static int usbhsg_irq_ready(struct usbhs_priv *priv,
struct usbhs_irq_state *irq_state)
{
struct usbhsg_gpriv *gpriv = usbhsg_priv_to_gpriv(priv);
struct usbhsg_uep *uep;
struct usbhs_pipe *pipe;
struct device *dev = usbhsg_gpriv_to_dev(gpriv);
int i, ret;
if (!irq_state->brdysts) {
dev_err(dev, "debug %s !!\n", __func__);
return -EIO;
}
dev_dbg(dev, "irq ready [0x%04x]\n", irq_state->brdysts);
/*
* search interrupted "pipe"
* not "uep".
*/
usbhs_for_each_pipe_with_dcp(pipe, priv, i) {
if (!(irq_state->brdysts & (1 << i)))
continue;
uep = usbhsg_pipe_to_uep(pipe);
ret = usbhsg_queue_handle(uep);
if (ret < 0)
dev_err(dev, "receive error %d : %d\n", i, ret);
}
return 0;
}
/*
* 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);
}
/*
* 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;
}
/*
* 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_pipe_init(priv,
usbhsg_queue_done,
usbhsg_dma_map_ctrl);
usbhs_fifo_init(priv);
usbhsg_uep_init(gpriv);
/* dcp init */
dcp->pipe = usbhs_dcp_malloc(priv);
dcp->pipe->mod_private = dcp;
/*
* system config enble
* - HI speed
* - function
* - usb module
*/
usbhs_sys_hispeed_ctrl(priv, 1);
usbhs_sys_function_ctrl(priv, 1);
usbhs_sys_usb_ctrl(priv, 1);
/*
* 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;
}
/*
* 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;
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");
ret = -EINVAL;
goto usbhsg_recip_run_handle_end;
}
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) {
unsigned long flags;
dev_dbg(dev, "%s (pipe %d :%s)\n", handler->name, nth, msg);
/******************** spin lock ********************/
usbhs_lock(priv, flags);
ret = func(priv, uep, ctrl);
usbhs_unlock(priv, flags);
/******************** spin unlock ******************/
}
usbhsg_recip_run_handle_end:
usbhs_pkt_start(pipe);
return ret;
}
/*
* 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);
spinlock_t *lock;
unsigned long flags;
/******************** spin lock ********************/
lock = usbhsg_trylock(gpriv, &flags);
/*
* enable interrupt and systems if ready
*/
usbhsg_status_set(gpriv, status);
if (!(usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD)))
goto usbhsg_try_start_unlock;
dev_dbg(dev, "start gadget\n");
/*
* pipe initialize and enable DCP
*/
usbhs_pipe_init(priv);
usbhsg_uep_init(gpriv);
usbhsg_dcp_enable(dcp);
/*
* system config enble
* - HI speed
* - function
* - usb module
*/
usbhs_sys_hispeed_ctrl(priv, 1);
usbhs_sys_function_ctrl(priv, 1);
usbhs_sys_usb_ctrl(priv, 1);
/*
* enable irq callback
*/
mod->irq_dev_state = usbhsg_irq_dev_state;
mod->irq_ctrl_stage = usbhsg_irq_ctrl_stage;
mod->irq_empty = usbhsg_irq_empty;
mod->irq_ready = usbhsg_irq_ready;
mod->irq_bempsts = 0;
mod->irq_brdysts = 0;
usbhs_irq_callback_update(priv, mod);
usbhsg_try_start_unlock:
usbhsg_unlock(lock, &flags);
/******************** spin unlock ********************/
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 *dcp = usbhsg_gpriv_to_dcp(gpriv);
struct device *dev = usbhs_priv_to_dev(priv);
spinlock_t *lock;
unsigned long flags;
/******************** spin lock ********************/
lock = usbhsg_trylock(gpriv, &flags);
/*
* disable interrupt and systems if 1st try
*/
usbhsg_status_clr(gpriv, status);
if (!usbhsg_status_has(gpriv, USBHSG_STATUS_STARTED) &&
!usbhsg_status_has(gpriv, USBHSG_STATUS_REGISTERD))
goto usbhsg_try_stop_unlock;
/* disable all irq */
mod->irq_dev_state = NULL;
mod->irq_ctrl_stage = NULL;
mod->irq_empty = NULL;
mod->irq_ready = NULL;
mod->irq_bempsts = 0;
mod->irq_brdysts = 0;
usbhs_irq_callback_update(priv, mod);
usbhsg_dcp_disable(dcp);
gpriv->gadget.speed = USB_SPEED_UNKNOWN;
/* disable sys */
usbhs_sys_hispeed_ctrl(priv, 0);
usbhs_sys_function_ctrl(priv, 0);
usbhs_sys_usb_ctrl(priv, 0);
usbhsg_unlock(lock, &flags);
/******************** spin unlock ********************/
if (gpriv->driver &&
gpriv->driver->disconnect)
gpriv->driver->disconnect(&gpriv->gadget);
dev_dbg(dev, "stop gadget\n");
return 0;
usbhsg_try_stop_unlock:
usbhsg_unlock(lock, &flags);
return 0;
}
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);
}
/*
* 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;
}
/*
* 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);
gpriv->gadget.speed = usbhs_status_get_usb_speed(irq_state);
dev_dbg(dev, "state = %x : speed : %d\n",
usbhs_status_get_device_state(irq_state),
gpriv->gadget.speed);
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 *dcp = usbhsg_gpriv_to_dcp(gpriv);
struct device *dev = usbhs_priv_to_dev(priv);
unsigned long flags;
int ret = 0;
/******************** 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_hispeed_ctrl(priv, 0);
usbhs_sys_function_ctrl(priv, 0);
usbhs_sys_usb_ctrl(priv, 0);
usbhsg_pipe_disable(dcp);
if (gpriv->driver &&
gpriv->driver->disconnect)
gpriv->driver->disconnect(&gpriv->gadget);
dev_dbg(dev, "stop gadget\n");
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:
dcp->handler = &usbhsg_handler_send_ctrl;
break;
case WRITE_DATA_STAGE:
dcp->handler = &usbhsg_handler_recv_ctrl;
break;
case NODATA_STATUS_STAGE:
dcp->handler = &usbhsg_handler_ctrl_stage_end;
break;
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;
}
}
/*
* 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_fifo_stall(pipe);
return ret;
}
