
-static int ci13xxx_start(struct usb_gadget *gadget,
+static int ci_udc_start(struct usb_gadget *gadget,
struct usb_gadget_driver *driver)
{
- struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+ struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget);
unsigned long flags;
int retval = -ENOMEM;
@@ -1501,63 +1644,65 @@ static int ci13xxx_start(struct usb_gadget *gadget,
return -EINVAL;
- udc->ep0out->ep.desc = &ctrl_endpt_out_desc;
- retval = usb_ep_enable(&udc->ep0out->ep);
+ ci->ep0out->ep.desc = &ctrl_endpt_out_desc;
+ retval = usb_ep_enable(&ci->ep0out->ep);
if (retval)
return retval;
- udc->ep0in->ep.desc = &ctrl_endpt_in_desc;
- retval = usb_ep_enable(&udc->ep0in->ep);
+ ci->ep0in->ep.desc = &ctrl_endpt_in_desc;
+ retval = usb_ep_enable(&ci->ep0in->ep);
if (retval)
return retval;
- spin_lock_irqsave(&udc->lock, flags);
-
- udc->driver = driver;
- pm_runtime_get_sync(&udc->gadget.dev);
- if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) {
- if (udc->vbus_active) {
- if (udc->udc_driver->flags & CI13XXX_REGS_SHARED)
- hw_device_reset(udc, USBMODE_CM_DC);
- } else {
- pm_runtime_put_sync(&udc->gadget.dev);
- goto done;
- }
+
+ ci->driver = driver;
+
+ /* Start otg fsm for B-device */
+ if (ci_otg_is_fsm_mode(ci) && ci->fsm.id) {
+ ci_hdrc_otg_fsm_start(ci);
+ return retval;
+ }
+
+ pm_runtime_get_sync(&ci->gadget.dev);
+ if (ci->vbus_active) {
+ spin_lock_irqsave(&ci->lock, flags);
+ hw_device_reset(ci, USBMODE_CM_DC);
+ } else {
+ pm_runtime_put_sync(&ci->gadget.dev);
+ return retval;
}
- retval = hw_device_state(udc, udc->ep0out->qh.dma);
+ retval = hw_device_state(ci, ci->ep0out->qh.dma);
+ spin_unlock_irqrestore(&ci->lock, flags);
if (retval)
- pm_runtime_put_sync(&udc->gadget.dev);
+ pm_runtime_put_sync(&ci->gadget.dev);
- done:
- spin_unlock_irqrestore(&udc->lock, flags);
return retval;
}
/**
- * ci13xxx_stop: unregister a gadget driver
+ * ci_udc_stop: unregister a gadget driver
*/
-static int ci13xxx_stop(struct usb_gadget *gadget,
+static int ci_udc_stop(struct usb_gadget *gadget,
struct usb_gadget_driver *driver)
{
- struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget);
+ struct ci_hdrc *ci = container_of(gadget, struct ci_hdrc, gadget);
unsigned long flags;
- spin_lock_irqsave(&udc->lock, flags);
-
- if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) ||
- udc->vbus_active) {
- hw_device_state(udc, 0);
- if (udc->udc_driver->notify_event)
- udc->udc_driver->notify_event(udc,
- CI13XXX_CONTROLLER_STOPPED_EVENT);
- udc->driver = NULL;
- spin_unlock_irqrestore(&udc->lock, flags);
- _gadget_stop_activity(&udc->gadget);
- spin_lock_irqsave(&udc->lock, flags);
- pm_runtime_put(&udc->gadget.dev);
+ spin_lock_irqsave(&ci->lock, flags);
+
+ if (ci->vbus_active) {
+ hw_device_state(ci, 0);
+ if (ci->platdata->notify_event)
+ ci->platdata->notify_event(ci,
+ CI_HDRC_CONTROLLER_STOPPED_EVENT);
+ spin_unlock_irqrestore(&ci->lock, flags);
+ _gadget_stop_activity(&ci->gadget);
+ spin_lock_irqsave(&ci->lock, flags);
+ pm_runtime_put(&ci->gadget.dev);
}
- spin_unlock_irqrestore(&udc->lock, flags);
+ ci->driver = NULL;
+ spin_unlock_irqrestore(&ci->lock, flags);
return 0;
}
@@ -1566,229 +1711,172 @@ static int ci13xxx_stop(struct usb_gadget *gadget,
* BUS block
*****************************************************************************/
/**
- * udc_irq: udc interrupt handler
+ * udc_irq: ci interrupt handler
*
* This function returns IRQ_HANDLED if the IRQ has been handled
* It locks access to registers
*/
-static irqreturn_t udc_irq(struct ci13xxx *udc)
+static irqreturn_t udc_irq(struct ci_hdrc *ci)
{
irqreturn_t retval;
u32 intr;
- if (udc == NULL)
+ if (ci == NULL)
return IRQ_HANDLED;
- spin_lock(&udc->lock);
+ spin_lock(&ci->lock);
- if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) {
- if (hw_read(udc, OP_USBMODE, USBMODE_CM) !=
+ if (ci->platdata->flags & CI_HDRC_REGS_SHARED) {
+ if (hw_read(ci, OP_USBMODE, USBMODE_CM) !=
USBMODE_CM_DC) {
- spin_unlock(&udc->lock);
+ spin_unlock(&ci->lock);
return IRQ_NONE;
}
}
- intr = hw_test_and_clear_intr_active(udc);
- dbg_interrupt(intr);
+ intr = hw_test_and_clear_intr_active(ci);
if (intr) {
/* order defines priority - do NOT change it */
if (USBi_URI & intr)
- isr_reset_handler(udc);
+ isr_reset_handler(ci);
if (USBi_PCI & intr) {
- udc->gadget.speed = hw_port_is_high_speed(udc) ?
+ ci->gadget.speed = hw_port_is_high_speed(ci) ?
USB_SPEED_HIGH : USB_SPEED_FULL;
- if (udc->suspended && udc->driver->resume) {
- spin_unlock(&udc->lock);
- udc->driver->resume(&udc->gadget);
- spin_lock(&udc->lock);
- udc->suspended = 0;
+ if (ci->suspended && ci->driver->resume) {
+ spin_unlock(&ci->lock);
+ ci->driver->resume(&ci->gadget);
+ spin_lock(&ci->lock);
+ ci->suspended = 0;
}
}
if (USBi_UI & intr)
- isr_tr_complete_handler(udc);
+ isr_tr_complete_handler(ci);
if (USBi_SLI & intr) {
- if (udc->gadget.speed != USB_SPEED_UNKNOWN &&
- udc->driver->suspend) {
- udc->suspended = 1;
- spin_unlock(&udc->lock);
- udc->driver->suspend(&udc->gadget);
- spin_lock(&udc->lock);
+ if (ci->gadget.speed != USB_SPEED_UNKNOWN &&
+ ci->driver->suspend) {
+ ci->suspended = 1;
+ spin_unlock(&ci->lock);
+ ci->driver->suspend(&ci->gadget);
+ usb_gadget_set_state(&ci->gadget,
+ USB_STATE_SUSPENDED);
+ spin_lock(&ci->lock);
}
}
retval = IRQ_HANDLED;
} else {
retval = IRQ_NONE;
}
- spin_unlock(&udc->lock);
+ spin_unlock(&ci->lock);
return retval;
}
/**
- * udc_release: driver release function
- * @dev: device
- *
- * Currently does nothing
- */
-static void udc_release(struct device *dev)
-{
-}
-
-/**
* udc_start: initialize gadget role
- * @udc: chipidea controller
+ * @ci: chipidea controller
*/
-static int udc_start(struct ci13xxx *udc)
+static int udc_start(struct ci_hdrc *ci)
{
- struct device *dev = udc->dev;
+ struct device *dev = ci->dev;
int retval = 0;
- if (!udc)
- return -EINVAL;
-
- spin_lock_init(&udc->lock);
-
- udc->gadget.ops = &usb_gadget_ops;
- udc->gadget.speed = USB_SPEED_UNKNOWN;
- udc->gadget.max_speed = USB_SPEED_HIGH;
- udc->gadget.is_otg = 0;
- udc->gadget.name = udc->udc_driver->name;
+ spin_lock_init(&ci->lock);
- INIT_LIST_HEAD(&udc->gadget.ep_list);
+ ci->gadget.ops = &usb_gadget_ops;
+ ci->gadget.speed = USB_SPEED_UNKNOWN;
+ ci->gadget.max_speed = USB_SPEED_HIGH;
+ ci->gadget.is_otg = ci->is_otg ? 1 : 0;
+ ci->gadget.name = ci->platdata->name;
- dev_set_name(&udc->gadget.dev, "gadget");
- udc->gadget.dev.dma_mask = dev->dma_mask;
- udc->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask;
- udc->gadget.dev.parent = dev;
- udc->gadget.dev.release = udc_release;
+ INIT_LIST_HEAD(&ci->gadget.ep_list);
/* alloc resources */
- udc->qh_pool = dma_pool_create("ci13xxx_qh", dev,
- sizeof(struct ci13xxx_qh),
- 64, CI13XXX_PAGE_SIZE);
- if (udc->qh_pool == NULL)
+ ci->qh_pool = dma_pool_create("ci_hw_qh", dev,
+ sizeof(struct ci_hw_qh),
+ 64, CI_HDRC_PAGE_SIZE);
+ if (ci->qh_pool == NULL)
return -ENOMEM;
- udc->td_pool = dma_pool_create("ci13xxx_td", dev,
- sizeof(struct ci13xxx_td),
- 64, CI13XXX_PAGE_SIZE);
- if (udc->td_pool == NULL) {
+ ci->td_pool = dma_pool_create("ci_hw_td", dev,
+ sizeof(struct ci_hw_td),
+ 64, CI_HDRC_PAGE_SIZE);
+ if (ci->td_pool == NULL) {
retval = -ENOMEM;
goto free_qh_pool;
}
- retval = init_eps(udc);
+ retval = init_eps(ci);
if (retval)
goto free_pools;
- udc->gadget.ep0 = &udc->ep0in->ep;
-
- udc->transceiver = usb_get_transceiver();
-
- if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) {
- if (udc->transceiver == NULL) {
- retval = -ENODEV;
- goto free_pools;
- }
- }
-
- if (!(udc->udc_driver->flags & CI13XXX_REGS_SHARED)) {
- retval = hw_device_reset(udc, USBMODE_CM_DC);
- if (retval)
- goto put_transceiver;
- }
-
- retval = device_register(&udc->gadget.dev);
- if (retval) {
- put_device(&udc->gadget.dev);
- goto put_transceiver;
- }
-
- retval = dbg_create_files(&udc->gadget.dev);
- if (retval)
- goto unreg_device;
-
- if (udc->transceiver) {
- retval = otg_set_peripheral(udc->transceiver->otg,
- &udc->gadget);
- if (retval)
- goto remove_dbg;
- }
+ ci->gadget.ep0 = &ci->ep0in->ep;
- retval = usb_add_gadget_udc(dev, &udc->gadget);
+ retval = usb_add_gadget_udc(dev, &ci->gadget);
if (retval)
- goto remove_trans;
+ goto destroy_eps;
- pm_runtime_no_callbacks(&udc->gadget.dev);
- pm_runtime_enable(&udc->gadget.dev);
+ pm_runtime_no_callbacks(&ci->gadget.dev);
+ pm_runtime_enable(&ci->gadget.dev);
return retval;
-remove_trans:
- if (udc->transceiver) {
- otg_set_peripheral(udc->transceiver->otg, &udc->gadget);
- usb_put_transceiver(udc->transceiver);
- }
-
- dev_err(dev, "error = %i\n", retval);
-remove_dbg:
- dbg_remove_files(&udc->gadget.dev);
-unreg_device:
- device_unregister(&udc->gadget.dev);
-put_transceiver:
- if (udc->transceiver)
- usb_put_transceiver(udc->transceiver);
+destroy_eps:
+ destroy_eps(ci);
free_pools:
- dma_pool_destroy(udc->td_pool);
+ dma_pool_destroy(ci->td_pool);
free_qh_pool:
- dma_pool_destroy(udc->qh_pool);
+ dma_pool_destroy(ci->qh_pool);
return retval;
}
/**
- * udc_remove: parent remove must call this to remove UDC
+ * ci_hdrc_gadget_destroy: parent remove must call this to remove UDC
*
* No interrupts active, the IRQ has been released
*/
-static void udc_stop(struct ci13xxx *udc)
+void ci_hdrc_gadget_destroy(struct ci_hdrc *ci)
{
- int i;
-
- if (udc == NULL)
+ if (!ci->roles[CI_ROLE_GADGET])
return;
- usb_del_gadget_udc(&udc->gadget);
+ usb_del_gadget_udc(&ci->gadget);
- for (i = 0; i < udc->hw_ep_max; i++) {
- struct ci13xxx_ep *mEp = &udc->ci13xxx_ep[i];
+ destroy_eps(ci);
- dma_pool_free(udc->qh_pool, mEp->qh.ptr, mEp->qh.dma);
- }
+ dma_pool_destroy(ci->td_pool);
+ dma_pool_destroy(ci->qh_pool);
+}
- dma_pool_destroy(udc->td_pool);
- dma_pool_destroy(udc->qh_pool);
+static int udc_id_switch_for_device(struct ci_hdrc *ci)
+{
+ if (ci->is_otg)
+ /* Clear and enable BSV irq */
+ hw_write_otgsc(ci, OTGSC_BSVIS | OTGSC_BSVIE,
+ OTGSC_BSVIS | OTGSC_BSVIE);
- if (udc->transceiver) {
- otg_set_peripheral(udc->transceiver->otg, NULL);
- usb_put_transceiver(udc->transceiver);
- }
- dbg_remove_files(&udc->gadget.dev);
- device_unregister(&udc->gadget.dev);
- /* my kobject is dynamic, I swear! */
- memset(&udc->gadget, 0, sizeof(udc->gadget));
+ return 0;
+}
+
+static void udc_id_switch_for_host(struct ci_hdrc *ci)
+{
+ /*
+ * host doesn't care B_SESSION_VALID event
+ * so clear and disbale BSV irq
+ */
+ if (ci->is_otg)
+ hw_write_otgsc(ci, OTGSC_BSVIE | OTGSC_BSVIS, OTGSC_BSVIS);
}
/**
* ci_hdrc_gadget_init - initialize device related bits
* ci: the controller
*
- * This function enables the gadget role, if the device is "device capable".
+ * This function initializes the gadget, if the device is "device capable".
*/
-int ci_hdrc_gadget_init(struct ci13xxx *ci)
+int ci_hdrc_gadget_init(struct ci_hdrc *ci)
{
struct ci_role_driver *rdrv;
@@ -1799,11 +1887,11 @@ int ci_hdrc_gadget_init(struct ci13xxx *ci)
if (!rdrv)
return -ENOMEM;
- rdrv->start = udc_start;
- rdrv->stop = udc_stop;
+ rdrv->start = udc_id_switch_for_device;
+ rdrv->stop = udc_id_switch_for_host;
rdrv->irq = udc_irq;
rdrv->name = "gadget";
ci->roles[CI_ROLE_GADGET] = rdrv;
- return 0;
+ return udc_start(ci);
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 15:20:28 +0000