forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
1194 lines
28 KiB
1194 lines
28 KiB
// SPDX-License-Identifier: GPL-1.0+ |
|
/* |
|
* Renesas USB driver |
|
* |
|
* Copyright (C) 2011 Renesas Solutions Corp. |
|
* Copyright (C) 2019 Renesas Electronics Corporation |
|
* Kuninori Morimoto <[email protected]> |
|
*/ |
|
#include <linux/delay.h> |
|
#include <linux/dma-mapping.h> |
|
#include <linux/io.h> |
|
#include <linux/module.h> |
|
#include <linux/platform_device.h> |
|
#include <linux/usb/ch9.h> |
|
#include <linux/usb/gadget.h> |
|
#include <linux/usb/otg.h> |
|
#include "common.h" |
|
|
|
/* |
|
* struct |
|
*/ |
|
struct usbhsg_request { |
|
struct usb_request req; |
|
struct usbhs_pkt pkt; |
|
}; |
|
|
|
#define EP_NAME_SIZE 8 |
|
struct usbhsg_gpriv; |
|
struct usbhsg_uep { |
|
struct usb_ep ep; |
|
struct usbhs_pipe *pipe; |
|
spinlock_t lock; /* protect the pipe */ |
|
|
|
char ep_name[EP_NAME_SIZE]; |
|
|
|
struct usbhsg_gpriv *gpriv; |
|
}; |
|
|
|
struct usbhsg_gpriv { |
|
struct usb_gadget gadget; |
|
struct usbhs_mod mod; |
|
|
|
struct usbhsg_uep *uep; |
|
int uep_size; |
|
|
|
struct usb_gadget_driver *driver; |
|
struct usb_phy *transceiver; |
|
bool vbus_active; |
|
|
|
u32 status; |
|
#define USBHSG_STATUS_STARTED (1 << 0) |
|
#define USBHSG_STATUS_REGISTERD (1 << 1) |
|
#define USBHSG_STATUS_WEDGE (1 << 2) |
|
#define USBHSG_STATUS_SELF_POWERED (1 << 3) |
|
#define USBHSG_STATUS_SOFT_CONNECT (1 << 4) |
|
}; |
|
|
|
struct usbhsg_recip_handle { |
|
char *name; |
|
int (*device)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl); |
|
int (*interface)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl); |
|
int (*endpoint)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl); |
|
}; |
|
|
|
/* |
|
* macro |
|
*/ |
|
#define usbhsg_priv_to_gpriv(priv) \ |
|
container_of( \ |
|
usbhs_mod_get(priv, USBHS_GADGET), \ |
|
struct usbhsg_gpriv, mod) |
|
|
|
#define __usbhsg_for_each_uep(start, pos, g, i) \ |
|
for ((i) = start; \ |
|
((i) < (g)->uep_size) && ((pos) = (g)->uep + (i)); \ |
|
(i)++) |
|
|
|
#define usbhsg_for_each_uep(pos, gpriv, i) \ |
|
__usbhsg_for_each_uep(1, pos, gpriv, i) |
|
|
|
#define usbhsg_for_each_uep_with_dcp(pos, gpriv, i) \ |
|
__usbhsg_for_each_uep(0, pos, gpriv, i) |
|
|
|
#define usbhsg_gadget_to_gpriv(g)\ |
|
container_of(g, struct usbhsg_gpriv, gadget) |
|
|
|
#define usbhsg_req_to_ureq(r)\ |
|
container_of(r, struct usbhsg_request, req) |
|
|
|
#define usbhsg_ep_to_uep(e) container_of(e, struct usbhsg_uep, ep) |
|
#define usbhsg_gpriv_to_dev(gp) usbhs_priv_to_dev((gp)->mod.priv) |
|
#define usbhsg_gpriv_to_priv(gp) ((gp)->mod.priv) |
|
#define usbhsg_gpriv_to_dcp(gp) ((gp)->uep) |
|
#define usbhsg_gpriv_to_nth_uep(gp, i) ((gp)->uep + i) |
|
#define usbhsg_uep_to_gpriv(u) ((u)->gpriv) |
|
#define usbhsg_uep_to_pipe(u) ((u)->pipe) |
|
#define usbhsg_pipe_to_uep(p) ((p)->mod_private) |
|
#define usbhsg_is_dcp(u) ((u) == usbhsg_gpriv_to_dcp((u)->gpriv)) |
|
|
|
#define usbhsg_ureq_to_pkt(u) (&(u)->pkt) |
|
#define usbhsg_pkt_to_ureq(i) \ |
|
container_of(i, struct usbhsg_request, pkt) |
|
|
|
#define usbhsg_is_not_connected(gp) ((gp)->gadget.speed == USB_SPEED_UNKNOWN) |
|
|
|
/* status */ |
|
#define usbhsg_status_init(gp) do {(gp)->status = 0; } while (0) |
|
#define usbhsg_status_set(gp, b) (gp->status |= b) |
|
#define usbhsg_status_clr(gp, b) (gp->status &= ~b) |
|
#define usbhsg_status_has(gp, b) (gp->status & b) |
|
|
|
/* |
|
* queue push/pop |
|
*/ |
|
static void __usbhsg_queue_pop(struct usbhsg_uep *uep, |
|
struct usbhsg_request *ureq, |
|
int status) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
|
struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
|
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
|
|
|
if (pipe) |
|
dev_dbg(dev, "pipe %d : queue pop\n", usbhs_pipe_number(pipe)); |
|
|
|
ureq->req.status = status; |
|
spin_unlock(usbhs_priv_to_lock(priv)); |
|
usb_gadget_giveback_request(&uep->ep, &ureq->req); |
|
spin_lock(usbhs_priv_to_lock(priv)); |
|
} |
|
|
|
static void usbhsg_queue_pop(struct usbhsg_uep *uep, |
|
struct usbhsg_request *ureq, |
|
int status) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
|
unsigned long flags; |
|
|
|
usbhs_lock(priv, flags); |
|
__usbhsg_queue_pop(uep, ureq, status); |
|
usbhs_unlock(priv, flags); |
|
} |
|
|
|
static void usbhsg_queue_done(struct usbhs_priv *priv, struct usbhs_pkt *pkt) |
|
{ |
|
struct usbhs_pipe *pipe = pkt->pipe; |
|
struct usbhsg_uep *uep = usbhsg_pipe_to_uep(pipe); |
|
struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); |
|
unsigned long flags; |
|
|
|
ureq->req.actual = pkt->actual; |
|
|
|
usbhs_lock(priv, flags); |
|
if (uep) |
|
__usbhsg_queue_pop(uep, ureq, 0); |
|
usbhs_unlock(priv, flags); |
|
} |
|
|
|
static void usbhsg_queue_push(struct usbhsg_uep *uep, |
|
struct usbhsg_request *ureq) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
|
struct usbhs_pkt *pkt = usbhsg_ureq_to_pkt(ureq); |
|
struct usb_request *req = &ureq->req; |
|
|
|
req->actual = 0; |
|
req->status = -EINPROGRESS; |
|
usbhs_pkt_push(pipe, pkt, usbhsg_queue_done, |
|
req->buf, req->length, req->zero, -1); |
|
usbhs_pkt_start(pipe); |
|
|
|
dev_dbg(dev, "pipe %d : queue push (%d)\n", |
|
usbhs_pipe_number(pipe), |
|
req->length); |
|
} |
|
|
|
/* |
|
* dma map/unmap |
|
*/ |
|
static int usbhsg_dma_map_ctrl(struct device *dma_dev, struct usbhs_pkt *pkt, |
|
int map) |
|
{ |
|
struct usbhsg_request *ureq = usbhsg_pkt_to_ureq(pkt); |
|
struct usb_request *req = &ureq->req; |
|
struct usbhs_pipe *pipe = pkt->pipe; |
|
enum dma_data_direction dir; |
|
int ret = 0; |
|
|
|
dir = usbhs_pipe_is_dir_host(pipe); |
|
|
|
if (map) { |
|
/* it can not use scatter/gather */ |
|
WARN_ON(req->num_sgs); |
|
|
|
ret = usb_gadget_map_request_by_dev(dma_dev, req, dir); |
|
if (ret < 0) |
|
return ret; |
|
|
|
pkt->dma = req->dma; |
|
} else { |
|
usb_gadget_unmap_request_by_dev(dma_dev, req, dir); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* USB_TYPE_STANDARD / clear feature functions |
|
*/ |
|
static int usbhsg_recip_handler_std_control_done(struct usbhs_priv *priv, |
|
struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); |
|
|
|
usbhs_dcp_control_transfer_done(pipe); |
|
|
|
return 0; |
|
} |
|
|
|
static int usbhsg_recip_handler_std_clear_endpoint(struct usbhs_priv *priv, |
|
struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
|
|
|
if (!usbhsg_status_has(gpriv, USBHSG_STATUS_WEDGE)) { |
|
usbhs_pipe_disable(pipe); |
|
usbhs_pipe_sequence_data0(pipe); |
|
usbhs_pipe_enable(pipe); |
|
} |
|
|
|
usbhsg_recip_handler_std_control_done(priv, uep, ctrl); |
|
|
|
usbhs_pkt_start(pipe); |
|
|
|
return 0; |
|
} |
|
|
|
static struct usbhsg_recip_handle req_clear_feature = { |
|
.name = "clear feature", |
|
.device = usbhsg_recip_handler_std_control_done, |
|
.interface = usbhsg_recip_handler_std_control_done, |
|
.endpoint = usbhsg_recip_handler_std_clear_endpoint, |
|
}; |
|
|
|
/* |
|
* USB_TYPE_STANDARD / set feature functions |
|
*/ |
|
static int usbhsg_recip_handler_std_set_device(struct usbhs_priv *priv, |
|
struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl) |
|
{ |
|
switch (le16_to_cpu(ctrl->wValue)) { |
|
case USB_DEVICE_TEST_MODE: |
|
usbhsg_recip_handler_std_control_done(priv, uep, ctrl); |
|
udelay(100); |
|
usbhs_sys_set_test_mode(priv, le16_to_cpu(ctrl->wIndex) >> 8); |
|
break; |
|
default: |
|
usbhsg_recip_handler_std_control_done(priv, uep, ctrl); |
|
break; |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int usbhsg_recip_handler_std_set_endpoint(struct usbhs_priv *priv, |
|
struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl) |
|
{ |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
|
|
|
usbhs_pipe_stall(pipe); |
|
|
|
usbhsg_recip_handler_std_control_done(priv, uep, ctrl); |
|
|
|
return 0; |
|
} |
|
|
|
static struct usbhsg_recip_handle req_set_feature = { |
|
.name = "set feature", |
|
.device = usbhsg_recip_handler_std_set_device, |
|
.interface = usbhsg_recip_handler_std_control_done, |
|
.endpoint = usbhsg_recip_handler_std_set_endpoint, |
|
}; |
|
|
|
/* |
|
* USB_TYPE_STANDARD / get status functions |
|
*/ |
|
static void __usbhsg_recip_send_complete(struct usb_ep *ep, |
|
struct usb_request *req) |
|
{ |
|
struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
|
|
|
/* free allocated recip-buffer/usb_request */ |
|
kfree(ureq->pkt.buf); |
|
usb_ep_free_request(ep, req); |
|
} |
|
|
|
static void __usbhsg_recip_send_status(struct usbhsg_gpriv *gpriv, |
|
unsigned short status) |
|
{ |
|
struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); |
|
struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
|
struct usb_request *req; |
|
__le16 *buf; |
|
|
|
/* alloc new usb_request for recip */ |
|
req = usb_ep_alloc_request(&dcp->ep, GFP_ATOMIC); |
|
if (!req) { |
|
dev_err(dev, "recip request allocation fail\n"); |
|
return; |
|
} |
|
|
|
/* alloc recip data buffer */ |
|
buf = kmalloc(sizeof(*buf), GFP_ATOMIC); |
|
if (!buf) { |
|
usb_ep_free_request(&dcp->ep, req); |
|
return; |
|
} |
|
|
|
/* recip data is status */ |
|
*buf = cpu_to_le16(status); |
|
|
|
/* allocated usb_request/buffer will be freed */ |
|
req->complete = __usbhsg_recip_send_complete; |
|
req->buf = buf; |
|
req->length = sizeof(*buf); |
|
req->zero = 0; |
|
|
|
/* push packet */ |
|
pipe->handler = &usbhs_fifo_pio_push_handler; |
|
usbhsg_queue_push(dcp, usbhsg_req_to_ureq(req)); |
|
} |
|
|
|
static int usbhsg_recip_handler_std_get_device(struct usbhs_priv *priv, |
|
struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
unsigned short status = 0; |
|
|
|
if (usbhsg_status_has(gpriv, USBHSG_STATUS_SELF_POWERED)) |
|
status = 1 << USB_DEVICE_SELF_POWERED; |
|
|
|
__usbhsg_recip_send_status(gpriv, status); |
|
|
|
return 0; |
|
} |
|
|
|
static int usbhsg_recip_handler_std_get_interface(struct usbhs_priv *priv, |
|
struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
unsigned short status = 0; |
|
|
|
__usbhsg_recip_send_status(gpriv, status); |
|
|
|
return 0; |
|
} |
|
|
|
static int usbhsg_recip_handler_std_get_endpoint(struct usbhs_priv *priv, |
|
struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
|
unsigned short status = 0; |
|
|
|
if (usbhs_pipe_is_stall(pipe)) |
|
status = 1 << USB_ENDPOINT_HALT; |
|
|
|
__usbhsg_recip_send_status(gpriv, status); |
|
|
|
return 0; |
|
} |
|
|
|
static struct usbhsg_recip_handle req_get_status = { |
|
.name = "get status", |
|
.device = usbhsg_recip_handler_std_get_device, |
|
.interface = usbhsg_recip_handler_std_get_interface, |
|
.endpoint = usbhsg_recip_handler_std_get_endpoint, |
|
}; |
|
|
|
/* |
|
* USB_TYPE handler |
|
*/ |
|
static int usbhsg_recip_run_handle(struct usbhs_priv *priv, |
|
struct usbhsg_recip_handle *handler, |
|
struct usb_ctrlrequest *ctrl) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
|
struct usbhsg_uep *uep; |
|
struct usbhs_pipe *pipe; |
|
int recip = ctrl->bRequestType & USB_RECIP_MASK; |
|
int nth = le16_to_cpu(ctrl->wIndex) & USB_ENDPOINT_NUMBER_MASK; |
|
int ret = 0; |
|
int (*func)(struct usbhs_priv *priv, struct usbhsg_uep *uep, |
|
struct usb_ctrlrequest *ctrl); |
|
char *msg; |
|
|
|
uep = usbhsg_gpriv_to_nth_uep(gpriv, nth); |
|
pipe = usbhsg_uep_to_pipe(uep); |
|
if (!pipe) { |
|
dev_err(dev, "wrong recip request\n"); |
|
return -EINVAL; |
|
} |
|
|
|
switch (recip) { |
|
case USB_RECIP_DEVICE: |
|
msg = "DEVICE"; |
|
func = handler->device; |
|
break; |
|
case USB_RECIP_INTERFACE: |
|
msg = "INTERFACE"; |
|
func = handler->interface; |
|
break; |
|
case USB_RECIP_ENDPOINT: |
|
msg = "ENDPOINT"; |
|
func = handler->endpoint; |
|
break; |
|
default: |
|
dev_warn(dev, "unsupported RECIP(%d)\n", recip); |
|
func = NULL; |
|
ret = -EINVAL; |
|
} |
|
|
|
if (func) { |
|
dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg); |
|
ret = func(priv, uep, ctrl); |
|
} |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* irq functions |
|
* |
|
* it will be called from usbhs_interrupt |
|
*/ |
|
static int usbhsg_irq_dev_state(struct usbhs_priv *priv, |
|
struct usbhs_irq_state *irq_state) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
|
int state = usbhs_status_get_device_state(irq_state); |
|
|
|
gpriv->gadget.speed = usbhs_bus_get_speed(priv); |
|
|
|
dev_dbg(dev, "state = %x : speed : %d\n", state, gpriv->gadget.speed); |
|
|
|
if (gpriv->gadget.speed != USB_SPEED_UNKNOWN && |
|
(state & SUSPENDED_STATE)) { |
|
if (gpriv->driver && gpriv->driver->suspend) |
|
gpriv->driver->suspend(&gpriv->gadget); |
|
usb_gadget_set_state(&gpriv->gadget, USB_STATE_SUSPENDED); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int usbhsg_irq_ctrl_stage(struct usbhs_priv *priv, |
|
struct usbhs_irq_state *irq_state) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(dcp); |
|
struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
|
struct usb_ctrlrequest ctrl; |
|
struct usbhsg_recip_handle *recip_handler = NULL; |
|
int stage = usbhs_status_get_ctrl_stage(irq_state); |
|
int ret = 0; |
|
|
|
dev_dbg(dev, "stage = %d\n", stage); |
|
|
|
/* |
|
* see Manual |
|
* |
|
* "Operation" |
|
* - "Interrupt Function" |
|
* - "Control Transfer Stage Transition Interrupt" |
|
* - Fig. "Control Transfer Stage Transitions" |
|
*/ |
|
|
|
switch (stage) { |
|
case READ_DATA_STAGE: |
|
pipe->handler = &usbhs_fifo_pio_push_handler; |
|
break; |
|
case WRITE_DATA_STAGE: |
|
pipe->handler = &usbhs_fifo_pio_pop_handler; |
|
break; |
|
case NODATA_STATUS_STAGE: |
|
pipe->handler = &usbhs_ctrl_stage_end_handler; |
|
break; |
|
case READ_STATUS_STAGE: |
|
case WRITE_STATUS_STAGE: |
|
usbhs_dcp_control_transfer_done(pipe); |
|
fallthrough; |
|
default: |
|
return ret; |
|
} |
|
|
|
/* |
|
* get usb request |
|
*/ |
|
usbhs_usbreq_get_val(priv, &ctrl); |
|
|
|
switch (ctrl.bRequestType & USB_TYPE_MASK) { |
|
case USB_TYPE_STANDARD: |
|
switch (ctrl.bRequest) { |
|
case USB_REQ_CLEAR_FEATURE: |
|
recip_handler = &req_clear_feature; |
|
break; |
|
case USB_REQ_SET_FEATURE: |
|
recip_handler = &req_set_feature; |
|
break; |
|
case USB_REQ_GET_STATUS: |
|
recip_handler = &req_get_status; |
|
break; |
|
} |
|
} |
|
|
|
/* |
|
* setup stage / run recip |
|
*/ |
|
if (recip_handler) |
|
ret = usbhsg_recip_run_handle(priv, recip_handler, &ctrl); |
|
else |
|
ret = gpriv->driver->setup(&gpriv->gadget, &ctrl); |
|
|
|
if (ret < 0) |
|
usbhs_pipe_stall(pipe); |
|
|
|
return ret; |
|
} |
|
|
|
/* |
|
* |
|
* usb_dcp_ops |
|
* |
|
*/ |
|
static int usbhsg_pipe_disable(struct usbhsg_uep *uep) |
|
{ |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
|
struct usbhs_pkt *pkt; |
|
|
|
while (1) { |
|
pkt = usbhs_pkt_pop(pipe, NULL); |
|
if (!pkt) |
|
break; |
|
|
|
usbhsg_queue_pop(uep, usbhsg_pkt_to_ureq(pkt), -ESHUTDOWN); |
|
} |
|
|
|
usbhs_pipe_disable(pipe); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* |
|
* usb_ep_ops |
|
* |
|
*/ |
|
static int usbhsg_ep_enable(struct usb_ep *ep, |
|
const struct usb_endpoint_descriptor *desc) |
|
{ |
|
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
|
struct usbhs_pipe *pipe; |
|
int ret = -EIO; |
|
unsigned long flags; |
|
|
|
usbhs_lock(priv, flags); |
|
|
|
/* |
|
* if it already have pipe, |
|
* nothing to do |
|
*/ |
|
if (uep->pipe) { |
|
usbhs_pipe_clear(uep->pipe); |
|
usbhs_pipe_sequence_data0(uep->pipe); |
|
ret = 0; |
|
goto usbhsg_ep_enable_end; |
|
} |
|
|
|
pipe = usbhs_pipe_malloc(priv, |
|
usb_endpoint_type(desc), |
|
usb_endpoint_dir_in(desc)); |
|
if (pipe) { |
|
uep->pipe = pipe; |
|
pipe->mod_private = uep; |
|
|
|
/* set epnum / maxp */ |
|
usbhs_pipe_config_update(pipe, 0, |
|
usb_endpoint_num(desc), |
|
usb_endpoint_maxp(desc)); |
|
|
|
/* |
|
* usbhs_fifo_dma_push/pop_handler try to |
|
* use dmaengine if possible. |
|
* It will use pio handler if impossible. |
|
*/ |
|
if (usb_endpoint_dir_in(desc)) { |
|
pipe->handler = &usbhs_fifo_dma_push_handler; |
|
} else { |
|
pipe->handler = &usbhs_fifo_dma_pop_handler; |
|
usbhs_xxxsts_clear(priv, BRDYSTS, |
|
usbhs_pipe_number(pipe)); |
|
} |
|
|
|
ret = 0; |
|
} |
|
|
|
usbhsg_ep_enable_end: |
|
usbhs_unlock(priv, flags); |
|
|
|
return ret; |
|
} |
|
|
|
static int usbhsg_ep_disable(struct usb_ep *ep) |
|
{ |
|
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
|
struct usbhs_pipe *pipe; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&uep->lock, flags); |
|
pipe = usbhsg_uep_to_pipe(uep); |
|
if (!pipe) |
|
goto out; |
|
|
|
usbhsg_pipe_disable(uep); |
|
usbhs_pipe_free(pipe); |
|
|
|
uep->pipe->mod_private = NULL; |
|
uep->pipe = NULL; |
|
|
|
out: |
|
spin_unlock_irqrestore(&uep->lock, flags); |
|
|
|
return 0; |
|
} |
|
|
|
static struct usb_request *usbhsg_ep_alloc_request(struct usb_ep *ep, |
|
gfp_t gfp_flags) |
|
{ |
|
struct usbhsg_request *ureq; |
|
|
|
ureq = kzalloc(sizeof *ureq, gfp_flags); |
|
if (!ureq) |
|
return NULL; |
|
|
|
usbhs_pkt_init(usbhsg_ureq_to_pkt(ureq)); |
|
|
|
return &ureq->req; |
|
} |
|
|
|
static void usbhsg_ep_free_request(struct usb_ep *ep, |
|
struct usb_request *req) |
|
{ |
|
struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
|
|
|
WARN_ON(!list_empty(&ureq->pkt.node)); |
|
kfree(ureq); |
|
} |
|
|
|
static int usbhsg_ep_queue(struct usb_ep *ep, struct usb_request *req, |
|
gfp_t gfp_flags) |
|
{ |
|
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
|
|
|
/* param check */ |
|
if (usbhsg_is_not_connected(gpriv) || |
|
unlikely(!gpriv->driver) || |
|
unlikely(!pipe)) |
|
return -ESHUTDOWN; |
|
|
|
usbhsg_queue_push(uep, ureq); |
|
|
|
return 0; |
|
} |
|
|
|
static int usbhsg_ep_dequeue(struct usb_ep *ep, struct usb_request *req) |
|
{ |
|
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
|
struct usbhsg_request *ureq = usbhsg_req_to_ureq(req); |
|
struct usbhs_pipe *pipe; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&uep->lock, flags); |
|
pipe = usbhsg_uep_to_pipe(uep); |
|
if (pipe) |
|
usbhs_pkt_pop(pipe, usbhsg_ureq_to_pkt(ureq)); |
|
|
|
/* |
|
* To dequeue a request, this driver should call the usbhsg_queue_pop() |
|
* even if the pipe is NULL. |
|
*/ |
|
usbhsg_queue_pop(uep, ureq, -ECONNRESET); |
|
spin_unlock_irqrestore(&uep->lock, flags); |
|
|
|
return 0; |
|
} |
|
|
|
static int __usbhsg_ep_set_halt_wedge(struct usb_ep *ep, int halt, int wedge) |
|
{ |
|
struct usbhsg_uep *uep = usbhsg_ep_to_uep(ep); |
|
struct usbhs_pipe *pipe = usbhsg_uep_to_pipe(uep); |
|
struct usbhsg_gpriv *gpriv = usbhsg_uep_to_gpriv(uep); |
|
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
|
struct device *dev = usbhsg_gpriv_to_dev(gpriv); |
|
unsigned long flags; |
|
int ret = 0; |
|
|
|
dev_dbg(dev, "set halt %d (pipe %d)\n", |
|
halt, usbhs_pipe_number(pipe)); |
|
|
|
/******************** spin lock ********************/ |
|
usbhs_lock(priv, flags); |
|
|
|
/* |
|
* According to usb_ep_set_halt()'s description, this function should |
|
* return -EAGAIN if the IN endpoint has any queue or data. Note |
|
* that the usbhs_pipe_is_dir_in() returns false if the pipe is an |
|
* IN endpoint in the gadget mode. |
|
*/ |
|
if (!usbhs_pipe_is_dir_in(pipe) && (__usbhsf_pkt_get(pipe) || |
|
usbhs_pipe_contains_transmittable_data(pipe))) { |
|
ret = -EAGAIN; |
|
goto out; |
|
} |
|
|
|
if (halt) |
|
usbhs_pipe_stall(pipe); |
|
else |
|
usbhs_pipe_disable(pipe); |
|
|
|
if (halt && wedge) |
|
usbhsg_status_set(gpriv, USBHSG_STATUS_WEDGE); |
|
else |
|
usbhsg_status_clr(gpriv, USBHSG_STATUS_WEDGE); |
|
|
|
out: |
|
usbhs_unlock(priv, flags); |
|
/******************** spin unlock ******************/ |
|
|
|
return ret; |
|
} |
|
|
|
static int usbhsg_ep_set_halt(struct usb_ep *ep, int value) |
|
{ |
|
return __usbhsg_ep_set_halt_wedge(ep, value, 0); |
|
} |
|
|
|
static int usbhsg_ep_set_wedge(struct usb_ep *ep) |
|
{ |
|
return __usbhsg_ep_set_halt_wedge(ep, 1, 1); |
|
} |
|
|
|
static const struct usb_ep_ops usbhsg_ep_ops = { |
|
.enable = usbhsg_ep_enable, |
|
.disable = usbhsg_ep_disable, |
|
|
|
.alloc_request = usbhsg_ep_alloc_request, |
|
.free_request = usbhsg_ep_free_request, |
|
|
|
.queue = usbhsg_ep_queue, |
|
.dequeue = usbhsg_ep_dequeue, |
|
|
|
.set_halt = usbhsg_ep_set_halt, |
|
.set_wedge = usbhsg_ep_set_wedge, |
|
}; |
|
|
|
/* |
|
* pullup control |
|
*/ |
|
static int usbhsg_can_pullup(struct usbhs_priv *priv) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
|
|
return gpriv->driver && |
|
usbhsg_status_has(gpriv, USBHSG_STATUS_SOFT_CONNECT); |
|
} |
|
|
|
static void usbhsg_update_pullup(struct usbhs_priv *priv) |
|
{ |
|
if (usbhsg_can_pullup(priv)) |
|
usbhs_sys_function_pullup(priv, 1); |
|
else |
|
usbhs_sys_function_pullup(priv, 0); |
|
} |
|
|
|
/* |
|
* usb module start/end |
|
*/ |
|
static int usbhsg_try_start(struct usbhs_priv *priv, u32 status) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
struct usbhsg_uep *dcp = usbhsg_gpriv_to_dcp(gpriv); |
|
struct usbhs_mod *mod = usbhs_mod_get_current(priv); |
|
struct device *dev = usbhs_priv_to_dev(priv); |
|
unsigned long flags; |
|
int ret = 0; |
|
|
|
/******************** spin lock ********************/ |
|
usbhs_lock(priv, flags); |
|
|
|
usbhsg_status_set(gpriv, status); |
|
if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && |
|
usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))) |
|
ret = -1; /* not ready */ |
|
|
|
usbhs_unlock(priv, flags); |
|
/******************** spin unlock ********************/ |
|
|
|
if (ret < 0) |
|
return 0; /* not ready is not error */ |
|
|
|
/* |
|
* enable interrupt and systems if ready |
|
*/ |
|
dev_dbg(dev, "start gadget\n"); |
|
|
|
/* |
|
* pipe initialize and enable DCP |
|
*/ |
|
usbhs_fifo_init(priv); |
|
usbhs_pipe_init(priv, |
|
usbhsg_dma_map_ctrl); |
|
|
|
/* dcp init instead of usbhsg_ep_enable() */ |
|
dcp->pipe = usbhs_dcp_malloc(priv); |
|
dcp->pipe->mod_private = dcp; |
|
usbhs_pipe_config_update(dcp->pipe, 0, 0, 64); |
|
|
|
/* |
|
* system config enble |
|
* - HI speed |
|
* - function |
|
* - usb module |
|
*/ |
|
usbhs_sys_function_ctrl(priv, 1); |
|
usbhsg_update_pullup(priv); |
|
|
|
/* |
|
* enable irq callback |
|
*/ |
|
mod->irq_dev_state = usbhsg_irq_dev_state; |
|
mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage; |
|
usbhs_irq_callback_update(priv, mod); |
|
|
|
return 0; |
|
} |
|
|
|
static int usbhsg_try_stop(struct usbhs_priv *priv, u32 status) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
struct usbhs_mod *mod = usbhs_mod_get_current(priv); |
|
struct usbhsg_uep *uep; |
|
struct device *dev = usbhs_priv_to_dev(priv); |
|
unsigned long flags; |
|
int ret = 0, i; |
|
|
|
/******************** spin lock ********************/ |
|
usbhs_lock(priv, flags); |
|
|
|
usbhsg_status_clr(gpriv, status); |
|
if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) && |
|
!usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)) |
|
ret = -1; /* already done */ |
|
|
|
usbhs_unlock(priv, flags); |
|
/******************** spin unlock ********************/ |
|
|
|
if (ret < 0) |
|
return 0; /* already done is not error */ |
|
|
|
/* |
|
* disable interrupt and systems if 1st try |
|
*/ |
|
usbhs_fifo_quit(priv); |
|
|
|
/* disable all irq */ |
|
mod->irq_dev_state = NULL; |
|
mod->irq_ctrl_stage = NULL; |
|
usbhs_irq_callback_update(priv, mod); |
|
|
|
gpriv->gadget.speed = USB_SPEED_UNKNOWN; |
|
|
|
/* disable sys */ |
|
usbhs_sys_set_test_mode(priv, 0); |
|
usbhs_sys_function_ctrl(priv, 0); |
|
|
|
/* disable all eps */ |
|
usbhsg_for_each_uep_with_dcp(uep, gpriv, i) |
|
usbhsg_ep_disable(&uep->ep); |
|
|
|
dev_dbg(dev, "stop gadget\n"); |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* VBUS provided by the PHY |
|
*/ |
|
static int usbhsm_phy_get_vbus(struct platform_device *pdev) |
|
{ |
|
struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
|
|
return gpriv->vbus_active; |
|
} |
|
|
|
static void usbhs_mod_phy_mode(struct usbhs_priv *priv) |
|
{ |
|
struct usbhs_mod_info *info = &priv->mod_info; |
|
|
|
info->irq_vbus = NULL; |
|
info->get_vbus = usbhsm_phy_get_vbus; |
|
|
|
usbhs_irq_callback_update(priv, NULL); |
|
} |
|
|
|
/* |
|
* |
|
* linux usb function |
|
* |
|
*/ |
|
static int usbhsg_gadget_start(struct usb_gadget *gadget, |
|
struct usb_gadget_driver *driver) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
|
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
|
struct device *dev = usbhs_priv_to_dev(priv); |
|
int ret; |
|
|
|
if (!driver || |
|
!driver->setup || |
|
driver->max_speed < USB_SPEED_FULL) |
|
return -EINVAL; |
|
|
|
/* connect to bus through transceiver */ |
|
if (!IS_ERR_OR_NULL(gpriv->transceiver)) { |
|
ret = otg_set_peripheral(gpriv->transceiver->otg, |
|
&gpriv->gadget); |
|
if (ret) { |
|
dev_err(dev, "%s: can't bind to transceiver\n", |
|
gpriv->gadget.name); |
|
return ret; |
|
} |
|
|
|
/* get vbus using phy versions */ |
|
usbhs_mod_phy_mode(priv); |
|
} |
|
|
|
/* first hook up the driver ... */ |
|
gpriv->driver = driver; |
|
|
|
return usbhsg_try_start(priv, USBHSG_STATUS_REGISTERD); |
|
} |
|
|
|
static int usbhsg_gadget_stop(struct usb_gadget *gadget) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
|
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
|
|
|
usbhsg_try_stop(priv, USBHSG_STATUS_REGISTERD); |
|
|
|
if (!IS_ERR_OR_NULL(gpriv->transceiver)) |
|
otg_set_peripheral(gpriv->transceiver->otg, NULL); |
|
|
|
gpriv->driver = NULL; |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* usb gadget ops |
|
*/ |
|
static int usbhsg_get_frame(struct usb_gadget *gadget) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
|
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
|
|
|
return usbhs_frame_get_num(priv); |
|
} |
|
|
|
static int usbhsg_pullup(struct usb_gadget *gadget, int is_on) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
|
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
|
unsigned long flags; |
|
|
|
usbhs_lock(priv, flags); |
|
if (is_on) |
|
usbhsg_status_set(gpriv, USBHSG_STATUS_SOFT_CONNECT); |
|
else |
|
usbhsg_status_clr(gpriv, USBHSG_STATUS_SOFT_CONNECT); |
|
usbhsg_update_pullup(priv); |
|
usbhs_unlock(priv, flags); |
|
|
|
return 0; |
|
} |
|
|
|
static int usbhsg_set_selfpowered(struct usb_gadget *gadget, int is_self) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
|
|
|
if (is_self) |
|
usbhsg_status_set(gpriv, USBHSG_STATUS_SELF_POWERED); |
|
else |
|
usbhsg_status_clr(gpriv, USBHSG_STATUS_SELF_POWERED); |
|
|
|
gadget->is_selfpowered = (is_self != 0); |
|
|
|
return 0; |
|
} |
|
|
|
static int usbhsg_vbus_session(struct usb_gadget *gadget, int is_active) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_gadget_to_gpriv(gadget); |
|
struct usbhs_priv *priv = usbhsg_gpriv_to_priv(gpriv); |
|
struct platform_device *pdev = usbhs_priv_to_pdev(priv); |
|
|
|
gpriv->vbus_active = !!is_active; |
|
|
|
usbhsc_schedule_notify_hotplug(pdev); |
|
|
|
return 0; |
|
} |
|
|
|
static const struct usb_gadget_ops usbhsg_gadget_ops = { |
|
.get_frame = usbhsg_get_frame, |
|
.set_selfpowered = usbhsg_set_selfpowered, |
|
.udc_start = usbhsg_gadget_start, |
|
.udc_stop = usbhsg_gadget_stop, |
|
.pullup = usbhsg_pullup, |
|
.vbus_session = usbhsg_vbus_session, |
|
}; |
|
|
|
static int usbhsg_start(struct usbhs_priv *priv) |
|
{ |
|
return usbhsg_try_start(priv, USBHSG_STATUS_STARTED); |
|
} |
|
|
|
static int usbhsg_stop(struct usbhs_priv *priv) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
|
|
/* cable disconnect */ |
|
if (gpriv->driver && |
|
gpriv->driver->disconnect) |
|
gpriv->driver->disconnect(&gpriv->gadget); |
|
|
|
return usbhsg_try_stop(priv, USBHSG_STATUS_STARTED); |
|
} |
|
|
|
int usbhs_mod_gadget_probe(struct usbhs_priv *priv) |
|
{ |
|
struct usbhsg_gpriv *gpriv; |
|
struct usbhsg_uep *uep; |
|
struct device *dev = usbhs_priv_to_dev(priv); |
|
struct renesas_usbhs_driver_pipe_config *pipe_configs = |
|
usbhs_get_dparam(priv, pipe_configs); |
|
int pipe_size = usbhs_get_dparam(priv, pipe_size); |
|
int i; |
|
int ret; |
|
|
|
gpriv = kzalloc(sizeof(struct usbhsg_gpriv), GFP_KERNEL); |
|
if (!gpriv) |
|
return -ENOMEM; |
|
|
|
uep = kcalloc(pipe_size, sizeof(struct usbhsg_uep), GFP_KERNEL); |
|
if (!uep) { |
|
ret = -ENOMEM; |
|
goto usbhs_mod_gadget_probe_err_gpriv; |
|
} |
|
|
|
gpriv->transceiver = usb_get_phy(USB_PHY_TYPE_UNDEFINED); |
|
dev_info(dev, "%stransceiver found\n", |
|
!IS_ERR(gpriv->transceiver) ? "" : "no "); |
|
|
|
/* |
|
* CAUTION |
|
* |
|
* There is no guarantee that it is possible to access usb module here. |
|
* Don't accesses to it. |
|
* The accesse will be enable after "usbhsg_start" |
|
*/ |
|
|
|
/* |
|
* register itself |
|
*/ |
|
usbhs_mod_register(priv, &gpriv->mod, USBHS_GADGET); |
|
|
|
/* init gpriv */ |
|
gpriv->mod.name = "gadget"; |
|
gpriv->mod.start = usbhsg_start; |
|
gpriv->mod.stop = usbhsg_stop; |
|
gpriv->uep = uep; |
|
gpriv->uep_size = pipe_size; |
|
usbhsg_status_init(gpriv); |
|
|
|
/* |
|
* init gadget |
|
*/ |
|
gpriv->gadget.dev.parent = dev; |
|
gpriv->gadget.name = "renesas_usbhs_udc"; |
|
gpriv->gadget.ops = &usbhsg_gadget_ops; |
|
gpriv->gadget.max_speed = USB_SPEED_HIGH; |
|
gpriv->gadget.quirk_avoids_skb_reserve = usbhs_get_dparam(priv, |
|
has_usb_dmac); |
|
|
|
INIT_LIST_HEAD(&gpriv->gadget.ep_list); |
|
|
|
/* |
|
* init usb_ep |
|
*/ |
|
usbhsg_for_each_uep_with_dcp(uep, gpriv, i) { |
|
uep->gpriv = gpriv; |
|
uep->pipe = NULL; |
|
snprintf(uep->ep_name, EP_NAME_SIZE, "ep%d", i); |
|
|
|
uep->ep.name = uep->ep_name; |
|
uep->ep.ops = &usbhsg_ep_ops; |
|
INIT_LIST_HEAD(&uep->ep.ep_list); |
|
spin_lock_init(&uep->lock); |
|
|
|
/* init DCP */ |
|
if (usbhsg_is_dcp(uep)) { |
|
gpriv->gadget.ep0 = &uep->ep; |
|
usb_ep_set_maxpacket_limit(&uep->ep, 64); |
|
uep->ep.caps.type_control = true; |
|
} else { |
|
/* init normal pipe */ |
|
if (pipe_configs[i].type == USB_ENDPOINT_XFER_ISOC) |
|
uep->ep.caps.type_iso = true; |
|
if (pipe_configs[i].type == USB_ENDPOINT_XFER_BULK) |
|
uep->ep.caps.type_bulk = true; |
|
if (pipe_configs[i].type == USB_ENDPOINT_XFER_INT) |
|
uep->ep.caps.type_int = true; |
|
usb_ep_set_maxpacket_limit(&uep->ep, |
|
pipe_configs[i].bufsize); |
|
list_add_tail(&uep->ep.ep_list, &gpriv->gadget.ep_list); |
|
} |
|
uep->ep.caps.dir_in = true; |
|
uep->ep.caps.dir_out = true; |
|
} |
|
|
|
ret = usb_add_gadget_udc(dev, &gpriv->gadget); |
|
if (ret) |
|
goto err_add_udc; |
|
|
|
|
|
dev_info(dev, "gadget probed\n"); |
|
|
|
return 0; |
|
|
|
err_add_udc: |
|
kfree(gpriv->uep); |
|
|
|
usbhs_mod_gadget_probe_err_gpriv: |
|
kfree(gpriv); |
|
|
|
return ret; |
|
} |
|
|
|
void usbhs_mod_gadget_remove(struct usbhs_priv *priv) |
|
{ |
|
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv); |
|
|
|
usb_del_gadget_udc(&gpriv->gadget); |
|
|
|
kfree(gpriv->uep); |
|
kfree(gpriv); |
|
}
|
|
|